CN219282549U

CN219282549U - Switching valve

Info

Publication number: CN219282549U
Application number: CN202320034894.0U
Authority: CN
Inventors: 祝敏; 汪磊敏; 王君; 倪春来
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-30
Anticipated expiration: 2033-01-06

Abstract

According to the switching valve for reducing noise, due to the characteristic that the wave crests and the wave troughs exist in alternating current, after the movable iron cores are attracted, the alternating wave crests and the wave troughs can cause the unstable attraction of the movable iron cores, the movable iron cores vibrate slightly, and vibration sounds are generated. The valve body comprises a sealing mute unit, the sealing mute unit is formed by a magnetic ring arranged on the outer side of a static iron core, a rubber core is fixed at the front end of a movable iron core, a reversing unit, an electromagnetic adsorption unit, the sealing mute unit and a water exchange unit are wrapped in the valve body, when the switching valve starts to switch, the reversing unit generates shaking noise under the influence of alternating current, the magnetic ring in the electromagnetic adsorption unit starts to work, the switching valve is tightly attracted, and the noise is avoided; when the reversing unit is in a power-off state, the reversing unit returns to the original state under the spring force and self gravity factors, and the sealing mute unit is added to make up for the voltage deficiency at the trough of the alternating current so that the movable iron core can be stably attracted and the stable work of the switching valve is ensured.

Description

Switching valve

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to a switching valve.

Background

The switching valve is used as one of the electromagnetic valves, and the principle is that the electromagnetic coils generate magnetic force, so that the attraction moving iron core is lifted up to be attracted with the static iron core, and the electromagnetic valve is opened. When the alternating current power supply is used for driving the coil, due to the characteristic that the alternating current has wave crests and wave troughs, after the movable iron core is attracted, the alternating wave crests and wave troughs can cause the unstable attraction of the movable iron core, the movable iron core slightly vibrates, and a 'frizzle' vibration sound is emitted. It is therefore highly desirable to develop a switching valve that reduces noise.

In order to solve the above problem, the patent publication No. CN201320202742.3 discloses that by adding a rectifier bridge, the rectified current still has peaks and troughs, and the vibration sound of the iron core cannot be completely avoided.

Disclosure of Invention

The utility model mainly solves the problems in the prior art, provides the switching valve for reducing noise, and can provide better user experience.

The technical scheme adopted for solving the technical problems is as follows: the valve body comprises a sealing mute unit, the sealing mute unit is formed by a magnetic ring arranged on the outer side of a static iron core, a rubber core is fixed at the front end of a movable iron core, a reversing unit, an electromagnetic adsorption unit, the sealing mute unit and a water exchange unit are wrapped in the valve body, when the switching valve starts to switch, the reversing unit generates shaking noise under the influence of alternating current, the magnetic ring in the electromagnetic adsorption unit starts to work, the iron core is tightly attracted, and the noise is avoided; when the reversing unit is in a power-off state, the reversing unit is restored under the spring force and self gravity factors.

As a preferable scheme of the scheme, the magnetic ring is fixed with the static iron core through magnetism, and the magnetic ring is arranged between the static iron core and the gap of the valve body, so that additional special design is not needed, and the manufacturing cost of the switching valve is reduced.

As a preferable scheme of the scheme, the electromagnetic adsorption unit is coated on the outer side of the static iron core through the electromagnetic coil assembly, and magnetic force is generated after the electromagnetic coil assembly is electrified, so that the movable iron core moves upwards and finally is attracted with the static iron core.

As a preferable scheme of the scheme, the reversing unit is connected with the static iron core through the movable iron core, and a spring is arranged between the movable iron core and the static iron core, when the electromagnetic coil assembly is powered off and loses magnetic force, the movable iron core in the reversing unit can be rapidly separated from the static iron core by the spring, and noise after power failure is avoided.

As a preferable scheme of the scheme, the lower end of the static iron core is in pressure connection with the step of the valve body shell, and the static iron core is fixed on the valve body shell, so that the static iron core is ensured to be relatively static, and the switching power of the reversing unit is improved.

