CN104747763A - Current limiting check valve - Google Patents
Current limiting check valve Download PDFInfo
- Publication number
- CN104747763A CN104747763A CN201310725763.8A CN201310725763A CN104747763A CN 104747763 A CN104747763 A CN 104747763A CN 201310725763 A CN201310725763 A CN 201310725763A CN 104747763 A CN104747763 A CN 104747763A
- Authority
- CN
- China
- Prior art keywords
- valve
- current limiting
- flap
- valve body
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1826—Check valves which can be actuated by a pilot valve
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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
- F04B53/102—Disc valves
- F04B53/1022—Disc valves having means for guiding the closure member axially
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
Abstract
The invention discloses a current limiting check valve. The current limiting check valve mainly consists of a valve body, a valve base, a valve part, a filter, a valve cover, a current limiting guide valve, a spring, a spring base, a needle valve, a diaphragm and a guide rod, wherein an inlet cavity of the valve body and a valve cover cavity are connected by a guide pipe; the current limiting guide valve is arranged on the guide pipe; a one-way valve is arranged behind the current limiting guide valve; the filter is arranged in front of the current limiting guide valve; a ball valve is arranged on the frontal surface of the filter; the current limiting guide valve is used for controlling the lift of a water pump, namely the pressure difference of an inlet and an outlet of the water pump, and has an effect for controlling the pressure difference of the inlet and the outlet of the water pump; and a connecting port is formed in the current limiting guide valve, and is connected with the inlet of the water pump. The current limiting check valve has the following beneficial effects: the current limiting check valve is mounted in the outlet of the water pump to achieve the effects of limiting the working flow of the water pump and preventing the pump stop backflow when multiple pumps are connected in parallel for use; and the current limiting check valve has such advantages as compact structure, lighter weight, large adjustment range, high sensitivity and stable and reliable operation.
Description
Technical field
The present invention relates to valve technology field, specifically a kind of flow restricted check valve being installed on exit of pump when using for multiple ontology.
Background technique
Flow restricted check valve is a kind of Self-operated valve.Adopt the mode changing number of units to carry out the system of Flow-rate adjustment for the parallel connection of water pump multiple stage, install this kind of valve at exit of pump, to operating pump, can lift be stablized, limited flow, prevent the generation of overloading, to pump branch road out of service, then there is non-return effect.But the deficiency that the flow restricted check valve used at present exists that regulation range is little, regulating error is large, sensitivity is low and critical component working life is short etc.
Summary of the invention
The object of the present invention is to provide a kind of compact structure, lightweight, regulation range is large, the highly sensitive and reliable flow restricted check valve of working stability.
The technical solution adopted for the present invention to solve the technical problems is: flow restricted check valve is primarily of valve body, valve seat, flap, filter, valve gap, current limliting pilot valve, spring, spring seat, needle value, barrier film and guide rod composition, valve body and valve gap are bolted connection, centre is provided with barrier film and valve body and valve gap is separated, valve gap is placed in valve body top, valve cover cavity is formed between valve gap and barrier film, spring is provided with in valve cover cavity, spring top coordinates with valve gap top, relief opening is also provided with and plug is prepared at valve gap top, spring bottom is by spring seat and membrane contacts, described flap is located in valve body, spring seat, barrier film and flap pass through guide rod, positioning ring and nut are fixed together, guide rod is vertically arranged, and run through barrier film and two ends extend in valve cover cavity and valve body respectively, the lower end that guide rod is placed in valve body is provided with positioning ring, flap is limited above positioning ring, flap top and membrane contacts, guide rod stretches into valve cover cavity linking springs seat and is fixed by nut, flap is coordinated to be provided with valve seat on valve body, valve seat and valve flap contacts part are provided with sealing gasket, pilot hole is provided with at valve seat center, pilot hole is used for positioning and guiding bar, guide rod can move up and down in pilot hole, valve seat and valve body are set to one, and valve body is separated into snout cavity and outlet plenum two-part by valve seat, flap is positioned at outlet plenum, also be provided with sewage draining exit at body base to prepare with plug of removing contamination.
By tubes connection between the snout cavity of described valve body and valve cover cavity, and be provided with current limliting pilot valve on this catheter, one-way valve is provided with after current limliting pilot valve, also filter was provided with before current limliting pilot valve, be provided with ball valve before filter, described current limliting pilot valve for controlling pump head, i.e. water pump inlet outlet pressure differential, there is the effect controlled water pump inlet outlet pressure differential, current limliting pilot valve is provided with connection mouth and is connected with pump entrance; Also be provided with tubes connection between the outlet plenum of described valve body and valve cover cavity, and be provided with needle value on this conduit.
Working principle of the present invention is as follows, current enter through the snout cavity of exit of pump by valve body, outlet plenum is flowed to after flap throttling restriction, play metering function, when pump head is greater than the control pressure reduction of current limliting pilot valve, current limliting pilot valve is in closed condition, flap can reach maximum opening under the water pressure pushing of snout cavity, when needs change flow and reduce water pump operation number of units, the pump capacity run will increase, lift reduces, when lift is less than the control pressure reduction of current limliting pilot valve, current limliting pilot valve is opened, part current flow into valve cover cavity after current limliting pilot valve and one-way valve, the water pressure in valve cover cavity is caused to increase, barrier film drives flap to move down, the overflow section reduced between flap and valve seat amasss, its water flow reduces thereupon, pump head increases thereupon, during state of equilibrium to be achieved, pump head is the control pressure reduction of current limliting pilot valve, when switching off the pump, the outlet plenum pressure of valve body is greater than snout cavity pressures, and current flow into valve cover cavity through needle value, valve cover cavity pressure increase, and barrier film drives flap to close, and plays the effect of buffer valve.
The invention has the beneficial effects as follows, the present invention is used for being installed on water pump when multiple ontology uses and extrudes mouth, play restriction pump working flow, prevent termination of pumping backflow effect, there is the advantages such as large, the highly sensitive and working stability of compact structure, lighter in weight, regulation range is reliable.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, valve body, 2, snout cavity, 3, valve seat, 4, conduit, 5, ball valve, 6, flap, 7, filter, 8, valve gap, 9, current limliting pilot valve, 10, connection mouth, 11, one-way valve, 12, spring, 13, relief opening, 14, plug, 15, nut, 16, spring seat, 17, needle value, 18, conduit, 19, valve cover cavity, 20, bolt, 21, barrier film, 22, guide rod, 23, sealing gasket, 24, outlet plenum, 25, positioning ring, 26, pilot hole, 27, sewage draining exit, 28, plug of removing contamination.
Embodiment
With regard to accompanying drawing 1, flow restricted check valve of the present invention is described in detail below below.
As shown in Figure 1, flow restricted check valve of the present invention is primarily of valve body 1, valve seat 3, flap 6, filter 7, valve gap 8, current limliting pilot valve 9, spring 12, spring seat 16, needle value 17, barrier film 21 and guide rod 22 form, valve body 1 and valve gap 8 are fastenedly connected by bolt 20, centre is provided with barrier film 21 and valve body 1 and valve gap 8 is separated, valve gap 8 is placed in valve body 1 top, valve cover cavity 19 is formed between valve gap 8 and barrier film 21, spring 12 is provided with in valve cover cavity 19, spring 12 top coordinates with valve gap 8 top, also be provided with relief opening 13 to prepare with plug 14 at valve gap 8 top, spring 12 bottom is contacted with barrier film 21 by spring seat 16, described flap 6 is located in valve body 1, spring seat 16, barrier film 21 and flap 6 are by guide rod 22, positioning ring 25 and nut 15 are fixed together, guide rod 22 is vertically arranged, and run through barrier film 21 and two ends extend in valve cover cavity 19 and valve body 1 respectively, guide rod 22 lower end be placed in valve body 1 is provided with positioning ring 25, positioning ring 25 limits flap 6 above, flap 6 top contacts with barrier film 21, guide rod 22 stretches into valve cover cavity 19 linking springs seat 16 and is fixed by nut 15, flap 6 is coordinated to be provided with valve seat 3 on valve body 1, valve seat 3 and flap 6 contact segment are provided with sealing gasket 23, pilot hole 26 is provided with at valve seat 3 center, pilot hole 26 is for positioning and guiding bar 22, guide rod 22 can move up and down in pilot hole 26, valve seat 3 and valve body 1 are set to one, and valve body 1 is separated into snout cavity 2 and outlet plenum 24 two-part by valve seat 3, flap 6 is positioned at outlet plenum 2, bottom valve body 1, be also provided with sewage draining exit 27 prepare with plug 28 of removing contamination.
The snout cavity 2 of described valve body 1 is connected by conduit 4 with between valve cover cavity 19, and current limliting pilot valve 9 is provided with on this conduit 4, one-way valve 11 is provided with after current limliting pilot valve 9, filter 7 was also provided with before current limliting pilot valve 9, filter 7 is above provided with ball valve 5, described current limliting pilot valve 9 for controlling pump head, i.e. water pump inlet outlet pressure differential, there is the effect controlled water pump inlet outlet pressure differential, current limliting pilot valve 9 is provided with connection mouth 10 and is connected with pump entrance; The outlet plenum 24 of described valve body 1 be also provided with conduit 18 between valve cover cavity 19 and be connected, and be provided with needle value 17 on this conduit 18.
Working principle of the present invention is as follows, current enter through the snout cavity 2 of exit of pump by valve body 1, outlet plenum 24 is flowed to after flap 6 throttling restriction, play metering function, when pump head is greater than the control pressure reduction of current limliting pilot valve 9, current limliting pilot valve 9 is in closed condition, flap 6 can reach maximum opening under the water pressure pushing of snout cavity 2, when needs change flow and reduce water pump operation number of units, the pump capacity run will increase, lift reduces, when lift is less than the control pressure reduction of current limliting pilot valve 9, current limliting pilot valve 9 is opened, part current flow into valve cover cavity 19 after current limliting pilot valve 9 and one-way valve 11, the water pressure in valve cover cavity 19 is caused to increase, barrier film 21 drives flap 6 to move down, the overflow section reduced between flap 6 and valve seat 3 amasss, its water flow reduces thereupon, pump head increases thereupon, during state of equilibrium to be achieved, pump head is the control pressure reduction of current limliting pilot valve 9, when switching off the pump, outlet plenum 24 pressure of valve body 1 is greater than snout cavity 2 pressure, and current flow into valve cover cavity 19 through needle value 17, valve cover cavity 19 pressure increase, and barrier film 21 drives flap 6 to close, and plays the effect of buffer valve.
Claims (5)
1. a flow restricted check valve is primarily of valve body, valve seat, flap, filter, valve gap, current limliting pilot valve, spring, spring seat, needle value, barrier film and guide rod composition, it is characterized in that, valve body and valve gap are bolted connection, centre is provided with barrier film and valve body and valve gap is separated, valve gap is placed in valve body top, valve cover cavity is formed between valve gap and barrier film, valve seat and valve body are set to one, and valve body is separated into snout cavity and outlet plenum two-part by valve seat, by tubes connection between the snout cavity of described valve body and valve cover cavity, and be provided with current limliting pilot valve on this catheter, one-way valve is provided with after current limliting pilot valve, also filter was provided with before current limliting pilot valve, ball valve is provided with before filter, current limliting pilot valve is provided with connection mouth be connected with pump entrance.
2. flow restricted check valve according to claim 1, is characterized in that, is also provided with tubes connection between the outlet plenum of described valve body and valve cover cavity, and is provided with needle value on this conduit.
3. flow restricted check valve according to claim 1, is characterized in that, in valve cover cavity, be provided with spring, and spring top coordinates with valve gap top, is also provided with relief opening and plug is prepared at valve gap top, and spring bottom is by spring seat and membrane contacts.
4. flow restricted check valve according to claim 3, it is characterized in that, described flap is located in valve body, spring seat, barrier film and flap pass through guide rod, positioning ring and nut are fixed together, guide rod is vertically arranged, and run through barrier film and two ends extend in valve cover cavity and valve body respectively, the lower end that guide rod is placed in valve body is provided with positioning ring, flap is limited above positioning ring, flap top and membrane contacts, guide rod stretches into valve cover cavity linking springs seat and is fixed by nut, flap is coordinated to be provided with valve seat on valve body, valve seat and valve flap contacts part are provided with sealing gasket, pilot hole is provided with at valve seat center.
5. flow restricted check valve according to claim 1, is characterized in that, flap is positioned at outlet plenum, is also provided with sewage draining exit prepares with plug of removing contamination at body base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725763.8A CN104747763A (en) | 2013-12-25 | 2013-12-25 | Current limiting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725763.8A CN104747763A (en) | 2013-12-25 | 2013-12-25 | Current limiting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747763A true CN104747763A (en) | 2015-07-01 |
Family
ID=53587869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310725763.8A Pending CN104747763A (en) | 2013-12-25 | 2013-12-25 | Current limiting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105399A (en) * | 2016-11-25 | 2018-06-01 | 环境保护部核与辐射安全中心 | For the trigger device of safety valve |
| CN108317254A (en) * | 2018-01-19 | 2018-07-24 | 商球 | A kind of current-limiting apparatus of plumbing for building equipment robot control system(RCS) |
| JP6440153B1 (en) * | 2018-08-07 | 2018-12-19 | 株式会社創設 | Pressure detection type check valve |
-
2013
- 2013-12-25 CN CN201310725763.8A patent/CN104747763A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105399A (en) * | 2016-11-25 | 2018-06-01 | 环境保护部核与辐射安全中心 | For the trigger device of safety valve |
| CN108105399B (en) * | 2016-11-25 | 2019-10-15 | 环境保护部核与辐射安全中心 | Trigger device for safety valve |
| CN108317254A (en) * | 2018-01-19 | 2018-07-24 | 商球 | A kind of current-limiting apparatus of plumbing for building equipment robot control system(RCS) |
| JP6440153B1 (en) * | 2018-08-07 | 2018-12-19 | 株式会社創設 | Pressure detection type check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
|
| WD01 | Invention patent application deemed withdrawn after publication |