CN201262152Y - Active opening/closing type axial exhaust screw vacuum pump - Google Patents
Active opening/closing type axial exhaust screw vacuum pump Download PDFInfo
- Publication number
- CN201262152Y CN201262152Y CNU2008200269499U CN200820026949U CN201262152Y CN 201262152 Y CN201262152 Y CN 201262152Y CN U2008200269499 U CNU2008200269499 U CN U2008200269499U CN 200820026949 U CN200820026949 U CN 200820026949U CN 201262152 Y CN201262152 Y CN 201262152Y
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- China
- Prior art keywords
- screw
- vacuum pump
- handed screw
- type axial
- axial exhaust
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- Expired - Lifetime
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
An active opening and closing type axial exhaust screw vacuum pump belongs to the field of vacuum acquisition equipment. The active opening and closing type axial exhaust screw vacuum pump comprises a motor (1), a support (2), a coupling (3), front and back covers (4, 11), a synchronizing gear (5), front and back bearings (6, 12), a pump body (8), a right-handed screw (9), a left-handed screw (10) and an exhaust port (13), wherein, the motor (1) is connected with the right-handed screw (9) through the coupling (3), the right-handed screw (9) is connected with the left-handed screw (10) through the synchronizing gear (5), the left-handed screw and the right-handed screw (10, 9) are arranged in the pump body (8) through the front and the back bearings (6, 12), and the exhaust port (13) is formed on the middle wall (7) of the pump body. The active opening and closing type axial exhaust screw vacuum pump changes the radial exhaust port to the axial exhaust port, thereby increasing the utilization of the effective length of the screws; meanwhile, the end surfaces of the screws are matched with the exhaust port during the rotation process of the screws, thereby having the effects of opening and closing. The active opening and closing type axial exhaust screw vacuum pump can reduce the pulsation of airflow and reduce the noise.
Description
Technical field
Initiatively open-close type axial exhaust screw vacuum pump belongs to the pumping equipment field, is specifically related to a kind of axial exhaust screw vacuum pump that initiatively opens and closes degassing function that has.
Background technique
Screw vacuum pump is that the international developed country of the nineties in last century begins to make the novel dry vacuum pump of application, the product manufacturing substantially also is in space state in China, screw vacuum pump has simple in structure, gas directly enters atmosphere, the separate unit ultimate pressure can reach advantages such as 1Pa, thereby be a kind of advanced person's vacuum pump, have vast market prospect.But the screw vacuum pump of producing mostly is radially relief opening at present, and this structure has occupied certain screw rod effective length when mounted, has reduced the screw rod utilization ratio.When working, cause very big noise more greatly simultaneously, be unfavorable for the requirement of productive life owing to gas.
The model utility content
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of axial exhaust is provided, relief opening initiatively opens and closes, screw rod utilization ratio height, and noise is little, active open-close type axial exhaust screw vacuum pump low in energy consumption.
The technological scheme that its technical problem that solves the utility model adopts is: this active open-close type axial exhaust screw vacuum pump, comprise motor, support, coupling, forward and backward lid, synchromesh gear, forward and backward bearing, the pump housing, right handed screw, left handed screw, relief opening, motor links to each other with right handed screw by coupling, right handed screw is connected with left handed screw by synchromesh gear, left and right revolve screw rod by forward and backward Bearing Installation in the pump housing, it is characterized in that: have relief opening on the pump housing mesospore.
Relief opening is a crescent shape.
Relief opening is an involute shape.
Relief opening is fan-shaped.
Relief opening is located on the pump housing mesospore can increase making full use of the screw rod effective length.The screw rod of involute shape end face matches with the crescent shape relief opening in rotary course, plays the effect of opening, closing, and forms the outlet valve that initiatively opens and closes.
Compared with prior art, the beneficial effect that active open-close type axial exhaust screw vacuum pump of the present utility model is had is: the radially relief opening of screw pump is become axial exhaust port, increased utilization to the screw rod effective length, pass through the shape and the position of appropriate design relief opening simultaneously, the screw rod end face is matched with relief opening, play the effect of opening, closing, form a kind of outlet valve that can initiatively open and close, this design can reduce pulsation, the reduction noise of air-flow.The exhaust structure at this intermittence simultaneously can make gas compress the reduction power consumpiton in producing in pump chamber.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is that Fig. 1 F is to the exhaust outlet structure schematic representation;
Fig. 3 is a screw rod end face E-E cross-sectional schematic.
Fig. 4 is the working principle schematic representation.
Fig. 1-the 4th, the utility model be the most preferred embodiment of open-close type axial exhaust screw vacuum pump initiatively.Wherein: 1, motor 2, support 3, coupling 4, protecgulum 5, synchromesh gear 6, fore bearing 7, pump housing mesospore 8, the pump housing 9, right handed screw 10, left handed screw 11, bonnet 12, rear bearing 13, relief opening.
Embodiment
1-4 is described further the utility model below in conjunction with accompanying drawing:
With reference to accompanying drawing 1:
This active open-close type axial exhaust screw vacuum pump is by motor 1, support 2, coupling 3, before, bonnet 4,11, synchromesh gear 5, before, rear bearing 6,12, the pump housing 8, right handed screw 9, left handed screw 10, relief opening 13 is formed, motor 1 links to each other with right handed screw 9 by coupling 3, phase place when right handed screw 9 is rotated to keep it by synchromesh gear 5 drive left handed screw 10 rotations synchronously, the synchromesh gear 5 outer protecgulums 4 of installing, a left side, right handed screw 10,9 pass through before, rear bearing 6,12 are installed in the pump housing 8, a left side, right handed screw 10,9 section is involute shape but rotation direction is opposite, the rear bearing 12 outer bonnets 11 of installing, have relief opening 13 on the pump housing mesospore 7, gas enters in the pump housing 8 by the suction port that is located on the pump housing 8, by a left side, right handed screw 10, the end of two screw rods is taken in 9 turning effort to, enters atmosphere by the relief opening on the pump housing mesospore 7 13.
With reference to accompanying drawing 2:
Be home position and the shape of relief opening 13 on pump housing mesospore 7, the outer edge of meniscate relief opening 13 promptly be left and right revolve screw rod 10,9 end faces by the gradual change of outer radial internal diameter the part of curve.According to the design needs, relief opening can also be designed to involute shape or fan-shaped other shapes that waits.
With reference to accompanying drawing 3:
Be left and right shape of revolving screw rod 10,9 end faces.
With reference to accompanying drawing 4:
Working principle and working procedure are: when the A position, relief opening 13 is by left and right screw rod 10, the 9 end face complete closed of revolving, there is not exhaust process, left and right B, C, the D relief opening of screw rod 10,9 in rotation that revolve all is closed, when turning to the E position, relief opening 13 begins to open, be about to begin exhaust, up to F, G position relief opening 13 all is the process of progressively opening, relief opening 13 is opened fully when the H position, also is about to simultaneously be begun sealing, is closed gradually from I, J position relief opening 13 then, Close All when the A position, new circulation restarts.
Claims (4)
1, active open-close type axial exhaust screw vacuum pump, comprise motor (1), support (2), coupling (3), before, bonnet (4,11), synchromesh gear (5), before, rear bearing (6,12), the pump housing (8), right handed screw (9), left handed screw (10), relief opening (13), motor (1) links to each other with right handed screw (9) by coupling (3), right handed screw (9) is connected with left handed screw (10) by synchromesh gear (5), a left side, right handed screw (10,9) pass through before, rear bearing (6,12) be installed in the pump housing (8), it is characterized in that: have relief opening (13) on the pump housing mesospore (7).
2, active open-close type axial exhaust screw vacuum pump according to claim 1 is characterized in that: relief opening (13) is a crescent shape.
3, active open-close type axial exhaust screw vacuum pump according to claim 1 is characterized in that: relief opening (13) is an involute shape.
4, active open-close type axial exhaust screw vacuum pump according to claim 1 is characterized in that: relief opening (13) is for fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200269499U CN201262152Y (en) | 2008-08-18 | 2008-08-18 | Active opening/closing type axial exhaust screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200269499U CN201262152Y (en) | 2008-08-18 | 2008-08-18 | Active opening/closing type axial exhaust screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262152Y true CN201262152Y (en) | 2009-06-24 |
Family
ID=40808626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200269499U Expired - Lifetime CN201262152Y (en) | 2008-08-18 | 2008-08-18 | Active opening/closing type axial exhaust screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262152Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302039A (en) * | 2018-02-07 | 2018-07-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
| CN110566456A (en) * | 2019-09-12 | 2019-12-13 | 东莞市雅之雷德机电科技有限公司 | Oil-free screw fan |
-
2008
- 2008-08-18 CN CNU2008200269499U patent/CN201262152Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302039A (en) * | 2018-02-07 | 2018-07-20 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
| CN108302039B (en) * | 2018-02-07 | 2024-02-27 | 珠海格力电器股份有限公司 | Compressor and air conditioner with same |
| CN110566456A (en) * | 2019-09-12 | 2019-12-13 | 东莞市雅之雷德机电科技有限公司 | Oil-free screw fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEIHAI GENT VACUUM S+T CO., LTD. Free format text: FORMER OWNER: ZIBO GANSHI VACUUM PUMP CO., LTD. Effective date: 20121121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 255088 ZIBO, SHANDONG PROVINCE TO: 264400 WEIHAI, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121121 Address after: 264400, No. 17, Xing Xing Road, Wendeng Industrial Park, Weihai, Shandong Patentee after: Weihai Witwin Vacuum Science & Technology Co., Ltd. Address before: Zibo science and Technology Industrial Park in Shandong city of Zibo Province Zhang Liulu 255088 Patentee before: Zibo Ganshi Vacuum Pump Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090624 |