Particle stirring and storing device for polyether-ether-ketone plate preparation

Abstract

The invention is applicable to the technical field of high polymer material manufacturing, and provides a particle stirring and storing device for polyether-ether-ketone plate preparation, which comprises a stirring reaction module, a bidirectional stirring module and an ion storage module, in the structure of the bidirectional stirring module, a second stirring shaft is rotatably sleeved on the outer side of a first stirring shaft; the first stirring shaft can drive the second stirring shaft to rotate in the opposite direction by utilizing the double-shaft reverse connection mechanism, and the first stirring shaft and the second stirring shaft are respectively provided with the inner stirring paddle and the outer stirring plate, so that the inner stirring paddle and the outer stirring plate can repeatedly stir the polyetherketoneketone particles in the opposite direction, the agglomeration probability is reduced, and the stirring efficiency is improved. Meanwhile, the inner side wall of the stirring reaction tank can be continuously cleaned and scraped by barrel-shaped side wall scraping strips on the outer sides of the outer side stirring plates and conical side wall scraping strips on the outer sides of the bottom stirring paddles, so that the polyether ketone ketone particles are prevented from being adhered to the inner side wall of the stirring reaction tank.

Description

Technical Field

[0001] The invention is applicable to the technical field of polymer material manufacturing and provides a particle stirring and storage device for preparing a polyetheretherketone plate. Background Art

[0002] Polyetheretherketone (PEEK) is an aromatic crystalline thermoplastic polymer material with many advantages such as high mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance, and good electrical properties. It is a high-performance engineering plastic with great use value and is used in various high-demand occasions. In the industrial chain of polyetheretherketone, polyetheretherketone particles are first produced by chemical synthesis, and then the polyetheretherketone particles are processed into the required shape by heating extrusion and other methods. Among them, polyetheretherketone sheet is one of the widely used basic sheets. In the production of polyetheretherketone particles for sheet preparation, stirring equipment is required to mix and cool the polyetheretherketone particles. However, since the viscosity of polyetheretherketone is very high at high temperature, the polyetheretherketone particles are easy to agglomerate during the stirring process of a conventional agitator. At the same time, after a long period of stirring, a large number of particles will stick to the inner wall of the stirring tank, which is very troublesome to clean up, seriously affecting production efficiency. Summary of the invention

[0003] To this end, the present invention provides a particle stirring and storage device for preparing polyetheretherketone board materials, wherein a second stirring shaft is rotatably sleeved on the outside of a first stirring shaft, and a double-axis reverse connection mechanism is utilized to enable the first stirring shaft to drive the second stirring shaft to rotate in the opposite direction, and the first stirring shaft and the second stirring shaft are respectively provided with an inner stirring paddle and an outer stirring plate, so that the inner stirring paddle and the outer stirring plate can repeatedly stir the polyetherketoneketone particles in opposite directions to reduce the probability of agglomeration, and at the same time, the barrel-shaped side wall scraper on the outside of the outer stirring plate and the conical side wall scraper on the outside of the bottom stirring paddle can continuously scrape the inner wall of the stirring reaction tank to prevent the polyetherketoneketone particles from sticking to the inner wall of the stirring reaction tank.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a particle stirring and storage device for preparing polyetheretherketone board, comprising:

[0005] A stirring reaction module, used for mixing and stirring polyetheretherketone particles, including a stirring reaction tank;

[0006] A bidirectional stirring module, comprising a stirring drive unit and a double-axis reverse connection mechanism, wherein the stirring drive unit is drivingly connected to a first stirring shaft, a second stirring shaft is rotatably sleeved on the outer side of the first stirring shaft near the stirring drive unit, the double-axis reverse connection mechanism comprises a double-axis connection bracket, the double-axis connection bracket is rotatably provided with a first driving bevel gear, a connecting bevel gear and a second driving bevel gear, the connecting bevel gear is respectively meshed and connected with the first driving bevel gear and the second driving bevel gear, the first driving bevel gear and the second driving bevel gear are coaxially arranged, the first driving bevel gear is coaxially fixedly connected to the first stirring shaft, the second driving bevel gear is coaxially fixedly connected to the second stirring shaft, a plurality of inner stirring paddles are fixedly arranged from top to bottom on the first stirring shaft, a plurality of outer stirring plates are fixedly arranged in an annular shape on the outer side of the second stirring shaft, the inner stirring paddles and the outer stirring plates are both arranged in a stirring reaction tank, and the plurality of inner stirring paddles are arranged in a space surrounded by the plurality of outer stirring plates;

[0007] The particle storage module comprises a particle storage tank for storing polyetheretherketone particles. The particle storage tank is connected to a negative pressure feeder, and the negative pressure feeder is connected to the stirring reaction tank through a particle transfer pipeline.

