CN207795521U - A kind of normally closed intake valve of air compressor - Google Patents
A kind of normally closed intake valve of air compressor Download PDFInfo
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- CN207795521U CN207795521U CN201820174625.3U CN201820174625U CN207795521U CN 207795521 U CN207795521 U CN 207795521U CN 201820174625 U CN201820174625 U CN 201820174625U CN 207795521 U CN207795521 U CN 207795521U
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Abstract
The utility model is related to arrive a kind of normally closed intake valve of air compressor,It include valve body,Entering pressure hole is provided on valve body,Relief hole and the cavity in valve body,Gas pipeline interface is connected in entering pressure hole,Upper cover body is connected on valve body,Air admission hole is provided in upper cover body,There is piston in cavity,Piston cap is fixed on cavity,Further include thering is sealing to push up,Sealing top cover is connected to piston,Sealing top and the socket place of piston are provided with emergency stop spring,The bottom of piston and cavity is provided with resetting spring,Solenoid valve is connected to valve body,Sealing top,There is sealing ring on piston and piston cap,Upper cover body O-ring is provided in upper cover body on air admission hole,Air compressor internal pressure is passed through piston by the utility model by relief hole,Hollow pipeline inside piston cap and sealing top is discharged,To realize the purpose of pressure release,During pressure release gap can be formed between sealing top and upper body lid O-ring,The tonifying Qi of intake valve is realized by gap,To ensure oily cycle.
Description
Technical field
This practical property is related to one kind and being related to air compressor machine accessory more particularly to a kind of normally closed intake valve of air compressor.
Background technology
Screw air compressor intake valve is that air inlet of the important component of air compressor machine for air compressor machine controls, and is usually also wrapped
Solenoid valve and bleeder valve have been included, piping connection is passed through.Authorization Notice No. is that the Chinese patent document of CN202768393U discloses
A kind of screw-rod air compressor gas valve, includes the valve body with air admission hole, inner cavity and relief hole, and valve body includes lower valve body and upper valve
Body, it is characterised in that：The lower valve body is equipped with O-ring slot, and O-ring is placed in O-ring slot, and the inner cavity is equipped with gas
Cylinder body, cylinder block top are equipped with sealing top surface, and gland and piston are housed in cylinder block, and the side of valve body is equipped with bleeder valve, releases
Spool, aluminium guide post and sealing ring are equipped in valve, the top of bleeder valve is connected solenoid valve, be distributed in bleeder valve upper air-vent and
Lower gas vent, battery valve control the air admission hole of upper valve body by upper air-vent and lower gas vent.Sealing top surface in cylinder block with
The valve body contact of air inlet nose end is for closing air admission hole.
But the air compressor intake valve of the prior art is when in use, sealing performance is poor, the tonifying Qi mode of intake valve
Complex, situations such as being easy to cause intake valve gas leakage, occurs, and prior art construction is complex, and leak source is more, operation
Trouble.
Utility model content
The utility model lies in that providing a kind of normally closed intake valve of air compressor, the intake valve for solving the prior art is close
Sealing property is poor, and the tonifying Qi mode of intake valve is complex and structure is complex, the more problem of leak source.
Technical solution described in the utility model is as follows：A kind of normally closed intake valve of air compressor, includes valve body, the valve
It is provided with entering pressure hole, relief hole and the cavity in valve body on body, gas pipeline interface, the valve are connected in entering pressure hole
It has been bolted to connection upper cover body on body, air admission hole is provided in the upper cover body, it is characterised in that：It is set in the cavity
It is equipped with piston, cavity hatch end is fixedly connected with piston cap, and piston is slidably arranged relative to piston cap, further includes having sealing
Top, the sealing top cover are connected to piston, and the socket place of sealing top and piston is provided with emergency stop spring, and the bottom of piston and cavity is set
It is equipped with resetting spring, one end of resetting spring is butted on the cavity bottom other end and is butted on piston, in piston, piston cap and sealing top
Portion's pipeline is disposed as hollow, and the sealing top is resisted against air inlet in upper cover body relative to the movable setting of piston and sealing
Hole, the entering pressure hole are communicated in the confined space formed between piston and piston cap, if further including having solenoid valve and dry seal
Circle, the solenoid valve is connected to valve outer surface, solenoid valve positioned at entering pressure hole and gas pipeline interface between, the sealing pushes up,
Be both provided with sealing ring on piston and piston cap, be provided with upper cover body O-ring on the air admission hole in the upper cover body, it is described into
Pressure hole is communicated in gas pipeline interface with relief hole, when gas pressure intensity is discharged from solenoid valve, sealing top and upper body lid O-ring
Between it is separately positioned, when emergency shutdown, sealing top and be close to be arranged between the lid O-ring of upper body.
The utility model is further arranged to：It is provided with two grooves on the piston, is installed respectively in the groove
There are upper sealing ring and lower seal.
The utility model is further arranged to：The relief hole is set as ' ten ' shape, and wherein the one of the relief hole
A hole is connected to cavity, and hole corresponding thereto is carried out closed by bolt, another hole is communicated in the external world, corresponding thereto another
A hole sealed set.
The utility model is further arranged to：It is provided on the valve body and is vented adjustment hole, row for adjusting capacity
Controlled atmosphere knothole is communicated in relief hole, is set to bleeder screw in the exhaust adjustment hole, one end of the bleeder screw is set as
Coniform, bleeder screw passes through relief hole and coniform one end is butted on relief hole inner wall.
The beneficial effects of the utility model：1 the utility model lies in that provide a kind of simple in structure, and leak source is less, operation
The normally closed intake valve of convenient air compressor, is provided with emergency stop spring, can effectively prevent air pressure between piston and piston cap
There is the phenomenon that oil spout when contracting machine emergency stop, can by air compressor internal pressure by relief hole by piston, piston cap and
Hollow pipeline inside sealing top is discharged, to realize the purpose of pressure release, sealing top and upper body lid O during pressure release
Gap can be formed between type circle, the tonifying Qi of intake valve is realized by gap, to ensure oily cycle, relative to existing pressure release
And gas supplementary structure, the pressure release of the utility model and tonifying Qi effect are more notable and simple in structure easy to operate.
Description of the drawings
Fig. 1 is normally closed intake valve dimensional structure diagram in the utility model.
Fig. 2 is in the utility model into normally closed air valve unloaded state schematic cross-sectional view.
Fig. 3 is normally closed intake valve air-suction state schematic cross-sectional view in the utility model.
Fig. 4 is normally closed intake valve emergency stop state schematic cross-sectional view in the utility model.
Fig. 5 is piston structure schematic diagram in the utility model.
Figure label meaning is as follows：1- valve bodies；2- upper cover bodies；3- solenoid valves；4- cavitys；5- entering pressure holes；6- relief holes；7-
Upper cover body O-ring；21- air admission holes；41- sealings top；42- piston caps；43- pistons；44- emergency stop springs；45- resetting springs；61-
Bleeder screw；The upper sealing rings of 431-；432- lower seals.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
The utility model is described in detail with reference to Fig. 1 to Fig. 5, a kind of normally closed intake valve of air compressor, includes valve
Body 1 is provided with entering pressure hole 5, relief hole 6 and the cavity 4 in valve body on the valve body 1, gas is connected in entering pressure hole 5
Pipe joint has been bolted to connection upper cover body 2 on the valve body 1, air admission hole 21 is provided in the upper cover body 2,
It is characterized in that：Piston 43 is provided in the cavity 4,4 open end of cavity is fixedly connected with piston cap 42, and piston 43 is relative to work
Cock cap 42 is slidably arranged, and further includes having sealing top 41, the sealing top 41 is socketed on piston 43, sealing top 41 and piston 43
Socket place is provided with emergency stop spring 44, and piston 43 and the bottom of cavity 4 are provided with resetting spring 45, and one end of resetting spring 45 is supported
Be butted on piston 43 in the 4 bottom other end of cavity, piston 43, piston cap 42 and 41 internal ducts of sealing top be disposed as it is hollow,
