CN215372055U

CN215372055U - Fluorine nitrogen gas stainless steel valve

Info

Publication number: CN215372055U
Application number: CN202121502768.0U
Authority: CN
Inventors: 杨波
Original assignee: Kezhe Shanghai Valve Co ltd
Current assignee: Kezhe Shanghai Valve Co ltd
Priority date: 2021-07-04
Filing date: 2021-07-04
Publication date: 2021-12-31
Anticipated expiration: 2031-07-04

Abstract

The utility model discloses a fluorine nitrogen gas stainless steel valve which comprises a valve body, a valve cap, a valve rod, a piston, a valve clack, a safety cap, a plugging core and a plugging cap, wherein the upper end of the valve body is provided with the valve cap in threaded connection, a pressing ring is arranged at the joint of the bottom of the valve cap and the valve body, a diaphragm covers the bottom of the pressing ring, the valve rod in threaded connection is arranged inside the valve cap, the top of the valve rod is fixedly connected with the valve cap, the piston is arranged below the valve rod, a steel ball is embedded and connected between the valve rod and the piston, the valve clack is arranged inside the valve body, the upper part of the valve clack is in contact connection with the bottom of the piston, the safety cap is arranged on the left side of the valve body, and the joint of the safety cap and the valve body is provided with a flat gasket and a rupture disk. The piston is arranged between the valve cap and the valve rod, and the piston is matched with the compression ring with the diaphragm at the lower end of the valve cap, so that the valve is suitable for being screwed down with large torque, the reliability of difficult internal leakage is ensured, the valve is particularly suitable for fluorine-nitrogen gas, and the leakage problem of the valve body is effectively solved by arranging the metal hard-sealing plug core on the side wall of the valve body.

Description

Fluorine nitrogen gas stainless steel valve

Technical Field

The utility model relates to the technical field of valves, in particular to a fluorine and nitrogen gas stainless steel valve.

Background

The gas cylinder valve is a valve device mainly used for gas regulation and discharge of a gas storage tank, and gas cylinders such as oxygen, nitrogen, hydrogen, argon and the like are frequently used in life.

At present, a steel cylinder valve in the market is simple in structure, the airtightness of the valve body is insufficient, gas leakage is easy to occur after long-term use, the valve body is not suitable for being screwed down with large torque, and the valve body is easy to damage. For this reason, a new technical solution needs to be designed for solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fluorine and nitrogen gas stainless steel valve, which solves the problems that in the prior art, a steel cylinder valve is simple in structure, easy to leak and easy to damage.

In order to achieve the purpose, the utility model provides the following technical scheme: a fluorine nitrogen gas stainless steel valve comprises a valve body, a valve cap, a valve rod, a piston, a valve clack, a safety cap, a plug core and a plug cap, the upper end of the valve body is provided with a valve cap in threaded connection, a pressure ring is arranged at the connection part of the bottom of the valve cap and the valve body, the bottom of the pressure ring is covered with a diaphragm, a valve rod in threaded connection is arranged inside the valve cap, the top of the valve rod is fixedly connected with the valve cap, a piston is arranged below the valve rod, a steel ball is embedded and connected between the valve rod and the piston, a valve clack is arranged inside the valve body, the upper part of the valve clack is in contact connection with the bottom of the piston, the left side of the valve body is provided with a safety cap, a flat gasket and a rupture disk are arranged at the joint of the safety helmet and the valve body, a plug core in plug-in connection is arranged on the right side of the valve body, a core plugging sealing element is arranged between the left end of the core plugging and the valve body, and the plugging cap is sleeved on the surface of the core plugging and connected with the valve body.

As an improvement of the technical scheme, a first O-shaped ring is arranged at the connection position of the valve rod and the valve cap, a second O-shaped ring is arranged at the connection position of the valve cap and the valve body, and a third O-shaped ring is arranged at the connection position of the piston and the inner wall of the valve cap.

As an improvement of the technical scheme, the upper side and the lower side of the plugging core are respectively provided with a plug pin for plug connection, the right end of the plugging core penetrates through the plugging cap, and the extending end of the plugging core is provided with a steel wire retaining ring for a shaft.

As an improvement of the technical scheme, a hand wheel is arranged at the top of the valve rod, a hand wheel cover is arranged at the top of the hand wheel, and the hand wheel cover is embedded into the hand wheel and is fixedly connected with the end part of the valve rod.

Compared with the prior art, the utility model has the following beneficial effects:

the piston is arranged between the valve cap and the valve rod, and the piston is matched with the compression ring with the diaphragm at the lower end of the valve cap, so that the valve is suitable for being screwed down with large torque, the reliability of difficult internal leakage is ensured, the valve is particularly suitable for fluorine-nitrogen gas, and the leakage problem of the valve body is effectively solved by arranging the metal hard-sealing plug core on the side wall of the valve body.

Drawings

FIG. 1 is a schematic structural diagram of a fluorine and nitrogen gas stainless steel valve.

In the figure: the valve comprises a valve body-1, a valve cap-2, a valve rod-3, a piston-4, a valve clack-5, a safety cap-6, a plug-core-7, a plug cap-8, a press ring-9, a diaphragm-10, a steel ball-11, a flat gasket-12, a rupture disc-13, an O-shaped ring-14, an O-shaped ring-two-15, an O-shaped ring-three-16, a bolt-17, a steel wire retaining ring-18 for a shaft, a hand wheel-19 and a hand wheel cover-20.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a fluorine nitrogen gas stainless steel valve, includes valve body 1, valve cap 2, valve rod 3, piston 4, valve clack 5, safety helmet 6, stifled core 7 and stifled cap 8, the upper end of valve body 1 is equipped with threaded connection's valve cap 2, valve cap 2 bottom is equipped with clamping ring 9 with the junction of valve body 1, the bottom of clamping ring 9 covers there is diaphragm 10, the inside of valve cap 2 is equipped with threaded connection's valve rod 3, the top fixedly connected with valve cap 2 of valve rod 3, the below of valve rod 3 is equipped with piston 4, the embedding is connected with steel ball 11 between valve rod 3 and the piston 4, the inside of valve body 1 is equipped with valve clack 5, the top of valve clack 5 is connected with the bottom contact of piston 4, the left side of valve body 1 is equipped with safety helmet 6, safety helmet 6 is equipped with flat gasket 12 and rupture disk 13 with the junction of valve body 1, the right side of valve body 1 is equipped with the stifled core 7 of plug-in connection, a sealing element of the plugging core 7 is arranged between the left end of the plugging core 7 and the valve body 1, and the plugging cap 8 is sleeved on the surface of the plugging core 7 and is connected with the valve body 1.

Further improved ground, valve rod 3 is equipped with O shape circle one 14 with being connected of valve cap 2, valve cap 2 is equipped with O shape circle two 15 with the junction of valve body 1, the junction of piston 4 and the 2 inner walls of valve cap is equipped with O shape circle three 16, has improved the leakproofness of being connected between valve rod 3, piston 4 and the valve cap 2 through being equipped with O shape circle one 14, O shape circle two 15, O shape circle three 16, has improved the leakproofness of being connected between valve cap 2 and the valve body 1 simultaneously.

Further improve ground, the upper and lower both sides of stifled core 7 are equipped with plug connection's bolt 17 respectively, the right-hand member of stifled core 7 runs through stifled cap 8 and stretches out the end and be equipped with axle steel wire retainer ring 18, is equipped with plug connection through the lateral wall at stifled core 7 and has bolt 17, improves the stability that the end cap is connected with valve body 1, through being equipped with axle steel wire retainer ring 18 at the right-hand member of stifled core 7, improves the stability that stifled cap 8 and stifled core 7 are connected.