[0008] Furthermore, an electric three-way valve is provided on the particle transfer pipeline, two of the three ports of the electric three-way valve are respectively connected to the stirring reaction tank and the negative pressure feeder, and the remaining port is connected to the pressure relief unloading pipeline.

[0009] Furthermore, the stirred reaction tank is divided into two parts connected in an upper and lower manner, the upper part is a barrel-shaped reaction bin, and the lower part is a conical aggregate bin. The lower part of the first stirring shaft is fixedly connected to a bottom stirring paddle, and the bottom stirring paddle is arranged in the conical aggregate bin. A stirring tank discharge valve is arranged at the bottom of the conical aggregate bin.

[0010] Furthermore, the bottom stirring paddle includes a plurality of bottom stirring blades arranged in a circular array, and a conical side wall scraper is provided on the side of the bottom stirring blade close to the inner wall of the conical aggregate bin, and the conical side wall scraper is in contact with the inner wall of the conical aggregate bin, and the outer stirring plate is provided on the side of the inner wall of the barrel-shaped reaction bin, and the barrel-shaped side wall scraper is in contact with the inner wall of the barrel-shaped reaction bin.

[0011] Furthermore, the conical side wall scraper and the barrel side wall scraper are both made of rubber material, and the surfaces of the first stirring shaft, the second stirring shaft, the inner stirring paddle, the outer stirring plate, the bottom stirring paddle, the conical side wall scraper and the barrel side wall scraper are all provided with a polytetrafluoroethylene coating.

[0012] Furthermore, the stirring drive unit includes a driving motor and a reducer, the driving motor is drivingly connected to the reducer, and the reducer is drivingly connected to the first stirring shaft.

[0013] Furthermore, the inner stirring paddle includes at least two cross-arranged blades.

[0014] Furthermore, a hot air dryer is provided between the particle storage tank and the negative pressure feeder.

[0015] Furthermore, the lower portion of the particle storage tank is in a conical barrel shape, a particle discharge valve is provided at the lower end of the particle storage tank, and a port of the particle discharge valve is connected to a particle discharge pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, a second stirring shaft is rotatably sleeved on the outside of the first stirring shaft, and an inner stirring paddle and an outer stirring plate are respectively arranged on the first stirring shaft and the second stirring shaft, and a double-shaft reverse connection mechanism is arranged between the first stirring shaft and the second stirring shaft, so that the first stirring shaft can drive the second stirring shaft to rotate in the opposite direction while rotating, so that the inner stirring paddle and the outer stirring plate can mix and stir the polyetherketoneketone particles in different directions, thereby avoiding the agglomeration of the polyetherketoneketone particles to the greatest extent and improving the mixing and stirring effect;

[0018] 2. A barrel-shaped side wall scraper is arranged on the outside of the outer stirring plate, and a conical side wall scraper is arranged on the outside of the bottom stirring paddle. The barrel-shaped side wall scraper and the conical side wall scraper are both made of rubber material and are against the inner wall of the stirring reaction tank. In this way, the inner wall of the stirring reaction tank can be continuously scraped during the stirring process to prevent the polyetherketoneketone particles from sticking to the inner wall of the stirring reaction tank;

[0019] 3. The polyetherketoneketone granules are sucked and transferred from the stirred reaction tank to the particle storage tank by a negative pressure feeder. The continuous negative pressure suction of the negative pressure feeder can prevent the polyetherketoneketone granules from remaining in the particle transfer pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural front view of a particle stirring and storage device for preparing a polyetheretherketone board mentioned in the present invention;

[0021] Figure 2 for Figure 1 A schematic structural diagram of another angle of a particle stirring and storage device for preparing a polyetheretherketone board;

[0022] Figure 3 It is a structural schematic diagram of the bidirectional stirring module mentioned in the present invention;

[0023] Figure 4 It is a schematic diagram of the assembly structure between the double-shaft reverse connection mechanism and the first stirring shaft and the second stirring shaft in the bidirectional stirring module mentioned in the present invention.

[0024] In the figure:

[0025] 100, stirring reaction module, 110, stirring reaction tank, 120, stirring tank discharge valve;

[0026] 200, bidirectional stirring module, 210, driving motor, 220, reducer, 230, double-axis reverse connection mechanism, 231, double-axis connection bracket, 232, first driving bevel gear, 233, second driving bevel gear, 234, connecting bevel gear, 240, first stirring shaft, 250, second stirring shaft, 260, inner stirring paddle, 270, outer stirring plate, 280, bottom stirring paddle;

[0027] 300. Negative pressure feeder;

[0028] 400, particle storage module, 410, particle storage tank, 420, particle discharge valve, 430, particle discharge pipeline;

[0029] 500, electric three-way valve;

[0030] 600, particle transfer pipeline;

[0031] 700, pressure relief unloading pipeline;

[0032] 800. Hot air dryer. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] For example, see the attached Figure 1 , Attachment Figure 2 The present invention provides a particle stirring and storage device for preparing a polyetheretherketone board, comprising a stirring reaction module 100, a two-way stirring module 200 and a particle storage module 400, wherein the stirring reaction module 100 comprises a stirring reaction tank 110, which is mainly used as a reaction container for mixing and stirring polyetheretherketone particles, and the stirring reaction tank 110 is divided into two parts connected to each other, the upper half is a barrel-shaped reaction bin, and the lower half is a conical aggregate bin. The conical aggregate bin in the lower half is mainly for the convenience of discharging. A stirring tank discharge valve 120 is provided at the bottom of the conical aggregate bin to control the discharge of polyetheretherketone particles in the stirring reaction tank 110. The two-way stirring module 200 is as shown in the attached Figure 3As shown, it includes a stirring drive unit and a double-axis reverse connection mechanism 230, the stirring drive unit is drivingly connected to a first stirring shaft 240, the stirring drive unit includes a driving motor 210 and a reducer 220, the driving motor 210 is drivingly connected to the reducer 220, the reducer 220 is drivingly connected to the first stirring shaft 240, the driving motor 210 can drive the first stirring shaft 240 to rotate, the outer side of the first stirring shaft 240 near the stirring drive unit is rotatably sleeved with a second stirring shaft 250, and the first stirring shaft 240 can drive the second stirring shaft 250 to rotate through the double-axis reverse connection mechanism 230 while the first stirring shaft 240 rotates, as shown in the attached Figure 4As shown, the double-axis reverse connection mechanism 230 includes a double-axis connection bracket 231, which is fixedly arranged at a fixed position such as a device bracket, and a first driving bevel gear 232, a connecting bevel gear 234 and a second driving bevel gear 233 are rotatably arranged on the double-axis connection bracket 231, and the connecting bevel gear 234 is respectively meshed and connected with the first driving bevel gear 232 and the second driving bevel gear 233, and the first driving bevel gear 232 and the second driving bevel gear 233 are coaxially arranged. In this meshing mode, when the three gears rotate, the first driving bevel gear 232 and the second driving bevel gear 233 rotate in opposite directions, wherein the first driving bevel gear 232 is coaxially fixedly connected to the first stirring shaft 240, and the second driving bevel gear 233 is coaxially connected to the second stirring shaft 240. The stirring shaft 250 is coaxially fixedly connected. In this way, when the first stirring shaft 240 rotates, the power can be transmitted to the second stirring shaft 250 through the connection relationship between the first driving bevel gear 232, the connecting bevel gear 234 and the second driving bevel gear 233. At the same time, since the first driving bevel gear 232 and the second driving bevel gear 233 rotate in opposite directions, the rotation directions between the first stirring shaft 240 and the second stirring shaft 250 are also opposite. The first stirring shaft 240 is fixedly provided with a plurality of inner stirring paddles 260 from top to bottom, each inner stirring paddle 260 includes at least two cross-arranged blades, and the cross-arrangement of the blades can improve the mixing efficiency. At the same time, the bottom stirring paddle 28 is fixedly connected to the lower part of the first stirring shaft 240. 0, the inner stirring paddle 260 is arranged in the barrel-shaped reaction bin, the bottom stirring paddle 280 is arranged in the conical collection bin, the bottom stirring paddle 280 includes a plurality of bottom stirring blades arranged in a circular array, and the outer side of the bottom stirring blade is inclined, so that it can be adapted to the inner wall of the conical collection bin as much as possible, and the bottom stirring paddle 280 is mainly used to prevent the polyetherketoneketone particles in the conical collection bin from agglomerating after being stationary for a long time. The outer side of the second stirring shaft 250 is fixedly provided with a plurality of outer stirring plates 270 in a circular shape, the inner stirring paddle 260 and the outer stirring plate 270 are both arranged in the stirring reaction tank 110, and there is a columnar space in the middle position surrounded by the plurality of outer stirring plates 270, and the front plurality of inner stirring paddles 260 are all arranged in a columnar space surrounded by the plurality of outer stirring plates In the columnar space surrounded by 270, when the two-way stirring module 200 is running, the inner stirring paddle 260 and the outer stirring plate 270 can stir the polyetherketoneketone granules from multiple directions inside and outside, which greatly improves the stirring efficiency and effectively prevents the polyetherketoneketone granules from agglomerating. In order to prevent the polyetherketoneketone granules from adhering to the inner wall of the stirring reaction tank 110, a barrel-shaped side wall scraper is arranged on the side of the outer stirring plate 270 close to the inner wall of the barrel-shaped reaction bin, and a conical side wall scraper is arranged on the side of the bottom stirring plate close to the inner wall of the conical aggregate bin. The conical side wall scraper and the barrel side wall scraper are both made of rubber material. In actual design, the barrel side wall scraper is in contact with the inner wall of the barrel-shaped reaction bin, and the conical side wall scraper is in contact with the inner wall of the conical aggregate bin.In this way, the outer stirring plate 270 and the bottom stirring blade can continuously scrape the inner wall of the stirring reaction tank 110 while performing the stirring operation, so as to prevent the polyetherketoneketone particles from adhering to the inner wall of the stirring reaction tank 110, and the rubber material is mainly used to prevent damage to the inner wall surface of the stirring reaction tank 110 (the wear of the inner wall of the stirring reaction tank 110 will not only reduce the service life but also contaminate the polyetherketoneketone particles);

[0035] The particle storage module 400 mainly includes a particle storage tank 410 for storing polyetheretherketone particles. The particle storage tank 410 is connected to a negative pressure feeder 300. The negative pressure feeder 300 is connected to the stirred reaction tank 110 through a particle transfer pipeline 600. The negative pressure feeder 300 is a prior art. It can generate adsorption force by using the negative pressure principle to suck the polyetheretherketone particles from the lower end of the stirred reaction tank 110 and transfer them to the particle storage tank 410. In a more optimal solution, a hot air dryer 800 is further provided between the particle storage tank 410 and the negative pressure feeder 300. The hot air dryer 800 can not only further ensure the drying of the polyetheretherketone particles, but also can further disperse the polyetheretherketone particles in the process of hot air blowing to the polyetheretherketone particles, further avoid agglomeration, and improve particle transfer. An electric three-way valve 500 is arranged on the transfer pipeline 600. Two of the three ports of the electric three-way valve 500 are connected to the stirred reaction tank 110 and the negative pressure loader 300 respectively, and the remaining port is connected to the pressure relief discharge pipeline 700. The pressure relief discharge pipeline 700 is mainly used for emptying and depressurizing the pressure from the pressure relief discharge pipeline 700 when a connection passage of the particle transfer pipeline 600 is blocked somewhere to avoid accidents. The lower part of the particle storage tank 410 is a conical barrel shape. The conical barrel shape is mainly for the convenience of material dropping to avoid the accumulation of polyetheretherketone particles at the bottom of the particle storage tank 410. A particle discharge valve 420 is arranged at the lower end of the particle storage tank 410. The port of the particle discharge valve 420 is connected to the particle discharge pipeline 430, and the particle discharge pipeline 430 can be connected to subsequent process equipment.

[0036] In a more optimized solution, the conical side wall scraper and the barrel side wall scraper are both made of rubber material, and the surfaces of the first stirring shaft 240, the second stirring shaft 250, the inner stirring paddle 260, the outer stirring plate 270, the bottom stirring paddle 280, the conical side wall scraper and the barrel side wall scraper are all provided with a polytetrafluoroethylene coating. The polytetrafluoroethylene coating has extremely high chemical stability and can withstand almost all commonly used highly corrosive and hydroxide chemicals. At the same time, it is almost insoluble in any solvent, has strong tolerance to strong acids, strong alkalis, aqua regia and various organic solvents, and also has excellent non-stickiness and high temperature stability, which is perfectly adapted to the usage scenarios of the present invention.

[0037] In summary, the stirring and storage device in this embodiment optimizes the stirring module according to the properties of the polyetherketoneketone particles. The stirring effect is improved by setting multiple stirring paddles with different positions, shapes and rotation directions to prevent the particles from clumping and sticking to the wall, thereby greatly improving production efficiency and product quality.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the above technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A particle stirring and storage device for preparing polyetheretherketone board, characterized in that: include: A stirring reaction module (100) includes a stirring reaction tank (110); A bidirectional stirring module (200) comprises a stirring drive unit and a double-axis reverse connection mechanism (230), wherein the stirring drive unit is drivingly connected to a first stirring shaft (240), a second stirring shaft (250) is rotatably sleeved on the outer side of the first stirring shaft (240) near the stirring drive unit, and the double-axis reverse connection mechanism (230) comprises a double-axis connection bracket (231), wherein the double-axis connection bracket (231) is rotatably provided with a first driving bevel gear (232), a connecting bevel gear (234) and a second driving bevel gear (233), wherein the connecting bevel gear (234) is respectively meshed and connected with the first driving bevel gear (232) and the second driving bevel gear (233), and the first driving bevel gear (232) and the second driving bevel gear (233) are respectively meshed and connected, ... The movable bevel gear (232) and the second driving bevel gear (233) are coaxially arranged, the first driving bevel gear (232) is coaxially fixedly connected to the first stirring shaft (240), the second driving bevel gear (233) is coaxially fixedly connected to the second stirring shaft (250), the first stirring shaft (240) is fixedly provided with a plurality of inner stirring paddles (260) from top to bottom, the outer side of the second stirring shaft (250) is fixedly provided with a plurality of outer stirring plates (270) in a ring shape, the inner stirring paddles (260) and the outer stirring plates (270) are both arranged in a stirring reaction tank (110), and the plurality of inner stirring paddles (260) are arranged in a space surrounded by the plurality of outer stirring plates (270); The particle storage module (400) comprises a particle storage tank (410) for storing polyetheretherketone particles. The particle storage tank (410) is connected to a negative pressure feeder (300). The negative pressure feeder (300) is connected to a stirred reaction tank (110) via a particle transfer pipeline (600).

2. A particle stirring and storage device for preparing polyetheretherketone board according to claim 1, characterized in that: The particle transfer pipeline (600) is provided with an electric three-way valve (500), two of the three ports of the electric three-way valve (500) are respectively connected to the stirring reaction tank (110) and the negative pressure feeder (300), and the remaining port is connected to the pressure relief discharge pipeline (700).

3. A particle stirring and storage device for preparing polyetheretherketone board according to claim 2, characterized in that: The stirring reaction tank (110) is divided into two parts connected to each other, the upper part is a barrel-shaped reaction bin, and the lower part is a conical collection bin. The lower part of the first stirring shaft (240) is fixedly connected to a bottom stirring paddle (280), and the bottom stirring paddle (280) is arranged in the conical collection bin. A stirring tank discharge valve (120) is arranged at the bottom of the conical collection bin.

4. A particle stirring and storage device for preparing polyetheretherketone board according to claim 3, characterized in that: The bottom stirring paddle (280) includes a plurality of bottom stirring blades arranged in a circular array, and a conical side wall scraper is arranged on the side of the bottom stirring blade close to the inner wall of the conical material collection bin, and the conical side wall scraper abuts against the inner wall of the conical material collection bin. The outer stirring plate (270) is provided with a barrel-shaped side wall scraper on the side of the inner wall of the barrel-shaped reaction bin, and the barrel-shaped side wall scraper abuts against the inner wall of the barrel-shaped reaction bin.

5. A particle stirring and storage device for preparing polyetheretherketone board according to claim 4, characterized in that: The conical side wall scraper and the barrel-shaped side wall scraper are both made of rubber material, and the surfaces of the stirring reaction tank (110), the first stirring shaft (240), the second stirring shaft (250), the inner stirring paddle (260), the outer stirring plate (270), the bottom stirring paddle (280), the conical side wall scraper and the barrel-shaped side wall scraper are all provided with a polytetrafluoroethylene coating.

6. A particle stirring and storage device for preparing polyetheretherketone board according to claim 1, characterized in that: The stirring drive unit comprises a driving motor (210) and a reducer (220), wherein the driving motor (210) is drivingly connected to the reducer (220), and the reducer (220) is drivingly connected to the first stirring shaft (240).

7. A particle stirring and storage device for preparing polyetheretherketone board according to claim 1, characterized in that: The inner stirring paddle (260) includes at least two cross-arranged paddle blades.

8. The particle stirring and storage device for preparing polyetheretherketone board according to claim 1, characterized in that: A hot air dryer (800) is provided between the particle storage tank (410) and the negative pressure feeder (300).

9. A particle stirring and storage device for preparing polyetheretherketone board according to claim 1, characterized in that: The lower portion of the particle storage tank (410) is in a conical barrel shape, and a particle discharge valve (420) is provided at the lower end of the particle storage tank (410), and a port of the particle discharge valve (420) is connected to a particle discharge pipe (430).

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