CN216554397U

CN216554397U - Anticorrosive screw vacuum pump

Info

Publication number: CN216554397U
Application number: CN202122996837.4U
Authority: CN
Inventors: 张学苏; 张文宇; 胡子东
Original assignee: Zhejiang Yida Vacuum Equipment Manufacturing Co ltd
Current assignee: Zhejiang Yida Vacuum Equipment Manufacturing Co ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-05-17
Anticipated expiration: 2031-11-27

Abstract

The utility model discloses an anti-corrosion screw vacuum pump which comprises a pump body, wherein a pump cavity is formed in the pump body, a screw with blades is arranged in the pump cavity, a motor for driving the screw to rotate is arranged outside the pump body, the anti-corrosion screw vacuum pump also comprises an anti-corrosion composite layer, and the anti-corrosion composite layer is formed on the outer sides of the screw and the blades.

Description

Anticorrosive screw vacuum pump

Technical Field

The utility model belongs to the technical field of vacuum pumps, and particularly relates to an anti-corrosion screw vacuum pump.

Background

The screw vacuum pump is an air extraction device which utilizes a screw with blades to rotate at a high speed in a pump shell to generate air suction and exhaust effects, is an updated product of an oil seal type vacuum pump, can extract gas occasions containing a large amount of water vapor and a small amount of dust and particulate matters, and is widely applied to the fields of enterprises such as domestic pharmacy, chemical industry, semiconductors and the like with higher requirements on vacuum cleaning.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a screw vacuum pump which is simple in structure and corrosion-resistant.

In order to realize the purpose, the utility model provides the following technical scheme: an anti-corrosion screw vacuum pump comprises a pump body, a pump cavity is formed in the pump body, a screw with blades is arranged in the pump cavity, a motor for driving the screw to rotate is arranged outside the pump body, and the anti-corrosion screw vacuum pump also comprises

And the anticorrosive composite layer is formed on the outer sides of the screw and the blades.

The utility model is further configured to: the anti-corrosion composite layer comprises

And the electroplating layer is formed outside the screw and the blade.

The utility model is further configured to: the anti-corrosion composite layer also comprises

The anticorrosive reinforcing layer is sprayed outside the electroplating layer.

The utility model is further configured to: comprises that

The screw is characterized in that the periphery of the blade of the screw is provided with a plurality of chip grooves extending along the blade.

The utility model is further configured to: the number of the chip grooves is 1-3, and the cross sections of the chip grooves are arc-shaped; and the anti-corrosion composite layer coats the chip groove.

The utility model is further configured to: also comprises

And the protective layer is arranged outside the anti-corrosion composite layer.

The utility model is further configured to: the electroplated layer is an aluminum-zinc plated layer, the anticorrosion reinforcing layer is a tungsten carbide spraying layer, and the protective layer is a wear-resistant ceramic coating.

The utility model is further configured to: and a wear-resistant composite layer is formed on the inner wall of the pump cavity.

The utility model is further configured to: the wear-resistant composite layer comprises a bearing layer and a corrosion-resistant paint layer from the outside to the side wall of the pump cavity.

The utility model is further configured to: the bearing layer is a TS wear-resistant coating, and the corrosion-resistant paint layer is a fluorocarbon finish paint layer.

Compared with the prior art, the utility model has the following advantages: the corrosion-resistant composite layer is formed outside the screw and the blades, so that the whole screw is prevented from contacting with external substances, and a good corrosion-resistant effect is achieved; the plurality of chip grooves extending along the blades are formed in the periphery of the blades of the screw, so that when particles enter the pump cavity, a part of the particles can be discharged along with the rotation of the blades and the chip grooves, and the abrasion of the pump cavity and the screw is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the screw according to the present invention;

FIG. 4 is a cross-sectional view taken at I in FIG. 3;

reference numbers in the drawings and corresponding part names: 1-pump body, 2-pump cavity, 3-screw, 4-electroplated layer, 5-anticorrosion reinforced layer, 6-protective layer, 7-chip groove, 8-bearing layer and 9-corrosion-resistant paint layer.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 4.

Example one

An anticorrosive screw vacuum pump comprises a pump body 1, wherein a pump cavity 32 is formed in the pump body 1, a screw with blades is arranged in the pump cavity 32, a motor for driving the screw to rotate is arranged outside the pump body 1, and the anticorrosive screw vacuum pump further comprises

The reinforcing ribs are integrally formed in the screw rod, the cross sections of the reinforcing ribs are in a regular hexagon shape, and the reinforcing ribs can improve the overall structural strength of the screw rod.

The corrosion-resistant composite layer is formed outside the screw and the blades, so that the screw is prevented from being contacted with external substances, and a good corrosion-resistant effect is achieved.

Example two

Further on the basis of the first embodiment: the anti-corrosion composite layer comprises

And the electroplated layer 4 is formed outside the screw rod and the blade.

The good corrosion prevention effect of the corrosion prevention composite layer can be ensured through the arrangement of the electroplated layer 4, so that the overall corrosion resistance of the screw is ensured.

EXAMPLE III

On the basis of the second embodiment: the anti-corrosion composite layer also comprises

And the anticorrosive reinforcing layer 5 is sprayed outside the electroplated layer 4.

The anti-corrosion effect of the anti-corrosion composite layer can be further ensured by arranging the anti-corrosion reinforcing layer 5, so that the overall anti-corrosion performance of the screw is greatly improved.

Example four

Further on the basis of the third embodiment: comprises that

And the chip grooves 7 are formed in the periphery of the blades of the screw, and the chip grooves 7 extending along the blades are formed in the periphery of the blades of the screw.

By arranging a plurality of chip grooves 7 extending along the blades on the periphery of the blades of the screw, when particles enter the pump cavity 32, a part of the particles can be discharged along with the rotation of the blades and the chip grooves 7, so that the abrasion of the pump cavity 32 and the screw is reduced.

EXAMPLE five

Further on the basis of example four: the number of the chip grooves 7 is 1-3, and the cross sections of the chip grooves 7 are arc-shaped; and the anti-corrosion composite layer is coated with a chip groove 7.

The number of the chip removal grooves 7 is 1-3, so that a good chip removal effect can be achieved, and the cross sections of the chip removal grooves 7 are arc-shaped, so that the volume of the chip removal grooves 7 can be ensured; the anti-corrosion composite layer coats the chip grooves 7, so that the chip grooves 7 of the screw can be prevented from being partially corroded.

EXAMPLE six

Further on the basis of example five: also comprises

And the protective layer 6 is arranged outside the anticorrosion composite layer.

The anti-corrosion composite layer can be protected by the protective layer 6, and even if the protective layer 6 is abraded, the anti-corrosion effect of the anti-corrosion composite layer can be ensured as long as the anti-corrosion composite layer is not damaged.

EXAMPLE seven

Further on the basis of example six: the electroplated layer 4 is an aluminum-zinc plated layer, the anticorrosion reinforcing layer 5 is a tungsten carbide spraying layer, and the protective layer 6 is a wear-resistant ceramic coating.

The aluminum-zinc plated layer can play a good anti-corrosion role, the tungsten carbide spraying layer can play a good wear-resistant and anti-corrosion role, and the wear-resistant ceramic coating can play a good wear-resistant role.

Example eight

Further on the basis of example seven: a wear-resistant composite layer is formed on the inner wall of the pump chamber 32.

The wear-resistant composite layer arranged on the inner wall of the pump cavity 32 can ensure good wear-resistant effect on the inner wall of the pump cavity 32.

Example nine

Further on the basis of example eight: the wear-resistant composite layer comprises a bearing layer 8 and a corrosion-resistant paint layer 9 from the outside to the side wall of the pump cavity 32.

Good corrosion-resistant effect can be ensured through the arrangement of the corrosion-resistant paint layer 9, and the arrangement of the bearing layer 8 can play a good bearing protection role in the corrosion-resistant paint layer 9.

Example ten

Further on the basis of example nine: the bearing layer 8 is a TS wear-resistant coating, and the corrosion-resistant paint layer 9 is a fluorocarbon finish paint layer.

The wear-resistant effect of the inner wall of the pump cavity 32 can be ensured through the TS wear-resistant coating; the fluorocarbon finish paint layer can play a good role in preventing corrosion of the pump cavity 32; and the fluorocarbon finish paint layer is arranged on the inner side of the TS wear-resistant coating, so that the corrosion-resistant effect of the fluorocarbon finish paint layer can be ensured even after the TS wear-resistant coating is worn. The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides an anticorrosive screw vacuum pump, includes the pump body (1), is formed with pump chamber (2) in the pump body (1), is provided with screw rod (3) of taking the paddle in pump chamber (2), and pump body (1) is provided with the rotatory motor of drive screw rod (3) outward, characterized by: also comprises

And the anticorrosive composite layer is formed on the outer sides of the screw (3) and the blades.

2. An anti-corrosion screw vacuum pump according to claim 1, characterized in that: the anti-corrosion composite layer comprises

And the electroplating layer (4) is formed outside the screw (3) and the blade.

3. An anti-corrosion screw vacuum pump according to claim 2, wherein: the anti-corrosion composite layer also comprises

And the anticorrosive reinforcing layer (5) is sprayed outside the electroplating layer.

4. An anti-corrosion screw vacuum pump according to claim 3, wherein: also comprises

The screw is characterized in that the chip grooves (7) are formed in the periphery of the blades of the screw (3), and the chip grooves (7) extend along the blades.

5. An anti-corrosion screw vacuum pump according to claim 4, wherein: the number of the chip grooves (7) is 1-3, and the cross sections of the chip grooves are arc-shaped; and the anticorrosive composite layer is coated with a chip groove (7).

6. An anti-corrosion screw vacuum pump according to claim 5, wherein: and a wear-resistant composite layer is formed on the inner wall of the pump cavity (2).

7. An anti-corrosion screw vacuum pump according to claim 6, wherein: the wear-resistant composite layer comprises a bearing layer (8) and a corrosion-resistant paint layer (9) from the outside to the side wall of the pump cavity.

8. An anti-corrosion screw vacuum pump according to claim 7, wherein: the bearing layer (8) is a TS wear-resistant coating, and the corrosion-resistant paint layer (9) is a fluorocarbon finish paint layer.