Soil sample dissolution device

Abstract

The present invention provides a soil sample dissolving device, comprising a dissolving shell, a mounting seat, a rotating disk and a motor; a dissolving chamber is formed between the dissolving shell and the mounting seat; the mounting seat is provided with a first inclined surface; a support plate is extended from the mounting seat, and a screening chamber is formed between the support plate, the mounting seat and the inner wall of the dissolving shell; the support plate is evenly distributed with sieve holes; the rotating disk is evenly distributed with rotating arms that are in contact with the first inclined surface along the circumference, and a rolling assembly is provided at the end of the rotating arm; a driving member is provided on the inner wall of the dissolving shell; a driving slider is elastically slidably penetrated on the first inclined surface of the mounting seat, and a second inclined surface is provided on the top surface of the driving slider; a stirring roller is provided on the mounting seat for rotation in the dissolving chamber; the stirring roller is transmission-connected to the driving slider so that the stirring roller rotates back and forth when the driving slider slides up and down; the uniformity of the soil sample is improved to facilitate the dissolution of the soil sample, so that the soil sample is fully dissolved in the extraction solvent, thereby improving the accuracy of the detection result and the extraction efficiency.

Description

Technical Field

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

[0002] In the field of environmental monitoring, the detection of VOCs (volatile organic compounds) in soil is of great significance. VOCs in soil can come from a variety of sources, including industrial pollution and the use of agricultural chemicals. Accurate detection helps assess soil quality and contamination. In existing soil VOC detection technologies, the soil matrix is a key factor affecting detection accuracy. To avoid soil matrix interference, dissolving soil samples is a common method.

[0003] However, the soil dissolution process presents numerous challenges. For one thing, soil samples can often be uneven. For example, a collected soil sample may contain particles of varying sizes and textures. This can lead to uneven contact of some areas with the extraction solvent during the dissolution process. If localized soil solute concentrations are too high or too low, the accuracy of the final test results can be compromised.

[0004] Another challenge is insufficient reaction between the sample and the extraction solvent. The extraction solvent and the VOCs in the soil require sufficient time and suitable reaction conditions to effectively extract the solutes. However, due to the complex structure of the soil, VOCs within it may be adsorbed or trapped by soil particles, making it difficult for the solvent to fully penetrate the soil and react with the VOCs. This not only reduces the efficiency of solute extraction, but also causes the VOC content data obtained in subsequent testing to be lower than the actual value, failing to truly reflect the soil's contamination status, thereby affecting the accurate assessment of the soil environment and the formulation of appropriate remediation 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 dissolution 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 dissolution device includes a dissolution shell, a mounting seat provided in the dissolution shell, a rotating disk rotatably provided on the mounting seat, and a motor for driving the rotating disk to rotate;

[0008] A dissolution chamber is formed between the dissolution shell and the mounting seat; the mounting seat is provided with a first inclined surface; a support plate extends from the outer periphery of the mounting seat, and a screening chamber 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 along the circumference with rotating arms that abut against the first inclined surface, 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 chamber during rotation;

[0009] The mounting seat is elastically slidably provided with a driving slider on the first inclined surface, and the top surface of the driving slider is provided with a second inclined surface; the mounting seat is provided with a stirring roller that rotates in the dissolution chamber; the stirring roller is transmission-connected to the driving slider so that the stirring roller rotates back and forth when the driving slider slides up and down.

[0010] The present invention is further configured such that the driving member is a ring gear, 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 rotatable 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 engages with the ring gear, 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 engage with the half-gear structure.

[0011] The present invention is further configured such that a tension spring is connected between the rolling arm and the rotating arm.

[0012] The present invention is further configured such that driving sliders are uniformly distributed along the circumference of the mounting seat, and stirring rollers corresponding to the driving sliders are uniformly distributed along the circumference of the mounting seat in the dissolution chamber.

[0013] The present invention is further configured such 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 provided on the top surface of the driving slider; a first spring is connected between the driving slider and the mounting seat;

[0014] The driving slider is provided with a driving shaft, which passes through the accommodating hole and is transmission-connected with the corresponding stirring roller.

