CN200949680Y

CN200949680Y - Pulse electromagnetic valve

Info

Publication number: CN200949680Y
Application number: CN 200620107978
Authority: CN
Inventors: 陆宝宏; 徐新华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-15
Filing date: 2006-09-15
Publication date: 2007-09-19
Anticipated expiration: 2016-09-15

Abstract

The utility model relates to a pulse electromagnetic valve comprising a valve body, a rubber diaphragm, a moveable stent, a seal sleeve and a coil. The rubber diaphragm is sleeved on the moveable stent and the outer peripheral is arranged on the valve body. The seal sleeve is arranged on inner wall of the valve cavity. The utility model is mainly characterized in that a protective plate is arranged on the valve body. The coil is arranged on the upper part in the protective plate. A sheath is provided below the coil. A pair of permanent magnetic ferrites are arranged in the sheath. A guiding magnetic core is arranged at the centre of the top of the protective plate. An iron core is provided below the guiding magnetic core. A spring the lower end of which is sleeved on the upper end of the iron core is arranged in the guiding magnetic core. A rubber cup is arranged at the lower end of the iron core. The utility model has a simple and reasonable structure thus is easy to work. The electromagnetic valve only has pulse current while in the state transition. In the rest time, the electromagnetic valve is in a state of powering off and therefore can overcome the infavorable affection of the coil temperature rising and prolong the working life and the reliabilty of the electromagnetic valve and at the same time decrease the energy consumption of the electromagnetic valve.

Description

Impulse electromagnetic valve

Technical field

The utility model belongs to solenoid valve, be specifically related to a kind of in watering equipments such as water heater, washing machine, dishwasher the impulse electromagnetic valve of controlled water flow break-make.

Background technique

Equipment such as existing washing machine, water heater are used for the entering water electromagnetic valve of controlled water flow, usually the electromagnetic force that is produced by the energising electromagnetic coil is kept the unlatching of valve, must keep power supply to be in on-state in whole process, in case dead electricity, valve cuts out under the effect of spring restoring force immediately.Because electromagnetic coil continues to be in "on" position when valve is worked, coil can raise because of heating causes temperature, then makes coil burnout when temperature rise is too high easily, and this is the main cause that existing solenoid valve lost efficacy easily; Simultaneously, the energising of Chi Xuing has also increased energy consumption.

Summary of the invention

At the problems referred to above, the purpose of this utility model provides a kind of impulse electromagnetic valve that utilizes the electrical pulse control electromagnetic valve to open, close.Make solenoid valve only have an impulsive current when state switches, all the other times all are in the no electric circuit state, thereby overcome the adverse effect of coil temperature rise, improve the operating life and the reliability of solenoid valve, and have reduced the energy consumption of solenoid valve.

The purpose of this utility model realizes as follows: a kind of impulse electromagnetic valve, comprise valve body, elastomer diaphragm, travel(l)ing rest, stuffing box gland, coil, wherein elastomer diaphragm is sleeved on the travel(l)ing rest, its outer periphery is located on the valve body, stuffing box gland is located at the valve pocket inwall, be characterized in that valve body is provided with backplate, coil places the backplate internal upper part, the coil below is provided with sheath, be provided with a pair of permanent-magnet ferrite in the sheath, the backplate center of top is provided with the magnetic conduction core, and there is an iron core magnetic conduction core below, the magnetic conduction in-core is provided with the spring that the lower end is enclosed within the iron core upper end, and the iron core lower end is provided with rubber cap.

Permanent-magnet ferrite of the present utility model inboard is provided with magnetic core.

Be equipped with O shape circle on the magnetic conduction core of the present utility model.

Owing to below coil, be provided with permanent-magnet ferrite, permanent-magnet ferrite can produce the magnetic field that direction is constant, when input direct impulse signal in coil, the magnetic field that coil produces is consistent with permanent-magnet ferrite generation magnetic direction, therefore iron core can be under the magnetic force of stack, the pressure that overcomes the spring on its top upwards promotes, and solenoid valve is opened.After the pulse signal, though the magnetic force that coil produces disappears, but, iron core contacts with the magnetic conduction core because being raised the back, the magnetic conduction core strengthens greatly to the magnetic attraction of iron core, the magnetic force of permanent-magnet ferrite generation still acts on the iron core in addition, be enough to offset the elastic force that spring produces by compression, so coil need not to switch on and also can keep the opening state of solenoid valve.When needs are closed solenoid valve, reverse impulse signal of input in coil, coil produces the magnetic field opposite with the permanent-magnet ferrite magnetic direction, the suffered magnetic force of iron core can be cancelled each other, at this moment, the pressure of spring just forces iron core to move downwards, makes closed electromagnetic valve.

The utility model is simple and reasonable, be easy to realize; Just have impulsive current when state switches, all the other times all are in the no electric circuit state, therefore can overcome the adverse effect of coil temperature rise, thereby improve the operating life and the reliability of solenoid valve, and have reduced the energy consumption of solenoid valve.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1 expression valve body; 2 expression elastomer diaphragms; 3 expression travel(l)ing rests; 4 expression stuffing box glands; 5 expression rubber caps; 6 expression iron cores; 7 expression permanent-magnet ferrites; 8 expression magnetic cores; 9 expression sheaths; 10 expression coils; 11 expression backplates; 12 expression springs; 13 expression magnetic conduction cores; 14 expression nuts; 15 expression O shape circles.

Embodiment

The utility model will be further described below with reference to accompanying drawing and by embodiment.

As shown in Figure 1, impulse electromagnetic valve has the valve body 1 of an engineering plastics molding and forming, it has advancing of can linking to each other with medium pipeline, water outlet, one travel(l)ing rest 3 is arranged in the valve pocket, elastomer diaphragm 2 is sleeved on the travel(l)ing rest 3, the outer periphery of elastomer diaphragm 2 is fixed on the valve body 1, the valve pocket inwall has a stuffing box gland 4, the backplate 11 that adopts the permeability magnetic material moulding is housed on the valve body 1, coil 10 places the top in the backplate 11, there is a sheath 9 coil 10 belows, a pair of permanent-magnet ferrite 7 is arranged in the sheath 9, the inner side surface of permanent-magnet ferrite 7 is close to the magnetic core 8 by permeability magnetic material machine shaping, to improve its magnetic intensity, backplate 11 center of top are equipped with the magnetic conduction core 13 that adopts the magnetic conduction steel to process by nut 14, and there is an iron core 6 magnetic conduction core 13 belows, have a lower end to be enclosed within the spring 12 of iron core 6 upper ends in the magnetic conduction core 13, iron core 6 lower ends are with a rubber cap 5.In order to improve the sealability of valve pocket, O shape circle 15 is housed also on the magnetic conduction core 13.At the beginning, iron core 6 is in the next, and the air gap between iron core 6 and the magnetic conduction core 13 is bigger, and mutual magnetic attraction is not enough to the elastic force of antagonistic spring 12, and under spring 12 pressure effects, the rubber cap 5 that is enclosed within iron core 6 lower ends is blocked the center hole on the travel(l)ing rest 3; Inlet by solenoid valve introduces when the working medium of certain pressure, aperture through elastomer diaphragm 2 and travel(l)ing rest 3 peripheries enters valve pocket, by the pressure difference of medium inside and outside the chamber and the elastic force of spring 12, elastomer diaphragm 2 is close on the Sealing Surface of valve body 1, at this moment closed electromagnetic valve.When the direct impulse electrical signal input coil 10 of certain width, produce and equidirectional magnetic field, permanent-magnet ferrite 7 magnetic fields, iron core 6 is under the magnetic force of stack, overcome the elastic force and the inside and outside caused pressure of medium differential pressure of spring 12, upwards promote, the aperture at travel(l)ing rest 3 centers is opened, the medium that waits is there flowed out downwards, pressure reduces in the chamber, and the pressure reduction of import and inner chamber is lifted travel(l)ing rest 3 and elastomer diaphragm 2, and this moment, solenoid valve was opened.After the pulse signal, though the magnetic force that coil 10 produces disappears, but, iron core 6 contacts with magnetic conduction core 13 because being raised the back, between the two air gap reduce the magnetic attraction of 13 pairs of iron cores 6 of magnetic conduction core is improved greatly, the magnetic force of permanent-magnet ferrite 7 generations still acts on the iron core in addition, be enough to the elastic force that antagonistic spring 12 produces by compression, therefore need not coil 10 and continue the opening state that energising promptly can be kept valve.When the needs cut-off valve, introduce the reverse impulse signal of certain width for coil 10, coil 10 produces and reciprocal magnetic field, permanent-magnet ferrite 7 magnetic fields, iron core 6 suffered magnetic force are cancelled out each other basically, at this moment, the active force of spring 12 forces iron core 6 to move downwards, closes the aperture at travel(l)ing rest 3 centers, thereby has realized closing of solenoid valve.As long as adjust the magnetic property of permanent-magnet ferrite and the relevant parameter of coil, just can realize the impulse electromagnetic valve of different operating voltage.

The magnetic field mutual superposition of the direction-agile that the utility model produces by constant magnetic field of the direction that permanent-magnet ferrite produces and coil electricity, the size of the suffered magnetic force of control iron core makes that iron core is upper and lower to be moved, and reaches the purpose of controlling open and close magnetic valve.Only have impulsive current when state switches during use, all the other times all are in the no electric circuit state, therefore can overcome the adverse effect of coil temperature rise, thereby improve the operating life and the reliability of solenoid valve, and reduce the energy consumption of solenoid valve.

Claims

1. impulse electromagnetic valve, comprise valve body (1), elastomer diaphragm (2), travel(l)ing rest (3), stuffing box gland (4), coil (10), wherein elastomer diaphragm (2) is sleeved on the travel(l)ing rest (3), the outer periphery is located on the valve body (1), stuffing box gland (4) is located at the valve pocket inwall, it is characterized in that valve body (1) is provided with backplate (11), coil (10) places backplate (11) internal upper part, coil (10) below is provided with sheath (9), be provided with a pair of permanent-magnet ferrite (7) in the sheath (9), backplate (11) center of top is provided with magnetic conduction core (13), there is an iron core (6) magnetic conduction core (13) below, be provided with the spring (12) that the lower end is enclosed within iron core (6) upper end in the magnetic conduction core (13), iron core (6) lower end is provided with rubber cap (5).

2. impulse electromagnetic valve according to claim 1 is characterized in that permanent-magnet ferrite (7) inboard is provided with magnetic core (8).

3. impulse electromagnetic valve according to claim 1 and 2 is characterized in that magnetic conduction core (13) is provided with O shape circle (15).