CN217273528U

CN217273528U - Gas cylinder is with preventing filling dress valve

Info

Publication number: CN217273528U
Application number: CN202221209169.4U
Authority: CN
Inventors: 周远航; 徐俊伟; 朱真日
Original assignee: Wuyi Xilinde Machinery Manufacture Co ltd
Current assignee: Wuyi Xilinde Machinery Manufacture Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-23
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses a filling-proof valve for a gas cylinder, which comprises a valve shell (1), wherein a through cavity (2) is arranged in the valve shell (1); a valve core (4) is arranged in the through cavity (2), and the bottom end part of the valve core (4) is connected with an anti-charging sliding piece (3); the outer side surface of the valve shell (1) is provided with a plurality of inflation ports (5) communicated with the through cavity (2), and the inflation ports (5) are matched with the anti-inflation sliding piece (3). The utility model discloses not only can improve the security of using, still have simple structure, long service life, the good and high advantage of stability in use of leakproofness.

Description

Filling-preventing valve for gas cylinder

Technical Field

The utility model relates to a valve, especially a gas cylinder is with preventing filling dress valve.

Background

The valve is an important safety component for outputting or cutting off gas in the gas cylinder; at present, valves used in gas cylinders in the market can be repeatedly filled due to structural reasons, and safety accidents occur when improper operation occurs in the subsequent filling process; therefore, in order to prevent secondary filling, a plurality of gas cylinders are provided with filling-preventing structures such as electromagnetism or passwords in the valve, and the whole structure is complex. Therefore, how to design a gas cylinder valve with high use safety and simple structure becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas cylinder is with preventing filling dress valve. The utility model discloses not only can improve the security of using, still have simple structure's advantage.

The technical scheme of the utility model: an anti-filling valve for a gas cylinder comprises a valve shell, wherein a through cavity is arranged in the valve shell; a valve core is arranged in the through cavity, and the bottom end part of the valve core is connected with an anti-charging sliding piece; a plurality of inflation ports communicated with the through cavity are formed in the outer side surface of the valve shell, and the inflation ports are matched with the anti-inflation sliding piece; the anti-charging slider is matched with the charging port, so that after the first charging is completed, the valve core is used for pushing the anti-charging slider to move to the position of the charging port to plug the charging port, the phenomenon of secondary charging is prevented, and the use safety is improved.

In the anti-filling valve for the gas cylinder, the bottom end of the through cavity is provided with the ball body, and the ball body is arranged right below the anti-filling slide piece; the setting of spheroid can reach and keep leading to the leakproofness between the intracavity portion and the gas cylinder, has avoided gaseous unnecessary outflow.

In the anti-filling valve for the gas cylinder, a groove is formed at a position, corresponding to the lower part of the ball body, of the bottom end part of the through cavity, and the diameter of a notch of the groove is equal to that of the ball body; the setting of recess can avoid the spheroid to fall into the gas cylinder from leading to the intracavity, has improved the stability of using.

In the anti-filling valve for the gas cylinder, a ventilation channel is arranged in the middle of the anti-filling slide piece.

In the anti-filling valve for the gas cylinder, the valve core comprises a valve needle, and a guide sleeve is sleeved on the valve needle; the whole guide sleeve is in a round table shape, and the diameter of the top end part of the guide sleeve is larger than that of the bottom end part of the guide sleeve; the position of the valve needle can be fixed by the guide sleeve, so that the phenomenon of dislocation of the valve needle is avoided, and the stability of the structure is improved.

In the anti-filling valve for the gas cylinder, the through cavity comprises a tightening section and a through section, and the tightening section is positioned above the through section; the valve core is arranged in the tightening section; the anti-charging slide is arranged in the through section.

In the anti-filling valve for the gas cylinder, an inner thread section is arranged on the inner side wall of the upper part of the tightening section; the guide sleeve is provided with an external thread section which is matched with the internal thread section; the internal thread section and the external thread section are matched with each other, so that the guide sleeve and the valve shell are connected more stably, and the structural stability is further improved.

In the anti-filling valve for the gas cylinder, the guide sleeve is sleeved with the sealing ring; the sealing performance in the through cavity is guaranteed due to the arrangement of the sealing ring.

In the anti-filling valve for the gas cylinder, the top end part of the valve inside is sleeved with the O-shaped ring, the top surface of the O-shaped ring is provided with the fixing piece, and the middle part of the fixing piece is provided with the flow channel; a limiting groove is formed in the position, corresponding to the O-shaped ring, of the top end of the through cavity; the mutual cooperation of O-shaped ring and mounting can fix the top portion of needle to the stability of needle position has further been guaranteed.

