Crusher with screening function for old rubber retreatment

Abstract

The utility model relates to the technical field of rubber retreatment, in particular to a crusher with a screening function for old rubber retreatment, which comprises a crusher, the bottom of the crusher is fixedly communicated with a support plate through a guide chute, the bottom of the support plate is fixedly provided with a bottom frame, and the inner bottom of the guide chute is rotatably connected with a main driving shaft; the lower portion of the supporting plate is sequentially sleeved with screen drums which are located under the material guiding groove and provided with multiple stages of screen holes which are sequentially reduced, a stirring and smashing mechanism is arranged in each screen drum, and the main driving shaft is in guiding fit with the multiple stirring and smashing mechanisms below the main driving shaft through guiding sliding clamping mechanisms in sequence. According to the multi-stage fine screening and smashing device, coarse smashing and multi-stage fine screening and smashing can be conveniently and sequentially carried out, the screening burden of one set of screen cloth is relieved, and meanwhile the smashing efficiency is improved.

Description

A shredder for recycling used rubber with screening function Technical Field

[0001] This utility model relates to the field of rubber reprocessing technology, specifically to a pulverizer for reprocessing used rubber with a screening function. Background Technology

[0002] China is a country with relatively scarce raw rubber resources, and it imports about 50% of its annual reclaimed rubber consumption. Finding sources of rubber raw materials and their substitutes is a continuous task for China. Therefore, properly handling waste rubber is of profound positive and practical significance for fully utilizing renewable resources, overcoming the scarcity of natural resources, reducing environmental pollution, and improving people's living environment. Reclaimed rubber has always been an important raw material for the global rubber industry. On the one hand, it can replace natural rubber, alleviating the severe shortage of natural rubber; on the other hand, it enables the recycling and reuse of waste rubber, solving the problem of waste rubber pollution. Before recycling, old rubber needs to be crushed.

[0003] A search revealed that patent CN219359972U discloses a rubber crushing device for rubber production. This device utilizes the interaction of a screen, collecting brush, collecting box, third motor, feed inlet, slider, T-block, vertical rod, and adapting spring. When the crushed rubber enters the screening box, rubber that meets the standards passes through the screen, while larger rubber particles are retained. The third motor then activates, causing a bidirectional threaded rod to move two sliders away from each other. The sliders move the T-block and collecting brush on the vertical rod, and the collecting brush sweeps the retained large rubber particles into the collecting box through the feed inlet. This facilitates the collection of non-standard rubber particles for further cutting, offering the advantage of convenient screening. However, as the device operates, the retained larger rubber particles accumulate on the screen, affecting the subsequent screening of rubber particles. Furthermore, the screening load of a single set of screens is heavy. Therefore, a crusher with screening function for the reprocessing of used rubber is designed to facilitate sequential coarse crushing and multi-stage fine screening, reducing the screening load of a single set of screens while improving crushing efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a pulverizer for the reprocessing of used rubber with a screening function, which facilitates sequential coarse pulverization and multi-stage fine screening and pulverization, reduces the screening burden of a set of screens, and improves pulverization efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pulverizer for reprocessing used rubber with screening function, comprising a pulverizer, a support plate fixedly connected to the bottom of the pulverizer via a guide chute, a base frame fixedly installed at the bottom of the support plate, a main drive shaft rotatably connected to the inner bottom of the guide chute, and a multi-stage screen cylinder with progressively lowered screen holes arranged sequentially below the support plate, each set of screen cylinders being equipped with a stirring and pulverizing mechanism, and the main drive shaft and the multiple sets of stirring and pulverizing mechanisms below being sequentially guided and engaged by a guide sliding mechanism, each set of screen cylinders being connected to the bottom of the support plate via a detachable positioning mechanism, and also including a drive mechanism for driving the main drive shaft to rotate.

[0008] Preferably, the mixing and pulverizing mechanism includes a driven shaft rotatably connected to the bottom of the screen cylinder, and a spiral pulverizing bar that contacts the inner side wall and the inner bottom wall of the screen cylinder is fixedly installed on the driven shaft. A pulverizing groove is formed on the spiral pulverizing bar on the side near the inner side wall of the screen cylinder.

