CN208578731U - One kind having oily screw vacuum pump intaking valve structure - Google Patents
One kind having oily screw vacuum pump intaking valve structure Download PDFInfo
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- CN208578731U CN208578731U CN201821164942.3U CN201821164942U CN208578731U CN 208578731 U CN208578731 U CN 208578731U CN 201821164942 U CN201821164942 U CN 201821164942U CN 208578731 U CN208578731 U CN 208578731U
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- venthole
- partition
- vacuum pump
- air cavity
- valve block
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Abstract
The utility model discloses one kind oily screw vacuum pump intaking valve structure, shell, capping and the valve block of inside including having connecting flange, closure surface is provided with venthole a, and one piece of partition is arranged in enclosure interior, and middle part and bottom surface offer venthole b, c positioned at valve block two sides respectively；It is provided with the mechanism that one group of pneumatic control valve block opens or closes in shell, is capable of forming larger differential pressure control valve block opening and closing.
Description
Technical field
The utility model relates to a kind of structure improvement for having oily screw vacuum pump intake valve.
Background technique
In initial vacuum field, there is oily screw vacuum pump gradually to be received by every field, energy conservation can with mute
It has highlighted by property and has been approved by market, the vacuum products of other forms can be replaced.Domestic control intake valve is due to difficulty at present
To form larger pressure difference, thus this field can not be applied to.And external intake valve is made by designing different throttle joints
Pressure difference is made to control valve block movement, structure is excessively complicated.
Utility model content
The purpose of this utility model is in order to overcome the problems referred above, to propose that one kind has oily screw vacuum pump intaking valve structure, energy
Enough form larger differential pressure control valve block opening and closing.
One kind that the utility model is proposed has oily screw vacuum pump intaking valve structure, the shell including having connecting flange
Body, capping and the valve block of inside, wherein connecting flange access other equipment are passed through gas, and housing bottom accesses head, special
Sign is,
Closure surface is provided with venthole a, and one piece of partition is arranged in enclosure interior, and middle part and bottom surface offer be located at respectively
Venthole b, c of valve block two sides；
It is provided with the mechanism that one group of pneumatic control valve block opens or closes in shell, for pulling valve block, specifically includes:
Sliding block, be located at capping partition between, around with inner walls sealing gland, can along inner walls axially move
It is dynamic, partition upper space is divided into mutually independent first air cavity, the second air cavity, wherein the first air cavity is connected to venthole a；
Slider bottom is connected with the connecting rod of insert partition, inserts end sealing gland, and valve block is fixed on connection boom end；
Capping bottom is fixed in spring, one end, and the other end is fixed on shoe surface；
Connecting flange is located at below partition；
Venthole c accesses air pump, using the components such as pipeline and venthole a by connecting, venthole b by valve respectively with
Second air cavity and the place venthole a, c gas circuit are connected.
Further, for the ease of automatically control, venthole b by two-bit triplet solenoid valve be separately connected the second air cavity and
Gas circuit where venthole a, c.
Further, in order to expand the gas flow of the second air cavity, enough pressure differences is manufactured, convex to form centrum knot in the middle part of partition
Structure, meanwhile, vertebral body structure part coats connecting rod surface, is easily installed the components such as sealing gland circle.
Further, capping middle part has lug boss, the internal connecting pin for forming spring, to install spring.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model.
Fig. 2 is the external structure schematic diagram of the utility model.
Fig. 3 is the utility model part-structure sectional view.
1 it is in the figure the first air cavity, 2 be the second air cavity, 3 be sliding block, 4 be spring, 5 be valve block, 6 is partition, a, b, c
It is venthole respectively.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines diagram, and above-mentioned technical proposal is further described.
One kind as shown in the figure has an oily screw vacuum pump intaking valve structure, including the first air cavity 1, the second air cavity 2, sliding block 3,
Spring 4, valve block 5, partition 6, venthole a, venthole b and venthole c.Its valve block opening and closing process approximately as:
The first step, starting.The air pump of venthole c starts to extract air, and the first air cavity of same gas circuit is in venthole c
Air in 1 is extracted through venthole a, at this point, solenoid valve control venthole b is connected to outside air, where venthole a, c
Gas circuit closing；
Second step, valve block 5 are opened.Air pump persistently extracts the air in the first air cavity 1, until having one in the first air cavity 1
Fixed vacuum degree forms pressure difference with the second air cavity 2, and sliding block 3 is walked upwards under differential pressure action, passes through connecting rod band movable valve block 5
Far from housing bottom；
Third step, valve block 5 are closed.When vacuum degree reaches, control module issues instruction, solenoid valve control venthole b and outer
Air shutdown in portion's is connected with gas circuit where venthole a, c, at this time the air pressure rapid equalisation in the second air cavity 2 and the first air cavity 1,
Sliding block 3 loses pressure difference and resets under the effect of spring 4, is moved down by connecting rod band movable valve block 5, pastes it with housing bottom
It closes, disconnects intake valve and head, when vacuum degree cannot meet the needs, entire circulation is started again at.
In the present embodiment, venthole a, b, c is respectively set at two, is located at equipment two sides, is convenient for practical docking device pipe
Road.In actual use, the venthole for not accessing pipeline blocks.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection scope is asked to be defined by appended claims and its equivalent.
Claims (4)
1. one kind has oily screw vacuum pump intaking valve structure, shell, capping and the valve block of inside including having connecting flange,
It is characterized in that,
Closure surface is provided with venthole a, and one piece of partition is arranged in enclosure interior, and middle part and bottom surface are offered respectively positioned at valve block
Venthole b, c of two sides；
The mechanism that one group of pneumatic control valve block opens or closes is provided in shell, specifically include-
Sliding block, be located at capping partition between, around with inner walls sealing gland, can be moved axially along inner walls, will
Partition upper space is divided into mutually independent first air cavity, the second air cavity, wherein the first air cavity is connected to venthole a；Sliding block bottom
Portion is connected with the connecting rod of insert partition, inserts end sealing gland, and valve block is fixed on connection boom end；
Capping bottom is fixed in spring, one end, and the other end is fixed on shoe surface；
Connecting flange is located at below partition；
Venthole c access air pump, with venthole a connect, venthole b by valve respectively with the second air cavity and venthole a, c institute
It is connected in gas circuit.
2. one kind according to claim 1 has oily screw vacuum pump intaking valve structure, which is characterized in that venthole b passes through
Two-bit triplet solenoid valve is separately connected gas circuit where the second air cavity and venthole a, c.
3. one kind according to claim 1 has oily screw vacuum pump intaking valve structure, which is characterized in that protrusion in the middle part of partition
Vertebral body structure is formed, part coats connecting rod surface.
4. one kind according to claim 1 has oily screw vacuum pump intaking valve structure, which is characterized in that capping middle part has
Lug boss, the internal connecting pin for forming spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821164942.3U CN208578731U (en) | 2018-07-20 | 2018-07-20 | One kind having oily screw vacuum pump intaking valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821164942.3U CN208578731U (en) | 2018-07-20 | 2018-07-20 | One kind having oily screw vacuum pump intaking valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208578731U true CN208578731U (en) | 2019-03-05 |
Family
ID=65511144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821164942.3U Active CN208578731U (en) | 2018-07-20 | 2018-07-20 | One kind having oily screw vacuum pump intaking valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208578731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708855A (en) * | 2018-07-20 | 2018-10-26 | 上海优耐特斯压缩机有限公司 | One kind having oily screw vacuum pump intaking valve structure and its control method |
-
2018
- 2018-07-20 CN CN201821164942.3U patent/CN208578731U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708855A (en) * | 2018-07-20 | 2018-10-26 | 上海优耐特斯压缩机有限公司 | One kind having oily screw vacuum pump intaking valve structure and its control method |
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