An experimental soil sample processing and quantification device

Abstract

The present invention discloses a test soil sample processing and quantification device, which relates to the technical field of soil processing for tests. An inlet is provided at the upper end of the outer shell. The grinding module is arranged below the inlet and is used for grinding the passing soil. The stirring and shearing module is arranged close to the screening module, and the stirring and shearing module is used for stirring and shearing the soil that has been ground and dropped onto the screening module, and promoting the screening of the broken soil particles by contacting and rotating with the screening module. The screening module is used to allow soil particles with a particle size smaller than the aperture of the screening module to pass through. The debris removal module is used to receive the screened soil particles and remove debris such as grass and wood chips mixed in the soil particles. The weighing and transmission module is used to receive the test soil after removing the grass and wood chips, and conduct quantitative weighing on the test soil and then export it. The present invention can achieve the grinding and pulverization of soil, debris separation, and quantitative transmission, improving the efficiency of soil pretreatment and the filling efficiency of soil samples.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental soil treatment, and particularly to an experimental soil sample treatment and quantification device. Background Art

[0002] The pretreatment of soil samples refers to processes such as removing sundries (grass roots, wood chips, stones, etc.), air-drying, grinding, sieving, and preservation of soil samples collected in the field. For the determination of basic soil properties, some soil physical and chemical properties need to be measured with fresh samples, such as soil microorganisms, volatile and semi-volatile organic compounds, redox potential, soil bulk density, soil water content, etc., as well as unstable indicators such as ammonium nitrogen, nitrate nitrogen, and low-valent iron. For the remaining soil, to ensure the stability of soil properties, it needs to be air-dried and preserved as soon as possible. Soil physical and chemical properties such as soil pH, organic matter content, nutrient content, and texture require air-dried soil with different particle sizes. In addition, a large amount of pretreated air-dried soil is required in simulation tests such as pot experiments.

[0003] The pretreatment process of soil samples usually requires manual handling. After air-drying, the soil needs to be ground by hand. However, there are often sundries such as weeds and wood chips in the farmland soil after grinding, and such sundries need to be removed manually, which often leads to time-consuming and large workload in the pretreatment process, and problems such as dust generation. The working conditions of soil pretreatment urgently need to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide an experimental soil sample treatment and quantification device to solve the problems existing in the above-mentioned prior art, and to achieve grinding and crushing of soil, separation of sundries, and quantitative transmission, so as to improve the efficiency of soil pretreatment and the filling efficiency of soil samples.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention provides an experimental soil sample treatment and quantification device, including a housing, a grinding module, a stirring and shearing module, a screening module, and a sundry removal module that are installed in the housing and arranged in sequence from top to bottom, and a weighing and transmission module installed at the bottom of the housing. An inlet is opened at the upper end of the housing. The grinding module is arranged below the inlet and is used for grinding the passing soil. The stirring and shearing module is arranged close to the screening module, and the stirring and shearing module is used for stirring and shearing the soil that has been ground and dropped onto the screening module. The stirring and shearing module also promotes the screening of the broken soil particles by rotating in contact with the screening module. The screening module is used to allow soil particles with a particle size smaller than the aperture of the screening module to pass through. The sundry removal module is used to receive the screened soil particles and remove the grass and wood chips mixed in the soil particles. The weighing and transmission module is used to receive the experimental soil after removing the grass and wood chips, weigh the treated soil, and then export it, or export the soil with the required mass.

[0007] Preferably, the grinding module includes a grinding motor, a driving counter-roller shaft, a driven counter-roller shaft and a telescopic assembly. The driving counter-roller shaft and the driven counter-roller shaft are arranged oppositely and parallel to each other. The grinding motor is connected to the driving counter-roller shaft and the driven counter-roller shaft respectively and can drive the driving counter-roller shaft and the driven counter-roller shaft to rotate respectively. The telescopic assembly is connected to the driven counter-roller shaft and can drive the driven counter-roller shaft to move in a direction close to or away from the driving counter-roller shaft. Soil is passed through and ground between the driving counter-roller shaft and the driven counter-roller shaft.

[0008] Preferably, a primary screening module is further provided between the grinding module and the stirring and shearing module. The primary screening module includes a primary screening motor, a primary screening drum and a primary screening guide plate. The primary screening guide plate is installed in the housing, and the upper end of the primary screening guide plate is arranged close to the outlet of the grinding module. The lower end of the primary screening guide plate extends into the primary screening drum and is arranged close to the middle of the first end of the primary screening drum. The primary screening drum is rotatably installed in the housing, and the middle of the second end of the primary screening drum is connected to the output shaft of the primary screening motor. An outlet communicating with the outside of the housing is provided at the second end of the primary screening drum. The primary screening motor can drive the primary screening drum to rotate. Substances with a particle size larger than the aperture of the primary screening drum can be discharged through the outlet, and substances with a particle size smaller than the aperture of the primary screening drum can fall into the screening module through the screen holes of the primary screening drum.

[0009] Preferably, the screening module is a multi-stage arc-shaped screen. The multi-stage arc-shaped screen includes a first arc-shaped screen and a second arc-shaped screen. The first arc-shaped screen is located below the outlet of the grinding module. Both the first arc-shaped screen and the second arc-shaped screen are inclined. The upper end of the first arc-shaped screen is clamped to the inner wall of the housing. The lower end of the first arc-shaped screen is connected to the lower end of the second arc-shaped screen. The upper end of the second arc-shaped screen is clamped to the inner wall of the housing. The aperture of the first arc-shaped screen is larger than that of the second arc-shaped screen.

[0010] Preferably, the stirring and shearing module includes two sets of stirring and shearing units with the same structure. One set of stirring and shearing units is located above the first arc-shaped screen, and the other set of stirring and shearing units is located above the second arc-shaped screen. When the two sets of stirring and shearing units rotate, they can act on the soil particles passing between the two sets of stirring and shearing units at the same time and stir and shear the soil particles. The stirring and shearing unit located above the first arc-shaped screen can drive the soil particles on the first arc-shaped screen to move towards the second arc-shaped screen when rotating.

[0011] Preferably, the stirring and shearing unit includes a stirring and shearing motor, a gear set, a rotating shaft, a plurality of rotating blades, a plurality of stirring and shearing elements, and a plurality of screening brushes. The stirring and shearing motor, the gear set, and the rotating shaft are connected in sequence. The plurality of rotating blades are evenly installed on the outer periphery of the rotating shaft, and the plurality of rotating blades, the plurality of stirring and shearing elements, and the plurality of screening brushes correspond to each other one by one. The stirring and shearing elements are installed at one end of the rotating blade away from the rotating shaft, and the screening brushes are installed at one end of the stirring and shearing element away from the rotating blade. The two rotating shafts are arranged in a staggered manner in both the horizontal and vertical directions. When the two rotating shafts drive the corresponding rotating blades to rotate, two adjacent rotating blades located on different rotating shafts can drive the stirring and shearing elements to stir and shear the soil. When the rotating blade located above the first arc-shaped screen rotates to make the corresponding screening brush contact the first arc-shaped screen, the screening brush can push the soil particles towards the second arc-shaped screen.

[0012] Preferably, the debris removal module includes a negative pressure adsorption assembly, a debris removal motor, a track, an electrostatic generation assembly, a plurality of horizontal electrostatic adsorption rods, and a plurality of vertical electrostatic adsorption lines. The negative pressure adsorption assembly is installed on one side of the housing and can communicate with the inside of the housing. The track is a racetrack-shaped track, and the track includes a first section and a second section that are smoothly connected. The electrostatic generation assembly is connected to the track and can make the first section charged electrostatically while the second section is not charged. The plurality of horizontal electrostatic adsorption rods are all installed on the track and are arranged in sequence along the extension direction of the track, and the horizontal electrostatic adsorption rods can conduct electricity with the track. The plurality of vertical electrostatic adsorption lines correspond to the plurality of horizontal electrostatic adsorption rods one by one, and the plurality of vertical electrostatic adsorption lines enclose a racetrack shape and are sleeved on the outer periphery of the track. The outer side of the vertical electrostatic adsorption lines is used to receive soil particles. Adjacent vertical electrostatic adsorption lines are connected by insulating fixing members but do not conduct electricity. The horizontal electrostatic adsorption rods are located inside the plurality of vertical electrostatic adsorption lines and conduct electricity with the corresponding vertical electrostatic adsorption lines. The debris removal motor can drive each horizontal electrostatic adsorption rod to move around the track. When the horizontal electrostatic adsorption rod is located in the first section, it can electrostatically adsorb the grass and wood debris on the corresponding vertical electrostatic adsorption line. When the horizontal electrostatic adsorption rod is located in the second section, it no longer adsorbs the grass and wood debris on the corresponding vertical electrostatic adsorption line, and the negative pressure adsorption assembly discharges the grass and wood debris. The negative pressure adsorption assembly includes a debris capture part and a negative pressure suction pipe. One end of the negative pressure suction pipe is close to the second section, and the other end of the negative pressure suction pipe is connected to the debris capture part. The debris capture part is used to provide negative pressure air and discharge the grass and wood debris through the negative pressure suction pipe.

[0013] Preferably, the first section is a first positive charge track, the second section is an insulating track, and the electrostatic generating assembly is connected to the first positive charge track.

[0014] Preferably, the first section is a second positive charge track, the second section is a negative charge track, the positive electrode of the electrostatic generating assembly is connected to the second positive charge track, and the negative electrode of the electrostatic generating assembly is connected to the negative charge track.

[0015] Preferably, the weighing and conveying module includes a weighing sensor, a hopper, a bracket, a conveying motor, a screw conveyor reducer, and a screw conveying pipe. The hopper is installed at the lower end of the housing and is communicated with the inside of the housing. The bracket is installed on the outer periphery of the hopper. The weighing sensor is installed at the upper end of the hopper and can allow the soil particles falling from the housing to enter the hopper after weighing. The lower end of the hopper is communicated with the lower end of the screw conveying pipe, and the upper end of the screw conveying pipe extends obliquely upward and is provided with a soil outlet. The conveying motor is connected to the screw conveyor reducer, and the screw conveyor reducer is connected to the lower end of the screw in the screw conveying pipe.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] For the test soil sample processing and quantitative device provided by the present invention, a feed port is opened at the upper end of the housing to facilitate the feeding of the soil to be processed into the housing. The grinding module is arranged below the feed port and is used for grinding the passing soil, so as to break up the caked soil into soil particles, which is convenient for subsequent processing. The stirring and shearing module is arranged close to the screening module, and the stirring and shearing module is used for shearing the soil after grinding and falling onto the screening module, so that the soil particles are further crushed and mixed and fall into the screening module. The screening module has sieve holes, so that the soil particles with a particle size smaller than the aperture of the sieve holes pass through and fall onto the debris removal module, while the substances with a particle size larger than the aperture of the sieve holes remaining in the screening module are discharged to the outside of the housing. The debris removal module is used for receiving the soil particles screened by the screening module and removing the grass and wood chips mixed in the soil particles, so as to realize the separation of the grass and wood chips from the soil particles, which is convenient for obtaining qualified soil for scientific experiments. The weighing and conveying module is used for receiving the test soil after removing the grass and wood chips, weighing the test soil and then exporting it, realizing the quantitative transmission of the soil. At the same time, the processed soil can be quantitatively transferred to the required test container through the weighing and conveying module without being transferred out, further reducing the test workload and improving the soil sample processing efficiency. Through the above design, the working environment of scientific researchers is also improved, it is convenient and fast to use, and the workload of staff is reduced. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the front view of the test soil sample processing and quantification device in the present invention;

[0020] Figure 2 It is the side view of the test soil sample processing and quantification device in the present invention;

[0021] Figure 3 It is the schematic diagram when the test soil sample processing and quantification device in the present invention is working;

[0022] Figure 4 It is the top view of the grinding module in the present invention;

[0023] Figure 5 It is the front view of the stirring and shearing module and the screening module in the present invention;

[0024] Figure 6 It is the side view of the stirring and shearing module and the screening module in the present invention;

[0025] Figure 7 It is the top view of the stirring and shearing module and the screening module in the present invention;

[0026] Figure 8 It is the front view of the debris removal module in the present invention;

[0027] Figure 9 It is the top view of the debris removal module in the present invention;

[0028] Figure 10 It is the front view when the track in the present invention includes a conductor track and an insulating track;

[0029] Figure 11 It is the front view when the track in the present invention includes a positive charge track and a negative charge track;

[0030] Figure 12 It is the connection schematic diagram of the transverse electrostatic adsorption rod and the longitudinal electrostatic adsorption line in the present invention;

[0031] In the figure: 1 - grinding module, 11 - telescopic component, 12 - active counter-roller shaft, 13 - driven counter-roller shaft, 14 - bearing; 2 - primary screening module, 21 - primary screening guide plate, 22 - primary screening rotating drum, 23 - discharge port, 24 - primary screening motor; 3 - stirring and shearing module, 31 - fixing bolt, 32 - rotating shaft, 33 - rotating blade, 34 - stirring and shearing element, 35 - stirring and shearing motor, 36 - reduction gear, 37 - driving gear, 38 - screening brush; 4 - screening module, 41 - first arc-shaped screen, 42 - second arc-shaped screen, 43 - card slot; 5 - debris removal module, 51 - second section, 511 - insulating track, 512 - first positive charge track, 513 - negative charge track, 514 - second positive charge track, 52 - first section, 53 - transverse electrostatic adsorption rod, 54 - longitudinal electrostatic adsorption wire, 55 - electrostatic generating component, 56 - debris removal motor, 57 - gear, 58 - insulating fixture; 6 - weighing and conveying module, 61 - weighing sensor, 62 - hopper, 63 - support, 64 - conveying motor, 65 - screw conveyor reducer, 66 - screw conveyor pipe, 67 - soil outlet, 7 - feed port, 8 - negative pressure adsorption component, 81 - negative pressure suction port, 82 - negative pressure suction pipe, 83 - debris capture part, 821 - negative pressure regulator, 822 - debris storage box; 9 - housing. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The purpose of the present invention is to provide a test soil sample processing and quantitative device to solve the problems existing in the prior art, realize the grinding and pulverization of soil, debris separation, and quantitative transmission, and improve the soil pretreatment efficiency and soil sample filling efficiency.

[0034] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0035] As Figures 1-12As shown in the figure, this embodiment provides a device for processing and quantifying test soil samples, which includes a housing 9, a grinding module 1, a stirring and shearing module 3, a screening module 4, and a debris removal module 5 that are installed in the housing 9 in sequence from top to bottom, and a weighing and transmission module 6 installed at the bottom of the housing 9. An inlet 7 is provided at the upper end of the housing 9 to facilitate the feeding of the soil to be processed into the housing 9. The grinding module 1 is arranged below the inlet 7 and is used for grinding the passing soil, thereby breaking up the agglomerated soil into soil particles for subsequent processing. The stirring and shearing module 3 is arranged close to the screening module 4 and is used for shearing the soil that has been ground and dropped onto the screening module 4, further crushing and mixing the soil particles and causing them to fall into the screening module 4. The screening module 4 has sieve holes, so that the soil particles with a particle size smaller than the aperture of the sieve holes can pass through and fall onto the debris removal module 5, while the substances with a particle size larger than the aperture of the sieve holes remaining in the screening module 4 are discharged outside the housing 9. The debris removal module 5 is used to receive the soil particles screened by the screening module 4 and remove the grass and wood chips mixed in the soil particles, thereby realizing the separation of the grass and wood chips from the soil particles and facilitating the obtaining of qualified soil for scientific experiments. The weighing and transmission module 6 is used to receive the test soil after the grass and wood chips have been removed, weigh the processed soil and then export it, or export the soil with the required mass, realizing the quantitative transmission of the soil. At the same time, the processed soil can be quantitatively transferred to the required test container through the weighing and transmission module 6 without being transferred out, further reducing the test workload and improving the efficiency of soil sample processing. Through the above design, the working environment of scientific researchers is also improved, making it convenient and fast to use and reducing the workload of staff. Moreover, in the soil of the device for processing and quantifying test soil samples provided in this embodiment, automatic component weighing can be achieved through the control system, and then the quantitative export of the soil with the set required mass (such as 1 kg, 2 kg, or 3 kg) can be realized. Then, the test container can be replaced for sub-packaging, and continuous quantitative sub-packaging can be achieved without weighing with a balance.

[0036] Specifically, the grinding module 1 includes a grinding motor, a driving counter-roller shaft 12, a driven counter-roller shaft 13, and a telescopic assembly 11. The telescopic assembly 11 is preferably a hydraulic component. The driving counter-roller shaft 12 and the driven counter-roller shaft 13 are arranged opposite to each other and are parallel to each other. Bearings 14 are provided at the ends of both the driving counter-roller shaft 12 and the driven counter-roller shaft 13 to ensure stable rotation. The grinding motor is connected to both the driving counter-roller shaft 12 and the driven counter-roller shaft 13 and can drive the driving counter-roller shaft 12 and the driven counter-roller shaft 13 to rotate respectively. Moreover, the driving counter-roller shaft 12 and the driven counter-roller shaft 13 can rotate in the direction of approaching each other, so as to roll and grind the soil entering between the driving counter-roller shaft 12 and the driven counter-roller shaft 13. The telescopic assembly 11 is connected to the driven counter-roller shaft 13 and can drive the driven counter-roller shaft 13 to move in the direction of approaching or departing from the driving counter-roller shaft 12, thereby adjusting the distance between the driving counter-roller shaft 12 and the driven counter-roller shaft 13 to ensure the pressure exerted by the driving counter-roller shaft 12 and the driven counter-roller shaft 13 on the soil and ensure physical crushing can be carried out.

[0037] Above the grinding module 1 and below the feed inlet 7, a curved feed channel can be provided. The feed presents a three-fold bend, thereby reducing the impact of grinding soil dust and preventing soil particles from breaking and popping out.

[0038] An initial screening module 2 is also provided between the grinding module 1 and the stirring and shearing module 3. The initial screening module 2 includes an initial screening motor 24, an initial screening drum 22, and an initial screening deflector 21. The initial screening deflector 21 is inclined and installed in the housing 9, and the upper end of the initial screening deflector 21 is arranged close to the outlet of the grinding module 1 and is used to receive the ground soil particles. The lower end of the initial screening deflector 21 extends into the initial screening drum 22 and is arranged close to the middle of the first end of the initial screening drum 22, thereby guiding the ground soil particles into the initial screening drum 22. The initial screening drum 22 is rotatably installed in the housing 9, and the middle of the second end of the initial screening drum 22 is connected to the output shaft of the initial screening motor 24. Then, the initial screening drum 22 is driven to rotate by the initial screening motor 24. Substances with a particle size smaller than the aperture of the initial screening drum 22 fall through the rotation of the initial screening drum 22. An outlet 23 communicating with the outside of the housing 9 is provided at the second end of the initial screening drum 22. Guide vanes are provided on the inner wall of the initial screening drum 22. As the initial screening drum 22 rotates, sundries such as stones in the soil with a particle size larger than the aperture of the initial screening drum 22 can move spirally obliquely upward under the action of the guide vanes until they reach the outlet 23 and are discharged through the outlet 23. Substances with a particle size smaller than the aperture of the initial screening drum 22 can fall through the sieve holes of the initial screening drum 22 into the screening module 4, realizing the primary separation of sundries in the soil.

[0039] The screening module 4 is a multi-stage arc-shaped screen, and the multi-stage arc-shaped screen includes a first arc-shaped screen 41 and a second arc-shaped screen 42. Those skilled in the art can also select the specific number of arc-shaped screens according to actual needs. The first arc-shaped screen 41 is located directly below the outlet of the primary screening rotary drum 22. Both the first arc-shaped screen 41 and the second arc-shaped screen 42 are inclined. The upper end of the first arc-shaped screen 41 is clamped to the inner wall of the housing 9. The lower end of the first arc-shaped screen 41 is connected to the lower end of the second arc-shaped screen 42. The upper end of the second arc-shaped screen 42 is clamped to the inner wall of the housing 9, preferably connected by a clamping block and a clamping groove 43. Then, by pulling the clamping block out of the clamping groove 43, the screen with different mesh diameters can be inserted and replaced. The aperture of the first arc-shaped screen 41 is larger than that of the second arc-shaped screen 42, so that the soil particles first enter the first arc-shaped screen 41 with a larger aperture and are screened by the first arc-shaped screen 41. With the action of the stirring and shearing module 3, they then enter the second arc-shaped screen 42 with a smaller aperture for further screening, causing the soil particles to fall under the action of gravity, improving the screening effect and screening efficiency.

[0040] The stirring and shearing module 3 includes two sets of stirring and shearing units with the same structure. One set of stirring and shearing units is located above the first arc-shaped screen 41, and the other set of stirring and shearing units is located above the second arc-shaped screen 42. Thus, the soil particles on the first arc-shaped screen 41 and the second arc-shaped screen 42 can be respectively acted on by the two sets of stirring and shearing units. When the two sets of stirring and shearing units rotate, they can simultaneously act on the soil particles passing between the two sets of stirring and shearing units and stir and shear the soil particles, thereby achieving further shearing and mixing after the soil particles are broken, making the particle size of the soil particles more uniform. The stirring and shearing unit located above the first arc-shaped screen 41 can drive the soil particles on the first arc-shaped screen 41 to move towards the second arc-shaped screen 42 when rotating. Thus, the soil particles are first screened by the first arc-shaped screen 41 with a larger aperture, and then further screened by the second arc-shaped screen 42. At the same time, it can also promote the soil to pass through each arc-shaped screen.

[0041] In this embodiment, by using the stirring and shearing unit in combination with the arc-shaped screen, the soil grinding and mixing are more sufficient, reducing the sample preparation error caused by soil heterogeneity.

[0042] The stirring and shearing unit includes a stirring and shearing motor 35, a gear set, a rotating shaft 32, a plurality of rotating blades 33, a plurality of stirring and shearing elements 34, and a plurality of screening brushes 38. The stirring and shearing motor 35, the gear set, and the rotating shaft 32 are connected in sequence. Thus, the driving force is provided by the stirring and shearing motor 35, and after being speed-changed by the gear set, the driving force is transmitted to the rotating shaft 32 to realize the rotation of the rotating shaft 32. The plurality of rotating blades 33 are evenly installed on the outer periphery of the rotating shaft 32 and can rotate with the rotation of the rotating shaft 32. The plurality of rotating blades 33, the plurality of stirring and shearing elements 34, and the plurality of screening brushes 38 are in one-to-one correspondence. The stirring and shearing element 34 is installed at the end of the rotating blade 33 away from the rotating shaft 32. Thus, with the rotation of the rotating shaft 32 driving the rotating blade 33, the soil particles are sheared by the stirring and shearing element 34. The screening brush 38 is installed at the end of the stirring and shearing element 34 away from the rotating blade 33 and can push the soil particles by the movement of the screening brush 38 on the first arc-shaped screen 41 or the second arc-shaped screen 42. The two rotating shafts 32 are arranged in a staggered manner in both the horizontal and vertical directions. The distance between the two rotating shafts 32 in the horizontal direction is greater than the length of the rotating blade 33 and less than twice the length of the rotating blade 33. The distance between the two rotating shafts 32 in the vertical direction is less than the length of the rotating blade 33. When the two rotating shafts 32 rotate, the respective rotating blades 33 do not interfere with each other. When the two rotating shafts 32 drive the corresponding rotating blades 33 to rotate, two adjacent rotating blades 33 located on different rotating shafts 32 can drive the stirring and shearing elements 34 to stir and shear the soil. When the rotating blade 33 above the first arc-shaped screen 41 rotates to make the corresponding screening brush 38 contact the first arc-shaped screen 41, the screening brush 38 can push the soil particles towards the second arc-shaped screen 42. The rotating shaft 32 and the stirring and shearing element 34 are connected by a fixing bolt 31. The stirring and shearing motor 35 is connected to the reduction gear 36 in the gear set, and the reduction gear 36 is connected to the driving gear 37 in the gear set, finally realizing the rotation of the two rotating shafts 32.

[0043] The debris removal module 5 includes a negative pressure adsorption component 8, a debris removal motor 56, a track, an electrostatic generation component 55, a plurality of horizontal electrostatic adsorption rods 53, and a plurality of vertical electrostatic adsorption wires 54. The debris removal module 5 is inclined. The negative pressure adsorption component 8 is installed on one side of the housing 9 and can communicate with the inside of the housing 9. The track is a racetrack-shaped track, and the track includes a first section 52 and a second section 51 that are smoothly connected to ensure the smooth movement of the horizontal electrostatic adsorption rods 53 on the track. Among them, the second section 51 is located at the higher end. The electrostatic generation component 55 is connected to the track and can make the first section 52 charged electrostatically while the second section 51 is not charged electrostatically. Thus, the first section 52 can electrostatically adsorb the grass and wood chips in the soil, while the second section 51 cannot adsorb the grass and wood chips in the soil. A plurality of horizontal electrostatic adsorption rods 53 are all installed on the track and are arranged in sequence along the extending direction of the track, and the horizontal electrostatic adsorption rods 53 can be electrically connected to the track. Thus, as the horizontal electrostatic adsorption rods 53 move, they are charged electrostatically or not charged electrostatically. A plurality of vertical electrostatic adsorption wires 54 correspond to the plurality of horizontal electrostatic adsorption rods 53 one by one, and the plurality of vertical electrostatic adsorption wires 54 enclose a racetrack shape and are sleeved outside the track. The plurality of vertical electrostatic adsorption wires 54 cooperate with the plurality of horizontal electrostatic adsorption rods 53 to form an electrostatic adsorption net. The outside of the vertical electrostatic adsorption wires 54 is used to receive soil particles. Adjacent vertical electrostatic adsorption wires 54 are connected by an insulating fixing member 58 but are not electrically connected. The horizontal electrostatic adsorption rods 53 are located inside the inner circle of the plurality of vertical electrostatic adsorption wires 54 and are electrically connected to the corresponding vertical electrostatic adsorption wires 54. Thus, the electrical connection conditions of the respective vertical electrostatic adsorption wires 54 are not related to each other. The debris removal motor 56 can drive each horizontal electrostatic adsorption rod 53 to move around the track, and the horizontal electrostatic adsorption rod 53 is charged electrostatically when it is located in the first section 52. Thus, it electrostatically adsorbs the grass and wood chips on the corresponding vertical electrostatic adsorption wire 54 to prevent the grass and wood chips from coming off. The horizontal electrostatic adsorption rod 53 is not charged electrostatically when it is located in the second section 51. Thus, it no longer adsorbs the grass and wood chips on the corresponding vertical electrostatic adsorption wire 54. At the same time, the negative pressure adsorption component 8 negatively attracts the grass and wood chips. Since the grass and wood chips are lighter, the grass and wood chips are discharged, realizing the separation of the grass and wood chips from the soil. The negative pressure adsorption component 8 includes a debris capture part 83 and a negative pressure suction air pipe 82. One end of the negative pressure suction air pipe 82 is arranged near the second section 51. Thus, it can provide a negative pressure attraction force near the second section 51. The other end of the negative pressure suction air pipe 82 is connected to the debris capture part 83. Thus, the negatively adsorbed grass and wood chips are inhaled into the debris capture part 83 through the negative pressure suction air port 81 of the negative pressure suction air pipe 82. The debris capture part 83 is used to provide negative pressure air. The debris capture part 83 includes a negative pressure regulator 821 and a debris storage box 822.

[0044] There are also two gears 57 provided inside the track. The two gears 57 are respectively arranged at both ends inside the track and are meshed with the inner ring of the uniform transverse electrostatic adsorption rod 53. At the same time, one of the gears 57 is connected to the debris removal motor 56 and rotates under the drive of the debris removal motor 56, finally realizing the movement of each transverse electrostatic adsorption rod 53.

[0045] As an embodiment, the first section 52 is the first positive charge track 512, the second section 51 is the insulating track 511, and the electrostatic generating assembly 55 is connected to the first positive charge track 512, thereby ensuring that the first positive charge track 512 is electrostatically charged while the insulating track 511 is not electrostatically charged.

[0046] As another embodiment, the first section 52 is the second positive charge track 514, the second section 51 is the negative charge track 513, the positive pole of the electrostatic generating assembly 55 is connected to the second positive charge track 514, and the negative pole of the electrostatic generating assembly 55 is connected to the negative charge track 513, enabling the second positive charge track 514 to quickly adsorb light debris such as negatively charged grass and wood chips in the soil. At the negative charge track 513, due to the same electric charge, repulsion occurs, causing the adsorbed light debris such as negatively charged grass and wood chips to quickly break away and be sucked away by the negative pressure suction air pipe 82.

[0047] In this embodiment, by setting the movable transverse electrostatic adsorption rod 53 and cooperating with its sliding contact with the track, the automatic on-off of static electricity is realized, and the adsorbed grass and wood chips are captured by the negative pressure adsorption assembly 8. The falling soil particles and the transverse electrostatic adsorption rod 53 move simultaneously, effectively improving the capture efficiency of grass and wood chips in the soil.

[0048] The weighing and conveying module 6 includes a weighing sensor 61, a hopper 62, a bracket 63, a conveying motor 64, a screw conveyor reducer 65, and a screw conveying pipe 66. The hopper 62 is installed at the lower end of the housing 9 and is in communication with the inside of the housing 9 to receive the processed soil particles. The bracket 63 is installed on the outer periphery of the hopper 62 to play a supporting role. The weighing sensor 61 is installed at the upper end of the hopper 62 and can allow the soil particles falling from the housing 9 to enter the hopper 62 after weighing, so as to realize quantitative conveying. The lower end of the hopper 62 is communicated with the lower end of the screw conveying pipe 66, and the upper end of the screw conveying pipe 66 extends obliquely upward and is provided with a soil outlet 67. The conveying motor 64 and the screw conveyor reducer 65 are connected, and the screw conveyor reducer 65 is connected to the lower end of the screw in the screw conveying pipe 66. By providing driving force through the conveying motor 64 and changing the speed through the screw conveyor reducer 65, the screw in the screw conveying pipe 66 is driven to rotate. As the screw rotates, the soil is driven to move towards the soil outlet 67. Among them, the angle of the screw conveying pipe 66 and the conveying speed of the bare screw can both be adjusted, and both the conveying motor 64 and the weighing sensor 61 are electrically connected to the control system, thereby controlling the opening and stopping of the screw and setting the rate and quality of conveying the soil sample.

[0049] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An experimental soil sample processing and quantification device, characterized in that: It includes a housing, a grinding module, a stirring and shearing module, a screening module, and a debris removal module that are installed inside the housing in sequence from top to bottom, and a weighing and conveying module installed at the bottom of the housing. An inlet is provided at the upper end of the housing. The grinding module is arranged below the inlet and is used for grinding the passing soil. The stirring and shearing module is arranged close to the screening module, and the stirring and shearing module is used for stirring and shearing the soil that has been ground and fallen onto the screening module. The stirring and shearing module also promotes the screening of the broken soil particles by rotating in contact with the screening module. The screening module is used to allow the soil particles with a particle size smaller than the aperture of the screening module to pass through. The debris removal module is used to receive the screened soil particles and remove the grass and wood chips mixed in the soil particles. The weighing and conveying module is used to receive the test soil after removing the grass and wood chips, weigh the processed soil, and then export it, or export the soil with the required mass. The grinding module includes a grinding motor, a driving counter-roller shaft, a driven counter-roller shaft, and a telescopic component. The driving counter-roller shaft and the driven counter-roller shaft are arranged oppositely and are parallel to each other. The grinding motor is respectively connected to the driving counter-roller shaft and the driven counter-roller shaft and can drive the driving counter-roller shaft and the driven counter-roller shaft to rotate respectively. The telescopic component is connected to the driven counter-roller shaft and can drive the driven counter-roller shaft to move in a direction close to or away from the driving counter-roller shaft. The space between the driving counter-roller shaft and the driven counter-roller shaft is used for the soil to pass through and be ground.

2. The test soil sample processing and quantification device according to claim 1, wherein: An initial screening module is further provided between the grinding module and the stirring and shearing module. The initial screening module includes an initial screening motor, an initial screening drum, and an initial screening deflector. The initial screening deflector is installed inside the housing, and the upper end of the initial screening deflector is arranged close to the outlet of the grinding module. The lower end of the initial screening deflector extends into the initial screening drum and is arranged close to the middle of the first end of the initial screening drum. The initial screening drum is rotatably installed inside the housing, and the middle of the second end of the initial screening drum is connected to the output shaft of the initial screening motor. An outlet communicating with the outside of the housing is provided at the second end of the initial screening drum. The initial screening motor can drive the initial screening drum to rotate. Substances with a particle size larger than the aperture of the initial screening drum can be discharged through the outlet, and substances with a particle size smaller than the aperture of the initial screening drum can fall into the screening module through the sieve holes of the initial screening drum.

3. The test soil sample processing and quantification device according to claim 1, characterized in that: The screening module is a multi-stage arc-shaped screen. The multi-stage arc-shaped screen includes a first arc-shaped screen and a second arc-shaped screen. The first arc-shaped screen is located below the outlet of the grinding module. Both the first arc-shaped screen and the second arc-shaped screen are inclined. The upper end of the first arc-shaped screen is clamped to the inner wall of the housing, the lower end of the first arc-shaped screen is connected to the lower end of the second arc-shaped screen, the upper end of the second arc-shaped screen is clamped to the inner wall of the housing, and the aperture of the first arc-shaped screen is larger than the aperture of the second arc-shaped screen.

4. The test soil sample processing and quantification device according to claim 3, characterized in that: The stirring and shearing module includes two sets of stirring and shearing units with the same structure. One set of the stirring and shearing units is located above the first arc-shaped screen, and the other set of the stirring and shearing units is located above the second arc-shaped screen. When the two sets of the stirring and shearing units rotate, they can simultaneously act on the soil particles passing between the two sets of the stirring and shearing units and stir and shear the soil particles. The stirring and shearing unit located above the first arc-shaped screen can drive the soil particles on the first arc-shaped screen to move towards the second arc-shaped screen when rotating.

5. The test soil sample processing and quantification device according to claim 4, wherein: The stirring and shearing unit includes a stirring and shearing motor, a gear set, a rotating shaft, a plurality of rotating blades, a plurality of stirring and shearing elements, and a plurality of screening brushes. The stirring and shearing motor, the gear set, and the rotating shaft are connected in sequence. The plurality of rotating blades are uniformly installed on the outer periphery of the rotating shaft, and the plurality of rotating blades, the plurality of stirring and shearing elements, and the plurality of screening brushes correspond one by one. The stirring and shearing element is installed at the end of the rotating blade far from the rotating shaft, and the screening brush is installed at the end of the stirring and shearing element far from the rotating blade; the two rotating shafts are arranged in a staggered manner both in the horizontal direction and the vertical direction. When the two rotating shafts drive the corresponding rotating blades to rotate, two adjacent rotating blades located on different rotating shafts can drive the stirring and shearing elements to stir and shear the soil. When the rotating blade located above the first arc-shaped screen rotates to make the corresponding screening brush contact the first arc-shaped screen, the screening brush can push the soil particles towards the second arc-shaped screen.

6. The test soil sample processing and quantification device according to claim 1, characterized in that: The debris removal module includes a negative pressure adsorption component, a debris removal motor, a track, an electrostatic generation component, a plurality of horizontal electrostatic adsorption rods, and a plurality of vertical electrostatic adsorption wires. The negative pressure adsorption component is installed on one side of the housing and can communicate with the interior of the housing. The track is a racetrack-shaped track, and the track includes a first section and a second section that are smoothly connected. The electrostatic generation component is connected to the track and can make the first section charged electrostatically while the second section is not charged. A plurality of the horizontal electrostatic adsorption rods are all installed on the track and are arranged in sequence along the extending direction of the track, and the horizontal electrostatic adsorption rods can be conducted with the track. A plurality of the vertical electrostatic adsorption wires correspond to the plurality of horizontal electrostatic adsorption rods one by one, and the plurality of vertical electrostatic adsorption wires form a racetrack shape and are sleeved on the outer periphery of the track, and the outer side of the vertical electrostatic adsorption wires is used for receiving soil particles. Adjacent vertical electrostatic adsorption wires are connected by insulating fixing members but are not conducted. The horizontal electrostatic adsorption rods are located inside the inner circle of the plurality of vertical electrostatic adsorption wires and are conducted with the corresponding vertical electrostatic adsorption wires. The debris removal motor can drive each of the horizontal electrostatic adsorption rods to move around the track. When the horizontal electrostatic adsorption rod is located in the first section, it can electrostatically adsorb the grass and wood chips on the corresponding vertical electrostatic adsorption wire. When the horizontal electrostatic adsorption rod is located in the second section, it no longer adsorbs the grass and wood chips on the corresponding vertical electrostatic adsorption wire, and the negative pressure adsorption component discharges the grass and wood chips. The negative pressure adsorption component includes a debris capture part and a negative pressure suction air pipe. One end of the negative pressure suction air pipe is arranged close to the second section, and the other end of the negative pressure suction air pipe is connected to the debris capture part. The debris capture part is used to provide negative pressure air and discharge the grass and wood chips through the negative pressure suction air pipe.

7. The test soil sample processing and quantification device according to claim 6, characterized in that: The first section is a first positive charge track, and the second section is an insulating track. The electrostatic generation component is connected to the first positive charge track.

8. The test soil sample processing and quantification device according to claim 6, characterized in that: The first section is a second positive charge track, and the second section is a negative charge track. The positive electrode of the electrostatic generation component is connected to the second positive charge track, and the negative electrode of the electrostatic generation component is connected to the negative charge track.

9. The test soil sample processing and quantification device according to claim 1, characterized in that: The weighing and transmission module includes a weighing sensor, a hopper, a bracket, a transmission motor, a screw conveyor reducer, and a screw conveyor pipe. The hopper is installed at the lower end of the housing and communicates with the interior of the housing. The bracket is installed on the outer periphery of the hopper. The weighing sensor is installed at the upper end of the hopper and can make the soil particles enter the hopper after weighing the soil particles falling from the housing. The lower end of the hopper communicates with the lower end of the screw conveyor pipe, and the upper end of the screw conveyor pipe extends obliquely upward and is provided with a soil outlet. The transmission motor and the screw conveyor reducer are connected, and the screw conveyor reducer is connected to the lower end of the screw in the screw conveyor pipe.

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