CN207333915U - One kind can carry highly sensitive pilot valve - Google Patents
One kind can carry highly sensitive pilot valve Download PDFInfo
- Publication number
- CN207333915U CN207333915U CN201720926993.4U CN201720926993U CN207333915U CN 207333915 U CN207333915 U CN 207333915U CN 201720926993 U CN201720926993 U CN 201720926993U CN 207333915 U CN207333915 U CN 207333915U
- Authority
- CN
- China
- Prior art keywords
- pilot valve
- upper cover
- diaphragm
- cover
- highly sensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 abstract description 5
- 229920001778 nylon Polymers 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses one kind can carry highly sensitive pilot valve, including upper cover and bottom cover, the upper cover upper end is provided with dustproof cover, the upper cover lower end is provided with bottom cover, and the upper cover side is fixedly connected with interface, and the upper cover opposite side is equipped with outflow chamber, the upper cover inner upper end is provided with bearing, the bearing lower end is provided with adjusting rod, is equipped with diaphragm below the adjusting rod, the diaphragm lower end is provided with spool.The utility model is due to improving pilot valve structure and form of springs, improve the sensing efficiency to outlet pressure change, improve the overall sensitivity of pilot valve, greatly reduce because upstream pressure changes, pressure divergence caused by the factors such as changes in flow rate, by varying throttle structure, streamline distribution can be effectively improved, greatly reduce noise, due to the flat diaphragm that diaphragm is nylon reinforcing rubber, can effectively strengthen the sealing structure of pilot valve, by equipped with dustproof cover, it can prevent dust from entering inside pilot valve, pilot valve will not be caused to damage.
Description
Technical field
A kind of pilot valve is the utility model is related to, more particularly to one kind can carry highly sensitive pilot valve.
Background technology
Pilot valve is made of valve body, lower Disc, mandril, vent connection, upper flap, spring and bleeder valve etc..Common pilot valve
There are constant pressure pilot valve, constant temperature pilot valve, electronic pilot valve, constant pressure pilot valve constant pressure pilot valve can be divided into positive permanent pilot valve and anti-permanent two kinds of pilot valve.Just
Permanent pilot valve is used for counterbalance valve, can be by the main aperture for readding inlet pressure control bound.When inlet pressure is high, pilot valve is opened, main valve
Also open；Pilot valve is opened greatly, and main valve is also opened greatly.Constant temperature pilot valve TSAlO type constant temperature pilot valves and its service condition in a device.Constant temperature is led
The thermometer bulb of valve is used for experiencing the temperature of controlled evaporator thermal expansion valve environment (air or liquid).When the temperature increases, pilot valve
Open greatly, main valve is also opened therewith greatly reduces, the evaporating pressure (temperature) of evaporator, so as to keep controlled temperature basicly stable.This
The operator of pilot valve can be controlled by thermoregulator, and make that pilot valve aperture becomes with temperature deviation is a constant temperature pilot valve.Such as by
Pressure regulator just becomes a constant pressure pilot valve to control.The length of mandril 5 can be changed by rotating adjusting screw 4, so as to by pilot valve
Aperture is adjusted.But most pilot valve feature is all relatively simple currently on the market, use also very not
Just, traditional pilot valve when in use, since overall leakproofness is not fine, can greatly reduce the service life of pilot valve, and
In use, some dusts are also had by adjusting rod to enter inside pilot valve, so can also influence the performance of pilot valve,
The sensing efficiency that most importantly traditional pilot valve changes outlet pressure does not change well, can reduce the sensitivity of pilot valve.
For this reason, it is proposed that one kind can carry highly sensitive pilot valve.
