A cohesive soil breaking device

Abstract

The application discloses a viscous soil crushing device and belongs to the technical field of crushing equipment, which comprises a crushing box, a recovery box, a gas supply assembly, a screening assembly and a controller, wherein the crushing box is used for containing soil blocks to be crushed, a crushing cavity and a plurality of material leakage holes are arranged on the crushing box; the recovery box is connected with the crushing box, and a recovery cavity for containing the crushing box is arranged on the recovery box; the gas supply assembly penetrates the recovery box and the crushing box in sequence and extends into the crushing cavity, and is used for providing high-pressure gas for crushing the soil blocks to be crushed; the screening assembly is communicated with the recovery box and is used for receiving and screening the crushed soil; and the controller is electrically connected with the gas supply assembly and the screening assembly. The viscous soil crushing device provided by the application solves the problems that the conditions required during crushing are not easy to realize, crushing operation is difficult, crushing effect is poor and efficiency is low, and the mechanical vibration or impact required during the crushing process has a relatively large impact on the environment, and the application has remarkable effects and is suitable for wide popularization.

Description

A clay crushing device Technical Field

[0001] This invention relates to the field of crushing equipment technology, and in particular to a clay crushing device. Background Technology

[0002] When lime and clay are mixed and crushed, the resulting clay particles are too large, and a large amount of limestone is needed, which is difficult to obtain in many areas such as Zhanjiang. Secondly, the crusher has limited capacity and low efficiency, making it difficult to use on-site. In addition, the toothed clay crusher relies on compression crushing, but the coastal sedimentary clay has high water content and strong plasticity, making it difficult to be crushed by compression. Impact crushers produce large particle sizes, with most particles exceeding 10mm and most having a diameter of 20mm. In engineering, clay needs to be crushed into particles with a maximum diameter of less than 2mm to be fully mixed with cement, hardeners, and other binding materials to serve as fill material. Moreover, existing crushers require strong mechanical vibration or impact during the mixing and crushing process, causing significant impact on the surrounding environment and buildings. Summary of the Invention

[0003] To address the aforementioned shortcomings, the present invention provides a cohesive soil crushing device that solves the problems of current technology, such as the difficulty in achieving the required crushing conditions, the difficulty in crushing operation, the poor crushing effect and low efficiency, and the significant environmental impact caused by the mechanical vibration or impact required during the crushing process.

[0004] This invention provides a device for crushing cohesive soil, comprising:

[0005] A crushing box is used to hold soil blocks to be crushed. The crushing box is equipped with a crushing chamber and several material leakage holes.

[0006] A recycling bin is connected to the crushing bin, and the recycling bin is provided with a recycling chamber for holding the crushing bin;

[0007] An air supply assembly extends into the crushing chamber through the recovery box and the crushing box in sequence, and is used to provide high-pressure gas for crushing the soil blocks to be crushed;

[0008] A screening component, connected to the recycling bin, is used to receive and screen the crushed soil.

[0009] The controller is electrically connected to both the gas supply assembly and the screening assembly.

[0010] Preferably, the crushing box comprises:

[0011] The bottom of the first box is connected to the recycling bin;

[0012] The first box wall is connected to the first box bottom, and a plurality of the material leakage holes are respectively provided on the first box bottom and the first box wall. The first box wall is provided with a first mounting hole for the air supply component to pass through.

[0013] The first cover is detachably connected to the end of the first box wall away from the bottom of the first box, and the crushing chamber is formed between the bottom of the first box, the first box wall and the first cover.

[0014] Preferably, the recycling bin includes;

[0015] The bottom of the second box is provided with a first support frame and a material guide port. The first support frame is connected to the crushing box and is used to support the crushing box. The material guide port is also connected to the recycling chamber and the screening assembly and is used to guide the crushed soil blocks into the screening assembly.

[0016] The second box wall is connected to the second box bottom. The second box wall is provided with a second mounting hole and a second support frame. The second mounting hole is used for the air supply component to pass through. The second support frame abuts against the crushing box and is used to limit the position of the crushing box.

