A feeding device suitable for PVDF powder production

Abstract

This invention relates to the field of feeding device technology, specifically a feeding device suitable for PVDF powder production. It includes a feeding pipe and a powder collection structure and a driving structure connected to the feeding position of the feeding pipe. It also includes a discharge pipe connected to the discharge end of the feeding pipe, with a discharge hopper fixedly connected to the discharge end. The inner wall of the discharge hopper near the feeding pipe has a guide radius, and the inner wall near the driving structure has an abutment radius. Pusher plates are evenly distributed within the cavity formed by the feeding pipe and the discharge pipe. When the pusher plates move the PVDF powder inside the powder collection structure within the feeding pipe, a second magnetic block can drive the chain link to rise via the first magnetic block. This avoids friction between the chain link and the inner wall of the feeding pipe, enabling stable movement of the pusher plates within the feeding pipe and preventing friction damage to the chain link.

Description

Technical Field

[0001] This invention relates to the field of feeding device technology, specifically a feeding device suitable for PVDF powder production. Background Technology

[0002] PVDF powder is a high-molecular polymer, mainly composed of polyvinylidene fluoride (PVDF). It has excellent weather resistance, corrosion resistance, high temperature resistance, insulation, and flame retardancy. During the production process, PVDF powder needs to be transported using a feeding device. Currently, PVDF powder on the market is mainly transported by tubular chain conveyors after production. The tubular chain conveyor mainly consists of a conveying pipe and a chain structure running through the inside of the conveying pipe. Conveying pushers are connected to the chain structure. When PVDF powder is injected into the inside of the conveying pipe, the chain structure can drive the conveying pushers to push the PVDF powder, enabling the PVDF powder to move inside the conveying pipe.

[0003] In actual use, this type of conveyor does indeed achieve a good feeding and transporting effect for PVDF powder. However, when the chain structure drives the conveyor pusher to move inside the conveying pipe, the chain structure is prone to friction with the inner wall of the conveying pipe, which can lead to chain breakage. When the chain structure drives the conveyor pusher to move inside the conveying pipe, PVDF powder easily adheres to the connection between the chain structure and the conveyor pusher. When the conveyor pusher carries the PVDF powder to the discharge end of the device, the PVDF powder inside the conveying pipe cannot be completely discharged, which reduces the feeding efficiency of PVDF powder. Therefore, we propose a feeding device suitable for PVDF powder production. Summary of the Invention

[0004] One of the technical problems this application aims to solve is that the chain structure of the tubular chain conveyor is prone to friction with the inner wall of the conveying pipe, and PVDF powder is easily adhered to the connection between the chain structure and the conveying pusher.

[0005] To address the aforementioned technical problems, this application provides a feeding device suitable for PVDF powder production, including a conveying pipe and a powder collection structure and a driving structure connected to the feeding position of the conveying pipe, and further including:

[0006] A discharge pipe fitting is connected to the discharge end of a conveying pipe fitting. A discharge hopper is fixedly connected to the discharge end of the discharge pipe fitting. A guide rounded corner is provided on the inner wall of the discharge hopper near the conveying pipe fitting. An abutment rounded corner is provided on the inner wall of the discharge hopper near the drive structure.

[0007] The pusher plate is evenly distributed inside the cavity formed by the conveying pipe and the discharging pipe. A second connecting ring is distributed on one side of the pusher plate, and a first connecting ring is distributed on the other side of the pusher plate. A ring-shaped chain link passes through between the second connecting ring and the first connecting ring. A strip-shaped stirring rod is fixedly connected to the outer wall of the chain link at equal intervals. A first magnetic block is fixedly connected to the end of the stirring rod.

[0008] The conveying pipe is provided with an installation part, and second magnetic blocks are evenly distributed on the installation part. The second magnetic blocks are magnetically engaged with the first magnetic blocks. When the second magnetic blocks are attracted to the first magnetic blocks, the first magnetic blocks can drive the chain link to move upward through the stirring rod. The inner wall of the discharge hopper is inclined and fixedly connected with a guide rod on the abutment rounded corner.

[0009] In some embodiments, the pusher plate is a circular sheet structure, the sidewall of the pusher plate can abut against the inner wall of the conveying pipe and the discharging pipe, and a sliding notch is provided at the lower part of the pusher plate.

[0010] In some embodiments, the inner cavity of the discharge pipe is connected to the inner cavity of the discharge hopper, the discharge hopper is a bucket-shaped structure, and mounting plates are fixedly connected to the upper part of the outer wall of the discharge hopper on both sides. A sleeve collar is fixedly connected to the mounting plate by bolts, and the sleeve collar is sleeved with the discharge pipe.

[0011] In some embodiments, an embedding hole is provided at the center of the pusher plate, and a first rotating column and a second rotating column are inserted and fixed inside the embedding hole. A first rotating ring is fixedly connected to the first rotating column, and a second rotating ring is fixedly connected to the second rotating column. The first rotating ring and the second rotating ring are rotatably connected to the pusher plate. The first rotating column is fixedly connected to the second connecting ring, and the second rotating column is fixedly connected to the first connecting ring.

[0012] In some embodiments, the pusher plate is provided with a sliding groove, a sliding plate is slidably connected inside the sliding notch, and an auxiliary sliding rod and a sliding rack are fixedly connected to the upper part of the sliding plate. The auxiliary sliding rod and the sliding rack are slidably connected to the pusher plate through the sliding groove.

[0013] In some embodiments, the axes of the first rotating column and the second rotating column coincide with the axis of the pusher plate, the chain link is a ring structure, and the chain link is connected between two adjacent pusher plates through a second connecting ring and a first connecting ring.

[0014] In some embodiments, a rotating groove is provided in the middle of the pusher plate, the inner cavity of the rotating groove is connected to the inner cavity of the sliding channel, and an abutting end is fixedly connected to the upper end of the sliding rack, the abutting end always sliding inside the sliding channel.

[0015] In some embodiments, the second rotating column is rotatably connected to a rotating wheel located inside the rotating groove. The rotating wheel is designed with rotating teeth, and there are six rotating teeth distributed in total. The angle between every two adjacent rotating teeth is 15 degrees. The sliding rack is provided with an embedded tooth groove, and the sliding rack meshes with the rotating teeth through the embedded tooth groove.

[0016] In some embodiments, two guide rods are connected to the abutment fillet, and the lower part of the sliding plate can abut against the guide fillet, the abutment fillet, and the guide rods to drive the sliding plate to move in a guiding manner. The thickness of the sliding plate is the same as the depth of the sliding notch.

[0017] In some embodiments, the inner wall of the rotating groove is fixedly connected with an abutment portion, which can abut against the lowest rotating tooth.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. When the pusher plate moves the PVDF powder inside the powder collection structure inside the conveying pipe, the second magnetic block can drive the chain link to rise through the first magnetic block. This can avoid friction between the chain link and the inner wall of the conveying pipe, enabling the chain link to drive the pusher plate to move stably inside the conveying pipe, and also preventing friction damage to the chain link.

[0020] 2. When multiple raw materials are transported inside the conveying pipe, the second magnetic block drives the chain link to rise inside the conveying pipe through the first magnetic block. The stirring rod can drive the PVDF powder inside the conveying pipe to stir, which can realize the rapid mixing of PVDF powder and multiple raw materials inside the conveying pipe.

[0021] 3. When the pusher plate moves the PVDF powder to the top of the discharge hopper, the sliding plate can move downward under the action of gravity. The sliding rack on the sliding plate can drive the second rotating column to rotate through the rotating teeth. At this time, the first connecting ring can drive the stirring rod to flip through the chain link, so that the PVDF powder around the chain link and the pusher plate can fall quickly into the interior of the discharge hopper.

[0022] 4. Since there are two guide rods on the abutment rounded corner, when the lower part of the sliding plate moves along the outer wall of the guide rod, the sliding plate can experience two upward and downward movements. This causes the PVDF powder around the sliding plate to experience two vibrations and pulls, which can realize the rapid separation of the PVDF powder around the sliding plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the connection between the pusher plate and the discharge pipe in this invention;

[0025] Figure 3 This is a schematic diagram showing the connection between the guide rod and the abutment fillet in this invention;

[0026] Figure 4 This is a schematic diagram showing the distribution of the chain links and pusher plates in this invention;

[0027] Figure 5 This is a schematic diagram of the connection between the stirring rod and the chain link in this invention;

[0028] Figure 6 This is a schematic diagram showing the distribution of the auxiliary slide bar and sliding rack in this invention;

[0029] Figure 7 This is a schematic diagram showing the connection between the second rotating column and the pusher plate in this invention;

[0030] Figure 8 This is a schematic diagram showing the connection between the sliding rack and the pusher plate in this invention;

[0031] Figure 9 This is a schematic diagram showing the connection between the second magnetic block and the material conveying pipe in this invention;

[0032] Figure 10 This is a schematic diagram showing the connection between the discharge hopper and the discharge pipe in this invention.

