A raw material dissolving device for pyromellitic dianhydride

Abstract

This utility model relates to the field of chemical equipment technology and discloses a raw material dissolving device for pyromellitic dianhydride, including a dissolving tank with a double-layer jacket structure, the outer layer being an insulation layer and the inner layer being made of corrosion-resistant stainless steel; a temperature control structure disposed inside the dissolving tank; and a mixing structure disposed inside the dissolving tank. In this raw material dissolving device for pyromellitic dianhydride, the heat transfer oil is poured into the cavity through the inlet pipe via the temperature control structure. Then, a programmable controller activates the temperature controller to control the heating of the spring heating tube. The double-layer jacket design, with the inner layer being made of corrosion-resistant stainless steel and the outer layer being an insulation layer, and the jacket being a cavity, along with the temperature sensor installed on the inner wall of the dissolving tank, allows for real-time monitoring of the internal temperature of the dissolving tank, which is then adjusted by the temperature controller.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a raw material dissolution device for pyromellitic dianhydride. Background Technology

[0002] Pyromellitic dianhydride is a commonly used chemical raw material, mainly used in the synthesis of polyimide resins, epoxy resin modification, and other polymer materials.

[0003] In the production of fine chemicals such as pyromellitic dianhydride (PMDA), the uniformity of raw material dissolution directly determines the purity of the final product and the reaction efficiency. Traditional stirring devices are prone to localized high temperatures or uneven solvent distribution, leading to raw material agglomeration or incomplete dissolution. Therefore, we propose a raw material dissolution device for pyromellitic dianhydride to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a raw material dissolution device for pyromellitic dianhydride, which solves the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a raw material dissolving device for pyromellitic dianhydride, including a dissolving tank, wherein the dissolving tank adopts a double-layer jacket structure, the outer layer is a heat insulation layer, and the inner layer is made of corrosion-resistant stainless steel.

[0006] A temperature control structure is disposed inside the melting tank;

[0007] A mixing structure is disposed inside the dissolving tank.

[0008] Furthermore, the temperature control structure includes a cavity, which is located inside the dissolving tank. The cavity contains heat transfer oil, and a spring heating tube is fixedly installed inside the cavity. The bottom end of the spring heating tube is electrically connected to a temperature controller, which is fixedly installed on the lower surface of the dissolving tank. One end of the liquid inlet pipe is fixedly connected to the inside of the cavity through the dissolving tank, and a temperature sensor is fixedly installed on the top of the inner wall of the dissolving tank.

[0009] Furthermore, the mixing structure includes a drive motor, which is fixedly installed at the top of the dissolving tank. A rotating shaft is fixedly installed at the output end of the drive motor. The bottom end of the rotating shaft extends into the inner cavity of the dissolving tank. A connecting seat is fixedly installed on the outer wall of the rotating shaft. A mixing plate is fixedly installed on the outer wall of the connecting seat. A mixing rod is fixedly installed on the outer wall of the mixing plate. A dispersing structure is provided on the outer wall of the rotating shaft.

[0010] Furthermore, the hybrid structure also includes a V-shaped bucket disc, the interior of which is movably mounted on the outer wall of the rotating shaft. The inner wall of the V-shaped bucket disc has a movable hole. A connecting plate is fixedly mounted on the bottom of the V-shaped bucket disc. A vibration motor is fixedly mounted on the outer wall of the connecting plate. A buffer spring is fixedly mounted on the outer wall at the center of the V-shaped bucket disc. A fixing plate is movably mounted on the bottom end of the buffer spring. A fixing plate is fixedly mounted on the bottom end of the rotating shaft.

[0011] Furthermore, the disintegration structure includes a second connecting seat, the inner part of which is fixedly installed on the outer wall of the rotating shaft. A plurality of inclined plates are arranged in a ring and fixedly installed on the outer wall of the second connecting seat. The outer wall of each inclined plate has mounting holes. A movable rod is movably connected to the outer wall of the inclined plate through these mounting holes. A gravity ball is fixedly installed at the bottom end of the movable rod. The outer wall of the gravity ball contacts the inner wall of the V-shaped bucket. A second movable rod is movably connected to the outer wall of the inclined plate through these mounting holes. A push plate is fixedly installed at the bottom end of the second movable rod. The outer wall of the push plate contacts the inner wall of the V-shaped bucket. A third movable rod is fixedly installed at one end of the push plate. The top end of the third movable rod is movably connected to the outer wall of the inclined plate through these mounting holes.

[0012] Furthermore, the inner wall of the dissolving tank is provided with an annular groove, and a V-shaped hopper is movably connected inside the annular groove. The bottom end of the dissolving tank is fixedly connected to a discharge pipe, the top end of the dissolving tank is fixedly connected to a feed pipe, and a programmable controller is fixedly installed on the top end of the dissolving tank.

[0013] Furthermore, the temperature controller and temperature sensor are electrically connected to the programmable controller, and the drive motor is electrically connected to the programmable controller.

[0014] The beneficial effects of this utility model are:

[0015] 1. This pyromellitic dianhydride raw material dissolving device, through the setting of a temperature control structure, pours heat transfer oil into the cavity through the inlet pipe, and then the programmable controller starts the temperature controller to control the heating of the spring heating tube. It adopts a double-layer jacket design, with the inner layer being made of corrosion-resistant stainless steel and the outer layer being an insulation layer. The jacket is a cavity, and a temperature sensor is installed on the inner wall of the dissolving tank. The temperature sensor can monitor the internal temperature of the dissolving tank and then adjust it through the temperature controller.

[0016] 2. This pyromellitic dianhydride raw material dissolving device, through the design of the mixing structure, activates the drive motor when the raw material is poured into the dissolving tank through the feed pipe. The drive motor drives the mixing plate, mixing rod, and dispersing structure to rotate via the rotating shaft, mixing the raw material. Simultaneously, the movable rod connected to the inclined plate drives the gravity ball to rotate, causing the gravity ball to squeeze the material on the V-shaped hopper, preventing the raw material from clumping. At the same time, the vibration motor push plate, movable rod two, and movable rod three activate to quickly disperse the raw material in the dissolving tank, breaking up agglomerated particles. The vibration motor drives the V-shaped hopper to vibrate, causing the dissolved raw material on the V-shaped hopper to flow to the bottom of the inner wall of the dissolving tank, thus improving the dissolving efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the disintegration structure of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0023] Explanation of reference numerals in the attached drawings: 1. Dissolving tank; 11. Outer layer; 12. Inner layer; 13. Temperature control structure; 131. Cavity; 132. Heat transfer oil; 133. Spring heating tube; 134. Temperature controller; 135. Liquid inlet pipe; 136. Temperature sensor; 2. Mixing structure; 21. Drive motor; 22. Rotating shaft; 23. Connecting seat one; 24. Mixing plate; 25. Mixing rod; 26. Dispersing structure; 261. Connecting seat two; 262. Inclined plate; 263. Mounting hole; 264. Movable rod one; 265. Gravity ball; 266. Movable rod two; 267. Push plate; 268. Movable rod three; 27. V-shaped hopper; 28. Movable hole; 29. ​​Connecting plate; 210. Vibration motor; 211. Buffer spring; 212. Fixing plate; 3. Annular groove; 4. Discharge pipe; 5. Feed pipe; 6. Programmable controller. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figures 1-5 A raw material dissolving device for pyromellitic dianhydride includes a dissolving tank 1. The dissolving tank 1 adopts a double-layer jacket structure, with the outer layer 11 being a heat insulation layer and the inner layer 12 being made of corrosion-resistant stainless steel.

[0026] Temperature control structure 13 is installed inside the melting tank 1;

[0027] Mixing structure 2 is disposed inside the dissolving tank 1.

[0028] Reference Figure 1 , Figure 2 , Figure 3 As shown, the temperature control structure 13 includes a cavity 131, which is located inside the dissolving tank 1. The cavity 131 contains heat transfer oil 132, and a spring heating tube 133 is fixedly installed inside the cavity 131. The bottom end of the spring heating tube 133 is electrically connected to a temperature controller 134, which is fixedly installed on the lower surface of the dissolving tank 1. One end of the liquid inlet pipe 135 is fixedly connected to the inside of the cavity 131 through the dissolving tank 1, and a temperature sensor 136 is fixedly installed on the top of the inner wall of the dissolving tank 1.

[0029] In this embodiment, through the setting of the temperature control structure 13, the heat transfer oil 132 is poured into the cavity 131 through the liquid inlet pipe 135. Then, the programmable controller 6 starts the temperature controller 134 to control the heating of the spring heating tube 132. By adopting a double-layer jacket design, the inner layer 12 is made of corrosion-resistant stainless steel, the outer layer 11 is a heat insulation layer, the jacket is the cavity 131, and a temperature sensor 136 is installed on the inner wall of the dissolving tank 1. The temperature sensor 136 can monitor the internal temperature of the dissolving tank 1 and then adjust it through the temperature controller 134.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the mixing structure 2 includes a drive motor 21, which is fixedly installed at the top of the dissolving tank 1. A rotating shaft 22 is fixedly installed at the output end of the drive motor 21. The bottom end of the rotating shaft 22 extends into the inner cavity of the dissolving tank 1. A connecting seat 23 is fixedly installed on the outer wall of the rotating shaft 22. A mixing plate 24 is fixedly installed on the outer wall of the connecting seat 23. A mixing rod 25 is fixedly installed on the outer wall of the mixing plate 24. A dispersing structure 26 is provided on the outer wall of the rotating shaft 22.

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the hybrid structure 2 also includes a V-shaped bucket 27. The interior of the V-shaped bucket 27 is movably mounted on the outer wall of the rotating shaft 22. The inner wall of the V-shaped bucket 27 has a movable hole 28. A connecting plate 29 is fixedly mounted on the bottom of the V-shaped bucket 27. A vibration motor 210 is fixedly mounted on the outer wall of the connecting plate 29. A buffer spring 211 is fixedly mounted on the outer wall at the center of the V-shaped bucket 27. A fixing plate 212 is movably mounted on the bottom end of the buffer spring 211. A fixing plate 212 is fixedly mounted on the bottom end of the rotating shaft 22.

[0032] Reference Figure 1 , Figure 3 , Figure 5 As shown, the disintegration structure 26 includes a second connecting seat 261. The inner part of the second connecting seat 261 is fixedly installed on the outer wall of the rotating shaft 22. Several inclined plates 262 are arranged in a ring and fixedly installed on the outer wall of the second connecting seat 261. The outer wall of the inclined plates 262 has mounting holes 263. The outer wall of the inclined plates 262 is movably connected to the first movable rod 264 through the mounting holes 263. The bottom end of the first movable rod 264 is fixedly installed with a gravity ball 265. The outer wall of the gravity ball 265 is in contact with the inner wall of the V-shaped bucket 27. The outer wall of the inclined plate 262 is movably connected to the second movable rod 266 through the mounting holes 263. The bottom end of the second movable rod 266 is fixedly installed with a push plate 267. The outer wall of the push plate 267 is in contact with the inner wall of the V-shaped bucket 27. One end of the push plate 267 is fixedly installed with a third movable rod 268. The top end of the third movable rod 268 is movably connected to the outer wall of the inclined plate 262 through the mounting holes 263.

[0033] In this embodiment, when the raw material is poured into the dissolving tank 1 through the feed pipe 5, the programmable controller 6 starts the drive motor 21. The drive motor 21 drives the mixing plate 24, mixing rod 25 and dispersing structure 26 to rotate through the rotating shaft 22 to mix the raw material. At the same time, the movable rod 264 connected to the inclined plate 262 drives the gravity ball 265 to rotate, so that the gravity ball 265 squeezes the material on the V-shaped hopper 27 to prevent the raw material from clumping. Meanwhile, the push plate 267, movable rod 266 and movable rod 268 quickly disperse the raw material in the dissolving tank 1, break up the agglomerated particles and improve the dissolving efficiency.

[0034] Reference Figure 1 , Figure 2 As shown, the inner wall of the dissolving tank 1 is provided with an annular groove 3, and a V-shaped hopper 27 is movably connected inside the annular groove 3. The bottom end of the dissolving tank 1 is fixedly connected to a discharge pipe 4, the top end of the dissolving tank 1 is fixedly connected to a feed pipe 5, and a programmable controller 6 is fixedly installed on the top end of the dissolving tank 1.

[0035] Reference Figure 1 , Figure 2As shown, the temperature controller 134 and the temperature sensor 136 are electrically connected to the programmable controller 6, and the drive motor 21 is electrically connected to the programmable controller 6.

[0036] In this embodiment, the programmable controller 6 controls the power supply of the drive motor 21 through the output module to start and stop it. Its control terminal is controlled by an external power supply control device through a wiring harness. The drive motor 21 is a servo motor, and its control terminal is controlled by an external power supply control device through a wiring harness.

[0037] In use, the heat transfer oil 132 is poured into the cavity 131 through the inlet pipe 135 via the temperature control structure 13. Then, the programmable controller 6 activates the temperature controller 134 to control the heating of the spring heating tube 132. A double-layer jacket design is adopted, with the inner layer 12 made of corrosion-resistant stainless steel and the outer layer 11 being an insulation layer. The jacket is the cavity 131. A temperature sensor 136 is installed on the inner wall of the dissolving tank 1 to monitor the internal temperature of the dissolving tank 1, which is then adjusted by the temperature controller 134. When the raw material is poured into the dissolving tank 1 through the feed pipe 5, the programmable controller 6 starts the drive motor. 21. Drive motor 21 drives mixing plate 24, mixing rod 25 and dispersing structure 26 to rotate via rotating shaft 22 to mix raw materials. At the same time, movable rod 264 connected to inclined plate 262 drives gravity ball 265 to rotate, so that gravity ball 265 squeezes the material on V-shaped hopper 27 to prevent raw materials from agglomerating. Simultaneously, vibrating motor 210 and push plate 267, movable rod 266 and movable rod 268 are started to quickly disperse the raw materials in dissolving tank 1 and break up agglomerated particles. Vibrating motor 210 drives V-shaped hopper 27 to vibrate, so that the raw materials dissolved on V-shaped hopper 27 flow to the bottom of the inner wall of dissolving tank 1, improving dissolution efficiency.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A raw material dissolving apparatus for pyromellitic dianhydride, comprising a dissolving tank (1), characterized by: The melting tank (1) adopts a double-layer jacket structure, with the outer layer (11) being a heat insulation layer and the inner layer (12) being made of corrosion-resistant stainless steel. Temperature control structure (13) is disposed inside the dissolving tank (1); A mixing structure (2) is disposed inside the dissolving tank (1); The mixing structure (2) includes a drive motor (21), which is fixedly installed at the top of the dissolving tank (1). A rotating shaft (22) is fixedly installed at the output end of the drive motor (21). The bottom end of the rotating shaft (22) extends into the inner cavity of the dissolving tank (1). A connecting seat (23) is fixedly installed on the outer wall of the rotating shaft (22). A mixing plate (24) is fixedly installed on the outer wall of the connecting seat (23). A mixing rod (25) is fixedly installed on the outer wall of the mixing plate (24). A dispersing structure (26) is provided on the outer wall of the rotating shaft (22). The hybrid structure (2) also includes a V-shaped bucket (27), the interior of which is movably mounted on the outer wall of the rotating shaft (22). The inner wall of the V-shaped bucket (27) has a movable hole (28). A connecting plate (29) is fixedly mounted on the bottom of the V-shaped bucket (27). A vibration motor (210) is fixedly mounted on the outer wall of the connecting plate (29). A buffer spring (211) is fixedly mounted on the outer wall at the center of the V-shaped bucket (27). A fixing plate (212) is movably mounted on the bottom end of the buffer spring (211). A fixing plate (212) is fixedly mounted on the bottom end of the rotating shaft (22).

2. The raw material dissolving apparatus for pyromellitic dianhydride according to claim 1, characterized in that: The temperature control structure (13) includes a cavity (131) which is located inside the dissolving tank (1). The cavity (131) contains heat transfer oil (132). A spring heating tube (133) is fixedly installed inside the cavity (131). A temperature controller (134) is electrically connected to the bottom end of the spring heating tube (133). The temperature controller (134) is fixedly installed on the lower surface of the dissolving tank (1). One end of the liquid inlet pipe (135) is fixedly connected to the inside of the cavity (131) through the dissolving tank (1). A temperature sensor (136) is fixedly installed on the top of the inner wall of the dissolving tank (1).

3. The raw material dissolving apparatus for pyromellitic dianhydride according to claim 2, characterized in that: The disintegration structure (26) includes a second connecting seat (261), which is internally fixedly installed on the outer wall of the rotating shaft (22). Several inclined plates (262) are arranged in a ring on the outer wall of the second connecting seat (261). The outer wall of each inclined plate (262) has mounting holes (263). A movable rod (264) is movably connected to the outer wall of each inclined plate (262) through the mounting holes (263). A gravity ball (265) is fixedly installed at the bottom end of the movable rod (264). The outer wall of the inclined plate (265) is in contact with the inner wall of the V-shaped bucket (27). The outer wall of the inclined plate (262) is movably connected to the second movable rod (266) through the mounting hole (263). The bottom end of the second movable rod (266) is fixedly installed with a push plate (267). The outer wall of the push plate (267) is in contact with the inner wall of the V-shaped bucket (27). One end of the push plate (267) is fixedly installed with a third movable rod (268). The top end of the third movable rod (268) is movably connected to the outer wall of the inclined plate (262) through the mounting hole (263).

4. The raw material dissolving apparatus for pyromellitic dianhydride according to claim 3, characterized in that: The inner wall of the dissolving tank (1) is provided with an annular groove (3), and a V-shaped hopper (27) is movably connected inside the annular groove (3). The bottom end of the dissolving tank (1) is fixedly connected to a discharge pipe (4), the top end of the dissolving tank (1) is fixedly connected to a feed pipe (5), and a programmable controller (6) is fixedly installed on the top end of the dissolving tank (1).

5. The raw material dissolving apparatus for pyromellitic dianhydride according to claim 4, characterized in that: The temperature controller (134) and temperature sensor (136) are electrically connected to the programmable controller (6), and the drive motor (21) is electrically connected to the programmable controller (6).

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