A pump body structure of a roots vacuum pump

Abstract

The utility model discloses a pump body structure of roots vacuum pump, including pump body shell, set up in the top of pump body shell and can with the flange interface subassembly of external pipeline interface bolt fixed, the flange interface subassembly includes the interface end fixed in the top of pump body shell, the annular outer groove of setting in the top of interface end, installs fluorine rubber seal ring in annular outer groove inside, the flange interface subassembly still includes the lateral cover of fixed in the top of interface end outer edge, through the design of flange interface subassembly, can with external pipeline interface and carry out the connection, the annular outer groove and fluorine rubber seal ring can carry out the sealing of both's connection, and the lateral cover is covered in both connection place's outside, and utilizes rubber inner pad to carry out the sealing shielding of joint, on one hand, multiple sealed protection guarantees the sealing between flange interface subassembly and external pipeline interface, on the other hand, rubber inner pad can also buffer the vibration of vacuum pump work time generation, further guarantee the sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of Roots vacuum pump technology, specifically relating to a pump body structure of a Roots vacuum pump. Background Technology

[0002] A Roots vacuum pump is a rotary variable displacement vacuum pump, its core consisting of a pair of counter-rotating synchronous rotors, a pump body, end caps, and other structures. It achieves gas intake, delivery, and discharge through the meshing rotation of the rotors, creating a volume change. It requires a backing pump to achieve the desired vacuum effect. Roots vacuum pumps are characterized by their compact structure, high pumping speed, and stable operation. Their oil-free lubrication design avoids contamination, making them suitable for various industries such as chemical, pharmaceutical, electronics, and food processing. They are widely used in vacuum drying, distillation, and coating applications. Their key advantage lies in their stable performance over a wide pressure range, making them an essential piece of equipment for achieving a vacuum environment in industrial production.

[0003] Before use, a Roots vacuum pump needs to be connected to an external pipeline. Currently, the connection between the vacuum pump and the pipeline is generally through a flange interface, and a sealing ring is installed on the flange interface, which is also a common sealing method. However, the sealing effect of this single sealing structure is generally not good, and the vacuum pump inevitably vibrates during use. Over time, there is a risk of loosening at the connection, which can lead to leakage and is not conducive to the normal use of the Roots vacuum pump. Therefore, a new pump body needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a pump body structure for a Roots vacuum pump, so as to solve the problem mentioned in the background art that the connection between the flange interface and the external pipeline in the existing Roots vacuum pump has poor sealing performance and there is a risk of leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pump body structure for a Roots vacuum pump, comprising a pump body shell and a flange interface assembly disposed on the top of the pump body shell and bolted to an external pipeline interface.

[0006] The flange interface assembly includes an interface end fixed to the top surface of the pump body shell, an annular outer groove formed at the top of the interface end, and a fluororubber sealing ring installed inside the annular outer groove.

[0007] The flange interface assembly also includes a side sleeve fixed to the outer edge of the top end of the interface, a side groove opened inside the side sleeve, and a rubber gasket surrounding and fixed inside the side groove.

[0008] The side sleeve can cover the outside of the bottom end of the external pipe interface, and the rubber inner pad can be tightly attached to the outer edge of the bottom end of the external pipe interface.

[0009] Preferably, the rubber inner pad is glued and fixed inside the side groove, and the cross-section of the top of the rubber inner pad is an arc surface.

[0010] Preferably, the flange interface assembly further includes an annular inner groove formed at the top of the interface end and located inside the annular outer groove, and a PTFE sealing ring installed inside the annular inner groove.

[0011] Preferably, the flange interface assembly further includes a dustproof bag, which is fixedly connected to the top of the side sleeve.

[0012] Preferably, heat dissipation components are symmetrically arranged on both sides of the pump body shell. The heat dissipation components include heat dissipation side grooves symmetrically opened on both sides of the pump body shell, and the heat dissipation side grooves are not connected to the interior of the pump body shell. Heat dissipation fins are evenly distributed inside the heat dissipation side grooves. Baffles are fixed on both sides of the pump body shell above the heat dissipation side grooves, and a mesh cover is provided in the middle of the baffle.

[0013] Preferably, one end of the pump housing is connected to a drive assembly, which includes a motor and a reducer.

[0014] Preferably, the bottom surface of the pump body shell is symmetrically provided with a base frame, and the base frame has mounting holes at the front and rear ends.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The designed flange interface assembly can be connected to the external pipe interface. The annular outer groove and fluororubber sealing ring can seal the connection between the two. At the same time, the side sleeve is placed on the outside of the connection between the two, and the rubber gasket is used to seal and cover the connection seam. On the one hand, the multiple sealing protections ensure the sealing performance between the flange interface assembly and the external pipe interface. On the other hand, the rubber gasket can also buffer the vibration generated by the vacuum pump during operation, further ensuring the sealing effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a partial sectional view of the flange interface assembly and the external pipe interface of this utility model when connected;

[0019] Figure 3 This utility model Figure 1 Enlarged view of area A in the middle;

[0020] In the diagram: 100, Pump body shell; 200, Flange interface assembly; 201, Interface end; 202, Side sleeve; 203, Side groove; 204, Rubber inner gasket; 205, Annular outer groove; 206, Fluororubber sealing ring; 207, Annular inner groove; 208, PTFE sealing ring; 209, Dustproof bag; 300, Heat dissipation assembly; 301, Heat dissipation side groove; 302, Heat dissipation fins; 303, Baffle; 304, Mesh cover; 400, Drive assembly; 500, Base frame; 600, External pipe interface. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figures 1 to 3 This embodiment provides a technical solution: a pump body structure for a Roots vacuum pump, including a pump body shell 100 and a flange interface assembly 200 disposed on the top of the pump body shell 100 and bolted to an external pipe interface 600.

[0024] The flange interface assembly 200 includes an interface end 201 fixed to the top surface of the pump body shell 100, an annular outer groove 205 formed at the top of the interface end 201, and a fluororubber sealing ring 206 installed inside the annular outer groove 205. After the flange interface assembly 200 and the external pipe interface 600 are fixedly connected, the fluororubber sealing ring 206 can play a sealing role. The fluororubber material has good high temperature and low temperature resistance, ensuring good sealing stability.

[0025] The flange interface assembly 200 also includes a side sleeve 202 fixed to the outer edge of the top end of the interface end 201, a side groove 203 opened inside the side sleeve 202, and a rubber inner gasket 204 fixed inside the side groove 203. The side sleeve 202 can cover the outer side of the bottom end of the external pipe interface 600, and the rubber inner gasket 204 can be tightly attached to the outer edge of the bottom end of the external pipe interface 600. Through the side sleeve 202 and the rubber inner gasket 204, the connection between the flange interface assembly 200 and the external pipe interface 600 is sealed and reinforced on the one hand, and the vibration of the Roots vacuum pump is buffered and weakened on the other hand.

[0026] In this embodiment, preferably, the rubber inner gasket 204 is glued and fixed inside the side groove 203, and the top of the rubber inner gasket 204 has an arc surface, which facilitates the insertion of the external pipe interface 600 into the flange interface assembly 200.

[0027] In this embodiment, preferably, the flange interface assembly 200 further includes an annular inner groove 207 formed at the top of the interface end 201 and located inside the annular outer groove 205, and a PTFE sealing ring 208 installed inside the annular inner groove 207. The PTFE sealing ring 208 provides a second sealing reinforcement. The PTFE material has low gas leakage characteristics, which reduces interference with the vacuum system.

[0028] In this embodiment, preferably, the flange interface assembly 200 further includes a dustproof bag 209. The dustproof bag 209 is fixedly connected to the top of the side sleeve 202. Before connecting to the external pipe interface 600, the dustproof bag 209 can be flipped down to facilitate docking and fixing. After fixing, the dustproof bag 209 can be flipped up and tied to the outer surface of the external pipe interface 600 with a rope. At this time, the dustproof bag 209 can completely wrap the connection between the flange interface assembly 200 and the external pipe interface 600, playing a role in dust protection.

