Cylinder valve of gas cylinder

Abstract

The utility model discloses a cylinder valve of a gas cylinder. A valve assembly is arranged at the top of a cylinder body; the valve assembly comprises a valve body and a connecting piece which are in threaded sleeving connection with each other, an inner cavity of the valve body is in threaded sleeving connection with a lead screw, an inner cavity of the lead screw is slidably sleeved with a rotating rod, the top of the rotating rod is in threaded sleeving connection with a bolt, the surface of the valve body is rotationally sleeved with a rotating disc, and fastening assemblies are symmetrically arranged between the rotating disc and the lead screw. A second valve element is fixedly connected to one end of the lead screw, limiting strips are symmetrically arranged on the surface of one end of the rotating rod, a sleeve plate is arranged in an inner cavity of the upper end of the connecting piece, a hollow lead screw is in threaded sleeve connection with an inner cavity of the sleeve plate, a first valve element is fixedly connected to one end of the hollow lead screw, and cross-shaped sliding grooves are symmetrically formed in an inner cavity of the hollow lead screw. The utility model relates to the technical field of valves. According to the cylinder valve of the gas cylinder, the problems that gas in an inner cavity of the gas cylinder cannot be sealed in the replacement process of the cylinder valve of the gas cylinder, so that the gas in the inner cavity of the gas cylinder is completely leaked, and the gas is wasted are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a gas cylinder valve. BACKGROUND

[0002] The gas cylinder valve is the valve device for controlling the gas cylinder, which is installed on the top of the gas cylinder. It is one of the main accessories of the gas cylinder, usually composed of valve body, valve core, sealing ring and other parts, and the gas flow path is opened or closed by rotating the valve core.

[0003] At present, the valve needs to be replaced when the gas cylinder valve leaks, but the gas in the gas cylinder cavity cannot be sealed during the replacement process, resulting in the leakage of all the gas in the gas cylinder cavity, which will waste the gas, so the gas in the gas cylinder cavity cannot be saved when the leaking valve is replaced. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of the prior art, the utility model provides a gas cylinder valve, which solves the problem that the gas in the gas cylinder cavity cannot be sealed during the replacement of the gas cylinder valve, resulting in the leakage of all the gas in the gas cylinder cavity, which will waste the gas.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: a gas cylinder valve, comprising a bottle body, the top of the bottle body is provided with a valve assembly; the valve assembly comprises a valve body and a connecting piece, and is screwed together, the inner cavity of the valve body is screwed with a lead screw, and the inner cavity of the lead screw is slidably connected with a rotating rod, the top of the rotating rod is screwed with a bolt, the surface of the valve body is rotatably connected with a rotating disc, and a fastening assembly is symmetrically arranged between the rotating disc and the lead screw, one end of the lead screw is fixedly connected with a second valve core, and the surface of one end of the rotating rod is symmetrically provided with a limiting strip, the inner cavity of the upper end of the connecting piece is provided with a sleeve plate, and the inner cavity of the sleeve plate is screwed with a hollow lead screw, one end of the hollow lead screw is fixedly connected with a first valve core, and the inner cavity of the hollow lead screw is symmetrically provided with a cross-shaped sliding groove, and the limiting strip and the cross-shaped sliding groove are slidably connected.

[0006] Preferably, the fastening assembly comprises a sleeve and a sliding rod, and the sliding rod is slidably connected in the sleeve, the inner cavity of the sleeve is provided with a socket, the surface of the sliding rod is slidably connected with a plug through a strong spring, and a tension spring is arranged between the sleeve and the sliding rod.

[0007] Preferably, the plug and the socket are connected with each other.

[0008] Preferably, the sleeve and the sliding rod are fixedly connected at the top of the lead screw and the bottom of the rotating disc respectively.

[0009] Preferably, the bolt is screwed on the rotating disc, and the connecting piece is screwed on the port at the top of the bottle body.

[0010] Preferably, the surface of the valve body is provided with an air pressure gauge.

[0011] The utility model provides a gas cylinder valve. Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1、 the gas cylinder valve, through when the second valve core appears the condition of leakage, press the rotating rod, make the one end of rotating rod enter the inner chamber of hollow screw rod, and the limit strip also inserts into the cross slide, simultaneously will drive the rotating disc also drops and makes the fastening assembly retracts, then rotates the rotating rod and drives the hollow screw rod to go up and down, thereby make first valve core and connecting piece seal, then again open the connection of rotating rod and hollow screw rod, the valve body directly with connecting piece is disassembled, like this can guarantee the gas in the bottle body inner chamber not to leak when replacing the valve, preserves the gas in the gas cylinder inner chamber.

[0013] 2、 the gas cylinder valve, through when the rotating rod and hollow screw rod are inserted, and the bolt and the rotating disc are fixed, like this rotating rod, rotating disc and screw rod fixed integral, therefore directly rotating the screw rod can control second valve core and first valve core to go up and down simultaneously, realizes opening and closing and closes, can realize the effect of double seal. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structure schematic view of the utility model;

[0015] Figure 2 It is structure valve door assembly schematic view of the utility model;

[0016] Figure 3 It is structure valve door assembly sectional view of the utility model;

[0017] Figure 4 It is structure valve door assembly partial schematic view of the utility model;

[0018] Figure 5 It is structure of the utility model Figure 4 A partial enlarged schematic view;

[0019] Figure 6 It is structure fastening assembly schematic view of the utility model.

[0020] In the drawing: 1, bottle body;2, valve door assembly;21, valve body;22, screw rod;23, rotating rod;24, bolt;25, rotating disc;26, fastening assembly;261, sleeve;262, sliding rod;263, strong spring;264, plug;265, jack;266, tension spring;27, connecting piece;28, air pressure gauge;29, hollow screw rod;210, sleeve plate;212, first valve core;213, second valve core;214, cross slide;215, limit strip. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Please refer to Figures 1-2 The utility model provides a kind of technical scheme: a gas cylinder valve, including bottle body 1, the top of bottle body 1 is provided with valve assembly 2, wherein valve assembly 2 is installed at the top of bottle body 1, for the delivery of gas.

[0023] Please refer to Figures 3-5 Valve assembly 2 includes valve body 21 and connecting piece 27, and connecting piece 27 is threadedly sleeved on the port at the top of bottle body 1, and is threadedly sleeved with each other, the inner cavity of valve body 21 is threadedly sleeved with screw rod 22, and the inner cavity of screw rod 22 is slidably sleeved with rotating rod 23, the top of rotating rod 23 is threadedly sleeved with bolt 24, bolt 24 is threadedly sleeved on rotating disc 25, the surface of valve body 21 is rotatably sleeved with rotating disc 25, and fastening assembly 26 is symmetrically arranged between rotating disc 25 and screw rod 22, one end of screw rod 22 is fixedly connected with second valve core 213, and the surface of one end of rotating rod 23 is symmetrically provided with limit strip 215, the inner cavity of the upper end of connecting piece 27 is provided with sleeve plate 210, and the inner cavity of sleeve plate 210 is threadedly sleeved with hollow screw rod 29, one end of hollow screw rod 29 is fixedly connected with first valve core 212, the inner cavity of hollow screw rod 29 is symmetrically provided with cross-shaped sliding groove 214, limit strip 215 and cross-shaped sliding groove 214 are slidably connected with each other, the surface of valve body 21 is provided with pressure gauge 28, wherein pressure gauge 28 is used to detect the pressure of gas, wherein first valve core 212 and second valve core 213 respectively match with the inner cavity of connecting piece 27 and valve body 21 to form sealing, and the surface of valve body 21 is provided with connecting port, by screw rod 22 rotation drives second valve core 213 to extrude in the inner cavity of valve body 21 to seal, in addition, by fastening assembly 26 retraction fastening, and driving rotating rod 23 to slide in the inner cavity of screw rod 22, make rotating rod 23 bottom enter the inner cavity of hollow screw rod 29, simultaneously, limit strip 215 slides into cross-shaped sliding groove 214, make rotating rod 23 and hollow screw rod 29 limit, then rotate rotating rod 23 to make rotating rod 23 drive hollow screw rod 29 to slide on sleeve plate 210, so that first valve core 212 extrudes in the inner cavity of connecting piece 27 to form sealing.

[0024] In addition, when rotating rod 23 drops against the port of hollow screw rod 29, and limit strip 215 and cross-shaped sliding groove 214 are not aligned, directly press rotating rod 23, drive limit strip 215 to rotate, until limit strip 215 and cross-shaped sliding groove 214 match and insert.

[0025] Please refer to Figure 6 The fastening assembly 26 comprises a sleeve 261 and a slide rod 262, which are fixedly connected at the top of the screw rod 22 and the bottom of the rotating disc 25 respectively, and the slide rod 262 is slidingly sleeved in the sleeve 261. The inner cavity of the sleeve 261 is provided with a insertion hole 265, the surface of the slide rod 262 is slidingly sleeved with a plug 264 through a strong spring 263, a tension spring 266 is arranged between the sleeve 261 and the slide rod 262, the plug 264 and the insertion hole 265 are connected with each other by insertion, the plug 264 is extruded into the inner cavity of the sleeve 261 by extruding the slide rod 262 in the inner cavity of the sleeve 261, and finally the plug 264 is inserted into the insertion hole 265 by the elastic force of the strong spring 263 for limiting, and the tension spring 266 is reset. The elastic force of the strong spring 263 is greater than that of the tension spring 266, so that the plug 264 can be fixed by being inserted into the insertion hole 265.