[0009] Preferably, the guide sliding mechanism includes matching guide slots and guide blocks. Guide blocks are fixedly installed at the bottom of both the main drive shaft and the driven shaft, and guide slots are provided at the top of multiple driven shafts.

[0010] Preferably, the drive mechanism includes a transmission shaft that rotates laterally through the guide trough and a drive motor that is fixedly installed on the outside of the guide trough. The two ends of the transmission shaft are respectively connected to the main drive shaft and the output shaft of the drive motor through two meshing bevel gears. The two bevel gears located inside the guide trough are provided with protective covers that are fixedly connected to the guide trough, and the transmission shaft is rotatably connected to the protective covers.

[0011] Preferably, the detachable positioning mechanism is configured as two symmetrical sets, including a support block and a rotating slider that are rotatably and slidingly engaged. The support block is fixedly installed at the bottom of the support plate, and the rotating slider is fixedly installed on the screen cylinder. A positioning rod is laterally guided and slidably engaged on the support block. A connecting block is fixedly installed on the outward side of the positioning rod. A spring is sleeved on the positioning rod, and the two ends of the spring are fixedly connected to the support block and the connecting block, respectively. The inward side of the positioning rod is set as an arc shape, and a matching arc positioning groove is opened on the rotating slider.

[0012] Preferably, the outside of the multiple sets of screen cylinders is also fitted with a lifting and lowering receiving container. The receiving container can be placed at the bottom of the base frame. The receiving container includes multiple sets of receiving cylinders that are sequentially sealed, guided, and slidably fitted. A lifting drive cylinder is fixedly installed on the outer receiving cylinder. The top output end of the lifting drive cylinder is fixedly connected to the innermost receiving cylinder.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a pulverizer for the reprocessing of used rubber with screening function, which has the following beneficial effects:

[0015] This used rubber reprocessing pulverizer with screening function facilitates coarse pulverization through its pulverizing mechanism. The multi-stage sieve cylinders, with their progressively lowered multi-hole design, allow for multi-stage sieving. Each sieve cylinder contains a stirring and pulverizing mechanism for efficient mixing and pulverization. The drive mechanism and guide sliding mechanism enable low-speed rotation of the stirring and pulverizing mechanism, primarily for stirring and clearing the bottom of the sieve cylinders, ensuring smooth sieving. Finally, the drive mechanism can be set to high speed, further pulverizing the rubber particles remaining in the sieve cylinders. This multi-stage pulverization process results in finer pulverization of the rubber particles and improves pulverization efficiency. This used rubber reprocessing pulverizer with screening function facilitates sequential coarse pulverization and multi-stage fine sieving, reducing the sieving burden on a single sieve while simultaneously increasing pulverization efficiency. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a schematic diagram of the overall structure of the present invention, which is a non-grinding machine.

[0018] Figure 3 is a partial cross-sectional view of the overall structure of the present invention, which is a pulverizer-free device.

[0019] Figure 4 is a structural schematic diagram of the present invention's non-grinding pulverizer from other perspectives;

[0020] Figure 5 is a partially enlarged structural schematic diagram of point A in Figure 4 of this utility model;

[0021] Figure 6 is a structural diagram showing the disassembled combination of the feed trough and multiple screen cylinders of this utility model.

[0022] Figure 7 is a structural schematic diagram of the material guide trough and multiple screen cylinders of this utility model, taken from other perspectives.

[0023] Figure 8 is a partial cross-sectional view of the material receiving cylinder and the lifting drive cylinder of this utility model.

[0024] Figure 9 is a schematic diagram of the structure of the material receiving cylinder and the lifting drive cylinder of this utility model.

[0025] The following are labels in the attached diagram: 1. Crusher; 2. Feed chute; 3. Support plate; 4. Base frame; 5. Screen cylinder; 6. Drive shaft; 7. Spiral crushing bar; 8. Crushing trough; 9. Guide slot; 10. Guide block; 11. Main drive shaft; 12. Transmission shaft; 13. Bevel gear; 14. Drive motor; 15. Protective cover; 16. Support block; 17. Rotary slider; 18. Positioning rod; 19. Connecting block; 20. Spring; 21. Receiving cylinder; 22. Lifting drive cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Please refer to Figures 1-9. A pulverizer for reprocessing used rubber with screening function includes a pulverizer 1. The bottom of the pulverizer 1 is fixedly connected to a support plate 3 via a guide trough 2. A base frame 4 is fixedly installed at the bottom of the support plate 3. A main drive shaft 11 is rotatably connected to the bottom of the guide trough 2. A multi-stage screen cylinder 5 with progressively lowered screen holes is sequentially fitted below the support plate 3 and located directly below the guide trough 2. Each set of screen cylinders 5 is equipped with a stirring and pulverizing mechanism. The main drive shaft 11 and the multiple sets of stirring and pulverizing mechanisms below are sequentially guided and engaged by a guide sliding mechanism. Each set of screen cylinders 5 is connected to the bottom of the support plate 3 via a detachable positioning mechanism. The pulverizer also includes a drive mechanism for rotating the main drive shaft 11. Furthermore, the pulverizer includes a pulverizing box and pulverizing rollers symmetrically rotatably connected to both sides inside the pulverizing box. Each set of pulverizing rollers is equipped with a pulverizing motor fixedly installed on the outside of the pulverizing box. The bottom of the pulverizing box is fixedly connected to the top of the guide trough 2.

[0029] Specifically, the mixing and crushing mechanism includes a drive shaft 6 rotatably connected to the bottom of the screen cylinder 5. A spiral crushing bar 7 is fixedly installed on the drive shaft 6, which contacts the inner side wall and the inner bottom wall of the screen cylinder 5. A crushing groove 8 is opened on the side of the spiral crushing bar 7 near the inner side wall of the screen cylinder 5. When the drive shaft 6 rotates, it can drive the spiral crushing bar 7 to rotate. By opening the crushing groove 8, it is convenient to cut and crush the rubber at the crushing groove 8 under high-speed rotation.

[0030] Specifically, the guide slide mechanism includes matching guide slots 9 and guide blocks 10. Guide blocks 10 are fixedly installed at the bottom of the main drive shaft 11 and the bottom of the driven shaft 6. Guide slots 9 are provided at the top of multiple driven shafts 6. Through the cooperation of guide slots 9 and guide blocks 10, it is convenient to connect the main drive shaft 11 and the multiple sets of stirring and crushing mechanisms below in sequence, and it is also convenient to disassemble.

[0031] Specifically, the drive mechanism includes a transmission shaft 12 that rotates laterally through the guide trough 2 and a drive motor 14 fixedly installed on the outside of the guide trough 2. The two ends of the transmission shaft 12 are respectively connected to the main drive shaft 11 and the output shaft of the drive motor 14 through two meshing bevel gears 13. The two bevel gears 13 located inside the guide trough 2 are provided with a protective cover 15 fixedly connected to the guide trough 2, and the transmission shaft 12 is rotatably connected to the protective cover 15. The two meshing bevel gears 13 are respectively fixedly connected to one end of the transmission shaft 12 and the output shaft of the main drive shaft 11 or the drive motor 14. Furthermore, the drive motor 14 is a variable speed motor. When the drive motor 14 is started, it can easily drive the main drive shaft 11 to rotate through the cooperation of the bevel gears 13 and the transmission shaft 12. With the cooperation of multiple sets of guide sliding mechanisms, it can easily drive multiple sets of stirring and crushing mechanisms to perform low-speed stirring and high-speed crushing operations.

[0032] Specifically, the detachable positioning mechanism is configured as two symmetrical sets, including a support block 16 and a rotating slider 17 with a rotating sliding fit. The support block 16 is fixedly installed on the bottom of the support plate 3, and the rotating slider 17 is fixedly installed on the screen cylinder 5. A positioning rod 18 is laterally guided and slidably fitted on the support block 16. A connecting block 19 is fixedly installed on the outward side of the positioning rod 18. A spring 20 is sleeved on the positioning rod 18. The two ends of the spring 20 are fixedly connected to the support block 16 and the connecting block 19, respectively. The inward side of the positioning rod 18 is set as an arc shape, and a matching arc positioning groove is opened on the rotating slider 17. By applying a little force and overcoming the rebound force of the spring 20, the connecting block 19 can be pulled out from the arc positioning groove. Thus, this method can be used for both assembly and disassembly. With a little force, it can be positioned or released.

