Automatic lime-dirt screen

Abstract

The application relates to the technical field of lime-soil crushing and screening machines, and particularly discloses an automatic lime-soil crushing and screening machine which comprises a soil screening machine main body, a screening cylinder, a crushing and screening mechanism, and the like.

Description

Technical Field

[0001] This invention relates to the field of soil crushing and screening machines, specifically an automatic soil crushing and screening machine. Background Technology

[0002] Lime-soil is a traditional building material in northern China. Also known as lime soil, it is made by mixing quicklime and sandy clay in layers and compacting them. In recent years, with the rapid development of the national economy, the construction speed of high-grade highways has greatly accelerated. The construction of high-grade highways requires a large amount of roadbed lime-soil. The general construction process is as follows: quicklime is added to the soil source → reducing soil moisture content → mixing the quicklime-soil mixture → transporting it to the roadbed → crushing and drying the mixture → lime dosage testing (if the lime dosage is insufficient, it is mixed again) → leveling and compacting. Workers spread quicklime on the ground and use excavators to cover it with soil to hydrate it. This effectively utilizes the lime's slaking process to reduce soil moisture content and the heat dissipation during slaking to prevent freezing. After a period of slaking, the quicklime slakes into hydrated lime. Workers then use excavators to mix the soil with the hydrated lime to produce lime-soil.

[0003] However, when workers use excavators to mix soil with quicklime, digging too deep increases the proportion of soil. Due to the stickiness of the soil, excess soil and a small amount of quicklime accumulate into small clumps during the mixing process. When the mixed soil and lime are transported to the roadbed, large stones are typically removed using a soil screening machine. This process causes the screening machine to also separate the accumulated soil clumps, requiring workers to collect and manually break them up, increasing their workload. Therefore, we propose an automatic soil and lime crushing and screening machine. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic ash and soil crushing and screening machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic ash and soil crushing and screening machine, comprising a main body of the screening machine; a screen cylinder located inside the main body of the screening machine, with an inclined groove at one end of the screen cylinder; and a crushing and screening mechanism located outside the screen cylinder, which is capable of crushing the ash and soil blocks screened out by the screen cylinder and separating them from the stones.

[0006] Preferably, the crushing and screening mechanism includes a lower support plate and an upper pressure plate located outside the screen cylinder. The lower support plate is slidably connected to the inner wall of the main body of the soil screening machine. The inner wall of the upper pressure plate is provided with an auxiliary component that can add quicklime below the upper pressure plate according to the weight change of the upper pressure plate. A guide pipe is fixedly connected to the end of the lower support plate away from the screen cylinder. A blocking component that can block the lower support plate is provided at the end of the lower support plate near the guide pipe. A driving component that can drive the lower support plate and the upper pressure plate to move is provided on the outer side of the lower support plate and the upper pressure plate.

[0007] Preferably, the auxiliary components include multiple connecting holes located on the inner wall of the upper pressure plate, the inner wall of the connecting holes is provided with a sealing component that can block the connecting holes, a storage compartment is provided above the connecting holes, a tension sensor is fixedly connected above the storage compartment, a support box is fixedly connected above the tension sensor, the support box is slidably connected to the inner wall of the soil screening machine body, and the support box is connected to the drive component.

[0008] Preferably, the sealing element includes a sealing plate located on the inner wall of the connecting hole, the sealing plate being rotatably connected to the inner wall of the upper pressure plate, the inner wall of the sealing plate having a connecting groove, the sealing plate having a clearing element on the side near the connecting groove that can clear the connecting hole, and a transmission element above the sealing plate that can simultaneously drive the two sealing plates to rotate.

[0009] Preferably, the unblocking component includes a top column located on the inner wall of the sealing plate, and the inner wall of the sealing plate has a placement groove that can be slidably connected to the top column. A spring plate is fixedly connected to one end of the top column near the placement groove, and one end of the spring plate is fixedly connected to the inner wall of the placement groove.

[0010] Preferably, the transmission component includes a transmission gear one that is fixedly connected to two closed plates respectively, a transmission chain one that meshes with the outer side of the transmission gear one, a drive gear one that meshes with the inner side of any one of the transmission gears one, the drive gear one that is rotatably connected to the inner wall of the upper pressure plate, and a rotary motor that is fixedly connected to the outer side of the drive gear one. The rotary motor is fixedly connected to the inner wall of the upper pressure plate.

[0011] Preferably, the shielding component includes a baffle located at one end of the lower support plate. The baffle is slidably connected to the inner wall of the guide tube. A lower drain hole is provided on the inner wall of the baffle. A rotating rod is fixedly connected to the center of one end of the baffle. Both ends of the rotating rod are rotatably connected to the inner wall of the guide tube. A transmission gear two is fixedly connected to one end of the rotating rod through the inner wall of the guide tube. A transmission chain two meshes with the outer side of the transmission gear two. A transmission gear three meshes with the inner side of one end of the transmission chain two. A drive gear two meshes with the outer side of the transmission gear three. The drive gear two is rotatably connected to the inner wall of the lower support plate. A drive motor is fixedly connected to one end of the drive gear two. The drive motor is fixedly connected to the inner wall of the lower support plate.

[0012] Preferably, the driving component includes a connecting rod that is fixedly connected to the lower support plate and the outer side of the support box, respectively. A return spring is fixedly connected to the outer side of the connecting rod. One end of the return spring is fixedly connected to the inner wall of the soil screening machine body. The connecting rod is slidably connected to the inner wall of the soil screening machine body. A trapezoidal block is fixedly connected to the end of the connecting rod near the screen cylinder. The trapezoidal block is slidably connected to the inner wall of the soil screening machine body. A trapezoidal block is slidably connected to the outer side of the trapezoidal block. A moving block is fixedly connected to one end of the trapezoidal block. The moving block is slidably connected to the inner wall of the soil screening machine body. Return springs are fixedly connected to both sides of the moving block. One end of the return spring is fixedly connected to the inner wall of the soil screening machine body. A toothed ring is slidably connected to the end of the moving block near the screen cylinder. The toothed ring is fixedly connected to the screen cylinder.

[0013] Preferably, the lower support plate and the upper pressure plate have an inclined surface on the side that is close to each other.

[0014] Preferably, the moving block has an inclined end near the toothed ring.

[0015] The present invention has at least the following beneficial effects:

[0016] In use, the screen cylinder allows large pieces of gravel and soil to be fed into the crushing and screening mechanism via an inclined chute. The crushing and screening mechanism breaks down the screened soil and sends the crushed ash and soil to the discharge point of the main body of the soil screening machine. Compared with the existing technology, when the soil screening machine screens stones, it also screens the accumulated ash and soil lumps, requiring workers to collect the soil lumps and crush them manually, increasing the workload of workers. The crushing and screening mechanism of this application can vibrate and compress the soil lumps and stones to facilitate the crushing of the soil lumps. Furthermore, when the soil lumps are crushed and the soil is too sticky and adheres to the crushing mechanism, the crushing and screening mechanism can add a small amount of quicklime to the soil. The quicklime mixes with the soil, allowing it to absorb the moisture in the soil and transform into slaked lime. As the soil moisture decreases, the stickiness decreases, making it easier to mix with the slaked lime to form ash and soil. This eliminates the need for manual crushing and reduces the workload of workers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic front view of the crushing and screening mechanism of the present invention;

[0019] Figure 3 This is a schematic front view of the structural driving component of the present invention;

[0020] Figure 4 This is a side view of the lower support plate of the present invention.

[0021] Figure 5 This is a top sectional view of the shielding component of the present invention;

[0022] Figure 6 This is a side sectional view of the pressure plate of the structure of the present invention;

[0023] Figure 7 This is a bottom sectional view of the enclosed plate of the present invention;

[0024] Figure 8 This is a side sectional view of the closed plate of the present invention;

[0025] Figure 9 This is a bottom view of the rubber column structure of the present invention.

[0026] In the diagram: 1-Main body of the soil screening machine; 2-Screen cylinder; 3-Inclined chute; 4-Screening and crushing mechanism; 40-Lower support plate; 41-Upper pressure plate; 42-Auxiliary component; 43-Guide pipe; 44-Blocking component; 45-Drive component; 46-Connecting hole; 47-Sealing component; 48-Storage bin; 49-Tension sensor; 410-Support box; 411-Sealing plate; 412-Connecting chute; 413-Dredging component; 414-Transmission component; 415-Top column; 416-Placement chute; 417-Spring plate; 418-Transmission gear one; 419-Transmission chain one; 420-Driving gear one; 421-Rotary motor; 422-Baffle; 423-Lower drain hole; 424-Rotating rod; 425-Transmission gear two; 426-Transmission chain two; 427-Transmission gear three; 428-Driving gear two; 429-Drive motor; 430-Connecting rod; 431-Reset spring one; 432-Trapezoidal block one; 433-Trapezoidal block two; 434-Moving block; 435-Reset spring two; 436-Gear ring; 437-Slanted end; 5-Rubber column. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-9 The present invention provides a technical solution:

[0029] Example 1

[0030] An automatic soil crushing and screening machine includes a main body 1; a screen cylinder 2 located inside the main body 1, with an inclined groove 3 at one end; and a crushing and screening mechanism 4 located outside the screen cylinder 2. The crushing and screening mechanism 4 can crush the soil lumps screened out by the screen cylinder 2 and separate them from the stones. In use, workers use an excavator to dig the stockpiled soil to the top of the main body 1 and pour it into the main body 1. The main body 1 then feeds the soil into the screen cylinder 2, which rotates the screen cylinder 2. The rotating screen cylinder 2 screens the soil, and the soil particles fall from inside the screen cylinder 2 into the main body 1. The soil clods and gravel inside the screen cylinder 2 move to the inclined chute 3 under the action of centrifugal force at the discharge port of body 1. They slide into the crushing and screening mechanism 4 through the inclined chute 3. The crushing and screening mechanism 4 can vibrate and squeeze the soil clods and gravel to crush them. When the soil clods are crushed and the soil is too sticky and adheres to the crushing mechanism, a small amount of quicklime can be added to the soil through the crushing and screening mechanism 4. The quicklime absorbs the water in the soil and turns into hydrated lime. After the soil moisture decreases, the stickiness decreases so that it can be mixed with the hydrated lime to form lime-soil mixture.

[0031] The crushing and screening mechanism 4 includes a lower support plate 40 and an upper pressure plate 41 located outside the screen cylinder 2. The lower support plate 40 and the upper pressure plate 41 have an inclined surface on their adjacent sides. The lower support plate 40 is slidably connected to the inner wall of the soil screening machine body 1. The inner wall of the upper pressure plate 41 is provided with an auxiliary component 42 that can add quicklime below the upper pressure plate 41 according to the weight change of the upper pressure plate 41. A guide pipe 43 is fixedly connected to the end of the lower support plate 40 away from the screen cylinder 2. A blocking component 44 that can block the lower support plate 40 is provided at the end of the lower support plate 40 near the guide pipe 43. A driving component 45 that can move the lower support plate 40 and the upper pressure plate 41 is provided on the outer side of the lower support plate 40 and the upper pressure plate 41. When the crushing and screening mechanism 4 is working... The screen cylinder 2 rotates, feeding crushed stone and soil clods onto the lower support plate 40. The rotation of the screen cylinder 2 drives the drive component 45, which in turn causes the lower support plate 40 and the upper pressure plate 41 to slide back and forth horizontally. Because the sides of the lower support plate 40 and the upper pressure plate 41 that are close together are inclined, the distance between the lower support plate 40 and the upper pressure plate 41 decreases when they approach each other, thus compressing and crushing the soil clods above the lower support plate 40. When the lower support plate 40 and the upper pressure plate 41 move away from each other, the crushed soil clods and crushed stone between them vibrate under the movement of the lower support plate 40. The blocking component 44 blocks the crushed stone. The crushed soil particles enter the guide pipe 43 through the shield 44, and are guided to the discharge point inside the main body 1 of the soil screening machine through the guide pipe 43. If there is a lot of moisture in the soil, some of the compressed soil will stick to the surface of the upper pressure plate 41. When there is a lot of soil adhering to the surface of the upper pressure plate 41, a small amount of quicklime powder can be added below the upper pressure plate 41 through the auxiliary component 42. The quicklime powder mixes with the soil, causing the quicklime powder to react with the moisture in the soil, and the quicklime is converted into hydrated lime. As the moisture in the soil decreases, the stickiness decreases, and the hydrated lime mixes with the soil to form lime-soil particles. The lime-soil particles are distributed on the lower support plate 40 and the upper pressure plate 41. When the machine vibrates, it rubs against the surface of the crushed stone to remove the soil from the surface of the crushed stone. When the worker finishes emptying the ash and soil from one bucket and continues to dig the next bucket, no more ash and soil to be screened enters the screen cylinder 2. The screen cylinder 2 sends the remaining crushed stone and soil between the lower support plate 40 and the upper pressure plate 41. The soil is crushed by the squeezing of the lower support plate 40 and the upper pressure plate 41. The blocking part 44 no longer blocks the lower support plate 40. The crushed stone and the remaining ash and soil particles move outward under the vibration of the lower support plate 40. The crushed stone is discharged outside the main body 1 of the soil screening machine through the blocking part 44, and the ash and soil particles fall into the guide pipe 43 from the blocking part 44 and enter the discharge point of the main body 1 of the soil screening machine.

