CN106149648A - A kind of construction method of the automatic flap valve of irrigation and drainage water pump - Google Patents

A kind of construction method of the automatic flap valve of irrigation and drainage water pump Download PDF

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Publication number
CN106149648A
CN106149648A CN201610510916.0A CN201610510916A CN106149648A CN 106149648 A CN106149648 A CN 106149648A CN 201610510916 A CN201610510916 A CN 201610510916A CN 106149648 A CN106149648 A CN 106149648A
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CN
China
Prior art keywords
flap valve
outlet
water pump
counter
jib
Prior art date
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Granted
Application number
CN201610510916.0A
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Chinese (zh)
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CN106149648B (en
Inventor
张朝峰
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Shandong Xiangdi Pipe Co ltd
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Suzhou Duogu Engineering Design Co Ltd
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Priority to CN201610510916.0A priority Critical patent/CN106149648B/en
Publication of CN106149648A publication Critical patent/CN106149648A/en
Application granted granted Critical
Publication of CN106149648B publication Critical patent/CN106149648B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/102Disc valves
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B13/00Irrigation ditches, i.e. gravity flow, open channel water distribution systems
    • E02B13/02Closures for irrigation conduits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B11/00Drainage of soil, e.g. for agricultural purposes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00

Abstract

The invention discloses the construction method of a kind of automatic flap valve of irrigation and drainage water pump, including pump outlet and the flap valve being arranged on outlet, it is characterized in that, described pump outlet bottom is provided with bearing, counter-jib is movably connected on bearing, and counter-jib upper end connects flap valve, and flap valve is blocked on outlet, counter-jib lower end is provided with counterweight connector, and counterweight connector connects metal weights body;When opening water pump, current wash flap valve open, and flap valve lies in outlet bottom, and water outlet is not had resistance, water pump to stop pumping by flap valve, closes on outlet owing to the effect of backwater power makes flap valve automatically lift, it is to avoid water refluxes along pipeline.

Description

A kind of construction method of the automatic flap valve of irrigation and drainage water pump
Technical field
The application relates to water pump field of drawing water, and particularly relates to the construction method of a kind of automatic flap valve of irrigation and drainage water pump.
Background technology
In the water pump of existing middle-size and small-size water drainage or irrigation, flap valve is critically important structural fittings, and it is mainly at water When pump is shut down, stop the water backflow that will take out in upper/channel.But the flap valve of routine upwards starts, flap valve and water The connecting shaft of pump line is on water pump water outlet mouth of pipe top, and it is when drawing water, pumping for water pump impulse force jack-up to be continued flap valve, leans on during shutdown Flap valve self gravitation closes, light then the most hundreds of kilogram of tens kilogram weights of the flap valve of the conventional middle-size and small-size water pump for irrigation and drainage, depends on By pumping for water pump impulse force, flap valve is continued jack-up, it is therefore desirable to consume much electricity.
For reducing energy resource consumption, improve pumping station operation efficiency, it is proposed that one is arranged on pump outlet bottom, opening angle Degree is big, unresisted energy-saving automatic turnover flap valve when drawing water, and according to mechanics principle, originally will be arranged on outlet top Flap valve changes into being arranged on outlet bottom, and flap valve is arranged on counter-jib and supports left end, and balance weight body is arranged on counter-jib and supports right-hand member, Flap valve, when opening, is positioned at and supports the flap valve of left end and be positioned at the balance weight body weight balancing supporting right-hand member, therefore hinder outlet Power is less, stops pumping, and flap valve is because right-hand member moment is bigger and backwater suction lid is on outlet, thus plays stop current along going out The effect of water pipe backflow, the type flap valve has techniques below feature: 1, without any headstock gear, can automatic open close;2, peace Complete stable, efficient energy-saving;3, non-resistance when this flap valve runs, when closing, impact force is little, produces when eliminating water hammer and water outlet Whirlpool;4, control without hands, electricity, air-liquid, not manual operation, save a large amount of manpower and materials, improve pumping station operation reliability and Unit efficiency, reduces operation expense;5, reducing pumping plant energy consumption, this flap valve is clapped than suspension type in actual motion after tested Door saves energy 22.5%;6, flap valve and accessory thereof use stainless steel material, will not corrosion, its rubber sheet gasket is changed convenient, close Envelope is reliable, and product structure advantages of simple, service life is up to more than 30 years and easy to maintenance.
Summary of the invention
Present invention solves the technical problem that: the application relies on pumping for water pump impulse force by it for water pump flap in prior art Jack-up and need to expend the deficiency of electric energy, it is provided that a kind of flap valve is installed on pump outlet bottom, and does not consume electric energy The construction method of the automatic flap valve of irrigation and drainage water pump.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of automatic flap valve of irrigation and drainage water pump, including pump outlet and the flap valve being arranged on outlet, it is characterised in that Described pump outlet bottom is provided with bearing, and counter-jib is movably connected on bearing, and counter-jib upper end connects flap valve, and flap valve is fitted On outlet, counter-jib lower end connects balance weight body by counterweight connector.
Further, described flap valve is provided with pad, and described pad is the annular gasket coordinating outlet, described annular Pad is provided with two annular protrusions, is provided with annular groove, described groove and outlet between two described annular protrusions Front end tube wall coordinates closely.
Further, described outlet is set to tilt the mouth of a river, and its angle of inclination is 40-80 °, it is preferred that inclination angle Degree is 45 °.
Further, described counter-jib is provided with support, supports and is flexibly connected by axle with bearing.
Further, described flap valve is provided with air ring film trap, and described annular gasket is arranged in air ring film trap.
Further, described balance weight body is metal or nonmetal spheroid or cuboid, it is preferred that balance weight body uses cast iron Spheroid.
Further, described flap valve back side circle centre position is provided with flap valve connector, and flap valve connector is provided with connecting hole, The top 2-5cm distance of described connecting hole is provided with catch, and this distance can ensure that flap valve has certain activity space, catch Can stop that flap valve, prevention flap valve are turned to below counter-jib top or counter-jib after opening.
Further, described pad is quality of rubber materials or magnetic rubber material, its groove coordinated with outlet tube wall For latex material or magnetic latex material, pad employing is gluing or pressing plate is fixed in supporting flap valve spacer groove.
The invention also discloses the manufacture method of the above-mentioned automatic flap valve of irrigation and drainage water pump, its feature includes following technique and step Rapid:
1) first making flap valve, flap valve is that steel plate makes, and its diameter is more than supporting pump outlet about 10cm, i.e. Periphery respectively protrudes effluent pipe mouth outer wall about 5cm, arranges spacer groove, by ring-shaped rubber pad at itself and pump outlet contact surface Being fixed in this spacer groove, arrange flap valve connector at flap valve back side circle centre position, flap valve connector is provided with connecting hole, described The top 3-5cm distance of connecting hole catch is set;
2) pump outlet makes: being set to tilt the mouth of a river by the water pump water outlet mouth of pipe, its angle of inclination is 40-80 °, preferably Angle of inclination be 45 °, pump outlet bottom tube wall arranges bearing, bearing is provided with connecting hole;
3) counter-jib makes: counter-jib is rectangle, is fixedly installed support at counter-jib bottom 3/4, and support is provided with even Connecing hole, be movably connected on bearing with axle, on counter-jib top, distance top 5-10cm arranges connecting hole, is movably connected in axle On the connecting hole of flap valve connector;Active connection is set in counter-jib lower end, active connection arranges counterweight connector, In counterweight connector lower end, balance weight body is set;
4) balance weight body makes: balance weight body is the spheroplast of iron casting, and piece rectangular steel pipe of welding is as even at an upper portion thereof Take over a job the counterweight connector of follower link, active connection be set on counterweight connector top, active connection by axle with flat Weighing apparatus arm lower end is flexibly connected;
5) pad makes: the pad described in step 1 is that rubber note is made or in rubber, addition magnetic powder note is made, and described annular is recessed Groove uses softer bipeltate or latex to make, or also adds magnetic powder in bipeltate or latex and make, by pad with Gluing or pressing plate is fixed in supporting flap valve spacer groove;
6) application of flap valve: when opening water pump, current wash the flap valve outside outlet open, and flap valve lies under outlet Portion, balancing the post-brachial balance weight body flap valve with front portion is anterior-posterior balance state in support, bearing junction, and flap valve does not affects The mouth of a river, does not has resistance, water pump to stop pumping to water outlet, closes at outlet owing to the effect of backwater power makes flap valve automatically lift On, the front end tube wall of outlet fits tightly with the ring-shaped rubber pad groove being arranged on flap valve, it is to avoid water is along back of pipeline Stream.
The invention also discloses the construction method of the above-mentioned automatic flap valve of irrigation and drainage water pump, its feature includes following technique and step Rapid:
1) installation of irrigation and drainage water pump is with the installation of conventional water pump, the mounted water pump water outlet mouth of pipe is set to top and turns forward Oblique outlet, its angle of inclination is 40-80 °, and preferred angle of inclination is 45 °, arranges on the tube wall of pump outlet bottom Bearing, bearing is provided with connecting hole;
2) connecting hole of the connecting hole of bearing with the support on counter-jib is flexibly connected with axle;
3) by the connecting hole of flap valve connector, flap valve being arranged on counter-jib front end with axle, flap valve is provided with pad, pad Sheet is provided with groove;
4) active connection is connected to counter-jib rear end by axle, is provided with counterweight connector in active connection bottom, Counterweight connector lower end connects spherical weights body;
5) after above-mentioned 4 steps set, flap valve is fitted on outlet, and when opening water pump, current are washed open outside outlet Flap valve, flap valve lies in outlet bottom, and balancing the post-brachial balance weight body flap valve with front portion is front in support, bearing junction Back balance state, flap valve does not affect outlet, does not has resistance, water pump to stop pumping to water outlet, owing to the effect of backwater power makes bat Door automatically lifts and closes on outlet, and the front end tube wall of outlet is tight with the ring-shaped rubber pad groove being arranged on flap valve Laminating, it is to avoid water refluxes along pipeline.
Beneficial effect
The present invention has following technical effect that after using above technical scheme that in device of the present invention, flap valve is arranged on water Pumping out bottom, the mouth of a river, when pump working, flap valve is opened under hydraulic impact effect, lies in outlet bottom, therefore to going out Mouth of a river resistance is less, and water pump stops pumping, owing to right-hand member moment is bigger and the effect of backwater pulling force makes flap valve automatically lift Guan Bi On outlet, the tube wall of outlet fits tightly, particularly added with magnetic with the ring-shaped rubber pad groove being arranged on flap valve Property pad and groove, can with outlet absorption tightr, it is to avoid water along pipeline reflux, compared with prior art, this Invention can saves energy.
Accompanying drawing explanation
Fig. 1 is the closure state side structure schematic diagram of the automatic flap valve of irrigation and drainage water pump of the present invention;
Fig. 2 is the left view structural representation of Fig. 1;
Fig. 3 is the perspective view of Fig. 2;
Fig. 4 is the flap valve open mode structural representation of Fig. 1;
Fig. 5 is the flap valve open mode perspective view of Fig. 4;
Fig. 6 is that flap valve closes rearward recess and outlet front end tube wall bonding state structural representation;
Fig. 7 is that flap valve opens perspective view at poised state flap valve connector, it is seen that flap valve connects the gear on sheet Chip architecture.
Wherein, 1-outlet, 2-pad, 3-flap valve, 4-flap valve connector, 5-counter-jib, 6-bearing, 7-axle, 8-supports, 9-active connection, 10-counterweight connector, 11-balance weight body, 21-groove, 31-spacer groove, 41-catch.
Detailed description of the invention
Purpose and technical scheme for making the application are clearer, carry out the technical scheme of the application below in conjunction with accompanying drawing Clearly and completely describe.Described embodiment is a part of embodiment of the application rather than whole embodiments, based on Described embodiments herein, it is all that those of ordinary skill in the art are obtained on the premise of without creative work Other embodiments, broadly fall into the scope of the application protection.
Embodiment 1: with reference to accompanying drawing, a kind of automatic flap valve of irrigation and drainage water pump, including pump outlet 1 be arranged on outlet Flap valve 3, described pump outlet 1 bottom is provided with bearing 6, and counter-jib 5 is movably connected on bearing 6, counter-jib 5 upper end connect Flap valve 3, flap valve 3 is blocked on outlet 1, and counter-jib 5 lower end is provided with counterweight connector 10, and counterweight connector 10 connects balance weight body 11。
Further, described flap valve 3 is provided with pad 2, and described pad 2 is annular gasket, and described annular gasket is provided with Two annular protrusions, are provided with groove 21, described groove 21 and outlet 1 front end tube wall between two described annular protrusions Coordinate closely.
Further, described outlet 1 is set to tilt the water surface, and its angle of inclination is 40-80 °, it is preferred that inclination angle Degree is 45 °.
Preferably, described counter-jib 5 is provided with support 8, supports 8 and is flexibly connected by axle 7 with bearing 6.
Preferably, described flap valve 3 is provided with air ring film trap 31, and pad 2 is arranged in air ring film trap 31.
Further, described balance weight body 11 is metal or nonmetal spheroid or cuboid, it is preferred that balance weight body 11 is ball Type cast iron.
Further, described flap valve 3 back side circle centre position is provided with flap valve connector 4, and flap valve connector 4 is provided with connection Hole, the top 2-5cm distance at described connecting hole is provided with catch 41, and this distance can ensure that flap valve 3 has certain activity Space, catch 41 can stop that flap valve 3, prevention flap valve 3 are turned to below counter-jib 5 top or counter-jib 5 after opening.
Further, described pad 2 is quality of rubber materials, and the groove 21 that it coordinates with outlet 1 front end tube wall is latex Material, uses softer material, it is ensured that groove 21 is tightr with what outlet 1 was fitted, it is preferred that described pad 2 is Rubber adds magnetic powder material, and groove 21 adds magnetic powder material for latex, and magnetic pad 2 and groove 21 can preferably adsorb at steel On the outlet 1 of iron material matter;Pad 2 uses gluing or pressing plate to be fixed in supporting flap valve spacer groove 31.
The present embodiment also discloses the manufacture method of a kind of automatic flap valve of irrigation and drainage water pump, including pump outlet 1 and setting Flap valve 3 on outlet 1, its feature includes following technique and step:
1) first making flap valve 3, flap valve 3 makes for steel plate, and its diameter is more than supporting pump outlet about 10cm, I.e. flap valve 3 the most all protrude outside about the 5cm of outlet 1 tube wall, at itself and pump outlet 1 contact surface, pad is set Groove 31, is fixed on ring-shaped rubber pad 2 in this spacer groove 31, and at flap valve 3 back side, circle centre position arranges flap valve connector 4, flap valve Connector 4 is provided with connecting hole, and the top 2-5cm distance at described connecting hole arranges catch 41;
2) being set to tilt the mouth of a river 1 by the water pump water outlet mouth of pipe, its angle of inclination is 40-80 °, and preferred angle of inclination is 45 °, arranging bearing 6 on the tube wall of pump outlet 1 bottom, bearing 6 is provided with connecting hole;
3) counter-jib makes: counter-jib 5 is rectangle, arranges support 8 at counter-jib 5 bottom 3/4, supports 8 companies of being provided with Connect hole, be movably connected on bearing 6 with axle 7, connecting hole is set at the distance top 5-10cm of counter-jib 5 top, movable with axle 7 It is connected on flap valve connector 4;Active connection 9 is set in counter-jib 5 lower end, active connection 9 arranges counterweight and connects Part 10, arranges balance weight body 11 in counterweight connector 10 lower end;
4) balance weight body makes: balance weight body 11 is the spheroplast of iron casting, at an upper portion thereof a piece rectangular steel pipe conduct of welding Connecting the counterweight connector 10 of active connection 9, arrange active connection on counterweight connector 10 top, active connection 9 leads to Cross axle 7 to be flexibly connected with counter-jib 5 lower end;
5) pad makes: the pad 2 described in step 1 is made for rubber note or added magnetic powder note in rubber and makes, described annular Groove 21 uses softer bipeltate or latex to make, or also adds magnetic powder making in bipeltate or latex, will pad Sheet 2 sticks with glue or pressing plate is fixed in supporting flap valve spacer groove 31;
6) application of flap valve: when opening water pump, current wash the flap valve 3 outside outlet 1 open, and flap valve 3 lies in outlet 1 Bottom, the balance weight body 11 at counter-jib 5 rear portion is anterior-posterior balance state with anterior flap valve 3 in bearing 6 junction, flap valve 3 not shadow Ringing outlet 1, less to water resistance, water pump stops pumping, and closes at out owing to the effect of backwater power makes flap valve 3 automatically lift On the tube wall of front end, the mouth of a river 1, the tube wall of outlet 1 fits tightly with ring-shaped rubber pad 2 groove 21 being arranged on flap valve 3, keeps away Exempt from water to reflux along pipeline.
The present embodiment also discloses the construction method of a kind of automatic flap valve of irrigation and drainage water pump, and its feature includes following technique and step Rapid:
1) installation of irrigation and drainage water pump is with the installation of conventional water pump, the mounted water pump water outlet mouth of pipe is set to top and turns forward Oblique outlet 1, its angle of inclination is 40-80 °, and preferred angle of inclination is 45 °, sets on the tube wall of pump outlet 1 bottom Putting bearing 6, bearing 6 is provided with connecting hole;
2) connecting hole of the connecting hole of bearing 6 with the support 8 on counter-jib 5 is flexibly connected with axle 7;
3) by the connecting hole of flap valve connector 4, flap valve 3 being arranged on counter-jib 5 front end with axle 7, flap valve 3 is provided with pad Sheet 2, pad 2 is provided with groove 21;
4) active connection 9 is connected to counter-jib 5 rear end by axle 7, is provided with counterweight connector in active connection 9 bottom 10, connect in counterweight connector 10 lower end and have spherical weights body 11;
5) after above-mentioned 4 steps set, flap valve 3 is fitted on outlet 1, and when opening water pump, current are washed open outside outlet 1 Flap valve 3, flap valve 3 lies in outlet 1 bottom, the balance weight body at counter-jib 5 rear portion 11 and anterior flap valve 3 supporting 8, bearing 6 junctions are anterior-posterior balance state, and flap valve 3 does not affect outlet, do not have resistance, water pump to stop pumping, due to backwater to water outlet The effect of power makes flap valve 3 automatically lift to close on outlet 1, the front end tube wall of outlet 1 and the annular being arranged on flap valve 3 Rubber sheet gasket groove 21 fits tightly, it is to avoid water refluxes along pipeline.
Above-described embodiment counter-jib, torque arm length, flap valve, counterweight be respectively: supporting 8 front portions is 60 centimeters, supports 8 rear portions Being 20 centimeters, flap valve 3 mass is 20 kilograms, and supporting 8 anterior counter-jib 5 mass is 3 kilograms, and supporting 8 rear portion counter-jib 5 mass is 1 kilogram, balance weight body 11 mass is 64.5 kilograms, and water pump water outlet actinal surface and horizontal plane angle are 45 °, and left side moment is M1, right side Moment is M2, and the impact of equipment frictional force, buoyancy of water and current rotation nest is disregarded.
When drawing water, counter-jib 5 is in level, two end moments are:
M1=20*9.8*0.6+3*9.8*0.3=126.42 cattle rice
M2=64.5*9.8*0.2+1*9.8*0.1=127.40 cattle rice
Because two end moments are more or less the same, so the head of water pump water outlet is affected less by flap valve.
When water pump is cut off the water, owing to right-hand member moment is bigger and the effect of backwater pulling force makes flap valve 3 automatically be combined in pump line water outlet On mouthful 1, at this moment counter-jib supports the moment at 8 two ends and is:
M1=20*9.8*0.30+3*9.8*0.15=63.21 cattle rice
M2=64.5*9.8*0.1+1*9.8*0.05=63.70 cattle rice
Right-hand member moment is more than left end moment, so flap valve is in stable closed state after closing.
In order to regulate right-hand member moment size, counterweight ball-type cast iron can left and right fine setting on counter-jib.Because Model of pump is different, Outlet size is the most different, according to above-described embodiment, size and the weight of automatic flap valve can be done corresponding adjustment.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein, including technology art Language and scientific terminology, have with the those of ordinary skill in the application art be commonly understood by identical meaning.Also should Being understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art The meaning that justice is consistent, and unless defined as here, will not explain by idealization or the most formal implication.
The implication of " inside and outside " described herein refers to relative to equipment itself, the side within sensing equipment To for interior, otherwise it is outward.
The implication of " connection " described herein can be being directly connected between parts can also be to pass through between parts Being indirectly connected with of other parts.
With the above-mentioned desirable embodiment according to the application for enlightenment, by above-mentioned description, relevant staff is complete Entirely can carry out various change and amendment in the range of without departing from this application technological thought.The technology of this application The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.

Claims (4)

1. a construction method for the automatic flap valve of irrigation and drainage water pump, its feature includes following technique and step:
1) installation of irrigation and drainage water pump is with the installation of conventional water pump, and the mounted water pump water outlet mouth of pipe is set to what top turned forward Outlet, its angle of inclination is 40-80 °, arranges bearing on the tube wall of pump outlet bottom, and bearing is provided with connecting hole;
2) connecting hole of the connecting hole of bearing with the support on counter-jib is flexibly connected with axle;
3) by the connecting hole of flap valve connector, flap valve being arranged on counter-jib front end with axle, flap valve is provided with pad, and pad sets Fluted, described pad is quality of rubber materials, and its groove coordinated with outlet tube wall is latex material;
4) active connection is connected to counter-jib rear end by axle, is provided with counterweight connector in active connection bottom, in counterweight Connector lower end is provided with metal weights body;
5) after above-mentioned 4 steps set, flap valve is fitted on outlet, and when opening water pump, current wash the flap valve outside outlet open, Flap valve lies in outlet bottom, balances the post-brachial balance weight body flap valve with front portion in support, bearing junction for front and back to put down Weighing apparatus state, flap valve does not affect outlet, does not has resistance, water pump to stop pumping to water outlet, owing to the effect of backwater power makes flap valve certainly Dynamic lifting closes on outlet, and the front end tube wall of outlet closely pastes with the ring-shaped rubber pad groove being arranged on flap valve Close, it is to avoid water refluxes along pipeline.
The construction method of the automatic flap valve of irrigation and drainage water pump the most according to claim 1, it is characterised in that described pad is for coordinating The annular gasket of pump outlet, annular gasket is provided with two annular protrusions, is provided with groove between two annular protrusions, described Groove coordinates closely with outlet front end tube wall.
The construction method of the automatic flap valve of irrigation and drainage water pump the most according to claim 1 or claim 2, it is characterised in that described flap valve sets Air ring film trap, described annular gasket is had to be arranged in air ring film trap.
The construction method of the automatic flap valve of irrigation and drainage water pump the most according to claim 1, it is characterised in that described balance weight body is gold Belong to spheroid.
CN201610510916.0A 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of irrigation and drainage water pump Expired - Fee Related CN106149648B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610510916.0A CN106149648B (en) 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of irrigation and drainage water pump

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CN201510098171.7A CN104674775B (en) 2015-03-05 2015-03-05 The automatic flap valve of irrigation and drainage water pump and its manufacture and construction method
CN201610510916.0A CN106149648B (en) 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of irrigation and drainage water pump

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CN106149648B CN106149648B (en) 2018-12-14

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CN201610511166.9A Active CN106121997B (en) 2015-03-05 2015-03-05 The construction method of the automatic flap valve of irrigation and drainage water pump
CN201511019601.8A Expired - Fee Related CN105568941B (en) 2015-03-05 2015-03-05 A kind of manufacturing method of the automatic flap valve of irrigation and drainage water pump
CN201610510916.0A Expired - Fee Related CN106149648B (en) 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of irrigation and drainage water pump
CN201511023929.7A Active CN105422434B (en) 2015-03-05 2015-03-05 The manufacture method of the automatic flap valve of irrigation and drainage water pump
CN201610511152.7A Active CN106120681B (en) 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of water pump
CN201511021970.0A Expired - Fee Related CN105626508B (en) 2015-03-05 2015-03-05 The manufacturing method of the automatic flap valve of water pump
CN201510098171.7A Expired - Fee Related CN104674775B (en) 2015-03-05 2015-03-05 The automatic flap valve of irrigation and drainage water pump and its manufacture and construction method
CN201511018863.2A Expired - Fee Related CN105545722B (en) 2015-03-05 2015-03-05 The construction method of the automatic flap valve of irrigation and drainage water pump

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CN201610511166.9A Active CN106121997B (en) 2015-03-05 2015-03-05 The construction method of the automatic flap valve of irrigation and drainage water pump
CN201511019601.8A Expired - Fee Related CN105568941B (en) 2015-03-05 2015-03-05 A kind of manufacturing method of the automatic flap valve of irrigation and drainage water pump

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CN201511023929.7A Active CN105422434B (en) 2015-03-05 2015-03-05 The manufacture method of the automatic flap valve of irrigation and drainage water pump
CN201610511152.7A Active CN106120681B (en) 2015-03-05 2015-03-05 A kind of construction method of the automatic flap valve of water pump
CN201511021970.0A Expired - Fee Related CN105626508B (en) 2015-03-05 2015-03-05 The manufacturing method of the automatic flap valve of water pump
CN201510098171.7A Expired - Fee Related CN104674775B (en) 2015-03-05 2015-03-05 The automatic flap valve of irrigation and drainage water pump and its manufacture and construction method
CN201511018863.2A Expired - Fee Related CN105545722B (en) 2015-03-05 2015-03-05 The construction method of the automatic flap valve of irrigation and drainage water pump

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CN106121997B (en) * 2015-03-05 2018-11-13 泗洪仁益自来水有限公司 The construction method of the automatic flap valve of irrigation and drainage water pump
CN107750922A (en) * 2017-12-19 2018-03-06 运城清海科技有限公司 A kind of plant preserves the non-return valve of blue or green tank
CN110453651A (en) * 2019-09-10 2019-11-15 扬州大学 A kind of butterfly valve type flap valve and its application method for reversible passage

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CN105568941A (en) 2016-05-11
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CN105545722B (en) 2018-03-23
CN105626508B (en) 2018-05-18
CN105545722A (en) 2016-05-04
CN105568941B (en) 2018-07-20
CN105422434A (en) 2016-03-23
CN106121997A (en) 2016-11-16
CN106149648B (en) 2018-12-14
CN106120681B (en) 2018-12-07
CN106120681A (en) 2016-11-16
CN105422434B (en) 2018-05-11
CN104674775B (en) 2017-08-25
CN106121997B (en) 2018-11-13

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