CN108825503A - The making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump - Google Patents
The making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump Download PDFInfo
- Publication number
- CN108825503A CN108825503A CN201811008290.9A CN201811008290A CN108825503A CN 108825503 A CN108825503 A CN 108825503A CN 201811008290 A CN201811008290 A CN 201811008290A CN 108825503 A CN108825503 A CN 108825503A
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- Prior art keywords
- vacuum pump
- oil
- threaded bolt
- exhaust end
- end base
- Prior art date
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 100
- 239000007924 injection Substances 0.000 title claims abstract description 100
- 238000000926 separation method Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 206010003504 Aspiration Diseases 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- 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
- F04C29/026—Lubricant separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention relates to a kind of making-up air devices of exhaust end base of oil injection threaded bolt formula vacuum pump, including exhaust end base of oil injection threaded bolt formula vacuum pump host, it further include gas and oil separating plant, a snorkel is fixed on the exhaust end base of oil injection threaded bolt formula vacuum pump host, one end of the snorkel is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host, the other end of the snorkel is connected to the inner cavity of the gas and oil separating plant, above the oil level of gas and oil separating plant.The configuration of the present invention is simple, components are few, therefore reliability is high, manufacturing cost is extremely low.
Description
Technical field
The present invention relates to exhaust end base of oil injection threaded bolt formula field of vacuum, in particular to the tonifying Qi of a kind of exhaust end base of oil injection threaded bolt formula vacuum pump fills
It sets.
Background technique
Vacuum pump is widely used in the fields such as electronics, printing papermaking, chemical and medicine industry, food processing and packaging, material processing.
Currently, common vacuum pump includes dry screw vacuum pump, water ring pump, reciprocating pump, slide valve pump, sliding vane rotary pump, lobe pump on the market
With diffusion pump etc..Be limited by the working principle and structure of above-mentioned all kinds of vacuum pumps, these vacuum pumps in use or mostly or
Less in some shortcomings, for example, water ring pump energy consumption is very high, dry type screw pump, reciprocal pump discharge very little, single-stage lobe pump vacuum degree
It is not high, it is only used for the occasion etc. not high to vacuum level requirements.
Exhaust end base of oil injection threaded bolt formula vacuum pump is by host machine cavity oil spout of the gas and oil separating plant to exhaust end base of oil injection threaded bolt vacuum pump, so that single
The final vacuum of grade exhaust end base of oil injection threaded bolt formula vacuum pump is up to 0.2Torr (1Torr=133.3Pa), and maximum pumping speed is up to 9000m3/
H can also realize that frequency conversion vacuumizes, and obtain exhaust end base of oil injection threaded bolt formula vacuum pump and use suitable for various working, and compared to water ring pump
40% or more energy conservation, therefore, exhaust end base of oil injection threaded bolt formula vacuum pump has been more and more widely used.
However, when exhaust end base of oil injection threaded bolt formula vacuum pump internal vacuum reaches about 100Torr, the sucking of exhaust end base of oil injection threaded bolt formula vacuum pump
Gas flow relative to distributive value ratio very little, excessively high intake vacuum can cause rotor to tremble in machine cavity aggravation, cause
Exhaust end base of oil injection threaded bolt formula vacuum pump noise, vibration are obviously improved.Currently, there are mainly two types of settling mode：
One is the machine cavity tonifying Qi by setting solenoid valve to exhaust end base of oil injection threaded bolt formula vacuum pump, principle is controlled using PLC
Device receives vacuum transducer signal, and when detecting that exhaust end base of oil injection threaded bolt formula vacuum pump internal vacuum reaches 100Torr, PLC is issued
Opens solenoid valve is instructed, to exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity tonifying Qi.The air compensation of this tonifying Qi mode can not be adjusted, and electromagnetism
It is very high that valve is especially big flux solenoid valve cost, in addition, solenoid valve is easy to damage, is unfavorable for controlling cost.
Referring to Fig. 1, another way is the installation check valve 4 at exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity gas supplementing opening, works as oil spout
When vacuum degree reaches 100Torr in screw-type vacuum pump machine cavity, between external atmospheric pressure and exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity
Pressure difference overcome one-way valve spring power, atmospheric pressure tonifying Qi into exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity.This tonifying Qi mode starts
Stage can generate noise, in addition, one-way valve spring poor reliability, the oil liquid being easy to cause in exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity
It leaks out.
Above two settling mode is from atmosphere tonifying Qi, it is therefore desirable to be added in the air inlet of solenoid valve or check valve
Air filter 5 so increases the use cost of client, in addition, it is certain it is specific vacuumize occasion, strictly air is forbidden to be mixed into, caused
The application critical constraints of the exhaust end base of oil injection threaded bolt formula vacuum pump of this kind of tonifying Qi from atmosphere.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump,
Its structure is simple, components are few, therefore reliability is high, manufacturing cost is extremely low, is connected to exhaust end base of oil injection threaded bolt formula vacuum by snorkel
The machine cavity of host and the inner cavity of gas and oil separating plant are pumped, when exhaust end base of oil injection threaded bolt formula vacuum pump is in low vacuum (pumping early period), oil spout
Screw-type vacuum pump host is felt elated and exultant by snorkel to gas and oil separating plant, can effectively avoid exhaust end base of oil injection threaded bolt formula vacuum pump over-voltage
Contracting, reaches energy saving purpose, and after exhaust end base of oil injection threaded bolt formula vacuum pump is in high vacuum, unstripped gas in gas and oil separating plant is to exhaust end base of oil injection threaded bolt
The machine cavity air inlet of formula vacuum pump host avoids the failure that vibration occurs in exhaust end base of oil injection threaded bolt formula vacuum pump, noise increases, in addition, utilizing
Snorkel is connected to the inner cavity of gas and oil separating plant and the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host, carries out venting one's pent-up feelings or tonifying Qi, may be used also
Extraneous air and unstripped gas mixing are avoided, makes to adapt to more occasions using the exhaust end base of oil injection threaded bolt formula vacuum pump of making-up air device of the present invention
It uses.
The technical scheme is that：A kind of making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump, including exhaust end base of oil injection threaded bolt formula vacuum
Host is pumped, further includes gas and oil separating plant, is fixed with a snorkel, the ventilation on the exhaust end base of oil injection threaded bolt formula vacuum pump host
One end of pipe is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host, the other end of the snorkel and the gas and oil separating plant
Inner cavity connection, above the oil level of gas and oil separating plant.
The snorkel uses hard pipeline.
The snorkel uses soft pipeline.
By at least one section of hard pipeline and at least, one section of soft pipeline connects and composes the snorkel.
The hard pipeline is copper pipe or is iron pipe or is steel pipe or is aluminum pipe.
The soft pipeline be oil resistant add cloth sebific duct or be oil resistant spiral sebific duct or be oil transportation steel wire establishment sebific duct.
The gas and oil separating plant is the gas and oil separating plant that exhaust end base of oil injection threaded bolt formula vacuum pump carries, alternatively, the oil gas point
It is the gas and oil separating plant being independently arranged from device.
One end of the snorkel is fixed on exhaust end base of oil injection threaded bolt formula vacuum pump host by union nut, with exhaust end base of oil injection threaded bolt formula
The machine cavity of vacuum pump host is connected to, and the other end of the snorkel is fixed on gas and oil separating plant by union nut, with oil
The inner cavity of air separation is connected to.
One end of the snorkel is fixed on exhaust end base of oil injection threaded bolt formula vacuum pump host by flanged joint, with exhaust end base of oil injection threaded bolt formula
The machine cavity of vacuum pump host is connected to, and the other end of the snorkel is fixed on gas and oil separating plant by flanged joint, with oil
The inner cavity of air separation is connected to.
It has the advantages that by adopting the above technical scheme：
1, the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump includes exhaust end base of oil injection threaded bolt formula vacuum pump host, exhaust end base of oil injection threaded bolt formula vacuum pump
Host is used for gas in evacuation container, forms vacuum, further includes gas and oil separating plant, and gas and oil separating plant is conventional for dividing
Device from oil liquid and gas.It is fixed with a snorkel on the exhaust end base of oil injection threaded bolt formula vacuum pump host, the one of the snorkel
End is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host, the inner cavity of the other end of the snorkel and the gas and oil separating plant
Connection, above the oil level of gas and oil separating plant, snorkel divides the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host and oil gas
Inner cavity connection from device, exhaust end base of oil injection threaded bolt formula vacuum pump start air aspiration stage, and exhaust end base of oil injection threaded bolt formula vacuum pump is in low vacuum, oil spout
The machine cavity of screw-type vacuum pump is felt elated and exultant by snorkel to the inner cavity of gas and oil separating plant, it is possible to prevente effectively from overcompression, design
Higher interior compression ratio realizes energy saving purpose, after exhaust end base of oil injection threaded bolt formula vacuum pump is in high vacuum, the raw material in gas and oil separating plant
Machine cavity air inlet of the gas to exhaust end base of oil injection threaded bolt formula vacuum pump host avoids the event that vibration occurs in exhaust end base of oil injection threaded bolt formula vacuum pump, noise increases
Barrier, relative to traditional machine cavity tonifying Qi by setting air filter, check valve or solenoid valve to exhaust end base of oil injection threaded bolt formula vacuum pump host, benefit
Mode structure with the inner cavity of the machine cavity and gas and oil separating plant of snorkel connection exhaust end base of oil injection threaded bolt formula vacuum pump host is overly simplified,
Therefore, there is high reliablity, advantage at low cost.In addition, itself is containing a large amount of in the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host
Oil liquid, therefore, after being connected to the inner cavity of gas and oil separating plant, mixed oil liquid in the gas of discharge does not influence gas and oil separating plant
Normal operation contains oil liquid in tonifying Qi, does not influence exhaust end base of oil injection threaded bolt formula vacuum pump host normal work, making-up air device of the present invention equally
It also can avoid extraneous air and unstripped gas mixing, relative to traditional gas supplementary structure, using the oil spout of making-up air device of the present invention
Screw-type vacuum pump can also be adapted to more occasions and use.
2, snorkel uses soft pipeline, and exhaust end base of oil injection threaded bolt formula vacuum pump has vibration during the work time, using soft pipe
When road is connected to gas and oil separating plant, it can effectively avoid vibration by snorkel and be transferred to gas and oil separating plant, prevent altogether
Vibration guarantees that gas and oil separating plant works normally.
3, by least one section of hard pipeline and at least one section of soft pipeline connects and composes snorkel, exhaust end base of oil injection threaded bolt formula vacuum pump
There is vibration during the work time, be connected to using at least one section of soft pipeline and at least one section of hard pipeline with gas and oil separating plant
When, it can effectively avoid vibration by snorkel and be transferred to gas and oil separating plant, prevent to resonate, guaranteeing gas and oil separating plant just
Often work.
4, gas and oil separating plant is the gas and oil separating plant that exhaust end base of oil injection threaded bolt formula vacuum pump carries, and can make full use of oil spout spiral shell
The equipment that stick type vacuum pumps itself forms benign cycle.Alternatively, the gas and oil separating plant is the Oil-gas Separation dress being independently arranged
It sets, the gas and oil separating plant being independently arranged can minimize, and as dedicated tonifying Qi equipment, it is included to reduce exhaust end base of oil injection threaded bolt formula vacuum pump
Gas and oil separating plant load.
It is further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the gas supplementary structure schematic diagram of exhaust end base of oil injection threaded bolt formula vacuum pump machine cavity in background technique；
Fig. 2 is structural schematic diagram of the invention.
In attached drawing, 1 is exhaust end base of oil injection threaded bolt formula vacuum pump host, and 2 be gas and oil separating plant, and 3 be snorkel, and 4 be check valve, 5
For air filter.
Specific embodiment
Embodiment one
It referring to fig. 2, is a kind of specific embodiment of the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump.Exhaust end base of oil injection threaded bolt formula vacuum pump
Making-up air device include exhaust end base of oil injection threaded bolt formula vacuum pump host 1, further include gas and oil separating plant 2, exhaust end base of oil injection threaded bolt formula vacuum pump host,
Gas and oil separating plant is equipment conventional in field of vacuum, and in the present embodiment, gas and oil separating plant directly selects oil spout spiral shell
The included gas and oil separating plant of stick type vacuum pump, makes the gas and oil separating plant in addition to forming oil with exhaust end base of oil injection threaded bolt formula vacuum pump host
Liquid circulation is outer, can also also be independently arranged a gas and oil separating plant, specially certainly to exhaust end base of oil injection threaded bolt formula vacuum pump host tonifying Qi
For to exhaust end base of oil injection threaded bolt formula vacuum pump host tonifying Qi.It is fixed with a snorkel 3 on the exhaust end base of oil injection threaded bolt formula vacuum pump host 1,
Hard pipeline, such as the hard pipeline of copper pipe or iron pipe or steel pipe or aluminum pipe oil resistant can be selected in the snorkel, also optional
The soft pipeline of sebific duct is worked out with soft pipeline, such as oil resistant plus cloth sebific duct or oil resistant spiral sebific duct or oil transportation steel wire, may be used also
With by least one section of hard pipeline and at least one section of soft pipeline connects and composes, in this implementation in, what snorkel was selected is stainless
Steel pipe.One end of the snorkel 3 is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host 1, the other end of the snorkel 3 with
The inner cavity of the gas and oil separating plant 2 is connected to, above the oil level of gas and oil separating plant 2, specifically, in exhaust end base of oil injection threaded bolt formula
Vacuum pump host is equipped with a male-pipe and is connected to exhaust end base of oil injection threaded bolt formula vacuum pump host machine cavity, and one end of the snorkel passes through
Union nut is fixedly connected and is connected to the male-pipe, and a male-pipe and oil gas are equipped on the side wall of gas and oil separating plant
The inner cavity of separator is connected to, and is located above oil level, and it is outer with this that the other end of the snorkel equally passes through union nut
Screwed pipe is fixedly connected and is connected to, and certainly, one end of snorkel 3 can also be fixed on exhaust end base of oil injection threaded bolt formula vacuum pump by flanged joint
On host 1, it is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host 1, the other end of snorkel 3 is fixed on oil by flanged joint
On air separation 2, it is connected to the inner cavity of gas and oil separating plant 2.
The operation principle of the present invention is that by taking embodiment one as an example.The machine of snorkel connection exhaust end base of oil injection threaded bolt formula vacuum pump host
The inner cavity of chamber and gas and oil separating plant, when exhaust end base of oil injection threaded bolt formula vacuum pump starts to vacuumize, the machine of exhaust end base of oil injection threaded bolt formula vacuum pump host
Chamber is in negative pressure (incipient stage is low vacuum), and the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump passes through snorkel to gas and oil separating plant
Inner cavity feel elated and exultant, after the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host is in high vacuum, unstripped gas in gas and oil separating plant is to spray
The a large amount of air inlets of machine cavity of oily screw-type vacuum pump host avoid the failure that vibration occurs in exhaust end base of oil injection threaded bolt formula vacuum pump, noise increases.
The making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump of the present invention eliminates air filter, electromagnetism relative to traditional making-up air device
The equipment such as valve, check valve, structure is simple, components are few, therefore reliability is high, manufacturing cost is extremely low, has a vast market
Application prospect.
Claims (9)
1. a kind of making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump, including exhaust end base of oil injection threaded bolt formula vacuum pump host (1), it is characterised in that：
Further include gas and oil separating plant (2), is fixed with a snorkel (3) on the exhaust end base of oil injection threaded bolt formula vacuum pump host (1), it is described logical
One end of tracheae (3) is connected to the machine cavity of exhaust end base of oil injection threaded bolt formula vacuum pump host (1), the other end of the snorkel (3) with it is described
The inner cavity of gas and oil separating plant (2) is connected to, and is located above the oil level of gas and oil separating plant (2).
2. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The snorkel (3)
Using hard pipeline.
3. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The snorkel (3)
Using soft pipeline.
4. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The snorkel (3)
By at least one section of hard pipeline and at least one section of soft pipeline connects and composes.
5. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 2 or 4, it is characterised in that：The stereoplasm tube
Road is copper pipe or is iron pipe or is steel pipe or is aluminum pipe.
6. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 3 or 4, it is characterised in that：The soft pipe
Road be oil resistant add cloth sebific duct or be oil resistant spiral sebific duct or be oil transportation steel wire establishment sebific duct.
7. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The Oil-gas Separation dress
Setting (2) is the gas and oil separating plant that exhaust end base of oil injection threaded bolt formula vacuum pump carries, alternatively, the gas and oil separating plant (2) is to be independently arranged
Gas and oil separating plant.
8. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The snorkel (3)
One end be fixed on exhaust end base of oil injection threaded bolt formula vacuum pump host (1) by union nut, with exhaust end base of oil injection threaded bolt formula vacuum pump host (1)
Machine cavity connection, the other end of the snorkel (3) is fixed on gas and oil separating plant (2) by union nut, with Oil-gas Separation
The inner cavity of device (2) is connected to.
9. the making-up air device of exhaust end base of oil injection threaded bolt formula vacuum pump according to claim 1, it is characterised in that：The snorkel (3)
One end be fixed on exhaust end base of oil injection threaded bolt formula vacuum pump host (1) by flanged joint, with exhaust end base of oil injection threaded bolt formula vacuum pump host (1)
Machine cavity connection, the other end of the snorkel (3) is fixed on gas and oil separating plant (2) by flanged joint, with Oil-gas Separation
The inner cavity of device (2) is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008290.9A CN108825503B (en) | 2018-08-31 | 2018-08-31 | Air supplementing device of oil injection screw type vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008290.9A CN108825503B (en) | 2018-08-31 | 2018-08-31 | Air supplementing device of oil injection screw type vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825503A true CN108825503A (en) | 2018-11-16 |
| CN108825503B CN108825503B (en) | 2024-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811008290.9A Active CN108825503B (en) | 2018-08-31 | 2018-08-31 | Air supplementing device of oil injection screw type vacuum pump |
Country Status (1)
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| CN (1) | CN108825503B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814900A (en) * | 2020-12-31 | 2021-05-18 | 浙江创为真空设备股份有限公司 | Screw pump exhaust pressure stabilizing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112814900A (en) * | 2020-12-31 | 2021-05-18 | 浙江创为真空设备股份有限公司 | Screw pump exhaust pressure stabilizing structure |
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