Double-screw grinding device

Abstract

The utility model belongs to the technical field of grinding equipment, and discloses a double-screw grinding device which comprises a double-screw grinding machine, a grinding trough which is arranged on the inner wall of the double-screw grinding machine and is used for materials to pass through, and two grinding screws which are arranged on the inner wall of the grinding trough and are used for grinding the materials. According to the grinding device, when sundries on the grinding screws need to be cleaned, the sealing plate can be opened, at the moment, the two cleaning nozzles correspond to the bottom sides of the two grinding screws respectively, the telescopic connecting pipe can be connected with a water pump to pump water, and water is sprayed on the grinding screws through the cleaning nozzles; in the process, the double-screw grinding machine and the adjusting motor can be started at the same time, the grinding screw can rotate under the action of the double-screw grinding machine, the cleaning spray head can be controlled to reciprocate at the bottom of the grinding screw under the action of the adjusting motor, and water can be evenly washed on the grinding screw in cooperation with rotation of the grinding screw. Therefore, impurities on the grinding screw rod are washed away, and the grinding effect of the grinding screw rod is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, and particularly relates to a double-screw grinding device. Background Art

[0002] The double-screw grinding equipment is a special grinding machine, and its core part consists of two specially designed screws. These two screws are parallel to each other, meshing with each other, not interfering with each other, and having the same rotation direction.

[0003] In the prior art, when the double-screw grinding equipment grinds some wet materials, some of the ground particles are likely to adhere to the grinding screws. Excessive impurities on the screws may cause the fluidity of the materials to decrease during the grinding process, increase the friction between the screws and the barrel, and lead to increased wear of the screws and the barrel, thus affecting the grinding effect of the equipment. Summary of the Utility Model

[0004] Aiming at the above existing technical deficiencies, the purpose of the utility model is to provide a double-screw grinding device, which can clean the grinding screws in the double-screw grinding equipment and prevent the adhesion of impurities.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A double-screw grinding device, comprising:

[0007] A double-screw grinding machine;

[0008] A grinding material tank, opened on the inner wall of the double-screw grinding machine for materials to pass through;

[0009] Two grinding screws, both arranged on the inner wall of the grinding material tank, and the two grinding screws are arranged in a staggered manner for grinding materials;

[0010] A sealing structure, arranged on the inner wall of the double-screw grinding machine for blocking or opening the grinding material tank;

[0011] A flushing structure, arranged on the inner wall of the double-screw grinding machine for flushing the grinding screws;

[0012] A linkage cleaning structure, arranged on the sealing structure and the flushing structure for cleaning the impurities on the surface of the grinding screws.

[0013] Preferably, the sealing structure includes:

[0014] Two sealing plates, both slidably installed on the inner wall of the double-screw grinding machine, and the two grinding screws are respectively in contact with the two sealing plates for opening or closing the grinding material tank;

[0015] Two electric push rods, the output ends of which are respectively arranged on one side of two sealing plates, are used to control the movement of the sealing plates;

[0016] Two support frames are both arranged on the twin-screw grinder. The two electric push rods are respectively fixedly installed on one side of the two support frames. The output ends of the two electric push rods respectively penetrate through the two support frames and are used to support the electric push rods.

[0017] Preferably, the flushing structure includes:

[0018] A cleaning nozzle, located at the bottom side of the grinding screw, is used for spraying water for flushing;

[0019] A telescopic connecting pipe is arranged on the cleaning nozzle and is communicated with the cleaning nozzle for conveying water;

[0020] A mounting seat is arranged on the telescopic connecting pipe to provide support for the telescopic connecting pipe;

[0021] A movable seat is arranged at the bottom side of the mounting seat;

[0022] An adjusting assembly is arranged on the movable seat and is used for adjusting the spraying position of the movable seat and the cleaning nozzle.

[0023] Preferably, the adjusting assembly includes:

[0024] A linkage slider is slidably installed on the inner wall of the twin-screw grinder. The movable seat is slidably installed on the linkage slider and is used for driving the movable seat to move;

[0025] A reciprocating lead screw is rotatably installed on the twin-screw grinder and is threadedly installed on the inner wall of the linkage slider for driving the linkage slider to move;

[0026] An adjusting motor is arranged on one side of the twin-screw grinder. The output end of the adjusting motor is fixedly installed on the reciprocating lead screw and is used for driving the reciprocating lead screw to rotate;

[0027] A blanking groove is opened on the inner wall of the twin-screw grinder and is communicated with the grinding material groove for the sundries cleaned down to fall out.

[0028] Preferably, the linkage cleaning structure includes:

[0029] Four slide bars are respectively symmetrically arranged on both sides of the two sealing plates;

[0030] Four connecting rods are respectively movably installed on one side of the four slide bars;

[0031] A guiding frame is rotatably installed on the four connecting rods. The movable seat is slidably installed on the inner wall of the guiding frame and is used for driving the movable seat to lift;

[0032] A vertical sliding groove is opened on the inner wall of the linkage slider for limiting and guiding;

[0033] A vertical guide rod, which is slidably installed on the inner wall of the vertical chute and fixedly installed on one side of the movable seat, and cooperates with the vertical chute to prevent the movable seat from shifting;

[0034] Two fixed seats, both arranged on the movable seat;

[0035] Two cleaning brushes, respectively arranged on the top sides of the two fixed seats, corresponding to the two grinding screws respectively, for cleaning the grinding screws;

[0036] A plurality of limiting components, arranged on the guiding frame, for limiting the position of the guiding frame;

[0037] A guiding component, arranged on the guiding frame, to prevent deviation between the movable seat and the guiding frame;

[0038] A plurality of pulling components, arranged on the sliding rod, for pulling the connecting rod to move.

[0039] Preferably, the limiting component includes:

[0040] A guiding chute, opened on the inner wall of the blanking chute;

[0041] A limiting slider, slidably installed in the guiding chute and arranged on one side of the guiding frame, and cooperating with the guiding chute to guide the moving direction of the guiding frame;

[0042] A spring, one end arranged on the limiting slider, and the other end of the spring arranged on the inner wall of the guiding chute, for squeezing the limiting slider and restricting its position;

[0043] A limiting guide rod, arranged on the inner wall of the guiding chute, the limiting slider is slidably installed on the spring, and the spring is slidably sleeved on the limiting guide rod to avoid bending during the stretching process of the spring.

[0044] Preferably, the guiding component includes:

[0045] Two horizontal chutes, respectively opened on both sides of the movable seat;

[0046] Two horizontal guiding strips, respectively slidably installed in the two horizontal chutes, and the two horizontal guiding strips are respectively fixedly installed on the inner walls of both sides of the guiding frame, and cooperating with the horizontal chutes can prevent the movable seat from shifting.

[0047] Preferably, the pulling component includes:

[0048] A linkage hole, opened on the inner wall of the sliding rod;

[0049] A linkage shaft, movably installed in the linkage hole.

[0050] The beneficial effects of the present utility model are as follows:

[0051] In the present utility model, by driving the electric push rods on both sides, the opening and closing of two sealing plates can be controlled, and thus the abrasive tank can be opened or closed. When grinding materials, the sealing plates can be closed. At this time, the materials can flow in the abrasive tank and be ground by the grinding screw. When it is necessary to clean the debris on the grinding screw, the sealing plates can be opened. At this time, the two cleaning nozzles will respectively correspond to the bottom sides of the two grinding screws. The telescopic connecting pipe can be connected to a water pump to pump water, so that the water is sprayed on the grinding screw through the cleaning nozzles. During the process, the twin-screw grinder and the adjustment motor can be started simultaneously. Under the action of the twin-screw grinder, the grinding screw can rotate, and under the action of the adjustment motor, the cleaning nozzle can be controlled to reciprocate at the bottom of the grinding screw. Combining with the rotation of the grinding screw, the water can evenly wash the grinding screw, so as to wash away the impurities on the grinding screw and avoid affecting its grinding effect.

[0052] In the present utility model, when the two sealing plates are opened, under the action of the connecting rod, the guiding frame and the movable seat can be driven to rise, and then the fixed seat and the cleaning brush can be driven to rise. Finally, the two sealing plates are completely opened, and the two cleaning brushes will respectively contact the two grinding screws. And under the reciprocating movement of the linkage slider, the cleaning brush can be driven to reciprocate. Combining with the self-rotation of the grinding screw, the cleaning brush can clean the impurities attached to the grinding screw, further improving the cleaning effect on the grinding screw. Description of the Drawings

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0054] Figure 1 It is a schematic structural diagram of a twin-screw grinding device provided by an embodiment of the present utility model;

[0055] Figure 2 It is a schematic cross-sectional structure diagram of a twin-screw grinding device provided by an embodiment of the present utility model;

[0056] Figure 3 It is a schematic connection structure diagram of the slide rod of a twin-screw grinding device provided by an embodiment of the present utility model;

[0057] Figure 4 It is a schematic cross-sectional structure diagram of the guiding frame of a twin-screw grinding device provided by an embodiment of the present utility model.

[0058] Explanation of the Reference Numerals in the Drawings:

[0059] 1. Twin-screw grinder; 2. Abrasive tank; 3. Grinding screw; 4. Sealing plate; 401. Electric push rod; 402. Support frame; 5. Cleaning nozzle; 501. Telescopic connecting pipe; 502. Mounting seat; 503. Movable seat; 504. Linking slider; 505. Reciprocating lead screw; 506. Adjusting motor; 507. Feeding chute; 6. Slide bar; 601. Link; 602. Guide frame; 603. Vertical chute; 604. Vertical guide rod; 605. Fixed seat; 606. Cleaning brush; 607. Guide chute; 608. Limit slider; 609. Spring; 610. Limit guide rod; 611. Horizontal chute; 612. Horizontal guide bar; 613. Linking hole; 614. Linking shaft. Detailed implementation manners

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0061] Embodiment 1:

[0062] As Figures 1 to 4 shown, the present invention provides a twin-screw grinding device, including: a twin-screw grinder 1, an abrasive tank 2 opened on the inner wall of the twin-screw grinder 1 for the passage of materials, and two grinding screws 3 arranged on the inner wall of the abrasive tank 2 for grinding materials, and the two grinding screws 3 are arranged in an intersecting manner.

[0063] In order to clean the impurities attached to the surface of the grinding screw 3 and improve the grinding effect of the grinding screw 3, a sealing structure for blocking or opening the abrasive tank 2 is arranged on the inner wall of the twin-screw grinder 1, and a flushing structure for flushing the grinding screw 3 is arranged on the inner wall of the twin-screw grinder 1.

[0064] Among them, the sealing structure includes two sealing plates 4 slidably installed on the inner wall of the twin-screw grinder 1 for opening or closing the abrasive tank 2, the two grinding screws 3 are respectively in contact with the two sealing plates 4, two electric push rods 401 arranged on one side of the two sealing plates 4 for controlling the movement of the sealing plates 4, two support frames 402 arranged on the twin-screw grinder 1 for supporting the electric push rods 401, the two electric push rods 401 are respectively fixedly installed on one side of the two support frames 402, and the output ends of the two electric push rods 401 respectively penetrate through the two support frames 402, so that the output ends of the electric push rods 401 can push and pull the two sealing plates 4 to move, and the moving sealing plates 4 can slide on the inner wall of the twin-screw grinder 1 and control the opening or closing of the abrasive tank 2.

