Soil sample drying device and method

Abstract

The invention relates to the technical field of sample preparation, in particular to a soil sample drying device and method. A drying box; the bottom plate is arranged at the inner bottom of the drying box; the placing frames are arranged on the bottom plate in a stacked mode and used for placing soil samples to be dried, connecting plates matched with the cams in number are arranged between the left inner wall and the right inner wall of each placing frame at intervals, sliding frames are arranged on the connecting plates in a sliding mode, the sliding frames on the bottom layer are in contact fit with the cams under the sliding frames, and the adjacent sliding frames are attached to each other; the soil samples are turned at intervals. A cam mechanism driven by a motor is adopted, so that the sliding frames in the placement frame intermittently move up and down, and the upper sliding frames are sequentially pushed through the top frame, so that the soil samples are continuously turned over, and the dynamic treatment method can ensure that each layer of soil samples can be in full contact with dry air; and the problem that upper-layer soil hinders evaporation of lower-layer water is avoided, and therefore the more uniform drying effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sample preparation, and in particular to a soil sample drying device and method. Background Art

[0002] In the field of environmental monitoring, the moisture content of soil samples has an important influence on the accuracy of analytical tests and the stability of results. In order to ensure the reliability of test data and the comparability between samples from different batches, removing excess moisture from soil samples is a crucial pretreatment step. At present, natural air drying and oven drying are mainly used to dry soil samples. Although natural air drying is simple to operate and low in cost, its efficiency is greatly affected by environmental factors (such as humidity, temperature and wind speed). Oven drying is widely used in laboratories because it can quickly and effectively remove moisture under well-controlled temperature conditions and ensure the consistency of experimental conditions.

[0003] After searching, according to a soil sample drying and heat preservation device for soil testing with the authorization announcement number CN106769384B, although the above device has certain advantages by the synergy of various components to achieve the purpose of replacing moist air with dry air to dry soil samples, in actual application, the device still has some limitations. Especially in the oven drying process, since soil samples are usually loose or sticky, they are prone to pile up, resulting in a slower drying speed for the bottom samples. For samples with a higher water content, the upper soil may hinder the evaporation of moisture in the bottom soil, making the drying process more difficult, which not only prolongs the drying time, but may also cause uneven drying, thus affecting the final analysis results.

[0004] Therefore, in order to solve these problems, it is necessary to develop a soil sample drying device and method that can ensure uniform drying of the bottom soil sample. Summary of the invention

[0005] In order to overcome the disadvantage of the above-mentioned prior art that the bottom soil accumulation is not easy to dry, the present invention provides a soil sample drying device and method that can ensure uniform drying of the bottom soil sample, so as to improve the drying efficiency and quality, thereby ensuring the accuracy and consistency of soil analysis testing.

[0006] The technical solution of the present invention is: a soil sample drying device, comprising:

[0007] The drying box has an opening at the front side, and movable doors are hingedly provided on both sides of the opening of the drying box;

[0008] The bottom plate is arranged at the inner bottom of the drying box, and the bottom plate is symmetrically provided with slots in the front and rear directions. Two motors adapted to the slot layout are also embedded and installed on the bottom plate. The output shafts of the motors are respectively connected with connecting shafts arranged in the slots on the same side, and cams are arranged on the connecting shafts at staggered intervals.

[0009] There are at least two placement frames, which are stacked on the bottom plate to place soil samples to be dried. Connecting plates matching the number of cams are arranged between the left and right inner walls of the placement frames. Sliding frames are slidably arranged on the connecting plates. The bottom sliding frame contacts and cooperates with the cam directly below, and the adjacent sliding frames fit each other to turn over the soil samples at intervals. An elastic member 1 is also arranged between the sliding frame and the lower side of the corresponding connecting plate.

[0010] The limiting frame is hingedly arranged at the rear side of the top of the placing frame and the shapes of the two are consistent;

[0011] There are multiple groups of connecting plates. Two connecting plates in the same group are respectively arranged on one side of the limit frame, and the two connecting plates are inserted and engaged with the placement frame directly above to stack multiple placement frames. Support plates matching the number of sliding frames are also arranged at intervals on both sides of the top of the limit frame. Top frames whose upper and lower ends are in contact with and cooperate with adjacent sliding frames are slidably arranged on the support plates to push the sliding frames of each layer to move. Elastic member three is also arranged between the top frame and the corresponding support plate.

[0012] Preferably, each placement frame is provided with outwardly extending protruding plates on both sides of the lower portion, and the upper end surface of the connecting plate is correspondingly provided with a groove structure matching the protruding plates, so that the protruding plates can be embedded in the corresponding grooves to form an inserted snap-fit ​​connection between the placement frame and the corresponding connecting plate.

[0013] Preferably, a guide sleeve is provided on the front side of the placement frame, and an insertion rod is penetrated and slidably provided on the guide sleeve. An elastic member 2 is also provided between the insertion rod and the corresponding guide sleeve. A locking plate that is plugged into and cooperates with the adjacent insertion rod is also provided on the front side of the limit frame to fix the position of the limit frame.

[0014] Preferably, a symmetrically arranged fixing mechanism is also provided on the bottom plate to fix the position of the bottom placement frame, the fixing mechanism includes push plates symmetrically slidably penetrated on both sides of the bottom plate, the push plates are in contact with and cooperate with the movable doors on the same side, and sliding blocks symmetrically slidably arranged on the push plates and slidably cooperate with the bottom plate in the same manner, the sliding blocks abut and cooperate with the bottom placement frame to fix the positions of both sides of the bottom placement frame, an elastic member four is provided between the end of the sliding block and the inner wall of the bottom plate, and a left-right through groove is provided in the middle of the sliding block, and longitudinal connecting rods are provided in the through grooves, and symmetrically inclined grooves adapted to the layout of the sliding blocks are provided on the push plates, and the connecting rods are slidably embedded in adjacent inclined grooves so that the sliding blocks can be pushed by the movement of the push plates.

[0015] Preferably, both sides of the placement frame are provided with slots adapted to the layout of the sliding blocks on the same side, and the slots are adapted to the ends of the corresponding sliding blocks so that the sliding blocks are pressed against the corresponding slots to fix the position of the placement frame.

[0016] Preferably, the drying box is provided with a separation mechanism for removing excess moisture in the steam, the separation mechanism comprising an air intake frame and an exhaust frame respectively connected to one side of the drying box, a circulation frame with one end connected to the air intake frame is provided at the rear of the drying box, filter plates for facilitating steam circulation, and molecular sieves located between the filter plates on both sides are symmetrically arranged in the circulation frame; an extraction pump is also installed on one side of the rear of the drying box, the air inlet of the extraction pump is connected to the circulation frame, and the air outlet of the extraction pump is connected to the exhaust frame.

[0017] Preferably, the drying box is also provided with a guide mechanism, which includes an air pump symmetrically arranged on the side of the drying box, and a guide frame is also arranged at the opening of the drying box. The side of the guide frame is connected to the air inlet of the air pump on the same side through an air inlet pipe, and the air outlet of the air pump is connected to the air outlet pipe connected to the drying box.

[0018] Preferably, the guide frame is in a semi-enclosed structure, so that the guide frame is continuously arranged along the left inner wall, the right inner wall and the top inner wall of the drying box.

[0019] The method for using the soil sample drying device comprises the following steps:

[0020] S1. Lay the soil samples on each placement frame, then rotate and lay down the limit frame, and insert the clamping plate through the insertion rod to fix the position of the limit frame and the placement frame, so that the limit frame and the corresponding placement frame form a whole, and then insert the loaded placement frames one by one into the connecting plates on both sides of the next layer of limit frames to achieve a stable clamping connection, and so on, until each layer of placement frames is stacked;

[0021] S2, opening the movable door, the push plate is released from the contact restriction, the elastic member 4 is reset, and the sliding blocks on both sides are urged to move away from each other along the inclined groove, and then the stacked placement frame is placed on the bottom plate in the drying oven, so that the placement frame is located between the sliding blocks on both sides, and the positions of the card slots on both sides of the bottom layer and the sliding blocks are calibrated;

[0022] S3, after placement is completed, the movable door is closed, and the movable door pushes the push plate backward, and under the action of the inclined groove, the sliding blocks on both sides are moved inward and embedded in the card slot of the bottom placement frame, thereby fixing the position of the placement frame;

[0023] S4, starting the drying box to start drying the soil sample inside;

