Feeding anti-blocking device of double-screw extruder

Abstract

The utility model belongs to the technical field of double-screw extruders, and particularly relates to a feeding anti-blocking device of a double-screw extruder, which aims at solving the problem that a feeding port is blocked in the background technology, and adopts the following scheme that the feeding anti-blocking device comprises a feeding frame, a fixed shaft is welded on the inner wall of the feeding frame, and screens are rotationally connected to two sides of the outer wall of the fixed shaft. The screen can prevent large-size impurities from entering the extruder, meanwhile, the rotating shaft is driven by the servo motor to rotate, and the conical head on the rotating shaft can crush viscous materials, so that the feeding difficulty is reduced, the feeding port of the extruder is prevented from being blocked, and the service life of the extruder is prolonged. The connecting plate is pushed downwards through the air cylinder so that the two sealing plates can be controlled to move downwards at the same time, at the moment, the ends, away from the fixing shaft, of the two screens incline downwards under the influence of gravity, the cleaning space is increased, the structure is reasonable, impurities attached to the surfaces of the screens can be quickly swept away, and the screen cleaning difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a feed anti-blocking device for a twin-screw extruder. Background Art

[0002] Twin-screw extruder is a commonly used extrusion equipment. It uses two screws to rotate synchronously to extrude the material and heat and melt it before forming it through a die head. It is widely used in plastics, rubber, chemicals, food and other fields.

[0003] During the use of the twin-screw extruder, the feed port may be blocked, return material and other problems may occur, which may cause the extruder to stop or the product quality to deteriorate. The blockage of the feed port is caused by the material material. The high viscosity of the material and the excessive impurities in the material will affect the smooth delivery of the material into the extruder. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a feed anti-blocking device for a twin-screw extruder, which overcomes the deficiencies of the prior art and effectively solves the problem of feed port blockage.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A feed anti-blocking device for a twin-screw extruder comprises a feed frame, a fixed shaft is welded to the inner wall of the feed frame, and screens are rotatably connected to both sides of the outer wall of the fixed shaft, a servo motor is fixedly connected to the outer wall of one side of the feed frame by bolts, and the output shaft of the servo motor is fixedly connected to a rotating shaft, and a cone head is welded to the outer wall of the rotating shaft;

[0007] Side bottom plates are welded to the outer walls of both sides of the feed frame, and a sealing plate is slidably connected to the inner wall of the side bottom plate. A connecting plate is welded between the two sealing plates, and a cylinder is fixedly connected to the outer wall at the top of the connecting plate.

[0008] Preferably, the cylinder is fixedly connected to the outer wall on the other side of the feed frame by bolts.

[0009] Preferably, the outer walls on both sides of the feed frame are provided with cleaning openings, and the size of the cleaning openings is adapted to the size of the sealing plate.

[0010] Preferably, a fixing plate is welded to the outer wall of one side of the sealing plate, and a guide rod is slidably connected to the inner wall of the fixing plate, and the guide rod is fixedly connected to the inner wall of the feed frame.

[0011] Preferably, a feed frame is welded to the outer wall of the bottom of the feed frame.

[0012] Preferably, the bottom of the feed frame is fixedly connected to the chassis by bolts, and a feed port is provided on the top outer wall of the chassis.

[0013] Preferably, a driving motor is installed on an outer wall of one side of the chassis, and a twin screw is installed on one side of a gear box of the driving motor.

[0014] The beneficial effects of the utility model are:

[0015] 1. The feed anti-blocking device of the twin-screw extruder designed in this invention has two screens set on the inner wall of the feed frame. The screens can block large-sized impurities from entering the extruder. At the same time, the servo motor drives the rotating shaft to rotate. The cone head on the rotating shaft will break the sticky material, reducing the difficulty of feeding and preventing the feed port of the extruder from being blocked.

[0016] 2. The feed anti-blocking device of the twin-screw extruder designed in this invention can control the two sealing plates to move downward at the same time by pushing the connecting plate downward through the cylinder. At this time, the two screens are tilted downward at one end away from the fixed axis under the influence of gravity, and larger cleaning ports appear on both sides of the feed frame, which increases the cleaning space. The structure is reasonable, and impurities attached to the surface of the screen can be quickly swept away, reducing the difficulty of cleaning the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a feed anti-blocking device for a twin-screw extruder proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a feed frame connection structure of a feed anti-blocking device for a twin-screw extruder proposed by the utility model;

[0019] Figure 3 This is a schematic structural diagram of the feed frame opening state of a feed anti-blocking device for a twin-screw extruder proposed by the utility model;

[0020] Figure 4 The utility model provides a schematic diagram of the chassis connection structure of a feed anti-blocking device for a twin-screw extruder.

[0021] In the figure: 1. feed frame; 2. fixed shaft; 3. screen; 4. servo motor; 5. rotating shaft; 6. cone head; 7. side bottom plate; 8. sealing plate; 9. connecting plate; 10. cylinder; 11. cleaning port; 12. fixed plate; 13. guide rod; 14. unloading frame; 15. chassis; 16. feed port; 17. drive motor; 18. twin screw. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Embodiment 1, refer to Figure 2 A feed anti-blocking device for a twin-screw extruder comprises a feed frame 1, a fixed shaft 2 is welded to the inner wall of the feed frame 1, and screens 3 are rotatably connected to both sides of the outer wall of the fixed shaft 2, a servo motor 4 is fixedly connected to the outer wall of one side of the feed frame 1 by bolts, and the output shaft of the servo motor 4 is fixedly connected to a rotating shaft 5, and a cone head 6 is welded to the outer wall of the rotating shaft 5.

[0024] In this embodiment, two screens 3 are arranged on the inner wall of the feed frame 1, and the screens 3 can block large-sized impurities from entering the extruder. At the same time, the rotating shaft 5 is driven to rotate by the servo motor 4, and the cone head 6 on the rotating shaft 5 can break the sticky material, thereby reducing the difficulty of feeding and preventing the feed port 16 of the extruder from being blocked.

[0025] Example 2, refer to Figure 3 A feed anti-blocking device for a twin-screw extruder, side bottom plates 7 are welded to the outer walls of both sides of a feed frame 1, and a sealing plate 8 is slidably connected to the inner wall of the side bottom plate 7, a connecting plate 9 is welded between the two sealing plates 8, and a cylinder 10 is fixedly connected to the outer wall of the top of the connecting plate 9.

[0026] In this embodiment, by pushing the connecting plate 9 downward through the cylinder 10, the two sealing plates 8 can be controlled to move downward at the same time. At this time, the two screens 3 are tilted downward at one end away from the fixed axis 2 under the influence of gravity, and larger cleaning ports 11 appear on both sides of the feed frame 1, which increase the cleaning space. The structure is reasonable and can quickly sweep away impurities attached to the surface of the screen 3, reducing the difficulty of cleaning the screen 3.

[0027] Reference Figure 3 The cylinder 10 is fixedly connected to the outer wall of the other side of the feed frame 1 by bolts.

[0028] Reference Figure 3 The outer walls of both sides of the feed frame 1 are provided with cleaning ports 11, and the size of the cleaning ports 11 is adapted to the size of the sealing plate 8.

[0029] Reference Figure 3 A fixing plate 12 is welded to the outer wall of one side of the sealing plate 8 , and a guide rod 13 is slidably connected to the inner wall of the fixing plate 12 , and the guide rod 13 is fixedly connected to the inner wall of the feed frame 1 .

[0030] Reference Figure 3 A feed frame 14 is welded to the outer wall at the bottom of the feed frame 1 .

[0031] Reference Figure 4 The bottom of the material discharging frame 14 is fixedly connected to the chassis 15 by bolts, and a material feeding port 16 is opened on the top outer wall of the chassis 15.

[0032] Reference Figures 1 to 4A driving motor 17 is installed on the outer wall of one side of the chassis 15 , and a double screw 18 is installed on one side of the gear box of the driving motor 17 .

[0033] Working principle: After the material enters the feed frame 1, the screen 3 can block large-sized impurities from continuing to fall. At the same time, the servo motor 4 drives the rotating shaft 5 to rotate, and the cone head 6 on the rotating shaft 5 will crush the sticky material. The crushed material will enter the chassis 15 along the discharge frame 14, and the driving motor 17 drives the twin screw 18 to rotate to extrude the material.

[0034] When cleaning the screen 3, the cylinder 10 pushes the connecting plate 9 downward to control the two sealing plates 8 to move downward at the same time. At this time, the two screens 3 are tilted downward at one end away from the fixed shaft 2 under the influence of gravity, and the operator can use a cleaning tool through the cleaning port 11 to quickly sweep away impurities attached to the surface of the screen 3.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A feed anti-blocking device for a twin-screw extruder, comprising a feed frame (1), characterized in that: A fixed shaft (2) is welded to the inner wall of the feed frame (1), and screens (3) are rotatably connected to both sides of the outer wall of the fixed shaft (2); a servo motor (4) is fixedly connected to the outer wall of one side of the feed frame (1) by bolts, and the output shaft of the servo motor (4) is fixedly connected to a rotating shaft (5), and a cone head (6) is welded to the outer wall of the rotating shaft (5); Side bottom plates (7) are welded to the outer walls of both sides of the feed frame (1), and a sealing plate (8) is slidably connected to the inner wall of the side bottom plate (7), a connecting plate (9) is welded between the two sealing plates (8), and a cylinder (10) is fixedly connected to the outer wall of the top of the connecting plate (9).

2. A feed anti-blocking device for a twin-screw extruder according to claim 1, characterized in that: The cylinder (10) is fixedly connected to the outer wall of the other side of the feed frame (1) by means of bolts.

3. A feed anti-blocking device for a twin-screw extruder according to claim 1, characterized in that: The outer walls of both sides of the feed frame (1) are provided with cleaning openings (11), and the size of the cleaning openings (11) is adapted to the size of the sealing plate (8).

4. A feed anti-blocking device for a twin-screw extruder according to claim 1, characterized in that: A fixing plate (12) is welded to the outer wall of one side of the sealing plate (8), and a guide rod (13) is slidably connected to the inner wall of the fixing plate (12), and the guide rod (13) is fixedly connected to the inner wall of the feed frame (1).

5. The feed anti-blocking device for a twin-screw extruder according to claim 1, characterized in that: A feed frame (14) is welded to the outer wall of the bottom of the feed frame (1).

6. A feed anti-blocking device for a twin-screw extruder according to claim 5, characterized in that: The bottom of the material unloading frame (14) is fixedly connected to the chassis (15) by bolts, and a material feeding port (16) is provided on the top outer wall of the chassis (15).

7. A feed anti-blocking device for a twin-screw extruder according to claim 6, characterized in that: A driving motor (17) is installed on an outer wall of one side of the chassis (15), and a twin screw (18) is installed on one side of a gear box of the driving motor (17).

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