CN102141043A - Minitype vacuum hydraulic pump - Google Patents
Minitype vacuum hydraulic pump Download PDFInfo
- Publication number
- CN102141043A CN102141043A CN2011100995073A CN201110099507A CN102141043A CN 102141043 A CN102141043 A CN 102141043A CN 2011100995073 A CN2011100995073 A CN 2011100995073A CN 201110099507 A CN201110099507 A CN 201110099507A CN 102141043 A CN102141043 A CN 102141043A
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- CN
- China
- Prior art keywords
- liquid
- chamber
- pump
- pressure
- housing
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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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/18—Centrifugal pumps characterised by use of centrifugal force of liquids entrained in pumps
Abstract
The invention discloses a minitype vacuum hydraulic pump which comprises a shell, an end cover, a flow guiding liquid input tube, a flow guiding liquid output tube, an impellor, a motor rotor, motor coils and a shaft sleeve, wherein the end cover is sealed at one end of the shell; the impellor is installed on a rotary shaft of the motor rotor; the motor rotor and the shaft sleeve are fixed in the shell after assembling and rotate through the driving of the motor coil; the motor coils are divided into a plurality of groups; the shell is provided with seal cavities which are used for arranging a plurality of motor coils; the shell is also provided with a seal pump liquid chamber and a secondary slow pressure chamber internally; the secondary slow pressure chamber is communicated with the pump liquid chamber; after the liquid is introduced from the flow guiding liquid output tube by the rotation of the impellor on the rotary shaft of the motor rotor, the liquid is exhausted from the pump liquid chamber, the secondary slow pressure chamber and the flow guiding liquid output tube; and the flow guiding liquid input tube and the flow guiding liquid output tube are respectively provided with a pipeline seal device which prevents the liquid in the pump liquid chamber and the secondary slow pressure chamber from leaking when the vacuum hydraulic pump is shut down.
Description
Technical field
The present invention relates to the minisize liquid suction booster, in particular, relate to a kind of special use in refrigeration technology field, the miniature vacuum oil hydraulic pump under high vacuum condition.
Background technique
Oil hydraulic pump of a great variety, can be divided into by working principle: (1) driving type pump, be wheeled pump or vane pump again, it relies on the dynamic action of the blade of rotation to liquid, energy continuous send liquid to, kinetic energy and the pressure of liquid under normal temperature, normal atmospheric pressure can be increased, convert kinetic energy to the pressure energy by delivery chamber subsequently; (2) positive displacement pump, it relies on the cycle of the seal operation spatial volume that contains liquid to change, and periodic power is sent to liquid, and the pressure of liquid is increased, and then liquid is discharged by force.
Wherein the more of usefulness is positive displacement pump, and volume-type hydraulic pump is that the variation by sealed volume realizes oil suction and presses oil, and the size of its oil drain quantity depends on the volume-variation of Seal cage, but needs two necessary conditions positive displacement pump work the time:
1, rhythmic sealed volume changes, and oil is pressed in oil suction when sealed volume is changed from small to big in the time of from large to small;
2, liquid dispensing device is arranged, be used to guarantee only is communicated with pick-up tube when sealed volume is changed from small to big, sealed volume is communicated with the hydraulic fluid pipe from large to small the time.
At present all oil hydraulic pumps all can only be under normal temperature, normal atmospheric situation, can normal suction liquid workings, in case under vacuum condition, because weightless cause and normal suction liquid working.And traditional driving type pump needs high rotational speed to drive usually, in the normal atmosphere (An) condition, be not suitable for the work under the super negative-pressure vacuum environment, in case under super negative pressure operating conditions, will produce idle running and not suction liquid, this is because lost pressure reduction and the cause of weightless power in the working environment, and the traditional type oil hydraulic pump can not be worked under liquid state under the forceful electric power operating voltage for a long time at present.
Summary of the invention
Advantage of the present invention provides a kind of slow supercharging, acidproof, wear-resisting, withstand voltage, high miniature vacuum oil hydraulic pump that insulate of pressing that have under high vacuum condition, it can at the uniform velocity supercharging under the limiting vacuum condition, anticorrosion, durable, low noise, guarantee working state safety, effectively under condition of negative pressure, liquid is transmitted with constant pressure.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of miniature vacuum oil hydraulic pump, comprise housing, end cap, water conservancy diversion liquid input tube, water conservancy diversion liquid output pipe, impeller, rotor, motor coil and axle sleeve, described end bracket enclosed is in an end of housing, impeller is installed in the rotating shaft of rotor, is fixed in the housing and by motor coil after rotor and the axle sleeve assembling and drives rotation; Motor coil is divided into many groups, is provided with a plurality of seal chambers that are used to arrange many group motor coils in housing; Also be provided with the pump liquid chamber and the peaceful pressure of the secondary chamber of sealing in housing, secondary is pacified and is pressed the chamber to be communicated with the pump liquid chamber, and the wheel rotation on the motor rotor shaft is introduced liquid after pump liquid chamber, secondary peaceful pressure chamber and water conservancy diversion liquid output pipe are discharged from the water conservancy diversion liquid input tube; In water conservancy diversion liquid input tube and water conservancy diversion liquid output pipe, be respectively equipped with and prevent pump liquid chamber and the peaceful duct sealing device of pressing indoor leak of liquid of secondary when shutting down.
Described duct sealing device comprises stationary axle, the axle sleeve that can slide in pipeline, find time spring and seal plate, seal plate is fixed on the stationary axle end and is installed in the ladder mouth outside of pipeline, and the described axle sleeve and the spring of finding time are installed on the stationary axle and are positioned at the inboard of the ladder mouth of pipeline.
Described end cap side is provided with and is used for canned pump liquid chamber and the peaceful preceding pressure-resistant seal lid of pressing the chamber of secondary, the corresponding shell rear side is provided with the back pressure-resistant seal lid to the rotor sealing, also is provided with canned pump liquid chamber, the peaceful heat resisting and pressure resisting of chamber, motor coil sealing of pressing of secondary are solidified glue in housing.
Described housing rear side also is provided with pressure compensation opening.
The rotating shaft of described rotor adopts high-temperature wearable porcelain axle to make.
Described impeller adopts stainless steel HB-304A to make.
Pressure-resistant seal covers and is provided with the air-flow dividing potential drop hole that connects with described pump liquid chamber before described
The invention has the beneficial effects as follows:
The present invention adopts slow mode of pressing chamber balance pressure reduction, by peaceful chamber and the duct sealing device of pressing of secondary, the suction/exhousting hole of water conservancy diversion liquid input tube and water conservancy diversion liquid output pipe is sealed and the slow pressure of formation branch automatically, after vacuum is compressed into saturation state in each cavity, start this pump, the ever-increasing while of pumping pressure, make the liquid one-way flow after the seal plate unlatching with the duct sealing device, open ducted backflow sheet then, whole liquid closed system is formed circulate.Pressure is indoor when out of service because secondary is pacified, produce liquid operation inertia, under its effect, make the water conservancy diversion liquid input tube liquid entering hole and and the seal plate auto-closing of the liquid outlet of water conservancy diversion liquid output pipe, therefore secondary pacify press indoor formation than the chamber outside the state of high pressure.Instantly during one-shot, when the impeller middling speed is moved, produce high pressure after, opened the seal plate of liquid inlet and outlet again, make whole hydraulic system recover good operation, so just formed the low high pumping hole that extrudes of pumping hole of compressing into.
Because the motor coil of high pressure 220V voltage is to be in the cavity of a high sealing fully, promptly to solidify glue motor coil is sealed in the housing by heat resisting and pressure resisting, its insulation class has superpower insulation class between 100M Ω-150M Ω.Also be provided with pressure compensation opening at the housing rear side, like this, after the interior heat resisting and pressure resisting of heat radiation dependence cavity of motor coil solidifies glue (interlayer medium) exchange heat energy, rely on the flow of fluid in the sap cavities such as pump liquid chamber, the peaceful pressure of secondary chamber that heat energy is taken away, reach effective heat radiation.
In addition, the rotating shaft of rotor is to fire through superhigh temperature with higfh-tension ceramics to form, and has superpower wear-and corrosion-resistant performance, and impeller adopts the steel of stainless steel HB-304A to make, and dynamic inertia is strong, corrosion resistant, wear resistance height.
Description of drawings
Fig. 1 is a sectional structure schematic representation of the present invention.
Embodiment
As shown in Figure 1, a kind of miniature vacuum oil hydraulic pump, comprise housing 1, end cap 2, water conservancy diversion liquid input tube 3, water conservancy diversion liquid output pipe 4, impeller 5, rotor 6, motor coil 7 and axle sleeve 8, described end cap 2 is sealed in an end of housing 1, impeller 5 is installed in the rotating shaft 60 of rotor 6, is fixed in the housing 1 and by motor coil 7 after rotor 6 assembles with axle sleeve 8 and drives rotation; Motor coil 7 is divided into first group of coil 70 and second group of coil 71, is provided with two seal chambers that are used to arrange first group of coil 70 and second group of coil 71 in housing 1; In housing 1, also be provided with the pump liquid chamber 10 and the peaceful chamber 11 of pressing of secondary of sealing, the peaceful chamber 11 of pressing of secondary is communicated with pump liquid chamber 10, and impeller 5 work in rotor 6 rotating shafts 60 are introduced liquid after pump liquid chamber 10, secondary peaceful pressure chamber 11 and water conservancy diversion liquid output pipe 4 are discharged from water conservancy diversion liquid input tube 3; In water conservancy diversion liquid input tube 3 and water conservancy diversion liquid output pipe 4, be respectively equipped with and prevent pump liquid chamber 10 and the peaceful duct sealing device 9 of pressing the leak of liquid in the chamber 11 of secondary when shutting down; described duct sealing device 9 comprises stationary axle 90, the axle sleeve 91 that can slide in pipeline, find time spring 92 and seal plate 93; seal plate 93 is fixed on stationary axle 90 ends and is installed in the ladder mouth outside of pipeline, and the described axle sleeve 91 and the spring 92 of finding time are installed on the stationary axle 90 and are positioned at the inboard of the ladder mouth of pipeline.
Be provided with the preceding pressure-resistant seal lid 20 that is used for canned pump liquid chamber 10 and the peaceful pressure of secondary chamber 11 in end cap 2 sides, corresponding shell 1 rear side is provided with the back pressure-resistant seal lid 21 to rotor 6 sealings, also is provided with canned pump liquid chamber 10, the peaceful heat resisting and pressure resisting of chamber 11, motor coil 7 sealings of pressing of secondary are solidified glue 22 in housing 1; Pressure-resistant seal lid 20 is provided with the air-flow dividing potential drop hole 200 that connects with described pump liquid chamber 10 before described.Because the motor coil 7 of high pressure 220V voltage solidifies glue 22 by heat resisting and pressure resisting it being sealed in the housing 1, is to be in the cavity of a high sealing fully, and its insulation class has superpower insulation class between 100M Ω-150M Ω; And also be provided with pressure compensation opening 23 at housing 1 rear side, like this, heat resisting and pressure resisting curing glue 22(interlayer medium in the heat radiation dependence cavity of motor coil 7) behind the exchange heat energy, flow of fluid in dependence pump liquid chamber 10, secondary peaceful pressure chamber 11 and the pressure compensation opening 23 in the sap cavity is taken away heat energy, reaches effective heat radiation.
The rotating shaft 60 of rotor 6 simultaneously adopts high-temperature wearable porcelain axles to make, and has superpower wear-and corrosion-resistant performance, and impeller 5 adopts stainless steel HB-304A to make, and dynamic inertia is strong, corrosion resistant, wear resistance height.
During work, 220V power supply lead wire hole 12 interior power lines are switched on to motor coil 7 on the housing 1, impeller 5 work in rotor 6 rotating shafts 60, after vacuum is compressed into saturation state in each cavity, the ever-increasing while of pumping pressure, the seal plate 93 of duct sealing device 9 is opened, made the liquid one-way flow, liquid is introduced after air-flow dividing potential drop hole 200, pump liquid chamber 10, secondary peaceful pressure chamber 11 and water conservancy diversion liquid output pipe 4 are discharged from water conservancy diversion liquid input tube 3.Because secondary is pacified when pressing chamber 11 inherent these pumps out of service, liquid in it produces liquid operation inertia, under the operation effect of inertia, secondary pacify to press indoor formation than the chamber outside the state of high pressure, then by the duct sealing device, make water conservancy diversion liquid input tube 3 liquid entering hole and and seal plate 93 auto-closings of the liquid outlet of water conservancy diversion liquid output pipe 4, instantly during one-shot, after when impeller 5 middling speeds are moved, producing high pressure, opened again, the seal plate 93 of liquid outlet, make whole hydraulic system recover good operation, so just formed the low high pumping hole that extrudes of pumping hole of compressing into, make this pump under condition of negative pressure, liquid to be transmitted with constant pressure.
The above embodiment for preferred embodiment of the present invention, is not to limit practical range of the present invention with this just, and the equivalence that all shapes according to the present invention, structure and principle are done changes, and all should be covered by in protection scope of the present invention.
Claims (7)
1. miniature vacuum oil hydraulic pump, comprise housing, end cap, water conservancy diversion liquid input tube, water conservancy diversion liquid output pipe, impeller, rotor, motor coil and axle sleeve, described end bracket enclosed is in an end of housing, impeller is installed in the rotating shaft of rotor, is fixed in the housing and by motor coil after rotor and the axle sleeve assembling and drives rotation; It is characterized in that,
Motor coil is divided into many groups, is provided with a plurality of seal chambers that are used to arrange many group motor coils in housing;
Also be provided with the pump liquid chamber and the peaceful pressure of the secondary chamber of sealing in housing, secondary is pacified and is pressed the chamber to be communicated with the pump liquid chamber, and the impeller work on the motor rotor shaft is introduced liquid after pump liquid chamber, secondary peaceful pressure chamber and water conservancy diversion liquid output pipe are discharged from the water conservancy diversion liquid input tube;
In water conservancy diversion liquid input tube and water conservancy diversion liquid output pipe, be respectively equipped with and prevent pump liquid chamber and the peaceful duct sealing device of pressing indoor leak of liquid of secondary when shutting down.
2. according to the described miniature vacuum oil hydraulic pump of claim 1, it is characterized in that, described duct sealing device comprises stationary axle, the axle sleeve that can slide in pipeline, find time spring and seal plate, seal plate is fixed on the stationary axle end and is installed in the ladder mouth outside of pipeline, and the described axle sleeve and the spring of finding time are installed on the stationary axle and are positioned at the inboard of the ladder mouth of pipeline.
3. according to the described miniature vacuum oil hydraulic pump of claim 2, it is characterized in that, described end cap side is provided with and is used for canned pump liquid chamber and the peaceful preceding pressure-resistant seal lid of pressing the chamber of secondary, the corresponding shell rear side is provided with the back pressure-resistant seal lid to the rotor sealing, also is provided with canned pump liquid chamber, the peaceful heat resisting and pressure resisting of chamber, motor coil sealing of pressing of secondary are solidified glue in housing.
4. according to the described miniature vacuum oil hydraulic pump of claim 3, it is characterized in that described housing rear side also is provided with pressure compensation opening.
5. according to claim 1 or 4 described miniature vacuum oil hydraulic pumps, it is characterized in that the rotating shaft of described rotor adopts high-temperature wearable porcelain axle to make.
6. according to claim 1 or 4 described miniature vacuum oil hydraulic pumps, it is characterized in that described impeller adopts stainless steel HB-304A to make.
7. according to the described miniature vacuum oil hydraulic pump of claim 3, it is characterized in that described preceding pressure-resistant seal covers and is provided with the air-flow dividing potential drop hole that connects with described pump liquid chamber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100995073A CN102141043A (en) | 2011-04-20 | 2011-04-20 | Minitype vacuum hydraulic pump |
| PCT/CN2011/074252 WO2012142780A1 (en) | 2011-04-20 | 2011-05-18 | Minitype vacuum hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100995073A CN102141043A (en) | 2011-04-20 | 2011-04-20 | Minitype vacuum hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102141043A true CN102141043A (en) | 2011-08-03 |
Family
ID=44408776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100995073A Pending CN102141043A (en) | 2011-04-20 | 2011-04-20 | Minitype vacuum hydraulic pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102141043A (en) |
| WO (1) | WO2012142780A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179265A (en) * | 2015-09-11 | 2015-12-23 | 湖州周吴鼎盛化工有限公司 | Vacuum pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363097Y (en) * | 1999-01-07 | 2000-02-09 | 张坤 | Permanent miniature submerged pump |
| WO2005011087A1 (en) * | 2003-07-24 | 2005-02-03 | Tesma International Inc. | Electric fluid pump |
| JP2008008222A (en) * | 2006-06-29 | 2008-01-17 | Nidec Sankyo Corp | Pump device |
| DE102007016255B4 (en) * | 2006-04-28 | 2012-11-29 | Bühler Motor GmbH | rotary pump |
| CN101732769B (en) * | 2010-01-26 | 2011-10-05 | 浙江大学 | Implantable blood pump adopting driven suspension bearing |
| CN201953674U (en) * | 2011-04-20 | 2011-08-31 | 惠州市新力达制冷技术有限公司 | Micro vacuum hydraulic pump |
-
2011
- 2011-04-20 CN CN2011100995073A patent/CN102141043A/en active Pending
- 2011-05-18 WO PCT/CN2011/074252 patent/WO2012142780A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179265A (en) * | 2015-09-11 | 2015-12-23 | 湖州周吴鼎盛化工有限公司 | Vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012142780A1 (en) | 2012-10-26 |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110803 |