CN219101579U

CN219101579U - Roots pump

Info

Publication number: CN219101579U
Application number: CN202223547224.3U
Authority: CN
Inventors: 樊忠; 樊挺杰; 沈沛
Original assignee: Nantong Longying Vacuum Technology Co ltd
Current assignee: Nantong Longying Vacuum Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-30
Anticipated expiration: 2032-12-29

Abstract

The utility model belongs to the technical field of Roots pumps, and particularly relates to a Roots pump which comprises a pump body, wherein a first rotating shaft and a second rotating shaft are rotatably arranged in the pump body, one end of the first rotating shaft is connected with a motor, the other end of the first rotating shaft and the corresponding end of the second rotating shaft are connected with gears through expansion sleeves, and the two gears are meshed with each other; rotors are arranged on the first rotating shaft and the second rotating shaft which are positioned at the inner cavity; the pump body is also provided with a jacket type water cooling mechanism for cooling the gear. The fixed pivot of cover and gear rise through this application, solved the great problem of degree of difficulty such as processing assembly and maintenance, improved production efficiency and product quality greatly. The jacket type cooling is adopted, the problem of easy water leakage is solved, the cooling efficiency is improved, the material and the processing time are saved, the appearance is concise and attractive, and the operation and the maintenance are convenient.

Description

Roots pump

Technical Field

The utility model belongs to the technical field of Roots pumps, and particularly relates to a Roots pump.

Background

The Roots vacuum pump is a rotary positive-displacement vacuum pump, also called a mechanical booster pump, and is one of main air extraction devices for obtaining medium and high vacuum at present. The working principle is that two 8-shaped rotors are utilized to synchronously rotate in a pump shell, thereby completing air suction and air discharge, and the pump is widely applied to various industries.

The Roots vacuum pump in the prior art fixes gears through key pins and taper, the gap between rotors is difficult to adjust during assembly, the processing technology is complex, and the materials and the working hours are wasted. In the prior art, the Roots vacuum pump is used for cooling the gear, and the cooler is a welding piece, so that the phenomenon of water leakage is easy to occur, and the processing requirement is high.

Disclosure of Invention

In view of the above-mentioned shortcomings, it is an object of the present utility model to provide a Roots pump.

The utility model provides the following technical scheme:

a Roots pump comprises a pump body, wherein a first rotating shaft and a second rotating shaft are rotatably arranged in the pump body, one end of the first rotating shaft is connected with a motor, the other end of the first rotating shaft and the corresponding end of the second rotating shaft are connected with gears through expansion sleeves, and the two gears are meshed with each other; rotors are arranged on the first rotating shaft and the second rotating shaft which are positioned at the inner cavity;

the pump body is also provided with a jacket type water cooling mechanism for cooling the gear.

And two ends of the pump body are respectively connected with a first end block and a second end block, and an end cover is arranged on the second end block.

The jacket type water cooling mechanism comprises a jacket body connected with the end block I, and the jacket body is provided with a cooling cavity; the jacket body is provided with a jacket cover, and the jacket cover is provided with a water inlet and a water outlet which are communicated with the cooling cavity.

The rotor is equipped with the pivot hole in the middle, is located pivot hole both sides and is equipped with the through-hole, and the through-hole passes through logical groove intercommunication with the pivot hole.

The upper end and the lower end of the pump body are respectively provided with a first opening and a second opening which are communicated with the inner cavity; and a bypass exhaust port is further formed in one side of the pump body and is communicated with the second opening through a channel formed in the pump body.

The beneficial effects of the utility model are as follows: the fixed pivot of cover and gear rise through this application, solved the great problem of degree of difficulty such as processing assembly and maintenance, improved production efficiency and product quality greatly. The jacket type cooling is adopted, the problem of easy water leakage is solved, the cooling efficiency is improved, the material and the processing time are saved, the appearance is concise and attractive, and the operation and the maintenance are convenient.

Drawings

FIG. 1 is a schematic diagram of the structure of the present application;

FIG. 2 is a schematic view with the jacket cover removed;

FIG. 3 is a schematic diagram of a gear installation;

FIG. 4 is a schematic diagram of a connection between a motor and a shaft;

FIG. 5 is a schematic diagram of a rotor installation;

fig. 6 is a cross-sectional view of the pump body.

Marked in the figure as: pump body 101, opening one 102, bypass exhaust 103, end block one 104, end block two 105, end cap 106, opening two 107, channel 108, inner cavity 109, jacket body 201, jacket cover 202, water inlet 203, water outlet 204, cooling chamber 205, motor 301, shaft one 302, shaft two 303, expansion sleeve 304, gear 305, rotor 306, through hole 307, shaft hole 308, through slot 309.

