Twin-screw extruder for producing powder coating

Abstract

The utility model relates to the technical field of double-screw extruders, and discloses a double-screw extruder for producing powder coating, which comprises a base, an extruder body is mounted on the top surface of the base, and a filtering mechanism and a crushing mechanism are mounted on the top surface of the extruder body. A filtering mechanism is arranged, and a moving plate and a first supporting block are arranged for bolt mounting, so that a filtering net arranged inside can be quickly taken out, and a filtering device is shaken back and forth through a mounted second damper, so that a powder coating entering the box body is conveniently filtered, and the extruder is conveniently and efficiently used; according to the powder coating crushing device, the crushing mechanism is arranged, and a second motor is arranged to drive a first bevel gear and a second bevel gear to be engaged, so that a first threaded rod and a second threaded rod synchronously rotate, and therefore, the powder coating is better crushed, and further, the coating can be better mixed and is convenient to discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of twin-screw extruders, specifically a twin-screw extruder for producing powder coatings. Background Technology

[0002] Twin-screw extruders were developed based on single-screw extruders. Due to their excellent feeding performance, mixing and plasticizing performance, venting performance, and extrusion stability, they have been widely used in the molding and processing of extruded products.

[0003] Chinese patent disclosure CN221518719U discloses a twin-screw extruder for producing powder coatings. The extruder includes a twin-screw extruder body with a feed hopper at its inlet. A fixed guide rail and a fixed guide plate are fixedly connected to the inner wall of the feed hopper. A movable shaft is movably connected to the inner wall of the feed hopper, and a movable filter box is movably connected to the outer wall of the movable shaft. A support shaft is fixedly connected to the outer wall of the movable filter box, and a spiral spring is fixedly connected to the outer wall of the support shaft. A connecting rod is fixedly connected to the outer wall of the spiral spring. This twin-screw extruder for producing powder coatings achieves a vibrating screening function, effectively filtering the powder coating and preventing powder coating agglomeration that could cause blockages. This improves the stability of the feed and meets the needs of users, making it worthy of widespread application.

[0004] However, it still has the following drawbacks: the screening device cannot be quickly disassembled, making cleaning inconvenient and reducing feeding efficiency. To address this issue, we propose a twin-screw extruder for producing powder coatings. Utility Model Content

[0005] The purpose of this invention is to provide a twin-screw extruder for producing powder coatings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A twin-screw extruder for producing powder coatings includes a base, an extruder body mounted on the top surface of the base, and a filtering mechanism and a crushing mechanism mounted on the top surface of the extruder body.

[0008] The filtration mechanism includes a support component and a filter component, with the support component located on the side of the filter component;

[0009] The support assembly includes an L-shaped plate, the side of which is fixedly installed on the side of the base. A first motor is fixedly installed on the side of the L-shaped plate, and a first gear is fixedly installed on the end face of the output rod of the first motor. Two first helical rods are rotatably arranged on the inner side of the extruder body through bearing seats. The outer surfaces of the two first helical rods respectively penetrate the inner side of the extruder body and extend to the side of the extruder body.

[0010] The filter assembly includes a first U-shaped plate, with a first gear and a second gear fixedly fitted on the outer surfaces of the two first spiral rods respectively. The sides of the first gear and the second gear mesh with each other. The right end face of the first motor output rod is fixedly connected to the left end face of the first threaded rod located at the rear. The bottom surface of the first U-shaped plate is fixedly connected to the top surface of the base. Two first dampers are fixedly installed on the top surface of the first U-shaped plate, and two first support boxes are fixedly installed on the top surface of the first U-shaped plate. By setting two first dampers, effective shock absorption is achieved, thereby avoiding easy shaking when materials are transported.

[0011] A further improvement is that the crushing mechanism includes a second motor, a housing is fixedly installed on the side of the second motor, and a second pipe is provided through the bottom surface of the housing. The outer surface of the second pipe runs from top to bottom through the top surface of the first U-shaped plate and the top surface of the extruder body and extends into the interior of the extruder body. The material is transported through the second pipe.

[0012] A further improvement is that a first through groove is provided on the side of each of the two first support boxes, a first support rod is fixedly installed on the inner wall of each of the two first through grooves, a first slider is slidably provided on the outer surface of each of the two first support rods, the bottom surface of each of the two first sliders is fixedly connected to the top surface of each of the two first dampers, and the side surface of each of the two first sliders is fixedly connected to the side of the box body, thereby assisting in moving the box body by setting the first sliders.

[0013] A further improvement is that the outer surface of the second motor output rod penetrates the side of the housing and extends into the housing. A first bevel gear is fixedly installed on the end face of the second motor output rod. A first horizontal plate is fixedly installed on the inner side of the housing. A first threaded rod is rotatably installed on the bottom surface of the first horizontal plate through a bearing seat. A second bevel gear is fixedly sleeved on the outer surface of the first threaded rod. The side of the first bevel gear meshes with the side of the second bevel gear. By setting the first threaded rod, the incoming material is mixed, thereby facilitating the feeding process.

[0014] A further improvement is that a second threaded rod is fixedly provided on the lower end face of the first threaded rod, the outer surface of the second threaded rod penetrates the top surface of the second pipe and extends into the interior of the second pipe, a plurality of second stirring blades are fixedly sleeved on the outer surface of the second threaded rod, a plurality of first stirring blades are fixedly sleeved on the outer surface of the first threaded rod, and the outer surfaces of the plurality of second stirring blades are respectively in contact with the inner wall of the second pipe.

[0015] A further improvement is that a first ring plate is fixedly installed on the top surface of the housing, a first support block is fixedly installed on the side of the first ring plate, a movable plate is fixedly installed on the top surface of the two first support blocks by bolts, a second damper is fixedly installed on the top surface of the two movable plates, and a T-shaped plate is fixedly installed on the top surface of the two second dampers. By setting detachable movable plates and filter screens, cleaning is facilitated.

[0016] A further improvement is that a U-shaped plate is fixedly installed on the bottom surface of the T-shaped plate, several second support plates are fixedly installed on the inner side of the box, a filter screen is fixedly installed on the bottom surface of the U-shaped plate, the bottom surface of the filter screen is in contact with the top surface of the box, and the top surfaces of the several second support plates are respectively in contact with the bottom surface of the filter screen.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the twin-screw extruder for producing powder coatings, by setting a filtration mechanism and by setting a moving plate and a first support block for bolt installation, can quickly remove the internal filter screen. By installing a second damper, the filter device can be shaken back and forth, which facilitates the filtration of powder coatings entering the box and facilitates the efficient use of the extruder.

[0018] The crushing mechanism, driven by a second motor, engages the first and second bevel gears, causing the first and second threaded rods to rotate synchronously. This allows for better crushing of the powder coating, resulting in better mixing and easier discharge. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the structure of this utility model;

[0020] Figure 2 This is a side sectional view of the structure of this utility model;

[0021] Figure 3 This is a top view of the structure of this utility model;

[0022] Figure 4 This is a front view of the structure of this utility model;

[0023] Figure 5 This is a partial top sectional view of the structure of this utility model.

[0024] In the diagram: 1. Base; 2. Filtering mechanism; 201. L-shaped plate; 202. First motor; 203. First gear; 204. First screw rod; 205. First U-shaped plate; 206. First damper; 207. First support box; 3. Crushing mechanism; 301. Second motor; 302. Box body; 303. First support rod; 304. First threaded rod; 305. Second threaded rod; 306. First ring plate; 307. First support block; 308. Moving plate; 309. Second damper; 310. T-shaped plate; 312. First bevel gear; 300. Second pipe; 311. Filter screen; 4. Extruder body. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 This utility model provides a technical solution: a twin-screw extruder for producing powder coatings, including a base 1, an extruder body 4 mounted on the top surface of the base 1, and a filter mechanism 2 and a crushing mechanism 3 mounted on the top surface of the extruder body 4.

[0027] The filter mechanism 2 includes a support component and a filter component, with the support component located on the side of the filter component;

[0028] The support assembly includes an L-shaped plate 201, the side of the L-shaped plate 201 is fixedly installed on the side of the base 1, a first motor 202 is fixedly installed on the side of the L-shaped plate 201, a first gear 203 is fixedly installed on the end face of the output rod of the first motor 202, and two first screw rods 204 are rotatably arranged on the inner side of the extruder body 4 through bearing seats. The outer surfaces of the two first screw rods 204 respectively penetrate the inner side of the extruder body 4 and extend to the side of the extruder body 4.

[0029] The filter assembly includes a first U-shaped plate 205, two first spiral rods 204 with a first gear and a second gear fixedly mounted on their outer surfaces respectively, the sides of the first gear and the sides of the second gear meshing with each other, the right end face of the output rod of the first motor 202 being fixedly connected to the left end face of the first threaded rod 204 located at the rear, the bottom surface of the first U-shaped plate 205 being fixedly connected to the top surface of the base 1, two first dampers 206 being fixedly installed on the top surface of the first U-shaped plate 205, and two first support boxes 207 being fixedly installed on the top surface of the first U-shaped plate 205.

[0030] The crushing mechanism 3 includes a second motor 301. A housing 302 is fixedly installed on the side of the second motor 301. A second pipe 300 is opened through the bottom surface of the housing 302. The outer surface of the second pipe 300 passes through the top surface of the first U-shaped plate 205 and the top surface of the extruder body 4 from top to bottom and extends into the interior of the extruder body 4.

[0031] Both first support boxes 207 have a through groove on their sides. A first support rod 303 is fixedly installed on the inner wall of each of the two first support grooves. A first slider is slidably installed on the outer surface of each of the two first support rods 303. The bottom surface of each of the two first sliders is fixedly connected to the top surface of each of the two first dampers 206. The sides of each of the two first sliders are fixedly connected to the sides of the housing 302.

[0032] The outer surface of the output rod of the second motor 301 penetrates the side of the housing 302 and extends into the interior of the housing 302. A first bevel gear 312 is fixedly installed on the end face of the output rod of the second motor 301. A first horizontal plate is fixedly installed on the inner side of the housing 302. A first threaded rod 304 is rotatably installed on the bottom surface of the first horizontal plate through a bearing seat. A second bevel gear is fixedly sleeved on the outer surface of the first threaded rod 304. The side of the first bevel gear 312 meshes with the side of the second bevel gear.

[0033] A second threaded rod 305 is fixedly installed on the lower end face of the first threaded rod 304. The outer surface of the second threaded rod 305 penetrates the top surface of the second pipe 300 and extends into the interior of the second pipe 300. A plurality of second stirring blades are fixedly sleeved on the outer surface of the second threaded rod 305. A plurality of first stirring blades are fixedly sleeved on the outer surface of the first threaded rod 304. The outer surfaces of the plurality of second stirring blades are respectively in contact with the inner wall of the second pipe 300.

[0034] A first ring plate 306 is fixedly installed on the top surface of the housing 302. A first support block 307 is fixedly installed on the side of the first ring plate 306. A movable plate 308 is fixedly installed on the top surface of the two first support blocks 307 by bolts. A second damper 309 is fixedly installed on the top surface of the two movable plates 308. A T-shaped plate 310 is fixedly installed on the top surface of the two second dampers 309.

[0035] A U-shaped plate is fixedly installed on the bottom surface of the T-shaped plate 310. Several second support plates are fixedly installed on the inner side of the box 302. A filter screen 311 is fixedly installed on the bottom surface of the U-shaped plate. The bottom surface of the filter screen 311 is in contact with the top surface of the box 302. The top surfaces of the several second support plates are respectively in contact with the bottom surface of the filter screen 311.

[0036] In use, by setting up the filter mechanism 2, the movable plate 308 and the first support block 307 are bolted together, so that the first support block 307 drives the T-shaped plate 310 and the filter screen 311 to vibrate up and down inside the box 302. At the same time, the powder is poured into the box 302. After filtration, the filter screen 311 is supported by the installed second support plate. At the same time, the second motor 301 is started to drive the first bevel gear 312 and the second bevel gear to mesh, so that the second bevel gear drives the first threaded rod 304 and the second threaded rod 305 to rotate, thereby efficiently mixing the powder inside, and then producing it through the extruder body 4.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder for producing powder coatings, comprising a base (1), characterized in that: The base (1) is equipped with an extruder body (4) on its top surface, and the extruder body (4) is equipped with a filter mechanism (2) and a crushing mechanism (3) on its top surface. The filtration mechanism (2) includes a support component and a filter component, with the support component located on the side of the filter component; The support assembly includes an L-shaped plate (201), the side of which is fixedly installed with the side of the base (1), a first motor (202) is fixedly installed on the side of the L-shaped plate (201), a first gear (203) is fixedly installed on the end face of the output rod of the first motor (202), and two first screw rods (204) are rotatably arranged on the inner side of the extruder body (4) through bearing seats. The outer surfaces of the two first screw rods (204) respectively penetrate the inner side of the extruder body (4) and extend to the side of the extruder body (4); The filter assembly includes a first U-shaped plate (205), and a first gear and a second gear are respectively fixedly sleeved on the outer surfaces of the two first spiral rods (204). The sides of the first gear and the sides of the second gear mesh with each other. The right end face of the output rod of the first motor (202) is fixedly connected to the left end face of the first threaded rod (204) located behind. The bottom surface of the first U-shaped plate (205) is fixedly connected to the top surface of the base (1). Two first dampers (206) are fixedly installed on the top surface of the first U-shaped plate (205). Two first support boxes (207) are fixedly installed on the top surface of the first U-shaped plate (205).

2. The twin-screw extruder for producing powder coatings according to claim 1, characterized in that: The crushing mechanism (3) includes a second motor (301), and a housing (302) is fixedly installed on the side of the second motor (301). A second pipe (300) is provided through the bottom surface of the housing (302). The outer surface of the second pipe (300) passes through the top surface of the first U-shaped plate (205) and the top surface of the extruder body (4) from top to bottom and extends into the interior of the extruder body (4).

3. The twin-screw extruder for producing powder coatings according to claim 2, characterized in that: Both of the first support boxes (207) have a through groove on their sides. Both of the first support rods (303) are fixedly installed on the inner walls of the two first support boxes. Both of the first support rods (303) have a sliding block on their outer surface. The bottom surface of both first blocks is fixedly connected to the top surface of both first dampers (206). The sides of both first blocks are fixedly connected to the sides of the box body (302).

4. A twin-screw extruder for producing powder coatings according to claim 3, characterized in that: The outer surface of the output rod of the second motor (301) penetrates the side of the housing (302) and extends into the interior of the housing (302). A first bevel gear (312) is fixedly installed on the end face of the output rod of the second motor (301). A first horizontal plate is fixedly provided on the inner side of the housing (302). A first threaded rod (304) is rotatably provided on the bottom surface of the first horizontal plate through a bearing seat. A second bevel gear is fixedly sleeved on the outer surface of the first threaded rod (304). The side of the first bevel gear (312) meshes with the side of the second bevel gear.

5. A twin-screw extruder for producing powder coatings according to claim 4, characterized in that: A second threaded rod (305) is fixedly provided on the lower end face of the first threaded rod (304). The outer surface of the second threaded rod (305) penetrates the top surface of the second pipe (300) and extends into the interior of the second pipe (300). A plurality of second stirring blades are fixedly sleeved on the outer surface of the second threaded rod (305). A plurality of first stirring blades are fixedly sleeved on the outer surface of the first threaded rod (304). The outer surfaces of the plurality of second stirring blades are respectively in contact with the inner wall of the second pipe (300).

6. A twin-screw extruder for producing powder coatings according to claim 2, characterized in that: A first ring plate (306) is fixedly installed on the top surface of the housing (302). A first support block (307) is fixedly installed on the side of the first ring plate (306). A movable plate (308) is fixedly installed on the top surface of each of the two first support blocks (307) by bolts. A second damper (309) is fixedly installed on the top surface of each of the two movable plates (308). A T-shaped plate (310) is fixedly installed on the top surface of each of the two second dampers (309).

7. A twin-screw extruder for producing powder coatings according to claim 6, characterized in that: A U-shaped plate is fixedly installed on the bottom surface of the T-shaped plate (310), and several second support plates are fixedly installed on the inner side of the box (302). A filter screen (311) is fixedly installed on the bottom surface of the U-shaped plate. The bottom surface of the filter screen (311) is in contact with the top surface of the box (302), and the top surfaces of the several second support plates are respectively in contact with the bottom surface of the filter screen (311).

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