CN208487248U - Pressure maintenance valve adjustment structure - Google Patents
Pressure maintenance valve adjustment structure Download PDFInfo
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- CN208487248U CN208487248U CN201821066121.6U CN201821066121U CN208487248U CN 208487248 U CN208487248 U CN 208487248U CN 201821066121 U CN201821066121 U CN 201821066121U CN 208487248 U CN208487248 U CN 208487248U
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Abstract
The utility model discloses a kind of pressure maintenance valve adjustment structures, including high-pressure gas circuit and pressure maintenance valve, pressure maintenance valve includes valve body, the lower end of valve body is equipped with air inlet B, the side of valve body is equipped with gas outlet B, air inlet B is connected to high-pressure gas circuit, further includes three-way magnetic valve, which has first interface, second interface and third interface；It offers on the roof of valve body and is connected by connecting tube B with first interface with its internal stomata being connected to, the stomata, second interface is communicated with high-pressure gas circuit, and third interface is communicated with ambient atmosphere.The pressure in pressure maintenance valve is controlled by solenoid valve, the open or close of pressure maintenance valve can be easily realized in purification system operational process, improve the controllability and the degree of automation of purification system, be conducive to improve purification efficiency.
Description
Technical field
The utility model belongs to gaseous mass testing equipment field, and in particular to a kind of pressure maintenance valve adjustment structure.
Background technique
Pressure maintenance valve is widely used in airline pressure adjusting, however existing pressure maintenance valve regulatory function is single,
Be difficult to meet greater demand, if compressed air is as the second largest power source, be widely used in all trades and professions, as device drives,
Material conveying, it is dry, blow material, purging, pneumatic instrument element, automatic control etc., however usually in compressed air manufacturing process,
Because of reasons such as compressor self structure and air qualities, certain oils and hydrocarbon are often contained in generated compressed air
The presence of class impurity, oils and hydrocarbon impurities, can to product quality, produce instruments, environment even operator's health generation hold
Harm long, therefore oil removal treatment would generally be carried out to compressed air, except generally use in oil-cleaning system pressure maintenance valve with
Prevent air return, but existing pressure maintenance valve is difficult to realize in normal work and is automatically closed or opens or its control knot
Structure is complicated, and pressure maintenance valve manufacturing cost is caused to increase, and difficulty increases.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of pressure maintenance valve adjustment structure, maintains pressure
Valve has check function simultaneously, be opened and closed it can also normally in the operating condition, and pressure control is automatic in raising high-pressure gas circuit
Change degree and controllability.
To achieve the above object, technical solutions of the utility model are as follows:
A kind of pressure maintenance valve adjustment structure, high-pressure gas circuit and pressure maintenance valve, the pressure maintenance valve include valve body, valve
The lower end of body is equipped with air inlet B, and the side of valve body is equipped with gas outlet B, and the air inlet B is connected to high-pressure gas circuit, and key exists
In: it further include three-way magnetic valve, which has first interface, second interface and third interface；
It is offered on the roof of the valve body and passes through connecting tube B and first interface with its internal stomata being connected to, the stomata
It is connected, second interface is communicated with high-pressure gas circuit, and third interface is communicated with ambient atmosphere；
When the valve block of the three-way magnetic valve closes third interface, pressure maintenance valve is in close state, and works as valve block
When second interface is closed, pressure maintenance valve is in the open state.
Using above scheme, automatically opening or being closed for pressure maintenance valve is realized by solenoid valve, not by high-pressure gas circuit
The influence of pressure makes pressure maintenance valve in addition to non-return and other effects to improve the degree of automation that pressure controls in gas circuit
Outside, it is also ensured that pressure in reaction system controls air velocity in reactor, prevents because air speed is excessive caused by pressure drop is excessive.
As preferred: the high-pressure gas circuit is equipped with heat exchanger, and the heat exchanger is equipped with air inlet A and gas outlet A, institute
State gas outlet A and be connected with air inlet B by connecting tube A, be additionally provided with solenoid valve interface on the heat exchanger, the solenoid valve interface and
Gas outlet A is communicated, and the second interface is connected by connecting tube C with solenoid valve interface.Using above scheme, by this adjustment structure
Applied to compressed air except in oil-cleaning system, automatically opening or being closed by solenoid valve realization pressure maintenance valve is exchanged
The gas exhaust piping up to standard of hot device is controlled, and is conducive to the controllability for improving purification system, while increasing the automatic of purification system
Change degree improves the production efficiency of purification system.
As preferred: being provided along its length installation cavity in the valve body, the stomata is connected to the installation cavity, installation
Intracavitary equipped with the plunger piston that can be slided along its length, plunger piston is directly adaptable with installation cavity, along it in installation cavity
Length direction is equipped with main spring, and the main spring both ends are separately fixed on plunger piston and valve body, and the plunger piston is close
One end of air inlet B is movably set with piston sheet, and piston sheet is greater than the bore of air inlet B.Using the above structure, pass through solenoid valve
It to change the pressure of plunger piston two sides, is slided further according to pressure official post plunger piston, to drive piston sheet is mobile to open or seal
Air inlet B is closed, structure is simple, convenient to carry out.
As preferred: being provided along its length mounting hole in the plunger piston, the piston sheet is in inverted " T " word
Type has extension, and the extension is embedded in installation cavity, and auxiliary spring, the pair bullet are provided along its length in installation cavity
The both ends of spring are separately fixed on the end and installation cavity wall of extension.When connecting tube A enter gas pressure it is lower when, pass through
The release of auxiliary spring can make piston sheet close air inlet B, and plunger piston does not move, to reach the mesh of non-return
's.
As preferred: the installation cavity wall is equipped with annular groove, the side of annular groove and gas outlet B close to one end of air inlet B
It communicates, the annular groove size and piston sheet are adapted, and the axial length of annular groove limits the sliding stroke of piston sheet.It uses with top
Case limits the sliding stroke of piston sheet, or extension excessive to main spring or auxiliary spring compression can be prevented from mounting hole
It inside exits, causes piston sheet sliding unreliable.
Compared with prior art, the utility model has the beneficial effects that
Using pressure maintenance valve adjustment structure provided by the utility model, by solenoid valve to the pressure in pressure maintenance valve
It is controlled, makes pressure maintenance valve in addition to non-return and other effects, can also preferably guarantee pressure in reaction system, control reaction
Air velocity in device prevents from causing to wash away to catalyst that may be present in gas circuit, making to urge because air speed is excessive caused by pressure drop is excessive
Agent is broken, dusting can easily realize the open or close of pressure maintenance valve when being applied to except oil-cleaning system, improves net
The controllability and the degree of automation of change system are conducive to improve purification efficiency, and by such solenoid valve control mode, can make this
Adjustment structure is not limited solely to air compression except in oil-cleaning system, it may also be used for drying system etc. is attached thereto accordingly
Be also not limited to heat exchanger, substantially increase the scope of application of this adjustment structure.
Detailed description of the invention
Fig. 1 is structural schematic diagram when pressure maintenance valve is in close state in the utility model；
Fig. 2 is pressure maintenance valve closed mode schematic diagram in Fig. 1；
Fig. 3 is structural schematic diagram when pressure maintenance valve is in the open state in the utility model；
Fig. 4 is pressure maintenance valve open state schematic diagram in Fig. 3；
Fig. 5 is in structural schematic diagram when non-return state for pressure maintenance valve in the utility model；
Fig. 6 is pressure maintenance valve non-return status diagram in Fig. 5；
Fig. 7 is heat exchanger right side structure schematic diagram；
Fig. 8 is heat exchanger left side structure schematic diagram.
Specific embodiment
The utility model is described in further detail with attached drawing with reference to embodiments.
It mainly include high-pressure gas circuit, pressure maintenance valve 2 and three referring to figs. 1 to pressure maintenance valve adjustment structure shown in Fig. 8
Three-way electromagnetic valve 4, the high-pressure gas circuit in the application are specifically described as follows so that compressed air is except oil-cleaning system gas circuit as an example:
High-pressure gas circuit is equipped with heat exchanger 1, as shown, the right side of heat exchanger 1 is equipped with air inlet A10 and gas outlet A11,
Wherein gas outlet A11 is located at 1 upper end of heat exchanger, and the lower end positioned at heat exchanger 1 of air inlet A10, in purification system, air inlet
Mouthful A10 usually connects oil expeller, makes to enter by the high-temperature gas of oil removing and carries out cooling and heat dissipation in heat exchanger 1, and gas outlet A11 connects
User or downstream processing unit are sent after pressure maintenance valve 2, the heat exchanger 1 in the present embodiment is integrated comprehensive type heat exchanger, therefore
Its right side is also provided with air compressor machine interface 13 and pre- heat outlet 14, can be entered by the compressed gas at normal temperature of air compressor machine in this way
It in heat exchanger 1, is re-fed into oil-removing purifier after preheated, air compressor machine interface 13 is connected to one pipe of formation with pre- heat outlet 14
Road, air inlet A10 and gas outlet A11 form another pipeline, and the pipeline of two processes is mutually indepedent in heat exchanger 1, but heat
Amount can be exchanged with each other.
The left side of heat exchanger 1 is equipped with solenoid valve interface 12, and the position of solenoid valve interface 12 corresponds to other side gas outlet A11's
Position, and communicated with the air inlet A10 and gas outlet A11 pipeline being connected to.
Three-way magnetic valve 4 has first interface 40, second interface 41 and third interface 42, interior to have valve block 43, passes through
Electromagnetic Control can make valve block 43 close second interface 41 or third interface 42, in the present embodiment.
Pressure maintenance valve 2 mainly includes valve body 20 in hollow structure in the application, has section rounded in valve body 20
Installation cavity 2a, installation cavity 2a is arranged along the length direction of valve body 20, the lower end of valve body 20 be equipped be connected to installation cavity 2a into
Port B21, the side of valve body 20 are equipped with the gas outlet B22 being connected to installation cavity 2a.
The stomata 23 being connected to installation cavity 2a is offered on the roof of valve body 20, is provided along its length in installation cavity 2a
Plunger piston 24,24 size of plunger piston and installation cavity 2a are adapted, and plunger piston 24 can be living along the length direction of installation cavity 2a
Dynamic, installation cavity 2a is separated into two variable chambers by plunger piston 24, and sealing is equipped between plunger piston 24 and installation cavity 2a
Structure is additionally provided with master in installation cavity 2a to ensure that two separation chamber pressures of plunger piston 24 are not connected to along its length
Spring 25,25 one end of main spring are connected with plunger piston 24 far from one end of air inlet B21, the upper end phase of the other end and valve body 20
Even, then when plunger piston 24 is mobile towards 23 one end of stomata, main spring 25 is in compressive state.
Plunger piston 24 is movably set with piston sheet 26 close to one end of air inlet B21, and piston sheet 26 is in disc-shaped structure,
Piston sheet 26 is arranged concentrically with plunger piston 24, as shown, being axially arranged with mounting hole 240 along it in plunger piston 24, is installed
The two sides of 24 length direction of plunger piston are run through in hole 240, and it is less than close to one end aperture of stomata 23 close to air inlet B21's
One end aperture is provided along its length auxiliary spring 27 in mounting hole 240, and 27 upper end of auxiliary spring is fixed on the side of mounting hole 240
On wall, the extension 260 that there is face mounting hole 240 to extend for the side of face plunger piston 24 on piston sheet 24, extension 260
It protrudes into mounting hole 240, end is connected with the lower end of auxiliary spring 27.
Installation cavity 2a inner wall close to one end of air inlet B21 be equipped with annular groove 28, annular groove 28 by installation cavity 2a inner wall surface
Radially recess is formed outward, and the radius size of annular groove 28 and piston sheet 26 are adapted, greater than the bore of air inlet B21,
The inner wall of axial sides and installation cavity 2a form step, and piston sheet 26 is located in annular groove 28, then by upper when piston sheet 26 slides
The limitation of lower two sides step, to determine the sliding stroke of piston sheet 26, the side of annular groove 28 is connected with gas outlet B22, such as
Shown in figure, when piston sheet 26 is located in annular groove 28 close to one end of air inlet B21, air inlet B21 can be completely enclosed, and worked as
When it is moved at one end towards stomata 23, it is gradually increased with the connection area of gas outlet B22.
Gas outlet A11 is connected by connecting tube A3 with air inlet B21 in the application, gas outlet B22 in purification system under
It swims equipment to be connected, stomata 23 is connected by connecting tube B5 with first interface 40, and second interface 41 passes through connecting tube C6 and heat exchanger 1
On solenoid valve interface 12 be connected, the air inlet A10 of heat exchanger 1 is connected with purification system middle and upper reaches equipment, three-way magnetic valve 4 company
It is connected to PLC, 43 closed position of valve block can control by PLC, third interface 42 is in open state, communicates with outside atmosphere.
With reference to Fig. 1 and Fig. 2, when being passed through compressed gas in heat exchanger 1, after PLC controls the closure third interface 42 of valve block 43,
Compressed gas can enter in connecting tube C6 and connecting tube A3 simultaneously, so that 24 upper and lower ends of plunger piston are isobaric pressure
Contracting gas, plunger piston 24 remain stationary, then pressure maintenance valve 2 can be made to be in close state, and main spring 25 is in the normal state, secondary bullet
Spring 27 is in compressive state.
With reference to Fig. 3 and Fig. 4, when PLC control valve block 43 is closed second interface 41, stomata 23 then by third interface 42 with
External normal pressure is connected, and one end of 24 face air inlet B21 of plunger piston is compressed gas, is in high pressure conditions, then can drive
Piston sheet 26 is mobile with one end where plunger piston 24 towards port 23, so that air inlet B21 and gas outlet B22 be made to connect
Logical, compressed gas can be exported from gas outlet B22, and main spring 25 and auxiliary spring 27 are in compressive state during this.
With reference to Fig. 5 and Fig. 6, in the course of work shown in Fig. 3, when the compressed gas air pressure entered in connecting tube A3 is varied down to
When being not enough to overcome the elastic restoring force of auxiliary spring 27, auxiliary spring 27 is in release conditions, and main spring 25 is in compressive state,
Piston sheet 26 is mobile towards the one end air inlet B21 under the effect of auxiliary spring 27, to air inlet B21 be blocked, to avoid outlet
The compressed gas reflux of the high pressure at the end mouth B22.
In actual application, it is not limited solely to the application of above-described embodiment, i.e., connection type is also not only
It is the connection type for heat exchanger 1, in use, ensure that air inlet B21 and second interface 41 are communicated with high-pressure gas circuit simultaneously, and
Stomata 23 is communicated with first interface 40, and the holding of third interface 42 is communicated with atmosphere, and the pressure tune to pressure maintenance valve 2 can be realized
Section is applicable in multi-purpose technique air-path control system.
Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this field
Art personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make
Multiple similar expressions, such transformation are each fallen within the protection scope of the utility model.
Claims (5)
1. a kind of pressure maintenance valve adjustment structure, including high-pressure gas circuit and pressure maintenance valve (2), pressure maintenance valve (2) packet
Include valve body (20), the lower end of valve body (20) is equipped with air inlet B (21), and the side of valve body (20) is equipped with gas outlet B (22), it is described into
Port B (21) is connected to high-pressure gas circuit, it is characterised in that: further includes three-way magnetic valve (4), which has the
One interface (40), second interface (41) and third interface (42)；
It is offered on the roof of the valve body (20) and passes through connecting tube B (5) with its internal stomata (23) being connected to, the stomata (23)
It is connected with first interface (40), second interface (41) is communicated with high-pressure gas circuit, and third interface (42) is communicated with ambient atmosphere；
When the valve block (43) of the three-way magnetic valve (4) closes third interface (42), pressure maintenance valve (2), which is in, closes shape
State, when valve block (43) closes second interface (41), pressure maintenance valve (2) is in the open state.
2. pressure maintenance valve adjustment structure according to claim 1, it is characterised in that: the high-pressure gas circuit is equipped with heat exchange
Device (1), the heat exchanger (1) are equipped with air inlet A (10) and gas outlet A (11), and the gas outlet A (11) passes through connecting tube A
(3) be connected with air inlet B (21), be additionally provided with solenoid valve interface (12) on the heat exchanger (1), the solenoid valve interface (12) with go out
Port A (11) is communicated, and the second interface (41) is connected by connecting tube C (6) with solenoid valve interface (12).
3. pressure maintenance valve adjustment structure according to claim 1, it is characterised in that: in the valve body (20) along its length
Direction is equipped with installation cavity (2a), and the stomata (23) is connected to the installation cavity (2a), and being equipped in installation cavity (2a) can be along its length
The plunger piston (24) of direction sliding, plunger piston (24) are directly adapted with installation cavity (2a), along its length in installation cavity (2a)
It spends direction and is equipped with main spring (25), main spring (25) both ends are separately fixed on plunger piston (24) and valve body (20), institute
It states plunger piston (24) to be movably set with piston sheet (26) close to the one end of air inlet B (21), piston sheet (26) is greater than air inlet B
(21) bore.
4. pressure maintenance valve adjustment structure according to claim 3, it is characterised in that: along it in the plunger piston (24)
Length direction is equipped with mounting hole (240), and the piston sheet (26) is in inverted " T " font, is had extension (260), described to prolong
Extending portion (260) is embedded in mounting hole (240), is provided along its length auxiliary spring (27), the auxiliary spring in mounting hole (240)
(27) both ends are separately fixed on the end and mounting hole (240) inner wall of extension (260).
5. pressure maintenance valve adjustment structure according to claim 3 or 4, it is characterised in that: installation cavity (2a) inner wall
One end close to air inlet B (21) is equipped with annular groove (28), and the side of annular groove (28) is communicated with gas outlet B (22), the annular groove
(28) size and piston sheet (26) are adapted, and the axial length of annular groove (28) limits the sliding stroke of piston sheet (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821066121.6U CN208487248U (en) | 2018-07-06 | 2018-07-06 | Pressure maintenance valve adjustment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821066121.6U CN208487248U (en) | 2018-07-06 | 2018-07-06 | Pressure maintenance valve adjustment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208487248U true CN208487248U (en) | 2019-02-12 |
Family
ID=65249601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821066121.6U Active CN208487248U (en) | 2018-07-06 | 2018-07-06 | Pressure maintenance valve adjustment structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208487248U (en) |
-
2018
- 2018-07-06 CN CN201821066121.6U patent/CN208487248U/en active Active
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 401336 4 4 Jiangxia Road, Nan'an District, Chongqing Patentee after: CHONGQING BAOSI PURIFICATION EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 401336 4 4 Jiangxia Road, Nan'an District, Chongqing Patentee before: CHONGQING BAOSI FLAMMABLE GAS ENGINEERING Co.,Ltd. |