Detailed Description

As shown in fig. 1-6, a Roots pump includes a pump body 101, and a cooling fin is disposed on the pump body 101, so as to facilitate air cooling and heat dissipation of the pump body 101. A plurality of lifting rings are also arranged on the pump body 101, so that the Roots pump can be moved conveniently.

Two ends of the pump body 101 are respectively connected with a first end block 104 and a second end block 105, and an end cover 106 is arranged on the second end block 105.

The upper and lower ends of the pump body 101 are respectively provided with a first opening 102 and a second opening 107 which are communicated with the inner cavity 109. A bypass exhaust port 103 is further provided on one side of the pump body 101, and the bypass exhaust port 103 communicates with the second opening 107 through a passage 108 provided in the pump body 101.

A first rotating shaft 302 and a second rotating shaft 303 are rotatably installed in the pump body 101, specifically, two ends of the first rotating shaft 302 and the second rotating shaft 303 are respectively connected with the pump body 101 through bearings, and two ends of the first rotating shaft 302 and the second rotating shaft 303 extend out of the pump body 101 and are respectively positioned in the first end block 104 and the second end block 105. One end of the first rotating shaft 302, which is positioned in the second end block 105, is connected with the motor 301 through a coupler.

The other end of the first rotating shaft 302 and the corresponding end of the second rotating shaft 303 are positioned in the first end block 104, the end parts of the first rotating shaft 302 and the second rotating shaft 303 positioned in the first end block 104 are connected with gears 305 through expansion sleeves 304, and the two gears 305 are meshed with each other. When the first rotating shaft 302 rotates, the second rotating shaft 303 can be driven to rotate together. A rotor 306 is mounted on both the first shaft 302 and the second shaft 303 at the cavity 109 by a keyed connection. The rotor 306 has an "8" shape.

The rotor 306 is centrally provided with a rotation shaft hole 308, through holes 307 are arranged on two sides of the rotation shaft hole 308, and the through holes 307 are communicated with the rotation shaft hole 308 through grooves 309. The effect of the rebalancing is achieved by opening the through hole 307.

The pump body 101 is also provided with a jacket type water cooling mechanism for cooling the gear 305. Specifically, the jacket type water cooling mechanism comprises a jacket body 201 connected with the end block I104 through a bolt, and the jacket body 201 is made of a heat conducting material. The jacket body 201 is provided with a cooling chamber 205. The jacket body 201 is provided with a jacket cover 202, and the jacket cover 202 is provided with a water inlet 203 and a water outlet 204 which are communicated with a cooling cavity 205. After the cooling water enters the cooling chamber 205, heat generated by the rotation of the pair of gears 305 within the end block one 104 may be carried away.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A roots pump, characterized in that: the device comprises a pump body (101), wherein a first rotating shaft (302) and a second rotating shaft (303) are rotatably arranged in the pump body (101), one end of the first rotating shaft (302) is connected with a motor (301), the other end of the first rotating shaft (302) and the corresponding end of the second rotating shaft (303) are connected with gears (305) through expansion sleeves (304), and the two gears (305) are meshed with each other; a rotor (306) is arranged on the first rotating shaft (302) and the second rotating shaft (303) which are positioned at the inner cavity (109);

the pump body (101) is also provided with a jacket type water cooling mechanism for cooling the gear (305).

2. The roots pump of claim 1, wherein: two ends of the pump body (101) are respectively connected with a first end block (104) and a second end block (105), and an end cover (106) is arranged on the second end block (105).

3. The roots pump of claim 2, wherein: the jacket type water cooling mechanism comprises a jacket body (201) connected with the end block I (104), and the jacket body (201) is provided with a cooling cavity (205); the jacket body (201) is provided with a jacket cover (202), and the jacket cover (202) is provided with a water inlet (203) and a water outlet (204) which are communicated with the cooling cavity (205).

4. The roots pump of claim 1, wherein: the rotor (306) is provided with a rotating shaft hole (308) in the middle, through holes (307) are formed in two sides of the rotating shaft hole (308), and the through holes (307) are communicated with the rotating shaft hole (308) through grooves (309).

5. The roots pump of claim 1, wherein: the upper end and the lower end of the pump body (101) are respectively provided with a first opening (102) and a second opening (107) which are communicated with the inner cavity (109); a bypass exhaust port (103) is further formed in one side of the pump body (101), and the bypass exhaust port (103) is communicated with the second opening (107) through a channel (108) formed in the pump body (101).