[0024] S5, start the motor, the motor drives the corresponding cam to rotate, the cam hits the corresponding sliding frame above, so that the sliding frame slides up, the elastic member is deformed, and as the bottom sliding frame moves up, it synchronously pushes the top frame above it to rise together, causing the elastic member to deform three times, and then the movement of the top frame will trigger another sliding frame above it to slide up synchronously, and then the sliding frames at the corresponding positions of each layer will operate synchronously, and the soil samples placed in the area will be gradually lifted up. As the dislocated cam keeps hitting, the sliding frames of each layer move at the same frequency and a certain interval, so as to continuously lift up and transfer the upper layer of dried soil and expose the lower layer of soil for uniform drying;

[0025] S6. Start the extraction pump, and the high-temperature steam is sucked into the suction frame, so that the steam flows into the circulation frame, passes through the filter plate and enters the molecular sieve to absorb excess moisture, and then the dry gas flows to the exhaust frame, forming an effective steam circulation treatment;

[0026] S7. After drying is completed, start the air pumps on both sides to guide the hot air in the drying box to flow into the guide frame, and then discharge it through the air inlet pipe and the air outlet pipe to quickly reduce the temperature in the drying box;

[0027] S8. Finally, open the movable door again and carefully take out the dried soil sample to end the entire drying process.

[0028] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0029] 1. The present invention adopts a motor-driven cam mechanism to enable the sliding frame in the placement frame to move up and down intermittently, and pushes the upper sliding frame in turn through the top frame, thereby continuously turning over the soil sample. This dynamic processing method can ensure that each layer of soil sample can fully contact the dry air, avoiding the problem of the upper layer of soil hindering the evaporation of water in the lower layer, thereby achieving a more uniform drying effect, significantly shortening the drying time, and greatly improving the work efficiency of soil sample processing.

[0030] 2. The present invention adopts a fixing mechanism composed of a push plate, a sliding block, an elastic member and other components. When the movable door is closed, the position of the bottom placement frame can be automatically locked, and when the movable door is opened, the position is automatically unlocked, so as to simplify the operation process and improve the convenience of use.

[0031] 3. The present invention adopts the design of the connecting plate, so that each placement frame can be quickly assembled or disassembled through the connecting plate. The user can flexibly adjust the drying capacity according to actual needs, which is not only convenient for cleaning and maintenance, but also enhances the adaptability and flexibility of the device.

[0032] 4. The present invention is also provided with a separation mechanism and a flow guiding mechanism for effectively managing the steam and heat generated during the drying process, thereby preventing excess moisture from condensing on the sample surface again to affect the drying effect, and optimizing the airflow distribution inside the drying box, promoting the effective recycling of the airflow, and further ensuring the efficiency and uniformity of the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0034] Figure 2 It is a three-dimensional structural schematic diagram of components such as the movable door, the fixing mechanism and the separating mechanism of the present invention.

[0035] Figure 3 It is a three-dimensional structural schematic diagram of parts such as a placement frame, a connection plate and a fixing mechanism of the present invention.

[0036] Figure 4 It is a schematic diagram of the exploded structure of the components on the bottom plate of the present invention.

[0037] Figure 5 It is a planar structural sectional view of the placement frame, connecting plate, sliding frame and elastic member 1 of the present invention.

[0038] Figure 6 It is a three-dimensional structural schematic diagram of components such as a limit frame, a guide sleeve and an insertion rod of the present invention.

[0039] Figure 7 For the present invention Figure 6 Schematic diagram of the three-dimensional structure of part A.

[0040] Figure 8 It is a three-dimensional structural schematic diagram of various components of the fixing mechanism of the present invention.

[0041] Fig. 9 It is a three-dimensional structural cross-sectional view of each component of the separation mechanism of the present invention.

[0042] Fig.10 It is a three-dimensional structural schematic diagram of various components of the flow guide mechanism of the present invention.

[0043] The marks in the accompanying drawings provided by the present invention are: 1. drying box, 11. movable door, 12. bottom plate, 121. motor, 122. cam, 2. placement frame, 21. connecting plate, 22. sliding frame, 23. elastic part one, 24. slot, 3. limit frame, 31. guide sleeve, 32. insertion rod, 33. elastic part two, 34. positioning plate, 4. connecting plate, 41. support plate, 42. top frame, 43. elastic part three, 5. fixing mechanism, 51. push plate, 511. inclined groove, 52. sliding block, 53. connecting rod, 54. elastic part four, 6. separation mechanism, 61. suction frame, 62. extraction pump, 63. circulation frame, 64. filter plate, 65. exhaust frame, 7. guide mechanism, 71. air pump, 72. outlet pipe, 73. inlet pipe, 74. guide frame. DETAILED DESCRIPTION

[0044] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0045] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Embodiment: A soil sample drying device, such as Figure 1-Figure 7 As shown, including:

[0047] The drying box 1 has an opening at the front side, which is convenient for users to put in or take out soil samples. The left and right sides of the opening of the drying box 1 are hingedly provided with movable doors 11 that can be opened and closed;

[0048] The bottom plate 12 is arranged at the inner bottom of the drying box 1. The middle area of ​​the bottom plate 12 is symmetrically provided with slots in the front and rear directions. Two motors 121 adapted to the slot layout are also embedded and installed on the bottom plate 12. The output ends of the motors 121 face the slots on the same side. The output shafts of the motors 121 are respectively connected with couplings placed in the slots on the same side. The ends of the couplings are rotatably connected with the inner walls of the corresponding slots. Cams 122 are staggered and arranged at intervals on the couplings. The cams 122 are arranged at intervals in a left-right relative manner, so that the motors 121 drive the couplings to rotate continuously, thereby driving the cams 122 to rotate synchronously.

[0049] There are four placement frames 2, which are stacked on the bottom plate 12 to place the soil samples to be dried. The left and right inner walls of the placement frames 2 are spaced apart with connecting plates 21 that match the number of cams 122. The highest point of the connecting plate 21 is located below the top surface of the corresponding placement frame 2. Sliding frames 22 are slidably arranged on the connecting plates 21. The sliding frames 22 located at the bottom layer are in contact with the cam 122 directly below, and the upper and lower end surfaces of the sliding frames 22 are flush with the corresponding placement frames 2 (with Figure 5 As the main viewing angle, the sliding frame 22 effectively fills the interior of the placement frame 2, providing a stable placement platform for the soil sample to be dried, and under the guidance of the connecting plate 21, the sliding frame 22 slides in an up-and-down direction; specifically, the adjacent sliding frames 22 fit each other (with Figure 5 The soil sample is placed on the surface of the cam 122 to maintain a closed state and avoid unnecessary loss of materials. At the same time, the cam 122 is combined with the contact and cooperation with the adjacent sliding frame 22 to lift the soil sample placed in the area (such as Figure 5 The figure shows a state in which one of the sliding frames 22 is lifted by the corresponding cam 122. The soil in each area is intermittently processed in a staggered interval manner, so that the soil samples piled together can be pushed to transfer, and the soil samples in the upper and lower layers are effectively turned over and adjusted to ensure the effective drying of soil particles in each position. An elastic member 23 is also provided between the sliding frame 22 and the lower side of the corresponding connecting plate 21. In this embodiment, the elastic member 23 is a spring. Since the elastic member 23 is located at the lower position, the sliding frame 22 naturally maintains a drooping state in close contact with the connecting plate 21 in the initial state. When the sliding frame 22 moves upward, the elastic member 23 is compressed, thereby accumulating elastic potential energy, and providing the necessary restoring force for the subsequent automatic reset of the sliding frame 22.

[0050] The limiting frame 3 is hingedly arranged at the rear side of the top of the placing frame 2 and the shapes of the two are consistent, and can surround the top surface of the placing frame 2 to limit the placement of the soil sample; in addition, the limiting frame 3 can be turned over to open, so as to facilitate the removal of the soil sample after drying;

[0051] The connecting plates 4 are provided in four groups, and each group of connecting plates 4 has two connecting plates 4. The two connecting plates 4 in the same group are respectively arranged on the left and right sides of the top of the limiting frame 3, and the two are inserted and engaged with the placement frame 2 just above to stack and place multiple placement frames 2. Support plates 41 matching the number of sliding frames 22 are also arranged at intervals on the left and right sides of the top of the limiting frame 3. Top frames 42 whose upper and lower ends are in contact with and cooperate with adjacent sliding frames 22 are slidably arranged on the support plates 41. The top frames 42 are longitudinally arranged to push the sliding frames 22 of each layer to move. An elastic member 43 is also arranged between the top frame 42 and the corresponding support plate 41. In the present embodiment, the elastic member 43 is a spring.