Compared with the prior art, the utility model discloses improved current valve for the gas cylinder, through be provided with the valve inside on leading to the chamber, prevent inflating saddle and inflation inlet, the valve inside is pressed down after gaseous toward going into in the gas cylinder to the rethread inflation inlet, make the valve inside promote to prevent inflating saddle and down remove certain distance, thereby make and prevent inflating saddle and stop up the inflation inlet, and then avoided follow-up once more to carry out the secondary through the inflation inlet and fill dress work in the gas cylinder, thereby avoided because the violation of regulations operation or fill the phenomenon that the dress gas mixing caused the incident and take place, the security of use has not only been improved, and overall structure is simple. In addition, the utility model also has the advantages that the ball body is arranged at the bottom end part of the through cavity, and the through cavity can be kept sealed when the internal gas is not used by utilizing the ball body, thereby avoiding the unnecessary leakage of the internal gas and improving the utilization rate of the gas; the groove is formed in the bottom end of the through cavity, and the ball body can be prevented from directly falling into the gas cylinder from the through cavity by the groove with the diameter of the notch smaller than that of the ball body, so that the use stability is further improved; the ventilation channel is arranged in the middle of the anti-charging sliding piece, so that the ventilation channel can ensure that the gas in the anti-charging sliding piece can enter the valve core through the anti-charging sliding piece and is output; by arranging the guide sleeve, the position of the valve needle can be kept to be vertical by utilizing the guide sleeve, so that the phenomenon of dislocation of the valve needle is avoided, and the use stability is further improved; the through cavity is formed by the tightening section and the through section which are in the shape of the circular truncated cone, the movement of the valve core can be limited by the tightening section, and the internal thread section which is matched with the guide sleeve is arranged on the tightening section, so that the valve core can be more stably stopped in the tightening section, and the use stability is further improved; the sealing ring is sleeved on the guide sleeve, so that the protective sleeve can be attached to the inner wall of the through cavity by using the sealing ring, and the sealing performance of the internal structure can be ensured; by arranging the O-shaped ring, the O-shaped ring can be used for protecting the top end part of the valve core, so that the service life is prolonged; and the setting of mounting can be fixed the position of O shape circle on the O shape circle top surface to overall structure's stability has further been improved, O shape circle also can further improve overall structure's leakproofness moreover. Therefore, the utility model discloses not only can improve the security of using, still have simple structure, long service life, the leakproofness well and the high advantage of stability in use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

The labels in the figures are: 1-valve shell, 2-through cavity, 3-anti-inflating slide piece, 4-valve core, 5-inflating port, 6-ball, 8-groove, 9-ventilating channel, 10-valve needle, 11-guide sleeve, 13-sealing ring, 14-O-shaped ring, 15-limiting groove and 16-fixing piece.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. An anti-filling valve for a gas cylinder is shown in figures 1 and 2 and comprises a valve shell 1, wherein a through cavity 2 is arranged in the valve shell 1; a valve core 4 is arranged in the through cavity 2, and the bottom end part of the valve core 4 is connected with an anti-charging slide piece 3; the outer side surface of the valve shell 1 is provided with a plurality of inflation ports 5 communicated with the through cavity 2, and the inflation ports 5 are matched with the anti-inflation sliding piece 3.

The bottom end part of the through cavity 2 is provided with a ball body 6, and the ball body 6 is arranged right below the anti-charging slide piece 3; a groove 8 is formed in the position, corresponding to the lower part of the sphere 6, of the bottom end part of the through cavity 2, and the diameter of a notch of the groove 8 is equal to that of the sphere 6; the middle part of the anti-charging sliding piece 3 is provided with a ventilation channel 9; the valve core 4 comprises a valve needle 10, and a guide sleeve 11 is sleeved on the valve needle 10; the whole guide sleeve 11 is in a circular truncated cone shape, and the diameter of the top end part of the guide sleeve 11 is larger than that of the bottom end part of the guide sleeve 11; the through cavity 2 comprises a tightening section and a through section, and the tightening section is positioned above the through section; the valve core 4 is arranged in the tightening section; the anti-charging slide 3 is arranged in the through section; an internal thread section is arranged on the top end part of the inner side wall of the tightening section; the guide sleeve 11 is provided with an external thread section which is matched with the internal thread section; a sealing ring 13 is sleeved on the guide sleeve 11; the top end part of the valve core 4 is sleeved with an O-shaped ring 14, the top surface of the O-shaped ring 14 is provided with a fixing piece 16, and the middle part of the fixing piece 16 is provided with a flow channel; a limiting groove 15 is arranged at the position of the top end part of the through cavity 2 corresponding to the O-shaped ring 14.