As a preferable scheme of the scheme, the water exchange unit comprises a first water outlet, a second water outlet and a water inlet, and the plurality of water outlets ensure that the switching valve can realize a stable switching function.

As a preferable scheme of the scheme, the magnetizing quantity of the magnetic ring is closely related to the structural changes of the spring, the movable iron core and the static iron core, and when the magnetizing quantity meets the attraction, a certain attraction force is provided to compensate the vibration generated by the unstable alternating current; when the power is off, the suction force of the magnetic ring is smaller than the force generated by the spring, so that the movable iron core can return, namely, the other water outlet is blocked.

The utility model has the advantages that when the switching valve starts to switch, the reversing unit generates shaking noise under the influence of alternating current, the magnetic ring in the electromagnetic adsorption unit starts to work, the movable iron core is tightly attracted, and the noise is avoided; when the reversing unit is in a power-off state, the reversing unit is restored under the action of spring force. The magnetic ring is arranged between the gap between the static iron core and the valve body, no extra special design is needed, the manufacturing cost of the switching valve is reduced, the magnetic force generated after the electromagnetic coil assembly is electrified enables the movable iron core to suck upwards, after the electromagnetic coil assembly loses the magnetic force after the power is off, the spring can quickly separate the movable iron core in the reversing unit from the static iron core, noise after the power is off is avoided, and the magnetic ring is added at the upper end of the static iron core of the switching valve, so that when the reversing valve is driven by alternating current, the voltage shortage at the trough of the alternating current is overcome, the iron core can be firmly sucked, and iron core vibration noise generated by alternation of the peaks and the troughs is avoided; the noise generated by the electromagnetic switching valve during working is reduced, the service life of the switching valve is prolonged, and the working performance of the switching valve is ensured.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic cross-sectional view of a switching valve of the present utility model;

FIG. 2 is a side view of the switching valve of the present utility model;

FIG. 3 is another side view of the switching valve of the present utility model;

in the figure: 1. an electromagnetic coil assembly; 3. a spring; 4. a movable iron core; 5. a rubber core; 6. a magnetic ring; 7. a stationary core; A. a water inlet; B. a first water outlet; C. and a second water outlet.

Detailed Description

The technical scheme of the utility model is further described below through examples and with reference to the accompanying drawings.

Examples:

the present embodiment is a switching valve for reducing noise, as shown in fig. 1 to 3, the switching valve is one of solenoid valves, and the principle of the switching valve is that the solenoid valve is basically opened by generating magnetic force through a solenoid coil, so that a movable iron core is lifted up to be attracted with a static iron core. When the alternating current power supply is used for driving the coil, due to the characteristic that the alternating current has wave crests and wave troughs, after the movable iron core is attracted, the alternating wave crests and wave troughs can cause the unstable attraction of the movable iron core, the movable iron core slightly vibrates, and a 'frizzle' vibration sound is emitted. Even if a rectifier bridge is added, the rectified current still has wave peaks and wave troughs, and vibration sound of the iron core cannot be completely avoided. It is therefore highly desirable to develop a switching valve that reduces noise.

As shown in fig. 3, the valve body is provided with a sealing and silencing unit, the sealing and silencing unit is formed by a magnetic ring 6 arranged outside the static iron core, the rubber core 5 is fixed at the front end of the movable iron core 2, the reversing unit, the electromagnetic adsorption unit, the sealing and silencing unit and the water exchange unit are wrapped in the valve body, after the electromagnetic adsorption unit is electrified, the electromagnetic adsorption unit drives the reversing unit to start to switch the water outlet, and the sealing and silencing unit compensates for the voltage shortage at the trough of the alternating current, so that the movable iron core can be attracted stably, and vibration sound of the iron core is avoided.

Further, the magnetic ring 6 and the static iron core 7 are fixed through magnetism, and the magnetic ring 6 is fixed between the gap between the static iron core and the valve body.

Further, the electromagnetic adsorption unit is coated on the outer side of the static iron core 7 through the electromagnetic coil assembly 1, and magnetic force is generated after the electromagnetic coil assembly 1 is electrified, so that the movable iron core 4 moves upwards and finally is attracted with the static iron core 7.

Further, the reversing unit is connected with the static iron core 7 through the movable iron core 4, the spring 3 is arranged between the movable iron core and the static iron core, and when the electromagnetic coil is powered off, the magnetic ring is still magnetic, but the magnetism of the magnetic ring is smaller than the reaction force of the spring, and the reversing unit falls down under the action of the spring and the dead weight.

Further, the lower end of the static iron core 7 is in pressure connection with the step of the valve body shell, so that the static iron core 7 is kept relatively static relative to the valve body, and the movement gauge of the movable iron core 4 is more controllable.

Further, the water exchanging unit comprises a first water outlet B, a second water outlet C and a water inlet A, the front part of the movable iron core 2 is in a small-diameter shape, the front end of the movable iron core 2 is provided with a rubber core 5, the movable iron core 2 moves up and down, the rubber core moves between an inlet B corresponding to the first water outlet B and an inlet C corresponding to the second water outlet C, switching between opening and closing is realized between the two inlets, and water input by the water inlet A is switched and output between the first water outlet B and the second water outlet C.

Further, the magnetizing quantity of the magnetic ring 6 is closely related to the structural changes of the spring 3, the movable iron core 4 and the static iron 7, and the magnetizing quantity can provide a certain attractive force when the movable iron core 4 and the static iron core 7 are attracted, so that the vibration generated by unstable alternating current is compensated; when the power is off, the force generated by the spring enables the movable iron core to return, namely, the other water outlet is blocked.

The magnetic ring 6 is additionally arranged on the switching valve; the voltage shortage at the trough of the alternating current can be made up, so that the movable iron core can be firmly attracted, and the vibration sound of the iron core is avoided; when the electromagnetic coil is powered off, although the magnetic ring is still magnetic, the magnetism of the magnetic ring is smaller than the reaction force of the spring, so that the movable iron core falls under the action of the spring and the dead weight, the second water outlet C is opened, and the first water outlet B is closed. In fig. 1, the front part of the movable iron core 2 is in a thin diameter shape, the front end of the movable iron core 2 is provided with a rubber core 5, the movable iron core 2 moves up and down, so that the rubber core moves between an inlet B corresponding to the first water outlet B and an inlet C corresponding to the second water outlet C, the switching between opening and closing is realized between the two inlets, and water input by the water inlet A is switched and output between the first water outlet B and the second water outlet C.

The addition of the electromagnetic ring improves the working stability of the switching valve and obviously reduces the working noise of the switching valve.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims

1. The switching valve is characterized in that the valve body comprises an electromagnetic adsorption unit, a sealing and silencing unit is arranged on the valve body, the sealing and silencing unit is formed by a magnetic ring (6) arranged on the outer side of a static iron core, a rubber core (5) is fixed at the front end of a movable iron core (2), and a reversing unit, the electromagnetic adsorption unit, the sealing and silencing unit and a water exchange unit are wrapped in the valve body.

2. A switching valve according to claim 1, characterized in that the magnetic ring (6) is magnetically fixed to the stationary core (7).

3. A switching valve according to claim 1, wherein the electromagnetic adsorption unit is coated on the outer side of the stationary core (7) through the electromagnetic coil assembly (1).

4. A switching valve according to claim 1, characterized in that the reversing unit is connected to the stationary core (7) via a movable core (4) and a spring (3) is arranged between them.

5. A switching valve according to claim 4, wherein the lower end of the stationary core (7) is in pressure contact with the valve body housing step.

6. A switching valve according to claim 1, wherein the water exchange unit comprises a first water outlet (B), a second water outlet (C), and a water inlet (a).

7. A switching valve according to claim 2, characterized in that the amount of magnetization of the magnetic ring (6) is closely related to the structural changes of the spring (3), the moving core (4), the stationary core (7).