CN201062673Y

CN201062673Y - Electromagnetic valve

Info

Publication number: CN201062673Y
Application number: CNU2007200802879U
Authority: CN
Inventors: 吴瑞昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2008-05-21
Anticipated expiration: 2017-07-13

Abstract

The utility model relates to a solenoid valve. The solenoid valve comprises a valve body (102), and a water inlet cavity (122) and a water outlet cavity (120) arranged in the valve body (102), wherein water inlet cavity (122) and the water outlet cavity (120) are respectively communicated with a water inlet opening (101) and a water outlet opening (110), an electromagnetic controlling component comprises a water seal component arranged at the end opening position of the water outlet cavity (120) and an execution mechanism which drives the water seal component to move reciprocally and ensures the water outlet cavity (120) and the water inlet cavity (122) to be converted under communicated and blocked states, and a reverse stopping diaphragm component is arranged between the water inlet cavity (122) and the water outlet cavity (120) for a water way to flow from the water inlet cavity (122) to the water outlet cavity (120) in one way. After the utility model is powered off, water in the solenoid valve does not generate reverse flowing, and the solenoid valve can be completely turned off.

Description

Solenoid valve

Technical field

The utility model relates to valve, relates in particular to a kind of solenoid valve that is used for domestic water purifying machine.

Background technique

Along with expanding economy, the trend that water resources situation worsens has appearred in many places, and shortage of water resources and pollution are more and more serious, and city dweller's drinking water safety problem highlights.At the secondary pollution problem of city tap-water and because source water pollutes the harmful matter that renews in tap water, more and more be that the domestic water purifying machine of core filter element enters huge numbers of families with the reverse osmosis membrane.Existing domestic water purifying machine is to be the core filter element with the reverse osmosis membrane, through after the multistage pretreatment and supercharging to tap water, enters reverse osmosis membrane unit again, the pure water that produces can meet the drinking water standard of developed country fully.

In the family expenses water purification machine, the structure of existing solenoid valve generally comprises valve body, be provided with in the valve body and water-inlet cavity, water chamber, water-inlet cavity, water chamber are connected with water intake, water outlet respectively, electromagnetic control assembly comprises the water shutoff assembly that is arranged on water chamber lower end mouth position, and driving water shutoff assembly moves back and forth the execution member that water chamber, water-inlet cavity are changed under connection, blocking-up two states.The switching state of existing solenoid valve is by after the energising, passes the magnetic bar and moves under the coil block the action of a magnetic field, and the water shutoff assembly comes the switching state of control electromagnetic valve in the black box thereby drive.But this solenoid valve is after outage disconnects, and particularly under the situation that the water chamber side hydraulic pressure is higher after the disconnection, the water-inlet cavity side hydraulic pressure is lower, solenoid valve can produce the situation that water adverse current or solenoid valve can't disconnect fully.

The model utility content

Technical problem to be solved in the utility model provides the solenoid valve that water can not produce adverse current, can disconnect fully in a kind of rear electromagnetic valve that cuts off the power supply.

The technical scheme in the invention for solving the above technical problem is: solenoid valve, comprise valve body, be provided with water-inlet cavity, water chamber in the valve body, water-inlet cavity, water chamber are connected with water intake, water outlet respectively, electromagnetic control assembly comprises the water shutoff assembly that is arranged on water chamber lower end mouth position, reach driving water shutoff assembly and move back and forth the execution member that water chamber, water-inlet cavity are changed under connection, blocking-up two states, be provided with the check diaphragm unit of water route between described water-inlet cavity and water chamber by water-inlet cavity single flow direction water chamber.

Working principle of the present utility model is: solenoid valve is when energising, and electromagnetic control assembly control water chamber, water-inlet cavity are in the state of connection, normally circulates in the assurance water route.When solenoid valve cuts off the power supply, electromagnetic control assembly control water chamber, water-inlet cavity are in the state of blocking-up, even the hydraulic pressure in the water chamber is higher at this moment, greater than the hydraulic pressure in the water-inlet cavity, owing between water chamber and water-inlet cavity, be provided with the check diaphragm unit of water route by water-inlet cavity single flow direction water chamber, water can not produce the adverse current phenomenon yet in the solenoid valve, has further guaranteed the Security and the reliability of solenoid valve work.

Be provided with the transition water cavity between described water-inlet cavity, water chamber.After the transition water cavity is set, electromagnetic control assembly comprises the water shutoff assembly that is arranged on transition water cavity lower end mouth position, reach driving water shutoff assembly and move back and forth the execution member that water-inlet cavity, transition water cavity are changed under connection, blocking-up two states, be provided with the check diaphragm unit of water route between transition water cavity upper end-hole and water chamber by water-inlet cavity single flow direction water chamber.

Described check diaphragm unit is made of unidirectional water shutoff diaphragm and connecting rod, and connecting rod is fixedly connected on unidirectional water shutoff diaphragm on the valve body.

Described unidirectional water shutoff diaphragm protrudes to water-inlet cavity side or transition water cavity side.

Described unidirectional water shutoff diaphragm is spherical shape diaphragm or disc-shaped diaphragm.

Described check diaphragm unit comprises check water shutoff diaphragm, backing plate and resilient member, the check water shutoff mouth coupling of check water shutoff diaphragm and water chamber lower end mouth also is fixed on the backing plate, resilient member one end acts on backing plate, and the other end acts on the valve body relative with backing plate.

To sum up, the beneficial effects of the utility model are: solenoid valve of the present utility model is provided with the check diaphragm unit of water route by water chamber single flow direction water outlet between water-inlet cavity and water chamber, therefore the interior water of rear electromagnetic valve that cuts off the power supply can not produce adverse current, and solenoid valve can disconnect fully.

Description of drawings

Fig. 1 is the utility model embodiment 1 a structural representation;

Fig. 2 is the utility model embodiment 2 a structural representation.

Embodiment

Embodiment 1:

With reference to shown in Figure 1, solenoid valve of the present utility model comprises valve body 102, be provided with water-inlet cavity 122 in the valve body 102, water chamber 120, transition water cavity 121, water-inlet cavity 122, water chamber 120 respectively with water intake 101, water outlet 110 is connected, electromagnetic control assembly comprises the water shutoff assembly that is arranged on transition water cavity 121 lower end mouth positions, and drive the water shutoff assembly and move back and forth and make water-inlet cavity 122, transition water cavity 121 is being communicated with, the blocking-up two states is the execution member of conversion down, and 120 of transition water cavity 121 upper end-hole and water chambers are provided with the check diaphragm unit of water route by water-inlet cavity 122 single flow direction water chambers 120; Described water shutoff assembly comprises that its upper end can constitute the sealing gasket 112 of sealing to transition water cavity 121 lower end water shutoff mouths 103, and is fixed on the pressing plate 113 on sealing pad 112 lower end surfaces, and the lower end mouth of water-inlet cavity 122 is by 118 sealings of water shutoff sleeve; Described execution member comprises the coil block 117 that is arranged on outside the water shutoff sleeve 118; Described sealing gasket 112 and pressing plate 113 with transition water cavity 121 lower end mouth, the corresponding position of water-inlet cavity 122 ports on offer leading discharge orifice 111, secondary pod apertures 119 respectively; Be provided with the biography magnetic bar 115 that drives by coil block 117 in the described water shutoff sleeve 118, it is coaxial with leading discharge orifice 111 that this passes magnetic bar 115, its upper end portion is provided for sealing the sealing head 114 of leading discharge orifice 111 lower end mouth, and is provided with spring 116 between its lower end and water shutoff sleeve 118 diapires; Described check diaphragm unit comprises check water shutoff diaphragm 109, backing plate 106 and resilient member 108, check water shutoff mouth 105 couplings of check water shutoff diaphragm 109 and water chamber 120 lower end mouth (being that check water shutoff diaphragm 109 can play under hydraulic pressure and spring acting in conjunction the sealing of check water shutoff mouth 105 or the effect of connection) also are fixed on the backing plate 106, spring 108 1 ends act on backing plate 106, and the other end acts on the valve body 102 relative with backing plate 106.

Embodiment 2:

With reference to shown in Figure 2, present embodiment and embodiment's 1 difference is that the structure of check diaphragm unit is inequality.The check diaphragm unit 208 of present embodiment is made of unidirectional water shutoff diaphragm 209 and connecting rod 206, connecting rod 206 is fixedly connected on unidirectional water shutoff diaphragm 209 on the valve body 102, the end that connecting rod 206 is fixed in valve body 102 is provided with screens projection 205 and is fixed on reliability on the valve body to increase connecting rod, be provided with the water port 104 that is subjected to unidirectional water shutoff diaphragm 209 sealings between transition water cavity and water chamber, unidirectional water shutoff diaphragm protrudes to water-inlet cavity side or transition water cavity side, specifically can select spherical shape diaphragm (diaphragm of curve form all can) or disc-shaped diaphragm.

Claims

1. solenoid valve, comprise valve body (102), be provided with water-inlet cavity (122) in the valve body (102), water chamber (120), water-inlet cavity (122), water chamber (120) respectively with water intake (101), water outlet (110) is connected, electromagnetic control assembly comprises the water shutoff assembly that is arranged on water chamber (120) lower end mouth position, and drive the water shutoff assembly and move back and forth and make water chamber (120), water-inlet cavity (122) is being communicated with, the blocking-up two states is the execution member of conversion down, it is characterized in that, be provided with the check diaphragm unit of water route between described water-inlet cavity (122) and water chamber (120) by water-inlet cavity (122) single flow direction water chamber (120).

2. solenoid valve according to claim 1, it is characterized in that, be provided with transition water cavity (121) between described water-inlet cavity (122), water chamber (120), electromagnetic control assembly comprises the water shutoff assembly that is arranged on transition water cavity (121) lower end mouth position, reach driving water shutoff assembly and move back and forth the execution member that water-inlet cavity (122), transition water cavity (121) are changed under connection, blocking-up two states, be provided with the check diaphragm unit of water route between transition water cavity (121) upper end-hole and water chamber (120) by water-inlet cavity (122) single flow direction water chamber (120).

3. solenoid valve according to claim 1 and 2 is characterized in that, described check diaphragm unit is made of unidirectional water shutoff diaphragm (209) and connecting rod (206), and connecting rod (206) is fixedly connected on unidirectional water shutoff diaphragm (209) on the valve body (102).

4. solenoid valve according to claim 3 is characterized in that, described unidirectional water shutoff diaphragm protrudes to water-inlet cavity side or transition water cavity side.

5. solenoid valve according to claim 4 is characterized in that, described unidirectional water shutoff diaphragm (53) is spherical shape diaphragm or disc-shaped diaphragm.

6. solenoid valve according to claim 1 and 2, it is characterized in that, described check diaphragm unit comprises check water shutoff diaphragm (109), backing plate (106) and resilient member (108), the check water shutoff mouth (105) of check water shutoff diaphragm (109) and water chamber (120) lower end mouth mates and is fixed on the backing plate (106), resilient member (108) one ends act on backing plate (106), and the other end acts on the valve body (102) relative with backing plate (106).