Discharging device suitable for PVDF powder production

Abstract

The invention relates to the technical field of discharging devices, in particular to a discharging device suitable for PVDF powder production, which comprises a conveying pipe fitting, a powder collecting structure connected to the feeding position of the conveying pipe fitting and a driving structure, and further comprises a discharging pipe fitting connected to the discharging end of the conveying pipe fitting, a discharging hopper is fixedly connected to the discharging end of the discharging pipe fitting, and the discharging hopper is fixedly connected to the discharging end of the discharging pipe fitting. A guiding fillet is formed in the position, close to the conveying pipe fitting, of the inner wall of the discharging hopper, and an abutting fillet is formed in the position, close to the driving structure, of the inner wall of the discharging hopper; when the pushing pieces drive PVDF powder in the powder collecting structure to move in the conveying pipe fitting, a second magnetic block can drive a chain ring to lift through a first magnetic block, and friction between the chain ring and the inner wall of the conveying pipe fitting can be avoided; the chain ring drives the material pushing piece to stably move in the material conveying pipe fitting, and friction damage to the chain ring can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of blanking devices, in particular to a blanking device suitable for PVDF powder production. Background Art

[0002] ‌PVDF powder is a high molecular polymer, the main component of which is polyvinylidene fluoride (PVDF). It has excellent weather resistance, corrosion resistance, high temperature resistance, insulation and flame retardancy. In the production process of ‌PVDF powder, a feeding device is needed to transport the ‌PVDF powder. At present, the ‌PVDF powder on the market is mainly fed and transported by a tube chain conveyor after production. The tube chain conveyor is mainly composed of a conveying pipeline and a chain structure running through the inside of the conveying pipeline. A conveying push piece is connected to the chain structure. When the ‌PVDF powder is injected into the inside of the conveying pipeline, the chain structure can drive the conveying push piece to push the ‌PVDF powder, so that the ‌PVDF powder can be moved inside the conveying pipeline. When this type of conveyor is used in practice, it can indeed achieve a good material unloading and transportation effect for PVDF powder. When the chain structure drives the conveying push piece to move inside the conveying pipe, the chain structure is prone to friction with the inner wall of the conveying pipe, which will cause the chain structure to break. When the chain structure drives the conveying push piece to move inside the conveying pipe, PVDF powder is easily adhered to the connection part between the chain structure and the conveying push piece. When the conveying push piece drives the PVDF powder to move to the discharge end of the device, the PVDF powder inside the conveying pipe cannot be completely discharged, which will lead to a decrease in the unloading efficiency of the PVDF powder. For this reason, we propose a unloading device suitable for PVDF powder production. Summary of the invention

[0003] A technical problem to be solved by the present application is that the chain structure of the tube chain conveyor is prone to friction with the inner wall of the conveying pipe and the connection part between the chain structure and the conveying push piece is prone to adhesion of PVDF powder.

[0004] In order to solve the above technical problems, the embodiment of the present application provides a feeding device suitable for PVDF powder production, including a feeding pipe and a powder collecting structure and a driving structure connected to the feeding position of the feeding pipe, and also includes: A discharge pipe, the discharge pipe is connected to the discharge end of the feeding pipe, a discharge hopper is fixedly connected to the discharge end of the discharge pipe, a guide fillet is provided on the inner wall of the discharge hopper near the feeding pipe, and an abutment fillet is provided on the inner wall of the discharge hopper near the driving structure; A push piece, the push pieces are evenly spaced inside the cavity formed by the feeding pipe and the discharging pipe, a second connecting ring is distributed on one side of the push piece, a first connecting ring is distributed on the other side of the push piece, an annular chain ring is passed through the second connecting ring and the first connecting ring, a strip-shaped stirring rod is fixedly connected to the outer wall of the chain ring at equal intervals, and a first magnetic block is fixedly connected to the end of the stirring rod; The material conveying pipe is provided with a mounting portion, and second magnetic blocks are evenly spaced on the mounting portion. The second magnetic blocks are magnetically matched with the first magnetic blocks. When the second magnetic blocks are attracted to the first magnetic blocks, the first magnetic block can drive the chain ring to move upward through the stirring rod. The inner wall of the discharge hopper is located on the abutment fillet and is obliquely fixedly connected with a guide rod.

[0005] In some embodiments, the push piece is a circular sheet structure, the side wall of the push piece can abut against the inner wall of the material conveying pipe and the material discharging pipe, and a sliding notch is provided at the bottom of the push piece.

[0006] In some embodiments, the inner cavity of the discharge pipe is connected to the inner cavity of the discharge hopper, and the discharge hopper is a bucket-shaped structure. The upper part of the outer wall of the discharge hopper is fixedly connected with mounting plates on both sides, and the mounting plates are fixedly connected with a sleeve hoop ring by bolts, and the sleeve hoop ring is sleeved with the discharge pipe.

[0007] In some embodiments, an embedding hole is opened at the center of the push piece, 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 push piece, 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.

[0008] In some embodiments, a sliding groove is provided on the push piece, a sliding plate is slidably connected inside the sliding notch, an auxiliary sliding rod and a sliding rack are fixedly connected to the upper part of the sliding plate, and the auxiliary sliding rod and the sliding rack are slidably connected to the push piece through the sliding groove.

[0009] In some embodiments, the axes of the first rotating column and the second rotating column coincide with the axes of the pusher pieces, the chain ring is a ring structure, and the chain ring is connected between two adjacent pusher pieces through the second connecting ring and the first connecting ring.

[0010] In some embodiments, a rotating groove is opened in the middle of the push piece, the inner cavity of the rotating groove is connected to the inner cavity of the sliding groove, and the upper end of the sliding rack is fixedly connected with an abutment end, and the abutment end always slides inside the sliding groove.

[0011] In some embodiments, the second rotating column is located in the inner position of the rotating groove and is rotatably connected to a rotating wheel. The rotating wheel is designed with rotating teeth. There are six rotating teeth. The angle between every two adjacent rotating teeth is fifteen degrees. The sliding rack is provided with an embedded tooth groove, and the sliding rack is meshed with the rotating teeth through the embedded tooth groove.

[0012] In some embodiments, there are two guide rods 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. The thickness of the sliding plate is the same as the depth of the sliding notch.

[0013] In some embodiments, an abutment portion is fixedly connected to the inner wall of the rotating groove, and the abutment portion can abut against the lowest rotating tooth.

[0014] The present invention has at least the following beneficial effects: 1. When the push piece drives the PVDF powder inside the powder collection structure to move inside the conveying pipe, the second magnetic block can drive the chain ring to lift through the first magnetic block, which can avoid friction between the chain ring and the inner wall of the conveying pipe, so that the chain ring drives the push piece to move stably inside the conveying pipe, and can also avoid friction damage to the chain ring.

[0015] 2. When various raw materials are transported inside the conveying pipe, the second magnetic block drives the chain ring to rise inside the conveying pipe through the first magnetic block, and the stirring rod can drive the PVDF powder inside the conveying pipe to stir, so that the PVDF powder and various raw materials inside the conveying pipe can be quickly mixed.

[0016] 3. When the push plate drives the PVDF powder to move to the top of the discharge hopper, the sliding plate can move downward under the action of gravity, and 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 ring, so that the PVDF powder around the chain ring and the push plate can quickly fall into the inside of the discharge hopper.

[0017] 4. Since there are two guide rods on the abutting fillet, 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, which causes the PVDF powder around the sliding plate to experience two shocks and pulls, thereby achieving rapid separation of the PVDF powder around the sliding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection between the material pushing piece and the material discharging pipe in the present invention; Figure 3It is a schematic diagram of the connection between the guide rod and the abutment fillet in the present invention; Figure 4 Schematic diagram of the distribution of chain rings and pusher pieces in the present invention; Figure 5 It is a schematic diagram of the connection between the stirring rod and the chain ring in the present invention; Figure 6 It is a schematic diagram of the distribution of the auxiliary sliding rod and the sliding rack in the present invention; Figure 7 It is a schematic diagram of the connection between the second rotating column and the pushing piece in the present invention; Figure 8 It is a schematic diagram of the connection between the sliding rack and the push piece in the present invention; Fig. 9 It is a schematic diagram of the connection between the second magnetic block and the material conveying pipe in the present invention; Fig.10 It is a connection diagram of the discharge hopper and the discharge pipe in the present invention.

[0019] In the figure: 1. powder collecting structure; 2. feeding pipe; 3. discharging pipe; 4. discharging hopper; 5. guide fillet; 6. abutting fillet; 7. guide rod; 8. chain link; 9. pushing piece; 10. sleeve hoop 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 sliding rod; 24. embedded hole; 25. abutting part; 26. abutting end; 27. sliding groove; 28. rotating groove; 29. ​​mounting part; 30. second magnetic block; 31. mounting plate; 32. first magnetic block; 33. driving structure. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-10 , the present invention provides a technical solution: A feeding device suitable for PVDF powder production includes 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. The powder collecting structure 1 is a structure for collecting PVDF powder in the prior art, and can transport the PVDF powder to the inside of the feeding pipe 2. The driving structure 33 is a structure for driving a chain structure in the prior art, and the driving structure 33 can drive the chain structure to shuttle inside the feeding pipe 2. The device also includes: A discharge pipe 3, which is connected to the discharge end of the feed pipe 2, and a 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 feed pipe 2 to be transported to the inside of the discharge hopper 4. A guide fillet 5 is provided on the inner wall of the discharge hopper 4 near the feed pipe 2, and an abutment fillet 6 is provided on the inner wall of the discharge hopper 4 near the drive structure 33. A push piece 9 slides in the inner cavity formed by the discharge pipe 3 and the feed pipe 2, and a sliding plate 14 slides on the push piece 9. The guide fillet 5 and the abutment fillet 6 are the parts where the sliding plate 14 abuts against the discharge hopper 4. When the sliding plate 14 abuts against the abutment fillet 6, the sliding plate 14 can be slowly moved down on the sliding notch 15, and when the sliding plate 14 abuts against the guide fillet 5, the sliding plate 14 can be slowly moved up on the sliding notch 15; Pushing pieces 9 are evenly spaced inside the cavity formed by the feeding pipe 2 and the discharging pipe 3. The pushing pieces 9 are circular sheet structures, which can drive the PVDF powder in the inner cavity of the feeding pipe 2 and the discharging pipe 3 to move. A second connecting ring 19 is distributed on one side of the pushing piece 9, and a first connecting ring 12 is distributed on the other side of the pushing piece 9. An annular chain ring 8 runs through the second connecting ring 19 and the first connecting ring 12. The chain ring 8 can drive two adjacent pushing pieces 9 to move through 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 ring 8 at equal intervals. When the chain ring 8 moves, the stirring rod 11 can stir the PVDF powder in the feeding pipe 2 and the discharging pipe 3. The stirring rod 11 The end is fixedly connected with a first magnetic block 32, and the push piece 9 is a circular sheet structure. The side wall of the push piece 9 can abut against the inner wall of the feeding pipe 2 and the discharge pipe 3, so that the push piece 9 can drive the PVDF powder to move. A sliding notch 15 is provided at the lower part of the push piece 9, and a sliding groove 27 is provided on the push piece 9. The sliding notch 15 is slidably connected with a sliding plate 14 inside the sliding notch 15, and an auxiliary sliding rod 23 and a sliding rack 16 are fixedly connected to the upper part of the sliding plate 14. The auxiliary sliding rod 23 and the sliding rack 16 are slidably connected with the push piece 9 through the sliding groove 27. The sliding plate 14 can slide on the push piece 9 through the auxiliary sliding rod 23 and the sliding rack 16, so that the PVDF powder around the push piece 9 can fall into the inside of the discharge hopper 4. During actual use, the driving structure 33 can drive the position of the chain ring 8 to move. At this time, the chain ring 8 can drive the pushing piece 9 to move inside the feeding pipe 2 and the discharge pipe 3, so that the pushing piece 9 can drive the PVDF powder to move inside the feeding pipe 2 and the discharge pipe 3. When the chain ring 8 is subjected to vibration, the chain ring 8 can drive the stirring rod 11 to move, so that the chain ring 8 can drive the stirring rod 11 to stir the PVDF powder in the feeding pipe 2 and the discharge pipe 3, which can be beneficial to the mixing of various materials with the PVDF powder, and can also prevent the PVDF powder from adhering to the inner wall of the feeding pipe 2 and the discharge pipe 3. The shape of the stirring rod 11 can be set according to actual conditions. Since the sliding plate 14 can slide inside the sliding notch 15, when the pushing piece 9 moves to the top of the discharge hopper 4, the sliding plate 14 can move downward, so that the PVDF powder around the pushing piece 9 and the chain ring 8 can fall into the sliding plate 14, avoiding the PVDF powder from adhering to the pushing piece 9 and the chain ring 8.

[0022] Example 2: Please refer to Figure 1-10 , the present invention provides a technical solution: The material conveying pipe 2 is provided with a mounting portion 29, on which second magnetic blocks 30 are evenly spaced, and there is a gap between every two adjacent second magnetic blocks 30. The second magnetic block 30 and the first magnetic block 32 are magnetically matched. When the second magnetic block 30 is adjacent to the first magnetic block 32, the second magnetic block 30 can attract the first magnetic block 32 to move upward, so that the position of the chain link 8 can be lifted. The inner wall of the discharge hopper 4 is located on the abutment fillet 6 and is obliquely fixedly connected with a guide rod 7. The guide rod 7 is obliquely arranged on the inner wall of the abutment fillet 6. When the sliding plate 14 slides on the guide rod 7, the use position of the sliding plate 14 can be lifted; When the chain link 8 drives the pushing piece 9 to move inside the feeding pipe 2 and the discharge pipe 3, the pushing piece 9 can drive the PVDF powder to move. Since the feeding 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 lift through the stirring rod 11, so as to avoid the friction between the chain link 8 and the inner wall of the feeding pipe 2 and the discharge 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 use position of the chain link 8 will move down, and at this time, the chain link 8 can drive the stirring rod 11 to stir the PVDF powder.

[0023] Example 3: Please refer to Figure 1-10 , the present invention provides a technical solution: The inner cavity of the discharge pipe fitting 3 is connected with the inner cavity of the discharge hopper 4. The discharge hopper 4 is a bucket-shaped structure. The discharge pipe fitting 3 can move the PVDF powder inside the feeding pipe fitting 2 to the inside of the discharge hopper 4. The upper part of the outer wall of the discharge hopper 4 is fixedly connected with a mounting plate 31 on both sides. The mounting plate 31 is fixedly connected with a sleeve hoop ring 10 by bolts. The sleeve hoop ring 10 is sleeved with the discharge pipe fitting 3, so that the discharge pipe fitting 3 and the discharge hopper 4 can be firmly connected.

[0024] An embedding hole 24 is provided at the center of the push piece 9, and the first rotating column 13 and the second rotating column 17 are inserted and fixed inside the embedding hole 24. The first rotating column 13 is fixedly connected to the first rotating ring 18, and the second rotating column 17 is fixedly connected to the second rotating ring 20. The first rotating ring 18 and the second rotating ring 20 are rotatably connected to the push piece 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 push piece 9 through the second rotating ring 20, and the first rotating column 13 can rotate on the push piece 9 through the first rotating ring 18. Since an annular chain ring 8 runs through the second connecting ring 19 and the first connecting ring 12, the chain ring 8 can rotate between two adjacent push pieces 9 through the second connecting ring 19 and the first connecting ring 12.

[0025] The axes of the first rotating column 13 and the second rotating column 17 coincide with the axes of the pusher pieces 9 . The chain ring 8 is a ring-shaped structure, and the chain ring 8 is connected between two adjacent pusher pieces 9 through the second connecting ring 19 and the first connecting ring 12 .

[0026] A rotating groove 28 is opened in the middle of the push piece 9, and the inner cavity of the rotating groove 28 is connected with the inner cavity of the sliding groove 27. The upper end of the sliding rack 16 is fixedly connected with an abutment end 26, and the abutment end 26 always slides inside the sliding groove 27. The abutment end 26 can limit the downward movement length of the sliding rack 16, so as to avoid the sliding rack 16 from separating from the push piece 9.

[0027] The second rotating column 17 is located at the inner position of the rotating groove 28 and is rotatably connected to a rotating wheel. The rotating wheel is designed with rotating teeth 21. There are six rotating teeth 21, and the angle between every two adjacent rotating teeth 21 is fifteen degrees. An embedded tooth groove 22 is opened on the sliding rack 16. The sliding rack 16 engages with the rotating teeth 21 through the embedded tooth groove 22. When the sliding plate 14 drives the sliding rack 16 to move downward, 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 ring 8.

[0028] There are two guide rods 7 connected to the abutting fillet 6. The lower part of the sliding plate 14 can abut the guide fillet 5, the abutting 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 up in the sliding notch 15.

[0029] The inner wall of the rotating groove 28 is fixedly connected with an abutment portion 25, which can abut against the lowest rotating tooth 21. When the abutment portion 25 abuts against the rotating tooth 21, the first connecting ring 12 drives the chain ring 8 to rotate at a limited angle, and the abutment end 26 is also distributed at the bottom of the sliding groove 27. When the push piece 9 enters the interior of the discharge hopper 4, the bottom of the sliding plate 14 will contact the guide fillet 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 ring 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 tooth 21, so that the first connecting ring 12 can drive the stirring rod 11 to flip forward through the chain ring 8, so that the powder around the sliding plate 14 and the chain ring 8 can quickly fall into the discharge hopper 4. Since the guide rod 7 is provided on the abutting fillet 6, when the lower part of the sliding plate 14 moves on the guide rod 7 The sliding plate 14 can move up 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, so that the first connecting ring 12 can drive the stirring rod 11 to flip reversely through the chain ring 8, so that the powder around the sliding plate 14 and the chain ring 8 can be stirred. The number of guide rods 7 can be set according to actual conditions and is not within the protection scope 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.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the 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), a powder collecting structure (1) connected to a feeding position of the feeding pipe (2), and a driving structure (33), characterized in that: Also includes: A discharge pipe (3), the discharge pipe (3) being connected to the discharge end of the feed pipe (2), a discharge hopper (4) being fixedly connected to the discharge end of the discharge pipe (3), a guide fillet (5) being provided on the inner wall of the discharge hopper (4) near the feed pipe (2), and an abutment fillet (6) being provided on the inner wall of the discharge hopper (4) near the drive structure (33); A material pushing piece (9), wherein the material pushing piece (9) is evenly spaced and distributed inside a cavity formed by a material conveying pipe (2) and a material discharging pipe (3), a second connecting ring (19) is distributed on one side of the material pushing piece (9), and a first connecting ring (12) is distributed on the other side of the material pushing piece (9), an annular chain link (8) passes through the second connecting ring (19) and the first connecting ring (12), and strip-shaped stirring rods (11) are fixedly connected to the outer wall of the chain link (8) at equal intervals, and a first magnetic block (32) is fixedly connected to the end of the stirring rod (11); The conveying pipe (2) is provided with a mounting portion (29), and second magnetic blocks (30) are evenly spaced on the mounting portion (29). The second magnetic blocks (30) are magnetically matched with the first magnetic blocks (32). When the second magnetic blocks (30) and the first magnetic blocks (32) are attracted to each other, 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 located on the abutment fillet (6) and is obliquely fixedly connected to a guide rod (7).

2. The feeding device for producing PVDF powder according to claim 1, characterized in that: The push piece (9) is a circular sheet structure, the side wall of the push piece (9) can abut against the inner walls of the material conveying pipe (2) and the material discharging pipe (3), and a sliding notch (15) is provided at the bottom of the push piece (9).

3. The feeding device for producing PVDF powder according to claim 1, characterized in that: The inner cavity of the discharge pipe (3) is in communication with the inner cavity of the discharge hopper (4); the discharge hopper (4) is a hopper-shaped structure; the upper part of the outer wall of the discharge hopper (4) is fixedly connected to mounting plates (31) at both sides; the mounting plates (31) are fixedly connected to a sleeve hoop ring (10) by bolts; the sleeve hoop ring (10) is sleeved with the discharge pipe (3).

4. The feeding device for producing PVDF powder according to claim 2, characterized in that: An embedding hole (24) is provided at the center of the push piece (9), and 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 push piece (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).

5. The feeding device for producing PVDF powder according to claim 3, characterized in that: The push piece (9) is provided with a sliding groove (27), the interior of the sliding notch (15) is slidably connected to a sliding plate (14), the upper part of the sliding plate (14) is fixedly connected to an auxiliary sliding rod (23) and a sliding rack (16), and the auxiliary sliding rod (23) and the sliding rack (16) are slidably connected to the push piece (9) via the sliding groove (27).

6. The feeding device for producing PVDF powder according to claim 4, characterized in that: The axes of the first rotating column (13) and the second rotating column (17) coincide with the axes of the pusher pieces (9); the chain ring (8) is a ring-shaped structure; the chain ring (8) is connected between two adjacent pusher pieces (9) via a second connecting ring (19) and a first connecting ring (12).

7. The feeding device for producing PVDF powder according to claim 5, characterized in that: A rotating groove (28) is provided in the middle of the push piece (9), the inner cavity of the rotating groove (28) is communicated with the inner cavity of the sliding groove (27), and the upper end of the sliding rack (16) is fixedly connected to an abutment end (26), and the abutment end (26) always slides inside the sliding groove (27).

8. The feeding device for producing PVDF powder according to claim 6, characterized in that: The second rotating column (17) is located in an inner position of the rotating groove (28) and is rotatably connected to a rotating wheel. The rotating wheel is provided with rotating teeth (21). There are six rotating teeth (21). The angle between every 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) via the embedded tooth groove (22).

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

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