CN108825860B - Automatic accumulated water release device for vacuum pump oil tank - Google Patents
Automatic accumulated water release device for vacuum pump oil tank Download PDFInfo
- Publication number
- CN108825860B CN108825860B CN201810964958.0A CN201810964958A CN108825860B CN 108825860 B CN108825860 B CN 108825860B CN 201810964958 A CN201810964958 A CN 201810964958A CN 108825860 B CN108825860 B CN 108825860B
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- float
- cavity
- drain hole
- Prior art date
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000003921 oil Substances 0.000 claims abstract description 79
- 239000010687 lubricating oil Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000000474 nursing effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N19/00—Lubricant containers for use in lubricators or lubrication systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a vacuum pump oil tank is with ponding automatic release device, vacuum pump oil tank includes the oil tank body, establishes lubricating oil in its die cavity, and the below of lubricating oil is ponding, establishes oil return hole and oil drain hole on the oil tank body, characteristics: the automatic ponding releasing device comprises an additional cavity, wherein the additional cavity is arranged beside the oil tank body and is positioned at one side of the oil drain hole, the oil inlet is formed in one side wall of the additional cavity and is communicated with the oil drain hole, the middle of the additional cavity is a water storage cavity, the bottom of the additional cavity is provided with the water drain hole, a float is arranged in the water storage cavity and is limited at the bottom of the additional cavity through a positioning screw and can float up and down, when no ponding exists in the water storage cavity, the float seals the water drain hole, when ponding exists at the lower part of the water storage cavity, the float floats upwards to open the water drain hole, the ponding is discharged out of the water storage cavity, the density of liquid contacting the float is reduced along with the reduction of the water level, and the float is gradually reduced and seals the water drain hole. Adverse effects of water on the vacuum pump are avoided, the lubricating performance of the pump head is ensured, and the cost is saved.
Description
Technical Field
The invention belongs to the technical field of vacuum pumps, and particularly relates to an automatic accumulated water releasing device for a vacuum pump oil tank.
Background
The typical structure of the oil tank is disclosed by fig. 1, and comprises an oil tank body 1, lubricating oil 2 is arranged in a hollow cavity of the oil tank body 1, an oil return hole 11 and an oil drain hole 12 are formed in the oil tank body 1, an oil drain bolt or valve 7 is arranged in the oil drain hole 12, the lubricating oil 2 returns to a pump head through the oil return hole 11 to continuously participate in working, and discharged oil gas returns to the surface of a lubricating oil liquid level 21, so that the lubricating oil liquid level 21 achieves dynamic balance. When maintenance is needed, the drain plug or valve 7 is opened, so that the lubricating oil can be replaced conveniently.
The defects of the structure are that: once the vacuum pump has treated the water vapor exceeding the design bearing capacity, the moisture condenses into a liquid, which remains at the bottom of the tank body 1 after a period of time. As shown in fig. 2, when the accumulated water 3 remains in the lower portion of the cavity of the oil tank body 1, the lubricating oil 2 floats up due to small density, and as long as the oil-water interface 31 reaches the height position of the oil return hole 11, the accumulated water 3 can replace the lubricating oil 2 to be pumped back to the pump head to participate in lubrication, so that the lubrication working performance of the pump head is damaged, and serious consequences such as rusting of the pump body and the rotor, and cracking of the blades are caused. If the lubricant 2 is not replaced in time, the vacuum pump will soon fail.
In view of the above prior art, there is a need for a reasonable improvement over existing vacuum pump tank structures. To this end, the inventors have advantageously devised that the technical solutions described below are created in this context.
Disclosure of Invention
The invention aims to provide an automatic accumulated water release device for a vacuum pump oil tank, which can automatically discharge accumulated water in the vacuum pump oil tank outwards, so that adverse effects of moisture on a vacuum pump are effectively avoided, the lubrication working performance of a pump head is ensured, the lubricating oil is not required to be frequently replaced by manual nursing, and the labor cost is saved.
The invention discloses an automatic accumulated water release device for a vacuum pump oil tank, which comprises an oil tank body, wherein lubricating oil is arranged in a hollow cavity of the oil tank body, accumulated water is arranged below the lubricating oil, and an oil return hole and an oil drain hole are formed in the oil tank body, and is characterized in that: the automatic accumulated water release device comprises an additional cavity, wherein the additional cavity is arranged beside the oil tank body and is positioned at one side of the oil drain hole, a through hole is formed in one side wall of the additional cavity and is an oil inlet hole, the position of the oil inlet hole corresponds to that of the oil drain hole, the oil inlet hole and the oil outlet hole are mutually communicated, a hollow water storage cavity is formed in the middle of the additional cavity, a water drain hole is formed in the bottom of the additional cavity, a float is arranged in the water storage cavity and is positioned at the position of the water drain hole, the float is limited at the bottom of the additional cavity through a positioning screw and can float up and down, when no accumulated water exists in the water storage cavity, the water drain hole is sealed by the float, and when accumulated water exists at the lower part of the water storage cavity, the float floats upwards to open the water drain hole, so that the accumulated water is discharged out of the water storage cavity, the density of liquid contacting the float is reduced to the density of lubricating oil, and the float gradually descends and seals the water drain hole at the moment, and the water drain hole is sealed.
In a specific embodiment of the invention, the float has a density of between 0.93 and 0.95, the lubricating oil has a density of between 0.80 and 0.90, and the water has a density of 1.
In another specific embodiment of the present invention, the additional cavity and the oil tank body are connected by a fastener to form a solid or integrally manufactured.
In a further specific embodiment of the invention, the float is provided with a sealing gasket at the bottom or at the contact point with the additional cavity.
In yet another specific embodiment of the present invention, the sealing gasket is a rubber gasket.
In a further specific embodiment of the invention, the additional chamber is provided with a cover plate at the open end of the water storage chamber, said cover plate being used to ensure that the vacuum pump is free from leakage of gas and oil in the operating state.
After the structure is adopted, the invention has the beneficial effects that: by utilizing the density difference of lubricating oil and water, a small additional cavity is additionally arranged beside the oil tank body, the cavity comprises a water discharging hole formed in the bottom of the water storage cavity and a floater matched with the water discharging hole, wherein the density of the floater is between that of water and the lubricating oil, when the water is in the water storage cavity, the floater floats upwards to discharge accumulated water outwards, when no water or lubricating oil exists in the water storage cavity, the floater sinks and seals the water discharging hole, so that accumulated water below the lubricating oil can be discharged outwards automatically, adverse effects of water on a vacuum pump are effectively avoided, friction and abrasion are reduced, the lubricating performance of a pump head is ensured, the service life of the vacuum pump is prolonged, manual frequent nursing and lubricating oil replacement are not needed, and labor cost is saved.
Drawings
Fig. 1 is a plan sectional view of a vacuum pump tank in the prior art.
Fig. 2 is a plan sectional view of the prior art vacuum pump oil tank with accumulated water at the bottom.
Fig. 3 is a structural cross-sectional view of an embodiment of the present invention.
In the figure: 1. the oil tank body, 11, the oil return hole, 12, the oil drain hole; 2. lubricating oil, 21. Lubricating oil level; 3. ponding, 31. Oil-water interface; 4. the additional cavity body 41, the oil inlet hole 42, the water outlet hole 43, the water storage cavity 44 and the cover plate; 5. a set screw; 6. a float; 7. drain bolts or valves.
Detailed Description
The applicant will now make a detailed description by way of example, but the description of the examples is not intended to limit the scope of the invention, and any equivalents merely in form, rather than in nature, which are contemplated as falling within the scope of the invention.
Referring to fig. 1, the invention relates to an automatic accumulated water release device for a vacuum pump oil tank, the vacuum pump oil tank comprises an oil tank body 1, lubricating oil 2 is arranged in a hollow cavity of the oil tank body 1, accumulated water 3 is arranged below the lubricating oil 2, and an oil return hole 11 and an oil drain hole 12 are formed in the oil tank body 1. The characteristics are that: the automatic accumulated water release device comprises an additional cavity 4 which is arranged beside the oil tank body 1 and is positioned at one side of the oil drain hole 12, the additional cavity 4 and the oil tank body 1 are integrally manufactured by connecting solids through fasteners, a through hole which is an oil inlet hole 41 is formed in one side wall of the additional cavity 4, the position of the oil inlet hole 41 corresponds to that of the oil drain hole 12 and is communicated with the oil inlet hole, a water drain hole 42 is formed in the middle of the additional cavity 4, a float 6 is arranged in the water storage cavity 43 and positioned at the position of the water drain hole 42, the float 6 is limited at the bottom of the additional cavity 4 through a positioning screw 5 and can float up and down, the density of the float 6 is between 0.93 and 0.95, the density of lubricating oil is between 0.80 and 0.90, and the density of water is 1. When no water is accumulated in the water storage cavity 43, the water drain hole 42 is sealed by the floater 6, and when water is accumulated in the lower part of the water storage cavity 43, the floater 6 floats upwards to open the water drain hole 42, so that the water accumulation 3 is discharged out of the water storage cavity 43, the density of liquid contacting the floater 6 is reduced to the density of lubricating oil along with the reduction of the water level, and at the moment, the floater 6 gradually descends and seals the water drain hole 42, so that the water drain process is completed.
Further, the additional chamber 4 is provided with a cover plate 44 at an open end of an upper portion of the water storage chamber 43, and the cover plate 44 is used for ensuring that the vacuum pump is not leaked with gas and oil in an operating state, so that the additional chamber 4 becomes a part of the whole oil tank.
In normal operation, the liquid level in the cavity is affected by the exhaust pressure, so that the liquid pressure in the additional cavity 4 exceeds one atmosphere, but the water drain hole 42 is open to the atmosphere, so that the liquid pressure in the cavity has additional air pressure, which causes the float 6 not to open the water drain hole 42, as long as the vacuum pump is in an operating state or in an operating state with flow. Only when the vacuum pump is stopped or operated in a state without exhaust, after the internal and external air pressures of the cavity are balanced, the float 6 naturally and reliably operates under the density difference of water or lubricating oil. In order to make the float 6 seal reliable, it is necessary to maintain a reliable seal between the contact surface of the float 6 and the periphery of the drain hole 42, and it is generally possible to add a sealing gasket to the bottom of the float 6 or to the portion in contact with the additional chamber 4, the material of said sealing gasket being not limited at all, and in this embodiment it is preferably a rubber gasket which is added to the bottom of the float 6. Since the density of the float 6 (floatable portion) is controlled to be between 0.93 and 0.95, the working effect thereof is very good and reliable.
Claims (4)
1. The utility model provides a vacuum pump is ponding automatic release for oil tank, the vacuum pump oil tank include oil tank body (1), be provided with lubricating oil (2) in the hollow die cavity of oil tank body (1), the below of lubricating oil (2) is ponding (3), has seted up oil return hole (11) and oil drain hole (12), its characterized in that on oil tank body (1): the automatic accumulated water release device comprises an additional cavity (4), wherein the additional cavity (4) is arranged beside an oil tank body (1) and is positioned at one side of an oil drain hole (12), a through hole is formed in one side wall of the additional cavity (4) and is an oil inlet hole (41), the position of the oil inlet hole (41) corresponds to that of the oil drain hole (12) and is communicated with the oil inlet hole, a hollow water storage cavity (43) is formed in the middle of the additional cavity (4), a water drain hole (42) is formed in the bottom of the additional cavity (4), a float (6) is arranged in the water storage cavity (43) and is positioned at the position of the water drain hole (42), the float (6) is limited at the bottom of the additional cavity (4) through a positioning screw (5) and can float upwards, when no accumulated water exists in the water storage cavity (43), the float (6) floats upwards to open the water drain hole (42), so that the density of the water storage cavity (3) is gradually lowered, the density of the water is gradually lowered, and the density of the water is gradually lowered along with the water drain density of the float (6), and the density of the water is gradually lowered; the additional cavity (4) is fixedly connected with the oil tank body (1) through a fastener or is integrally manufactured; the additional cavity (4) is provided with a cover plate (44) at the opening end of the water storage cavity (43), and the cover plate (44) is used for ensuring that the vacuum pump is free from leakage of gas and oil in the working state.
2. An automatic release device for accumulated water in a vacuum pump tank according to claim 1, characterised in that the density of the float (6) is between 0.93 and 0.95, the density of the lubricating oil is between 0.80 and 0.90 and the density of the water is 1.
3. An automatic release device for accumulated water in a vacuum pump tank according to claim 1, characterized in that the float (6) is provided with a sealing gasket at the bottom or at the contact point with the additional cavity (4).
4. The automatic accumulated water release device for the vacuum pump oil tank according to claim 3, wherein the sealing gasket is a rubber gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964958.0A CN108825860B (en) | 2018-08-23 | 2018-08-23 | Automatic accumulated water release device for vacuum pump oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964958.0A CN108825860B (en) | 2018-08-23 | 2018-08-23 | Automatic accumulated water release device for vacuum pump oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825860A CN108825860A (en) | 2018-11-16 |
| CN108825860B true CN108825860B (en) | 2024-07-12 |
Family
ID=64150515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810964958.0A Active CN108825860B (en) | 2018-08-23 | 2018-08-23 | Automatic accumulated water release device for vacuum pump oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825860B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3767108B1 (en) * | 2019-07-15 | 2021-06-02 | Pfeiffer Vacuum Gmbh | Vacuum device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4033751A1 (en) * | 1990-10-24 | 1992-04-30 | Karl Wiedemann | Oil separator for oil-lubricated vacuum pumps - has bottom-less housing contg. packing with blow-off pipe and duct with collector part at bottom etc. |
| JPH07197886A (en) * | 1993-12-28 | 1995-08-01 | Tokico Ltd | Oil-cooled type air compressor |
| CN208670222U (en) * | 2018-08-23 | 2019-03-29 | 苏州沧海真空机械有限公司 | A kind of vacuum pump oil box ponding automatic releasing device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA958579B (en) * | 1994-10-13 | 1996-05-27 | John Edgar Scragg | Separator for separating a heavier liquid from a lighter liquid |
| JP3199643B2 (en) * | 1996-08-29 | 2001-08-20 | 大淀小松株式会社 | Vehicle with movable center of gravity |
| BE1010782A3 (en) * | 1996-12-03 | 1999-01-05 | Atlas Copco Airpower Nv | Compressor installation with oil separation from condensate and thus used device for separation of oil from condensate. |
| JP2003144807A (en) * | 2001-11-15 | 2003-05-20 | Tlv Co Ltd | Oil-water separator |
| JP2003342972A (en) * | 2002-05-29 | 2003-12-03 | Komatsu Ltd | Water drainage apparatus of fuel tank |
| CN1587783A (en) * | 2004-07-14 | 2005-03-02 | 陈书华 | Float ball type trap |
| KR101053995B1 (en) * | 2008-10-08 | 2011-08-03 | (주) 디아이엔바이로 | Oil / water separator |
| CN201603427U (en) * | 2009-12-01 | 2010-10-13 | 威海新时代石油装备科技有限公司 | Automatic water draining oil interceptor for oil tank |
| CN202157931U (en) * | 2011-07-26 | 2012-03-07 | 山东六和集团有限公司 | Automatic water drainage device for air storage tank of air compressor |
| CN102828869B (en) * | 2012-09-24 | 2014-07-23 | 柳工常州挖掘机有限公司 | Diesel oil box with water discharging device |
| CN104019016A (en) * | 2014-06-26 | 2014-09-03 | 吉首大学 | Automatic drainage device of air compressor |
| CN104747898B (en) * | 2015-03-09 | 2018-07-17 | 胡玮琳 | A kind of general automatic water drainage device of positive and negative pressure |
| CN207393594U (en) * | 2017-08-23 | 2018-05-22 | 大连玉源环境工程有限公司 | A kind of floating-plug Auto-drainage fuel tank |
-
2018
- 2018-08-23 CN CN201810964958.0A patent/CN108825860B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4033751A1 (en) * | 1990-10-24 | 1992-04-30 | Karl Wiedemann | Oil separator for oil-lubricated vacuum pumps - has bottom-less housing contg. packing with blow-off pipe and duct with collector part at bottom etc. |
| JPH07197886A (en) * | 1993-12-28 | 1995-08-01 | Tokico Ltd | Oil-cooled type air compressor |
| CN208670222U (en) * | 2018-08-23 | 2019-03-29 | 苏州沧海真空机械有限公司 | A kind of vacuum pump oil box ponding automatic releasing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108825860A (en) | 2018-11-16 |
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