CN211176793U - Spacing gas phase valve and use its handheld gas torch in ground - Google Patents

Abstract

The utility model belongs to the technical field of torches, and discloses a limit gas phase valve, which is used for a gas cylinder connector connected with a container tank, a valve body shell, a switch component and a limit component; the switch assembly comprises a thimble, a second elastic part and an eccentric rotating shaft assembly; the valve body shell is connected with the gas cylinder connector; part of the eccentric rotating shaft assembly is positioned in the valve body shell, part of the ejector pins are positioned in the gas cylinder joint, the eccentric rotating shaft assembly is horizontally arranged and used for driving the vertically arranged ejector pins to move downwards to open the container tank, and the second elastic component is vertically and fixedly arranged in the gas cylinder joint and used for driving the ejector pins to move upwards to close the container tank; the limiting assembly is connected with the eccentric rotating shaft assembly in a limiting mode and used for limiting the circumferential stroke and the axial stroke of the eccentric rotating shaft assembly, and the limiting assembly is installed on the valve body shell. The utility model also discloses a handheld gas torch in ground of using above-mentioned spacing gaseous phase valve. The utility model discloses a spacing gaseous phase valve is higher with the security of using its torch.

Description

Spacing gas phase valve and use its handheld gas torch in ground

Technical Field

The utility model relates to a torch technical field, concretely relates to spacing gaseous phase valve and use its ground hand-held type gas torch.

Background

With the gradual enhancement of the solid economy and the increasing development of the spiritual civilization construction in China, more and more various sports events or large-scale celebration activities are held in various places. Torch delivery is often indispensable as an important link to these activities. Since the torch is transferred by human-to-human relay, this requires a very high safety for the torch.

The existing torch is usually a ground handheld gas torch which is adopted during transmission, liquid propane is usually adopted as fuel for the ground handheld gas torch and stored in a container tank, the container tank is assembled on a control valve of the torch before transmission, a rotating shaft of the control valve is rotated, a valve body at the mouth of the container tank can be opened, and the liquid propane is gradually gasified under the condition of pressure reduction and enters a torch combustor through the control valve to be combusted. When liquid propane is gasified and enters the control valve, the pressure reaches over 0.6MPa, and the rotating shaft is dynamically sealed, so that the risk that the rotating shaft is pushed out of the control valve by high pressure exists, and further safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve the problem that there is the potential safety hazard in the control valve of current torch, the utility model provides a spacing gaseous phase valve.

The utility model also aims to provide a ground hand-held gas torch applying the limit gas phase valve.

A limit gas phase valve comprises a gas cylinder connector, a valve body shell, a switch assembly and a limit assembly, wherein the gas cylinder connector is connected with a container tank;

the switch assembly comprises a thimble, a second elastic part and an eccentric rotating shaft assembly;

the valve body shell is connected with the gas cylinder connector; part of the eccentric rotating shaft assembly is positioned in the valve body shell, part of the ejector pins are positioned in the gas cylinder joint, the eccentric rotating shaft assembly is horizontally arranged and used for driving the vertically arranged ejector pins to move downwards to open the container tank, and the second elastic component is vertically and fixedly arranged in the gas cylinder joint and used for driving the ejector pins to move upwards to close the container tank; the limiting assembly is connected with the eccentric rotating shaft assembly in a limiting mode and used for limiting the circumferential stroke and the axial stroke of the eccentric rotating shaft assembly, and the limiting assembly is installed on the valve body shell.

Preferably, the switch assembly comprises a thimble, an eccentric rotating shaft assembly for driving the thimble to move towards the container tank, and a second elastic component for driving the thimble to move away from the container tank;

one end of the thimble is dynamically connected with the eccentric rotating shaft component, so that the other end of the thimble penetrates through the gas cylinder connector and then is dynamically connected with the container tank, and the second elastic component is fixedly connected with the thimble.

Preferably, the eccentric rotary shaft assembly includes a rotary shaft and an eccentric member;

a stroke limiting groove is circumferentially formed in the shaft body of the rotating shaft, and a limiting assembly is connected in the stroke limiting groove in a limiting manner; the eccentric part is positioned in the valve body shell, and the rotating shaft is connected with the eccentric part and used for driving the eccentric part to rotate, so that the eccentric part is dynamically connected with the ejector pin.

Preferably, the shaft body of the rotating shaft is further provided with at least one sealing groove, the sealing grooves are circumferentially arranged, and a sealing ring is arranged in each sealing groove.

Preferably, a key hole is further formed in the rotating shaft, the key hole is axially arranged, and the key hole is located outside the valve body shell.

Preferably, the eccentric part comprises a limiting part and an eccentric part which are connected with each other; the limiting part is connected with the valve body shell in a limiting and rotating mode, and the rotating shaft is connected with the eccentric part and used for driving the eccentric part to be dynamically connected with the ejector pin.

The utility model also provides a ground hand-held gas torch, which comprises a container tank for containing liquid fuel, the limit gas phase valve and a pressure stabilizer for stabilizing gas pressure;

the gas cylinder connector is connected with the container tank, the valve body shell is connected with the pressure stabilizing device, and the inside of the limiting gas phase valve is communicated with the inside of the pressure stabilizing device to form a gas path channel;

the eccentric rotating shaft assembly is horizontally arranged and used for driving the ejector pin to move downwards so as to enable the inner cavity of the container tank to be communicated with the air channel; the second elastic part is fixedly arranged in the gas cylinder connector and used for driving the thimble to move upwards so as to separate the inner cavity of the container tank from the gas path channel.

Preferably, the container tank comprises a tank body and a valve body; the valve body is arranged in the tank body and is positioned at the bottleneck of the tank body, and the valve body is linked with the thimble.

Preferably, the valve body comprises a plug part, a movable part and an elastic supporting part;

the plug part is internally provided with a first limiting hole in an inverted T shape; the movable part is positioned in the first limiting hole and is in sliding limiting connection with the first limiting hole, the upper end of the movable part is connected with the ejector pin to realize downward movement of the movable part, and the lower end of the movable part is connected with the elastic supporting part to realize upward movement of the movable part;

the movable part is internally provided with a first gas path channel communicated with the gas path channel, and the first gas path channel is separated from or communicated with the inner cavity of the tank body by moving up or down the movable part.

Preferably, the elastic support portion comprises a support column and a first elastic component;

the support column is internally provided with a second air channel communicated with the inner cavity of the tank body, one end of the first spring is fixedly connected with the support column, and the other end of the first spring is fixedly connected with the movable part.

Preferably, the bottom of the movable part is provided with a limiting bulge, and the cross section area of the limiting bulge is larger than that of the lower end face of the first limiting hole.

Compared with the prior art, adopt above-mentioned scheme the utility model discloses a spacing gaseous phase valve's beneficial effect does:

the gas cylinder interface can enable the limiting gas phase valve to be tightly connected with the bottle opening of the container tank; because part of the eccentric rotating shaft assembly is positioned in the valve body shell, the other part of the eccentric rotating shaft assembly is positioned outside the valve body shell, and when the eccentric rotating shaft positioned outside the valve body shell is rotated, the vertically arranged thimble can be driven to move downwards so as to open the container can; and because the limiting component is connected with the eccentric rotating shaft component in a limiting way and is used for limiting the circumferential stroke of the eccentric rotating shaft component, when the eccentric rotating shaft component rotates to a limit position, the thimble opens the container tank, and at the moment, gas in the container tank flows out.

Compared with the prior art, adopt above-mentioned scheme the utility model discloses a beneficial effect of ground hand-held type gas torch does:

because the gas cylinder joint is connected with the container tank, the valve body shell is connected with the pressure stabilizing device, the inside of the limiting gas phase valve is communicated with the inside of the pressure stabilizing device to form a gas path channel, and the eccentric rotating shaft assembly is horizontally arranged and used for driving the thimble to move downwards so as to communicate the inner cavity of the container tank with the gas path channel; the second elastic part is fixedly arranged in the gas cylinder connector and used for driving the thimble to move upwards so as to separate the inner cavity of the container tank from the gas path channel; the pressure stabilizing assembly is used for stabilizing the gas pressure in the gas flow channel, so that when the thimble moves downwards, the container tank is opened and is communicated with the gas path channel, and the liquid fuel in the container tank flows out of the gas path channel after being gasified; when the thimble moves upwards, the container tank is closed, and the container tank is separated from the gas path channel, so that the liquid fuel in the container tank is prevented from flowing out of the container tank and being gasified; in addition, because the limiting component of the limiting gas phase valve of the utility model can limit the circumferential stroke of the eccentric rotating shaft component and also can limit the axial stroke of the eccentric rotating shaft component, the problem that the gas leaks out due to the fact that the eccentric rotating shaft component is pushed out of the valve body shell because the pressure of the gas path channel is too large can be avoided; in addition, due to the design of the pressure stabilizing device, the pressure of the gas in the gas path channel can be stabilized, the pressure in the gas path channel can be adjusted, and the gas pressure in the gas path channel is ensured to be proper.

