CN106382395A - Low water loss stop valve - Google Patents

Low water loss stop valve Download PDF

Info

Publication number
CN106382395A
CN106382395A CN201510458815.9A CN201510458815A CN106382395A CN 106382395 A CN106382395 A CN 106382395A CN 201510458815 A CN201510458815 A CN 201510458815A CN 106382395 A CN106382395 A CN 106382395A
Authority
CN
China
Prior art keywords
cover plate
guide rail
valve
limiting
low water
Prior art date
Application number
CN201510458815.9A
Other languages
Chinese (zh)
Other versions
CN106382395B (en
Inventor
胡玉平
韩安伟
叶茂乐
Original Assignee
安徽红星阀门有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 安徽红星阀门有限公司 filed Critical 安徽红星阀门有限公司
Priority to CN201510458815.9A priority Critical patent/CN106382395B/en
Publication of CN106382395A publication Critical patent/CN106382395A/en
Application granted granted Critical
Publication of CN106382395B publication Critical patent/CN106382395B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/03Check valves with guided rigid valve members with a hinged closure member
    • F16K15/033Check valves with guided rigid valve members with a hinged closure member spring-loaded
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2042Special features or arrangements of the sealing
    • F16K1/205Special features or arrangements of the sealing the sealing being arranged on the valve member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/44Details of seats or valve members of double-seat valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/03Check valves with guided rigid valve members with a hinged closure member
    • F16K15/035Check valves with guided rigid valve members with a hinged closure member with a plurality of valve members

Abstract

The invention discloses a low water loss stop valve to prevent fluid backflow and reduce pressure loss. The stop valve comprises a hollow valve body and a valve core assembly disposed in the valve body, wherein the valve core assembly is formed by a valve seat fixing the valve body, a cover plate installed on the valve seat and a guide rail; the cover plate and the guide rail are respectively arranged on the valve seat via pin rolls; the cover plate and the guide rail can rotate from a close position to an open position along respective pin rolls in a vertical direction; the cover plate is engaged with the guide rail during the rotation; the valve core assembly further comprises a reset spring with one end fixed on the valve seat and enabling the guide rail and the cover plate to return from the opening position to the close position; the cover plate is provided with a guide slot spacing the guide rail; when the cover plate rotates to the open position, the guide rail is clamped by the guide slot, so resilience force of the reset spring can be offset and resistance to fluid by the cover plate can be reduced.

Description

Low water damages check-valves

【Technical field】

The present invention relates to a kind of check-valves preventing reverse flow of fluids, more particularly, to a kind of check-valves reducing fluid pressure loss.

【Background technology】

2012 Year 12 Month 12 The Chinese utility model patent the of day bulletin CN202597798 Number and 2003 Year 1 Month 7 The U.S. Patent No. that day is announced US6502598 Number all disclose a kind of check valve structure preventing liquid from flowing backwards, be mounted with the former valve body one by torque spring against flap, under the pushing of Fluid pressure, flap is opened permission fluid and is flowed towards predetermined direction, when Fluid pressure is gradually reduced or fluid flow direction changes, torque spring closes flap so that fluid cannot pass through.Equally it is mounted with flap, except for the difference that in order to prevent flap from rotating excessively, there is provided a guid arm in the valve body of the latter , Technical problem to be solved remains and prevents reverse flow of fluids.On the other hand although US6502598 Do not disclose how flap closes in detail, but flap resets to detent position it is necessary to have a restoring force, fluid overcomes the restoring force of flap clearly unescapable when flap, and therefore, above-mentioned prior art all has the larger defect of fluid pressure loss after check-valves.

【Content of the invention】

The technical problem to be solved is to provide one kind not only can prevent fluid media (medium) from flowing backwards but also can make the less check-valves of the pressure loss.

For solving above-mentioned technical problem, the invention discloses technical scheme below:A kind of low water is provided to damage check-valves,It includes the valve body of hollow and is arranged on the core assembly in valve body,Described core assembly includes the valve seat being fixed on valve body、It is installed on the cover plate on valve seat and guide rail,Described cover plate and guide rail are installed on valve seat by bearing pin respectively,Described cover plate and guide rail can turn to release position along respective bearing pin in the vertical direction from make position respectively,Keep engaging with guide rail when described cover plate rotates,Described core assembly also includes one end and is fixed on valve seat making guide rail and cover plate return to the back-moving spring of make position from release position,Described cover plate is provided with the guide groove of limit guide rail,The end that described guide rail includes guiding the cover plate drive division rotating and be arranged on drive division is used for limiting the limiting section of cover plate slewing area,Described guide groove has a diapire and the side wall extending in the same direction from diapire both sides,Described side wall is provided with the installing hole of lateral recesses,In the hole is installed and is sequentially installed with compression spring and place kick,When described cover plate turns to release position,Described place kick is held on guide rail under the pushing of compression spring.

Further, described installation in the hole is provided with adjustment bolt, and adjustment bolt and place kick are respectively arranged on the two ends of compression spring, and adjustment bolt is used for the elastic force controlling the depth of installing hole and then controlling compression spring.

Further, the limiting section of described guide rail is provided with the depressed part housing place kick, and when release position, described place kick is contained in depressed part described cover plate at least in part.

Further, the end in the self-driven portion of described limiting section extends towards cover plate direction, and the drive division of described guide rail is constituted with limiting section L Shape.

Further, described back-moving spring one end is fixed on valve seat, and the other end is fixed on guide rail.

Further, described cover plate is circle, and described core assembly also includes being arranged on the caulking gum of cover plate perimeter, and described caulking gum covers the periphery of valve seat at least in part.

Further, it is additionally provided with roller bearing in described guide groove, guide rail turns to described limiting section during release position and is located between roller bearing and diapire.

Further, the drive division of described guide rail and limiting section are circular arc, and guide rail is turned to the whole process of release position from make position and contacted with roller bearing all the time..

Compared to prior art, the low water damage check-valves meeting the present invention both can prevent fluid media (medium) from flowing backwards, and the fluid pressure loss that again can flow through is reduced to less.

【Brief description】

Figure 1 It is the axonometric chart of the low water damage check-valves meeting the present invention.

Figure 2 It is figure 1 Shown low water damages check-valves phantom in the close position.

Figure 3 It is figure 1 Shown low water damages the phantom that check-valves are in release position.

Figure 4 It is figure 3 The axonometric chart of the second shown core assembly.

Figure 5 It is figure 4 The exploded view of the second shown core assembly.

Figure 6 It is figure 5 The second shown core assembly A The partial enlarged drawing in region.

Figure 7 It is figure 4 The side view of shown core assembly second embodiment.

Figure 8 It is figure 7 Shown core assembly B The partial sectional view in region.

Figure 9 It is figure 4 The side view of shown core assembly 3rd embodiment.

Figure 10 It is figure 9 Shown core assembly C The partial sectional view in region.

【Specific embodiment】

As figure 1-6 Shown, the present invention low water to be disclosed damages check-valves 1000 Including hollow, there is an entrance point 11 And a port of export 12 Valve body 100 , and it is arranged on valve body 100 The first interior core assembly 5 With the second core assembly 6 .Described first core assembly 5 With the second core assembly 6 By valve body 100 Flow direction along fluid is divided into entrance chamber successively 101 , adjustment chamber 103 And output cavity 102 , described entrance chamber 101 , adjustment chamber 103 And output cavity 102 On be separately installed with piezometer for testing pressure in each chamber 300 .Described low water damages check-valves 1000 Also include for installing the first core assembly 5 With the second core assembly 6 Afterwards by valve body 100 The valve gap of closing 200 , described valve gap 200 If by bolt stem 22 It is fixed on valve body 100 On.Described entrance point 11 It is provided with and outside input pipeline ( Not shown ) Connected import end flanges 112 , described import end flanges 112 It is provided with installing hole 1120 , similarly, the described port of export 12 On also be provided with outlet end flange 122 And installing hole ( Non- label ) , for installing outside output channel ( Not shown ) .

Described valve gap 200 It is provided with for installing piezometer 300 Through hole 201 , valve body 100 It is additionally provided with insertion respectively and enter chamber 101 And output cavity 102 Test pipeline 110 , and insertion adjustment chamber 103 Emptying device 400 .When the first core assembly 5 With the second core assembly 6 When closing respectively, described emptying device 400 For emptying adjustment chamber 103 In fluid so that enter chamber 101 And output cavity 102 Between formed air partition, to prevent from mutually polluting.Described test pipeline 110 For installing piezometer 300 .Preferably, each piezometer 300 With valve body 100 Between be provided with ball valve 310 Or other have the valve of Truncation, it is beneficial to replacing piezometer 300 When close test pipeline 110 Or through hole 201 , described ball valve 310 With test pipeline 110 Between be by transfer tube 320 It is interconnected.

Described first core assembly 5 Including being fixed on valve body 100 Interior valve seat 50 , pass through pin respectively ( Non- label ) It is installed on valve seat 50 On cover plate 51 And guide rail 52 .Described cover plate 51 And guide rail 52 Release position can be turned to rotating around respective pin from make position by the vertical direction.In present embodiment, described first core assembly 5 With the second core assembly 6 There is same structure, for avoiding repeating, select the second core assembly below 6 Emphasis describes, in addition, for convenience of understanding, low water hereinafter damages check-valves 1000 Unified abbreviation check-valves 1000 .

Described second core assembly 6 Including being fixed on valve body 100 Interior valve seat 60 , be installed on valve seat 60 On cover plate 61 And guide rail 62 , described cover plate 61 And guide rail 62 Pass through bearing pin respectively 601 With bearing pin 602 It is attached to valve seat 60 On, described cover plate 61 Can be along bearing pin 601 In the vertical direction turns to release position in the counterclockwise direction from make position, described guide rail 62 Can be along bearing pin 602 In the vertical direction is rotated in the clockwise direction release position from make position.Described cover plate 61 For circular it is preferable that described second core assembly 6 Also include being arranged on cover plate 61 The caulking gum of periphery ( Not shown ) , described caulking gum at least partially covers over valve seat 60 Periphery.Described cover plate 61 During rotation and guide rail 62 Remain engagement, described second core assembly 6 Also include one end and be fixed on valve seat 60 The upper, other end is fixed on guide rail 62 On back-moving spring 63 .Described back-moving spring 63 Compress downwards guide rail 62 , guide rail can be made 62 It is pressed against cover plate 61 And then realize above-mentioned engage all the time, back-moving spring 63 Have and can make cover plate 61 The resilience force of make position is returned to after departing from release position.Fluid is from entrance point 11 Flow into and enter chamber 101 , give cover plate 61 Positive pressure, when this positive pressure is more than back-moving spring 63 When compressing power, cover plate 61 It is opened and rotate in the counterclockwise direction it is clear that the external force that provided of positive pressure from fluid drives cover plate 61 Drive guide rail during rotation simultaneously 62 Rotate, the guide rail when external force cancels 62 On back-moving spring 63 Drive guide rail 62 Rotate counterclockwise and order about cover plate 61 Rotate clockwise and be eventually returned to make position.

Wherein, described cover plate 61 It is provided with limit guide rail 62 Guide groove 610 , described guide rail 62 Including guiding cover plate 61 The drive division rotating 621 And self-driven portion is away from bearing pin 602 One end towards cover plate 61 The limiting section protruding 622 , described guide rail 62 Drive division 621 With limiting section 622 Generally comprise L Shape, limiting section 622 Cover plate can be hooked 61 To prevent cover plate 61 Inordinate rotation.Described limiting section 622 Including near the axial inner side of pin 6221 And away from the axial outside of pin 6222 , wherein, limiting section 622 Inner side 6221 And outside 6222 In the vertical direction be projected as continuously excessive circular arc.Described limiting section 622 In inner side 6221 And outside 6222 Between be provided with depressed part 6220 , tell depressed part 6220 Can be to be located at limiting section respectively 622 The pit of both sides or lateral direction penetrating guide rail 62 Through hole.Described guide groove 610 There is a diapire 611 And from diapire 611 The two side walls extending out in the same direction 612 , described side wall 612 It is provided with and extend transversely through side wall 612 The first installing hole 6120 And equally extend transversely through side wall 612 The second installing hole 6121 .

Described guide groove 610 Inside it is provided with and guide rail 62 Keep the roller bearing of contact 64 , described roller bearing 64 By alignment pin 641 Rotatably it is installed on side wall 612 On.Described cover plate 61 Roller bearing when make position turns to release position 64 From limiting section 622 Inner side 6221 Move to outside 6222 .Described roller bearing 64 With cover plate 61 On diapire 611 Between leave and can house limiting section 622 Space ( Non- label ) , work as roller bearing 64 Around limiting section 622 Contour motion to outside 6222 When, limiting section 622 It is stuck in cover plate 61 On, now guide rail 62 With cover plate 61 And valve seat 60 Between formed temporary stabilization triangle, in the case that the flow direction of fluid is constant, outside 6222 Withstand on roller bearing 64 On counteract back-moving spring 63 Resilience force so that fluid need not overcome back-moving spring 63 It is applied to cover plate 61 On elastic force, be equivalent to and increased the port of export 12 Outgoing fluid pressure.When becoming opposite direction flowing from fluid, easily trigger roller bearing 64 From outside 6222 On depart from inner side 6221 , now back-moving spring 63 Can be quickly by guide rail 62 And cover plate 61 Reset to make position.

Further, described guide groove 610 The second installing hole 6121 Interior within outer, it is sequentially installed with adjustment bolt 653 , compression spring 652 And place kick 651 , described place kick 651 Because more than the port inside the second installing hole ( Non- label ) And can only be partly from the second installing hole 6121 In expose to guide groove 610 , work as guide rail 62 With cover plate 61 When turning to release position respectively, described place kick 651 In compression spring 652 Pushing under at least in part against to limiting section 622 On depressed part 6220 In, place kick 651 With depressed part 6220 Contact surface be sphere, compression spring 652 Push limiting section from horizontal direction 622 Dynamics decomposable asymmetric choice net to horizontal direction, described adjustment bolt 653 With place kick 651 It is located at place kick respectively 651 Two ends, rotate adjustment bolt 653 With the second installing hole 6121 Cooperation depth can reach adjustment compression spring 652 It is applied to limiting section in the horizontal direction 622 Purpose, its size is to overcome back-moving spring 63 Order about limiting section 622 Flee from guide groove 610 Part resilience force or whole resilience force be advisable.In other embodiments, the second installing hole 6121 A side wall can be separately set in 612 On, equally can reach counteracting back-moving spring 63 The effect of resilience force.

In the above-described first embodiment, described first core assembly 5 Cover plate 51 With the second core assembly 6 Cover plate 61 When opening all towards the port of export 12 Direction rotate counterclockwise it is clear that applying on other multichannel valves the core assembly of same structure, then cover plate can be made according to actual needs to rotate towards identical or rightabout, all can realize the effect preventing from flowing backwards and reduce the pressure loss.

As figure 7 With figure 8 Shown, for meeting the second embodiment of the core assembly of the present invention, wherein said core assembly 7 Including being mountable to valve body 100 Interior valve seat 70 , by pin ( Not shown ) It is respectively arranged in valve seat 70 On cover plate 71 And guide rail 72 , unlike the embodiments above, in second embodiment, cover plate 72 Side wall 712 On be provided only with installation place kick 751 , compression spring 752 And adjustment bolt 753 Through hole ( Non- label ) , for first embodiment, second embodiment is only passed through to adjust compression spring 752 The guide rail to realize release position for the compressing force 72 And cover plate 71 Between relatively stable, now, even in compression spring 752 During the tension adjusted, back-moving spring 73 Needs could be by guide rail by the deboost of fluid 72 From place kick 751 On discharge, and then make be located at release position cover plate 81 Be subject to from back-moving spring 83 Resilience force be not transferred to the fluid of forward flow, reach and make the fluid pressure loss of forward flow be reduced to minimum purpose.

As figure 9 Extremely 10 Shown, meet in the third embodiment of the present invention, core assembly 8 Including being mountable to valve body 100 Interior valve seat 80 , by pin ( Not shown ) It is respectively arranged in valve seat 80 On cover plate 81 And guide rail 82 , it is arranged on guide rail 82 On back-moving spring 83 , and pass through bearing pin 841 It is arranged on cover plate 81 Side wall 812 On roller bearing 84 .Guide rail in 3rd embodiment 82 Positioned at release position when, its limiting section 822 It is stuck in cover plate 81 With roller bearing 84 Between gap 810 Among, by guide rail 82 Outside the curved profile of end ( Non- label ) Be arranged on side wall 812 On roller bearing 84 Between cooperation overcoming back-moving spring 83 Resilience force, and then make be located at release position cover plate 81 Be subject to from back-moving spring 83 Resilience force be not transferred to the fluid of forward flow, equally can realize making the fluid pressure loss of forward flow be reduced to minimum purpose.

In the above-described embodiments, when flowing through check-valves 1000 Fluid change flow direction to from the port of export 12 Enter fashionable, the first core assembly 5 Lid 51 Will be prior to the second core assembly 6 Lid 61 Close, therefore guide rail 52 Design length selects to be shorter than guide rail 62 It is meant that lid 51 The angle rotating is allowed to be less than lid 61 Rotary angle.Work as lid 61 And lid 51 When being in make position, emptying device can be opened 400 Release is from the port of export 12 Flow backwards and enter adjustment chamber 103 In liquid.Obviously, can be adjusted to as needed when entrance chamber 101 In Fluid pressure with adjustment chamber 103 Between pressure differential be less than a certain numerical value when, the first core assembly 5 Back-moving spring ( Not shown ) It is automatically switched off lid 51 ;Similarly, adjust compression spring 652 Dynamics so that adjustment chamber 103 In Fluid pressure and output cavity 102 Between pressure differential be less than a certain particular value when, cover plate 61 It is automatically switched off.Due to guide groove 610 To limiting section 622 Clamping effect counteract the resilience force of some or all of back-moving spring, in a disguised form increased that fluid needs to overcome from lid 61 Resistance, therefore, meet the check-valves of the present invention 1000 Reverse flow of fluids can be prevented, the purpose of end Fluid pressure of increasing export can have been reached again.

Claims (8)

1. a kind of low water damages check-valves, it includes the valve body of hollow and is arranged on the core assembly in valve body, described core assembly includes the valve seat being fixed on valve body, it is installed on the cover plate on valve seat and guide rail, described cover plate and guide rail are installed on valve seat by bearing pin respectively, described cover plate and guide rail can turn to release position along respective bearing pin in the vertical direction from make position respectively, keep engaging with guide rail when described cover plate rotates, described core assembly also includes one end and is fixed on valve seat making guide rail and cover plate return to the back-moving spring of make position from release position, it is characterized in that:Described cover plate is provided with the guide groove limiting guide rail rotational motion direction, the end that described guide rail includes guiding the cover plate drive division rotating and be arranged on drive division is used for limiting the limiting section of cover plate slewing area, described guide groove has a diapire and a pair of sidewalls extending out in the same direction from diapire, described side wall is provided with the installing hole extending transversely through, the place kick that in the hole is provided with compression spring and locally exposes installing hole is installed, when described cover plate turns to release position, place kick is held on limiting section under the pushing of compression spring.
2. as claimed in claim 1 low water damage check-valves it is characterised in that:Described installation in the hole is additionally provided with adjustment bolt, and described adjustment bolt and place kick are respectively arranged on the two ends of compression spring, and adjustment bolt is used for the elastic force controlling the depth of installing hole and then controlling compression spring.
3. as claimed in claim 1 low water damage check-valves it is characterised in that:The limiting section of described guide rail is provided with the depressed part housing place kick, and when release position, described place kick is contained in depressed part described cover plate at least in part.
4. as claimed in claim 1 low water damage check-valves it is characterised in that:The end in the self-driven portion of described limiting section extends towards cover plate direction, and the drive division of described guide rail constitutes L-shaped with limiting section.
5. as claimed in claim 1 low water damage check-valves it is characterised in that:Described back-moving spring one end is fixed on valve seat, and the other end is fixed on guide rail.
6. as claimed in claim 1 low water damage check-valves it is characterised in that:Described cover plate is circle, and described core assembly also includes being arranged on the caulking gum of cover plate perimeter, and described caulking gum covers the periphery of valve seat at least in part.
7. the low water as described in any one of claim 1 to 6 damage check-valves it is characterised in that:It is additionally provided with roller bearing, guide rail turns to described limiting section during release position and is located between roller bearing and diapire in described guide groove.
8. as claimed in claim 1 low water damage check-valves it is characterised in that:The drive division of described guide rail and limiting section are arc, and guide rail keeps contacting with roller bearing during make position turns to release position.
CN201510458815.9A 2015-07-28 2015-07-28 Low water damages check-valves CN106382395B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510458815.9A CN106382395B (en) 2015-07-28 2015-07-28 Low water damages check-valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510458815.9A CN106382395B (en) 2015-07-28 2015-07-28 Low water damages check-valves

Publications (2)

Publication Number Publication Date
CN106382395A true CN106382395A (en) 2017-02-08
CN106382395B CN106382395B (en) 2018-08-28

Family

ID=57916301

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510458815.9A CN106382395B (en) 2015-07-28 2015-07-28 Low water damages check-valves

Country Status (1)

Country Link
CN (1) CN106382395B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2145541A1 (en) * 1971-09-09 1973-03-29 Ponndorf Maschinenfabrik Kg Device for rueckschlagsicherung for installations for the pneumatic conveyance of pulpy wet material, in particular from spent grains, in pipelines
US5855224A (en) * 1996-07-11 1999-01-05 Watts Investment Company Flapper check valve
CN202531921U (en) * 2012-01-12 2012-11-14 铜陵国方水暖科技有限责任公司 Check valve
CN203286058U (en) * 2013-04-19 2013-11-13 胡光荣 Sewage valve
CN204025786U (en) * 2014-05-13 2014-12-17 上海东方威尔阀门有限公司 A kind of full-bore energy saving check valve
CN104514942A (en) * 2014-07-12 2015-04-15 涂晶 Check valve device normally working on conveying pipeline for fluid with solid impurities

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2145541A1 (en) * 1971-09-09 1973-03-29 Ponndorf Maschinenfabrik Kg Device for rueckschlagsicherung for installations for the pneumatic conveyance of pulpy wet material, in particular from spent grains, in pipelines
US5855224A (en) * 1996-07-11 1999-01-05 Watts Investment Company Flapper check valve
CN202531921U (en) * 2012-01-12 2012-11-14 铜陵国方水暖科技有限责任公司 Check valve
CN203286058U (en) * 2013-04-19 2013-11-13 胡光荣 Sewage valve
CN204025786U (en) * 2014-05-13 2014-12-17 上海东方威尔阀门有限公司 A kind of full-bore energy saving check valve
CN104514942A (en) * 2014-07-12 2015-04-15 涂晶 Check valve device normally working on conveying pipeline for fluid with solid impurities

Also Published As

Publication number Publication date
CN106382395B (en) 2018-08-28

Similar Documents

Publication Publication Date Title
US3712578A (en) Controls for valves
US7726338B2 (en) Valve with ceramic discs
JP4771260B2 (en) Water control valve
US7025325B2 (en) Flow control valve
WO2003029705A3 (en) Cylindrical gate valve
US7419105B2 (en) Spray oscillating control apparatus for sprinklers
US7950624B2 (en) Water valve apparatus
JP5740558B2 (en) Valve device
BR0317850A (en) Disc to control fluid flow inside a valve, and valve
CA2797942A1 (en) Sleeve seal assembly and rotary valve having sleeve seal assembly
CA2421801A1 (en) Automatic valve assembly for a water cooler reservoir
US7490627B2 (en) Butterfly valve with water-filling function
CA2550524A1 (en) Coaxial valve
US20080011362A1 (en) Flow controller
WO2009101424A4 (en) Flow stop valve
CN203594824U (en) Valve module and valve actuator
US4015816A (en) Rotary plug valve
CN101922558B (en) Butterfly valve flow control device
US20060097214A1 (en) Metering ball valve and method of determining fluid flow therethrough
CA2604947A1 (en) Fluid flow control valve with composition seal
CN207246484U (en) A kind of water mixing valve easy to adjusting water temperature
AU2016277653A1 (en) Hemi-wedge verifiable shutoff valve
CN102203489A (en) Field removable bonnet assemblies for use with valves
CN101622487B (en) Rotatable wedge cartridge valve mechanism and method for assembly and disassembly
US6254060B1 (en) Gate assembly for a double disk gate valve

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant