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CN105715835A - Check valve - Google Patents

Check valve Download PDF

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Publication number
CN105715835A
CN105715835A CN201610276764.2A CN201610276764A CN105715835A CN 105715835 A CN105715835 A CN 105715835A CN 201610276764 A CN201610276764 A CN 201610276764A CN 105715835 A CN105715835 A CN 105715835A
Authority
CN
China
Prior art keywords
spiral groove
valve
check
flexible sheets
external spiral
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.)
Pending
Application number
CN201610276764.2A
Other languages
Chinese (zh)
Inventor
潘豪杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201610276764.2A priority Critical patent/CN105715835A/en
Publication of CN105715835A publication Critical patent/CN105715835A/en
Pending legal-status Critical Current

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
    • F16K15/14Check valves with flexible valve members
    • F16K15/144Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering 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
    • B01D35/02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering 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
    • B01D35/16Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • 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
    • F16K25/00Details relating to contact between valve members and seats
    • 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
    • F16K47/00Means in valves for absorbing fluid energy
    • F16K47/02Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a check valve. The check valve comprises a valve body, a valve cover and a check component fixed into the valve body. The check component comprises a flexible piece and a body, the valve body is provided with a water inlet and a water outlet, and the body gradually shrinks from the water inlet to the water outlet; the flexible piece is in a ring shape, one end of the flexible piece is fixedly connected with the valve body, and the inner wall of the other end of the flexible piece is tightly attached to the side wall of the body; the outer wall of the flexible piece is in smoothing transition to the side wall of the body, and the side wall of the body is a conical curve face protruding outwards; the water inlet of the valve body is connected with a filtering pipe and a connecting opening with the inner diameter larger than the outer diameter of the filtering pipe; and the filtering pipe is located in an inner cavity of the connecting opening, and the filtering pipe is provided with a pipe body with the closed outer end. The check valve is simple in structure, large in positive circulation area, good in reverse sealing performance and free of collision and noise during sealing and has the filtering function.

Description

A kind of check-valves
Technical field
The present invention relates to a kind of valve, specifically a kind of check-valves.
Background technology
Metering water meter front end is commonly installed non-metering function when metering, non-water flow when leakage-preventing check valve realizes there are current.
The patent No. is: the patent document of ZL200720111885.8 " a kind of energy-conservation sensing Drop-proof valve " discloses a kind of energy-conservation sensing Drop-proof valve, including valve body, valve gap and spool, described spool includes the valve core being fixedly connected on valve body, valve core is a tube structure, valve core upper shed connects with water inlet, bottom valve core, sidewall is provided with the hole connected with outlet, the slide block that can slide up and down it is provided with inside valve core, slider side wall is provided with the intercommunicating pore corresponding with the hole on described valve core, is realized the switch of valve by skid.
But hole flow area that the check-valves in the prior art has the drawback that sidewall bottom valve core is little, cause that its flow is also little, it is impossible to meet the system demand to flow;The motion of slide block is not easily controlled, it is impossible to arrive zero leakage effect when reverse fluid flow and pressure are relatively low;During slide block movement, it is easy to produce collision with valve core, the noise of generation is relatively big and affects service life of valve;Check-valves does not have filtering function, and spool is fragile.
Summary of the invention
The technical problem to be solved be just to provide a kind of simple in construction, forward circulation area good seal performance big, reverse and seal time collisionless, noiselessness and have filtering function return valve.
Technical solution of the present invention is as follows:
A kind of check-valves, including valve body, valve gap and be fixed on the retaining element in valve body, described retaining element includes flexible sheets and body, described valve body is provided with water inlet and outlet, described body is gradually tapered up to outlet by water inlet, described flexible sheets is ring-type, and its one end is fixing with described valve body to be connected, and the inwall of the other end is close to the sidewall of described body;
The sidewall of the outer wall rounding off of described flexible sheets extremely described body;
The sidewall of described body is the conical surface of outwardly convex;
Described check-valves is additionally provided with the magnetic mechanism making described flexible sheets be drawn to described body;
Described magnetic mechanism includes the iron hoop being located within described flexible sheets wall body and the Magnet being located at described body interior;
Described iron hoop is located at the middle part of described flexible sheets;
Described body is embedded with connection axle, and described connection axle is fixing with described valve gap to be connected;
Described valve inleting water mouth is connected to filter tube and the internal diameter connector more than filter tube external diameter, described filter tube is arranged in the inner chamber of connector, described filter tube has the body of outer end closure, described tube wall has the external spiral groove with body for rounding post, described inboard wall of tube body has the inner spiral groove with body for rounding post, described external spiral groove and inner spiral groove are oppositely oriented, the groove depth of described external spiral groove and the groove depth sum of inner spiral groove more than the wall thickness of body to form the filter opening of rhombus on body.
Further: described external spiral groove is single thread groove, described inner spiral groove is multi-head spiral groove.
Further: described external spiral groove and inner spiral groove are Variable lead groove, body needs the helical pitch helical pitch more than the position that need not bend of crooked position.
Further: the revolver profile of described external spiral groove normal section profile and right wheel profile all tilt to homonymy.
Further: described external spiral groove normal section profile broadens gradually along the width of rebate of body radially direction external spiral groove from inside to outside.
Further: described connection axle is copper piece, described body is working of plastics.
The present invention compared with prior art has the advantage that when forward is through-flow, medium acts on flexible sheets and body, making flexible sheets wash open from body sidewall, medium flows through from the space between flexible sheets and body, and flow area is bigger, when reversely sealing, owing to the shape of cone shaped flexible sheet and body designs, flexible sheets is adsorbed on body, good sealing effect, and body and flexible sheets collisionless when sealing, noise will not be produced.And, valve inleting water mouth is connected to filter tube and the internal diameter connector more than filter tube external diameter, current can be filtered, spool is hardly damaged, and described filter tube has the following advantages relative to common filter tube: (1) filter tube has external spiral groove, and the current outside pipe are under pressure along external spiral groove helical flow, impurity is distributed outside tube wall more uniform, the utilization of filter opening and loss are more uniform, and add water and flow through the number of times of filtering holes, improve filter efficiency;(2) current inside and outside filter tube flow along inner spiral groove and external spiral groove respectively, collide at filter opening place each other such that it is able to impact by the impurity being blocked in outside filter opening, reach the purpose of filter tube self-cleaning, reduce cleaning cost;(3) current in filter tube form the uniform current of flow velocity along inner spiral groove helical flow, water one through filtering enters filter tube and is flowed along inner spiral groove by the guiding of current in inner spiral groove immediately, reach the effect of steady in-pipe flow, and the structure of external spiral groove to be single thread groove, inner spiral groove be multi-head spiral groove contributes to being scattered in different inner spiral grooves by the moisture through filtering, reduce further the water having just enter in body to the impact of water in pipe;(4) filter tube has inner spiral groove and external spiral groove, contribute to the bending of body, and electric-heating-wire-heating can be entered at external spiral groove inner disc when bending, reduce further the camber of bending, on the other hand, body needs the helical pitch helical pitch more than the position that need not bend of crooked position, reduces the probability that bending causes body to break;(5) external spiral groove and inner spiral groove are Variable lead groove, can realize controlling the function of water velocity inside and outside filter tube diverse location by setting the helical pitch of different parts;(6) the revolver profile of external spiral groove normal section profile and right wheel profile all tilt to homonymy, when ensureing can to make cutter vehicle to inner spiral groove and external spiral groove intersection by selection turning direction when turning inner spiral groove, lathe tool direct of travel and external spiral groove two side are all acutangulated by the direction on inside base, outside and avoid collapsing cutter, reduce difficulty of processing;(7) width of rebate of filter tube external spiral groove broadens gradually along body radially direction from inside to outside, contribute to being filled in external spiral groove by fashion of extrusion by fluid sealant in the course of processing, fluid sealant bottom external spiral groove is filled finer and close, further avoid and occur collapsing cutter at inner spiral groove and external spiral groove intersection when turning inner spiral groove.
Accompanying drawing explanation
Fig. 1 is check valve structure schematic diagram of the present invention.
Fig. 2 is that in Fig. 1, body coordinates schematic diagram with flexible sheets.
Fig. 3 is flexible sheet construction schematic diagram in Fig. 1.
Fig. 4 is body construction schematic diagram in Fig. 1.
Fig. 5 is the cross-sectional schematic of Fig. 4.
Fig. 6 is the close-up schematic view of Fig. 1.
Fig. 7 is the structural representation of filter tube, does not include occluding member.
Fig. 8 is the sectional structure schematic diagram of filter tube, does not include occluding member.
Fig. 9 be processing inner spiral groove time along Fig. 7 N-N to schematic partial cross-sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Such as Fig. 1 to 5, a kind of check-valves, including valve body 14, valve gap 1 and be fixed on the retaining element in valve body 14.Described valve 14 body is provided with water inlet 141 and outlet 142, and described valve gap 1 is fixing with described water inlet 141 to be connected.Described retaining element includes flexible sheets 12 and body 5, described body 5 is gradually tapered up to outlet by water inlet, described body 5 is embedded with connection axle 4, described connection axle 4 is fixing with described valve gap 1 to be connected, concrete, described connection axle 4 is provided with external screw thread, and described connection axle 4 is through described valve gap 1, and is fixed by nut 2 and elastic washer 3.Described connection axle 4 is copper piece, and described body 5 is working of plastics, and described connection axle 4 copper product ensure that the reliability of connection, is compared to working of plastics and not easily lost efficacy, and described body 5 can save cost for working of plastics.Described body 5 is combined with the described axle 4 that is connected by Shooting Technique, described body 5 with the described faying face being connected axle 4 is provided with structure that boss closes with recesses to strengthen described body 5 and the described adhesion being connected between axle 4.
Described flexible sheets 12 is ring-type, and its one end is fixing with described valve body 14 to be connected, and the inwall of the other end is close to the sidewall of described body 5.In present embodiment, described flexible sheets 12 is adopted as conical ring, and its big end is fixing with described valve body 14 to be connected, and the inwall of its small end is close to the sidewall of described body 5.The big end of described flexible sheets 12 is an annulus, and annulus is folded between described valve gap 1 and described valve body 14, and described annulus is provided with boss, described boss and the fit depressions on described valve gap 1, plays sealing function.Described flexible sheets 12 is nitrile rubber, has wearability and air-tightness.Described flexible sheets 12 can also adopt the profile of other shell-likes,
The sidewall of the outer wall arc transition of described flexible sheets 12 extremely described body 5.By this arc transition, play the effect of reversely sealing when medium reverse flow.
The conical surface that sidewall is outwardly convex of described body 5, during medium forward flow, resistance is less.
Described a kind of check-valves is additionally provided with the magnetic mechanism making described flexible sheets 12 be drawn to described body 5.Described magnetic mechanism includes being located at the iron hoop 13 within described flexible sheets 12 wall body and is located at the Magnet 6 within described body 5.Described iron hoop 13 is located at the middle part of described flexible sheets, and the internal containing cavity being provided with accommodating described Magnet 6 of described body 5, described Magnet 6 is sealed in inside described containing cavity by asphalt mixtures modified by epoxy resin fat pad 7.Described Magnet 6 is sealed in described body 5, does not contact with medium, it is to avoid get rusty, it is possible to increase the service life.The cross section of described body 5 is oval or circular, and when ellipse or circle all can make medium through-flow, resistance is less.
When just conventional water, the right and left at valve forms bigger pressure reduction, and medium washes described flexible sheets 12 open, flows through between described flexible sheets 12 and described body 5, and valve is in opening, and water meter normally measures.After faucet is closed, valve two ends no pressure is poor, and described flexible sheets 12 is close to the sidewall of described body again, and described iron hoop 13 and described Magnet 6 attract each other, and makes described flexible sheets 12 be close to described body 5 further, and valve is closed.And in above-mentioned unlatching and closing process, due to the characteristic of described flexible sheets 12 with the structure and material of described body 5, described body 5 and flexible sheets 12 collisionless, noise will not be produced.When reverse differential pressure occur in valve two ends, it is possible to make described iron hoop 13 be drawn to described Magnet 6, reach to seal non-return effect.Water meter, without idle running and reversion, reaches have current water meter just can measure, and non-water flow water meter is with regard to non-metering effect.
As shown in Figure 6, described valve body 14 is provided with water hammer energy-dissipating structure, described water hammer energy-dissipating structure includes the sleeve 143 being located at described valve body 14 lateral surface, and described sleeve 143 is connected with described valve body by pressure transmission hole 144, sets the energy dissipation mechanisms that piston 10 is constituted with spring 9 in described sleeve.Described piston outer wall has two grooves, and described groove installs O-ring seals 11, seals.Described piston 10 bottom has a groove to match with the external diameter of described spring 9, and the other end and a friction top 8 of described spring 9 offset, and friction top 8 inwall also has a groove to match with the external diameter of described spring 9.Described friction top is provided with external screw thread and matches with the female thread of described sleeve 143.Described friction top 8 outer wall is provided with in one six side's stepped holes; for screwing described friction top 8; certain effect power that described spring 9 can produce is compressed to described piston 10 for balancing counteracting force when water hammer produces when screwing described friction top 8; reach to eliminate the water hammer in pipeline, be effectively protected the effect of described flexible sheets 12 and the miscellaneous part in described body 5 and system.
The liquid inflow port of said two valve stator is each respectively connected with filter tube and the internal diameter connector more than filter tube external diameter, and described filter tube is arranged in the inner chamber of connector.
Such as Fig. 7 and 8, described filter tube has the body of outer end closure, described tube wall has the external spiral groove with body for rounding post, described inboard wall of tube body has the inner spiral groove with body for rounding post, described external spiral groove and inner spiral groove are oppositely oriented, the groove depth of described external spiral groove and the groove depth sum of inner spiral groove more than the wall thickness of body to form the filter opening of rhombus on body.
Described external spiral groove is single thread groove, and described inner spiral groove is three helicla flutes;
Described external spiral groove and inner spiral groove are Variable lead groove, and body needs the helical pitch helical pitch more than the position that need not bend of crooked position.
Such as Fig. 8, the revolver profile of described external spiral groove normal section profile and right wheel profile all tilt to homonymy and broaden gradually along the width of rebate of body radially direction external spiral groove from inside to outside.
The processing method of described filter tube comprises the steps:
(A) rough turn, finish turning tube wall;
(B) rough turn, finish turning external spiral groove;
(C) rough turn, finish turning inboard wall of tube body;
(D) in external spiral groove, fluid sealant is irrigated, such as Fig. 9, owing to the width of rebate of external spiral groove broadens gradually along body radially direction from inside to outside, can fluid sealant be filled in external spiral groove by fashion of extrusion and that fluid sealant bottom external spiral groove is filled is finer and close, it is to avoid subsequent handling occurs collapsing cutter at inner spiral groove and external spiral groove intersection when turning inner spiral groove;It is cooled to fluid sealant solidification;
(E) rough turn, finish turning inner spiral groove: owing to the revolver profile of external spiral groove normal section profile all tilts to homonymy with right wheel profile, therefore may select by Fig. 7 turning direction from left to right when turning inner spiral groove, when can make cutter vehicle to inner spiral groove and external spiral groove intersection, lathe tool direct of travel and external spiral groove two side are all acutangulated by the direction on inside base, outside, thus avoiding collapsing cutter, reduce difficulty of processing;Further, in external spiral groove, it is filled with fluid sealant, largely avoid the vibration that lathe tool causes because of chip breaking at inner spiral groove and external spiral groove intersection, further avoid the generation collapsing cutter phenomenon, and ensure that the roughness of inner spiral groove cell wall;
(F) in external spiral groove, it is wound around heating wire filter tube is heated, under the high temperature conditions cooling tube is bent to required form.

Claims (6)

1. a check-valves, including valve body, valve gap and be fixed on the retaining element in valve body, described retaining element includes flexible sheets and body, described valve body is provided with water inlet and outlet, it is characterized in that: described body is gradually tapered up to outlet by water inlet, described flexible sheets is ring-type, and its one end is fixing with described valve body to be connected, and the inwall of the other end is close to the sidewall of described body;
The sidewall of the outer wall rounding off of described flexible sheets extremely described body;
The sidewall of described body is the conical surface of outwardly convex;
Described check-valves is additionally provided with the magnetic mechanism making described flexible sheets be drawn to described body;
Described magnetic mechanism includes the iron hoop being located within described flexible sheets wall body and the Magnet being located at described body interior;
Described iron hoop is located at the middle part of described flexible sheets;
Described body is embedded with connection axle, and described connection axle is fixing with described valve gap to be connected;
Described valve inleting water mouth is connected to filter tube and the internal diameter connector more than filter tube external diameter, described filter tube is arranged in the inner chamber of connector, described filter tube has the body of outer end closure, described tube wall has the external spiral groove with body for rounding post, described inboard wall of tube body has the inner spiral groove with body for rounding post, described external spiral groove and inner spiral groove are oppositely oriented, the groove depth of described external spiral groove and the groove depth sum of inner spiral groove more than the wall thickness of body to form the filter opening of rhombus on body.
2. check-valves as claimed in claim 1, it is characterised in that: described external spiral groove is single thread groove, and described inner spiral groove is multi-head spiral groove.
3. check-valves as claimed in claim 1, it is characterised in that: described external spiral groove and inner spiral groove are Variable lead groove, and body needs the helical pitch helical pitch more than the position that need not bend of crooked position.
4. check-valves as claimed in claim 1, it is characterised in that: the revolver profile of described external spiral groove normal section profile and right wheel profile all tilt to homonymy.
5. check-valves as claimed in claim 1, it is characterised in that: described external spiral groove normal section profile broadens gradually along the width of rebate of body radially direction external spiral groove from inside to outside.
6. according to the arbitrary described check-valves of claim 1 to 5, it is characterised in that: described connection axle is copper piece, and described body is working of plastics.
CN201610276764.2A 2016-04-29 2016-04-29 Check valve Pending CN105715835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610276764.2A CN105715835A (en) 2016-04-29 2016-04-29 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610276764.2A CN105715835A (en) 2016-04-29 2016-04-29 Check valve

Publications (1)

Publication Number Publication Date
CN105715835A true CN105715835A (en) 2016-06-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107842646A (en) * 2017-12-05 2018-03-27 博纳斯威阀门股份有限公司 Combined type water shock absorber
CN108758027A (en) * 2016-04-13 2018-11-06 陈杰 A kind of one-way cock
CN110035791A (en) * 2016-11-06 2019-07-19 本迪特技术有限公司 Manipulation instrument
RU2713933C1 (en) * 2019-06-14 2020-02-11 Публичное акционерное общество «Татнефть» имени В.Д. Шашина Check valve
CN111536272A (en) * 2020-05-06 2020-08-14 珠海格力电器股份有限公司 Valve and water supply system
CN112664747A (en) * 2021-01-18 2021-04-16 石家庄闻索科技有限公司 Flange leak protection device capable of inhibiting water hammer influence
US11278831B2 (en) * 2018-05-28 2022-03-22 Gree Electric Appliances (Wuhan) Co., Ltd Filter element assembly and water purifier
RU220581U1 (en) * 2023-07-05 2023-09-22 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Device for self-regulation of hydraulic mode

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621067A1 (en) * 1993-04-01 1994-10-26 Odis Irrigation Equipment Ltd. Water filter
CN202037851U (en) * 2011-04-18 2011-11-16 洪昌喜 Filter for plastic extruding machine
CN202188178U (en) * 2011-07-18 2012-04-11 浙江盾安阀门有限公司 Filtering check valve
CN103062448A (en) * 2012-12-29 2013-04-24 浙江盾安阀门有限公司 Anti-leaking check valve
CN103201021A (en) * 2010-10-29 2013-07-10 通用电气公司 Spiral wound membrane element product water tube with external flow grooves
CN203347757U (en) * 2013-07-23 2013-12-18 大庆市永晨石油科技有限公司 High-strength self-cleaning sieve tube
CN204134315U (en) * 2014-09-24 2015-02-04 安徽天成油脂有限公司 Bidirectional flushing helical filter
TW201521850A (en) * 2013-12-05 2015-06-16 Metal Ind Res & Dev Ct Material collection device of heat treatment apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621067A1 (en) * 1993-04-01 1994-10-26 Odis Irrigation Equipment Ltd. Water filter
CN103201021A (en) * 2010-10-29 2013-07-10 通用电气公司 Spiral wound membrane element product water tube with external flow grooves
CN202037851U (en) * 2011-04-18 2011-11-16 洪昌喜 Filter for plastic extruding machine
CN202188178U (en) * 2011-07-18 2012-04-11 浙江盾安阀门有限公司 Filtering check valve
CN103062448A (en) * 2012-12-29 2013-04-24 浙江盾安阀门有限公司 Anti-leaking check valve
CN203347757U (en) * 2013-07-23 2013-12-18 大庆市永晨石油科技有限公司 High-strength self-cleaning sieve tube
TW201521850A (en) * 2013-12-05 2015-06-16 Metal Ind Res & Dev Ct Material collection device of heat treatment apparatus
CN204134315U (en) * 2014-09-24 2015-02-04 安徽天成油脂有限公司 Bidirectional flushing helical filter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108758027A (en) * 2016-04-13 2018-11-06 陈杰 A kind of one-way cock
CN110035791A (en) * 2016-11-06 2019-07-19 本迪特技术有限公司 Manipulation instrument
CN110035791B (en) * 2016-11-06 2022-09-30 本迪特技术有限公司 Operating tool
CN107842646A (en) * 2017-12-05 2018-03-27 博纳斯威阀门股份有限公司 Combined type water shock absorber
US11278831B2 (en) * 2018-05-28 2022-03-22 Gree Electric Appliances (Wuhan) Co., Ltd Filter element assembly and water purifier
RU2713933C1 (en) * 2019-06-14 2020-02-11 Публичное акционерное общество «Татнефть» имени В.Д. Шашина Check valve
CN111536272A (en) * 2020-05-06 2020-08-14 珠海格力电器股份有限公司 Valve and water supply system
CN111536272B (en) * 2020-05-06 2021-09-14 珠海格力电器股份有限公司 Valve and water supply system
CN112664747A (en) * 2021-01-18 2021-04-16 石家庄闻索科技有限公司 Flange leak protection device capable of inhibiting water hammer influence
CN112664747B (en) * 2021-01-18 2022-07-05 临海市三江工程机械制造有限公司 Flange leak protection device capable of inhibiting water hammer influence
RU220581U1 (en) * 2023-07-05 2023-09-22 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Device for self-regulation of hydraulic mode

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Application publication date: 20160629