Anti-material-returning equipment of double-screw extruder

Abstract

The utility model discloses an anti-material-returning device of a double-screw extruder, which relates to the technical field of double-screw extruders and comprises a base, a double-screw extruder body is fixedly mounted on the outer wall of the top of the base, an exhaust pipe is arranged on the double-screw extruder body, an anti-material-returning exhaust mechanism is arranged in the exhaust pipe, and the double-screw extruder body is connected with the exhaust pipe. The anti-returning exhaust mechanism comprises a purification box, a support frame, a transmission shaft rotationally mounted at the center of the support frame, and an exhaust fan blade and a discharge auger which are fixedly mounted on the transmission shaft in a sleeving manner from top to bottom in sequence. The exhaust speed can be increased through rotation of the exhaust fan blades, returned materials in the exhaust pipe can be effectively discharged through rotation of the discharging auger, and then the situation that normal exhaust work is affected due to the fact that the returned materials block the exhaust pipe can be prevented; and through a filter element and an activated carbon filter plate in the purification box, pollutants in the waste gas can be fully purified, so that the air quality of the working environment is improved, and the body health of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to anti-returning equipment for twin-screw extruders. Background Art

[0002] After searching, the patent with application number 201721305973.1 discloses a twin-screw extruder, which includes a barrel, an extrusion twin-screw and a heating device. Although this patent has the advantages of high heating efficiency, good thermal stability and more uniform material heating, it still has the following shortcomings:

[0003] First, when the twin-screw extruder is venting, since there is still a lot of raw materials inside the extruder, it is easy for the return material to block the outlet during the venting process, thus affecting the normal venting work;

[0004] Secondly, it is not easy to fully purify the exhaust gas when the twin-screw extruder is exhausting, and the pollutants carried in the exhaust gas will seriously pollute the working environment and be detrimental to the health of the workers. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a material return prevention device for a twin-screw extruder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A material return prevention device for a twin-screw extruder comprises a machine base, a twin-screw extruder body is fixedly mounted on the top outer wall of the machine base, and an exhaust pipe is arranged on the twin-screw extruder body;

[0008] An anti-return type exhaust mechanism is provided in the exhaust pipe, and the anti-return type exhaust mechanism includes a purification box fixedly connected to the upper part of the exhaust pipe, a support frame fixedly connected to the outer wall of the top of the exhaust pipe, a transmission shaft rotatably installed at the center of the support frame, and exhaust fan blades and a discharge auger fixedly mounted on the transmission shaft in sequence from top to bottom.

[0009] Preferably, the anti-return material exhaust mechanism also includes a driving assembly, and the driving assembly includes a driving motor fixedly mounted on the front outer wall of the purification box, an active bevel gear fixedly mounted on the output shaft of the driving motor, and a driven bevel gear fixedly mounted on the top end of the transmission shaft.

[0010] Preferably, the output shaft of the driving motor passes through the front side of the purification box, and the driving bevel gear and the driven bevel gear are meshed with each other.

[0011] Preferably, the exhaust fan blades and the discharge auger are both located in the exhaust pipe.

[0012] Preferably, two insertion channels are provided in the purification box, and filter elements and activated carbon filter plates are sequentially inserted into the two insertion channels from bottom to top.

[0013] Preferably, the side walls of the filter element and the activated carbon filter plate are fixedly connected to the same pull-out iron plate, and the side walls of the purification box are fixedly connected to a permanent magnet bar.

[0014] Preferably, a handle is welded to the side wall of the drawable iron plate, and the drawable iron plate and the permanent magnet bar are attracted to each other.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model drives the active bevel gear to rotate through the driving motor, and then the driven bevel gear meshing with the active bevel gear drives the transmission shaft to rotate, and then the exhaust fan blades on the transmission shaft rotate together with the discharge auger. The rotation of the exhaust fan blades can accelerate the exhaust rate, and the rotation of the discharge auger can effectively discharge the return material in the exhaust pipe, thereby preventing the return material from blocking the exhaust pipe and affecting the normal exhaust work;

[0017] 2. During the exhaust process, the utility model can fully purify the pollutants in the exhaust gas through the filter element and the activated carbon filter plate in the purification box, thereby improving the air quality of the working environment and benefiting the health of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the exhaust pipe area in the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure inside the purification box of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the discharge auger in the exhaust pipe of the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of local parts in the utility model.

[0023] In the figure: 1. Machine base; 2. Twin-screw extruder body; 3. Exhaust pipe; 4. Purification box; 5. Support frame; 6. Transmission shaft; 7. Exhaust fan blades; 8. Discharge auger; 9. Driving motor; 10. Active bevel gear; 11. Driven bevel gear; 12. Insert; 13. Filter element; 14. Activated carbon filter plate; 15. Pull-out iron plate; 16. Permanent magnet bar. DETAILED DESCRIPTION

[0024] 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.

[0025] Example

[0026] Reference Figure 1-5 , a twin-screw extruder anti-return device, comprising a machine base 1, a twin-screw extruder body 2 is fixedly mounted on the top outer wall of the machine base 1;

[0027] In this embodiment, the twin-screw extruder body 2 is provided with an exhaust pipe 3, and an anti-return exhaust mechanism is provided in the exhaust pipe 3. The anti-return exhaust mechanism includes:

[0028] A purification box 4 and a support frame 5, wherein the purification box 4 is fixedly connected to the upper part of the exhaust pipe 3, and the support frame 5 is fixedly connected to the top outer wall of the exhaust pipe 3;

[0029] The transmission shaft 6, the exhaust fan blades 7, and the discharge auger 8 are rotatably mounted at the center of the support frame 5, and the exhaust fan blades 7 and the discharge auger 8 are fixedly mounted on the transmission shaft 6 in sequence from top to bottom;

[0030] The driving assembly includes a driving motor 9 fixedly mounted on the front outer wall of the purification box 4, a driving bevel gear 10 fixedly sleeved on the output shaft of the driving motor 9, and a driven bevel gear 11 fixedly sleeved on the top end of the transmission shaft 6;

[0031] Furthermore, the output shaft of the driving motor 9 passes through the front side of the purification box 4, the driving bevel gear 10 and the driven bevel gear 11 are meshed with each other, and the exhaust fan blades 7 and the discharge auger 8 are both located in the exhaust pipe 3;

[0032] Furthermore, two insertion channels 12 are provided in the purification box 4, and filter elements 13 and activated carbon filter plates 14 are inserted into the two insertion channels 12 in sequence from bottom to top. The side walls of the filter element 13 and the activated carbon filter plate 14 are fixedly connected with the same pull-out iron plate 15, and the side walls of the purification box 4 are fixedly connected with permanent magnet bars 16. A handle is welded to the side walls of the pull-out iron plate 15, and the pull-out iron plate 15 and the permanent magnet bar 16 are attracted to each other. Then, by inserting the filter element 13 and the activated carbon filter plate 14 into the purification box 4 along the two insertion channels 12, and then after being inserted into place, the pull-out iron plate 15 will be attracted to the permanent magnet bar 16 to complete the fixation, which facilitates the installation and subsequent disassembly of the filter element 13 and the activated carbon filter plate 14.

[0033] The working principle of this embodiment is as follows: first, the driving motor 9 drives the active bevel gear 10 to rotate, and then the driven bevel gear 11 meshing with the active bevel gear 10 drives the transmission shaft 6 to rotate, and then the exhaust blades 7 and the discharge auger 8 on the transmission shaft 6 rotate together, and the exhaust rate can be accelerated by the rotation of the exhaust blades 7, and the return material in the exhaust pipe 3 can be effectively discharged by the rotation of the discharge auger 8, thereby preventing the return material from blocking the exhaust pipe 3 and affecting the normal exhaust work;

[0034] Secondly, during the exhaust process, the pollutants in the exhaust gas can be fully purified through the filter element 13 and the activated carbon filter plate 14 in the purification box 4, which is beneficial to improving the air quality of the working environment and the health of the workers.

[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 device for preventing material return of a twin-screw extruder, comprising a machine base (1), a twin-screw extruder body (2) being fixedly mounted on the top outer wall of the machine base (1), and an exhaust pipe (3) being arranged on the twin-screw extruder body (2); It is characterized in that The exhaust pipe (3) is provided with an anti-return type exhaust mechanism, and the anti-return type exhaust mechanism comprises a purification box (4) fixedly connected to the upper part of the exhaust pipe (3), a support frame (5) fixedly connected to the top outer wall of the exhaust pipe (3), a transmission shaft (6) rotatably mounted at the center of the support frame (5), and exhaust fan blades (7) and a discharge auger (8) fixedly mounted on the transmission shaft (6) in sequence from top to bottom.

2. The anti-returning device of a twin-screw extruder according to claim 1, characterized in that: The anti-return material exhaust mechanism also includes a drive assembly, and the drive assembly includes a drive motor (9) fixedly mounted on the front outer wall of the purification box (4), a driving bevel gear (10) fixedly sleeved on the output shaft of the drive motor (9), and a driven bevel gear (11) fixedly sleeved on the top end of the transmission shaft (6).

3. The anti-returning device of a twin-screw extruder according to claim 2, characterized in that: The output shaft of the driving motor (9) passes through the front side of the purification box (4), and the driving bevel gear (10) and the driven bevel gear (11) are meshed with each other.

4. The anti-returning device of a twin-screw extruder according to claim 1, characterized in that: The exhaust fan blades (7) and the discharge auger (8) are both located in the exhaust pipe (3).

5. The anti-returning device of a twin-screw extruder according to claim 1, characterized in that: Two insertion channels (12) are provided in the purification box (4), and filter elements (13) and activated carbon filter plates (14) are sequentially inserted into the two insertion channels (12) from bottom to top.

6. The anti-returning device of a twin-screw extruder according to claim 5, characterized in that: The side walls of the filter element (13) and the activated carbon filter plate (14) are fixedly connected to the same drawable iron plate (15), and the side wall of the purification box (4) is fixedly connected to a permanent magnet bar (16).

7. The anti-returning device of a twin-screw extruder according to claim 6, characterized in that: A handle is welded to the side wall of the drawable iron plate (15), and the drawable iron plate (15) and the permanent magnet bar (16) are attracted to each other.

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