[0032] The auxiliary component 42 includes multiple connecting holes 46 located on the inner wall of the upper pressure plate 41. The inner wall of each connecting hole 46 is provided with a sealing element 47 that can block the connecting holes 46. A storage chamber 48 is located above the connecting holes 46 and stores quicklime. When the upper pressure plate 41 shakes, the quicklime in the storage chamber 48 also shakes, thus preventing the quicklime from reacting with moisture in the air and accumulating, thus preventing it from falling through the connecting holes 46. A tension sensor 49 is fixedly connected above the storage chamber 48, and a support box 410 is fixedly connected above the tension sensor 49. The support box 410 controls the upper pressure plate 41. The limiting position allows the support box 410 and the upper pressure plate 41 to move synchronously, reducing the vibration between the support box 410 and the upper pressure plate 41. The support box 410 is slidably connected to the inner wall of the soil screening machine body 1. The support box 410 is connected to the drive component 45. When the auxiliary component 42 is working, when a lot of soil adheres to the surface of the upper pressure plate 41, the tension of the upper pressure plate 41 on the tension sensor 49 increases. When the tension increases to a certain level, it drives the sealing component 47 to work. The sealing component 47 releases the seal on the two connecting holes 46, allowing the quicklime in the storage bin 48 to fall below the upper pressure plate 41 through the connecting holes 46.

[0033] The sealing member 47 includes a sealing plate 411 located on the inner wall of the connecting hole 46. The sealing plate 411 is slidably connected to the inner wall of the connecting hole 46 and rotatably connected to the inner wall of the upper pressure plate 41. A connecting groove 412 is provided on the inner wall of the sealing plate 411. A clearing member 413 capable of clearing the connecting hole 46 is provided on the side of the sealing plate 411 near the connecting groove 412. A transmission member 414 capable of simultaneously driving the two sealing plates 411 to rotate is provided above the sealing plate 411. When the sealing member 47 is working, the transmission member 414 drives the sealing plate 411 to rotate, and the sealing plate 411 drives the clearing member 413 and the connecting groove 412 to move, so that the clearing member 413 first passes through the connecting hole 46 and clears the lower end of the connecting hole 46 through the clearing member 413, thereby preventing soil from being blocked. The connecting hole 46 is blocked. As the sealing plate 411 rotates, the unblocking component 413 separates from the connecting hole 46. The connecting groove 412 moves to the position corresponding to the connecting hole 46. The quicklime in the storage chamber 48 falls through the connecting hole 46 in the connected state. After the connecting groove 412 slides past the connecting hole 46, the sealing plate 411 closes the connecting hole 46 again to control the amount of quicklime added and prevent excessive addition of quicklime. If the tension of the upper pressure plate 41 on the tension sensor 49 is still greater than the predetermined value after a period of time, the sealing plate 411 is rotated again by the driving component 45 to add a small amount of quicklime below the upper pressure plate 41 to prevent excessive moisture in the broken soil from causing the soil to stick to the surface of the upper pressure plate 41 and the lower support plate 40.

[0034] The unblocking component 413 includes a top post 415 located on the inner wall of the sealing plate 411. The inner wall of the sealing plate 411 has a placement groove 416 that can slide with the top post 415. A spring plate 417 is fixedly connected to one end of the top post 415 near the placement groove 416. One end of the spring plate 417 is fixedly connected to the inner wall of the placement groove 416. The top post 415 has an arc-shaped end away from the placement groove 416. When the top post 415 moves to the position corresponding to the connecting groove 412, the spring plate 417, which is in a compressed state, pushes the top post 415 to slide outward along the inner wall of the placement groove 416. The top post 415 slides to cooperate in unblocking the connecting hole 46. As the sealing plate 411 continues to rotate, the inner wall of the connecting hole 46 squeezes the arc-shaped end of the top post 415 to cooperate in pushing the top post 415 to slide along the inner wall of the placement groove 416 and compressing the spring plate 417, thereby completing the storage of the top post 415.

[0035] Transmission component 414 includes transmission gears 418 fixedly connected to two closed plates 411 respectively. Transmission gears 418 are rotatably connected to the inner wall of the upper pressure plate 41. A transmission chain 419 meshes with the outer side of transmission gears 418. A drive gear 420 meshes with the inner side of either transmission gear 418. The drive gear 420 is rotatably connected to the inner wall of the upper pressure plate 41. The drive gear 420 and transmission gears 418 have different dimensions to control the rotation angle of the closed plates 411. A rotary motor 421 is fixedly connected to the outer side of the drive gear 420. The machine 421 is fixedly connected to the inner wall of the upper pressure plate 41 via a motor frame. When the transmission component 414 is working, the rotating motor 421 drives the drive gear 420 to rotate. The drive gear 420 drives the transmission gear 418 that meshes with it to rotate. The transmission gear 418 drives the transmission chain 419 to rotate. The transmission chain 419 drives the remaining transmission gear 418 to rotate, thereby enabling the two sealing plates 411 to rotate synchronously. The rotation of the sealing plates 411 cooperates to release the sealing of the connecting hole 46, thereby allowing the quicklime in the storage bin 48 to slide down through the connecting hole 46.

[0036] The shielding member 44 includes a baffle 422 located at one end of the lower support plate 40. The baffle 422 is slidably connected to the inner wall of the guide tube 43. A lower drain hole 423 is provided on the inner wall of the baffle 422. A rotating rod 424 is fixedly connected to the center of one end of the baffle 422. The two ends of the rotating rod 424 are rotatably connected to the inner wall of the guide tube 43. A transmission gear 425 is fixedly connected to one end of the rotating rod 424 through the inner wall of the guide tube 43. A transmission chain 426 meshes with the outer side of the transmission gear 425. A transmission gear 3 427 meshes on the inner side of one end, and a driving gear 2 428 meshes on the outer side of the transmission gear 3 427. The dimensions of the driving gear 2 428 and the transmission gear 3 427 are different to match and control the rotation angle of the rotating rod 424. The driving gear 2 428 is rotatably connected to the inner wall of the lower support plate 40. A drive motor 429 is fixedly connected to one end of the driving gear 2 428. The drive motor 429 is fixedly connected to the inner wall of the lower support plate 40 through a motor frame. When the blocking member 44 is working, it passes through the set baffle. 422 is at a 90° angle to the lower support plate 40 to shield the crushed stone and soil above the lower support plate 40, preventing uncrushed soil from rolling out of the main body 1 of the soil screening machine. After the soil is crushed, the operator drives the drive motor 429 to rotate the second drive gear 428. The second drive gear 428 drives the transmission gear 427 meshing with it to rotate. The transmission gear 427 drives the second transmission chain 426 to rotate. The second transmission chain 426 drives the second transmission gear 425 to rotate. The second transmission gear 422... 5. Rotating the rotating rod 424 causes it to rotate 90°, which allows the baffle 422 to block the opening of the guide pipe 43. As the guide pipe 43 and the lower support plate 40 vibrate horizontally, the gravel above the lower support plate 40 slides out of the main body 1 of the soil screening machine through the baffle 422, and the crushed soil particles fall from the lower leakage hole 423 into the guide pipe 43 and enter the discharge port of the main body 1 of the soil screening machine, thereby completing the screening and crushing of gravel and soil clods in the ash soil and reducing the workload of the workers.

[0037] The driving component 45 includes a connecting rod 430 fixedly connected to the lower support plate 40 and the outer side of the support box 410 respectively. A return spring 431 is fixedly connected to the outer side of the connecting rod 430. One end of the return spring 431 is fixedly connected to the inner wall of the soil screening machine body 1. The connecting rod 430 is slidably connected to the inner wall of the soil screening machine body 1. A trapezoidal block 432 is fixedly connected to the end of the connecting rod 430 near the screen cylinder 2. The trapezoidal block 432 is slidably connected to the inner wall of the soil screening machine body 1. The outer side of the trapezoidal block 432 is slidably connected to... There is a trapezoidal block 433, one end of which is fixedly connected to a movable block 434. The movable block 434 has an inclined end 437 near the toothed ring 436. The movable block 434 is slidably connected to the inner wall of the soil screening machine body 1. Return springs 435 are fixedly connected to both sides of the movable block 434, one end of which is fixedly connected to the inner wall of the soil screening machine body 1. A toothed ring 436 is slidably connected to the end of the movable block 434 near the screen cylinder 2. The toothed ring 436 is fixedly connected to the screen cylinder 2. (Drive component) 45 During operation, the screen cylinder 2 rotates, driving the toothed ring 436 to rotate. The inclined side of the toothed ring 436 presses against the inclined end 437 of the moving block 434 to push the moving block 434 to slide along the inner wall of the soil screening machine body 1. The moving block 434 drives the trapezoidal block 2 433 to slide along the inner wall of the soil screening machine body 1 and presses against the reset spring 2 435. The trapezoidal block 2 433 presses against the inclined side of the trapezoidal block 1 432, thereby causing the trapezoidal block 1 432 to slide along the inner wall of the soil screening machine body 1. The trapezoidal block 1 432 drives the connecting rod 430 slides along the inner wall of the soil screening machine body 1. The connecting rod 430 drives the lower bearing plate 40 or the support box 410 to slide along the inner wall of the soil screening machine body 1. The connecting rod 430 also presses the first reset spring 431. When one tooth of the toothed ring 436 slides past the moving block 434, the second reset spring 435 pushes the moving block 434 to reset. The first reset spring 431 pushes the connecting rod 430 to reset, so that the lower bearing plate 40 and the support box 410 slide back and forth in the horizontal direction and move in opposite directions.

[0038] Example 2

[0039] In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that multiple rubber columns 5 are fixedly connected below the lower pressure plate. When the lower pressure plate vibrates left and right, the rubber columns 5 can better compress the gravel and soil above the lower support plate 40. The gravel compresses the rubber columns 5 to deform, while the rubber columns 5 compress the soil to break.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic ash and soil crushing and screening machine, comprising: Soil screening machine body (1); Its features are: Screen cylinder (2), the screen cylinder (2) is located inside the body (1) of the soil screening machine, and an inclined groove (3) is provided at one end of the screen cylinder (2); The crushing and screening mechanism (4) is located outside the screen cylinder (2). The crushing and screening mechanism (4) can crush the ash and soil blocks screened out by the screen cylinder (2) and separate them from the stones. The crushing and screening mechanism (4) includes a lower support plate (40) and an upper pressure plate (41) located outside the screen cylinder (2). The lower support plate (40) is slidably connected to the inner wall of the soil screening machine body (1). The inner wall of the upper pressure plate (41) is provided with an auxiliary component (42) that can add quicklime below the upper pressure plate (41) according to the weight change of the upper pressure plate (41). A guide pipe (43) is fixedly connected to the end of the lower support plate (40) away from the screen cylinder (2). A blocking component (44) that can block the lower support plate (40) is provided at the end of the lower support plate (40) near the guide pipe (43). A driving component (45) that can drive the lower support plate (40) and the upper pressure plate (41) to move is provided on the outer side of the lower support plate (40) and the upper pressure plate (41). The auxiliary component (42) includes multiple connecting holes (46) located on the inner wall of the upper pressure plate (41). The inner wall of the connecting holes (46) is provided with a sealing component (47) that can block the connecting holes (46). A storage compartment (48) is provided above the connecting holes (46). A tension sensor (49) is fixedly connected above the storage compartment (48). A support box (410) is fixedly connected above the tension sensor (49). The support box (410) is slidably connected to the inner wall of the soil screening machine body (1). The support box (410) is connected to the drive component (45). The shielding component (44) includes a baffle (422) located at one end of the lower support plate (40). The baffle (422) is slidably connected to the inner wall of the guide tube (43). A lower drain hole (423) is provided on the inner wall of the baffle (422). A rotating rod (424) is fixedly connected to the center of one end of the baffle (422). Both ends of the rotating rod (424) are rotatably connected to the inner wall of the guide tube (43). One end of the rotating rod (424) extends out of the inner wall of the guide tube (43) and is fixedly connected to a transmission gear (4). 25), the transmission gear two (425) is meshed with the transmission chain two (426) on the outside, the transmission chain two (426) is meshed with the transmission gear three (427) on the inside of one end, the transmission gear three (427) is meshed with the drive gear two (428) on the outside, the drive gear two (428) is rotatably connected to the inner wall of the lower support plate (40), and the drive motor (429) is fixedly connected to one end of the drive gear two (428), and the drive motor (429) is fixedly connected to the inner wall of the lower support plate (40); The driving component (45) includes a connecting rod (430) fixedly connected to the outer side of the lower support plate (40) and the support box (410), respectively. A return spring (431) is fixedly connected to the outer side of the connecting rod (430). One end of the return spring (431) is fixedly connected to the inner wall of the soil screening machine body (1). The connecting rod (430) is slidably connected to the inner wall of the soil screening machine body (1). A trapezoidal block (432) is fixedly connected to the end of the connecting rod (430) near the screen cylinder (2). The trapezoidal block (432) is slidably connected to the inner wall of the soil screening machine body (1). Trapezoidal block one (432) is slidably connected to trapezoidal block two (433) on the outside. Trapezoidal block two (433) is fixedly connected to a moving block (434) at one end. The moving block (434) is slidably connected to the inner wall of the soil screening machine body (1). The moving block (434) is fixedly connected to two sides of the moving block (434) respectively. The moving block (434) is fixedly connected to the inner wall of the soil screening machine body (1) at one end. The moving block (434) is slidably connected to a toothed ring (436) at one end near the screen cylinder (2). The toothed ring (436) is fixedly connected to the screen cylinder (2). The movable block (434) has a beveled end (437) near the toothed ring (436).

2. The automatic ash and soil crushing and screening machine according to claim 1, characterized in that: The sealing member (47) includes a sealing plate (411) located on the inner wall of the connecting hole (46). The sealing plate (411) is rotatably connected to the inner wall of the upper pressure plate (41). A connecting groove (412) is provided on the inner wall of the sealing plate (411). A dredging member (413) capable of clearing the connecting hole (46) is provided on the side of the sealing plate (411) near the connecting groove (412). A transmission member (414) capable of simultaneously driving the two sealing plates (411) to rotate is provided above the sealing plate (411).

3. An automatic ash and soil crushing and screening machine according to claim 2, characterized in that: The unblocking component (413) includes a top post (415) located on the inner wall of the sealing plate (411). The inner wall of the sealing plate (411) is provided with a placement groove (416) that can be slidably connected to the top post (415). A spring plate (417) is fixedly connected to one end of the top post (415) near the placement groove (416). One end of the spring plate (417) is fixedly connected to the inner wall of the placement groove (416).

4. An automatic ash and soil crushing and screening machine according to claim 2, characterized in that: The transmission component (414) includes a transmission gear (418) fixedly connected to two closed plates (411) respectively. A transmission chain (419) meshes with the outer side of the transmission gear (418). A drive gear (420) meshes with the inner side of any one of the transmission gears (418). The drive gear (420) is rotatably connected to the inner wall of the upper pressure plate (41). A rotary motor (421) is fixedly connected to the outer side of the drive gear (420). The rotary motor (421) is fixedly connected to the inner wall of the upper pressure plate (41).

5. An automatic ash and soil crushing and screening machine according to claim 1, characterized in that: The lower support plate (40) and the upper pressure plate (41) are inclined on the side close to each other.

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