PTFE membrane raw material stirring device

Abstract

The utility model relates to the technical field of stirring devices, and discloses a PTFE (Polytetrafluoroethylene) film raw material stirring device which comprises a stirring tank, the stirring tank is provided with a powdering mechanism, the powdering mechanism comprises a dust suction pipe, a feeding pipe, an auger conveying structure for feeding dust into the feeding pipe, and a dust suction fan for feeding the dust into the auger conveying structure along the dust suction pipe, and the feeding pipe is provided with a self-sealing structure. By means of the technical scheme, the problem that in the related technology, liquid easily overflows the powder adding opening, and consequently the follow-up powder adding work is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of stirring device technology, and in particular to a PTFE membrane raw material stirring device. Background Technology

[0002] PTFE membrane raw material mixing device generally refers to a device used to mix PTFE powder, solvent and other additives.

[0003] Currently, to prevent powder from scattering due to the surrounding airflow when adding powder into the mixing device, a dust suction arm and an auger conveyor structure are usually used to complete the powder addition process.

[0004] However, during the liquid addition process, the opaque nature of the stirring device makes it difficult for operators to accurately judge the internal liquid level, leading to over-addition of liquid (solvent). Even with automated addition systems (using electronic devices such as level sensors), there is a risk of system malfunction causing over-addition. This results in the liquid submerging the end of the powder feeding pipe located inside the stirring device, making it easy for powder to stick to the feeding pipe or auger, affecting subsequent powder addition efficiency. Utility Model Content

[0005] The main purpose of this invention is to provide a PTFE membrane raw material stirring device, which aims to solve the problem in related technologies where liquid easily overflows the powder addition port, thus affecting the subsequent powder addition process.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A PTFE membrane raw material mixing device includes a mixing tank, the mixing tank being equipped with a powder feeding mechanism, the powder feeding mechanism including a dust extraction pipe, a feed pipe, an auger conveying structure for feeding dust into the feed pipe, and a dust extraction fan for feeding dust along the dust extraction pipe into the auger conveying structure, the feed pipe being equipped with a self-sealing structure.

[0008] Furthermore, the self-sealing structure includes a sealing float and an installation limiting frame, wherein the installation limiting frame is fixedly connected to the mixing tank, and the sealing float is slidably connected to the installation limiting frame.

[0009] Furthermore, the blocking float includes a blocking body and a sliding rod, wherein the blocking body has a conical structure.

[0010] Furthermore, the installation limiting frame includes a limiting ring, a plurality of first connecting rods, and a plurality of second connecting rods. The diameter of the sealing body is larger than the outer ring diameter of the limiting ring. The two ends of each first connecting rod are respectively fixedly connected to the mixing tank and each second connecting rod, and each second connecting rod is fixedly connected to the limiting ring.

[0011] Furthermore, each of the first connecting rods and each of the second connecting rods is a circular rod structure.

[0012] Furthermore, the sealing float also includes an expansion body, which is located at the end of the sliding rod away from the sealing body, and the outer ring diameter of the limiting ring is greater than or equal to the diameter of the expansion body.

[0013] Furthermore, the auger conveyor structure is located outside the mixing tank.

[0014] Furthermore, a transfer body is provided between the auger conveying structure and the dust extraction pipe, and a transfer cavity is provided inside the transfer body; the transfer body is provided with an observation window for observing its internal conditions.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The mixing tank of this utility model is equipped with a powder feeding mechanism, which mainly includes a dust extraction pipe, a feed pipe, an auger conveyor structure, and a dust extraction fan. The dust extraction fan is located between the auger conveyor structure and the dust extraction pipe, and the feed pipe is located between the auger conveyor structure and the mixing tank. That is, the operation of the dust extraction fan creates a negative pressure in the dust extraction pipe, thereby drawing dust into the dust extraction pipe. The dust enters the auger conveyor structure along the dust extraction pipe, and as the auger conveyor structure operates, it gradually enters the mixing tank along the feed pipe to complete the powder addition work.

[0017] Meanwhile, the feed pipe is equipped with a self-sealing structure, which is linked to the liquid level in the tank. As the liquid level in the mixing tank rises, the self-sealing structure will be activated to seal the feed pipe, thereby preventing liquid from entering the feed pipe and wetting it, or even wetting the auger conveyor structure (making the dust conveying path a humid environment). This prevents the conveyed dust from adhering to the feed pipe wall and the auger shaft, ensuring the efficiency of subsequent dust addition.

[0018] Specifically, the self-sealing structure in this utility model mainly includes a sealing float and an installation limiting frame. The installation limiting frame is fixedly installed inside the mixing tank, and the sealing float is slidably connected to the installation limiting frame and linked with the liquid level in the tank. That is, the sealing work of the feed pipe is completed by the movement of the sealing float. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of Example 1 or Example 2;

[0021] Figure 2 for Figure 1 A partial sectional view;

[0022] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the internal structure of Example 1 or Example 2;

[0024] Figure 5 This is a schematic diagram of the self-closing structure in Example 1 or Example 2.

[0025] Explanation of icon numbers:

[0026] 1. Mixing tank; 2. Powder feeding mechanism; 21. Dust extraction pipe; 22. Feed pipe; 23. Screw conveyor structure; 24. Dust extraction fan; 25. Transfer body; 251. Transfer chamber; 252. Observation window; 3. Self-sealing structure; 31. Sealing float; 311. Sealing body; 312. Sliding rod; 313. Expansion body; 32. Mounting limit frame; 321. Limiting ring; 322. First connecting rod; 323. Second connecting rod.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] Example 1

[0030] like Figure 1 , Figure 4 As shown in the figure, this embodiment proposes a PTFE membrane raw material stirring device, which mainly includes a stirring tank 1. The stirring tank 1 has a stirring chamber, a stirring paddle and other stirring structures. The stirring chamber serves to provide stirring space, while the stirring paddle and other stirring structures serve to mix the materials entering the stirring chamber.

[0031] like Figures 1-3 As shown, the mixing tank 1 in this embodiment is also provided with a powder feeding mechanism 2. The powder feeding mechanism 2 mainly includes a dust extraction pipe 21, a feed pipe 22, an auger conveying structure 23 for feeding dust into the feed pipe 22, and a dust extraction fan 24 for feeding dust along the dust extraction pipe 21 into the auger conveying structure 23.

[0032] The dust extraction pipe 21, the auger conveyor structure 23, and the feed pipe 22 work together to form a feeding channel that allows external dust to enter the mixing tank 1. Furthermore, the feeding channel is equipped with a dust extraction fan 24. The operation of the dust extraction fan 24 creates negative pressure inside the feeding channel, thereby extracting the dust until it moves to the auger conveyor structure 23. Under the action of the auger conveyor structure 23, the dust enters the mixing tank 1 in batches, thus completing the powder addition process.

[0033] In this embodiment, the screw conveyor structure 23 and the dust extraction pipe 21 are both located outside the mixing tank 1, while the feed pipe 22 exists in this embodiment with an opening (as a pipeline) on the top of the mixing tank 1, which effectively avoids the feeding channel from occupying the internal space of the mixing tank 1 and ensures the internal capacity of the mixing tank 1.

[0034] Preferably, the end of the dust extraction pipe 21 away from the dust extraction fan 24 is a corrugated pipe structure, so that the operator can pull the end of the dust extraction pipe 21 away from the dust extraction fan 24 to cooperate with the external storage structure such as the storage box for storing dust and powder, so that the dust extraction pipe 21 can extract dust and powder.

[0035] A transfer body 25 is provided between the auger conveyor structure 23 and the dust extraction pipe 21. The transfer body 25 has a transfer chamber 251 inside, meaning that the dust and powder extracted along the dust extraction pipe 21 first enters the transfer body 25 and then enters the auger conveyor structure 23. At the same time, the transfer body 25 is provided with an observation window 252 for observing its internal conditions. The existence of the observation window 252 allows the staff to observe the dust extraction and dust application of the powder application mechanism 2, making it convenient for the staff to confirm whether the powder application mechanism 2 in this embodiment has started working and is maintaining normal operation.

[0036] The feed pipe 22 is equipped with a self-sealing structure 3, which is located in the mixing tank 1 and is linked to the liquid level in the mixing tank 1. That is, in this embodiment, the self-sealing structure 3 can seal the feed pipe 22 according to the liquid level in the mixing tank 1, thereby preventing the liquid in the mixing tank 1 from flooding into the feeding channel and wetting the feeding channel. This would cause the powder to easily adhere to the feeding channel during movement, thereby shortening the cross-section of the powder inside the feeding channel and affecting the efficiency of subsequent powder addition.

[0037] Specifically, the self-sealing structure 3 in this embodiment mainly includes a blocking float 31 and a mounting limit frame 32. The mounting limit frame 32 is fixedly connected to the mixing tank 1, and the blocking float 31 is slidably connected to the mounting limit frame 32. That is, when the liquid level inside the mixing tank 1 rises to a certain level, it will come into contact with the blocking float 31. Affected by the buoyancy of the liquid, the blocking float 31 moves upward. During this process, the blocking float 31 is constrained by the sliding connection with the mounting limit frame 32 and can only move in the up and down direction to ensure that it can stably and accurately move into the feed pipe 22 and play the role of sealing the feed pipe 22. The mounting limit frame 32 itself is fixedly connected to the mixing tank 1 to ensure that the mounting limit frame 32 can stably limit the blocking float 31.

[0038] The sealing float 31 mainly includes a sealing body 311 and a sliding rod 312. The sealing body 311 is located at the end of the sliding rod 312 close to the feed pipe 22. The sealing body 311 has a conical structure, so that even if some of the dust and powder entering the mixing tank 1 along the feed pipe 22 falls onto the sealing body 311, it will slide along the surface of the sealing body 311 into the bottom of the mixing chamber or the liquid at the bottom of the mixing chamber. Moreover, the longitudinal section of the sealing body 311 is preferably a triangular structure, so that the sealing body 311 can have the characteristics of stability and firmness of a triangular structure, and is not easy to deform during the contact with the feed pipe 22, ensuring that the sealing body 311 can stably play the role of sealing the feed pipe 22.

[0039] Meanwhile, the sealing float 31 also includes an expansion body 313, which is located at the end of the sliding rod 312 away from the sealing body 311. The expansion body 313, the sliding rod 312, and the sealing body 311 are integrally formed to ensure the stability of the overall structure of the sealing float 31. The outer ring diameter of the limiting ring 321 is greater than or equal to the diameter of the expansion body 313. That is, the limiting ring 321 plays the role of covering the expansion body 313 in the opening direction of the feed pipe 22. Preferably, the outer ring diameter of the limiting ring 321 is greater than the diameter of the expansion body 313 to further improve the covering effect of the limiting ring 321 and effectively prevent falling dust from falling onto the expansion body 313.

[0040] Furthermore, the presence of the expansion body 313 can effectively increase the drainage volume of the sealing float 31, thereby increasing the buoyancy acting on the sealing float 31, so that the sealing body 311 fits more tightly with the feed pipe 22 and the sealing effect is improved.

[0041] The installation limiting frame 32 mainly includes a limiting ring 321, several first connecting rods 322, and several second connecting rods 323. The two ends of each first connecting rod 322 are respectively fixedly connected to the mixing tank 1 and each second connecting rod 323. Each second connecting rod 323 is fixedly connected to the limiting ring 321. Each first connecting rod 322 is preferably fixedly connected to the mixing tank 1 by welding. The limiting ring 321, each first connecting rod 322, and each second connecting rod 323 are integrally formed to ensure the structural stability of the overall structure of the installation limiting frame 32.

[0042] Correspondingly, the sliding rod 312 is slidably connected to the inner ring of the limiting ring 321, and the diameter of the sealing body 311 is larger than the outer ring diameter of the limiting ring 321. That is, in the opening direction of the feed pipe 22, the sealing body 311 can cover the limiting ring 321, thereby effectively preventing dust from falling onto the limiting ring 321, resulting in some dust not participating in the mixing work of this embodiment.

[0043] The presence of the sealing body 311 also ensures that the sealing float 31 will not detach from the installation limit frame 32 when it is not in contact with the liquid, effectively improving the stability and integrity of the overall structure of the self-sealing structure 3.

[0044] Furthermore, such as Figure 5 As shown, each of the first connecting rods 322 and each of the second connecting rods 323 are circular rod structures. With the help of the arc structure of the circular rods, dust and powder falling on each of the second connecting rods 323 and the angle between each of the second connecting rods 323 and each of the first connecting rods 322 can slide off along the arc surface, thereby preventing dust and powder from remaining on the installation limit frame 32.

[0045] Example 2

[0046] Based on Example 1, this example proposes that the transfer body 25 is equipped with a filter screen. The presence of the filter screen enables the transfer body 25 to discharge internal airflow without discharging dust, effectively avoiding the phenomenon of excessive airflow inside the transfer cavity 251 causing airflow turbulence, which would make it difficult for dust to contact the auger conveying structure 23, thereby affecting the dust conveying effect.

[0047] Preferably, the filter screen is positioned in the direction of airflow generated by the dust extraction fan 24, thus avoiding the need for the gas to change direction multiple times in the transfer chamber 251 before it can be discharged, effectively ensuring the gas discharge efficiency of this embodiment.

[0048] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A PTFE membrane raw material stirring device, comprising a stirring tank (1), wherein the stirring tank (1) is provided with a powder feeding mechanism (2), characterized in that, The powder feeding mechanism (2) includes a dust extraction pipe (21), a feed pipe (22), an auger conveying structure (23) for feeding dust into the feed pipe (22), and a dust extraction fan (24) for feeding dust along the dust extraction pipe (21) into the auger conveying structure (23). The feed pipe (22) is provided with a self-sealing structure (3).

2. The PTFE membrane raw material stirring device according to claim 1, characterized in that, The self-sealing structure (3) includes a sealing float (31) and an installation limit frame (32). The installation limit frame (32) is fixedly connected to the mixing tank (1), and the sealing float (31) is slidably connected to the installation limit frame (32).

3. The PTFE membrane raw material stirring device according to claim 2, characterized in that, The blocking float (31) includes a blocking body (311) and a sliding rod (312), wherein the blocking body (311) is a conical structure.

4. The PTFE membrane raw material stirring device according to claim 3, characterized in that, The installation limiting frame (32) includes a limiting ring (321), a plurality of first connecting rods (322), and a plurality of second connecting rods (323). The diameter of the sealing body (311) is larger than the outer ring diameter of the limiting ring (321). The two ends of each first connecting rod (322) are respectively fixedly connected to the mixing tank (1) and each second connecting rod (323), and each second connecting rod (323) is fixedly connected to the limiting ring (321).

5. The PTFE membrane raw material stirring device according to claim 4, characterized in that, Each of the first connecting rods (322) and each of the second connecting rods (323) are circular rod structures.

6. The PTFE membrane raw material stirring device according to claim 4, characterized in that, The blocking float (31) also includes an expansion body (313), which is located at the end of the sliding rod (312) away from the blocking body (311), and the outer ring diameter of the limiting ring (321) is greater than or equal to the diameter of the expansion body (313).

7. The PTFE membrane raw material stirring device according to any one of claims 1 to 6, characterized in that, The screw conveyor structure (23) is located outside the mixing tank (1).

8. The PTFE membrane raw material stirring device according to claim 7, characterized in that, A transfer body (25) is provided between the auger conveying structure (23) and the dust extraction pipe (21), and a transfer cavity (251) is provided inside the transfer body (25). The transfer unit (25) is provided with an observation window (252) for observing its internal conditions.

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