[0052] Specifically, the left and right sides of the lower part of each placement frame 2 are respectively provided with protruding plates extending outward, and the upper end surface of the connecting plate 4 is correspondingly provided with a groove structure matching the protruding plates, so that the protruding plates can be embedded in the corresponding grooves to form an inserted snap-fit ​​connection between the placement frame 2 and the corresponding connecting plate 4, allowing each layer of the placement frames 2 to be stacked firmly, thereby effectively controlling the number of soil samples during the drying process. In addition, through the pushing action of the top frame 42, except for the sliding frame 22 at the bottom layer (pushed by the cam 122), the sliding frames 22 at the upper layer will move in unison through the synchronous drive of the top frame 42, achieving the synchronous transmission of the sliding frames 22 at each layer by the top frame 42 (such as Figure 7 As shown in the figure, soil samples at different positions are turned over to ensure the uniformity and integrity of the drying of the soil samples during the drying process.

[0053] like Figure 6 As shown, a guide sleeve 31 is provided on the front side of the placement frame 2, and an insertion rod 32 is penetrated and slidably provided on the guide sleeve 31. The insertion rod 32 slides left and right, and an elastic member 33 is provided between the insertion rod 32 and the corresponding guide sleeve 31. In this embodiment, the elastic member 33 is a spring. A locking plate 34 that is plugged into and cooperates with the adjacent insertion rod 32 is also provided on the front side of the limit frame 3 to fix the position of the limit frame 3.

[0054] Specifically, under the elastic action of the second elastic member 33, the insertion rod 32 can be firmly positioned after being inserted into the locking plate 34. When the insertion rod 32 is pushed out of the locking plate 34, the second elastic member 33 will deform to reserve elastic force for the subsequent resetting operation of the insertion rod 32, so as to facilitate the resetting movement of the insertion rod 32.

[0055] like Figure 2-Figure 4 and Figure 8 As shown, the bottom plate 12 is also provided with a symmetrically arranged fixing mechanism 5 for fixing the position of the bottom layer placing frame 2. The fixing mechanism 5 includes a push plate 51 that is symmetrically slidably arranged on both sides of the bottom plate 12. The push plate 51 is slidable in the front-back direction. The push plate 51 contacts and cooperates with the movable door 11 on the same side. The push plate 51 is symmetrically slidable in the front-back direction. The sliding block 52 that is also slidably matched with the bottom plate 12 is provided on the push plate 51. The sliding block 52 is slidable in the left-right direction. The sliding block 52 is in contact and cooperates with the bottom layer placing frame 2 to fix the bottom. At the left and right sides of the layer placement frame 2, four elastic members 54 are arranged between the ends of the sliding blocks 52 on both sides that are away from each other and the inner wall of the bottom plate 12. In this embodiment, the four elastic members 54 are springs, and the middle part of the sliding block 52 is provided with left and right through grooves, and longitudinal connecting rods 53 are arranged in the through grooves. The push plate 51 is symmetrically provided with oblique grooves 511 that are adapted to the layout of the sliding block 52, and the connecting rod 53 is slidably embedded in the adjacent oblique groove 511 so that the sliding block 52 can be pushed by the movement of the push plate 51.

[0056] like Figure 4 and Figure 5 As shown, the left and right sides of the placement frame 2 are respectively provided with a slot 24 adapted to the layout of the sliding block 52 on the same side, and the slot 24 is adapted to the end of the corresponding sliding block 52 so that the sliding block 52 is pressed against the corresponding slot 24 to fix the position of the placement frame 2.

[0057] Specifically, when the movable door 11 is closed, that is, the movable door 11 and the push plate 51 are in contact and abutment with each other, so that the connecting rod 53 is placed in the corresponding inclined groove 511 and close to the end of the elastic member 4 54 on the same side, and the elastic member 4 54 is in a stretched deformation state, that is, the sliding block 52 is close to and maintains the fit between the card slot 24 on the same side, thereby firmly abutting the position of the bottom layer of the placement frame 2 to achieve the effect of fixing the position;

[0058] On the contrary, when the movable door 11 is opened, the push plate 51 is free from the restriction, and the elastic member 54 is reset accordingly, so that the connecting rods 53 on both sides slide synchronously along the corresponding inclined grooves 511, and then drive the corresponding sliding blocks 52 to synchronously move away from the placement frame 2, thereby releasing the restriction on the placement frame 2.

[0059] like Figure 1 , Figure 2 and Fig. 9 As shown, the drying box 1 is provided with a separation mechanism 6 for removing excess moisture from the steam. The separation mechanism 6 includes an air intake frame 61 and an air exhaust frame 65 respectively connected to the left and right sides of the drying box 1. A circulation frame 63 whose left end is connected to the air intake frame 61 is provided at the rear of the drying box 1. Filter plates 64 for facilitating steam circulation and molecular sieves located between the filter plates 64 on both sides are symmetrically arranged in the circulation frame 63. The filter plates 64 are intended to promote steam circulation while blocking larger water droplets or impurities, and the molecular sieves are used to adsorb tiny water vapor molecules to achieve a more thorough dehumidification effect. An extraction pump 62 is also fixedly installed on the right side of the rear of the drying box 1. The air inlet of the extraction pump 62 is connected to the circulation frame 63, and the air outlet of the extraction pump 62 is connected to the exhaust frame 65. The dry steam treated by the circulation frame 63 is transported to the exhaust frame 65 through the suction action of the extraction pump 62, and finally discharged.

[0060] like Figure 1 , Figure 2 and Fig.10As shown, the drying box 1 is also provided with a guide mechanism 7, which includes an air pump 71 symmetrically arranged on the side of the drying box 1, and a guide frame 74 is also provided at the opening of the drying box 1. The guide frame 74 is a semi-enclosed structure, so that the guide frame 74 is continuously arranged along the left inner wall, the right inner wall and the top inner wall of the drying box 1 to form a stable frame around three sides, which can effectively guide the airflow and ensure that the airflow can flow along a predetermined path to improve the efficiency of heat dispersion. The side of the guide frame 74 is connected to the air inlet of the air pump 71 on the same side through the air inlet pipe 73, and the air outlet of the air pump 71 is connected to the air outlet pipe 72 connected to the drying box 1, so that when the dried soil sample needs to be taken out first, the heat flow inside the drying box 1 can be effectively pumped and dispersed to maintain a good taking environment.

[0061] Based on the above soil sample drying device, a method for using the soil sample drying device includes the following steps:

[0062] S1. Lay the soil samples on each placement frame 2, then rotate and lay down the limit frame 3, and insert the clamping plate 34 through the insertion rod 32 to fix the position of the limit frame 3 and the placement frame 2, so that the limit frame 3 and the corresponding placement frame 2 form a whole, and then insert the loaded placement frames 2 one by one into the connecting plates 4 on both sides of the next layer of limit frames 3 to achieve a stable clamping connection, and so on, until each layer of placement frames 2 is stacked;

[0063] S2, opening the movable door 11, the push plate 51 is freed from the contact restriction, and the elastic member 54 is reset, so that the sliding blocks 52 on both sides move away from each other along the inclined groove 511, and then the stacked placement frames 2 are placed on the bottom plate 12 in the drying box 1, so that the placement frames 2 are located between the sliding blocks 52 on both sides, and the positions of the card slots 24 on both sides of the bottom layer and the sliding blocks 52 are calibrated;

[0064] S3, after placement is completed, the movable door 11 is closed, and at the same time, the movable door 11 pushes the push plate 51 to move backward, and under the action of the inclined groove 511, the sliding blocks 52 on both sides are moved inward and embedded in the card slots 24 of the bottom placement frame 2, thereby fixing the position of the placement frame 2;

[0065] S4, starting the drying box 1 to start drying the soil sample inside;

[0066] S5, start the motor 121, the motor 121 drives the corresponding cam 122 to rotate, the cam 122 hits the corresponding sliding frame 22 above, so that the sliding frame 22 slides up, and the elastic member 1 23 is deformed. As the bottom sliding frame 22 moves up, it synchronously pushes the top frame 42 above it to rise together, causing the elastic member 3 43 to deform. Then the movement of the top frame 42 will trigger another sliding frame 22 above it to slide up synchronously, and then the sliding frames 22 at the corresponding positions of each layer will operate synchronously, and the soil samples placed in the area will be gradually lifted up. As the dislocation cam 122 keeps hitting, the sliding frames 22 of each layer move at the same frequency and a certain interval, so as to continuously lift up and transfer the upper layer of dried soil and expose the lower layer of soil for uniform drying;

[0067] S6, start the extraction pump 62, and the high-temperature steam is sucked into the suction frame 61, so that the steam flows into the circulation frame 63, passes through the filter plate 64 and enters the molecular sieve to adsorb excess water, and then the dry gas flows to the exhaust frame 65, forming an effective steam circulation treatment;

[0068] S7, after drying is completed, the air pumps 71 on both sides are started to guide the hot air in the drying box 1 to flow into the guide frame 74, and then discharged through the air inlet pipe 73 and the air outlet pipe 72, so as to quickly reduce the temperature in the drying box 1;

[0069] S8. Finally, open the movable door 11 again, carefully take out the dried soil sample, and end the entire drying process.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A soil sample drying device, comprising: The drying box (1) has an opening at the front side, and movable doors (11) are hingedly provided on both sides of the opening of the drying box (1); The invention is characterized in that it further comprises: a bottom plate (12) arranged at the inner bottom of the drying box (1), the bottom plate (12) being symmetrically provided with slots in the front-rear direction, two motors (121) adapted to the slot layout being embedded and mounted on the bottom plate (12), the output shafts of the motors (121) being respectively connected to coupling shafts arranged in the slots on the same side, and cams (122) being arranged on the coupling shafts at staggered intervals; There are at least two placement frames (2) stacked on a bottom plate (12) for placing soil samples to be dried. Connecting plates (21) matching the number of cams (122) are arranged between the left and right inner walls of the placement frames (2). Sliding frames (22) are slidably arranged on the connecting plates (21). The bottom sliding frame (22) contacts and cooperates with the cam (122) directly below, and adjacent sliding frames (22) are fitted to each other for turning over the soil samples at intervals. An elastic member (23) is also arranged between the sliding frame (22) and the lower side of the corresponding connecting plate (21); The limiting frame (3) is hingedly arranged on the top rear side of the placement frame (2) and the two are identical in shape; The connecting plates (4) are provided in a plurality of groups. Two connecting plates (4) in the same group are respectively arranged on one side of the limiting frame (3), and the two connecting plates are inserted and engaged with the placement frame (2) directly above, so as to stack and place a plurality of placement frames (2). Support plates (41) whose number matches the number of the sliding frames (22) are respectively arranged at intervals on both sides of the top of the limiting frame (3). The support plates (41) are slidably provided with top frames (42) whose upper and lower ends are attached to and contacted with the adjacent sliding frames (22) so as to push the sliding frames (22) of each layer to move. Elastic members (43) are also arranged between the top frames (42) and the corresponding support plates (41).

2. A soil sample drying device according to claim 1, characterized in that: Both sides of the lower part of each placement frame (2) are respectively provided with outwardly extending protruding plates, and the upper end surface of the connecting plate (4) is correspondingly provided with a groove structure matching the protruding plates, so that the protruding plates can be embedded in the corresponding grooves to form an inserted snap-fit ​​connection between the placement frame (2) and the corresponding connecting plate (4).

3. A soil sample drying device according to claim 2, characterized in that: A guide sleeve (31) is provided on the front side of the placement frame (2), an insertion rod (32) is penetrated and slidably provided on the guide sleeve (31), and a second elastic member (33) is provided between the insertion rod (32) and the corresponding guide sleeve (31). A locking plate (34) which is plugged and matched with the adjacent insertion rod (32) is also provided on the front side of the limit frame (3) to fix the position of the limit frame (3).

4. A soil sample drying device according to claim 3, characterized in that: A fixing mechanism (5) with a symmetrical layout is also provided on the bottom plate (12) for fixing the position of the bottom layer placement frame (2). The fixing mechanism (5) comprises push plates (51) symmetrically slidably penetrated on both sides of the bottom plate (12). The push plates (51) are in contact with the movable door (11) on the same side. A sliding block (52) is symmetrically slidably provided on the push plates (51) and is also slidably matched with the bottom plate (12). The sliding block (52) is in contact with the bottom layer placement frame (2). The bottom layer placing frame (2) is matched to fix the positions of both sides of the bottom layer placing frame (2). Four elastic members (54) are arranged between the end of the sliding block (52) and the inner wall of the bottom plate (12). A through groove in the left and right directions is opened in the middle of the sliding block (52). A longitudinal connecting rod (53) is arranged in each through groove. The push plate (51) is symmetrically provided with an oblique groove (511) adapted to the layout of the sliding block (52). The connecting rod (53) is slidably embedded in the adjacent oblique groove (511).

5. A soil sample drying device according to claim 4, characterized in that: Both sides of the placement frame (2) are respectively provided with slots (24) adapted to the layout of the sliding block (52) on the same side, and the slots (24) are adapted to the ends of the corresponding sliding blocks (52) so that the sliding blocks (52) are pressed against the corresponding slots (24) to fix the position of the placement frame (2).

