Rubber granulator

Abstract

The utility model relates to the technical field of rubber dicing, in particular to a rubber dicing machine which comprises a machine body, a feeding end is installed on the machine body, a mixing device is arranged at the feeding end, a conical shell is rotationally arranged on the mixing device, a butt joint fixing shell is fixed in the machine body, the butt joint fixing shell and the conical shell are rotationally sealed, and a mixing cavity is formed in the conical shell. A mixing box body is arranged in the machine body, a feeding pump and an air inlet pump are mounted on the machine body, the bottom of the mixing box body is communicated with a mixing cavity, a stirring paddle is rotatably mounted in the mixing box body, a main motor is mounted on the machine body, a driving wheel is mounted on the stirring paddle, a gear ring is mounted on a conical shell, and the stirring paddle drives a driving shaft; the output end of the butt joint fixing shell drives a cutting knife, and a discharging channel is arranged at the bottom of the butt joint fixing shell. According to the rubber particle mixing device, rubber particles and talcum powder can be completely mixed through the mixing device, so that adhesion among the rubber particles is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of rubber pelletizing technology, specifically a rubber pelletizer. Background Technology

[0002] Rubber is a type of highly elastic polymer material with reversible elasticity. In the production of some rubber products, rubber sheets are first cut into strips, then the strips are cut into granules, and finally, the granules are used for further processing. However, after the rubber strips are cut into granules, the material's properties cause the cut surfaces to easily adhere to other granules, preventing complete separation between the granules and affecting subsequent processing.

[0003] Patent CN218700395U discloses a pelletizer for rubber granulation, capable of cutting rubber strips into rubber granules. However, this equipment exhibits the following problems affecting production efficiency during the pelletizing process:

[0004] 1. Talc cannot be effectively mixed with rubber granules, and the adhesion between rubber granules cannot be completely avoided;

[0005] 2. When using a single screening screen, it is difficult to avoid small rubber particles from getting mixed with large rubber particles due to jumping and accumulation, which cannot be completely separated.

[0006] 3. Talc cannot be recycled, which can easily cause air pollution and waste of resources.

[0007] Therefore, it is difficult to meet the existing production needs. In view of this, this application provides a rubber pelletizer. Utility Model Content

[0008] This utility model provides a rubber pelletizer to solve the problems mentioned in the background art.

[0009] This utility model is achieved through the following technical solution: A rubber pelletizer includes a machine body, on which a feed end is installed for feeding rubber strips through an internal through-hole. A mixing device is provided on the feed end, and a conical shell is rotatably mounted on the mixing device. A docking fixing shell is fixedly installed inside the machine body, and the docking fixing shell and the conical shell are rotatably sealed, forming a mixing chamber inside the conical shell. A mixing box is provided inside the machine body, and a feed pump and an air pump communicating with the mixing box are installed on the machine body. The bottom of the mixing box is connected to the mixing chamber through an air guide pipe, and a feed pump is used to supply talc powder into the mixing chamber. A stirring paddle is rotatably installed inside the mixing box, and a main motor for driving the stirring paddle to rotate is installed on the machine body. A drive wheel is installed on the stirring paddle, and a gear ring that meshes with the drive wheel is installed on the conical shell. The stirring paddle is driven by a drive shaft through a reducer, and the output end of the drive shaft drives a cutting blade corresponding to the feed end for cutting rubber strips into rubber granules. A discharge channel for discharging material is provided at the bottom of the docking and fixing shell.

[0010] Optionally, the conical shell is provided with evenly distributed inner protrusions, which can be conical, serrated, or cylindrical.

[0011] Optionally, a controller is fixedly installed at the front end of the machine body, and the controller is electrically connected to the main motor, the feed pump and the air pump respectively.

[0012] Optionally, a rotating sealing frame is rotatably installed in the feeding channel, and the outer edge of the rotating sealing frame is used to close the feeding channel. The rotating sealing frame is provided with a feeding groove arranged in a circumferential array to transfer the rubber particles located in the mixing chamber to the bottom of the feeding channel. The drive shaft drives the rotating sealing frame to rotate via a belt.

[0013] Optionally, the conical shell has an annular vent band at one end near the docking fixed shell. Inside the machine body, an annular shell is fixed outside the annular vent band and rotates and seals with the conical shell. An exhaust pipe is connected to the annular shell to facilitate the discharge of gas from the mixing chamber. An annular dust removal device corresponding to the annular vent band is provided inside the annular shell, and a dust removal bag is provided inside the annular dust removal device to separate talc powder and gas in the mixing chamber.

[0014] Optionally, the machine body is provided with a separation device inside, and the separation device includes a first conical sleeve rotatably mounted to the machine body. A second conical sleeve and a third conical sleeve are sequentially arranged outside the first conical sleeve. A first separation chamber is formed inside the first conical sleeve, and a second separation chamber is formed between the first and second conical sleeves. A third separation chamber is formed between the second and third conical sleeves. A first screening hole for connecting the first and second separation chambers is evenly distributed on the first conical sleeve, and a second screening hole for connecting the second and third separation chambers is evenly distributed on the second conical sleeve. The inlet end of the first separation chamber is connected to the outlet end of the feeding channel. The machine body is provided with discharge pipes at the outlet ends of the corresponding first, second, and third separation chambers, respectively. A rotating shaft is rotatably mounted on the machine body, and the rotating shaft is fixedly mounted to the first conical sleeve. The rotating sealing frame drives the rotating shaft to rotate through a speed increaser.

[0015] Optionally, the machine body is equipped with an air pump, and the inlet end of the air pump is connected to an air suction pipe that is inserted into the outlet end of the first separation chamber. The machine body is also equipped with an air intake pipe that connects to the inlet end of the first separation chamber.

[0016] Optionally, a conical guide protrusion is fixedly installed inside the machine body to guide the rubber particles discharged from the feeding channel into the first separation chamber.

[0017] Compared with the prior art, the beneficial effects of the rubber pelletizer provided by this utility model are:

[0018] This invention uses a mixing device to completely mix rubber particles and talc powder, thereby effectively preventing the rubber particles from sticking together; a separation device to effectively separate rubber particles of different sizes, thereby avoiding the problem of incomplete separation by traditional sieves; and an air pump to effectively recover excess talc powder, thereby achieving resource recycling and avoiding air pollution. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the mixing device of this utility model;

[0023] Figure 5 This is a schematic diagram of the separation device of this utility model;

[0024] Figure 6 This is a schematic diagram showing the connection between the main motor and the stirring paddle of this utility model.

[0025] In the diagram: 1. Machine body; 2. Mixing device; 201. Conical shell; 202. Gear ring; 203. Inner protrusion; 204. Annular vent band; 205. Mixing chamber; 3. Separating device; 301. Second sieve hole; 302. First sieve hole; 303. Third separation chamber; 304. Third conical sleeve; 305. Second conical sleeve; 306. Second separation chamber; 307. First conical sleeve; 308. First separation chamber; 4. Discharge pipe; 5. Suction pump; 6. Feed end; 7. Feed pump; 8. Air intake pump; 9. Controller; 10. Main motor; 11. Reducer; 12. Belt; 13. Air intake pipe; 14. Speed ​​increaser; 15. Exhaust pipe; 16. Suction pipe; 17. Cutting blade; 18. Air guide pipe; 19. Agitator; 20. Mixing box; 21. Annular dust collector; 22. Annular shell; 23. Drive wheel; 24. Connecting and fixing shell; 25. Discharge channel; 26. Discharge trough; 27. Rotating sealing frame; 28. Rotating shaft; 29. ​​Conical guide protrusion; 30. Drive shaft. Detailed Implementation

[0026] To clearly and completely describe the objectives and technical solutions of this utility model, and to more clearly illustrate its advantages, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6This utility model provides a rubber pelletizer, including a machine body 1. A feed end 6 is installed on the machine body 1 for feeding rubber strips through an internal through-hole. A mixing device 2 is provided on the feed end 6. A conical shell 201 is rotatably mounted on the mixing device 2. Inner protrusions 203 are evenly distributed inside the conical shell 201. The inner protrusions 203 are conical, serrated, or cylindrical. Rubber pellets bounce after impacting the inner protrusions 203, thus facilitating mixing with talc powder. A docking fixing shell 24 is fixedly installed inside the machine body 1, and the docking fixing shell 24 is rotatably sealed to the conical shell 201. A mixing chamber 205 is formed inside the conical shell 201. A mixing box 20 is provided inside the machine body 1, and a feed pump 7 and an air pump 8 connected to the mixing box 20 are installed on the machine body 1. The bottom of the mixing box 20 is connected to the mixing chamber 205 through an air guide pipe 18. The feed pump 7 is used to supply talc powder into the mixing chamber 205. An agitator 19 is rotatably installed inside the mixing box 20. The talc powder is mixed with the gas sent in by the air pump 8 in the mixing box 20 through the agitator 19. After mixing, the mixture is sent into the mixing chamber 205 through the air guide pipe 18, so as to facilitate mixing with the rubber particles in the mixing chamber 205. A main motor 10 is installed on the machine body 1 to drive the stirring paddle 19 to rotate. A drive wheel 23 is installed on the stirring paddle 19, and a gear ring 202 that meshes with the drive wheel 23 is installed on the conical housing 201. The stirring paddle 19 is driven by a drive shaft 30 through a reducer 11, and the output end of the drive shaft 30 drives a cutter 17 corresponding to the feed end 6 and used to cut rubber strips into rubber granules. The main motor 10 can not only drive the stirring paddle 19 to mix talc powder with gas, but also drive the cutter 17 to cut the rubber strips into rubber granules, and drive the conical housing 201 to rotate, thereby realizing the effective mixing of rubber granules and talc powder in the mixing chamber 205 using the conical housing 201. A discharge channel 25 for discharging material is provided at the bottom of the docking fixed housing 24. The discharge channel 25 is used to discharge the mixed rubber granules. A controller 9 is fixedly installed at the front end of the machine body 1, and the controller 9 is electrically connected to the main motor 10, the feed pump 7, and the air pump 8.

[0028] In operation, the equipment first feeds a rubber strip into the mixing chamber 205 through the feed end 6 via an external device. Simultaneously, the main motor 10 drives the cutting blade 17 to cut the rubber strip into rubber granules. When these granules fall onto the inner wall of the conical shell 201, they are bounced up and mixed with talcum powder fed in by the air guide pipe 18. The rubber granules then gradually move to the right along the inclined surface of the conical shell 201, eventually entering the discharge channel 25 and being discharged. This process effectively ensures thorough mixing of the talcum powder and rubber granules, thus preventing the granules from sticking together. It should be noted that the talcum powder used in this solution can be replaced with other powders that can isolate the rubber granules from sticking, such as flour.

[0029] Example 2: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6Based on Embodiment 1, a rotating sealing frame 27 is rotatably installed inside the feeding channel 25, and the outer edge of the rotating sealing frame 27 is used to close the feeding channel 25. The rotating sealing frame 27 is arranged in a circumferential array with feeding troughs 26 at the bottom of the feeding channel 25 to transfer rubber particles located in the mixing chamber 205. The drive shaft 30 drives the rotating sealing frame 27 to rotate via the belt 12. Inside the mixing chamber 205, the mixed rubber particles gradually enter the feeding trough 26. When the rotating sealing frame 27 rotates, the feeding trough 26 rotates from a state of being connected to the mixing chamber 205 to a state of facing the feeding trough 26. The rubber particles located in the feeding trough 26 are also discharged from the feeding channel 25 under the combined action of gravity and centrifugal force as the rotating sealing frame 27 rotates. During this process, the rotating sealing frame 27 maintains a seal on the mixing chamber 205, preventing gas inside the mixing chamber 205 from being directly blown out through the feeding channel 25, thereby preventing a large amount of talc powder from being blown into the air. The conical shell 201 has an annular perforated band 204 at one end near the docking fixed shell 24. Inside the body 1, an annular shell 22, which is rotatably sealed to the conical shell 201, is fixed outside the annular perforated band 204. An exhaust pipe 15 is connected to the annular shell 22 to facilitate the discharge of gas from the mixing chamber 205. An annular dust collector 21, corresponding to the annular perforated band 204, is installed inside the annular shell 22. The annular dust collector 21 contains a dust filter bag to separate the talc powder and gas in the mixing chamber 205. Gas in the mixing chamber 205 passes through the perforations on the annular perforated band 204 into the inner cavity of the annular shell 22, where it is filtered by the annular dust collector 21. The filtered clean gas is discharged through the exhaust pipe 15, while the filtered talc powder is returned to the mixing chamber 205 for reuse through the friction between the conical shell 201 and the annular shell 22. This ensures that the airflow continuously flows from the air guide pipe 18 to the exhaust pipe 15, allowing the airflow to transport the mixed rubber particles from the left side of the mixing chamber 205 to the right side. The speed of the airflow can be controlled by the air intake pump 8 to change the time it takes for the rubber particles to move from the left side to the right side of the mixing chamber 205. In conjunction with adjusting the rotation speed of the conical shell 201 by the main motor 10, the mixing time can be effectively adjusted to ensure that rubber particles of different sizes can be effectively mixed.

[0030] Example 3: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6Based on Embodiment 2, a separation device 3 is provided inside the body 1. The separation device 3 includes a first conical sleeve 307 rotatably mounted to the body 1. A second conical sleeve 305 and a third conical sleeve 304 are sequentially arranged outside the first conical sleeve 307. A first separation cavity 308 is formed inside the first conical sleeve 307, and a second separation cavity 306 is formed between the first conical sleeve 307 and the second conical sleeve 305. A third separation cavity 303 is formed between the second conical sleeve 305 and the third conical sleeve 304. The first conical sleeve 307 is evenly distributed with ferrules for connecting the first separation cavity 308 and... The second separation chamber 306 has a first screening hole 302, and the second conical sleeve 305 is evenly provided with second screening holes 301 for connecting the second separation chamber 306 and the third separation chamber 303. The inlet end of the first separation chamber 308 is connected to the outlet end of the feeding channel 25. The machine body 1 is provided with discharge pipes 4 at the outlet ends of the first separation chamber 308, the second separation chamber 306 and the third separation chamber 303 respectively. A rotating shaft 28 is rotatably installed on the machine body 1, and the rotating shaft 28 is fixedly installed with the first conical sleeve 307. The rotating sealing frame 27 drives the rotating shaft 28 to rotate through the speed increaser 14. Particles of three different size ranges are successively separated into the first separation chamber 308, the second separation chamber 306, and the third separation chamber 303 through the first screening hole 302 and the second screening hole 301. Generally, the size of the first screening hole 302 should be larger than the size of the second screening hole 301, so that the particle size of the rubber particles in the first separation chamber 308, the second separation chamber 306, and the third separation chamber 303 gradually decreases, thus achieving the purpose of screening rubber particles according to their different particle sizes. Moreover, during the screening process, since the centrifugal force is much greater than the force of the rubber particles moving from the right side to the left side of the machine body 1 under the guidance of the separation device 3, each rubber particle has sufficient time and opportunity to contact the first screening hole 302 or the second screening hole 301, thereby ensuring complete screening and preventing small rubber particles that should have been screened from continuing to be mixed with large rubber particles, thus ensuring complete screening. An air suction pump 5 is installed on the machine body 1, and the inlet end of the air suction pump 5 is connected to an air suction pipe 16 that is inserted into the outlet end of the first separation chamber 308. An air inlet pipe 13 connected to the inlet end of the first separation chamber 308 is also installed on the machine body 1. A conical guide protrusion 29 is fixedly installed inside the machine body 1 to guide the rubber particles discharged from the discharge channel 25 into the first separation chamber 308. The air suction pump 5 can suck the gas located in the separation device 3 into an external processing device, and then the external processing device can recover the excess talc powder in the gas, thereby achieving effective recovery of talc powder.

[0031] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A rubber pelletizer, comprising a body (1), characterized in that: The machine body (1) is equipped with a feed end (6) for feeding rubber strips through an internal through hole, and a mixing device (2) is provided on the feed end (6). A conical shell (201) is rotatably mounted on the mixing device (2). A docking fixed shell (24) is fixedly installed inside the machine body (1), and the docking fixed shell (24) and the conical shell (201) are rotatably sealed and form a mixing chamber (205) inside the conical shell (201). A mixing box (20) is provided inside the machine body (1), and a feeding pump (7) and an air pump (8) connected to the mixing box (20) are installed on the machine body (1). The bottom of the mixing box (20) is connected to the mixing chamber (205) through an air guide pipe (18), and the feeding... Pump (7) is used to supply talc powder into mixing chamber (205). A stirring paddle (19) is rotatably installed in the mixing box (20), and a main motor (10) for driving the stirring paddle (19) to rotate is installed on the machine body (1). A drive wheel (23) is installed on the stirring paddle (19), and a gear ring (202) that meshes with the drive wheel (23) is installed on the conical housing (201). The stirring paddle (19) is driven by a drive shaft (30) through a reducer (11), and the output end of the drive shaft (30) drives a cutting blade (17) that corresponds to the feed end (6) and is used to cut the rubber strip into rubber particles. A discharge channel (25) for discharging material is provided at the bottom of the docking fixed housing (24).

2. The rubber pelletizer according to claim 1, characterized in that: The conical shell (201) is provided with evenly distributed inner protrusions (203), and the inner protrusions (203) are conical protrusions, serrated protrusions or cylindrical protrusions.

3. A rubber pelletizer according to claim 1, characterized in that: A controller (9) is fixedly installed at the front end of the machine body (1), and the controller (9) is electrically connected to the main motor (10), the feed pump (7) and the air pump (8).

4. A rubber pelletizer according to claim 3, characterized in that: A rotating sealing frame (27) is rotatably installed inside the feeding channel (25), and the outer edge of the rotating sealing frame (27) is used to close the feeding channel (25). The rotating sealing frame (27) is provided with a feeding groove (26) arranged in a circumferential array on the rotating sealing frame (27) for transferring the rubber particles located in the mixing chamber (205) to the bottom of the feeding channel (25). The drive shaft (30) drives the rotating sealing frame (27) to rotate through the belt (12).

5. A rubber pelletizer according to claim 4, characterized in that: The conical shell (201) has an annular vent band (204) at one end near the docking fixed shell (24). Inside the body (1), an annular shell (22) is fixed to the outside of the annular vent band (204) and rotates and seals with the conical shell (201). An exhaust pipe (15) is connected to the annular shell (22) to facilitate the discharge of gas from the mixing chamber (205). An annular dust removal device (21) corresponding to the annular vent band (204) is provided inside the annular shell (22). A dust removal bag is provided inside the annular dust removal device (21) to separate talc powder and gas in the mixing chamber (205).

6. A rubber pelletizer according to claim 5, characterized in that: The machine body (1) is provided with a separation device (3) inside, and the separation device (3) includes a first conical sleeve (307) rotatably mounted to the machine body (1). A second conical sleeve (305) and a third conical sleeve (304) are sequentially arranged outside the first conical sleeve (307). A first separation cavity (308) is formed inside the first conical sleeve (307), and a second separation cavity (306) is formed between the first conical sleeve (307) and the second conical sleeve (305). A third separation cavity (303) is formed between the second conical sleeve (305) and the third conical sleeve (304). The first conical sleeve (307) is evenly provided with a means for connecting the first separation cavity (308) and the second separation cavity. The first screening hole (302) of (306) and the second screening hole (301) for connecting the second separation chamber (306) and the third separation chamber (303) are evenly distributed on the second conical sleeve (305). The inlet end of the first separation chamber (308) is connected to the outlet end of the feeding channel (25). The machine body (1) is provided with discharge pipes (4) at the outlet ends of the first separation chamber (308), the second separation chamber (306) and the third separation chamber (303) respectively. A rotating shaft (28) is rotatably installed on the machine body (1). The rotating shaft (28) is fixedly installed with the first conical sleeve (307). The rotating sealing frame (27) drives the rotating shaft (28) to rotate through the speed increaser (14).

7. A rubber pelletizer according to claim 6, characterized in that: An air pump (5) is installed on the body (1), and an air suction pipe (16) is connected to the inlet end of the air pump (5) and inserted into the outlet end of the first separation chamber (308). An air intake pipe (13) is installed on the body (1) and connected to the inlet end of the first separation chamber (308).

8. A rubber pelletizer according to claim 6, characterized in that: The machine body (1) is fixedly equipped with a conical guide protrusion (29) for guiding the rubber particles discharged from the feeding channel (25) into the first separation chamber (308).

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