Exhaust device for screw extruder

Abstract

The utility model relates to the technical field of exhaust devices, and discloses an exhaust device for a screw extruder, which comprises an exhaust shell, a plurality of filter screens are fixedly connected to an inner cavity of the exhaust shell, a round through hole is formed in the front surface of the exhaust shell, a motor device is arranged on the front surface of the exhaust shell, and a motor is arranged on the motor device. By arranging the filter screens and the collecting box assembly, material residues in gas can be conveniently intercepted through the multiple filter screens in the exhaust shell, after sweeping, the collecting box body is forcibly pulled downwards, the collecting box body can be conveniently cleaned, the material residues in the gas can be conveniently removed, and the material residues in the gas can be conveniently removed. When the collecting box main body is downward, the springs on the two sides extrude the triangular clamping blocks, the triangular clamping blocks are shrunk under pressure, and after the triangular clamping blocks are shrunk, the springs move out of the triangular grooves of the exhaust shell to take out intercepted material residues, so that resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust devices, and more specifically to an exhaust device for a screw extruder. Background Art

[0002] Screw extruder is a common plastic processing equipment, which is mainly used to heat and melt plastic particles or powders, and extrude the molten plastic into shape through the rotation of the screw. Screw extruder is usually composed of feeding system, heating system, extrusion system and mold. Screw extruder is widely used in the production of plastic products, such as plastic pipes, plates, strips, profiles, films, etc., as well as the production of plastic composite materials. It has the advantages of high production efficiency, wide application range and high degree of automation.

[0003] The exhaust devices for screw extruders currently on the market still have the following shortcomings: 1. The existing exhaust devices for screw extruders will discharge a large amount of material residues during exhaust, and frequent use will not only cause material waste, but also cause the exhaust holes to become clogged; 2. The existing exhaust devices for screw extruders have accumulated material residues in the internal exhaust that are difficult to clean, and the exhaust devices are inconvenient to disassemble, and disassembly and cleaning are extremely inconvenient. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides an exhaust device for a screw extruder to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical solutions: an exhaust device for a screw extruder, comprising an exhaust shell, an inner cavity of the exhaust shell being fixedly connected with a plurality of filter screens, a circular through hole being provided on the front of the exhaust shell, a motor device being provided on the front of the exhaust shell, a cleaning device being provided in the middle of the inner cavity of the exhaust shell, a square through hole being provided in the middle of the bottom of the exhaust shell, triangular grooves being provided on both sides of the square through hole of the exhaust shell, a collecting box assembly being provided in the middle of the bottom of the exhaust shell, a first circular hole being provided in the middle of one side of the exhaust shell, an air inlet pipe being fixedly connected in the first circular hole in the middle of one side of the exhaust shell, a second circular hole being provided in the middle of the other side of the exhaust shell, an exhaust pipe being fixedly connected in the second circular hole in the middle of the other side of the exhaust shell, and the filter screen being convenient for intercepting material residues in the gas.

[0006] Furthermore, the motor device includes a motor housing, a motor body is fixedly connected to the back side of the bottom of the inner cavity of the motor housing, a drive shaft is provided in the middle of the back side of the motor housing, a circular hole is opened in the middle of the back side of the motor housing, the front side of the drive shaft is fixedly connected to the motor body through the circular hole on the back side of the motor housing, a threaded rod is provided on the back side of the drive shaft, and the motor device is powered by a power source.

[0007] Furthermore, the cleaning device includes a double-sided brush, a threaded through hole is opened in the middle of the front side of the double-sided brush, a connecting plate is provided on the top of the double-sided brush, the middle of the bottom of the connecting plate is fixedly connected to the top of the double-sided brush, and side brushes are fixedly connected to both ends of the bottom of the connecting plate, so that the cleaning device facilitates cleaning of the filter.

[0008] Furthermore, the back side of the motor housing is fixedly connected to the exhaust housing, the threaded rod is movably connected to the middle threaded through hole on the front side of the double-sided brush, and the back side of the drive shaft is fixedly connected to the front side of the threaded rod through the circular through hole of the exhaust housing, so that the threaded rod can easily drive the cleaning device to move.

[0009] Furthermore, the collecting box assembly includes a collecting box body, square grooves are provided on both sides of the collecting box body, springs are fixedly connected in the square grooves on both sides of the collecting box body, a triangular clamp block is fixedly connected on one side of each of the springs, and a baffle is fixedly connected in the middle of the inner cavity of the collecting box body, so that the collecting box assembly is convenient for collecting material residues.

[0010] Furthermore, the collecting box body is located in a square through hole in the middle of the bottom of the exhaust shell, and each of the triangular clamping blocks is movably connected to the triangular grooves on both sides of the square through hole of the exhaust shell.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model is provided with a filter screen and a collection box assembly, which is conducive to intercepting material residues in the gas through multiple filter screens in the exhaust shell. After cleaning, the collection box body is pulled downward with force. The downward movement of the collection box body will cause the springs on both sides to squeeze the triangular block, and the triangular block will shrink under pressure. After the triangular block shrinks, the spring will move out of the triangular groove of the exhaust shell to take out the intercepted material residues, thereby avoiding waste of resources.

[0013] 2. The utility model is provided with a cleaning device, which is beneficial for the threaded rod to rotate in the front threaded through hole of the double-sided brush. The rotation of the threaded rod will cause the cleaning device to move slowly, and the double-sided brush and the side brushes at both ends of the bottom of the connecting plate will clean the material residues intercepted by the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 3 It is a schematic cross-sectional view of the exhaust casing structure of the utility model.

[0017] Figure 4 It is a schematic cross-sectional view of the structure of the motor device of the utility model.

[0018] Figure 5 It is a schematic cross-sectional view of the cleaning device structure of the utility model.

[0019] Figure 6 It is a schematic cross-sectional view of the collection box assembly structure of the utility model.

[0020] The accompanying drawings are marked as follows: 1. exhaust casing; 2. filter; 3. motor device; 301. motor casing; 302. motor body; 303. drive shaft; 304. threaded rod; 4. cleaning device; 401. double-sided brush; 402. connecting plate; 403. side brush; 5. collection box assembly; 501. collection box body; 502. spring; 503. triangular block; 504. baffle; 6. intake pipe; 7. exhaust pipe. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The exhaust device for a screw extruder involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] Reference Figure 1-6As shown, the utility model provides an exhaust device for a screw extruder, comprising an exhaust shell 1, a plurality of filter screens 2 are fixedly connected to the inner cavity of the exhaust shell 1, a circular through hole is opened on the front of the exhaust shell 1, a motor device 3 is arranged on the front of the exhaust shell 1, a cleaning device 4 is arranged in the middle of the inner cavity of the exhaust shell 1, a square through hole is opened in the middle of the bottom of the exhaust shell 1, triangular grooves are opened on both sides of the square through hole of the exhaust shell 1, a collecting box assembly 5 is arranged in the middle of the bottom of the exhaust shell 1, a first circular hole is opened in the middle of one side of the exhaust shell 1, an air inlet pipe 6 is fixedly connected in the first circular hole in the middle of one side of the exhaust shell 1, a second circular hole is opened in the middle of the other side of the exhaust shell 1, an exhaust pipe 7 is fixedly connected in the second circular hole in the middle of the other side of the exhaust shell 1, and the filter screen 2 is convenient for intercepting material residues in the gas.

[0023] In a preferred embodiment, the motor device 3 includes a motor housing 301, a motor body 302 is fixedly connected to the back of the bottom of the inner cavity of the motor housing 301, a driving shaft 303 is provided in the middle of the back of the motor housing 301, a circular hole is opened in the middle of the back of the motor housing 301, the front of the driving shaft 303 is fixedly connected to the motor body 302 through the circular hole on the back of the motor housing 301, a threaded rod 304 is provided on the back of the driving shaft 303, and the motor device 3 is powered by a power source.

[0024] In a preferred embodiment, the cleaning device 4 includes a double-sided brush 401, a threaded through hole is opened in the middle of the front side of the double-sided brush 401, a connecting plate 402 is provided on the top of the double-sided brush 401, the middle of the bottom of the connecting plate 402 is fixedly connected to the top of the double-sided brush 401, and side brushes 403 are fixedly connected to both ends of the bottom of the connecting plate 402, so that the cleaning device 4 is convenient for cleaning the filter 2.

[0025] In a preferred embodiment, the back side of the motor housing 301 is fixedly connected to the exhaust housing 1, the threaded rod 304 is movably connected to the middle threaded through hole on the front side of the double-sided brush 401, and the back side of the drive shaft 303 is fixedly connected to the front side of the threaded rod 304 through the circular through hole of the exhaust housing 1, so that the threaded rod 304 can easily drive the cleaning device 4 to move.

[0026] In a preferred embodiment, the collecting box assembly 5 includes a collecting box body 501, square grooves are provided on both sides of the collecting box body 501, springs 502 are fixedly connected in the square grooves on both sides of the collecting box body 501, a triangular clamping block 503 is fixedly connected to one side of each spring 502, and a baffle 504 is fixedly connected in the middle of the inner cavity of the collecting box body 501, so that the collecting box assembly 5 is convenient for collecting material residues.

[0027] In a preferred embodiment, the collecting box body 501 is located in a square through hole in the middle of the bottom of the exhaust housing 1 , and each triangular block 503 is movably connected to triangular grooves on both sides of the square through hole of the exhaust housing 1 .

[0028] The working principle of this utility model:

[0029] First, install the air intake pipe 6 and the screw extruder. When in use, the gas will pass through the air intake pipe 6 into the exhaust housing 1. The exhaust housing 1 has multiple filter screens 2 to intercept material residues in the gas. The gas will pass through the filter screens 2 and be discharged from the exhaust pipe 7. The device is controlled to operate the motor device 3. The motor body 302 in the motor housing 301 will rotate the drive shaft 303. The drive shaft 303 will drive the threaded rod 304 on the back to rotate. The threaded rod 304 will rotate in the front threaded through hole of the double-sided brush 401. The threaded rod 304 The rotation will cause the cleaning device 4 to move slowly, and the double-sided brush 401 and the side brushes 403 at both ends of the bottom of the connecting plate 402 will clean the material residues intercepted by the filter screen 2. After cleaning, the collecting box body 501 will be pulled downward with force, and the downward movement of the collecting box body 501 will cause the springs 502 on both sides to squeeze the triangular block 503, and the triangular block 503 will shrink under pressure. After the triangular block 503 shrinks, the spring 502 will move out of the triangular groove of the exhaust casing 1, and the intercepted material residues will be taken out to avoid waste of resources, and then the collecting box assembly 5 will be installed in place.

Claims

1. An exhaust device for a screw extruder, comprising an exhaust housing (1), characterized in that: The inner cavity of the exhaust shell (1) is fixedly connected to a plurality of filter screens (2); a circular through hole is provided on the front of the exhaust shell (1); a motor device (3) is provided on the front of the exhaust shell (1); a cleaning device (4) is provided in the middle of the inner cavity of the exhaust shell (1); a square through hole is provided in the middle of the bottom of the exhaust shell (1); triangular grooves are provided on both sides of the square through hole of the exhaust shell (1); a collecting box assembly (5) is provided in the middle of the bottom of the exhaust shell (1); a first circular hole is provided in the middle of one side of the exhaust shell (1); an air intake pipe (6) is fixedly connected to the first circular hole in the middle of one side of the exhaust shell (1); a second circular hole is provided in the middle of the other side of the exhaust shell (1); an exhaust pipe (7) is fixedly connected to the second circular hole in the middle of the other side of the exhaust shell (1).

2. An exhaust device for a screw extruder according to claim 1, characterized in that: The motor device (3) comprises a motor housing (301), the bottom back of the inner cavity of the motor housing (301) is fixedly connected to a motor body (302), a driving shaft (303) is provided in the middle of the back of the motor housing (301), a circular hole is provided in the middle of the back of the motor housing (301), the front of the driving shaft (303) is fixedly connected to the motor body (302) through the circular hole on the back of the motor housing (301), and a threaded rod (304) is provided on the back of the driving shaft (303).

3. The exhaust device for a screw extruder according to claim 1, characterized in that: The cleaning device (4) comprises a double-sided brush (401), a threaded through hole is provided in the middle of the front side of the double-sided brush (401), a connecting plate (402) is provided on the top of the double-sided brush (401), the middle of the bottom of the connecting plate (402) is fixedly connected to the top of the double-sided brush (401), and side brushes (403) are fixedly connected to both ends of the bottom of the connecting plate (402).

4. The exhaust device for a screw extruder according to claim 2, characterized in that: The back side of the motor housing (301) is fixedly connected to the exhaust housing (1), the threaded rod (304) is movably connected to the middle threaded through hole on the front side of the double-sided brush (401), and the back side of the drive shaft (303) is fixedly connected to the front side of the threaded rod (304) via the circular through hole of the exhaust housing (1).

5. The exhaust device for a screw extruder according to claim 1, characterized in that: The collection box assembly (5) comprises a collection box body (501), both sides of the collection box body (501) are provided with square grooves, springs (502) are fixedly connected in the square grooves on both sides of the collection box body (501), one side of each spring (502) is fixedly connected with a triangular clamping block (503), and a baffle (504) is fixedly connected in the middle of the inner cavity of the collection box body (501).

6. An exhaust device for a screw extruder according to claim 5, characterized in that: The collecting box body (501) is located in a square through hole in the middle of the bottom of the exhaust shell (1), and each of the triangular clamping blocks (503) is movably connected to triangular grooves on both sides of the square through hole of the exhaust shell (1).

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