The working principle is as follows: when the anti-charging device is used specifically, the anti-charging slide piece 3 and the valve core 4 are sequentially installed in the through cavity 2, and the anti-charging slide piece 3 is positioned above the charging opening 5; then, the valve needle 10 is pressed downwards for a certain distance, so that the valve core 4 is communicated up and down, and the valve core 4 can be matched with the ventilation channel 9 to be communicated with the inflation port 5, and the inflation work of the gas cylinder is completed; after the inflation is finished, the valve needle 10 is continuously pressed downwards for a certain distance, the valve needle 10 continuously pushes the guide sleeve 11 to move downwards for a certain distance in the process of continuously pressing downwards, and the bottom end part of the guide sleeve 11 is contacted with the top surface of the anti-inflation slide piece 3 so as to push the anti-inflation slide piece 3 to move downwards, and finally the anti-inflation slide piece 3 stays between the two inflation ports 5, so that the purpose of blocking the inflation ports 5 is achieved, the phenomenon of subsequent secondary inflation is avoided, and the use safety is improved; after the anti-charging slide piece 3 blocks the charging port 5, the valve needle 10 is released, the valve needle 10 is pushed to move upwards by the restoring force of a spring arranged in the guide sleeve 11, and the valve needle returns to the initial position, so that the upper end part and the lower end part of the valve core 4 are disconnected; meanwhile, the valve needle 10 can synchronously drive the guide sleeve 11 to move downwards in the moving process, and at the moment, the through cavity 2 comprises a tightening section and a through section, so that in the moving process of the guide sleeve 11, the movement of the guide sleeve 11 can be limited due to the limiting effect of the tightening section, and the guide sleeve is prevented from completely entering the through section; when gas needs to be discharged to the outside, as long as the valve needle 10 is pressed downwards, the valve core 4 is integrally communicated up and down when the valve needle 10 is pressed downwards, so that a gas pressure difference is formed between the upper side and the lower side of the ball body 6, the ball body 6 is lifted upwards for a certain distance, and therefore the gas in the gas cylinder can enter the through cavity 2 through the bottom end part of the through cavity 2 and is finally output through the guide sleeve 11 and the valve needle 10; and because the spring is arranged in the guide sleeve 11, when the downward pressure on the valve needle 10 disappears, the spring can push the valve needle 10 to move upward for a certain distance under the action of the restoring force, so that the valve core 4 is not communicated up and down integrally, and air can not be continuously fed outwards.

Claims

1. The utility model provides a gas cylinder is with preventing filling dress valve which characterized in that: comprises a valve shell (1), wherein a through cavity (2) is arranged in the valve shell (1); a valve core (4) is arranged in the through cavity (2), and the bottom end part of the valve core (4) is connected with an anti-charging sliding piece (3); the outer side surface of the valve shell (1) is provided with a plurality of inflation ports (5) communicated with the through cavity (2), and the inflation ports (5) are matched with the anti-inflation sliding piece (3).

2. A gas cylinder anti-charge valve according to claim 1, characterized in that: the bottom end of the through cavity (2) is provided with a ball body (6), and the ball body (6) is arranged right below the anti-charging sliding piece (3).

3. An anti-charge valve for a gas cylinder according to claim 2, characterized in that: the bottom of logical chamber (2) portion corresponds position department below spheroid (6) and is equipped with recess (8), and the notch diameter of recess (8) equals the diameter of spheroid (6).

4. An anti-charging valve for a gas cylinder according to claim 1, characterized in that: and the middle part of the anti-charging sliding piece (3) is provided with a ventilation channel (9).

5. A gas cylinder anti-charge valve according to claim 1, characterized in that: the valve core (4) comprises a valve needle (10), and a guide sleeve (11) is sleeved on the valve needle (10); the whole guide sleeve (11) is in a circular truncated cone shape, and the diameter of the top end part of the guide sleeve (11) is larger than that of the bottom end part of the guide sleeve (11).

6. An anti-charge valve for a gas cylinder according to claim 5, characterized in that: the through cavity (2) comprises a tightening section and a through section, and the tightening section is positioned above the through section; the valve core (4) is arranged in the tightening section; the anti-charging slide (3) is arranged in the through section.

7. An anti-charge valve for a gas cylinder according to claim 6, characterized in that: an internal thread section is arranged on the top end part of the inner side wall of the tightening section; and an external thread section matched with the internal thread section is arranged on the guide sleeve (11).

8. An anti-charge valve for a gas cylinder according to claim 5, characterized in that: and the guide sleeve (11) is sleeved with a sealing ring (13).

9. An anti-charge valve for a gas cylinder according to any one of claims 1 to 8, characterized in that: the top end part of the valve core (4) is sleeved with an O-shaped ring (14), the top surface of the O-shaped ring (14) is provided with a fixing piece (16), and the middle part of the fixing piece (16) is provided with a flow channel; a limiting groove (15) is arranged at the position, corresponding to the O-shaped ring (14), of the top end part of the through cavity (2).