Povidone polymerization equipment

Abstract

The utility model relates to povidone polymerization equipment. The reaction kettle comprises a reaction kettle body, the reaction kettle body comprises a kettle body, a kettle body cover, a stirrer and a motor fixed on the kettle body cover, the bottom of the kettle body is provided with a discharge port, the upper side area of the kettle body is provided with an integrated seat mounting through hole and an integrated seat fixed relative to the integrated seat mounting through hole, and a plurality of tubular objects with different thicknesses are mounted on the integrated seat in a penetrating manner; the tubular object comprises a feeding pipe, a temperature measuring pipe, a monomer dropwise adding pipe and an initiator dropwise adding pipe, a fixing assembly used for fixing the tubular object is further arranged on the integrated seat, the fixing assembly comprises an inserting through hole, a counter bore coaxial with the inserting through hole, an elastic pipe sleeve arranged in the counter bore and a pressing sleeve, and the pressing sleeve extrudes the elastic pipe sleeve. According to the utility model, the production and manufacturing difficulty of the valve body can be obviously reduced, all the pipe bodies are distributed in a concentrated manner, the strength of the kettle body cannot be influenced, and in actual use, the operation complexity of workers can be obviously reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a reaction kettle, in particular to a polyvidone polymerization device. Background Art

[0002] Povidone generally refers to polyvinyl pyrrolidone, which is a polymer obtained by bulk polymerization, solution polymerization, homopolymerization and other methods using monomer vinyl pyrrolidone (NVP) as raw material. In the bulk polymerization preparation process, due to the high viscosity of the reaction system, the polymer is not easy to diffuse, and the heat of the polymerization reaction is not easy to remove, resulting in local overheating and other problems. Therefore, the obtained product has a low molecular weight, a high content of residual monomers, and is mostly yellow, and has little practical value. At present, the commonly used synthesis method in industry is homopolymerization, specifically, adding an initiator to the NVP solution and heating it. By adjusting the reaction conditions such as monomer concentration, polymerization temperature, and initiator dosage, PVP homopolymers with different molecular weights and different water solubilities can be obtained.

[0003] For this reason, the industry has also developed a reactor for polymerization reaction. The structure of the reactor is generally composed of a reactor body, an agitator and a motor fixed on the top of the reactor body. The reactor body is a hollow structure, and its exterior is also wrapped with a heating component for reaction heating. At the same time, the reactor body is also provided with at least a feed pipe, a temperature measuring pipe, a monomer drop pipe, and an initiator drop pipe. Therefore, a plurality of mounting holes need to be set on the reactor body, which not only increases the difficulty of manufacturing and processing the reactor body, but also in order to avoid the problem of the decrease in the strength of the reactor body due to the close spacing between adjacent mounting holes, the feed pipe, the temperature measuring pipe, the monomer drop pipe, and the initiator drop pipe are all dispersed in all directions of the reactor body. Once the size of the reactor body is large, it will cause the workers to walk around the reactor body in actual use to observe or operate the various pipes thereon, which is inconvenient. Summary of the invention

[0004] The utility model provides a polyvidone polymerization device, which solves the problem of dispersed distribution positions of various tubes on a reaction kettle body in the prior art.

[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: a polyvidone polymerization device, comprising a reactor body, the reactor body comprising a reactor body, a reactor body cover, a stirrer and a motor fixed on the reactor body cover, a discharge port is provided at the bottom of the reactor body, an integrated seat mounting through hole and an integrated seat fixed relative to the integrated seat mounting through hole are provided in the upper area of ​​the reactor body, a plurality of tubular objects of different thicknesses are installed through the integrated seat, the tubular objects comprise a feed pipe, a temperature measuring pipe, a monomer dripping pipe, and an initiator dripping pipe, and a fixing assembly for fixing the tubular objects is also provided on the integrated seat, The fixing component includes a plug-in through hole, a countersunk hole coaxial with the plug-in through hole, an elastic tube sleeve arranged in the countersunk hole, and a compression sleeve. The compression sleeve is arranged to squeeze the elastic tube sleeve. The inner hole sizes of the plug-in through hole and the elastic tube sleeve match the outer diameter of the corresponding tubular object. In order to facilitate installation or disassembly, the size of the plug-in through hole and the inner hole size of the elastic tube sleeve are slightly larger than the outer diameter of the corresponding tubular object (the tubular object includes a feed tube, a temperature measuring tube, a monomer dripping tube, and an initiator dripping tube). When the elastic tube sleeve is under pressure, its inner hole tends to shrink, and then it can tightly fit with the outer wall of the corresponding tubular object, thereby achieving the effect of clamping, fixing and sealing.

[0006] The utility model only has a discharge port and an integrated seat mounting through hole on the kettle body, which can significantly reduce the difficulty of its production and manufacturing. The feed pipe, temperature measuring tube, monomer dripping tube and initiator dripping tube are all transferred to the integrated seat, and the integrated seat is installed on the integrated seat mounting through hole. In this way, all the tubes are centrally distributed and will not affect the strength of the kettle body itself. In actual use, it can significantly reduce the cumbersomeness of workers' operations and improve production efficiency.

[0007] Furthermore, the end of the temperature measuring tube extends to the bottom center area of ​​the kettle body and avoids the operating area of ​​the agitator. The bottom center area of ​​the kettle body is the center of the polymerization reaction, and the temperature of this area tends to the actual reaction temperature, so the detected data is more accurate.

[0008] Furthermore, the tubular object also includes a liquid extraction tube, the end of which is located near the temperature measurement area, the integrated seat is also provided with a one-way valve, and the liquid extraction tube is provided with a stop valve. The liquid extraction tube is used to collect polymers in the kettle body, and is used to observe or detect the appearance or various properties of the polymers. The applicable method is: open the stop valve, use a syringe or other negative pressure device to extract polymers from the liquid extraction tube,

[0009] Furthermore, the tubular object also includes a first air pipe and a second air pipe. The first air pipe can inject air into the kettle, and the second air pipe can extract air from the kettle. When the feed pipe of the utility model starts to feed, since the interior is airtight as a whole, the second air pipe is required to cooperate with the extraction of air to balance the air pressure area inside and outside the kettle; similarly, the first air pipe is required to cooperate with the injection of gas when discharging.

[0010] Therefore, compared with the prior art, the utility model has the following characteristics: 1. The kettle body of the utility model is only provided with a discharge port and an integrated seat mounting through hole, which can significantly reduce the difficulty of its production and manufacturing; 2. The tubular objects are transferred to the integrated seat, and the integrated seat is installed on the integrated seat mounting through hole, so that all the tubes are distributed centrally and will not affect the strength of the kettle body itself. In actual use, the cumbersomeness of workers' operations can be significantly reduced, and production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0012] Attached Figure 2 It is a cross-sectional view of the integrated seat;

[0013] Attached Figure 3 It is a top view of the integrated seat;

[0014] Attached Figure 4 It is a schematic diagram of the structure of the liquid extraction tube;

[0015] Attached Figure 5 It is a cross-sectional view of the compression sleeve. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Example 1: See Figure 1 , Figure 2 and Figure 3A polyvidone polymerization device includes a reactor body 100, the reactor body includes a reactor body 110, a reactor body cover 120, a stirrer and a motor 130 fixed on the reactor body cover, a discharge port 140 is provided at the bottom of the reactor body, and a heating component 300 is also wrapped outside the reactor body, an integrated seat mounting through hole 150 and an integrated seat 200 fixed relative to the integrated seat mounting through hole are provided in the upper side area of ​​the reactor body, and a plurality of tubular objects of different thicknesses are installed through the integrated seat, and the tubular objects include a feed pipe 10, a temperature measuring pipe 20, a monomer dripping pipe 30, and an initiator dripping pipe 40, wherein the monomer dripping pipe and the initiator dripping pipe are each equipped with a stop valve 90, and the integrated seat is also provided with a The fixing component 210 includes a plug-in through hole 220, a countersunk hole 230 coaxial with the plug-in through hole, an elastic tube sleeve 240 arranged in the countersunk hole, and a compression sleeve 250. The elastic tube sleeve is made of rubber, and the compression sleeve is arranged to squeeze the elastic tube sleeve. The inner hole sizes of the plug-in through hole and the elastic tube sleeve match the outer diameter of the corresponding tubular object; in order to facilitate installation or disassembly, the size of the plug-in through hole and the inner hole size of the elastic tube sleeve are slightly larger than the outer diameter of the corresponding tubular object (the tubular object includes a feed tube, a temperature measuring tube, a monomer dripping tube, and an initiator dripping tube). When the elastic tube sleeve is under pressure, its inner hole tends to shrink, and then it can tightly fit with the outer wall of the corresponding tubular object, thereby achieving the effect of clamping, fixing and sealing.

[0019] The kettle body of the present embodiment is only provided with a discharge port and an integrated seat mounting through hole, which can significantly reduce the difficulty of its production and manufacturing. The feed pipe, temperature measuring tube, monomer dripping tube and initiator dripping tube are all transferred to the integrated seat, and the integrated seat is installed on the integrated seat mounting through hole. In this way, all the tubes are centrally distributed and will not affect the strength of the kettle body itself. In actual use, it can significantly reduce the tediousness of workers' operations and improve production efficiency.

[0020] See Figure 5 The compression sleeve is provided with an external hexagonal cap 251, an external threaded portion 252 and a sleeve hole 253, and the inner wall of the countersunk hole is provided with an internal threaded portion 231 that matches the external threaded portion.

[0021] See Figure 2 A flange portion 111 is provided in the upper area of ​​the kettle body, the integrated seat mounting through hole is located in the flange portion, a flange flange 260 which can be connected to the flange portion is provided on the integrated seat, and an elastic gasket 270 is clamped between the flange portion and the flange flange.

[0022] The end of the temperature measuring tube extends to the bottom center area of ​​the kettle body and avoids the operating area of ​​the agitator. The bottom center area of ​​the kettle body is the center of the polymerization reaction. The temperature of this area tends to the actual reaction temperature, so the test data is more accurate.

[0023] See Figure 4The tubular object also includes a liquid extraction tube 50, the end of which is located near the temperature measurement area. A one-way valve 60 is also provided on the integrated seat, and a stop valve 90 is also provided on the liquid extraction tube. The liquid extraction tube is used to collect polymers in the kettle body and to observe or detect the appearance or various properties of the polymers. The applicable method is: open the stop valve, use a syringe or other negative pressure device to extract polymers from the liquid extraction tube,

[0024] See Figure 2 The tubular object further includes a first air pipe 70 and a second air pipe 80. The first air pipe can inject air into the kettle, and the second air pipe can extract air from the kettle. When the feed pipe of this embodiment starts to feed, since the interior is airtight as a whole, the second air pipe is required to cooperate with the extraction of air to balance the air pressure areas inside and outside the kettle; similarly, the first air pipe is required to cooperate with the injection of gas when discharging.

[0025] It is obvious to those skilled in the art that the utility model can be changed in many ways, and such changes are not considered to be out of the scope of the utility model. All such modifications obvious to those skilled in the art will be included in the scope of the claims.

Claims

1. A polyvidone polymerization device, comprising a reactor body, the reactor body comprising a reactor body, a reactor body cover, a stirrer and a motor fixed on the reactor body cover, the bottom of the reactor body is provided with a discharge port, characterized in that: An integrated seat mounting through hole and an integrated seat fixed relative to the integrated seat mounting through hole are provided in the upper area of ​​the kettle body. A number of tubular objects of different thicknesses are installed through the integrated seat, and the tubular objects include a feed pipe, a temperature measuring tube, a monomer dripping tube, and an initiator dripping tube. The integrated seat is also provided with a fixing component for fixing the tubular objects, and the fixing component includes a plug-in through hole, a countersunk hole coaxial with the plug-in through hole, an elastic tube sleeve arranged in the countersunk hole, and a compression sleeve. The compression sleeve is arranged by squeezing the elastic tube sleeve, and the inner hole sizes of the plug-in through hole and the elastic tube sleeve match the outer diameter of the corresponding tubular object.

2. The polyvidone polymerization device according to claim 1, characterized in that: The compression sleeve is provided with an external hexagonal cap, an external threaded portion and a sleeve hole, and the inner wall of the countersunk hole is provided with an internal threaded portion matched with the external threaded portion.

3. The polyvidone polymerization device according to claim 1 or 2, characterized in that: A flange portion is provided in the upper area of ​​the kettle body, an integrated seat mounting through hole is located in the flange portion, a flange flange which can be connected to the flange portion is provided on the integrated seat, and an elastic gasket is clamped between the flange portion and the flange flange.

4. The polyvidone polymerization device according to claim 1, characterized in that: The end of the temperature measuring tube extends to the bottom center area of ​​the kettle body and avoids the operating area of ​​the stirrer.

5. The polyvidone polymerization equipment according to claim 1, characterized in that: The tubular object also includes a liquid extraction pipe, a one-way valve is also provided on the integrated seat, and a stop valve is provided on the liquid extraction pipe.

6. The polyvidone polymerization device according to claim 1, characterized in that: The tubular object also includes a first trachea and a second trachea.

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