Specifically, improve ground, the top of valve rod 3 is equipped with hand wheel 19, the top of hand wheel 19 is equipped with hand wheel lid 20, hand wheel lid 20 imbed in the hand wheel 19 and with the tip fixed connection of valve rod 3, through be equipped with hand wheel lid 20 at the top of hand wheel 19, conveniently with hand wheel 19 fixed connection at the top of valve rod 3, improve the convenience of hand wheel 19 installation.

The valve body-1, the valve cap-2, the valve rod-3, the piston-4, the valve clack-5, the safety cap-6, the plug core-7, the plug cap-8, the press ring-9, the diaphragm-10, the steel ball-11, the flat gasket-12, the rupture disk-13, the O-shaped ring-14, the O-shaped ring-15, the O-shaped ring-16, the bolt-17, the shaft steel wire retainer ring-18, the hand wheel-19 and the hand wheel cover-20 are all universal standard parts or parts known by technicians in the field, the structure and the principle of the parts can be known by technical manuals or conventional experimental methods, the piston 4 is arranged between the valve cap 2 and the valve rod 3, and the press ring 9 with the diaphragm 10 is matched at the lower end of the valve cap 2, so that the valve is suitable for large-torque tightening, the reliability of difficult internal leakage is ensured, the valve is particularly suitable for fluorine-nitrogen gas, and the problem of leakage of the valve body 1 is effectively solved by arranging the metal hard-sealing plug core 7 on the side wall of the valve body 1.

When the valve is used, the hand wheel 19 is screwed to drive the valve rod 3 to rotate, so that the piston 4 is driven to move up and down, the gap between the diaphragm 10 and the valve clack 5 is adjusted, the flow rate of gas is adjusted, the sealing core 7 with the sealing element of the sealing core 7 on the right side of the valve body 1 is matched, the sealing performance of the valve body 1 is improved, and the valve body 1 is effectively prevented from leaking.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fluorine nitrogen gas stainless steel valve, includes valve body (1), valve cap (2), valve rod (3), piston (4), valve clack (5), safety helmet (6), stifled core (7) and stifled cap (8), its characterized in that: the upper end of valve body (1) is equipped with threaded connection's valve cap (2), valve cap (2) bottom is equipped with clamping ring (9) with the junction of valve body (1), the bottom of clamping ring (9) covers and has diaphragm (10), the inside of valve cap (2) is equipped with threaded connection's valve rod (3), the top fixedly connected with valve cap (2) of valve rod (3), the below of valve rod (3) is equipped with piston (4), the embedding is connected with steel ball (11) between valve rod (3) and piston (4), the inside of valve body (1) is equipped with valve clack (5), the top of valve clack (5) is connected with the bottom contact of piston (4), the left side of valve body (1) is equipped with safety cap (6), safety cap (6) are equipped with flat gasket (12) and rupture disk (13) with the junction of valve body (1), the right side of valve body (1) is equipped with plug core (7) of plug-in connection, a sealing element of the plugging core (7) is arranged between the left end of the plugging core (7) and the valve body (1), and the plugging cap (8) is sleeved on the surface of the plugging core (7) and is connected with the valve body (1).

2. The fluorine nitrogen gas stainless steel valve according to claim 1, characterized in that: valve rod (3) are equipped with O shape circle (14) with being connected of valve cap (2), valve cap (2) are equipped with O shape circle two (15) with the junction of valve body (1), piston (4) are equipped with O shape circle three (16) with the junction of valve cap (2) inner wall.

3. The fluorine nitrogen gas stainless steel valve according to claim 1, characterized in that: the upper side and the lower side of the plugging core (7) are respectively provided with a plug pin (17) for plug-in connection, the right end of the plugging core (7) penetrates through the plugging cap (8) and the extending end is provided with a steel wire retaining ring (18) for the shaft.

4. The fluorine nitrogen gas stainless steel valve according to claim 1, characterized in that: the top of valve rod (3) is equipped with hand wheel (19), the top of hand wheel (19) is equipped with hand wheel lid (20), hand wheel lid (20) imbed in hand wheel (19) and with the tip fixed connection of valve rod (3).