[0015] The present invention is further configured such that the stirring roller is provided with a first accommodating groove, a first spiral groove is provided on the groove wall of the first accommodating groove; a first bayonet is protrudingly provided on the outer wall of the driving shaft, and the first bayonet is movably embedded in the first spiral groove.

[0016] The present invention is further configured such that the mounting seat is provided with a ratchet and a pawl for one-way locking the ratchet when rotating in the dissolution chamber; a shift 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 dissolution shell; a control valve is provided slidingly at the liquid outlet of the dissolution 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 cooperation with the ratchet and the second spring.

[0017] 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 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;

[0018] 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.

[0019] 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 corresponding to the liquid outlet in the middle of the dissolving disk, and the control valve is passed through the through hole.

[0020] The present invention is further configured such that a guide cover is rotatably provided on the top of the dissolving shell; the guide cover has a guide port; 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 provided on the horizontal section; and the shielding plate abuts against the surface of the horizontal section of the rotating arm.

[0021] The beneficial effects of the present invention are as follows: the present invention drives each crushing assembly to cooperate with the driving member during the rotation process through the rotating arm, so that the crushing assembly crushes 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, by driving the slider to perform intermittent reciprocating rotation during the rotation of the rotating arm, 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

[0022] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the hidden guide cover of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the driving slider and the stirring roller arranged on the mounting base of the present invention;

[0026] Figure 5 is a schematic cross-sectional view of the rolling assembly of the present invention;

[0027] Figure 6 It is a cross-sectional schematic diagram of the cooperation between the driving slider and the stirring roller of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the driving slider of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the stirring roller of the present invention;

[0030] Figure 9 It is a cross-sectional schematic diagram of the ratchet and the control valve of the present invention;

[0031] Figure 10 is a schematic cross-sectional view of the ratchet of the present invention;

[0032] 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 base; 21. first inclined plane; 22. support plate; 23. sieve hole; 24. receiving hole; 3. rotating disk; 31. rotating arm; 311. horizontal section; 32. guide cover; 321. guide port; 322. shielding plate; 4. motor; 51. crushing arm; 511. gear Tooth structure; 52. Grinding 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 accommodating groove; 72. First spiral groove; 73. Shifting block; 74. Fourth spring; 8. Ratchet; 81. Second accommodating groove; 82. Circular arc segment; 83. Second spiral groove; 84. Vertical segment; 85. Ratchet; 10. Dissolving chamber; 20. Screening chamber. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0034] like Figures 1 to 10 As shown, the soil sample dissolution device described in this embodiment includes a dissolution shell 1 that is generally cylindrical and has an opening at the top; a mounting base 2 mounted in the dissolution shell 1, a rotating disk 3 that rotates on the mounting base 2, and a motor 4 for driving the rotating disk 3 to rotate; the motor 4 is embedded in the top of the mounting base 2; the output end of the motor 4 is connected to the center of the rotating disk 3; the mounting base 2 is generally truncated cone-shaped;

[0035] 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 extends 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 along the circumference with rotating arms 31 abutting against the first inclined surface 21, 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 rotation;

[0036] 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 to the driving slider 6 so that the stirring roller 7 rotates back and forth when the driving slider 6 slides up and down.

[0037] 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 test result. During the rotation process, the rotating arm 31 In the embodiment, 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, causing the driving slider 6 to slide 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. 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 rotates back and forth intermittently, so that the solution in the dissolution chamber 10 is fully stirred by the stirring roller 7, so that the soil sample and the extraction solvent fully react;

[0038] 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 part during the rotation process to crush the larger particles of 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.

[0039] 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 slider 6 is driven to perform intermittent reciprocating rotation during the rotation of the rotating arm 31, thereby fully stirring the solution in the dissolution chamber 10, so that the soil sample is dissolved in the extraction solvent, thereby improving the accuracy of the test results and the extraction efficiency.

[0040] like Figure 1 、 Figure 3 and Figure 5 As shown, in the soil sample dissolution device described in this embodiment, in some embodiments, the driving member is a 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 rotatable 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, and 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.

[0041] 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 engages 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 disengages 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 crushing arm 51 and the crushing roller 52 move downward under their own weight, thereby crushing the larger particles of soil samples in the screening chamber 20. As the transmission shaft 53 rotates, the crushing arm 51 drives the crushing roller 52 to move back and forth up and down, thereby continuously crushing the larger particles of soil samples in the screening chamber 20 under the drive of the rotating arm 31 to ensure the uniformity of the soil sample and that the soil sample can fully fall into the dissolution chamber 10, so as to ensure the accuracy of the test results.

[0042] like Figure 1 、 Figure 3 and Figure 5As shown, in some embodiments of the soil sample dissolution device described in this embodiment, a tension spring 54 is further connected between the crushing arm 51 and the rotating arm 31. In this embodiment, when the crushing arm 51 moves upward, the tension spring 54 is stretched. When the crushing arm 51 moves downward, the tension spring 54 recovers its deformation, exerting a downward tension on the crushing arm 51, thereby enabling the crushing arm 51 to drive the crushing roller 52 to move downward quickly, thereby fully crushing and pulverizing the soil sample, achieving a better crushing effect.

[0043] like Figure 1 、 Figure 3 and Figure 4 As shown, in some embodiments of the soil sample dissolution device described in this embodiment, drive sliders 6 are evenly distributed along the circumference of the mounting base 2, and stirring rollers 7 are evenly distributed along the circumference of the mounting base 2 within the dissolution chamber 10, corresponding one-to-one with the drive sliders 6. In this embodiment, by providing multiple drive sliders 6 and multiple stirring rollers 7, the solution in the dissolution chamber 10 is more fully stirred, and the soil sample is more fully dissolved in the extraction solvent, thereby improving the accuracy of the test results.

[0044] 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 provided 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 after passing through the accommodating hole 24.

[0045] Specifically, this 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 resets, causing the driving slider 6 to move upward, thereby driving the stirring roller 7 to rotate in the opposite direction. In this way, through the intermittent reciprocating rotation of the stirring roller 7, the solution in the dissolution chamber 10 is fully stirred, the dissolution of the soil sample is accelerated, and the extraction efficiency is improved.

[0046] 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 latch 63 is protruded from the outer wall of the driving shaft 62, and the first latch 63 is movably embedded in the first spiral groove 72.

[0047] 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 cooperates with the first spiral groove 72 through the first pin 63 to drive the stirring roller 7 to rotate; 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 cooperates with the first spiral groove 72 through the first pin 63 to drive the stirring roller 7 to rotate in the opposite direction, thereby realizing the reciprocating rotation of the stirring roller 7.

[0048] like Figure 1 、 Figure 4 、 Figure 9 and Figure 10 As 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 shift block 73 for shifting the ratchet 8 to rotate in one direction; the dissolution shell 1 is provided with a liquid outlet 12 at the bottom; the dissolution shell 1 is slidably provided with a control valve 13 at the liquid outlet 12, 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.

[0049] like Figure 9 and Figure 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 pin 132 in the second accommodating groove 81; the second pin 132 is movably embedded in the guide track; initially, the second pin 132 is located in the arc segment 82.

[0050] like Figure 9 As shown, in this embodiment, the connecting shaft 131 is provided with a third accommodating groove, a third spring 133 is provided in the third accommodating groove, and the second latch 132 is movably inserted into the third accommodating groove and abuts against the third spring 133 .

[0051] Specifically, when the stirring roller 7 rotates forward, the stirring roller 7 engages with the ratchet 8 through the shifting block 73, and the ratchet 8 is rotated. The second latch 132 moves along the trajectory of the arc segment 82. When the stirring roller 7 rotates reversely, the ratchet 8 does not rotate reversely under the locking action of the pawl 85. The shifting block 73 is squeezed by the ratchet 8 and retracts inward. Until the stirring roller 7 rotates forward again, the stirring roller 7 again rotates the ratchet 8 through the shifting block 73. In this way, each stirring roller 7 intermittently shifts the ratchet 8 rotates unidirectionally. As the ratchet 8 rotates unidirectionally, 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 of the soil sample in the dissolution chamber 10 is discharged from the dissolution chamber 10 through the liquid outlet 12 for VOC detection.