[0033] Specifically, the outside of the multiple sets of screen cylinders 5 is also fitted with a lifting and lowering receiving container. The receiving container can be placed at the bottom of the base frame 4. The receiving container includes multiple sets of receiving cylinders 21 that are sequentially sealed, guided, and slidably fitted. A lifting drive cylinder 22 is fixedly installed on the outer receiving cylinder 21. The top output end of the lifting drive cylinder 22 is fixedly connected to the innermost receiving cylinder 21. Through the lifting drive cylinder 22, the multiple sets of sequentially fitted receiving cylinders 21 can be lifted and lowered, thereby allowing the multiple sets of screen cylinders 5 on the upper side of the column to collect finely crushed rubber particles.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pulverizer for reprocessing used rubber with screening function, characterized in that: The system includes a crusher (1), the bottom of which is fixedly connected to a support plate (3) via a guide trough (2), and a base frame (4) is fixedly installed at the bottom of the support plate (3). The bottom of the guide trough (2) is rotatably connected to a main drive shaft (11). Below the support plate (3), a multi-stage screen cylinder (5) with progressively lower screen holes is sequentially fitted. Each set of screen cylinders (5) is equipped with a stirring and crushing mechanism. The main drive shaft (11) and the multiple sets of stirring and crushing mechanisms below are sequentially guided and engaged by a guide sliding mechanism. Each set of screen cylinders (5) is connected to the bottom of the support plate (3) via a detachable positioning mechanism. The system also includes a drive mechanism for rotating the main drive shaft (11).

2. The pulverizer for reprocessing used rubber with screening function according to claim 1, characterized in that: The mixing and pulverizing mechanism includes a drive shaft (6) rotatably connected to the bottom of the screen cylinder (5). A spiral pulverizing bar (7) is fixedly installed on the drive shaft (6) and contacts the inner side wall and the inner bottom wall of the screen cylinder (5). A pulverizing groove (8) is provided on the spiral pulverizing bar (7) on the side close to the inner side wall of the screen cylinder (5).

3. The shredder for reprocessing of old rubber with a sieving function according to claim 2, characterized in that: The guide sliding mechanism includes matching guide slots (9) and guide blocks (10). Guide blocks (10) are fixedly installed at the bottom of the main drive shaft (11) and the bottom of the secondary drive shaft (6). Guide slots (9) are opened at the positions above the multiple secondary drive shafts (6).

4. The pulverizer for reprocessing used rubber with screening function according to claim 3, characterized in that: The drive mechanism includes a transmission shaft (12) that rotates laterally through the guide trough (2) and a drive motor (14) that is fixedly installed on the outside of the guide trough (2). The two ends of the transmission shaft (12) are connected to the output shaft of the main drive shaft (11) and the drive motor (14) respectively through two meshing bevel gears (13). The two bevel gears (13) located inside the guide trough (2) are provided with a protective cover (15) that is fixedly connected to the guide trough (2), and the transmission shaft (12) and the protective cover (15) are connected in a sealed rotational manner.

5. The shredder for reprocessing of old rubber with a sieving function according to claim 4, characterized in that: The detachable positioning mechanism is configured as two symmetrical sets, including a support block (16) and a rotating slider (17) with a rotating sliding fit. The support block (16) is fixedly installed at the bottom of the support plate (3), and the rotating slider (17) is fixedly installed on the screen cylinder (5). A positioning rod (18) is laterally guided and slidably fitted on the support block (16). A connecting block (19) is fixedly installed on the outward side of the positioning rod (18). A spring (20) is sleeved on the positioning rod (18). The two ends of the spring (20) are fixedly connected to the support block (16) and the connecting block (19) respectively. The inward side of the positioning rod (18) is set as an arc shape, and a matching arc positioning groove is opened on the rotating slider (17).

6. The shredder for reprocessing of old rubber with a sieving function according to claim 5, characterized in that: The outside of the multiple sets of screen cylinders (5) is also fitted with a material receiving container that can be lifted and lowered. The material receiving container can be placed at the bottom of the base frame (4). The material receiving container includes multiple sets of material receiving cylinders (21) that are sequentially sealed, guided, and slidably fitted. A lifting drive cylinder (22) is fixedly installed on the outermost material receiving cylinder (21). The top output end of the lifting drive cylinder (22) is fixedly connected to the innermost material receiving cylinder (21).

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