[0065] Among them, the flushing structure includes a cleaning nozzle 5 located at the bottom side of the grinding screw 3 for spraying water for flushing, a telescopic connecting pipe 501 arranged on and connected to the cleaning nozzle 5 and used for conveying water, a mounting seat 502 arranged on the telescopic connecting pipe 501 to provide support for the telescopic connecting pipe 501, a movable seat 503 arranged at the bottom side of the mounting seat 502, an adjusting assembly arranged on the movable seat 503 for adjusting the spraying positions of the movable seat 503 and the cleaning nozzle 5, connecting two telescopic connecting pipes 501 to a water pump to pump water, so that the water is sprayed on the two grinding screws 3 through the two cleaning nozzles 5 respectively. At the same time, the twin-screw grinder 1 can be started to rotate the two grinding screws 3, so that the water can be evenly sprayed on the surface of the grinding screws 3.

[0066] Among them, the adjusting assembly includes a linkage slider 504 slidably mounted on the inner wall of the twin-screw grinder 1 for driving the movable seat 503 to move. The movable seat 503 is slidably mounted on the linkage slider 504. A reciprocating lead screw 505 is rotatably mounted on the twin-screw grinder 1 and threadedly mounted on the inner wall of the linkage slider 504 for driving the linkage slider 504 to move. An adjusting motor 506 is arranged on one side of the twin-screw grinder 1 for driving the reciprocating lead screw 505 to rotate. The output end of the adjusting motor 506 is fixedly mounted on the reciprocating lead screw 505. A blanking groove 507 is opened on the inner wall of the twin-screw grinder 1 and communicated with the abrasive groove 2 for the sundries cleaned down to fall out. When the adjusting motor 506 is started, the output end of the adjusting motor 506 can drive the reciprocating lead screw 505 to rotate, thereby driving the linkage slider 504 to reciprocate on the inner wall of the twin-screw grinder 1. The continuously moving movable seat 503 will drive the cleaning nozzle 5 to linearly move on one side of the grinding screw 3. Cooperating with the rotation of the grinding screw 3, the cleaning effect is further improved.

[0067] Embodiment 2:

[0068] On the basis of Embodiment 1, in order to further improve the cleaning effect on the grinding screw 3 and sweep away the impurities attached to the grinding screw 3, a linkage cleaning structure for cleaning the impurities on the surface of the grinding screw 3 is arranged on the sealing structure and the flushing structure.

[0069] Among them, the linkage cleaning structure includes four sliding rods 6 symmetrically arranged on both sides of the two sealing plates 4 respectively, four connecting rods 601 movably installed on one side of the four sliding rods 6 respectively, a guiding frame 602 rotatably installed on the four connecting rods 601 for driving the lifting of the movable seat 503, the movable seat 503 is slidably installed on the inner wall of the guiding frame 602, a vertical chute 603 for limiting and guiding is opened on the inner wall of the linkage slider 504, a vertical guide rod 604 slidably installed on the inner wall of the vertical chute 603 and fixedly installed on one side of the movable seat 503 to cooperate with the vertical chute 603 to prevent the movable seat 503 from shifting, two fixed seats 605 arranged on the movable seat 503, two cleaning brushes 606 respectively arranged on the top sides of the two fixed seats 605 for cleaning the grinding screw 3, the two cleaning brushes 606 respectively correspond to the two grinding screws 3, a plurality of limiting components arranged on the guiding frame 602 for limiting the position of the guiding frame 602, a guiding component arranged on the guiding frame 602 to prevent the deviation between the movable seat 503 and the guiding frame 602, a plurality of pulling components arranged on the sliding rod 6 for pulling the connecting rod 601 to move. During the movement of the sealing plate 4, the corresponding two sliding rods 6 will be driven to move, so that the moving sliding rod 6 drives one end of the connecting rod 601 to flip and move, and then the other end of the connecting rod 601 flips on the guiding frame 602 and drives the guiding frame 602 to rise. During the rising process of the guiding frame 602, the movable seat 503 will be driven to rise, so that the movable seat 503 drives the cleaning brush 606 to rise. Finally, the two sealing plates 4 are completely opened, and the two cleaning brushes 606 continue to rise and contact the surfaces of the two grinding screws 3. During the rotation of the grinding screws 3, the surfaces of the grinding screws 3 can be cleaned.

[0070] Among them, the limiting component includes a guiding chute 607 opened on the inner wall of the blanking chute 507, a limiting slider 608 slidably installed in the guiding chute 607 and arranged on one side of the guiding frame 602 to cooperate with the guiding chute 607 to guide the moving direction of the guiding frame 602, one end is arranged on the limiting slider 608, and the other end is arranged on the inner wall of the guiding chute 607 for extruding the limiting slider 608 and limiting its position by a spring 609, a limiting guide rod 610 arranged on the inner wall of the guiding chute 607 to prevent it from bending during the stretching process of the spring 609, the limiting slider 608 is slidably installed on the spring 609, the spring 609 is slidably sleeved on the limiting guide rod 610. During the rising process of the guiding frame 602, the limiting sliders 608 on both sides will be driven to slide in the corresponding guiding chutes 607, so as to guide the movement of the guiding frame 602. The continuously moving limiting slider 608 will slide in the limiting guide rod 610 and squeeze the spring 609.

[0071] Among them, the guiding component includes two horizontal sliding grooves 611 opened on both sides of the movable seat 503, and two horizontal guiding bars 612 slidably installed in the two horizontal sliding grooves 611 and cooperating with the horizontal sliding grooves 611 to prevent the movable seat 503 from shifting. The two horizontal guiding bars 612 are respectively fixedly installed on the inner walls of both sides of the guiding frame 602. When the movable seat 503 slides horizontally, it can slide on the two horizontal guiding bars 612 through the horizontal sliding grooves 611 on both sides, thereby guiding the movement of the movable seat 503.

[0072] Among them, the pulling component includes a linkage hole 613 opened on the inner wall of the sliding rod 6, and a linkage shaft 614 movably installed in the linkage hole 613. During the continuous movement of the sliding rod 6, the linkage hole 613 will drive the linkage shaft 614 to move, causing the linkage shaft 614 to drive one end of the connecting rod 601 to flip and move.

[0073] Working principle: When it is necessary to clean the impurities on the two grinding screws 3 in the abrasive tank 2, the electric push rods 401 on both sides can be turned on, so that the output ends of the electric push rods 401 pull the two sealing plates 4 to move. The moving sealing plates 4 can slide on the inner wall of the twin-screw grinder 1 and open the abrasive tank 2. At the same time, during the movement of the sealing plates 4, the corresponding two slide rods 6 will be driven to move, so that the moving slide rods 6 move on the linkage shaft 614 through the linkage holes 613. During the continuous movement of the slide rods 6, the linkage holes 613 will be driven to squeeze the linkage shaft 614, so that the linkage shaft 614 drives one end of the connecting rod 601 to flip and move, and then the other end of the connecting rod 601 flips on the guiding frame 602 and drives the guiding frame 602 to rise. During the rising process of the guiding frame 602, the limiting sliders 608 on both sides will slide in the corresponding guiding chutes 607, so as to guide the movement of the guiding frame 602. The continuously moving limiting sliders 608 will slide in the limiting guide rods 610 and squeeze the springs 609. The rising guiding frame 602 can drive the movable seat 503 to rise through the horizontal chute 611 and the horizontal guiding strip 612, so that the movable seat 503 drives the vertical guide rod 604 to slide vertically in the vertical chute 603, so that the linkage slider 504 and the movable seat 503 can still be connected by the vertical guide rod 604. The continuously rising movable seat 503 will drive the fixed seat 605 and the cleaning brush 606 to rise. Finally, the two sealing plates 4 are completely opened, and the two cleaning brushes 606 continue to rise and contact the surfaces of the two grinding screws 3. At the same time, the cleaning nozzles 5 on both sides correspond to the bottom sides of the two grinding screws 3 respectively. The two telescopic connecting pipes 501 can be connected to a water pump to pump water, so that the water is sprayed on the two grinding screws 3 through the two cleaning nozzles 5 respectively. At the same time, the twin-screw grinder 1 can be turned on to make the two grinding screws 3 rotate, so that the water can be evenly sprayed on the surface of the grinding screws 3. At the same time, the rotating grinding screws 3 will contact the cleaning brushes 606. At this time, the impurities on the grinding screws 3 can be cleaned by the cleaning brushes 606. During the process, the adjustment motor 506 can be turned on, and the output end of the adjustment motor 506 can drive the reciprocating lead screw 505 to rotate. When the reciprocating lead screw 505 rotates, it can drive the linkage slider 504 to reciprocate on the inner wall of the twin-screw grinder 1 through the thread fit with the linkage slider 504. When the linkage slider 504 slides, it can drive the movable seat 503 to slide through the cooperation of the vertical chute 603 and the vertical guide rod 604. The continuously moving movable seat 503 will drive the cleaning brush 606 and the cleaning nozzle 5 to move linearly on one side of the grinding screw 3, and cooperate with the rotation of the grinding screw 3 to further improve the cleaning effect. The impurities and water cleaned down can flow out through the material dropping groove 507.

