CN206708477U - A kind of hard sealing pressure maintaining valve - Google Patents
A kind of hard sealing pressure maintaining valve Download PDFInfo
- Publication number
- CN206708477U CN206708477U CN201720284350.4U CN201720284350U CN206708477U CN 206708477 U CN206708477 U CN 206708477U CN 201720284350 U CN201720284350 U CN 201720284350U CN 206708477 U CN206708477 U CN 206708477U
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- CN
- China
- Prior art keywords
- valve
- suppression
- regulating bolt
- gland
- pressure maintaining
- 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
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Abstract
The utility model discloses a kind of hard sealing pressure maintaining valve, including valve body, valve seat, gland, valve rod, hollow regulating bolt, valve element and spring, gland is fixedly mounted on body top, regulating bolt is arranged on gland and extended to through gland in valve body, valve rod one end is inlaid in the hollow intracavitary of regulating bolt, spring is arranged in valve body, its one end is fixed by the first spring base with regulating bolt, the other end is fixed by second spring seat with valve rod, valve element is arranged on the valve rod other end, its side surface is provided with suppression face, valve seat is arranged on body base, its internal import for axially offering insertion, import end is provided with suppression chamfering.Compared with prior art, rational in infrastructure, processing and assembling are easy, all-metal valve element, all-metal valve seat can be used, valve element forms suppression face using revised equal percentage characteristics curve and straight line, has the advantages that regulation than big, extensive using medium, while valve service life is grown.
Description
Technical field
It the utility model is related to valve technology field, more particularly to a kind of hard sealing pressure maintaining valve.
Background technology
Pressure maintaining valve is mainly used in the stabilization of control downstream pressure, ensures that downstream pressure keeps within the specific limits, entering
In the case of mouth pressure is continually changing, outlet pressure is kept in setting range.At present, pressure maintaining valve is mainly using nonmetallic soft close
Envelope and switched architecture, valve Applicable temperature narrow range, corrosion-resistant, nonmetal structure short life and regulation are than small stability
Can be poor the problems such as, is protruded, and serious potential safety hazard is caused to system normal use.
Utility model content
The purpose of this utility model be in view of the shortcomings of the prior art and provide it is a kind of it is simple and reasonable, using metal
The pressure maintaining valve of hard sealing means, improves the scope of application of valve and the adjustable range of pressure, and safe service life.
Reach above-mentioned purpose, the utility model is achieved through the following technical solutions.
A kind of hard sealing pressure maintaining valve, including valve body, valve seat, gland, valve rod, hollow regulating bolt, valve element and spring, valve
Internal portion offers the shoulder hole of insertion, and side offers outlet, and gland is fixedly mounted on body top, and regulating bolt is arranged on
Extended on gland and through gland in valve body, valve rod one end is inlaid in the hollow intracavitary of regulating bolt, and spring is arranged on valve
In vivo, its one end is fixed by the first spring base with regulating bolt, and the other end is fixed by second spring seat with valve rod, valve element peace
Mounted in the valve rod other end, its side surface is provided with suppression face, and valve seat is arranged on body base, and its internal axial direction offers insertion
Import, import end are provided with suppression chamfering.Suppression face and suppression chamfering are engaged, and the valve after assembling is coordinated on valve element and valve seat
The regulation of door mechanism than it is big with have preferable stability.
Further, suppression inclined-plane and the head section that suppression face includes middle part are the suppression song of equal percentage characteristics curve
Face.The suppression section set on valve element, it ensure that the stability of low discharge regulation；Suppression curved surface on valve is will according to use
Ask, be corrected after equal percentage flow characteristic curve formed, improve the flow response characteristic of valve.Improve system pressure
Stability, reduce the probability of the system failure.
Further, suppression inclined-plane is consistent with the angle of inclination of suppression chamfering.The suppression chamfering of valve seat and the suppression of valve element
Inclined-plane forms sealing in no pressure.
Further, middle cavity axially opens up along regulating bolt, and valve rod is arranged on hollow intracavitary, and can be in hollow intracavitary
Axial movement.In the case of the flow pressure of change, compression shock second spring seat, valve rod is moved axially, compresses or loosens
To spring pressure, flow pressure is set to reach balance with spring pressure.
Further, regulating bolt is hexagon socket head cap screw.By the inner hexagon spanner hole at the top of regulating bolt, tune can be changed
The position of bolt is saved, and then adjusts the position of the first spring base, so as to control the size of spring force, adjusts the flow by valve
And pressure.
