CN108571603A - It is a kind of to fix hinged check valve - Google Patents
It is a kind of to fix hinged check valve Download PDFInfo
- Publication number
- CN108571603A CN108571603A CN201710567497.9A CN201710567497A CN108571603A CN 108571603 A CN108571603 A CN 108571603A CN 201710567497 A CN201710567497 A CN 201710567497A CN 108571603 A CN108571603 A CN 108571603A
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- Prior art keywords
- outlet
- valve
- valve body
- hinged
- inlet
- Prior art date
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- Granted
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- 230000008676 import Effects 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000013011 mating Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 230000004308 accommodation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Hinged check valve is fixed the invention discloses a kind of, including pump head, the Outlet check valves and import check valve being connect with pump head it is characterized in that Outlet check valves are equipped with the outlet valve body being spirally connected with pump head, and position a hinged inlet and outlet with inlet and outlet channel by exporting valve body self structure；Import check valve includes the import valve body being spirally connected with pump head, and positions a hinged inlet and outlet with inlet and outlet channel by import valve body self structure；Hingedly inlet and outlet both ends of the surface are equipped with sealing device.It not only ensure that the performance of check valve, but also the hinged inlet and outlet with inlet and outlet runner made absolutely to be detached with valve body, and do not influence the sealing performance of check valve completely；Flexible and changeable various loose joints or firmly connector can be met, and the high-efficient homework of check valve installation and removal is completely secured；The arrangement of polytetrafluoroethylsealed sealed part makes product increase the accommodation of medium and temperature, to extend the service life of product.
Description
Technical field
The present invention relates to reciprocating pump technology, especially a kind of reciprocating pump or the other Related products for needing to configure check valve are solid
Fixed hinged check valve.
Background technology
The operation principle of check valve is almost the same, but is equipped with various structures shape according to different required function in place etc.
Formula, as patent publication No. be CN106567829A, a kind of adjustable lift check valve of micro reciprocating pump, including check valve assembly with
Lift adjusts component, and check valve assembly includes spool, and lift adjustment component is for controlling spool lift, and lift adjusts on component
Equipped with the scale for quantity control valve core lift.This structure makes the scale on compression bar and valve body by rotating adjusting nut
On reference line match, with realize it is quantitative, accurately adjust the unidirectional lift of a valve and work.For another example patent publication No. is
A kind of reciprocating pump disclosed in CN105822539A imports and exports check valve with combined type, including valve rod, be set in valve seat outside valve rod,
Feed liquor spool and drain spool；Feed liquor spool setting is in valve seat side, and the face that valve seat is contacted with feed liquor spool is liquid feed valve
Valve face；The setting of drain spool is in the valve seat other side, and the face that valve seat is contacted with drain spool is tapping valve valve face；It is set in valve seat
There are feed liquor runner and drain runner disconnected with each other, the feed liquor being connected to feed liquor runner is provided on the liquid feed valve valve face of valve seat
Mouthful, the tapping valve valve face of valve seat is equipped with the leakage fluid dram being connected to drain runner, contact valve face and row of the feed liquor spool with valve seat
At least one V-shaped cone valve face of contact valve face or spheric cone valve face in contact valve face of the liquid spool with valve seat, correspondingly, valve
At least one valve face is V-arrangement cone valve face or spheric cone valve face in liquid feed valve valve face and tapping valve valve face on seat.
And it is mainly by the spiral shell between valve body and pump head for the existing rectilinear one-way valve structures for reciprocating pump
Valve body is directly screwed on pump head by line pair, while being fastened valve body and pump head by locking nut, is passed through between valve body and pump head
The sealing ring sealing on locking nut is configured, inlet and outlet are provided on valve body, the connection with pipeline is imported and exported and generally uses
The connections such as screw thread, flange, when connecting in this way, valve body needs to dismantle whole pipeline in maintenance, and installation and removal are inconvenient, into
Outlet is extremely limited with the connection type of pipeline, and when some damage parts of check valve, a whole set of valve group all needs replacing, and safeguards
Cost is big, when using connecing firmly, maintenance cost bigger；And using seal with O ring for the adaptability of pumped (conveying) medium and temperature
Extremely limited, the service life of O-ring is also limited when high-pressure delivery medium.
Invention content
The purpose of the present invention is to solve the above problems, provide a kind of check valve that fixation reasonable for structure is hinged,
In the case of ensureing check valve performance, the installing and dismounting time is reduced, allows check valve that can possess more connection types, dropped
Low-maintenance cost extends sealing life.
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：It is a kind of to fix hinged list
To valve, including pump head, the Outlet check valves being connect with pump head and import check valve, it is characterized in that the Outlet check valves are equipped with
With the outlet valve body of pump head thread connection, and by export valve body self structure position one have inlet and outlet channel it is hinged into
Outlet；The import check valve includes the import valve body with pump head thread connection, and is positioned by import valve body self structure
One hinged inlet and outlet with inlet and outlet channel；The end flat of the hinged inlet and outlet is equipped with sealing device.
The technical program presets valve ball, valve seat and back pressure spring in outlet valve body, and utilizes bonnet and polytetrafluoroethylsealed sealed
A sealings are padded, a set of Outlet check valves component is formed；Equally default valve ball and valve seat, it is unidirectional to form a set of import in inlet valve body
Valve module.When Outlet check valves are installed, with inlet and outlet channel hinged inlet and outlet both ends of the surface setting it is polytetrafluoroethylsealed sealed pad into
Row sealing, Outlet check valves component is passed through and hingedly imports and exports intermediate throughholes, is then directly tightened on pump head, while pressing and cutting with scissors
Tap into outlet both ends sealing surface.With this condition, when Outlet check valves are dismantled, directly Outlet check valves component can be unloaded,
Without dismantling the pipeline that there are the hinged inlet and outlet in inlet and outlet channel and be attached thereto, only needed replacing when reaching replacement
The purpose of Outlet check valves component.Import check valve install when, equally hinged inlet and outlet both ends of the surface be arranged it is polytetrafluoroethylsealed sealed pad into
Row sealing, import check valve assembly is passed through and hingedly imports and exports intermediate throughholes, is then directly anchored to import check valve assembly
On pump head, while pressing and being hinged inlet and outlet both ends sealing surface；When dismounting, directly import check valve assembly can be unloaded, without
The pipeline dismantled hinged inlet and outlet and be attached thereto, only needs replacing the mesh of import check valve assembly when to reach replacement
's.
Preferably, be equipped with valve ball in outlet valve body in the Outlet check valves, valve ball be located at in outlet valve body
In the valve seat of hole cooperation；Valve seat is equipped with runner, the runner and runner and hinged disengaging in outlet valve body in valve ball shift motion
The runner being equipped in mouthful communicates.The Outlet check valves runner plays the role of one-way non-return by the displacement movement of valve ball.
Preferably, the import valve body in the import check valve has T-shaped structure, being equipped with valve seat in inlet valve body pacifies
Dress hole and the runner communicated with valve seat, the interior runner communicated equipped with valve ball moving hole and with hinged inlet and outlet of valve seat are described
Runner in valve seat constitutes valve ball work shift space；Import valve body, which passes through, hingedly imports and exports intermediate throughholes, one end and pump head spiral shell
Line couples, and the other end and hingedly inlet and outlet seal face assembly are hingedly imported and exported other end sealing surface and assembled with pump head.Inlet valve
Body constantly screws in pump head by screw thread, while pressing and being hinged the sealing surface at inlet and outlet both ends, and positioning hinged inlet and outlet with this installs
Position and the leakproofness that ensure that check valve.The import check valve runner plays one-way non-return by the displacement movement of valve ball and makees
With.
Preferably, the outlet valve body has T-shaped structure, be equipped in outlet valve body valve seat mounting hole and with valve seat phase
Logical runner, equipped with valve ball moving hole and with the hinged runner imported and exported and communicated in valve seat, the runner structure in the valve seat
At valve ball work shift space；Outlet valve body, which passes through, hingedly imports and exports intermediate throughholes, one end and pump head thread connection, the other end with
Hingedly inlet and outlet seal face assembly is hingedly imported and exported other end sealing surface and is assembled with pump head.It is continuous by screw thread to export valve body
Pump head is screwed in, while pressing and being hinged the sealing surface at inlet and outlet both ends, hinged inlet and outlet installation site is positioned with this and ensure that list
To the leakproofness of valve.Simple and effective T shapes pipe structure can limit the position of hinged inlet and outlet and ensure check valve completely
Normal work.Simple and effective T-shaped structure can limit the position of hinged inlet and outlet completely, and ensure that check valve works normally
Required leakproofness.
Preferably, valve ball one end in the outlet valve body is equipped with back pressure spring, one end of back pressure spring is fixed on
Bonnet end.Insufficient in system pressure, required pressure can be given by installing the back pressure spring, ensure check valve just
Often work；In the case where system pressure is enough, removing the back pressure spring also does not influence the normal work of check valve.
Preferably, the bonnet and outlet valve body thread connection, bonnet and outlet valve body hole assembled end are equipped with four
Fluorine gasket A.Sealing element uses tetrafluoro material, increases accommodation of the check valve to medium, temperature, to improve production
The service life of product.
Preferably, there is the import valve body in the import check valve T-shaped structure, hinged inlet and outlet to be located at inlet valve
Between body T-shaped structure big end medial surface and pump head end face.
Preferably, the transverse flow channels vertical with valve ball moving hole in valve seat are equipped in the inlet valve body, it is described
Transverse flow channels and hingedly inlet and outlet runner communicate.Compact-sized, runner is reasonable.
Preferably, in the mating surface of the hinged inlet and outlet and pump head and hinged inlet and outlet with outlet valve body or into
It is equipped with polytetrafluoroethylsealed sealed pad B in the mating surface of mouth valve body.
Preferably, the hinged inlet and outlet have or screw thread or cutting ferrule or welding point or flange or yoke configurations shape
The interface of formula.The input and output that the hinged inlet and outlet of the design are suitable for various pipe fittings connect.
The beneficial effects of the invention are as follows：It not only ensure that the performance of check valve, but also make with inlet and outlet runner
Hinged inlet and outlet are absolutely detached with valve body, and do not influence the sealing performance of check valve completely；Open hinged inlet and outlet are enterprising
The arrangement of outlet can meet flexible and changeable various loose joints or firmly connector, and the height of check valve installation and removal is completely secured
Operation is imitated, installation, dismounting are simple, greatly shorten maintenance man-hours, maintenance cost is low, highly practical；The arrangement of polytetrafluoroethylsealed sealed part makes
The adaptability of medium and temperature enhances, to extend the service life of product.
Description of the drawings
Fig. 1 is a kind of Outlet check valves portion structure schematic diagram of the present invention.
Fig. 2 is a kind of import check valve portion structure schematic diagram of the present invention.
In figure：1. bonnet, 2. polytetrafluoroethylsealed sealed pad A, 3. outlet valve bodies, 4. polytetrafluoroethylsealed sealed pad B, 5. hinged inlet and outlet,
6. back pressure spring, 7. valve seats, 8. valve balls, 9. pump heads, 10. import valve bodies.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
The present embodiment is a kind of to fix hinged check valve, is applied to the rectilinear check valve of reciprocating pump, including connect with pump head 9
Two kinds of the Outlet check valves and import check valve connect.
Wherein Outlet check valves are as shown in Figure 1, be equipped with the outlet valve body 3 being connect with 9 screw socket of pump head, and pass through and export valve body
3 self structures position a hinged inlet and outlet 5 with inlet and outlet channel, hingedly import and export 5 each surfacess of revolution and are equipped with sealing dress
It sets.
Specifically, the outlet valve body 3 in Outlet check valves is interior equipped with valve ball 8, valve ball 8 is located at and outlet 3 endoporus of valve body
In the valve seat 7 of cooperation.This Outlet check valves is double-valve-seat 7 and 8 series structure of bivalve ball.It exports and is equipped with the peace of valve seat 7 in valve body 3
Dress hole and the runner communicated with valve seat 7, the interior runners communicated equipped with 8 moving hole of valve ball and with hinged inlet and outlet 5 of valve seat 7, should
Runner is external by hinged inlet and outlet 5.
Further, outlet valve body 3 has a T-shaped structure, is communicated equipped with 7 mounting hole of valve seat and with valve seat 7 in outlet valve body 3
Runner, valve seat 7 is interior to import and export 5 runners communicated, the runner structure in the valve seat 7 equipped with 8 moving hole of valve ball and with hinged
At 8 work shift space of valve ball；Outlet valve body 3, which passes through, hingedly imports and exports 5 intermediate throughholes, and one end and 9 thread connection of pump head are another
End is assembled with 5 seal faces are hingedly imported and exported, and is hingedly imported and exported 5 other end sealing surfaces and is assembled with pump head 9, outlet valve body 3 passes through
Screw thread constantly screws in pump head 9, while pressing and being hinged the sealing surface at 5 both ends of inlet and outlet, and 5 installation sites of hinged inlet and outlet are positioned with this
And it ensure that the leakproofness of check valve.
8 one end of valve ball exported in valve body 3 is equipped with back pressure spring 6, and one end of back pressure spring 6 is fixed on 1 end of bonnet, valve
Cap 1 is connected with outlet 3 one end inner hole thread of valve body, and polytetrafluoroethylsealed sealed pad A2 is arranged in bonnet 1 and 3 hole fitting surface of outlet valve body.
Hingedly inlet and outlet 5 and in the mating surface of pump head 9 and hingedly inlet and outlet 5 with export the mating surface of valve body 3 equipped with polytetrafluoroethylsealed sealed
Pad B4.
Import check valve is as shown in Fig. 2, include the import valve body 10 with 9 thread connection of pump head, and pass through import valve body 10
Self structure positions a hinged inlet and outlet 5 with inlet and outlet channel；It hingedly imports and exports 5 both ends of the surface and is equipped with sealing device.
Specifically, being equipped with runner valve seat 7 mounting hole and communicated with valve seat 7 in import valve body 10, it is equipped with valve ball 8 in valve seat 7 and moves
Hole and with hinged 5 runners that communicate of inlet and outlet, the runner in valve seat 7 constitutes 8 work shift space of valve ball.This import check valve
For double-valve-seat 7 and 8 series structure of bivalve ball.Further, the import valve body 10 in import check valve has T-shaped structure, hinged
Inlet and outlet 5 are between 9 end face of import valve body T-shaped structure big end medial surface and pump head.It is hinged to import and export in import check valve
5 is same with the endoporus coordinated with 10 transition of import valve body.It is equipped in import valve body 10 vertical with valve ball moving hole in valve seat 7
Transverse flow channels, transverse flow channels and hingedly inlet and outlet 5 runner communicate.Hingedly inlet and outlet 5 with it is in the mating surface of pump head 9 and hinged
Inlet and outlet 5 are designed with polytetrafluoroethylsealed sealed pad B4 in the mating surface of import valve body 10.
Hinged inlet and outlet 5 in the present embodiment meet appointing for the structure types such as screw thread, cutting ferrule, welding point, flange, clip
A kind of what connecting interface.
In addition, the big end of the T shape pipe structures of outlet valve body 3, import valve body 10, which has, meets the tool operations such as spanner
Gengon.
In use, when Outlet check valves are installed, polytetrafluoroethylsealed sealed pad B4 is loaded onto on 5 end flat grooves of hinged inlet and outlet,
The intermediate through hole for Outlet check valves component being passed through hingedly inlet and outlet 5, is then tightened on pump head 9.Outlet check valves are dismantled
When, directly Outlet check valves component can be unloaded, need not dismantle hinged inlet and outlet 5 and the pipeline that is attached thereto, when replacement
Only need replacing Outlet check valves component.
Equally, when import check valve is installed, polytetrafluoroethylsealed sealed pad B is loaded onto on the end flat groove of hinged inlet and outlet 5, it will
Import check valve assembly passes through and hingedly imports and exports 5 intermediate throughholes, and then import check valve assembly is directly tightened on pump head 9.
Above-described embodiment is the description of the invention, is not limitation of the invention, any simple transformation to the present invention
Structure, method afterwards etc. all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of fixing hinged check valve, including pump head（9）, the Outlet check valves and import check valve being connect with pump head,
It is characterized in that the Outlet check valves are equipped with the outlet valve body with pump head thread connection（3）, and by exporting valve body self structure
One hinged inlet and outlet with inlet and outlet channel of positioning（5）；The import check valve include with pump head thread connection into
Mouth valve body（10）, and a hinged inlet and outlet with inlet and outlet channel are positioned by import valve body self structure（5）；Described
Hinged inlet and outlet（5）Both ends of the surface be equipped with sealing device.
2. a kind of hinged check valve is fixed according to claim 1, it is characterised in that in the Outlet check valves
Export valve body（3）It is interior to be equipped with valve ball（8）, valve ball is positioned at the valve seat with outlet valve body inner bore cooperation（7）It is interior；Valve seat is moved in valve ball
Runner, the runner and runner and hinged inlet and outlet in outlet valve body are equipped in stroke（5）The runner being inside equipped with communicates.
3. it is according to claim 1 it is a kind of fixing hinged check valve, it is characterized in that in the import check valve into
Mouth valve body（10）With T-shaped structure, equipped with valve seat mounting hole and the runner communicated with valve seat in inlet valve body, valve seat is interior to be equipped with valve
Ball moving hole and with hinged inlet and outlet（5）The runner communicated, the runner in the valve seat constitute valve ball work shift space；
Import valve body passes through and hingedly imports and exports intermediate throughholes, one end and pump head thread connection, the other end and hingedly imports and exports seal face
Other end sealing surface and pump head are hingedly imported and exported in assembly（9）Assembly.
4. it is according to claim 1 it is a kind of fixing hinged check valve, it is characterized in that the outlet valve body（3）With T
Shape structure, equipped with valve seat mounting hole and the runner communicated with valve seat in outlet valve body, be equipped in valve seat valve ball moving hole and with
Hinged inlet and outlet（5）The runner communicated, the runner in the valve seat constitute valve ball work shift space；It exports valve body and passes through hinge
Tap into outlet intermediate throughholes, one end and pump head（7）Thread connection, the other end and hingedly inlet and outlet seal face assembly, it is hinged into
Other end sealing surface is exported to assemble with pump head.
5. it is according to claim 1 it is a kind of fixing hinged check valve, it is characterized in that the outlet valve body（3）Interior valve
Ball（8）One end is equipped with back pressure spring（6）, one end of back pressure spring is fixed on bonnet（1）End.
6. it is according to claim 5 it is a kind of fixing hinged check valve, it is characterized in that the bonnet（1）With outlet valve body
（3）Thread connection, bonnet and outlet valve body hole assembled end are equipped with polytetrafluoroethylsealed sealed pad A（2）.
7. it is according to claim 1 it is a kind of fixing hinged check valve, it is characterized in that in the import check valve into
Mouth valve body（10）It is hinged to import and export with T-shaped structure（5）Positioned at import valve body T-shaped structure big end medial surface and pump head（9）End face
Between.
8. it is according to claim 7 it is a kind of fixing hinged check valve, it is characterized in that the import valve body（10）Inside set
There are the transverse flow channels vertical with valve ball moving hole in valve seat, the transverse flow channels and hinged inlet and outlet（5）Runner communicates.
9. a kind of according to claims 1 or 2 or 3 or 4 or 5 or 6 fixing hinged check valve, it is characterized in that the hinge
Tap into outlet（5）With pump head（9）Mating surface on and hinged inlet and outlet and outlet valve body（3）Or import valve body（10）Cooperation
Polytetrafluoroethylsealed sealed pad B is equipped on face（4）.
10. a kind of according to claims 1 or 2 or 3 or 4 or 5 or 6 fixing hinged check valve, it is characterized in that described
Hinged inlet and outlet（5）Have or the interface of screw thread or cutting ferrule or welding point or flange or yoke configurations form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567497.9A CN108571603B (en) | 2017-07-12 | 2017-07-12 | Fixed articulated check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710567497.9A CN108571603B (en) | 2017-07-12 | 2017-07-12 | Fixed articulated check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108571603A true CN108571603A (en) | 2018-09-25 |
| CN108571603B CN108571603B (en) | 2024-01-09 |
Family
ID=63576235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710567497.9A Active CN108571603B (en) | 2017-07-12 | 2017-07-12 | Fixed articulated check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108571603B (en) |
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| GB1202397A (en) * | 1967-11-06 | 1970-08-19 | Trw Inc | Improvements in or relating to valves |
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| CN108571603B (en) | 2024-01-09 |
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