一种多功能真空泵

Abstract

本实用新型涉及真空泵技术领域，具体公开了一种多功能真空泵，包括驱动电机、齿轮传动组、泵壳体与设置在泵壳体内的转子组，齿轮传动组位于转子组的两端，所述驱动电机驱动齿轮传动组带动转子组转动，还包括：转子内冷却系统，所述转子内冷却系统包括输送管体；内循环驱动结构，所述内循环驱动结构包括设置在驱动电机与泵壳体之间的前连接壳体；外循环换热系统，所述外循环换热系统包括外换热结构与排气换热结构；外循环驱动结构，所述外循环驱动结构包括后连接壳体。本实用新型实现转子内部以及泵壳体等其他部件的散热，同时提供换热功能，实现稳定有效的循环散热效果。

Claims

1. A multifunctional vacuum pump, comprising a drive motor, a gear transmission assembly, a pump housing, and a rotor assembly disposed within the pump housing, wherein the gear transmission assembly is located at both ends of the rotor assembly, and the drive motor drives the gear transmission assembly to rotate the rotor assembly, characterized in that, Also includes: The rotor internal cooling system includes a conveying pipe body for the flow of a first cooling medium. The conveying pipe body extends into the rotor assembly, and a return channel is provided between the conveying pipe body and the inner wall of the rotor assembly for the return of the first cooling medium. An internal circulation drive structure includes a front connecting housing disposed between a drive motor and a pump housing. A first pump group is disposed inside the front connecting housing. The first pump group is driven by a gear transmission group. The first pump group circulates and draws a first cooling medium from the front connecting housing to the delivery pipe. The return channel is connected to the front connecting housing. An external circulation heat exchange system, comprising an external heat exchange structure and an exhaust heat exchange structure, wherein the external heat exchange structure is used to exchange heat with the second cooling medium inside the pump housing, and the exhaust heat exchange structure is used to exchange heat with the gas discharged from the pump housing; An external circulation drive structure includes a rear connecting housing, within which a second pump body is disposed. The second pump body is driven by a gear transmission set and is used to drive a second cooling medium to circulate between the pump housing and the external heat exchange structure.

2. A multi-functional vacuum pump according to claim 1, characterized in that: The rotor assembly includes two meshing screw rotors. Each screw rotor includes a rotor body and a first blade and a second blade spirally wound around the rotor body. The first blade and the second blade rotate in opposite directions and are mirror images of each other. The first blade and the second blade do not intersect and form an air intake end at the middle position of the two rotor bodies, and form an exhaust end near the two ends of the rotor body. The pitch of the first blade gradually decreases from the middle position of the rotor body to the position away from the middle position of the rotor body, and the thickness also gradually decreases. The pump housing has an air inlet at the upper end and two exhaust ports at the lower end. The positions of the air inlets correspond to and are connected to the positions of the air inlet ends, and the positions of the exhaust ports correspond to and are connected to the positions of the exhaust ends. The rotor body has inward recesses at both ends to form cooling chambers, which are coaxially arranged with the rotor body. The rotor body has connecting pipes at both ends, which cover and communicate with the cooling chamber. The connecting pipes have liquid passages, and one end of the liquid passage facing the cooling chamber forms an outlet. A return outlet is provided outside the outlet. The conveying pipe passes through the liquid passage and exits through the outlet. The conveying pipe is in contact with the outlet. A return channel is formed between the outer wall of the conveying pipe and the inner wall of the liquid passage. The return outlet is connected to the cooling chamber and the return channel.

