Equipment and process for refining environmentally friendly epoxy zinc-rich anti-corrosion powder coating

Abstract

This invention proposes a refining device and process for environmentally friendly epoxy zinc-rich anti-corrosion powder coatings, belonging to the technical field of environmentally friendly epoxy zinc-rich anti-corrosion powder coating processing. The refining device includes multiple rotating cylinders arranged sequentially along the axial direction. A gap is provided between adjacent rotating cylinders, and a connecting seat is provided within the gap. The rotating cylinders are rotatably connected to the connecting seats. A ring of first liner plates is evenly spaced within the rotating cylinders. A liner groove is formed between adjacent first liner plates, and a second liner plate is provided within the liner groove. An arc-shaped screen plate is provided within the rotating cylinder, and a pusher plate capable of reciprocating between its two axial ends is provided within the liner groove. This invention has the advantages of high refining efficiency and real-time material discharge.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly epoxy zinc-rich anti-corrosion powder coating processing technology, specifically to a refining equipment and process for environmentally friendly epoxy zinc-rich anti-corrosion powder coating. Background Technology

[0002] Powder coating is a new type of solvent-free 100% solid powder coating. It has the characteristics of being solvent-free, pollution-free, recyclable, environmentally friendly, energy and resource saving, reducing labor intensity and high mechanical strength of the coating film. Improving the performance of powder coating by adding different additives is currently a better way to improve the performance of powder coating. Epoxy zinc-rich powder coating is a heavy-duty anti-corrosion coating with excellent corrosion resistance and is currently the most widely used type of coating for pipeline anti-corrosion.

[0003] The production process of environmentally friendly epoxy zinc-rich anti-corrosion powder coatings generally includes the following steps:

[0004] Step 1: Raw Material Preparation: Prepare raw materials such as epoxy resin, zinc powder, curing agent, and additives. Simultaneously, screen and pre-treat the raw materials according to the requirements of the coating formulation.

[0005] Step 2: Mixing and blending: Add epoxy resin, zinc powder, curing agent and additives to the mixing equipment in a certain proportion, and stir and mix thoroughly to ensure that the various raw materials are evenly dispersed.

[0006] Step 3: Grinding and crushing: Grind the mixed paint raw materials by ball milling or drum milling with a high-speed grinder to refine the particles and improve the uniformity of the paint.

[0007] Step 4, Spray Drying: The ground paint raw material is spray dried using a spray drying and explosion equipment. The moist paint particles are sprayed into hot air, causing them to quickly dry and explode into powder.

[0008] Step 5: Screening and grading: The dried paint powder is screened and graded according to the requirements of different particle sizes, and the powder that meets the requirements is selected for packaging.

[0009] Step Six: Packaging and Storage: Package the graded paint powder, label and inspect it, and store it in a suitable environment to ensure the quality and shelf life of the paint.

[0010] In step three, the commonly used ball mill grinder mixes the grinding balls and raw materials uniformly inside the mill for indiscriminate grinding. A certain grinding time is required before discharge. During this process, a large amount of raw material that has reached the required fineness standard remains in the mill chamber, mixed with raw material that has not yet reached the standard. This affects the contact effect between the raw material that has not reached the fineness standard and the grinding balls. Furthermore, it hinders and buffers the impact of the grinding balls on the raw material that has not reached the fineness standard, thus affecting the fineness efficiency of the raw material. Therefore, the fineness process of environmentally friendly epoxy zinc-rich anti-corrosion powder coating urgently needs improvement. Summary of the Invention

[0011] To address the aforementioned technical problems, this invention proposes a refining device and process for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating.

[0012] The technical solution of this invention is implemented as follows:

[0013] The first aspect of this invention provides a refining device for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating, comprising a plurality of rotating cylinders arranged sequentially along an axial direction, with a gap between adjacent rotating cylinders, a connecting seat disposed within the gap, and the rotating cylinders rotatably connected to the connecting seats. A ring of first liner plates is evenly spaced within each rotating cylinder, a liner groove is formed between adjacent first liner plates, and a second liner plate is disposed within the liner groove. An arc-shaped sieve plate is disposed within the rotating cylinder, located in the third quadrant of the inner cavity of the rotating cylinder. The outer surface of the arc-shaped sieve plate... The surface slides in fit with the inner end of the first liner. A discharge channel is provided between two adjacent rotating cylinders, and the discharge channel is located within the circumference of the arc-shaped screen plate in the circumferential direction. A pusher plate is provided in the liner groove, which can move back and forth between its two ends in the axial direction. The outer side of the pusher plate is located on the same circumferential surface as the inner surface of the first liner. The top end of the pusher plate is connected to the outer surface of the arc-shaped screen plate. When the pusher plate passes the arc-shaped screen plate, it moves back and forth along the axial direction of the liner groove, pushing the refined powder coating that falls into the liner groove into the discharge channel.