[0052] When the second pin 132 enters the vertical section 84 along the second spiral groove 83, the second spring 14 resets and pushes the control valve 13 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.

[0053] 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 provided in the fourth accommodating groove, and the shifting block 73 movably extends into the fourth accommodating groove and abuts against the fourth spring 74 .

[0054] like Figure 1 As shown, in some embodiments of the soil sample dissolution device described in this embodiment, a dissolution tray 15 is provided on the inner bottom of the dissolution housing 1, and a filter 16 is provided on the dissolution tray 15. A through hole is provided in the center of the dissolution tray 15 at a position corresponding to the liquid outlet 12, and a control valve 13 is disposed within the through hole. In this embodiment, the dissolution tray 15 is provided to carry the dissolving liquid, and the dissolving liquid is filtered through the filter 16 to remove impurities or foreign matter in the soil sample.

[0055] 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 baffle 322 extending vertically downward; the rotating arm 31 has a horizontal section 311; the rolling assembly is provided on the horizontal section 311; and the baffle 322 abuts against the surface of the horizontal section 311 of the rotating arm 31.

[0056] 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. The guide cover 32 is rotated by the rotating disk 3 so that part of the soil sample remaining on the guide cover 32 can be thrown off.

[0057] 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 .

[0058] 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 chamber is formed between the dissolution shell and the mounting seat; the mounting seat is provided with a first inclined surface; a support plate extends from the outer periphery of the mounting seat, and a screening chamber 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 along the circumference with rotating arms that abut against the first inclined surface, 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 chamber during rotation; The mounting seat is provided with a driving slider which elastically slides 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 which rotates in the dissolution chamber; the stirring roller is transmission-connected to the driving slider so that the stirring roller rotates back and forth when the driving slider slides up and down; The driving part is a ring gear, and the rolling assembly includes a rolling arm that is lifted and lowered on the rotating arm, a rolling roller installed on the rolling arm, and a transmission shaft that is rotatable on the rotating arm; the rolling arm is provided with an avoidance hole, and the transmission shaft passes through the avoidance hole, one end of the transmission shaft is provided with a gear structure that engages with the ring gear, 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 engage with the half-gear structure.

2. A soil sample dissolution device according to claim 1, characterized in that: A tension spring is also connected between the rolling arm and the rotating arm.

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

4. A soil sample dissolution device according to claim 3, characterized in that: The mounting seat is provided with a receiving hole corresponding to each driving slider, and the driving slider is slidably arranged in the receiving hole; a first spring is connected between the driving slider and the mounting seat; The driving slider is provided with a driving shaft, which passes through the accommodating hole and is transmission-connected with the corresponding stirring roller.

5. A soil sample dissolving device according to claim 4, 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 protruded from the outer wall of the driving shaft, and the first bayonet is movably embedded in the first spiral groove.

6. The soil sample dissolution device according to claim 1, characterized in that: The mounting seat is provided with a ratchet and a pawl for one-way locking of the ratchet when rotating in the dissolving chamber; a shift 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 provided for sliding 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 cooperation with the ratchet and the second spring.

7. A soil sample dissolving device according to claim 6, 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 a circular 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 circular 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 circular 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.

8. The soil sample dissolution device according to claim 6, characterized in that: A dissolving disc is provided at the inner bottom of the dissolving shell, and a filter screen is provided on the dissolving disc; a through hole is provided at a position corresponding to the liquid outlet in the middle of the dissolving disc, and a control valve is passed through the through hole.

9. The soil sample dissolution device according to claim 1, characterized in that: A guide cover is provided on the top of the dissolving shell for rotation; the guide cover has a guide port; 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 provided on the horizontal section; the shielding plate abuts against the surface of the horizontal section of the rotating arm.

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