The sealing top 41 is described into pressure relative to the movable air admission holes 21 for being arranged and sealing top 41 and be butted in upper cover body 2 of piston 43
Hole 5 is communicated in the confined space formed between piston 43 and piston cap 42, further includes having solenoid valve 3 and several sealing rings, institute
State solenoid valve 3 and be connected to 1 outer surface of valve body, solenoid valve 3 between entering pressure hole 5 and gas pipeline interface, sealing top 41,
Sealing ring is both provided on piston 43 and piston cap 42,21 are provided with upper cover body O-ring on the air admission hole in the upper cover body 2
7, the entering pressure hole 5 is communicated in gas pipeline interface with relief hole 6, when gas pressure intensity is discharged from solenoid valve 3, sealing top 41
It is separately positioned between upper body lid O-ring 7, when emergency shutdown, it is close to be arranged between sealing top 41 and upper body lid O-ring 7, institute
It states and is provided with two grooves on piston 43, sealing ring 431 and lower seal 432 are separately installed in the groove, it is described to let out
Pressure hole 6 is set as ' ten ' shape, and one of described relief hole 6 hole is connected to cavity 4, and hole corresponding thereto is carried out by bolt
Closed, another hole is communicated in the external world, another hole sealed set corresponding thereto, is provided on the valve body 1 for adjusting
It saving capacity and is vented adjustment hole, exhaust adjustment hole is communicated in relief hole 6, bleeder screw 61 is set in the exhaust adjustment hole,
One end of the bleeder screw 61 is set as coniform, and bleeder screw 61 passes through relief hole 6 and coniform one end is butted on pressure release
6 inner wall of hole.
Described in above structure, when air inlet valve position is in stress state, solenoid valve 3 it is electric, by gas-tpe fitting into
Pressure injects compressed gas in hole 5, when pressure gradually increases, due to entering pressure hole be communicated in it is closed between piston 43 and piston cap 42
Space, the pressure in confined space gradually increase, and compression piston 43 moves downward, and when piston 43 moves to 4 bottom of cavity, lets out
Pressure hole 6 is located at the upper sealing ring 431 on piston 43 and between lower seal 432, and piston 43 disconnects relief hole 6 and piston 43, lives
Hollow pipeline inside cock cap 42 and sealing top 41, since air compressor is in running order, in air compressor main machine
Portion generates suction, and suction band dynamic sealing top 41 moves downward, in opening between the air admission hole 21 on sealing top 41 and upper cover body 2
State, air inlet valve position is in air-suction state.
Described in above structure, when air inlet valve position is in unloaded state, solenoid valve 3 powers off, piston 43 and piston cap 42
Between confined space in compressed gas be discharged by solenoid valve 3, be located at 4 bottom of cavity resetting spring 45, push piston
43 move upwards, and when 43 lower seal 432 of piston crosses relief hole 6, the gas pressure intensity inside compressor and in pipeline is logical
It crosses relief hole 6 to be discharged through the hollow pipeline inside piston 43, piston cap 42 and sealing top 41, be inhaled due to existing inside compressor
Power, suction are less than the elastic force of resetting spring 45, and resetting spring 45 is moved upwards with piston 43 and sealing top 41, when piston 43 is transported
When moving to the position for being close to piston cap 42, since the suction inside compressor is more than the elastic force of emergency stop spring 44, at this moment sealing is pushed up
Gap is formed between 41 and upper cover body O-ring 7, gap to be in communication with the outside inside air compressor, be realized by gap
The micro air inlet of compressor, to ensure the oil cycle inside air compressor.
Described in above structure, when air compressor needs emergency braking, solenoid valve 3 powers off, piston 43 and piston
The compressed gas in confined space between cap 42 is discharged by solenoid valve 3, is located at the resetting spring 45 of 4 bottom of cavity, is pushed
Piston 43 moves upwards, when the lower seal 432 on piston 43 crosses relief hole 6, the gas inside compressor and in pipeline
Body pressure is discharged by relief hole 6 through the hollow pipeline inside piston 43, piston cap 42 and sealing top 41, due in compressor
Suction is not present in portion, and resetting spring 45 is moved upwards with piston 43 and sealing top 41, and emergency stop spring 44 is further driven to seal
Top 41 moves upwards so that sealing top 41 is butted on upper cover body O-ring 7, to effectively prevent compressor oil spout.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications, above-mentioned vacation can also be made
If these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (4)
1. a kind of normally closed intake valve of air compressor, includes valve body, entering pressure hole, relief hole and position is provided on the valve body
Cavity in valve body is connected with gas pipeline interface in entering pressure hole, upper cover body has been bolted to connection on the valve body,
It is provided with air admission hole in the upper cover body, it is characterised in that：Piston is provided in the cavity, cavity hatch end is fixedly connected with
Piston cap, piston are slidably arranged relative to piston cap, further include having sealing to push up, and the sealing top cover is connected to piston, sealing top
The socket place of piston is provided with emergency stop spring, the bottom of piston and cavity is provided with resetting spring, and one end of resetting spring is supported
It is butted on piston in the cavity bottom other end, piston, piston cap and sealing top internal duct are disposed as hollow, the sealing top
Relative to the movable setting of piston and the air admission hole being resisted against in upper cover body is sealed, the entering pressure hole is communicated in piston and piston cap
Between the confined space that is formed, further include thering is solenoid valve and several sealing rings, the solenoid valve to be connected to valve outer surface, electricity
Magnet valve is both provided with sealing ring, institute between entering pressure hole and gas pipeline interface on the sealing top, piston and piston cap
It states and is provided with upper cover body O-ring on the air admission hole in upper cover body, the entering pressure hole is communicated in gas pipeline interface with relief hole,
It is separately positioned between sealing top and upper body lid O-ring when gas pressure intensity is discharged from solenoid valve, it is close when emergency shutdown
It binds and is close to be arranged between the lid O-ring of upper body.
2. the normally closed intake valve of a kind of air compressor according to claim 1, it is characterised in that：It is provided on the piston
Two grooves are respectively arranged with sealing ring and lower seal in the groove.
3. the normally closed intake valve of a kind of air compressor according to claim 1, it is characterised in that：The relief hole is set as
' ten ' shape, one of described relief hole hole are connected to cavity, hole corresponding thereto carried out by bolt it is closed, another
Hole is communicated in the external world, another hole sealed set corresponding thereto.
4. the normally closed intake valve of a kind of air compressor according to claim 1, it is characterised in that：It is provided on the valve body
It is vented adjustment hole for adjusting capacity, exhaust adjustment hole is communicated in relief hole, exhaust spiral shell is set in the exhaust adjustment hole
One end of bolt, the bleeder screw is set as coniform, and bleeder screw passes through relief hole and coniform one end is butted on relief hole
Inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820174625.3U CN207795521U (en) | 2018-01-25 | 2018-01-25 | A kind of normally closed intake valve of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820174625.3U CN207795521U (en) | 2018-01-25 | 2018-01-25 | A kind of normally closed intake valve of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795521U true CN207795521U (en) | 2018-08-31 |
Family
ID=63267724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820174625.3U Expired - Fee Related CN207795521U (en) | 2018-01-25 | 2018-01-25 | A kind of normally closed intake valve of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425832A (en) * | 2018-01-25 | 2018-08-21 | 温州曼哲科技有限公司 | A kind of normally closed intake valve of air compressor |
-
2018
- 2018-01-25 CN CN201820174625.3U patent/CN207795521U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425832A (en) * | 2018-01-25 | 2018-08-21 | 温州曼哲科技有限公司 | A kind of normally closed intake valve of air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20220125 |