Cooling device for exhaust port of roots pump

Abstract

The utility model relates to the field of vacuum pumps, in particular to an exhaust port cooling device of a roots pump, which is characterized in that planar mounting areas are arranged on two sides of an exhaust port of a pump casing and are used for attaching and fixing plate-shaped radiating fins, and the radiating fins are axially arranged along a pump body rotor and are positioned in a projection range of the pump body rotor along the vertical direction; guide grooves are formed in the contact faces of the cooling fins and the pump shell in the axial direction of the pump body rotor, and the cooling water pipe sequentially passes through the guide grooves of the cooling fins and is arranged in an S shape. According to the utility model, the cooling efficiency at the exhaust port of the roots vacuum pump is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of vacuum pumps, in particular to an exhaust port cooling device for a Roots pump. Background Art

[0002] Roots vacuum pump is a commonly used vacuum obtaining equipment. It can be connected in series with a variety of vacuum pumps to form a vacuum unit to provide the vacuum degree of the equipment. It is widely used in various industries such as medicine, chemical industry, aerospace, electronics, solar energy, metallurgy, food, etc.

[0003] The current structure of the existing Roots vacuum pump is as described in the application number "CN202110453255.3". When the Roots vacuum pump is working, a large amount of heat will be generated at its exhaust port due to the work of gas compression. The generated heat cannot be dissipated in time. Under long-term high-temperature conditions, it will have a certain impact on the matching accuracy of various components inside the equipment. In severe cases, it may even cause the Roots pump to get stuck or damaged. Therefore, it is urgent to solve this problem. Summary of the Invention

[0004] In order to avoid and overcome the technical problems existing in the prior art, the present invention provides a cooling device for the exhaust port of a Roots pump, which greatly improves the cooling efficiency at the exhaust port of a Roots vacuum pump.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A cooling device for the exhaust port of a Roots pump is provided. Flat mounting areas are provided on both sides of the exhaust port of the pump housing for plate-shaped heat sinks to be attached and fixed. The heat sinks are arranged axially along the pump rotor and are located within the projection range of the pump rotor in the vertical direction. Guide grooves are provided on the contact surfaces between the heat sinks and the pump housing along the axial direction of the pump rotor. Cooling water pipes pass through the guide grooves of each heat sink in sequence and are arranged in an S-shaped direction.

[0007] As a further solution of the present invention: the side of the heat sink away from the pump casing is divided into a fixed area and heat dissipation areas symmetrically arranged on both sides of the fixed area. The fixed area and the heat dissipation area are both arranged along the axial direction of the pump rotor. The surface of the heat dissipation area is evenly grooved along the axial direction of the pump rotor to form a fin-like structure. Bolt fixing holes are provided in the fixed area to facilitate bolt fixing of the heat sink to the pump casing.

[0008] As a further solution of the present invention: two sets of parallel guide grooves are provided on the contact surface between the heat sink and the pump housing. The two guide grooves on the heat sink correspond to the positions of the two heat dissipation zones, and the guide grooves match the cross-sectional shape of the cooling water pipe.

[0009] As a further solution of the present invention: the fixing area is evenly provided with at least two groups of bolt fixing holes along the length direction to achieve multi-point fixation of the heat sink.

[0010] As a further solution of the present invention: a temperature sensor for real-time monitoring of the temperature of the heat sink is installed on the fixing area.

[0011] As a further solution of the present invention: a water inlet joint and a drain joint are respectively arranged at both ends of the cooling water pipe, and the water inlet joint and the drain joint are connected to the same coolant source to realize the circulation flow of the cooling water.

[0012] As a further solution of the present invention: the heat sink is an aluminum plate, and the cooling water pipe is a stainless steel pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model separately provides flat mounting areas on both sides of the exhaust port of the pump casing for fixing detachable heat sinks, which can effectively improve the heat dissipation efficiency at the exhaust port. While the heat is dissipated by the added heat sink, a cooling water pipe is also installed through the guide groove of the heat sink. When the cooling water pipe is pressed by the heat sink, it contacts the pump casing and the heat sink at the same time, thereby taking away the heat of the heat sink and the pump casing, further improving the cooling effect. Moreover, since the heat sink is arranged along the axial direction of the rotor, it can also indirectly cool the rotor, greatly improving the cooling efficiency at the exhaust port of the Roots vacuum pump, so that the Roots pump can always run stably.

[0015] 2. The present invention rationally arranges the fixing area and the heat dissipation area on the surface of the heat sink. While the heat sink is fixed at multiple points in the fixing area by bolts, the heat dissipation effect can be further improved by arranging the heat dissipation fins in the heat dissipation area.

[0016] 3. The utility model has two sets of guide grooves at the bottom of the heat sink, and the guide grooves correspond to the upper and lower positions of the heat dissipation areas. When the cooling water pipe passes through, the two sets of heat dissipation areas can be cooled simultaneously to prevent uneven heat dissipation. While dissipating heat, the temperature of the heat sink surface is monitored in real time through a temperature sensor to prevent the Roots pump from overheating.

[0017] 4. The utility model connects the water inlet joint and the drain joint of the cooling water pipe to the same cooling source, so that the coolant circulates and the utilization rate of the cooling water is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a structural schematic diagram of the heat sink in the utility model.

[0020] In the picture:

[0021] 1. Pump housing; 2. Heat sink;

[0022] 21. Fixing area; 211. Bolt fixing hole; 212. Temperature sensor;

[0023] 22. heat dissipation area; 23. guide groove;

[0024] 3. Cooling water pipe; 31. Water inlet joint; 32. Drain joint. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-2 In an embodiment of the present invention, a cooling device for the exhaust port of a Roots pump is provided, and flat installation areas are provided on both sides of the exhaust port of a pump housing 1. A group of heat sinks 2 are respectively installed in the two groups of installation areas, and the heat sinks 2 are arranged in contact with the surface of the pump housing 1 in the installation area.

[0027] The heat sinks 2 are square plates made of aluminum. Both sets of heat sinks 2 are arranged axially along the rotor within the pump body, corresponding to the vertical positions of the two sets of rotors within the pump body. The two sets of heat sinks 2 are preferably located within the vertical projections of the corresponding rotors.

[0028] The side of the heat sink 2 away from the pump housing 1 includes a fixed area 21 and heat dissipation areas 22 located on both sides of the fixed area 21. The fixed area 21 and the heat dissipation area 22 are arranged parallel to the rotor axis. The two groups of heat dissipation areas 22 are preferably arranged symmetrically about the fixed area 21.

[0029] The fixing area 21 is provided with bolt fixing holes 211 in the vertical direction, so that the pump housing 1 is connected and fixed through the bolt fixing holes 211. The bolt fixing holes 211 are preferably arranged in three groups and evenly distributed along the length of the fixing area 21. A temperature sensor 212 is also installed on the fixing area 21 to detect the temperature of the heat sink 2 in real time.

[0030] The surface of the heat dissipation area 22 is evenly grooved along the axis of the rotor. The grooves form the surface of the heat dissipation area 22 into a heat dissipation fin shape, thereby improving the heat dissipation effect.

[0031] Guide grooves 23 are defined on the mating surfaces of the heat sink 2 and the pump housing 1. These grooves are arranged axially along the rotor, and their cross-sectional shape corresponds to that of the cooling water pipe 3, allowing for passage of the cooling water pipe 3. The heat sink 2 preferably has two sets of parallel guide grooves 23, corresponding to the upper and lower positions of the two heat dissipation zones 22.

[0032] The cooling water pipe 3 is a stainless steel rigid tube that runs in an S-shaped pattern, passing through the two sets of guide grooves 23 of the two sets of heat sinks 2. The cooling water pipe 3 is compressed and fixed to the pump housing 1 by the heat sinks 2. An inlet connector 31 and a drain connector 32 are located at each end of the cooling water pipe 3. These connectors are connected to the cooling water source, which is pumped through the cooling water, allowing it to circulate and maintain continuous cooling.

[0033] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0034] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

Claims

1. A cooling device for the exhaust port of a Roots pump, characterized in that: Planar mounting areas are provided on both sides of the exhaust port of the pump housing (1) for the plate-shaped heat sinks (2) to be fitted and fixed. The heat sinks (2) are arranged along the axial direction of the pump rotor, and the heat sinks (2) are located within the projection range of the pump rotor along the vertical direction. Guide grooves (23) are provided on the contact surfaces between the heat sinks (2) and the pump housing (1) along the axial direction of the pump rotor, and the cooling water pipes (3) pass through the guide grooves (23) of each heat sink (2) in sequence and are arranged in an S-shaped direction.

2. A Roots pump exhaust port cooling device according to claim 1, characterized in that: The side of the heat sink (2) away from the pump housing (1) is divided into a fixed area (21) and heat dissipation areas (22) symmetrically arranged on both sides of the fixed area (21). The fixed area (21) and the heat dissipation area (22) are both arranged along the axial direction of the pump rotor. The surface of the heat dissipation area (22) is evenly grooved along the axial direction of the pump rotor to form a fin-shaped structure. The fixed area (21) is provided with bolt fixing holes (211) to facilitate bolt fixing of the heat sink (2) to the pump housing (1).

3. A Roots pump exhaust port cooling device according to claim 2, characterized in that: Two groups of parallel guide grooves (23) are provided on the contact surface between the heat sink (2) and the pump housing (1); the two guide grooves (23) on the heat sink (2) correspond to the positions of the two heat dissipation areas (22); and the guide grooves (23) match the cross-sectional shape of the cooling water pipe (3).

4. A Roots pump exhaust port cooling device according to claim 2 or 3, characterized in that: The fixing area (21) is evenly provided with at least two groups of bolt fixing holes (211) along the length direction to achieve multi-point fixing of the heat sink (2).

5. A Roots pump exhaust port cooling device according to claim 2 or 3, characterized in that: A temperature sensor (212) for real-time monitoring of the temperature of the heat sink (2) is installed on the fixing area (21).

6. A cooling device for the exhaust port of a Roots pump according to any one of claims 1 to 3, characterized in that: A water inlet joint (31) and a drain joint (32) are respectively arranged at both ends of the cooling water pipe (3), and the water inlet joint (31) and the drain joint (32) are connected to the same cooling liquid source to achieve the circulation of cooling water.

7. A cooling device for the exhaust port of a Roots pump according to any one of claims 1 to 3, characterized in that: The heat sink (2) is an aluminum plate, and the cooling water pipe (3) is a stainless steel pipe.

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