Waste building detection material recycling device and method

Abstract

The invention provides a waste building detection material recycling device and method, and relates to the technical field of building material crushing, the device comprises a shell and a crushing roller, the crushing roller is driven by a driving assembly, a first variable roller and a second variable roller are rotatably connected in the shell, a first cam is rotatably connected in the first variable roller, and a second cam is rotatably connected in the second variable roller; first roller teeth are arranged on the side wall of the first variable roller in a sliding mode, and a first reset spring is connected between the first roller teeth and the first variable roller; a second cam is rotationally connected into the second variable roller, a check block is hinged to the side wall of the second variable roller, second roller teeth are arranged on the check block, and a second reset spring is connected between the check block and the second variable roller. The large concrete test block is preliminarily crushed to the size suitable for efficient feeding and fine crushing, the technical problem that in order to guarantee the crushing effect of the concrete test block, the distance between the two crushing rollers is small, and consequently the concrete test block is slowly fed into a clamping area between the two crushing rollers is solved, and the crushing efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of building material crushing technology, specifically to a device and method for recycling and processing waste building testing materials. Background Technology

[0002] Building material testing is a crucial step in construction, as its quality determines the safety, lifespan, and environmental impact of buildings. Concrete test blocks, as one sample for building material performance testing, are used to test various properties of concrete. They are an important basis for assessing concrete quality and ensuring structural safety. Test items include cubic compressive strength, axial compressive strength, flexural strength, impermeability, and frost resistance. After performance testing, concrete test blocks are usually disposed of as construction waste because the testing process may have caused structural damage, altered material properties, or the test blocks themselves are disposable samples. Concrete test blocks that have not been chemically contaminated can be crushed and screened to be used as recycled aggregate in non-structural parts such as low-strength concrete, mortar, subbase, and roadbed filling, or for building materials such as bricks and blocks.

[0003] A toothed roll crusher is a device used for crushing concrete. It uses two or more toothed rolls rotating in opposite directions to squeeze, split, and shear the material to achieve crushing.

[0004] For example, patent document CN119237078B discloses a toothed roller crusher. The crusher's casing contains a toothed roller assembly, which includes a main shaft, a first toothed seat, and a second toothed seat. Both the first and second toothed seats are mounted on the main shaft. The second toothed seat has a mounting groove containing tooth tip components. Material is fed into the casing through the inlet. A drive motor rotates the two main shafts within the casing, causing the two toothed roller assemblies to rotate in opposite directions, thus crushing the material.

[0005] When using the toothed roller crusher to crush concrete test blocks, in order to fully crush the concrete test blocks and achieve the target particle size, the gap between the two crushing rollers usually needs to be adjusted to a smaller size. This directly results in a severe limitation on the rate at which the concrete test blocks are fed into the clamping area between the rollers, causing large concrete test blocks to be unable to enter the crushing chamber quickly and smoothly, resulting in low equipment processing efficiency. Summary of the Invention

[0006] In view of this, the present invention provides a device and method for recycling and processing waste building testing materials, which solves the technical problem in the prior art where the small distance between the two crushing rollers affects the crushing efficiency.

[0007] To solve the above-mentioned technical problems, on the one hand, the present invention provides a waste building testing material recycling and processing device, including a shell and a crushing roller rotatably connected inside the shell. The crushing roller is driven by a drive assembly. Variable roller one and variable roller two are rotatably connected inside the shell. Variable roller one and variable roller two are both hollow cylindrical structures. A cam is rotatably connected inside the variable roller. Multiple roller teeth are slidably provided on the side wall of the variable roller. A return spring is connected between the roller teeth and the variable roller. The variable roller is driven by a drive component. The variable roller 2 is rotatably connected to a cam 2. Multiple stops are hinged to the side wall of the variable roller 2. Multiple roller teeth 2 are provided on the stops. A return spring 2 is connected between the stops and the variable roller 2. The variable roller 2 is driven by a driving component 2. The convex part of cam one faces the crushing roller, and the convex part of cam two faces the variable roller one. Cam one can drive roller tooth one to move, and cam two can drive the stop block to move, so that roller tooth two is above roller tooth one and the two are close to each other.

[0008] By adopting the above technical solution, drive component one drives variable roller one to rotate, and the convex part of cam one pushes roller tooth one to extend, that is, to move away from the axis of variable roller one; drive component two drives variable roller two to rotate, and the convex part of cam two pushes stop block to extend, that is, to move away from the axis of variable roller two, so that roller tooth two is above roller tooth one and the two are close to each other, forming an interlaced preliminary crushing zone. When roller tooth one extends, it strikes and crushes the concrete test block, and roller teeth one in other positions retract under the elastic force of return spring one. When roller tooth two extends with the stop block, the concrete test block struck by roller tooth one impacts roller tooth two, improving the crushing effect. The angle of the stop block is adjustable. When the stop block extends, it can block the splashing concrete test block and make it fall onto the crushing roller for crushing.

[0009] The drive assembly drives the crushing roller to rotate. The concrete test block, after initial crushing, falls onto the crushing roller below. With the cooperation of the variable roller and the crushing roller, the crushing roller further crushes the initially crushed concrete test block.

[0010] This invention pre-crushes large concrete test blocks to a size suitable for efficient feeding and fine crushing, solving the technical problem of low crushing efficiency caused by the slow feeding of concrete test blocks into the clamping area between the two crushing rollers due to the small distance between them in order to ensure the crushing effect. Simultaneously, after pre-crushing, the surface of the concrete test block is rough, forming an uneven texture. When it comes into contact with the roller teeth of the subsequent crushing rollers, the friction at the contact surface increases, which is beneficial to improving crushing efficiency.

[0011] Preferably, an auxiliary roller is provided on one side of the crushing roller, the auxiliary roller is driven by a drive assembly, a discharge channel one is provided between the auxiliary roller and the crushing roller, and a discharge channel two is provided between the crushing roller and the variable roller two.

[0012] By adopting the above technical solution, after initial crushing by variable roller one and variable roller two, the concrete test blocks exhibit differences in size. Smaller concrete test blocks can directly enter the subsequent process through discharge channel one, avoiding energy waste caused by over-crushing. Larger concrete test blocks, unable to enter discharge channel one, are guided to discharge channel two between the crushing roller and the auxiliary roller as they accumulate and the crushing roller rotates. There, they undergo targeted secondary crushing through the squeezing and shearing action of both, resulting in uniform particle size in the crushed concrete test blocks. This invention, by setting two discharge channels, reduces the encroachment of smaller concrete test blocks on the toothed roller clamping area, which helps to accelerate the feeding rate of larger concrete test blocks into the clamping area between the rollers, thereby improving crushing efficiency.

[0013] Preferably, a feeding channel is provided between the variable roller 2 and the variable roller 1. The variable roller 2 is slidably connected inside the housing. The housing is provided with a linear drive that can drive the variable roller 2 to move back and forth, so as to adjust the width of the feeding channel.

[0014] By employing the above technical solution, the linear actuator drives the variable roller two to move back and forth, causing it to oscillate and thus adjusting the width of the feeding channel. This small left-right oscillation helps to disrupt the force balance between the concrete test blocks, loosening and separating what might otherwise form an arched group of blocks, thereby reducing blockage in the feeding channel. Simultaneously, the oscillation of the variable roller two applies a downward impact force to the contacting concrete test blocks, giving them initial kinetic energy and allowing them to smoothly enter the gap between roller teeth one and two, thereby increasing the feeding speed and crushing efficiency.

[0015] Preferably, the variable roller 1 is provided with multiple roller tooth grooves spaced apart in the circumferential direction, the roller tooth 1 is slidably disposed in the roller tooth grooves, the multiple roller tooth grooves form a roller tooth groove group, and multiple roller tooth groove groups are provided spaced apart on the side wall of the variable roller 1 along the axial direction.

[0016] By adopting the above technical solution, multiple roller tooth grooves are evenly distributed around the circumference of the variable roller one. As the variable roller one rotates, when the roller tooth groove moves to the convex part of the cam one, the roller tooth one in the roller tooth groove extends out to crush the concrete test block. Roller teeth one are provided in the axially spaced roller tooth groove group, which together crush the concrete test block, thus enhancing the stability and safety of the crushing process.

[0017] Preferably, a feed hopper is provided at the top of the shell, and a discharge hopper is provided at the bottom of the shell.

[0018] By adopting the above technical solution, concrete test blocks enter the shell from the feed hopper, and after preliminary crushing and secondary crushing, they are discharged from the discharge hopper.

[0019] Preferably, the drive unit includes a drive motor installed in the housing and a synchronous belt drive structure that is connected to the output shaft of the drive motor and a variable roller.

[0020] By adopting the above technical solution, the drive motor drives the synchronous belt transmission structure to rotate, which in turn drives the variable roller to rotate. Since the cam is installed inside the variable roller, after the variable roller rotates, the cam's convex part intermittently pushes the roller teeth on the variable roller to extend, thereby achieving intermittent crushing of the concrete test block.

[0021] Preferably, the second drive component includes a second drive motor installed in the housing and a second synchronous belt drive structure that is connected to the output shaft of the second drive motor and the second variable roller.

[0022] By adopting the above technical solution, the second drive motor drives the second synchronous belt transmission structure to rotate, which in turn drives the second variable roller to rotate. Since the second cam is installed inside the second variable roller, after the second variable roller rotates, the cam of the second cam intermittently pushes the stop block on the second variable roller to extend. After the first pair of roller teeth hits and breaks the concrete test block, when the second roller tooth extends with the stop block, the concrete test block hit by the first roller tooth hits the second roller tooth, which improves the crushing effect.

[0023] Preferably, an adjusting block is slidably connected to the housing, a tensioning wheel is rotatably connected to the adjusting block, the tensioning wheel is connected to a synchronous belt drive structure, and a return spring is connected between the adjusting block and the housing.

[0024] By adopting the above technical solution, the tensioning pulley contacts the synchronous belt drive structure two. When the variable roller two moves, causing the synchronous belt drive structure two to slack, the return spring three pushes the adjusting block to slide, causing the tensioning pulley to tighten against the synchronous belt drive structure two, automatically compensating for the slack of the synchronous belt drive structure two. When the variable roller two moves in the opposite direction, causing the synchronous belt drive structure two to tighten, the tensioning pulley will be pushed by the synchronous belt drive structure two, and the adjusting block will compress the return spring three, preventing the belt from breaking due to excessive stretching.

[0025] Preferably, the drive assembly includes a drive motor three mounted on the housing, a drive gear mounted on the output shaft of the drive motor three, a driven gear one mounted on the auxiliary roller, and a driven gear two mounted on the crushing roller, wherein the drive gear, driven gear two, and driven gear one engage in sequential transmission.

[0026] By adopting the above technical solution, the drive motor three drives the active gear to rotate. Since the active gear, driven gear two and driven gear one mesh in sequence, they drive driven gear one and driven gear two to rotate, thereby realizing the rotation of the auxiliary roller and the crushing roller.

[0027] On the other hand, the present invention provides a method for recycling and processing waste building testing materials, using the aforementioned waste building testing material recycling and processing device, comprising the following steps: Step 1: Drive component 1 drives variable roller 1 to rotate, and the cam 1's convex part intermittently pushes the roller teeth 1 on variable roller 1 to extend, crushing the material falling from the feeding channel; Step 2: Drive component 2 drives variable roller 2 to rotate, and the cam 2's convex part pushes the stop block on variable roller 2 to extend, so that the material hit by roller tooth 1 impacts roller tooth 2; Step 3: The drive assembly drives the crushing roller to rotate, and the material that has been initially crushed is crushed again by the crushing roller.

[0028] By adopting the above technical solution, the first and second roller teeth perform preliminary crushing of the concrete test block, which is conducive to increasing the feeding speed of the crushing roller during the secondary crushing of the concrete test block, thereby improving the crushing efficiency. At the same time, after the concrete test block is initially crushed, the surface is rough and forms an uneven texture. When it comes into contact with the roller teeth of the subsequent crushing roller, the friction of the contact surface increases, which is conducive to improving the crushing efficiency.

[0029] The beneficial effects of the above-described technical solution of the present invention are as follows: 1. This invention pre-crushes large concrete test blocks to a size suitable for efficient feeding and fine crushing, solving the technical problem that the small distance between the two crushing rollers, which slows down the feeding of the concrete test block into the clamping area between the two rollers in order to ensure the crushing effect, is beneficial to improving crushing efficiency. Simultaneously, after pre-crushing, the surface of the concrete test block is rough, forming an uneven texture. When it comes into contact with the roller teeth of the subsequent crushing rollers, the friction of the contact surface increases, which also helps to improve crushing efficiency.

[0030] 2. After initial crushing by variable roller one and variable roller two, smaller concrete test blocks can be directly discharged through discharge channel one. Larger concrete test blocks, unable to enter discharge channel one, are guided to discharge channel two as they accumulate and the crushing rollers rotate, where they undergo secondary crushing. By setting two discharge channels, this invention reduces the encroachment of smaller concrete test blocks on the toothed roller clamping area, which helps to accelerate the feeding rate of larger concrete test blocks into the clamping area between the rollers, thereby improving crushing efficiency.

[0031] 3. The variable roller II of the present invention can swing slightly, which helps to break the force balance between concrete test blocks, loosening and separating the test block group that might otherwise form an arch shape. This helps to reduce the blockage of the feeding channel and also helps to apply a downward impact force to the contacting concrete test blocks, giving them initial kinetic energy and allowing them to smoothly enter the gap between roller teeth I and roller teeth II, thereby improving the feeding speed and crushing efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the internal structure of the waste building testing material recycling and processing device of the present invention; Figure 2 This is a cross-sectional view of the waste building material recycling and processing device of the present invention along the radial direction of the crushing roller; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the housing of the present invention near one end of the synchronous belt drive structure; Figure 5 This is a cross-sectional view of the housing of the present invention near the drive gear; Figure 6 This is a schematic diagram of the structure of the variable roller II of the present invention; Figure 7 This is a cross-sectional view of the variable roller of the present invention along the axial direction.

[0033] In the diagram: 1. Shell; 11. Feed hopper; 12. Discharge hopper; 13. Mounting bracket; 14. Slider; 15. Slide rail; 16. Slide rod; 17. Linear actuator; 2. Crushing roller; 21. Crushing tooth; 3. Variable roller one; 31. Roller tooth groove; 32. Roller tooth one; 321. Tooth tip; 322. Connecting part; 33. Return spring one; 34. Cam one; 35. Drive component one; 351. Drive motor one; 352. Synchronous belt drive structure one; 4. Variable roller two; 41. Mounting groove; 42. Hinge shaft; 43. Stop block; 431. Arc surface 1. 432. Arc surface 2. 44. Return spring 2. 45. Roller tooth 2. 46. Cam 2. 5. Auxiliary roller. 51. Connector 1. 52. Connector 2. 53. Connector 3. 6. Concrete test block. 7. Drive component 2. 71. Drive motor 2. 72. Synchronous belt drive structure 2. 721. Pulley 2. 722. Synchronous belt 2. 73. Slide groove. 74. Adjusting block. 75. Tensioning wheel. 76. Return spring 3. 8. Drive assembly. 81. Drive motor 3. 82. Drive gear. 83. Driven gear 1. 84. Driven gear 2. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the embodiments of the present invention. Figures 1-7 The technical solutions of the embodiments of the present invention will be clearly and completely described.

[0035] Example This embodiment provides a device for recycling and processing waste building testing materials, such as... Figure 1 and Figure 2 As shown, it includes a housing 1 and a crushing roller 2.

[0036] like Figure 1 and Figure 2 As shown, a feed hopper 11 is provided above the shell 1, and a discharge hopper 12 is provided below the shell 1. After the concrete test block 6 enters the shell 1 from the feed hopper 11, it is crushed and discharged from the discharge hopper 12.

[0037] like Figure 1 and Figure 2 As shown, the crushing roller 2 is rotatably connected inside the housing 1, and the crushing roller 2 has multiple crushing teeth 21 on its circumference.

[0038] like Figure 2 As shown, variable roller 3, variable roller 4, and auxiliary roller 5 are also rotatably connected inside the housing 1.

[0039] Among them, such as Figure 2 As shown, the auxiliary roller 5 is located to the left of the crushing roller 2, and the variable roller 3 and variable roller 4 are both located above the crushing roller 2, with the variable roller 3 located to the left of the variable roller 4. The axes of the crushing roller 2, variable roller 3, variable roller 4 and auxiliary roller 5 all extend in the front-back direction.

[0040] like Figure 2 As shown, both variable roller 3 and variable roller 4 are hollow cylindrical structures, and a discharge channel is left between variable roller 3 and variable roller 4. The discharge channel is located below the feed hopper 11.

[0041] like Figure 3 and Figure 7 As shown, the variable roller 3 has multiple roller tooth grooves 31 spaced apart in the circumferential direction. The multiple roller tooth grooves form a roller tooth groove group. Along the axial direction of the variable roller 3, multiple roller tooth groove groups are spaced apart on the side wall of the variable roller 3.

[0042] like Figure 3 and Figure 7 As shown, a roller tooth 32 is slidably connected within the roller tooth groove 31 and along the radial direction of the variable roller 3. The roller tooth 32 is T-shaped. The roller tooth 32 includes a tooth tip 321 away from the axis of the variable roller 3 and a connecting portion 322 close to the axis of the variable roller 3.

[0043] like Figure 3 and Figure 7 As shown, a return spring 33 is connected between the connecting part 322 and the inner wall of the variable roller 3. A cam 34 is rotatably connected inside the variable roller 3, the cam 34 passes through the variable roller 3, and is fixedly connected to the housing 1.

[0044] like Figure 2As shown, the convex part of cam 34 faces the crushing roller 2. Cam 34 can push roller teeth 32 to move radially along the variable roller 3 and away from the axis of variable roller 3. When roller teeth 32 extend, the tooth tip 321 gradually tilts from top to bottom away from the axis of variable roller 3, which facilitates striking the concrete test block 6 falling from the feeding channel.

[0045] like Figure 1 and Figure 2 As shown, the rotation of the variable roller 3 is driven by the drive component 35, which includes a drive motor 351 and a synchronous belt drive structure 352.

[0046] like Figure 1 and Figure 2 As shown, drive motor 351 is installed inside housing 1. Synchronous belt drive structure 352 includes pulleys mounted on drive motor 351 and variable roller 3 respectively, and a synchronous belt connected to the two pulleys. Drive motor 351 drives synchronous belt drive structure 352 to rotate, which in turn drives variable roller 3 to rotate.

[0047] like Figure 1 and Figure 2 As shown, the concrete test block 6 falls from the feed hopper 11 into the discharge channel. The drive component 35 drives the variable roller 3 to rotate. Since the cam 34 is rotatably installed inside the variable roller 3, after the variable roller 3 rotates, the convex part of the cam 34 intermittently pushes the roller teeth 32 on the variable roller 3 to extend, that is, to move to the side away from the axis of the variable roller 3, and to crush the concrete test block 6 falling from the discharge channel.

[0048] like Figure 3 and Figure 6 As shown, four mounting slots 41 are provided on the periphery of the variable roller 4. The mounting slots 41 extend along the axial direction of the variable roller 4. A stop block 43 is hinged in the mounting slot 41 through a hinge shaft 42. The axis of the hinge shaft 42 is parallel to the axis of the variable roller 4. A return spring 44 is connected between the stop block 43 and the mounting slot 41. The return spring 44 is a torsion spring.

[0049] like Figure 3 As shown, the two surfaces of the stop block 43 near the hinge axis 42 are both arc surfaces. The arc surface away from the axis of the variable roller 4 is marked as arc surface one 431, and the arc surface near the axis of the variable roller 4 is marked as arc surface two 432. Multiple roller teeth 45 are provided on arc surface one 431.

[0050] like Figure 2 and Figure 4As shown, the housing 1 is provided with two mounting brackets 13. Both ends of the variable roller 2 4 are rotatably connected to the two mounting brackets 13. The variable roller 2 4 is rotatably connected to the cam 2 46. The cam 2 46 passes through the variable roller 2 4 and is fixedly connected to the mounting bracket 13. The protrusion of the cam 2 46 faces the variable roller 1 3, and the end of the arc surface 2 432 away from the hinge shaft 42 abuts against the cam 2 46.

[0051] like Figure 1 and Figure 2 As shown, the rotation of the variable roller 4 is driven by the drive component 7, which includes a drive motor 71 and a synchronous belt drive structure 72.

[0052] like Figure 2 and Figure 4 As shown, drive motor 71 is installed inside housing 1. Synchronous belt drive structure 72 includes pulleys 721 respectively mounted on drive motor 71 and variable roller 4, and synchronous belt 722 connected to the two pulleys 721. Drive motor 71 drives synchronous belt drive structure 72 to rotate, which in turn drives variable roller 4 to rotate.

[0053] like Figures 1-3 As shown, the second driving component 7 drives the second variable roller 4 to rotate. Since the second cam 46 is rotatably installed inside the second variable roller 4, after the second variable roller 4 rotates, the protrusion of the second cam 46 pushes the stop block 43 to rotate around the hinge axis 42, and the stop block 43 extends, that is, moves to the side away from the axis of the second variable roller 4. When both the first roller tooth 32 and the stop block 43 extend, the first roller tooth 32 and the second roller tooth 45 approach each other, and the second roller tooth 45 is located above the first roller tooth 32.

[0054] like Figure 2 and Figure 3 As shown, when the stop block 43 extends, the concrete test block 6, which is struck by the first roller tooth 32, impacts the second roller tooth 45, improving the crushing effect. Since the angle of the stop block 43 is adjustable, when the stop block 43 extends, it can block the splashing concrete test block 6 and make it fall onto the crushing roller 2 for crushing.

[0055] In this embodiment, as Figure 2 As shown, variable roller 3 and variable roller 4 both rotate counterclockwise, while crushing roller 2 rotates clockwise.

[0056] like Figure 4 As shown, the housing 1 contains two sliders 14 and two slide rails 15. The sliders 14 are slidably connected to the slide rails 15. The length direction of the slide rails 15 is perpendicular to the axial direction of the variable roller 4. The two slide rails 15 are arranged parallel to each other at both ends of the variable roller 4. The sliders 14 are provided with slide rods 16. The axis of the slide rods 16 extends in the vertical direction. The mounting bracket 13 is slidably connected to the slide rods 16.

[0057] like Figure 2 and Figure 4 As shown, the housing 1 is equipped with two linear actuators 17, which are either pneumatic or hydraulic cylinders. The two linear actuators 17 drive the two sliders 14 to slide back and forth within the two slide rails 15, thereby driving the mounting bracket 13 and the variable roller 4 to slide back and forth, that is, the variable roller 4 can move away from or closer to the variable roller 3.

[0058] like Figure 2 and Figure 4 As shown, the linear actuator 17 drives the slider 14 to move back and forth, which in turn causes the variable roller 4 to swing left and right, thereby adjusting the width of the feeding channel. The slight left and right swinging of the variable roller 4 helps to break the force balance between the concrete test blocks 6, loosening and separating the potentially arched group of test blocks, thus reducing blockage in the feeding channel. Furthermore, the swinging of the variable roller 4 applies a downward impact force to the contacting concrete test blocks 6, giving them initial kinetic energy and allowing them to smoothly enter the gap between roller teeth 32 and 45, thereby increasing the feeding speed and crushing efficiency.

[0059] like Figure 2 and Figure 4 As shown, the roller shafts of variable roller 3 and auxiliary roller 5 are rotatably connected to connector 51, the roller shafts of auxiliary roller 5 and crushing roller 2 are rotatably connected to connector 52, and the roller shafts of crushing roller 2 and variable roller 4 are rotatably connected to connector 53. Connectors 51, 52, and 53 are all plate-shaped structures.

[0060] like Figure 4 As shown, a groove 73 is provided on the housing 1 near the synchronous belt 722. An adjusting block 74 is slidably disposed in the groove 73, and the sliding direction of the adjusting block 74 is the same as the sliding direction of the slider 14. A tensioning wheel 75 is rotatably connected to the adjusting block 74, and the tensioning wheel 75 is drivenly connected to the synchronous belt 722. A return spring 76 is connected to the adjusting block 74 and the groove 73.

[0061] like Figure 2 and Figure 4 As shown, the tensioning pulley 75 is connected to the synchronous belt 722. When the variable roller 4 moves, causing the synchronous belt 722 to slack, the return spring 76 pushes the adjusting block 74 to slide, causing the tensioning pulley 75 to tighten the synchronous belt 722, automatically compensating for the slack of the synchronous belt 722. When the variable roller 4 moves in the opposite direction, tightening the synchronous belt drive structure 72, the tensioning pulley 75 is pushed by the synchronous belt 722, compressing the return spring 76 through the adjusting block 74, preventing the belt from breaking due to excessive stretching.

[0062] like Figure 1 and Figure 5As shown, both the auxiliary roller 5 and the crushing roller 2 are driven by the drive assembly 8, which includes a drive motor 81, a drive gear 82, a driven gear 83, and a driven gear 84.

[0063] like Figure 1 and Figure 5 As shown, drive motor 3 81 is installed inside housing 1, drive gear 82 is mounted on the output shaft of drive motor 3 81, driven gear 1 83 is mounted on the roller shaft of auxiliary roller 5, and driven gear 2 84 is mounted on the roller shaft of crushing roller 2. Drive gear 82, driven gear 2 84 and driven gear 1 83 engage sequentially.

[0064] like Figure 1 and Figure 5 As shown, the drive motor 81 drives the drive gear 82 to rotate. Since the drive gear 82, driven gear 84 and driven gear 83 mesh in sequence, they drive driven gear 83 and driven gear 84 to rotate, thereby realizing the rotation of the auxiliary roller 5 and the crushing roller 2.

[0065] like Figure 2 and Figure 3 As shown, there is a discharge channel one between the auxiliary roller 5 and the crushing roller 2, and a discharge channel two between the crushing roller 2 and the variable roller 4. The discharge channel one is located below and slightly to the left of the discharge channel two. The variable roller 4 also has multiple crushing teeth 21 on its periphery.

[0066] like Figure 2 and Figure 3 As shown, after the concrete test blocks 6 are initially crushed by the variable roller 3 and variable roller 4, their sizes vary. Smaller concrete test blocks 6 can directly enter the subsequent process through discharge channel 1, avoiding energy waste caused by over-crushing. Larger concrete test blocks 6, unable to enter discharge channel 1, are guided to discharge channel 2 as they accumulate and the crushing roller 2 rotates. There, they undergo targeted secondary crushing through the squeezing and shearing action of crushing roller 2 and variable roller 4, resulting in uniform particle size in the crushed concrete test blocks 6. Furthermore, the inclusion of discharge channels 1 and 2 in this embodiment reduces the encroachment of smaller concrete test blocks 6 on the discharge channels, facilitating faster feeding of larger concrete test blocks 6 into the clamping area between the rollers, thereby improving crushing efficiency.

[0067] A method for recycling and processing waste building testing materials, using the waste building testing material recycling and processing device of this embodiment, includes the following steps: Step 1: Concrete test block 6 falls from the feed hopper 11 into the discharge channel. The drive component 35 drives the variable roller 3 to rotate. The convex part of the cam 34 intermittently pushes the roller teeth 32 on the variable roller 3 to extend and crush the concrete test block 6 falling from the discharge channel.

[0068] Step 2: Drive component 2 7 drives variable roller 2 4 to rotate. The convex part of cam 2 46 pushes the stop block 43 on variable roller 2 4 to rotate around the hinge shaft 42. The stop block 43 extends out, and the concrete test block 6 hit by roller tooth 1 32 impacts roller tooth 2 45, improving the crushing effect. The concrete test block 6 is initially crushed to a size suitable for efficient feeding and fine crushing, which is conducive to improving crushing efficiency. At the same time, the extended stop block 43 can block the splashing concrete test block 6.

[0069] Step 3: The linear driver 17 drives the slider 14 to move back and forth, which in turn drives the variable roller 2 4 to swing left and right, thereby adjusting the width of the feeding channel. This helps to reduce blockage of the feeding channel and also helps to increase the feeding speed and crushing efficiency.

[0070] Step 4: The drive assembly 8 drives the crushing roller 2 and the auxiliary roller 5 to rotate. After the concrete test block 6 is initially crushed by the variable roller 1 3 and the variable roller 2 4, the smaller concrete test blocks 6 can directly enter the subsequent process through the discharge channel 1. However, the larger concrete test blocks 6 cannot enter the discharge channel 1. As the larger concrete test blocks 6 accumulate and the crushing roller 2 rotates, they are guided to the discharge channel 2, where the crushing roller 2 performs secondary crushing. The crushed concrete test blocks 6 are then discharged from the discharge hopper 12.

[0071] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components.

Claims

1. A waste building inspection material recycling and processing device, comprising a housing (1) and a crushing roller (2) rotatably connected within the housing (1), the crushing roller (2) being driven by a drive assembly (8), characterized in that: Inside the housing (1), there are rotatably connected variable roller one (3) and variable roller two (4), both of which are hollow cylindrical structures; A cam (34) is rotatably connected inside the variable roller (3). Multiple roller teeth (32) are slidably provided on the side wall of the variable roller (3). A reset spring (33) is connected between the roller teeth (32) and the variable roller (3). The variable roller (3) is driven by a drive component (35). The variable roller 2 (4) is rotatably connected to the cam 2 (46), and multiple stops (43) are hinged on the side wall of the variable roller 2 (4). Multiple roller teeth 2 (45) are provided on the stops (43). A reset spring 2 (44) is connected between the stops (43) and the variable roller 2 (4). The variable roller 2 (4) is driven by the drive component 2 (7). The convex part of cam one (34) faces the crushing roller (2), and the convex part of cam two (46) faces the variable roller one (3). Cam one (34) can drive roller tooth one (32) to move, and cam two (46) can drive the stop block (43) to move so that roller tooth two (45) is above roller tooth one (32) and the two are close to each other.

2. The waste building testing material recycling and processing device according to claim 1, characterized in that: An auxiliary roller (5) is provided on one side of the crushing roller (2). The auxiliary roller (5) is driven by the drive assembly (8). There is a discharge channel one between the auxiliary roller (5) and the crushing roller (2), and a discharge channel two between the crushing roller (2) and the variable roller two (4).

3. The waste building testing material recycling and processing device according to claim 2, characterized in that: A feeding channel is provided between the variable roller 2 (4) and the variable roller 1 (3). The variable roller 2 (4) is slidably connected inside the housing (1). The housing (1) is provided with a linear driver (17) that can drive the variable roller 2 (4) to move back and forth, so as to adjust the width of the feeding channel.

4. The waste building testing material recycling and processing device according to claim 3, characterized in that: The variable roller 1 (3) is provided with multiple roller tooth grooves (31) spaced apart in the circumferential direction. Roller tooth 1 (32) is slidably disposed in the roller tooth groove (31). Multiple roller tooth grooves form a roller tooth groove group. Along the axial direction of the variable roller 1 (3), multiple roller tooth groove groups are provided at intervals on the side wall of the variable roller 1 (3).

5. The waste building testing material recycling and processing device according to claim 4, characterized in that: A feed hopper (11) is provided above the shell (1), and a discharge hopper (12) is provided below the shell (1).

6. The waste building testing material recycling and processing device according to claim 5, characterized in that: The drive unit 1 (35) includes a drive motor 1 (351) installed in the housing (1) and a synchronous belt drive structure 1 (352) that is connected to the output shaft of the drive motor 1 (351) and the variable roller 1 (3).

7. The waste building testing material recycling and processing device according to claim 6, characterized in that: The second drive unit (7) includes a second drive motor (71) installed in the housing (1) and a second synchronous belt drive structure (72) that is connected to the output shaft of the second drive motor (71) and the second variable roller (4).

8. The waste building testing material recycling and processing device according to claim 7, characterized in that: The housing (1) is slidably connected to the adjusting block (74), and the adjusting block (74) is rotatably connected to the tensioning wheel (75). The tensioning wheel (75) is connected to the synchronous belt drive structure (72). The adjusting block (74) and the housing (1) are connected to the return spring (76).

9. The waste building testing material recycling and processing device according to claim 8, characterized in that: The drive assembly (8) includes a drive motor three (81) mounted on the housing (1), a drive gear (82) mounted on the output shaft of the drive motor three (81), a driven gear one (83) mounted on the auxiliary roller (5), and a driven gear two (84) mounted on the crushing roller (2). The drive gear (82), driven gear two (84), and driven gear one (83) mesh in sequence.

10. A method for recycling and processing waste building testing materials, using the waste building testing material recycling and processing device according to claim 1, characterized in that: Includes the following steps: Step 1: Drive component 1 (35) drives variable roller 1 (3) to rotate, and the cam 1 (34) intermittently pushes the roller teeth 1 (32) on variable roller 1 (3) to extend and crush the material falling from the feeding channel; Step 2: Drive component 2 (7) drives variable roller 2 (4) to rotate, and the protrusion of cam 2 (46) pushes the stop block (43) on variable roller 2 (4) to extend, and the material hit by roller tooth 1 (32) impacts roller tooth 2 (45); Step 3: The drive component (8) drives the crushing roller (2) to rotate, and the material after preliminary crushing is crushed again by the crushing roller (2).

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