Further, valve element uses metal spool.
Further, valve seat uses metal seat valve.Using the valve element and valve seat of all-metal, the temperature for improving valve uses
Scope, it is corrosion-resistant, flushing resistance is good.By techniques such as metal surface modifications, the surface of valve element and valve seat is further improved by section
Hardness, so as to the service life of poppet.
Pressure maintaining valve of the present utility model is vertically-mounted, using the flow direction of low in and high out, when inlet pressure is higher than setting pressure
When, the upward equilibrant force that valve element is subject to increases, and valve element separates with valve seat, and import aperture increases, and carries out pressure releasing, inlet-pressure
Power reduces.Conversely, valve element aperture reduces, inlet pressure increase.Compared with prior art, rational in infrastructure, processing and assembling are easy,
Using all-metal valve element, all-metal valve seat, valve element forms suppression face using revised equal percentage characteristics curve and straight line, with
Valve seat is engaged, and has the advantages that regulation than big, extensive using medium, to meet the operating mode of different system pressure and flow system flow
Demand, while valve service life is grown.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is A areas partial structurtes enlarged drawing.
In figure, 1, valve body；2nd, valve seat；3rd, gland；4th, valve rod；5th, regulating bolt；6th, valve element；7th, spring；8th, export；9th,
One spring base；10th, second spring seat；11st, suppression face；12nd, import；13rd, suppression chamfering；14th, suppression inclined-plane；15th, suppression curved surface；
16th, middle cavity.
Embodiment
In order to further describe the utility model, the specific implementation of hard sealing pressure maintaining valve is expanded on further below in conjunction with the accompanying drawings
Mode, following examples be to it is of the present utility model explanation and the utility model is not limited to following examples.
The hard sealing pressure maintaining valve of one kind as shown in Figures 1 and 2, including valve body 1, valve seat 2, gland 3, valve rod 4, regulating bolt
5th, valve element 6 and spring 7.Wherein, the shoulder hole of insertion is offered inside valve body 1, side offers outlet 8, and gland 3 passes through screw thread
The top of valve body 1 is fixedly mounted on, regulating bolt 5 is arranged on gland 3 and extended to through gland 3 in valve body 1, regulating bolt 5
For hexagon socket head cap screw, regulating bolt 5, to be fixedly connected, can also be processed as one with gland 3.During regulating bolt 5 axially offers
Cavity 16, the insertion of the one end of valve rod 4 can move axially in the middle cavity 16 of regulating bolt 5 in middle cavity 16.
Spring 7 is arranged in valve body 1, and its one end is fixed by the first spring base 9 with regulating bolt 5, and the other end passes through second spring seat
10 are fixed with valve rod 4, and preferable second spring seat 10 is sealed with valve body 1, and spring 7 is arranged in the annular seal space, in the stream of change
Measure under pressure condition, compression shock second spring seat 10, move axially valve rod 4, compress or loosen to the pressure of spring 7, make stream
Amount pressure reaches balance with the pressure of spring 7.Valve element 6 uses metal spool, and it is fixedly mounted on the other end of valve rod 4 by screw,
Its side surface is provided with suppression face 11, suppression face 11 include positioned at the suppression inclined-plane 14 at the middle part of valve element 6 and positioned at the head of valve element 6,
Section is the suppression curved surface 15 of equal percentage characteristics curve.Valve seat 2 uses metal seat valve, and it is threadably secured installed in valve body
1 bottom, its internal import 8 for axially offering insertion, the end of import 8 is provided with suppression chamfering 13.Suppression inclined-plane 14 and suppression
The angle of inclination of chamfering 13 is consistent, the suppression chamfering 13 of valve seat 2 is formed with the suppression inclined-plane 14 of valve element 6 in no pressure close
Envelope.Suppression face 11 and suppression chamfering 13 are engaged, and increase valve element 6 and valve seat 2 is engaged the valve mechanism regulation ratio after assembling,
And there is preferable stability.
The suppression inclined-plane 14 set on valve element 6, ensure that the stability of low discharge regulation, and suppression curved surface 15 is according to use
It is required that, be corrected after equal percentage flow characteristic curve formed, improve the flow response characteristic of valve.Improve system pressure
Stability, reduce the probability of the system failure.
During pressure maintaining valve of the present utility model assembling, second spring seat 10, valve rod 4 and valve element 6 fit together after from valve body 1
Bottom loads, then valve seat 2 is threadably mounted at into the bottom of valve body 1, and spring 7 loads from the top of valve body 1, gland 3, the and of regulating bolt 5
It is put into after the assembling of first spring base 9 from top in valve body 1, the screw thread of gland 3 and valve body 1 is screwed.
It is vertically-mounted when using in systems, using the flow direction of low in and high out, when inlet pressure is higher than setting pressure, valve
The upward equilibrant force increase that core 6 is subject to, valve element separate with valve seat, and import aperture increases, and carry out pressure releasing, inlet pressure drop
It is low.Conversely, valve element aperture reduces, inlet pressure increase.Pressure maintaining valve of the present utility model is simple and reasonable, and processing and assembling are held
Easily, suppression is formed using revised equal percentage characteristics curve and straight line using all-metal valve element, all-metal valve seat, valve element 6
Face, there is regulation than big, extensive using medium, to meet the duty requirements of different system pressure and flow system flow, together
When valve service life length.
Obviously, above-mentioned embodiment of the present utility model is only intended to clearly illustrate the utility model example,
And it is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, stated upper
It can also be made other changes in different forms on the basis of bright.Here all embodiments can not be given thoroughly
Lift.It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
Protection domain row.
Claims (7)
1. a kind of hard sealing pressure maintaining valve, including valve body (1), valve seat (2), gland (3), valve rod (4), hollow regulating bolt (5),
Valve element (6) and spring (7), it is characterised in that valve inner offers the shoulder hole of insertion, and side offers outlet (8), gland
Body top is fixedly mounted on, regulating bolt is arranged on gland and extended to through gland in valve body, valve rod one end setting-in
In the middle cavity (16) of regulating bolt, spring is arranged in valve body, and its one end is consolidated by the first spring base (9) with regulating bolt
Fixed, the other end is fixed by second spring seat (10) with valve rod, and valve element is arranged on the valve rod other end, and its side surface is provided with suppression
Face (11), valve seat are arranged on body base, and its internal import (12) for axially offering insertion, import end is provided with suppression and fallen
Angle (13).
2. hard sealing pressure maintaining valve according to claim 1, it is characterised in that suppression face includes the suppression inclined-plane (14) at middle part
With the suppression curved surface (15) that head section is equal percentage characteristics curve.
3. hard sealing pressure maintaining valve according to claim 2, it is characterised in that suppression inclined-plane and the angle of inclination of suppression chamfering
Unanimously.
4. hard sealing pressure maintaining valve according to claim 1, it is characterised in that middle cavity axially opens up along regulating bolt, valve
Bar is arranged on hollow intracavitary, and can be moved axially in hollow intracavitary.
5. hard sealing pressure maintaining valve according to claim 1, it is characterised in that regulating bolt is hexagon socket head cap screw.
6. hard sealing pressure maintaining valve according to claim 1, it is characterised in that valve element uses metal spool.
7. hard sealing pressure maintaining valve according to claim 1, it is characterised in that valve seat uses metal seat valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284350.4U CN206708477U (en) | 2017-03-22 | 2017-03-22 | A kind of hard sealing pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284350.4U CN206708477U (en) | 2017-03-22 | 2017-03-22 | A kind of hard sealing pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206708477U true CN206708477U (en) | 2017-12-05 |
Family
ID=60469854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720284350.4U Expired - Fee Related CN206708477U (en) | 2017-03-22 | 2017-03-22 | A kind of hard sealing pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206708477U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594460A (en) * | 2019-09-09 | 2019-12-20 | 昆山海芯机电科技有限公司 | Hard-seal fuel oil back pressure valve of diesel engine |
| CN111911679A (en) * | 2020-08-12 | 2020-11-10 | 江西艾芬达暖通科技股份有限公司 | Preset braking state differential pressure balance temperature control valve |
| CN113294533A (en) * | 2021-06-18 | 2021-08-24 | 衢州市智能制造技术与装备研究院 | Pressure reducing valve |
-
2017
- 2017-03-22 CN CN201720284350.4U patent/CN206708477U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594460A (en) * | 2019-09-09 | 2019-12-20 | 昆山海芯机电科技有限公司 | Hard-seal fuel oil back pressure valve of diesel engine |
| CN111911679A (en) * | 2020-08-12 | 2020-11-10 | 江西艾芬达暖通科技股份有限公司 | Preset braking state differential pressure balance temperature control valve |
| CN113294533A (en) * | 2021-06-18 | 2021-08-24 | 衢州市智能制造技术与装备研究院 | Pressure reducing valve |
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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: 20171205 |