Auxiliary feeding device of double-screw extruder

Abstract

The utility model provides an auxiliary feeding device for a double-screw extruder, which relates to the field of feeding devices and comprises a feeding frame and a discharging hopper arranged under the feeding frame, the feeding frame and the discharging hopper are fixedly connected through connecting frames on two sides, a butt-joint frame is arranged at a gap between the feeding frame and the discharging hopper, and the butt-joint frame is fixedly connected with the discharging hopper. A filter screen is arranged in the butt joint frame, limiting frames are movably arranged at the top and the bottom end of the butt joint frame in a sleeving mode, the distance between the two limiting frames can be adjusted, limiting grooves are formed in the sides, away from each other, of the two limiting frames, and the bottom of the feeding frame and the top of the discharging hopper can be moved into the two limiting grooves correspondingly; according to the auxiliary feeding device of the double-screw extruder, provided by the utility model, materials are filtered through the filter screen which continuously vibrates, so that the materials with larger particles are left on the filter screen, and the materials with smaller particles fall to the discharge hopper and fall to the feed hopper of the double-screw extruder along the discharge pipe; and therefore, the condition that the double-screw extruder is blocked is reduced.

Description

Technical Field

[0001] This utility model relates to the field of feeding devices, and in particular to an auxiliary feeding device for a twin-screw extruder. Background Technology

[0002] A twin-screw extruder is a type of machinery widely used in the processing of polymer materials such as plastics and rubber. It uses a pair of meshing, rotating screws to perform a series of operations including material conveying, mixing, plasticizing, and extrusion molding. Based on the arrangement of the screws, twin-screw extruders can be divided into parallel twin-screw extruders and conical twin-screw extruders.

[0003] When using a twin-screw extruder, material is fed into the extruder through the feed hopper. The material is extruded from the twin-screw extruder by the continuous rotation of the two screws. During the process, if the material fed into the extruder clumps or the particles are too large, it can easily cause blockage of the twin-screw extruder, affecting the normal operation of the extrusion.

[0004] Therefore, it is necessary to provide a new auxiliary feeding device for twin-screw extruders to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an auxiliary feeding device for a twin-screw extruder.

[0006] The auxiliary feeding device for a twin-screw extruder provided by this utility model includes a feeding frame and a discharge hopper located directly below the feeding frame. The feeding frame and the discharge hopper are fixedly connected by connecting frames on both sides. A docking frame is provided at the gap between the feeding frame and the discharge hopper. A filter screen is provided inside the docking frame. Limiting frames are movably fitted at the top and bottom of the docking frame. The distance between the two limiting frames can be adjusted. Limiting grooves are provided on the sides of the two limiting frames that are far apart. The bottom of the feeding frame and the top of the discharge hopper can be moved into the two limiting grooves respectively.

[0007] Preferably, a fixed column is fixedly connected to the side wall of the docking frame, and a threaded rod is rotatably connected to the fixed column. The two ends of the threaded rod are respectively provided with a left thread and a right thread. A transmission plate is threadedly connected to both the left thread and the right thread. The two transmission plates are fixedly connected to two limit frames respectively.

[0008] Preferably, elastic elements are provided at the four corners of the bottom of the filter screen, and a vibration motor is also installed at the bottom of the filter screen.

[0009] Preferably, the elastic member comprises a vertical plate, a sleeve and a spring, one end of the vertical plate is fixedly installed on the inner wall of the docking frame, the bottom end of the sleeve is fixedly connected with the top of the vertical plate, a movable rod is movably arranged in the inner cavity of the sleeve, the top of the movable rod is fixedly connected with the bottom of the filter screen, and the two ends of the spring are fixedly connected with the bottom wall of the inner cavity of the sleeve and the end of the movable rod respectively.

[0010] Preferably, the bottom end of the discharge hopper is fixedly connected with a discharge pipe arranged obliquely.

[0011] Preferably, the feeding frame is further fixedly provided with a support, a driving motor is installed on the support, a rotating rod is fixedly connected with the output end of the driving motor, and a plurality of stirring rods are fixedly installed on the rotating rod.

[0012] Preferably, the bottom end of each of the two connecting frames is fixedly connected with a supporting leg.

[0013] Compared with the related art, the auxiliary feeding device for the double-screw extruder has the following beneficial effects:

[0014] The vibrating motor drives the filter screen to vibrate up and down, the continuously vibrating filter screen filters the material, the larger-particle material is left on the filter screen, and the smaller-particle material falls to the discharge hopper and then falls to the feeding hopper of the double-screw extruder along the discharge pipe, so that the blockage of the double-screw extruder is reduced.

[0015] When the two limiting frames are close to each other, the distance between the two limiting frames at one end is less than the distance between the feeding frame and the discharge hopper, the docking frame can be taken out, and the larger-particle material on the filter screen can be conveniently cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure;

[0017] Figure 2 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure; Figure 1 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure;

[0018] Figure 3 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure; Figure 2 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure;

[0019] Figure 4 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure; Figure 1 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure;

[0020] Figure 5 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure; Figure 4 The auxiliary feeding device for the double-screw extruder provided by the utility model has the structure schematic view as shown in the figure;

[0021] Figure 6 for Figure 3 A cross-sectional structural schematic diagram of the elastic element shown;

[0022] Figure 7 This is a schematic diagram of the auxiliary feeding device for a twin-screw extruder provided by this utility model, installed on a twin-screw extruder.

[0023] The following are the labels in the diagram: 1. Feed frame; 2. Discharge hopper; 3. Connecting frame; 4. Docking frame; 5. Filter screen; 6. Limiting frame; 7. Limiting groove; 8. Fixed column; 9. Threaded rod; 10. Transmission plate; 11. Vibration motor; 12. Vertical plate; 13. Sleeve; 14. Spring; 15. Movable rod; 16. Discharge pipe; 17. Support; 18. Drive motor; 19. Rotating rod; 20. Stirring rod; 21. Support leg. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please refer to the following: Figures 1-7 ,in, Figure 1 This is a schematic diagram of the auxiliary feeding device for a twin-screw extruder provided by this utility model; Figure 2 for Figure 1 The diagram shown is a schematic of the structure without the supporting legs. Figure 3 for Figure 2 A cross-sectional structural diagram of the structure shown. Figure 4 for Figure 1 The diagram shows the connection structure of the docking frame and the two limiting frames. Figure 5 for Figure 4 The diagram shows a decomposed structural representation of the structure. Figure 6 for Figure 3 A cross-sectional structural schematic diagram of the elastic element shown; Figure 7 This is a schematic diagram of the auxiliary feeding device for a twin-screw extruder provided by this utility model, installed on a twin-screw extruder.

[0026] In the specific implementation process, such as Figures 1-7As shown, including the feed frame 1 and the discharge hopper 2 arranged below the feed frame 1, the feed frame 1 and the discharge hopper 2 are fixedly connected through the connecting frames 3 on both sides, the bottom end of the discharge hopper 2 is fixedly connected with the inclined discharge pipe 16, the gap between the feed frame 1 and the discharge hopper 2 is provided with the butt joint frame 4, the butt joint frame 4 is provided with the filter screen 5, the top and bottom of the butt joint frame 4 are movably sleeved with the limiting frames 6, the spacing of the two limiting frames 6 can be adjusted, the side away from each other of the two limiting frames 6 is provided with the limiting groove 7, the bottom of the feed frame 1 and the top of the discharge hopper 2 can be respectively moved into the two limiting grooves 7, the continuously vibrating filter screen 5 filters the material, so that the larger particle material remains on the filter screen 5, and the smaller particle material falls to the discharge hopper 2;

[0027] The side wall of the butt joint frame 4 is fixedly connected with the fixed column 8, the fixed column 8 is rotatably connected with the threaded rod 9, the two ends of the threaded rod 9 are respectively provided with left and right threads, the left and right threads are threadedly connected with the transmission plates 10, the two transmission plates 10 are fixedly connected with the two limiting frames 6, the end of the threaded rod 9 can be installed with a hexagonal nut, so as to facilitate the rotation of the threaded rod 9, when the threaded rod 9 rotates, the two transmission plates 10 drive the two limiting frames 6 to move close to each other, when the distance between the two limiting frames 6 away from each other is less than the spacing between the feed frame 1 and the discharge hopper 2, the butt joint frame 4 can be taken out;

[0028] The bottom corners of the filter screen 5 are provided with elastic members, and the bottom end of the filter screen 5 is also provided with the vibration motor 11, the elastic members include the vertical plate 12, the sleeve 13 and the spring 14, one end of the vertical plate 12 is fixedly installed in the inner wall of the butt joint frame 4, the bottom end of the sleeve 13 is fixedly connected with the top of the vertical plate 12, the inner cavity of the sleeve 13 movably has the movable rod 15, the top of the movable rod 15 is fixedly connected with the bottom of the filter screen 5, the two ends of the spring 14 are fixedly connected with the inner cavity bottom wall of the sleeve 13 and the end of the movable rod 15, the filter screen 5 is driven by the vibration motor 11 to vibrate up and down, the movable rod 15 is telescopic in the sleeve 13, and the spring 14 is continuously telescopic;

[0029] The feed frame 1 is also fixedly installed with the support 17, the support 17 is installed with the driving motor 18, the output end of the driving motor 18 is fixedly connected with the rotating rod 19, the rotating rod 19 is fixedly installed with a plurality of stirring rods 20, the rotating rod 19 and the stirring rods 20 thereon are driven by the driving motor 18 to rotate, so as to facilitate the scattering of the caked material;

[0030] The bottom end of the two connecting frames 3 is fixedly connected with the supporting legs 21.

[0031] The working principle of the device is as follows: when the device is used, the vibration motor 11 drives the filter screen 5 to vibrate up and down, the movable rod 15 is telescopic in the sleeve 13, the spring 14 continuously telescopes, the material is put into the feeding frame 1, the driving motor 18 drives the rotating rod 19 and the stirring rod 20 on the rotating rod 19 to rotate, so that the caked material is dispersed, the material falls to the filter screen 5, the filter screen 5 continuously vibrates to filter the material, the larger particle material is left on the filter screen 5, the smaller particle material falls to the discharge hopper 2 and falls to the feeding hopper of the double-screw extruder along the discharge pipe 16, so that the blockage of the double-screw extruder is reduced, when the larger particle material on the filter screen 5 needs to be taken out, the threaded rod 9 can be rotated, when the threaded rod 9 rotates, the two transmission plates 10 drive the two limiting racks 6 to approach each other, when the distance between the two limiting racks 6 away from each other is less than the distance between the feeding frame 1 and the discharge hopper 2, the butt joint frame 4 can be taken out, and the larger particle material on the filter screen 5 is conveniently cleaned.

[0032] The circuit and the control involved in the utility model are prior art, and too much repetition is not performed here.

[0033] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A twin-screw extruder auxiliary feeding device, characterized by, Including the feeding frame (1) and the discharge hopper (2) arranged below the feeding frame (1), the feeding frame (1) and the discharge hopper (2) are fixedly connected through the connecting frames (3) on both sides, the gap between the feeding frame (1) and the discharge hopper (2) is provided with the butt joint frame (4), the filter screen (5) is arranged in the butt joint frame (4), the top and the bottom end of the butt joint frame (4) are movably sleeved with the limiting frames (6), the spacing of the two limiting frames (6) can be adjusted, the side away from each other of the two limiting frames (6) is provided with the limiting slot (7), the bottom of the feeding frame (1) and the top of the discharge hopper (2) can be respectively moved into the two limiting slots (7); The bottom end of the filter screen (5) is provided with elastic members at four corners, and the bottom end of the filter screen (5) is further provided with a vibration motor (11); The feeding frame (1) is further provided with a support (17), the support (17) is provided with a driving motor (18), the output end of the driving motor (18) is fixedly connected with a rotating rod (19), and a plurality of stirring rods (20) are fixedly connected to the rotating rod (19).

2. A twin screw extruder auxiliary feeding device according to claim 1, characterized in that, The side wall of the butt joint frame (4) is fixedly connected with a fixed column (8), the fixed column (8) is rotatably connected with a threaded rod (9), the two ends of the threaded rod (9) are respectively provided with a left thread and a right thread, and the left thread and the right thread are threadedly connected with a transmission plate (10), and the two transmission plates (10) are fixedly connected with the two limiting frames (6).

3. A twin screw extruder auxiliary feeding device according to claim 2, characterized in that, The elastic member comprises a vertical plate (12), a sleeve (13) and a spring (14), one end of the vertical plate (12) is fixedly connected to the inner wall of the butt joint frame (4), the bottom end of the sleeve (13) is fixedly connected with the top of the vertical plate (12), the inner cavity of the sleeve (13) is movably provided with a movable rod (15), the top of the movable rod (15) is fixedly connected with the bottom of the filter screen (5), and the two ends of the spring (14) are fixedly connected with the inner cavity bottom wall of the sleeve (13) and the end portion of the movable rod (15).

4. A twin screw extruder auxiliary feeding device according to claim 3, characterized in that The bottom end of the discharge hopper (2) is fixedly connected with an inclined discharge pipe (16).

5. A twin screw extruder auxiliary feeding device according to claim 4, characterized in that The bottom end of the two connecting frames (3) is fixedly connected with a supporting leg (21).

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