[0033] In the diagram: 1. Powder collecting structure; 2. Conveying pipe fitting; 3. Discharging pipe fitting; 4. Discharging hopper; 5. Guide rounded corner; 6. Abutment rounded corner; 7. Guide rod; 8. Chain link; 9. Pusher plate; 10. Sleeve collar ring; 11. Stirring rod; 12. First connecting ring; 13. First rotating column; 14. Sliding plate; 15. Sliding notch; 16. Sliding rack; 17. Second rotating column; 18. First rotating ring; 19. Second connecting ring; 20. Second rotating ring; 21. Rotating tooth; 22. Embedded tooth groove; 23. Auxiliary slide rod; 24. Embedded hole; 25. Abutment part; 26. Abutment end; 27. Sliding channel; 28. Rotating groove; 29. ​​Mounting part; 30. Second magnetic block; 31. Mounting plate; 32. First magnetic block; 33. Drive structure. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0035] Example 1: Please refer to Figure 1-10 The present invention provides a technical solution:

[0036] A feeding device suitable for PVDF powder production includes a conveying pipe 2 and a powder collecting structure 1 and a driving structure 33 connected to the feeding position of the conveying pipe 2. The powder collecting structure 1 is a prior art structure for collecting PVDF powder and can convey the PVDF powder into the conveying pipe 2. The driving structure 33 is a prior art structure for driving a chain structure, which can drive the chain structure to shuttle inside the conveying pipe 2. The device also includes:

[0037] The discharge pipe 3 is connected to the discharge end of the conveying pipe 2. The discharge hopper 4 is fixedly connected to the discharge end of the discharge pipe 3. The discharge pipe 3 can drive the PVDF powder inside the conveying pipe 2 to be conveyed to the discharge hopper 4. The inner wall of the discharge hopper 4 is provided with a guide rounded corner 5 near the conveying pipe 2 and an abutment rounded corner 6 near the drive structure 33. A pusher plate 9 slides in the inner cavity formed by the discharge pipe 3 and the conveying pipe 2. A sliding plate 14 slides on the pusher plate 9. The guide rounded corner 5 and the abutment rounded corner 6 are the parts where the sliding plate 14 abuts with the discharge hopper 4. When the sliding plate 14 abuts on the abutment rounded corner 6, the sliding plate 14 can slowly move down in the sliding notch 15. When the sliding plate 14 abuts on the guide rounded corner 5, the sliding plate 14 can slowly move up in the sliding notch 15.

[0038] Pusher plates 9 are evenly spaced within the cavity formed by the conveying pipe 2 and the discharging pipe 3. Each pusher plate 9 has a circular, plate-like structure and can move the PVDF powder within the cavities of the conveying pipe 2 and the discharging pipe 3. A second connecting ring 19 is located on one side of each pusher plate 9, and a first connecting ring 12 is located on the other side. A ring-shaped chain link 8 passes through the second connecting ring 19 and the first connecting ring 12. The chain link 8 can move two adjacent pusher plates 9 via the second connecting ring 19 and the first connecting ring 12. Strip-shaped stirring rods 11 are fixedly connected to the outer wall of the chain link 8 at equal intervals. When the chain link 8 moves, the stirring rods 11 can agitate the PVDF powder in the conveying pipe 2 and the discharging pipe 3. The end is fixedly connected to a first magnetic block 32. The pusher plate 9 is a circular plate structure. The side wall of the pusher plate 9 can abut against the inner wall of the conveying pipe 2 and the discharge pipe 3, so that the pusher plate 9 can drive the PVDF powder to move. The lower part of the pusher plate 9 is provided with a sliding notch 15 and the pusher plate 9 is provided with a sliding groove 27. The sliding plate 14 is slidably connected inside the sliding notch 15. The upper part of the sliding plate 14 is fixedly connected with an auxiliary sliding rod 23 and a sliding rack 16. The auxiliary sliding rod 23 and the sliding rack 16 are slidably connected to the pusher plate 9 through the sliding groove 27. The sliding plate 14 can slide on the pusher plate 9 through the auxiliary sliding rod 23 and the sliding rack 16, so that the PVDF powder around the pusher plate 9 can fall into the interior of the discharge hopper 4.

[0039] In actual use, the drive structure 33 can drive the position of the chain link 8 to move. At this time, the chain link 8 can drive the pusher plate 9 to move inside the conveying pipe 2 and the discharge pipe 3. This allows the pusher plate 9 to drive the PVDF powder to move inside the conveying pipe 2 and the discharge pipe 3. When the chain link 8 is vibrated, the chain link 8 can drive the stirring rod 11 to move. This allows the chain link 8 to drive the stirring rod 11 to stir the PVDF powder in the conveying pipe 2 and the discharge pipe 3. This is beneficial for mixing various materials with PVDF powder and can also prevent PVDF powder from adhering to the inner wall of the conveying pipe 2 and the discharge pipe 3. The shape of the stirring rod 11 can be set according to the actual situation. Since the sliding plate 14 can slide inside the sliding notch 15, when the pusher plate 9 moves above the discharge hopper 4, the sliding plate 14 can move downwards. This allows the PVDF powder around the pusher plate 9 and the chain link 8 to fall into the sliding plate 14, preventing the PVDF powder from adhering to the pusher plate 9 and the chain link 8.

[0040] Example 2: Please refer to Figure 1-10 The present invention provides a technical solution:

[0041] The material conveying pipe 2 is provided with an installation part 29, on which second magnetic blocks 30 are evenly distributed. There is a gap between every two adjacent second magnetic blocks 30. The second magnetic blocks 30 and the first magnetic blocks 32 are magnetically engaged. When the second magnetic blocks 30 and the first magnetic blocks 32 are adjacent, the second magnetic blocks 30 can attract the first magnetic blocks 32 to move upward, which can realize the position of the chain link 8. The inner wall of the discharge hopper 4 is inclinedly fixedly connected to the guide rod 7 on the abutment rounded corner 6. The guide rod 7 is inclinedly set on the inner wall of the abutment rounded corner 6. When the sliding plate 14 slides on the guide rod 7, the use position of the sliding plate 14 can be raised.

[0042] When the chain link 8 drives the pusher plate 9 to move inside the conveying pipe 2 and the discharging pipe 3, the pusher plate 9 can drive the PVDF powder to move. Since the conveying pipe 2 is provided with a second magnetic block 30, when the second magnetic block 30 attracts the first magnetic block 32, the first magnetic block 32 can drive the chain link 8 to rise through the stirring rod 11, which can avoid the chain link 8 from rubbing against the inner wall of the conveying pipe 2 and the discharging pipe 3. Since there is a gap between every two adjacent second magnetic blocks 30, when the second magnetic block 30 is not attracted by the first magnetic block 32, the position of the chain link 8 will move down. At this time, the chain link 8 can drive the stirring rod 11 to stir the PVDF powder.

[0043] Example 3: Please refer to Figure 1-10 The present invention provides a technical solution:

[0044] The inner cavity of the discharge pipe 3 is connected to the inner cavity of the discharge hopper 4. The discharge hopper 4 has a bucket-shaped structure. The discharge pipe 3 can move the PVDF powder inside the conveying pipe 2 into the discharge hopper 4. The upper part of the outer wall of the discharge hopper 4 is fixedly connected to the two sides with mounting plates 31. The mounting plates 31 are fixedly connected with the sleeve rings 10 by bolts. The sleeve rings 10 are sleeved with the discharge pipe 3, which can realize a stable connection between the discharge pipe 3 and the discharge hopper 4.

[0045] An insertion hole 24 is provided at the center of the pusher plate 9. A first rotating column 13 and a second rotating column 17 are inserted and fixed inside the insertion hole 24. A first rotating ring 18 is fixedly connected to the first rotating column 13, and a second rotating ring 20 is fixedly connected to the second rotating column 17. The first rotating ring 18 and the second rotating ring 20 are rotatably connected to the pusher plate 9. The first rotating column 13 is fixedly connected to the second connecting ring 19, and the second rotating column 17 is fixedly connected to the first connecting ring 12. The second rotating column 17 can rotate on the pusher plate 9 through the second rotating ring 20, and the first rotating column 13 can rotate on the pusher plate 9 through the first rotating ring 18. Since a ring-shaped chain link 8 passes through the second connecting ring 19 and the first connecting ring 12, the chain link 8 can rotate between two adjacent pusher plates 9 through the second connecting ring 19 and the first connecting ring 12.

[0046] The axes of the first rotating column 13 and the second rotating column 17 coincide with the axis of the pusher plate 9. The chain link 8 has a ring structure and is connected between two adjacent pusher plates 9 through the second connecting ring 19 and the first connecting ring 12.

[0047] A rotating groove 28 is provided in the middle of the pusher plate 9. The inner cavity of the rotating groove 28 is connected to the inner cavity of the sliding channel 27. The upper end of the sliding rack 16 is fixedly connected to the abutting end 26. The abutting end 26 always slides inside the sliding channel 27. The abutting end 26 can limit the downward movement length of the sliding rack 16 and prevent the sliding rack 16 from separating from the pusher plate 9.

[0048] The second rotating column 17 is rotatably connected to a rotating wheel located inside the rotating groove 28. The rotating wheel is designed with rotating teeth 21, and there are six rotating teeth 21 distributed in total. The angle between each two adjacent rotating teeth 21 is 15 degrees. The sliding rack 16 is provided with an embedded tooth groove 22. The sliding rack 16 meshes with the rotating teeth 21 through the embedded tooth groove 22. When the sliding plate 14 drives the sliding rack 16 to move down, the sliding rack 16 can drive the second rotating column 17 to rotate through the rotating teeth 21, so that the first connecting ring 12 can drive the stirring rod 11 to flip through the chain link 8.

[0049] There are two guide rods 7 connected to the abutment fillet 6. The lower part of the sliding plate 14 can abut against the guide fillet 5, the abutment fillet 6, and the guide rods 7. The thickness of the sliding plate 14 is the same as the depth of the sliding notch 15. When the lower part of the sliding plate 14 moves on the guide rods 7, the sliding plate 14 can move upward in the sliding notch 15.

[0050] The inner wall of the rotating groove 28 is fixedly connected with an abutment part 25, which can abut against the lowest rotating tooth 21. When the abutment part 25 abuts against the rotating tooth 21, the rotation angle of the first connecting ring 12 driving the chain link 8 can be limited. At the same time, the abutment end 26 is also distributed at the bottom of the sliding groove 27.

[0051] When the pusher plate 9 enters the discharge hopper 4, the bottom of the sliding plate 14 contacts the guide rounded corner 5. At this time, the sliding plate 14 can move down in the sliding notch 15, and the powder between the sliding plate 14 and the chain link 8 can be pulled. When the sliding plate 14 drives the sliding rack 16 to move down, the sliding rack 16 can drive the second rotating column 17 to rotate through the rotating teeth 21. This can realize that the first connecting ring 12 drives the stirring rod 11 to rotate in the forward direction through the chain link 8, and can realize that the powder around the sliding plate 14 and the chain link 8 can fall quickly into the discharge hopper 4. Since the guide rod 7 is provided on the contact rounded corner 6, when the lower part of the sliding plate 14 moves on the guide rod 7, The sliding plate 14 can move upward in the sliding notch 15. At this time, the sliding rack 16 can drive the second rotating column 17 to rotate through the rotating tooth 21. This can enable the first connecting ring 12 to drive the stirring rod 11 to reverse through the chain link 8. This can also make the powder around the sliding plate 14 and the chain link 8 agitated. The number of guide rods 7 can be set according to the actual situation and is not within the scope of protection of this document. Since the number of guide rods 7 shown in this document is two, when the sliding plate 14 slides on the two guide rods 7, the guide rods 7 can be lifted twice, which can help the PVDF powder around the sliding plate 14 to quickly enter the interior of the discharge hopper 4.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the 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 these embodiments without departing from the principles and spirit of the invention.

Claims

1. A feeding device suitable for PVDF powder production, comprising a feeding pipe (2) and a powder collecting structure (1) and a driving structure (33) connected to the feeding position of the feeding pipe (2), characterized in that: Also includes: The discharge pipe (3) is connected to the discharge end of the conveying pipe (2). A discharge hopper (4) is fixedly connected to the discharge end of the discharge pipe (3). A guide rounded corner (5) is provided on the inner wall of the discharge hopper (4) near the conveying pipe (2). An abutment rounded corner (6) is provided on the inner wall of the discharge hopper (4) near the drive structure (33). Pusher blades (9) are evenly distributed inside the cavity formed by the conveying pipe (2) and the discharge pipe (3). A second connecting ring (19) is distributed on one side of the pusher blades (9), and a first connecting ring (12) is distributed on the other side of the pusher blades (9). A ring-shaped chain link (8) passes through the second connecting ring (19) and the first connecting ring (12). A strip-shaped stirring rod (11) is fixedly connected to the outer wall of the chain link (8) at equal intervals. A first magnetic block (32) is fixedly connected to the end of the stirring rod (11). The conveying pipe (2) is provided with an installation part (29), and the installation part (29) is provided with second magnetic blocks (30) evenly distributed. The second magnetic blocks (30) and the first magnetic block (32) are magnetically engaged. When the second magnetic block (30) and the first magnetic block (32) are attracted, the first magnetic block (32) can drive the chain link (8) to move upward through the stirring rod (11). The inner wall of the discharge hopper (4) is inclined and fixedly connected to the guide rod (7) on the abutment round corner (6). The pusher plate (9) is a circular sheet structure. The side wall of the pusher plate (9) can abut against the inner wall of the conveying pipe (2) and the discharge pipe (3). The lower part of the pusher plate (9) is provided with a sliding notch (15). The pusher plate (9) is provided with a sliding groove (27), and a sliding plate (14) is slidably connected inside the sliding notch (15). An auxiliary slide rod (23) and a sliding rack (16) are fixedly connected to the upper part of the sliding plate (14). The auxiliary slide rod (23) and the sliding rack (16) are slidably connected to the pusher plate (9) through the sliding groove (27). The chain link (8) is a ring structure, and the chain link (8) is connected between two adjacent pusher plates (9) through a second connecting ring (19) and a first connecting ring (12).

2. The feeding device for PVDF powder production according to claim 1, characterized in that: The inner cavity of the discharge pipe fitting (3) is connected to the inner cavity of the discharge hopper (4). The discharge hopper (4) has a bucket-shaped structure. The upper part of the outer wall of the discharge hopper (4) is fixedly connected to the two sides with mounting plates (31). The mounting plates (31) are fixedly connected with sleeve rings (10) by bolts. The sleeve rings (10) are sleeved with the discharge pipe fitting (3).

3. The feeding device for PVDF powder production according to claim 2, characterized in that: The pusher plate (9) has an embedding hole (24) at its center. A first rotating column (13) and a second rotating column (17) are inserted and fixed inside the embedding hole (24). A first rotating ring (18) is fixedly connected to the first rotating column (13), and a second rotating ring (20) is fixedly connected to the second rotating column (17). The first rotating ring (18) and the second rotating ring (20) are rotatably connected to the pusher plate (9). The first rotating column (13) is fixedly connected to the second connecting ring (19), and the second rotating column (17) is fixedly connected to the first connecting ring (12).

4. The feeding device for PVDF powder production according to claim 3, characterized in that: The axes of the first rotating column (13) and the second rotating column (17) coincide with the axis of the pusher plate (9).

5. The feeding device for PVDF powder production according to claim 4, characterized in that: The pusher plate (9) has a rotating groove (28) in the middle. The inner cavity of the rotating groove (28) is connected to the inner cavity of the sliding channel (27). The upper end of the sliding rack (16) is fixedly connected to an abutting end (26). The abutting end (26) always slides inside the sliding channel (27).

6. The feeding device for PVDF powder production according to claim 5, characterized in that: The second rotating column (17) is rotatably connected to a rotating wheel located inside the rotating groove (28). The rotating wheel is designed with rotating teeth (21). There are six rotating teeth (21). The angle between each two adjacent rotating teeth (21) is fifteen degrees. The sliding rack (16) is provided with an embedded tooth groove (22). The sliding rack (16) meshes with the rotating teeth (21) through the embedded tooth groove (22).

7. The feeding device for PVDF powder production according to claim 6, characterized in that: There are two guide rods (7) connected to the abutting rounded corner (6). The lower part of the sliding plate (14) can abut against the guide rounded corner (5), the abutting rounded corner (6), and the guide rod (7) to drive the sliding plate (14) to move. The thickness of the sliding plate (14) is the same as the depth of the sliding notch (15).

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