[0014] Furthermore, the discharge channel includes a discharge trough and a discharge port. The inner diameter of the connecting seat is larger than the inner diameter of the rotating cylinder and smaller than the outer diameter of the rotating cylinder, so that the discharge trough is formed between the inner surface of the connecting seat and the outer surface of the arc-shaped screen plate. The discharge port is disposed on the connecting seat and is in a downward orientation.

[0015] Furthermore, when the liner groove is located outside the arc-shaped screen plate, the pusher plate inside the liner groove is located at the upstream end of the liner groove, and a lower baffle ring is provided at the downstream end of the arc-shaped screen plate, and the lower baffle ring blocks the downstream end of the liner groove located outside the arc-shaped screen plate. An upper baffle ring with an inverted "L" shaped cross-section is provided at the upstream end of the arc-shaped screen plate, and the pusher plate located inside the upstream end of the liner groove is housed in the upper baffle ring. The upper baffle ring, the arc-shaped screen plate, and the lower baffle ring are fixedly connected, and the outer surfaces of the upper baffle ring and the lower baffle ring are fixedly connected to the inner surface of the connecting seat.

[0016] Furthermore, the downstream end of the first liner is flush with the downstream end of the second liner, and the upstream end of the first liner extends upstream from the upstream end of the second liner into the interior of the upper retaining ring, and the length difference between the first liner and the second liner is equal to the thickness of the pusher plate.

[0017] Furthermore, both ends of the pusher plate are provided with sliding grooves, and sliding strips are fixedly installed on the opposite surfaces of two adjacent second liners, with the sliding grooves fitted onto the sliding strips. A guide ball is fixedly installed in the middle of the inner surface of the pusher plate, and a guide groove is provided between the arc-shaped screen plate and the upper retaining ring. The guide ball is rolled in the guide groove. The guide groove includes a spiral section and an annular section. The spiral section is fixed on the outer surface of the arc-shaped screen plate, and the annular section is fixed on the upper retaining ring.

[0018] Furthermore, the opposite sides of two adjacent first liner plates are parallel, the second liner plate includes a fixed plate and a movable plate, a storage spring is provided between the fixed plate and the movable plate, and a plate control structure is connected to the outer side of the movable plate, wherein:

[0019] When the grinding ball moves to its highest position following the second liner, the plate control structure releases the energy storage spring, causing the movable plate to spring inward; when the second liner passes the top of the rotating cylinder, the plate control structure causes the movable plate to reset outward and the energy storage spring to compress again.

[0020] Furthermore, an externally threaded sleeve is fixedly installed on the outer surface of the fixed plate. The outer end of the externally threaded sleeve penetrates the rotating cylinder from the inside out. A fixing nut is connected to the external thread of the externally threaded sleeve. The plate control structure includes a slide rod, a pulley, and a slide rail. The slide rod passes through the externally threaded sleeve. The inner end of the slide rod is fixedly connected to the movable plate. The pulley is installed on the outer end of the slide rod. The slide rail is fixedly installed on the connecting seat. The slide rail has a notch corresponding to the release position of the stored spring. The pulley moves on the slide rail to compress the stored spring. The pulley enters the notch and disengages from the slide rail to release the stored spring. The pulley slides back onto the slide rail after passing through the notch to recompress the stored spring.

[0021] Furthermore, the two sides of the fixed plate and the movable plate respectively contact the opposite side of the first liner on both sides, and when the movable plate is ejected inward, its two axial sides respectively contact the opposite surfaces of the lower retaining ring and the pusher plate. The movable plate has a groove with its outer surface recessed inward. When the storage spring is in a compressed state, the groove opening contacts the inner surface of the fixed plate.

