CN201126025Y

CN201126025Y - Electromagnetic water valves

Info

Publication number: CN201126025Y
Application number: CNU2007201907026U
Authority: CN
Inventors: 刘鑫; 高举峰; 贾红涛
Original assignee: BEIJING KANGTUO SCIENCE & TECHNOLOGY DEVELOPMENT CORP
Current assignee: BEIJING KANGTUO SCIENCE & TECHNOLOGY DEVELOPMENT CORP
Priority date: 2007-12-11
Filing date: 2007-12-11
Publication date: 2008-10-01
Anticipated expiration: 2017-12-11

Abstract

The utility model discloses an electromagnetic water valve which is mainly composed by a valve cover, a shell, a cavity surrounded by the valve cover and a lower shell, a film, a water admitting pipe, a water rising pipe, a water inflow hole, a water outflow hole, a valve shaft, a valve head and a spring,; the water admitting pipe is provided between the water inflow hole and the cavity and the water rising pipe is provided between the water outflow hole and the cavity in order to realize slow open and close of the electromagnetic water valve door in corresponding to two states of open and close, thus preventing water hammer. The valve door can maintain flexible movements by providing the film at an end of a valve rod near the valve cover. The maintenance and check to the electromagnetic valve can be performed conveniently by control the liquid in the water admitting pipe via a ball valve. The electromagnetic water valve of the utility model has simple structure and convenient installation, which can be extensively applied to control of normal temperature water in various industrial fields.

Description

A kind of electromagnetism water valve

Technical field

The present invention relates to a kind of valve that is applied to switch control occasion, specifically be meant a kind of diaphragm type electromagnetism water valve.

Background technique

Be widely used in the fluid-control starting and stopping valve on the water circulating pipe at present, often because of being ended suddenly, swiftly flowing current produce water hammer at valve closing, cause taking place strong sound equipment and vibration, and the design of piston all is a metal material in traditional valve, and using of a specified duration will influence the proper functioning of valve because piston gets rusty.Utility model patent file 00208409.0 discloses a kind of anti-water attack fluid-control starting and stopping valve, its described keying valve is by being provided with filter screen, solved sewage handling problem, and in the lower right corner of valve body safety valve is set and reduces water attack, but water attack has been transferred on the safety valve from valve, therefore do not eliminate water hammer completely, because water valve all is metal material usually, therefore after normal-temperature water is flowed through valve body, the valve body piston can influence the proper functioning of valve because get rusty, and in valve closing, can produce very big water attack, can reduce surge pressure by being provided with of safety valve, therefore but this pressure is to be controlled by the spring force of safety valve completely, needs frequent replacing spring, also can exert an influence for the sealing effect of valve body.

Summary of the invention

The purpose of this invention is to provide a kind of electromagnetism water valve that can prevent that water attack and valve get rusty, replace original metallic piston by in the middle of the pallet of valve, an elastomer diaphragm being set, prevent that valve from getting rusty, and the principle of application hydraulic control reduces the infringement that surge pressure causes to valve.

Electromagnetism water valve of the present utility model is made up of valve gap, valve shaft, nut, seal ring A, pallet, axle sleeve, seal ring B, seal ring C, diaphragm, seal ring D, lower casing, pressing plate, valve port pad, valve head, pin, spring, housing, screw, intake pipe, outlet pipe, flow inlet, water export, cavity, hole A, hole B, hole C, ball valve, solenoid valve.Diaphragm is fixed in the middle of valve gap and the lower casing, and is supported by two pallets, and valve gap is connected with housing with lower casing by screw, intake pipe one end communicates with flow inlet, the other end inserts valve gap and communicates with cavity, and outlet pipe one end communicates with water export, and the other end inserts valve gap and communicates with cavity.Valve head is provided with at flow inlet and water export intermediate, inclined.

Water valve of the present utility model can be applicable to normal-temperature water medium switch control occasion, this valve utilizes the difference of the hydraulic pressure before and after the valve to drive valve, make the steady opening and closing of valve can not produce pressure surge, water valve adopts the diaphragm type design, has solved because of piston gets rusty and has made the inflexible problem of valve event.This valve adopts straight-through type design, and flow resistance is little, and is easy for installation, in order to substitute cost high, safeguard the complicated adjusting valve.The novel control that can be widely used in the industrial field normal-temperature water of this use.

The invention has the advantages that:

(1) the utility model electromagnetism water valve adopts the design of rubber membrane chip to solve because of piston gets rusty and makes the inflexible problem of valve event;

(2) electromagnetism water valve of the present utility model does not need to drive source of the gas, with a two-bit triplet electromagnetic valve valve, utilizes the difference of valve front and back hydraulic pressure to realize opening or closing of valve;

(3) can realize opening slowly of valve smoothly by the switching frequency of adjusting solenoid valve and close slowly.Thoroughly solved the water attack problem that other switch valve is caused when opening and closing;

(4) diaphragm has weak acid resistant weak base, long, free of contamination characteristics of life-span.

Description of drawings

Fig. 1 is the structural representation of the utility model electromagnetism water valve;

Fig. 2 is the structure sectional view of the utility model electromagnetism water valve;

Fig. 3 is the plan structure figure of diaphragm in the utility model;

Fig. 4 is the side-looking structural drawing of diaphragm in the utility model.

Among the figure:

1 valve gap, 2 valve shafts, 3 nuts, 4 seal ring A, 5 pallets

6 axle sleeves, 7 seal ring B, 8 seal ring C, 9 diaphragms, 10 seal ring D

11 lower casings, 12 pressing plates, 13 valve port pads, 14 valve heads, 15 pins

16 springs, 17 housings, 18 screws, 19 intake pipes, 20 outlet pipes

21 flow inlets, 22 water exports, 23 cavitys, 24 hole A, 25 hole B

902 bottom surfaces, 26 hole C, 27 ball valve 28 solenoid valves, 901 edges

29 hole D, 30 valves

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

The utility model is a kind of electromagnetism water valve, and its structural representation as shown in Figure 1.Electromagnetism water valve of the present utility model is the electromagnetic valve structure of a two-bit triplet, the structure sectional view of described electromagnetism water valve as shown in Figure 2, the electromagnetism water valve is made up of valve gap 1, valve shaft 2, nut 3, seal ring A4, pallet 5, axle sleeve 6, seal ring B7, seal ring C8, diaphragm 9, seal ring D10, lower casing 11, pressing plate 12, valve port pad 13, valve head 14, pin 15, spring 16, housing 17, screw 18, intake pipe 19, outlet pipe 20, flow inlet 21, water export 22, cavity 23, hole A24, hole B25, hole C26, ball valve 27, solenoid valve 28.The top position of valve gap 1 is provided with solenoid valve 28, and solenoid valve 28 is used for the switch of control valve 30, and solenoid valve 28 is in open mode at ordinary times.The center of valve gap 1 and solenoid valve 28 corresponding positions have hole A24, one end of intake pipe 19 communicates with flow inlet 21, the other end inserts valve gap 1 by solenoid valve 28, communicate with cavity 23 by hole A24, one end of outlet pipe 20 communicates with water export 22, the other end inserts valve gap 1 by solenoid valve 28, communicates with cavity 23 by hole A24.Be fixedly connected on the lower casing 11 by screw 18 around the circular valve gap 1, the fixing circular film 9 also in the centre of lower casing 11 and valve gap 1, the plan view of diaphragm is as shown in Figure 3.Diaphragm 9 is fixed in the middle of valve gap 1 and the lower casing 11, and supports by pallet 5.The centre of diaphragm 9 has the hole B25 that matches with valve shaft 2 diameters, so that diaphragm 9 is connected on the valve shaft 2, circumference at diaphragm 9 is provided with the hole C26 quantitatively identical with valve gap 1, so that diaphragm 9 can be fixed between valve gap 1 and the lower casing 11, is to connect by screw 18 between the three.In the upper and lower surface of diaphragm 9, also be connected with two pallets 5 respectively, and be fixed on the valve shaft 2 by the screw thread on the valve shaft 2.Because diaphragm adopts Ethylene Propylene Terpolymer, nitrile rubber elastomeric material to make,, make it in the process that valve shaft 2 moves up and down, not deform and tear so need pallet 5 to fix diaphragm 9.Can see as Fig. 4, diaphragm 9 bottom surfaces 902 and edge 901 be not on same horizontal plane, the edge 901 of diaphragm 9 is fixed between valve gap 1 and the lower casing 11 by screw 18, but the height of bottom surface 902 will be lower than edge 901 height, and such design can reduce the wearing and tearing that diaphragm 9 produces because of the friction between diaphragm 9 and the lower casing 11 in the movement process repeatedly of valve shaft 2.Because the existence of diaphragm 9 replaces original piston, therefore having avoided in the past conventional piston to get rusty influence the generation of the phenomenon of valve working.The bottom of being close to lower casing 11 is the axle sleeve 6 of valve shaft 2, between axle sleeve 6 inwalls and the valve shaft 2 seal ring B7 is arranged, between axle sleeve 6 outer walls and the lower casing 11 seal ring C8 is arranged, between lower casing 11 and the housing 17 seal ring D10 is arranged, fixedly connected by screw 18 between lower casing 11 and the housing 17.The lower end of valve shaft 2 is connected by pin 15 with valve head 14, and between valve head 14 and lower casing 11, fix a spring 16, axial and valve shaft 2 parallel to an axiss of spring 16, valve head 14 is provided with valve port pad 13 with housing 17 touching positions, the front end of valve head 14 also is fixedly connected with a pressing plate 12, pressing plate 12 has trapezium structure, can limit the swing of valve shaft 2.

Shown in Figure 2 is the schematic representation of electromagnetism water valve of the present utility model at the valve closing state, this moment, solenoid valve 28 was in the outage open mode, intake pipe 19 communicates with flow inlet 21, cavity 23, the pressure that diaphragm 9 upper surfaces produce is more than or equal to the suffered fluid pressure of valve head 14, so the valve 30 of electromagnetism water valve can closely be closed.

Solenoid valve 28 energisings are closed when giving, intake pipe 19 closures, outlet pipe 20 is opened, because the pressure in the cavity 23 is bigger, so the liquid in the cavity 23 can flow to water export 22 by outlet pipe 20 slowly under hydraulic action, and the fluid pressure on the diaphragm 9 slowly unloads, valve head 14 slowly rises, valve 30 is slowly opened, up to the hydraulic balance of flow inlet 21 with water export 22, liquid smooth flow.

In the time of the needs throttle down, solenoid valve 28 outages are opened, this moment, outlet pipe 20 was closed, intake pipe 19 is opened, pressure in the cavity 23 is little and pressure flow inlet 21 is bigger, therefore the liquid at flow inlet 21 places flows to cavity 23 inside by intake pipe 19, diaphragm 9 promotes valve shaft 2 and moves downward owing to being subjected to hydraulic pressure, it is downward that valve shaft 2 drives valve head 14, along with the liquid in the intake pipe 19 continues to flow to cavity 23 inside, valve head 14 meeting declines slowly, valve can slowly be closed, hydraulic pressure in cavity 23 equals the hydraulic pressure of flow inlet 21, and valve 30 is closed.

More than control liquid in the cavity 23 by switch electromagnetic valve 28, thereby can regulate the carrying hydraulic pressure on the diaphragm 9, and then the opening of valve, closure are controlled, that has realized valve changes down the pass slowly, has effectively prevented water hammer.

A manual ball valve is installed in intermediate portion at intake pipe 19, when needs carry out field-strip to solenoid valve 28, can close manual ball valve and prevent that flow inlet 21 from leaking.

Have through hole D29 on lower casing 11 and the water export 22 contacted surfaces, communicate between the liquid that hole D29 makes diaphragm 9 lower surface spaces and the water export 22, prevent to produce blind chamber.

Claims

1, a kind of electromagnetism water valve, comprise valve gap, valve shaft, lower casing, valve head, housing, intake pipe, outlet pipe, flow inlet, water export, ball valve, solenoid valve, it is characterized in that: also comprise a diaphragm, this diaphragm edge is fixed on the centre of valve gap and lower casing, and is supported by two pallets.

2, a kind of electromagnetism water valve according to claim 1, it is characterized in that: the bottom surface of described diaphragm and edge be not on same horizontal plane.

3, a kind of electromagnetism water valve according to claim 1, it is characterized in that: an end of intake pipe communicates with flow inlet, and the other end inserts in the cavity by solenoid valve, and an end of outlet pipe communicates with water export, and the other end inserts cavity by solenoid valve.

4, a kind of electromagnetism water valve according to claim 1, it is characterized in that: the intermediate portion of intake pipe is equipped with a ball valve.