[0074] After cleaning, the two sealing plates 4 are controlled by the electric push rods 401 on both sides to reset and close the abrasive tank 2. At this time, materials can be put into the abrasive tank 2 and crushed by the grinding screw 3, preventing the materials from falling out through the blanking chute 507. During the reset process of the sealing plate 4, the sliding rod 6 will be driven to reset. Slowly, the connecting rod 601 will no longer be pulled by the linkage shaft 614 and the sliding rod 6. At this time, the spring 609 in the compressed state will be released and squeeze the limit slider 608 to make it descend and reset, causing the limit slider 608 to drive the guiding frame 602 and the movable seat 503 to descend, thereby driving the cleaning brush 606 to disengage from the grinding screw 3 and avoiding interference with the grinding screw 3.

[0075] Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model is also intended to include these modifications and variations.

Claims

1. A twin-screw grinding device, characterized in that: include: Twin screw grinding machine (1); A grinding trough (2) is provided on the inner wall of the twin-screw grinding machine (1) for the material to pass through; Two grinding screws (3) are arranged on the inner wall of the grinding material trough (2), and the two grinding screws (3) are arranged alternately to grind the material; A sealing structure, arranged on the inner wall of the twin-screw grinding machine (1), used for sealing or opening the grinding material trough (2); A flushing structure, arranged on the inner wall of the twin-screw grinder (1) and used for flushing the grinding screw (3); The linkage cleaning structure is arranged on the sealing structure and the flushing structure and is used to clean impurities on the surface of the grinding screw (3).

2. A twin-screw grinding device as claimed in claim 1, characterized in that: The sealing structure comprises: Two sealing plates (4) are slidably mounted on the inner wall of the twin-screw grinder (1), and the two grinding screws (3) are respectively in contact with the two sealing plates (4) for opening or closing the grinding material trough (2); Two electric push rods (401), the output ends of which are respectively arranged on one side of the two sealing plates (4) and are used to control the movement of the sealing plates (4); The two support frames (402) are both arranged on the twin-screw grinding machine (1), and the two electric push rods (401) are respectively fixedly mounted on one side of the two support frames (402), and the output ends of the two electric push rods (401) respectively pass through the two support frames (402) for supporting the electric push rods (401).

3. A twin-screw grinding device as claimed in claim 1, characterized in that: The flushing structure comprises: A cleaning nozzle (5), located at the bottom side of the grinding screw (3), for spraying water for flushing; A telescopic connecting pipe (501) is arranged on the cleaning nozzle (5) and is connected to the cleaning nozzle (5) for conveying water; A mounting seat (502) is arranged on the telescopic connecting tube (501) to provide support for the telescopic connecting tube (501); A movable seat (503) is arranged on the bottom side of the mounting seat (502); The adjustment component is arranged on the movable seat (503) and is used to adjust the spraying position of the movable seat (503) and the cleaning nozzle (5).

4. A twin-screw grinding device as claimed in claim 3, characterized in that: The adjustment component comprises: A linkage slider (504) is slidably mounted on the inner wall of the twin-screw grinding machine (1), and a movable seat (503) is slidably mounted on the linkage slider (504) to drive the movable seat (503) to move; A reciprocating screw rod (505) is rotatably mounted on the twin-screw grinding machine (1) and threadedly mounted on the inner wall of the linkage slider (504), and is used to drive the linkage slider (504) to move; An adjusting motor (506) is arranged at one side of the twin-screw grinding machine (1), and an output end of the adjusting motor (506) is fixedly mounted on the reciprocating screw rod (505) to drive the reciprocating screw rod (505) to rotate; The material drop chute (507) is provided on the inner wall of the twin-screw grinder (1) and is connected to the grinding material chute (2) for the cleaned debris to fall out.

5. A twin-screw grinding device as claimed in claim 1, characterized in that: The linkage cleaning structure comprises: Four sliding rods (6) are symmetrically arranged on both sides of the two sealing plates (4); Four connecting rods (601) are movably mounted on one side of the four sliding rods (6); The guide frame (602) is rotatably mounted on the four connecting rods (601), and the movable seat (503) is slidably mounted on the inner wall of the guide frame (602) to drive the movable seat (503) to rise and fall; A vertical slide groove (603) is provided on the inner wall of the linkage slide block (504) and is used for position limiting and guiding; A vertical guide rod (604) is slidably mounted on the inner wall of the vertical slide groove (603) and fixedly mounted on one side of the movable seat (503), and cooperates with the vertical slide groove (603) to prevent the movable seat (503) from deflecting; Two fixed seats (605) are both arranged on the movable seat (503); Two cleaning brushes (606) are respectively arranged on the top sides of the two fixing seats (605), respectively corresponding to the two grinding screws (3), and are used to clean the grinding screws (3); A plurality of limiting components are arranged on the guide frame (602) and are used to limit the position of the guide frame (602); A guide assembly is arranged on the guide frame (602) to prevent the movable seat (503) from deviating from the guide frame (602); A plurality of pulling components are arranged on the sliding rod (6) and are used to pull the connecting rod (601) to move.

6. A twin-screw grinding device as claimed in claim 5, characterized in that: The limiting component comprises: A guide chute (607) is provided on the inner wall of the blanking chute (507); A limit slider (608) is slidably mounted in the guide slot (607) and arranged on one side of the guide frame (602), and cooperates with the guide slot (607) to guide the moving direction of the guide frame (602); A spring (609), one end of which is arranged on the limiting slider (608), and the other end of which is arranged on the inner wall of the guide slide groove (607), for squeezing the limiting slider (608) and limiting its position; The limiting guide rod (610) is arranged on the inner wall of the guide slot (607), the limiting slider (608) is slidably mounted on the spring (609), and the spring (609) is slidably sleeved on the limiting guide rod (610), so that the spring (609) can be prevented from bending during the stretching process.

7. A twin-screw grinding device as claimed in claim 5, characterized in that: The guide assembly comprises: Two horizontal slide grooves (611) are respectively provided on two sides of the movable seat (503); The two horizontal guide bars (612) are respectively slidably mounted in the two horizontal slide grooves (611). The two horizontal guide bars (612) are respectively fixedly mounted on the inner walls on both sides of the guide frame (602). The two horizontal guide bars (612) cooperate with the horizontal slide grooves (611) to prevent the movable seat (503) from being offset.

8. A twin-screw grinding device as claimed in claim 5, characterized in that: The pulling assembly comprises: A linkage hole (613) is formed on the inner wall of the slide bar (6); The linkage shaft (614) is movably mounted in the linkage hole (613).

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