Impurity filtering device for rubber compound processing and use method thereof

Abstract

The invention relates to the technical field of rubber compound processing, and particularly discloses an impurity filtering device for rubber compound processing and a using method thereof.The impurity filtering device for rubber compound processing comprises a spiral conveyor and is characterized in that a surrounding cylinder is installed on the outer side, close to one end, of the spiral conveyor; first mounting grooves are formed in the two ends of the outer wall of the surrounding cylinder, auxiliary filter plates are mounted in the first mounting grooves, and two sets of guide grooves are formed in the end, away from the spiral conveyor, of the surrounding cylinder. A flow guide closed ring and a spiral conveyor form a sliding structure, and a movable extrusion block and a third mounting groove form a sliding structure, so that when the filter plate main body is seriously blocked, the blocking of the flow guide closed ring to an auxiliary filter plate is relieved, and at the moment, raw materials can be filtered through the cooperation of the filter plate main body and the auxiliary filter plate; therefore, the problems that the efficiency rate is low and equipment is easily damaged due to the fact that the internal pressure of the surrounding cylinder is increased can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of rubber compound processing, and in particular to an impurity filtering device for rubber compound processing and a use method thereof. Background Art

[0002] Rubber compound is the raw material for manufacturing rubber products, that is, semi-finished products. Rubber products account for a large proportion in modern industrial production and daily life. Therefore, the market demand for rubber compound has always maintained a high enthusiasm. During the processing of rubber compound, it is limited by the source of raw materials, and some impurities are likely to be mixed in it. Therefore, these impurities need to be removed before further processing tasks can be carried out, thereby ensuring the quality of the final product. The impurity filtering device for rubber compound processing is one of the conventional equipment for removing impurities;

[0003] When the existing impurity filtering devices for rubber compound processing are in use, they are generally unable to quickly pass through the filtering part directly through natural forces such as gravity. Therefore, many of them use screw conveying equipment to provide pressurization so that the rubber compound can maintain a high rate through the filtering part. However, during the filtering process, the filtering part is likely to be blocked by some impurities. Once the blockage occurs, the staff cannot find it in time, which will cause the discharge rate to slow down. The discharge part is affected by the subsequent pressure, which increases its own pressure. In severe cases, it may even cause damage to the equipment. Summary of the invention

[0004] The object of the present invention is to provide an impurity filtering device for rubber compound processing and a method for using the same, so as to solve the problem that the impurity filtering device for rubber compound processing in the above background is prone to slow discharge rate or even damage to the equipment when blocked.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An impurity filtering device for processing rubber compound comprises a screw conveyor, characterized in that a surrounding cylinder is installed on the outer side of one end of the screw conveyor, both ends of the outer wall of the surrounding cylinder are provided with a first installation groove, and an auxiliary filter plate is installed inside the first installation groove, and two sets of guide grooves are opened at one end of the surrounding cylinder away from the screw conveyor;

[0007] A flow guide closed ring is arranged inside the surrounding cylinder, and a filter plate body is installed inside the flow guide closed ring;

[0008] A second mounting groove is provided at the top of the end of the surrounding cylinder away from the screw conveyor, and a third mounting groove is reserved at the top of the second mounting groove, a movable extrusion block is provided inside the third mounting groove, and a through hole is provided at one end of the movable extrusion block, an anti-slip limiting plate is installed on the side of the movable extrusion block close to the screw conveyor, and a blocking bin is installed on the side of the movable extrusion block away from the screw conveyor, and a strong spring is connected between the movable extrusion block and the surrounding cylinder;

[0009] The diversion closed ring is provided with an extrusion mechanism for positioning itself;

[0010] The surrounding cylinder is provided with an operating mechanism for driving the movable extrusion block to move.

[0011] As a further solution of the present invention: the central axis of the surrounding cylinder coincides with the central axis of the screw conveyor, and the surrounding cylinder and the screw conveyor are connected and fixed by screws.

[0012] As a further solution of the present invention: guide plates are installed at both ends of the outer wall of the diversion closed ring, and the guide plates extend to the inside of the guide groove.

[0013] As a further solution of the present invention: the movable extrusion block and the third installation groove form a relative sliding structure, and the movable extrusion block, the anti-slip limiting plate and the blocking bin are made in one piece.

[0014] As a further solution of the present invention: the extrusion mechanism includes a positioning plate, which is installed on the top of the outer wall of the guide closed ring and extends to the inside of the second installation groove. A limiting block is installed on the side of the positioning plate close to the screw conveyor.

[0015] As a further solution of the present invention: the cross-sectional shape of the limiting block is a trapezoid, and the limiting block and the positioning plate are manufactured in one piece.

[0016] As a further solution of the present invention: an elastic push switch component is arranged inside the blocking bin, and a spring body is connected between the elastic push switch component and the blocking bin, an elastic connecting wire is connected to the side of the elastic push switch component away from the screw conveyor, and the elastic connecting wire passes through the blocking bin, an end of the elastic connecting wire away from the elastic push switch component is connected to a warning light, and the warning light is fixed on the top of the outer wall of the screw conveyor, and the warning light is electrically connected to the elastic push switch component.

[0017] As a further solution of the present invention: the operating mechanism includes an installation bin, which is installed on the top of the outer wall of the surrounding tube, and a threaded rod is provided at the bottom of the interior of the installation bin, and the threaded rod passes through the installation bin, and a U-shaped lifting plate is sleeved on the outer side of the threaded rod, and the U-shaped lifting plate passes through the installation bin and the surrounding tube and extends to the interior of the through hole.

[0018] As a further solution of the present invention: the U-shaped lifting plate is slidably connected to the installation bin and the surrounding tube respectively, and the U-shaped lifting plate is threadedly connected to the threaded rod.

[0019] As a further solution of the present invention: a method for using an impurity filtering device for processing rubber mix, comprising the following steps;

[0020] S1: Operation preparation, prepare the raw materials to be filtered, and place the collection equipment of the filtered raw materials under the surrounding cylinder;

[0021] S2: Add raw materials, start the screw conveyor and add the mixed rubber to be filtered to the inlet of the screw conveyor. The screw conveyor drives the raw materials to move towards the surrounding cylinder and applies pressure. The filtered raw materials fall down along the guide closed ring into the collection device.

[0022] S3: Process observation: During the filtering process, observe whether the warning light is on and whether the material feeding is normal;

[0023] If the warning light is on, it means that the filter plate is seriously clogged. If the warning light is off and the filtered raw materials are discharged normally, it means that the filter plate is not seriously clogged.

[0024] S4: Maintenance and cleaning. After the filtering task is completed, if it is determined that the filter plate body is seriously blocked according to the previous step, rotate the threaded rod forward to drive the U-shaped lifting plate to move upward. The U-shaped lifting plate drives the movable extrusion block into the third mounting groove. At this time, the position restriction of the diversion sealing ring is released, and the diversion sealing ring is directly taken out from the surrounding tube. Clean the filter holes of the filter plate body, the inner wall of the surrounding tube, and the filter holes of the auxiliary filter plate. After reassembling the diversion sealing ring into the surrounding tube, rotate the threaded rod in the opposite direction to reposition the diversion sealing ring.

[0025] Beneficial effects of the present invention:

[0026] (1) The present invention forms a sliding structure by forming a guide closed ring and a screw conveyor, and a movable extrusion block and a third mounting groove into a sliding structure, so that when the filter plate body is seriously blocked, the limiting block on the positioning plate will squeeze the bevel of the movable extrusion block close to the screw conveyor, and once the squeezing reaches a certain degree, the limiting block will pass over the movable extrusion block, and the movable extrusion block will push the limiting block further away from the screw conveyor, thereby releasing the obstruction of the auxiliary filter plate by the guide closed ring, and the raw material can be filtered through the cooperation of the filter plate body and the auxiliary filter plate, thereby avoiding the problem of increased internal pressure of the surrounding cylinder, resulting in slow efficiency and easy damage to the equipment;

[0027] (2) The present invention provides an elastic push switch in the blocking chamber, and the elastic push switch is electrically connected to the warning light, so that when the filter plate body is seriously blocked and the limiting block is squeezed to the side of the movable squeezing block away from the screw conveyor, the limiting block will squeeze the elastic push switch, and then the warning light will light up, thereby promptly notifying the staff that the filter plate body has been seriously blocked, which is convenient for the staff to maintain the equipment after the filtration of the batch of raw materials is completed;

[0028] (3) The present invention uses a U-shaped lifting plate and a threaded rod as threaded connection, and the U-shaped lifting plate is located inside the through hole on the movable extrusion block, so that the U-shaped lifting plate will not affect the application of the movable extrusion block during use. However, the staff can drive the movable extrusion block and the blocking bin thereon to move upward by rotating forward, thereby releasing the restriction on the restriction block, thereby facilitating the staff to reset or disassemble and maintain the diversion sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0032] Figure 3 The present invention Figure 2 A magnified schematic diagram of point A;

[0033] Figure 4 It is a side structural schematic diagram of the present invention;

[0034] Figure 5 is a top cross-sectional schematic diagram of the present invention;

[0035] Figure 6 It is a schematic diagram of the main structure of the diversion closed loop in the present invention;

[0036] Figure 7 It is a schematic diagram of the main structure of the movable extrusion block in the present invention.

[0037] In the figure: 1. screw conveyor; 2. surrounding cylinder; 3. screw; 4. first mounting groove; 5. auxiliary filter plate; 6. guide groove; 7. diversion sealing ring; 8. filter plate body; 9. guide plate; 10. second mounting groove; 11. third mounting groove; 12. movable extrusion block; 13. through hole; 14. anti-slip limit plate; 15. blocking bin; 16. positioning plate; 17. limit block; 18. elastic press switch; 19. spring body; 20. elastic connecting wire; 21. warning light; 22. mounting bin; 23. threaded rod; 24. U-shaped lifting plate; 25. strong spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] See also Figure 1-Figure 6 As shown, an impurity filtering device for processing rubber compound includes a screw conveyor 1, and the screw conveyor 1 is the same as the existing screw conveying equipment;

[0041] A surrounding cylinder 2 is installed on the outer side of the screw conveyor 1 near one end, and first installation grooves 4 are opened at both ends of the outer wall of the surrounding cylinder 2, and auxiliary filter plates 5 are installed inside the first installation grooves 4. Two sets of guide grooves 6 are opened at the end of the surrounding cylinder 2 away from the screw conveyor 1;

[0042] The central axis of the surrounding tube 2 coincides with the central axis of the screw conveyor 1, and the surrounding tube 2 and the screw conveyor 1 are connected and fixed by screws 3. The staff can install the surrounding tube 2 on the screw conveyor 1 by screws 3, so that the staff can remove the entire surrounding tube 2 from the screw conveyor 1 when necessary. Furthermore, during the application process, the screw conveyor 1 and the surrounding tube 2 can be provided with protruding and corresponding recessed parts for assembly alignment;

[0043] A flow guide closed ring 7 is provided inside the surrounding tube 2, and a filter plate body 8 is installed on the inner side of the flow guide closed ring 7. Guide plates 9 are installed at both ends of the outer wall of the flow guide closed ring 7, and the guide plates 9 extend to the inside of the guide groove 6. The flow guide closed ring 7 can slide inside the surrounding tube 2, and the guide plate 9 can slide inside the guide groove 6, so that when the lateral sliding restriction of the flow guide closed ring 7 is released, it can slide out from the inside of the surrounding tube 2. In the initial assembly and use state, the flow guide closed ring 7 and the screw conveyor 1 remain in contact, and at this time, the auxiliary filter plate 5 is closed by the flow guide closed ring 7, and the filtering task is implemented through the filter plate body 8;

[0044] A second mounting groove 10 is provided at the top of the end of the surrounding tube 2 away from the screw conveyor 1, and a third mounting groove 11 is reserved at the top of the second mounting groove 10, a movable extrusion block 12 is provided inside the third mounting groove 11, and a through hole 13 is provided at one end of the movable extrusion block 12, an anti-slip limiting plate 14 is installed on the side of the movable extrusion block 12 close to the screw conveyor 1, and a blocking bin 15 is installed on the side of the movable extrusion block 12 away from the screw conveyor 1, a strong spring 25 is connected between the movable extrusion block 12 and the surrounding tube 2, the movable extrusion block 12 and the third mounting groove 11 form a relative sliding structure, and the movable extrusion block 12, the anti-slip limiting plate 14 and the blocking bin 15 are made in an integrated manner to ensure the connection strength of the movable extrusion block 12, the anti-slip limiting plate 14 and the blocking bin 15 during use;

[0045] The guide closed ring 7 is provided with an extrusion mechanism for positioning itself, and the extrusion mechanism includes a positioning plate 16, which is installed on the top of the outer wall of the guide closed ring 7, and the positioning plate 16 extends to the inside of the second mounting groove 10, and a limiting block 17 is installed on the side of the positioning plate 16 close to the screw conveyor 1, and the cross-sectional shape of the limiting block 17 is a trapezoid, and the limiting block 17 and the positioning plate 16 are made in one piece to ensure the connection strength between the limiting block 17 and the positioning plate 16 during use;

[0046] It should be noted that, in the initial assembly and use state, the limiting block 17 is located on the side of the movable extrusion block 12 close to the screw conveyor 1. When the filter plate body 8 is seriously blocked and the pressure increases, the limiting block 17 will squeeze the bevel of the movable extrusion block 12 close to the screw conveyor 1 under the action of the filter plate body 8, so that the filter plate body 8 can move away from the screw conveyor 1 to reduce the pressure. At the same time, the strong spring 25 is compressed, and the movable extrusion block 12 slides toward the inside of the third mounting groove 11. When the blockage persists and affects the discharge of materials, the limiting block 17 will eventually pass over the bevel of the movable extrusion block 12 close to the screw conveyor 1. At this time On the contrary, the limiting block 17 is subjected to the pressure provided by the bevel of the movable extrusion block 12 away from the screw conveyor 1, so that the limiting block 17 moves further in the direction away from the screw conveyor 1 until it is blocked by the blocking bin 15 and is maintained at this position under the subsequent pressure of the raw materials in the surrounding tube 2. In the process of the limiting block 17 being driven to move by the bevel of the movable extrusion block 12 away from the screw conveyor 1, the limiting block 17 drives the movement of the guide closed ring 7 so that the obstruction of the auxiliary filter plate 5 is released. At this time, the auxiliary filter plate 5 can cooperate with the filter plate body 8 without blocked filter holes to filter, thereby avoiding excessive pressure in the surrounding tube 2.

[0047] Example 2

[0048] Based on the above embodiment 1, refer to Figure 1-Figure 3 as well as Figure 7As shown, an elastic push switch 18 is arranged inside the blocking bin 15, and a spring body 19 is connected between the elastic push switch 18 and the blocking bin 15, an elastic connecting wire 20 is connected to the side of the elastic push switch 18 away from the screw conveyor 1, and the elastic connecting wire 20 runs through the blocking bin 15, and an end of the elastic connecting wire 20 away from the elastic push switch 18 is connected to a warning light 21, and the warning light 21 is fixed to the top of the outer wall of the screw conveyor 1, and the warning light 21 is electrically connected to the elastic push switch 18, so that the limiting block 17 can squeeze the elastic push switch 18 after being squeezed and moved by the bevel of the movable squeezing block 12 away from the screw conveyor 1, so that the warning light 21 lights up, thereby prompting the staff to carefully observe the working status and prepare for subsequent maintenance and cleaning tasks in time. At the same time, during the application process, the warning light 21 is not limited to the lamp prompt, and other prompting methods such as a buzzer can be used for cooperation;

[0049] It should be noted that the elastic press switch component 18 is slidably connected to the blocking chamber 15. In the initial state, the elastic press switch component 18 protrudes from the inside of the blocking chamber 15, and the elastic force of the spring body 19 is greater than the elastic force required for the elastic press switch component 18 to press itself. Therefore, after the limiting block 17 is attached to the blocking chamber 15, the elastic press switch component 18 will be squeezed into the inside of the blocking chamber 15, and at the same time, the elastic press switch component 18 will be pressed, and the warning light 21 will remain on.

[0050] Example 3

[0051] Based on the above embodiment 1, refer to Figure 1-Figure 3 As shown, an operating mechanism for driving the movable extrusion block 12 to move is provided on the surrounding tube 2, and the operating mechanism includes a mounting chamber 22, the mounting chamber 22 is installed on the top of the outer wall of the surrounding tube 2, a threaded rod 23 is provided at the bottom of the interior of the mounting chamber 22, and the threaded rod 23 penetrates the mounting chamber 22, and a U-shaped lifting plate 24 is sleeved on the outer side of the threaded rod 23, and the U-shaped lifting plate 24 penetrates the mounting chamber 22 and the surrounding tube 2 to the inside of the through hole 13, and a sufficient gap is left between the U-shaped lifting plate 24 and the inner wall of the through hole 13;

[0052] The U-shaped lifting plate 24 is slidably connected to the installation bin 22 and the surrounding cylinder 2 respectively, and the U-shaped lifting plate 24 is threadedly connected to the threaded rod 23, so that the staff can drive the U-shaped lifting plate 24 to move up and down by rotating the threaded rod 23, so that when the limiting block 17 moves to the side of the movable extrusion block 12 away from the screw conveyor 1 and performs reset maintenance, the staff can drive the U-shaped lifting plate 24 to move upward by rotating the threaded rod 23, release the restriction of the blocking bin 15 on the limiting block 17, and then the staff can take out the diversion sealing ring 7 and the filter plate body 8 thereon from the surrounding cylinder 2. At this time, the inner side wall of the surrounding cylinder 2 and both sides of the auxiliary filter plate 5 are in an exposed state, so that the maintenance and cleaning tasks can be completed conveniently and quickly;

[0053] It should be noted that the maximum downward stroke state of the U-shaped lifting plate 24 will not hinder the movable extrusion block 12 from moving into the third installation groove 11. Furthermore, the installation chamber 22 can be made of a transparent material, and the height of the U-shaped lifting plate 24 can be checked through the installation chamber 22 to avoid the U-shaped lifting plate 24 still being in a lifting state for the movable extrusion block 12 during use.

[0054] Furthermore, when rotating the threaded rod 23, an electric tool can be used, or a high number of spirals can be set on the threaded rod 23, or an existing gear reduction structure that can drive the threaded rod 23 to rotate can be set on the installation bin 22 to reduce the torque required to rotate the threaded rod 23. No restrictions are made here, thereby making it easier to accomplish the rotation task.

[0055] A method for using an impurity filtering device for processing a rubber mix, which is applied to the impurity filtering device for processing a rubber mix according to any one of claims 1 to 9, and the specific operation steps are as follows;

[0056] S1: Operation preparation, prepare the raw materials to be filtered, and place the collection equipment of the filtered raw materials under the surrounding cylinder 2;

[0057] S2: Add raw materials, start the screw conveyor 1 and add the mixed rubber to be filtered to the inlet of the screw conveyor 1. The screw conveyor 1 drives the raw materials to move toward the surrounding tube 2 and applies pressure. The filtered raw materials fall downward along the guide closed ring 7 to the collection device.

[0058] S3: Process observation: During the filtering process, observe whether the warning light 21 is on and whether the material feeding is normal;

[0059] The warning light 21 is on, indicating that the filter plate body 8 is seriously clogged. The warning light 21 is off, and the filtered raw material is discharged normally, indicating that the filter plate body 8 is not seriously clogged.

[0060] S4: Maintenance and cleaning. After the filtering task is completed, if it is determined according to the previous step that the filter plate body 8 is seriously blocked, the threaded rod 23 is rotated forward to drive the U-shaped lifting plate 24 to move upward. The U-shaped lifting plate 24 drives the movable extrusion block 12 into the interior of the third mounting groove 11. At this time, the position restriction of the guide sealing ring 7 is released, and the guide sealing ring 7 is directly taken out from the surrounding tube 2. The filter holes of the filter plate body 8 and the inner wall of the surrounding tube 2, as well as the filter holes of the auxiliary filter plate 5 are cleaned. After the guide sealing ring 7 is reassembled into the surrounding tube 2, the threaded rod 23 is rotated in the reverse direction to reposition the guide sealing ring 7.

[0061] The working principle of the present invention is as follows: the device is powered by an external power supply. When in use, the screw conveyor 1 is turned on to continuously feed the raw material into the interior of the screw conveyor 1. The screw conveyor 1 continuously transports the raw material into the surrounding cylinder 2 and provides pressure as the subsequent raw material moves, so that the raw material can pass through the filter holes on the filter plate body 8.

[0062] When the filter plate body 8 is seriously blocked, as mentioned above, the limiting block 17 will squeeze the bevel of the movable extrusion block 12 close to the side of the screw conveyor 1. With the subsequent pressure, it will pass over the movable extrusion block 12 and squeeze the elastic pressing switch 18, and finally be blocked by the blocking bin 15. After this process, the blocking of the auxiliary filter plate 5 is released, and the auxiliary filter plate 5 cooperates with the filter plate body 8 to implement the filtering task without being blocked by the filter hole. At the same time, the warning light 21 is on. At this time, the staff can manually check whether the batch of raw materials has too many impurities and need to stop the filtering task immediately. When the staff manually checks the batch of raw materials and finds that there are not too many impurities, the subsequent filtering tasks can be completed by relying on the filter plate body 8 and the filter plate body 8, and prepare tools to maintain and clean the equipment after the batch is completed.

[0063] During maintenance and cleaning, the threaded rod 23 is rotated forward by a tool, and as mentioned above, the movable extrusion block 12 is pulled to the inside of the third installation groove 11, and the movement restriction of the restriction block 17 is released, and the guide sealing ring 7 and the filter plate body 8 thereon are taken out from the surrounding tube 2, and then the equipment is fully maintained and cleaned;

[0064] After the maintenance and cleaning is completed, the diversion sealing ring 7 is reassembled into the surrounding tube 2, and then the threaded rod 23 is rotated in the reverse direction to drive the U-shaped lifting plate 24 to reset.

[0065] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An impurity filtering device for processing rubber compound, comprising a screw conveyor (1), characterized in that: A surrounding cylinder (2) is installed on the outer side of the screw conveyor (1) near one end, first installation grooves (4) are provided at both ends of the outer wall of the surrounding cylinder (2), and an auxiliary filter plate (5) is installed inside the first installation groove (4), and two sets of guide grooves (6) are provided at one end of the surrounding cylinder (2) away from the screw conveyor (1); A flow guide closed ring (7) is arranged inside the surrounding cylinder (2), and a filter plate body (8) is installed inside the flow guide closed ring (7); A second mounting groove (10) is provided at the top of the end of the surrounding cylinder (2) away from the screw conveyor (1), and a third mounting groove (11) is reserved at the top of the second mounting groove (10), a movable extrusion block (12) is provided inside the third mounting groove (11), and a through hole (13) is provided at one end of the movable extrusion block (12), an anti-slip limiting plate (14) is installed on the side of the movable extrusion block (12) close to the screw conveyor (1), and a blocking bin (15) is installed on the side of the movable extrusion block (12) away from the screw conveyor (1), and a strong spring (25) is connected between the movable extrusion block (12) and the surrounding cylinder (2); The diversion closed ring (7) is provided with an extrusion mechanism for positioning itself; The surrounding cylinder (2) is provided with an operating mechanism for driving the movable extrusion block (12) to move.

2. The impurity filtering device for rubber compound processing according to claim 1, characterized in that: The central axis of the surrounding cylinder (2) coincides with the central axis of the screw conveyor (1), and the surrounding cylinder (2) and the screw conveyor (1) are connected and fixed by screws (3).

3. The impurity filtering device for processing rubber mix according to claim 1, characterized in that: Guide plates (9) are installed at both ends of the outer wall of the guide closed ring (7), and the guide plates (9) extend to the inside of the guide groove (6).

4. The impurity filtering device for processing rubber mix according to claim 1, characterized in that: The movable extrusion block (12) and the third installation groove (11) form a relative sliding structure, and the movable extrusion block (12), the anti-slip limiting plate (14) and the blocking bin (15) are integrally manufactured.

5. The impurity filtering device for rubber compound processing according to claim 4, characterized in that: The extrusion mechanism comprises a positioning plate (16), the positioning plate (16) is installed on the top of the outer wall of the guide closed ring (7), and the positioning plate (16) extends to the inside of the second installation groove (10), and a limiting block (17) is installed on the side of the positioning plate (16) close to the screw conveyor (1).

6. The impurity filtering device for processing rubber mix according to claim 4, characterized in that: The cross-sectional shape of the limiting block (17) is a trapezoid, and the limiting block (17) and the positioning plate (16) are integrally manufactured.

7. The impurity filtering device for processing rubber mix according to claim 6, characterized in that: An elastic push switch (18) is arranged inside the blocking chamber (15), and a spring body (19) is connected between the elastic push switch (18) and the blocking chamber (15). An elastic connecting wire (20) is connected to the side of the elastic push switch (18) away from the screw conveyor (1), and the elastic connecting wire (20) passes through the blocking chamber (15). An end of the elastic connecting wire (20) away from the elastic push switch (18) is connected to a warning light (21), and the warning light (21) is fixed to the top of the outer wall of the screw conveyor (1), and the warning light (21) is electrically connected to the elastic push switch (18).

8. The impurity filtering device for processing rubber mix according to claim 1, characterized in that: The operating mechanism comprises an installation bin (22), wherein the installation bin (22) is installed on the top of the outer wall of the surrounding tube (2), a threaded rod (23) is provided at the bottom of the interior of the installation bin (22), and the threaded rod (23) passes through the installation bin (22), a U-shaped lifting plate (24) is sleeved on the outer side of the threaded rod (23), and the U-shaped lifting plate (24) passes through the installation bin (22) and the surrounding tube (2) and extends to the interior of the through hole (13).

9. The impurity filtering device for rubber compound processing according to claim 8, characterized in that: The U-shaped lifting plate (24) is slidably connected to the installation bin (22) and the surrounding tube (2) respectively, and the U-shaped lifting plate (24) is threadedly connected to the threaded rod (23).

10. A method for using an impurity filtering device for processing rubber compound, characterized in that: The impurity filtering device for processing rubber compound according to any one of claims 1 to 9 is applied, and the specific operation steps are as follows: S1: Operation preparation, prepare the raw materials to be filtered, and place a collection device for the filtered raw materials below the surrounding cylinder (2); S2: adding raw materials, starting the screw conveyor (1) and adding the mixed rubber to be filtered to the inlet of the screw conveyor (1), the screw conveyor (1) drives the raw materials to move in the direction close to the surrounding cylinder (2) and applies pressure, and the filtered raw materials fall downward along the guide closed ring (7) into the collection device; S3: process observation: during the filtering process, observe whether the warning light (21) is on and whether the material feeding is normal; The warning light (21) is on, indicating that the filter plate body (8) is seriously clogged, and the warning light (21) is not on and the filtered raw material is discharged normally, indicating that the filter plate body (8) is not seriously clogged; S4: Maintenance and cleaning. After the filtering task is completed, if it is determined according to the previous step that the filter plate body (8) is seriously blocked, the threaded rod (23) is rotated in the forward direction to drive the U-shaped lifting plate (24) to move upward. The U-shaped lifting plate (24) drives the movable extrusion block (12) into the interior of the third installation groove (11). At this time, the position restriction of the guide closed ring (7) is released, and the guide closed ring (7) is directly taken out from the surrounding tube (2). The filter holes of the filter plate body (8) and the inner wall of the surrounding tube (2) and the filter holes of the auxiliary filter plate (5) are cleaned. After the guide closed ring (7) is reassembled into the surrounding tube (2), the threaded rod (23) is rotated in the reverse direction to reposition the guide closed ring (7).

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