CN214618100U

CN214618100U - Bistable noise-reducing self-suction electromagnetic valve

Info

Publication number: CN214618100U
Application number: CN202120524931.7U
Authority: CN
Inventors: 吴斌亨; 陈鹏飞
Original assignee: Shanghai Qiaoheng Industrial Co ltd
Current assignee: Shanghai Qiaoheng Industrial Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-11-05
Anticipated expiration: 2031-03-12

Abstract

The utility model provides a bistable state is fallen and is fallen from inhaling solenoid valve provides the environment of a buffering for the contact collision of opening and shutting the in-process between the new and quiet iron core of the board of the director, lets impulse release in the twinkling of an eye become slow release, provides the environment of a buffering for the collision, "hard contact" is "flexible contact" to reach the purpose of making an uproar. Because the noise reduction gasket is added in the static iron core, the flexible buffering is realized at the moment of attraction, and the noise at the moment of attraction is greatly reduced; moreover, because the mirror surface piece is added, a magnetic transmission medium is arranged after power failure, and the action of the constant magnet is kept (the function of maintaining power failure is still realized); due to the fact that the pins are added, all the components can be kept to be complete and integrated, and good realization is achieved on noise reduction of the bistable self-priming electromagnetic valve.

Description

Bistable noise-reducing self-suction electromagnetic valve

Technical Field

The utility model relates to a gas solenoid valve, a bistable is from inhaling solenoid valve of special design.

Background

It is known that a gas solenoid valve, which is one of important accessories of a household gas appliance, plays a crucial role in the function of the gas appliance, particularly in the safety realization. The bistable self-priming electromagnetic valve as a special structure function electromagnetic valve of the gas electromagnetic valve has the working realization principle that: the coil combination forms an external magnetic field after being electrified with forward voltage, the end face of the movable iron core is attracted and contacted with the end face of the static iron core under the action of the external magnetic field, the air circuit is connected, the external magnetic field is removed after power failure, the attraction state of the movable iron core and the static iron core is still kept under the action of the constant magnet at the moment, the air circuit is kept connected, the energy consumption-free and power failure work is realized, finally, reverse voltage is electrified to the coil combination, the formed external magnetic field overcomes the attraction force of the constant magnet, the recovery release is completed, the air circuit is blocked, and the work is stopped. The electromagnetic valve is characterized in that a permanent magnet structure is added compared with a common electromagnetic valve to realize the maintenance of no energy consumption and power failure, and the electromagnetic valve is superior to the continuous power-on maintenance work of a conventional electromagnetic valve.

At present, the structure of a conventional bistable self-priming electromagnetic valve is schematic, and the conventional bistable self-priming electromagnetic valve mainly comprises a movable iron core 1, a return spring 7, a constant magnetic pole 41, a coil combination 6, a static iron core 2, a shell 100 and the like. The constant magnetic pole 41 and the coil assembly 6 generate a magnetic field when being electrified, the movable iron core 1 is attracted to move to be matched with the static iron core 2 to form sealing, and the flow channel 50 is closed; once the power is cut off, the magnetic field disappears, the movable iron core 1 leaves the static iron core 2 under the action of the return spring 7, the sealing fit disappears, and the flow passage 50 is opened. The bistable electromagnetic valve used by the existing household gas appliance is realized by the rigid contact between iron and iron during suction. In the instant of attraction, the end face of the movable iron core collides with the end face of the static iron core to generate a very clear attraction sound, and the attraction sound greatly influences the use experience of users and brings flaws to the quality of high-end household appliances (see fig. 1).

SUMMERY OF THE UTILITY MODEL

The utility model provides a bistable state is fallen and is fallen from inhaling solenoid valve, it can remain current bistable state from inhaling under the condition of the structure advantage of solenoid valve, sends the problem of great actuation noise through solving sound iron core actuation collision, guarantees simultaneously that bistable state is from not influenced from the realization of solenoid valve principle function, has solved current bistable state from inhaling the big technical problem of solenoid valve actuation noise.

In order to solve the technical problem, the utility model provides a bistable state is fallen and is fallen from inhaling solenoid valve includes:

a housing;

the movable iron core is arranged in the shell, is hollow and is provided with a flow channel for ventilation;

a stationary core disposed within the housing;

a constant magnetic pole;

the coil assembly is connected with a power supply, wraps the peripheries of the movable iron core and the static iron core, and forms a magnetic field once electrified so that the movable iron core and the static iron core can generate magnetic force to move mutually;

the return spring is connected with the movable iron core and resets to drive the movable iron core to return to an initial position after the coil combination is powered off;

and a noise reduction gasket is arranged between the movable iron core and the static iron core, and a mirror surface sheet is arranged on the surface of the noise reduction gasket so that the end face of the movable iron core is in contact with the mirror surface sheet.

Furthermore, the movable iron core is provided with a protruding block, the static iron core is correspondingly provided with a concave part, a noise reduction gasket is arranged in the concave part, and a mirror surface sheet is arranged on the outer side of the noise reduction gasket.

Furthermore, the end of the movable iron core forms a conical hollow and is communicated with the flow channel, and correspondingly, the static iron core is provided with a concave part which is matched with the end of the movable iron core.

Drawings

Fig. 1 is a schematic structural diagram of a bistable self-priming solenoid valve in the prior art.

Fig. 2 is a schematic structural diagram of the opening and closing of a bistable self-priming solenoid valve in the prior art.

Fig. 3 is a schematic structural diagram of an open state of the bistable noise reduction self-priming electromagnetic valve according to the present invention.

Fig. 4 is a schematic structural diagram of the closed state of the bistable noise reduction self-priming electromagnetic valve of the present invention.

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

The utility model discloses a bistable noise reduction is from inhaling solenoid valve and present bistable state from inhaling solenoid valve of figure 1 mainly is the structure of moving iron core 1 and quiet iron core 2, describes below this the utility model discloses a bistable noise reduction is from inhaling solenoid valve, still adopts the same serial number of figure 1 with the part that prior art is the same.

Referring to fig. 1 and fig. 3, the bistable noise reduction self-priming electromagnetic valve provided by the present invention comprises a casing 100 (see fig. 1), a movable iron core 1 disposed in the casing 100, a constant magnetic pole 41 (see fig. 1), a stationary iron core 2 disposed in the casing 100, a constant magnetic pole 41 (see fig. 1), a coil assembly 6 connected to a power supply, and a return spring 7 connected to the movable iron core 1. The coil assembly 6 wraps the peripheries of the movable iron core 1 and the static iron core 2, and once the coil assembly is electrified, a magnetic field is formed, so that the movable iron core 1 and the static iron core 2 can generate magnetic force to move mutually. An air supply flow passage 50 is provided in the movable iron core 1, and the flow passage 50 communicates with the outside. Compared with the existing electromagnetic valve, the constant magnetic pole 41 can realize the maintenance of no energy consumption and power failure, and is superior to the continuous power-on maintenance work of the existing electromagnetic valve. The permanent magnetic pole 4 is a permanent magnet (generally called a magnet), and mainly has the function of providing energy for an attraction state through the magnetism of the permanent magnet when the power is not switched on, so that the power-off maintenance is realized.

The return spring 7 and the movable iron core 1 are reset to drive the movable iron core 1 to return to the initial position after the coil combination 6 is powered off.

Further, referring to fig. 3 and 4, a noise reduction washer 12 is provided between the end face 151 of the movable core 1 and the inner surface 251 of the stationary core 2, and a mirror surface plate 11 is provided on the surface of the noise reduction washer 12 so that the end face 151 of the movable core 1 is in contact with the surface of the mirror surface plate 11.

In this embodiment, the end portion 15 of the movable iron core 1 forms a tapered hollow 19 to communicate with the flow channel 50, and correspondingly, the stationary iron core 2 is provided with a recess 29 to form a certain fit with the end portion of the movable iron core 1. A projection 28 is provided in the center of the recess 29, so that the recess 29 forms an annular groove, so that the noise reduction washer 12 arranged in the recess 29 is accommodated in. The noise reduction gasket 12 is arranged inside the annular groove, and the mirror surface piece 11 is arranged outside the noise reduction gasket 12, so that the outer side surface of the mirror surface piece 11 can be in contact with the end surface 151 of the movable iron core 1. The end face of the protrusion 28 forms a step to catch the mirror plate 11 to prevent it from falling off. The mirror surface piece 11 is cylindrical and made of iron-nickel alloy materials, and mainly has the functions of adsorbing the movable iron core after the mirror surface piece is magnetized and maintaining the attraction state of the movable iron core.

When the coil assembly 6 is energized, the magnetic force generated by the coil assembly 6 makes the end of the movable iron core 1 move to the concave portion 29 of the stationary iron core 2, and then the outer side surface of the mirror surface plate 11 can contact and form with the end surface 151 of the movable iron core 1, so that the flow channel 50 is closed (see fig. 4), and the bistable noise reduction self-priming electromagnetic valve provided by the utility model is in a closed state. When coil assembly 6 outage, the magnetic force that coil assembly 6 produced disappears, and reset spring 7 drives the tip of moving iron core 1 and removes to the direction of leaving the concave part 29 of quiet iron core 2, and then, the lateral surface of mirror surface piece 11 can separate with the terminal surface 151 of moving iron core 1, and runner 50 is opened (see fig. 3), the utility model provides a bistable state falls to make an uproar and is in and opens the on-state from inhaling solenoid valve.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. Bistable noise reduction self-priming electromagnetic valve, its characterized in that includes:

a housing;

a stationary core disposed within the housing;

a constant magnetic pole;

2. A bistable noise reducing self-priming electromagnetic valve as claimed in claim 1, wherein said movable core is provided with a projection and correspondingly said stationary core is provided with a recess, a noise reducing washer is provided inside said recess and a mirror plate is provided outside said noise reducing washer.

3. The bistable noise reducing self-priming electromagnetic valve as claimed in claim 1, wherein the end of said movable iron core is formed with a conical hollow communicating with said flow channel, and said stationary iron core is correspondingly provided with a recess cooperating with the end of the movable iron core.