CN203835722U - High-pumping-speed rotary vane type vacuum pump cavity structure - Google Patents
High-pumping-speed rotary vane type vacuum pump cavity structure Download PDFInfo
- Publication number
- CN203835722U CN203835722U CN201420168259.2U CN201420168259U CN203835722U CN 203835722 U CN203835722 U CN 203835722U CN 201420168259 U CN201420168259 U CN 201420168259U CN 203835722 U CN203835722 U CN 203835722U
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- pump
- sheet
- arc
- pump chamber
- vacuum pump
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- 238000005086 pumping Methods 0.000 claims abstract description 20
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000007704 transition Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Abstract
The utility model discloses a rotary vane type vacuum pump and provides a high-pumping-speed rotary vane type vacuum pump cavity structure capable of greatly improving geometrical pumping speed of a vacuum pump under the condition that the rotating speed of the vacuum pump is not increased, low in energy consumption and high in working efficiency. The pump cavity structure solves the technical problem in the prior art that the pumping efficiency of the existing rotary vane type vacuum pump can only be improved by increasing the rotating speed of a motor. The pump cavity structure comprises a pump body and a pump rotor eccentrically connected into a pump body pump cavity in a rotating mode and in tangency with the inner wall of the pump cavity. A pair of rotary vanes is connected onto the pump rotor in a radial sliding mode, the rotary vanes extend outwards and abut against the corresponding inner wall face of the pump cavity in a sliding sealing mode, and an air inlet and an air outlet are arranged in a pump body close to two sides of a tangent point of the pump rotor and the pump cavity. The pump cavity is a columnar cavity defined by an upper arc piece, a lower arc piece and a left arc piece and a right arc piece which are connected between the upper arc piece and the lower arc piece, the connection portions of the four arc pieces are in smooth transition, and the rotary vanes and the inner wall face of the pump cavity are in the sealing abutting state all the time when the rotary vanes slide through the connection portions.
Description
Technical field
The utility model relates to a kind of rotary-vane vaccum pump, relates in particular to a kind ofly can under speed conditions, increase substantially how much pumping speed of vacuum pump waiting, and working efficiency is high, the high pumping rate rotary-vane vaccum pump pump chamber structure that energy consumption is low.
Background technique
Vacuum pump is to utilize the methods such as machinery, physics, chemistry or physical chemistry in a certain enclosed space, to produce, improve and maintain the device of vacuum, it is widely used in the fields such as medication chemistry, electronic technology, vacuum drying, refrigeration, generally be divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump is wherein the widest as backing pump application area, accounts for 60%～70% in vacuum equipment configuration.The speed of exhaust of rotary-vane vaccum pump is mainly determined by key elements such as the pump chamber of vacuum pump, rotor, throw of eccentric, rotating speeds, when the key dimensions such as the pump housing of vacuum pump, rotor, throw of eccentric are determined, the working efficiency of bleeding in order to improve rotary-vane vaccum pump, conventional method is to improve the rotating speed of vacuum pump, the motor speed of vacuum pump is brought up to 1400 revs/min from 500 revs/min, even rotating speed is brought up to 3000 revs/min.Although the raising of rotating speed can improve the working efficiency that vacuum pump is bled, there will be the temperature rise of vacuum pump to increase simultaneously, the wearing and tearing aggravation of blade, working stability declines, the reduction of pumping fluid life-span waits series of problems, directly affects the normal performance of vacuum pump performance.
