CN218644908U

CN218644908U - Electromagnetic control gas valve

Info

Publication number: CN218644908U
Application number: CN202223162374.2U
Authority: CN
Inventors: 张成祥; 张凯
Original assignee: Xi'an Yoyir Gas Equipment Co ltd
Current assignee: Xi'an Yoyir Gas Equipment Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-17
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a gas valve that can electromagnetic control, include: a gas valve body and an electromagnetic control device; the gas valve comprises a gas valve body and is characterized in that an electromagnetic control device is arranged on the side portion of the gas valve body, the electromagnetic control device drives a limiting rod to stretch into the gas valve body, and the limiting rod is in limiting connection with a valve rod pushing device in the gas valve body. The problem of among the prior art, can't satisfy when detecting abnormal signal externally, can be convenient smooth to the quick shutoff of gas valve, especially when taking place the gas leakage, can't in time close the gas valve, lead to destructive accidents such as explosion easily is solved. This gas valve that can electromagnetic control, reasonable electromagnetic control device that sets up, the signal through external input can be quick close the gas valve. Especially, when detecting gas leakage in the outside, can close the gas valve fast, avoid taking place explosive accident.

Description

Electromagnetic control gas valve

Technical Field

The utility model relates to a gas valve structural design technical field especially relates to a gas valve that can electromagnetic control.

Background

Due to high heat of the fuel gas (the combustion heat value of natural gas per cubic meter is 8000 kcal to 8500 kcal), the fuel gas is not easy to accumulate to form explosive gas, the safety is relatively higher than that of other fuel gas, and the fuel gas is widely used in a household kitchen.

In the prior art, explosion accidents caused by gas leakage still occur in a large quantity. The main reason is that when the natural gas pipeline leaks in a sealed space, the natural gas pipeline cannot be monitored in time, so that a large amount of natural gas is gathered and explodes under the influence of external open fire.

However, the gas valve in the prior art does not have a structure which can timely control the closing of the gas valve according to a signal (such as natural gas leakage) sent by the external environment.

Therefore, in the prior art, after the abnormal signal cannot be detected for the gas valve, the gas valve is automatically closed, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to an electromagnetically controllable gas valve capable of rapidly closing the gas valve by an externally inputted signal.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a solenoid-operable gas valve comprising: a gas valve body and an electromagnetic control device; the gas valve body lateral part is provided with electromagnetic control device, electromagnetic control device drive gag lever post stretches into inside the gas valve body, the gag lever post with the inside valve rod thrust unit spacing of gas valve body is connected.

In a preferred embodiment, the electromagnetic control device comprises: the electromagnetic absorption type electromagnetic electromagnet comprises a movable iron core and an electromagnet body, wherein the movable iron core is in electromagnetic driving telescopic connection with the inside of the electromagnet body, so that the electromagnet body absorbs the movable iron core electromagnetically to extend into the electromagnet body;

in a preferred embodiment, the other end of the movable iron core is connected with the limiting rod.

In a preferred embodiment, a cavity is formed at the other end of the movable iron core, the limiting rod is inserted into the cavity, and the limiting rod is in clearance fit with the cavity.

In a preferred embodiment, the limiting rod is a stepped rod, the size of one end of the limiting rod extending into the cavity is larger than that of the other end of the limiting rod, and one end of the limiting rod far away from the cavity is of a 30-degree chamfer structure.

In a preferred embodiment, the chamfer has a long right-angle side length of 2mm.

In a preferred embodiment, the length of the cavity is smaller than the length of the movable core.

In a preferred embodiment, near the end of the cavity, an outer pin hole is formed in the movable iron core in the longitudinal direction; and an inner pin hole is longitudinally formed through the limiting rod and penetrates through the outer pin hole and the inner pin hole to be connected by a pin.

In a preferred embodiment, an annular groove is formed in the outer wall of one end part of the movable iron core, which is far away from the electromagnetic body, and a conical spring support is arranged between the annular groove and the electromagnetic body;

in a preferred embodiment, the annular groove is close to one side of the electromagnet body, and the annular groove is in smooth transition with the outer wall of the movable iron core;

in a preferred embodiment, the smooth transition surface of the annular groove and the outer wall of the movable iron core is adapted to the inner diameter of the conical spring.

In a preferred embodiment, a mounting boss is convexly arranged on the side portion of the valve cover of the gas valve body, a limiting hole is formed in the mounting boss, the electromagnetic control device is fixedly connected to the mounting boss, and the limiting rod extends into the gas valve body along the limiting hole.

In a preferred embodiment, the valve stem urging means includes: the sleeve part is sleeved on the outer wall of the valve rod, a limiting notch is formed in the outer wall of the sleeve part, and the end part of the limiting rod is detachably connected inside the limiting notch.

The utility model discloses a gas valve that can electromagnetic control has following beneficial effect:

this gas valve that can electromagnetic control includes: a gas valve body and an electromagnetic control device; the gas valve body lateral part is provided with electromagnetic control device, electromagnetic control device drive gag lever post stretches into inside the gas valve body, the gag lever post with the inside valve rod thrust unit spacing of gas valve body is connected.

The problem of among the prior art, can't satisfy when detecting abnormal signal externally, can be convenient smooth to the quick shutoff of gas valve, especially when taking place the gas leakage, can't in time close the gas valve, lead to destructive accidents such as explosion easily is solved.

This gas valve that can electromagnetic control, reasonable electromagnetic control device that sets up, the signal through external input can be quick close the gas valve. Especially, when detecting that the gas leaks in the external world, can close the gas valve fast, avoid taking place explosive accident.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a solenoid-operable gas valve according to an embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional view of a solenoid-operable gas valve according to one embodiment of the present disclosure;

FIG. 3 is a partial cross-sectional view of a solenoid-operable gas valve according to one embodiment of the present disclosure;

FIG. 4 is an enlarged partial view at A of the electromagnetically controllable gas valve illustrated in FIG. 3 in accordance with one embodiment of the present disclosure;

FIG. 5 is a schematic view of a movable core and a stop lever connection structure of an electromagnetically operable gas valve according to one embodiment of the present disclosure;

fig. 6 is a sectional view of a movable core and a stopper rod coupling structure of a solenoid-operated gas valve according to an embodiment of the present disclosure shown in fig. 5.

[ description of main reference symbols ]

1. A gas valve body;

11. a valve stem pushing device; 111. a sleeve member; 112. a limiting notch;

12. a valve cover; 13. mounting a boss; 14. a valve stem;

2. an electromagnetic control device;

21. a movable iron core; 22. an electromagnetic body; 23. a cavity; 24. a pin; 25. a ring groove; 26. a conical spring;

3. a limiting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 6, the electromagnetically controllable gas valve includes: the gas valve comprises a gas valve body 1 for closing and stopping a gas pipeline and an electromagnetic control device 2 for limiting closing and stopping of the gas valve. An electromagnetic control device 2 is arranged on the side portion of the gas valve body 1, the electromagnetic control device 2 drives a limiting rod 3 to stretch into the gas valve body 1, and the limiting rod 3 is in limiting connection with a valve rod pushing device 11 inside the gas valve body 1. The gas valve is closed to ensure the use safety under the appropriate condition through an external detection signal. Especially when gas leakage occurs, the closing of the gas valve can be automatically controlled to avoid explosion accidents, and the use safety of users is ensured.

Specifically, the limiting rod 3 is in a state of extending into the gas valve body 1 in a conventional state, and the limiting valve rod pushing device 11 of the limiting rod 1 is in a compressed state;

when the electromagnetic control device 2 receives a driving signal (for example, gas leakage, electromagnetic driving of an electromagnetic control device), the magnetic suction limiting rod 3 extends out of the gas valve body 1; the valve rod pushing device 11 loses the limiting effect of the limiting rod 3, and the valve rod pushing device 11 pushes the valve rod 14 to slide downwards to close the gas valve.

Preferably, the other end of the electromagnetic control device 2 is connected with a gas leakage detection device, whether gas leaks is detected through the gas leakage detection device, a signal is transmitted to the electromagnetic control device 2, and the electromagnetic control device 2 controls the gas valve to be closed.

It is further preferred that the solenoid control means 2 is a 9-12v solenoid drive to ensure safety in use, avoiding the dangerous problem of using 220v voltage. Secondly, most batteries of 9-12v electromagnetic coils can meet the requirements without completely depending on the limitation of power supply in households.

In order to ensure that the solenoid control device 2 performs a limiting function on the valve stem pushing device 11. The electromagnetic control device 2 comprises: a movable iron core 21 which can extend and contract relative to the electromagnetic body 22 and an electromagnetic body 22 which has magnetic attraction action on the movable iron core 21. The movable iron core 21 is electromagnetically driven and can be telescopically connected inside the electromagnetic body 22, so that the electromagnetic body 22 electromagnetically adsorbs the movable iron core 21 to extend into the electromagnetic body 22;

the other end of the movable iron core 21 is connected with the limiting rod 3, and the electromagnetic body 22 is in a fixed state relative to the gas valve body 1, so that the movable iron core 21 moves relatively in the process of electromagnetically adsorbing the movable iron core 21 by the electromagnetic body 22, and the limiting rod 3 is separated from the limiting effect of the valve rod pushing device 11.

In order to connect the limiting rod 3, the driving action of the movable iron core 21 on the limiting rod 3 is ensured. The

The other end of the movable iron core 21 is provided with a cavity 23, and the limiting rod 3 is inserted into the cavity 23. In order to ensure that the limiting rod 3 has a certain swing space, the limiting rod 3 is in clearance fit with the cavity 23. Reduce the cooperation required precision between gag lever post 2 and the gas valve body 1, avoid being in gag lever post 3 by movable iron core 21 drive in-process, because precision fit friction, can't pull out, and then can't realize closing the defect of gas valve. Through clearance fit, in certain swing interval, can all realize the limiting displacement to valve rod thrust unit 11. In addition, in the process that the movable iron core 21 drives the limiting rod 3, the limiting rod 3 can be separated from the valve rod pushing device 11 under the action of small pulling force, and the gas valve can be closed smoothly.

In order to be compatible with gas valves of known construction, in particular to ensure the cooperation with a valve stem pusher 11 of a diameter not suitable for too large. The limiting rod 3 is a stepped rod, and the size of one end of the limiting rod 3 extending into the cavity 23 is larger than that of the other end of the limiting rod. The guarantee stretches into 1 one end size of gas valve body and is thinner, cooperatees with 11 structures of valve rod thrust unit, satisfies limiting displacement. The other end of the step rod is dimensioned to fit the cavity structure of the movable core 21. A large number of experiments prove that one end of the limiting rod 3, far away from the cavity 23, is of a 30-degree chamfer structure, so that the limiting effect on the valve rod pushing device 11 can be guaranteed, and the limiting rod 3 can smoothly break away from the valve rod pushing device 11 when extending out.

Since the thickness of the valve stem pusher 11 is generally small, there is little support. Secondly, the surface roughness of the limiting rod 3 ensures that the self-locking angle is larger than 30 degrees. Preferably, the length of the long right-angle side of the chamfer is 2mm, which satisfies the requirement of being smaller than the thickness of the valve rod pushing device 11, and the valve rod pushing device 11 is supported on the inclined surface.

Since the strength requirement of the entire movable core 21 is low, the weight of the entire movable core 21 is reduced. The size of the cavity is larger, and it is certainly necessary that the length of the cavity 23 is smaller than that of the movable iron core 21. Guarantee that movable iron core 21 afterbody is solid construction, guarantee that electromagnetism body 22 can be better inhale it magnetically, satisfy the going on smoothly of closing the gas valve.

In order to meet the connection between the movable iron core 21 and the limiting rod 3, an outer pin hole is longitudinally formed in the movable iron core 21 near the end part of the cavity 23; an inner pin hole is longitudinally formed through the limiting rod 3 near one end part of the limiting rod 3 extending into the cavity, and a pin 24 is arranged to connect the outer pin hole and the inner pin hole. Under the requirement of ensuring the limit rod 3 to swing at a certain angle, the connection strength of the limit rod 3 and the movable iron core 21 can be ensured.

Can stretch into gas valve body 1 under losing the driven effect of electromagnetism body 22 in order to guarantee gag lever post 3, and then satisfy in the normal use, can guarantee that gag lever post 3 stretches into inside gas valve body 1, satisfy the limiting displacement to valve rod thrust unit 11. An annular groove 25 is formed in the outer wall of one end, away from the electromagnetic body 22, of the movable iron core 21, and a conical spring 26 is arranged between the annular groove 25 and the electromagnetic body 22 for supporting; provide a invariable holding power to movable core 21 through conical spring 26, simultaneously, also guarantee at gag lever post 3 to valve rod thrust unit 11's stability, avoid under external interference effect, lead to gag lever post 3 and valve rod thrust unit 11 to break away from, take place the defect of maloperation.

Of course, to ensure a longer extension length of the conical spring 26, the ring groove 25 is located near one side of the electromagnetic body 22. In order to ensure that the conical spring 26 is more stably stretched and retracted and avoid the risk that the conical spring slips and cannot provide supporting force, the annular groove 25 is in smooth transition with the outer wall of the movable iron core 21;

the smooth transition surface of the ring groove 25 and the outer wall of the movable iron core 21 is matched with the inner diameter of the conical spring 26. Ensures that the conical spring 26 stretches and contracts along the smooth transition surface, and also meets the stable supporting force direction of the conical spring 26. Especially, trompil fit clearance is great between gag lever post 3 and the installation boss 13, through the stable support direction of conical spring 26, has guaranteed the stable flexible direction of gag lever post 3, further reduces the risk that gag lever post 3 is blocked.

The electronic control device 11 is fixed for easy mounting. The convex installation boss 13 that is equipped with of valve gap 12 lateral part of this gas valve body 1, spacing hole has been seted up to

installation boss

13, 2 fixed connection of electromagnetic control device are on installation boss 13, and gag lever post 3 stretches into inside the gas valve body 1 along spacing hole. The mounting boss 13 may be integrally formed with the valve cap 12, or may be engaged with and fixedly connected to the valve cap 12.

In order to satisfy the normal use situation of the gas valve, the valve rod pushing device 11 comprises: the sleeve part 111 sleeved on the outer wall of the valve rod is provided with a limiting notch 112, and the end part of the limiting rod 3 is detachably connected inside the limiting notch 112. Namely: when the stopper rod 3 is inserted inside the stopper groove 112, the entire gas valve is used the same as the gas valve of the related art. When the limiting rod 3 extends out, the sleeve part 111 drives the gas valve to close.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An electromagnetically controllable gas valve, comprising: a gas valve body (1) and an electromagnetic control device (2); the gas valve is characterized in that an electromagnetic control device (2) is arranged on the side portion of the gas valve body (1), the electromagnetic control device (2) drives a limiting rod (3) to stretch into the gas valve body (1), and the limiting rod (3) is in limiting connection with a valve rod pushing device (11) inside the gas valve body (1).

2. Electromagnetically controllable gas valve according to claim 1, characterized in that said electromagnetic control means (2) comprise: the electromagnetic absorption type electromagnetic switch comprises a movable iron core (21) and an electromagnetic body (22), wherein the movable iron core (21) is in electromagnetic driving telescopic connection with the inside of the electromagnetic body (22) so that the electromagnetic body (22) absorbs the movable iron core (21) electromagnetically and extends into the inside of the electromagnetic body (22);

the other end of the movable iron core (21) is connected with the limiting rod (3).

3. The electromagnetically controllable gas valve according to claim 2, wherein a cavity (23) is opened at the other end of the movable iron core (21), the limit rod (3) is inserted into the cavity (23), and the limit rod (3) is in clearance fit with the cavity (23).

4. The electromagnetically-controlled gas valve according to claim 3, wherein the limiting rod (3) is a stepped rod, one end of the limiting rod (3) extending into the cavity (23) is larger than the other end of the limiting rod, and one end of the limiting rod (3) far away from the cavity (23) is in a 30-degree chamfer structure.

5. Electromagnetically operable gas valve according to claim 4, wherein said chamfer has a long right-angle side length of 2mm.

6. Electromagnetically controllable gas valve according to any one of claims 3 to 5, characterized in that the length of said cavity (23) is smaller than the length of said movable core (21).

7. The electromagnetically controllable gas valve according to any one of claims 3 to 5, wherein an outer pin hole is longitudinally opened in said movable core (21) near the end of said cavity (23); the limiting rod (3) is close to one end part extending into the cavity, an inner pin hole is longitudinally formed in the limiting rod (3) in a penetrating mode, and a pin (24) is arranged between the outer pin hole and the inner pin hole in the penetrating mode to be connected.

8. The electromagnetically controllable gas valve according to any one of claims 3 to 5, wherein an annular groove (25) is formed in an outer wall of one end of the movable iron core (21) away from the electromagnetic body (22), and a conical spring (26) is arranged between the annular groove (25) and the electromagnetic body (22) for supporting;

the ring groove (25) is close to one side of the electromagnetic body (22), and the ring groove (25) is in smooth transition with the outer wall of the movable iron core (21);

the smooth transition surface of the ring groove (25) and the outer wall of the movable iron core (21) is adapted to the inner diameter of the conical spring (26).

9. The gas valve with the electromagnetic control function according to claim 1, wherein a mounting boss (13) is convexly arranged on the side portion of the valve cover (12) of the gas valve body (1), a limiting hole is formed in the mounting boss (13), the electromagnetic control device (2) is fixedly connected to the mounting boss (13), and the limiting rod (3) extends into the gas valve body (1) along the limiting hole.

10. Electromagnetically controllable gas valve according to claim 9, characterized in that said valve stem pushing means (11) comprise: the sleeve part (111) is sleeved on the outer wall of the valve rod, a limiting notch (112) is formed in the outer wall of the sleeve part (111), and the end part of the limiting rod (3) is detachably connected inside the limiting notch (112).