Powder screening device

Abstract

The utility model relates to the technical field of rubber powder production and processing, and discloses a powder screening device which comprises a barrel, a feeding port is formed in the upper end of the barrel, and a discharging port is fixedly connected to the side wall of the barrel. The screening drilling machine is internally arranged between the barrel and the feeding port, the screening assembly is used for screening rubber particles and comprises an air outlet, filter cartridges and a driving motor, the filter cartridges are arranged on the barrel in an array mode, the filter cartridges are rotationally connected with the barrel, and the filter cartridges are rotationally connected with a port corresponding to the feeding port; the air outlets are symmetrically formed in the outer sides of the filter cartridges, the driving motor drives the filter cartridges and components in the filter cartridges through cooperation of components in the screening assembly, rubber powder is ground and screened, the situation that after the rubber powder is stored for a long time, adhesion is caused due to improper storage, and the rubber powder cannot be screened is avoided, and meanwhile the fineness of the rubber powder is improved; removal of rubber powder caused by incapability of sieving is reduced, and utilization rate is increased.

Description

Technical Field

[0001] This utility model belongs to the field of rubber powder production and processing technology, specifically, it relates to a powder sieving device. Background Technology

[0002] Rubber powder is short for rubber powder. It is generally made from waste tires. Common processing methods include: room temperature pulverization, freezing, and room temperature chemical processing. Rubber powder is widely used in sports plastic fields, playgrounds, rubber floor tiles, waterproof membranes, waterproof coatings, modified asphalt for highways, and rubber products. During production, rubber powder needs to be separated and sieved, which requires the use of rubber powder separation sieve devices.

[0003] A document with publication number (CN220808113U) discloses a rubber powder separating screen device. It features a feeding mechanism where a motor causes a reciprocating block to move along the threaded surface of a lead screw. This displacement causes two long plates to push two sealing plates in opposite or relative directions, resulting in the discharge pipe repeatedly opening and closing to achieve intermittent discharge and screening. This solves the problem in existing technologies where large amounts of material are simultaneously poured into the screen, increasing the probability of screen blockage. A screening mechanism is also included. Rubber powder falls to the top of the separating screen and is screened by a vibrating motor. The screened rubber powder is discharged from the discharge port, while large particles of rubber powder at the top of the screen are rolled out through the discharge hole by rotating conveyor blades. This solves the problem in existing technologies where large particles accumulate on the screen after screening, especially during rubber powder separation, where large accumulations can clog the screen's filter holes, potentially preventing separation and screening altogether.

[0004] The above-mentioned device avoids the problem of screen blockage by intermittently closing the feed pipe. However, if the rubber powder is not stored properly (the rubber particles will stick together under the influence of external environmental factors such as moisture and heat), the particles will stick together and become difficult to screen.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the technical problem of rubber particle adhesion, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A powder sieving device includes a cylinder with a feed inlet at the upper end and a discharge outlet fixedly connected to the side wall of the cylinder; a sieving assembly is disposed inside the cylinder between the feed inlet and the sieving assembly for sieving rubber particles. The sieving assembly includes an air outlet, filter cylinders, and a drive motor. The filter cylinder array is disposed on the cylinder, and the filter cylinders are rotatably connected to the cylinder and rotatably connected to the corresponding ports of the feed inlet. The air outlets are symmetrically disposed on the outside of each filter cylinder. The drive motor is disposed at the bottom of the cylinder, and each filter cylinder is drively connected to the drive motor.

[0008] In a preferred embodiment of this utility model, the drive motor is fixedly connected to the bottom of the cylinder, the output shaft of the drive motor is fixedly connected to a drive gear, and multiple transmission gears mesh around the drive gear. The corresponding filter cylinder is fixedly connected to the transmission gear.

[0009] In a preferred embodiment of the present invention, a spiral block is fixedly connected to the inner wall of each filter cylinder, a grinding rod is fixedly connected to the middle of each filter cylinder, and grinding blocks are arranged in an array on each grinding rod.

[0010] In a preferred embodiment of this utility model, each of the spiral blocks is spiral in shape, and the grinding blocks on each grinding rod are spiral in the opposite direction to the spiral blocks in the longitudinal direction, and the corresponding grinding blocks are fixedly connected to the grinding rods.

[0011] In a preferred embodiment of this utility model, each of the air outlets is fixedly connected to the cylinder body, and the air outlets corresponding to the air outlets are arranged diagonally opposite to the filter cylinder.

[0012] In a preferred embodiment of the present invention, an isolation block is fixedly connected to the bottom of the cylinder, each filter cylinder is rotatably connected to the isolation block, and there is a cavity between the isolation block and the cylinder.

[0013] In a preferred embodiment of this utility model, the drive gear and each transmission gear are installed in the cavity between the isolation block and the cylinder.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This powder sieving device uses a drive motor to drive a filter cylinder and its internal components through the sieving assembly to crush and sieve rubber powder. This prevents the rubber powder from sticking together due to improper storage after long-term storage, thus preventing it from being sieved. It also improves the fineness of the rubber powder, reduces the amount of rubber powder removed due to failure to sieve, and increases the utilization rate.

[0016] 2. In this powder sieving device, when rubber powder passes between the spiral block and the grinding rod, the spiral block and the grinding block squeeze the rubber powder and twist it apart, avoiding the adhesion of rubber powder due to improper storage after long-term storage, which would prevent the rubber powder from being unable to be sieved. At the same time, it improves the fineness of the rubber powder, reduces the removal of rubber powder due to the inability to be sieved, and improves the utilization rate. Rubber powder of qualified size is discharged through the wall of the filter cylinder.

[0017] 3. This powder screening device cools the rubber powder inside the filter cylinder through the air outlet during the rolling process, preventing the rubber powder from melting and sticking to the device due to the temperature generated by friction. At the same time, by means of diagonal arrangement, eddies are generated inside the filter cylinder, increasing the movement speed of the rubber powder, and simultaneously throwing rubber powder of qualified size through the centrifugal force generated by the eddies.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the cylindrical body of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure between the drive motor and the filter cartridge of this utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the filter cartridge of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the grinding rod of this utility model.

[0025] In the diagram: 1. Cylinder; 11. Feed inlet; 12. Discharge outlet; 2. Air outlet; 3. Filter cylinder; 31. Spiral block; 32. Grinding rod; 33. Grinding block; 4. Isolation block; 41. Drive motor; 42. Drive gear; 43. Transmission gear. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] Please see Figure 1-5A powder sieving device includes a cylinder 1 with a feed inlet 11 at its upper end and a discharge outlet 12 fixedly connected to the side wall of the cylinder 1; a sieving assembly is disposed inside the cylinder 1 between the feed inlet 11 and the sieving assembly is used to sieve rubber particles. The sieving assembly includes an air outlet 2, filter cylinders 3, and a drive motor 41. The filter cylinders 3 are arrayed on the cylinder 1 and rotatably connected to the cylinder 1. The filter cylinders 3 are rotatably connected to the corresponding ports of the feed inlet 11. The air outlets 2 are symmetrically arranged on the outside of each filter cylinder 3. The drive motor 41 is located at the bottom of the cylinder 1. Each filter cylinder 3 has... The filter cylinder 3 is connected to the drive motor 41. Rubber powder is fed into the filter cylinder 3 through the feed port 11. The drive motor 41 drives the filter cylinder 3 and its internal components through the components in the screening assembly to crush and screen the rubber powder. This prevents the rubber powder from sticking together due to improper storage after long-term storage, thus preventing it from being screened. At the same time, it improves the fineness of the rubber powder, reduces the removal of rubber powder due to failure to screen, and improves the utilization rate. Meanwhile, the rubber powder in the filter cylinder 3 is cooled through the air outlet 2 during crushing to prevent the rubber powder from melting and sticking to the device due to the temperature generated by friction.

[0028] The drive motor 41 is fixedly connected to the bottom of the cylinder 1. The output shaft of the drive motor 41 is fixedly connected to the drive gear 42. Multiple transmission gears 43 mesh around the drive gear 42. The corresponding filter cylinder 3 is fixedly connected to the transmission gear 43. The drive motor 41 drives the drive gear 42 through the output shaft. The transmission gear 43 meshes with the drive gear 42. The transmission gear 43 drives the filter cylinder 3 to rotate. The rotation drives the components inside the filter cylinder 3 to work.

[0029] Each filter cylinder 3 has a spiral block 31 fixedly connected to its inner wall, and a grinding rod 32 fixedly connected to the middle of each filter cylinder 3. Each grinding rod 32 has an array of grinding blocks 33. Each spiral block 31 is spiral in shape, and the grinding blocks 33 on each grinding rod 32 are spiral in the opposite direction to the spiral block 31 in the longitudinal direction. The corresponding grinding blocks 33 are fixedly connected to the grinding rod 32. When the filter cylinder 3 rotates, it drives the spiral block 31 and the grinding rod 32 inside to rotate as well. The rubber powder is moved inside the filter cylinder 3 by the spiral block 31 and the grinding rod 32. When the rubber powder passes between the spiral block 31 and the grinding rod 32, the spiral block 31 and the grinding block 33 squeeze the rubber powder and twist it apart. This prevents the rubber powder from sticking together due to improper storage after long-term storage, which would prevent the rubber powder from being sieved. At the same time, it improves the fineness of the rubber powder, reduces the removal of rubber powder due to the inability to sieve, and improves the utilization rate. Rubber powder of qualified size is discharged through the wall of the filter cylinder 3.

[0030] Each of the air outlets 2 is fixedly connected to the cylinder 1. The air outlets of the corresponding air outlets 2 are diagonally arranged with the filter cylinder 3. A fan is fixedly connected to the end of each air outlet 2. During the rolling process, the rubber powder inside the filter cylinder 3 is cooled through the air outlets 2 to prevent the rubber powder from melting and sticking to the device due to the temperature generated by friction. At the same time, the diagonal arrangement generates vortices in the filter cylinder 3, increasing the movement speed of the rubber powder. Meanwhile, the qualified rubber powder is thrown out by the centrifugal force generated by the vortex.

[0031] The bottom of the cylinder 1 is fixedly connected to an isolation block 4. Each filter cylinder 3 is rotatably connected to the isolation block 4. There is a cavity between the isolation block 4 and the cylinder 1. The drive gear 42 and each transmission gear 43 are installed in the cavity between the isolation block 4 and the cylinder 1. The isolation block 4 isolates the drive gear 42 and transmission gear 43 and other components, preventing rubber powder from contacting the drive gear 42 and transmission gear 43 and causing blockage, which would affect the operation of the device.

[0032] Working Principle: Rubber powder is fed into the filter cylinder 3 through the feed inlet 11. The drive motor 41, through the components within the screening assembly, drives the filter cylinder 3 and its internal components to crush and screen the rubber powder. This prevents the rubber powder from sticking together due to improper storage after long-term storage, thus improving the fineness of the rubber powder, reducing the amount of powder removed due to sieving failure, and increasing utilization. Simultaneously, the rubber powder inside the filter cylinder 3 is cooled through the air outlet 2 during crushing, preventing the rubber powder from melting and sticking to the device due to frictional heat. The drive motor 41 drives the drive gear 42 through the output shaft. The transmission gear 43 meshes with the drive gear 42, causing the filter cylinder 3 to rotate. This rotation drives the components inside the filter cylinder 3 to work. As the filter cylinder 3 rotates, the internal spiral block 31 and grinding rod 32 also rotate. The rubber powder inside the filter cylinder 3 is carried by the spiral block 31 and grinding rod 32... As the rubber powder moves between the spiral block 31 and the grinding rod 32, the spiral block 31 and the grinding block 33 squeeze the rubber powder, twisting it apart. This prevents the rubber powder from sticking together due to improper storage after long-term storage, which would prevent it from being sieved. At the same time, it improves the fineness of the rubber powder, reduces the removal of rubber powder that cannot be sieved, and improves the utilization rate. Rubber powder of qualified size is discharged through the wall of the filter cylinder 3. During the crushing process, the rubber powder in the filter cylinder 3 is cooled through the air outlet 2 to prevent the rubber powder from melting and sticking to the device due to the temperature generated by friction. At the same time, the diagonal arrangement generates vortices in the filter cylinder 3, increasing the moving speed of the rubber powder. The qualified rubber powder is thrown out by the centrifugal force generated by the vortex. The isolation block 4 isolates the drive gear 42 and transmission gear 43 and other components to prevent the rubber powder from contacting the drive gear 42 and transmission gear 43 and causing blockage, which would affect the operation of the device.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A powder sieving device, characterized in that, include: The cylinder (1) has a feed inlet (11) at its upper end and a discharge outlet (12) fixedly connected to the side wall of the cylinder (1). The screening assembly is located inside the screening drill between the cylinder (1) and the feed inlet (11). The screening assembly is used to screen rubber particles. The screening assembly includes an air outlet (2), a filter cylinder (3) and a drive motor (41). The filter cylinders (3) are arranged in an array on the cylinder (1). The filter cylinders (3) are rotatably connected to the cylinder (1). The filter cylinders (3) are rotatably connected to the corresponding ports of the feed inlet (11). The air outlets (2) are symmetrically arranged on the outside of each filter cylinder (3). The drive motor (41) is located at the bottom of the cylinder (1). Each filter cylinder (3) is connected to the drive motor (41) for transmission.

2. The powder sieving device according to claim 1, characterized in that, The drive motor (41) is fixedly connected to the bottom of the cylinder (1), and the output shaft of the drive motor (41) is fixedly connected to the drive gear (42). Multiple transmission gears (43) mesh around the drive gear (42), and the corresponding filter cylinder (3) is fixedly connected to the transmission gear (43).

3. The powder sieving device according to claim 1, characterized in that, Each filter cylinder (3) has a spiral block (31) fixedly connected to its inner wall, and a grinding rod (32) fixedly connected to the middle of each filter cylinder (3). Each grinding rod (32) has an array of grinding blocks (33).

4. The powder sieving device according to claim 3, characterized in that, Each of the spiral blocks (31) is spiral in shape, and the grinding blocks (33) on each grinding rod (32) are spiral in the opposite direction to the spiral blocks (31) in the longitudinal direction. The corresponding grinding blocks (33) are fixedly connected to the grinding rod (32).

5. The powder sieving device according to claim 1, characterized in that, Each of the aforementioned air outlets (2) is fixedly connected to the cylinder (1), and the air outlets of the corresponding air outlets (2) are diagonally arranged with the filter cylinder (3).

6. The powder sieving device according to claim 1, characterized in that, The bottom of the cylinder (1) is fixedly connected to an isolation block (4), and each filter cylinder (3) is rotatably connected to the isolation block (4). There is a cavity between the isolation block (4) and the cylinder (1).

7. The powder sieving device according to claim 2, characterized in that, The drive gear (42) and each transmission gear (43) are installed in the cavity between the isolation block (4) and the cylinder (1).

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