CN108443545A - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN108443545A CN108443545A CN201810404924.6A CN201810404924A CN108443545A CN 108443545 A CN108443545 A CN 108443545A CN 201810404924 A CN201810404924 A CN 201810404924A CN 108443545 A CN108443545 A CN 108443545A
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- CN
- China
- Prior art keywords
- valve
- spool
- core spring
- valve core
- spring seat
- 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.)
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000004992 fission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Safety Valves (AREA)
Abstract
The present invention provides safety valves, belong to hydraulic pressure or baric systerm technical field, safety valve includes valve body and the valve deck with valve body releasable connection, valve body matches to merge with valve bonnet seal is surrounded by valve chamber, the valve core spring of Opening pressure is provided in valve chamber equipped with spool and to spool, valve core spring seat is equipped in valve chamber, valve chamber cavity wall is equipped with for adjusting the position of valve core spring seat with the valve core spring seat adjustment structure of adjusting spool amount of spring compression.By the way that valve core spring seat is arranged in valve chamber, the adjustment to valve core spring decrement, and then the Opening pressure of regulation safety valve are realized under the premise of not destroying the sealing of valve body and valve deck, solve the problems, such as that safety valve adjustment Opening pressure is more difficult in the prior art.
Description
Technical field
The present invention relates to safety valves.
Background technology
Pressure system is more and more applied in the fields such as chemical industry, building, automobile, aerospace, to ensure to press
The use of the normal work of Force system, safety valve is essential.Safety valve is a kind of protective valve, when pressure medium is higher than
When allowing pressure value, safety valve automatically opens, and outside discharge medium, with the reduction of pressure medium, safety valve is re-closing off.
The patent of invention that Authorization Notice No. is CN101943283B, authorized announcement date is 2013.04.24 discloses a kind of double
With antivoid valve, including valve body and spool, valve body is equipped with and the first gas port and the second gas port that are connected in pipeline, spool packet
The first valve board assembly and the second valve board assembly are included, the first valve board assembly includes the first valve plate and valve core spring, is set on the first valve plate
It includes valve and shutter spring to have the pilot hole of venthole and the heart that is placed in one, valve assembly, and the center of the second valve plate, which is fixed, to be connected
It is connected to and is oriented to the guide post being slidably matched with pilot hole, when the pressure in pipeline is more than given pressure, the second valve plate overcomes valve
The power of core spring is lifted upwards, and gas in pipelines is made to be discharged from the second gas port through the first gas port；It is given when the pressure in pipeline is less than
When constant-pressure, the second valve plate overcomes the elastic force of the second biasing spring to move down, and makes to form gap between the first valve plate and the second valve plate,
Gas enters pipeline through the gap between venthole, two valve plates, the first gas port, to play the role of vacuum breaker.But according to not
Same applicable cases, the Opening pressure of required safety valve is different, therefore the dual-purpose vacuum safety valve can be by changing
Become the decrement of the first biasing spring to adjust the Opening pressure of the first valve plate, if by the sealing cover of the double-purpose vacuum safety valve
Plate is threaded in the purpose that adjustment spring decrement is realized on cylindrical shell, but required by seal cover board is just unable to reach
Sealing effect.
Invention content
The purpose of the present invention is to provide a kind of safety valves, relatively tired to solve safety valve adjustment Opening pressure in the prior art
Difficult problem.
To achieve the above object, the technical solution of safety valve of the present invention is：
Safety valve includes valve body and the valve deck with valve body releasable connection, and valve body matches to merge with valve bonnet seal is surrounded by valve chamber, valve chamber
The interior valve core spring that Opening pressure is provided equipped with spool and to spool, valve chamber is interior to be equipped with valve core spring seat, and valve chamber cavity wall is equipped with
For adjusting the position of valve core spring seat with the valve core spring seat adjustment structure of adjusting spool amount of spring compression.
The beneficial effects of the invention are as follows：By the way that valve core spring seat is arranged in valve chamber, the close of valve body and valve deck is not being destroyed
The adjustment to valve core spring decrement, and then the Opening pressure of regulation safety valve are realized under the premise of envelope, solve the prior art
The more difficult problem of middle safety valve adjustment Opening pressure.
