Pretreatment device for soil analysis

Abstract

To appropriately and easily discharge soil received from a measuring member.SOLUTION: A pretreatment device 1 for soil analysis is the pretreatment device 1 for treating before analyzing components included in the soil D1 collected in a farm field, includes: a first container 5 which stores the collected soil D1; a measuring member 9 which extracts a fixed volume of soil D1 from the soil D1 stored in the first container 5; a dish member 32 which receives the soil D1 from the measuring member 9; and a drive device 65 which supports the dish member 32 and swings the dish member 32 in a direction to drop the soil D1 received by the dish member 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pretreatment device for soil analysis, which treats soil collected from a farm before analyzing components contained in the soil. [Background technology]

[0002] The pretreatment device for soil analysis in Patent Document 1 is a pretreatment device that processes components contained in soil collected in a field before analysis, and is equipped with a container for holding the collected soil, an extraction mechanism for extracting a certain volume of soil from the container, and a weight calculation device for calculating the weight of the soil extracted by the extraction mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-096821 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the pretreatment device for soil analysis in Patent Document 1, a certain volume of soil can be taken out by the take-out mechanism, and the weight of the soil from the take-out mechanism can be calculated by the weight calculation device. However, the weight calculation device places the soil on the placement section of the weighing platform and calculates the weight of the soil, and if the soil after the weight calculation is to be used in soil analysis, it is necessary to properly remove the soil from the placement section.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a pretreatment device for soil analysis that appropriately and easily dispenses soil received from a measuring member. [Means for solving the problem]

[0006] The technical means adopted by the present invention to solve the above problems are characterized as follows.

[0007] A pretreatment device for soil analysis according to one embodiment of the present invention is a pretreatment device that processes components contained in soil collected in a field before analyzing them, and is equipped with a first container for holding the collected soil, a measuring member for removing a certain volume of soil from the soil held in the first container, a pan member for receiving the soil from the measuring member, and a drive device for supporting the pan member and oscillating the pan member in a direction to drop the soil received by the pan member.

[0008] The drive device may oscillate the pan member back and forth a number of times when dispensing soil received by the pan member.

[0009] The drive device may oscillate the dish member around an axis extending horizontally, and the dish member may be formed so that a middle portion is lower than both ends in the axial direction.

[0010] The middle portion of the dish member may be bent downward in a substantially V-shape.

[0011] The pretreatment device for soil analysis may include a sieving device for removing foreign matter from the soil contained in the first container, and a vibration device for vibrating the first container horizontally relative to the dish member when removing foreign matter with the sieving device.

[0012] The vibration device may be switchable between a sieving mode in which the first container and the weighing member are vibrated in the horizontal direction when removing foreign matter with the sieving device, and a dispensing mode in which the first container and the weighing member are vibrated in the horizontal direction when dispensing soil from the weighing member.

[0013] The dish member may be wider outside in the horizontal direction than a falling range in which soil falls from the measuring member by the vibration device in the dispensing mode.

[0014] The measuring member may have a hole penetrating in the vertical direction and a quantification section for removing the soil contained in the first container to the inside, the measuring member may be attached to the first container, and the quantification section may have a pair of wall sections extending downward on one and the other sides in the vibration direction of the vibration device.

[0015] The dish member may be wider outward in the vibration direction than the range of movement from the position of the wall portion on one side in the vibration direction when the wall portion on the one side is moved to one side of the dish member by the vibration device in the dispensing mode to the position of the wall portion on the other side in the vibration direction when the wall portion on the other side is moved to the other side of the dish member.

[0016] The pre-processing device for soil analysis is equipped with a weight detection device that detects the weight of the soil on the plate member, and the driving device oscillates the plate member around a oscillating axis extending horizontally, the oscillating axis being positioned below the plate member, and the weight detection device may be provided between the plate member and the oscillating axis.

[0017] The pre-treatment device for soil analysis may include a calculation device that calculates the weight based on the detection result detected by the weight detection device, and a second container provided below the plate member for storing the soil dispensed from the plate member, wherein the driving device performs a first operation of swinging the oscillating axis to tilt the plate member toward the second container, and a second operation of swinging the oscillating axis to tilt the plate member in a direction opposite to the first operation, and the calculation device may measure the weight of the plate member after the first operation and calibrate the weight detection device.

[0018] The pre-processing device for the soil analysis includes a support frame that supports the multiple weight detection devices together with the pan member, and a calculation device that calculates the weight detected by the weight detection devices, and the calculation device measures the weight of each of the soil received by the multiple pan members based on the detection results of the multiple weight detection devices. Effect of the Invention

[0019] According to the pretreatment device for soil analysis of the present invention, the soil received from the measuring member can be appropriately and easily dispensed. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a front perspective view of the pretreatment device for soil analysis of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a pretreatment process carried out in one of the plurality of first containers. [Diagram 3] FIG. 4 is a side view showing a pretreatment process carried out in one of the plurality of first containers. [Figure 4] FIG. 2 is a perspective view of a first container. [Diagram 5] XX cross-sectional view of FIG. 4. [Figure 6] 5 is a cross-sectional view taken along the line YY in FIG. 4 . [Figure 7] FIG. 11 is a cross-sectional view taken along line YY of a first container according to a modified example. [Figure 8] FIG. 4 is a perspective cross-sectional view showing the inside of a lower part of a first container. [Figure 9] FIG. 4 is a plan view showing a cover plate and a mesh plate. [Figure 10] FIG. 2 is a perspective view showing a measuring member and a push-out member. [Figure 11] FIG. 2 is a cross-sectional view of the pretreatment device with soil taken into the storage section. [Figure 12] FIG. 11 is a cross-sectional view of the pretreatment device in which soil has been taken from the storage section to the first metering section. [Figure 13] FIG. 11 is a cross-sectional view of the pretreatment device discharging soil from the first metering unit into a pan member. [Figure 14] FIG. 13 is a cross-sectional view of the pretreatment device discharging soil from the pan member. [Figure 15] 13 is a cross-sectional view of the pretreatment device discharging soil from the second metering unit into a pan member. FIG. [Figure 16] 13 is a cross-sectional view of the pretreatment device discharging the soil measured by the second measuring section from the pan member. FIG. [Figure 17]FIG. 2 is a perspective view showing a plurality of first containers and a heating device. [Figure 18] FIG. 4 is a cross-sectional view showing a ventilation state in the ventilation device. [Figure 19] FIG. 2 is an enlarged perspective view showing the inside of the ventilation device. [Figure 20] FIG. [Figure 21] FIG. 2 is a perspective view showing a weight calculation device, a plurality of second containers, and a measurement device. [Figure 22] FIG. 2 is an exploded perspective view of a pan member, a weight detection device, and a swing shaft. [Diagram 23] 11 is a front view showing the relationship between the vibration stroke of the dish member caused by the vibration mechanism and the lateral width of the dish member. FIG. [Figure 24] FIG. [Diagram 25] FIG. 11 is a perspective view showing a plurality of second containers and a second moving mechanism. [Figure 26] FIG. 2 is a cross-sectional view of a second container (first preparation container) with a lid attached to an opening portion. [Figure 27] FIG. [Figure 28] 11A and 11B are diagrams showing the deformation state of the first seal and the second seal when the lid body is attached to the opening portion. [Figure 29] 13A and 13B are diagrams showing the deformed state of the first seal and the second seal when the lid body of the first modified example is attached to the opening portion. [Diagram 30] 13A and 13B are diagrams showing the deformed state of the first seal and the second seal when the lid body of the second modified example is attached to the opening portion. [Diagram 31] FIG. [Figure 32A] FIG. 11 is a first diagram showing the operation of a second moving mechanism. [Figure 32B] FIG. 2 is a second diagram showing the operation of the second moving mechanism. [Figure 32C] FIG. 3 is a third diagram showing the operation of the second moving mechanism. [Fig. 32D] FIG. 4 is a fourth diagram showing the operation of the second moving mechanism. [Diagram 33]13 is a perspective view for comparing a lifting unit in a state where an electrode attachment part is lowered and a lifting unit in a state where an electrode attachment part is raised. FIG. [Figure 34A] FIG. 2 is a plan view of the pretreatment device showing a state in which a first electrode of the measurement device is inserted into a second preparation container to measure pH. [Figure 34B] FIG. 13 is a plan view of the pretreatment device, showing a state in which EC measurement is being performed by inserting a second electrode of the measurement device into a second preparation container. [Diagram 35] FIG. 13 is a front view of a measurement device comparing a case where a first electrode is inserted into a second preparation container and a case where a second electrode is inserted into the second preparation container. [Diagram 36] FIG. 2 is a block diagram of a control device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] A preferred embodiment of the pretreatment device 1 for soil analysis according to the present invention will now be described.

[0022] The pretreatment device 1 for soil analysis according to the present invention is a device for treating components contained in soil D1 collected in a farm field before analysis. In other words, the soil D1 pretreated by the pretreatment device 1 is subjected to soil analysis by an analysis device.

[0023] The pretreatment device 1 performs the processes shown in the following (P1) to (P12) before performing soil analysis on the components contained in the soil D1 collected in the field. Note that the processes (P1) to (P12) are given as an example of the flow of pretreatment performed by the pretreatment device 1 to explain the outline of the pretreatment performed by the pretreatment device 1. This does not mean that the operations performed by the pretreatment device 1 of the present invention necessarily follow (P1) to (P12). (P1) An operator places soil D1 in a first container 5. (P2) The pretreatment device 1 dries the soil D1 contained in the first container 5. (P3) The pretreatment device 1 horizontally vibrates the first container 5 containing the dried soil D1, and sieves the soil D1 to remove foreign matter. (P4) The pretreatment device 1 removes a certain volume of soil D1 from the soil D1 from which the foreign matter has been removed. (P5) The pretreatment device 1 dispenses the soil D1 into the tray member 32 in order to calculate the weight of the certain volume of the soil D1 that has been removed. (P6) The pretreatment device 1 dispenses the soil D1, the weight of which has been calculated, from the tray member 32 to the second container 80 (first preparation container 54). (P7) The pretreatment device 1 dispenses the soil D1, the weight of which has been calculated, from the tray member 32 to the second container 80 (second preparation container 55). (P8) The pretreatment device 1 supplies the extract to the first preparation container 54. (P9) The pretreatment device 1 supplies water (purified water) to the second preparation container 55. (P10) The pretreatment device 1 performs agitation in the second container 80. (P11) The pretreatment device 1 pressurizes the inside of the first preparation container 54, and filters the soil D1 after stirring. (P12) The pretreatment device 1 measures the pH and / or electrical conductivity (electrical conductivity rate) of the solution in the second preparation container 55.

[0024] In order to carry out the above-mentioned processes (P1) to (P12), the preprocessing device 1 has the configuration described below.

[0025] 1 will be referred to as the forward direction, the arrow A2 as the backward direction, the arrow B1 as the left direction, the arrow B2 as the right direction, the arrow C1 as the upward direction, and the arrow C2 as the downward direction. Also, the direction of arrow A will be referred to as the forward / backward direction, the direction of arrow B as the left / right direction (or the device width direction), and the direction of arrow C as the up / down direction.

[0026] 1, the pre-treatment device 1 includes a drying device 2, a sieving device 3, a weight calculation device 71, and an extraction device 4. In this embodiment, the pre-treatment device 1 also includes a support frame 39 for supporting the drying device 2, the sieving device 3, the weight calculation device 71, and the extraction device 4.

[0027] The support frame 39 has a lattice structure in which frame materials (e.g., long members) are combined in a cross shape in the front-rear direction A, the device width direction B, and the up-down direction C. Note that the support frame 39 only needs to be able to support components such as the drying device 2, the sieving device 3, the weight calculation device 71, and the extraction device 4 provided in the pre-treatment device 1, and its structure and configuration are not limited to the examples shown in Figs. 1 and 3, etc.

[0028] The pre-processing device 1 also includes a control device 64 (processing circuit) including one or more processors. The control device 64 is a controller of the pre-processing device 1, and performs various controls related to the pre-processing device 1. For example, the control device 64 performs control processes (operations) of the drying device 2, the sieving device 3, the weight calculation device 71, the extraction device 4, etc., based on signals (operation signals) input from an operation device (e.g., a switch or a touch panel) provided in the pre-processing device 1.

[0029] The control device 64 includes one or more memories, various analog circuits, various digital circuits, etc. The one or more memories store (store) software programs and various data to be executed by the one or more processors. The control device 64 can read software programs from the one or more memories using the one or more processors and execute various processes based on the software programs. Note that the control device 64 may also be able to execute various processes based on predetermined logic circuits using the one or more processors.

[0030] The processor may be, for example, a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processor (DSP), a field programmable gate array (FPGA), or an application specific integrated circuit (ASIC).

[0031] The control device 64 may execute various processes by having multiple physically separated processors work together, and the configuration is not limited to the above-mentioned configuration. <Drying equipment> First, the drying device 2 will be described. The drying device 2 is a device that dries soil D1 collected in a farm field. The drying device 2 has a first container 5, a heating device 6, and an aeration device 7. The first container 5 is a container that contains the collected soil D1. In this embodiment, the drying device 2 has a plurality of first containers 5, which are arranged, for example, in the device width direction B. In the example shown in FIG. 1 etc., the drying device 2 has five first containers 5.

[0032] The heating device 6 is a device for heating the soil D1 in the treatment of (P2). The aeration device 7 is a device for passing air through the inside of the first container 5 in the treatment of (P2). Therefore, the drying device 2 heats the soil D1 with the heating device 6, turns the moisture in the soil D1 into water vapor, and sends air to the first container 5 from the aeration device 7, thereby removing the water vapor. <1st container> As shown in Figures 4, 5, etc., the first container 5 has a storage section 8 that stores soil D1, and a measuring member 9 that weighs and removes the soil. The storage section 8 is provided in the upper part of the first container 5. The measuring member 9 is provided in the lower part of the first container 5. The storage section 8 and the measuring member 9 are integrated to form the first container 5.

[0033] The storage section 8 is formed in a tubular (cylindrical) shape. The storage section 8 is made of a material with high thermal conductivity, such as metal. An intake 10 for putting in the collected soil D1 is provided at the top of the storage section 8 (top of the first container 5). More specifically, the top of the storage section 8 is open, and this opening at the top of the storage section 8 constitutes the intake 10. The intake 10 is, for example, circular in plan view. In addition, the upper end of the storage section 8 is extended radially outward, and an annular flange 5b is formed around the intake 10.

[0034] 5, an extraction hole 11 for extracting soil D1 is provided in the lower part of the storage part 8. In detail, the lower part of the storage part 8 opens downward, and this opening in the lower part of the storage part 8 constitutes the extraction hole 11. The extraction hole 11 is, for example, circular in a plan view.

[0035] As shown in Figs. 4, 5, etc., the storage section 8 is provided with an air vent 5c at a position different from the intake port 10 (in this embodiment, on the side surface of the storage section 8).

[0036] 5, a mesh plate 15 and a cover plate 16 are disposed inside the first container 5. The mesh plate 15 is a member that constitutes a part of the sieving device 3, which will be described later.

[0037] As shown in Figures 8 and 9, the mesh plate 15 is circular when viewed from above (when viewed in a plan view). The mesh plate 15 has a passing portion 15a that allows soil D1 with a particle size less than a predetermined size to pass through. The passing portion 15a is formed in the center of the mesh plate 15. The passing portion 15a has an outer shape that is circular in a plan view. The diameter of the passing portion 15a is approximately equal to the radius of the mesh plate 15. The passing portion 15a is surrounded by a non-passing portion 15b that does not allow the soil D1 to pass through. The non-passing portion 15b is formed in an annular shape in a plan view.

[0038] As shown in FIG. 8, the passing portion 15a is recessed from the non-passing portion 15b by the thickness of the non-passing portion 15b. The passing portion 15a has a plurality (a large number) of small holes 15d. The small holes 15d allow the passage of soil D1 having a particle size less than a predetermined size that is crushed by the sieving process by the sieving device 3. The small holes 15d also prevent the passage of foreign matter having a predetermined size or more. In other words, foreign matter having a predetermined size or more cannot pass through the small holes 15d. Therefore, the mesh plate 15 prevents the passage of foreign matter having a predetermined size or more contained in the soil D1 contained in the first container 5 and having a particle size less than the predetermined size, and allows the passage of soil D1 having a particle size less than the predetermined size.

[0039] 9, mesh plate 15 is disposed so as to cover extraction hole 11. The outer diameter of mesh plate 15 is larger than the inner diameter of extraction hole 11. Soil D1 that has passed through passage portion 15a of mesh plate 15 is extracted from extraction hole 11. Soil D1 that has passed through passage portion 15a of mesh plate 15 and is extracted from extraction hole 11 contains only soil D1 having a particle size smaller than a predetermined size.

[0040] As shown in Figures 8 and 9, a cover plate 16 is placed on the mesh plate 15. The cover plate 16 is arranged so as to cover the passing portion 15a of the mesh plate 15. The diameter of the cover plate 16 is approximately the same as the outer diameter of the passing portion 15a. The cover plate 16 is a plate that does not have holes through which the soil D1 can pass (a non-perforated plate). The cover plate 16 is circular in a plan view. The diameter of the cover plate 16 is approximately equal to the radius of the mesh plate 15.

[0041] In the following description, the position where the cover plate 16 overlaps the mesh plate 15 and the passing portion 15a is completely covered by the cover plate 16 is referred to as the "center position." At this center position, the center of the cover plate 16 is located at the center of the extraction hole 11 (mesh plate 15) and the passing portion 15a is covered by the cover plate 16, so that the soil cannot pass through the mesh plate 15.

[0042] On the other hand, when the position of the cover plate 16 is shifted from the central position and is in a position close to the first container 5, this position close to the first container 5 is called the "peripheral position". At this peripheral position, at least a part of the cover plate 16 protrudes outside the passing portion 15a. When the cover plate 16 is in the peripheral position, the center of the cover plate 16 is shifted from the center of the extraction hole 11 (mesh plate 15), and at least a part of the passing portion 15a is not covered by the cover plate 16. In other words, at least a part of the passing portion 15a (the part including the small hole 15d) is exposed from the cover plate 16. Therefore, the soil D1 passes through the mesh plate 15 without being blocked by the cover plate 16 and falls downward.

[0043] As shown in Figs. 9 and 10, a holding member 31 is provided inside the first container 5. The holding member 31 is a member for holding the cover plate 16 inside the first container 5. The holding member 31 holds the cover plate 16 movably between a central position and a peripheral position, and applies a restoring force that restores the cover plate 16 to the central position. That is, when the first container 5 is vibrated in the process of (P3), the holding member 31 reciprocates the cover plate 16 between the central position and the peripheral position. On the other hand, when the first container 5 is not vibrated, the holding member 31 restores the cover plate 16 to the central position.

[0044] Therefore, by providing the holding member 31, when the first container 5 is not vibrated horizontally by the process of (P3), the cover plate 16 is held in the central position. This prevents the soil D1 from unintentionally dropping (passing) into the passing section 15a when the first container 5 is not vibrated horizontally. In other words, in the first container 5 of this embodiment, the contained soil D1 does not drop into the passing section 15a unless the process of (P3) is performed.

[0045] Specifically, the holding member 31 is an elastic body that connects the upper part of the cover plate 16 and the inside of the first container 5. The holding member 31 is a spring member having one end connected to the cover plate 16 and the other end connected to the inside of the first container 5. The holding member 31 is, for example, a long leaf spring 31a.

[0046] One end of the leaf spring 31a in the longitudinal direction is fixed to the upper surface of the cover plate 16. The other end of the leaf spring 31a in the longitudinal direction is fixed to the storage section 8 (first container 5). As shown by the two-dot chain line in the center of FIG. 9, in a state where no horizontal vibration is applied to the first container 5 (free state), the leaf spring 31a is attached so that the cover plate 16 attached to the one end of the leaf spring 31a is located at the center position. In this embodiment, one end of the leaf spring 31a in the longitudinal direction is located at the center of the passing section 15a and is attached to the center of the cover plate 16. The other end of the leaf spring 31a in the longitudinal direction is attached to the non-passing section 15b of the mesh plate 15, and the leaf spring 31a extends in the radial direction of the passing section 15a in a plan view.

[0047] In the above embodiment, the holding member 31 is the leaf spring 31a, but a member other than the leaf spring 31a may be used for the holding member 31. For example, a plurality of helical springs may be attached to the inner peripheral surface of the first container 5. In such a case, the plurality of helical springs are attached to the first container 5 at equal intervals in the circumferential direction, and the ends of the helical springs opposite to the inner peripheral surface of the first container 5 are attached to the cover plate 16.

[0048] Furthermore, the holding member 31 is not limited to an elastic member, and for example, a magnet acting on the cover plate 16 may be adopted as the holding member 31. In such a case, for example, a plurality of magnets may be provided at equal intervals in the circumferential direction of the first container 5 as the holding member 31, and a magnet with its magnetic poles oriented so as to receive a repulsive force from the plurality of magnets may be attached to the cover plate 16.

[0049] As shown in Figs. 5, 6 and 8, a conduit 17 for dropping soil D1 toward the measuring member 9 is provided below the mesh plate 15 of the first container 5. The conduit 17 is provided above the measuring member 9. The conduit 17 is made of a transparent material (e.g., glass). The first container 5 has a window hole 18 for making the conduit 17 visible from outside the first container 5 (see Fig. 6). The window hole 18 penetrates the lower part of the first container 5 in the front-rear direction. The window hole 18 is provided below the removal hole 11 and above the measuring member 9.

[0050] As shown in Figures 5, 6, etc., the pipe 17 penetrates the center of the window hole 18 in the front-to-rear direction in the up-down direction C. Hereinafter, the part of the window hole 18 that is in front of the pipe 17 will be referred to as the "window hole front part 18a", and the part of the window hole 18 that is behind the pipe 17 will be referred to as the "window hole rear part 18b". The pipe 17 can be seen from outside the first container 5 through the window hole front part 18a or the window hole rear part 18b. A detection device 33 that detects overflowing soil D1 is provided in front of the window hole front part 18a and behind the window hole rear part 18b.

[0051] The conduit 17 is disposed below the storage section 8 (below the removal hole 11). As shown in Figs. 5 and 6, the lower part of the storage section 8 and the upper part of the conduit 17 are connected by a connecting passage 19. The connecting passage 19 is formed in a tapered shape (frustum of a cone) whose inner diameter becomes smaller toward the bottom.

[0052] As shown in Figures 11, 12, etc., the pre-treatment device 1 is provided with a detection device 33 that detects soil D1 overflowing from the measuring member 9 (specifically, from the quantification unit 14 described later). The detection device 33 is connected to the control device 64 and outputs the detection result to the control device 64. When the pre-treatment device 1 includes a plurality of first containers 5 as in this embodiment, a plurality of detection devices 33 are provided corresponding to the respective measuring members 9 of the plurality of first containers 5. This allows the detection device 33 to individually detect the soil D1 overflowing from the respective measuring members 9 of the plurality of first containers 5 (from the quantification unit 14).

[0053] The detection device 33 detects soil D1 overflowing from the quantification section 14 of the measuring member 9 (soil D1 that did not fit into the quantification section 14). The detection device 33 has an irradiation section 33a that irradiates light and a light receiving section 33b that detects the light irradiated from the irradiation section 33a. The irradiation section 33a irradiates light toward the pipeline 17. The light receiving section 33b detects the light that has passed through the pipeline 17. The irradiation section 33a is provided in the front of the first container 5 and is attached forward of the pipeline 17 in the center of the first container 5 and the vertical through hole 36a located at the bottom of the pipeline 17. The light receiving section 33b is provided in the rear of the first container 5 and is attached rearward of the pipeline 17 and the vertical through hole 36a located at the bottom of the pipeline 17.

[0054] As a result, the irradiation unit 33a and the light receiving unit 33b are disposed on either side of the duct 17 or the vertical through-hole 36a of the first container 5. In the illustrated example, the irradiation unit 33a is disposed in front of the first container 5, and the light receiving unit 33b is disposed in the rear of the first container 5, but the front-to-rear positional relationship between the irradiation unit 33a and the light receiving unit 33b may be reversed.

[0055] As shown in FIG. 10, the measuring member 9 is a member that extracts a certain volume of soil D1 from the soil D1 contained in the first container 5 in the process (P4). The measuring member 9 is fitted into a through hole 5d that is drilled horizontally in the first container 5, and is movable inside the through hole 5d. The measuring member 9 is moved along the through hole 5d by a first moving mechanism 20, which will be described later. The measuring member 9 is also detachable from the through hole 5d. The through hole 5d penetrates the lower part of the first container 5 in the movement direction of the measuring member 9 (the front-back direction in this embodiment).

[0056] A cutout portion 5e is formed at the front lower portion of the through hole 5d. The cutout portion 5e is formed by cutting the lower portion of the first container 5 vertically downward.

[0057] As shown in Fig. 10, the weighing member 9 is formed in a cylindrical shape with its axis oriented in the front-rear direction. Specifically, the weighing member 9 has a cylindrical side surface 9a and circular front and rear surfaces 9b and 9c. A plurality of metering sections 14 are formed in the middle of the side surface 9a in the front-rear direction, connecting the upper and lower parts of the side surface 9a in the up-down direction C. The front surface 9b and rear surface 9c are formed in a flat surface shape.

[0058] The quantification section 14 is a hole (through hole) that penetrates in the vertical direction, and is capable of taking in the soil D1 contained in the first container 5. The quantification section 14 penetrates the measuring member 9 in the up-down direction C from the upper side surface 9a to the lower side surface 9a of the measuring member 9. The quantification section 14 is configured to measure a certain volume (for example, 1 cm 3 That is, the volume of the metering unit 14 is set to a volume that can accommodate a certain volume of soil D1.

[0059] As shown in Fig. 10, the quantitative portion 14 is formed in a cylindrical shape with a constant hole area from the top to the bottom. The quantitative portion 14 may be formed in a tapered shape (frustum shape) with the hole area gradually increasing from the top to the bottom.

[0060] In this embodiment, the measuring member 9 includes a first quantification portion 14a and a second quantification portion 14b different from the first quantification portion 14a as a plurality of quantification portions 14. The first quantification portion 14a and the second quantification portion 14b are formed to be spaced apart in the front-rear direction of the measuring member 9. In this embodiment, the first quantification portion 14a and the second quantification portion 14b have the same opening diameter and can accommodate the same volume of soil D1. The volumes of soil D1 that can be accommodated by the first quantification portion 14a and the second quantification portion 14b do not have to be the same. In this case, for example, the opening diameters of the first quantification portion 14a and the second quantification portion 14b may be different.

[0061] As shown in Fig. 10, a recess 9d is provided on the rear surface 9c of the measuring member 9. The recess 9d is recessed toward the front. The tip of the push-out member 21, which will be described later, fits into the recess 9d (see Figs. 11 to 16).

[0062] The measuring member 9 can be moved between take-out positions Pa, Pc (see Figs. 11 to 14) and dispensing positions Pb, Pd (see Figs. 13 to 16) by the first moving mechanism 20. The take-out positions Pa, Pc are positions inside the first container 5 where a certain volume of soil D1 is measured by the measuring member 9. Specifically, the take-out positions Pa, Pc are positions where the measuring hole 13d of the measuring member 9 is inside the first container 5 and where the measuring hole 13d can receive a certain volume of soil D1 dropping from the pipeline 17.

[0063] The dispensing positions Pb and Pd are positions where a certain volume of soil D1 measured by the measuring member 9 is taken out of the first container 5. Specifically, the dispensing positions Pb and Pd are positions where the measuring hole 13d of the measuring member 9 is outside the first container 5 and where the certain volume of soil D1 filled in the measuring hole 13d can be dropped.

[0064] The first moving mechanism 20 moves the weighing member 9 to take-out positions Pa, Pc corresponding to each of the multiple quantity units 14 and / or dispensing positions Pb, Pd corresponding to each of the multiple quantity units 14. In this embodiment, the first moving mechanism 20 moves the weighing member 9 to a take-out position (first take-out position Pa) corresponding to the first quantity unit 14a, a take-out position (second take-out position Pc) corresponding to the second quantity unit 14b, a dispensing position (first dispensing position Pb) corresponding to the first quantity unit 14a, and a dispensing position (second dispensing position Pd) corresponding to the second quantity unit 14b.

[0065] In this embodiment, when the metering member 9 is located at the first dispensing position Pb, the pipeline 17 and the second quantification unit 14b are aligned in the vertical direction C (aligned at the same position in the front-rear direction). In other words, in this embodiment, the first dispensing position Pb and the second removal position Pc are the same. Therefore, it is possible to dispense the soil D1 from the first quantification unit 14a into the lower tray member 32, and at the same time, to remove the soil D1 that has been sent through the pipeline 17 to the first quantification unit 14a.

[0066] In this embodiment, the first dispensing position Pb and the second take-out position Pc are the same, but the first dispensing position Pb and the second take-out position Pc do not necessarily have to be the same. The first dispensing position Pb may be located forward of the second take-out position Pc, or the first dispensing position Pb may be located rearward of the second take-out position Pc.

[0067] The first moving mechanism 20 has a push-out member 21. The push-out member 21 is a rod-shaped member that can be inserted into the through-hole 5d. The first moving mechanism 20 has a driving device 65 such as a motor, a driving shaft 21b that is rotationally driven by the driving device 65, and a pushing member 21c that is screwed onto the driving shaft 21b and can reciprocate in the front-rear direction.

[0068] The driving device 65 is controlled by the control device 64. The control device 64 has a first movement control unit 64a, which is a program that outputs a pushing command to the first moving mechanism 20. The pushing command includes conditions on how far to push the push-out member 21 forward, specifically conditions such as the number of rotations and the direction of rotation of the motor of the driving device 65. The first moving mechanism 20 pushes the push-out member 21 forward based on the pushing command.

[0069] The first movement control unit 64a of the control device 64 may output a storage command in addition to the pushing command to the first moving mechanism 20. The storage command includes conditions such as the number of rotations and the direction of rotation of the motor of the drive device 65 for moving the push-out member 21 backward.

[0070] In the present embodiment, the pushing member 21c is common so as to simultaneously push all of the multiple (five) push-out members 21 arranged in the device width direction B. For example, the pushing member 21c is a long plate member in the device width direction B, and is capable of simultaneously and integrally pushing the multiple push-out members 21 in the front-rear direction.

[0071] 11 to 16, the pushing member 21 is inserted by the pushing member 21c toward the through hole 5d formed in the first container 5, and pushes out a part (front part) of the measuring member 9 from the through hole 5d. The tip of the pushing member 21 is formed in a semispherical shape, and fits into the measuring hole 13d of the measuring member 9 when pushing out the measuring member 9 (see FIG. 10). This determines the position of the tip of the pushing member 21 relative to the measuring member 9.

[0072] As shown in Figures 11 to 16, the pushing member 21 pushes out a portion of the measuring member 9 from the through hole 5d until the first metering section 14a or the second metering section 14b is in communication with the cutout portion 5e of the first container 5 and the opening at the lower end of the first metering section 14a or the second metering section 14b is opened downward (until the first dispensing position Pb or the second dispensing position Pd is reached).

[0073] In this embodiment, the movement of the weighing member 9 is performed by the push-out member 21. However, the movement of the weighing member 9 toward the rear may be caused by pushing the weighing member 9 with a finger or the like to return it to the rear, or the tip of the push-out member 21 may be fixed to the weighing member 9 so that the weighing member 9 returns to the rear as the push-out member 21 retreats. <Heating device> The heating device 6 is a device that heats the first containers 5 (accommodation section 8) in the process (P2). As shown in FIG. 17, the heating device 6 has a fixing section 35 and a heater 38. The fixing section 35 is a section that fixes (supports) the multiple first containers 5. The heater 38 is provided on the fixing section 35 and heats the fixing section 35. The heater 38 generates heat when electricity is applied, and heats the multiple first containers 5 fixed to the fixing section 35.

[0074] Therefore, by operating the heating device 6 (by passing electricity through the heater 38), the fixing part 35 is heated, and the storage part 8 is heated via the fixing part 35. This makes it possible to promote drying of the soil D1 stored in the storage part 8.

[0075] Specifically, the fixing portion 35 is a metal plate having fixing holes 35a formed therein for respectively fixing the multiple first containers 5. The fixing portion 35 is a generally rectangular plate member that is elongated in the device width direction B. The fixing portion 35 has fixing holes 35a formed therein in a number corresponding to the number of first containers 5 included in the drying device 2.

[0076] As shown in Figs. 8 and 17, the fixing hole 35a is a through hole penetrating in the vertical direction C. It is formed in a shape corresponding to the outer peripheral surface of the container body 5a. In this embodiment, the fixing hole 35a is formed in a substantially cylindrical shape with a central axis facing the vertical direction C. Therefore, the container body 5a of the first container 5 can be inserted from above into the inside (inner peripheral side) of the heating device 6. As a result, the periphery of the container body 5a is covered by the heating device 6.

[0077] The heater 38 is disposed between the multiple first containers 5 in the fixing portion 35. The heater 38 is provided inside or outside the fixing portion 35 and heats the fixing portion 35. In the present embodiment, the heater 38 includes multiple heat generating portions 38a provided inside the fixing portion 35.

[0078] The heat generating parts 38a are sheath heaters that generate heat when supplied with power. The heat generating parts 38a are arranged on both sides of the first container 5 in the device width direction B. That is, the heat generating parts 38a are arranged between the first containers 5 adjacent to each other in the device width direction B in the fixed part 35, at the left part of the leftmost first container 5, and at the right part of the rightmost first container 5. In other words, the space between the first containers 5 is partitioned by the heat generating parts 38a.

[0079] The heating state of the multiple heat generating parts 38a is controlled by the control device 64. The control device 64 has a heating control part 64b, which is a program that outputs a heating command to the multiple heat generating parts 38a. The fixed part 35 is provided with one or more temperature sensors (e.g., thermocouples), which detect the temperature of the fixed part 35. The temperature sensors are connected to the control device 64, and output the detection results to the control device 64. The heating control part 64b controls the multiple heat generating parts 38a according to the detection results of the temperature sensors (the temperature of the fixed part 35).

[0080] The heating control unit 64b may individually control the multiple heat generating units 38a and may differentiate the heating states of the multiple first containers 5. In this case, when the moisture retention states of the soil D1 supplied to the multiple first containers 5 are different, the heating control unit 64b controls the multiple heat generating units 38a to heat the first container 5 supplied with the soil D1 having a relatively high moisture content more strongly than the first container 5 supplied with the soil D1 having a relatively low moisture content.

[0081] In addition, a moisture sensor may be provided inside the first container 5 to detect the moisture content of the soil D1 and output the detection result to the control device 64, and the heating control unit 64b may control the multiple heating elements 38a according to the detection result of the moisture sensor and the detection result of the temperature sensor, or an operator may operate an operating device to set the moisture content of the soil D1 in each first container 5. <Ventilation device> Next, the ventilation device 7 will be described. The ventilation device 7 has a main body 12 and a fan 27. The main body 12 (shroud) has a plurality of communication holes 22 that respectively communicate with the inlets 10 of the first containers 5, and is a member through which air discharged from the first containers 5 passes through the plurality of communication holes 22 (see Figs. 18 and 19). As shown in Figs. 1, 3, and 18, the main body 12 is disposed so as to cover the upper part of the first container 5. More specifically, the main body 12 covers the inlet 10 of the first container 5. The main body 12 can be swung backward by a pivot part (hinge) 12e provided at the rear (see Fig. 3). By swinging the main body 12 backward, the inlet 10 opens upward, and the soil D1 can be input through the inlet 10. The pivot part 12e connects the main body 12 to the exterior of the pretreatment device 1.