[0022] Furthermore, a discharge hopper is provided below the rotating cylinder, and a spiral feeder is provided at the bottom end of the discharge hopper. The discharge hopper is fixedly installed on the connecting seat, and a drive shaft is rotatably installed on the connecting seat. A drive gear ring is fixedly installed on the outside of the rotating cylinder, and a drive gear meshes with the outer side of the drive gear ring. The drive gear is fixedly installed on the drive shaft, and a power device is connected to the drive shaft. The connecting seat and the spiral feeder are both installed on the frame. End caps are provided on the outer surfaces of the rotating cylinder at both ends, and a spiral feeder is connected to the first end cap located upstream. The spiral feeder and the end cap are both fixedly installed on the frame. The upper and lower retaining rings located upstream and downstream are respectively fixedly connected to the inner wall surfaces of the two end caps.

[0023] A second aspect of the present invention provides a refining process for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating, which uses the refining equipment for the environmentally friendly epoxy zinc-rich anti-corrosion powder coating described in any of the above claims to refine the raw materials of the environmentally friendly epoxy zinc-rich anti-corrosion powder coating.

[0024] The present invention has the following beneficial effects:

[0025] During the refining and grinding process, an arc-shaped sieve plate is used to screen the raw materials inside the rotating cylinder, allowing the raw materials that have reached the refining standard to pass through the arc-shaped sieve plate and be discharged in real time by the pusher plate. This reduces the resistance of the refining standard raw materials to the refining and grinding of the raw materials that have not reached the refining standard, improves the refining efficiency of the raw materials, greatly optimizes the refining process of environmentally friendly epoxy zinc-rich anti-corrosion powder coatings, and reduces production costs. Attached Figure Description

[0026] Figure 1 This is an overall schematic diagram of the present invention;

[0027] Figure 2 This is the present invention. Figure 1 Enlarged view of part A in the image;

[0028] Figure 3 This is the present invention. Figure 2 Enlarged view of part B in the image;

[0029] Figure 4 This is an overall schematic diagram of the rotating cylinder of the present invention;

[0030] Figure 5 This is the present invention. Figure 4 Enlarged view of section C in the image;

[0031] Figure 6 This is a schematic diagram of a single rotating cylinder of the present invention;

[0032] Figure 7 This is the present invention. Figure 6 Another perspective view;

[0033] Figure 8 This is an overall schematic diagram of the first and second liner plates of the present invention;

[0034] Figure 9 This is the present invention. Figure 8 Enlarged view of part D in the image;

[0035] Figure 10 This is a schematic diagram of the guide groove of the present invention.

[0036] In the diagram: 1. Rotating cylinder; 2. Connecting seat; 3. First liner plate; 4. Liner groove; 5. Second liner plate; 5-1. Fixed plate; 5-2. Movable plate; 5-3. Storage spring; 5-4. Groove; 6. Arc-shaped screen plate; 7. Discharge channel; 7-1. Discharge trough; 7-2. Discharge port; 8. Push plate; 9. Lower retaining ring; 10. Upper retaining ring; 11. Slide groove; 12. Slide bar; 13. Guide ball; 14. Guide groove; 14-1. Spiral section; 14-2. Annular section; 15. External threaded sleeve; 16. Fixed nut; 17. Slide rod; 18. Pulley; 19. Slide rail; 20. Discharge hopper; 21. Spiral feeder; 22. Drive shaft; 23. Drive gear ring; 24. Drive gear; 25. Frame; 26. End cover; 27. Spiral feeder. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figures 1 to 10 As shown, the present invention provides a refining device for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating, comprising multiple rotating cylinders 1 arranged sequentially along the axial direction. A gap is provided between adjacent rotating cylinders 1, and a connecting seat 2 is provided within the gap. The rotating cylinders 1 and the connecting seat 2 are rotatably connected. A ring of first liner plates 3 is arranged at equal intervals inside the rotating cylinders 1. A liner groove 4 is formed between adjacent first liner plates 3, and a second liner plate 5 is provided within the liner groove 4. An arc-shaped sieve plate 6 is provided inside the rotating cylinders 1, located in the third quadrant of the inner cavity of the rotating cylinders 1. The outer surface of the arc-shaped sieve plate 6... The surface slides between the inner end of the first liner plate 3 and the surface of the first liner plate 3. A discharge channel 7 is provided between two adjacent rotating cylinders 1. The discharge channel 7 is located within the circumference of the arc-shaped screen plate 6 in the circumferential direction. A pusher plate 8 is provided in the liner groove 4, which can move back and forth between its two ends in the axial direction. The outer side of the pusher plate 8 is located on the same circumferential surface as the inner surface of the first liner plate 3. The top of the pusher plate 8 is connected to the outer surface of the arc-shaped screen plate 6. When the pusher plate 8 passes the arc-shaped screen plate 6, it moves back and forth along the axial direction of the liner groove 4, pushing the refined powder coating that falls into the liner groove 4 into the discharge channel 7.