Summary of the invention
The utility model has mainly been to provide a kind of geometry pumping speed that can increase substantially vacuum pump in the situation that not improving vacuum pump rotating speed, energy consumption is low, the high pumping rate rotary-vane vaccum pump pump chamber structure that working efficiency is high, solve the rotary-vane vaccum pump existing in prior art and can only improve by increasing the rotating speed of motor the pumping efficiency of vacuum pump, thereby cause the temperature rise of vacuum pump to increase, the wearing and tearing aggravation of blade, working stability declines, the technical problem of pumping fluid life-span reduction etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high pumping rate rotary-vane vaccum pump pump chamber structure, comprise the pump housing and eccentric be rotatably connected in pump housing pump chamber and the pump rotor tangent with pump chamber inwall, on pump rotor, radially slide and connecting a pair of blade, blade stretches out and the envelope of sliding is against on corresponding pump chamber internal face, and be provided with suction port and relief opening on the both sides pump housing near pump rotor and pump chamber points of tangency, described pump chamber is by upper arc-like sheet, arc lower sheet and be connected to arc-like sheet and arc lower sheet between left arc-like sheet and the column cavity that encloses of right arc-like sheet, upper arc-like sheet, arc lower sheet, the joint smooth transition of left arc-like sheet and right arc-like sheet, and when blade slides past joint and pump chamber internal face remain that envelope supports state.By upper, under, left, the column cavity that right four arc-like sheets enclose is as the pump chamber of vacuum pump, with respect to traditional positive pulsator cavity configuration, its leaving area increases, thus can be in the situation that vacuum pump rotating speed be constant, by increasing leaving area, realize the object that improves how much pumping speed of vacuum pump, the working efficiency of vacuum pump is high, energy consumption is low, and avoided the vacuum pump energy consumption that produces by improving vacuum pump rotating speed high, temperature rise is large, the wearing and tearing aggravation of blade, pump life of oil reduces, the technical problem of degradation under the working stability of vacuum pump, guaranteeing that vacuum pump is normal, in the situation of stable operation, improved the speed of exhaust.
As preferably, the radial center face of described upper arc-like sheet and arc lower sheet is coplanar, and pump rotor is inscribed within the middle part of arc-like sheet.Guarantee that vacuum pump keeps air-flow steady in suction and discharge process, is beneficial to the smooth running of vacuum pump.
As more preferably, the size of described left arc-like sheet and right arc-like sheet and shape is identical and relatively go up arc-like sheet or arc lower sheet radial center face is symmetric.Make the pump chamber of vacuum pump be symmetrical state, guarantee that vacuum pump pump chamber pressure in whole service process changes balanced, air-flow is steady, improves the stability of vacuum pump operation.
Between upper and lower arc-like sheet, also can connect by the curved surface of other shape, as preferably, the cross section of described upper arc-like sheet and arc lower sheet is elliptic curve, and the cross section of left arc-like sheet and right arc-like sheet is equal diameter circular arc line.When elliptic curve is connected with the upper and lower arc-like sheet of circular shape, joint seamlessly transits, guarantee that blade can not beat or stuck phenomenon at tie point, and after crossing tie point, can also guarantee that blade is along the smooth operation of oval-shaped pump chamber, make blade and pump chamber internal face remain that envelope is to state.
Therefore, high pumping rate rotary-vane vaccum pump pump chamber structure of the present utility model has following advantage: the column cavity being enclosed by four arc-like sheets is as the pump chamber of vacuum pump, and pump chamber joint seamlessly transits and is left, right symmetry, with respect to traditional positive pulsator cavity configuration, effectively aspirated volume increases, therefore in the situation that vacuum pump rotating speed is constant, by increasing effective aspirated volume of pump chamber, realized the object that improves how much pumping speed of vacuum pump, and vacuum pump normal operation is stable, working efficiency is high, energy consumption is low, and the vacuum pump energy consumption producing while having avoided improving vacuum pump rotating speed is high, temperature rise is large, the wearing and tearing aggravation of blade, pump life of oil reduces, degradation problem under the working stability of vacuum pump.
accompanying drawing explanation:
Fig. 1 is the structural representation of the utility model high pumping rate rotary-vane vaccum pump pump chamber structure;
Fig. 2 is the structural representation of pump chamber profile in the utility model;
embodiment:
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, a kind of high pumping rate rotary-vane vaccum pump pump chamber structure of the present utility model comprises the pump rotor 2 in the pump housing 1 receiving cavity 11 that is rotatably connected on of the pump housing 1 and bias, on pump rotor 2, have a radially groove, a pair of blade 3 is radially being slidably connected in groove radially, the two ends of blade 3 radially extend to respectively the outer also envelope of pump rotor 2 and are against on corresponding receiving cavity 11 internal faces, blade 3 ends corresponding with the inwall of receiving cavity 11 are arc surfaced, and blade 3 ends of arc surfaced all with between corresponding receiving cavity 11 internal faces keep airtight being slidably connected, as shown in Figure 2, pump chamber 11 is by upper arc-like sheet 6, arc lower sheet 7 and be connected to arc-like sheet 6 and column cavity that the left arc-like sheet 8 of 7 of arc lower sheets and right arc-like sheet 9 enclose, the radial center face of upper arc-like sheet 6 and arc lower sheet 7 is coplanar, pump rotor 2 is inscribed within the middle part of arc-like sheet 6, the size of left arc-like sheet 8 and right arc-like sheet 9 and shape is identical and relatively go up arc-like sheet 6 or arc lower sheet 7 radial center faces are symmetric, upper arc-like sheet 6 wherein and the cross section of arc lower sheet 7 are elliptic curve, the cross section of left arc-like sheet 8 and right arc-like sheet 9 is equal diameter circular arc line, upper arc-like sheet 6, arc lower sheet 7, the joint smooth transition of left arc-like sheet 8 and right arc-like sheet 9, while guaranteeing that blade 3 slides past joint and pump chamber 11 internal faces remain that envelope supports state.On the both sides pump housing 1 near pump rotor 2 and arc-like sheet 6 point of contacts, have a suction port 4 and a relief opening 5.
Specific embodiment described herein is only to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (4)
1. a high pumping rate rotary-vane vaccum pump pump chamber structure, comprise the pump housing (1) and eccentric be rotatably connected in the pump housing (1) pump chamber (11) and the pump rotor (2) tangent with pump chamber (11) inwall, on pump rotor (2), radially slide and connecting a pair of blade (3), blade (3) stretches out and the envelope of sliding is against on corresponding pump chamber (11) internal face, and be provided with suction port (4) and relief opening (5) on the both sides pump housing (1) near pump rotor (2) and pump chamber (11) points of tangency, it is characterized in that: described pump chamber (11) is by upper arc-like sheet (6), arc lower sheet (7) and be connected to arc-like sheet (6) and arc lower sheet (7) between left arc-like sheet (8) and the column cavity that encloses of right arc-like sheet (9), upper arc-like sheet (6), arc lower sheet (7), the joint of left arc-like sheet (8) and right arc-like sheet (9) is smooth excessively, and when blade (3) slides past joint and pump chamber (11) internal face remain that envelope supports state.
2. high pumping rate rotary-vane vaccum pump pump chamber structure according to claim 1, is characterized in that: the radial center face of described upper arc-like sheet (6) and arc lower sheet (7) is coplanar, and pump rotor (2) is inscribed within the middle part of arc-like sheet (6).
3. high pumping rate rotary-vane vaccum pump pump chamber structure according to claim 2, is characterized in that: the size of described left arc-like sheet (8) and right arc-like sheet (9) and shape is identical and relatively go up arc-like sheet (6) or arc lower sheet (7) radial center face is symmetric.
4. according to the high pumping rate rotary-vane vaccum pump pump chamber structure described in claim 1 or 2 or 3, it is characterized in that: the cross section of described upper arc-like sheet (6) and arc lower sheet (7) is elliptic curve, the cross section of left arc-like sheet (8) and right arc-like sheet (9) is equal diameter circular arc line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168259.2U CN203835722U (en) | 2014-04-09 | 2014-04-09 | High-pumping-speed rotary vane type vacuum pump cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168259.2U CN203835722U (en) | 2014-04-09 | 2014-04-09 | High-pumping-speed rotary vane type vacuum pump cavity structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835722U true CN203835722U (en) | 2014-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420168259.2U Expired - Lifetime CN203835722U (en) | 2014-04-09 | 2014-04-09 | High-pumping-speed rotary vane type vacuum pump cavity structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN203835722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982430A (en) * | 2014-04-09 | 2014-08-13 | 浙江飞越机电有限公司 | High-pumping speed rotary-vane vacuum pump chamber structure and design method for pump chamber profile |
-
2014
- 2014-04-09 CN CN201420168259.2U patent/CN203835722U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982430A (en) * | 2014-04-09 | 2014-08-13 | 浙江飞越机电有限公司 | High-pumping speed rotary-vane vacuum pump chamber structure and design method for pump chamber profile |
| CN103982430B (en) * | 2014-04-09 | 2016-02-17 | 浙江飞越机电有限公司 | The design method of high pumping rate rotary-vane vaccum pump pump chamber structure and pump chamber profile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |