Soil sample dissolving device

Abstract

The soil sample dissolving device comprises a dissolving shell, a mounting seat, a rotating disc and a motor, a dissolving cavity is formed between the dissolving shell and the mounting seat; the mounting seat is provided with a first inclined surface; a supporting plate extends from the mounting seat, and a screening cavity is formed among the supporting plate, the mounting seat and the inner wall of the dissolving shell; screen holes are evenly distributed in the supporting plate. Rotating arms attached to the first inclined surfaces are uniformly distributed on the rotating disc in the circumferential direction, and rolling assemblies are arranged at the tail ends of the rotating arms; a driving piece is arranged on the inner wall of the dissolving shell; a driving sliding block is elastically and slidably arranged on the first inclined surface of the mounting seat in a penetrating manner; a second inclined surface is arranged on the top surface of the driving sliding block; a stirring roller is rotationally arranged on the mounting seat in the dissolving cavity; the stirring roller is in transmission connection with the driving sliding block, so that the stirring roller rotates back and forth when the driving sliding block slides up and down; the uniformity of the soil sample is improved, so that the soil sample is dissolved, the soil sample is fully dissolved in the extraction solvent, and the accuracy of a detection result and the extraction efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, in particular to a soil sample dissolving device. Background Art

[0002] In the field of environmental testing, the detection of VOC (volatile organic compounds) in soil is of great significance. VOC in soil may come from various sources such as industrial pollution and the use of agricultural chemicals. Its accurate detection helps to evaluate soil quality and pollution status. In the existing soil VOC detection technology, the soil matrix is ​​a key factor affecting the accuracy of detection. In order to avoid interference from the soil matrix, dissolving soil samples is a common method.

[0003] However, there are many problems in the soil dissolution process. On the one hand, soil samples are often uneven. For example, the collected soil samples may contain particles of different sizes and components of different textures, which results in the soil components in some areas not being able to contact the extraction solvent evenly during the dissolution process. If the local soil solute concentration is too high or too low, it will affect the accuracy of the final test results.

[0004] On the other hand, the incomplete reaction between the sample and the extraction solvent is also a major challenge. Sufficient time and suitable reaction conditions are required between the extraction solvent and the VOC in the soil to achieve effective extraction of the solute. However, in actual operation, due to the complex structure of the soil, the VOC inside it may be adsorbed or wrapped by soil particles, and it is difficult for the solvent to fully penetrate into the soil and fully react with the VOC. This not only reduces the extraction efficiency of the solute, but also makes the VOC content data obtained from subsequent tests lower than the actual value, which cannot truly reflect the pollution status of the soil, and thus affects the accurate assessment of the soil environment and the formulation of corresponding control measures.

[0005] Therefore, there is an urgent need to improve the soil dissolution process to enhance the accuracy of soil VOC detection. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a soil sample dissolving device to improve the uniformity of the soil sample so as to facilitate the dissolution of the soil sample and enable the soil sample to be fully dissolved in the extraction solvent, thereby improving the accuracy of the test results and the extraction efficiency.

[0007] To achieve the above-mentioned object, the specific scheme of the present invention is as follows: A soil sample dissolving device comprises a dissolving shell, a mounting seat arranged in the dissolving shell, a rotating disk rotating on the mounting seat, and a motor for driving the rotating disk to rotate; A dissolution cavity is formed between the dissolution shell and the mounting seat; the mounting seat is provided with a first inclined surface; a support plate is extended from the outer periphery of the mounting seat, and a screening cavity is formed between the support plate, the mounting seat and the inner wall of the dissolution shell; sieve holes are evenly distributed on the support plate; the rotating disk is evenly distributed with rotating arms abutting against the first inclined surface along the circumferential direction, and a rolling assembly is provided at the end of the rotating arm; a driving member is provided on the inner wall of the dissolution shell for driving the rolling assembly to roll and crush the soil sample in the screening cavity during the rotation process; The mounting seat is elastically slidably provided with a driving slider on the first inclined surface, and a second inclined surface is provided on the top surface of the driving slider; the mounting seat is provided with a stirring roller rotating in the dissolving chamber; the stirring roller is transmission-connected with the driving slider so that the stirring roller reciprocates when the driving slider slides up and down.

[0008] The present invention is further configured such that the driving member is a gear ring, and the rolling assembly includes a rolling arm that is lifted and lowered on the rotating arm, a rolling roller that is arranged on the rolling arm, and a transmission shaft that is rotatably arranged on the rotating arm; the rolling arm is provided with an avoidance hole, the transmission shaft passes through the avoidance hole, one end of the transmission shaft is provided with a gear structure that meshes with the gear ring, and the other end of the transmission shaft is provided with a half-gear structure, and the rolling arm is provided with a tooth structure that can mesh with the half-gear structure in the avoidance hole.

[0009] The present invention is further configured such that a tension spring is connected between the rolling arm and the rotating arm.

[0010] The present invention is further configured such that driving sliders are evenly distributed on the mounting seat along the circumferential direction, and stirring rollers corresponding to the driving sliders are evenly distributed in the dissolving chamber along the circumferential direction of the mounting seat.

[0011] The present invention is further configured such that a receiving hole is formed through the mounting seat corresponding to each driving slider, the driving slider is slidably disposed in the receiving hole, and a second inclined surface is disposed on the top surface of the driving slider; a first spring is connected between the driving slider and the mounting seat; The driving slider is provided with a driving shaft, and the driving shaft passes through the accommodating hole and is transmission-connected with the corresponding stirring roller.

[0012] The present invention is further configured such that the stirring roller is provided with a first accommodating groove, and a first spiral groove is provided on the groove wall of the first accommodating groove; a first bayonet is convexly provided on the outer wall of the driving shaft, and the first bayonet is movably embedded in the first spiral groove.

[0013] The present invention is further configured such that a mounting seat is rotatably provided with a ratchet and a ratchet pawl for one-way locking the ratchet; a shifting block for driving the ratchet to rotate in one direction is elastically provided on the stirring roller; a liquid outlet is provided at the bottom of the dissolving shell; a control valve is slidably provided at the liquid outlet of the dissolving shell, the control valve has a connecting shaft, a second spring is connected to the middle part of the connecting shaft and the ratchet, and the connecting shaft is transmission-connected to the middle part of the ratchet, so that the control valve controls the opening and closing of the liquid outlet through the cooperation of the ratchet and the second spring.

[0014] The present invention is further configured such that a second accommodating groove is provided in the middle of the ratchet wheel, and a guide track is provided on the inner wall of the second accommodating groove; the guide track comprises an arc segment, a second spiral groove and a vertical segment, the lower end of the second spiral groove is connected to one end of the arc segment, the upper end of the vertical segment is connected to the upper end of the second spiral groove, and the lower end of the second spiral groove is connected to the other end of the arc segment; The second spring is located in the second accommodating groove, and the connecting shaft is elastically provided with a second bayonet in the second accommodating groove; the second bayonet is movably embedded in the guide track; initially, the second bayonet is located in the arc segment.

[0015] The present invention is further configured such that a dissolving disk is provided at the inner bottom of the dissolving shell, and a filter screen is provided on the dissolving disk; a through hole is provided at a position in the middle of the dissolving disk corresponding to the liquid outlet, and the control valve is penetrated in the through hole.

[0016] The present invention is further configured as follows: a guide cover is rotatably provided on the top of the dissolving shell; the guide cover has a guide opening; the middle part of the guide cover is fixedly connected to the rotating disk; the guide cover is provided with a shielding plate extending vertically downward; the rotating arm has a horizontal section; the rolling assembly is arranged on the horizontal section; and the shielding plate abuts against the surface of the horizontal section of the rotating arm.

[0017] The beneficial effects of the present invention are as follows: the present invention drives each rolling assembly to cooperate with the driving member during the rotation process through the rotating arm, so that the rolling assembly rolls and crushes the soil sample in the screening chamber, so that the soil sample can fully pass through the sieve hole and fall into the dissolution chamber, thereby improving the uniformity of the soil sample and facilitating the dissolution of the soil sample. At the same time, the driving slider makes intermittent reciprocating rotation during the rotation of the rotating arm, so that the solution in the dissolution chamber is fully stirred, so that the soil sample is fully dissolved in the extraction solvent, thereby improving the accuracy of the test results and the extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 is a schematic structural diagram of a hidden guide cover of the present invention; Figure 4 It is a schematic diagram of the structure in which the driving slider and the stirring roller are arranged on the mounting seat of the present invention; Figure 5 is a cross-sectional schematic diagram of the rolling assembly of the present invention; Figure 6 It is a cross-sectional schematic diagram of the cooperation between the driving slider and the stirring roller of the present invention; Figure 7 It is a structural schematic diagram of the driving slider of the present invention; Figure 8 It is a structural schematic diagram of the stirring roller of the present invention; Fig. 9 It is a cross-sectional schematic diagram of the ratchet and the control valve of the present invention; Fig.10 is a cross-sectional schematic diagram of the ratchet of the present invention; Explanation of reference numerals: 1. dissolving shell; 11. gear ring; 12. liquid outlet; 13. control valve; 131. connecting shaft; 132. second bayonet; 133. third spring; 14. second spring; 15. dissolving disk; 16. filter screen; 2. mounting seat; 21. first inclined plane; 22. support plate; 23. sieve hole; 24. accommodating hole; 3. rotating disk; 31. rotating arm; 311. horizontal section; 32. guide cover; 321. guide port; 322. shielding plate; 4. motor; 51. rolling arm; 511. gear Tooth structure; 52, rolling roller; 53, transmission shaft; 531, gear structure; 532, half gear structure; 54, tension spring; 6, driving slider; 61, second inclined surface; 62, driving shaft; 63, first latch; 64, first spring; 7, stirring roller; 71, first receiving groove; 72, first spiral groove; 73, shift block; 74, fourth spring; 8, ratchet; 81, second receiving groove; 82, circular arc segment; 83, second spiral groove; 84, vertical segment; 85, pawl; 10, dissolving chamber; 20, screening chamber. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0020] like Figures 1 to 10 As shown, a soil sample dissolving device described in this embodiment includes a dissolving shell 1 which is roughly cylindrical, and the top of the dissolving shell 1 is open; it also includes a mounting seat 2 installed in the dissolving shell 1, a rotating disk 3 rotatably arranged on the mounting seat 2, and a motor 4 for driving the rotating disk 3 to rotate; the motor 4 is embedded in the top of the mounting seat 2; the output end of the motor 4 is connected to the center of the rotating disk 3; the mounting seat 2 is roughly in the shape of a frustum; A dissolution chamber 10 is formed between the dissolution shell 1 and the mounting seat 2; the conical surface of the mounting seat 2 is a first inclined surface 21; a support plate 22 is extended from the outer periphery of the mounting seat 2, and a screening chamber 20 is formed between the support plate 22, the mounting seat 2 and the inner wall of the dissolution shell 1; sieve holes 23 are evenly distributed on the support plate 22; the rotating disk 3 is evenly distributed with rotating arms 31 in contact with the first inclined surface 21 along the circumferential direction, and a rolling assembly is provided at the end of the rotating arm 31; a driving member is provided on the inner wall of the dissolution shell 1 for driving the rolling assembly to roll and crush the soil sample in the screening chamber 20 during the rotation process; The mounting seat 2 is elastically slidably provided with a driving slider 6 on the first inclined surface 21, and the top surface of the driving slider 6 is provided with a second inclined surface 61; the mounting seat 2 is provided with a stirring roller 7 that rotates in the dissolution chamber 10; the stirring roller 7 is transmission-connected with the driving slider 6 so that the stirring roller 7 rotates back and forth when the driving slider 6 slides up and down.

[0021] Specifically, when the soil sample dissolution device described in this embodiment is actually used, the soil sample is placed in the dissolution shell 1, and the soil sample rolls along the first inclined surface 21 of the mounting seat 2 toward the screening chamber 20. After the soil sample falls into the screening chamber 20, the tiny particles directly pass through the sieve holes 23 and fall into the dissolution chamber 10, while the larger particles remain in the screening chamber 20 and cannot pass through the sieve holes 23 and fall into the dissolution chamber 10. The motor 4 drives the rotating disk 3 to rotate, and the rotating disk 3 drives each rotating arm 31 to rotate. Since the rotating arm 31 is in contact with the first inclined surface 21, the rotating arm 31 scrapes the first inclined surface 21 to prevent the soil sample from adhering to the first inclined surface 21 and not falling, thereby affecting the accuracy of the detection result. During the rotation process, the rotating arm 31 When the rotating arm 31 contacts the second inclined surface 61 of the driving slider 6, the rotating arm 31 gradually applies downward pressure to the driving slider 6, so that the driving slider 6 slides downward. When the driving slider 6 slides downward, the driving slider 6 drives the stirring roller 7 to rotate. When the rotating arm 31 gradually releases the downward pressure on the driving slider 6, the driving slider 6 gradually slides upward. At this time, the driving slider 6 drives the stirring roller 7 to rotate in the opposite direction. In this way, when the next rotating arm 31 squeezes the driving slider 6 to slide downward, the driving slider 6 slides downward again. In this way, under the action of each rotating arm 31, each stirring roller 7 intermittently reciprocates. In this way, the solution in the dissolution chamber 10 is fully stirred by the stirring roller 7, so that the soil sample and the extraction solvent react fully. At the same time, the rotating arm 31 drives the rolling assembly to rotate during the rotation process. The rolling assembly cooperates with the driving member during the rotation process to roll and crush the larger particles of the soil sample in the screening chamber 20, so that the soil sample can fully pass through the sieve hole 23 and fall into the dissolution chamber 10.

[0022] In this embodiment, the rotating arm 31 drives each crushing assembly to cooperate with the driving member during the rotation process, so that the crushing assembly crushes and crushes the soil sample in the screening chamber 20, so that the soil sample can fully pass through the sieve hole 23 and fall into the dissolution chamber 10, thereby improving the uniformity of the soil sample and facilitating the dissolution of the soil sample. At the same time, the driving slider 6 makes intermittent reciprocating rotation during the rotation of the rotating arm 31, so that the solution in the dissolution chamber 10 is fully stirred, so that the soil sample is dissolved in the extraction solvent, thereby improving the accuracy of the detection result and the extraction efficiency.

[0023] like Figure 1 , Figure 3 and Figure 5As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the driving member is the ring gear 11, and the rolling assembly includes a rolling arm 51 that is lifted and lowered on the rotating arm 31, a rolling roller 52 that is arranged on the rolling arm 51, and a transmission shaft 53 that is rotatably arranged on the rotating arm 31; the rolling arm 51 is provided with an avoidance hole, and the transmission shaft 53 passes through the avoidance hole, one end of the transmission shaft 53 is provided with a gear structure 531 that meshes with the ring gear 11, and the other end of the transmission shaft 53 is provided with a half gear structure 532531, and the rolling arm 51 is provided with a tooth structure 511 that can mesh with the half gear structure 532531 in the avoidance hole.

[0024] Specifically, in actual application, the rotating arm 31 drives the rolling assembly to rotate, and the gear structure 531 of the transmission shaft 53 cooperates with the gear ring 11 to rotate the transmission shaft 53. During the rotation of the transmission shaft 53, when the half gear structure 532531 of the transmission shaft 53 is engaged with the tooth structure 511 of the rolling arm 51, the transmission shaft 53 drives the rolling arm 51 and the rolling roller 52 to move upward. When the half gear structure 532531 of the transmission shaft 53 is disengaged from the tooth structure 511 of the rolling arm 51, the transmission shaft 53 drives the rolling arm 51 and the rolling roller 52 to move upward. When combined, the rolling arm 51 and the rolling roller 52 move downward under their own weight, thereby crushing the larger particles of soil sample in the screening chamber 20. As the transmission shaft 53 rotates, the rolling arm 51 drives the rolling roller 52 to move up and down reciprocatingly, thereby continuously crushing the larger particles of soil sample in the screening chamber 20 under the drive of the rotating arm 31, so as to ensure the uniformity of the soil sample and the soil sample can fully fall into the dissolution chamber 10, so as to ensure the accuracy of the test results.

[0025] like Figure 1 , Figure 3 and Figure 5 As shown, in the soil sample dissolving device described in this embodiment, in some embodiments, a tension spring 54 is further connected between the rolling arm 51 and the rotating arm 31. In this embodiment, when the rolling arm 51 moves upward, the tension spring 54 is stretched, and when the rolling arm 51 moves downward, the tension spring 54 recovers its deformation and applies a downward pulling force to the rolling arm 51, so that the rolling arm 51 drives the rolling roller 52 to move downward quickly, so as to fully roll and crush the soil sample, and the rolling and crushing effect is better.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the mounting seat 2 is evenly distributed with driving sliders 6 along the circumferential direction, and the mounting seat 2 is evenly distributed with stirring rollers 7 corresponding to the driving sliders 6 along the circumferential direction in the dissolution chamber 10. In this embodiment, by providing a plurality of driving sliders 6 and a plurality of stirring rollers 7, the solution in the dissolution chamber 10 is stirred more fully, and the soil sample is more fully dissolved in the extraction solvent, so as to improve the accuracy of the detection result.

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the mounting seat 2 is provided with a accommodating hole 24 corresponding to each driving slider 6, the driving slider 6 is slidably arranged in the accommodating hole 24, and a second inclined surface 61 is arranged on the top surface of the driving slider 6; a first spring 64 is connected between the driving slider 6 and the mounting seat 2; the driving slider 6 is provided with a driving shaft 62, and the driving shaft 62 is connected to the corresponding stirring roller 7 through the accommodating hole 24.

[0028] Specifically, the present embodiment provides an accommodating hole 24 to facilitate the installation of the driving slider 6. When the rotating arm 31 contacts the second inclined surface 61 of the driving slider 6, the rotating arm 31 applies downward pressure to the driving slider 6, the first spring 64 is compressed, and the driving slider 6 drives the stirring roller 7 to rotate through the driving shaft 62. When the rotating arm 31 gradually releases the downward pressure on the driving slider 6, the first spring 64 is reset to move the driving slider 6 upward, thereby driving the stirring roller 7 to rotate in the opposite direction. In this way, the solution in the dissolution chamber 10 is fully stirred through the intermittent reciprocating rotation of the stirring roller 7, thereby accelerating the dissolution of the soil sample and improving the extraction efficiency.

[0029] like Figure 1 , Figure 4 , Figures 6 to 8 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the stirring roller 7 is provided with a first accommodating groove 71, and a first spiral groove 72 is provided on the groove wall of the first accommodating groove 71; a first bayonet 63 is protrudingly provided on the outer wall of the driving shaft 62, and the first bayonet 63 is movably embedded in the first spiral groove 72.

[0030] Specifically, when the driving slider 6 slides downward, the first pin 63 moves downward along the trajectory of the first spiral groove 72. At this time, the driving shaft 62 drives the stirring roller 7 to rotate through the cooperation of the first pin 63 and the first spiral groove 72; when the driving slider 6 slides upward, the first pin 63 moves upward along the trajectory of the first spiral groove 72. At this time, the driving shaft 62 drives the stirring roller 7 to rotate in the opposite direction through the cooperation of the first pin 63 and the first spiral groove 72, thereby realizing the reciprocating rotation of the stirring roller 7.

[0031] like Figure 1 , Figure 4 , Fig. 9 and Fig.10As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the mounting seat 2 is rotatably provided with a ratchet 8 and a pawl 85 for one-way locking the ratchet 8 in the dissolution chamber 10; the stirring roller 7 is elastically provided with a shifting block 73 for shifting the ratchet 8 to rotate in one direction; a liquid outlet 12 is provided at the bottom of the dissolution shell 1; a control valve 13 is slidably provided at the liquid outlet 12 of the dissolution shell 1, and the control valve 13 has a connecting shaft 131, and the connecting shaft 131 is connected to the middle part of the ratchet 8 with a second spring 14, and the connecting shaft 131 is transmission-connected to the middle part of the ratchet 8, so that the control valve 13 controls the opening and closing of the liquid outlet 12 through the cooperation of the ratchet 8 and the second spring 14.

[0032] like Fig. 9 and Fig.10 As shown, in this embodiment, a second accommodating groove 81 is provided in the middle of the ratchet 8, and a guide track is provided on the inner wall of the second accommodating groove 81; the guide track includes an arc segment 82, a second spiral groove 83 and a vertical segment 84, the lower end of the second spiral groove 83 is connected to one end of the arc segment 82, the upper end of the vertical segment 84 is connected to the upper end of the second spiral groove 83, and the lower end of the second spiral groove 83 is connected to the other end of the arc segment 82; the second spring 14 is located in the second accommodating groove 81, and the connecting shaft 131 is elastically provided with a second bayonet 132 in the second accommodating groove 81; the second bayonet 132 is movably embedded in the guide track; initially, the second bayonet 132 is located in the arc segment 82.

[0033] like Fig. 9 As shown, in this embodiment, the connecting shaft 131 is provided with a third receiving groove, a third spring 133 is provided in the third receiving groove, and the second latch 132 is movably inserted into the third receiving groove and abuts against the third spring 133 .

[0034] Specifically, when the stirring roller 7 rotates forward, the stirring roller 7 is meshed with the ratchet 8 through the shifting block 73, and the ratchet 8 is rotated, and the second latch 132 moves along the trajectory of the arc segment 82. When the stirring roller 7 rotates reversely, the ratchet 8 will not rotate reversely under the locking action of the pawl 85, and the shifting block 73 is squeezed by the ratchet 8 and retracts. Until the stirring roller 7 rotates forward again, the stirring roller 7 drives the ratchet 8 to rotate again through the shifting block 73. In this way, each stirring roller 7 intermittently shifts the ratchet 8 unidirectionally rotates. With the unidirectional rotation of the ratchet 8, the second bayonet 132 enters the second spiral groove 83 along the arc segment 82. At this time, the ratchet 8 drives the control valve 13 to move upward through the connecting shaft 131 under the cooperation of the second bayonet 132 and the second spiral groove 83. The second spring 14 is compressed, so that the control valve 13 opens the liquid outlet 12. At this time, the dissolved liquid after the soil sample in the dissolution chamber 10 is dissolved is discharged from the dissolution chamber 10 through the liquid outlet 12 to perform VOC detection. When the second pin 132 enters the vertical section 84 along the second spiral groove 83, the second spring 14 is reset and pushes the control valve 13 to move downward through the connecting shaft 131. The second pin 132 moves downward along the vertical section 84 until the second pin 132 has the vertical section 84 return to the arc section 82 again. At this time, the control valve 13 closes the liquid outlet 12, so that the quantitative discharge of the dissolved liquid can be achieved.

[0035] like Figure 6 As shown, in this embodiment, a fourth accommodating groove is recessed on the outer wall of the stirring roller 7 , a fourth spring 74 is arranged in the fourth accommodating groove, and the shifting block 73 movably extends into the fourth accommodating groove and abuts against the fourth spring 74 .

[0036] like Figure 1 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, a dissolution disc 15 is provided at the inner bottom of the dissolution shell 1, and a filter screen 16 is provided on the dissolution disc 15; a through hole is provided at the middle of the dissolution disc 15 corresponding to the liquid outlet 12, and a control valve 13 is passed through the through hole. In this embodiment, the dissolution disc 15 is provided to carry the dissolution liquid, and the dissolution liquid is filtered through the filter screen 16 to filter out impurities or foreign matter mixed in the soil sample.

[0037] like Figure 1 and Figure 2 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, a guide cover 32 is rotatably provided on the top of the dissolution shell 1; the guide cover 32 has a guide port 321; the middle part of the guide cover 32 is fixedly connected to the rotating disk 3; the guide cover 32 is provided with a shielding plate 322 extending vertically downward; the rotating arm 31 has a horizontal section 311; the rolling assembly is arranged on the horizontal section 311; the shielding plate 322 abuts against the surface of the horizontal section 311 of the rotating arm 31.

[0038] In this embodiment, the guide opening 321 of the guide cover 32 is provided to guide the soil sample so that the soil sample can fully fall into the screening chamber 20 along the first inclined surface 21, and the guide cover 32 is driven to rotate by the rotating disk 3 so that part of the soil sample remaining on the guide cover 32 can be thrown off; By providing the shielding plate 322 to abut against the horizontal section 311 of the rotating arm 31 , the soil sample is effectively prevented from falling onto the rolling assembly and the gear ring 11 , so that the soil sample can fully enter the screening chamber 20 .

[0039] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A soil sample dissolution device, characterized in that: It includes a dissolving shell, a mounting seat arranged in the dissolving shell, a rotating disk rotating on the mounting seat, and a motor for driving the rotating disk to rotate; A dissolution cavity is formed between the dissolution shell and the mounting seat; the mounting seat is provided with a first inclined surface; a support plate is extended from the outer periphery of the mounting seat, and a screening cavity is formed between the support plate, the mounting seat and the inner wall of the dissolution shell; sieve holes are evenly distributed on the support plate; the rotating disk is evenly distributed with rotating arms abutting against the first inclined surface along the circumferential direction, and a rolling assembly is provided at the end of the rotating arm; a driving member is provided on the inner wall of the dissolution shell for driving the rolling assembly to roll and crush the soil sample in the screening cavity during the rotation process; The mounting seat is elastically slidably provided with a driving slider on the first inclined surface, and a second inclined surface is provided on the top surface of the driving slider; the mounting seat is provided with a stirring roller rotating in the dissolving chamber; the stirring roller is transmission-connected with the driving slider so that the stirring roller reciprocates when the driving slider slides up and down.

2. A soil sample dissolving device according to claim 1, characterized in that: The driving part is a gear ring, and the rolling assembly includes a rolling arm lifted and lowered on the rotating arm, a rolling roller arranged on the rolling arm, and a transmission shaft rotatably arranged on the rotating arm; the rolling arm is provided with an avoidance hole, the transmission shaft passes through the avoidance hole, one end of the transmission shaft is provided with a gear structure meshing with the gear ring, and the other end of the transmission shaft is provided with a half-gear structure, and the rolling arm is provided with a tooth structure in the avoidance hole that can mesh with the half-gear structure.

3. A soil sample dissolving device according to claim 2, characterized in that: A tension spring is also connected between the rolling arm and the rotating arm.

4. A soil sample dissolving device according to claim 1, characterized in that: The mounting seat is evenly provided with driving sliders along the circumferential direction, and the mounting seat is evenly provided with stirring rollers corresponding to the driving sliders along the circumferential direction in the dissolving chamber.

5. A soil sample dissolving device according to claim 4, characterized in that: The mounting seat is provided with a receiving hole corresponding to each driving slider, the driving slider is slidably arranged in the receiving hole, and a second inclined surface is arranged on the top surface of the driving slider; a first spring is connected between the driving slider and the mounting seat; The driving slider is provided with a driving shaft, and the driving shaft passes through the accommodating hole and is transmission-connected with the corresponding stirring roller.

6. A soil sample dissolving device according to claim 5, characterized in that: The stirring roller is provided with a first accommodating groove, and a first spiral groove is provided on the groove wall of the first accommodating groove; a first bayonet is convexly provided on the outer wall of the driving shaft, and the first bayonet is movably embedded in the first spiral groove.

7. A soil sample dissolving device according to claim 1, characterized in that: The mounting seat is rotatable in the dissolving chamber and is provided with a ratchet and a pawl for unidirectionally locking the ratchet; the stirring roller is elastically provided with a shifting block for driving the ratchet to rotate unidirectionally; a liquid outlet is provided at the bottom of the dissolving shell; a control valve is slidably provided at the liquid outlet of the dissolving shell, and the control valve has a connecting shaft, and a second spring is connected to the middle part of the connecting shaft and the ratchet, and the connecting shaft is transmission-connected to the middle part of the ratchet, so that the control valve controls the opening and closing of the liquid outlet through the cooperation of the ratchet and the second spring.

8. A soil sample dissolving device according to claim 7, characterized in that: A second accommodating groove is provided in the middle of the ratchet wheel, and a guide track is provided on the inner wall of the second accommodating groove; the guide track includes an arc segment, a second spiral groove and a vertical segment, the lower end of the second spiral groove is connected to one end of the arc segment, the upper end of the vertical segment is connected to the upper end of the second spiral groove, and the lower end of the second spiral groove is connected to the other end of the arc segment; The second spring is located in the second accommodating groove, and the connecting shaft is elastically provided with a second bayonet in the second accommodating groove; the second bayonet is movably embedded in the guide track; initially, the second bayonet is located in the arc segment.

9. A soil sample dissolving device according to claim 7, characterized in that: A dissolving disc is arranged at the inner bottom of the dissolving shell, and a filter screen is arranged on the dissolving disc; a through hole is arranged at a position corresponding to the liquid outlet in the middle of the dissolving disc, and a control valve is arranged in the through hole.

10. The soil sample dissolving device according to claim 1, characterized in that: A guide cover is rotatably provided on the top of the dissolving shell; the guide cover has a guide opening; the middle of the guide cover is fixedly connected to the rotating disk; the guide cover is provided with a shielding plate extending vertically downward; the rotating arm has a horizontal section; the rolling assembly is arranged on the horizontal section; the shielding plate abuts against the surface of the horizontal section of the rotating arm.

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