RU2646967C1 - Method and valve mechanism of short-time high pressure gas supply - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: mechanism comprises a housing, a valve, a stem, wherein the stem is a locking element of the flow section which is intended to move the gas after impact on the outer end of the stem, and a bypass opening. The housing is made in the form of a storage cylinder with an opening for supplying compressed gas from an external gas source. On one side of the housing there is a bush provided with a sealing ring, in which a valve is mounted to form a cavity between the valve and the bush in the closed position of the valve. The bypass opening is located on the other side of the housing. The inner end of the stem and the spring are installed in the valve opening. The flow section is made between the outer end of the stem and the bush with the possibility of gas discharge into the atmosphere, and there are gaps between the valve and the bush wall and between the valve and the inner end of the stem.

EFFECT: valve actuation at small impact energy on the rod, if it is possible to use a valve mechanism to deliver control action to the actuators of pneumatic weapons and weapons simulators, as well as to other various pneumatic mechanisms.

4 cl, 3 dwg

Description

The group of inventions relates to valve mechanisms of actuators working with short-term supply of high-pressure gas, mainly for pneumatic weapons and weapon simulators.

Known valve mechanism used in various samples of pneumatic weapons according to patent RU 2169331 C1, IPC F41B 11/32, publ. 06/20/2001, which contains a housing, a valve with a stem and a spring, a seat consisting of a seat housing, bushings and seals. After assembly of the saddle body with a seal and a sleeve, the end flares at the latter. The seat body, sleeve and seal are a rigidly assembled element. In the process, the valve mechanism of the pneumatic weapon opens briefly, cutting off a portion of gas for firing a shot by hitting the valve stem.

The disadvantage of this valve mechanism is that to produce a shot it is necessary to overcome the force of the gas pressure on the valve in the gas cylinder by hitting the rod. Since the energy of the shot is directly proportional to the energy expended to initiate the shot, a lot of effort is needed to hit the rod.

A known method of short-term high-pressure gas supply, implemented in the valve mechanism according to patent RU 2532011 C1, IPC F41B 11/72, publ. 10/27/2014, which is adopted as a prototype for the method and valve mechanism, respectively.

The method of short-term high-pressure gas supply, implemented in the valve mechanism according to the patent RU 2532011, 2014, consists in connecting a gas cylinder with compressed gas to a valve mechanism body provided with a drain hole and a bypass hole interconnected, and close the drain hole the valve, and the bore between the stem and the inner surface of the valve is closed by the rod, due to gas pressure and the pressure of the spring associated with the rod and located in the inner cavity of the valve, they strike a rod to relieve gas pressure from the valve’s internal cavity through the passageway into the bypass hole, which causes the valve to open the drain hole by replacing the gas pressure force acting on the valve closure with the gas pressure force to open it, briefly release gas through the open drain hole and the bypass hole, return the valve and the stem to its original position to close the bypass valve with the valve, and the bore - rod, due to the pressure of the gas coming from the inner strips and the valve and spring pressure.

The valve mechanism comprises a housing with a valve located therein, a stem, a spring, a plug, a screw, a seal ring. The seal ring is located between the body and the gas bottle, and the spring is between the valve and the plug. The stem and valve are made separately from each other. The rod is a locking element of the passage section between the valve and the rod, which is designed to move gas from the internal cavity between the valve and the plug after the hammer is hit on the rod. After hitting the stem, the pressure in the internal cavity is less than the pressure in the gas cylinder.

The method and valve mechanism according to the patent RU 2532011, 2014 provide a reduction in shock energy along the rod. Their common drawback is the ability of the valve mechanism to work only when the housing is directly connected to a gas cylinder with compressed gas, which narrows the scope of the valve mechanism.

The problem to which the claimed group of inventions is directed is to develop a method for short-term supply of high-pressure gas and a valve mechanism with low shock energy to the rod and the possibility of using the valve mechanism both for air guns, weapon simulators, and for various types of pneumatic devices.

The problem with the specified technical result is solved by the fact that in the method of short-term high-pressure gas supply, which consists in creating a high gas pressure in the internal cavity of the housing equipped with a bypass hole and a passage section, and close the bypass valve with a valve and the passage section with a rod, strike the outer end of the stem to relieve gas pressure through the orifice, which leads to the replacement of the gas pressure force acting on the valve closing by the gas pressure force on its opening, in they let gas through the bypass hole, return the valve and the stem to their original position, closing the bypass valve with the valve, and the stem - the bore, according to the invention, the housing is made in the form of a storage cylinder, which is sealed with a sleeve provided with a sealing ring, into which the valve is installed to form in the closed position the valve cavity between the valve and the sleeve, the inner end of the stem and the spring are installed in the valve hole, the bypass hole and the bore are performed separately from a friend, high-pressure gas is fed into the internal cavity of the housing through the compressed gas supply hole from an external gas source, gas is discharged when it hits the stem from the cavity between the valve and the sleeve, and the holes in the valve through the passage section made in the form of a gap between the outer end of the rod and the sleeve, with the possibility of gas escape into the atmosphere, when the valve returns to its original position, the gas is filled with gas between the valve and the sleeve through the gap between the valve and the wall of the sleeve, and the holes are filled with gas valve - through the clearance between the inner end and the valve rod.

In addition, the sleeve is fixed in the housing using a threaded sleeve, which has a gap between the outer end of the stem and the threaded sleeve, which is a continuation of the bore.

In relation to the device, the task with the specified technical result is solved by the fact that in the valve mechanism comprising a housing, a valve, a rod, and the rod is a locking element of the passage section, which is designed to move gas after impact on the outer end of the rod, and a bypass hole, according to the invention, the case made in the form of a storage cylinder with a hole for supplying compressed gas from an external gas source, on one side of the housing a sleeve equipped with a sealing ring is installed in which the valve is connected with the formation of a cavity in the closed position of the valve between the valve and the sleeve, the bypass hole is located on the other side of the body, the inner end of the stem and the spring are installed in the valve hole, the bore is made between the outer end of the stem and the sleeve with the possibility of gas escape into the atmosphere, and between the valve and the sleeve wall and there are gaps between the valve and the inner end of the stem.

In addition, the sleeve is fixed in the housing using a threaded sleeve with a gap between the outer end of the stem and the threaded sleeve.

The invention is illustrated by drawings, in which:

in FIG. 1 is a longitudinal section through a valve mechanism;

in FIG. 2 - a longitudinal section of the valve mechanism at the time of impact on the rod;

in FIG. 3 is a longitudinal section through the valve mechanism at the time the valve is opened.

In FIG. 1-3 designations introduced:

1 - housing;

2 - sleeve;

3 - valve;

4 - threaded sleeve;

5 - stock;

6 - a sealing ring;

7 - spring;

8 - internal cavity;

9 - bypass hole;

10 - passage section;

11 - hole for the supply of compressed gas;

12 - the cavity between the valve and the sleeve;

13 - the surface of the valve, which is affected by compressed gas when closed;

14 - the gap between the valve and the wall of the sleeve;

15 - surface of the valve, which is affected by compressed gas when opened;

16 - the surface of the rod, which is affected by compressed gas at closing;

17 - hole in the valve;

18 - the bottom of the sleeve;

19 - wall of the sleeve;

20 - the gap between the valve and the stem.

The valve mechanism (see Fig. 1) consists of a housing 1, in which, using a threaded sleeve 4, a sleeve 2 is fixed, provided with a sealing ring 6, which is installed in the groove of the sleeve and provides sealing of the internal cavity 8 of the housing. In the walls 19 of the sleeve with an air gap 14, a valve 3 is installed, having an opening 17 in which the inner end of the rod 5 and the spring 7 are installed, with the formation in the closed position of the valve of the cavity 12 between the valve and the sleeve. The valve is made primarily of plastic. The outer end of the rod 5 passes through the sleeve 2 and the threaded sleeve 4 with a gap forming a passage section 10 with the release into the atmosphere. The bypass hole 9 is located on the side of the housing opposite from the passage section 10.

The housing has an opening 11 for supplying gas to the internal cavity 8 from an external source of high pressure gas.

The description of the method for short-term high-pressure gas supply is compatible with the description of the valve mechanism.

Gas under pressure is supplied to the internal cavity 8 of the housing. Gas fills the entire volume of the internal cavity 8. Through the gap 14 between the valve and the wall 19 of the sleeve gas enters the cavity 12 between the valve and the sleeve and through the gap 20 into the hole 17 in the valve. The pressure generated by the gas acts on the surface 13 of the valve and on the surface 16 of the stem. The stem 5 under the influence of the spring 7 and the pressure force on the area 16 is pressed to the bottom 18 of the sleeve and closes the passage section 10. The valve 3 under the action of the spring 7 and the pressure force on the surface 13 blocks the bypass hole 9. The valve is in the closed state.

After impact, the rod 5 begins to move inside the hole 17, while it compresses the spring 7 and overcomes the gas pressure on the surface 16. Moving, the rod 5 opens the bore 10 (see Fig. 2). Gas from the cavity 12 begins to seep through the passage 10 into the atmosphere. The pressure in the cavity 12 becomes equal to or slightly higher than atmospheric. The force generated by the gas pressure on the surface 13, which pressed the valve 3 against the bypass hole 9, disappears. The gas does not have time to fill the volume 12 through the gap 14. The gas pressure in the cavity 12 does not rise. The force 3 formed by the gas pressure on the surface 15 begins to act on the valve 3. Under the action of this force, the valve 3 begins to mix towards the sleeve 2, opening the bypass hole 9 (see Fig. 3). Gas under pressure begins to escape through the bypass hole 9 to perform the work of a pneumatic mechanism or firing a shot in a pneumatic weapon. Further, the valve 3, moving inside the sleeve 2, compresses the spring 7. The movement of the valve 3 is limited by the bottom 18 of the sleeve. At this point, the rod 5 under the action of the force of the spring 7 overlaps the bore 10 and remains pressed to the bottom 18 of the sleeve. The spring 7 begins to expand and pushes the valve 3 to the bypass hole 9, blocking it. After sealing the bypass hole 9, the compressed gas from the internal cavity 8 begins to fill the cavity 12 through the gap 14 and the hole 17 in the valve through the gap 20. The valve and the rod return to their original state.

To open the valve due to the impact on the stem 5, leading to the opening of the valve 3, does not require a large impact force due to the small surface of the stem 16, which acts on the compressed gas when the valve is closed.

The leakage of gas through the passage section 10 into the atmosphere after hitting the rod provides a rapid decrease in pressure in the cavity 12, which leads to a decrease in the response time of valve 3.

The valve mechanism can be located in the immediate vicinity or at a considerable distance from the gas source and can be connected with it, for example, through a flexible connection. This expands the possibilities of using a valve mechanism to supply a control action to actuators of various pneumatic mechanisms.

Claims (4)

1. The method of short-term high-pressure gas supply, which consists in creating a high gas pressure in the inner cavity of the housing equipped with a bypass hole and a bore, and the bore is closed with a valve, and the bore, with a rod, strike the outer end of the rod to discharge the gas pressure through the cross-section, which leads to the replacement of the gas pressure force acting on the closing of the valve, the gas pressure force to open it, the gas is released through the bypass hole, the valve is returned and the current in the initial position, closing the bypass valve with the valve, and the cross-section through the rod, characterized in that the housing is made in the form of an accumulating cylinder, which is sealed with a sleeve provided with a sealing ring, into which the valve is installed to form a cavity between the valve and the sleeve in the closed position of the valve, the inner end of the stem and the spring are installed in the valve hole, the bypass hole and the bore are separated from each other, high pressure gas is fed into the internal cavity to of the housing through the hole for supplying compressed gas from an external gas source, the discharge of gas upon impact on the rod is produced from the cavity between the valve and the sleeve and the holes in the valve through the passage section made in the form of a gap between the outer end of the rod and the sleeve, with the possibility of gas escape into the atmosphere, when the valve returns to its original position, the gas is filled with the cavity between the valve and the sleeve through the gap between the valve and the wall of the sleeve, and the holes in the valve are filled with gas through the gap between the inner end of the rod and the valve . 2. The method according to p. 1, characterized in that the sleeve is fixed in the housing using a threaded sleeve, which has a gap between the outer end of the stem and the threaded sleeve, which is a continuation of the bore. 3. A valve mechanism comprising a housing, a valve, a rod, and the rod is a locking element of passage section, which is designed to move gas after impact on the outer end of the rod, and a bypass hole, characterized in that the body is made in the form of a storage cylinder with a feed hole compressed gas from an external gas source, on one side of the housing a sleeve equipped with a sealing ring is installed, in which the valve is installed with the formation in the closed position of the valve of the cavity between the valve and the sleeve, the bypass hole is located on the other side of the body, the inner end of the stem and the spring are installed in the valve hole, the bore is made between the outer end of the stem and the sleeve with the possibility of gas outlet to the atmosphere, and there are gaps between the valve and the wall of the sleeve and between the valve and the inner end of the stem. 4. The valve mechanism according to claim 3, characterized in that the sleeve is fixed in the housing using a threaded sleeve with a gap between the outer end of the stem and the threaded sleeve.

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