A stirring tank for producing large motor insulation coating liquid

Abstract

This utility model provides a stirring tank for producing insulating coating liquid for large motors, relating to the field of large motor insulating coating liquid production technology. It includes: a stirring tank for the coating liquid; an exhaust valve is installed on the upper surface of the sealing cover; the exhaust valve is connected to a gas storage tank via a gas guide pipe; the gas storage tank and a purification tank are fixedly installed on the right outer wall of the stirring tank; a first activated carbon adsorption plate and a second activated carbon adsorption plate are inserted into the inner side of the purification tank; a fan is fixed on the lower surface of the purification tank; an exhaust pipe is installed at the lower air outlet of the fan; a harmful gas detector is installed inside the exhaust pipe; a switching valve is connected to the lower end of the exhaust pipe; a circulation pipe is connected to the right valve port of the switching valve; and a stirrer is installed inside the stirring tank. This utility model solves the problem that the solvent in the mixing of insulating coating liquid for large motors is easily volatile, causing harmful gases in the existing stirring tank to be easily released into the external environment during normal exhaust, endangering the health of production personnel.

Description

Technical Field

[0001] This utility model relates to the field of production technology of insulating coating liquid for large motors, and specifically to a stirring kettle for producing insulating coating liquid for large motors. Background Technology

[0002] Large motor insulation coating fluid is an important material used in motor manufacturing and maintenance. Its main components include resin, solvent, and additives. Its function is to improve the electrical performance and mechanical strength of motors, and protect them from moisture, chemical corrosion, and mechanical damage. The production of large motor insulation coating fluid involves mixing, stirring, and reacting various raw materials in a specific ratio to obtain the desired coating fluid. This process involves the use of a stirred tank. However, the solvents used in the preparation of large motor insulation coating fluid are volatile, which can easily lead to the release of harmful gases from the stirred tank into the external environment during normal venting, posing a health risk to production personnel. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a stirred tank for producing insulating coating liquid for large motors is provided. This solves the problem that the solvent in the mixing of insulating coating liquid for large motors is easily volatile, which leads to the release of harmful gases from the stirred tank into the external environment during normal venting, endangering the health of production personnel.

[0004] To achieve the above objectives, a stirring vessel for producing insulating coating liquid for large motors is provided, comprising: a coating liquid stirring vessel, wherein a sealing cap is screwed and fixed to the upper end of the coating liquid stirring vessel.

[0005] An exhaust valve is installed on the upper surface of the sealing cover. The exhaust valve is connected to a gas storage tank through a gas guide pipe. A gas storage tank and a purification tank are fixedly installed on the outer right side of the coating liquid stirring tank. A first activated carbon adsorption plate and a second activated carbon adsorption plate are inserted into the inner side of the purification tank. A fan is fixed on the lower surface of the purification tank. An exhaust pipe is installed at the air outlet at the lower end of the fan. A harmful gas detector is installed inside the exhaust pipe. A switching valve is connected to the lower end of the exhaust pipe. A circulation pipe is connected to the valve port on the right side of the switching valve. A stirrer is installed in the inner cavity of the coating liquid stirring tank.

[0006] Furthermore, the lower surface of the coating liquid stirring vessel is welded with support legs, the inner wall of the coating liquid stirring vessel is provided with an anti-corrosion lining, and a heater is installed around the outside of the anti-corrosion lining.

[0007] Furthermore, a discharge pipe is provided on the lower end face of the coating liquid stirring tank, a frame is welded to the upper surface of the sealing cover, and a stirring motor is fixed on the surface of the frame.

[0008] Furthermore, the lower end of the stirring motor is connected to a stirrer via a stirring shaft, and a scraper is symmetrically mounted on the axial surface of the stirring shaft; and the scraper is in contact with the anti-corrosion lining.

[0009] Furthermore, a feed pipe is provided on the left side of the frame, a vent pipe is provided on the front side of the frame, and the exhaust valve is located on the right side of the frame.

[0010] Furthermore, the lower end of the gas storage tank is connected to a purification tank via a connecting pipe, and an electrically controlled valve is installed on the surface of the connecting pipe.

[0011] Furthermore, a front cover plate is screwed to the front end of the purification box; and the front cover plate is fixedly located in front of the first activated carbon adsorption plate and the second activated carbon adsorption plate.

[0012] Furthermore, the left valve port of the switching valve is set as an exhaust port, and the upper end of the circulation pipe is connected to the upper surface of the purification box; and the circulation pipe is connected to the inner cavity of the purification box.

[0013] The beneficial effects of this utility model are as follows: the stirred tank for producing large motor insulation coating liquid utilizes activated carbon adsorption plates in the purification chamber to adsorb harmful components in the exhaust gas of the stirred tank. The harmful gas detector monitors whether there are any residual harmful components in the purified gas. The switching valve controls the gas with residual harmful components to be sent back to the purification chamber for further purification until harmless gas is discharged. This achieves a stirred tank with gas purification function, which can effectively absorb and remove harmful gases generated during the mixing of large motor insulation coating liquid, prevent harmful gases from being directly discharged into the external environment, protect the life and health of production personnel, and improve the safety and environmental protection of the stirred tank. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the stirring kettle used for producing insulating coating liquid for large motors according to an embodiment of this utility model.

[0015] Figure 2 This is a front view cross-sectional structural diagram of the stirring kettle used for producing insulating coating liquid for large motors according to an embodiment of this utility model.

[0016] Figure 3 This is a front view cross-sectional structural diagram of the coating liquid stirring tank according to an embodiment of the present invention.

[0017] Figure 4 This is a front view cross-sectional schematic diagram of the reactive gas purification structure according to an embodiment of the present invention.

[0018] Figure 5 This is a side view of the purification box according to an embodiment of the present invention.

[0019] In the diagram: 1. Coating liquid mixing tank; 11. Support leg; 12. Discharge pipe; 13. Heater; 14. Corrosion-resistant lining; 2. Sealing cover; 21. Feed pipe; 22. Frame; 23. Vent pipe; 24. Exhaust valve; 3. Gas storage tank; 31. Gas guide pipe; 32. Electrically controlled valve; 33. Connecting pipe; 4. Purification tank; 41. Circulation pipe; 42. Fan; 43. Exhaust pipe; 44. Switching valve; 45. First activated carbon adsorption plate; 46. Second activated carbon adsorption plate; 47. Harmful gas detector; 48. Exhaust port; 49. Front cover plate; 5. Agitator; 51. Agitator motor; 52. Agitator shaft; 53. Scraper. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1 to 5 As shown, this utility model provides a stirring tank for producing insulating coating liquid for large motors, including: a coating liquid stirring tank 1, with a sealing cap 2 screwed to the upper end of the coating liquid stirring tank 1.

[0022] An exhaust valve 24 is installed on the upper surface of the sealing cover 2. The exhaust valve 24 is connected to the gas storage tank 3 through the gas guide pipe 31. The gas storage tank 3 and the purification tank 4 are fixedly installed on the outer right side of the coating liquid stirring tank 1. The first activated carbon adsorption plate 45 and the second activated carbon adsorption plate 46 are inserted into the inner side of the purification tank 4. A fan 42 is fixed on the lower surface of the purification tank 4. An exhaust pipe 43 is installed at the air outlet at the lower end of the fan 42. A harmful gas detector 47 is installed inside the exhaust pipe 43. A switching valve 44 is connected to the lower end of the exhaust pipe 43. A circulation pipe 41 is connected to the valve port on the right side of the switching valve 44. A stirrer 5 is installed in the inner cavity of the coating liquid stirring tank 1.

[0023] First, the raw materials such as resin and solvent for the large motor insulation coating liquid are added into the coating liquid stirring tank 1 through the feed pipe 21. The stirring motor 51 and heater 13 are started to stir and mix the solution in the coating liquid stirring tank 1. During heating and stirring, the gas in the tank expands and is discharged into the gas storage tank 1 through the exhaust valve 24. At this time, the electric control valve 32 opens, allowing the waste gas in the tank to flow into the purification tank 4. After being adsorbed and purified by the first activated carbon adsorption plate 45 and the second activated carbon adsorption plate 46 in the purification tank 4, it is transported to the exhaust pipe 43 by the fan 42. At this time, the harmful gas detector 47 detects in real time whether there are any harmful components remaining in the gas passing through the exhaust pipe 43. If there are no residues, it is discharged into the external environment through the left exhaust port 48 of the switching valve 44. If there are residues, the switching valve 44 rotates to switch the gas flow channel, allowing the gas to flow back into the purification tank 4 through the right-side duct 41 (the electric control valve 32 is closed during the return flow process) for purification again until there are no residues before being discharged.

[0024] In this embodiment, a support leg 11 is welded to the lower surface of the coating liquid stirring tank 1, and an anti-corrosion liner 14 is provided on the inner side wall of the coating liquid stirring tank 1. A heater 13 is installed around the outer side of the anti-corrosion liner 14. A discharge pipe 12 is provided on the lower end face of the coating liquid stirring tank 1, and a frame 22 is welded to the upper surface of the sealing cover 2. A stirring motor 51 is fixed on the surface of the frame 22.

[0025] In a preferred embodiment, the support leg 11 provides stable support for the coating liquid mixing vessel 1. The corrosion-resistant liner 14 is made of stainless steel and coated with a wear-resistant and corrosion-resistant coating. The heater 13 facilitates heating the ingredients of the large motor insulation coating liquid, ensuring that the ingredients are at a suitable temperature for mixing.

[0026] In this embodiment, the lower end of the stirring motor 51 is connected to the stirrer 5 via the stirring shaft 52, and the stirring shaft 52 is symmetrically mounted with scrapers 53; and the scrapers 53 are in contact with the anti-corrosion lining 14. A feed pipe 21 is provided on the left side of the frame 22, a vent pipe 23 is provided on the front side of the frame 22, and exhaust valves 24 are located on the right side of the frame 22.

[0027] In a preferred embodiment, the stirring motor 51 drives the stirrer 5 to rotate via the stirring shaft 52, causing the stirrer 5 to mix the solution in the vessel. Simultaneously, the scraper 53 also rotates, facilitating the adhesion of the solution to the vessel wall. The feed pipe 21 allows for the addition of the pre-mixed raw materials of the large motor insulation coating liquid into the coating liquid stirring vessel 1. The exhaust valve 24 facilitates the venting of expanding gas within the coating liquid stirring vessel 1.

[0028] In this embodiment, the lower end of the gas storage tank 3 is connected to the purification tank 4 via a connecting pipe 33, and an electrically controlled valve 32 is installed on the surface of the connecting pipe 33. A front cover plate 49 is screwed to the front end face of the purification tank 4; and the front cover plate 49 is fixedly located on the front side of the first activated carbon adsorption plate 45 and the second activated carbon adsorption plate 46. The valve port on the left side of the switching valve 44 is set as an exhaust port 48, and the upper end of the circulation pipe 41 is connected to the upper end face of the purification tank 4; and the circulation pipe 41 is connected to the inner cavity of the purification tank 4.

[0029] In a preferred embodiment, the gas storage tank 3 can temporarily store some of the gas discharged from the reactor, facilitating the waiting period until the gas in the purification tank 4 is purified. The front cover 49 can be removed to facilitate the removal and replacement of the inner first activated carbon adsorption plate 45 and the second activated carbon adsorption plate 46 (the adsorption material in the adsorption plate can be selected according to the harmful gases generated during the production process), allowing the first activated carbon adsorption plate 45 and the second activated carbon adsorption plate 46 to absorb the volatilized solvent gases. The exhaust port 48 on the left side of the switching valve 44 facilitates the discharge of purified gas to the external environment, while the circulation pipe 41 on the right side of the switching valve 44 discharges the incompletely purified gas back into the purification tank 4 for further purification, effectively facilitating the absorption and removal of harmful gases generated during the mixing of the large motor insulation coating liquid, and preventing harmful gases from being directly discharged into the external environment.

[0030] This invention relates to a stirred tank for the production of insulating coating liquid for large motors. It effectively solves the problem that the volatile solvent in the mixing of insulating coating liquid for large motors easily releases harmful gases into the external environment during normal venting, endangering the health of production personnel. This new stirred tank features gas purification capabilities, effectively absorbing and removing harmful gases generated during the mixing of insulating coating liquid for large motors, preventing direct release of harmful gases into the external environment, protecting the health of production personnel, and improving the safety and environmental friendliness of the stirred tank. It is suitable for use in the production of insulating coating liquid for large motors.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stirred tank for producing an insulation coating liquid for large electric machines, comprising: A coating liquid stirring vessel (1), wherein a sealing cap (2) is screwed to the upper end of the coating liquid stirring vessel (1), characterized in that: An exhaust valve (24) is installed on the upper surface of the sealing cover (2). The exhaust valve (24) is connected to a gas storage tank (3) through a gas guide pipe (31). A gas storage tank (3) and a purification tank (4) are fixedly installed on the outer right side of the coating liquid stirring tank (1). A first activated carbon adsorption plate (45) and a second activated carbon adsorption plate (46) are inserted into the inner side of the purification tank (4). A fan (42) is fixed on the lower surface of the purification tank (4). An exhaust pipe (43) is installed at the lower air outlet of the fan (42). A harmful gas detector (47) is installed inside the exhaust pipe (43). A switching valve (44) is connected to the lower end of the exhaust pipe (43). A circulation pipe (41) is connected to the valve port on the right side of the switching valve (44). A stirrer (5) is provided in the inner cavity of the coating liquid stirring tank (1).

2. The stirring tank for producing large motor insulation coating liquid according to claim 1, characterized in that, The lower surface of the coating liquid stirring tank (1) is welded with a support leg (11), the inner wall of the coating liquid stirring tank (1) is provided with an anti-corrosion lining (14), and a heater (13) is installed around the outside of the anti-corrosion lining (14).

3. The stirred tank for producing insulating coating liquid for large motors according to claim 1, characterized in that, The lower end face of the coating liquid stirring tank (1) is provided with a discharge pipe (12), and the upper surface of the sealing cover (2) is welded with a frame (22), and a stirring motor (51) is fixed on the surface of the frame (22).

4. The stirred tank for producing insulating coating liquid for large motors according to claim 3, characterized in that, The stirring motor (51) is connected to a stirrer (5) via a stirring shaft (52) at its lower end. A scraper (53) is symmetrically mounted on the stirring shaft (52); and the scraper (53) is in contact with the anti-corrosion lining (14).

5. The stirred tank for producing an insulation coating liquid for a large electric machine according to claim 3, characterized in that, The feed pipe (21) is provided on the left side of the frame (22), the vent pipe (23) is provided on the front side of the frame (22), and the exhaust valve (24) is located on the right side of the frame (22).

6. The stirring tank for producing large motor insulation coating liquid according to claim 1, wherein The lower end of the gas storage tank (3) is connected to the purification tank (4) through a connecting pipe (33), and an electric control valve (32) is installed on the surface of the connecting pipe (33).

7. The stirring tank for producing large motor insulation coating liquid according to claim 1, characterized in that, The front end of the purification box (4) is screwed with a front cover plate (49); and the front cover plate (49) is fixedly located on the front side of the first activated carbon adsorption plate (45) and the second activated carbon adsorption plate (46).

8. The stirring tank for producing large motor insulation coating liquid according to claim 1, wherein The left valve port of the switching valve (44) is set as the exhaust port (48), and the upper end of the circulation pipe (41) is connected to the upper end face of the purification box (4); and the circulation pipe (41) is connected to the inner cavity of the purification box (4).

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