CN219622877U

CN219622877U - Roots vacuum pump unit

Info

Publication number: CN219622877U
Application number: CN202321278647.1U
Authority: CN
Inventors: 马基刚; 马文慧
Original assignee: Shandong Zeyi Vacuum Equipment Co ltd
Current assignee: Shandong Zeyi Vacuum Equipment Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-01
Anticipated expiration: 2033-05-23

Abstract

The utility model relates to the technical field of vacuum pumps, and particularly discloses a Roots vacuum pump unit, which comprises a shell, wherein an upper end cover is arranged at the upper part of the shell, a lower end cover is arranged at the lower part of the shell, an air hole is formed in the shell, an L-shaped sealing ring is arranged at the upper port of the air hole, and guard plates are respectively extended at the openings of the upper end cover and the lower end cover. Through the design, be provided with the material absorption jar in one side that the lower extreme cover is close to the inlet tube, and the setting of material absorption jar can prevent that the material from getting into inside the vacuum pump, and install L shape sealing washer in gas pocket port department inner wall, and L line sealing washer's locality is good, and with the work piece interference extrusion contact of gas pocket top, therefore sealed effectual, also, install two rectangle sealing strips on the interference part inner wall of upper end cover and lower extreme cover, after cup jointing with the casing, rectangle sealing strip and shells inner wall interference extrusion contact, form good seal structure, consequently be difficult to appear phenomenon such as sealed inefficacy, life has been prolonged.

Description

Roots vacuum pump unit

Technical Field

The utility model relates to the technical field of vacuum pumps, in particular to a Roots vacuum pump unit.

Background

The Roots vacuum pump is widely applied to industries such as smelting and degassing, rolling, chemical industry, food, medicine and the like in vacuum metallurgy.

The problems of leakage and the like can occur in the working process of the traditional Roots vacuum pump, and the phenomena of sealing failure and the like easily occur after the Roots vacuum pump works for a period of time, so that the service life of the Roots vacuum pump is greatly shortened, and the normal operation of the Roots vacuum pump is seriously influenced. Accordingly, the present utility model provides a Roots vacuum pump unit to solve the above-mentioned problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the Roots vacuum pump unit, which can form a good sealing structure, is not easy to cause sealing failure and the like, and prolongs the service life.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a roots vacuum pump unit, includes the casing, and casing upper portion is provided with the upper end cover, and the casing lower part is provided with the lower extreme cover, has seted up the gas pocket on the casing, and L shape sealing washer is installed to the upper portion port department of gas pocket, and upper end cover and lower extreme cover opening part all extend there is the backplate, installs the rectangle sealing strip on the backplate inner wall, and the material absorption jar is installed to lower extreme cover one side, and the setting of material absorption jar can prevent that the material from getting into inside the vacuum pump.

Preferably, a driving unit is installed on the upper end cover, a rotor is arranged in the shell, and the driving unit is in driving connection with the rotor.

Preferably, the air hole is fixedly connected with a part with a flange above, the L-shaped sealing ring is in interference extrusion with the flange, the positioning property of the L-shaped sealing ring is good, and the L-shaped sealing ring is in interference extrusion contact with a workpiece above the air hole, so that the sealing effect is good.

Preferably, the rectangular sealing strip is in embedded joint with the inner wall of the upper end cover, the rectangular sealing strip is extruded with the outer wall of the shell in an interference mode, and after the rectangular sealing strip is sleeved with the shell, a good sealing structure can be formed.

Preferably, the ammonia gas interface is installed on the lower end cover, the manometer is installed on one side of the lower end cover, the manometer is communicated with the ammonia gas interface, the water inlet pipe is arranged on one side of the material absorbing tank, and the water inlet pipe is communicated with the lower end cover.

(III) beneficial effects

Compared with the prior art, the utility model provides a Roots vacuum pump unit, which has the following beneficial effects:

through the design, be provided with the material absorption jar in one side that the lower extreme cover is close to the inlet tube, and the setting of material absorption jar can prevent that the material from getting into inside the vacuum pump, and install L shape sealing washer in gas pocket port department inner wall, and L line sealing washer's locality is good, and with the work piece interference extrusion contact of gas pocket top, therefore sealed effectual, also, install two rectangle sealing strips on the interference part inner wall of upper end cover and lower extreme cover, after cup jointing with the casing, rectangle sealing strip and shells inner wall interference extrusion contact, form good seal structure, consequently be difficult to appear phenomenon such as sealed inefficacy, life has been prolonged.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of the structure of fig. 1 rotated horizontally to one side of the water intake pipe.

Fig. 3 is a schematic top view of the utility model.

Fig. 4 is a schematic view of the structure of the upper end cap portion of the present utility model.

In the figure: 1. a housing; 2. an upper end cap; 3. a lower end cap; 4. air holes; 401. an L-shaped sealing ring; 5. a driving unit; 6. a material absorbing tank; 7. a pressure gauge; 8. an ammonia interface; 9. a water inlet pipe; 10. a rotor; 11. rectangular sealing strips.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

The utility model provides a technical scheme, refer to fig. 1, 3, 4, a Roots vacuum pump unit, including the body 1, the upper portion of body 1 has upper end cap 2, the inferior part of body 1 has lower end cap 3, offer the air vent 4 on the body 1, the upper port department of the air vent 4 installs L-shaped seal ring 401, upper end cap 2 and opening department of lower end cap 3 extend guard plate, install rectangular seal strip 11 on the guard plate inner wall, refer to fig. 2, 3, 4, one side of lower end cap 3 installs the material absorbing tank 6, the setting of the material absorbing tank 6 can prevent the material from entering the vacuum pump, the air vent 4 is fixedly connected with part with flange above, L-shaped seal ring 401 is squeezed with flange interference, and the localization of L-shaped seal ring 401 is good, then with work piece above the air vent 4 interference extrusion contact, therefore the seal effect is good, the embedded joint of rectangular seal strip 11 and inner wall of upper end cap 2, rectangular seal strip 11 and outer wall of body 1 interference extrusion, after cup joint with body 1, can form the good seal structure;

referring to fig. 2, 3 and 4, a driving unit 5 is installed on an upper end cover 2, a rotor 10 is arranged in a shell 1, the driving unit 5 is in driving connection with the rotor 10, an ammonia gas interface 8 is installed on a lower end cover 3, a pressure gauge 7 is installed on one side of the lower end cover 3, the pressure gauge 7 is communicated with the ammonia gas interface 8, a water inlet pipe 9 is arranged on one side of a material absorbing tank 6, and the water inlet pipe 9 is communicated with the lower end cover 3.

The working principle of the device is as follows: the vacuum pump unit consists of a shell 1, an upper end cover 2 and a lower end cover 3, a rotor 10 connected with a driving unit 5 is arranged in an inner cavity, an L-shaped sealing ring 401 is arranged on the inner wall of a port of an air hole 4 formed in the shell 1, and the L-shaped sealing ring 401 has good positioning property and is in interference extrusion contact with a workpiece above the air hole 4, so that the sealing effect is good;

an ammonia gas port 8 is arranged at the lower end cover 3, a pressure gauge 7 is connected at the ammonia gas port 8 in a switching way, so that the amount of the ammonia gas entering can be measured, a material absorbing tank 6 is arranged at one side of the lower end cover, which is close to a water inlet pipe 9, and the material absorbing tank 6 is set so as to prevent the materials from entering the vacuum pump;

further, the upper end cover 2, the lower end cover 3 are sleeved with the shell 1 by adopting interference parts, and two rectangular sealing strips 11 are arranged on the inner wall of the interference part of the upper end cover 2 and the lower end cover 3, and after being sleeved with the shell 1, the rectangular sealing strips 11 are in interference extrusion contact with the inner wall of the shell 1 to form a good sealing structure.

Claims

1. Roots vacuum pump unit, including casing (1), its characterized in that: an upper end cover (2) is arranged at the upper part of the shell (1), a lower end cover (3) is arranged at the lower part of the shell (1), an air hole (4) is arranged on the shell (1), an L-shaped sealing ring (401) is arranged at the upper port of the air hole (4), the openings of the upper end cover (2) and the lower end cover (3) are respectively provided with a guard board, rectangular sealing strips (11) are arranged on the inner walls of the guard boards, and a material absorbing tank (6) is arranged on one side of the lower end cover (3).

2. A roots vacuum pump unit according to claim 1, wherein: the upper end cover (2) is provided with a driving unit (5), a rotor (10) is arranged in the shell (1), and the driving unit (5) is in driving connection with the rotor (10).

3. A roots vacuum pump unit according to claim 1, wherein: the air hole (4) is fixedly connected with a part with a flange above, and the L-shaped sealing ring (401) is extruded with the flange in an interference mode.

4. A roots vacuum pump unit according to claim 1, wherein: the rectangular sealing strip (11) is connected with the inner wall of the upper end cover (2) in an embedded clamping mode, and the rectangular sealing strip (11) is extruded with the outer wall of the shell (1) in an interference mode.

5. A roots vacuum pump unit according to claim 1, wherein: an ammonia gas interface (8) is arranged on the lower end cover (3), a pressure gauge (7) is arranged on one side of the lower end cover (3), and the pressure gauge (7) is communicated with the ammonia gas interface (8).

6. A roots vacuum pump unit according to claim 1, wherein: one side of the material absorbing tank (6) is provided with a water inlet pipe (9), and the water inlet pipe (9) is communicated with the lower end cover (3).