Polytetrafluoroethylene emulsion mixing tank

Abstract

The utility model discloses a kind of polytetrafluoroethylene emulsion mixing tanks, the top of tank body is provided with first feed inlet and second feed inlet, the inside of tank body is provided with mixing chamber, heating interlayer is provided on tank body, first feed inlet, second feed inlet and mixing chamber are all communicated, mixing stirring mechanism includes drive unit and stirring shaft connected on drive unit, stirring shaft is provided with stirring assembly, stirring assembly includes the first stirring piece and second stirring piece in mixing chamber, first stirring piece includes the multiple stirring blades of being set on stirring shaft, second stirring piece is set at the bottom of stirring shaft.The polytetrafluoroethylene emulsion mixing tank provided by the utility model makes the mixing tank keep at suitable temperature by heating interlayer, by first stirring piece and second stirring piece cooperation, the polytetrafluoroethylene emulsion in mixing tank can be uniformly stirred, improve mixing effect, effectively avoid the risk of demulsification.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to polytetrafluoroethylene emulsion mixing tanks. Background Technology

[0002] In the Teflon fiberglass cloth impregnation process, the mixing of polytetrafluoroethylene (PTFE) emulsion with acrylic emulsion, coupling agent, adhesion promoter, and gloss enhancer is a crucial preliminary step. Due to the significant differences in the chemical properties and mechanisms of action of the various emulsions, mixing must be carried out in stages. The PTFE emulsion needs to be treated separately in the initial stage to ensure the integrity of its molecular structure. Subsequently, the addition of materials such as acrylic emulsion can improve the flexibility and weather resistance of the coating, but it should be introduced gradually after the PTFE emulsion has been initially dispersed.

[0003] Mixing of polytetrafluoroethylene (PTFE) emulsions is typically carried out in mixing tanks, as the chemical stability of PTFE emulsions can only be maintained within a specific temperature range. Traditional agitators in existing mixing tanks usually have a simple structure, resulting in a limited agitation flow field and significant agitation blind zones within the tank. These zones are difficult to effectively agitate, leading to insufficient mixing and localized areas of excessively high or low concentrations. Conversely, some areas experience stronger agitation, and uneven agitation can negatively impact the performance of PTFE emulsions. Furthermore, uneven agitation may increase the risk of PTFE emulsion demulsification. Utility Model Content

[0004] The purpose of this invention is to provide a polytetrafluoroethylene emulsion mixing tank to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A polytetrafluoroethylene (PTFE) emulsion mixing tank includes a tank body with a first inlet and a second inlet at the top. A mixing chamber is located inside the tank body, and a heating jacket is provided on the tank body. The first and second inlets are connected to the mixing chamber. A mixing and stirring mechanism is provided on the tank body. The mixing and stirring mechanism includes a drive unit and a stirring shaft connected to the drive unit. A stirring assembly is provided on the stirring shaft. The stirring assembly includes a first stirring element and a second stirring element located within the mixing chamber. The first stirring element includes multiple stirring blades disposed on the stirring shaft, and the second stirring element is disposed at the bottom of the stirring shaft.

[0006] The aforementioned polytetrafluoroethylene emulsion mixing tank has multiple stirring blades, which are arranged sequentially at intervals along the stirring shaft.

[0007] The aforementioned polytetrafluoroethylene emulsion mixing tank includes a second stirring component comprising a first stirring frame and a second stirring frame disposed on opposite sides of the stirring shaft. Both the first stirring frame and the second stirring frame include a side rod, a top crossbar disposed on the top of the side rod, and a bottom arc-shaped rod disposed on the bottom of the side rod. The other ends of the top crossbar and the bottom arc-shaped rod are fixed to the stirring shaft.

[0008] In the aforementioned polytetrafluoroethylene emulsion mixing tank, a circular base plate is provided at the bottom of the stirring shaft, and an inclined stirring rod is inclinedly arranged on the circular base plate.

[0009] The aforementioned polytetrafluoroethylene emulsion mixing tank also includes a feed guide component, which includes an upper annular guide and a lower annular guide that are transversely arranged in the mixing chamber.

[0010] The aforementioned polytetrafluoroethylene emulsion mixing tank includes an upper annular guide and a lower annular guide, both of which consist of an outer ring and an inner ring arranged coaxially. The outer ring is fixedly disposed in the mixing chamber, and the stirring shaft is rotatably connected to the inner ring. The height of the outer ring is greater than the height of the inner ring. The outer ring and the inner ring are connected by a plurality of inclined guide plates, which are arranged sequentially at intervals along the circumference of the inner ring.

[0011] In the aforementioned polytetrafluoroethylene emulsion mixing tank, an upper guide gap is formed between the two inclined guide plates of the upper annular guide member, and a lower guide gap is formed between the two inclined guide plates of the lower annular guide member, wherein the upper guide gap is larger than the lower guide gap.

[0012] In the aforementioned polytetrafluoroethylene emulsion mixing tank, the inner ring of the upper annular guide member and the inner ring of the lower annular guide member are connected by an annular connector.

[0013] In the above technical solution, the polytetrafluoroethylene (PTFE) emulsion mixing tank provided by this utility model has a first inlet and a second inlet at the top of the tank body, a mixing chamber inside the tank body, and a heating jacket on the tank body. The mixing and stirring mechanism includes a drive unit and a stirring shaft connected to the drive unit. A stirring assembly is provided on the stirring shaft, including a first stirring element and a second stirring element. The first stirring element and the second stirring element are arranged at different positions on the stirring shaft. In this way, during use, the heating jacket keeps the mixing tank at a suitable temperature. The first stirring element can stir and mix the PTFE emulsion inside the mixing tank, and the second stirring element can stir and mix the PTFE emulsion at the bottom of the mixing tank. In this way, the first stirring element and the second stirring element cooperate with each other, so that the PTFE emulsion in the mixing tank can be uniformly stirred, improving the mixing effect and effectively avoiding the risk of emulsion breaking. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the structure of the polytetrafluoroethylene emulsion mixing tank provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the internal structure of the polytetrafluoroethylene emulsion mixing tank provided in an embodiment of the present utility model; Figure 3 A schematic diagram of the upper annular guide provided in an embodiment of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Tank body; 11. First feed inlet; 12. Second feed inlet; 13. Mixing chamber; 14. Heating jacket; 2. Mixing and stirring mechanism; 21. Drive unit; 22. Stirring shaft; 23. First stirring component; 231. Stirring blade; 24. Second stirring component; 241. First stirring frame; 242. Second stirring frame; 243. Side rod; 244. Top crossbar; 245. Bottom arc rod; 25. Circular bottom plate; 26. Inclined stirring rod; 3. Feed guide component; 31. Upper annular guide component; 32. Lower annular guide component; 33. Outer ring; 34. Inner ring; 35. Inclined guide plate; 36. Upper guide gap; 37. Lower guide gap; 38. Annular connector. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1-3 As shown, this utility model provides a polytetrafluoroethylene emulsion mixing tank, including a tank body 1. The top of the tank body 1 is provided with a first inlet 11 and a second inlet 12. The tank body 1 is provided with a mixing chamber 13 inside. The tank body 1 is provided with a heating jacket 14. The first inlet 11 and the second inlet 12 are connected to the mixing chamber 13. The tank body 1 is provided with a mixing and stirring mechanism 2. The mixing and stirring mechanism 2 includes a drive unit 21 and a stirring shaft 22 connected to the drive unit 21. The stirring shaft 22 is provided with a stirring assembly. The stirring assembly includes a first stirring element 23 and a second stirring element 24. The first stirring element 23 includes a plurality of stirring blades 231 provided on the stirring shaft 22. The second stirring element 24 is provided at the bottom of the stirring shaft 22.

[0019] Specifically, tank 1 is used to mix the raw materials of polytetrafluoroethylene (PTFE) emulsion. A mixing chamber 13 is provided inside tank 1. A first inlet 11 and a second inlet 12 are provided at the top of tank 1, both connected to the mixing chamber 13. The PTFE emulsion and the mixed materials can be conveyed into the mixing chamber 13 through the first inlet 11 and the second inlet 12. A discharge port is provided at the bottom of tank 1 to output the mixed PTFE emulsion. Control valves are provided on the first inlet 11, the second inlet 12, and the discharge port to control their opening or closing. A heating jacket 14 is provided on tank 1 to heat the mixing chamber 13, thereby maintaining the mixing chamber 13 at a suitable temperature. The heating jacket 14 contains a heating structure, which is prior art and will not be described in detail.

