Corrosion-resistant vacuum pump rotor structure

Abstract

The utility model discloses a corrosion-resistant vacuum pump rotor structure, which comprises a rotor body, and is characterized in that an external attachment assembly is arranged outside the rotor body, the external attachment assembly comprises a protective sleeve sleeved outside the rotor body in a sliding manner, and the rotor body can be just positioned in an internal space of the protective sleeve. The outer portion of the protective sleeve is covered with a sealing cover, a plurality of bolts are slidably inserted into the sealing cover, the bolts are all in threaded connection with the interior of the protective sleeve, two sealing rings are arranged on the outer wall of one side of the protective sleeve, and grooves matched with the two sealing rings are formed in the outer side of the sealing cover. According to the utility model, the external attachment assembly is arranged, so that a layer of anti-corrosion structure is additionally arranged outside the rotor body, the overall anti-corrosion performance of the rotor body can be greatly improved, the external attachment assembly is convenient to replace, and the service life of the rotor body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a corrosion-resistant vacuum pump rotor structure. Background Art

[0002] With the development of society, vacuum technology is increasingly used in the fields of production and scientific research. The pressure requirements in these fields are getting higher and higher. A single type of vacuum pump cannot meet all working ranges. Different vacuum pumps are needed to form a vacuum pumping system. In the pumping process of the vacuum pump, the rotor plays a vital role. The rotor rotates inside the pump body to extract the gas.

[0003] After searching, the utility model with Chinese patent announcement number CN205714764U discloses a vacuum pump rotor, including a body, an axial hole is opened in the middle of the body, a plurality of vertical vane grooves are opened on the peripheral wall of the body, the vane grooves are evenly arranged around the center of the body, and the vane grooves are connected with the top and bottom surfaces of the body, and the body is provided with arc grooves with the same number as the vane grooves and connected with the top and bottom surfaces of the body.

[0004] Currently, when the vacuum pump is working, the extracted air enters from the first intake pipe. However, since the air also contains water vapor and even polluting gases such as sulfur dioxide, and the rotor will be in contact with these substances for a long time, its corrosion resistance is particularly important. Utility Model Content

[0005] The utility model aims to provide a corrosion-resistant vacuum pump rotor structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant vacuum pump rotor structure, including a rotor body, characterized in that: an external component is installed on the outside of the rotor body, and the external component includes a protective sleeve slidably mounted on the outside of the rotor body, and the rotor body can be just in the internal space of the protective sleeve, and the outside of the protective sleeve is covered with a closing cover, and a plurality of bolts are slidably inserted inside the closing cover, and the plurality of bolts are all threadedly connected in the protective sleeve.

[0007] Adding a layer of anti-corrosion structure to the outside of the rotor body can greatly increase the overall anti-corrosion performance of the rotor body, and the external components are easy to replace, which is beneficial to increasing the service life of the rotor body. The protective sleeve is installed on the outside of the rotor body, and then the closing cover is covered on the opening of the protective sleeve, and the holes of the two are made to correspond one to one. Finally, the closing cover and the protective sleeve are connected with bolts to form a protective layer on the outside of the rotor body, which effectively prevents external factors from affecting the rotor body. The protective sleeve and the closing cover are movably installed on the outside of the rotor body, which can ensure that they can be directly replaced when damaged, without replacing the rotor body.

[0008] As a further preferred embodiment of the technical solution, two sealing rings are arranged on the outer wall of one side of the protective sleeve, and grooves adapted to the two sealing rings are arranged on the outer side of the closing cover.

[0009] As a further preferred embodiment of the present technical solution, the protective sleeve and the closing cover include a base layer and an anti-corrosion layer, and the anti-corrosion layer is arranged on the outside.

[0010] As a further preferred embodiment of the present technical solution, the base layer is entirely made of stainless steel material.

[0011] As a further preferred embodiment of the present technical solution, the anti-corrosion layer is entirely composed of a ceramic coating.

[0012] As a further preferred embodiment of the present technical solution, a plurality of countersunk holes are formed on an outer wall of one side of the closing cover, and a plurality of bolts can respectively enter the plurality of countersunk holes.

[0013] The utility model provides a corrosion-resistant vacuum pump rotor structure, which has the following beneficial effects:

[0014] The utility model provides an external component so that an anti-corrosion structure is added to the outside of the rotor body, which can greatly increase the overall anti-corrosion performance of the rotor body. The external component is easy to replace, which is beneficial to increasing the service life of the rotor body. The protective sleeve is arranged on the outside of the rotor body, and then the closing cover is covered on the opening of the protective sleeve, and the holes of the two are made to correspond one to one. Finally, the closing cover and the protective sleeve are connected by bolts, so that a protective layer can be formed on the outside of the rotor body, which effectively prevents external factors from affecting the rotor body. The protective sleeve and the closing cover are movably installed on the outside of the rotor body, which can ensure that they can be directly replaced when damaged, without replacing the rotor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall first-view structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0017] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0019] In the figure: 1. rotor body; 2. sealing ring; 3. external components; 301. protective sleeve; 302. closing cover; 303. bolts; 304. base layer; 305. anti-corrosion layer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 and Figure 4 As shown, in this embodiment, a corrosion-resistant vacuum pump rotor structure includes a rotor body 1, characterized in that: an external component 3 is installed on the outside of the rotor body 1, and the external component 3 includes a protective sleeve 301 slidably sleeved on the outside of the rotor body 1, and the rotor body 1 can be just in the internal space of the protective sleeve 301, and the outside of the protective sleeve 301 is covered with a closing cover 302, and a plurality of bolts 303 are slidably inserted inside the closing cover 302, and the plurality of bolts 303 are all threadedly connected in the protective sleeve 301.

[0022] The protective sleeve 301 is sleeved on the outside of the rotor body 1, and then the closing cover 302 is covered on the opening of the protective sleeve 301, and the holes of the two are made to correspond one to one. Finally, the closing cover 302 and the protective sleeve 301 are connected by bolts 303, so that a protective layer can be formed on the outside of the rotor body 1, which effectively prevents external factors from affecting the rotor body 1. The protective sleeve 301 and the closing cover 302 are movably installed on the outside of the rotor body 1, which can ensure that they can be directly replaced when damaged without replacing the rotor body.

[0023] like Figure 1 and Figure 3 As shown, two sealing rings 2 are arranged on the outer wall of one side of the protective sleeve 301 , and grooves adapted to the two sealing rings 2 are arranged on the outer side of the closing cover 302 .

[0024] Since a sealing ring 2 is disposed outside the protective sleeve 301 , when the closing cover 302 and the protective sleeve 301 are overlapped together, the sealing ring 2 can ensure the airtightness between the two.

[0025] like Figure 4As shown, the protective sleeve 301 and the closing cover 302 include a base layer 304 and an anti-corrosion layer 305, and the anti-corrosion layer 305 is arranged on the outside.

[0026] The base layer 304 is made entirely of stainless steel, which ensures its overall strength while also having excellent corrosion resistance.

[0027] The anti-corrosion layer 305 is composed of a ceramic coating. The hardness of the ceramic coating is usually 6-9H, which is harder than ordinary coatings. It not only has the characteristics of high hardness, but also has good wear resistance and strong anti-corrosion ability. It can effectively resist the erosion of moisture, acidic and alkaline substances.

[0028] like Figure 1 and Figure 2 As shown, a plurality of countersunk holes are provided on the outer wall of one side of the closing cover 302, and a plurality of bolts 303 can respectively enter the plurality of countersunk holes, which can prevent the bolts 303 from extending out of the closing cover 303 to form a bulge, thereby affecting the normal use of the rotor.

[0029] The utility model provides a corrosion-resistant vacuum pump rotor structure, and the specific working principle is as follows:

[0030] Before installing the device, the protective sleeve 301 is sleeved on the outside of the rotor body 1, and then the closing cover 302 is covered on the opening of the protective sleeve 301, and the holes of the two are made to correspond one to one. Finally, the closing cover 302 and the protective sleeve 301 are connected by bolts 303, so that a protective layer can be formed on the outside of the rotor body 1, which effectively prevents external factors from affecting the rotor body 1. The protective sleeve 301 and the closing cover 302 are movably installed on the outside of the rotor body 1, which can ensure that they can be directly replaced when damaged without replacing the rotor body 1. Since a sealing ring 2 is arranged on the outside of the protective sleeve 301, when the closing cover 302 and the protective sleeve 301 overlap, the sealing ring 2 can ensure the airtightness between the two.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant vacuum pump rotor structure, comprising a rotor body (1), characterized in that: An external component (3) is installed on the outside of the rotor body (1), and the external component (3) includes a protective sleeve (301) slidably mounted on the outside of the rotor body (1). The rotor body (1) can be located exactly in the internal space of the protective sleeve (301). The outside of the protective sleeve (301) is covered with a closing cover (302), and a plurality of bolts (303) are slidably inserted into the inside of the closing cover (302), and the plurality of bolts (303) are all threadedly connected in the protective sleeve (301).

2. A corrosion-resistant vacuum pump rotor structure according to claim 1, characterized in that: Two sealing rings (2) are arranged on the outer wall of one side of the protective sleeve (301), and grooves adapted to the two sealing rings (2) are arranged on the outer side of the closing cover (302).

3. The corrosion-resistant vacuum pump rotor structure according to claim 1, characterized in that: The protective sleeve (301) and the closing cover (302) include a base layer (304) and an anti-corrosion layer (305), and the anti-corrosion layer (305) is arranged on the outside.

4. A corrosion-resistant vacuum pump rotor structure according to claim 3, characterized in that: The base layer (304) is entirely made of stainless steel.

5. The corrosion-resistant vacuum pump rotor structure according to claim 3, characterized in that: The anti-corrosion layer (305) is entirely composed of a ceramic coating.

6. The corrosion-resistant vacuum pump rotor structure according to claim 1, characterized in that: A plurality of countersunk holes are formed on an outer wall of one side of the closing cover (302), and a plurality of bolts (303) can respectively enter the plurality of countersunk holes.

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