CN203730319U - Composite vacuum pump chamber structure - Google Patents
Composite vacuum pump chamber structure Download PDFInfo
- Publication number
- CN203730319U CN203730319U CN201420068684.4U CN201420068684U CN203730319U CN 203730319 U CN203730319 U CN 203730319U CN 201420068684 U CN201420068684 U CN 201420068684U CN 203730319 U CN203730319 U CN 203730319U
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- China
- Prior art keywords
- rotor
- vacuum pump
- receiving cavity
- pump
- row gas
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The utility model discloses a vacuum pump chamber structure, provides a composite vacuum pump chamber structure which is simple in structure, energy-saving and efficient and can change extraction rate and limit vacuum degree of the vacuum pump according to process requirements, and solves the technical problem of unnecessary energy waste caused by the fact that the extraction rate and the limit vacuum degree cannot be changed in the prior art. The composite vacuum pump chamber structure comprises a pump body and a rotor rotationally connected into an accommodating cavity of the pump body, wherein rotary pieces are glidingly connected onto the rotor in the radial direction, extend out of the rotor and closely abut against the inner wall surface of the accommodating cavity of the pump body; the annular inner wall surface of the accommodating cavity of the pump body is arc-shaped; the rotor is rotationally connected into the accommodating cavity and tangent to the inner wall surface of the accommodating cavity to form an upper axial tangent line and a lower axial tangent line; a first air inlet and a second exhaust port are formed in two sides, close to the upper axial tangent line, of the pump body; a second air inlet and a first exhaust port are formed in two sides, close to the lower axial tangent line, of the pump body; and a combination valve which can change the airflow feeding and discharging directions is arranged between the second air inlet and the first exhaust port.
Description
Technical field
The utility model relates to a kind of vacuum pump pump chamber structure, relates in particular to a kind of speed of exhaust that can change according to technological requirement vacuum pump, and composite vacuum pump pump chamber structure that can synchronous change ultimate vacuum.
Background technique
Vacuum pump is widely used in all kinds of vacuum systems, and its major function is to provide certain degree of vacuum for process system.According to vacuum theory, for airtight vacuum system, the gas storage in its space is along with the operation of vacuum pump reduces gradually, degree of vacuum rises gradually, the actual conditions of vacuum system is: owing to there being a large amount of gas in vacuum system, in the time that vacuum pump is started working, the degree of vacuum of vacuum system is lower, now need the pumping speed of vacuum pump large as much as possible, after the degree of vacuum of vacuum system rises gradually, in vacuum system, eliminable gas flow reduces gradually, now as continued to use the vacuum pump of large air displacement, be equivalent to low load with strong power, thereby cause unnecessary energy waste.And existing vacuum pump is all generally to have fixing pumping speed and fixing ultimate vacuum, in order to meet the job requirement of vacuum system, often select when vacuum pump in meeting ultimate vacuum and requiring, carry out vacuum pump according to needed maximum pumping speed, therefore energy waste has generality in vacuum pump using process.
Summary of the invention
The utility model has mainly been to provide a kind of simple in structure, energy efficiency, can change according to technological requirement the speed of exhaust of vacuum pump, and composite vacuum pump pump chamber structure that can synchronous change ultimate vacuum, having solved the speed of exhaust and the ultimate vacuum that in prior art, exist cannot change according to requirements, thereby causes the technical problem of unnecessary energy waste.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of composite vacuum pump pump chamber structure, comprise the pump housing and be rotatably connected on the rotor in pump housing receiving cavity, on rotor, radially slide and connecting blade, blade extends to the outer also envelope of rotor and is against on pump housing receiving cavity internal face, the annular inner wall face of described pump housing receiving cavity is curved, rotor be rotatably connected in receiving cavity and with the tangent rear formation of internal face of receiving cavity on axial tangent line and lower axial tangent line, near on axially the pump housing both sides of tangent line be provided with the first suction port and second row gas port, be provided with the second suction port and first row gas port in the pump housing both sides near lower axial tangent line, and be provided with the combination brake switch and proporting that can change intake and exhaust flow path direction between the second suction port and first row gas port.By rotor, pump housing receiving cavity is separated into two receiving cavities in left and right, two receiving cavities in left and right be equipped with into, relief opening, and the relief opening of a side receiving cavity is connected with the suction port of opposite side receiving cavity by combination brake switch and proporting again, because starting initial vacuum system, vacuum pump is full of gas, therefore need vacuum pump to there is the large speed of exhaust to meet the pressure of fast reducing vacuum system, to improve system vacuum degree, because combination brake switch and proporting can change the direction that intake and exhaust are flowed, now block being connected of a side receiving cavity relief opening and opposite side receiving cavity suction port by combination brake switch and proporting, the pump housing has formed two independently single-stage sliding vane rotary pumps, starting the intrasystem gas of vacuum pump final vacuum enters in receiving cavity corresponding to rotor both sides from the first suction port and the second suction port simultaneously, and discharge from corresponding first row gas port and second row gas port respectively after the effect lower compression of blade, and then improve the speed of exhaust of vacuum pump, when the pressure of vacuum system further declines, after degree of vacuum rises gradually, in system, eliminable gas flow reduces gradually, now for fear of the phenomenon of low load with strong power, cause unnecessary energy waste, by combination brake switch and proporting, the receiving cavity of both sides is connected again, gas in vacuum system enter in the receiving cavity of respective side from the first suction port, after the effect lower compression of blade, in entering the receiving cavity of opposite side, combination brake switch and proporting again compresses, discharge finally by second row gas port, it is pump has been become twin-stage sliding vane rotary pump mode of operation by the working mode change of two single-stage sliding vane rotary pumps, ultimate vacuum improves, thereby meet the degree of vacuum requirement of vacuum system, pump chamber is simple in structure, can change according to technological requirement the speed of exhaust of vacuum pump, and the ultimate vacuum of synchronous change vacuum pump, integrate single-stage vacuum pump and two-stage vacuum pump, select flexibly mode of operation according to technological requirement, energy efficiency.
As preferably, described combination brake switch and proporting comprises the blind pipe being horizontally set with between the second suction port and first row gas port, the opening end of blind pipe is towards the second suction port, first row gas port vertically runs through blind pipe, the second suction port is connected with blind pipe, in blind pipe between the second suction port and first row gas port, be provided with the first blocking-up valve, on the opening end of blind pipe, be provided with the second blocking-up valve.Blind pipe is horizontally set with between the second suction port and first row gas port, and at the opening end of the blind pipe towards the second air inlet side, the second blocking-up valve is set, the first blocking-up valve is set in the blind pipe between the second suction port and first row gas port, in the time that vacuum pump uses as single-stage pump, close the first blocking-up valve, open the second blocking-up valve, gas in vacuum system enters in receiving cavity corresponding to rotor both sides from the first suction port and the second suction port simultaneously, and discharges from first row gas port and second row gas port respectively after the effect lower compression of blade; In the time that vacuum pump uses as two-stage pump, open the first blocking-up valve, close the second blocking-up valve, receiving cavity corresponding to rotor both sides is connected, and the gas in vacuum system enters from the first suction port in the receiving cavity of respective side, after the effect lower compression of blade, in the first blocking-up valve enters the receiving cavity of opposite side, again compresses, discharge finally by second row gas port, combination brake switch and proporting is simple in structure, by controlling manually or automatically the switch of blocking-up valve, simple to operation.
As preferably, on described rotor, be provided with radially groove, two blades that are being slidably connected in groove radially, and between two blades, be provided with blade holddown spring.The blade being slidably connected in groove is radially connected on the inner ring surface of pump housing receiving cavity in the effect lower slider of centrifugal force, thereby the receiving cavity of separating respective side forms two independently airtight cavities, synchronous rotary under the drive of rotor, pressurized air is also discharged, by be provided with blade holddown spring between two blades, increase the impacting force of the inner ring surface of blade to corresponding receiving cavity, improve the sealing of independent closed cavity.
As preferably, the cross section ovalize of described pump housing receiving cavity, rotor coaxial is rotatably connected in receiving cavity.When the cross section ovalize of pump housing receiving cavity, two of left and right receiving cavity size and shape are identical, are beneficial to the smooth operation of rotor and blade, improve vacuum pump reliability of operation.
As preferably, on described first row gas port and second row gas port, be covered with exhaust valve plate.Exhaust valve plate, for the sealing of relief opening, prevents gas backflow.
Therefore, composite vacuum pump pump chamber structure of the present utility model has following advantage: the switching by combined valve coordinates, can change the speed of exhaust of vacuum pump, also changed the limiting vacuum of vacuum pump simultaneously, when vacuum system is during in low vacuum state, the working state of vacuum pump in large pumping speed, when vacuum system is during in high vacuum state, the working state of vacuum pump in low pumping speed, high limit vacuum, be applicable to the exhaust body medium of relative broad range, simple in structure, easy to use, be a kind of energy-efficient vacuum pump.
brief description of the drawings:
Fig. 1 is the structural representation of the utility model composite vacuum pump pump chamber structure.
