Efficient double-heat-preservation fluorine-lined magnetic drive pump

Abstract

The utility model discloses an efficient double heat preservation fluorine lining magnetic drive pump, and particularly relates to the technical field of magnetic drive pumps, the efficient double heat preservation fluorine lining magnetic drive pump comprises a pump body, a heat preservation shell is installed at the rear end of the heat preservation shell, the pump body is welded outside the heat preservation shell, and a first heat preservation cavity is formed between the pump body and the heat preservation shell. According to the efficient double-heat-preservation fluorine-lined magnetic drive pump, heat preservation media can circulate through the two cavities, the temperature of the overflowing position is kept at the needed temperature, it is guaranteed that the heat preservation media are arranged outside all the overflowing positions in the pump cavity to keep the temperature, and the heat preservation effect of the pump is improved; a cooling copper pipe is connected to a mechanical seal cooling water circulating pipeline, so that the possibility of temperature rise of the bearing box can be further reduced through the copper pipe; the thermal insulation fluorine-lined magnetic drive pump with the structure not only improves the temperature transfer efficiency and the thermal insulation effect when the fluorine-lined magnetic drive pump conveys a medium needing thermal insulation, but also protects other mechanical parts from being influenced by high temperature, and the service life of the pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of magnetic pump technology, and in particular to a high-efficiency, double-insulated fluoropolymer-lined magnetic pump. Background Technology

[0002] In the chemical industry, some media need to be kept at a certain temperature during production and transportation, so insulation of the transportation equipment is essential.

[0003] The original, simple insulated fluoropolymer-lined magnetic pump only has an insulation shell installed at the pump body location. Its insulation effect can generally only guarantee the temperature of the medium inside the pump chamber, but cannot take care of the inside of the rear chamber sleeving. Therefore, the medium in the rear chamber will crystallize due to the decrease in temperature, affecting the normal operation of the pump.

[0004] Based on the original insulated fluoropolymer-lined magnetic pump, an insulation shell was added to the middle support to keep the temperature of the partition cavity. However, the insulation cavity of this structure is too far from the partition, resulting in low insulation efficiency. At the same time, due to the increase in the temperature of the support, the temperature of the bearing housing or motor connected to it also increases due to heat conduction, affecting the stable operation of these parts. Utility Model Content

[0005] This invention, based on the original insulated fluoropolymer-lined magnetic pump, features a new structure that modifies the insulation structure of the partition cavity. It adopts a closed cavity, allowing the insulation medium to directly contact the partition, thus maximizing the temperature of the partition cavity. To prevent leakage from the insulation cavity, a mechanical seal is installed between the insulation cavity and the bearing housing. Cooling water circulation ensures the stable operation of the mechanical seal, and the cooling water of the mechanical seal can also cool the bearing housing part whose temperature rises due to heat conduction through the cooling copper pipe.

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

[0007] A high-efficiency, double-insulated fluoropolymer-lined magnetic pump includes an insulation shell, a pump cover mounted on the rear end of the insulation shell, a pump body welded to the outside of the insulation shell, a first insulation cavity formed between the pump body and the insulation shell, an insulation bracket fixedly mounted on the rear end of the pump cover, an intermediate connecting bracket fixedly mounted on the rear end of the insulation bracket by bolts, a second insulation cavity formed between the intermediate connecting bracket, the insulation bracket, and the pump cover, and a bearing housing assembly fixedly mounted on the rear end of the intermediate connecting bracket by bolts, the bearing housing assembly containing...

[0008] The assembly includes a pump shaft, the front end of which extends through and into a central connecting bracket and is fixedly mounted with an external magnetic coupling. A double-end mechanical seal, fixedly connected to the central connecting bracket, is fitted around the pump shaft at the external location of the pump shaft. A second inlet pipe is located at the lower part of the insulation shell, and a second outlet pipe is located at the upper part of the insulation shell. A third inlet pipe is located at the upper part of the insulation bracket, and a third outlet pipe is located at the bottom of the insulation bracket. A cooling copper pipe is installed inside the bearing housing assembly. A second connecting pipe connects the third inlet pipe and the second outlet pipe. A first connecting pipe is fixedly mounted at the top of the double-end mechanical seal, and a first inlet pipe is located at the bottom of the double-end mechanical seal. Both ends of the cooling copper pipe penetrate the bearing housing assembly, with one end of the cooling copper pipe fixedly connected to the end of the first connecting pipe furthest from the double-end mechanical seal. The other end of the cooling copper pipe is fixedly mounted with a first outlet pipe.

[0009] Preferably, the second inlet pipe and the second outlet pipe are fixed to the insulation shell by welding, the third inlet pipe and the third outlet pipe are connected to the insulation bracket by threaded connection, the first inlet pipe and the first connecting pipe are connected to the double-end mechanical seal by threaded connection, and the first connecting pipe and the first outlet pipe are connected to the cooling copper pipe by threaded connection.

[0010] Connected together.

[0011] Preferably, the second inlet pipe is for insulation medium, and the first inlet pipe is for cooling medium.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model discloses a high-efficiency, double-insulated fluoropolymer-lined magnetic drive pump. This novel insulated fluoropolymer-lined magnetic drive pump allows the insulation medium to circulate through two chambers, maintaining the temperature of the flow parts at the required level. It ensures that all flow points inside the pump chamber are externally insulated by the insulation medium, resulting in high heat transfer efficiency and improved pump insulation. Furthermore, a double-end mechanical seal is used to seal the insulation chamber. The cooling water for the mechanical seal not only prevents dry friction of the double-end mechanical seal but also prevents temperature rise in the bearings due to heat conduction through the pump shaft, thus preventing malfunction. A cooling copper pipe is connected to the cooling water circulation pipeline of the mechanical seal, further reducing the possibility of bearing housing overheating. This structure of the insulated fluoropolymer-lined magnetic drive pump not only improves the temperature transfer efficiency and insulation effect when conveying media requiring insulation, but also protects other mechanical components from high temperatures, extending the pump's service life. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is an enlarged schematic diagram of point A in Figure 1 of this utility model.

[0016] In the diagram: 1. Insulation shell; 2. Pump body; 3. Pump cover; 4. Insulation bracket; 5. External magnetic coupling; 6. Intermediate connecting bracket; 7. Double-end mechanical seal; 8. Cooling copper pipe; 9. Bearing housing assembly; 10. Pump shaft; 11. First inlet pipe; 12. First connecting pipe; 13. First outlet pipe; 14. Second inlet pipe; 15. Second outlet pipe; 16. Second connecting pipe; 17. Third inlet pipe; 18. Third outlet pipe. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] As shown in Figure 1-2, a high-efficiency double-insulated fluoropolymer-lined magnetic pump includes an insulation shell 1, a pump cover 3 installed at the rear end of the insulation shell 1, a pump body 2 welded to the outside of the insulation shell 1, forming a first insulation cavity between the pump body 2 and the insulation shell 1, an insulation bracket 4 fixedly installed at the rear end of the pump cover 3, and an intermediate connecting bracket 6 fixedly installed at the rear end of the insulation bracket 4 by bolts, forming a second insulation cavity between the intermediate connecting bracket 6, the insulation bracket 4, and the pump cover 3, a bearing housing assembly 9 fixedly installed at the rear end of the intermediate connecting bracket 6 by bolts, a pump shaft 10 installed inside the bearing housing assembly 9, the front end of the pump shaft 10 extending through into the intermediate connecting bracket 6 and fixedly installed with an external magnetic coupling 5, a double-end mechanical seal 7 fixedly connected to the intermediate connecting bracket 6 and fitted outside the pump shaft 10 at the intermediate connecting bracket 6, and a second inlet pipe 14 provided at the lower part of the insulation shell 1. The upper part is provided with a second outlet pipe 15, the upper part of the insulation bracket 4 is provided with a third inlet pipe 17, the bottom of the insulation bracket 4 is provided with a third outlet pipe 18, the bearing housing assembly 9 is internally installed with a cooling copper pipe 8, the third inlet pipe 17 and the second outlet pipe 15 are connected by a second connecting pipe 16, the top of the double-end mechanical seal 7 is fixedly provided with a first connecting pipe 12, the bottom of the double-end mechanical seal 7 is provided with a first inlet pipe 11, both ends of the cooling copper pipe 8 penetrate the bearing housing assembly 9, and one end of the cooling copper pipe 8 is fixedly connected to the end of the first connecting pipe 12 away from the double-end mechanical seal 7.

[0019] The other end of 8 is fixedly installed with a first outlet pipe 13. The insulation medium enters the first insulation chamber from the second inlet pipe 14, then enters the second connecting pipe 16 through the second outlet pipe 15, and then enters the third inlet pipe 17 from the second connecting pipe 16, then enters the second insulation chamber, and finally exits from the fourth outlet pipe. The insulation medium circulates through the two chambers to ensure that the outside of all flow points inside the pump chamber is kept warm by the insulation medium, thereby improving the insulation effect of the pump. A double-end face flushing mechanical seal is installed at the intermediate connecting bracket 6. The cooling medium enters the double-end face mechanical seal 7 from the first inlet pipe 11 to cool the pump shaft 10, and then is transported from the first connecting pipe 12 to the cooling copper pipe 8 to cool the inside of the bearing housing. Then it is discharged from the first outlet pipe 13. Through the circulation of cooling water, the temperature of the pump shaft 10 can be reduced. At the same time, the cooling copper pipe 8 in the bearing housing can also cool the pump shaft 10. It can also indirectly remove heat from other parts through cooling lubricating oil, allowing the bearing to operate normally under suitable temperature conditions, greatly extending the bearing's service life and reducing maintenance costs.

[0020] The second inlet pipe 14 and the second outlet pipe 15 are fixed to the insulation shell 1 by welding, making the connection more stable. The third inlet pipe 17 and the third outlet pipe 18 are connected to the insulation bracket 4 by threaded connection, which facilitates subsequent disassembly and maintenance. The first inlet pipe 11 and the first connecting pipe 12 are connected to the double-end mechanical seal 7 by threaded connection, which facilitates subsequent disassembly and maintenance. The first connecting pipe 12 and the first outlet pipe 13 are connected to the cooling copper pipe 8 by threaded connection, which facilitates later disassembly and maintenance.

[0021] The working principle of this utility model is as follows: The heat-insulating medium enters the first heat-insulating chamber from the second inlet pipe 14, and then sequentially enters the second heat-insulating chamber through the second outlet pipe 15, the second connecting pipe 16, and the third inlet pipe 17, and finally exits from the third outlet pipe 18. The heat-insulating medium circulates through the two chambers, ensuring that the outside of all flow points inside the pump chamber is kept warm by the heat-insulating medium, thereby improving the heat insulation effect of the pump. A double-end face flushing mechanical seal is installed at the intermediate connecting bracket 6. The cooling medium enters the double-end face mechanical seal 7 from the first inlet pipe 11 to cool the pump shaft 10, and then is transported from the first connecting pipe 12 to the cooling copper pipe 8 to cool the inside of the bearing housing. It is then discharged from the first outlet pipe 13. Through the circulation of cooling water, the temperature of the pump shaft 10 can be reduced. At the same time, the cooling copper pipe 8 in the bearing housing can also cool other components.

[0022] The heat transferred from the bearing is indirectly carried away by the cooling lubricating oil, allowing the bearing to operate normally under suitable temperature conditions, greatly extending the bearing's service life and reducing maintenance costs.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high efficiency double insulated fluorine-lined magnetic drive pump, characterized in that: The utility model provides a heat preservation shell (1), the pump cover (3) is installed to the rear end of heat preservation shell (1), the pump body (2) is welded outside heat preservation shell (1), the first heat preservation cavity is formed between pump body (2) and heat preservation shell (1), the heat preservation support (4) is fixedly installed to the rear end of pump cover (3), the rear end of heat preservation support (4) is fixedly installed through bolt and is connected with intermediate support (6), the second heat preservation cavity is formed between intermediate support (6), heat preservation support (4) and pump cover (3), the rear end of intermediate support (6) is fixedly installed through bolt and is connected with bearing box assembly (9), the pump shaft (10) is installed inside bearing box assembly (9), the outer magnetic coupling (5) is fixedly installed to the front end of pump shaft (10) and extends to intermediate support (6) and is connected with intermediate support (6), the double end face mechanical seal (7) of fixed connection is sleeved with pump shaft (10) outside intermediate support (6), the second inlet pipe (14) is arranged at the lower part of heat preservation shell (1), the second outlet pipe (15) is arranged at the upper part of heat preservation shell (1), the third inlet pipe (17) is arranged at the upper part of heat preservation support (4), the third outlet pipe (18) is arranged at the bottom of heat preservation support (4), the cooling copper pipe (8) is installed inside bearing box assembly (9), the second connecting pipe (16) is connected between the third inlet pipe (17) and the second outlet pipe (15), the first connecting pipe (12) is fixedly arranged at the top of double end face mechanical seal (7), the first inlet pipe (11) is arranged at the bottom of double end face mechanical seal (7), the both ends of cooling copper pipe (8) are penetrated through bearing box assembly (9), and one end of cooling copper pipe (8) is fixedly connected with the end of first connecting pipe (12) away from double end face mechanical seal (7), the other end of cooling copper pipe (8) is fixedly installed with first outlet pipe (13).

2. The high efficiency double insulation fluorine-lined magnetic drive pump according to claim 1, characterized in that: The second inlet pipe (14) and the second outlet pipe (15) are fixed together with the heat preservation shell (1) by welding, the third inlet pipe (17) and the third outlet pipe (18) are connected together with the heat preservation support (4) by screw connection, the first inlet pipe (11) and the first connecting pipe (12) are connected together with the double end face mechanical seal (7) by screw connection, the first connecting pipe (12) and the first outlet pipe (13) are connected together with the cooling copper pipe (8) by screw connection.

3. The high efficiency double insulation fluorine-lined magnetic drive pump according to claim 1, characterized in that: The second inlet pipe (14) enters heat preservation medium, and the first inlet pipe (11) enters cooling medium.

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