CN101929450A - Vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into pump body - Google Patents
Vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into pump body Download PDFInfo
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- CN101929450A CN101929450A CN 201010502149 CN201010502149A CN101929450A CN 101929450 A CN101929450 A CN 101929450A CN 201010502149 CN201010502149 CN 201010502149 CN 201010502149 A CN201010502149 A CN 201010502149A CN 101929450 A CN101929450 A CN 101929450A
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Abstract
The invention belongs to the technical field of vacuum pumps, in particular to a vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into a pump body. In the invention, the vacuum pump adopts a double-gas ballast valve structure, i.e. double gas ballast valves are arranged on a rough vacuum level; each gas ballast valve consists of a regulating part and a check valve, the regulating part is used for controlling the quantity of doped gas, and the check valve is used for preventing backflow from occurring when the pressure of the mixed gas in a pump cavity is higher than that of the doped gas; the vacuum pump is also provided with a discharge filter; the discharge filter comprises a filtering tank body, an oil drain valve, a filter element, an upper cover plate and a lower cover plate; the filter element is arranged in the filtering tank body and is used for filtering impurities absorbed by the pump; and a sewage removal port is arranged below the filtering tank body of the pump body and is used for removing all the particulate matters contained in pumped gas. The vacuum pump can effectively prevent the oil, the water and the contained particulate matters from being absorbed into the pump body, thereby greatly improving the operational condition of the pump body and prolonging the service life of the pump body.
Description
Technical field
Pump of the present invention belongs to the vacuum pump technology field, is specifically related to a kind of oil, water and contained particulate matters of preventing and is inhaled into the vacuum pump of the pump housing.
Background technique
The domestic and international at present vacuum equipment of producing, in extracting the process of vacuum, oil, water and contained particulate matters often are inhaled into the pump housing, cause the wearing and tearing and the damage of the pump housing.Still do not have and see two gas ballastings and do not take the structure that the pump housing can be removed the foreign material in the pump housing apart.
Summary of the invention
The object of the present invention is to provide a kind of oil, water and contained particulate matters of preventing to be inhaled into the vacuum pump of the pump housing.
The vacuum pump of the present invention's design adopts two gas ballast valve structures, and two gas ballast valves promptly are set on the rough vacuum level; Described gas ballast valve is made up of adjusting element and check valve two-part, and adjusting element is used to control the gas flow that mixes, and check valve is used to prevent occur backflowing when the interior mixture pressure of pump chamber is higher than aeration pressure.
Under the bigger operating mode of vapour quantity, two gas ballast valve structures are in different time, and classification, segmentation progressively are evacuated to certain degree of vacuum with (after oil, the water separation) gas in the seal container.
In addition, the vacuum pump of the present invention's design also is provided with discharge filter.Its structure is seen shown in Figure 1.This discharge filter comprises: filter box 1, fuel outlet valve 2, mistake filter core 3, mistake filter core fixing frame 5, upper and lower cover plate 7; Cross filter core 3 and be placed in the filter box 1, be used for the impurity that filterpump sucks; Fuel outlet valve 2 is used for fluid is emitted outside the pump; Design has a dirt removal mouth below pump housing filter box 1, is used for removing foreign material such as particulate material, the dirt that pumped gas contains; Upper and lower cover plate 7 passes through screw 8 with filter box 1 capping.
Like this, can not need to remove superfluous many parts and can remove the interior foreign material of the pump housing, reduce the dead time of machine.
This vacuum pump can prevent effectively that oil, water and contained particulate matters are inhaled into the pump housing, thereby improves pump housing operation conditions greatly, prolongs pump housing working life.
This vacuum pump is applicable to packing, and food prints, the paper industry, and the wood industry, glass, brick is made pottery, building material, rubber plastic, environmental protection, metallurgy, machinery, space flight and aviation, beverage, pharmacy, electronics, printed wiring board, semiconductor, photoelectricity, industries such as wind-powered electricity generation.
Description of drawings
Fig. 1 is the structural representation of the pump housing of the present invention.
Number in the figure: 1. filter box, 2. fuel outlet valve is 3. crossed filter core, and 4. flat belt is 5. crossed the filter core fixing frame, 6. cushion block, 7. upper and lower cover plate, 8. screw.
Embodiment
With SRV single-stage oil sealing sliding vane rotary vacuum pump is example, this vacuum pump is integrated air inlet check valve, and two gas ballast valves, exhaust gas filter and oil cooling be radiator but, multiple function parts such as oil return apparatus.Be a of many uses, reliable performance is easy to maintaining, is used to extract the occasion of normal air or inert gas and certain coercibility steam.Can continuous operation in ultimate pressure arrives the atmospheric pressure scope.Pumping equipment with excellent comprehensive performance.
Vacuum pump through belt transmission, drives the rotor of the off-centre installation that three blade grooves are arranged by motor, and three blades in the groove are divided into three different parts with pump housing volume when rotated, along with the rotation of rotor, and the descending cyclically-varying of single volume.UNICOM's suction port when volume begins to become big by minimum, this moment, gas was inhaled into, along with rotor rotation, volume is air-breathing when maximum to reach maximization, this moment and suction port are isolated, volume under closed state with the rotation of rotor, the space is descending to gradually change and connects relief opening, when volume diminishes and gas is compressed to the conversion that surpasses three directions and the variation of volume, finally reach oil mist separator (be also referred to as oil gas filter core or deaerator, or exhaust filter core etc.), oil and oil vapor are stopped by oil mist separator, gas is discharged out fuel tank, thereby finishes the suction and discharge process one time.Oil passes back into the lubricated and cooling to part of pump housing inside by fuel tank under pressure difference, a part of oil flows through the filtration that oily filter core carries out impurity and dust before entering the pump housing, enters the pump housing again after the radiator cooling, and reenter fuel tank when exhaust.Stop that by oil mist separator the oil droplet that gets off flows back in the pump housing through the float oil return mechanism again.
When containing steam being condensable gas in pumped gas, the Environmental Conditions of vacuum pump is just quite abominable.Cause vacuum pump lubricant oil generation emulsion deterioration, influence the ultimate pressure that vacuum pump can reach, greasy property descends, and wearing and tearing increase the weight of, even will cause zero device generation corrosion such as the pump housing and rotor, rots, and causes complete machine to scrap.The two gas ballast valve structures that are arranged on the rough vacuum level have increased the gas ballasting amount, improved operating temperature, reduced exhaust pressure, improve the ability that extracts steam effectively, the partial pressure of water vapour reaches maximum pressure less than it and just steam can be discharged pump chamber in the middle of compression process, (after oil, the water separation) gas in the seal container progressively is evacuated to certain degree of vacuum, has solved the water vapor problem.
Two gas ballast valves can quicken to extract steam out and unlikely pollution oil under the different operating state.When if vacuum pump is only extracted permanent gases out, gas does not liquefy because of the increase of pressure, the deterioration of then it doesn't matter pump oil.But if come vacuum drying or extract humid air out with this pump, permanent gases is then not only arranged in the gas but also also have water vapour, if when not extracting this part water vapour out with the pump of gas ballasting, steam will liquefy and be dissolved in the oil, the vacuum character deterioration of oil, thereby reduced the pumping speed and the degree of vacuum of pump.Now the compression process to water vapour further is described below: be pumped the water vapour that removes, in pressing chamber, compress, till outlet valve is opened, if the temperature in the supposition pump is 60 ℃, then the water saturation vapor tension is 20000 handkerchiefs under this temperature, in case reaching above-mentioned pressure, the water vapour in compression process begins to be condensed into water, but can't push outlet valve open during 20000 handkerchiefs, because outlet valve is to lead to atmosphere to have the spring of outlet valve to push down again, just the internal pressure of pump chamber will be compressed to more than 120000 handkerchiefs and just can push outlet valve open, after water vapour is compressed, all is condensed into water latter stage to compression, and sneaks in the oil.
In order to satisfy the requirement of extracting humid air out, and unlikely water vapour pollutes oil, so, this pump is equipped with the gas ballasting device, its principle is to put into air in certain amount to improve the pressure of mixed gas in compression process, and the pressure of mixed gas is the partial pressure sum of the partial pressure and the water vapour of air, when the partial pressure of steam does not reach saturation vapour pressure under the pump temperature as yet, mixture pressure surpasses the pressure of outlet valve and opens outlet valve, makes steam have little time to liquefy in pump chamber and be excluded outside the pump.
Another purposes of gas ballast valve can be in order to recover the vacuum ultimate pressure of a pump, though we are in order to extract general air out sometimes, the gas that includes coercibility is less, general gas ballast valve cuts out, but when of long duration, a small amount of condensable gas dirtization that oil is but contained by air gradually, concerning the pump that does not have gas ballasting mechanism, has only more renew oil, or the heating of pump oil, allow the steam raising of liquefaction could recover the original ultimate pressure of pump, and for the pump that gas ballast valve is housed, as long as open the ultimate pressure that can recover vacuum pump in 1 to 2 hours.
Gas ballast valve is made up of adjusting element and check valve two-part.Adjusting element is used for controlling the gas flow that mixes.Check valve is to be used for preventing occurring backflowing when the interior mixture pressure of pump chamber is higher than aeration pressure.
When the gas ballast valve internal pressure was lower than external pressure, gas ballast valve was opened, and before the saturation vapor pressure when gas enters pump chamber and makes the inner condensable gas partial pressure of pump chamber reach the pump temperature, the pressure of pressurized gas has reached exhaust pressure, and condensable gas is discharged; When the gas ballast valve internal pressure was higher than external pressure, gas ballast valve cut out.
When putting into gas in vacuum pump shutdown or the pump, the check valve of suction port is closed, and isolates the purpose that the pump housing and vacuum system reach separate pump and taken out pipeline or container.And the integrated supporting discharge filter of easy disassembly of vacuum pump is seen shown in Figure 1.Wherein, filter box 1: in filter element device was housed, dirt accumulates herein.Fuel outlet valve 2: fluid is emitted outside the pump by fuel outlet valve.Cross filter core 3: the impurity that pump is sucked filters.Flat belt 4: transmission is used.Cross filter core fixing frame 5: will cross filter core with this and fix.Cushion block 6: regulate height during the fixing frame assembling.Upper and lower cover plate 7: the airtight usefulness of filter box.Screw 8: in order to fixing upper and lower cover plate.Being provided with a square structure below filter box 1 is the dirt removal mouth, only need remove several screws and just can open.After removing dirt sealing gasket is put appropriate bonnet upper cover plate, screw screw and get final product.
It is more convenient to the maintaining of vacuum equipment that this discharge filter makes.Avoid the pollution of surrounding atmosphere greatly, also effectively protected vacuum pump and vacuum system and vacuum equipment.
Technical feature, technical parameter:
The speed of exhaust: (SRV630)--645m
3/ h, (SRV750)-750m
3/ h;
Limiting vacuum, total pressure: (gas ballasting is closed) ﹤ 8Pa;
Limiting vacuum, total pressure: (driving a gas ballast valve) ﹤ 70Pa;
Limiting vacuum, total pressure: (driving two gas ballast valves) ﹤ 200Pa;
Can extract the maximum steam partial pressure of air: mbar;
Drive a gas ballast valve: (SRV630)--40, (SRV750)-50;
Drive two gas ballast valves: (SRV630)--60, (SRV750)-70;
Can extract steam vapour amount: kg/h;
Drive a gas ballast valve: (SRV630)--17, (SRV750)-24;
Drive two gas ballast valves: (SRV630)--26, (SRV750)-34;
Noise: (SRV630)--72dB (A), (SRV750)-75 dB (A);
Weight: 700kg;
Revolution speed: (SRV630)--830rpm, (SRV750)-980rpm;
Use oil mass: maximum: 24 liters of minimums: 20 liters.
Claims (2)
1. one kind can prevent that oil, water and contained particulate matters are inhaled into the vacuum pump of the pump housing, it is characterized in that this vacuum pump adopts two gas ballast valve structures, promptly is provided with two gas ballast valves on the rough vacuum level; Described gas ballast valve is made up of adjusting element and check valve two-part, and adjusting element is used to control the gas flow that mixes, and check valve is used to prevent occur backflowing when the interior mixture pressure of pump chamber is higher than aeration pressure.
2. vacuum pump according to claim 1 is characterized in that this vacuum pump also is provided with discharge filter, and this discharge filter comprises: filter box, fuel outlet valve, cross filter core, cover plate up and down; Cross filter core and be placed in the filter box, be used for the impurity that filterpump sucks; Fuel outlet valve is used for fluid is emitted outside the pump; Design has a dirt removal mouth below pump housing filter box, is used for removing the particulate material that pumped gas contains; Upper and lower cover plate by screw with the filter box capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010502149 CN101929450A (en) | 2010-10-11 | 2010-10-11 | Vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010502149 CN101929450A (en) | 2010-10-11 | 2010-10-11 | Vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into pump body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101929450A true CN101929450A (en) | 2010-12-29 |
Family
ID=43368810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010502149 Pending CN101929450A (en) | 2010-10-11 | 2010-10-11 | Vacuum pump capable of preventing oil, water and contained particulate matters from being absorbed into pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101929450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366688A (en) * | 2011-05-25 | 2012-03-07 | 林秀云 | Dust collection and filtration device for weaving workshop |
| CN103967751A (en) * | 2014-05-12 | 2014-08-06 | 中国海洋石油总公司 | Vacuum pumping device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573387A (en) * | 1992-11-13 | 1996-11-12 | The Boc Group Plc | Vacuum pumps |
| CN201337859Y (en) * | 2009-01-15 | 2009-11-04 | 蒋湛 | Vacuum pump oil mist exhaust pressing filter |
| CN101590342A (en) * | 2009-06-24 | 2009-12-02 | 河南送变电建设公司 | A kind of vacuum oil-filter |
| CN201396280Y (en) * | 2009-05-20 | 2010-02-03 | 蒋昕 | Rotary vane vacuum pump |
-
2010
- 2010-10-11 CN CN 201010502149 patent/CN101929450A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573387A (en) * | 1992-11-13 | 1996-11-12 | The Boc Group Plc | Vacuum pumps |
| CN201337859Y (en) * | 2009-01-15 | 2009-11-04 | 蒋湛 | Vacuum pump oil mist exhaust pressing filter |
| CN201396280Y (en) * | 2009-05-20 | 2010-02-03 | 蒋昕 | Rotary vane vacuum pump |
| CN101590342A (en) * | 2009-06-24 | 2009-12-02 | 河南送变电建设公司 | A kind of vacuum oil-filter |
Non-Patent Citations (2)
| Title |
|---|
| 《真空》 19910630 张以忱 第三讲：机械真空泵（三） 第45页 1-2 , 第6期 2 * |
| 《真空》 20090331 张以忱 第十六讲 真空***的操作与维护 第78页 2 第46卷, 第2期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366688A (en) * | 2011-05-25 | 2012-03-07 | 林秀云 | Dust collection and filtration device for weaving workshop |
| CN103967751A (en) * | 2014-05-12 | 2014-08-06 | 中国海洋石油总公司 | Vacuum pumping device |
| CN103967751B (en) * | 2014-05-12 | 2016-03-23 | 中国海洋石油总公司 | A kind of vacuum pumping device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101229 |