Filtering type double-screw extruder

Abstract

The utility model discloses a filtering type double-screw extruder which comprises an extruder body and a pressing filtering assembly, the pressing filtering assembly is connected to the position of a discharging port of the extruder body, a base plate is arranged below the extruder body, a supporting rod is arranged below the base plate, and the pressing filtering assembly is connected to the discharging port of the extruder body. A downward-pressing filtering assembly is arranged at the top of the extruder body, a discharging groove is connected to the end, away from the downward-pressing filtering assembly, of the extruder body, an auxiliary discharging assembly is arranged at the end, away from the downward-pressing filtering assembly, of the top of the extruder body, and one end of the auxiliary discharging assembly extends into the discharging groove. The device is simple in structure and convenient to operate, subsequent use is prevented from being affected, the problem that subsequent use is affected due to the fact that part of materials are not liquefied thoroughly in the background technology is solved, material downward pressing is completed through the rotary groove, the material filtering efficiency is improved, the filter screen and the downward pressing bin are detached and installed by inserting the inserting block into the connecting block, and the materials on the filter screen are convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw extruders, in particular to a filtering twin-screw extruder. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. It has the characteristics of mixing and plasticizing performance, exhaust performance, extrusion stability, etc. It is currently widely used in the processing and use of extruded products.

[0003] The existing Chinese patent with publication number discloses a twin-screw plastic mother-and-child granulator extruder with publication number CN217047424U. By setting a single extrusion screw, a mother-and-child screw and a heating box, the effect of the mother-and-child screw is utilized, and the mother-and-child screw can rotate in different directions through the set gears. At the same time, the plasticized material can be extruded through the set single extrusion screw, and the material can be liquefied through the set heating box, thereby improving the granulation effect of the plastic granulator. However, the above patent has the problem that some materials are not completely liquefied, which affects the subsequent use. Therefore, a filtering twin-screw extruder is proposed. Utility Model Content

[0004] The utility model aims to overcome the problem in the prior art that some materials are not completely liquefied, which affects subsequent use, and provides a filtering twin-screw extruder that filters the materials after extrusion by pressing down the filtering component to avoid affecting subsequent use.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a filtering twin-screw extruder, comprising an extruder body and a downward pressure filter assembly, the downward pressure filter assembly is connected to the discharge port position of the extruder body, a base plate is provided under the extruder body, a support rod is provided under the base plate, a feed trough is connected to one end of the extruder body away from the downward pressure filter assembly, an auxiliary feed trough is provided on the end of the top of the extruder body away from the downward pressure filter assembly, and one end of the auxiliary feed trough extends into the feed trough.

[0006] Preferably, the down-pressure filter assembly includes a down-pressure bin, a push column, a rotary groove, a control wheel, a pressure plate, a driving motor, a rotary plate, a push rod, a limit rod, a filter screen and a filter tube, the down-pressure bin is arranged on the top of the base plate, the lower end of the outer side surface of the down-pressure bin is connected to the side surface of the extruder body, the filter tube is installed under the down-pressure bin and under the base plate, the filter screen is arranged in the filter tube, the limit rod is arranged under the upper wall of the down-pressure bin, the push rod is movably sleeved on the limit rod, the axis of the limit rod and the filter tube are arranged to coincide, the push columns are evenly distributed on the push rod, and the pressure The plate is movable in the lower pressure bin, the pressure plate is connected under the push rod, side plate mechanisms are extended upward at both ends of the pressure plate, the swivel plate is slidably arranged between the side plate mechanisms on both sides, the swivel groove runs through the swivel plate, the drive motor is movably arranged on the swivel plate, the control wheel is fixedly connected under the drive motor, the drive motor and the control wheel are respectively arranged on both sides of the swivel plate, and arc groove structures are evenly distributed and penetrated at the edge of the control wheel, the push column moves and is stuck in the arc groove structure, and the push column and the arc groove structure are arranged one by one.

[0007] Preferably, a connecting block is symmetrically provided at the upper end of the side of the filter tube, and a fixed bin is provided under the lower pressure bin. When the lower pressure bin and the filter tube are installed, the fixed bin and the connecting block are in contact on the side. A reset spring is provided in the fixed bin, and an insert block is movably provided in the fixed bin. One end of the insert block is fixedly connected to the reset spring, and the other end of the insert block moves through the fixed bin and is inserted into the connecting block. A pull rod is provided on the side of the connecting block, and the pull rod passes through the axis of the reset spring and penetrates the side wall of the fixed bin. A pull plate is provided on the side of the pull rod away from the insert block.

[0008] Preferably, guide plates are symmetrically provided on the bottom surface of the inner wall of the lower pressure bin, the guide plates are inclined, one end of the guide plates contacts the filter tube, and the other end of the guide plates is fixed on the side wall of the lower pressure bin, an external protrusion is provided under the pressure plate, and the shape of the external protrusion and the guide plate match.

[0009] Preferably, one end of the insert block close to the connecting block is in the shape of a right triangle, and the hypotenuse of the right triangle of the insert block is arranged away from the lower pressure bin.

[0010] Preferably, the auxiliary feeding assembly includes a driving bin, a rotating motor, a support plate, a transmission belt, a rotating rod and a side rod, the support plate being arranged on the extruder body, the support plate being an L-shaped structure, one end of the support plate being located above one side of a feeding chute, a driving bin being arranged under the support plate, the rotating motor being arranged under one end of the driving bin away from the feeding chute, the upper end of the rotating rod being rotatably arranged in the driving bin, the lower end of the rotating rod being located in the feeding chute, the side rods being evenly distributed on the sides of the rotating rod and being arranged in the feeding chute, the transmission belt being arranged in the driving bin and being sleeved on the rotating motor and the rotating rod.

[0011] Preferably, ribs are symmetrically provided at the lower end of the side surface of the support plate, and the ribs are provided on the extruder body.

[0012] Preferably, an auxiliary plate is provided under the driving bin, and the auxiliary plate is provided on the extruder body.

[0013] The beneficial effects of the utility model are:

[0014] The utility model filters the material after extrusion by pressing down the filter assembly to avoid affecting the subsequent use, solves the problem in the background technology that some materials are not completely liquefied, which affects the subsequent use, utilizes the rotary trough to complete the pressing of the material, speeds up the material filtering efficiency, and completes the disassembly and installation of the filter screen and the pressing bin by inserting the plug block into the connecting block, which is convenient for cleaning the material on the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the filtering twin-screw extruder of the utility model.

[0016] Figure 2 yes Figure 1 Structural diagram of the auxiliary blanking component.

[0017] Figure 3 yes Figure 1 Diagram of the internal structure of the mid-lower pressure filter assembly.

[0018] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0019] In the figure: 1. extruder body; 2. down-pressure filter assembly; 3. base plate; 4. support rod; 5. discharge chute; 6. auxiliary discharge assembly; 7. down-pressure bin; 8. push column; 9. rotary chute; 10. control wheel; 11. pressure plate; 12. drive motor; 13. rotary plate; 14. push rod; 15. limit rod; 16. filter screen; 17. filter tube; 18. connecting block; 19. fixed bin; 20. reset spring; 21. plug block; 22. pull rod; 23. pull plate; 24. guide plate; 25. external protrusion; 26. drive bin; 27. rotating motor; 28. support plate; 29. ​​transmission belt; 30. rotating rod; 31. side rod; 32. rib plate; 33. auxiliary plate. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore should not be understood as a limitation on the present invention.

[0022] The present embodiment provides a filtering twin-screw extruder, comprising an extruder body 1 and a downward pressure filter assembly 2, the downward pressure filter assembly 2 is connected to the discharge port of the extruder body 1, a base plate 3 is provided under the extruder body 1, a support rod 4 is provided under the base plate 3, a feed chute 5 is connected to one end of the extruder body 1 away from the downward pressure filter assembly 2, an auxiliary feed chute 6 is provided on the top end of the extruder body 1 away from the downward pressure filter assembly 2, and one end of the auxiliary feed chute 6 extends into the feed chute 5.

[0023] In one embodiment, the specific down-pressure filter assembly 2 includes a down-pressure bin 7, a push column 8, a rotary groove 9, a control wheel 10, a pressure plate 11, a drive motor 12, a rotary plate 13, a push rod 14, a limit rod 15, a filter screen 16 and a filter tube 17. The down-pressure bin 7 is arranged at the top of the base plate 3, and the lower end of the outer side surface of the down-pressure bin 7 is connected to the side surface of the extruder body 1. The filter tube 17 is installed under the down-pressure bin 7 and is arranged under the base plate 3. The filter screen 16 is arranged in the filter tube 17, the limit rod 15 is arranged under the upper wall of the down-pressure bin 7, and the push rod 14 is arranged under the upper wall of the down-pressure bin 7. The movable sleeve is connected to the limit rod 15, the axis of the limit rod 15 and the filter tube 17 are arranged to coincide, the push column 8 is evenly distributed on the push rod 14, the pressure plate 11 is movably arranged in the lower pressure bin 7, the pressure plate 11 is connected under the push rod 14, and the two ends of the pressure plate 11 extend upward to be provided with a side plate mechanism, the rotating plate 13 is slidably arranged between the side plate mechanisms on both sides, the rotating groove 9 is arranged through the rotating plate 13, the driving motor 12 is movably arranged on the rotating plate 13, the control wheel 10 is fixedly connected under the driving motor 12, and the driving motor 12 and the control wheel 10 They are respectively arranged on both sides of the rotary plate 13, and arc groove structures are evenly distributed and penetrated at the edge of the control wheel 10. The push column 8 moves and is inserted into the arc groove structure. The push column 8 and the arc groove structure are arranged one by one. The end of the plug block 21 close to the connecting block 18 is in the shape of a right triangle, and the right triangle hypotenuse of the plug block 21 is arranged away from the lower pressure bin 7. The driving motor 12 drives the control wheel 10 to rotate, and the control wheel 10 drives the push column 8 and the push plate to descend together through its own arc groove structure, and then drives the pressure plate 11 to descend, and the pressure plate 1 1 presses the material below toward the filter tube 17 to speed up the material filtration. When the control wheel 10 contacts the push column 8 at the uppermost end of the push plate, the press plate 11 also drops to the lowermost end. At this time, the drive motor 12 continues to drive the control wheel 10 to rotate, and the press plate 11 cannot drop. Therefore, the drive motor 12 drives the control wheel 10 to move along the other side of the push rod 14 of the rotary groove 9. The drive motor 12 continues to control the control wheel 10 to rotate. At this time, the control wheel 10 drives the push rod 14 and the press plate 11 to rise, thereby realizing reciprocating downward pressure.

[0024] In one embodiment, a connecting block 18 is symmetrically provided at the upper end of the side of the specific filter tube 17, and a fixed bin 19 is provided under the lower pressure bin 7. When the lower pressure bin 7 and the filter tube 17 are installed, the fixed bin 19 and the connecting block 18 are in contact on the side. A reset spring 20 is provided in the fixed bin 19, and an insert block 21 is movably provided in the fixed bin 19. One end of the insert block 21 is fixedly connected to the reset spring 20, and the other end of the insert block 21 moves through the fixed bin 19 and is inserted into the connecting block 18. A pull rod 22 is provided on the side of the connecting block 18. The pull rod 22 passes through the axis of the reset spring 20 and penetrates the side wall of the fixed bin 19. A pull plate 23 is provided on the side of the pull rod 22 away from the insert block 21.

[0025] In one embodiment, a guide plate 24 is symmetrically provided on the bottom surface of the inner wall of the specific lower pressure bin 7. The guide plate 24 is inclined. One end of the guide plate 24 contacts the filter tube 17, and the other end of the guide plate 24 is fixed on the side wall of the lower pressure bin 7. An external protrusion 25 is provided under the pressure plate 11, and the shape of the external protrusion 25 and the guide plate 24 match.

[0026] In one embodiment, a specific auxiliary unloading component 6 includes a driving bin 26, a rotating motor 27, a support plate 28, a transmission belt 29, a rotating rod 30 and a side rod 31. The support plate 28 is arranged on the extruder body 1, and the support plate 28 is an L-shaped structure. One end of the support plate 28 is located above one side of the unloading chute 5. A driving bin 26 is provided under the support plate 28. The rotating motor 27 is provided under the end of the driving bin 26 away from the unloading chute 5. The upper end of the rotating rod 30 is rotatably arranged in the driving bin 26, and the lower end of the rotating rod 30 is located in the unloading chute 5. The side rod 31 is evenly distributed on the side of the rotating rod 30 and is arranged in the unloading chute 5. The transmission belt 29 is provided on the driving bin 26 and is sleeved on the rotating motor 27 and the rotating rod 30. Ribs 32 are symmetrically provided at the lower end of the side of the support plate 28, and the ribs 32 are provided on the extruder body 1. An auxiliary plate 33 is provided under the driving bin 26, and the auxiliary plate 33 is provided on the extruder body 1.

[0027] The working process of the filtering twin-screw extruder in this embodiment is as follows: when unloading, the rotating motor 27 and the driving motor 12 are started, and the rotating motor 27 drives the rotating rod 30 and the side rod 31 to rotate through the transmission belt 29, and drives the material to move in the unloading chute 5 through the side rod 31 to ensure smooth unloading of the material; the driving motor 12 drives the control wheel 10 to rotate, and the control wheel 10 drives the push column 8 and the push plate to descend together through its own arc groove structure, and then drives the pressing plate 11 to descend, and the pressing plate 11 presses the material below toward the filter tube 17 to speed up the filtration of the material. After the control wheel 10 contacts the push column 8 at the upper end of the push plate, the pressure plate 11 also drops to the lower end. At this time, the drive motor 12 continues to drive the control wheel 10 to rotate, and the pressure plate 11 cannot drop. Therefore, the drive motor 12 will drive the control wheel 10 to move along the other side of the push rod 14 of the rotary groove 9. The drive motor 12 continues to control the control wheel 10 to rotate. At this time, the control wheel 10 drives the push rod 14 and the pressure plate 11 to rise, thereby realizing reciprocating downward pressure, accelerating filtration, and solving the problem that some materials are not completely liquefied as mentioned in the background technology, thus affecting subsequent use.

[0028] Pull the pull plate 23 to pull the insert block 21 out of the connection block 18 , then remove the filter tube 17 and clean the material accumulation on the filter screen 16 .

[0029] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A filtering twin-screw extruder, characterized in that: The invention comprises an extruder body (1) and a downward pressure filter assembly (2), wherein the downward pressure filter assembly (2) is connected to the discharge port of the extruder body (1), a base plate (3) is provided under the extruder body (1), a support rod (4) is provided under the base plate (3), a feed chute (5) is connected to one end of the extruder body (1) away from the downward pressure filter assembly (2), an auxiliary feed chute assembly (6) is provided on the top end of the extruder body (1) away from the downward pressure filter assembly (2), and one end of the auxiliary feed chute assembly (6) extends into the feed chute (5); The down-pressure filter assembly (2) comprises a down-pressure bin (7), a push column (8), a rotary groove (9), a control wheel (10), a pressure plate (11), a drive motor (12), a rotary plate (13), a push rod (14), a limit rod (15), a filter screen (16) and a filter tube (17), wherein the down-pressure bin (7) is arranged on the top of the base plate (3), the lower end of the outer side surface of the down-pressure bin (7) is connected to the side surface of the extruder body (1), the filter tube (17) is installed under the down-pressure bin (7) and arranged under the base plate (3), the filter screen (16) is arranged in the filter tube (17), the limit rod (15) is arranged under the upper wall of the down-pressure bin (7), the push rod (14) is movably sleeved on the limit rod (15), the axis of the limit rod (15) and the filter tube (17) are arranged to coincide with each other, and the push column (8) The push rod (14) is evenly distributed on the push rod (14), the pressure plate (11) is movably arranged in the lower pressure bin (7), the pressure plate (11) is connected under the push rod (14), the two ends of the pressure plate (11) are extended upwardly with side plate mechanisms, the rotating plate (13) is slidably arranged between the side plate mechanisms on both sides, the rotating groove (9) passes through the rotating plate (13), the driving motor (12) is movably arranged on the rotating plate (13), the control wheel (10) is fixedly connected under the driving motor (12), the driving motor (12) and the control wheel (10) are respectively arranged on both sides of the rotating plate (13), and the edge of the control wheel (10) is evenly distributed and penetrated with arc groove structures, the push column (8) is movably inserted into the arc groove structure, and the push column (8) and the arc groove structure are arranged in a one-to-one manner.

2. The filtering twin-screw extruder according to claim 1, characterized in that: A connecting block (18) is symmetrically provided at the upper end of the side surface of the filter tube (17), and a fixed bin (19) is provided under the lower pressure bin (7). When the lower pressure bin (7) and the filter tube (17) are installed, the fixed bin (19) and the connecting block (18) are in contact with each other on the side surface. A reset spring (20) is provided in the fixed bin (19), and an insert block (21) is movably provided in the fixed bin (19). One end of the insert block (21) is fixedly connected to the reset spring (20), and the other end of the insert block (21) is movable through the fixed bin (19) and inserted into the connecting block (18). A pull rod (22) is provided on the side surface of the connecting block (18), and the pull rod (22) passes through the axis of the reset spring (20) and passes through the side wall of the fixed bin (19). A pull plate (23) is provided on the side of the pull rod (22) away from the insert block (21).

3. The filtering twin-screw extruder according to claim 1, characterized in that: A guide plate (24) is symmetrically arranged on the bottom surface of the inner wall of the lower pressure bin (7). The guide plate (24) is arranged at an angle. One end of the guide plate (24) contacts the filter tube (17), and the other end of the guide plate (24) is fixed on the side wall of the lower pressure bin (7). An external protrusion (25) is arranged under the pressure plate (11), and the external protrusion (25) and the guide plate (24) are matched in shape.

4. The filtering twin-screw extruder according to claim 2, characterized in that: One end of the insert block (21) close to the connection block (18) is in the shape of a right triangle, and the hypotenuse of the right triangle of the insert block (21) is arranged away from the lower pressing bin (7).

5. The filtering twin-screw extruder according to claim 1, characterized in that: The auxiliary material discharge assembly (6) comprises a driving bin (26), a rotating motor (27), a support plate (28), a transmission belt (29), a rotating rod (30) and a side rod (31). The support plate (28) is arranged on the extruder body (1). The support plate (28) is an L-shaped structure. One end of the support plate (28) is located above one side of the material discharge chute (5). A driving bin (26) is arranged below the support plate (28). The rotating motor (27) is arranged below one end of the driving bin (26) away from the material discharge chute (5). The upper end of the rotating rod (30) is rotatably arranged in the driving bin (26). The lower end of the rotating rod (30) is located in the material discharge chute (5). The side rod (31) is evenly distributed on the side of the rotating rod (30) and is arranged in the material discharge chute (5). The transmission belt (29) is arranged in the driving bin (26) and is sleeved on the rotating motor (27) and the rotating rod (30).

6. The filtering twin-screw extruder according to claim 5, characterized in that: Ribs (32) are symmetrically arranged at the lower end of the side surface of the support plate (28), and the ribs (32) are arranged on the extruder body (1).

7. The filtering twin-screw extruder according to claim 5, characterized in that: An auxiliary plate (33) is provided under the driving chamber (26), and the auxiliary plate (33) is provided on the extruder body (1).

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