[0029] In this embodiment, preferably, heat dissipation assemblies 300 are symmetrically arranged on both sides of the pump housing 100. The heat dissipation assemblies 300 include heat dissipation side grooves 301 symmetrically opened on both sides of the pump housing 100, and the heat dissipation side grooves 301 are not connected to the interior of the pump housing 100. Heat dissipation fins 302 are evenly distributed inside the heat dissipation side grooves 301. Baffles 303 are fixed on both sides of the pump housing 100 above the heat dissipation side grooves 301. A mesh cover 304 is provided in the middle of the baffles 303. Through the heat dissipation side grooves 301 and heat dissipation fins 302, the heat dissipation capacity of the Roots vacuum pump can be improved. The baffles 303 can play a certain role in blocking dust from the heat dissipation side grooves 301 and heat dissipation fins 302, so as to prevent the surface of the heat dissipation side grooves 301 and heat dissipation fins 302 from being covered with thick dust, which would affect heat dissipation. The mesh cover 304 can block dust without affecting the heat dissipation capacity of the heat dissipation assembly 300.

[0030] In this embodiment, preferably, a drive assembly 400 is connected to one end of the pump housing 100. The drive assembly 400 includes a motor and a reducer to provide driving force for the Roots vacuum pump.

[0031] In this embodiment, preferably, a base frame 500 is symmetrically provided on the bottom surface of the pump housing 100 to support the Roots vacuum pump, and mounting holes are provided at the front and rear ends of the base frame 500.

[0032] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 pump body structure for a Roots vacuum pump, comprising a pump body housing (100) and a flange interface assembly (200) disposed on the top of the pump body housing (100) and bolted to an external pipe interface (600), characterized in that: The flange interface assembly (200) includes an interface end (201) fixed to the top surface of the pump body housing (100), an annular outer groove (205) opened at the top of the interface end (201), and a fluororubber sealing ring (206) installed inside the annular outer groove (205). The flange interface assembly (200) also includes a side sleeve (202) fixed to the outer edge of the top end of the interface end (201), a side groove (203) opened inside the side sleeve (202), and a rubber inner gasket (204) surrounding and fixed inside the side groove (203); The side sleeve (202) can cover the outside of the bottom end of the external pipe interface (600), and the rubber inner pad (204) can be tightly attached to the outer edge of the bottom end of the external pipe interface (600).

2. The pump body structure of a Roots vacuum pump according to claim 1, characterized in that: The rubber inner pad (204) is glued and fixed inside the side groove (203), and the cross-section of the top of the rubber inner pad (204) is an arc surface.

3. The pump body structure of a Roots vacuum pump according to claim 2, characterized in that: The flange interface assembly (200) also includes an annular inner groove (207) formed at the top of the interface end (201) and located inside the annular outer groove (205), and a PTFE sealing ring (208) installed inside the annular inner groove (207).

4. The pump body structure of a Roots vacuum pump according to claim 3, characterized in that: The flange interface assembly (200) also includes a dustproof bag (209), which is fixedly connected to the top of the side sleeve (202).

5. The pump body structure of a Roots vacuum pump according to claim 4, characterized in that: The pump housing (100) is symmetrically provided with heat dissipation components (300) on both sides. The heat dissipation components (300) include heat dissipation side grooves (301) symmetrically opened on both sides of the pump housing (100) and the heat dissipation side grooves (301) are not connected to the interior of the pump housing (100). Heat dissipation fins (302) are evenly distributed inside the heat dissipation side grooves (301). Baffles (303) are fixed on both sides of the pump housing (100) above the heat dissipation side grooves (301). A mesh cover (304) is provided in the middle of the baffles (303).

6. The pump body structure of a Roots vacuum pump according to claim 5, characterized in that: One end of the pump housing (100) is connected to a drive assembly (400), which includes a motor and a reducer.

7. The pump body structure of a Roots vacuum pump according to claim 6, characterized in that: The bottom surface of the pump body housing (100) is symmetrically provided with a base frame (500), and the base frame (500) has mounting holes at the front and rear ends.

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