[0020] In this embodiment, the mixing and stirring mechanism 2 includes a drive unit 21, a stirring shaft 22, and a stirring assembly. The drive unit 21 is located at the top of the tank 1 and can be a drive motor. The stirring shaft 22 is connected to the drive end of the drive unit 21 and is located at the center of the mixing tank. The stirring assembly is located on the stirring shaft 22 and inside the mixing chamber 13. The stirring assembly includes a first stirring element 23 and a second stirring element 24. The first stirring element 23 includes multiple stirring blades 231, which are divided into multiple groups. Each group has at least two stirring blades 231. The multiple groups of stirring blades 231 are arranged at intervals along the axial direction of the stirring shaft 22, and the stirring blades 231 in each group are also arranged at intervals along the circumference of the stirring shaft 22. In this way, the multiple stirring blades 231 can uniformly stir the polytetrafluoroethylene emulsion in the mixing chamber 13. The second stirring element 24 is located at the bottom of the stirring shaft 22 and can be a frame structure. The second stirring element 24 can stir and mix the polytetrafluoroethylene emulsion at the bottom of the mixing tank.

[0021] The polytetrafluoroethylene (PTFE) emulsion mixing tank provided by this utility model has a first inlet 11 and a second inlet 12 at the top of the tank body 1. The tank body 1 has a mixing chamber 13 inside, and a mixing and stirring mechanism 2 is provided in the mixing chamber 13. The mixing and stirring mechanism 2 includes a drive unit 21 and a stirring shaft 22 connected to the drive unit 21. A stirring assembly is provided on the stirring shaft 22. The stirring assembly includes a first stirring element 23 and a second stirring element 24. The first stirring element 23 and the second stirring element 24 are arranged at different positions on the stirring shaft 22. In this way, during use, the first stirring element 23 can stir and mix the PTFE emulsion inside the mixing tank, and the second stirring element 24 can stir and mix the PTFE emulsion at the bottom of the mixing tank. Thus, the first stirring element 23 and the second stirring element 24 cooperate with each other, so that the PTFE emulsion in the mixing tank can be uniformly stirred, improving the mixing effect and effectively avoiding the risk of emulsion breaking.

[0022] In this embodiment, preferably, the second stirring component 24 includes a first stirring frame 241 and a second stirring frame 242 disposed on opposite sides of the stirring shaft 22. Both the first stirring frame 241 and the second stirring frame 242 include a side rod 243, a top crossbar 244 disposed at the top of the side rod 243, and a bottom arc-shaped rod 245 disposed at the bottom of the side rod 243. The other ends of the top crossbar 244 and the bottom arc-shaped rod 245 are fixed to the stirring shaft 22. A bottom crossbar is also disposed at the bottom of the side rod 243. One end is connected to the side rod 243, and the other end is connected to the stirring shaft 22. That is, the first stirring frame 241 and the second stirring frame 242 are located on the left and right sides of the stirring shaft 22, respectively. The first stirring frame 241 and the stirring shaft 22 form the left stirring frame structure, and the second stirring frame 242 and the stirring shaft 22 form the right stirring frame structure. During use, the rotation of the stirring shaft 22 can make the left and right stirring frames stir inside the mixing tank to mix the polytetrafluoroethylene emulsion in the mixing tank.

[0023] In this embodiment, preferably, a circular base plate 25 is provided at the bottom of the stirring shaft 22, and an inclined stirring rod 26 is inclinedly provided on the circular base plate 25. There are at least two inclined stirring rods 26 on the circular base plate 25, and the two inclined stirring rods 26 have different inclination angles. In this way, when the stirring shaft 22 rotates, the circular base plate 25 and the inclined stirring rods 26 can stir the polytetrafluoroethylene emulsion at the bottom of the mixing tank.

[0024] In this embodiment, preferably, it also includes a feed guide component 3. The feed guide component 3 includes an upper annular guide component 31 and a lower annular guide component 32 that are arranged transversely in the mixing chamber 13. There is a certain gap between the upper annular guide component 31 and the lower annular guide component 32. The raw materials delivered to the tank 1 are dispersed through the upper annular guide component 31, so that the raw materials to be mixed are dispersed and added to the polytetrafluoroethylene emulsion.

[0025] In this embodiment, preferably, both the upper annular guide 31 and the lower annular guide 32 include an outer ring 33 and an inner ring 34 coaxially arranged. The outer ring 33 is fixedly arranged in the mixing chamber 13, and the stirring shaft 22 is rotatably connected to the inner ring 34. The height of the outer ring 33 is greater than the height of the inner ring 34. The outer ring 33 and the inner ring 34 are connected by a plurality of inclined guide plates 35. The plurality of inclined guide plates 35 are arranged sequentially at intervals along the circumference of the inner ring 34, so that the inclined guide plates 35 are all inclined. The two inclined guide plates 35 of the upper annular guide 31 An upper guide gap 36 is formed between the two inclined guide plates 35 of the lower annular guide member 32, and a lower guide gap 37 is formed between the two inclined guide plates 35 of the lower annular guide member 32. The upper guide gap 36 is larger than the lower guide gap 37. Thus, when liquid material is added to the tank 1, the liquid material is first dispersed and guided by the upper annular guide member 31, and the liquid material flows out from the upper guide gap 36. Then it is transported to the lower annular guide member 32, dispersed and guided by the lower annular guide member 32, and the liquid material flows out from the lower guide gap 37, thereby dispersing and transporting the liquid material to the mixing chamber 13.

[0026] In this embodiment, preferably, the inner ring 34 of the upper annular guide 31 and the inner ring 34 of the lower annular guide 32 are connected by an annular connector 38. The upper end of the annular connector 38 is connected to the inner ring 34 of the upper annular guide 31, and the lower end of the annular connector 38 is connected to the inner ring 34 of the lower annular guide 32. At the same time, the inner ring 34 and the annular connector 38 can also be an integral structure, and the stirring shaft 22 is rotatably connected to the annular connector 38.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A polytetrafluoroethylene emulsion mixing tank, comprising a tank body, characterized in that, The top of the tank is provided with a first inlet and a second inlet. The inside of the tank is provided with a mixing chamber. The tank is provided with a heating jacket. The first inlet and the second inlet are both connected to the mixing chamber. The tank is provided with a mixing and stirring mechanism. The mixing and stirring mechanism includes a drive unit and a stirring shaft connected to the drive unit. The stirring shaft is provided with a stirring assembly. The stirring assembly includes a first stirring element and a second stirring element located in the mixing chamber. The first stirring element includes multiple stirring blades provided on the stirring shaft. The second stirring element is located at the bottom of the stirring shaft.

2. The polytetrafluoroethylene emulsion mixing tank according to claim 1, characterized in that, There are multiple stirring blades, which are arranged at intervals along the stirring shaft.

3. The polytetrafluoroethylene emulsion mixing tank according to claim 1, characterized in that, The second stirring component includes a first stirring frame and a second stirring frame disposed on opposite sides of the stirring shaft. Both the first stirring frame and the second stirring frame include a side rod, a top crossbar disposed on the top of the side rod, and a bottom arc-shaped rod disposed on the bottom of the side rod. The other ends of the top crossbar and the bottom arc-shaped rod are fixed to the stirring shaft.

4. The polytetrafluoroethylene emulsion mixing tank according to claim 1, characterized in that, The bottom of the stirring shaft is provided with a circular base plate, and an inclined stirring rod is inclinedly arranged on the circular base plate.

5. The polytetrafluoroethylene emulsion mixing tank according to claim 1, characterized in that, It also includes a feed guide component, which includes an upper annular guide and a lower annular guide that are transversely arranged in the mixing chamber.

6. The polytetrafluoroethylene emulsion mixing tank according to claim 5, characterized in that, Both the upper and lower annular guide members include an outer ring and an inner ring arranged coaxially. The outer ring is fixedly arranged in the mixing chamber, and the stirring shaft is rotatably connected to the inner ring. The height of the outer ring is greater than the height of the inner ring. The outer ring and the inner ring are connected by a plurality of inclined guide plates, which are arranged sequentially at intervals along the circumference of the inner ring.

7. The polytetrafluoroethylene emulsion mixing tank according to claim 6, characterized in that, An upper flow guide gap is formed between the two inclined flow guide plates of the upper annular flow guide member, and a lower flow guide gap is formed between the two inclined flow guide plates of the lower annular flow guide member. The upper flow guide gap is larger than the lower flow guide gap.

8. The polytetrafluoroethylene emulsion mixing tank according to claim 7, characterized in that, The inner ring of the upper annular guide and the inner ring of the lower annular guide are connected by an annular connector.

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