[0082] As shown in Figures 18 and 19, the main body 12 is a box-shaped member with a hollow interior. The main body 12 has a bottom 12d arranged facing at least downward (the upper surface side of the flange 5b of the first container 5). The bottom 12d is in close contact with the upper surface of the flange 5b of the first container 5. The main body 12 also has a peripheral wall 12b extending upward from the outer edge of the bottom 12d, and a ceiling 12c arranged opposite the bottom 12d and forming an internal space of the main body 12 together with the bottom 12d and the peripheral wall 12b.

[0083] The communication hole 22 is formed in the bottom 12d and is disposed slightly above the intake 10 of the first container 5. That is, in this embodiment, the multiple communication holes 22 are formed in the bottom 12d side by side in the device width direction B. The main body 12 is provided with a fan 27, which will be described later, and when the fan 27 is driven, air flows from inside the multiple first containers 5 through the multiple communication holes 22 into the internal space of the main body 12.

[0084] Moreover, around the plurality of communication holes 22 of one first container 5, a protruding portion 22a that protrudes upward is formed between the communication holes 22 of the other first container 5. The protruding portions 22a are steps that protrude upward along the outer periphery of each of the plurality of communication holes 22. The protruding portions 22a are formed inside the main body portion 12, and protrude upward from the upper surface of the bottom portion 12d.

[0085] In this embodiment, the protruding portion 22a is a cylindrical portion extending upward from the outer periphery of each of the plurality of communication holes 22. A covering wall portion having a plurality of small holes is provided on the upper portion of the protruding portion 22a. Therefore, in Fig. 18 and Fig. 19, the protruding portion 22a is a recess recessed upward from the lower side of the bottom portion 12d.

[0086] Note that the protrusion 22a only needs to protrude upward around the multiple communication holes 22 of one first container 5 and between the communication holes 22 of the other first container 5, and may be a rib (partition) that partitions between the multiple communication holes 22 and protrudes upward. The rib is disposed between the multiple communication holes 22 of one first container 5 and the communication holes 22 of the other first container 5, protrudes upward, and, together with the inner wall of the main body 12, partitions the periphery of each communication hole 22.

[0087] An exhaust port 26 is formed in the peripheral wall 12b of the main body 12. The exhaust port 26 is formed in the rear surface (back wall) of the peripheral wall 12b, and is a hole penetrating in the front-rear direction. The exhaust port 26 is a circular hole in a front view. The exhaust port 26 is a hole that communicates between the internal space of the main body 12 and the outside, and exhausts air that has flowed into the internal space from the multiple first containers 5 via the multiple communication holes 22 to the outside of the main body 12.

[0088] The fan 27 is provided in the main body 12 and draws air from inside the multiple first containers 5 into the inside (internal space) of the main body 12. In this embodiment, the fan 27 is provided in the exhaust port 26 of the main body 12 and exhausts air from the internal space of the main body 12 to the outside via the exhaust port 26.

[0089] Since the multiple communication holes 22 communicate with the internal space of the main body 12, the fan 27 draws the air in the multiple first containers 5 into the internal space of the main body 12 and collects the air in the internal space. Furthermore, the fan 27 sends the air collected in the internal space of the main body 12 out through the exhaust port 26 to the outside.

[0090] In this embodiment, the fan 27 is provided rearward as viewed from the exhaust port 26 on the rear wall of the main body 12, and is an intake fan that draws air out of the main body 12 through the exhaust port 26. Note that the fan 27 may be provided forward as viewed from the exhaust port 26, that is, inside the first container 5, and may be a blower fan that sends the air in the main body 12 to the outside.

[0091] In the example shown in FIG. 18, the main body 12 is provided with a single fan 27, but a plurality of fans 27 may be provided.

[0092] The fan 27 is driven by a motor, and the motor is controlled by the control device 64. The control device 64 has an aeration control unit 64c, which is a program that outputs an aeration command to the fan 27. The aeration command includes conditions such as the number of revolutions and the rotation time of the fan 27. When the fan 27 is driven under the control of the control device 64 (ventilation control unit 64c), air outside the first container 5 is taken into the inside of the storage unit 8 of the first container 5 through the ventilation hole 5c, passes through the soil D1 stored in the storage unit 8, and is taken out from the intake port 10 into the main body 12. The air taken out into the main body 12 is exhausted to the outside of the main body 12 through the exhaust port 26 of the main body 12.

[0093] As described above, by driving the fan 27 of the ventilation device 7, air passes through the soil D1 contained in the storage section 8. As a result, the moisture contained in the soil D1 turns into water vapor and is taken out of the first container 5 together with the air, accelerating the drying of the soil D1.

[0094] As described above, the drying device 2 can promote the drying of the soil D1 contained in the first container 5 in the treatment (P2) by both the heating device 6 and the aeration device 7. Therefore, the soil D1 contained in the first container 5 can be dried in a short time.

[0095] Next, a description will be given of the sieving device 3. The sieving device 3 removes foreign matter from the soil D1 dried by the drying device 2. <Sieving device> The sieving device 3 has the above-mentioned mesh plate 15 and a vibration mechanism 40 that vibrates the first container 5. The configuration and arrangement of the mesh plate 15 are as described above. The vibration mechanism 40 will be described below. <Vibration mechanism> 20, the vibration mechanism 40 has a first motor 41, a motion converter 42, a container support member 63, a slider 43, a first support shaft 58, and a second support shaft 59. In this embodiment, an example of the vibration mechanism 40 that simultaneously and integrally vibrates a plurality of first containers 5 is shown.

[0096] The vibration mechanism 40 can be switched between a sieving mode and a dispensing mode. The sieving mode is a mode in which the first container 5 and the weighing member 9 are vibrated in the horizontal direction when foreign matter is removed by the sieving device 3. The dispensing mode is a mode in which the first container 5 and the weighing member 9 are vibrated in the horizontal direction when soil D1 is dispensed from the weighing member 9.

[0097] As shown in Fig. 20, the first motor 41 generates a driving force for vibrating the first container 5. The first motor 41 is controlled by the control device 64. The first motor 41 is disposed at the upper rear part of the support frame 39. The first motor 41 is fixed to the support frame 39 via a first motor support plate. The first motor 41 has a rotating shaft 41a extending forward.

[0098] The control device 64 has a first sieve control unit 64d for controlling the sieve mode. The first sieve control unit 64d is a program that drives the first motor 41 and outputs a first sieve command to vibrate the first container 5 in the horizontal direction when removing foreign matter with the sieve device 3 in the sieve mode. The first sieve command specifies the conditions of the number of rotations of the first motor 41 (i.e., how many times the first container 5 is vibrated in the horizontal direction) and the rotation time (i.e., how many seconds the first container 5 is vibrated in the horizontal direction). When the first sieve command is input, the first motor 41 rotates by a predetermined number of rotations, vibrates the first container 5 for a predetermined number of times, and sieves the soil D1 through the mesh plate 15.

[0099] The control device 64 also has a second sieve control unit 64e for controlling the dispensing mode. The second sieve control unit 64e is a program that drives the first motor 41 and outputs a second sieve command to vibrate the first container 5 in the horizontal direction when dispensing the soil D1 from the first quantification unit 14a or the second quantification unit 14b of the measuring member 9 to the tray member 32 in the dispensing mode. The second sieve command specifies the conditions of the number of rotations of the first motor 41 (i.e., how many times the first container 5 is vibrated in the horizontal direction) and the rotation time (i.e., how many seconds the first container 5 is vibrated in the horizontal direction, for example, 10 to 30 seconds). When the second sieve command is input, the first motor 41 rotates by a predetermined number of rotations, vibrates the first container 5 for a predetermined number of times, and drops the soil D1 remaining in the first quantification unit 14a or the second quantification unit 14b to the tray member 32.

[0100] The motion conversion unit 42 converts the rotational motion of the rotating shaft 41a of the first motor 41 into a reciprocating motion in the device width direction B (device width direction). Specifically, the motion conversion unit 42 has a first cam 46, a regulating plate 47, and a connection pin 61. The first cam 46 is attached to the tip of the rotating shaft 41a and rotates integrally with the rotating shaft 41a. The first cam 46 is provided with a connection pin 61 that protrudes forward at a position eccentric to the rotation axis of the rotating shaft 41a. The regulating plate 47 is formed with a regulating groove 62 that extends along the up-down direction C. The tip of the connection pin 61 is inserted into the regulating groove 62 so as to be movable in the up-down direction C.

[0101] 20, the connection pin 61 is provided at a position eccentric to the rotation shaft 41a (a position eccentric to the axis of the rotation shaft 41a). Therefore, as the rotation shaft 41a rotates, the connection pin 61 rotates in a circular trajectory in a front view centered on the axis of the rotation shaft 41a.

[0102] The restricting plate 47 is attached to the rear surface of the container support member 63, and the connection pin 61 inserted into the restricting groove 62 is allowed to move in the up-down direction C, but is not allowed to move in the device width direction B. Therefore, when the rotating shaft 41a is rotated, the reciprocating movement of the connection pin 61 in the device width direction B causes the container support member 63 to also move back and forth in the device width direction B.

[0103] The container support member 63 is a member that supports the drying device 2. The rear surface of the container support member 63 is fixed to the slider 43. The slider 43 includes a first slider 43a and a second slider 43b that is provided below the first slider 43a.

[0104] The first slider 43a is disposed midway in the up-down direction C on the rear surface of the container support member 63. At least two first sliders 43a (two in this embodiment) are provided at a distance in the device width direction B. A first support shaft 58 provided on the support frame 39 is inserted into the first slider 43a so as to be movable (slidable) in the device width direction B.

[0105] The second slider 43b is disposed at the lower end of the rear surface of the container support member 63. At least two second sliders 43b (two in this embodiment) are provided at a distance in the device width direction B. A second support shaft 59 provided on the support frame 39 is inserted into the second slider 43b so as to be movable (slidable) in the device width direction B.

[0106] In this embodiment, the slider 43 is described as including two or more first sliders 43a and two or more second sliders 43b, but is not limited to this, and the slider 43 may be a single member.

[0107] The first support shaft 58 and the second support shaft 59 extend in the device width direction B and are arranged parallel to each other with a distance therebetween in the up-down direction C. The first support shaft 58 and the second support shaft 59 are installed parallel to the rear surface of the container support member 63 formed as a vertical surface.

[0108] The power transmission of the first motor 41 will be described with reference to Figure 20. When the rotating shaft 41a of the first motor 41 rotates in one direction (the direction of the arrow in Figure 20), the connection pin 61 of the first cam 46 rotates around the rotating shaft 41a. When the connection pin 61 rotates, the connection pin 61 moves in the vertical direction C within the regulating groove 62. The connection pin 61 also moves back and forth in a direction perpendicular to the regulating groove 62, but the movement of the connection pin 61 along the device width direction B is regulated. Therefore, the container support member 63 moves back and forth in the device width direction B.

[0109] In this way, the vibration mechanism 40 can reciprocate the container support member 63 in the device width direction B by rotation of the first motor 41. As a result, the drying device 2 supported by the container support member 63 reciprocates and vibrates in the device width direction B. As a result, the first container 5 of the drying device 2 reciprocates and vibrates in the device width direction B.

[0110] Here, the soil D1 in the first container 5 is easily crushed by vibration because it has been dried by the drying device 2. Therefore, by vibrating the first container 5 by the vibration mechanism 40, the soil D1 in the first container 5 is crushed into fine particles. As a result, most of the soil D1 in the first container 5 can pass through the small holes 15d and fall. On the other hand, foreign matter contained in the soil D1 (e.g., plastic pieces, glass pieces, etc.) cannot be broken into fine particles by vibration and cannot pass through the small holes 15d. Therefore, the soil D1 that passes through the small holes 15d and falls toward the measuring member 9 is soil D1 with a predetermined particle size or less that contains almost no foreign matter. <Weight calculation device> Next, the weight calculation device 71 will be described. The weight calculation device 71 is a device for calculating the weight of a certain volume of soil D1 dispensed from the measuring member 9 in the process of (P5). The weight calculation device 71 includes a pan member 32, a driving device 65, and a weight detection device (detection device) 68. The weight calculation device 71 has pan members 32 in a number corresponding to the number of first containers 5 included in the drying device 2.

[0111] 2, 3, etc., the dish member 32 is disposed below the measuring member 9 and receives the soil D1 from the measuring member 9. The dish member 32 is supported by a drive device 65.

[0112] As shown in FIG. 21, the middle part of the dish member 32 is formed lower than both ends in the device width direction B (axial direction of the swing shaft 52 of the drive device 65 described later). The dish member 32 is capable of retaining the soil D1 from the measuring member 9 at the lower middle part. In the case of this embodiment, as shown in FIG. 22 and other figures, the dish member 32 is formed by combining two plate members extending in the front-rear direction in a V-shaped cross shape. That is, in the dish member 32 of this embodiment, the cross section of the middle part of the dish member 32 in the front-rear direction cut along the device width direction B is bent downward in an approximately V-shape. By using the dish member 32 in which the middle part in the device width direction B is bent downward in an approximately V-shape, not only can the soil D1 be reliably held at the recessed middle part, but the soil D1 can be smoothly slid down along the recessed middle part when the dish member 32 is tilted.

[0113] The driving device 65 supports the dish member 32 and swings the dish member 32 in a direction to drop the soil D1 received by the dish member 32 in the processes of (P6) and (P7). The driving device 65 has a swing motor 66 provided on the left part of the support frame 39 and a swing shaft 67 rotated by the swing motor 66.

[0114] The swing motor 66 generates a driving force for rotating the swing shaft 67. The swing motor 66 is controlled by the control device 64. As shown in Fig. 1, the swing motor 66 is fixed to the left part of the support frame 39, and has a drive shaft that extends horizontally to the right. The swing shaft 67 is provided at the tip (right end) of the drive shaft via a coupling joint 66a. The swing motor 66 is, for example, a servo motor that can switch the rotation direction and control the rotation angle.

[0115] 21, the swing shaft 67 extends in the device width direction B, and in this embodiment is formed in a round bar shape. A plurality of plate members 32 are attached to the swing shaft 67 at predetermined intervals in the device width direction B.

[0116] That is, in the drive device 65, when the swing motor 66 is rotated to swing the swing shaft 67, the plurality of (five in this embodiment) dish members 32 attached to the swing shaft 67 can be swung at once.

[0117] When dispensing the soil D1 received by the tray member 32, the drive device 65 switches the rotation direction of the rocking motor 66 between forward and reverse, thereby rocking the tray member 32 back and forth multiple times. By rocking the tray member 32 back and forth multiple times in this manner, it is possible to drop all of the soil D1 remaining in the tray member 32.

[0118] As shown in Fig. 36, the control device 64 has a first swing control section 64f. When dispensing the soil D1, the first swing control section 64f is a program that outputs a first swing command to the swing motor 66 to swing the tray member 32 back and forth multiple times. The first swing command specifies the rotation direction and number of rotations of the swing motor 66, that is, the conditions for how many times the tray member 32 is to swing. In the swing motor 66 that receives the first swing command, the swing motor 66 swings the swing shaft 67 back and forth a predetermined number of times, so that the soil D1 remaining on the tray member 32 can be dropped without being left behind.

[0119] 23, it is preferable that the pan member 32 is wider horizontally outward than the range in which the soil D1 falls from the measuring member 9 by the vibration mechanism 40 in the dispensing mode. Below, the range in which the first container 5 vibrates in the device width direction B is defined as the vibration stroke S (amplitude), and the width W of the pan member 32 in the device width direction B (hereinafter, sometimes simply referred to as the width) will be described.

[0120] 23, when the first container 5 is moving in one vibration direction (left or right), the distance between one hole wall of the first quantification unit 14a or the second quantification unit 14b and the other hole wall of the first quantification unit 14a or the second quantification unit 14b when the first container 5 is moving in the other vibration direction (right or left) corresponds to the range into which the soil D1 falls. For this reason, if the diameter of the larger lower opening of the first quantification unit 14a or the second quantification unit 14b is taken as α, the width W of the pan member 32 should be (S+α) or more.

[0121] Since the dried soil D1 may diffuse as it falls, a predetermined correction value may be set in advance to take into account the diffusion of the soil D1, and the dish member 32 may be designed to have a width W corrected for the above-mentioned (S+α).

[0122] Furthermore, the quantification section 14 (first quantification section 14a and second quantification section 14b) is a hole penetrating in the vertical direction, and the soil D1 that falls from the quantification section 14 is prevented from scattering by the left wall 84L and right wall 84R of the cutout section 5e formed below the quantification section 14. For this reason, when dispensing the soil D1 contained in the first container 5, the pan member 32 may be designed to be wider than the distance between the left wall 84L and the right wall 84R, in order to take into consideration the distance between the left wall 84L and the right wall 84R of the cutout section 5e.

[0123] In such a case, the dish member 32 should be made wider outward in the vibration direction than the range of movement from the position of the wall portion on one side in the vibration direction (either the left wall 84L or the right wall 84R of the cutout portion 5e) when it is moved to one side of the dish member 32 by the vibration mechanism 40 in the dispensing mode to the position of the wall portion on the other side in the vibration direction when it is moved to the other side of the dish member 32. For this reason, if the distance between the left wall 84L and the right wall 84R of the cutout portion 5e is β, the width W of the dish member 32 should be greater than or equal to (S+β).

[0124] In this embodiment, the distance β between the left wall 84L and the right wall 84R of the cutout portion 5e is set to a dimension substantially equal to the opening diameter α of the pipeline 17 in the device width direction B (β≈α).

[0125] The weight detection device 68 is a detection sensor that detects the weight of the soil D1 on the pan member 32. The weight detection device 68 is connected to the control device 64 and outputs the detection result to the control device 64. Furthermore, the pretreatment device 1 of this embodiment is provided with a weight detection device 68 corresponding to each of the multiple first containers 5, and the weight calculation unit 64g can calculate the weight of each soil D1 individually.

[0126] The weight detection device 68 is provided between the dish member 32 and the swing shaft 67. That is, in this embodiment, the weight detection device 68 is a member that supports the dish member 32. The weight detection device 68 is, for example, a strain gauge (load cell) that outputs a strain that changes according to the weight as an electric resistance. The weight detection device 68 outputs the detection result to the control device 64 as an electric signal.

[0127] The calculation device calculates the weight based on the detection result detected by the weight detection device 68. The calculation device has a weight calculation unit 64g of the control device 64. In other words, the control device 64 also serves as the calculation device.

[0128] 36, the control device 64 has a weight calculation unit 64g that calculates the true weight of the soil D1 from the weight of the soil D1 detected by the weight detection device 68. The weight calculation unit 64g calculates the weight of the soil D1 based on the electrical signal output from the weight detection device 68. In other words, the control device 64 can be said to be a measuring device that measures the weight of the soil D1 on the pan member 32 based on the detection result detected by the weight detection device 68.

[0129] The weight calculation unit 64g calculates the weight of the certain volume of soil D1 based on the electrical signal output from the weight detection device 68. The weight calculation unit 64g subtracts the weight value of the pan member 32 previously stored in memory from the weight value measured by the weight detection device 68 to calculate the true weight of the certain volume of soil D1 placed on the pan member 32. This allows the weight of the certain volume of soil D1 removed from the pan member 32 to be calculated by the weight detection device 68 and the weight calculation unit 64g. This has the excellent advantages described below.

[0130] The certain volume of soil D1 removed from the first container 5 may have variations in density and may not have the same weight. If the density is not constant, the weight of the certain volume of soil D1 cannot be obtained, and accurate soil analysis cannot be performed.

[0131] Therefore, in order to perform an accurate soil analysis, it is advisable to accurately grasp the weight (density) of a certain volume of soil D1 that has been treated by the pretreatment device 1.

[0132] Here, when the pretreatment device 1 includes the weight calculation unit 64g as in this embodiment, it is possible to calculate the weight of each of the fixed volumes of soil D1 taken out from the first containers 5. Therefore, it is possible to obtain a more accurate analysis result by reflecting the weight of soil D1 calculated by the weight calculation unit 64g in the analysis result by the analysis device.

[0133] As described above, the weight calculation unit 64g can individually measure the weight of a certain volume of soil D1 taken out from a plurality of first containers 5. Therefore, it is possible to efficiently, quickly and accurately calculate the true weight of the soil D1 from the individually measured weights of the soil D1.

[0134] In addition, when new soil D1 is dispensed into the tray member 32 so that the weight calculation unit 64g can more accurately calculate the true weight of the soil D1, the drive device 65 may preliminary perform a first operation to tilt the tray member 32 toward the second container 80.

[0135] Furthermore, as a second operation following the first operation, the drive device 65 may swing the swing shaft 67 in the opposite direction to the first operation to tilt the dish member 32. At this time, the drive device 65 tilts the dish member 32 so that the rear part of the dish member 32 is lowered lower than the front part. If the dish member 32 receives the soil D1 that has fallen from the quantification unit 14 while the drive device 65 is performing the second operation, the dish member 32 can receive all of the soil D1 without spilling it.

[0136] The weight calculation unit 74 performs calibration (tare calibration) after the driving device 65 performs the first operation. Specifically, the weight calculation unit 74 performs calibration by updating the weight value of the pan member 32 stored in the memory based on the weight value measured by the weight detection device 68 after the first operation and before the second operation of the driving device 65. The timing of the weight calculation unit 74 to perform calibration may be at least after the first operation, and is not limited to before the second operation, but may be performed before the next soil D1 falls onto the pan member 32. The weight calculation unit 74 may perform calibration every time the driving device 65 performs the first operation (in other words, every time the weight detection device 68 detects the weight of the soil D1), or may perform calibration according to the number of times the first operation is performed (in other words, the number of times the weight detection device 68 detects the weight of the soil D1).

[0137] In this embodiment, as shown in FIG. 36, the control device 64 has a second swing control unit 64h. When new soil D1 is dispensed to the dish member 32, the second swing control unit 64h is a program that outputs a second swing command to the swing motor 66, which causes the drive device 65 to perform the first and second operations. The second swing command specifies the rotation direction and number of rotations of the swing motor 66, that is, the condition of how much the dish member 32 is tilted. Upon receiving the second swing command, the swing motor 66 rotates the swing shaft 67 a predetermined number of times, tilts the dish member 32 forward, and drops all of the soil D1 remaining on the dish member 32 (first operation). Then, the swing motor 66 rotates the swing shaft 67 in the opposite direction a predetermined number of times, and tilts the dish member 32 backward so that the rear part of the dish member 32 is lowered lower than the front part.

[0138] In addition to or instead of lowering the posture of the dish member 32 rearward by the second action, the weight calculation device 71 may employ a dish member 32 having a prevention wall formed at the rear. The prevention wall is a wall portion extending upward from the rear of the dish member 32, and prevents the soil D1 from falling from the rear of the dish member 32. Even if such a prevention wall is provided, it is possible for the dish member 32 to receive all of the soil D1 without spilling it. <Extraction device> Next, the extraction device 4 will be described. The extraction device 4 is a device that supplies an extracting liquid for extracting components contained in the soil D1 from which foreign matter has been removed by the sieving device 3 in the process of (P8). In this embodiment, the extraction device 4 also supplies purified water to the soil D1 from which foreign matter has been removed by the sieving device 3 in the process of (P9). <Second container> The extraction device 4 has a second container 80. As shown in FIG. 21 etc., the extraction device 4 of this embodiment has a plurality of second containers 80, and the number of the second containers 80 corresponds to the number of the first containers 5. The plurality of second containers 80 respectively accommodate the soil D1 from the plurality of metering units 14. In this embodiment, the plurality of second containers 80 respectively accommodate the soil D1 from the plurality of first containers 5 via the pan member 32.

[0139] 25, the second container 80 has a plurality of preparation containers 54, 55 that respectively accommodate the soil D1 from the plurality of quantification units 14 (first quantification unit 14a, second quantification unit 14b). The plurality of preparation containers 54, 55 are containers for performing different analyses on the soil D1 from the plurality of quantification units 14. In this embodiment, the second container 80 has a pair of preparation containers 54, 55 as the plurality of preparation containers 54, 55, including a first preparation container 54 to which an extract for analyzing the soil D1 from the first quantification unit 14a is supplied, and a second preparation container 55 to which purified water for analyzing the soil D1 from the second quantification unit 14b is supplied. <First preparation container> First, the first preparation container 54 will be described. The first preparation container 54 is an extraction container that contains the soil D1 from which foreign matter has been removed by the sieving device 3, and an extraction liquid that extracts the analyte components from the soil D1 (hereinafter, the first preparation container 54 may be simply referred to as the extraction container). The first preparation container 54 also has an opening 80e for taking in the soil D1 and the extraction liquid that extracts the analyte components from the soil D1.

[0140] 26, the first preparation vessel 54 has a substantially disk-shaped bottom wall 80a and a side wall 80b that rises upward from the periphery of the bottom wall 80a and forms an opening 80e. The bottom wall 80a of the first preparation vessel 54 is formed with a liquid outlet hole 80f for extracting the passing liquid, which is the extract that has passed through the soil D1. The first preparation vessel 54 is provided with a cylindrical portion 80g that rises from the bottom wall 80a around the liquid outlet hole 80f.

[0141] The liquid outlet hole 80f is formed in the center of the bottom wall 80a. In this embodiment, the liquid outlet hole 80f is a circular hole. The tubular portion 80g is formed in a cylindrical shape. The center of the liquid outlet hole 80f and the center (axis) of the tubular portion 80g are aligned. The inner diameter of the tubular portion 80g is larger than the diameter of the liquid outlet hole (circular hole) 80f. The height of the tubular portion 80g is lower than the height of the side wall 80b.

[0142] The first preparation container 54 has a downward protruding portion 80h that protrudes downward from the bottom portion 80c. The downward protruding portion 80h protrudes downward from the center of the bottom portion 80c. The liquid outlet hole 80f is formed penetrating the downward protruding portion 80h. The outer diameter of the downward protruding portion 80h becomes smaller as it goes downward.

[0143] A liquid guide member 81 can be attached to the downward protruding portion 80h. The liquid guide member 81 has a cylindrical portion 81a and a flange portion 81b. The cylindrical portion 81a has a liquid guide hole 81c. The flange portion 81b is provided at a midpoint in the up-down direction C of the cylindrical portion 81a. An upper portion of the cylindrical portion 81a can be fitted onto the downward protruding portion 80h. With the cylindrical portion 81a fitted onto the downward protruding portion 80h, the liquid outlet hole 80f and the liquid guide hole 81c communicate with each other. <Cover> 24, the extraction device 4 has a cover 82. The cover 82 covers an opening 80e of the first preparation container 54. Specifically, the cover 82 abuts against an upper end of the opening 80e of the first preparation container 54, thereby closing the opening 80e.

[0144] As shown in Figures 26, 27, etc., the lid 82 has a top wall 82a formed in a flat, thick disk shape, and a peripheral wall 82b hanging downward from the outer edge of the top wall 82a. A lid support member 82f for connecting the lid 82 to the lifting device 29 is attached to the center of the top wall 82a. A first seal 103 is disposed on the underside of the peripheral wall 82b. A second seal 104 is disposed at the inner corner where the top wall 82a and the peripheral wall 82b intersect.

[0145] The first seal 103 is disposed between the first preparation container 54 and the lid 82, and seals the gap between the first preparation container 54 and the lid 82 by applying pressure, thereby closing the opening 80e.

[0146] As shown in Figs. 26 and 27, the first seal 103 is a circular plate-like member (lip seal) made of an elastic material such as rubber. The first seal 103 is attached to the lower surface of the peripheral wall 82b. When the lid 82 is attached to the first preparation container 54, the first seal 103 extends in an endless circular shape along the gap between the first preparation container 54 and the lid 82. The first seal 103 protrudes further inward (diametrically inward) than the peripheral wall 82b, and the part protruding inward is aligned with the outer circumferential surface of the first preparation container 54 to provide a seal.

[0147] 26, when the cover 82 is attached to the first preparation vessel 54 and the opening 80e of the first preparation vessel 54 is closed with the cover 82, the upper end of the side wall 80b of the first preparation vessel 54 is located below the top wall 82a of the cover 82. In addition, the upper side wall 80b of the first preparation vessel 54 is located inside the peripheral wall 82b of the cover 82.

[0148] The first seal 103 extends from either the side wall 80b of the first preparation container 54 or the peripheral wall 82b of the lid 82 to the other, and deforms so as to curve along the other as it approaches the other. In the case shown in FIG. 26, the peripheral wall 82b of the lid 82 covers the outer periphery of the side wall 80b of the first preparation container 54 as shown in FIG. 28. The first seal 103 curves upward toward the top wall 82a of the lid 82 as it approaches the other, in other words, as it approaches the side wall 80b of the first preparation container 54 on the inner periphery side from the outside. At this time, the tip (upper end) of the first seal 103 comes into contact with the outer periphery of the side wall 80b of the first preparation container 54 in a flat state while deforming so as to follow the outer periphery of the side wall 80b of the first preparation container 54. In other words, the first seal 103 extends from the inner surface of the peripheral wall 82b of the lid body 82 to the outer peripheral surface of the side wall 80b of the first preparation container 54, and as it approaches the outer peripheral surface of the side wall 80b of the first preparation container 54, it curves upward along the outer peripheral surface toward the top wall 82a.

[0149] In this way, if the tip (upper end) of the first seal 103 is in surface contact with the outer periphery of the side wall 80b of the first preparation container 54, the sealing property of the first seal 103 can be improved. In particular, if the contents leak from inside the first preparation container 54 to the outside, the contents are likely to move downward between the peripheral wall 82b of the lid 82 and the side wall 80b of the first preparation container 54. However, if the tip (upper end) of the first seal 103 is deformed so as to follow the outer periphery of the side wall 80b of the first preparation container 54 and to curve upward, the first seal 103 is deformed in a direction opposite to the moving direction of the contents (soil D1), and the effect of inhibiting the movement of the contents is enhanced.

[0150] 26 and other figures is provided on the lower surface of the peripheral wall 82b of the lid 82, but may be provided on the upper surface of the side wall 80b of the first preparation container 54. In this case, the first seal 103 extends from the outer circumferential surface of the side wall 80b to the inner circumferential surface of the peripheral wall 82b, and curves toward the bottom 80c along the inner circumferential surface as it approaches the inner circumferential surface of the peripheral wall 82b.

[0151] 28 illustrates a cover 82 in which the upper end of the side wall 80b of the first preparation container 54 is located below the top wall 82a of the cover 82 when the cover 82 is attached to the first preparation container 54, but the cover 82 is not limited to this. For example, as shown in FIG. 29, a cover 82 in which the upper side wall 80b of the first preparation container 54 is located outside the peripheral wall 82b may be used.

[0152] In the modification shown in Fig. 29, the first seal 103 extends from either the side wall 80b or the peripheral wall 82b to the other, and deforms so as to curve along the other as it approaches the other. However, unlike the cover body 82 shown in Fig. 26 etc., the peripheral wall 82b covers the inner circumference of the side wall 80b of the first preparation container 54. Also, the first seal 103 curves upward toward the top wall 82a of the cover body 82 as it approaches the other, in other words, as it approaches the side wall 80b of the first preparation container 54 on the outer periphery side from the inside. At this time, the tip (upper end) of the first seal 103 comes into contact with the inner periphery of the side wall 80b of the cover body 82 in a flat state while deforming so as to follow the inner periphery of the side wall 80b. In other words, the first seal 103 extends from the inner surface of the peripheral wall 82b of the lid body 82 to the outer surface of the side wall 80b of the first preparation container 54, and as it approaches the inner surface of the side wall 80b of the first preparation container 54, it curves upward along the inner surface toward the top wall 82a.

[0153] In this way, as in the modified example shown in Figure 29, even when the tip (upper end) of the first seal 103 is in surface contact with the inner circumference of the side wall 80b of the first preparation container 54, the sealing ability of the first seal 103 can be improved.

[0154] 26 and the like, a plate-like member has been used as the first seal 103, but as shown in Fig. 30, an O-ring 103A may be used instead of the first seal 103. By using an O-ring 103A instead of the first seal 103, attachment to the lid 82 is simplified, improving convenience.

[0155] 26 and other figures, the cover 82 has a second seal 104. The second seal 104 is attached to the top wall 82a and the peripheral wall 82b, and more specifically, is disposed at an inner corner where the top wall 82a and the peripheral wall 82b intersect.

[0156] 26, when the inside of the first preparation vessel 54 is depressurized with the lid body 82 attached to the opening 80e of the first preparation vessel 54, the second seal 104 is disposed between the first preparation vessel 54 and the lid body 82. When the inside of the first preparation vessel 54 is depressurized, the second seal 104 seals the gap between the first preparation vessel 54 and the lid body 82, and closes the opening 80e.

[0157] Specifically, the second seal 104 is sandwiched between the upper end surface of the side wall 80b and the lower surface of the top wall 82a in a state in which the lid 82 is attached to the first preparation vessel 54. The second seal 104 is formed of an elastic body (e.g., a sponge) that elastically deforms when sandwiched between the upper end surface of the side wall 80b of the first preparation vessel 54 and the lower surface of the top wall 82a of the lid 82. Similarly to the first seal 103, the second seal 104 also preferably extends in an endless annular shape along the gap between the first preparation vessel 54 and the lid 82.

[0158] Thus, by providing the second seal 104 that elastically deforms when the first preparation vessel 54 is depressurized and seals between the upper end surface of the peripheral wall 82b of the first preparation vessel 54 and the lower surface of the top wall 82a of the lid body 82, the airtightness of the lid body 82 can be maintained not only when the inside of the second vessel 80 is pressurized but also when the inside of the second vessel 80 is depressurized. This makes it possible to efficiently perform operations such as degassing the soil D1 supplied to the second vessel 80. <Lifting device> As shown in FIG. 24 and other figures, the extraction device 4 has a lifting device 29. The lifting device 29 is a device that moves the lid body 82 between a lowered position and an elevated position. When the lid body 82 is in the lowered position, the lid body 82 abuts against the opening 80e of the first preparation container 54 to close the opening 80e of the first preparation container 54. When the lid body 82 is in the elevated position, the lid body 82 moves upward away from the opening 80e of the first preparation container 54. In other words, the lifting device 29 raises and lowers the lid body 82, whereby the lid body 82 is attached to and detached from the first preparation container 54.

[0159] The lifting device 29 is attached to a support frame 39. The lifting device 29 has a lifting motor 48, a lifting shaft 48a driven by the lifting motor 48, a first lifting guide portion 45L, a second lifting guide portion 45R, and a lifting body 49 supported by the first lifting guide portion 45L and the second lifting guide portion 45R.

[0160] The lift motor 48 is controlled by the control device 64 and generates power to drive the lift shaft 48a. The control device 64 has a first lift control section 64i, which is a program that outputs a first lift command to the lift motor 48. The first lift command includes conditions such as the rotation speed and rotation direction of the lift motor 48, i.e., conditions for lifting and lowering the lid 82. The lift motor 48 is driven based on the first lift command to lift or lower the lid 82.

[0161] The lift shaft 48a is a shaft member extending in the up-down direction C. A screw groove is formed on the outer circumferential surface of the lift shaft 48a and extends spirally around the axis.

[0162] The first lifting / lowering guide portion 45L is a long member extending vertically along the up-down direction C. The first lifting / lowering guide portion 45L is attached to the left portion of the support frame 39. In addition, the first lifting / lowering guide portion 45L supports the left portion of the lifting / lowering body 49, and guides (guides) the movement of the lifting / lowering body 49 in the up-down direction C together with the second lifting / lowering guide portion 45R.

[0163] The second lifting / lowering guide portion 45R is a long member extending vertically along the up-down direction C. The second lifting / lowering guide portion 45R is attached to the right portion of the support frame 39. The second lifting / lowering guide portion 45R supports the right portion of the lifting / lowering body 49, and guides (guides) the movement of the lifting / lowering body 49 in the up-down direction C together with the first lifting / lowering guide portion 45L.

[0164] The lifting body 49 is a member that supports the cover 82. A left portion of the lifting body 49 is attached to the first lifting guide portion 45L so as to be movable (slidable) in the vertical direction C. Meanwhile, a right portion of the lifting body 49 is attached to the second lifting guide portion 45R so as to be movable (slidable) in the vertical direction C. Specifically, a pair of insertion holes are formed in the lifting body 49 so as to be spaced apart from each other in the device width direction B, and the first lifting guide portion 45L and the second lifting guide portion 45R are inserted into the pair of insertion holes, respectively.

[0165] Further, a screw portion 49a that screws into the lift shaft 48a is provided on the left portion of the lift body 49. That is, when the lift shaft 48a is rotationally driven by the lift motor 48, the screw portion 49a is moved in either the up or down direction by the rotation of the lift shaft 48a. At this time, as the screw portion 49a is moved up or down, the lift body 49 is guided in the up and down direction C by the first lift guide portion 45L and the second lift guide portion 45R, and is moved up and down while maintaining a horizontal posture.

[0166] The lifting body 49 has a first standing plate 49b extending in the device width direction B and standing in the up-down direction C, and a second standing plate 49c arranged parallel to the first standing plate 49b behind the first standing plate 49b. The above-mentioned lid support member 82f is fixed in a sandwiched state between the first standing plate 49b and the second standing plate 49c. In the case of this embodiment, five lid support members 82f are fixed in a sandwiched state between the first standing plate 49b and the second standing plate 49c, and the five lid bodies 82 supported by the lid support members 82f move in the up-down direction C together with the lid support members 82f in accordance with the rise and fall of the lifting body 49.

[0167] As shown in FIG. 24, the extraction device 4 has a liquid injecting section 75 and a pressurizing section .

[0168] The liquid injection part 75 is provided on the lid 82 and supplies the extract into the first preparation container 54. The liquid injection part 75 has a liquid injection hole 82c penetrating the lid 82 and a liquid injection joint 82d connected to the liquid injection hole 82c. One end of a tube 82e is connected to the liquid injection joint 82d. The other end of the tube 82e is connected to a liquid supply device. The liquid supply device has a tank for storing the extract, and supplies the extract from the tank to the liquid injection part 75 via the tube 82e.

[0169] The extraction liquid is changed appropriately depending on the elements or chemical substances to be analyzed, but for example, an aqueous solution in which a reagent such as ammonium acetate is dissolved or an aqueous solution in which hydrochloric acid is dissolved is used.

[0170] The pressurizing unit 76 is provided on the lid 82 and supplies air into the first preparation container 54. The pressurizing unit 76 has an air supply / discharge hole 82g penetrating the lid 82 and an air injection joint 82h connected to the air supply / discharge hole 82g. One end of an air injection tube 82i is connected to the air injection joint 82h. The other end of the air injection tube 82i is connected to the air pressure adjustment device CP.

[0171] The supply and discharge hole 82g, the joint 82h, and the air injection tube 82i are used not only when pressurizing the inside of the first preparation container 54, but also when depressurizing the inside of the first preparation container 54. In other words, the member denoted by reference symbol 82b functions not only as the pressurizing unit 76, but also as the depressurizing unit 77.

[0172] The air pressure regulator CP is a device that supplies air to the pressurizing unit 76 through the tube 82i, and is, for example, an air cylinder or an air compressor. The air pressure regulator CP is controlled by the control device 64. The control device 64 has an air pressure control unit 64j, which is a program that outputs a pressurizing command and / or a depressurizing command to the air pressure regulator CP. The pressurizing command includes conditions such as the time for injecting air into the first preparation container 54 through the tube 82i. The depressurizing command includes conditions such as the time for discharging air from the first preparation container 54 through the tube 82i. The air pressure regulator CP pressurizes or depressurizes the inside of the first preparation container 54 sealed by the lid 82 based on the pressurizing command or the depressurizing command.

[0173] Air supplied from the air pressure regulator CP through a tube 82i is injected into the first preparation container 54 from an inlet / outlet hole 82g via a joint 82h. The air injected into the first preparation container 54 increases the pressure inside the second container 80, causing the extract to permeate the soil D1 and pass through the soil D1, and the passing liquid, which is the extract that has passed through the soil D1, is pushed out from the liquid outlet hole 80f.

[0174] 31, the passing liquid pushed out from the liquid outlet hole 80f is collected by a collecting mechanism 98 arranged below the first preparation container 54. The collecting mechanism 98 has an inner bottom 51, a guide part 99 that guides the passing liquid that has permeated the inner bottom 51 to the center, and a collecting part 100 that collects the passing liquid guided to the center by the guide part 99.

[0175] In the inner bottom 51, transmission holes 51a that allow the passing liquid to pass through are formed below the liquid outlet holes 80f. The transmission holes 51a are circular holes in a plan view, and are disposed at positions corresponding to the liquid outlet holes 80f, in other words, the first container 5. For this reason, the transmission holes 51a are disposed on a straight line at equal intervals in the device width direction B in the inner bottom 51.

[0176] The guide section 99 is a section that guides the passing liquid. The guide section 99 has a smoothly formed plate member 99a and a plurality of guide grooves 99b that are formed in the plate member 99a and guide the passing liquid to the center. The guide grooves 99b are recesses that are recessed downward from the upper surface of the plate member 99a. The guide grooves 99b include a first portion 99b1 that is one end portion and is located below the liquid outlet hole 80f (transmission hole 51a), and a second portion 99b2 that is the other end portion and is located at the center of the plate member 99a in the device width direction B. The second portion 99b2 has a through hole that penetrates in the up-down direction C.

[0177] The guide groove 99b extends from the first portion 99b1 toward the second portion 99b2 toward the center in the device width direction B. The guide groove 99b is formed so that the second portion 99b2 is deeper than the first portion 99b1, and a gradient is formed such that the groove bottom becomes deeper as it approaches the second portion 99b2 from the first portion 99b1. Therefore, the passing liquid that falls into the first portion 99b1 flows down toward the second portion 99b2 and falls from the through hole of the second portion 99b2.

[0178] The collection unit 100 is a tray for collecting the passing liquid. The collection unit 100 is detachably attached to the extraction device 4. In this embodiment, the collection unit 100 is a disk-shaped member that is smaller than the induction unit 99. The collection unit 100 has a plurality of liquid reservoirs 100a arranged in an arc shape.

[0179] The liquid reservoir 100a is a recess formed below the second portion 99b2 of the guide portion 99. Therefore, the liquid reservoir 100a collects the passing liquid that flows along the guide groove 99b and drops from the through-hole of the second portion 99b2. The collection portion 100 may also be formed with a knob portion 100b that a user can grip when removing the collection portion 100. By the operator gripping the knob portion 100b, it becomes easy to remove the collection portion 100 from the pretreatment device 1, and soil analysis can be performed quickly. <Second preparation container> Next, the second preparation container 55 will be described.

[0180] As shown in Fig. 25, the second preparation vessels 55 are disposed at a distance behind the first preparation vessels 54. While the first preparation vessel 54 applies the extracting liquid in a sealed environment, the second preparation vessel 55 adds and mixes purified water. The second preparation vessel 55 is a bottomed cylindrical member with a smaller inner diameter than the first preparation vessel 54, and is used in an open-to-air state without a lid. The second preparation vessel 55 opens upward, allowing soil D1 and purified water to be supplied from above.

[0181] 25, the extraction device 4 has a support device 85 that supports a plurality of different types of preparation containers 54, 55 (in this embodiment, two containers, the first preparation container 54 and the second preparation container 55). The support device 85 has a first support member 86 that supports the plurality of first preparation containers 54 and a second support member 87 that supports the plurality of second preparation containers 55.

[0182] The first support member 86 is formed of, for example, a plate member bent into a substantially L-shape when viewed from the side. The first support member 86 is provided with a container holding portion 88 that holds the first preparation container 54.

[0183] The first support member 86 is provided with the container holding parts 88, the number of which corresponds to the number of the first preparation containers 54. The container holding parts 88 are arranged side by side in the width direction B of the device. In the present embodiment, five container holding parts 88 are provided on the first support member 86, and the first support member 86 can hold five first preparation containers 54. The first support member 86 has a cylindrical shape and holds the first preparation containers 54 so as to embrace them inside. The shape of the first support member 86 is not limited to a cylindrical shape as long as it is capable of holding the first preparation containers 54.

[0184] The second support member 87 is formed of, for example, a plate member bent into a substantially U-shape in side view. The second support member 87 is formed with a support portion 89 into which the second preparation container 55 is inserted and supported. In this embodiment, the support portion 89 is a substantially circular cutout in plan view, into which the second preparation container 55 is inserted and fixed. Note that the support portion 89 is not limited to a cutout, and may be a circular through-hole as long as it can support the second preparation container 55 by inserting it therein.

[0185] The second support member 87 is formed with a number of support portions 89 corresponding to the number of second preparation containers 55. The support portions 89 are arranged side by side in the device width direction B. The support portions 89 are formed behind the container holding portion 88. In addition, in the second support member 87, a through hole 90 penetrating in the up-down direction C is formed between the support portions 89 adjacent to each other in the device width direction B.

[0186] 32A and 32B, the support device 85 has a connecting member 91 that connects the first support member 86 and the second support member 87. The connecting member 91 in this embodiment includes a left connecting member 91L that connects a left portion of the first support member 86 to a left portion of the second support member 87, and a right connecting member 91R that connects a right portion of the first support member 86 to a right portion of the second support member 87. The first support member 86 and the second support member 87 are connected in the front-rear direction by the left connecting member 91L and the right connecting member 91R, and can move as a unit.

[0187] 25 and other drawings, the support device 85 has a base 50 that supports the first support member 86 and the second support member 87 so as to be movable in two directions, that is, the device width direction B and the front-rear direction A. The base 50 is disposed below the first support member 86 and the second support member 87.

[0188] Specifically, the base 50 has an inner bottom 51, a first guide rail 105, and a second guide rail 106. The inner bottom 51 is a member attached to the lower part of the support frame 39. The first guide rail 105 and the second guide rail 106 are long members arranged along the device width direction B. The first guide rail 105 and the second guide rail 106 are arranged to be spaced apart in the front-rear direction. In this embodiment, the second guide rail 106 is attached to the inner bottom 51 behind the first guide rail 105 at the same height as the first guide rail 105.

[0189] The base 50 has guide members 107 movably (slidably) provided on both the first guide rail 105 and the second guide rail 106. The guide member 107 is a member that supports the first support member 86 and the second support member 87. In the present embodiment, the guide member 107 is attached to the bottom of the first support member 86, and also supports the second support member 87 via a connecting member 91. The guide member 107 has a left guide member 107L that supports the left portion of the first support member 86, and a right guide member 107R that is provided on the right portion of the second support member 87.

[0190] A left slider 108 is provided on the left guide member 107L so as to be movable (slidable) in the front-rear direction. On the other hand, a right slider 109 is provided on the right guide member 107R so as to be movable (slidable) in the front-rear direction. The left slider 108 and the right slider 109 are attached to the bottom of the first support member 86.

[0191] According to the above-described base 50, the first support member 86 can be supported movably (slidably) in two directions, that is, the width direction B of the device and the front-rear direction A, relative to the inner bottom portion 51 (support frame 39).

[0192] In this embodiment, the base 50 is made up of a rail member or a slider, but the base 50 of the present invention may be made up of a roller conveyor or the like. <Second movement mechanism> The extraction device 4 has a second moving mechanism 53. The second moving mechanism 53 is a mechanism that moves the first support member 86 and / or the second support member 87. In this embodiment, the second moving mechanism 53 can move both the first support member 86 and the second support member 87. Furthermore, the second moving mechanism 53 can be switched between a switching mode and a stirring mode. The switching mode is a mode in which the first support member 86 and the second support member 87 are moved when the soil D1 from the quantification unit 14 is supplied to the second container 80. The stirring mode is a mode in which the first support member 86 and the second support member 87 are moved when the soil D1 contained in the second container 80 is stirred in the process of (P10).

[0193] In the switching mode, the second moving mechanism 53 switches one of the plurality of first preparation containers 54 and the plurality of second preparation containers 55 to a supply position Pf for supplying the soil D1 from the quantification unit 14. In addition, the second moving mechanism 53 switches the one of them to the supply position Pf, and switches the other one to a retracted position Pe away from the supply position Pf.

[0194] That is, when the second moving mechanism 53 moves the second preparation vessel 55 to the supply position Pf, the first preparation vessel 54 is moved to the retreat position Pe away from the supply position Pf. Also, when the second moving mechanism 53 moves the first preparation vessel 54 to the supply position Pf, the second preparation vessel 55 is moved to the retreat position Pe away from the supply position Pf.

[0195] The retracted position Pe of the second preparation container 55 when the first preparation container 54 is located at the supply position Pf is different from the retracted position Pe of the first preparation container 54 when the second preparation container 55 is located at the supply position Pf.

[0196] In addition, the second moving mechanism 53 may be one that moves the first preparation container 54 and the second preparation container 55, or one that moves a plurality of first preparation containers 54 and a plurality of second preparation containers 55.

[0197] In this way, in the switching mode, the second moving mechanism 53 moves the first support member 86 so that either one of the multiple first preparation containers 54 or the multiple second preparation containers 55 is always located at the supply position Pf, or alternately located at the supply position Pf. Also, the second moving mechanism 53 switches the positions of the first support member 86 and the second support member 87 in the front-rear direction along a circular arc-shaped trajectory in a plan view.

[0198] Furthermore, the second moving mechanism 53 rotates the first support member 86 and the second support member 87 in the stirring mode.

[0199] Specifically, the second moving mechanism 53 has a second drive motor 92 provided on the right side of the support frame 39, a disk-shaped second cam 93 rotated by the second drive motor 92, and a connecting protrusion 94 provided at a position away from the rotation center of the second cam 93. The second drive motor 92 is controlled by the control device 64 to generate a driving force for driving the second cam 93. The control device 64 has a second movement control unit 64k for controlling the second moving mechanism 53 in the switching mode, and the second movement control unit 64k is a program that outputs a driving command to the second drive motor 92. The driving command includes conditions such as the number of rotations and the rotation time of the second drive motor 92. The second drive motor 92 switches the position between the first support member 86 and the second support member 87 by operating the second moving mechanism 53 based on the driving command.

[0200] The control device 64 also has an agitation control unit 64l for controlling the second movement mechanism 53 in the agitation mode, and the agitation control unit 64l is a program that outputs an agitation command to the second drive motor 92. The agitation command includes conditions such as the number of rotations and rotation time of the second drive motor 92, similar to the drive command from the second movement control unit 64k described above. The second drive motor 92 operates the second movement mechanism 53 based on the agitation command to agitate the first preparation container 54 and the second preparation container 55.

[0201] The second drive motor 92 is attached to the right part of the support frame 39. A drive shaft 92a of the second drive motor 92 protrudes downward, and a second cam 93 is provided on the drive shaft 92a. Therefore, the second cam 93 rotates around an axis facing in the up-down direction C by the driving force generated by the second drive motor 92.

[0202] The connecting protrusion 94 is disposed at a position away from the rotation axis on the upper surface of the second cam 93. Therefore, when the second cam 93 rotates about the axis in the up-down direction C, the connecting protrusion 94 rotates along an orbit that goes around the axis of the second cam 93. The first support member 86 is connected to the connecting protrusion 94 so as to be rotatable around the axis facing the up-down direction C.

[0203] In other words, as the second cam 93 rotates, the connecting protrusion 94 rotates along an orbit around the axis of the second cam 93, and the first support member 86 connected via the connecting protrusion 94 also moves horizontally along a circular orbit.

[0204] For example, Fig. 32A shows the second moving mechanism 53 in which the center PO1 of the multiple first preparation containers 54 overlaps with the supply position Pf. In Fig. 32A, the center PO2 of the multiple second preparation containers 55 is located in front of the center PO1 of the multiple first preparation containers 54. The center PO2 of the multiple second preparation containers 55 is at the retracted position Pe relative to the supply position Pf.

[0205] As shown in FIG. 32A, when changing from a state in which the center PO1 of the first preparation containers 54 is at the supply position Pf to a state in which the second preparation containers 55 are at the supply position Pf, the control device 64 drives the second drive motor 92 to rotate the connecting protrusion 94 along a revolution orbit (shown by a dotted line in the figure) around the axis of the second cam 93. In the state shown in FIG. 32A, the connecting protrusion 94 is located in front of the axis of the second cam 93. Also, the position of the center PO1 of the first preparation container 54 supported by the first support member 86 is located in front of the revolution orbit as shown by a black dot in the figure. When the second cam 93 is rotated, the first support member 86 moves horizontally in the direction of the arrow R1 while being supported by the base 50.

[0206] As shown in Fig. 32B, when the control device 64 further drives the second drive motor 92 to further rotate the connecting protrusion 94 around the axis of the second cam 93, the connecting protrusion 94 changes position to the right of the axis of the second cam 93. Also, the black dot indicating the center PO1 of the position of the first preparation container 54 changes position to the right of the orbit. At this time, the black corner point indicating the center PO2 of the position of the second preparation container 55 changes position to a position forward of the black dot indicating the center PO1 of the position of the first preparation container 54. Also, the supply position Pf does not move, and remains at the front of the orbit.

[0207] As shown in FIG. 32C, when the control device 64 further drives the second drive motor 92 to further rotate the connecting protrusion 94 around the axis of the second cam 93, the connecting protrusion 94 changes its position to the rear of the axis of the second cam 93. Also, the black dot indicating the position of the center PO1 of the first preparation container 54 changes its position to the rear of the orbit. At this time, when the distance between the center PO1 of the first preparation container 54 and the center PO2 of the second preparation container 55 is N, if the device is configured so that the diameter of the orbit is N, the center PO2 of the second preparation containers 55 overlaps with the supply position Pf, and the center PO1 of the first preparation containers 54 becomes the retracted position Pe. Then, it becomes possible to change the second moving mechanism 53 to a state in which the first preparation containers 54 are at the supply position Pf and the second preparation containers 55 are at the retracted position Pe.

[0208] When it is desired to return the second moving mechanism 53 with the first preparation containers 54 at the supply position Pf and the second preparation containers 55 at the retracted position Pe, the second driving motor 92 should be driven again.

[0209] As shown in Fig. 32D, when the control device 64 further drives the second drive motor 92 to further rotate the connecting protrusion 94 around the axis of the second cam 93, the connecting protrusion 94 changes position to the left of the axis of the second cam 93, and the black dot indicating the position of the center PO1 of the first preparation container 54 changes position to the left of the orbit. When the second drive motor 92 is further driven, the positions of the connecting protrusion 94 and the black dot return to the positions shown in Fig. 32A, and the second moving mechanism 53 returns to a state in which the multiple first preparation containers 54 are at the supply position Pf and the multiple second preparation containers 55 are at the retracted position Pe.

[0210] In addition, in the switching mode and the stirring mode, the second movement control unit 64k may control the second drive motor 92 to switch the positions of the first support member 86 and the second support member 87 by rotating them in one direction (e.g., clockwise in a planar view) along an arc-shaped trajectory to transition between Figures 32A to 32D, or may switch the positions of the first support member 86 and the second support member 87 by swinging them from one direction (e.g., clockwise in a planar view) to multiple directions (e.g., counterclockwise in a planar view) along an arc-shaped trajectory to transition from Figure 32A to Figure 32C, via one of Figures 32B and 32D, and then from Figure 32C to Figure 32A, via one of Figures 32B and 32D.

[0211] According to the second moving mechanism 53 as described above, the control device 64 can easily move either one of the plurality of first preparation containers 54 or the plurality of second preparation containers 55 to the supply position Pf and the other to the retracted position Pe by simply rotating the second drive motor 92. Furthermore, according to such a second moving mechanism 53, when the control device 64 continuously rotates the second drive motor 92, the plurality of first preparation containers 54 and the plurality of second preparation containers 55 can be agitated in a rotating manner, and good agitation can be performed in the second container 80.

[0212] In this embodiment, the second movement mechanism 53 includes the second drive motor 92, the second cam 93, and the connecting protrusion 94. However, the second movement mechanism 53 of the present invention may include a slide rail or the like.

[0213] The soil D1, the weight of which has been calculated, is supplied from the dish member 32 to the second preparation container 55 that has been moved to the supply position Pf by the above-mentioned second moving mechanism 53. Purified water is further supplied to the second preparation container 55 to which the soil D1 has been supplied. Purified water can be supplied to the second preparation container 55 from a purified water nozzle provided at the rear of the lifting unit 113. The purified water nozzle is connected to a water supply tube, which is connected to a purified water tank. The second preparation container 55 to which the purified water has been supplied is continuously rotated or swung by the second moving mechanism 53, and the soil D1 inside is stirred. The soil D1 in the second preparation container 55 thus stirred is subjected to measurement of pH and EC using a measuring device 56. <Measurement equipment> Next, the measuring device 56 will be described. In the process of (P12), the measuring device 56 measures the pH and / or electrical conductivity of the soil D1 in the second preparation container 55. The measuring device 56 is connected to the control device 64, and outputs the measurement result or a signal for calculating the measurement result to the control device 64. The measuring device 56 has a first electrode 110 for measuring the pH of the soil D1, a second electrode 111 for measuring the electrical conductivity of the soil D1, and a third moving mechanism 112 for moving the first electrode 110 and the second electrode 111 into the second preparation container.

[0214] The first electrode 110 has a pH meter that measures the pH of an aqueous solution of soil D1. The aqueous solution of soil D1 refers to an aqueous solution (supernatant) obtained by supplying soil D1 and purified water into the second preparation container 55 and then stirring the mixture. The first electrode 110 is installed so that the electrode surface faces downward, and a cable is provided on the upper part. This cable outputs data on the pH measurement value measured by the pH meter to the control device 64. Note that this cable includes not only a signal cable that transmits the measurement data, but also a power cable for supplying power to operate the pH meter.

[0215] The second electrode 111 has an EC meter that measures the electric conductivity (hereinafter may be abbreviated as EC) of the aqueous solution of the soil D1. The first electrode 110 is installed with its electrode surface facing downward, and a cable is provided on the upper part. This cable outputs the EC measurement value data measured by the EC meter to the control device 64. Note that this cable includes not only a signal cable for outputting the measurement value data, but also a power cable for supplying power to operate the EC meter.

[0216] As shown in FIG. 21 etc., the first electrode 110 and the second electrode 111 are attached to a lifting unit 113 so as to be movable up and down in the vertical direction C.

[0217] The lifting unit 113 has a base 113a, a first shaft 113b, a second shaft 113c, an upper connector 113d, an actuator 113e, and an electrode attachment portion 113f. The base 113a is provided on the surface of the inner bottom 51. The first shaft 113b extends upward from the base 113a. The second shaft 113c extends upward from the base 113a behind the first shaft 113b. The upper connector 113d connects the upper end of the first shaft 113b to the upper end of the second shaft 113c.

[0218] The actuator 113e is a driving source for raising and lowering the electrode attachment portion 113f. In the present embodiment, the actuator 113e is configured with an air cylinder. The air cylinder is controlled by a control valve EV that adjusts the air pressure supplied from a compressor, and the control valve EV is controlled by the control device 64. The control device 64 has a second lift control unit 64m, which is a program that outputs an electrode lift command to the control valve EV. The electrode lift command includes a condition for controlling the control valve EV to adjust the air pressure supplied to the actuator 113e and change the height of the first electrode 110 and the second electrode 111. The control valve EV is controlled based on the electrode lift command, and the actuator 113e expands and contracts. As a result, the first electrode 110 and the second electrode 111 are raised and lowered to be inserted into the second preparation container 55 or to be evacuated from the second preparation container 55.

[0219] The electrode mounting portion 113f supports the first electrode 110 and the second electrode 111, and is raised and lowered by the actuator 113e. The electrode mounting portion 113f is connected to the upper end of the rod of the actuator 113e. The electrode mounting portion 113f is a plate member attached facing horizontally. A first insertion hole 114a through which the first shaft 113b is inserted is formed in the front portion of the electrode mounting portion 113f. A second insertion hole 115a through which the second shaft 113c is inserted is formed in the rear portion of the electrode mounting portion 113f. The electrode mounting portion 113f is extended to the rear of the second insertion hole 115a, and the first electrode 110 and the second electrode 111 are attached to the extended portion.

[0220] In this embodiment, the first electrode 110 is attached to the left part of the extended portion of the electrode attachment part 113f, and the second electrode 111 is attached to the right part. That is, the first electrode 110 and the second electrode 111 are arranged side by side along the device width direction B. In addition, the multiple second preparation containers 55 are also arranged side by side at intervals in the device width direction B (predetermined direction) and are arranged in the same direction as the first electrode 110 and the second electrode 111.

[0221] When the second lift control section 64m extends the rod of the actuator 113e, the electrode attachment section 113f moves upward, as shown in the transition from the right to the left diagram of Fig. 33. At this time, the electrode attachment section 113f is guided by the first shaft 113b and the second shaft 113c and moves upward while maintaining a horizontal position.

[0222] On the other hand, when the second lift control section 64m contracts the rod of the actuator 113e, the electrode attachment section 113f moves downward, as shown in the transition from the left to the right diagram of Fig. 33. At this time, the electrode attachment section 113f is guided by the first shaft 113b and the second shaft 113c and moves downward while maintaining a horizontal position.

[0223] 33, when measuring pH or EC, the second lift control section 64m controls the actuator 113e to contract the rod, thereby bringing the first electrode 110 or the second electrode 111 closer to the inside of the first preparation container 54 from above. After the measurement of pH or EC is completed, the second lift control section 64m controls the actuator 113e to extend the rod, thereby retracting the first electrode 110 or the second electrode 111 upward from the inside of the first preparation container 54.

[0224] The third movement mechanism 112 moves a lifting unit 113 in the device width direction B to change the position in the device width direction B relative to the first electrode 110 and the second electrode 111. As shown in FIG. 21 etc., the third movement mechanism 112 has a third shaft 119, a fourth shaft 120, a unit movement shaft 121, and a third motor 122.

[0225] The third shaft 119 and the fourth shaft 120 support the lifting unit 113 so as to be movable (slidable) in the device width direction B. The third shaft 119 and the fourth shaft 120 are disposed on the inner bottom 51 along the device width direction B. The third shaft 119 is disposed in the front part of the inner bottom 51, and the fourth shaft 120 is disposed rearward of the third shaft 119 and spaced apart.

[0226] A base 113a of the lifting unit 113 is attached to the third shaft 119 and the fourth shaft 120. Specifically, a first shaft insertion hole 113a1 through which the third shaft 119 is inserted so as to be movable in the device width direction B is formed in the front part of the base 113a of the lifting unit 113. A second shaft insertion hole 113a2 through which the fourth shaft 120 is inserted so as to be movable in the device width direction B is formed in the rear part of the base 113a of the lifting unit 113. In other words, since the base 113a of the lifting unit 113 is guided by two shafts, the third shaft 119 and the fourth shaft 120, which are separated in the front-rear direction, the lifting unit 113 is movable in the device width direction B while maintaining a stable posture.

[0227] The unit moving shaft 121 is a member for moving the base 113a of the lifting unit 113 in the device width direction B. The unit moving shaft 121 is disposed between the third shaft 119 and the fourth shaft 120. The unit moving shaft 121 is disposed so as to extend in the device width direction B. The unit moving shaft 121 is driven by a third motor 122 to move the lifting unit 113.

[0228] The third motor 122 rotates the unit moving shaft 121 around its axis. The third motor 122 is controlled by the control device 64. The control device 64 has a third movement control unit 64n, which is a program that outputs a drive command to the third motor 122. The drive command includes conditions such as the number of rotations and rotation time of the third motor 122. The third motor 122 changes the position of the lifting unit 113 by operating the third moving mechanism 57 based on the drive command.

[0229] A screw portion is formed on the outer circumferential surface of the unit moving shaft 121, spirally going around an axis extending along the device width direction B. In addition, the base 113a of the lifting unit 113 has a screw portion 113a3 with which the unit moving shaft 121 screws. The screw portion 113a3 screws into the screw portion on the outer circumferential surface of the unit moving shaft 121.

[0230] In other words, when the third movement control unit 64n controls the third motor 122 to rotate the unit movement shaft 121 in one direction (for example, forward), as the unit movement shaft 121 rotates, the screwing portion 113a3 is moved in one direction in the device width direction B. This causes the base 113a of the lifting unit 113 to move in one direction in the device width direction B.

[0231] On the other hand, when the third movement control unit 64n controls the third motor 122 to rotate the unit movement shaft 121 in the other direction (for example, in the reverse direction), as the unit movement shaft 121 rotates, the screw portion 113a3 is moved in the other direction in the device width direction B. This causes the base 113a of the lifting unit 113 to move in the other direction in the device width direction B.

[0232] The third movement control unit 64n changes the rotation speed, rotation time, and rotation direction of the third motor 122 to move the lifting unit 113 along the device width direction B to an arbitrary position (measurement position).

[0233] As described above, the second support member 87 is formed with the support parts 89 into which the second preparation container 55 is inserted and fixed, and the through holes 90 formed between the support parts 89 adjacent to each other in the device width direction B. The opening diameter of the through holes 90 is formed smaller than that of the support parts 89, and is larger than the outer diameter of the first electrode 110 or the second electrode 111. Therefore, as shown in Figures 34A, 34B, and 35, the first electrode 110 and the second electrode 111 can be inserted into the through holes 90 in the up-down direction C.

[0234] For example, when measuring pH by inserting the first electrode 110 from above into the second preparation container 55 which is inserted and fixed into the support part 89, the second electrode 111 provided in the lifting unit 113 adjacent to the first electrode 110 also descends together with the first electrode 110, causing the second electrode 111 to come into contact with the second support member 87.

[0235] Furthermore, when measuring EC by inserting the second electrode 111 from above the second preparation container 55 that is inserted and fixed in the support part 89 , the first electrode 110 comes into contact with the second support member 87 .

[0236] Therefore, a through hole 90 is formed in the second support member 87 to avoid physical interference with the second electrode 111, and when either the first electrode 110 or the second electrode 111 is placed in one of the multiple second preparation containers 55, the third moving mechanism 112 moves the other to the through hole 90 located between the second preparation container 55 and an adjacent second preparation container 55.

[0237] In addition, when considering the case where the first electrode 110 is placed in the second preparation container 55, since the second electrode 111 is located to the right of the first electrode 110, it is preferable to previously provide a through hole 90 to the right of the support portion 89 in the second support member 87.

[0238] Furthermore, when considering the case where the second electrode 111 is placed in the second preparation container 55, since the first electrode 110 is located to the left of the second electrode 111, it is advisable to form a through hole 90 to the left of the support portion 89 in the second support member 87.

[0239] Taking these factors into consideration, as shown in FIG. 34A, if the distance between the first electrode 110 and the second electrode 111 is Ps, then in the second support member 87 of this embodiment, from left to right, the spacing between the first support portion 89a, the first through hole 90a, the second support portion 89b, the second through hole 90b, the third support portion 89c, the third through hole 90c, the fourth support portion 89d, the fourth through hole 90d, and the fifth support portion 89e can be set to the distance Ps.

[0240] As described above, when the multiple second preparation containers 55 are arranged at equal intervals (approximately twice the interval Ps) in one direction and the first electrodes 110 and the second electrodes 111 are arranged alternately at the interval Ps in one direction, the third moving mechanism 112 may be configured such that, when either the first electrode 110 or the second electrode 111 is placed in one second preparation container 55 among the multiple second preparation containers 55, the other electrode is not placed in the second preparation container 55. This "not placing the other electrode in the second preparation container 55" means that the other electrode is moved between the second preparation container 55 and an adjacent second preparation container 55, in other words, moved between the second preparation container 55 and an adjacent second preparation container 55.

[0241] If there is sufficient installation space, the first electrode 110 can be placed in one of the multiple second preparation containers 55 while the second electrode 111 can be placed in the other second preparation containers 55 at the same time.

[0242] With the above-described configuration, the pH and EC of the soil D1 in the second preparation container 55 can be measured using the two electrodes 110, 111 while preventing the first electrode 110 and the second electrode 111 from coming into contact with the second support member 87.

[0243] Furthermore, the measuring device 56 may wash the electrodes 110, 111 with a washing liquid each time the soil D1 is measured. In this embodiment, the measuring device 56 includes a washing tank 126 that contains a washing liquid (e.g., purified water) for washing the electrodes 110, 111. If the state in which the lifting unit 113 is positioned to the leftmost position by the third moving mechanism 112 is defined as the "initial position", the washing tank 126 is disposed at the initial position or in the vicinity of the initial position. In the example shown in FIG. 21 etc., the washing tank 126 is provided at the initial position. In other words, the third moving mechanism 112 can wash the electrodes 110, 111 when moving the lifting unit 113 to the initial position. Furthermore, the third moving mechanism 112 can be said to move between the soil D1 in the second preparation container 55 and the washing liquid in the washing tank 126.

[0244] As described above, by cleaning the first electrode 110 and the second electrode 111 after each measurement, it is possible to prevent foreign matter or soil D1 from remaining on the electrode surfaces, and it is possible to stably perform an analysis with high accuracy. <Effects> A preferred embodiment of the present invention provides a pretreatment device 1 for soil analysis, which is described in the following items. (Item A1) The pretreatment device 1 for soil analysis performs treatment of components contained in soil D1 collected in a field before analysis, and comprises: an extraction container 54 (first preparation container) having an opening 80e for taking in the soil D1 and an extraction liquid for extracting the components to be analyzed from the soil D1; a lid 82 for covering the opening 80e of the extraction container 54; a pressurizing section 76 for pressurizing the inside of the extraction container 54 with the lid 82 attached to the opening 80e of the extraction container 54; and a first seal 103 that is disposed between the extraction container 54 and the lid 82, and that closes the opening 80e by sealing the space between the extraction container 54 and the lid 82 by the pressurization.

[0245] According to the pretreatment device 1 for soil analysis relating to item A1, as the pressure unit 76 applies pressure to the inside of the extraction container 54, the first seal 103 can close the inlet 10 together with the lid 82 simply and reliably. (Item A2) The extraction container 54 has a bottom wall 80a and a side wall 80b that rises upward from the periphery of the bottom wall 80a and forms the opening 80e, the lid 82 has a top wall 82a and a peripheral wall 82b that hangs downward from the periphery of the top wall 82a, and the first seal 103 extends from one of the side wall 80b and the peripheral wall 82b to the other and curves along the other as it approaches the other.Pretreatment device 1 for soil analysis described in item A1.

[0246] According to the pretreatment device 1 for soil analysis relating to item A2, the contact area between the other of the side wall 80b and the peripheral wall 82b and the tip side of the first seal 103 is relatively large, thereby improving the sealing performance between the lid body 82 and the extraction container 54. (Item A3) The pretreatment device 1 for soil analysis according to item A2, wherein the peripheral wall 82b covers an outer periphery of the side wall 80b, and the first seal 103 curves toward the top wall 82a as it approaches the other side.

[0247] According to the pretreatment device 1 for soil analysis relating to item A3, the peripheral wall 82b of the lid body 82 covers the outer periphery of the side wall 80b of the extraction container 54, so that the contact area between the other of the side wall 80b and the peripheral wall 82b and the underside of the tip of the first seal 103 becomes relatively large, thereby improving the sealing performance between the lid body 82 and the extraction container 54. (Item A4) The soil analysis pretreatment device 1 described in item A3, wherein the first seal 103 extends from the inner peripheral surface of the peripheral wall 82b to the outer peripheral surface of the side wall 80b, and curves along the outer peripheral surface toward the top wall 82a as it approaches the outer peripheral surface of the side wall 80b.

[0248] According to the pretreatment device 1 for soil analysis relating to item A4, the lid body 82 can be easily attached to the extraction container 54, and when pressurized, air leaking out from the gap between the lid body 82 and the extraction container 54 acts on the first seal 103, thereby further adhering the first seal 103 to the side wall 80b. (Item A5) The pretreatment device 1 for soil analysis described in item A3, wherein the first seal 103 extends from the outer peripheral surface of the side wall 80b to the inner peripheral surface of the peripheral wall 82b, and curves along the inner peripheral surface toward the top wall 82a as it approaches the inner peripheral surface of the peripheral wall 82b.

[0249] According to the pretreatment device 1 for soil analysis relating to item A5, the underside of the tip of the first seal 103 curved toward the top wall 82a contacts the side wall 80b of the extraction container 54 with a relatively large contact area, thereby improving the sealing performance between the lid body 82 and the extraction container 54. (Item A6) The pretreatment device 1 for soil analysis according to item A2, wherein the side wall 80b covers an outer periphery of the peripheral wall 82b, and the first seal 103 curves toward the bottom wall 80a as it approaches the other side.

[0250] According to the pretreatment device 1 for soil analysis relating to item A6, the side wall 80b of the extraction container 54 covers the outer periphery of the peripheral wall 82b of the lid body 82, so that the contact area between the other of the side wall 80b and the peripheral wall 82b and the underside of the tip of the first seal 103 becomes relatively large, thereby improving the sealing performance between the lid body 82 and the extraction container 54. (Item A7) The pretreatment device 1 for soil analysis described in item A6, wherein the first seal 103 extends from the inner surface of the side wall 80b to the outer surface of the peripheral wall 82b, and curves along the outer surface toward the bottom wall 80a as it approaches the outer surface of the peripheral wall 82b.

[0251] According to the pretreatment device 1 for soil analysis relating to item A7, the upper tip surface of the first seal 103 curved toward the bottom wall 80a contacts the outer peripheral surface of the peripheral wall 82b of the lid body 82 with a relatively large contact area, thereby improving the sealing performance between the lid body 82 and the extraction container 54. (Item A8) The pretreatment device 1 for soil analysis described in item A6, wherein the first seal 103 extends from the outer peripheral surface of the peripheral wall 82b to the inner peripheral surface of the side wall 80b, and curves along the inner peripheral surface toward the bottom wall 80a as it approaches the inner peripheral surface of the side wall 80b.

[0252] According to the pretreatment device 1 for soil analysis relating to item A8, when pressurized, the air leaking out of the extraction container 54 acts on the first seal 103, thereby making the first seal 103 even more tightly attached to the side wall 80b. (Item A9) The pretreatment device 1 for soil analysis according to any one of items A1 to A8, wherein the first seal 103 extends in an endless loop shape along the gap between the extraction container 54 and the lid body 82.

[0253] According to the pretreatment device 1 for soil analysis relating to item A9, the gap between the extraction container 54 and the lid body 82 is seamlessly sealed by the endless first seal 103, thereby further improving the sealing performance between the lid body 82 and the extraction container 54. (Item A10) The pretreatment device 1 for soil analysis described in any one of items A1 to A9 includes: a pressure reduction section 77 that reduces the pressure inside the extraction container 54 when the lid 82 is attached to the opening 80e of the extraction container 54; and a second seal 104 that is disposed between the extraction container 54 and the lid 82 and that seals the space between the extraction container 54 and the lid 82 by reducing the pressure, thereby closing the opening 80e.

[0254] According to the pretreatment device 1 for soil analysis relating to item A10, when the inside of the extraction container 54 is pressurized, the first seal 103 seals between the extraction container 54 and the lid 82, and when the pressure is reduced, the second seal 104 seals between the extraction container 54 and the lid 82. Therefore, a more stable seal can be achieved against pressure fluctuations inside the extraction container 54. (Item A11) The extraction container 54 has a bottom wall 80a and a side wall 80b that rises upward from the periphery of the bottom wall 80a and forms the opening 80e, the lid 82 has a top wall 82a and a peripheral wall 82b that hangs downward from the periphery of the top wall 82a, and the second seal 104 is sandwiched between the upper end surface of the side wall 80b and the lower surface of the top wall 82a when the lid 82 is attached to the extraction container 54.Pretreatment device 1 for soil analysis described in item A10.

[0255] According to the pretreatment device 1 for soil analysis relating to item A11, the second seal 104 is sandwiched between the upper end surface of the side wall 80b of the extraction container 54 and the lower surface of the top wall 82a of the lid body 82, so that the space between the extraction container 54 and the lid body 82 can be more reliably sealed by simply pressing the lid body 82 against the upper end surface of the side wall 80b. (Item A12) Item 12. The pretreatment device 1 for soil analysis according to item 11, wherein the second seal 104 is formed of an elastic body that elastically deforms when sandwiched between the upper end surface of the side wall 80b and the lower surface of the top wall 82a.

[0256] According to the pretreatment device 1 for soil analysis relating to item A12, when clamped, the elastic body elastically deforms and expands between the extraction container 54 and the lid body 82, thereby making it possible to more reliably seal the space between the extraction container 54 and the lid body 82. (Item A13) The pretreatment device 1 for soil analysis according to item A10, wherein the second seal 104 extends in an endless loop along the gap between the extraction container 54 and the lid body 82.

[0257] According to the pretreatment device 1 for soil analysis relating to item A13, the gap between the extraction container 54 and the lid body 82 is seamlessly sealed by the endless second seal 104, thereby further improving the sealing performance between the lid body 82 and the extraction container 54. (Item A14) The pretreatment device 1 for soil analysis according to any one of items A1 to A13, further comprising an elevator 29 for raising and lowering the lid body 82 and attaching the lid body 82 to the extraction container 54.

[0258] According to the pretreatment device 1 for soil analysis relating to item A14, the lifting device 29 that moves the lid body 82 away from the extraction container 54 can press the lid body 82 against the side wall 80b, allowing the lid body 82 to be more securely attached to the extraction container 54. (Item B1) The pre-treatment device 1 for soil analysis performs processing before analysis of components contained in soil D1 collected in a farm field, and includes a first container 5 for storing the collected soil D1, a measuring member 9 for removing a certain volume of soil D1 from the soil D1 stored in the first container 5, a dish member 32 for receiving the soil from the measuring member 9, and a drive device 65 for supporting the dish member 32 and swinging the dish member 32 in a direction to drop the soil D1 received by the dish member 32.

[0259] According to the pretreatment device 1 for soil analysis relating to item B1, the soil D1 in the weighing member 9 of the first container 5 is received by the pan member 32, so the soil D1 can be dispensed appropriately and easily while relaying the pan member 32. Furthermore, the soil D1 from the weighing member 9 can be dispensed to any position, and the timing of dispensing can also be selected arbitrarily. This improves the flexibility of the processing procedure by the pretreatment device 1. (Item B2) The pretreatment device 1 for soil analysis described in item B1, wherein the drive device 65 rocks the pan member 32 back and forth a plurality of times when dispensing the soil D1 received by the pan member 32.

[0260] According to the pretreatment device 1 for soil analysis relating to item B2, the reciprocating rocking motion multiple times can prevent the soil D1 from remaining on the pan member 32. Therefore, the soil D1 taken out of the measuring member 9 can be sent to the next process with a constant volume. As a result, the accuracy of the soil analysis can be improved. (Item B3) The driving device 65 oscillates the dish member 32 around an axis extending horizontally, and the dish member 32 is formed so that its middle part is lower than both ends in the axial direction.Pretreatment device 1 for soil analysis described in item B1 or B2.

[0261] According to the pretreatment device 1 for soil analysis according to item B3, the soil D1 can be collected in the middle, the soil D1 can be prevented from falling from both ends, and the soil D1 can be received without being left behind from the measuring member 9. Furthermore, by swinging the pan member 32, the soil D1 collected in the middle can be dispensed in a direction perpendicular to the axial direction while still in a collected state. As a result, the accuracy of the soil analysis can be improved. (Item B4) The pretreatment device 1 for soil analysis according to item B3, wherein the middle portion of the dish member 32 is bent downward in a substantially V-shape.

[0262] According to the pretreatment device 1 for soil analysis relating to item B4, the effect of item B3 can be obtained simply and reliably. (Item B5) A pretreatment device 1 for soil analysis described in any one of items B1 to B4, comprising a sieving device 3 for removing foreign matter from the soil D1 contained in the first container 5, and a vibration mechanism 40 for vibrating the first container 5 horizontally relative to the pan member 32 when removing foreign matter with the sieving device 3.

[0263] According to the pretreatment device 1 for soil analysis relating to item B5, the vibration for sieving the soil D1 in the sieving device 3 can be easily generated by using the vibration mechanism 40. (Item B6) The vibration mechanism 40 is switchable between a sieving mode in which the first container 5 and the weighing member 9 are vibrated in the horizontal direction when removing foreign matter with the sieving device 3, and a dispensing mode in which the first container 5 and the weighing member 9 are vibrated in the horizontal direction when dispensing soil D1 from the weighing member 9.

[0264] According to the pretreatment device 1 for soil analysis relating to item B6, the vibration generated by the vibration mechanism 40 can be used not only to sift the soil D1 with the sieving device 3, but also to dispense the soil D1 from the weighing member 9. (Item B7) The pretreatment device 1 for soil analysis described in item B6, wherein the pan member 32 is wider outside in the horizontal direction than the falling range in which the soil D1 falls from the measuring member 9 by the vibration mechanism 40 in the dispensing mode.

[0265] According to the pretreatment device 1 for soil analysis related to item B7, the pan member 32 can receive the soil D1 dropping from the measuring member 9 more reliably. (Item B8) The measuring member 9 has a hole penetrating in the vertical direction and a quantification section 14 that removes the soil D1 contained in the first container 5 inside, the measuring member 9 is attached to the first container 5, and the quantification section 14 has a pair of downwardly extending wall sections 84L, 84R extended on one and the other sides in the vibration direction of the vibration mechanism 40. This is a pretreatment device 1 for soil analysis described in any one of items B5 to B7.

[0266] According to the pretreatment device 1 for soil analysis relating to item B8, the walls 84L, 84R extending to one side and the other side in the vibration direction guide the falling direction of the soil D1 dropped from the quantification unit 14. Therefore, the diffusion of the soil D1 from the quantification unit 14 can be suppressed, and the pan member 32 can receive the soil D1 more reliably. (Item B9) The pretreatment device 1 for soil analysis described in item B8 citing item B6, in which the pan member 32 is wider outward in the vibration direction than the range of movement from the position of the wall portions 84L, 84R on one side in the vibration direction when the wall portions 84L, 84R on one side are moved to one side of the pan member 32 by the vibration mechanism 40 in the dispensing mode to the position of the wall portions 84R, 84L on the other side in the vibration direction when the wall portions 84R, 84L on the other side are moved to the other side of the pan member 32.

[0267] According to the pretreatment device 1 for soil analysis relating to item B9, the distance between the pair of wall portions 84L, 84R is a width (length) that takes into account the amplitude of the vibration mechanism 40, so that even soil D1 that falls from the vibrating weighing member 9 can be more reliably received by the pan member 32. (Item B10) A pretreatment device 1 for soil analysis described in any one of items B1 to B9, which is equipped with a weight detection device 68 that detects the weight of soil D1 on the tray member 32, the drive device 65 oscillating the tray member 32 around a oscillating shaft 67 extending horizontally, the oscillating shaft 67 being positioned below the tray member 32, and the weight detection device 68 being provided between the tray member 32 and the oscillating shaft 67.

[0268] According to the pretreatment device 1 for soil analysis relating to item B10, it is possible to measure the weight of the soil D1 received by the pan member 32. Therefore, it is possible to perform an accurate analysis with a constant density of the soil D1. In addition, the soil D1 whose weight has been measured can be appropriately and easily sent to the next process. (Item B11) A pre-treatment device 1 for soil analysis as described in item B10, comprising a calculation device which calculates the weight based on the detection result detected by the weight detection device 68, and a second container 80 which is provided below the pan member 32 and which contains the soil D1 dispensed from the pan member 32, wherein the drive device 65 performs a first operation of swinging the oscillating shaft 67 to tilt the pan member 32 toward the second container 80, and performs a second operation of swinging the oscillating shaft 67 to tilt the pan member 32 in the direction opposite to the first operation, and the measuring device measures the weight of the pan member 32 which has completed the first operation and calibrates the weight detection device 68.

[0269] According to the pretreatment device 1 for soil analysis relating to item B11, the soil D1 remaining on the pan member 32 is dropped and removed by the first operation, and calibration is performed on the pan member 32 from which the soil D1 has been removed, thereby enabling accurate calibration. (Item B12) A pretreatment device 1 for soil analysis as described in item B10 or item B11, comprising a support frame 39 that supports a plurality of weight detection devices 68 together with the pan member 32, and a calculation device that measures the weight detected by the weight detection device 68, wherein the calculation device measures the weight of each of the soil D1 received by the plurality of pan members 32 based on the detection results of the plurality of weight detection devices 68.

[0270] According to the pretreatment device 1 for soil analysis related to this item B12, the calculation device 69 can measure the weight of each soil D1 based on the result detected by the weight detection device 68. Therefore, it is possible to perform a highly accurate analysis with the density of each soil D1 kept constant. (Item C1) The pre-treatment device 1 for soil analysis processes components contained in soil D1 collected in a farm field before analysis, and comprises: a first container 5 for storing the collected soil D1; a measuring member 9 having a plurality of quantification sections 14 for removing a certain volume of the soil D1 from the soil D1 stored in the first container 5; and a first moving mechanism 20 (moving mechanism) for moving the measuring member 9 to removal positions Pa, Pc for removing a certain volume of the soil D1 from the first container 5 to the quantification sections 14, and to dispensing positions Pb, Pd for dispensing the soil D1 removed to the quantification sections 14.

[0271] According to the pretreatment device 1 for soil analysis relating to this item C1, it is possible to dispense soil D1 collected in a farm field by taking it out to the measuring member 9, and dispensing it in a plurality of soil D1 quantities each having a fixed volume. This allows the soil D1 to be efficiently dispensed from the measuring member 9. (Item C2) The first moving mechanism 20 moves the weighing member 9 to the removal positions Pa, Pc corresponding to each of the multiple quantification sections 14 and / or the dispensing positions Pb, Pd corresponding to each of the multiple quantification sections 14.

[0272] According to the pretreatment device 1 for soil analysis relating to item C2, it is possible to take out a plurality of samples of soil D1 quantified to a certain volume by simply moving the weighing member 9 to the take-out positions Pa, Pc and / or the dispense positions Pb, Pd in ​​accordance with the quantification unit 14. This allows the soil D1 to be dispensed from the weighing member 9 simply and efficiently. (Item C3) A pretreatment device 1 for soil analysis described in item C2, in which the weighing member 9 moved to the removal position Pa, Pc corresponding to one of the multiple quantification sections 14 coincides with the discharge position Pb, Pd corresponding to the other quantification sections 14.

[0273] According to the pretreatment device 1 for soil analysis relating to item C3, the operation of dispensing the soil D1 from one quantification unit 14 and the operation of taking out the soil D1 to another quantification unit 14 can be performed simultaneously. This allows the soil D1 to be dispensed from the measuring member 9 simply, quickly and efficiently. (Item C4) The measuring member 9 includes a first quantification unit 14a and a second quantification unit 14b different from the first quantification unit 14a as the multiple quantification units 14, and is moved by the first moving mechanism 20 from the take-out position Pa corresponding to the first quantification unit 14a to the dispensing position Pb corresponding to the first quantification unit 14a to dispense the soil D1 from the first quantification unit 14a, and is moved by the first moving mechanism 20 from the take-out position Pc corresponding to the second quantification unit 14b to the dispensing position Pd corresponding to the second quantification unit 14b to dispense the soil D1 from the second quantification unit 14b.Pretreatment device 1 for soil analysis described in item C2 or item C3.

[0274] According to the pretreatment device 1 for soil analysis relating to this item C4, the measuring member 9 is moved by the first moving mechanism 20, and the soil D1 can be dispensed simply and efficiently by the first quantification unit 14a and the second quantification unit 14b. (Item C5) A pretreatment device 1 for soil analysis as described in items C1 to C4, which is provided with a second container 80 for containing the soil D1 from the quantification section 14 of the measuring member 9 that has been moved to the dispensing position Pb, Pd, and the second container 80 has a plurality of preparation containers 54, 55 for respectively containing the soil D1 from a plurality of the quantification sections 14.

[0275] According to the pretreatment device 1 for soil analysis relating to item C5, the second container 80 also has multiple preparation containers 54, 55 corresponding to multiple soil samples D1, so that various analyses can be performed for each preparation container 54, 55. (Item C6) A pretreatment device 1 for soil analysis described in item C5 citing item C4, wherein the multiple preparation containers 54, 55 include a first preparation container 54 to which extraction liquid for analyzing the soil D1 from the first quantification unit 14a is supplied, and a second preparation container 55 to which purified water for analyzing the soil D1 from the second quantification unit 14b is supplied.

[0276] According to the pretreatment device 1 for soil analysis relating to item C6, the solvent (extraction liquid or purified water) supplied to each of the preparation containers 54, 55 can be changed, and various analyses can be performed. (Item C7) A pretreatment device 1 for soil analysis described in item C6, comprising a support device 85 for supporting a plurality of the preparation containers 54, 55, wherein a plurality of the first containers 5 and the second containers 80 are provided, the support device 85 having a first support member 86 for supporting the plurality of the first preparation containers 54, a second support member 87 for supporting the plurality of the second preparation containers 55, and a second moving mechanism 53 for moving the first support member 86 and / or the second support member 87 to switch one of the plurality of the first preparation containers 54 and the plurality of the second preparation containers 55 to a supply position Pf for supplying the soil D1 from the quantification section 14, and to a retract position Pe away from the supply position Pf.

[0277] According to the pretreatment device 1 for soil analysis relating to item C7, the positions of the plurality of first preparation containers 54 and the plurality of second preparation containers 55 can be switched using the second moving mechanism 53, and it becomes possible to move any one of the plurality of first preparation containers 54 and the plurality of second preparation containers 55 to a supply position Pf where the soil D1 can be supplied from the quantification unit 14. This makes it possible to appropriately supply the soil D1 to the plurality of first preparation containers 54 and the plurality of second preparation containers 55 without changing the position where the soil D1 dispensed from the measuring member 9 falls. (Item C8) The first containers 5 are arranged in a horizontal direction perpendicular to the movement direction in which the measuring member 9 is moved, the first support member 86 and the second support member 87 are supported integrally, the multiple first preparation containers 54 and the multiple second preparation containers 55 are arranged in a vertical direction, and the second moving mechanism 53 switches the positions of the first support member 86 and the second support member 87 in the vertical direction, and switches the multiple first preparation containers 54 and the multiple second preparation containers 55 between the supply position Pf and the evacuation position Pe. Pretreatment device 1 for soil analysis described in item C7.

[0278] According to the pretreatment device 1 for soil analysis relating to item C8, it is possible to easily move either the multiple first preparation containers 54 or the multiple second preparation containers 55 to the supply position Pf simply by changing the position of the multiple first preparation containers 54 and the multiple second preparation containers 55 back and forth. (Item C9) The pretreatment device 1 for soil analysis according to item C7, wherein the second moving mechanism 53 switches the positions of the first support member 86 and the second support member 87 in the forward and backward directions along an arc-shaped trajectory in a plan view.

[0279] According to the pretreatment device 1 for soil analysis relating to item C9, the positions of the first support member 86 and the second support member 87 are switched along an arc-shaped trajectory, so that the first support member 86 and the second support member 87 do not overlap on the movement path, and the positions can be switched smoothly. (Item C10) The pretreatment device 1 for soil analysis described in item C7, wherein the second moving mechanism 53 is switchable between a switching mode in which the positions of the first support member 86 and the second support member 87 are switched along an arc-shaped trajectory in a planar view, and a stirring mode in which the positions of the first support member 86 and the second support member 87 are oscillated or rotated along an arc-shaped trajectory in a planar view.

[0280] According to the pretreatment device 1 for soil analysis according to item C10, the second moving mechanism 53 can perform both switching of the positions of the first preparation containers 54 and the second preparation containers 55 and stirring. Therefore, the pretreatment device 1 can be realized at a relatively low cost. (Item C11) The pretreatment device 1 for soil analysis according to any one of items C6 to C10, further comprising a measuring device 56 for measuring the pH and / or electrical conductivity of the soil D1 in the second preparation container 55.

[0281] According to the pretreatment device 1 for soil analysis relating to this item C11, not only can the soil D1 be pretreated, but also the pH and / or electrical conductivity can be measured. (Item C12) A pre-treatment device 1 for soil analysis which processes components contained in soil D1 collected in a field before analysis, comprising a second container 80 for storing the collected soil D1 and a measuring device 56 for measuring the pH and / or electrical conductivity of the soil D1, the second container 80 including a first preparation container 54 to which an extract for analyzing the soil D1 is supplied and a second preparation container 55 to which purified water for analyzing the soil D1 is supplied, and the measuring device 56 measures the pH and / or electrical conductivity of the soil D1 in the second preparation container 55.

[0282] According to the pretreatment device 1 for soil analysis relating to this item C12, not only can the soil D1 be pretreated, but also the pH and / or electrical conductivity can be measured. (Item C13) The measuring device 56 measures the pH and electrical conductivity of the soil D1 in the second preparation container 55, and has a first electrode 110 for measuring the pH of the soil D1, a second electrode 111 for measuring the electrical conductivity of the soil D1, and a third moving mechanism 57 for moving the first electrode 110 and the second electrode 111 into the second preparation container 55.

[0283] According to the pretreatment device 1 for soil analysis relating to item C13, even if there are two electrodes, each of the electrodes 110, 111 can be moved into the second preparation container 55 using the third moving mechanism 57, making it possible to properly measure both pH and EC. (Item C14) The second container 80 is provided in plurality, the multiple second preparation containers 55 are arranged in a predetermined direction (apparatus width direction B) at intervals, the first electrode 110 and the second electrode 111 are arranged in a predetermined first direction at intervals, and the third moving mechanism 57 does not place the other electrode 110 or the second electrode 111 into one of the multiple second preparation containers 55, as described in item C13 of the soil analysis pretreatment device 1.

[0284] According to the pretreatment device 1 for soil analysis relating to item C14, multiple second preparation containers 55 and the first electrode 110 and second electrode 111 are arranged in the same direction at intervals, so that by moving the first electrode 110 and the second electrode 111 along a specified direction, either one of the electrodes can be placed inside the second preparation container 55, thereby making it possible to measure pH and EC more appropriately. (Item C15) The pretreatment device 1 for soil analysis described in item C14, wherein when either the first electrode 110 or the second electrode 111 is placed in one of the multiple second preparation containers 55, the third moving mechanism 57 moves the other electrode between the second preparation container 55 and an adjacent second preparation container 55.

[0285] According to the pretreatment device 1 for soil analysis according to item C15, the first electrode 110 and the second electrode 111 can be placed in the second preparation container 55, one each. (Item C16) A pretreatment device 1 for soil analysis described in item C15, comprising a second support member 87 for supporting a plurality of the second preparation containers 55, the second support member 87 being formed with a plurality of support parts 89 for inserting and supporting the respective second preparation containers 55, and a through hole 90 arranged between the plurality of support parts 89, the third moving mechanism 57 moving either the first electrode 110 or the second electrode 111 to the through hole 90 located between the second preparation container 55 and an adjacent second preparation container 55 when either one of the first electrode 110 and the second electrode 111 is placed in one of the plurality of second preparation containers 55.

[0286] According to the pretreatment device 1 for soil analysis relating to item C16, of the first electrode 110 and the second electrode 111, the electrodes 110, 111 that are not placed in the second preparation container 55 can be placed in the through hole 90, and the electrodes 110, 111 that are not placed in the second preparation container 55 can be prevented from coming into contact with the second support member 87. (Item C17) The measuring device 56 is a pretreatment device 1 for soil analysis described in item C11 or C12, which has electrodes 110, 111 for measuring the soil D1, a washing tank 126 for containing a washing liquid to be used for washing, and a third moving mechanism 57 for moving the electrodes 110, 111 between the soil D1 in the second preparation container 55 and the washing liquid in the washing tank 126.

[0287] According to the pretreatment device 1 for soil analysis relating to item C17, the measurement electrodes 110, 111 can be washed with a cleaning solution, thereby preventing the aqueous solution after measurement from mixing with the aqueous solution in other second preparation containers 55, making it possible to perform highly accurate soil analysis. (Item C18) The first container 5 is formed with a pipeline 17 for dropping the soil D1 toward the quantification section 14, and the quantification section 14 is connected to the pipeline 17 when the first moving mechanism 20 moves the weighing member 9 to the removal position Pa, Pc, and is disconnected from the pipeline 17 when the first moving mechanism 20 moves the weighing member 9 to the discharge position Pb, Pd. This is the pretreatment device 1 for soil analysis described in items C1 to C17.

[0288] According to the pretreatment device 1 for soil analysis relating to item C18, the quantitative portion 14 of the measuring member 9 moved to the removal position Pa, Pc is connected to the pipeline 17, so that it is possible to prevent the soil D1 falling down the pipeline 17 from falling unintentionally. (Item D1) A pretreatment device 1 for treating components contained in soil D1 collected in a field before analysis, the pretreatment device 1 for soil analysis comprising a plurality of first containers 5 each having an intake 10 for taking in the collected soil D1, and an aeration device 7 arranged above the first containers 5 and discharging air from within the plurality of first containers 5, the aeration device 7 having a plurality of communication holes 22 each communicating with the intakes 10 of the plurality of first containers 5, a main body 12 through which air discharged from the plurality of first containers 5 passes via the plurality of communication holes 22, and a fan 27 provided in the main body 12 for drawing air from within the plurality of first containers 5 into the inside of the main body 12, and the plurality of communication holes 22 are surrounded by protrusions 22a that protrude upward between the plurality of communication holes 22 and other communication holes 22.

[0289] According to the pretreatment device 1 for soil analysis relating to this item D1, since the protrusion 22a protrudes upward, it is possible to prevent the soil D1 from moving from one communication hole 22 to another communication hole 22 among the multiple communication holes 22. Therefore, it is possible to prevent contamination of the soil D1 in one first container 5 with the soil D1 in another first container 5. (Item D2) The pretreatment device 1 for soil analysis according to item D1, wherein the protrusions 22a are steps protruding upward along the outer periphery of each of the plurality of communication holes 22.

[0290] According to the pretreatment device 1 for soil analysis relating to item D2, a stepped protrusion 22a that protrudes upward is arranged on the outer periphery of the multiple communication holes 22, so that the multiple communication holes 22 can be surrounded by the protrusion 22a all around, and contamination of the soil D1 in one first container 5 with the soil D1 in another first container 5 can be more reliably suppressed. (Item D3) The pretreatment device 1 for soil analysis according to item D1, wherein the protrusions 22a are ribs that partition the spaces between the plurality of communication holes 22 and protrude upward.

[0291] According to the pretreatment device 1 for soil analysis relating to item D3, the multiple communicating holes 22 are partitioned by upwardly protruding ribs, so that with a simple configuration, contamination of the soil D1 in one first container 5 with the soil D1 in another first container 5 can be more reliably suppressed. (Item D4) A pretreatment device 1 for soil analysis described in any one of items D1 to D3, comprising a heating device 6 for heating a plurality of the first containers 5, the heating device 6 having a fixing portion 35 for fixing the plurality of the first containers 5, and a heater 38 provided on the fixing portion 35 and for heating the fixing portion 35.

[0292] According to the pretreatment device 1 for soil analysis relating to this item D4, the fixing part 35 can serve both to support and heat the first container 5. Furthermore, the soil D1 in the multiple first containers 5 can be appropriately heated. (Item D5) The pretreatment device 1 for soil analysis according to item D4, wherein the heater 38 is disposed between the plurality of first containers 5 in the fixing portion 35.

[0293] According to the pretreatment device 1 for soil analysis relating to item D5, it becomes possible to heat the multiple first containers 5 more uniformly. (Item D6) The pretreatment device 1 for soil analysis according to item D4 or D5, wherein the fixing portion 35 is a metal plate having fixing holes 35a for fixing the plurality of first containers 5, respectively, formed therein.

[0294] According to the pretreatment device 1 for soil analysis relating to item D6, multiple first containers 5 can be inserted and fixed into the fixing holes 35a, respectively, making it possible to heat the multiple first containers 5 more evenly. (Item D7) A pretreatment device 1 for soil analysis described in any one of items D1 to D6, comprising a vibration mechanism 40 for vibrating the first container 5, the first container 5 having an extraction hole 11 for extracting the contained soil D1, and a mesh plate 15 having a passage portion 15a covering the extraction hole 11 inside the first container 5, which prevents the passage of foreign matter of a predetermined size or more contained in the soil D1 contained in the first container 5 and allows the passage of soil D1 having a particle size less than the predetermined size, a cover plate 16 formed to a size that covers the passage portion 15a, and a holding member 31 that holds the cover plate 16 inside the first container 5.

[0295] According to the pretreatment device 1 for soil analysis relating to item D7, by vibrating the first container 5 with the vibration mechanism 40, the cover plate 16 shifts from the position covering the passing portion 15a, leaving the passing portion 15a partially exposed, and soil D1 with a particle size less than a predetermined size passes through the passing portion 15a, making it possible to separate soil D1 with a particle size less than the predetermined size from foreign matter of a predetermined size or larger. (Item D8) The holding member 31 movably holds the cover plate 16 between a central position covering the passing portion 15a and a peripheral position exposing at least a portion of the passing portion 15a, and imparts a restoring force to return the cover plate 16 to the central position.

[0296] According to the pretreatment device 1 for soil analysis relating to item D8, when vibration is applied, the cover plate 16 moves between the central position and the peripheral position, exposing at least a part of the passing portion 15a for sieving, and when there is no vibration, the cover plate 16 is restored to the central position by the restoring force. As a result, while sieving is automatically performed simply by applying vibration, it is also possible to prevent the soil D1 from unintentionally falling from the passing portion 15a when there is no vibration. (Item D9) The pretreatment device 1 for soil analysis described in item D8, wherein the holding member 31 causes the cover plate 16 to move back and forth between the central position and the peripheral position when the vibration mechanism 40 vibrates the first container 5, and returns the cover plate 16 to the central position when the vibration mechanism 40 is not vibrating the first container 5.

[0297] According to the pretreatment device 1 for soil analysis relating to item D9, sieving can be performed automatically just by applying vibration, and unintentional dropping of the soil D1 from the passage section 15a can be suppressed. (Item D10) The pretreatment device 1 for soil analysis described in item D8 or item D9, wherein the holding member 31 is a spring member having one end connected to the cover plate 16 and the other end connected to the inside of the first container 5.

[0298] According to the pretreatment device 1 for soil analysis relating to item D10, the effect of D9 can be obtained with a simple configuration.

[0299] Although the embodiment of the present invention has been described above, the embodiment disclosed herein should be considered as illustrative and not restrictive in all respects. The scope of the present invention is indicated by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0300] 1 Pretreatment Equipment 3. Sieving device 5 1st container 9. Measuring elements 14 Quantification section 32 Plate parts 39 Support frame 40 Vibration mechanism 56 Measuring Equipment 64 Control device (calculating device) 65 Drive Unit 67 Swing Axis 68 Weight detection device 80 Second container 84L Left wall 84R Right wall D1 Soil

Claims

1. A pretreatment device that processes components contained in soil collected from a farm field before analyzing the components, A first container for containing the collected soil; A measuring member for removing a certain volume of soil from the soil contained in the first container; a dish member for receiving the soil from the metering member; A drive device that supports the pan member and swings the pan member in a direction to drop the soil received by the pan member; A pretreatment device for soil analysis comprising:

2. 2. The pretreatment device for soil analysis according to claim 1, wherein the driving device swings the pan member back and forth a plurality of times when dispensing the soil received by the pan member.

3. The drive device swings the plate member around an axis extending in a horizontal direction, 3. The pretreatment device for soil analysis according to claim 2, wherein the dish member is formed so that a middle portion thereof is lower than both ends in the axial direction.

4. 4. The pretreatment device for soil analysis according to claim 3, wherein the middle portion of the dish member is bent downward in a substantially V-shape.

5. A sieving device for removing foreign matter from the soil contained in the first container; a vibration device that vibrates the first container in a horizontal direction relative to the dish member when removing foreign matter with the sieve device; The pretreatment device for soil analysis according to claim 1 ,

6. The pretreatment device for soil analysis as described in claim 5, wherein the vibration device is switchable between a sieving mode in which the first container and the weighing member are vibrated in the horizontal direction when removing foreign matter with the sieving device, and a dispensing mode in which the first container and the weighing member are vibrated in the horizontal direction when dispensing soil from the weighing member.

7. 7. The pretreatment device for soil analysis according to claim 6, wherein the pan member has a width wider outside in the horizontal direction than a falling range in which the soil falls from the measuring member by the vibration device in the dispensing mode.

8. The measuring member has a metering portion which is a hole penetrating in a vertical direction and which takes out the soil contained in the first container to an inside thereof, The pretreatment device for soil analysis according to claim 6, wherein the measuring member is attached to the first container, and a pair of downwardly extending wall portions are provided on one and the other sides of the quantification section in the vibration direction of the vibration device.

9. A pretreatment device for soil analysis as described in claim 8, wherein the plate member is wider outward in the vibration direction than the range of movement from the position of the wall portion on one side in the vibration direction when the wall portion on one side is moved to one side of the plate member by the vibration device in the dispensing mode to the position of the wall portion on the other side when the wall portion on the other side in the vibration direction is moved to the other side of the plate member.

10. a weight detection device for detecting the weight of the soil on the pan member; The drive device swings the plate member around a swing axis extending horizontally, The pivot shaft is disposed below the plate member, 2. The pretreatment device for soil analysis according to claim 1, wherein said weight detection device is provided between said pan member and said swing shaft.

11. a calculation device that calculates the weight based on a detection result detected by the weight detection device; and A second container provided below the dish member for receiving soil discharged from the dish member; Equipped with The drive device performs a first operation of swinging the swing shaft to tilt the tray member toward the second container, and performs a second operation of swinging the swing shaft to tilt the tray member in a direction opposite to the first operation, The pretreatment device for soil analysis according to claim 10 , wherein the calculation device measures the weight of the pan member that has completed the first operation, and calibrates the weight detection device.

12. a support frame that supports a plurality of the weight detection devices together with the pan member; a calculation device for calculating the weight detected by the weight detection device; Equipped with The pretreatment device for soil analysis according to claim 10 , wherein the calculation device measures the weight of each of the soils received by the plurality of pan members based on the detection results of the plurality of weight detection devices.

Images