[0017] The second cover is detachably connected to the end of the second box wall away from the bottom of the second box, and the recycling cavity is formed between the bottom of the second box, the second box wall and the second cover;

[0018] The support platform is connected to both the bottom of the second tank and the wall of the second tank. The bottom of the second tank passes through the support platform and is connected to the screening component. The controller and the air supply component are both mounted on the support platform.

[0019] Preferably, the gas supply assembly includes:

[0020] The gas cylinder is connected to the support platform;

[0021] A heating element, connected to the gas cylinder and electrically connected to the controller, is used to heat the gas output from the gas cylinder;

[0022] A pressure control valve is connected to the heating element and electrically connected to the controller;

[0023] The seal is formed by passing through both the crushing box and the recycling box, and engaging with the side of the recycling box away from the crushing box.

[0024] An air supply pipe has one end connected to the pressure control valve and the other end extending through the sealing plug into the crushing chamber.

[0025] A booster nozzle is connected to one end of the air supply pipe that extends into the crushing chamber.

[0026] Preferably, the screening component includes:

[0027] Several screening baskets are arranged side by side, and adjacent screening baskets are connected. Each screening basket is equipped with a screen, and the screening basket located at one end is connected to the recycling bin.

[0028] The drive frame is connected to several of the aforementioned screening baskets;

[0029] The receiving basket is connected to the screening basket located at the other end;

[0030] A limiting component is connected to the receiving basket and slidably connected to the drive frame. The limiting component is provided with a limiting hole that is adapted to the receiving basket, and the limiting component is also provided with a track that engages with the drive frame.

[0031] A drive assembly, connected to the drive frame, is used to drive the drive frame to slide along the track.

[0032] Preferably, the driving component includes:

[0033] The push frame is rotatably connected to the drive frame;

[0034] The drive rod is rotatably connected to the push frame;

[0035] A rotating wheel is connected to the drive rod, and the drive rod is parallel to and not collinear with the axis of the rotating wheel;

[0036] A screen drive, connected to the rotary wheel and electrically connected to the controller, is used to drive the rotary wheel to rotate.

[0037] Preferably, it further includes a spraying assembly, the spraying assembly comprising:

[0038] A storage tank, connected to the recovery tank, is used to store the curing agent;

[0039] A spray driver is connected to the liquid storage tank and the recovery tank;

[0040] The spray pipe has one end connected to the spray driver and the other end passing through the recycling box and the crushing box in sequence and extending into the crushing chamber.

[0041] A spray head is connected to one end of the spray pipe that extends into the crushing chamber, and several spray heads are provided.

[0042] Preferably, the mesh size of the screen on the side closer to the recycling bin is larger than that of the screen on the other side.

[0043] Preferably, the gas cylinder is filled with high-pressure carbon dioxide; the booster nozzle is a duckbill-shaped nozzle.

[0044] Preferably, the screening assembly further includes a lifting platform connected to the limiting member, the driving assembly, and the receiving basket, the lifting platform being used to adjust the relative position between the screening basket and the recycling bin.

[0045] As can be seen from the above scheme, the cohesive soil crushing device provided by this invention is a high-pressure liquid-gas fluid jet crushing device that uses high-pressure gas to crush clay through pressurized jetting. The high-pressure gas jetting directly applies shear force to the soil, avoiding energy consumption from large deformations, thereby improving crushing efficiency. The materials used in this device are readily available. High-pressure gas is supplied through the gas supply component to crush the soil, resulting in better crushing effect and higher crushing efficiency. Furthermore, the vibration generated during crushing is relatively small, minimizing its impact on the surrounding environment, and the device is easy to use. The crushed soil can be screened through the screening component. Larger soil particles are further crushed, and soil meeting the usage requirements can be directly used. This device can efficiently crush and screen soil that meets usage requirements. This invention solves the problems of existing technologies, such as the difficulty in achieving the required crushing conditions, the difficulty in crushing operation, poor crushing effect and low efficiency, and the significant environmental impact caused by the mechanical vibration or impact during crushing. It has a simple structure, significant effects, and is suitable for widespread application. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 is a schematic diagram of the structure of a cohesive soil crushing device provided by the present invention;

[0048] Figure 2 is a structural schematic diagram of the crushing box, spraying components and recovery box in a cohesive soil crushing device provided by the present invention;

[0049] Figure 3 is a schematic diagram of the air supply component in a cohesive soil crushing device provided by the present invention;

[0050] Figure 4 is a schematic diagram of the screening component in a cohesive soil crushing device provided by the present invention;

[0051] Figure 5 is an enlarged structural diagram of point A in Figure 4;

[0052] Figure 6 is a picture of the crushing box in a cohesive soil crushing device provided by the present invention;

[0053] Figure 7 is a picture of a cohesive soil crushing device provided by the present invention crushing soil blocks;

[0054] Figure 8 is a line graph showing the results of different particle sizes of soil residue obtained during the test of a cohesive soil crushing device provided by the present invention.

[0055] In the picture:

[0056] 1. Crushing box; 2. Recycling box; 3. Air supply assembly; 4. Screening assembly; 5. Controller; 6. Spraying assembly; 11. First box bottom; 12. First box wall; 13. First cover; 21. Second box bottom; 22. Second box wall; 23. Second cover; 24. Support platform; 31. Gas cylinder; 32. Heating element; 33. Pressure control valve; 34. Sealing plug; 35. Air supply pipe; 36. Boosting nozzle; 41. Screening basket; 42. Drive frame; 43. Receiving basket; 44. Limiting element; 45. 46. ​​Drive assembly; 47. Screen; 68. Lifting platform; 69. Liquid storage tank; 60. Spray driver; 61. Spray pipe; 62. Spray head; 111. Crushing chamber; 112. Material leakage hole; 121. First mounting hole; 211. Recovery chamber; 212. First support frame; 213. Material guide port; 221. Second mounting hole; 222. Second support frame; 441. Limiting hole; 442. Track; 451. Push frame; 452. Drive rod; 453. Rotary wheel; 454. Screen driver. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Please refer to Figures 1 to 8 together. A specific embodiment of the cohesive soil crushing device provided by the present invention will now be described. This cohesive soil crushing device includes a crushing box 1, a recovery box 2, an air supply component 3, a screening component 4, and a controller 5. The crushing box 1 is used to hold the soil blocks to be crushed, and the crushing box 1 is provided with a crushing chamber 111 and several material leakage holes 112. The recovery box 2 is connected to the crushing box 1, and the recovery box 2 is provided with a recovery chamber 211 for holding the crushing box 1. The air supply component 3 passes through the recovery box 2 and the crushing box 1 sequentially and extends into the crushing chamber 111 to provide high-pressure gas for crushing the soil blocks to be crushed. The screening component 4 is connected to the recovery box 2 and is used to receive and screen the crushed soil. The controller 5 is electrically connected to both the air supply component 3 and the screening component 4.

[0059] In this embodiment, the controller 5 is used to control the opening and closing of the air supply component 3 and the screening component 4, and can also keep track of time. The working time can be preset, and the air supply component 3 and the screening component 4 will be automatically shut off after the working time ends. The screening component 4 can be a shaking screen. The air supply component 3 can be a high-pressure liquid gas cylinder connected with a heating and pressure reducing valve. The material leakage hole 112 can be a 15mm long strip hole for spraying out fine soil particles.

[0060] Compared with existing technologies, this cohesive soil crushing device uses high-pressure gas to crush clay through pressurized injection. Injecting high-pressure gas directly applies shear force to the soil, avoiding energy consumption from large deformations and thus improving crushing efficiency. The device has a simple structure, is easy to operate, and uses readily available materials. High-pressure gas is supplied by the air supply component 3 to crush the soil, resulting in better crushing effect and higher efficiency. Furthermore, the vibration generated during crushing is minimal, minimizing its impact on the surrounding environment, and the device is easy to use. The screening component 4 allows for screening of the crushed soil. Larger particles are further crushed, and soil meeting usage requirements can be directly used. This device efficiently crushes and screens soil to meet specific requirements, offering convenient operation.

[0061] As another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiment, except that the crushing box 1 includes a first box bottom 11, a first box wall 12, and a first cover 13, wherein the first box bottom 11 is connected to the recovery box 2; the first box wall 12 is connected to the first box bottom 11, and a plurality of material leakage holes 112 are respectively provided on the first box bottom 11 and the first box wall 12, and the first box wall 12 is provided with a first mounting hole 121 for the air supply component 3 to pass through; the first cover 13 is detachably connected to the end of the first box wall 12 away from the first box bottom 11, and a crushing chamber 111 is formed between the first box bottom 11, the first box wall 12, and the first cover 13.

[0062] As another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiments, except that the recovery box 2 includes a second box bottom 21, a second box wall 22, a second cover 23, and a support platform 24. The second box bottom 21 is provided with a first support frame 212 and a guide port 213. The first support frame 212 is connected to the crushing box 1 and is used to support the crushing box 1. The guide port 213 is simultaneously connected to the recovery chamber 211 and the screening assembly 4, and is used to guide the crushed soil blocks into the screening assembly 4. The second box wall 22 is connected to the second box bottom 21, and the second box... The wall 22 is provided with a second mounting hole 221 and a second support frame 222. The second mounting hole 221 is used for the air supply component 3 to pass through, and the second support frame 222 abuts against the crushing box 1 to limit the crushing box 1. The second cover 23 is detachably connected to the end of the second box wall 22 away from the second box bottom 21. A recycling chamber 211 is formed between the second box bottom 21, the second box wall 22 and the second cover 23. The support platform 24 is connected to both the second box bottom 21 and the second box wall 22. The second box bottom 21 passes through the support platform 24 and is connected to the screening component 4. The controller 5 and the air supply component 3 are both set on the support platform 24.

[0063] In this embodiment, the second box bottom 21 is a rectangular cylindrical structure, and the cross-sectional area of ​​the opening on the side near the second box wall 22 is larger than the cross-sectional area on the other side. That is, the second box bottom 21 is an axisymmetric funnel-shaped structure, which can collect and guide the soil leaking from the leakage hole 112 into the screening component 4. The support platform 24 is provided with a through hole that engages with the second box bottom 21.

[0064] As another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiments, except that the air supply component 3 includes a gas cylinder 31, a heating element 32, a pressure control valve 33, a sealing plug 34, an air supply pipe 35, and a booster nozzle 36. The gas cylinder 31 is connected to the support platform 24; the heating element 32 is connected to the gas cylinder 31 and electrically connected to the controller 5, and is used to heat the gas output from the gas cylinder 31; the pressure control valve 33 is connected to the heating element 32 and electrically connected to the controller 5; the sealing plug 34 passes through both the crushing chamber 1 and the recovery chamber 2, and engages with the side of the recovery chamber 2 away from the crushing chamber 1; one end of the air supply pipe 35 is connected to the pressure control valve 33, and the other end passes through the sealing plug 34 and extends into the crushing chamber 111; the booster nozzle 36 is connected to the end of the air supply pipe 35 that extends into the crushing chamber 111.

[0065] In this embodiment, the pressure control valve 33 can be a full-copper pressure reducing valve with a range of 2.5 MPa and an adjustable output gas pressure between 0 and 1.5 MPa. It is used to control the specific pressure value of the gas injected by the booster nozzle 36. Within a certain pressure adjustment range, its control force can reach its highest performance, ensuring that the flow rate does not exceed the standard range, thus preventing safety issues. The heating element 32 is used to prevent the liquefaction of high-pressure carbon dioxide. Liquefied carbon dioxide easily causes soil clods to freeze, affecting the crushing effect. Furthermore, liquid carbon dioxide has an extremely low temperature, easily causing personnel to have their fingers and skin frozen. Using the heating element 32 to heat the carbon dioxide gas effectively avoids these problems. The combined use of the heating element 32 and the pressure control valve 33 can alleviate the situation where carbon dioxide liquefies on the clay, causing the clay to harden, and the phenomenon of reduced gas pressure due to pipe hardening. Therefore, anything that can achieve the aforementioned performance functions of the heating element 32 and the pressure control valve 33 is within the scope of protection of this application.