3. A multi-functional vacuum pump according to claim 2, characterized in that: The front connecting housing has a space for accommodating the first cooling medium. A protruding plate is provided inside the front connecting housing. A medium channel is provided inside the protruding plate, and a first liquid inlet and a first liquid outlet are formed on the front connecting housing and the protruding plate. The first liquid outlet is connected to the delivery pipe. A first transmission gear is provided on the convex plate. The first transmission gear is driven to rotate by a gear transmission group. The first pump group is driven to move by the first transmission gear. The first pump group is located inside the convex plate. A first return hole is provided on the convex plate. An inlet channel and an outlet channel are provided inside the convex plate. The inlet channel and the outlet channel are located on both sides of the first pump group. The inlet channel is connected to the first return hole. The outlet channel is connected to the filter. A first main hole is provided on the outside of the front connecting housing. The first main hole is connected to the filter and to the auxiliary heat exchanger. The first liquid inlet is connected to the auxiliary heat exchanger through a pipeline.

4. A multi-functional vacuum pump according to claim 3, characterized in that: The filter includes a main housing, a filter cartridge is disposed inside the main housing, the filter cartridge is provided with filter holes, a cover plate is provided on the filter cartridge to close the main housing, the cover plate is provided with a hole communicating with the interior of the main housing, the hole is located on the outside of the filter cartridge, and a first connector is provided on the cover plate, the first connector communicating with the interior of the filter cartridge and communicating with a first main hole.

5. A multifunctional vacuum pump according to claim 3, characterized in that: The external heat exchange structure includes a heat exchange main body and a secondary housing. The heat exchange main body includes an outer tube and a plurality of heat exchange tubes disposed within the outer tube. The two ends of the outer tube are for the inflow and outflow of heat exchange medium, and the heat exchange medium flows through the heat exchange tubes. The auxiliary housing is mounted on the outer tube body. The auxiliary housing has an inflow cavity, and the inflow cavity is provided with multiple inflow joints for the inflow of the second cooling medium. The inflow cavity is connected to the outer tube body. An outlet is provided at the bottom of the outer tube body for the second cooling medium to flow out. Part of the second cooling medium flows to the auxiliary heat exchanger.

6. A multi-functional vacuum pump according to claim 5, characterized in that: The exhaust heat exchange structure includes a heat exchange body and a vent pipe. The vent pipe is disposed inside the outer pipe and wrapped around the outside of the heat exchange tube. The vent pipe is connected to the exhaust port and the inside of the pump housing. The vent pipe is used to transport gas and spray the heat-exchanged gas into the pump housing to cool the rotor assembly.

7. A multi-functional vacuum pump according to claim 6, characterized in that: A second transmission gear is provided inside the rear connecting housing. The second transmission gear is driven to rotate by a gear transmission group. The second pump body is driven to move by the second transmission gear. The second pump body includes a transmission shaft, an outer magnet, an isolation sleeve, and an inner magnet, which are disposed inside the rear connecting housing. The transmission shaft drives the outer magnet to rotate, and the outer magnet drives the inner magnet to rotate. The inner magnet is connected to the impeller. The impeller is disposed in the liquid supply chamber inside the rear connecting housing. The liquid supply chamber is connected to the outlet, the auxiliary heat exchanger, and the pump housing.

8. A multi-functional vacuum pump according to claim 1, characterized in that: It also includes a shaft seal structure, which is sleeved on the connecting pipe body. The shaft seal structure includes a shaft seat and a collar coaxially embedded in the shaft seat. A sealing assembly is provided inside the collar. The sealing assembly includes a main partition plate. Two first sealing rings are symmetrically arranged on both sides of the main partition plate. A secondary partition plate is attached to the outer side of the two first sealing rings. A second sealing ring is arranged on the outer side of the secondary partition plate. The first sealing rings and the second sealing rings have lips extending outward from the middle. The lips on both sides of the main partition plate face opposite directions.

9. A multi-functional vacuum pump according to claim 8, characterized in that: The shaft seal structure is provided with a vent hole, which passes through the shaft seat, the collar and the main partition plate. The vent hole is used to fill gas, and the gas passes between the two first sealing rings.

10. A multi-functional vacuum pump according to claim 1, characterized in that: The external circulation heat exchange system is connected to an external cooling source, which provides the heat exchange medium via a drive motor.

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