CN204692094U - A kind of combined sealing structure Roots pump - Google Patents
A kind of combined sealing structure Roots pump Download PDFInfo
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- CN204692094U CN204692094U CN201520374118.0U CN201520374118U CN204692094U CN 204692094 U CN204692094 U CN 204692094U CN 201520374118 U CN201520374118 U CN 201520374118U CN 204692094 U CN204692094 U CN 204692094U
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- seal ring
- rotating shaft
- oil pocket
- piston ring
- circle
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Abstract
The utility model discloses a kind of combined sealing structure Roots pump, be intended to the isolating seal poor effect solving existing Roots pump oil pocket and pump chamber, cause the deficiency of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket.This model utility comprises the pump housing, front side cap, rear side cover, protecgulum, bonnet, drive motor, drive motor output shaft is fixedly connected with rotating shaft, oil pocket is provided with in rear side cover, pump chamber is provided with in the pump housing, in oil pocket, bearing is installed, centrifugal anti-impeller, stationary seal ring, piston ring seal ring, fixed cover, rotating shaft is arranged in bearing, centrifugal anti-impeller and piston ring seal ring are closely socketed in rotating shaft, fixed cover is fixedly mounted in rear side cover, piston ring seal ring set is connected in fixed cover, fixed cover rear end outer wall is provided with a circle defining flange, defining flange outward edge is provided with limited ring protruding backward, centrifugal anti-wheel nose face is provided with a circle restraining groove, stationary seal ring is arranged between restraining groove and defining flange.
Description
Technical field
The utility model relates to a kind of vacuum pump, and more particularly, it relates to a kind of combined sealing structure Roots pump.
Background technique
Roots pump is a kind of oil-sealed rotary pump, uses field wide, the height in Roots pump working life, except by except the impact of Environmental Conditions, also by the impact of the quality and performance of itself.The structural requirement pump chamber of Roots pump must be kept apart with the cavity installing bearing and gear, and isolation method is generally sealing.React existing Roots pump from the market to have certain ratio to there is lubricant oil to reveal phenomenon into pump chamber from oil pocket; Also have certain proportion to there is the condensed water when improper use and suck the phenomenon of oil suction chamber from pump chamber, cause lubricant oil to lose efficacy, and then damage the parts such as bearing and gear.Cause the main cause of these phenomenons to be sealing configuration existing defects, sealing effect is not good.
Model utility content
The utility model overcomes the isolating seal poor effect of existing Roots pump oil pocket and pump chamber, cause the deficiency of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket, provide a kind of combined sealing structure Roots pump, the isolating seal of Roots pump oil pocket and pump chamber is effective, effectively prevent the phenomenon of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of combined sealing structure Roots pump, comprise the pump housing, be connected to front side cap and the rear side cover of pump housing rear and front end, be connected to the protecgulum in front side cap and rear side cover and bonnet, be arranged on the drive motor on protecgulum, drive motor output shaft is fixedly connected with rotating shaft, rotating shaft rear end is arranged in bonnet, rotor is installed in rotating shaft, rotor is arranged in the pump housing, oil pocket is provided with in rear side cover, pump chamber is provided with in the pump housing, in oil pocket, bearing is installed, centrifugal anti-impeller, stationary seal ring, piston ring seal ring, fixed cover, rotating shaft is arranged in bearing, centrifugal anti-impeller and piston ring seal ring are closely socketed in rotating shaft, centrifugal anti-impeller rear and front end is connected on piston ring seal ring and bearing face respectively, fixed cover is fixedly mounted in rear side cover, piston ring seal ring set is connected in fixed cover, fixed cover rear end outer wall is provided with a circle defining flange, defining flange outward edge is provided with limited ring protruding backward, centrifugal anti-wheel nose face is provided with a circle restraining groove, stationary seal ring is arranged between restraining groove and defining flange.
During Roots pump work, lubricant oil attached thereto is got rid of back bearing by the centrifugal anti-impeller rotated, and be not centrifuged lubricant oil that anti-impeller gets rid of back and stopped in stationary seal ring position and can not enter pump chamber, piston ring seal ring serves the effect of double insurance, when stationary seal ring occurs surprisingly can not undertaking seal action, piston ring seal ring plays seal action.When user's misoperation causes pump chamber at stationary seal ring inwall mineralization pressure, can increase the sealing effect of stationary seal ring from outer absorbent member, thus the water of pump chamber is stoped to enter oil pocket.The isolating seal of this combined sealing structure Roots pump oil pocket and pump chamber is effective, effectively prevent the phenomenon of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket.
As preferably, stationary seal ring inwall is provided with the tensioning groove of a circle V-arrangement, stationary seal ring rear end is provided with a circle spacing preiection near inner wall position, and spacing preiection is arranged in restraining groove, the angle position of stationary seal ring front end mounting limit between defining flange and limited ring.As because user's misoperation causes pump chamber can at tensioning groove mineralization pressure from outer absorbent member, this pressure is more adjacent to by the sealing surface of stationary seal ring, thus stops the water of pump chamber to enter oil pocket.
As preferably, piston ring seal ring outer wall is provided with the protruding seal ring of some circles.The piston ring seal ring seal of this structure is good.
As preferably, rotating shaft is provided with a circle bulge loop near piston ring seal ring position, and piston ring seal ring front-end face is connected on bulge loop, and piston ring seal ring front inner wall position is provided with a circle chamfering.Piston ring seal ring is connected with rotating shaft reliably, and connection sealing is good.
Compared with prior art, the beneficial effects of the utility model are: the isolating seal of combined sealing structure Roots pump oil pocket and pump chamber is effective, effectively prevent the phenomenon of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is close-up schematic view of the present utility model;
In figure: 1, the pump housing, 2, front side cap, 3, rear side cover, 4, protecgulum, 5, bonnet, 6, drive motor, 7, rotating shaft, 8, rotor, 9, oil pocket, 10, pump chamber, 11, bearing, 12, centrifugal anti-impeller, 13, stationary seal ring, 14, piston ring seal ring, 15, fixed cover, 16, defining flange, 17, limited ring, 18, restraining groove, 19, tensioning groove, 20, spacing preiection, 21, seal ring, 22, bulge loop.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described specifically:
Embodiment: a kind of combined sealing structure Roots pump is (see accompanying drawing 1, accompanying drawing 2), comprise the pump housing 1, be connected to front side cap 2 and the rear side cover 3 of pump housing rear and front end, be connected to the protecgulum 4 in front side cap and rear side cover and bonnet 5, be arranged on the drive motor 6 on protecgulum, drive motor output shaft is fixedly connected with rotating shaft 7, rotating shaft rear end is arranged in bonnet, rotating shaft is installed rotor 8, rotor is arranged in the pump housing, oil pocket 9 is provided with in rear side cover, pump chamber 10 is provided with in the pump housing, bearing 11 is installed in oil pocket, centrifugal anti-impeller 12, stationary seal ring 13, piston ring seal ring 14, fixed cover 15, rotating shaft is arranged in bearing, centrifugal anti-impeller and piston ring seal ring are closely socketed in rotating shaft, centrifugal anti-impeller rear and front end is connected on piston ring seal ring and bearing face respectively, fixed cover is fixedly mounted in rear side cover, piston ring seal ring set is connected in fixed cover, fixed cover rear end outer wall is provided with a circle defining flange 16, defining flange outward edge is provided with limited ring 17 protruding backward, centrifugal anti-wheel nose face is provided with a circle restraining groove 18, stationary seal ring is arranged between restraining groove and defining flange.Stationary seal ring inwall is provided with the tensioning groove 19 of a circle V-arrangement, and stationary seal ring rear end is provided with a circle spacing preiection 20 near inner wall position, and spacing preiection is arranged in restraining groove, the angle position of stationary seal ring front end mounting limit between defining flange and limited ring.Piston ring seal ring outer wall is provided with the seal ring 21 of two circle projections.Rotating shaft is provided with a circle bulge loop 22 near piston ring seal ring position, and piston ring seal ring front-end face is connected on bulge loop, and piston ring seal ring front inner wall position is provided with a circle chamfering.
During Roots pump work, lubricant oil attached thereto is got rid of back bearing by the centrifugal anti-impeller rotated, and be not centrifuged lubricant oil that anti-impeller gets rid of back and stopped in stationary seal ring position and can not enter pump chamber, piston ring seal ring serves the effect of double insurance, when stationary seal ring occurs surprisingly can not undertaking seal action, piston ring seal ring plays seal action.When user's misoperation causes pump chamber at stationary seal ring inwall mineralization pressure, can increase the sealing effect of stationary seal ring from outer absorbent member, thus the water of pump chamber is stoped to enter oil pocket.The isolating seal of this combined sealing structure Roots pump oil pocket and pump chamber is effective, effectively prevent the phenomenon of condensed water suction oil pocket in oil leak to pump chamber or pump chamber in oil pocket.
Above-described embodiment is one of the present utility model preferably scheme, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technological scheme described in claim.
Claims (4)
1. a combined sealing structure Roots pump, comprise the pump housing, be connected to front side cap and the rear side cover of pump housing rear and front end, be connected to the protecgulum in front side cap and rear side cover and bonnet, be arranged on the drive motor on protecgulum, drive motor output shaft is fixedly connected with rotating shaft, rotating shaft rear end is arranged in bonnet, rotor is installed in rotating shaft, rotor is arranged in the pump housing, it is characterized in that, oil pocket is provided with in rear side cover, pump chamber is provided with in the pump housing, in oil pocket, bearing is installed, centrifugal anti-impeller, stationary seal ring, piston ring seal ring, fixed cover, rotating shaft is arranged in bearing, centrifugal anti-impeller and piston ring seal ring are closely socketed in rotating shaft, centrifugal anti-impeller rear and front end is connected on piston ring seal ring and bearing face respectively, fixed cover is fixedly mounted in rear side cover, piston ring seal ring set is connected in fixed cover, fixed cover rear end outer wall is provided with a circle defining flange, defining flange outward edge is provided with limited ring protruding backward, centrifugal anti-wheel nose face is provided with a circle restraining groove, stationary seal ring is arranged between restraining groove and defining flange.
2. a kind of combined sealing structure Roots pump according to claim 1, it is characterized in that, stationary seal ring inwall is provided with the tensioning groove of a circle V-arrangement, stationary seal ring rear end is provided with a circle spacing preiection near inner wall position, spacing preiection is arranged in restraining groove, the angle position of stationary seal ring front end mounting limit between defining flange and limited ring.
3. a kind of combined sealing structure Roots pump according to claim 1 and 2, is characterized in that, piston ring seal ring outer wall is provided with the protruding seal ring of some circles.
4. a kind of combined sealing structure Roots pump according to claim 1 and 2, is characterized in that, rotating shaft is provided with a circle bulge loop near piston ring seal ring position, and piston ring seal ring front-end face is connected on bulge loop, and piston ring seal ring front inner wall position is provided with a circle chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520374118.0U CN204692094U (en) | 2015-06-03 | 2015-06-03 | A kind of combined sealing structure Roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520374118.0U CN204692094U (en) | 2015-06-03 | 2015-06-03 | A kind of combined sealing structure Roots pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692094U true CN204692094U (en) | 2015-10-07 |
Family
ID=54232395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520374118.0U Active CN204692094U (en) | 2015-06-03 | 2015-06-03 | A kind of combined sealing structure Roots pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692094U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089707A (en) * | 2016-06-13 | 2016-11-09 | 江苏润海能源科技有限公司 | Energy-saving and high-pressure Roots blower |
| CN106990020A (en) * | 2017-06-01 | 2017-07-28 | 魏钦磊 | The online rheological analysis device of polymer solution high pressure |
| CN112682309A (en) * | 2020-12-14 | 2021-04-20 | 兰州空间技术物理研究所 | Effectively reduce lobe pump seal structure of lubricating oil to cavity leakage |
-
2015
- 2015-06-03 CN CN201520374118.0U patent/CN204692094U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089707A (en) * | 2016-06-13 | 2016-11-09 | 江苏润海能源科技有限公司 | Energy-saving and high-pressure Roots blower |
| CN106990020A (en) * | 2017-06-01 | 2017-07-28 | 魏钦磊 | The online rheological analysis device of polymer solution high pressure |
| CN112682309A (en) * | 2020-12-14 | 2021-04-20 | 兰州空间技术物理研究所 | Effectively reduce lobe pump seal structure of lubricating oil to cavity leakage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |