Soil sample grinding device for soil detection and use method thereof

Abstract

The invention relates to the technical field of soil sample treatment, in particular to a soil sample grinding device for soil detection and a using method thereof.The soil sample grinding device comprises an operation table, a drying part used for containing a soil sampling pipe is arranged on the upper portion of the operation table, and a feeding device used for conveying dried soil is arranged below the drying part; the output end of the feeding device is provided with a grinding part used for grinding soil, the grinding part comprises a chassis used for containing samples, a pressing disc is arranged above the chassis, the pressing disc is connected with a driving device, operation is easy, replacement is easy, the maintenance difficulty is lowered, the sample transferring frequency is effectively reduced, the grinding efficiency is improved, and the grinding efficiency is improved. And the purity of the sample is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sample processing, and in particular to a soil sample grinding device for soil detection and a use method thereof. Background Art

[0002] Soil resources are rich and of various types. Different soils contain different nutrients and are subject to different degrees of pollution. Therefore, soil collection and analysis are of great significance. For example, research on agricultural production, soil pollution control, animal and plant research, etc. all require soil sampling and analysis. In the process of soil sampling and analysis, in order to make the soil analysis more accurate, the block soil needs to be precisely crushed to facilitate accurate analysis of the soil. After the soil sample is sampled, a detection instrument is needed to analyze the composition of the soil.

[0003] In the existing soil sample analysis, it is necessary to test the moisture content of the sample. After the test, the sample needs to be dried or air-dried, and then ground, screened, and other processes are performed. The existing processing methods are mostly step-by-step processing. The soil sample is first taken out from the inside of the sampling tube and placed in a frame to dry. Due to direct drying, the soil sample will clump and take a long time. Then, it is hammered or pounded with a rubber hammer, mortar, etc. to break it. This operation method is time-consuming and labor-intensive, and it also requires frequent transfer of soil samples. In this process, other components are easily mixed in, resulting in errors in the test results. Therefore, a new device that can reduce sample transfer and can grind in time according to soil samples is needed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that the grinding process of soil samples requires many steps that affect the detection results, and to provide a soil sample grinding device for soil detection and a method of using the same.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a soil sample grinding device for soil detection, comprising an operating table, a drying part for accommodating a soil sampling tube is arranged on the upper part of the operating table, a feeding device for conveying dried soil is arranged below the drying part, a grinding part for grinding soil is arranged at the output end of the feeding device, the grinding part comprises a bottom plate for holding the sample, a pressure plate is arranged above the bottom plate, and the pressure plate is connected to a driving device.

[0006] Furthermore, the drying section includes a support plate arranged on the operating table, a mounting plate is arranged on the upper part of the support plate, a sample bin for accommodating a soil sampling tube is arranged inside the mounting plate, and an end cap for compacting the soil sampling tube is detachably arranged on the upper part of the sample bin.

[0007] Furthermore, a discharge plate is provided at the bottom of the sample bin, a plurality of ball bearings are provided on the inner wall of the sample bin, a through hole is provided on the side wall of the sample bin, a driving wheel abutting against the outer wall of the soil sampling tube is provided inside the through hole, and the driving wheel is connected to a first motor provided on the mounting plate.

[0008] Furthermore, a heating rod for inserting into the soil sampling tube is arranged at the lower part of the end cover, and the heating rod is electrically connected to the terminal arranged on the side of the end cover.

[0009] Furthermore, a second motor is provided on the upper portion of the end cover, a swivel is provided on the output end of the second motor, a wavy slide groove is provided on the side wall of the swivel, and a plurality of pressure rods are provided on the lower portion of the end cover, and the lower portion of the pressure rods is inserted into the interior of the soil sampling tube.

[0010] Furthermore, a fixing ring is arranged at the lower part of the end cover, the pressure rod passes through the fixing ring, and a spring is wound around the outer wall of the pressure rod.

[0011] Furthermore, a plurality of the pressure rods are arranged around the heating rod, and a scraper for scraping material toward the heating rod is arranged at the lower part of the end cover.

[0012] Furthermore, the feeding device comprises a receiving hopper, a feeding auger is arranged at the bottom of the receiving hopper, and an output end of the feeding auger is arranged between the chassis and the pressure plate.

[0013] Furthermore, the grinding part includes an adjustment frame arranged on the operating table, the chassis is conical, a discharge port is arranged at the bottom of the chassis, and a material receiving bucket for weighing is arranged below the discharge port.

[0014] A method for using a soil sample grinding device for soil testing comprises the following steps: firstly, opening an end cover and closing a discharge plate at the bottom of a sample bin; after soil sampling is completed, firstly measuring the moisture content of the sample; then, directly placing the entire soil sampling tube vertically into the interior of the sample bin; then, covering the end cover on the upper part of the sample bin; inserting a heating rod and a pressure rod into the interior of the soil sampling tube; starting a first motor to drive the soil sampling tube to rotate inside the sample bin; under the action of a scraper, the soil sample inside will flow toward one side of the heating rod; the heating rod heats and evaporates the moisture inside; in this process, starting a second motor and moving the pressure rod up and down to stir the sample; after drying is completed, opening the discharge plate, and the pressure rod squeezes the soil sample downward and drops it into the interior of a feeding auger; the feeding auger conveys the soil sample between a bottom plate and a pressure plate; the pressure plate rotates on the bottom plate to further grind the soil sample; after grinding, the sample enters the interior of a receiving barrel below to complete the grinding of the soil sample.

[0015] The beneficial effects of the embodiment of the present invention are as follows: a plurality of balls are embedded on the inner wall of the sample bin to reduce the friction of the soil sampling tube when it rotates; a plurality of pressure rods are arranged around the heating rod; when the soil sampling tube rotates, the scraper abuts against the inner wall thereof, pushing the soil sample at the edge position to the middle position; the bending portion at the bottom of the scraper can flip the soil sample upward, realizing the stirring function, so that the soil sample is in a flowing state during the entire drying process; during the turning process of the soil sample, no large volume of agglomerates will exist, achieving the effect of preliminary crushing, and making the entire drying effect more uniform;

[0016] The mounting seat is conical, and a grinding disc is installed at the bottom of the mounting seat. The mounting seat and the grinding disc are connected by bolts. A groove that abuts against the supporting ball is provided at the bottom of the grinding disc. A rotating rod is provided on the back of the mounting seat. When the rotating rod is pressed toward one side of the grinding disc, the grinding disc will tilt. The third motor rotates continuously, so that the grinding disc rotates and grinds cyclically on the chassis. The operation is simple and easy to replace, which reduces the difficulty of maintenance, effectively reduces the number of sample transfers, improves the grinding efficiency, and ensures the purity of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0019] Figure 3 It is a side view structural schematic diagram of the present invention;

[0020] Figure 4 It is a schematic diagram of the angle structure of the grinding part of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal structure of the end cover of the present invention;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the end cover of the present invention;

[0023] In the figure: 1. operating table; 101. first motor; 102. second motor; 103. third motor; 2. support plate; 201. mounting plate; 202. sample chamber; 203. ball bearing; 204. electric push rod; 3. end cover; 301. swivel; 302. pressure rod; 303. fixing ring; 304. heating rod; 305. scraper; 4. feeding auger; 5. adjusting frame; 501. bottom plate; 502. chassis; 503. pressure plate; 504. adjusting bolt; 505. supporting ball; 6. turntable; 601. connecting rod; 602. rotating rod; 603. skirt; 7. receiving barrel. DETAILED DESCRIPTION

[0024] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] See also Figures 1 to 6 The embodiment of the present invention discloses a soil sample grinding device for soil detection, which mainly includes an operating table 1, a drying part, a feeding device and a grinding part. The operating table 1 serves as the basis of the entire device. Support legs can also be installed at the bottom of the operating table 1 to adapt to the operating height. A control panel is also provided on the operating table 1 for controlling the drying time and the feeding amount. The drying part is located on one side of the upper part of the operating table 1 and is used to dry the soil sample. The feeding device is located below the drying part and is responsible for transporting the dried soil sample to the grinding part. The grinding part is responsible for finely grinding the soil sample, so that the soil sample can be dried and ground on the operating table 1, thereby simplifying the structure of the grinding device.

[0026] The drying part is composed of a support plate 2, a mounting plate 201, a sample bin 202, a discharge plate, a ball bearing 203, a through hole, a driving wheel and a first motor 101. The support plate 2 is vertically fixed on the operating table 1, and the mounting plate 201 is mounted on the side of the support plate 2. The sample bin 202 is detachably arranged inside the mounting hole on the mounting plate 201 to accommodate a soil sampling tube. The diameter of the sample bin 202 is slightly larger than the diameter of the soil sampling tube and is used to directly place the soil sampling tube, thereby eliminating the step of rotating the soil sample multiple times, reducing the probability of foreign components entering, and improving the accuracy of detection. A discharge plate is arranged at the bottom of the sample bin 202 to control the discharge of the soil sample. The discharge plate is connected by an electric push rod 204 arranged on the side. During drying, the discharge plate is in a closed state to prevent undried soil samples from falling. Generally speaking, the soil sampling tube is a circular tube with openings at both ends. The discharge plate makes the sample discharge controllable and improves the control effect.

[0027] A plurality of ball bearings 203 are embedded on the inner wall of the sample bin 202 to reduce the friction of the soil sampling tube during rotation, and the ball bearings 203 also provide an installation gap between the soil sample tube and the sample bin 202. A through hole is opened on the side wall of the sample bin 202, and a driving wheel is installed in the through hole. The driving wheel is connected to the first motor 101, and the soil sampling tube is driven to rotate in the sample bin 202 through the rotation of the driving wheel. An end cover 3 is detachably installed on the top of the sample bin 202 to facilitate the placement of the soil sampling tube. A heating rod 304 is provided in the middle position of the lower part of the end cover 3, and a plurality of pressure rods 302 are provided around the heating rod 304. The heating rod 304 is used to dry the moisture in the soil sample and is connected to an external power supply through a terminal. The lower part of the pressure rod 302 is inserted into the soil sampling tube to stir the soil sample and improve the drying efficiency.

[0028] A second motor 102 is installed on the upper part of the end cover 3. The second motor 102 is installed vertically. The output end of the second motor 102 is connected to the rotating ring 301. A wavy groove is provided on the side wall of the rotating ring 301. A fixing ring 303 is provided at the lower part of the end cover 3. The pressure rod 302 passes through the fixing ring 303, and a spring is wound around the outer wall of the pressure rod 302, so that the pressure rod 302 can move up and down when the rotating ring 301 rotates. A gap is provided between the pressure rods 302 to facilitate the contact between the soil sample and the heating rod 304. A scraper 305 is also provided at the lower part of the end cover 3. The scraper 305 is inclined, and the bottom of the scraper 305 is provided with an imaginary bend. When the soil sampling tube rotates, the scraper 305 abuts against its inner wall to push the soil sample at the edge position to the middle position. The scraper 305 The bent portion at the bottom can flip the soil sample upward to achieve a stirring function. When in use, the soil sample tube is driven by the first motor 101 to rotate inside the sample bin 202, causing the soil sample to rotate. Under the extrusion of the scraper 305 and the action of the pressure rod 302, the internal soil sample will flip left and right and up and down inside the soil sample tube, so that the soil sample is in a flowing state during the entire drying process. During the flipping of the soil sample, there will be no large volume of lumps, achieving a preliminary crushing effect, and making the entire drying effect more uniform. During use, it is only necessary to place the soil sample tube inside the sample bin 202, eliminating more human intervention and greatly improving the detection effect. After the drying is completed, the discharge plate is opened under the drive of the electric push rod 204, and the pressure rod 302 continues to move, pressing the dried soil sample through the opened discharge plate, which will prevent the soil from accumulating inside the sampling tube and improve the discharge effect.

[0029] The feeding device consists of a receiving hopper and a feeding auger 4. The receiving hopper is located below the discharge plate and is used to receive the dried soil sample. The feeding auger 4 is installed at the bottom of the receiving hopper to transport the soil sample to the grinding part. The use of auger transportation can accurately control the feeding amount each time, and the feeding is uniform, which can prevent the grinding part from being blocked due to excessive feeding at one time, improve the grinding effect, and control the discharge amount.

[0030] The grinding part is composed of an adjusting frame 5, a chassis 502, a pressure plate 503 and a driving device. The cross section of the chassis 502 is conical, and a discharge port is provided at the bottom. A receiving bucket 7 is placed below the discharge port to collect the ground soil sample. The pressure plate 503 is located above the chassis 502 and is driven by the driving device to rotate on the chassis 502 to grind the soil sample. A supporting ball 505 is provided at the discharge port. The chassis 502 is fixed on the bottom plate 501. Both ends of the bottom plate 501 pass through the adjusting frame 5. An adjusting screw 504 is provided on the outside of the adjusting frame 5 (it can also be controlled by a ball screw 203 to achieve electric control) connected to the bottom plate 501. The adjusting screw 504 changes the chassis 502 and the pressure plate 503. The spacing between them can control the particle size of the grinding, wherein the pressure plate 503 includes a mounting seat, the mounting seat is conical, a grinding disc is installed at the bottom of the mounting seat, the mounting seat and the grinding disc are connected by bolts, a groove abutting against the supporting ball 505 is arranged at the bottom of the grinding disc, the driving device is a third motor 103, a turntable 6 is arranged at the output end of the third motor 103, a plurality of connecting holes are arranged on the turntable 6, a connecting rod 601 is installed inside the connecting hole, a rotating rod 602 is arranged on the back side of the mounting seat, one end of the rotating rod 602 is connected to the rotating shaft arranged at the center position of the mounting seat, the connecting rod 601 is connected to the rotating rod 602, a skirt 603 is also arranged at the end of the rotating rod 602 for abutment, and the end of the rotating rod 602 is arranged A roller is arranged to abut against the skirt 603. When in use, the connecting rod 601 is tilted in the direction of rotation. When the third motor 103 drives the turntable 6 to rotate, the connecting rod 601 pushes one end of the rotating rod 602 to rotate along the back side of the mounting seat. Since there is a gap between the grinding disc and the chassis 502, when the rotating rod 602 is pressed against one side of the grinding disc, the grinding disc will tilt. The third motor 103 rotates continuously, so that the grinding disc rotates and grinds cyclically on the chassis 502. The auger delivers the soil sample between the grinding disc and the chassis 502 when the grinding disc and the chassis 502 are tilted. The grinding disc and the chassis 502 can be made of ceramics, which is low in cost and easy to replace. When the soil sample enters between the grinding disc and the chassis 502, the back and forth grinding and pushing of the grinding disc will further The soil is finely ground. Compared with the prior art that uses a metal ball mill for grinding, this prevents metal or other impurities from entering the soil sample, improves the grinding effect, and ensures the accuracy of the test results. The grinding disc and the mounting seat are assembled as a pressure plate 503, which is convenient for replacing grinding discs of different specifications according to actual conditions. The operation is simple and easy to replace, which reduces the difficulty of maintenance, effectively reduces the number of sample transfers, improves the grinding efficiency, and ensures the purity of the sample. After grinding, the soil sample will move to the middle position of the chassis 502 and fall into the receiving bucket 7 through the discharge port. The weighing scale at the bottom displays the weight after grinding. When the weight reaches the limit, the grinding is stopped and the receiving bucket 7 is taken out for the next step.

[0031] Here’s how to use it:

[0032] Open the end cover, close the discharge plate, and place the sampling tube containing the soil sample vertically into the sample bin.

[0033] Put the end cap on the upper part of the sample chamber and ensure that the heating rod and the pressure rod are inserted into the soil sampling tube.

[0034] The first motor is started to drive the soil sampling tube to rotate in the sample chamber, and at the same time the heating rod starts to heat and dry the soil sample.

[0035] The second motor is started to drive the pressure rod to move up and down through the rotating ring and the wave-shaped slide groove to stir the soil sample and improve the drying efficiency.

[0036] After drying is completed, the discharge plate is opened, and the soil sample is squeezed downward by the pressure rod and falls into the receiving hopper.

[0037] The feeding auger is started to transport the soil sample between the base plate and the pressure plate.

[0038] The drive device is started and the pressure plate rotates on the base plate to grind the soil sample.

[0039] After grinding, the soil sample falls into the receiving bucket through the discharge port at the bottom of the chassis, completing the entire grinding process.

[0040] After grinding, open the end cover, take out the sampling tube, flush water inside the sample chamber, rinse the sample chamber, auger and grinding part, and dry them after flushing for the next use.

[0041] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0044] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A soil sample grinding device for soil testing, comprising an operating table, characterized in that: A drying section for accommodating a soil sampling tube is disposed on the upper portion of the operating table, a feeding device for conveying dried soil is disposed below the drying section, a grinding section for grinding the soil is disposed at the output end of the feeding device, the grinding section comprises a chassis for holding samples, a pressure plate is disposed above the chassis, and the pressure plate is connected to a driving device.

2. The soil sample grinding device for soil testing according to claim 1, characterized in that: The drying section comprises a support plate arranged on an operating table, a mounting plate is arranged on the upper part of the support plate, a sample bin for accommodating a soil sampling tube is arranged inside the mounting plate, and an end cap for pressing the soil sampling tube is detachably arranged on the upper part of the sample bin.

3. The soil sample grinding device for soil testing according to claim 2, characterized in that: A discharge plate is arranged at the bottom of the sample bin, a plurality of balls are arranged on the inner wall of the sample bin, a through hole is arranged on the side wall of the sample bin, a driving wheel abutting against the outer wall of the soil sampling tube is arranged inside the through hole, and the driving wheel is connected to a first motor arranged on the mounting plate.

4. The soil sample grinding device for soil testing according to claim 2, characterized in that: A heating rod for inserting into the soil sampling tube is arranged at the lower part of the end cover, and the heating rod is electrically connected to a terminal arranged on the side of the end cover.

5. The soil sample grinding device for soil testing according to claim 4, characterized in that: A second motor is arranged on the upper part of the end cover, a rotating ring is arranged on the output end of the second motor, a wavy sliding groove is arranged on the side wall of the rotating ring, and a plurality of pressure rods are arranged on the lower part of the end cover, and the lower part of the pressure rods is inserted into the interior of the soil sampling tube.

6. The soil sample grinding device for soil testing according to claim 5, characterized in that: A fixing ring is arranged at the lower part of the end cover, the pressure rod passes through the fixing ring, and a spring is wound around the outer wall of the pressure rod.

7. The soil sample grinding device for soil testing according to claim 5, characterized in that: A plurality of the pressure rods are arranged around the heating rod, and a scraper for scraping materials toward the heating rod is arranged at the lower part of the end cover.

8. The soil sample grinding device for soil testing according to claim 1, characterized in that: The feeding device comprises a receiving hopper, a feeding auger is arranged at the bottom of the receiving hopper, and an output end of the feeding auger is arranged between a chassis and a pressure plate.

9. The soil sample grinding device for soil testing according to claim 5, characterized in that: The grinding part comprises an adjustment frame arranged on an operating table, the chassis is conical, a discharge port is arranged at the bottom of the chassis, and a receiving bucket for weighing is arranged below the discharge port.

10. A method for using a soil sample grinding device for soil testing according to claim 1-9, firstly, open the end cover and close the discharge plate at the bottom of the sample bin. After soil sampling is completed, first measure the moisture content of the sample, then directly put the entire soil sampling tube vertically into the interior of the sample bin, then cover the end cover on the upper part of the sample bin, insert the heating rod and the pressure rod into the soil sampling tube, start the first motor to drive the soil sampling tube to rotate inside the sample bin, under the action of the scraper, the internal soil sample will flow to the side of the heating rod, the heating rod heats and evaporates the internal moisture, in this process, start the second motor and the pressure rod to move up and down to stir the sample, after drying is completed, the discharge plate is opened, the pressure rod squeezes the soil sample downward and falls into the feeding auger, the feeding auger transports the soil sample between the bottom plate and the pressure plate, the pressure plate rotates on the bottom plate to further grind the soil sample, after grinding, the sample enters the receiving bucket below to complete the grinding of the soil sample.

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