[0039] As the rotating cylinder 1 rotates counterclockwise, the first liner 3 and the second liner 5 rotate synchronously with it. At this time, the material and grinding balls inside the rotating cylinder 1 are simultaneously lifted. When the grinding balls reach their highest position, they fall downwards along a parabolic trajectory, thus achieving the grinding and refining of the material. After being lifted, the material falls downwards in an arc onto the curved screen plate 6. The refined material then passes through the curved screen plate 6 and falls into the liner groove 4 located below it. The pusher plate 8, by moving axially back and forth within the liner groove 4, pushes the refined material into the discharge channel 7, ensuring its timely discharge and improving grinding efficiency.

[0040] The discharge channel 7 includes a discharge trough 7-1 and a discharge port 7-2. The inner diameter of the connecting seat 2 is larger than the inner diameter of the rotating cylinder 1 but smaller than the outer diameter of the rotating cylinder 1, so that the inner surface of the connecting seat 2 and the outer surface of the arc-shaped screen plate 6 form the discharge trough 7-1. The discharge port 7-2 is located on the connecting seat 2 and is in a downward orientation. The raw material pushed out from the liner groove 4 by the push plate first enters the discharge trough 7-1, and then is discharged through the discharge port 7-2 along the discharge trough 7-1.

[0041] When the liner groove 4 is located outside the arc-shaped screen plate 6, the pusher plate 8 inside the liner groove 4 is located at the upstream end of the liner groove 4. A lower baffle ring 9 is provided at the downstream end of the arc-shaped screen plate 6, and the lower baffle ring 9 blocks the downstream end of the liner groove 4 located outside the arc-shaped screen plate 6. An upper baffle ring 10 with an inverted "L" shaped cross-section is provided at the upstream end of the arc-shaped screen plate 6, and the pusher plate 8 located inside the upstream end of the liner groove 4 is housed in the upper baffle ring 10. The upper baffle ring 10, the arc-shaped screen plate 6 and the lower baffle ring 9 are fixedly connected, and the outer surfaces of the upper baffle ring 10 and the lower baffle ring 9 are fixedly connected to the inner surface of the connecting seat 2.

[0042] At this time, the upper baffle ring 10 can shield and protect the pusher plate 8 to prevent the pusher plate 8 from being damaged by the impact of the grinding balls, and the lower baffle ring 9 can block the downstream end of the liner groove 4 located outside the arc screen plate 6 to prevent the raw material from accidentally leaving the cavity of the rotating cylinder 1.

[0043] The downstream end of the first liner 3 is flush with the downstream end of the second liner 5, and the upstream end of the first liner 3 extends upstream from the upstream end of the second liner 5 into the interior of the upper retaining ring 10. The length difference between the first liner 3 and the second liner 5 is equal to the thickness of the pusher plate 8. With this arrangement, when the liner groove 4 is outside the arc-shaped screen plate 6, the pusher plate 8 located in the liner groove 4 blocks the upstream end of the liner groove 4, preventing the raw material from accidentally leaving the cavity of the rotating cylinder 1.

[0044] Furthermore, both ends of the pusher plate 8 are provided with sliding grooves 11, and sliding strips 12 are fixedly installed on the opposite surfaces of two adjacent second liners 5, with the sliding grooves 11 fitted onto the sliding strips 12. A guide ball 13 is fixedly installed in the middle of the inner surface of the pusher plate 8, and a guide groove 14 is provided between the arc-shaped screen plate 6 and the upper retaining ring 10. The guide ball 13 is rolled in the guide groove 14. The guide groove 14 includes a spiral section 14-1 and an annular section 14-2. The spiral section 14-1 is fixed on the outer surface of the arc-shaped screen plate 6, and the annular section 14-2 is fixed on the upper retaining ring 10.

[0045] By setting the spiral section 14-1, as the first liner 3 and the second liner 5 rotate with the rotating cylinder 1, the pusher plate 8 moves synchronously while the guide ball 13 rolls in the guide groove 14. When the liner groove 4 moves to below the arc-shaped screen plate 6, the guide ball 13 enters the spiral section 14-1. Consequently, as the liner groove 4 moves out from below the arc-shaped screen plate 6, the spiral section 14-1, through the guide ball 13, causes the pusher plate 8 to move axially back and forth in the liner groove 4. During the back and forth movement of the pusher plate 8, the raw material that has entered the liner groove 4 from the arc-shaped screen plate 6 is pushed out of the liner groove 4, allowing the raw material that has reached the refining standard to enter the discharge channel 7. After the liner groove 4 leaves the arc-shaped screen plate 6, the guide ball 13 rolls in the annular section 14-2. At this time, the annular section 14-2, in conjunction with the guide ball 13, keeps the pusher plate 8 contained within the upper retaining ring 10 and moves synchronously with the liner groove 4.

[0046] In this design, the opposite sides of two adjacent first liner plates 3 are parallel. The second liner plate 5 includes a fixed plate 5-1 and a movable plate 5-2. A storage spring 5-3 is provided between the fixed plate 5-1 and the movable plate 5-2. A plate control structure is connected to the outer side of the movable plate 5-2.

[0047] When the grinding ball moves to its highest position following the second liner 5, the plate control structure releases the energy storage spring 5-3, causing the movable plate 5-2 to bounce inward; when the second liner 5 passes the top of the rotating cylinder, the plate control structure causes the movable plate 5-2 to reset outward and causes the energy storage spring 5-3 to recompress.

[0048] By making the above settings, when the grinding balls are raised to their highest position as the rotating cylinder 1 rotates, the movable plate 5-2 pops out inward, increasing the kinetic energy of the grinding balls, improving the grinding force of the grinding balls on the raw materials, enhancing the grinding effect, and increasing the grinding efficiency. At the same time, during the rapid inward popping of the inner plate, the inertia and vibration generated can better facilitate the separation of the raw materials from the first liner 3 and the second liner 5, preventing the powder raw materials from sticking to the first liner 3 and the second liner 5 and affecting the cleaning of the rotating cylinder 1.

[0049] Furthermore, an externally threaded sleeve 15 is fixedly installed on the outer surface of the fixed plate 5-1. The outer end of the externally threaded sleeve 15 penetrates the rotating cylinder 1 from the inside out. A fixing nut 16 is connected to the external thread of the externally threaded sleeve 15. The plate control structure includes a slide rod 17, a pulley 18, and a slide rail 19. The slide rod 17 passes through the externally threaded sleeve 15, and the inner end of the slide rod 17 is fixedly connected to the movable plate 5-2. The pulley 18 is installed on the outer end of the slide rod 17. The slide rail 19 is fixedly installed on the connecting seat 2. The slide rail 19 has a notch corresponding to the release position of the energy storage spring 5-3. The pulley 18 moves on the slide rail 19, causing the energy storage spring 5-3 to be compressed. The pulley 18 enters the notch and disengages from the slide rail 19, causing the energy storage spring 5-3 to be released. The pulley 18 slides back onto the slide rail 19 through the notch, causing the energy storage spring 5-3 to be compressed again. During the rotation of the rotating cylinder 1, the pulley 18 moves within the slide rail 19. The external threaded sleeve 15, together with the fixing nut 16, detachably and securely mounts the fixing plate 5-1 onto the rotating cylinder 1.

[0050] The fixed plate 5-1 and the movable plate 5-2 are respectively in contact with the opposite side of the first liner 3 on both sides. When the movable plate 5-2 is ejected inward, its two axial sides are respectively in contact with the opposite surfaces of the lower retaining ring 9 and the pusher plate 8. The movable plate 5-2 has a groove 5-4 with its outer surface recessed inward. When the storage spring 5-3 is in a compressed state, the groove opening of the groove 5-4 is in contact with the inner surface of the fixed plate 5-1.

[0051] A discharge hopper 20 is provided below the rotating cylinder 1, and a spiral feeder 21 is provided at the bottom end of the discharge hopper 20. The discharge hopper 20 is fixedly installed on the connecting seat 2, and a drive shaft 22 is rotatably installed on the connecting seat 2. A drive gear ring 23 is fixedly installed on the outside of the rotating cylinder 1, and a drive gear 24 meshes with the outside of the drive gear ring 23. The drive gear 24 is fixedly installed on the drive shaft 22, and a power unit is connected to the drive shaft 22. The connecting seat 2 and the spiral feeder 21 are both installed on the frame 25. End caps 26 are provided on the outer surfaces of the rotating cylinder 1 at both ends, and a spiral feeder 27 is connected to the first end cap 26 located upstream. The spiral feeder 27 and the end cap 26 are both fixedly installed on the frame 25. The upper retaining ring 10 and the lower retaining ring 9 located upstream and downstream are respectively fixedly connected to the inner wall surfaces of the two end caps 26.

[0052] With this configuration, after the power unit is started, it drives the drive shaft 22 to rotate. The drive shaft 22, through the drive gear 24 and drive gear ring 23, simultaneously drives all the rotating cylinders 1 to rotate synchronously. During the grinding and refining of raw materials, the raw materials discharged from the discharge port 7-2 enter the discharge hopper 20, and then enter the screw feeder 21 from the discharge hopper 20 for centralized discharge. At the same time, new raw materials to be refined are continuously replenished into the rotating cylinders 1 by the screw feeder 27.

[0053] The present invention also provides a refining process for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating, which uses the above-mentioned refining equipment for the environmentally friendly epoxy zinc-rich anti-corrosion powder coating to refine the raw materials of the environmentally friendly epoxy zinc-rich anti-corrosion powder coating.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A refining device for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating, characterized in that, The device includes multiple rotating cylinders (1) arranged sequentially along the axial direction. A gap is provided between adjacent rotating cylinders (1), and a connecting seat (2) is provided within the gap. The rotating cylinders (1) and the connecting seat (2) are rotatably connected. A ring of first liner plates (3) is arranged at equal intervals inside each rotating cylinder (1). A liner groove (4) is formed between adjacent first liner plates (3), and a second liner plate (5) is provided within the liner groove (4). An arc-shaped sieve plate (6) is provided inside each rotating cylinder (1). The arc-shaped sieve plate (6) is located in the third quadrant of the inner cavity of the rotating cylinder (1). The outer surface of the arc-shaped sieve plate (6) is flush with the inner end of the first liner plate (3). The two adjacent rotating cylinders (1) are provided with a discharge channel (7), and the discharge channel (7) is located within the circumference of the arc-shaped screen plate (6) in the circumferential direction. The liner groove (4) is provided with a pusher plate (8) that can move back and forth between its two ends in the axial direction. The outer side of the pusher plate (8) is located on the same circumferential surface as the inner surface of the first liner plate (3). The top of the pusher plate (8) is connected to the outer surface of the arc-shaped screen plate (6). When the pusher plate (8) passes the arc-shaped screen plate (6), it moves back and forth along the axial direction of the liner groove (4) to push the refined powder coating that falls into the liner groove (4) into the discharge channel (7). When the liner groove (4) is located outside the arc screen plate (6), the pusher plate (8) inside the liner groove (4) is located at the upstream end of the liner groove (4), and a lower baffle ring (9) is provided at the downstream end of the arc screen plate (6), and the lower baffle ring (9) blocks the downstream end of the liner groove (4) located outside the arc screen plate (6). An upper baffle ring (10) with an inverted "L" shaped cross section is provided at the upstream end of the arc screen plate (6), and the pusher plate (8) located at the upstream end of the liner groove (4) is housed in the upper baffle ring (10). The upper baffle ring (10), the arc screen plate (6) and the lower baffle ring (9) are fixedly connected. The outer surfaces of the upper baffle ring (10) and the lower baffle ring (9) are fixedly connected to the inner surface of the connecting seat (2). The downstream end of the first liner (3) is flush with the downstream end of the second liner (5), and the upstream end of the first liner (3) extends upstream from the upstream end of the second liner (5) into the interior of the upper retaining ring (10), and the length difference between the first liner (3) and the second liner (5) is equal to the thickness of the pusher plate (8). Both ends of the pusher plate (8) are provided with sliding grooves (11), and sliding strips (12) are fixedly installed on the opposite surfaces of the two adjacent second liners (5). The sliding grooves (11) are sleeved on the sliding strips (12). A guide ball (13) is fixedly installed in the middle of the inner surface of the pusher plate (8). A guide groove (14) is provided between the arc-shaped screen plate (6) and the upper retaining ring (10). The guide ball (13) is rolled in the guide groove (14). The guide groove (14) includes a spiral section (14-1) and an annular section (14-2). The spiral section (14-1) is fixed on the outer surface of the arc-shaped screen plate (6), and the annular section (14-2) is fixed on the upper retaining ring (10).

2. The refining equipment for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating according to claim 1, characterized in that, The discharge channel (7) includes a discharge trough (7-1) and a discharge port (7-2). The inner diameter of the connecting seat (2) is larger than the inner diameter of the rotating cylinder (1) and smaller than the outer diameter of the rotating cylinder (1), so that the discharge trough (7-1) is formed between the inner surface of the connecting seat (2) and the outer surface of the arc-shaped screen plate (6). The discharge port (7-2) is located on the connecting seat (2) and the discharge port (7-2) is facing downward.

3. The refining equipment for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating according to claim 1, characterized in that, The two adjacent first liner plates (3) have parallel sides facing each other. The second liner plate (5) includes a fixed plate (5-1) and a movable plate (5-2). A storage spring (5-3) is provided between the fixed plate (5-1) and the movable plate (5-2). A plate control structure is connected to the outer side of the movable plate (5-2). When the grinding ball moves to the highest position following the second liner (5), the plate control structure releases the energy storage spring (5-3), causing the movable plate (5-2) to bounce inward; when the second liner (5) passes the top of the rotating cylinder, the plate control structure causes the movable plate (5-2) to reset outward and causes the energy storage spring (5-3) to recompress.

4. The refining equipment for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating according to claim 3, characterized in that, An external threaded sleeve (15) is fixedly installed on the outer surface of the fixed plate (5-1). The outer end of the external threaded sleeve (15) penetrates the rotating cylinder (1) from the inside out. A fixing nut (16) is connected to the external thread of the external threaded sleeve (15). The plate control structure includes a slide rod (17), a pulley (18), and a slide rail (19). The slide rod (17) passes through the external threaded sleeve (15). The inner end of the slide rod (17) is fixedly connected to the movable plate (5-2). The pulley (18) is installed on the slide rod (17). On the outer end of the slide rail (19), the slide rail (19) is fixedly installed on the connecting seat (2). The slide rail (19) has a notch corresponding to the release position of the energy storage spring (5-3). The pulley (18) moves on the slide rail (19) to compress the energy storage spring (5-3). The pulley (18) enters the notch and disengages from the slide rail (19) to release the energy storage spring (5-3). The pulley (18) slides back onto the slide rail (19) through the notch to recompress the energy storage spring (5-3).

5. The refining equipment for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating according to claim 4, characterized in that, The two sides of the fixed plate (5-1) and the movable plate (5-2) respectively contact the opposite side of the first liner (3) on both sides. When the movable plate (5-2) is ejected inward, its two axial sides respectively contact the opposite surfaces of the lower retaining ring (9) and the pusher plate (8). The movable plate (5-2) has a groove (5-4) with its outer surface recessed inward. When the energy storage spring (5-3) is in a compressed state, the groove opening of the groove (5-4) contacts the inner surface of the fixed plate (5-1).

6. The refining equipment for an environmentally friendly epoxy zinc-rich anti-corrosion powder coating according to claim 1, characterized in that, A discharge hopper (20) is provided below the rotating cylinder (1), and a spiral feeder (21) is provided at the bottom end of the discharge hopper (20). The discharge hopper (20) is fixedly installed on the connecting seat (2), and a drive shaft (22) is rotatably installed on the connecting seat (2). A drive gear ring (23) is fixedly installed on the outside of the rotating cylinder (1), and a drive gear (24) meshes with the outside of the drive gear ring (23). The drive gear (24) is fixedly installed on the drive shaft (22). The machine is connected to a power unit. The connecting seat (2) and the screw feeder (21) are both mounted on the frame (25). The outer side of the rotating cylinder (1) at both ends is provided with end caps (26). The first end cap (26) located upstream is connected to a screw feeder (27). The screw feeder (27) and the end cap (26) are both fixedly mounted on the frame (25). The upper retaining ring (10) and the lower retaining ring (9) located upstream and downstream are respectively fixedly connected to the inner wall surfaces of the two end caps (26).

Images