Drawings

FIG. 1 is a schematic perspective view of a ground handheld gas torch according to the present invention;

FIG. 2 is a schematic structural view of a cross section A-A of the ground hand-held gas torch of the present invention;

FIG. 3 is a schematic structural diagram of an eccentric rotating shaft assembly in the gas phase valve;

FIG. 4 is a schematic sectional view of the container of the ground hand-held gas torch of the present invention;

FIG. 5 is a schematic view of the valve body structure of the canister of the present invention;

FIG. 6 is an exploded view of the valve body of the canister of the present invention;

fig. 7 is a schematic structural view of a B-B cross section of a valve body of a canister according to the present invention.

In the figure: 1. a canister; 11. a tank body; 12. a valve body; 121. a plug portion; 122. a movable portion; 123. an elastic support portion; 1211. a limiting hole; 1221. a first gas circuit channel; 1222. a limiting bulge; 1231. a support pillar; 1232. a first elastic member; 12311. a second gas path channel; 2. a limiting gas phase valve; 21. a gas cylinder connector; 22. a valve body housing; 23. a switch assembly; 24. a limiting component; 231. a thimble; 232. a second elastic member; 233. an eccentric rotating shaft assembly; 2331. a rotating shaft; 2332. an eccentric member; 23321. a limiting part; 23322. an eccentric portion; 23311. a stroke limiting groove; 23312. a sealing groove; 23313. a key hole; 3. and a voltage stabilizer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "upward", "downward", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

The embodiment provides a limit gas phase valve, as shown in fig. 1-2, comprising a gas cylinder connector 21 for connecting with a container tank, a valve body shell 22, a switch assembly 23 and a limit assembly 24;

the switch assembly 23 includes a thimble 231, a second elastic member 232 and an eccentric rotation shaft assembly 233;

the valve body shell 22 is connected with the gas cylinder connector 21; part of the eccentric rotating shaft assembly 233 is located in the valve body housing 22, part of the thimble 231 is located in the gas cylinder connector 21, the eccentric rotating shaft assembly 233 is horizontally arranged for driving the thimble 231 which is vertically arranged to move downwards to open the canister, and the second elastic member 232 is vertically and fixedly arranged in the gas cylinder connector 21 for driving the thimble 231 to move upwards to close the canister; the limiting assembly 24 is in limiting connection with the eccentric rotating shaft assembly 233 and is used for limiting the circumferential stroke and the axial stroke of the eccentric rotating shaft assembly 233, and the limiting assembly 24 is installed on the valve body shell 22.

The gas cylinder joint 21 of the embodiment is directly connected with the bottle opening of the container tank, so that the limit gas phase valve can be tightly connected with the container tank, and the problem of gas leakage at the joint is avoided.

In the embodiment, the gas cylinder connector 21 and the valve body shell 22 are integrally formed, so that connecting gaps can be reduced as much as possible, and the risk of gas leakage is reduced.

Since a part of the eccentric rotary shaft assembly 233 is located inside the valve body case 22 and the other part of the eccentric rotary shaft assembly 233 is located outside the valve body case 22, when the eccentric rotary shaft 233 located outside the valve body case 22 is rotated, the vertically disposed thimble 231 can be driven to move downward to open the canister; since the stopper member 24 is connected to the eccentric rotary shaft member 233 in a position-restricting manner and serves to restrict the circumferential stroke of the eccentric rotary shaft member 233, when the eccentric rotary shaft member 233 rotates to the limit position, the thimble 231 opens the tank, and at this time, the gas in the tank flows out, and since the stopper member 24 also has a function of restricting the axial stroke of the eccentric rotary shaft member 233, even if the pressure of the gas flowing out of the tank is high, the eccentric rotary shaft member 233 is not pushed out of the valve body case 22 by the gas, thereby improving the safety of the use of the position-restricting gas phase valve.

When the eccentric rotation shaft assembly 233 drives the thimble 231 to move downward, the thimble 231 moves downward to open the receptacle, and the second elastic member 232 is compressed; when the force of the eccentric rotary shaft assembly 233 on the thimble 231 is reduced, the second elastic member 232 is gradually restored to be deformed, so that the thimble 231 is moved upward, the thimble 231 is separated from the receptacle, and the receptacle is finally closed.

In a particular embodiment, as shown in fig. 3, the eccentric shaft assembly 233 includes a rotating shaft 2331 and an eccentric member 2332;

a stroke limiting groove 23311 is formed in the circumferential direction of the shaft body of the rotating shaft 2331, and a limiting component 24 is connected in the stroke limiting groove 23311 in a limiting manner; the eccentric part 2332 is positioned in the valve body case 22, and the rotating shaft 2331 is connected to the eccentric part 2332 for driving the eccentric part 2332 to rotate, so that the eccentric part 2332 is dynamically connected to the thimble 231.

When in use, the rotation of the rotating shaft 2331 drives the eccentric part 2332 to rotate, so that the eccentric part 2332 is dynamically connected with the thimble 231; for example, as shown in fig. 1, when the rotating shaft 2331 rotates from left to right, the eccentric member 2332 also rotates from left to right, and during this rotation, the eccentric member 2332 gradually changes from a force which does not act downward on the thimble 231 to a force which acts downward on the thimble 231, the thimble 231 moves downward by the action of the eccentric member 2332, the container is opened, and the second elastic member 232 is compressed; when the rotating shaft 2331 rotates from right to left again, the eccentric member 2332 also rotates from right to left, the downward force of the eccentric member 2332 on the thimble 231 is gradually reduced until it disappears, in the process, the second elastic member 232 is deformed again, so that the thimble 231 moves upward until the upward force of the second elastic member 232 on the thimble 231 disappears, and at this time, the container is closed; that is, the rotating shaft 2331 drives the eccentric member 2332 to rotate, so that the eccentric member 2332 is dynamically connected to the thimble 231, thereby opening or closing the canister.

In this embodiment, the second elastic member 232 may be elastic rubber or a spring.

Because the stroke limiting groove 23311 is circumferentially formed in the shaft body of the rotating shaft 2331, and the limiting assembly 24 is in limiting connection in the stroke limiting groove 23311, the circumferential stroke of the rotating shaft 2331 during rotation is limited by the stroke limiting groove 23311, and in addition, because of the existence of the stroke limiting groove 23311, the axial stroke of the rotating shaft 2331 is limited within a certain range, for example, in the embodiment, the axial stroke of the rotating shaft 2331 is hardly changed, so that the rotating shaft 2331 cannot be pushed out of the valve body housing 22 due to the overlarge air pressure in the valve body housing 22, and further, the problem of air leakage occurs.

In this embodiment, the limiting assembly 24 may be a limiting plate, as shown in fig. 2, a portion of the limiting plate extends into the stroke limiting groove 23311 to limit the circumferential stroke and the axial stroke of the rotating shaft 2331, and another portion is fixedly mounted on the outer side wall of the valve body housing 22 by screws.

In a specific embodiment, at least one sealing groove 23312 is further formed on the shaft body of the rotating shaft 2331, the sealing groove 23312 is circumferentially arranged, and a sealing ring is disposed in the sealing groove 23312 for enhancing the sealing effect.

For example, in this embodiment, two sealing grooves 23312 are formed on the shaft body of the rotating shaft 2331, the two sealing grooves 23312 are circumferentially arranged and parallel to each other, and a sealing ring is disposed in the sealing groove 23312, so that the sealing effect is further enhanced, and gas is prevented from flowing out of the valve body housing 22 from a gap between the rotating shaft 2331 and the valve body housing 22 during the rotation of the rotating shaft 2331.

In an embodiment, the rotating shaft 2331 further has a key hole 23313 formed therein, the key hole 23313 is axially disposed, and the key hole 23313 is located outside the valve body housing 22, so that the rotating shaft 2331 can be rotated more conveniently.

In this embodiment, keyhole 23313 is hexagonal in cross-section to better match existing studs that are hexagonal in cross-section.

In practical applications, the length of the rotation shaft 2331 is relatively short, and thus, a user may not easily grasp the rotation shaft, and thus, the key hole 23313 is opened, so that a key corresponding to the key hole 23313 can be inserted into the key hole 23313, and the user can rotate the rotation shaft 2331 only by rotating the key.

In a specific embodiment, the eccentric member 2332 includes a stopper 23321 and an eccentric 23322 connected to each other; the limiting part 23321 is connected with the valve body shell 22 in a limiting and rotating way, and the rotating shaft 2331 is connected with the eccentric part 23322 and used for driving the eccentric part 23322 to be dynamically connected with the thimble 231;

in this embodiment, the stopper 23321 and the eccentric 23322 may be connected by welding or may be integrally formed to reduce a connection gap and secure strength. For example, in this embodiment, the eccentric portion 23322 may be a cylinder, the stopper 23321 may be a circular truncated cone, and the central axis of the cylinder and the central axis of the circular truncated cone do not coincide with each other and are offset from each other in order to ensure that the thimble 231 can gradually move downward while the cylinder is rotating.

In this embodiment, the eccentric portion 23322 may be an eccentric.

The working process is as follows:

as shown in fig. 1, when a key is inserted into the key hole 23313, and the user rotates the rotation shaft 2331 from left to right, the circumferential stroke of the rotation shaft 2331 is limited to the stroke limiting groove 23311 because the limiting assembly 24 is positioned in the stroke limiting groove 23311, and the rotation of the rotation shaft 2331 is stopped when the rotation shaft 2331 cannot be rotated any more;

in the process of rotating the rotating shaft 2331, both the eccentric portion 23322 and the limiting portion 23321 rotate from left to right, so that the downward acting force of the eccentric portion 23322 on the thimble 231 is eliminated, so that the thimble 231 moves downward under the action of the downward acting force, so that the second elastic member 232 (such as a spring) fixedly connected with the thimble 231 is elastically deformed and compressed, the thimble 231 gradually opens the container, the gas in the container gradually flows into the valve body housing 22, and the rotating shaft 2331 stops rotating; because the rotating shaft 2331 is limited by the limiting assembly 24, even if the outward thrust of the gas in the valve body housing 22 on the rotating shaft 2331 is large, the rotating shaft 2331 cannot be pushed out of the valve body housing 22 by the gas under the limiting action of the limiting assembly 24, so that the gas leakage is caused;

when it is required to close the canister, a user inserts a key into the key hole 23313 and then rotates the rotation shaft 2331 from right to left, the circumferential stroke of the rotation shaft 2331 is limited in the stroke limiting groove 23311 because the limiting assembly 24 is positioned in the stroke limiting groove 23311, and the rotation of the rotation shaft 2331 is stopped when the rotation shaft 2331 cannot be rotated any more;

during the rotation of the rotating shaft 2331, the eccentric portion 23322 and the limiting portion 23321 are rotated from right to left, so that the downward force of the eccentric portion 23322 on the thimble 231 is gradually reduced until it disappears, and during this process, the compressed second elastic member 232 (e.g. a spring) is restored to deform to push the thimble 231 upward, so that the thimble 231 moves upward and the container is gradually closed.

Example 2

The embodiment provides a ground hand-held gas torch, as shown in fig. 1 and fig. 2, comprising a container tank 1 for containing liquid fuel, a limit gas phase valve 2 described in the embodiment 1, and a pressure stabilizer 3 for stabilizing gas pressure;

the gas cylinder joint 21 is connected with the container tank 1, the valve body shell 22 is connected with the pressure stabilizing device 3, and the inside of the limiting gas phase valve 2 is communicated with the inside of the pressure stabilizing device 3 to form a gas path channel;

the eccentric rotating shaft component 233 is horizontally arranged for driving the thimble 231 to move downwards so as to communicate the inner cavity of the container tank 1 with the air passage; the second elastic member 232 is fixedly disposed in the gas cylinder connector 21 and used for driving the thimble 231 to move upward so as to isolate the inner cavity of the canister 1 from the gas path channel.

Because the gas cylinder joint 21 is connected with the container tank 1, the valve body shell 22 is connected with the pressure stabilizing device 3, the inside of the limiting gas phase valve 2 is communicated with the inside of the pressure stabilizing device 3 to form a gas path channel, and the eccentric rotating shaft component 233 is horizontally arranged and used for driving the thimble 231 to move downwards so as to communicate the inner cavity of the container tank 1 with the gas path channel; the second elastic component 232 is fixedly arranged in the gas cylinder connector 21 and used for driving the thimble 231 to move upwards so as to separate the inner cavity of the container tank 1 from the gas path channel; the pressure stabilizing assembly 3 is used for stabilizing the gas pressure in the gas flow channel, so that when the thimble 231 moves downwards, the container tank 1 is opened, the container tank 1 is communicated with the gas path channel, and the liquid fuel in the container tank 1 is gasified and then flows out of the gas path channel; when the thimble 231 moves upward, the receptacle tank 1 is closed, and the receptacle tank 1 is separated from the gas path channel, so that the liquid fuel in the receptacle tank 1 is prevented from flowing out of the receptacle tank 1 and being gasified; in addition, because the limiting component 24 of the limiting gas phase valve 2 of the embodiment can limit not only the circumferential stroke of the eccentric rotating shaft component 233, but also the axial stroke of the eccentric rotating shaft component 233, the problem of gas leakage caused by the fact that the eccentric rotating shaft component 233 is pushed out of the valve body shell 22 due to overlarge pressure of the gas passage can be avoided; in addition, due to the design of the pressure stabilizing device 3, the pressure of the gas in the gas path channel can be stabilized, and the pressure stabilizing device can also be used for adjusting the pressure in the gas path channel to ensure that the pressure of the gas in the gas path channel is proper.

In the present embodiment, the pressure stabilizer 3 may be a pressure stabilizer valve.

In a specific embodiment, as shown in fig. 4, the canister 1 includes a canister body 11 and a valve body 12; the valve body 12 is arranged in the tank body 11 and is positioned at the bottleneck of the tank body 11, and the valve body 12 is linked with the thimble 231;

the valve body 12 is connected to the thimble 231 for convenience, and is used for better controlling the opening or closing of the tank 11;

in this embodiment, when the thimble 231 moves downward, the valve body 12 is opened, and the tank 11 is communicated with the gas path channel; when the thimble 231 moves upward, the valve body 12 is closed, and the canister 11 and the air passage are blocked.

In a particular embodiment, as shown in fig. 5-7, the valve body 12 includes a plug portion 121, a movable portion 122, and a resilient support portion 123;

the plug portion 121 is provided with a first limiting hole 1211 with an inverted T shape; the movable part 122 is located in the first position-limiting hole 1211 and is connected with the first position-limiting hole 1211 in a sliding position-limiting manner, the upper end of the movable part 122 is connected with the thimble 231 to move the movable part 122 downwards, and the lower end of the movable part 122 is connected with the elastic supporting part 123 to move the movable part 122 upwards;

a first air passage 1221 communicated with the air passage is formed in the movable part 122, and the first air passage 1221 is separated from or communicated with the tank body 11 by moving up or down the movable part 122.

When the thimble 231 moves downwards, the thimble is abutted against the top end of the movable part 122, so that the movable part 122 moves downwards, the elastic supporting part 123 is elastically deformed and compressed, the first air channel 1221 is communicated with the inner cavity of the tank body 11, the first air channel 1221 is also communicated with the air channel, so that the air channel is communicated with the inner cavity of the tank body 11, and the liquid fuel in the tank body 11 enters the air channel from the first air channel 1221, is gasified in the process of entering the air channel, finally flows out of the pressure stabilizing device 3 and is ignited and combusted;

when the thimble 231 moves upward, the elastic support portion 123 gradually returns to deform to jack up the movable portion 122 upward, so that the first air passage 1221 is blocked from the inner cavity of the tank 11, fuel in the tank 11 cannot flow out of the tank 11, and the container tank 1 is closed.

In a particular embodiment, the elastic support 123 includes a support column 1231 and a first elastic component 1232;

a second air passage 12311 communicated with the inner cavity of the tank body 11 is formed in the supporting column 1231, one end of the first elastic component 1232 is fixedly connected with the supporting column 1231, and the other end of the first elastic component is fixedly connected with the movable part 122;

when the thimble 231 moves downwards, the movable portion 122 moves downwards, the first elastic component 1232 is compressed, the first air passage 1221 is communicated with the inner cavity of the tank body 11 through the second air passage 12311, so that the inner cavity of the tank body 11 is communicated with the air passage, and the opening of the container tank 1 is realized;

when the thimble 231 moves upward, the first elastic member 1232 returns to deform, and the first elastic member 1231 jacks up the movable portion 122 until the first air passage 1221 is blocked from communicating with the second air passage 12311, so as to close the canister 11.

In a specific embodiment, the bottom of the movable portion 122 is provided with a limiting protrusion 1222, and the cross-sectional area of the limiting protrusion 1222 is larger than the cross-sectional area of the lower end surface of the first limiting hole 1211; this is to ensure that the movable portion 122 can better control the opening or closing of the canister by moving upward or downward.

Since the first position-limiting hole 1211 has an inverted T-shaped structure and the cross-sectional area of the position-limiting protrusion 1222 is larger than the cross-sectional area of the lower end surface of the first position-limiting hole 1211, that is, when the movable portion 122 moves upward, the position-limiting protrusion 1222 serves the purpose of limiting the upward movement of the movable portion 122, so as to prevent the movable portion 122 from being pushed out of the plug portion 121.

The working process of this example is explained in connection with example 1:

as shown in fig. 1, when a key is inserted into the key hole 23313, and the user rotates the rotation shaft 2331 from left to right, the circumferential stroke of the rotation shaft 2331 is limited to the stroke limiting groove 23311 because the limiting assembly 24 is positioned in the stroke limiting groove 23311, and the rotation of the rotation shaft 2331 is stopped when the rotation shaft 2331 cannot be rotated any more;

in the process of rotating the rotating shaft 2331, the eccentric portion 23322 and the limiting portion 23321 both rotate from left to right, so that the downward acting force of the eccentric portion 23322 on the thimble 231 is eliminated, so that the thimble 231 moves downward under the action of the downward acting force, so that the second elastic member 232 (such as a spring) fixedly connected with the thimble 231 is elastically deformed and compressed, the thimble 231 gradually abuts against the movable portion 122, so that the movable portion 122 moves downward, the first elastic member 1232 (such as a spring) is compressed, the first air passage 1221 is communicated with the inner cavity of the tank body 11 through the second air passage 12311, and further, the inner cavity of the tank body 11 is communicated with the air passage, thereby opening the container tank 1;

after the container tank 1 is opened, the gas in the container tank 1 sequentially passes through the second gas path channel 12311 and the first gas path channel 1221, enters a gas path channel formed by the communication of the limiting gas phase valve 2 and the pressure stabilizing device 3, finally flows out of a gas outlet of the pressure stabilizing device 3, and enters a combustor for ignition and combustion;

because the rotating shaft 2331 is limited by the limiting assembly 24, even if the outward thrust of the gas in the valve body housing 22 on the rotating shaft 2331 is large, the rotating shaft 2331 cannot be pushed out of the valve body housing 22 by the gas under the limiting action of the limiting assembly 24, so that the gas leakage is caused;

when it is required to close the canister, a user inserts a key into the key hole 23313 and then rotates the rotation shaft 2331 from right to left, the circumferential stroke of the rotation shaft 2331 is limited in the stroke limiting groove 23311 because the limiting assembly 24 is positioned in the stroke limiting groove 23311, and the rotation of the rotation shaft 2331 is stopped when the rotation shaft 2331 cannot be rotated any more;

during the rotation of the rotating shaft 2331, the eccentric portion 23322 and the limiting portion 23321 both rotate from right to left, so that the downward force of the eccentric portion 23322 on the thimble 231 is gradually reduced until it disappears, during which the compressed second elastic member 232 (e.g. a spring) is restored to be deformed, and the compressed first elastic member 1232 (e.g. a spring) is also restored to be deformed; in the process of restoring the deformation, the second elastic member 232 pushes the thimble 231 upward, so that the thimble 231 moves upward; the first elastic member 1232 (e.g., a spring) pushes the movable portion 122 upward during the process of restoring the deformation until the stopper protrusion 1222 can not move upward any more in the first stopper hole 1211, and at this time, the canister 1 is closed and gas can not enter the first gas passage 1221.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A limit gas phase valve, characterized by comprising a gas cylinder connector (21) for connecting with a container tank, a valve body shell (22), a switch component (23) and a limit component (24);

the switch assembly (23) comprises an ejector pin (231), a second elastic component (232) and an eccentric rotating shaft assembly (233);

the valve body shell (22) is connected with the gas cylinder connector (21); part of the eccentric rotating shaft assembly (233) is positioned in the valve body shell (22), part of the thimble (231) is positioned in the gas cylinder connector (21), the eccentric rotating shaft assembly (233) is horizontally arranged and used for driving the thimble (231) which is vertically arranged to move downwards so as to open the container tank, and the second elastic component (232) is vertically and fixedly arranged in the gas cylinder connector (21) and used for driving the thimble (231) to move upwards so as to close the container tank; the limiting assembly (24) is connected with the eccentric rotating shaft assembly (233) in a limiting mode and used for limiting the circumferential stroke and the axial stroke of the eccentric rotating shaft assembly (233), and the limiting assembly (24) is installed on the valve body shell (22).

2. A limiting gas phase valve as claimed in claim 1 wherein said eccentric rotating shaft assembly (233) comprises a rotating shaft (2331) and an eccentric member (2332);

a stroke limiting groove (23311) is formed in the circumferential direction of the shaft body of the rotating shaft (2331), and a limiting assembly (24) is connected in the stroke limiting groove (23311) in a limiting manner; the eccentric part (2332) is positioned in the valve body shell (22), and the rotating shaft (2331) is connected with the eccentric part (2332) and used for driving the eccentric part (2332) to rotate, so that the eccentric part (2332) is dynamically connected with the thimble (231).

3. The limiting gas phase valve according to claim 2, wherein the rotating shaft (2331) further comprises at least one sealing groove (23312) formed in the shaft body, the sealing groove (23312) is circumferentially arranged, and a sealing ring is disposed in the sealing groove (23312).

4. The limiting gas phase valve as recited in claim 2, wherein the rotating shaft (2331) further defines a key hole (23313) therein, the key hole (23313) being axially disposed, the key hole (23313) being located outside the valve body housing (22).

5. The limiting gas phase valve as claimed in claim 2, wherein the eccentric member (2332) comprises a limiting portion (23321) and an eccentric portion (23322) connected to each other; the limiting part (23321) is connected with the valve body shell (22) in a limiting and rotating mode, and the rotating shaft (2331) is connected with the eccentric part (23322) and used for driving the eccentric part (23322) to be dynamically connected with the ejector pin (231).

6. A ground-held gas torch, characterized in that it comprises a tank (1) for containing liquid fuel, a limiting gas phase valve (2) according to any of claims 1-5, and pressure-stabilizing means (3) for stabilizing the gas pressure;

the gas cylinder connector (21) is connected with the container tank (1), the valve body shell (22) is connected with the pressure stabilizing device (3), and the inside of the limiting gas phase valve (2) is communicated with the inside of the pressure stabilizing device (3) to form a gas path channel;

the eccentric rotating shaft assembly (233) is horizontally arranged and used for driving the thimble (231) to move downwards so as to enable the inner cavity of the container tank (1) to be communicated with the air channel; the second elastic component (232) is fixedly arranged in the gas cylinder connector (21) and used for driving the thimble (231) to move upwards so as to separate the inner cavity of the container tank (1) from the gas path channel.

7. Ground-based hand-held gas torch according to claim 6, characterised in that the vessel tank (1) comprises a tank body (11) and a valve body (12); the valve body (12) is arranged in the tank body (11) and is positioned at the bottle mouth of the tank body (11), and the valve body (12) is linked with the thimble (231).

8. Ground-held gas torch according to claim 7, characterised in that said valve body (12) comprises a plug portion (121), a mobile portion (122) and an elastic support portion (123);

the plug part (121) is internally provided with a first limiting hole (1211) in an inverted T shape; the movable part (122) is positioned in the first limiting hole (1211) and is in sliding limiting connection with the first limiting hole (1211), the upper end of the movable part (122) is connected with the thimble (231) to realize downward movement of the movable part (122), and the lower end of the movable part (122) is connected with the elastic supporting part (123) to realize upward movement of the movable part (122);

a first air passage (1221) communicated with the air passage is formed in the movable part (122), and the first air passage (1221) is separated from or communicated with the inner cavity of the tank body (11) through the upward movement or the downward movement of the movable part (122).

9. Ground-held gas torch according to claim 8, characterized in that said elastic support (123) comprises a support column (1231) and a first elastic part (1232);

the support column (1231) is internally provided with a second air channel (12311) communicated with the inner cavity of the tank body (11), one end of the first elastic component (1232) is fixedly connected with the support column (1231), and the other end of the first elastic component is fixedly connected with the movable part (122).

10. The ground-held gas torch according to claim 8, wherein the bottom of the movable part (122) is provided with a limit projection (1222), and the cross-sectional area of the limit projection (1222) is larger than the cross-sectional area of the lower end surface of the first limit hole (1211).

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