Further, in order to realize that spool described in the bidirectional opening of the safety valve is equipped with opening direction and spool opening square
To opposite valve, the spool is equipped with pilot hole, and the valve is equipped with when valve is moved far from spool and pilot hole
It is oriented to the guide post being slidably matched, the guide post is equipped with shutter spring seat, is equipped with to work between shutter spring seat and spool
Door provides the shutter spring of Opening pressure, and the spool is equipped with for making fluid pushing tow valve so that valve is opened and communicating valve
The spool communication port of core both sides, guide post are equipped with for adjusting the position of shutter spring seat with governor valve amount of spring compression
Shutter spring seat adjustment structure, by the way that valve is arranged on spool, when the arbitrary entrance of the safety valve is as fluid inlet,
It can realize the function of safety valve.
Further, in order to avoid interference, the valve core spring seat is equipped with the guide post passed through for guide post and perforates,
When guide post active length is longer, guide post is perforated across guide post, avoids the interference of guide post and valve core spring adjustment block.
Further, for the convenience of adjusting, the shutter spring seat is equipped with threaded hole, the shutter spring seat adjusts knot
Structure is the guiding male screw being arranged in guide post with the threaded hole screw-thread fit of shutter spring seat, by rotating valve adjusting seat
The initial length for carrying out governor valve spring facilitates adjusting.
Further, for the convenience of adjusting, the valve core spring seat is equipped with spring base external screw thread, the valve core spring seat
Adjustment structure is that the valve chamber internal thread coordinated with spring base external screw thread is arranged in valve chamber cavity wall, and the valve core spring seat is equipped with
Valve core spring seat communication port for being connected to spool spring base both sides, by rotational valve core spring base come the first of adjusting spool spring
Beginning length facilitates adjusting.
Further, in order to facilitate the connection of valve body and valve deck, the valve body is equipped with the valve deck being threadedly coupled with valve deck and connects
Socket part, valve deck interconnecting piece are equipped with the valve body sealing structure with the sealing cooperation of the internal chamber wall of valve deck, and the valve core spring seat setting exists
It is easy to disassemble by the way of threaded connection on valve body, and the leakproofness that valve body sealing structure improves valve body and valve deck is set
Can, and valve core spring seat is arranged on valve body, avoid the interference of valve core spring seat and valve body sealing structure.
Further, in order to improve sealing effect, the valve chamber is equipped on the top pressure direction of valve core spring and spool
The spool ring-shaped step of block cooperation, the spool ring-shaped step are equipped with spool R surface seal structures, institute towards the side of spool
State the gasket being additionally provided on spool for when spool is closed with the sealing cooperation of spool R surface seal structures, the valve direction
The side of spool is equipped with for the valve R surface seal structures when valve is closed with gasket sealing cooperation, by making spool R
Surface seal structure and valve R surface seal structures share a gasket, simplify structure, improve sealing effect.
Further, in order to improve stability, the valve core spring seat include split settings valve core spring adjustment block and
Valve core spring coordinating block, the valve core spring coordinating block are hollow flange arrangement, and valve core spring coordinating block includes being used for and valve
The valve core spring seat supports section of core spring supporting cooperation and the valve core spring seat guide section for being oriented to cooperation with valve core spring, carry
Height avoids the rotational valve core spring when screwing valve body to the guidance capability of valve core spring.
Further, the excess compression of valve core spring, the spool are equipped with for being oriented to valve core spring in order to prevent
The valve core spring guide section of cooperation, the valve core spring guide section are oriented on the compression direction of valve core spring with valve core spring seat
Section block cooperation, the valve core spring guide section and/or valve core spring seat guide section are equipped with connection spool spring base guide section
Pass through spool bullet when valve core spring is compressed to a certain amount of with the guide section communication port inside and outside valve core spring guide section
Spring guide section and the cooperation of valve core spring seat guide section block avoid the excess compression of valve core spring.
Further, in order to improve stability, the peripheral surface of the spool, which has, leads when spool is acted with valve chamber cavity wall
To the spool guide section being slidably matched and with the spaced spool diversion section of valve chamber cavity wall, it is dynamic in spool by spool guide section
It is connected to spool both sides with the interval of valve chamber cavity wall when making while Pilot poppet and by spool Connectivity Section, improves stability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment 1 of the dual-purpose safe valve of the present invention；
Fig. 2 is the sectional view along line A-A of the present invention；
In figure：1 --- valve core spring coordinating block；2 --- O-ring seal；3 --- valve core spring；4 --- spool；5 --- elasticity
Gasket；6 --- spool R surface seal structures；7 --- second fluid entrance；8 --- valve body；9 --- first fluid entrance；
10 --- first entrance strainer；11 --- second entrance strainer；12 --- spool ring-shaped step；13 --- pilot hole；14——
Valve core spring guide section；15 --- guide section communication port；16 --- shutter spring seat；17 --- valve deck；18 --- valve core spring
Adjustment block；19 --- guide post is perforated；20 --- valve core spring seat communication port；21 --- valve；22 --- spool communication port；
23 --- shutter spring guide section；24 --- shutter spring；25 --- guide post；26 --- valve R surface seal structures；27——
Spool Connectivity Section；28 --- spool guide section.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the dual-purpose safe valve of the present invention, as shown in Figure 1 to Figure 2, dual-purpose safe valve include two fissions
The valve body 8 and valve deck 17 for being arranged and being threaded togather, valve body 8 and valve deck 17 surround valve chamber, distinguish on valve body 8 and valve deck 17
Equipped with the first fluid entrance 9 and second fluid entrance 7 being connected to valve chamber, the embodiment of the present invention is made for convenience further
Illustrate, therefore, the fluid inlet for defining valve body 8 is oriented a left side, and the fluid inlet for defining valve deck 17 is oriented the right side, but simultaneously
The applicable cases of the dual-purpose safe valve of the present invention are not defined, certainly, in other embodiments, the two of the dual-purpose safe valve
A fluid inlet can be arranged towards any direction.
It is vertically arranged equipped with one piece close to the side of second fluid entrance 7 in valve chamber and perpendicular to the spool of valve chamber side wall 4,
The peripheral surface of spool 4 includes two parts, and a portion is to be oriented to the spool being slidably matched with valve chamber cavity wall when spool 4 is acted
Guide section 28, another part are the spool Connectivity Section for being arranged and being connected to when spool 4 is opened 4 both sides of spool with valve chamber cavity wall interval
27, while the guiding sliding for realizing spool 4, ensure the company of 4 both sides of spool when spool 4 is opened by spool Connectivity Section 27
It is logical.The left side of spool 4 is equipped with the valve core spring guide section 14 that extends towards 9 direction of first fluid entrance, in the present embodiment
Valve core spring guide section 14 is hollow tubular structure, and valve core spring 3, valve are set on the peripheral surface of valve core spring guide section 14
14 left side of core spring guide section is equipped with valve core spring coordinating block 1, and valve core spring coordinating block 1 is hollow flange arrangement, including with
In the valve core spring seat supports section of support valve core spring 3 and for the valve core spring seat guide section of Pilot poppet spring 3, pass through valve
Core spring base supporting section and spool 4 clamp valve core spring 3 therebetween, and pass through valve core spring guide section 14 and spool bullet
The guiding role of spring abutment guide section avoids the axis direction of the deformation direction deviation valve core spring 3 of valve core spring 3.In actual conditions
In, the Opening pressure needs of safety valve are set according to actual conditions, therefore, in valve chamber are additionally provided with valve core spring adjustment block
18, the valve chamber side wall on valve body 8 is equipped with valve chamber internal thread, and the peripheral surface of valve core spring adjustment block 18 is equipped with and spiral shell in valve chamber
The spring base external screw thread of line screw-thread fit, the left side of the valve core spring seat supports section of valve core spring coordinating block 1 is in valve core spring 3
