CN216554398U - Roots pump sealing device - Google Patents
Roots pump sealing device Download PDFInfo
- Publication number
- CN216554398U CN216554398U CN202122987470.XU CN202122987470U CN216554398U CN 216554398 U CN216554398 U CN 216554398U CN 202122987470 U CN202122987470 U CN 202122987470U CN 216554398 U CN216554398 U CN 216554398U
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- shaft
- hole
- axle
- piston ring
- sealed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
Lobe pump sealing device relates to lobe pump sealing technical field, and the bilobed drum axle outside is equipped with the slot, and O type sealing washer is installed to the ditch inslot, and the axle outside cover has the axle sleeve, and the axle that has assembled passes bearing chamber and rotor case, is equipped with hole I in the bearing chamber, and the general stopper of installation is sealed in the hole I, hole I's size and general stopper seal external diameter size cooperation, and the rotor case is equipped with drilling II in the position corresponding with the bearing chamber. The piston ring groove of the original shaft is sealed by adding an O-shaped ring, the shaft at the position of the piston ring is loosely matched with a shaft sleeve with the thickness of 3mm to prevent the shaft from being worn, the further processing is convenient, the sealing effect of the device is good, and the service life is long.
Description
Technical Field
The utility model relates to the technical field of Roots pump sealing, in particular to a Roots pump sealing device for methacrylate products.
Background
The rectification in the production of the methacrylate generally requires higher vacuum, which can be realized by adopting a Roots unit. However, the roots vacuum pump often has the following problems caused by piston ring sealing during use and maintenance:
1. the piston ring mainly seals between bearing box and rotor box, does not let lubricating oil enter into the rotor box and the rotor box in the material gets into the bearing box through using the piston ring, nevertheless uses the back in practical application for a long time, and the piston ring can break off, wearing and tearing scheduling problem owing to unable in time discovery, can cause lubricating oil to enter into the rotor chamber and the rotor box in the material gets into the bearing box, bearing and gear can be owing to lack of oil damage. And the oil entering the rotor cavity can enter the next-stage liquid ring pump to be mixed with circulating liquid, so that pollution is caused.
2. In the maintenance and installation of the roots pump, the piston ring is arranged on the shaft in a close fit manner in the disassembly process, the shaft is provided with a groove for installation and processing, but the piston ring is light and thin, so that the piston ring is easy to break in installation and needs to be continuously disassembled and assembled again, and the labor intensity of maintenance personnel is increased.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: to the above problem that meets to the lobe pump in this enterprise's production, provide a easy maintenance, sealed effectual, long service life's sealing device.
In order to realize the purpose of the utility model, the following technical scheme is adopted for realizing the purpose:
the roots pump sealing device is characterized in that grooves are formed in the outer sides of the two-blade drum shafts, O-shaped sealing rings are installed in the grooves, shaft sleeves are sleeved on the outer sides of the grooves of the two-blade drum shafts, the assembled two-blade drum shafts penetrate through a bearing cavity and a rotor box, a drilling hole I is formed in the bearing cavity, a universal plug seal and the shaft sleeves are installed in the drilling hole I, and the size of the drilling hole I is matched with the outer diameter of the universal plug seal. The rotor box is provided with a drill hole II at the position corresponding to the bearing cavity, the diameter of the drill hole II is larger than the diameter of the shaft sleeve by 4mm,
the shaft sleeve is matched with the double-blade drum shaft 1. The thickness of the shaft sleeve is 3 mm. The length of the shaft sleeve is based on the distance between the bearing cavity and the rotor box.
The universal plug seal is installed at the universal plug seal drilling hole and is sealed, the material is a modified polytetrafluoroethylene material, the strength of the material is moderate, the installation is easy, the material is wear-resistant, the material does not react with the material, and the production requirement is met.
The utility model has the beneficial technical effects that: the piston ring groove of the original shaft is sealed by adding an O-shaped ring, the shaft at the position of the piston ring is loosely matched with a shaft sleeve with the thickness of 3mm to prevent the shaft from being worn, the further processing is convenient, the sealing effect of the device is good, and the service life is long.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of a prior art sealing structure.
Fig. 3 is a schematic view of the structure of the bearing housing of the present invention.
Fig. 4 is a schematic view of the structure of the rotor casing in the present invention.
Detailed Description
The utility model is further explained by combining the attached drawings of the specification.
Examples
Roots pump sealing device, 1 outside of bilobed drum axle is equipped with slot 2, installation O type sealing washer 3 in the slot 2, and the cover has axle sleeve 4 in the 1 slot outside cover of bilobed drum axle, and well assembled bilobed drum axle 1 passes bearing chamber 5 and rotor case 6, is equipped with drilling I7 in the bearing chamber 5, and the sealed and axle sleeve of stopper is filled up to the installation in drilling I7, and the size of drilling I7 is sealed external diameter size with filling up to fill up mutually and is mutually supported. The rotor box 6 is provided with a drill hole II8 at the position corresponding to the bearing cavity 5, the diameter of the drill hole II8 is 4mm larger than that of the shaft sleeve 4,
the shaft sleeve 4 is matched with the double-blade drum shaft 1. The thickness of the shaft sleeve is 3 mm. The length of the sleeve is based on the distance between the bearing chamber 5 and the rotor housing 6.
The piston ring groove of former axle adds O type circle and seals, and loose cooperation adds the axle sleeve that 3mm is thick at the epaxial of piston ring position department and prevents the axle wearing and tearing, also is convenient for further processing, and axle sleeve length uses between rotor to the bearing as the standard, at bearing box baffle seal chamber former hole department drilling, degree of depth and drilling diameter seal external diameter size for general stopper, here general stopper seal reaming completion after, continue to the drilling of rotor box side, degree of depth and drilling diameter are greater than axle sleeve diameter 4mm, until drilling through. The universal plug seal is installed at the universal plug seal drilling hole and is sealed, the material is a modified polytetrafluoroethylene material, the strength of the material is moderate, the installation is easy, the material is wear-resistant, the material does not react with the material, and the production requirement is met.
Claims (4)
1. Lobe pump sealing device, its characterized in that: the outer side of the double-blade drum shaft (1) is provided with a groove (2), an O-shaped sealing ring (3) is installed in the groove (2), the outer side of the double-blade drum shaft (1) is sleeved with a shaft sleeve (4), the assembled double-blade drum shaft (1) penetrates through a bearing cavity (5) and a rotor box (6), a hole I is formed in the bearing cavity (5), a universal plug seal is installed in the hole I (7) and sealed, the size of the hole I (7) is matched with the outer diameter of the universal plug seal, and a drilling hole II (8) is formed in the position, corresponding to the bearing cavity (5), of the rotor box (6).
2. The roots pump seal of claim 1, wherein: the shaft sleeve (4) is loosely matched with the double-leaf drum shaft (1), and the thickness of the shaft sleeve is 3 mm.
3. The roots pump seal of claim 1, wherein: the diameter of the hole II ((8) is 4mm larger than that of the shaft sleeve (4).
4. The roots pump seal of claim 1, wherein: the flooding plug seal material is a modified polytetrafluoroethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122987470.XU CN216554398U (en) | 2021-12-01 | 2021-12-01 | Roots pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122987470.XU CN216554398U (en) | 2021-12-01 | 2021-12-01 | Roots pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216554398U true CN216554398U (en) | 2022-05-17 |
Family
ID=81578003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122987470.XU Active CN216554398U (en) | 2021-12-01 | 2021-12-01 | Roots pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216554398U (en) |
-
2021
- 2021-12-01 CN CN202122987470.XU patent/CN216554398U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |