CN1143719A - Method for pumping high-vacuum degree - Google Patents
Method for pumping high-vacuum degree Download PDFInfo
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- CN1143719A CN1143719A CN 96107164 CN96107164A CN1143719A CN 1143719 A CN1143719 A CN 1143719A CN 96107164 CN96107164 CN 96107164 CN 96107164 A CN96107164 A CN 96107164A CN 1143719 A CN1143719 A CN 1143719A
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- liquid medium
- impeller
- pump housing
- relief opening
- intakeport
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A method to evacuate high vacuum degrees until absolute pressure uses a special apparatus, which has a rotor with blade wheel and eccentrically installed in circular inner cavity of a cylinder. The two ends of inner cavity is communicated with liquid medium container with connecting end cover. When blade wheel rotates at high speed, liquid medium is close to wall of the inner cavity to form a ring and a meniscus space is formed between the inner circular surface of the ring and the outer circumference of blade wheel hub. Air inlet and outlet openings are made respectively at origin and terminal of the meniscus space. Its advantages include high efficiency, long service life and no direct abrasion.
Description
The present invention relates to the equipment and the method for condition of high vacuum degree, a kind of specifically with no stuffing box packing, no inlet and outlet valve, do not have directly wearing and tearing, long lifetime, high efficiency method for the pumping high-vacuum degree of its characteristics.
In national economy field and scientific experiment, obtain condition of high vacuum degree and generally use vacuum pump, vacuum pump is the essential equipment of a kind of vacuum environment of purchasing, existing vacuum pump design has reciprocating type and rotary type, operated by rotary motion has air intake valve, its sealing relies on seal ring or stuffing box packing, its efficient and producible degree of vacuum are subjected to poorly sealed, valve does not sternly wait and causes gas to come and go, the influence of seepage and harmful air chamber can not be satisfied high efficiency, the needs of condition of high vacuum degree, here harmful air chamber of saying is to retain the space that can not discharge and return gas in the pump drainage gas process, in the prior art, vacuum equipment simple in structure is owing to leaking the requirement that does not reach condition of high vacuum degree, the vacuum equipment that can reach condition of high vacuum degree is then because complex structure, manufacture difficulty requires high and costs an arm and a leg, and reduce working life, and also be difficult to reach the requirement of absolute pressure because of there being direct wearing and tearing to influence.
The method that the purpose of this invention is to provide a kind of pumping high-vacuum degree, have no air intake valve, do not have directly wear and tear, the characteristics of no stuffing box packing, can realize the vacuum requirement of condition of high vacuum degree up to absolute pressure, and high efficiency, long lifetime, simple structure, be easy to promote, of many uses.
The object of the present invention is achieved like this:
A kind of method of pumping high-vacuum degree comprises
A. an isolated plant, this device have a rotor that impeller blade is installed, and this rotor is installed in the round cavity of a cylinder body prejudicially with rotating shaft;
B. the inner chamber of cylinder block two ends are communicated with the container that is connected end cap that liquid medium is housed, and liquid medium enters inner chamber of cylinder block;
C. impeller high speed rotating, the rotation of promotion liquid medium, under centrifugal action, the recline circular hole wall of inner chamber of cylinder block of liquid medium is formed with certain thickness liquid medium annulus, forms a half moon-shaped space between the wheel hub periphery of the inner ring surface of this annulus and impeller;
D. according to the impeller sense of rotation, sharp corner in crescent space starting point is provided with an intakeport, sharp corner in crescent space clearing end is provided with a relief opening, the wedge angle that rises all the time with clearing end in the shape of described intakeport and relief opening and position and crescent space overlaps, described intakeport connection is evacuated container, liquid medium in the described relief opening connection container, and by the logical atmosphere of last apical grafting;
E. pumping process carries out continuously.
This by main shaft, impeller, the pump housing, the totally enclosed type that parts such as flowing medium container and main shaft are formed.Long lifetime, high efficiency, condition of high vacuum degree (absolute pressure) vacuum equipment, be characterized in that the impeller that links to each other with main shaft rotates under the drive of main shaft, flowing medium in the pump housing rotates in the pump housing under action of centrifugal force, owing to the off-centre of the impeller and the pump housing forms certain thickness flowing medium ring, form crescent space between flowing medium ring and the impeller hub, wheel hub contacts with the flowing medium ring and forms separating of high low pressure chamber, the process that air chamber between impeller and the flowing medium ring changes from small to big is a breathing process, process from large to small is an exhaust process, the seepage of the gas that causes for the gap of eliminating main shaft and end cap impeller end face, end cap can be a flowing medium case outward, the object that makes seepage is a flowing medium, the flowing medium of seepage forms the sealing that film improves impeller and end face on the cylinder body end face, the flowing medium of seepage is discharged cylinder body from relief opening in compression process.
The present invention has following actively useful effect:
1. can realize condition of high vacuum degree:
Utilize blade, change from small to big in space between wheel hub and the flowing medium ring, process is from large to small bled and exhaust again, main shaft and end cap, be friction-free Spielpassung between the blade and the pump housing, between the high low pressure chamber that cause in all gaps, effusion between axle and the end cap is not a gas, but the flowing medium in the two end cap flowing medium case and infilter the flowing medium film that the flowing medium of the pump housing forms at the end cap internal surface by main bearing, get rid of gas and returned the problem that leaps up, thereby need not be provided with into, drain tap can be realized condition of high vacuum degree, reaches the vacuum of absolute pressure.
2. do not have harmful air chamber, pumping process of the present invention is continuous, and the original volume of bleeding is zero, unharmful air chamber, thus help improving the limit of finding time.
3. all seepages of work air chamber are flowing medium, have prevented that returning of gas from leaping up.
4. do not have directly wearing and tearing: the pump housing and main shaft need not stuffing box packing, all do not have friction between the pump housing and blade, have reduced power consumption.
5. liquid medium can be selected different liquid as required for use, Ru Shui, oil, and other evaporates less or does not have evaporated liquid or the good liquid of greasy property.
6. simple structure, manufacture cost is relatively low, is convenient to promote, and has bigger social benefit and economic benefit.
7. of many uses, can be widely used in various needs, as oil, chemical industry, pharmacy, food, military project, scientific experimentation etc. to degree of vacuum.
Now in conjunction with the accompanying drawings with preferred embodiment
Fig. 1 is the organigram of the embodiment of the invention
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is Fig. 1 embodiment's a outline drawing.
Accompanying drawing number is:
1-main shaft 7-intakeport
2-impeller 8-relief opening
3-impeller hub 9-main shaft sense of rotation
4-pump housing 10-flowing medium ring
5-end cap flowing medium case 11-connects the sucking pipe that is evacuated container
6-bearing 12-leads to the air discharge tube of atmosphere
The method of pumping high-vacuum degree of the present invention, available a kind of embodiment shown in Figure 1 realize that device shown in Figure 1 is a kind of liquid medium totally enclosed type condition of high vacuum degree vacuum pump, and its structure comprises the impeller and the pump housing.
A. being installed in impeller hub (3) on the main shaft (1) and impeller (2) is parallel to each other by bearings at both ends (6) supporting spindle (1) center line and the pump housing (4) center line and a throw of eccentric is arranged.
B., one end cap liquid medium case is respectively arranged at the axial two ends of the pump housing, one air-breathing (7) and a relief opening (8) are respectively arranged on two end cap planes that this medium box is connected with the pump housing, and each coincides the shape of this intakeport (7) and relief opening (8) and position with two pointed shape in a crescent space; This crescent space is formed by the inner ring surface of liquid medium ring (10) and the periphery profile of impeller hub (3), described liquid medium ring (10) is the liquid medium rotation that drives when impeller (2) high speed rotating in the pump housing (4), under centrifugal action and naturally the liquid medium annulus of being close to the pump housing (4) internal circular surfaces concentric with the pump housing (4) of formation.According to the blade rotation direction, described intakeport (7) is arranged at the starting point in crescent space, this intakeport connects sucking pipe (11), liquid medium in this sucking pipe and the liquid medium case is isolated, end face pass-out from end cap liquid medium case is connected in the container that is evacuated, and described relief opening (8) is arranged at the clearing end in crescent space, fluid connection in this relief opening and the liquid medium case, air discharge tube (12) are drawn with atmosphere by liquid medium case (5) upper end and are communicated.
During enforcement, described liquid medium can be the fluid of water, oil and other non-pneumatics.
In Fig. 1, pump housing sidewall between main shaft (1) and the end cap flowing medium case (5) is a Spielpassung, in sectional view, (7) be intakeport on the end cap flowing medium case (5), (8) be relief opening on the end cap flowing medium case, the main shaft sense of rotation is shown in arrow (9), (10) be the flowing medium ring, working procedure of the present invention is achieved in that the eccentric main shaft of installing (1) is pressed the rotation of direction shown in the arrow (9) in the pump housing (4), drive the flowing medium rotation in the pump housing (4), under action of centrifugal force, form flowing medium ring (10), form a crescent space between the internal surface of flowing medium ring (10) and impeller hub (3) gabarit, the space that surrounds from flowing medium ring (10) and impeller hub (3) increases gradually, gas sucks from intakeport (7), this process is a breathing process, impeller is rotated further after the space increases to maximum value, the space that two blades and flowing medium ring (10) and impeller hub (3) surround dwindles gradually, air will be discharged from relief opening (8), be compressed into zero until this space, all air are discharged from, this process is an exhaust process, all seepages are as: impeller (2) seepage with end cap flowing medium case (5) surface of contact, seepage between the axis hole on main shaft (1) and the end cap (5) is flowing medium, in compression process, will all discharge all air and unnecessary flowing medium, enter breathing process with zero volume then, continuous rotation forms continuous suction, air is sucked the back from intakeport discharge from relief opening.
On the basis of above-mentioned working principle, can carry out deformation design adapting to different requirements, as:
(1) can water according to the flowing medium in the need of work pump housing or other medium such as oils or other not volatile, the liquid that produces chemical reaction with the gas that is aspirated substitutes, and to change lubricating status, increases Applicable scope, deepens degree of vacuum.
(2) change main shaft (1), impeller (2), impeller hub (3), the pump housing (4), the material of end cap flowing medium case parts such as (5) can adapt to different working mediums and working environment, as the suction corrosive gas, is operated in corrosive atmosphere etc.
By above-mentioned deformation design method as can be seen the present invention very wide applicability is arranged.
During enforcement, can adopt not volatile liquid, eliminate because the influence of the right degree of vacuum that evaporates is made and is applicable to the vacuum pump that requires condition of high vacuum degree.
During enforcement, can adopt stainless steel or other alloy, the vacuum pump of composite manufacturing can satisfy working medium, and working environment requires the difference of vacuum pump as acidproof, alkaline-resisting, high temperature etc.
Claims (3)
1. the method for a pumping high-vacuum degree, it is characterized in that: described method comprises
A. an isolated plant, this device have a rotor that impeller blade is installed, and this rotor is installed in the round cavity of a cylinder body prejudicially with rotating shaft;
B. the inner chamber of cylinder block two ends are communicated with the container that is connected end cap that liquid medium is housed, and liquid medium enters inner chamber of cylinder block;
C. impeller high speed rotating, the rotation of promotion liquid medium, under centrifugal action, the recline circular hole wall of inner chamber of cylinder block of liquid medium is formed with certain thickness liquid medium annulus, forms a half moon-shaped space between the wheel hub periphery of the inner ring surface of this annulus and impeller;
D. according to the impeller sense of rotation, sharp corner in crescent space starting point is provided with an intakeport, sharp corner in crescent space clearing end is provided with a relief opening, the wedge angle that rises all the time with clearing end in the shape of described intakeport and relief opening and position and crescent space overlaps, described intakeport connection is evacuated container, liquid medium in the described relief opening connection container, and by the logical atmosphere of last apical grafting;
E. pumping process carries out continuously.
2. the method for pumping high-vacuum degree as claimed in claim 1, it is characterized in that: described device is a kind of liquid medium totally enclosed type condition of high vacuum degree vacuum pump, and its structure comprises the impeller and the pump housing, it is characterized in that:
A. the impeller hub (3) and the impeller (2) that are installed on the main shaft (1) are supported by bearings at both ends (6), and main shaft (1) center line and the pump housing (4) center line are parallel to each other and a throw of eccentric is arranged;
B., one end cap liquid medium case is respectively arranged at the axial two ends of the pump housing, one air-breathing (7) and a relief opening (8) are respectively arranged on two end cap planes that this medium box is connected with the pump housing, and each coincides the shape of this intakeport (7) and relief opening (8) and position with two pointed shape in a crescent space; This crescent space is formed by the inner ring surface of liquid medium ring (10) and the periphery profile of impeller hub (3), described liquid medium ring (10) is the liquid medium rotation that drives when impeller (2) high speed rotating in the pump housing (4), and under centrifugal action and naturally formation is concentric and be close to the pump housing (4) internal circular surfaces certain thickness liquid medium annulus is arranged with the pump housing (4).According to the blade rotation direction, described intakeport (7) is arranged at the starting point in crescent space, this intakeport connects sucking pipe (11), liquid medium in this sucking pipe and the liquid medium case is isolated, end face pass-out from end cap liquid medium case is connected in the container that is evacuated, and described relief opening (8) is arranged at the clearing end in crescent space, fluid connection in this relief opening and the liquid medium case, air discharge tube (12) are drawn with atmosphere by liquid medium case (5) upper end and are communicated.
3. the method for pumping high-vacuum degree as claimed in claim 1, it is characterized in that: described liquid medium can be the fluid of water, oil and other non-pneumatics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107164A CN1061131C (en) | 1996-07-17 | 1996-07-17 | Method for pumping high-vacuum degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107164A CN1061131C (en) | 1996-07-17 | 1996-07-17 | Method for pumping high-vacuum degree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1143719A true CN1143719A (en) | 1997-02-26 |
| CN1061131C CN1061131C (en) | 2001-01-24 |
Family
ID=5119551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96107164A Expired - Fee Related CN1061131C (en) | 1996-07-17 | 1996-07-17 | Method for pumping high-vacuum degree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061131C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628446A (en) * | 2011-02-02 | 2012-08-08 | 福特环球技术公司 | Centrifugal vacuum pump and method for generating negative pressure |
| CN105756961A (en) * | 2014-12-16 | 2016-07-13 | 镇江润京机电科技有限公司 | Novel vacuum pump device based on water ring effect |
| CN106705280A (en) * | 2017-03-06 | 2017-05-24 | 天津商业大学 | Salt solution regenerator in superheavy vacuum state |
| CN115180016A (en) * | 2021-04-06 | 2022-10-14 | 上海汽车集团股份有限公司 | Automatic locking means of rear wheel, automatic locking system of rear wheel and vehicle |
| CN116006480A (en) * | 2023-03-31 | 2023-04-25 | 江西联陆生物科技有限公司 | Glass fiber reinforced plastic vacuum pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU423940A1 (en) * | 1972-11-09 | 1974-04-15 | И. А. Райзман, А. И. Рудаков , Э. Б. Мац Казанский химико технологический институт С. М. Кирова | LIQUID-RING VACUUM PUMP |
| CN1006179B (en) * | 1985-06-11 | 1989-12-20 | 普雷斯坎特有限公司 | Pump |
| CN2054849U (en) * | 1989-09-16 | 1990-03-21 | 浙江真空设备厂 | Noise control of double-stage liquid circulating vaccum-pump |
| SE502127C2 (en) * | 1993-12-01 | 1995-08-28 | Kvaerner Pulping Tech | Device at a vacuum pump for venting the suspension pump |
-
1996
- 1996-07-17 CN CN96107164A patent/CN1061131C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628446A (en) * | 2011-02-02 | 2012-08-08 | 福特环球技术公司 | Centrifugal vacuum pump and method for generating negative pressure |
| CN102628446B (en) * | 2011-02-02 | 2017-03-01 | 福特环球技术公司 | Centrifugal vacuum pump and the method for producing negative pressure |
| CN105756961A (en) * | 2014-12-16 | 2016-07-13 | 镇江润京机电科技有限公司 | Novel vacuum pump device based on water ring effect |
| CN106705280A (en) * | 2017-03-06 | 2017-05-24 | 天津商业大学 | Salt solution regenerator in superheavy vacuum state |
| CN106705280B (en) * | 2017-03-06 | 2022-07-08 | 天津商业大学 | Saline solution regenerator under overweight vacuum state |
| CN115180016A (en) * | 2021-04-06 | 2022-10-14 | 上海汽车集团股份有限公司 | Automatic locking means of rear wheel, automatic locking system of rear wheel and vehicle |
| CN115180016B (en) * | 2021-04-06 | 2024-01-12 | 上海汽车集团股份有限公司 | Automatic locking device of rear wheel, automatic locking system of rear wheel and vehicle |
| CN116006480A (en) * | 2023-03-31 | 2023-04-25 | 江西联陆生物科技有限公司 | Glass fiber reinforced plastic vacuum pump |
| CN116006480B (en) * | 2023-03-31 | 2023-10-17 | 江西联陆生物科技有限公司 | Glass fiber reinforced plastic vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1061131C (en) | 2001-01-24 |
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