Utility model content
The main purpose of the utility model is that highly sensitive pilot valve can be carried by providing one kind, the utility model is due to changing
Into pilot valve structure and form of springs, the sensing efficiency to outlet pressure change is improved, improves the overall sensitivity of pilot valve,
Greatly reduce because upstream pressure changes, the pressure divergence caused by factor such as changes in flow rate, greatly improves the use of pilot valve
Performance, has good market prospects, by varying throttle structure, can be effectively improved streamline distribution, greatly reduce and make an uproar
Sound, does not interfere with normal work and the normal life of people, and practicality and applicability are greatly improved, since diaphragm is
The flat diaphragm of nylon reinforcing rubber, improves the deficiency of traditional diaphragm, can effectively strengthen the sealing structure of pilot valve, extends
The service life of pilot valve, avoids the waste of resource, by equipped with dustproof cover, in use, can prevent dust
Into inside pilot valve, pilot valve will not be caused to damage, while also can guarantee that the performance of pilot valve, simple in structure, functional,
It is adapted to produce in enormous quantities and uses, can effectively solves the problems, such as in background technology.
To achieve the above object, the technical solution that the utility model is taken is：
One kind can carry highly sensitive pilot valve, including upper cover and bottom cover, and the upper cover upper end is provided with dustproof cover, described
Upper cover lower end is provided with bottom cover, and the upper cover side is fixedly connected with interface, and the upper cover opposite side is equipped with outflow chamber, it is described on
Lid inner upper end is provided with bearing, and the bearing lower end is provided with adjusting rod, diaphragm, the diaphragm are equipped with below the adjusting rod
Lower end is provided with spool, and sealing ring is equipped with above the spool both sides, flap, the spool lower end are equipped with below the sealing ring
Surface is provided with spring.
Further, the adjusting rod is connected with bearing threads.
Further, the diaphragm is the flat diaphragm of nylon reinforcing rubber.
Further, the sealing ring is the sealing ring that nitrile rubber material makes.
Further, the upper cover is fixedly connected with bottom cover.
Compared with prior art, the utility model has the advantages that：
1st, the utility model improves and the sensing of outlet pressure change is imitated due to improving pilot valve structure and form of springs
Can, the overall sensitivity of pilot valve is improved, is greatly reduced because upstream pressure changes, the pressure caused by factor such as changes in flow rate is inclined
Difference, greatly improves the performance of pilot valve, has good market prospects.
2nd, the utility model can be effectively improved streamline distribution, greatly reduce noise, no by varying throttle structure
Influence whether normal work and the normal life of people, practicality and applicability are greatly improved.
3rd, the utility model improves the deficiency of traditional diaphragm, energy due to the flat diaphragm that diaphragm is nylon reinforcing rubber
The sealing structure of enough effectively enhancing pilot valves, extends the service life of pilot valve, avoids the waste of resource.
4th, the utility model by equipped with dustproof cover, in use, can prevent dust enter pilot valve inside, no
Pilot valve can be caused to damage, while also can guarantee that the performance of pilot valve, simple in structure, functional, is adapted to produce in enormous quantities
Use.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram that can carry highly sensitive pilot valve of the utility model.
Fig. 2 is a kind of cross-sectional view that can carry highly sensitive pilot valve of the utility model.
In figure：1st, upper cover；2nd, dustproof cover；3rd, bottom cover；4th, connector；5th, bearing；6th, spool；7th, adjusting rod；8th, diaphragm；9th, it is close
Seal；10th, flap；11st, spring；12nd, chamber is flowed out.
Embodiment
To make the technical means, creative features, achievable purpose and effectiveness that the utility model is realized easy to understand, below
With reference to embodiment, the utility model is expanded on further.
As shown in Figs. 1-2, one kind can carry highly sensitive pilot valve, including upper cover 1 and bottom cover 3, and 1 upper end of upper cover is set
Dustproof cover 2 is equipped with, 1 lower end of upper cover is provided with bottom cover 3, and 1 side of upper cover is fixedly connected with interface 4, and the upper cover 1 is another
Side is equipped with outflow chamber 12, and 1 inner upper end of upper cover is provided with bearing 5, and 5 lower end of bearing is provided with adjusting rod 7, described
The lower section of adjusting rod 7 is equipped with diaphragm 8, and the diaphragm lower end is provided with spool 6, sealing ring 9, institute are equipped with above 6 both sides of spool
State the lower section of sealing ring 9 and be equipped with flap 10,6 rear surface of spool is provided with spring 11.
Wherein, the adjusting rod 7 is threadedly coupled with bearing 5.
Wherein, the diaphragm 8 is the flat diaphragm of nylon reinforcing rubber.
Wherein, the sealing ring 9 is the sealing ring that nitrile rubber material makes.
Wherein, the upper cover 1 is fixedly connected with bottom cover 3.
It should be noted that the utility model can carry highly sensitive pilot valve for one kind, during work, pilot valve upper flap 10
It is closed, pilot valve lower Disc 10 is in opening.Pipeline medium enters the gas chamber above main valve clack by lower Disc
It is interior, close main valve clack.When pipe medium pressure is abnormal, when meeting or exceeding the set-pressure of setting, pilot valve lower Disc is being situated between
To be closed under the action of matter pressure, cut-out pipeline medium enters the passage above main valve clack, while pilot valve upper flap is jacked up by mandril,
I.e. pilot valve is opened, and the medium in main valve clack upper plenum is discharged rapidly by exhaust joint.Main valve clack is in lower dielectric pressure
It is instantaneous to open under forceful action, pipeline medium is largely discharged rapidly from the outlet of main valve, pipe medium pressure is returned to just
Normal operating pressure, ensures the safety of system.When pipeline pressure drops to about the 90% of the set-pressure of default, on pilot valve
Flap is closed under the action of the spring, while pilot valve lower Disc is open-top by mandril, and pipeline medium enters main valve clack by lower Disc
The gas chamber of top, main valve clack are closed under differential pressure action, ensure that the normal operation of system.
The advantages of basic principle and main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (5)
1. one kind can carry highly sensitive pilot valve, including upper cover (1) and bottom cover (3), it is characterised in that：On the upper cover (1)
End is provided with dustproof cover (2), and upper cover (1) lower end is provided with bottom cover (3), and upper cover (1) side is fixedly connected with interface
(4), upper cover (1) opposite side is equipped with outflow chamber (12), and upper cover (1) inner upper end is provided with bearing (5), the bearing
(5) lower end is provided with adjusting rod (7), is equipped with diaphragm (8) below the adjusting rod (7), the diaphragm lower end is provided with spool
(6), sealing ring (9) is equipped with above spool (6) both sides, flap (10), the spool are equipped with below the sealing ring (9)
(6) rear surface is provided with spring (11).
2. one kind according to claim 1 can carry highly sensitive pilot valve, it is characterised in that：The adjusting rod (7) with
Bearing (5) is threadedly coupled.
3. one kind according to claim 1 can carry highly sensitive pilot valve, it is characterised in that：The diaphragm (8) is Buddhist nun
The flat diaphragm of imperial reinforcing rubber.
4. one kind according to claim 1 can carry highly sensitive pilot valve, it is characterised in that：The sealing ring (9) is
The sealing ring that nitrile rubber material makes.
5. one kind according to claim 1 can carry highly sensitive pilot valve, it is characterised in that：The upper cover (1) and bottom
Lid (3) is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926993.4U CN207333915U (en) | 2017-07-28 | 2017-07-28 | One kind can carry highly sensitive pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926993.4U CN207333915U (en) | 2017-07-28 | 2017-07-28 | One kind can carry highly sensitive pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333915U true CN207333915U (en) | 2018-05-08 |
Family
ID=62378267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720926993.4U Expired - Fee Related CN207333915U (en) | 2017-07-28 | 2017-07-28 | One kind can carry highly sensitive pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333915U (en) |
-
2017
- 2017-07-28 CN CN201720926993.4U patent/CN207333915U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20180508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |