A screening and filtration device for powder coating production

Abstract

This utility model relates to the field of powder coating production technology and discloses a screening and filtering device for powder coating production, including a filter tank. A screening inner cylinder is movably mounted inside the filter tank via a slider. A buffer spring, matching the slider, is installed on the inner wall of the filter tank via a buffer sleeve. A feeding assembly is provided at the top of the filter tank, and the feeding assembly has a feeding cylinder. The feeding cylinder is centrally located at the top of the filter tank. A sieve plate is centrally located inside the screening inner cylinder. The feeding assembly can crush and cut the powder coating to be screened. Centrifugal force throws the crushed powder coating out from the distribution pipe, improving feeding uniformity and preventing the powder coating from concentrating in one position. The feeding amount can be controlled to prevent excessive simultaneous feeding from clogging the screen. The powder coating in the conveying pipe can be heated to reduce its moisture content and decrease the probability of moisture clogging.

Description

Technical Field

[0001] This utility model relates to the field of powder coating production technology, specifically a sieving and filtering device for powder coating production. Background Technology

[0002] Powder coatings are solid powdered synthetic resin coatings composed of solid resin, pigments, fillers, and additives. Unlike ordinary solvent-based and water-based coatings, their dispersion medium is not solvent or water, but air. They are characterized by no solvent pollution, 100% film formation, and low energy consumption. In the production of powder coatings, the materials that need to be ground are screened to obtain products that meet the requirements.

[0003] Chinese patent provides a screening device for powder coating production, publication number CN215278502U, which includes a machine body and a feed pipe located on the outside of the machine body. The feed pipe is equipped with a pipe cover, and an observation window is provided on the outside of the machine body. A door panel is hinged to the front of the machine body. A water pump is installed on the top of the machine body, and a water delivery pipe is connected to the bottom of the water pump.

[0004] The above-mentioned device can quickly sieve powder coatings through the cooperation between the components on the machine body. At the same time, it can adsorb, filter and discharge the sieved dust, thereby reducing harm to the human body and the environment. It can also clean the inside of the machine body, thus avoiding clogging and reducing the sieve efficiency. In addition, the water source for cleaning can be recycled.

[0005] However, powder coatings may become too damp during storage, which can cause them to clump together. Clumps of coating can interfere with screening. Furthermore, during powder screening, the material is fed through a side feed pipe, making it difficult to control the feed rate. If a large amount of powder coating is fed in a short period of time, it can easily cause blockage. At the same time, the powder coating tends to concentrate on one side of the screen, resulting in poor feed uniformity, which may affect the screening effect. Utility Model Content

[0006] The purpose of this invention is to provide a screening and filtration device for powder coating production, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A sieving and filtering device for powder coating production includes a filter tank, a sieving inner cylinder is movably mounted inside the filter tank via a slider, a buffer spring adapted to the slider is installed on the inner wall of the filter tank via a buffer sleeve, and a feeding assembly is provided at the top of the filter tank.

[0009] The feeding assembly has a feeding cylinder, which is installed at the top center of the filter tank. A screen plate is installed at the center of the inner cylinder of the screening tank, and a vibrating motor is installed on both sides of the bottom of the screen plate. A material distribution sleeve is rotatably installed at the bottom of the feeding cylinder. Several material distribution pipes are installed at the lower part of the outer ring of the material distribution sleeve. A transmission rod is fixedly installed at the top of the material distribution sleeve. A feeding motor is installed at the top of the feeding cylinder. The drive shaft of the feeding motor passes through the feeding cylinder and is fixedly connected to the top of the transmission rod. A crushing disc is installed at the center of the outer ring of the transmission rod.

[0010] Preferably, a conveying pipe is connected to one side of the rear end of the feed cylinder, a conveying motor is installed at the end of the conveying pipe away from the feed cylinder, and a spiral auger is rotatably installed inside the conveying pipe.

[0011] Preferably, the end of the drive shaft of the conveying motor passes through the conveying pipe and is fixedly connected to the rear end of the spiral auger. Bearings are provided at the connection between the conveying motor and the conveying pipe and at the connection between the feeding motor and the feeding cylinder. The drive shafts of the conveying motor and the feeding motor are rotatably connected to the conveying pipe and the feeding cylinder through the bearings.

[0012] Preferably, a discharge valve pipe is provided at the bottom of the screening inner cylinder, and a guide block that is compatible with the screening inner cylinder is provided at the upper part of the inside of the filter tank.

[0013] Preferably, the top end of the conveying pipe away from the feed cylinder is provided with a feed inlet, and the outer ring of the conveying pipe is provided with a mica electric heating plate, and the outer ring of the mica electric heating plate is provided with a heat insulation sleeve.

[0014] Preferably, an electrical control box is provided on one side of the filter tank at a lower position, and the electrical control box is electrically connected to the conveying motor, the feeding motor, and the mica electric heating plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a combination of a material handling sleeve, a material handling pipe, a crushing disc, and a transmission rod. The transmission rod drives the crushing disc to rotate continuously, which crushes and cuts the powder coating to be screened during feeding, preventing the material from clumping together. Furthermore, the continuous rotation of the material handling sleeve allows the crushed powder coating to be thrown out from the material handling pipe by centrifugal force, improving the uniformity of feeding and preventing the powder coating from concentrating in one position, thus reducing the impact on the screening effect.

[0017] By setting up a feeding motor, a spiral auger, and a feeding cylinder, the powder coating can be pushed into the feeding cylinder by controlling the rotation of the spiral auger. This allows for control of the feeding amount, preventing excessive feeding at the same time from clogging the screen. Furthermore, during feeding, the powder coating in the feeding pipe can be heated by a mica electric heating plate to reduce its moisture content and improve the dryness of the feed, thereby reducing the probability of the powder coating becoming damp and clogging. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a sieving and filtering device for powder coating production according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the screening inner cylinder and the filter tank in the embodiments of this utility model;

[0020] Figure 3 This is a cross-sectional view of the internal structure of the feed cylinder and the bulk material rotating sleeve in the embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the internal structure of the conveying pipe in an embodiment of this utility model.

[0022] In the diagram: 1. Filter tank; 2. Screening inner cylinder; 3. Buffer spring; 4. Vibrating motor; 5. Screen plate; 6. Feeding assembly; 7. Feeding cylinder; 8. Bulk material rotating sleeve; 9. Bulk material pipe; 10. Transmission rod; 11. Crusher disc; 12. Feeding motor; 13. Conveying pipe; 14. Spiral auger; 15. Conveying motor; 16. Mica electric heating plate; 17. Discharge valve pipe; 18. Electrical control box. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Combination Figures 1-4 A sieving and filtering device for powder coating production includes a filter tank 1, a sieving inner cylinder 2 that is movably installed inside the filter tank 1 via a slider, a buffer spring 3 that is adapted to the slider and installed on the inner wall of the filter tank 1 via a buffer sleeve, and a feeding assembly 6 that is provided at the top of the filter tank 1.

[0026] See Figure 2 and Figure 3Furthermore, the feeding assembly 6 has a feeding cylinder 7, which is installed at the top center of the filter tank 1. A screen plate 5 is installed at the center of the inner screening cylinder 2, and a vibration motor 4 is installed on both sides of the bottom of the screen plate 5. A discharge valve pipe 17 is installed at the bottom of the inner screening cylinder 2. A bulk material rotating sleeve 8 is rotatably installed at the bottom of the feeding cylinder 7. Several bulk material pipes 9 are installed at the lower position of the outer ring of the bulk material rotating sleeve 8. A transmission rod 10 is fixedly installed at the top of the bulk material rotating sleeve 8. A feeding motor 12 is installed at the top of the feeding cylinder 7. The drive shaft of the feeding motor 12 passes through the feeding cylinder 7 and is fixedly connected to the top of the transmission rod 10. A crushing disc 11 is installed at the center of the outer ring of the transmission rod 10. A discharge valve pipe 17 is installed at the bottom of the inner screening cylinder 2. A guide block that is compatible with the inner screening cylinder 2 is installed at the upper position inside the filter tank 1.

[0027] Specifically, during feeding, the feed motor 12 is started, which drives the drive shaft to rotate, thereby driving the transmission rod 10 to rotate continuously. This, in turn, drives the crushing cutter disc 11 and the material dispersing sleeve 8 to rotate continuously. By continuously rotating the crushing cutter disc 11 inside the feed cylinder 7, the powder coating falling inside the feed cylinder 7 can be crushed and cut to prevent it from sticking together and improve the feeding effect. The cut material falls to the material dispersing sleeve 8, where it falls towards the material dispersing pipe 9 under the action of gravity. The centrifugal force generated by the continuous rotation of the material dispersing sleeve 8 when the powder material falls can throw the material out from the material dispersing pipe 9, thereby improving the feeding efficiency. At the same time, the material can be dispersed to prevent most of the material from accumulating in one place, thereby improving the uniformity of feeding.

[0028] Example 2

[0029] See Figure 3 and Figure 4 Furthermore, based on Embodiment 1, a conveying pipe 13 is connected to one side of the rear end of the feed cylinder 7. A conveying motor 15 is installed at the end of the conveying pipe 13 away from the feed cylinder 7. A spiral auger 14 is rotatably installed inside the conveying pipe 13. The end of the drive shaft of the conveying motor 15 passes through the conveying pipe 13 and is fixedly connected to the rear end of the spiral auger 14. Bearings are provided at the connection between the conveying motor 15 and the conveying pipe 13, and at the connection between the feed motor 12 and the feed cylinder 7. The drive shafts of the conveying motor 15 and the feeding motor 12 are rotatably connected to the conveying pipe 13 and the feeding cylinder 7 via bearings. The top end of the conveying pipe 13 away from the feeding cylinder 7 is provided with a feed port. The outer ring of the conveying pipe 13 is fitted with a mica electric heating plate 16, and the outer ring of the mica electric heating plate 16 is fitted with a heat insulation sleeve. An electrical control box 18 is provided on one side of the filter tank 1 at a lower position. The electrical control box 18 is electrically connected to the conveying motor 15, the feeding motor 12, and the mica electric heating plate 16.

[0030] Specifically, during feeding, the raw material first enters the feed pipe 13 from the feed inlet at the end of the feed pipe 13 away from the feed cylinder 7. At this time, by starting the feed motor 15, the spiral auger 14 can be driven to rotate, pushing the raw material into the feed cylinder 7. The feeding speed can be adjusted by controlling the rotation speed of the spiral auger 14, and the rotation of the spiral auger 14 can also be stopped to cut off the feeding. In this way, the amount of raw material fed can be controlled to prevent the excessive amount of material from clogging the screen plate 5. During feeding, the powder coating in the feed pipe 13 can be heated and dried by energizing the mica electric heating plate 16 to reduce the probability of the raw material being damp and sticky, thereby improving the feeding effect.

[0031] In actual operation, the steps of the existing technology in which the powder raw material enters the screening inner cylinder 2 and is screened by the vibrating motor 4 and the screen plate 5 are not described here. When feeding, the feeding motor 12 is started so that its drive shaft can rotate, thereby driving the transmission rod 10 to rotate continuously, thereby driving the crushing cutter disc 11 and the bulk material rotating sleeve 8 to rotate continuously. By the continuous rotation of the crushing cutter disc 11 in the feeding cylinder 7, the powder coating falling in the feeding cylinder 7 can be crushed and cut to prevent it from sticking together and improve the feeding effect.

[0032] The cut raw material falls to the material distribution sleeve 8. At this time, the raw material falls towards the material distribution pipe 9 by gravity. When the powder raw material falls, the centrifugal force generated by the continuous rotation of the material distribution sleeve 8 can throw the raw material out from the material distribution pipe 9 to improve the feeding efficiency. At the same time, the raw material can be dispersed to prevent most of the raw material from accumulating in one place, thereby improving the uniformity of feeding.

[0033] During feeding, the raw material will first enter the feed pipe 13 from the feed port at the feed pipe 13 and enter the feed pipe 13 at the end away from the feed cylinder 7. At this time, by starting the feed motor 15, the spiral auger 14 can be driven to rotate to push the raw material into the feed cylinder 7. At this time, the feeding speed can be adjusted by controlling the rotation speed of the spiral auger 14.

[0034] At the same time, the rotation of the spiral auger 14 can be stopped to cut off the material conveying. In this way, the amount of raw material fed can be controlled to prevent the excessive amount of material from clogging the screen plate 5. When feeding, the powder coating in the conveying pipe 13 can be heated and dried by energizing the mica electric heating plate 16 to reduce the probability of the raw material being damp and sticky, and improve the feeding effect.

[0035] Furthermore, the control components and modules used in the aforementioned conveying motor 15, mica electric heating plate 16, and feeding motor 12 are all existing technologies, which can be fully implemented by those skilled in the art. The power supply is also common knowledge in the field and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and programming methods.

[0036] 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 screening and filtering device for powder coating production, comprising a filtering tank (1), the inside of the filtering tank (1) is movably installed with a screening inner cylinder (2) through a sliding block, the inner wall of the filtering tank (1) is installed with a buffer spring (3) adaptively matched with the sliding block through a buffer sleeve, characterized in that: The top of the filter tank (1) is provided with a feeding assembly (6); The feeding assembly (6) has a feeding cylinder (7), which is installed at the top center of the filter tank (1). A screen plate (5) is provided at the center of the inner screen cylinder (2), and a vibration motor (4) is provided at both sides of the bottom of the screen plate (5). A bulk material rotating sleeve (8) is rotatably installed at the bottom of the feeding cylinder (7). Several bulk material pipes (9) are provided at the lower position of the outer ring of the bulk material rotating sleeve (8). A transmission rod (10) is fixedly installed at the top of the bulk material rotating sleeve (8). A feeding motor (12) is installed at the top of the feeding cylinder (7). The drive shaft of the feeding motor (12) passes through the feeding cylinder (7) and is fixedly connected to the top of the transmission rod (10). A crushing disc (11) is provided at the center of the outer ring of the transmission rod (10).

2. The screening and filtering device for powder coating production according to claim 1, characterized in that: The feed cylinder (7) is connected to a conveying pipe (13) at one side of its rear end. A conveying motor (15) is installed at the end of the conveying pipe (13) away from the feed cylinder (7). A spiral auger (14) is rotatably installed inside the conveying pipe (13).

3. The screening and filtering device for powder coating production according to claim 2, characterized in that: The end of the drive shaft of the conveying motor (15) passes through the conveying pipe (13) and is fixedly connected to the rear end of the spiral auger (14). Bearings are provided at the connection between the conveying motor (15) and the conveying pipe (13) and at the connection between the feeding motor (12) and the feeding cylinder (7). The drive shafts of the conveying motor (15) and the feeding motor (12) are rotatably connected to the conveying pipe (13) and the feeding cylinder (7) through the bearings.

4. The screening and filtering device for powder coating production according to claim 1, characterized in that: The bottom end of the screening inner cylinder (2) is provided with a discharge valve pipe (17), and the upper part of the filter tank (1) is provided with a guide block that is compatible with the screening inner cylinder (2).

5. The screening and filtering device for powder coating production according to claim 3, characterized in that: The feed pipe (13) has a feed inlet at the top of the end away from the feed cylinder (7). The outer ring of the feed pipe (13) is fitted with a mica electric heating plate (16), and the outer ring of the mica electric heating plate (16) is fitted with a heat insulation sleeve.

6. The screening and filtering device for powder coating production according to claim 5, characterized in that: An electrical control box (18) is located on one side of the filter tank (1) at a lower position. The electrical control box (18) is electrically connected to the conveying motor (15), the feeding motor (12), and the mica electric heating plate (16).

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