CN209278577U - A kind of threaded connection diaphragm type high frequency opens and closes branch pipe non-return valve - Google Patents

Abstract

A kind of threaded connection diaphragm type high frequency opens and closes branch pipe non-return valve, including valve body, middle cover, moving parts, valve deck, spring.Middle cover is provided in the middle part of the valve body, moving parts are equipped in middle cover, the valve body top is provided with valve deck, the upper connecting pipe being connected to water outlet pipeline is equipped at bonnet central, valve body, middle cover, valve deck combines to form control chamber, the control chamber lower left corner is provided with the lower communicating tube road being connected to water inlet conduit, the moving parts are by valve rod, flap seal assembly, diaphragm device, nut composition, diaphragm device includes diaphragm top board, diaphragm and diaphragm lower platen, diaphragm top board, diaphragm and diaphragm lower platen are separated into chamber is controlled, lower chambers, spring is set between diaphragm lower platen and middle cover, advantage is: passing through diaphragm, diaphragm top board, the setting of diaphragm lower platen and spring, pipeline pressure itself control valve high-frequency opens and closes repeatedly, quick closedown when downstream pressure is excessively high is realized simultaneously Valve.

Description

A kind of threaded connection diaphragm type high frequency opens and closes branch pipe non-return valve

Technical field

The utility model relates to a kind of diaphragm type high frequencies to open and close branch pipe non-return valve, in particular to a kind of threaded connection diaphragm Formula high frequency opens and closes branch pipe non-return valve.

Background technique

Non-return valve (also known as check-valves) refers to be flowed and automatic open and close flap by medium itself, for preventing medium from falling The valve of stream, also known as non-return valve, check valve, reflux valve and counterbalance valve.Non-return valve belongs to a kind of automatic valve, and main function is It prevents medium from flowing backwards, prevent pump and drive motor reversion and vessel media from releasing.Check-valves can also be used in therein The auxiliary system that pressure may be raised above system pressure is provided on the pipeline of supply.It is more in the bye-pass of farm irrigation system at present Realize that the batch control of bye-pass, the effect of Yao Shixian non-return valve need to increase large number of equipment, with solenoid valve to reduce farmland irrigating The cost of system is irrigate, so researching and developing this utility model, realization does not use solenoid valve, with pipeline pressure itself control valve high-frequency It opens and closes repeatedly, while realizing rapid-closure damper when downstream pressure is excessively high.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provide a kind of threaded connection diaphragm type high frequency open, Close branch pipe non-return valve, including valve body, into channel, flow pass, water inlet conduit, water outlet pipeline, upper connecting pipe, lower company It threads a pipe, middle cover, O-ring, moving parts, valve deck, control chamber, upper chamber, lower chambers, valve rod, flap seal assembly, valve Valve, gasket, gasket pressing plate, diaphragm device, diaphragm top board, diaphragm, diaphragm lower platen, nut, spring.

The utility model solves technical solution used by prior art problem: being respectively set at left and right sides of the valve body Have and enter channel, flow pass, flow pass is connected to water outlet pipeline, and the channel of valve body uses single flow y-type structure, valve body It connect with water inlet conduit, water outlet pipeline and is connected using pipe screw thread, be provided with middle cover in the middle part of the valve body, middle cover center is equipped with Through-hole, middle cover through-hole wall are provided with twice O-ring, and moving parts are equipped in middle cover through-hole, and the valve body top is provided with Valve deck is equipped with the upper connecting pipe being connected with water outlet pipeline at bonnet central, and valve deck is bolted on valve body top, Valve body, middle cover, valve deck combine to form independent control chamber, and the control chamber lower left corner is horizontally disposed to be had and water inlet conduit The lower communicating tube road being connected.

Further, the moving parts are made of valve rod, flap seal assembly, diaphragm device, nut, and the valve rod passes through It wears middle cover to be inclined to set, valve rod upper and lower side is external thread structure, and the valve rod lower end is equipped with flap seal assembly, flap sealing Component is located at the connectivity part into channel and flow pass of valve body, and flap seal assembly is fixed on valve rod lower end by nut, The valve rod upper end is equipped with diaphragm device, and diaphragm device is located in control chamber room, and diaphragm device is fixed on valve rod by nut End.

Further, the flap seal assembly includes flap, gasket and gasket pressing plate, and flap is located on gasket Side, gasket pressing plate are located at below gasket.

Further, the diaphragm device includes diaphragm top board, diaphragm and diaphragm lower platen, diaphragm top board, diaphragm It is from top to bottom sequentially arranged with diaphragm lower platen, diaphragm is inlaid between valve body top and valve deck, under diaphragm top board and diaphragm Pressing plate is the circular ring structure with internal thread through hole, and diaphragm top board and the internal thread through hole and valve rod of diaphragm lower platen are upper and lower The external thread structure at end matches, and diaphragm top board, diaphragm and diaphragm lower platen are separated into upper chamber, cavity of resorption for chamber is controlled Room is set with spring between the diaphragm lower platen and middle cover of bottom chamber.

The beneficial effects of the utility model are: combine to form independent control chamber by valve body, middle cover, valve deck, then by Diaphragm, diaphragm top board, diaphragm lower platen are separated into upper chamber and lower chambers for chamber is controlled, the pressure between epicoele and cavity of resorption Official post diaphragm extensional motion drives entire moving parts to move up or down, and realizes the opening and closing of valve, in middle cover under Pocketed springs between pressing plate make valve keep valve in no pipeline pressure since diaphragm moves up under the action of spring force Open state, realization do not used solenoid valve, opened and closed repeatedly with pipeline pressure itself control valve high-frequency, while real Rapid-closure damper when now downstream pressure is excessively high.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the scheme of installation of the utility model；

Fig. 3 is the structural schematic diagram of the utility model moving parts；

In figure, 1. valve bodies, 101. enter channel, 102. flow pass, 103. water inlet conduits, 104. water outlet pipelines, Connecting pipe on 105., 106. lower communicating tube roads, 2. middle covers, 3.O type circle, 4. moving parts, 5. valve decks, 6. control chambers, 601. upper chamber, 602. lower chambers, 7. valve rods, 8. flap seal assemblies, 801. flaps, 802. gaskets, 803. gasket pressures Plate, 9. diaphragm devices, 901. diaphragm top boards, 902. diaphragms, 903. diaphragm lower platens, 10. nuts, 11. springs.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing and embodiment, as shown in fig. 1, a kind of spiral shell Line connection diaphragm type high frequency opens and closes branch pipe non-return valve, including valve body 1, middle cover 2, O-ring 3, moving parts 4, valve deck 5, spring 11。

It is respectively arranged at left and right sides of the valve body 1 into channel 101, flow pass 102, into channel 101 and water inlet Mouth pipeline 103 is connected to, and flow pass 102 is connected to water outlet pipeline 104, and the channel of valve body 1 uses single flow y-type structure, valve Body 1 is integral casting forming, and valve body 1 is connect with water inlet conduit 103, water outlet pipeline 104 to be connected using pipe screw thread, the valve Middle cover 2 is provided in the middle part of body 1, middle cover center is equipped with through-hole, and 2 through-hole wall of middle cover is provided with twice O-ring 3, and O-ring 3 is used to It realizes the sealing reliability of valve high-frequency on off action, is equipped with moving parts 4,1 top of valve body in 2 through-hole of middle cover It is provided with valve deck 5, is equipped with the upper connecting pipe 105 being connected with water outlet pipeline 104 at 5 center of valve deck, valve deck 5 passes through bolt It is fixed on 1 top of valve body, valve body 1, middle cover 2, the combination of valve deck 5 form independent control chamber 6,6 lower left corner of control chamber It is horizontally disposed to have the lower communicating tube road 106 being connected with water inlet conduit 103.

Further, the moving parts 4 are made of valve rod 7, flap seal assembly 8, diaphragm device 9, nut 10, described Valve rod 7 is inclined to set through middle cover 2, and 7 upper and lower side of valve rod is external thread structure, and 7 lower end of valve rod is equipped with flap sealing group Part 8, flap seal assembly 8 are located at the connectivity part into channel 101 and flow pass 102 of valve body 1, and flap seal assembly 8 is logical It crosses nut 10 and is fixed on 7 lower end of valve rod, 7 upper end of valve rod is equipped with diaphragm device 9, and diaphragm device 9 is located in control chamber 6, Diaphragm device 9 is fixed on 7 upper end of valve rod by nut 10.

Further, the flap seal assembly 8 includes flap 801, gasket 802 and gasket pressing plate 803, flap 801 are located at 802 top of gasket, and gasket pressing plate 803 is located at 802 lower section of gasket, when medium counter flow, flap seal assembly 8 play sealing effect, prevent medium counter flow, while the rise and fall of flap seal assembly 8 control passing through for rate-of flow.

Further, the diaphragm device 9 includes diaphragm top board 901, diaphragm 902 and diaphragm lower platen 903, on diaphragm From top to bottom sequence arranges for pressing plate 901, diaphragm 902 and diaphragm lower platen 903, and the diaphragm 902 is discoid shape and is rubber Material, diaphragm 902 are inlaid between 1 top of valve body and valve deck 4, and diaphragm top board 901 and diaphragm lower platen 903 are with interior spiral shell The internal thread through hole of the circular ring structure of line through-hole, diaphragm top board 901 and diaphragm lower platen 903 and the outer spiral shell of 7 upper and lower end of valve rod Line structure matches, diaphragm top board 901, diaphragm 902 and diaphragm lower platen 903 will control chamber 6 be separated into upper chamber 601, Lower chambers 602 are set with spring 11 between the diaphragm lower platen 903 and middle cover 2 in lower chambers 602, due to the elasticity of spring 11 Power acts on lower diaphragm 902 and moves up, and so that valve is kept the open state of valve in no pipeline pressure, upper chamber 601 is under Diaphragm 902 is set to expand movement, the expansion upward or downward of diaphragm 902 upward or downward under pressure difference effect between chamber 602 It is mobile that the flap seal assembly 8 being connected with 6 lower end of valve rod is driven to move in the same direction, realize the opening and closing movement of valve.

Working principle: when pipeline supplies water, under hydraulic pressure makes in the lower chambers 602 by the entrance of lower communicating tube road 106 valve Expansion drives entire moving parts 4 to move up to chamber 602 upwards, after water flow passes through valve body flow pass 102, passes through upper connection Pipeline 105 enters valve upper chamber 601, and upper chamber 601 and the pressure of lower chambers 602 are close to equal at this time, and hydraulic pressure is to flap The thrust of seal assembly 8 acts on lower valve with 11 thrust of spring simultaneously and keeps it turned on.

When exporting hydraulic pressure higher than water inlet pressure, 601 pressure of upper chamber is greater than 602 pressure of lower chambers, and expansionary force makes film Downwards, diaphragm 902 is fixedly connected piece 902 with valve rod 7, and valve rod 7 moves downward, due to valve rod 7 and the fixed company of flap seal assembly 8 It connects, valve rod 7, which moves downward, gives one, 8 back side of flap seal assembly active force, and flow pass 102 also gives flap sealing at this time Another active force of component 8 forces moving parts 4 to move down under two gravity, and valve is closed, and realizes non-return effect.

Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all It is included within the scope of protection of this utility model.

Claims (5)

1. a kind of threaded connection diaphragm type high frequency opens and closes branch pipe non-return valve, including valve body, middle cover, O-ring, moving parts, valve Lid, control chamber, upper chamber, lower chambers, valve rod, flap seal assembly, flap, gasket, gasket pressing plate, diaphragm device, Diaphragm top board, diaphragm, diaphragm lower platen, nut, spring, it is characterised in that: be respectively arranged at left and right sides of the valve body into Enter channel, flow pass, middle cover is provided in the middle part of the valve body, middle cover center is equipped with through-hole, and middle cover through-hole wall is provided with two Road O-ring is equipped with moving parts in middle cover through-hole, and the valve body top is provided with valve deck, is equipped at bonnet central and water outlet The upper connecting pipe that mouth pipeline is connected, valve body, middle cover, valve deck combine to form independent control chamber, and the control chamber is left Inferior horn is horizontally disposed a lower communicating tube road being connected with water inlet conduit, the moving parts by valve rod, flap seal assembly, Diaphragm device, nut composition.

2. a kind of threaded connection diaphragm type high frequency according to claim 1 opens and closes branch pipe non-return valve, it is characterised in that: institute The flow pass stated is connected to water outlet pipeline, and the channel of valve body uses single flow y-type structure, and valve body and water inlet conduit go out Pipeline connection in the mouth of a river is connected using pipe screw thread.

3. a kind of threaded connection diaphragm type high frequency according to claim 1 opens and closes branch pipe non-return valve, it is characterised in that: institute The valve rod stated is inclined to set through middle cover, and valve rod upper and lower side is external thread structure, and the valve rod lower end is equipped with flap sealing group Part, flap seal assembly are located at the connectivity part into channel and flow pass of valve body, and flap seal assembly is fixed by nut In valve rod lower end, the valve rod upper end is equipped with diaphragm device, and diaphragm device is located in control chamber room, and diaphragm device is solid by nut It is scheduled on valve rod upper end.

4. a kind of threaded connection diaphragm type high frequency according to claim 1 opens and closes branch pipe non-return valve, it is characterised in that: institute The flap seal assembly stated includes flap, gasket and gasket pressing plate, and flap is located above gasket, and gasket pressing plate is located at Below gasket.

5. a kind of threaded connection diaphragm type high frequency according to claim 1 opens and closes branch pipe non-return valve, it is characterised in that: institute The diaphragm device stated includes diaphragm top board, diaphragm and diaphragm lower platen, diaphragm top board, diaphragm and diaphragm lower platen by up to Lower sequence arrangement, diaphragm are inlaid between valve body top and valve deck, and diaphragm top board and diaphragm lower platen are that band internal screw thread is logical The circular ring structure in hole, diaphragm top board and the internal thread through hole of diaphragm lower platen and the external thread structure phase of valve rod upper and lower end Match, diaphragm top board, diaphragm and diaphragm lower platen will control chamber and be separated into upper chamber, lower chambers, under the diaphragm of bottom chamber Spring is set between pressing plate and middle cover.