[0066] In this embodiment, the gas filled in cylinder 31 is high-pressure carbon dioxide. For example, cylinder 31 is a 40-liter carbon dioxide cylinder with a pressure between 150 and 200 bar. Carbon dioxide cylinders are commonly used in industry due to their low cost. Furthermore, the directional release of carbon dioxide does not damage the surrounding environment or produce harmful gases. The high-pressure carbon dioxide cylinder meets the gas requirements for soil crushing, and the pressure-resistant steel cylinder provides sufficient pressure for cutting and crushing the soil. The booster nozzle 36 is a duckbill-shaped nozzle, which increases the gas pressure. This nozzle reduces the area of ​​carbon dioxide sprayed onto the soil, concentrating the force on the localized area of ​​the clay and thus more efficiently crushing the soil. The fan-shaped duckbill nozzle also has high impact resistance and can withstand high-pressure spray when connected to the carbon dioxide cylinder. The stainless steel duckbill nozzle allows for water pressure control within the machine body, thus determining the spray range. For example, a 1 / 4-inch duckbill nozzle with a 1mm slit is used.

[0067] In this embodiment, the sealing plug 34 is made of an elastic material and includes a sealing layer and a movable layer. The sealing layer is a relatively hard elastic material and is used to connect and seal with the crushing box 1 and the recycling box 2. The movable layer is a relatively soft elastic material and is used to fix the air supply pipe 35 and facilitate the rotation of the air supply pipe 35.

[0068] As another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiment, except that the screening component 4 includes a screening basket 41, a drive frame 42, a receiving basket 43, a limiting member 44, and a drive component 45. Several screening baskets 41 are arranged side by side, and adjacent screening baskets 41 are connected. Each screening basket 41 is provided with a screen 46. The screening basket 41 at one end is connected to the recycling box 2. The drive frame 42 is connected to several screening baskets 41 at the same time. The receiving basket 43 is connected to the screening basket 41 at the other end. The limiting member 44 is connected to the receiving basket 43 and slidably connected to the drive frame 42. The limiting member 44 is provided with a limiting hole 441 that is adapted to the receiving basket 43. The limiting member 44 is also provided with a track 442 that engages with the drive frame 42. The drive component 45 is connected to the drive frame 42 and is used to drive the drive frame 42 to slide along the track 442.

[0069] In this embodiment, the mesh size of the screen 46 on the side closer to the recycling bin 2 is larger than that of the screen 46 on the other side. The screening assembly 4 also includes a lifting platform 47 connected to the limiting member 44, the drive assembly 45, and the collection basket 43. The lifting platform 47 can be a cylinder, used to adjust the relative position between the screening basket 41 and the recycling bin 2. After the lifting platform 47 moves the screening basket 41 away from the recycling bin 2, the unscreened soil collected directly can be observed, and the screening basket 41 can be easily removed for soil collection, sampling, and other operations. The screens 46 are installed in the screening basket 41 according to the size of the screen holes (larger holes on top, smaller holes on the bottom). The drive frame 42 is provided with several protrusions for engaging with the screening basket 41.

[0070] In another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiments, except that the drive assembly 45 includes a push frame 451, a drive rod 452, a rotating wheel 453, and a screening driver 454. The push frame 451 is rotatably connected to the drive frame 42; the drive rod 452 is rotatably connected to the push frame 451; the rotating wheel 453 is connected to the drive rod 452, and the axial directions of the drive rod 452 and the rotating wheel 453 are parallel but not collinear, i.e., the drive rod 452 is eccentrically positioned on the rotating wheel 453; the screening driver 454 is connected to the rotating wheel 453 and electrically connected to the controller 5, and is used to drive the rotating wheel 453 to rotate. The axial direction of the rotating wheel 453 is perpendicular to the direction of movement of the drive frame 42. The screening driver 454 can be a motor, which drives the rotating wheel 453 to rotate, thereby causing the drive rod 452 and the push frame 451 to move, and thus causing the drive frame 42 to reciprocate along the track 442.

[0071] As another embodiment of the present invention, the structure of this cohesive soil crushing device is basically the same as that in the above embodiments, except that the device further includes a spraying assembly 6. The spraying assembly 6 includes a storage tank 61, a spraying driver 62, a spraying pipe 63, and a spraying head 64. The storage tank 61 is connected to the recovery tank 2 and is used to store the curing agent. The spraying driver 62 is connected to the storage tank 61 and the recovery tank 2. One end of the spraying pipe 63 is connected to the spraying driver 62, and the other end passes through the recovery tank 2 and the crushing tank 1 in sequence and extends into the crushing chamber 111. The spraying head 64 is connected to one end of the spraying pipe 63 that extends into the crushing chamber 111, and there are several spraying heads 64.

[0072] Because clay has a high water content, when it is crushed, the released water interacts with the soil to form bound water. The bound water between adjacent soil particles then binds together, forming a common hydration film, making it difficult to break the clay into particles. Furthermore, the influence of other gravitational factors within the soil further complicates particle separation. When crushing cohesive soil into smaller particles, it is necessary to increase the interparticle spacing and simultaneously solidify the soil. A hardener can alter the friction coefficient of soil particles, making it difficult for them to re-agglomerate after crushing and revert to clumps. The hardener is a colorless, transparent liquid material that is easy to use, non-toxic, non-flammable, and highly permeable. It permanently seals concrete, and according to VOCs, a regular concrete density hardener can increase soil abrasion resistance by 6-10 times. Compared to some water-based materials, hardeners are more efficient at increasing hardness and can shorten construction time. Atomizing the hardener allows for more even contact with each soil particle.

[0073] In this embodiment, the crushing box 1 is a box body made of several pieces of plexiglass bonded together with 502 adhesive. This plexiglass can withstand the high-pressure gas ejected from the carbon dioxide cylinder without breaking, and the transparent material allows for easy observation of the crushing process so that adjustments can be made at any time. The crushing box 1 can be a square container without a top. The material leakage hole 112 can be a gap of 0.05cm set on three sides and the bottom of the container. The setting of the material leakage hole 112 allows the crushed soil particles to fly out freely in various spray directions and angles (side, bottom, etc.) when the gas is sprayed. The first mounting hole 121 can be a 10mm×10mm opening at the front of the container. The setting of the first mounting hole 121 facilitates the insertion of the gas supply pipe 35 into the container and provides sufficient space for left and right rotation. The recycling box 2 can be made of plastic.

[0074] For example, a clay block with a moisture content of 15% was prepared, and the prepared clay block was crushed into soil particles smaller than 2 mm using a clay crushing device for testing. The test materials included: an oven, soil sample, water, and a mixer.

[0075] The specific experimental steps include:

[0076] S1. Place the soil sample in an oven and dry it at a temperature of (105 ± 5)℃ to constant weight to obtain a dry soil sample. After cooling to room temperature, sieve out particles larger than 9.50 mm, take 420g of the dried soil and put it into a mixer, add 63g of water, and stir to mix the water and soil evenly to obtain soil with a moisture content of 15%.

[0077] S2. Pour the mixed water-containing soil into an acrylic glass container, gently tap the container to remove gaps, and ensure that the soil clods fill the container evenly and tightly. Use an appropriate method to compact the soil clods to achieve a soil density close to that of the natural state, and obtain water-containing soil clods that meet the requirements. Weigh the soil clods and find that the weight of the soil clods is 460.2 grams.

[0078] S3. Place the complete soil block into the crushing box 1, and then put the crushing box 1 into the recycling box 2. The recycling box 2 is used to collect soil particles to prevent soil particles from being sprayed out.

[0079] S4. Connect the gas cylinder 31 containing carbon dioxide gas to the gas supply pipe 35, and install the booster nozzle 36 at the other end of the gas supply pipe 35.

[0080] S5. Insert the air supply pipe 35 into the crushing chamber 111 from the second mounting hole 221 of the recycling box 2, ensure that the pressure nozzle 36 is aligned with the bottom layer of soil, open the pressure control valve 33 to spray carbon dioxide gas, and control the screening component 4 to start through the controller 5.

[0081] First, the bottom layer of soil is broken. Due to gravity, the soil clods will sink. Then, another layer is broken, and so on, so that the soil clods are broken layer by layer. During this process, the soil particles will be flushed out of the soil clods by carbon dioxide gas and fall into the screening component 4 through the crushing box 1 and the recycling box 2 for screening. The top layer of the screening component 4 uses a 9.50mm mesh screen 46, and the mesh size of the subsequent screens 46 gradually decreases.

[0082] S6. After the test has lasted for a period of time, close the pressure control valve 33 and weigh the soil particles screened by different mesh screens 46 in the screening component 4.

[0083] Experimental results: 7g of soil particles smaller than 0.075mm were obtained; 226.6g of particles with a diameter between 0.075-0.3mm were obtained; 66.1g of particles with a diameter between 0.3-0.6mm were obtained; 16.4g of particles with a diameter between 0.6-1.18mm were obtained; 3g of particles with a diameter between 1.18-2.36mm were obtained; 20.7g of particles with a diameter between 2.36-4.75mm were obtained; 65.2g of particles with a diameter between 4.75-9.5mm were obtained; and 53.4g of particles with a diameter greater than 9.5mm were obtained. The overall crushing rate was 67.82%. Therefore, this type of cohesive soil crushing device has the following beneficial effects:

[0084] 1. Non-explosive: Compared with traditional soil blasting technology, using gas fracturing can avoid the use of explosives or the side effects of triggering seismic waves, thus reducing the impact on the environment and surrounding buildings and increasing operational safety;

[0085] 2. Vibration-free: Gas breaking does not require mechanical vibration or impact to break up soil blocks, thus reducing vibration and noise impact on surrounding structures, which is particularly useful in situations where the surrounding environment and buildings need to be protected;

[0086] 3. Precise control: Using gas crushing allows for precise control of soil clod crushing, which can be customized for specific soil characteristics and requirements, thus avoiding problems of over-crushing or under-crushing;

[0087] 4. Fast and efficient: Gas crushing can be completed in a short time, improving work efficiency. In addition, it can be applied to soil clods of different types and sizes, and is suitable for soil treatment needs in various construction and civil engineering projects.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for crushing cohesive soil, characterized in that, include: A crushing box (1) is used to hold soil blocks to be crushed. The crushing box (1) is provided with a crushing chamber (111) and several material leakage holes (112). A recycling box (2) is connected to the crushing box (1). The recycling box (2) is provided with a recycling chamber (211) for holding the crushing box (1). An air supply component (3) extends through the recycling box (2) and the crushing box (1) and into the crushing chamber (111) to provide high-pressure gas for crushing the soil blocks to be crushed. A screening component (4) is connected to the recycling box (2) to receive and screen the crushed soil. A controller (5) is electrically connected to both the air supply component (3) and the screening component (4). A spraying component (6) includes a liquid storage tank (61) connected to the recycling box (2) for storing a curing agent. A spray driver (62) is connected to the liquid storage tank (61) and the recovery tank (2); a spray pipe (63) is connected at one end to the spray driver (62) and at the other end to pass through the recovery tank (2) and the crushing tank (1) and extend into the crushing chamber (111); a spray head (64) is connected to one end of the spray pipe (63) that extends into the crushing chamber (111), and there are several spray heads (64).

2. The cohesive soil crushing device according to claim 1, characterized in that, The crushing box (1) includes: a first box bottom (11) connected to the recycling box (2); a first box wall (12) connected to the first box bottom (11), a plurality of the material leakage holes (112) respectively provided on the first box bottom (11) and the first box wall (12), and the first box wall (12) is provided with a first mounting hole (121) for the air supply component (3) to pass through; a first cover (13) detachably connected to the end of the first box wall (12) away from the first box bottom (11), and the crushing chamber (111) is formed between the first box bottom (11), the first box wall (12) and the first cover (13).

3. The cohesive soil crushing device according to claim 2, characterized in that, The recycling box (2) includes: a second box bottom (21) with a first support frame (212) and a guide port (213) on it; the first support frame (212) is connected to the crushing box (1) and is used to support the crushing box (1); the guide port (213) is connected to the recycling chamber (211) and the screening assembly (4) and is used to guide the crushed soil into the screening assembly (4); a second box wall (22) connected to the second box bottom (21); the second box wall (22) has a second mounting hole (221) and a second support frame (222); the second mounting hole (221) is used for the air supply assembly (3) to pass through. The second support frame (222) abuts against the crushing box (1) and is used to limit the crushing box (1); the second cover (23) is detachably connected to the end of the second box wall (22) away from the second box bottom (21), and the second box bottom (21), the second box wall (22) and the second cover (23) form the recycling chamber (211); the support platform (24) is connected to both the second box bottom (21) and the second box wall (22), and the second box bottom (21) passes through the support platform (24) and is connected to the screening component (4), and the controller (5) and the air supply component (3) are both set on the support platform (24).

4. The cohesive soil crushing device according to claim 3, characterized in that, The gas supply assembly (3) includes: a gas cylinder (31) connected to the support platform (24); a heating element (32) connected to the gas cylinder (31) and electrically connected to the controller (5) for heating the gas output from the gas cylinder (31); a pressure control valve (33) connected to the heating element (32) and electrically connected to the controller (5); a sealing plug (34) that passes through both the crushing chamber (1) and the recovery chamber (2) and engages with the side of the recovery chamber (2) away from the crushing chamber (1); a gas supply pipe (35) with one end connected to the pressure control valve (33) and the other end passing through the sealing plug (34) and extending into the crushing chamber (111); and a booster nozzle (36) connected to the end of the gas supply pipe (35) extending into the crushing chamber (111).

5. The cohesive soil crushing device according to claim 4, characterized in that, The screening component (4) includes: a screening basket (41), several of which are arranged side by side and connected to each other, and each screening basket (41) is provided with a screen (46), and the screening basket (41) at one end is connected to the recycling bin (2); a drive frame (42), which is connected to several screening baskets (41); a receiving basket (43), which is connected to the screening basket (41) at the other end; a limiting member (44), which is connected to the receiving basket (43) and slidably connected to the drive frame (42), and the limiting member (44) is provided with a limiting hole (441) adapted to the receiving basket (43), and the limiting member (44) is also provided with a track (442) that engages with the drive frame (42); and a drive component (45), which is connected to the drive frame (42) and is used to drive the drive frame (42) to slide along the track (442).

6. The cohesive soil crushing device according to claim 5, characterized in that, The drive assembly (45) includes: a push frame (451) rotatably connected to the drive frame (42); a drive rod (452) rotatably connected to the push frame (451); a rotating wheel (453) connected to the drive rod (452), wherein the drive rod (452) and the rotating wheel (453) are axially parallel and not collinear; and a screening driver (454) connected to the rotating wheel (453) and electrically connected to the controller (5) for driving the rotating wheel (453) to rotate.

7. A cohesive soil crushing device according to claim 6, characterized in that, The mesh size of the screen (46) on the side closer to the recycling bin (2) is larger than that of the screen (46) on the other side.

8. The cohesive soil crushing device according to claim 7, characterized in that, The gas cylinder (31) is filled with high-pressure carbon dioxide; the booster nozzle (36) is a duckbill-shaped nozzle.

9. A cohesive soil crushing device according to claim 8, characterized in that, The screening assembly (4) also includes a lifting platform (47) connected to the limiting member (44), the driving assembly (45) and the receiving basket (43) at the same time. The lifting platform (47) is used to adjust the relative position between the screening basket (41) and the recycling box (2).

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