CN210770549U - Normally closed proportional valve - Google Patents

Abstract

The utility model discloses a normally closed proportional valve, include: the electromagnetic control assembly comprises an electromagnetic module and a valve core which is detachably arranged on the electromagnetic module, the valve core is detachably arranged at the opening, the valve core can be arranged in the valve core cavity through the opening, the end part of the valve core is provided with a plug which can block the valve core cavity, an elastic part is arranged between the valve core and the electromagnetic module or between the valve core and the valve body, the elastic part can ensure that the plug can keep the state of blocking the valve core cavity, the electromagnetic module can adsorb the valve core to open the valve core cavity when being electrified, the normally closed function and the electrified opening function of the proportional valve are realized, the valve core can be replaced by detaching the electromagnetic module, the electromagnetic control assembly can form electromagnetic control assemblies with different specifications, and the electromagnetic control assembly is suitable for air valves with different specifications, the use flexibility is high.

Description

A normally closed proportional valve

technical field

The utility model relates to the field of air valves, in particular to a normally closed proportional valve.

Background technique

The proportional valve is widely used in gas transmission equipment. It uses the principle of electromagnetic adsorption to control the position of the spool to achieve the function of flow control or pressure control. The normally closed proportional valve is closed when it is not energized, and is opened by magnetic adsorption after energization. The valve body thus forms a conduction. The conventional normally closed proportional valve is generally non-removable, that is, the model is fixed at the time of production, and the valve core assembly cannot be replaced as needed, and the use flexibility is poor.

Utility model content

The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a normally closed proportional valve with high flexibility in use.

The technical scheme adopted by the utility model to solve its technical problems is:

A normally closed proportional valve, comprising: a valve body and an electromagnetic control assembly, the valve body is provided with an air inlet passage, an air outlet passage and a valve core cavity, and the air intake passage and the air outlet passage pass through the valve core cavity The electromagnetic control assembly includes an electromagnetic module and a valve core detachably arranged on the electromagnetic module, the valve core cavity is provided with an opening, the electromagnetic module is detachably arranged at the opening, and the valve core The valve core can be loaded into the valve core cavity through the opening, the end of the valve core is provided with a plug that can block the valve core cavity, and an elastic member is arranged between the valve core and the electromagnetic module or between the valve core and the valve body, and the elastic The component can provide the plug with an elastic force away from the electromagnetic module and can keep the plug in the state of blocking the valve core cavity. When the electromagnetic module is energized, it can attract the valve core to move toward the direction close to the electromagnetic module and open the valve core cavity. Realize the normally closed function and the power-on open function of the proportional valve.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the valve core can be replaced by removing the electromagnetic module, so that it can form electromagnetic control components of different specifications, suitable for air valves of different specifications, and flexible in use. high.

Preferably, a retaining ring is provided between the valve core and the plug, one end of the elastic member is pressed against the retaining ring, and the other end of the elastic member is pressed against the end surface of the electromagnetic module, so as to generate a distance for the valve core. Elastic force of the electromagnetic module.

Preferably, the elastic member is a compression spring.

Preferably, the valve body is provided with a normally open air outlet, the normally open air outlet is connected to the intake passage or the valve core cavity and is not blocked by the plug, so that the normally open air outlet can maintain continuous gas without being affected by the proportional valve Output to supply gas for Changming small fire or auxiliary channel, which is convenient for users to judge the gas supply status. Of course, if the normally open air outlet is not required, it can be flexibly blocked by means of screws or plugs, which can be set according to actual needs, and will not be described in detail here.

Preferably, a connecting port is provided at the junction between the valve core cavity and the air outlet channel, and the plug corresponds to the connecting port and can block the connecting port, so as to achieve the function of cutting off or controlling the gas volume, and can be used as a large fire or the main channel for gas supply , the normally open air outlet is connected to the spool cavity and kept in communication with the intake passage, so as to realize the function of the proportional valve outputting different flow rates in two different states of unenergized and after being energized to meet different usage requirements.

Preferably, the plug is an elastic member to improve the sealing performance during plugging.

Preferably, there is a T-shaped hole in the plug, and the end of the valve core is provided with a T-shaped head matched with the T-shaped hole. The plug can be quickly installed through the cooperation of the T-shaped hole and the T-shaped head, and clamped retaining ring.

Preferably, a sealing ring is arranged between the electromagnetic module and the valve body to improve the sealing performance.

Preferably, the valve core is an iron core, so that it can be driven by the electromagnetic module.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described;

Fig. 1 is the structural representation of the specific embodiment of the utility model;

Fig. 2 is the top view schematic diagram of the specific embodiment of the utility model;

Fig. 3 is the cross-sectional schematic diagram of A-A in Fig. 2;

Fig. 4 is the cross-sectional schematic diagram of B-B in Fig. 2;

FIG. 5 is an exploded schematic view of a specific embodiment of the present invention.

Detailed ways

This part will describe the specific embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Understand each technical feature and overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

In the description of the present utility model, it should be understood that the orientation descriptions related to orientations, such as up, down, front, rear, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution .

As shown in Figures 1 to 5, a normally closed gas proportional valve includes: a valve body 1 and an electromagnetic control assembly. The valve body 1 is provided with an intake passage 11, an outlet passage 12 and a valve core cavity 13. The intake passage 11 is communicated with the air outlet channel 12 through the valve core cavity 13. The electromagnetic control assembly includes an electromagnetic module 21 and a detachable valve core 22 arranged on the electromagnetic module 21. The valve core cavity 13 is provided with an opening, and the electromagnetic module 21 is detachably arranged. At this opening, the valve core 22 can be inserted into the valve core cavity 13 through the opening, and the end of the valve core 22 is provided with a plug 24 that can block the valve core cavity 13, between the valve core 22 and the electromagnetic module 21 or between the valve core 22 and the valve core 22 An elastic member 25 is arranged between the valve bodies 1. The elastic member 25 can provide an elastic force for the plug 24 away from the electromagnetic module 21 and can keep the plug 24 in a state of blocking the valve core cavity 13. When the electromagnetic module 21 is energized, it can be adsorbed The valve core 22 moves to the direction close to the electromagnetic module 21 and opens the valve core cavity 13 to realize the normally closed function and the power-on opening function of the proportional valve, and the valve core 22 can be replaced by removing the electromagnetic module 21 so that it can form different specifications Electromagnetic control components, suitable for valves of different specifications, with high flexibility in use.

In actual production, the electromagnetic module 21 can be standardized for production, and by replacing different valve cores to make them suitable for valve bodies of different specifications and form air valves of different specifications, the production cost can be effectively reduced.

Preferably, as shown in FIG. 3 , FIG. 4 , and FIG. 5 , in some specific embodiments, a retaining ring 23 is provided between the valve core 22 and the plug 24 , and one end of the elastic member 25 is pressed against the retaining ring 23 , the other end of which is pressed against the end surface of the electromagnetic module 21 to generate an elastic force for the valve core 22 away from the electromagnetic module 21 .

Preferably, in some specific embodiments, the elastic member 25 is a compression spring. Of course, in the specific implementation process, the elastic member 25 can also be an elastic colloid or a tension spring, which will not be described in detail here.

Preferably, in some specific embodiments, as shown in FIG. 3 and FIG. 5 , the valve body 1 is provided with a normally open air outlet 5 , and the normally open air outlet 5 is connected to the intake passage 11 or the valve core cavity 13 and It is not blocked by the plug 24, so that the normally open gas outlet 5 can maintain continuous gas output without being affected by the proportional valve, so as to supply gas for the Changming small fire or the auxiliary channel, which is convenient for the user to judge the gas supply status.

Preferably, in some specific embodiments, as shown in FIGS. 3 and 4 , a connecting port is provided at the junction between the valve core cavity 13 and the air outlet channel 12 , and the plug 24 corresponds to the connecting port and can be blocked The connecting port can be used as a fire or main channel to supply gas to achieve the function of cutting off or controlling the gas volume. The normally open gas outlet 5 is connected to the valve core cavity 13 and kept in communication with the intake channel 11, so that the proportional valve can be connected to the valve when it is not energized. After the power is turned on, the function of outputting different flows in two different working states meets different usage requirements.

Of course, in the specific implementation process, the plug 24 can also be set to be used to block the junction of the valve core cavity 13 and the intake passage 11 with a connecting port, and the normally open air outlet 5 is provided on the intake passage 11, It can also realize the function of cutting off or controlling the gas volume, and maintaining a small fire or auxiliary channel.

Preferably, in some specific embodiments, as shown in FIG. 3 and FIG. 4 , the plug 24 is an elastic member, so as to improve the sealing performance during plugging.

Preferably, in some specific embodiments, as shown in FIG. 3 and FIG. 4 , a T-shaped hole 241 is provided in the plug 24 , and a T-shaped head matched with the T-shaped hole 241 is provided at the end of the valve core 22 . 221, through the cooperation between the T-shaped hole 241 and the T-shaped head 221, the plug 24 can be quickly installed, and the retaining ring 23 can be clamped.

Preferably, in some specific embodiments, as shown in FIG. 5 , a sealing ring 20 is provided between the electromagnetic module 21 and the valve body 1 to improve the sealing performance.

Preferably, in some specific embodiments, the valve core 22 is an iron core, so that it can be driven by the electromagnetic module 21. Of course, in the specific implementation process, the valve core 22 can also use other magnetic attraction materials such as Made of nickel.

Those skilled in the art can easily understand that, under the premise of no conflict, the above preferred modes can be freely combined and superimposed.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments, and can also be made without departing from the purpose of the present utility model within the scope of knowledge possessed by those of ordinary skill in the technical field. Various changes.

Claims (8)

1. A normally closed proportional valve, characterized in that, comprising: A valve body (1), the valve body (1) is provided with an air inlet passage (11), an air outlet passage (12) and a valve core cavity (13), the air inlet passage (11) and the air outlet passage ( 12) communicated through the valve core cavity (13); An electromagnetic control assembly, the electromagnetic control assembly comprises an electromagnetic module (21) and a valve core (22) detachably arranged on the electromagnetic module (21), an opening is provided on the valve core cavity (13), the electromagnetic The module (21) is detachably disposed at the opening, the valve core (22) can be inserted into the valve core cavity (13) through the opening, and the valve core (22) is provided at the end to block the valve core cavity ( 13), an elastic member (25) is arranged between the valve core (22) and the electromagnetic module (21) or between the valve core (22) and the valve body (1), and the elastic member (25) ) can provide the plug (24) with an elastic force away from the electromagnetic module (21) and can keep the plug (24) in a state of blocking the valve core cavity (13), and the electromagnetic module (21) can be adsorbed when energized The valve core (22) moves toward the direction close to the electromagnetic module (21) and opens the valve core cavity (13). 2. A normally closed proportional valve according to claim 1, characterized in that, A retaining ring (23) is arranged between the valve core (22) and the plug (24), and one end of the elastic member (25) is pressed against the retaining ring (23). 3. A normally closed proportional valve according to claim 1, characterized in that, The plug (24) is an elastic piece. 4. A normally closed proportional valve according to claim 3, characterized in that, A T-shaped hole (241) is arranged in the plug (24), and a T-shaped head (221) matched with the T-shaped hole (241) is arranged at the end of the valve core (22). 5. A normally closed proportional valve according to claim 1, characterized in that, A connecting port is provided at the junction between the valve core cavity (13) and the air outlet channel (12), and the plug (24) corresponds to the connecting port and can block the connecting port. 6. A normally closed proportional valve according to claim 1, characterized in that, The valve body (1) is provided with a normally open air outlet (5), and the normally open air outlet (5) communicates with the intake passage (11) or the valve core cavity (13) and is not blocked by the head (24) Blocking. 7. A normally closed proportional valve according to claim 1, characterized in that, A sealing ring (20) is arranged between the electromagnetic module (21) and the valve body (1). 8. A normally closed proportional valve according to claim 1, characterized in that, The valve core (22) is an iron core.

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