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 composite vacuum pump pump chamber structure of the present utility model, comprise the pump housing 1, the cross section ovalize of the pump housing 1 receiving cavity, in the pump housing 1 receiving cavity, coaxial rotation is connecting columniform rotor 2, on rotor 2, have a radially groove 13, two blades 3 are radially being slidably connected again in groove 13 radially, the medial extremity of two blades 3 is relatively positioned at radially groove 13 and between the medial extremity of two blades 3, is laterally connecting two blade holddown springs 14, the outboard end of two blades 3 stretches out and seals on the internal face that is against the pump housing 1 receiving cavity and keep airtight and is slidably connected, rotor 2 is tangent with the internal face up and down of the pump housing 1 receiving cavity again simultaneously, axial tangent line 4 in the tangent formation of upper internal face of rotor 2 and the pump housing 1 receiving cavity, axial tangent line 5 under the tangent formation of lower internal face of rotor 2 and the pump housing 1 receiving cavity, near on axially the pump housing 1 right side of tangent line 4 have the first suction port 6, near on axially the pump housing 1 left side of tangent line 4 have second row gas port 7, have the second suction port 8 in the pump housing 1 left side near lower axial tangent line 5, have first row gas port 9 on the pump housing 1 right side near lower axial tangent line 5, on first row gas port 9 and second row gas port 7, cover is being established exhaust valve plate 15 respectively, between the second suction port 8 of the pump housing 1 outside correspondence and first row gas port 9, be connected the combination brake switch and proporting that can change intake and exhaust flow path direction.Wherein combination brake switch and proporting comprises the blind pipe 10 being horizontally set with between the second suction port 8 and first row gas port 9 external port, the opening end level of blind pipe 10 is towards a side of the second suction port 8, the second suction port 8 and blind pipe 10 vertical connections, first row gas port 9 also vertically runs through blind pipe 10 after downward-extension, between the second suction port 8 and first row gas port 9, in corresponding blind pipe 10, the first blocking-up valve 11 is housed, the second blocking-up valve 12 is housed on the opening end of blind pipe 10.
When use, by the switch transition of the first blocking-up valve 11 and the second blocking-up valve 12, can realize single twin-stage function of vacuum pump, flexible and convenient to use.
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 amendments 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 (5)
1. a composite vacuum pump pump chamber structure, comprise the pump housing (1) and be rotatably connected on the rotor (2) in the pump housing (1) receiving cavity, on rotor (2), radially slide and connecting blade (3), blade (3) extends to the outer also envelope of rotor (2) and is against on the pump housing (1) receiving cavity internal face, it is characterized in that: the annular inner wall face of the described pump housing (1) receiving cavity is curved, rotor (2) be rotatably connected in receiving cavity and with the tangent rear formation of internal face of receiving cavity on axial tangent line (4) and lower axial tangent line (5), near on axially the pump housing (1) both sides of tangent line (4) be provided with the first suction port (6) and second row gas port (7), be provided with the second suction port (8) and first row gas port (9) in the pump housing (1) both sides near lower axial tangent line (5), and be provided with the combination brake switch and proporting that can change intake and exhaust flow path direction between the second suction port (8) and first row gas port (9).
2. composite vacuum pump pump chamber structure according to claim 1, it is characterized in that: described combination brake switch and proporting comprises the blind pipe (10) being horizontally set with between the second suction port (8) and first row gas port (9), the opening end of blind pipe (10) is towards the second suction port (8), first row gas port (9) vertically runs through blind pipe (10), the second suction port (8) is connected with blind pipe (10), in blind pipe (10) between the second suction port (8) and first row gas port (9), be provided with the first blocking-up valve (11), on the opening end of blind pipe (10), be provided with the second blocking-up valve (12).
3. composite vacuum pump pump chamber structure according to claim 1 and 2, it is characterized in that: on described rotor (2), be provided with radially groove (13), two blades (3) that are being slidably connected in groove (13) radially, and between two blades (3), be provided with blade holddown spring (14).
4. composite vacuum pump pump chamber structure according to claim 1 and 2, is characterized in that: the cross section ovalize of the described pump housing (1) receiving cavity, rotor (2) coaxial rotation is connected in receiving cavity.
5. composite vacuum pump pump chamber structure according to claim 1 and 2, is characterized in that: on described first row gas port (9) and second row gas port (7), be covered with exhaust valve plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068684.4U CN203730319U (en) | 2014-02-18 | 2014-02-18 | Composite vacuum pump chamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068684.4U CN203730319U (en) | 2014-02-18 | 2014-02-18 | Composite vacuum pump chamber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730319U true CN203730319U (en) | 2014-07-23 |
Family
ID=51200398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068684.4U Expired - Lifetime CN203730319U (en) | 2014-02-18 | 2014-02-18 | Composite vacuum pump chamber structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982429A (en) * | 2014-02-18 | 2014-08-13 | 浙江飞越机电有限公司 | Combined vacuum pump chamber structure and application method for vacuum pump with same |
-
2014
- 2014-02-18 CN CN201420068684.4U patent/CN203730319U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982429A (en) * | 2014-02-18 | 2014-08-13 | 浙江飞越机电有限公司 | Combined vacuum pump chamber structure and application method for vacuum pump with same |
| CN103982429B (en) * | 2014-02-18 | 2016-02-17 | 浙江飞越机电有限公司 | Composite vacuum pump pump chamber structure and the vacuum pump using method with this pump chamber structure |
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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: 20140723 |
|
| CX01 | Expiry of patent term |