A high efficiency polyurethane particle screening device

Abstract

The utility model discloses a kind of high-efficiency polyurethane particle screening devices, the utility model includes box, the box one side is provided with collection box, collection box inner wall is fixedly connected with filter screen, collection box inside is provided with the accommodating cavity located at the one end of filter screen, pull-out box is slidably connected in accommodating cavity inner wall, the side wall of accommodating cavity is provided with the discharge port located above the one end of filter screen, the inner wall of accommodating cavity is rotatably connected with closure plate, and the connecting place of closure plate and accommodating cavity is provided with torsion spring for the reset of closure plate, the inner wall of collection box is rotatably provided with reciprocating screw rod, reciprocating screw rod outer wall is threadedly cooperated with moving plate, and the bottom of moving plate is fixed with cleaning brush, and the outer wall of the side of moving plate towards closure plate is fixedly connected with fixed rod;The utility model is provided with accommodating cavity, pull-out box, closure plate and fixed rod, dust can be concentrated in pull-out box, and dust can be cleaned by pulling out pull-out box.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane processing technology, and in particular to a high-efficiency polyurethane particle screening device. Background Technology

[0002] Polyurethane granules are granular products obtained by pelletizing polyurethane after synthesis. During the processing of polyurethane, it is necessary to screen larger particles, so screening devices are required.

[0003] A search revealed a Chinese patent publication number CN222807423U, which discloses a polyurethane particle screening device. The device includes a feed pipe with a fixed cylinder fixedly connected between its two sides. The fixed cylinder has an inlet and an outlet on its top and bottom sides, respectively. A guide plate is symmetrically installed at the top of the feed pipe. A rotating shaft is installed at the output end of a drive motor, and a rotating roller is installed on the outer wall of the rotating shaft. A storage trough is located inside the rotating roller. This patent, by setting up the rotating shaft, rotating roller, and storage trough, allows for continuous feeding, ensuring that particles can enter the screening area uniformly and orderly.

[0004] Although the filter screen can be cleaned by a cleaning brush, it still requires manual opening of the door panel to manually clean the dust on the filter screen, which is inconvenient and may cause dust to be stirred up. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency polyurethane particle screening device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency polyurethane particle screening device includes a housing. A collection box is provided on one side of the housing. A filter screen is fixedly connected to the inner wall of the collection box. A receiving cavity located at one end of the filter screen is provided inside the collection box. A pull-out box is slidably connected to the inner wall of the receiving cavity. An outlet is provided on the side wall of the receiving cavity located above one end of the filter screen. A sealing plate is rotatably connected to the inner wall of the receiving cavity. A torsion spring for resetting the sealing plate is provided at the connection between the sealing plate and the receiving cavity. A reciprocating screw rotates on the inner wall of the collection box. A moving plate is threadedly fitted to the outer wall of the reciprocating screw. The moving plate is slidably connected to the inner wall of the collection box. A cleaning brush is fixed at the bottom end of the moving plate and fits against the top outer wall of the filter screen. A fixing rod is fixedly connected to the outer wall of the moving plate facing the sealing plate.

[0008] As a further improvement of this utility model: a temporary storage cavity is provided inside the box, and a feeding port communicating with the temporary storage cavity is provided on the top of the box.

[0009] As a further improvement of this utility model: an exhaust fan is installed on the side wall of the collection box below the filter screen, and an air suction hood is provided on the inner wall of the box below the temporary storage chamber. The air suction hood is connected to the top of the collection box through a pipe.

[0010] As a further improvement of this utility model: a screening plate is provided on the inner wall of the box, and the bottom of the screening plate is connected to the box body through multiple elastic connectors. The screening plate is located below the temporary storage cavity, and a feeding component is provided on one side of the bottom of the temporary storage cavity.

[0011] As a further improvement of this utility model: the side wall of the box is provided with a discharge port, and the end of the screening plate near the discharge port is inclined to the ground.

[0012] As a further embodiment of this utility model: the inner wall of the box is rotatably connected to a cam located below the screening plate, the outer wall of the box is rotatably connected to a pulley, the shaft of the pulley is connected to the shaft of the cam, and the outer wall of the collection box is provided with another pulley connected to one end of the reciprocating screw.

[0013] As a further embodiment of this utility model: the two pulleys are connected by a toothed belt drive, and a rotary motor that drives one of the pulleys to rotate is installed on the outer wall of the housing.

[0014] As a further improvement of this utility model: the reciprocating screw is fitted with two folding protective covers on its outer wall. The two folding protective covers are located on both sides of the moving plate, and one end of the folding protective cover is connected to the outer wall of the moving plate, while the other end of the folding protective cover is connected to the inner wall of the collection box.

[0015] Compared with the prior art, this utility model provides a high-efficiency polyurethane particle screening device, which has the following beneficial effects:

[0016] 1. This utility model, by providing a receiving cavity, a pull-out box, a sealing plate and a fixing rod, can concentrate dust in the pull-out box, and the dust can be cleaned by pulling out the pull-out box.

[0017] 2. This utility model, by setting up a pulley, a toothed belt and a cam, can actively drive the screening plate to vibrate, and at the same time drive the cam and the reciprocating screw to rotate through a power source, thereby reducing the arrangement of power sources.

[0018] 3. This utility model protects the outer wall of the reciprocating screw by providing a folding protective cover, thus preventing dust from adhering to the surface of the reciprocating screw.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of a high-efficiency polyurethane particle screening device proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the collection box of a high-efficiency polyurethane particle screening device proposed in this utility model;

[0022] Figure 3 This is a side view of a high-efficiency polyurethane particle screening device proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the internal structure of a high-efficiency polyurethane particle screening device proposed in this utility model.

[0024] In the diagram: 1. Box body; 2. Feed port; 3. Collection box; 4. Filter screen; 5. Reciprocating screw; 6. Receiving cavity; 7. Pull-out box; 8. Sealing plate; 9. Moving plate; 10. Cleaning brush; 11. Fixed rod; 12. Pulley; 13. Toothed belt; 14. Screening plate; 15. Cam; 16. Suction hood; 17. Temporary storage cavity; 18. Discharge assembly; 19. Folding protective cover. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1

[0028] A high-efficiency polyurethane particle screening device, such as Figures 1 to 4As shown, the device includes a housing 1, with a temporary storage chamber 17 inside. A feeding port 2, communicating with the temporary storage chamber 17, is located on the top of the housing 1. A collection box 3 is located on one side of the housing 1. A filter screen 4 is fixedly connected to the inner wall of the collection box 3. A receiving cavity 6 located at one end of the filter screen 4 is located inside the collection box 3. A pull-out box 7 is slidably connected to the inner wall of the receiving cavity 6. An outlet is located above one end of the filter screen 4 on the side wall of the receiving cavity 6. A sealing plate 8 is rotatably connected to the inner wall of the receiving cavity 6, and a setting for resetting the sealing plate 8 is provided at the connection between the sealing plate 8 and the receiving cavity 6. The torsion spring is used. The inner wall of the collection box 3 is rotated by a reciprocating screw 5. The outer wall of the reciprocating screw 5 is threaded with a moving plate 9. The moving plate 9 is slidably connected to the inner wall of the collection box 3. A cleaning brush 10 is fixed at the bottom of the moving plate 9. The cleaning brush 10 is attached to the top outer wall of the filter screen 4. An exhaust fan located below the filter screen 4 is installed on the side wall of the collection box 3. A fixing rod 11 is fixedly connected to the outer wall of the moving plate 9 facing the sealing plate 8. An air suction hood 16 located below the temporary storage chamber 17 is provided on the inner wall of the box body 1. The air suction hood 16 is connected to the top of the collection box 3 through a pipe.

[0029] The inner wall of the housing 1 is provided with a screening plate 14. The bottom of the screening plate 14 is connected to the housing 1 through multiple elastic connectors. The elastic components can be a telescopic cylinder-spring structure. The screening plate 14 is located below the temporary storage cavity 17. A feeding assembly 18 is provided on one side of the bottom of the temporary storage cavity 17. The feeding assembly 18 is the same as the combined structure of the fixed cylinder, inlet, outlet, drive motor, rotating shaft, rotating roller and storage tank in the patent with Chinese patent publication number CN222807423U. The side wall of the housing 1 has a row of... The screening plate 14 is inclined to the ground at the end near the discharge port. The inner wall of the box 1 is rotatably connected to a cam 15 located below the screening plate 14. The outer wall of the box 1 is rotatably connected to a pulley 12. The shaft of the pulley 12 is connected to the shaft of the cam 15. The outer wall of the collection box 3 is provided with another pulley 12 connected to one end of the reciprocating screw 5. The two pulleys 12 are driven by a toothed belt 13. A rotary motor that drives one of the pulleys 12 is installed on the outer wall of the box 1. A collection frame is provided at the bottom of the box 1.

[0030] The electrical components, such as the rotary motor and the exhaust fan, are all electrically connected to the controller, which can be any existing device that provides control, such as a computer.

[0031] During operation, polyurethane granules are poured into the temporary storage chamber 17 through the feeding port 2 for temporary storage. The feeding assembly 18 conveys the granules in the temporary storage chamber 17 downwards at a uniform speed. The screening plate 14 screens the granules. Small granules pass through the screening plate 14 and fall into the collection box, while the remaining granules are discharged from the discharge port along the screening plate 14. At the same time, the drive motor drives a pulley 12 to rotate, and the cam 15 rotates with the pulley 12. During the rotation of the cam 15, it intermittently pushes the screening plate 14 upwards. Then, the screening plate 14 is reset under the action of the elastic connector, generating vibration to accelerate the screening of granules. The exhaust fan creates a negative pressure in the collection box 3, and the dust in the box 1 is sucked into the collection box 3 through the suction hood 16 and the pipe. The filter screen 4 filters the air entering the collection box 3. The filter screen 4 traps dust particles, while another pulley 12 rotates via a toothed belt 13, causing the reciprocating screw 5 to rotate. The reciprocating screw 5 causes the moving plate 9 to move back and forth along the inner wall of the collection box 3, cleaning the surface of the collection box 3 with the cleaning brush 10. When the moving plate 9 approaches the receiving cavity 6, the fixing rod 11 pushes the sealing plate 8 to one side. As the moving plate 9 continues to move, the dust particles are pushed into the pull-out box 7 by the cleaning brush 10. Then the cleaning brush 10 returns to its original position. During the cleaning process, the dust particles filtered by the filter screen 4 are first pushed by the cleaning brush 10 to the end of the filter screen 4 away from the receiving cavity 6, and then carried to the receiving cavity 6 by the cleaning brush 10 during the next movement of the cleaning brush 10 towards the receiving cavity 6.

[0032] By providing a receiving cavity 6, a pull-out box 7, a sealing plate 8, and a fixing rod 11, dust can be concentrated in the pull-out box 7, and the dust can be cleaned by pulling out the pull-out box 7.

[0033] By incorporating a pulley 12, a toothed belt 13, and a cam 15, the screening plate 14 can be actively driven to vibrate. Simultaneously, a power source drives the cam 15 and the reciprocating screw 5 to rotate, reducing the need for power source placement.

[0034] Example 2

[0035] A high-efficiency polyurethane particle screening device is proposed. This embodiment is based on Embodiment 1 and makes the following improvements, such as... Figure 2 As shown, the reciprocating screw 5 is fitted with two folding protective covers 19 on its outer wall. The two folding protective covers 19 are located on both sides of the moving plate 9, and one end of the folding protective cover 19 is connected to the outer wall of the moving plate 9, while the other end of the folding protective cover 19 is connected to the inner wall of the collection box 3.

[0036] When the moving plate 9 moves along the reciprocating screw 5, one folding protective cover 19 retracts as the moving plate 9 moves, and the other folding protective cover 19 extends. The folding protective cover 19 protects the outer wall of the reciprocating screw 5 and prevents dust from adhering to the surface of the reciprocating screw 5.

[0037] By providing a folded protective cover 19, the outer wall of the reciprocating screw 5 is protected to prevent dust from adhering to the surface of the reciprocating screw 5.

[0038] Working principle: During operation, polyurethane granules are poured into the temporary storage chamber 17 through the feeding port 2 for temporary storage. The feeding component 18 conveys the granules in the temporary storage chamber 17 downwards at a uniform speed. The screening plate 14 screens the granules. Small granules pass through the screening plate 14 and fall into the collection box, while the remaining granules are discharged from the discharge port along the screening plate 14. At the same time, the drive motor drives a pulley 12 to rotate, and the cam 15 rotates with the pulley 12. During the rotation of the cam 15, it intermittently pushes the screening plate 14 upwards. Then, the screening plate 14 is reset under the action of the elastic connector, generating vibration to accelerate the screening of granules. The exhaust fan creates a negative pressure in the collection box 3, and the dust in the box 1 is sucked into the collection box 3 through the suction hood 16 and the pipe. The filter screen 4 filters the airflow entering the collection box 3, and the dust is trapped on the surface of the filter screen 4. Another pulley 12 drives the toothed belt 1 The transmission of 3 rotates accordingly, driving the reciprocating screw 5 to rotate. The reciprocating screw 5 causes the moving plate 9 to move back and forth along the inner wall of the collection box 3. The cleaning brush 10 cleans the surface of the collection box 3. One folding protective cover 19 retracts as the moving plate 9 moves, and the other folding protective cover 19 extends. The folding protective cover 19 protects the outer wall of the reciprocating screw 5 to prevent dust from adhering to the surface of the reciprocating screw 5. When the moving plate 9 approaches the receiving cavity 6, the fixing rod 11 will push the sealing plate 8 to one side. As the moving plate 9 continues to move, the dust will be pushed into the pull-out box 7 by the cleaning brush 10. Then the cleaning brush 10 will reset. During the cleaning process of the cleaning brush 10, the dust filtered by the filter screen 4 will first be pushed by the cleaning brush 10 to the end of the filter screen 4 away from the receiving cavity 6. Then, during the next movement of the cleaning brush 10 towards the receiving cavity 6, the dust will be carried to the receiving cavity 6 by the cleaning brush 10.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency polyurethane particle screening device, comprising a housing (1), characterized in that, A collection box (3) is provided on one side of the box body (1). A filter screen (4) is fixedly connected to the inner wall of the collection box (3). A receiving cavity (6) located at one end of the filter screen (4) is provided inside the collection box (3). A pull-out box (7) is slidably connected to the inner wall of the receiving cavity (6). An outlet located above one end of the filter screen (4) is provided on the side wall of the receiving cavity (6). A sealing plate (8) is rotatably connected to the inner wall of the receiving cavity (6). The connection between the sealing plate (8) and the receiving cavity (6) is... A torsion spring for resetting the sealing plate (8) is provided. A reciprocating screw (5) rotates on the inner wall of the collection box (3). A moving plate (9) is threaded on the outer wall of the reciprocating screw (5). The moving plate (9) is slidably connected to the inner wall of the collection box (3). A cleaning brush (10) is fixed at the bottom of the moving plate (9). The cleaning brush (10) is attached to the top outer wall of the filter screen (4). A fixing rod (11) is fixedly connected to the outer wall of the moving plate (9) facing the sealing plate (8).

2. The high-efficiency polyurethane particle screening device according to claim 1, characterized in that, The box (1) is provided with a temporary storage cavity (17) inside, and a feeding port (2) communicating with the temporary storage cavity (17) is provided on the top of the box (1).

3. The high-efficiency polyurethane particle screening device according to claim 1, characterized in that, The side wall of the collection box (3) is equipped with an exhaust fan located below the filter screen (4), and the inner wall of the box body (1) is provided with an air suction hood (16) located below the temporary storage chamber (17). The air suction hood (16) is connected to the top of the collection box (3) through a pipe.

4. The high-efficiency polyurethane particle screening device according to claim 1, characterized in that, The inner wall of the box (1) is provided with a screening plate (14). The bottom of the screening plate (14) is connected to the box (1) through multiple elastic connectors. The screening plate (14) is located below the temporary storage cavity (17). A feeding assembly (18) is provided on one side of the bottom of the temporary storage cavity (17).

5. The high-efficiency polyurethane particle screening device according to claim 4, characterized in that, The side wall of the box (1) is provided with a discharge port, and the end of the screening plate (14) near the discharge port is inclined to the ground.

6. The high-efficiency polyurethane particle screening device according to claim 5, characterized in that, The inner wall of the box (1) is rotatably connected to a cam (15) located below the screening plate (14), and the outer wall of the box (1) is rotatably connected to a pulley (12). The shaft of the pulley (12) is connected to the shaft of the cam (15). The outer wall of the collection box (3) is provided with another pulley (12) connected to one end of the reciprocating screw (5).

7. The high-efficiency polyurethane particle screening device according to claim 6, characterized in that, The two pulleys (12) are connected by a toothed belt (13) for transmission, and a rotary motor that drives one of the pulleys (12) to rotate is installed on the outer wall of the housing (1).

8. The high-efficiency polyurethane particle screening device according to claim 1, characterized in that, The reciprocating screw (5) is fitted with two folding protective covers (19) on its outer wall. The two folding protective covers (19) are located on both sides of the moving plate (9), and one end of the folding protective cover (19) is connected to the outer wall of the moving plate (9), and the other end of the folding protective cover (19) is connected to the inner wall of the collection box (3).

Images