6. A soil sample drying device according to claim 5, characterized in that: The drying box (1) is provided with a separation mechanism (6) for removing excess moisture from the steam. The separation mechanism (6) comprises an air intake frame (61) and an air exhaust frame (65) respectively connected to one side of the drying box (1). A circulation frame (63) having one end connected to the air intake frame (61) is provided at the rear of the drying box (1). Filter plates (64) for facilitating steam circulation and molecular sieves located between the filter plates (64) on both sides are symmetrically arranged in the circulation frame (63). An extraction pump (62) is also installed at one side of the rear of the drying box (1). The air inlet of the extraction pump (62) is connected to the circulation frame (63), while the air outlet of the extraction pump (62) is connected to the air exhaust frame (65).

7. A soil sample drying device according to claim 6, characterized in that: The drying box (1) is also provided with a flow guiding mechanism (7), which comprises an air pump (71) symmetrically arranged on the side of the drying box (1), and a flow guiding frame (74) is also arranged at the opening of the drying box (1), the side of the flow guiding frame (74) is connected to the air inlet of the air pump (71) on the same side through an air inlet pipe (73), and the air outlet of the air pump (71) is connected to an air outlet pipe (72) connected to the drying box (1).

8. The soil sample drying device according to claim 7, characterized in that: The guide frame (74) is in a semi-enclosed structure, so that the guide frame (74) is continuously arranged along the left inner wall, the right inner wall and the top inner wall of the drying box (1).

9. The method for using the soil sample drying device according to claim 8, characterized in that: The following steps are involved: S1. Lay the soil sample on each placement frame (2), then rotate and lay down the limit frame (3), and insert the clamping plate (34) through the insertion rod (32) to fix the position of the limit frame (3) and the placement frame (2), so that the limit frame (3) and the corresponding placement frame (2) form a whole, and then insert the loaded placement frames (2) one by one into the connecting plates (4) on both sides of the next layer of limit frames (3) to achieve a stable clamping connection, and so on, until each layer of placement frames (2) is stacked; S2, opening the movable door (11), the push plate (51) is released from the contact restriction, the elastic member 4 (54) is reset, and the sliding blocks (52) on both sides are urged to move away from each other along the inclined groove (511), and then the stacked placement frame (2) is placed on the bottom plate (12) in the drying box (1), so that the placement frame (2) is located between the sliding blocks (52) on both sides, and the positions of the card slots (24) on both sides of the bottom layer and the sliding blocks (52) are calibrated; S3, after placement is completed, the movable door (11) is closed, and at the same time, the movable door (11) pushes the push plate (51) to move backward, and under the action of the inclined groove (511), the sliding blocks (52) on both sides are moved inward and embedded in the card slots (24) of the bottom placement frame (2), thereby fixing the position of the placement frame (2); S4, starting the drying box (1) to start drying the soil sample inside; S5, starting the motor (121), the motor (121) drives the corresponding cam (122) to rotate, the cam (122) hits the corresponding sliding frame (22) above, so that the sliding frame (22) slides up, and the elastic member 1 (23) is deformed. As the bottom sliding frame (22) moves up, it synchronously pushes the top frame (42) directly above it to rise together, causing the elastic member 3 (43) to deform. Then the movement of the top frame (42) will trigger another sliding frame (22) directly above it to slide up synchronously, and then the sliding frames (22) at corresponding positions of each layer will operate synchronously, and the soil samples placed in the area will be gradually lifted up. As the offset cam (122) continues to hit, the sliding frames (22) of each layer move at the same frequency and a certain interval, so that the upper layer of dried soil is continuously lifted up and transferred, and the lower layer of soil is exposed for uniform drying; S6, start the extraction pump (62), and the high-temperature steam is sucked into the suction frame (61), so that the steam flows into the circulation frame (63), passes through the filter plate (64) and enters the molecular sieve to adsorb excess water, and then the dry gas flows to the exhaust frame (65), forming an effective steam circulation treatment; S7, after drying is completed, the air pumps (71) on both sides are started to guide the hot air in the drying box (1) to flow into the guide frame (74), and then discharged through the air inlet pipe (73) and the air outlet pipe (72), so as to quickly reduce the temperature in the drying box (1); S8. Finally, the movable door (11) is opened again, and the dried soil sample is carefully taken out, thus completing the entire drying process.

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