CN102979730A - Roots pump - Google Patents
Roots pump Download PDFInfo
- Publication number
- CN102979730A CN102979730A CN2012104141781A CN201210414178A CN102979730A CN 102979730 A CN102979730 A CN 102979730A CN 2012104141781 A CN2012104141781 A CN 2012104141781A CN 201210414178 A CN201210414178 A CN 201210414178A CN 102979730 A CN102979730 A CN 102979730A
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- Prior art keywords
- axle
- cover
- pump housing
- bearing
- shaft
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- Rotary Pumps (AREA)
Abstract
The invention discloses a Roots pump, comprising a pump body. An air inlet is disposed at the top of the pump body; a first air outlet I is disposed at the bottom of the pump body; a second air outlet II is disposed at one side of the pump body; a by-pass valve is disposed in the pump body; two parallel shafts are disposed in the pump body; each of the shaft is provided with a fan blade; both the front end and the back end of each shaft are mounted on a bearing pedestal through a bearing; a bearing cover is sleeved on each bearing; both the front end and the back end of each shaft are provided with a front end cover and a back end cover respectively; the front of each front end cover is connected with a front cover; the back of each back end cover is connected with a back cover; a shaft sleeve is arranged at each front end of each shaft close to the front end cover; the front end of each shaft close to the front end cover is fixed on a shaft seal seat; and a sealing part is disposed between each shaft and the shaft seal seat. The Roots pump has the advantages that the by-pass valve is disposed in the pump body, so that the Roots pump has a gas overload protection function; and the pump body has good mechanical sealing performance, so that gas leakage is effectively prevented; lubricating oil in an oil tank is prevented from being absorbed into the pump cavity; and pollutions toward the oil quality are prevented.
Description
Technical field
The present invention relates to a kind of vacuum pump, relate in particular to a kind of Roots pump.
Background technique
Existing Roots pump utilizes screw action that lubricant oil is arrived in oil tank and reached sealing, exists clearance channel larger, open, when shutting down; easily the lubricant oil in the fuel tank is sucked in the pump chamber, do not reach seal action, only under running up; lubricant oil could be arrived in oil tank, thereby reach sealing effect, because the clearance channel of sealing place is larger; the normal operation meeting is arrived in fuel tank with them; pollute easily oil, simultaneously, bearing weares and teares easily; working life is short, the shortcoming that repair rate is high.Therefore, need to provide a kind of new technological scheme to solve the problems referred to above.
Summary of the invention
The Roots pump that the purpose of this invention is to provide a kind of good airproof performance, long service life.
The technical solution used in the present invention is:
Roots pump, comprise the pump housing, described pump housing top is provided with suction port, described pump housing bottom is provided with the relief opening I, the described pump housing one side is provided with the relief opening II, be provided with bypass valve in the described pump housing, on the described pump housing radiating fin is installed, be provided with two axles that are parallel to each other in the described pump housing, on two axles fan blade is installed all, the rear and front end of every axle all is installed on the bearing support by bearing, described bearing outside cover has bearing cap, front cover and rear end cover are equipped with respectively in the rear and front end of described axle, be equipped with sealing component between described axle and front cover and axle and the rear end cover, the place ahead of described front cover is connected with protecgulum, the rear of described rear end cover is connected with bonnet, the front end of described axle is provided with axle sleeve near the protecgulum place, the front end of described axle is fixed on the shaft seal seat near the protecgulum place, be provided with Sealing between described axle and the shaft seal seat, the front end of described axle is connected with coupling, described coupling and hexagonal elastomer block close contact, and the rear end of described axle is equipped with gear, the rear end of described axle screws by fastening piece, and described pump housing front end is provided with the motor link press span.
Described sealing component is seal ring.
Described Sealing is backbone sealing ring.
Described fastening piece is round nut.
Beneficial effect of the present invention: be provided with bypass valve in the pump housing, have the gas overload protection function, the mechanical sealing performance of this pump housing is good, has effectively stoped the leakage of gas.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the right elevation of Fig. 1.
Wherein: 1, motor link press span, 2, coupling, 3, the shaft seal seat, 4, protecgulum, 5, front cover, 6, the pump housing, 7, rear end cover, 8, seal ring, 9, gear, 10, bonnet, 11, fan blade, 12, axle, 13, relief opening I, 14, the relief opening II, 15, bypass valve, 16, suction port, 17, radiating fin, 18, round nut, 19, bearing support, 20, bearing, 21, bearing cap, 22, backbone sealing ring, 23, axle sleeve, 24, the hexagonal elastomer block.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As illustrated in fig. 1 and 2, Roots pump of the present invention, comprise the pump housing 6, the pump housing 6 tops are provided with suction port 16, the pump housing 6 bottoms are provided with relief opening I 13, the pump housing one side is provided with relief opening II 14, be provided with bypass valve 15 in the pump housing 6, radiating fin 17 is installed on the pump housing 6, be provided with two axles that are parallel to each other 12 in the pump housing 6, on two axles 12 fan blade 11 is installed all, the rear and front end of every axle 12 all is installed on the bearing support 19 by bearing 20, bearing 20 outsides cover has bearing cap 21, front cover 5 and rear end cover 7 are equipped with respectively in the rear and front end of axle 12, be equipped with seal ring 8 between axle 12 and front cover 5 and axle 12 and the rear end cover 7, the place ahead of front cover 5 is connected with protecgulum 4, the rear of rear end cover 7 is connected with bonnet 10, the front end of axle 12 is provided with axle sleeve 23 near protecgulum 4 places, the front end of axle 12 is fixed on the shaft seal seat 3 near protecgulum 4 places, is provided with backbone sealing ring 22 between axle 12 and the shaft seal seat 3, and the front end of axle 6 is connected with coupling 2, coupling 2 and hexagonal elastomer block 24 close contacts, the rear end of axle 6 is equipped with gear 9, and the rear end of axle 6 screws by round nut 18, and the pump housing 6 front ends are provided with motor link press span 1.
Be provided with bypass valve 15 in the pump housing, have the gas overload protection function, the mechanical sealing performance of this pump housing 6 is good, has effectively stoped the leakage of gas, has avoided the lubricant oil in the fuel tank to be inhaled in the pump chamber, pollutes oil.
Claims (4)
1. Roots pump, comprise the pump housing, it is characterized in that: described pump housing top is provided with suction port, described pump housing bottom is provided with the relief opening I, the described pump housing one side is provided with the relief opening II, be provided with bypass valve in the described pump housing, on the described pump housing radiating fin is installed, be provided with two axles that are parallel to each other in the described pump housing, on two axles fan blade is installed all, the rear and front end of every axle all is installed on the bearing support by bearing, described bearing outside cover has bearing cap, front cover and rear end cover are equipped with respectively in the rear and front end of described axle, be equipped with sealing component between described axle and front cover and axle and the rear end cover, the place ahead of described front cover is connected with protecgulum, the rear of described rear end cover is connected with bonnet, the front end of described axle is provided with axle sleeve near the protecgulum place, the front end of described axle is fixed on the shaft seal seat near the protecgulum place, be provided with Sealing between described axle and the shaft seal seat, the front end of described axle is connected with coupling, described coupling and hexagonal elastomer block close contact, and the rear end of described axle is equipped with gear, the rear end of described axle screws by fastening piece, and described pump housing front end is provided with the motor link press span.
2. Roots pump according to claim 1, it is characterized in that: described sealing component is seal ring.
3. Roots pump according to claim 1, it is characterized in that: described Sealing is backbone sealing ring.
4. Roots pump according to claim 1, it is characterized in that: described fastening piece is round nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104141781A CN102979730A (en) | 2012-10-26 | 2012-10-26 | Roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104141781A CN102979730A (en) | 2012-10-26 | 2012-10-26 | Roots pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102979730A true CN102979730A (en) | 2013-03-20 |
Family
ID=47854022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104141781A Pending CN102979730A (en) | 2012-10-26 | 2012-10-26 | Roots pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102979730A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697374A (en) * | 2014-12-16 | 2016-06-22 | 大卫·金 | Roots pump with improved structure |
| CN110345069A (en) * | 2019-08-19 | 2019-10-18 | 成都灏弘科技有限公司 | A kind of motor and the integrated novel lobe pump of the pump housing |
| CN111425399A (en) * | 2020-03-10 | 2020-07-17 | 上海方彧新能源科技有限公司 | Low-noise vacuum pump |
| CN114593063A (en) * | 2020-12-04 | 2022-06-07 | 中国科学院沈阳科学仪器股份有限公司 | Vacuum pump with bypass structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123793A (en) * | 1984-11-16 | 1986-06-11 | Osaka Shinku Kiki Seisakusho:Kk | Roots vacuum pump |
| US20030035738A1 (en) * | 2001-08-14 | 2003-02-20 | Deok-Kyeom Kim | Roots vacuum pump |
| CN101074670A (en) * | 2007-06-18 | 2007-11-21 | 陈全玉 | Oilless roots vacuum pump with mechanical seal |
| CN201027650Y (en) * | 2007-01-04 | 2008-02-27 | 黄平 | Roots vacuum pump |
| CN101545487A (en) * | 2008-03-24 | 2009-09-30 | 阿耐思特岩田株式会社 | Multi-stage rotor pump and manufacturing process thereof |
| CN202001304U (en) * | 2011-01-06 | 2011-10-05 | 浙江真空设备集团有限公司 | Medium pressure difference roots vacuum pump |
| CN202926629U (en) * | 2012-10-26 | 2013-05-08 | 南通龙鹰真空泵业有限公司 | Roots pump |
-
2012
- 2012-10-26 CN CN2012104141781A patent/CN102979730A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123793A (en) * | 1984-11-16 | 1986-06-11 | Osaka Shinku Kiki Seisakusho:Kk | Roots vacuum pump |
| US20030035738A1 (en) * | 2001-08-14 | 2003-02-20 | Deok-Kyeom Kim | Roots vacuum pump |
| CN201027650Y (en) * | 2007-01-04 | 2008-02-27 | 黄平 | Roots vacuum pump |
| CN101074670A (en) * | 2007-06-18 | 2007-11-21 | 陈全玉 | Oilless roots vacuum pump with mechanical seal |
| CN101545487A (en) * | 2008-03-24 | 2009-09-30 | 阿耐思特岩田株式会社 | Multi-stage rotor pump and manufacturing process thereof |
| CN202001304U (en) * | 2011-01-06 | 2011-10-05 | 浙江真空设备集团有限公司 | Medium pressure difference roots vacuum pump |
| CN202926629U (en) * | 2012-10-26 | 2013-05-08 | 南通龙鹰真空泵业有限公司 | Roots pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697374A (en) * | 2014-12-16 | 2016-06-22 | 大卫·金 | Roots pump with improved structure |
| CN105697374B (en) * | 2014-12-16 | 2018-06-12 | 大卫·金 | Lobe pump with improved structure |
| CN110345069A (en) * | 2019-08-19 | 2019-10-18 | 成都灏弘科技有限公司 | A kind of motor and the integrated novel lobe pump of the pump housing |
| CN111425399A (en) * | 2020-03-10 | 2020-07-17 | 上海方彧新能源科技有限公司 | Low-noise vacuum pump |
| CN114593063A (en) * | 2020-12-04 | 2022-06-07 | 中国科学院沈阳科学仪器股份有限公司 | Vacuum pump with bypass structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |