CN102392905B - Straight-through type water-hammer eliminating check valve - Google Patents
Straight-through type water-hammer eliminating check valve Download PDFInfo
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- CN102392905B CN102392905B CN 201110250722 CN201110250722A CN102392905B CN 102392905 B CN102392905 B CN 102392905B CN 201110250722 CN201110250722 CN 201110250722 CN 201110250722 A CN201110250722 A CN 201110250722A CN 102392905 B CN102392905 B CN 102392905B
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- valve
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- straight
- flap
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract 3
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
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- Check Valves (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a straight-through type water-hammer eliminating check valve, which comprises a valve body, wherein the valve body is provided with a water inlet and a water outlet. The straight-through type water-hammer eliminating check valve is characterized in that: a valve seat is arranged on the water inlet of the valve body, the inner cavity of the valve body is coaxially providedwith a main-valve middle-cavity control room, one side of the control room facing to the water inlet is provided with a piston-type valve clack capable of axially sliding along the inner wall of the control room, the outer end surface of the valve clack and the valve opening of the valve seat are matched to realize the opening or the closing of the valve, the inner cavity of the valve clack is axially provided with a guiding rod penetrating out of the control room, a communicating gap is arranged between the outer lateral wall of the guiding rod and a penetrating hole of the control room, theextended end of the guiding rod is in the shape of an inverted cone with a gradually-increased axle diameter, a conical surface matched with the inverted cone is arranged on the penetrating hole, anda pressure spring which is sleeved at the outer side of the guiding rod is arranged between the inner wall of the valve clack and the inner wall of the control room. The straight-through type water-hammer eliminating check valve is automatically operated by utilizing water power, so that the optimal opening or closing speed of a main valve can be obtained, the generation of water-hammer water attacks is prevented to achieve the effects of slow closing and noise elimination, and meanwhile, the straight-through type water-hammer eliminating check valve has a simple structure and is convenient to maintain.
Description
Technical field
The present invention relates to a kind of straight-through type water hammer safety check that disappears, be widely used in water supply pipe net systems such as tall building, living area and town water supply engineering.
Background technique
Safety check is a kind of valve that prevents that pipeline or equipment medium from flowing backwards.It utilizes the kinetic energy of fluid and opens.In water system, safety check often is installed in delivery side of pump and other does not allow the place of reverse fluid flow.Select suitable safety check pattern to carrying out protecting water hammer very big influence to be arranged, for example a large amount of water hammer accident is the accident relevant with the safety check of pump discharge installing in the pumping plant.Current begin to flow backwards after the termination of pumping, under the effect of the stream that falls to sluice, safety check cuts out rapidly, if safety check is because the influence of fault or bearing surface friction drag and inertia thereof, safety check might lag behind the time that begins to flow backwards, namely increase to certain value in the refluence amount, even close rapidly in the moment of maximum refluence amount, then can produce very large pressure at the check valve receptacle place.The safety check flap closes when flow velocity is zero that to finish be the optimum state of closing, and it is unlikely finishing when flow velocity is zero that flap closes.It is generally acknowledged that to finish be exactly normal as long as close near zero delivery.
Summary of the invention
The object of the present invention is to provide a kind of straight-through type water hammer safety check that disappears, the present invention utilizes waterpower to operate automatically, can make main valve obtain best unlatching or closing velocity, prevents the generation of water hammer water attack, to reach the effect that Slow Close is eliminated the noise, the while is simple in structure, maintenance is easy.
The straight-through type of the present invention water hammer safety check that disappears, comprise the valve body that is provided with water intake and water outlet, it is characterized in that: the water intake of described valve body is provided with valve seat, described body cavity is coaxially arranged with main valve lumen control room, described control room is provided with towards water intake one side can be along the piston type flap of control room inwall axial slip, the exterior edge face of described flap cooperates the unlatching that realizes valve with the valve port of valve seat or closes, described flap inner chamber is provided with the guide rod that passes the control room vertically, passing of described guide rod outer side wall and control room is provided with communication gap between the hole, the external part of described guide rod is the diameter of axle and becomes big inverted cone gradually, the described hole that passes is provided with the conical surface that cooperates with inverted cone, is provided with the stage clip that is nested with in the guide rod outside between described flap inwall and the control room inwall.
Above-mentioned flap middle part is provided with tapped hole, the joint of described guide rod and flap is double-screw bolt, offer axial hole on the described double-screw bolt, also be equipped with the axis of guide in the described axial hole, the external part of the described axis of guide is fixedlyed connected with valve base inner wall through guide plate radially.
Above-mentioned control room inwall is provided with the guide sleeve that is slidingly matched with flap.
Advantage of the present invention: flap assembly quick closedown in 4/5ths shutoff stroke of water hammer safety check but this straight-through type disappears, control fluid to greatest extent and flow backwards, in case the reversing of pump hypervelocity and pump house are flooded; And in 1/5th last shutoff strokes, because guide rod and pass hole effect and form flap and close the closed procedure flow resistance and increase gradually, in residue 1/5th shutoff strokes, flow resistance increases, closing velocity slows down, reach Slow Close speed, can prevent under any operating mode that destructive water hammer from producing, and reaches the effect of complete non-return at last.Close and steadily and not produce pressure surge.This valve volume is little, in light weight, easy to maintenance, esy to use, safe and reliable.
Description of drawings
Fig. 1 is embodiment's valve body opening state sectional view.
Fig. 2 is embodiment's valve body closed condition sectional view.
Among the figure: 1-valve body, 2-valve seat, 3-control room, 4-flap, 5-guide rod, 6-pass the hole, 7-stage clip, 8-axial hole, 9-axis of guide, 10-radially guide plates, 11-guide sleeve.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the straight-through type provided by the invention water hammer safety check that disappears is done and specified.
The straight-through type of the present invention water hammer safety check that disappears, comprise the valve body 1 that is provided with water intake and water outlet, it is characterized in that: the water intake of described valve body 1 is provided with valve seat 2, described valve body 1 inner chamber is coaxially arranged with main valve lumen control room 3, described control room 3 towards water intake one side be provided with can be along the control room piston type flap 4 of 3 inwall axial slips, the exterior edge face of described flap 4 cooperates the unlatching that realizes valve with the valve port of valve seat 2 or closes, described flap 4 inner chambers are provided with the guide rod 5 that passes control room 3 vertically, described guide rod 5 outer side walls and passing between the hole 6 of control room 3 are provided with communication gap, the external part of described guide rod 5 is the diameter of axle and becomes big inverted cone gradually, the described hole 6 that passes is provided with the conical surface that cooperates with inverted cone, is provided with the stage clip 7 that is nested with in guide rod 5 outsides between described flap inwall and control room 3 inwalls.
Above-mentioned flap 4 middle parts are provided with tapped hole, described guide rod 5 is double-screw bolt with the joint of flap, offer axial hole 8 on the described double-screw bolt, also be equipped with the axis of guide 9 in the described axial hole 8, the external part of the described axis of guide 9 is fixedlyed connected with valve seat 2 inwalls through guide plate 10 radially.
Above-mentioned control room 3 inwalls are provided with the guide sleeve 11 that is slidingly matched with flap 4.
Working principle of the present invention: in the conveying fluid piping system that promotes with pump, after the pump running, the disappear flap assembly of water hammer safety check of straight-through type is opened automatically by hydrodynamic pressure, and resistance is little, and noise is low.After the pump stall, flap assembly quick closedown in 4/5ths shutoff stroke of water hammer safety check but straight-through type disappears is controlled fluid to greatest extent and is flow backwards, in case the reversing of pump hypervelocity and pump house are flooded; And in 1/5th last shutoff strokes, because guide rod 5 and pass hole 6 effects and form flaps 4 and close the closed procedure flow resistances and increase gradually, in residue 1/5th shutoff strokes, flow resistance increases, closing velocity slows down, reach Slow Close speed, can prevent under any operating mode that destructive water hammer from producing, and reaches the effect of complete non-return at last.
The present invention does not limit to above-mentioned preferred forms, and anyone can draw other various forms of straight-through types water hammer safety check that disappears under enlightenment of the present invention.All equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. straight-through type water hammer safety check that disappears, comprise the valve body that is provided with water intake and water outlet, it is characterized in that: the water intake of described valve body is provided with valve seat, described body cavity is coaxially arranged with main valve lumen control room, described control room is provided with towards water intake one side can be along the piston type flap of control room inwall axial slip, the exterior edge face of described flap cooperates the unlatching that realizes valve with the valve port of valve seat or closes, described flap inner chamber is provided with the guide rod that passes the control room vertically, passing of described guide rod outer side wall and control room is provided with communication gap between the hole, the external part of described guide rod is the diameter of axle and becomes big inverted cone gradually, the described hole that passes is provided with the conical surface that cooperates with inverted cone, is provided with the stage clip that is nested with in the guide rod outside between described flap inwall and the control room inwall.
2. the straight-through type according to claim 1 water hammer safety check that disappears, it is characterized in that: described flap middle part is provided with tapped hole, the joint of described guide rod and flap is double-screw bolt, offer axial hole on the described double-screw bolt, also be equipped with the axis of guide in the described axial hole, the external part of the described axis of guide is fixedlyed connected with valve base inner wall through guide plate radially.
3. the straight-through type according to claim 1 water hammer safety check that disappears, it is characterized in that: described control room inwall is provided with the guide sleeve that is slidingly matched with flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250722 CN102392905B (en) | 2011-08-29 | 2011-08-29 | Straight-through type water-hammer eliminating check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250722 CN102392905B (en) | 2011-08-29 | 2011-08-29 | Straight-through type water-hammer eliminating check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102392905A CN102392905A (en) | 2012-03-28 |
| CN102392905B true CN102392905B (en) | 2013-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110250722 Active CN102392905B (en) | 2011-08-29 | 2011-08-29 | Straight-through type water-hammer eliminating check valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102392905B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676519B (en) * | 2017-10-31 | 2023-12-26 | 安徽红星阀门有限公司 | Axial-flow type water control regulating valve |
| CN108869761B (en) * | 2018-09-17 | 2024-03-15 | 东莞珀力伟动力科技有限公司 | Mute improved control valve of oil pump |
| TWI748874B (en) * | 2021-02-19 | 2021-12-01 | 艾克富國際企業有限公司 | Trunk line type water hammer absorber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418326Y (en) * | 2000-04-14 | 2001-02-07 | 周宏远 | Spiral-shuttle type non-return valve |
| CN1300498C (en) * | 2003-05-20 | 2007-02-14 | 辽阳高新给水设备有限公司 | Slow-opening and fast-closing energy-saving non-return valve |
| CN2895927Y (en) * | 2005-07-26 | 2007-05-02 | 戴福君 | Quick-closing hammer-free energy-saving non-return valve |
| CN201083287Y (en) * | 2007-08-08 | 2008-07-09 | 周宏远 | Closed body piston universal check valve |
| CN201739569U (en) * | 2010-07-06 | 2011-02-09 | 福建高中压阀门科技有限公司 | Preventer for backflow of liquid |
| CN102072342B (en) * | 2010-12-04 | 2012-07-04 | 福建高中压阀门科技有限公司 | Coaxial difference path device with double check valve clacks |
| CN202252170U (en) * | 2011-08-29 | 2012-05-30 | 福建高中压阀门科技有限公司 | Straight-through type water hammer eliminating check valve |
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2011
- 2011-08-29 CN CN 201110250722 patent/CN102392905B/en active Active
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| Publication number | Publication date |
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| CN102392905A (en) | 2012-03-28 |
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| SE01 | Entry into force of request for substantive examination | ||
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Address after: Fuxing Road, Jinan District, Fuzhou city of Fujian province 350014 No. 49 No. 3 No. 7 No. -8 store Patentee after: Fujian spring brand valve Polytron Technologies Inc Address before: 350014 Industrial Park in Fuzhou, Fujian Province Patentee before: Fujian High & Intermediate Voltage Valve Technology Co., Ltd. |