Mixing equipment for aramid fiber and acrylic fiber composite pulp

Abstract

The utility model discloses mixing equipment for aramid fiber and acrylic fiber composite pulp. The mixing equipment comprises a base and a mixing equipment shell which is fixedly connected through a support frame, the top of the mixing equipment shell is fixedly provided with a rack, and two sides of the inner wall of the top of the rack are respectively and fixedly provided with a premixing cylinder for premixing the aramid-acrylic fiber composite pulp raw material. According to the utility model, not only can powder raw materials and liquid raw materials be respectively premixed, but also the premixed raw materials can be quickly subjected to overall solid-liquid stirring and mixing; the raw materials at the bottom can be spirally conveyed from bottom to top through the spiral mixing blades, so that the raw materials at the lower part and the raw materials at the upper part can be fully exchanged and mixed, the raw materials can be fully and uniformly mixed, the mixing quality of the aramid-acrylic fiber composite pulp can be guaranteed, the mixing time is greatly shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pulp mixing, in particular to a mixing device for aramid acrylic composite pulp. Background Art

[0002] As we all know, aramid acrylic composite pulp is often used to replace asbestos in friction sealing materials. It has both the high strength, high modulus and high temperature resistance of para-aramid and the excellent composite properties of polyacrylonitrile.

[0003] At present, in the preparation of aramid acrylic composite pulp, a mixing device is often needed to mix various raw materials. After searching the prior art CN102094353A, a continuous manufacturing method of para-aramid-acrylonitrile composite pulp-like fibers (hereinafter referred to as para-aramid-acrylonitrile composite pulp) is disclosed. Para-aramid chopped fibers, polyacrylonitrile chopped fibers with very rich internal microfibers and water are simultaneously input and pumped into a grinding device, and under the action of a high shear rate, they are continuously mixed, dispersed, and ground to form highly fibrillated para-aramid-acrylonitrile composite pulp-like fibers with uniform structure and rich surface hairiness. Prior art CN112940305B also discloses a method for preparing aramid pulp masterbatch and the obtained masterbatch and application, which can effectively improve the dispersibility of aramid pulp in rubber and improve the interface bonding performance of aramid pulp and rubber.

[0004] However, in the process of compounding aramid acrylic fiber composite pulp, the existing mixing equipment often adopts a simple stirring mechanism for mixing, which makes it difficult to fully mix various powder raw materials and slurry raw materials, and easily causes the aramid acrylic fiber composite pulp to be mixed unevenly, so that the quality of the aramid acrylic fiber composite pulp cannot be guaranteed; at the same time, there is also a problem that a long mixing time is required, thereby reducing the work efficiency. Therefore, the utility model proposes a mixing equipment for aramid acrylic fiber composite pulp. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a mixing device for aramid acrylic fiber composite pulp.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mixing device for aramid acrylic fiber composite pulp comprises a base and a mixing device shell fixedly connected via a support frame; a frame is fixedly installed on the top of the mixing device shell, and premixing cylinders for premixing aramid acrylic fiber composite pulp raw materials are fixedly installed on both sides of the inner wall of the top of the frame, and the bottom of the premixing cylinder is connected to the mixing device shell via a feeding pipe;

[0008] A stirring shaft is rotatably mounted on the inner side of the frame between the two premixing barrels, and the bottom end of the stirring shaft rotates through the mixing equipment housing and is fixedly mounted with a plurality of composite stirring paddles; a spiral mixing blade is also fixedly mounted on the stirring shaft below the composite stirring paddle; a door-type mounting frame is fixedly mounted on the top of the frame, and a driving motor is fixedly mounted on the top of the door-type mounting frame, and the output end of the driving motor rotates through the door-type mounting frame and is fixedly connected with a worm, and the top end of the stirring shaft rotates through the inner side of the door-type mounting frame and is fixedly connected with the bottom end of the worm;

[0009] A transmission shaft is rotatably installed in the door-type mounting frame, a worm gear is fixedly sleeved on the transmission shaft, and the worm is meshed with the worm gear; two ends of the transmission shaft are respectively rotated to penetrate the two sides of the door-type mounting frame and are fixedly connected to the first bevel gear, the bottom side of the first bevel gear is meshed with the second bevel gear, a rotating shaft is fixedly sleeved on the second bevel gear, and the bottom end of the rotating shaft is rotatably penetrated into the premixing barrel and a premixing stirring paddle is fixedly installed.

[0010] Furthermore, a feed port is provided on the top side of the premixing cylinder, and a sealing cover is provided on the feed port.

[0011] Furthermore, a discharge control valve is also provided on the discharge pipe; a discharge port is provided at the bottom of the mixing device shell, a discharge valve cover is provided at the bottom of the discharge port, and a collection box is placed below the discharge port.

[0012] Furthermore, a plurality of mixing oscillation springs are fixedly arranged on the top of the composite stirring paddle.

[0013] Furthermore, the spiral output direction of the spiral mixing blade is specifically arranged to be spirally output from bottom to top.

[0014] Furthermore, a controller is disposed on the front outer side of the mixing device housing, and the controller is electrically controlled and connected to the driving motor.

[0015] By adopting the above structure, the utility model has the following beneficial effects:

[0016] 1. In the utility model, the driving motor drives the worm to rotate, so that the powder raw materials and liquid raw materials in the two premixing barrels can be premixed respectively; when the worm rotates, the composite stirring paddle and the mixing oscillation spring can also stir and mix the premixed powder raw materials and liquid slurry raw materials as a whole, so that the solid and liquid raw materials are quickly mixed, thereby improving the mixing efficiency;

[0017] 2. In the utility model, since the output direction of the spiral mixing blade is set to be spirally output from bottom to top, the bottom raw material can be spirally transported from bottom to top through the spiral motion of the spiral mixing blade, so that the lower raw material and the upper raw material can be fully exchanged and mixed, so that the final aramid acrylic fiber composite pulp raw material is mixed more fully and evenly, which is conducive to ensuring the quality of the aramid acrylic fiber composite pulp mixing;

[0018] In summary, the mixing equipment for aramid acrylic composite pulp can not only premix the powder raw material and the liquid raw material separately, but also quickly stir and mix the premixed raw materials as a whole; and can also promote the spiral conveying of the bottom raw material from bottom to top through the spiral mixing blades, so that the lower raw material and the upper raw material can be fully exchanged and mixed, thereby ensuring that the raw materials are mixed more fully and evenly, which is beneficial to ensuring the quality of the aramid acrylic composite pulp mixing; and only one driving motor is needed to realize the premixing of the powder raw material and the liquid slurry raw material, the overall stirring and mixing of the premixed solid and liquid, and the spiral exchange mixing from bottom to top, which greatly reduces the mixing time and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a mixing device for aramid acrylic composite pulp proposed by the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the local structure in;

[0022] Figure 4 It is a schematic diagram of the structure among the worm, worm wheel and transmission shaft in the utility model.

[0023] In the figure: 1. base; 2. support frame; 3. mixing equipment shell; 301. discharge port; 4. premixing barrel; 401. discharge pipe; 402. discharge control valve; 403. feed port; 5. frame; 6. door-type mounting frame; 7. drive motor; 8. worm; 9. stirring shaft; 10. compound stirring paddle; 1001. mixing oscillation spring; 11. spiral mixing blade; 12. collecting box; 13. worm gear; 14. transmission shaft; 15. first bevel gear; 16. second bevel gear; 17. rotating shaft; 18. premixing stirring paddle; 19. controller. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-4 A mixing device for aramid acrylic fiber composite pulp comprises a base 1 and a mixing device housing 3 fixedly connected by a support frame 2; a frame 5 is fixedly installed on the top of the mixing device housing 3, and premixing cylinders 4 for premixing aramid acrylic fiber composite pulp raw materials are fixedly installed on both sides of the inner wall of the top of the frame 5, and the bottom of the premixing cylinder 4 is connected to the mixing device housing 3 through a feeding pipe 401;

[0026] A stirring shaft 9 is rotatably mounted on the inner side of a frame 5 located between two premixing barrels 4, and the bottom end of the stirring shaft 9 rotates and penetrates into the mixing device housing 3 and is fixedly mounted with a plurality of composite stirring paddles 10; a spiral mixing blade 11 is also fixedly arranged on the stirring shaft 9 located below the composite stirring paddles 10; a door-type mounting frame 6 is fixedly mounted on the top of the frame 5, and a driving motor 7 is fixedly mounted on the top of the door-type mounting frame 6, and the output end of the driving motor 7 rotates and penetrates into the door-type mounting frame 6 and is fixedly connected with a worm 8, and the top end of the stirring shaft 9 rotates and penetrates into the inner side of the door-type mounting frame 6 and is fixedly connected with the bottom end of the worm 8;

[0027] A transmission shaft 14 is rotatably installed in the door-type mounting frame 6, a worm gear 13 is fixedly sleeved on the transmission shaft 14, and the worm 8 is in transmission meshing engagement with the worm gear 13; both ends of the transmission shaft 14 are respectively rotatably penetrated into the two sides of the door-type mounting frame 6 and are fixedly connected with a first bevel gear 15, a second bevel gear 16 is meshed with the bottom side of the first bevel gear 15, a rotating shaft 17 is fixedly sleeved on the second bevel gear 16, and the bottom end of the rotating shaft 17 is rotatably penetrated into the premixing barrel 4 and a premixing stirring paddle 18 is fixedly installed.

[0028] In this embodiment, a feed port 403 is provided on the top side of the premixing barrel 4, and a sealing cover is provided on the feed port 403; a feed discharge control valve 402 is also provided on the feed discharge pipe 401; a discharge port 301 is provided at the bottom of the mixing equipment shell 3, and a discharge valve cover is provided at the bottom of the discharge port 301, and a collection box 12 is also placed below the discharge port 301.

[0029] In this embodiment, a plurality of mixing oscillation springs 1001 are fixedly arranged on the top of the compound stirring paddle 10; the spiral output direction of the spiral mixing blade 11 is specifically arranged to be spirally outputted from bottom to top.

[0030] A controller 19 is also disposed on the front outer side of the mixing device housing 3 , and the controller 19 is electrically controlled and connected to the driving motor 7 .

[0031] like Figure 1-4The mixing device of aramid acrylic composite pulp shown in the figure is used as follows: different powder raw materials and liquid raw materials in the aramid acrylic composite pulp raw materials are first respectively loaded into the premixing barrels 4 on both sides for premixing, that is, the driving motor 7 is driven to drive the worm 8 to rotate, and the worm 8 is also meshed with the worm wheel 13 to drive the transmission shaft 14 and the first bevel gear 15 to rotate. When the first bevel gear 15 rotates, it is meshed with the second bevel gear 16 to drive the rotating shaft 17 and the premixing stirring paddle 18 to rotate, so that the powder raw materials and liquid raw materials in the two premixing barrels 4 can be premixed respectively. After premixing, the discharge control valve 402 on the discharge pipe 401 is opened to discharge the premixed powder raw materials and liquid slurry raw materials into the mixing device housing 3 through the discharge pipe 401 respectively; at the same time, when the worm 8 rotates, it also drives the stirring shaft 9, the composite stirring paddle 10, the mixing oscillation spring 1001 and the spiral mixing blade 11 to rotate. The composite stirring paddle 10 and the mixing oscillation spring 1001 rotate, so that the premixed powder raw material and the liquid slurry raw material can be stirred and mixed as a whole through the rotation of the composite stirring paddle 10 and the mixing oscillation spring 1001, so that the solid and liquid raw materials can be quickly mixed, thereby improving the mixing efficiency; and because the output direction of the spiral mixing blade 11 is a spiral output setting from bottom to top, the bottom raw material can be spirally transported from bottom to top through the spiral motion of the spiral mixing blade 11, so that the lower raw material and the upper raw material can be fully exchanged and mixed, so that the final aramid acrylic fiber composite pulp raw material is mixed more fully and evenly, which is beneficial to ensuring the quality of the aramid acrylic fiber composite pulp mixing, and only one driving motor 7 is needed to realize the premixing of the powder raw material and the liquid slurry raw material, the overall stirring and mixing of the premixed solid and liquid, and the spiral exchange mixing from bottom to top, which greatly reduces the mixing time and improves the work efficiency.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mixing device for aramid acrylic composite pulp, comprising a base (1) and a mixing device housing (3) fixedly connected via a support frame (2), characterized in that: A frame (5) is fixedly mounted on the top of the mixing device housing (3), and premixing cylinders (4) for premixing aramid acrylic fiber composite pulp raw materials are respectively fixedly mounted on both sides of the inner wall of the top of the frame (5), and the bottom of the premixing cylinder (4) is connected to the inside of the mixing device housing (3) via a feed pipe (401); A stirring shaft (9) is rotatably mounted on the inner side of a frame (5) between two premixing barrels (4); the bottom end of the stirring shaft (9) is rotatably penetrated into a mixing device housing (3) and fixedly mounted with a plurality of composite stirring paddles (10); a spiral mixing blade (11) is also fixedly mounted on the stirring shaft (9) below the composite stirring paddles (10); a door-shaped mounting frame (6) is fixedly mounted on the top of the frame (5); a driving motor (7) is fixedly mounted on the top of the door-shaped mounting frame (6); an output end of the driving motor (7) is rotatably penetrated into the door-shaped mounting frame (6) and fixedly connected with a worm (8); and the top end of the stirring shaft (9) is rotatably penetrated into the inner side of the door-shaped mounting frame (6) and fixedly connected with the bottom end of the worm (8); A transmission shaft (14) is rotatably mounted in the door-shaped mounting frame (6), a worm gear (13) is fixedly sleeved on the transmission shaft (14), and the worm (8) is in transmission meshing engagement with the worm gear (13); two ends of the transmission shaft (14) are respectively rotatably penetrated into two sides of the door-shaped mounting frame (6) and are fixedly connected to a first bevel gear (15), a second bevel gear (16) is meshed on the bottom side of the first bevel gear (15), a rotating shaft (17) is fixedly sleeved on the second bevel gear (16), and the bottom end of the rotating shaft (17) is rotatably penetrated into the premixing barrel (4) and a premixing stirring paddle (18) is fixedly mounted thereon.

2. The mixing device for aramid acrylic fiber composite pulp according to claim 1, characterized in that: The top side of the premixing cylinder (4) is provided with a feed port (403), and a sealing cover is provided on the feed port (403).

3. The mixing device for aramid acrylic fiber composite pulp according to claim 1, characterized in that: The discharge pipe (401) is also provided with a discharge control valve (402); a discharge port (301) is provided at the bottom of the mixing device housing (3); a discharge valve cover is provided at the bottom of the discharge port (301); and a collection box (12) is placed below the discharge port (301).

4. The mixing device for aramid acrylic fiber composite pulp according to claim 1, characterized in that: A plurality of mixing oscillation springs (1001) are also fixedly arranged on the top of the composite stirring paddle (10).

5. The mixing device for aramid acrylic fiber composite pulp according to claim 1, characterized in that: The spiral output direction of the spiral mixing blade (11) is specifically arranged to be spirally output from bottom to top.

6. The mixing device for aramid acrylic fiber composite pulp according to claim 1, characterized in that: A controller (19) is also provided on the front outer side of the mixing device housing (3), and the controller (19) is electrically controlled and connected to the driving motor (7).

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