Elastic force effect under be fitted on the right side of valve core spring adjustment block 18, valve core spring adjustment block 18 is equipped with first fluid
The valve core spring seat communication port 20 that 9 side of entrance is connected to the hollow space of valve core spring coordinating block 1, by screwing valve core spring tune
The change of monoblock 18 spool 4 when spool 4 is closed arrives the spacing between the valve core spring seat supports section of valve core spring coordinating block 1, into
And change the initial compression amount of valve core spring 3 to adjust the Opening pressure of spool 4.Wherein, valve core spring adjustment block 18 and spool
Spring coordinating block 1 constitutes valve core spring seat, and the valve chamber internal thread of valve body 8 is constituted for adjusting the position of valve core spring seat to adjust
The valve core spring seat adjustment structure of the decrement of valve core spring 4.Certainly, in other embodiments, valve core spring seat adjustment structure
Or be arranged in valve core spring adjustment block 18 for the locking pin with the limit cooperation of valve chamber cavity wall, can also be other pad
Cushion block between valve core spring adjustment block 18 and valve core spring coordinating block 1 will be corresponded to when needing different Opening pressures
The cushion block pad of thickness is mounted between valve core spring adjustment block 18 and valve core spring coordinating block 1, to adjust the compression of valve core spring 3
Amount.
In the present embodiment, in order to make to close and reach between second fluid entrance 7 and spool Connectivity Section 27 when spool 4 is closed
To better seal effect, the valve chamber cavity wall close to the side of second fluid entrance 7 is equipped with spool ring-shaped step 12, spool ring
The annular surface on 12 right side of shape step is equipped with the spool R surface seal structures 6 towards spool 4, and the left side of spool 4, which is equipped with, to be embedded in
Elastic sealing gasket 5 in spool 4 makes spool R surface seal structures 6 be fitted in elastic sealing gasket 5 under the pushing tow of valve core spring 3
On, it realizes the sealing between spool R surface seal structures 6 and spool 4 and then cuts off the connection of 4 both sides of spool.
In the present embodiment, when second fluid entrance 7 is as valve body inlet, the pressure of fluid is born in the right side of spool 4,
When the pressure of fluid reaches the Opening pressure of spool 4, valve core spring 3 compresses, and spool 4 overcomes the thrust of valve core spring 3 along valve chamber
Inner wall Slideslip to the right makes sealing relationship between spool R surface seal structures 6 and elastic sealing gasket 5 release, and fluid is by spool company
The interval of logical section 27 and valve chamber side wall enters the annular region between the peripheral surface and valve chamber side wall of valve core spring guide section 14, into
And pass sequentially through the interval between valve core spring guide section 14 and valve core spring coordinating block 1, valve core spring seat communication port 20 and
One fluid inlet 9 flows out in valve chamber, when the Fluid pressure in 4 left side of spool is less than the Opening pressure of spool 4, the sealing of the faces spool R
Structure 6 contacts with elastic sealing gasket 5 and reseals cooperation, and cut-out second fluid entrance 7 is connected to first fluid entrance 9,
Realize the function of safety valve.But it is larger in the larger displacement for causing spool 4 of the Fluid pressure that the right side of spool 4 is born
When, valve core spring guide section 14 can be contacted with valve core spring seat guide section, and cut off the peripheral surface of valve core spring guide section 14 with
Annular region between valve chamber inner wall is connected to the hollow region of valve core spring guide section 14, therefore in the present embodiment, spool bullet
Spring guide section 14 is equipped with the guide section for being connected to inside and outside valve core spring guide section 14 and valve core spring seat guide section
Communication port 15, when valve core spring guide section 14 and valve core spring seat guide section contact, fluid by guide section communication port 15 into
Enter in the hollow region of valve core spring guide section 14 and by 9 exits valve body 8 of first fluid entrance.Certainly, in other implementations
Example in, can also the valve core spring seat guide section of valve core spring coordinating block 1 be arranged trepanning come be connected to valve core spring coordinating block 1 with
The hollow region and first fluid entrance 9 of valve core spring guide section 14.
In order to realize the function of bidirectional opening, it is additionally provided with and is arranged in spool 4 towards the side of second fluid entrance 7 in valve chamber
Valve 21, the left side of valve 21 is equipped with the guide post 25 extended towards left side, and spool 4 for guide post 25 equipped with passing through
And the pilot hole 13 being slidably matched is oriented to when valve 21 is moved relative to spool 4, it is equipped between shutter spring seat 16 and spool 4
Shutter spring 24, and shutter spring 24 and 25 concentric fits of guide post, the right side of spool 4 are equipped with for being oriented to shutter spring
24 23 shutter spring seat 16 of shutter spring guide section includes shutter spring seat guide section and use for being oriented to shutter spring 24
In the shutter spring seat supports section of support shutter spring 24, shutter spring 24 passes through shutter spring guide section 23 and shutter spring seat
The guiding of guide section avoids the offset of the deformation direction of shutter spring 24.It is additionally provided on spool 4 for connecting when valve 21 is opened
The spool communication port 22 of the hollow region and second fluid entrance 7 of logical valve core spring guide section 14, for convenience to safety valve
Opening pressure is adjusted, and shutter spring seat 16 is equipped with threaded hole, and guide post 25 is equipped with the screw thread with shutter spring seat 16
The guiding male screw of hole screw-thread fit changes the spool 4 when valve 21 and spool 4 are opposing stationary by screwing shutter spring seat 16
Spacing between shutter spring seat supports section, and then change the initial compression amount of shutter spring 24 to adjust the unlatching of valve 21
Pressure.Wherein, the guiding male screw in guide post 25 is constituted for adjusting the position of shutter spring seat 16 with governor valve spring
The shutter spring seat adjustment structure of 24 decrements.Certainly, in other embodiments, shutter spring seat adjustment structure may be to set
The locking pin for the limit cooperation with guide post 25 on shutter spring seat 16 is set, can also be that in addition pad is mounted in shutter spring
Cushion block in the shutter spring seat supports section of seat 16 or the right side of spool will be corresponding thick when needing different Opening pressures
The cushion block pad of degree mounted between the shutter spring seat supports section and shutter spring 24 or right side of shutter spring 24 and spool 4 it
Between, to adjust the decrement of shutter spring 24.
In the present embodiment, in order to make to close on the right side of second fluid entrance 7 and spool in valve 21 and opposing stationary spool 4
And reaching better seal effect, 21 left side of valve is equipped with valve R surface seal structures 26, and valve R surface seal structures 26 exist
It is fitted under the top pressure of shutter spring 24 on elastic sealing gasket 5 and is sealed with elastic sealing gasket 5 and coordinated, in valve 21 and spool
The connection between spool communication port 22 and second fluid entrance 7 is cut off when opposing stationary i.e. valve 21 is closed between 4.
In the present embodiment, when first fluid entrance 9 is as valve body inlet, fluid passes through in valve core spring adjustment block 18
Valve core spring seat communication port 20 enters the hollow region of valve core spring coordinating block 1 and valve core spring guide section 14, and passes through valve plate
Communication port 22 applies pressure to the left side of valve 21, when the pressure of fluid reaches the Opening pressure of valve 21, shutter spring 24
Compression, valve 21 overcome the thrust of shutter spring 24 along the Slideslip to the right of pilot hole 13, make valve R surface seal structures 26 and elasticity
Sealing relationship releases between gasket 5, and fluid passes through the gap between valve 21 and elastic sealing gasket 5 and second fluid entrance 7
It flows out in valve chamber, and since Fluid pressure is not born on the right side of spool 4, therefore spool R surface seal structures 6 and elastic sealing gasket 5
Sealing cooperation is kept, makes fluid can not be by being connected to second fluid entrance 7 on the right side of spool.Wait for the Fluid pressure in 21 left side of valve
Less than valve 21 Opening pressure when, valve R surface seal structures 26 contact with elastic sealing gasket 5 and reseal cooperation, cut-out
Second fluid entrance 7 is connected to first fluid entrance 9, realizes the function of safety valve.
In the present embodiment, first entrance strainer 10 and second is respectively equipped at first fluid entrance 9 and second fluid entrance 7
Inlet screen 11 prevents the impurity in fluid from entering in valve chamber.The peripheral surface of valve body 8 is equipped with valve body external screw thread, on valve deck 17
Equipped with valve deck internal thread, wherein it is valve deck interconnecting piece to have the externally threaded part of valve body on the peripheral surface of valve body 8, on valve body 8 with
The valve body sealing surface with the sealing cooperation of the internal chamber wall of valve deck 17, valve body sealing surface are additionally provided on the right side of the valve deck interconnecting piece of valve deck 17
It is also equipped with O-ring seal 2 between valve deck interconnecting piece, avoids the leakage of valve chamber, wherein O-ring seal 2 and valve body sealing surface
The valve body sealing structure with the sealing cooperation of the internal chamber wall of valve deck 17 is constituted, certainly, in other embodiments, valve body sealing structure
Can labyrinth seal be set on the right side of the valve deck interconnecting piece of valve body 8.
In the present embodiment, interfere in order to prevent, valve core spring adjustment block 18 is equipped with to pass through for guide post 25 and be led with evacuation
To the guide post of column 25 perforation 19, stability is improved.
The dual-purpose safe valve of the present invention can realize the function of bidirectional opening, no matter the dual-purpose safe valve is just being connect and reversal connection
The function of safety valve can be realized, also, this dual-purpose safe valve is also possible to prevent the state of the appearance negative pressure in pipeline, to pipeline
Play better protective effect.
Claims (10)
1. safety valve, it is characterised in that：Valve deck including valve body and with valve body releasable connection, valve body matches to merge with valve bonnet seal to be enclosed
At there is valve chamber, the valve core spring of Opening pressure is provided in valve chamber equipped with spool and to spool, valve core spring seat, valve are equipped in valve chamber
Chamber cavity wall is equipped with for adjusting the position of valve core spring seat with the valve core spring seat adjustment structure of adjusting spool amount of spring compression.
2. safety valve according to claim 1, it is characterised in that：The spool is equipped with opening direction and spool opening square
To opposite valve, the spool is equipped with pilot hole, and the valve is equipped with when valve is moved far from spool and pilot hole
It is oriented to the guide post being slidably matched, the guide post is equipped with shutter spring seat, is equipped with to work between shutter spring seat and spool
Door provides the shutter spring of Opening pressure, and the spool is equipped with for making fluid pushing tow valve so that valve is opened and communicating valve
The spool communication port of core both sides, guide post are equipped with for adjusting the position of shutter spring seat with governor valve amount of spring compression
Shutter spring seat adjustment structure.
3. safety valve according to claim 2, it is characterised in that：The shutter spring seat is equipped with threaded hole, the work
Door spring base adjustment structure is the guiding male screw being arranged in guide post with the threaded hole screw-thread fit of shutter spring seat.
4. safety valve according to claim 2, it is characterised in that：The valve core spring seat is equipped with for avoiding guide post
Guide post perforation.
5. according to the safety valve described in any one of claim 1-4, it is characterised in that：The valve core spring seat is equipped with spring
Seat external screw thread, the valve core spring seat adjustment structure is that spiral shell in the valve chamber coordinated with spring base external screw thread is arranged in valve chamber cavity wall
Line, the valve core spring seat are equipped with the valve core spring seat communication port for being connected to spool spring base both sides.
6. according to the safety valve described in any one of claim 1-4, it is characterised in that：The valve body is equipped with to be connected with valve deck screw thread
The valve deck interconnecting piece connect, valve deck interconnecting piece are equipped with the valve body sealing structure with the sealing cooperation of the internal chamber wall of valve deck, the spool bullet
Spring abutment is arranged on valve body.
7. according to the safety valve described in Claims 2 or 3 or 4, it is characterised in that：The valve chamber is equipped on the top of valve core spring
The spool ring-shaped step with the cooperation of spool block, the spool ring-shaped step on direction is pressed to be equipped with spool towards the side of spool
R surface seal structures are additionally provided on the spool for the sealing when spool is closed with the sealing cooperation of spool R surface seal structures
Pad, the valve are equipped with towards the side of spool and are sealed for the faces valve R when valve is closed with gasket sealing cooperation
Structure.
8. according to the safety valve described in any one of claim 1-4, it is characterised in that：The valve core spring seat is set including fission
The valve core spring adjustment block and valve core spring coordinating block set, the valve core spring coordinating block are hollow flange arrangement, spool bullet
Spring coordinating block include for valve core spring support cooperation valve core spring seat supports section and be used for and valve core spring be oriented to coordinate
Valve core spring seat guide section.
9. safety valve according to claim 8, it is characterised in that：The spool is equipped with for matching with valve core spring guiding
The valve core spring guide section of conjunction, the valve core spring guide section on the compression direction of valve core spring with valve core spring seat guide section
Block coordinates, the valve core spring guide section and/or valve core spring seat guide section be equipped with connection spool spring base guide section and
Guide section communication port inside and outside valve core spring guide section.
10. according to the safety valve described in any one of claim 1-4, it is characterised in that：The peripheral surface of the spool has
Be oriented to valve chamber cavity wall when spool acts the spool guide section that is slidably matched and with the spaced spool diversion section of valve chamber cavity wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404924.6A CN108443545A (en) | 2018-04-28 | 2018-04-28 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404924.6A CN108443545A (en) | 2018-04-28 | 2018-04-28 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443545A true CN108443545A (en) | 2018-08-24 |
Family
ID=63201967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810404924.6A Pending CN108443545A (en) | 2018-04-28 | 2018-04-28 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529638A (en) * | 2019-08-20 | 2019-12-03 | 王美娟 | A kind of two-stage pressure release direct-acting overflow valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691734A (en) * | 1985-05-21 | 1987-09-08 | Fort Vale Engineering Ltd. | Valve seals |
| US6964280B1 (en) * | 2002-04-03 | 2005-11-15 | Hydro-Gear Limited Partnership | Valve assembly for use in a hydraulic component |
| CN202132564U (en) * | 2011-07-07 | 2012-02-01 | 保一集团有限公司 | Combined type multifunctional safety valve |
| CN202302154U (en) * | 2011-09-29 | 2012-07-04 | 河南航天压力元件有限公司 | Bi-directional breather valve |
| CN203940063U (en) * | 2014-06-13 | 2014-11-12 | 陕西飞机工业（集团）有限公司 | A kind of aircraft fuel system adjustable bidirectional Safety valve |
| CN104864139A (en) * | 2015-02-06 | 2015-08-26 | 洛阳市西灵机电科技有限公司 | Air pressure regulating valve |
-
2018
- 2018-04-28 CN CN201810404924.6A patent/CN108443545A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691734A (en) * | 1985-05-21 | 1987-09-08 | Fort Vale Engineering Ltd. | Valve seals |
| US6964280B1 (en) * | 2002-04-03 | 2005-11-15 | Hydro-Gear Limited Partnership | Valve assembly for use in a hydraulic component |
| CN202132564U (en) * | 2011-07-07 | 2012-02-01 | 保一集团有限公司 | Combined type multifunctional safety valve |
| CN202302154U (en) * | 2011-09-29 | 2012-07-04 | 河南航天压力元件有限公司 | Bi-directional breather valve |
| CN203940063U (en) * | 2014-06-13 | 2014-11-12 | 陕西飞机工业（集团）有限公司 | A kind of aircraft fuel system adjustable bidirectional Safety valve |
| CN104864139A (en) * | 2015-02-06 | 2015-08-26 | 洛阳市西灵机电科技有限公司 | Air pressure regulating valve |
Non-Patent Citations (1)
| Title |
|---|
| 张萌，康红梅: "《液压与气压传动》", 31 August 2015, 华中科技大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529638A (en) * | 2019-08-20 | 2019-12-03 | 王美娟 | A kind of two-stage pressure release direct-acting overflow valve |
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