CN217653305U

CN217653305U - Flow limiting valve

Info

Publication number: CN217653305U
Application number: CN202220855066.9U
Authority: CN
Inventors: 龚科威; 龚建军
Original assignee: Zhejiang Shiya Gas Valve Co ltd
Current assignee: Zhejiang Shiya Gas Valve Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-10-25
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a restriction valve, its characterized in that: including the current-limiting valve gap, the current-limiting spring, current-limiting valve core and current-limiting base, be formed with the fixed connection portion that is used for carrying out fixed connection with it on the current-limiting valve lid, be formed with the through-hole on the current-limiting valve lid, be formed with the shutoff recess on the terminal surface of current-limiting valve gap, current-limiting valve core fixed connection is in current-limiting valve lid, the current-limiting base slides and sets up on the current-limiting valve core, the one end of current-limiting base forms the shutoff head that is used for sealing up the shutoff recess, the other end of current-limiting base is airtight end, current-limiting spring cover is located on the current-limiting valve core and is offseted with the current-limiting base. The utility model provides a flow limiting valve has flow stability, current-limiting protection function.

Description

Flow limiting valve

Technical Field

The utility model relates to a restriction valve.

Background

The flow limiting valve is a safety protection valve, is used for liquid or gas non-corrosive media, is closed immediately when the flow rate of the media in a pipeline exceeds a set value, is automatically closed when the pipeline or accessories are damaged and the flow rate is overlarge, prevents accidents from occurring or expanding, is generally arranged at an inlet of equipment, and protects the safety and the reliability of downstream equipment.

Particularly, although the gas self-closing valve in the market at present has the function of adjusting the flow by a plug, the two ends of the gas self-closing valve are inconvenient to connect, meanwhile, the gas inlet end is unprotected, foreign matters in a pipeline easily enter the product, the gas inlet end is unprotected by high pressure, and the product is easily damaged by the increased pressure.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to prior art's current situation, a current-limiting valve is provided, have flow stability, current-limiting protect function.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a flow restriction valve, its characterized in that: the flow limiting valve comprises a flow limiting valve cover, a flow limiting spring, a flow limiting valve core and a flow limiting base, wherein a fixed connecting part for fixedly connecting the flow limiting valve cover is formed on the flow limiting valve cover, a through hole is formed on the flow limiting valve cover, a plugging groove is formed on the end face of the flow limiting valve cover, the flow limiting valve core is fixedly connected in the flow limiting valve cover, the flow limiting base is arranged on the flow limiting valve core in a sliding manner, a plugging head for sealing the plugging groove is formed at one end of the flow limiting base, the other end of the flow limiting base is a closed end, and the flow limiting spring is sleeved on the flow limiting valve core and abutted against the flow limiting base.

As an improvement, an external thread is formed on the outer wall of the flow-limiting valve cover, and the fixed connecting part is an external thread.

And the other side of the flow limiting valve core, which is abutted against the disc, extends to form a sliding rod, and the flow limiting base is arranged on the sliding rod in a sliding manner.

And the outer side wall of the plugging head of the flow limiting base is conical.

And the current-limiting base is provided with a bulge, one end of the current-limiting spring is sleeved on the bulge, and the other end of the current-limiting spring is propped against the propping disc.

Compared with the prior art, the utility model has the advantages of: will the utility model discloses a restriction valve sets up in the import department that needs the device of current-limiting protection, and when the pressure of entrance point was too big, restriction valve will carry out the shutoff with inlet channel, avoids too big pressure to cause the damage to device internal part for restriction valve has flow stability, current-limiting protect function simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a flow limiting valve in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the restriction valve in this embodiment includes a restriction valve cover 1, a restriction spring 4, a restriction valve core 3, and a restriction base 2.

Wherein, be formed with on the current-limiting valve gap 1 and be used for carrying out the fixed connection's with it fixed connection's fixed connection portion, be formed with the through-hole on the current-limiting valve gap 1, be formed with shutoff recess 11 on the terminal surface of current-limiting valve gap 1, restriction valve core 3 fixed connection is in current-limiting valve gap 1, current-limiting base 2 slides and sets up on restriction valve core 3, the one end of current-limiting base 2 forms the shutoff head 21 that is used for sealing up shutoff recess 11, the other end of current-limiting base 2 is airtight end 23, current-limiting spring 4 cover is located on restriction valve core 3 and is offseted with current-limiting base 2.

Preferably, in order to facilitate the installation of the flow restriction valve, an external thread 12 is formed on the outer wall of the flow restriction valve cover 1, and the fixed connection part is the external thread 12.

Further, in order to facilitate the arrangement of the internal flow limiting spring 4 and the connection of the flow limiting valve core 3 between the flow limiting valve cover 1 and the flow limiting base 2, a support disc 31 is formed in the middle of the flow limiting valve core 3, a fixed rod 32 extends from one side of the flow limiting valve core 3, which is positioned on the support disc 31, the fixed rod 32 is fixedly connected with the flow limiting valve cover 1, a sliding rod 33 extends from the other side of the flow limiting valve core 3, which is positioned on the support disc 31, and the flow limiting base 2 is slidably arranged on the sliding rod 33. Meanwhile, a convex portion 22 is formed on the flow-limiting base 2, one end of the flow-limiting spring 4 is sleeved on the convex portion 22, and the other end of the flow-limiting spring 4 abuts against the abutting disc 31.

In addition, the outer side wall of the plugging head of the flow limiting base 2 is conical, so that the opening between the plugging head 21 of the flow limiting base 2 and the inner side wall of the plugging groove 11 of the flow limiting valve cover 1 can be conveniently adjusted, and the stable adjustment of the flow can be realized.

Furthermore, to sum up, will the utility model discloses a restriction valve sets up in the import department that needs device of current-limiting protection, because the utility model discloses a be formed with shutoff head 21 on current-limiting base 2's the terminal surface and do not consider the pore structure, the air current can't pass from the centre of current-limiting base 2, in using, the air current acts on current-limiting base 2, and pass in the shutoff recess 11 of reentrant current-limiting valve gap 1 from current-limiting base 2's periphery wall, and flow out from current-limiting valve gap 1's through-hole, when the pressure of air current is too big, the air current will promote current-limiting base 2 and slide, current-limiting spring 4 is compressed, shutoff head 21 on the current-limiting base 2 will carry out the shutoff to shutoff recess 11 on the current-limiting valve gap 1, carry out the separation to the air current-limiting valve, the restriction valve will carry out the shutoff with inlet channel, avoid too big pressure to cause the damage to device inner part, make the restriction valve have flow stability simultaneously, protect function.

Claims

1. A flow restriction valve, its characterized in that: including current-limiting valve gap (1), current-limiting spring (4), current-limiting valve core (3) and current-limiting base (2), be formed with the fixed connection who is used for carrying out fixed connection with it on current-limiting valve gap (1), be formed with the through-hole on current-limiting valve gap (1), be formed with shutoff recess (11) on the terminal surface of current-limiting valve gap (1), current-limiting valve core (3) fixed connection is in current-limiting valve gap (1), current-limiting base (2) slide to set up on current-limiting valve core (3), the one end of current-limiting base (2) forms and is used for carrying out sealed shutoff head (21) sealed shutoff recess (11), the other end of current-limiting base (2) is airtight end (23), current-limiting spring (4) cover is located on current-limiting valve core (3) and offsets with current-limiting base (2).

2. The constrictor valve of claim 1, wherein: an external thread (12) is formed on the outer wall of the flow-limiting valve cover (1), and the fixed connecting part is the external thread (12).

3. The constrictor valve of claim 1, wherein: the middle part of current-limiting valve core (3) is formed with and leans on dish (31), and it has dead lever (32) to lie in the extension of one side of leaning on dish (31) on current-limiting valve core (3), and dead lever (32) and current-limiting valve lid (1) fixed connection lie in on current-limiting valve core (3) and lean on the opposite side extension of dish (31) to have slide bar (33), and current-limiting base (2) slide and set up on slide bar (33).

4. The constrictor valve of claim 1, wherein: the outer side wall of the plugging head (21) of the flow limiting base (2) is conical.

5. The constrictor valve of claim 3, wherein: a protruding portion (22) is formed on the flow limiting base (2), one end of the flow limiting spring (4) is sleeved on the protruding portion (22), and the other end of the flow limiting spring (4) abuts against the abutting disc (31).