Cooling structure of vacuum pump

Abstract

The utility model discloses a cooling structure of a vacuum pump, which comprises a pump body, a rotor chamber is arranged in the pump body, a cavity is arranged in the pump body, and the cavity is arranged around the rotor chamber to form a cooling flow channel. A cooling assembly is arranged on the pump body and comprises an end cover plate arranged on the pump body, and the end cover plate is used for sealing an upper opening of a cooling flow channel; the cooling pipe group is detachably arranged below the end cover plate, the cooling pipe group is arranged above the rotor chamber, the cooling pipe group comprises main pipe bodies, connecting pipe bodies and joint pipes, the plurality of main pipe bodies are arranged in parallel and at intervals, the connecting pipe bodies are arranged between the two adjacent main pipe bodies and communicate the two main pipe bodies, and the joint pipes are connected with the connecting pipe bodies. The two joint pipes are respectively arranged on the main pipe body at the head end and the tail end, are communicated with the outside and are used for inputting and outputting a cooling medium. The integral structure is stable, the use safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum pump technology, and specifically relates to a cooling structure for a vacuum pump. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container to obtain a vacuum. A Roots vacuum pump, for example, uses a bladed rotor to achieve variable-volume evacuation. The cooling structure of the vacuum pump disclosed in patent CN217539013U includes a pump body, a first cooling assembly, a gearbox, and a second cooling assembly. The pump body includes an outer shell and an inner shell, which are separated and form a cooling chamber. The inner shell contains a rotor chamber. The first cooling assembly includes a first cover plate and a coil. The first cover plate has a first liquid inlet and a first liquid outlet and covers the outer shell. The two ends of the coil are respectively inserted into the first liquid inlet and the first liquid outlet, and the coil's body is located in the cooling chamber and wrapped around the outer periphery of the inner shell. The second cooling assembly includes a second cover plate and a cooling circuit pipe. The second cover plate has a second liquid inlet and a second liquid outlet. The two ends of the cooling circuit pipe are respectively inserted into the second liquid inlet and the second liquid outlet, and the cooling circuit pipe's body extends into the gearbox. The applicant's prior cooling structure uses coils wrapped around the outer perimeter of the inner shell. To achieve this, flexible hoses are used. However, during pump operation, the water moving within the hoses causes vibrations, resulting in friction between the coils and between the coils and the inner shell, which poses a risk of leakage. Utility Model Content

[0003] This invention aims to overcome the shortcomings of existing technologies by providing a cooling structure for a safe vacuum pump.

[0004] The present invention solves the technical problem by adopting the following technical solution: a cooling structure for a vacuum pump, comprising a pump body, wherein the pump body has a rotor chamber, and a cavity is provided within the pump body, the cavity surrounding the rotor chamber and forming a cooling flow channel; a cooling assembly is provided on the pump body, the cooling assembly comprising:

[0005] An end cover plate is provided on the pump body, the end cover plate being used to close the upper opening of the cooling channel;

[0006] A detachable cooling pipe assembly is provided below the end cover plate. The cooling pipe assembly is located above the rotor chamber. The cooling pipe assembly includes a main pipe body, a connecting pipe body, and a connector pipe. Multiple main pipe bodies are arranged in parallel and spaced apart. The connecting pipe body is located between two adjacent main pipe bodies and connects the two main pipe bodies. Two connector pipes are respectively located on the main pipe bodies at the beginning and end. The connector pipes are connected to the outside and used to input and output cooling medium.

[0007] In several embodiments, the connecting pipe is U-shaped and inclined.

[0008] In several implementations, there is a height difference between two adjacent main bodies.

[0009] In several embodiments, two connecting pipes located at both ends of the same main body have an included angle greater than 90°, and the connecting pipes located on the same side are arranged in parallel.

[0010] In several embodiments, the end cover plate is provided with a positioning groove, and the positioning groove is provided with an adapter component, which is used to connect the connector tube to the outside.

[0011] In several embodiments, the adapter assembly includes a locking member and an adapter, the locking member being disposed in a positioning groove, and the adapter portion passing through the locking member and the end cover plate and engaging with the connector tube.

[0012] In several embodiments, the main tube body is provided with helical blades distributed along its axial direction.

[0013] This utility model has the following beneficial effects:

[0014] This utility model adopts an external cooling structure, and the cooling pipe assembly is made of copper pipe. The overall structure is stable and not easy to shake, avoiding water leakage caused by friction, thus meeting the requirements of safety and service life. Attached Figure Description

[0015] The accompanying drawings described herein are for illustrative purposes only and do not represent all possible implementations, nor should they be considered as limiting the scope of this invention.

[0016] Figure 1 The overall structure of the cooling structure of the vacuum pump in this embodiment is schematically shown;

[0017] Figure 2 schematically shown Figure 1 The explosive structure;

[0018] Figure 3 schematically shown Figure 2 Enlarged structure of the intermediate cooling pipe assembly;

[0019] Figure 4 schematically shown Figure 3 The structure viewed from the side;

[0020] Figure 5 schematically shown Figure 2 Enlarged structure of the middle cover plate. Detailed Implementation

[0021] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] like Figures 1-5 As shown, the cooling structure of the vacuum pump provided in this embodiment mainly includes a pump body 10 and a cooling component 20 and a transfer component 30 disposed on the pump body 10. The pump body 10 is cooled by circulating water through the cooling component 20 and the transfer component 30.

[0024] Specifically, the pump body 10 has a rotor chamber 11, and the pump body 10 is provided with a cavity, which surrounds the rotor chamber 11 and forms a cooling channel 12. The cooling channel 12 can be vented with air for air cooling, and the upper end of the cooling channel 12 has an opening.

[0025] In addition, the cooling assembly 20 includes an end cover plate 21 disposed on the pump body 10 and a detachable cooling pipe assembly 22 disposed below the end cover plate 21. The end cover plate 21 is used to close the upper opening of the cooling channel 12, and the cooling pipe assembly 22 performs heat exchange and cooling.

[0026] The cooling pipe assembly 22 is located above the rotor chamber 11. The cooling pipe assembly 22 includes a main pipe body 221, a connecting pipe body 222, and a connector pipe 223. Multiple main pipe bodies 221 are arranged in parallel and spaced apart. The connecting pipe body 222 is arranged between two adjacent main pipe bodies 221 and connects the two main pipe bodies 221. Two connector pipes 223 are respectively arranged on the main pipe bodies 221 at both ends. The connector pipes 223 are connected to the outside and used to input and output cooling media such as water. That is, one connector pipe 223 is used as a water inlet and the other is used as a water outlet.

[0027] The connecting pipe 222 is U-shaped and inclined, so there is a height difference between two adjacent main pipes 221. The two connecting pipes 222 located at both ends of the same main pipe 221 have an included angle of more than 90°, and the connecting pipes 222 located on the same side are arranged in parallel. This structure can improve the heat exchange range and heat exchange efficiency of the cooling pipe group 22.

[0028] Meanwhile, the main body 221 is provided with spiral blades (not shown in the figure) distributed along its axial direction, which can reduce the flow velocity and increase the heat exchange area.

[0029] The end cover plate 21 is provided with a positioning groove 211, and the adapter component 30 is provided on the positioning groove 211. The adapter component 30 is used to connect the connector pipe 223 and the external water source for circulating heat exchange and cooling. The adapter component 30 includes a locking member 31 and an adapter 32. The locking member 31 is provided in the positioning groove 211. The adapter 32 partially passes through the locking member 31 and the end cover plate 21 and is inserted into the connector pipe 223. The locking member 31 can be a nut structure. One end of the adapter 32 is a tubular structure with external threads that can be screwed onto the locking member 31 for fixation.

[0030] The scope of this utility model is not limited by the embodiments described above, but by the appended claims and their equivalents.

[0031] The terminology used herein is intended to explain the embodiments and is not intended to limit and / or restrict the present invention. It should be understood that the terms "front," "rear," "left," "right," "head," "tail," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing the present invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Claims

1. A cooling structure for a vacuum pump, comprising a pump body (10), wherein the pump body (10) has a rotor chamber (11), and wherein a cavity is provided within the pump body (10), the cavity surrounding the rotor chamber (11) and forming a cooling channel (12); characterized in that, A cooling assembly (20) is provided on the pump body (10), and the cooling assembly (20) includes: An end cover plate (21) is provided on the pump body (10) to close the upper opening of the cooling channel (12); A detachable cooling pipe assembly (22) is provided below the end cover plate (21). The cooling pipe assembly (22) is located above the rotor chamber (11). The cooling pipe assembly (22) includes a main pipe body (221), a connecting pipe body (222), and a connector pipe (223). Multiple main pipe bodies (221) are arranged in parallel and spaced apart. The connecting pipe body (222) is arranged between two adjacent main pipe bodies (221) and connects the two main pipe bodies (221). Two connector pipes (223) are respectively arranged on the main pipe bodies (221) at the beginning and end ends. The connector pipes (223) are connected to the outside and used to input and output cooling medium.

2. The cooling structure of a vacuum pump according to claim 1, characterized in that, The connecting pipe (222) is U-shaped and inclined.

3. The cooling structure for a vacuum pump according to claim 1, characterized in that, There is a height difference between two adjacent main bodies (221).

4. The cooling structure for a vacuum pump according to claim 2, characterized in that, Two connecting pipes (222) located at both ends of the same main pipe (221) have an included angle greater than (90)° and are arranged in parallel on the same side.

5. The cooling structure of a vacuum pump according to claim 1, characterized in that, The end cover plate (21) is provided with a positioning groove (211), and the positioning groove (211) is provided with a transition component (30), which is used to connect the connector pipe (223) and the outside.

6. The cooling structure of a vacuum pump according to claim 5, characterized in that, The adapter assembly (30) includes a locking member (31) and an adapter (32). The locking member (31) is disposed in the positioning groove (211). The adapter (32) partially passes through the locking member (31) and the end cover plate (21) and is inserted into the connector tube (223).

7. The cooling structure for a vacuum pump according to claim 1, characterized in that, The main body (221) is provided with helical blades distributed along its axial direction.

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