A weatherable powder coating sieving device

Abstract

This utility model relates to a sieving device for weather-resistant powder coatings, belonging to the field of powder sieving technology. It includes a housing with a sieving chamber inside. A feed inlet is located at the top of the housing and communicates with the sieving chamber. A baffle is fixedly installed inside the sieving chamber, forming a flow channel between one side of the baffle and the inner wall of the sieving chamber. An upper screen and an upper partition are installed on the other side of the baffle. The upper screen is positioned above the upper partition and is inclined. The side walls of the upper screen and the upper partition are both in contact with the inner wall of the sieving chamber. A lower screen and a lower partition are installed inside the sieving chamber. The lower screen is located below the baffle, the flow channel, and the upper partition, and is inclined. The lower partition is located below the lower screen. This application has the effect of improving the sieving efficiency of powder coating particles.

Description

Technical Field

[0001] This utility model relates to the field of powder sieving technology, and in particular to a sieving device for weather-resistant powder coatings. Background Technology

[0002] Weather-resistant powder coatings are characterized by their ability to resist changes in the external environment and maintain their color for a long time. In the production process of weather-resistant powder coatings, the powder particles must be further screened after grinding in order to obtain products that meet the requirements.

[0003] Currently, when screening powder coating particles, the powder coating particles are poured into the box through the feed inlet. The screening screen inside the box vibrates, and powder coating particles that meet the particle size requirements pass through the screening screen and enter below the screening screen, while powder coating particles that do not meet the particle size requirements remain above the screening screen, thus achieving the effect of screening powder coating particles.

[0004] During the screening process of powder coating particles, the powder coating particles on the screening screen will be concentrated at the drop point below the feed inlet, which affects the screening efficiency of powder coating particles. Utility Model Content

[0005] To improve the sieving efficiency of powder coating particles, this application provides a sieving device for weather-resistant powder coatings.

[0006] The weather-resistant powder coating screening device provided in this application adopts the following technical solution: A sieving device for weather-resistant powder coatings includes a housing with a sieving chamber inside. A feed inlet is located at the top of the housing and communicates with the sieving chamber. A baffle is fixedly installed inside the sieving chamber, forming a flow channel between one side of the baffle and the inner wall of the sieving chamber. An upper screen and an upper partition are installed on the other side of the baffle. The upper screen is positioned above the upper partition and is inclined. The side walls of the upper screen and the upper partition are both in contact with the inner wall of the sieving chamber. A lower screen and a lower partition are installed inside the sieving chamber. The lower screen is located below the baffle, the flow channel, and the upper partition, and is inclined. The lower partition is located below the lower screen.

[0007] By adopting the above technical solution, after the powder coating particles are poured into the box through the feed inlet, they fall onto the upper screen. The powder coating particles move downward along the inclined upper screen. During the movement of the powder coating particles along the upper screen, some powder particles that meet the particle size requirements pass through the upper screen and fall onto the upper partition plate, while other powder coating particles enter the flow channel along the inclined direction of the upper screen. After passing through the flow channel, the powder coating particles fall onto the lower screen. The powder coating particles move downward along the inclined lower screen. During the movement of the powder coating particles along the lower screen, powder particles that meet the particle size requirements pass through the lower screen and fall onto the lower partition plate, while other powder coating particles remain on the lower screen. Through the inclined upper and lower screens, the powder coating particles are dispersed, reducing the concentration of powder coating particles at the drop point below the feed inlet and improving the screening efficiency of powder coating particles.

[0008] Preferably, the inner wall of the screening chamber includes a screening front wall, a screening rear wall, a screening left wall, a screening right wall, a screening upper wall, and a screening lower wall. The feed inlet is located on the screening upper wall. The screening front wall and the screening rear wall are both in contact with the outer wall of the baffle. A flow channel is formed between the screening right wall and the baffle. The upper screen and the upper partition are located between the screening left wall and the baffle. The screening front wall, screening rear wall, screening left wall, and the outer wall of the baffle are all in contact with the side wall of the upper screen. The screening front wall, screening rear wall, screening left wall, and the outer wall of the baffle are all in contact with the side wall of the upper partition. The screening front wall, screening rear wall, screening left wall, and screening right wall are all in contact with the side wall of the lower screen. The screening front wall, screening rear wall, screening left wall, and screening right wall are all in contact with the side wall of the lower partition.

[0009] By adopting the above technical solution, powder particles that pass through the upper screen are separated from powder particles that do not pass through the upper screen by the upper partition and baffle, and powder particles that pass through the lower screen are separated from powder particles that do not pass through the lower screen by the lower partition.

[0010] Preferably, an upper sieve cavity is formed between the upper sieve and the upper sieve wall, and a lower sieve cavity is formed between the lower sieve and the upper partition. Both the upper and lower sieve cavities are connected to the flow channel. An upper chamber is formed between the upper sieve, the upper partition, and the baffle, and a lower chamber is formed between the lower sieve and the lower partition.

[0011] By adopting the above technical solution, the upper and lower sieve chambers are used to store powder particles that do not meet the particle size requirements, and the upper and lower chambers are used to store powder particles that do not meet the particle size requirements.

[0012] Preferably, a waste pipe is connected to the lower screen chamber and penetrates the left wall of the screen. Discharge pipes are connected to both the upper and lower chambers and penetrate the front wall of the screen.

[0013] By adopting the above technical solution, powder particles that meet the particle size requirements are discharged from the box through the discharge pipe, while powder particles that do not meet the particle size requirements are discharged from the box through the waste pipe.

[0014] Preferably, the end of the upper screen near the left wall of the sieve is located diagonally above the end of the upper screen near the right wall of the sieve, the end of the upper partition near the rear wall of the sieve is located diagonally above the end of the upper partition near the front wall of the sieve, the end of the lower screen near the right wall of the sieve is located diagonally above the end of the lower screen near the left wall of the sieve, and the end of the lower partition near the rear wall of the sieve is located diagonally above the end of the lower partition near the front wall of the sieve.

[0015] By adopting the above technical solution, it is convenient for powder coating particles on the upper screen to enter the flow channel, for powder coating particles on the lower screen to enter the waste pipe, and for powder coating particles on the upper and lower baffles to enter the discharge pipe.

[0016] Preferably, an upper vibration groove is formed on both the front and rear walls of the screening. An upper vibration block is slidably arranged in the upper vibration groove. The opposite face of the upper vibration block is fixedly connected to the upper screen. Several upper vibration rods are arranged through the upper vibration block. The end wall of the upper vibration rod is fixedly connected to the inner wall of the upper vibration groove. An upper spring is sleeved on the upper vibration rod. The upper spring is abutted between the outer wall of the upper vibration block and the inner wall of the upper vibration groove. Several upper vibrators are fixedly arranged in the upper vibration groove. The upper vibrators are used to drive the upper vibration block to move.

[0017] By adopting the above technical solution, the upper vibrator starts and drives the upper vibrating block to move up and down along the height direction. At the same time, the upper spring applies elastic force to the upper vibrating block, thereby achieving the effect of the upper vibrating block driving the upper screen to vibrate.

[0018] Preferably, both the front and rear walls of the screening section are provided with lower vibration grooves. Lower vibration blocks are slidably arranged in the lower vibration grooves. The opposite surfaces of the lower vibration blocks are fixedly connected to the lower screen. Several lower vibration rods are arranged through the lower vibration blocks. The end walls of the lower vibration rods are fixedly connected to the inner walls of the lower vibration grooves. Lower springs are sleeved on the lower vibration rods. The lower springs are abutted between the outer walls of the lower vibration blocks and the inner walls of the lower vibration grooves. Several lower vibrators are fixedly arranged in the lower vibration grooves. The lower vibrators are used to drive the lower vibration blocks to move.

[0019] By adopting the above technical solution, the lower vibrator is activated to drive the lower vibrating block to move up and down along the height direction. At the same time, the lower spring applies elastic force to the lower vibrating block, thereby achieving the effect of the lower vibrating block driving the lower screen to vibrate.

[0020] Preferably, a plurality of rotating shafts are provided in the flow channel, the top end of the rotating shafts is rotatably connected to the upper wall of the screen, and a plurality of rotating rods are fixedly provided on the side wall of the rotating shafts, the rotating rods being located in the flow channel.

[0021] By adopting the above technical solution, the rotating shaft is driven to rotate, and the rotating shaft drives the rotating rod to rotate, which loosens the powder coating particles in the flow channel and reduces the blockage of powder coating particles in the flow channel.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a box, screening chamber, feed inlet, baffle, flow channel, upper screen, upper partition, lower screen and lower partition, and by using the inclined upper and lower screens, the powder coating particles are dispersed and distributed, reducing the concentration of powder coating particles at the material drop point below the feed inlet, and improving the screening efficiency of powder coating particles. 2. The vibration effect of the upper screen is achieved by setting up an upper vibration groove, upper vibration block, upper vibration rod, upper spring and upper vibrator; 3. The vibration effect of the lower screen is achieved by setting a lower vibration groove, a lower vibration block, a lower vibration rod, a lower spring, and a lower vibrator; 4. By setting up a rotating shaft and rotating rod, the blockage of powder coating particles in the flow channel is reduced. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a weather-resistant powder coating sieving device in an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view illustrating the positional relationship between the baffle and the box in the embodiments of this application.

[0025] Figure 3 This is a cross-sectional view showing the positional relationship between the upper partition and the box body in the embodiments of this application.

[0026] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0027] Figure 5 yes Figure 3 Enlarged view of section B.

[0028] Figure 6 This is a cross-sectional view illustrating the positional relationship between the lower partition and the box body in the embodiments of this application.

[0029] Figure 7 yes Figure 6 Enlarged view of section C.

[0030] Figure 8 yes Figure 6 Enlarged view of section D.

[0031] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Feed inlet; 12. Waste pipe; 13. Discharge pipe; 2. Screening chamber; 21. Front wall of screening; 22. Rear wall of screening; 23. Left wall of screening; 24. Right wall of screening; 25. Upper wall of screening; 26. Lower wall of screening; 3. Baffle; 31. Flow channel; 32. Rotating rod; 33. Rotating shaft; 4. Upper screen; 41. Upper screen chamber; 5. Upper partition; 51. Upper chamber; 6. Lower screen; 61. Lower screen chamber; 7. Lower partition; 71. Lower chamber; 8. Upper vibrator; 81. Upper vibrating groove; 82. Upper vibrating block; 83. Upper vibrating rod; 84. Upper spring; 9. Lower vibrator; 91. Lower vibrating groove; 92. Lower vibrating block; 93. Lower vibrating rod; 94. Lower spring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0033] This application discloses a sieving device for weather-resistant powder coatings. (Refer to...) Figures 1 to 3The system includes a housing 1, within which a screening chamber 2 is provided. The inner walls of the screening chamber 2 include a front screening wall 21, a rear screening wall 22, a left screening wall 23, a right screening wall 24, an upper screening wall 25, and a lower screening wall 26. A feed inlet 11 is provided on the upper screening wall 25, penetrating the top wall of the housing 1. A baffle 3 is welded inside the screening chamber 2. The front screening wall 21 and the rear screening wall 22 are both in close contact with the outer walls of the baffle 3, and a flow channel 31 is formed between the right screening wall 24 and the baffle 3. An inclined upper screen 4 and an upper partition 5 are installed between the baffle 3 and the left screening wall 23, with the upper screen 4 located above the upper partition 5. The screening front wall 21, screening rear wall 22, screening left wall 23, and the outer wall of the baffle 3 are all in contact with the side wall of the upper screen 4. The upper screen 4 and the screening upper wall 25 form an upper screening cavity 41, which is connected to the flow channel 31. The screening front wall 21, screening rear wall 22, screening left wall 23, and the outer wall of the baffle 3 are all in contact with the side wall of the upper partition 5. The upper screen 4, the upper partition 5, and the baffle 3 form an upper chamber 51. An inclined lower screen 6 and a lower partition 7 are installed in the screening cavity 2. The lower screen 6 is located below the baffle 3, the flow channel 31, and the upper partition 5, and the lower partition 7 is located below the lower screen 6. The screening front wall 21, screening rear wall 22, screening left wall 23, and screening right wall 24 are all in contact with the side wall of the lower screen 6, forming a lower screen cavity 61 between the lower screen 6 and the upper partition 5, which is connected to the flow channel 31. The screening front wall 21, screening rear wall 22, screening left wall 23, and screening right wall 24 are all in contact with the side wall of the lower partition 7, forming a lower chamber 71 between the lower screen 6 and the lower partition 7. The upper screen cavity 41 and lower screen cavity 61 are used to store powder particles that do not meet the particle size requirements, and the upper chamber 51 and lower chamber 71 are also used to store powder particles that do not meet the particle size requirements. Powder coating particles are poured into the box 1 through the feed inlet 11 and fall onto the upper screen 4, moving downwards along the inclined upper screen 4. As the powder coating particles move along the upper screen 4, some particles that meet the particle size requirements pass through the upper screen 4 and fall onto the upper baffle 5, while other powder coating particles enter the flow channel 31 along the inclined direction of the upper screen 4. After passing through the flow channel 31, the powder coating particles fall onto the lower screen 6 and move downwards along the inclined lower screen 6. During the movement of the powder coating particles along the lower screen 6, particles that meet the particle size requirements pass through the lower screen 6 and fall onto the lower baffle 7, while other powder coating particles remain on the lower screen 6. The inclined upper screen 4 and lower screen 6 disperse the powder coating particles, reducing the concentration of powder coating particles at the drop point below the feed inlet 11 and improving the screening efficiency of the powder coating particles.

[0034] Reference Figures 1 to 6The upper screen 4, near the left wall 23, is positioned diagonally above the end of the upper screen 4 near the right wall 24, facilitating the entry of powder coating particles from the upper screen 4 into the flow channel 31. A waste pipe 12 is connected to the lower screen chamber 61, penetrating the left wall 23, through which powder particles that do not meet the particle size requirements are discharged from the housing 1. The lower screen 6, near the right wall 24, is positioned diagonally above the end of the lower screen 6 near the left wall 23, facilitating the entry of powder coating particles from the lower screen 6 into the waste pipe 12. Both the upper chamber 51 and the lower chamber 71 are connected to discharge pipes 13, which penetrate the front wall 21 of the screen, allowing powder particles that meet the particle size requirements to be discharged from the housing 1. The upper partition 5 is located at the end near the rear wall 22 of the sieve, which is diagonally above the end near the front wall 21 of the sieve. The lower partition 7 is located at the end near the rear wall 22 of the sieve, which is diagonally above the end near the front wall 21 of the sieve. This facilitates the entry of powder coating particles from the upper partition 5 and the lower partition 7 into the discharge pipe 13.

[0035] In order to make the upper screen 4 vibrate, refer to Figures 3 to 8 Both the upper screening front wall 21 and the upper screening rear wall 22 have upper vibration grooves 81. Upper vibration blocks 82 are slidably disposed within the upper vibration grooves 81, and their opposite faces are fixedly connected to the upper screen 4. Several upper vibration rods 83 are threaded through the upper vibration blocks 82, and the end walls of the upper vibration rods 83 are welded to the inner wall of the upper vibration groove 81. Upper springs 84 are fitted onto the upper vibration rods 83, and these springs 84 abut against the outer wall of the upper vibration block 82 and the inner wall of the upper vibration groove 81. Several upper vibrators 8 are installed within the upper vibration grooves 81. When the vibrators are activated, they drive the upper vibration blocks 82 to move up and down along the height direction. Simultaneously, the upper springs 84 apply a spring force to the upper vibration blocks 82, thereby achieving the effect of the upper vibration blocks 82 driving the upper screen 4 to vibrate.

[0036] In order to make the lower screen 6 vibrate, refer to Figures 3 to 8 Both the front wall 21 and the rear wall 22 of the screening system have lower vibration grooves 91. Lower vibration blocks 92 are slidably disposed within the lower vibration grooves 91, and their opposite faces are fixedly connected to the lower screen 6. Several lower vibration rods 93 are threaded through the lower vibration blocks 92, and the end walls of the lower vibration rods 93 are welded to the inner wall of the lower vibration groove 91. Lower springs 94 are fitted onto the lower vibration rods 93, and these springs 94 abut against the outer wall of the lower vibration block 92 and the inner wall of the lower vibration groove 91. Several lower vibrators 9 are installed within the lower vibration grooves 91. When the lower vibrators 9 are activated, they drive the lower vibration blocks 92 to move up and down along the height direction. Simultaneously, the lower springs 94 apply a spring force to the lower vibration blocks 92, thereby achieving the effect of the lower vibration blocks 92 driving the lower screen 6 to vibrate.

[0037] To reduce congestion within circulation channel 31, refer to Figure 1Several rotating shafts 33 are installed inside the flow channel 31, with the top ends of the rotating shafts 33 rotatably connected to the upper wall 25 of the sieve. Several rotating rods 32 are installed on the side walls of the rotating shafts 33, and the rotating rods 32 are located inside the flow channel 31. When the motor drives the rotating shafts 33 to rotate, the rotating shafts 33 drive the rotating rods 32 to rotate, causing the rotating rods 32 to loosen the powder coating particles inside the flow channel 31, reducing the possibility of powder coating particles clogging the flow channel 31.

[0038] The implementation principle of the weather-resistant powder coating sieving device in this application embodiment is as follows: Powder coating particles are poured into the box 1 through the feed inlet 11 and fall onto the upper screen 4. The powder coating particles move downward along the inclined upper screen 4. During the movement of the powder coating particles along the upper screen 4, some powder particles that meet the particle size requirements pass through the upper screen 4 and fall onto the upper partition 5, while other powder coating particles enter the flow channel 31 along the inclined direction of the upper screen 4. After passing through the flow channel 31, the powder coating particles fall onto the lower screen 6 and move downward along the inclined lower screen 6. During the movement of the powder coating particles along the lower screen 6, powder particles that meet the particle size requirements pass through the lower screen 6 and fall onto the lower partition 7, while other powder coating particles remain on the lower screen 6. By using the inclined upper screen 4 and lower screen 6, the powder coating particles are dispersed, reducing the concentration of powder coating particles at the drop point below the feed inlet 11 and improving the sieving efficiency of the powder coating particles.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sieving device for weather-resistant powder coatings, comprising a housing, a sieving chamber disposed within the housing, and a feed inlet at the top of the housing, the feed inlet being in communication with the sieving chamber, characterized in that: A baffle is fixedly installed inside the screening chamber. A flow channel is formed between one side of the baffle and the inner wall of the screening chamber. An upper screen and an upper partition are installed on the other side of the baffle. The upper screen is located above the upper partition and is inclined. The side walls of the upper screen and the upper partition are both in contact with the inner wall of the screening chamber. A lower screen and a lower partition are installed inside the screening chamber. The lower screen is located below the baffle, the flow channel, and the upper partition. The lower screen is inclined, and the lower partition is located below the lower screen. The inner wall of the screening chamber includes a screening front wall, a screening rear wall, a screening left wall, a screening right wall, a screening upper wall, and a screening lower wall. The feed inlet is located on the screening upper wall. The screening front wall and the screening rear wall are both in contact with the outer wall of the baffle. A flow channel is formed between the screening right wall and the baffle. The upper screen and the upper partition are located between the screening left wall and the baffle. The screening front wall, screening rear wall, screening left wall, and the outer wall of the baffle are all in contact with the side wall of the upper screen. The screening front wall, screening rear wall, screening left wall, and the outer wall of the baffle are all in contact with the side wall of the upper partition. The screening front wall, screening rear wall, screening left wall, and screening right wall are all in contact with the side wall of the lower screen. The screening front wall, screening rear wall, screening left wall, and screening right wall are all in contact with the side wall of the lower partition.

2. The weather-resistant powder coating sieving device according to claim 1, characterized in that: An upper sieve cavity is formed between the upper sieve and the upper sieve wall, and a lower sieve cavity is formed between the lower sieve and the upper partition. Both the upper and lower sieve cavities are connected to the flow channel. An upper chamber is formed between the upper sieve, the upper partition, and the baffle, and a lower chamber is formed between the lower sieve and the lower partition.

3. The weather-resistant powder coating sieving device according to claim 2, characterized in that: A waste pipe is connected to the lower screen chamber and penetrates the left wall of the screen. Both the upper and lower chambers are connected to discharge pipes, which penetrate the front wall of the screen.

4. The weather-resistant powder coating sieving device according to claim 3, characterized in that: The end of the upper screen near the left wall of the sieve is located diagonally above the end of the upper screen near the right wall of the sieve. The end of the upper partition near the rear wall of the sieve is located diagonally above the end of the upper partition near the front wall of the sieve. The end of the lower screen near the right wall of the sieve is located diagonally above the end of the lower screen near the left wall of the sieve. The end of the lower partition near the rear wall of the sieve is located diagonally above the end of the lower partition near the front wall of the sieve.

5. A sieving device for weather-resistant powder coatings according to claim 1, characterized in that: Both the front and rear walls of the screening screen are provided with upper vibration grooves. Upper vibration blocks are slidably arranged in the upper vibration grooves. The opposite surfaces of the upper vibration blocks are fixedly connected to the upper screen. Several upper vibration rods are arranged through the upper vibration blocks. The end walls of the upper vibration rods are fixedly connected to the inner walls of the upper vibration grooves. Upper springs are sleeved on the upper vibration rods. The upper springs are abutted between the outer walls of the upper vibration blocks and the inner walls of the upper vibration grooves. Several upper vibrators are fixedly arranged in the upper vibration grooves. The upper vibrators are used to drive the upper vibration blocks to move.

6. The weather-resistant powder coating sieving device according to claim 1, characterized in that: Both the front and rear walls of the screening screen have lower vibration grooves. Lower vibration blocks are slidably arranged in the lower vibration grooves. The opposite surfaces of the lower vibration blocks are fixedly connected to the lower screen. Several lower vibration rods are arranged through the lower vibration blocks. The end walls of the lower vibration rods are fixedly connected to the inner walls of the lower vibration grooves. Lower springs are sleeved on the lower vibration rods. The lower springs are abutted between the outer walls of the lower vibration blocks and the inner walls of the lower vibration grooves. Several lower vibrators are fixedly arranged in the lower vibration grooves. The lower vibrators are used to drive the lower vibration blocks to move.

7. The weather-resistant powder coating sieving device according to claim 1, characterized in that: Several rotating shafts are provided in the flow channel. The top of each rotating shaft is rotatably connected to the upper wall of the screen. Several rotating rods are fixedly provided on the side wall of the rotating shafts, and the rotating rods are located in the flow channel.

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