[0026] During work or use, the connecting piece 27 is screwed on the top of the bottle body 1 during installation, and then the valve body 21 is screwed on the connecting piece 27, at this time the rotating rod 23 does not contact the hollow screw rod 29, and the second valve core 213 and the first valve core 212 are in a closed state.

[0027] Then the rotating rod 23 is pressed, so that the rotating rod 23 slides in the inner cavity of the screw rod 22, one end of the rotating rod 23 enters the inner cavity of the hollow screw rod 29, the limiting strip 215 also inserts into the cross-shaped sliding groove 214, and the rotating disc 25 is also lowered to make the slide rod 262 slide in the sleeve 261 and extrude the plug 264 to retract, so that the plug 264 enters the inner cavity of the sleeve 261 until the plug 264 is inserted into the insertion hole 265 by the elastic force of the strong spring 263. In this way, the rotating rod 23 is retracted, then the rotating rod 23 is rotated and the hollow screw rod 29 is lifted on the sleeve plate 210 through the limiting of the limiting strip 215 and the cross-shaped sliding groove 214, so that the first valve core 212 is not sealed with the connecting piece 27, and the connecting piece 27 can be ventilated, then the rotating rod 23 is pulled, so that the plug 264 is separated from the insertion hole 265, and the sleeve 261 is reset through the tension spring 266, so that one end of the rotating rod 23 is separated from the inner cavity of the hollow screw rod 29, then the screw rod 22 is rotated to lift the second valve core 213, so that the second valve core 213 is not sealed with the valve body 21, and only the second valve core 213 is used for opening and closing in the use process, while the first valve core 212 is in an open state.

[0028] In addition, when the rotating rod 23 and the hollow screw rod 29 are inserted, the bolt 24 is fixed with the rotating disc 25, so that the rotating rod 23, the rotating disc 25 and the screw rod 22 are fixed integrally, and therefore the screw rod 22 can be directly rotated to control the second valve core 213 and the first valve core 212 to simultaneously lift, realize opening and closing, and realize the effect of double sealing.

[0029] Therefore, when the second valve core 213 leaks, the first valve core 212 can be sealed according to the above steps, then the connection between the rotating rod 23 and the hollow screw rod 29 is disassembled, and the valve body 21 is directly disassembled from the connecting piece 27, so that the gas in the bottle body 1 can be prevented from leaking when the valve is replaced.

[0030] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the statement "including a limited element" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cylinder valve comprising a cylinder body (1), characterised in that: The top of the bottle body (1) is provided with a valve assembly (2); the valve assembly (2) comprises a valve body (21) and a connecting piece (27), and is screwed together, the inner cavity of the valve body (21) is screwed with a lead screw (22), and the inner cavity of the lead screw (22) is slidably connected with a rotating rod (23), the top of the rotating rod (23) is screwed with a bolt (24), the surface of the valve body (21) is rotatably connected with a rotating disc (25), and the rotating disc (25) and the lead screw (22) are symmetrically provided with a fastening assembly (26), one end of the lead screw (22) is fixedly connected with a second valve core (213), and the surface of one end of the rotating rod (23) is symmetrically provided with a limiting strip (215), the inner cavity of the upper end of the connecting piece (27) is provided with a sleeve plate (210), and the inner cavity of the sleeve plate (210) is screwed with a hollow lead screw (29), one end of the hollow lead screw (29) is fixedly connected with a first valve core (212), and the inner cavity of the hollow lead screw (29) is symmetrically provided with a cross-shaped sliding groove (214), and the limiting strip (215) and the cross-shaped sliding groove (214) are slidably connected.

2. The cylinder valve according to claim 1, characterized in that: The fastening assembly (26) comprises a sleeve (261) and a sliding rod (262), and the sliding rod (262) is slidably connected in the sleeve (261), the inner cavity of the sleeve (261) is provided with a jack (265), the surface of the sliding rod (262) is slidably connected with a plug (264) through a strong spring (263), and the sleeve (261) and the sliding rod (262) are provided with a tension spring (266).

3. A cylinder valve according to claim 2, characterised in that: The plug (264) and the jack (265) are connected with each other.

4. The cylinder valve according to claim 2, characterized in that: The sleeve (261) and the sliding rod (262) are fixedly connected to the top of the lead screw (22) and the bottom of the rotating disc (25) respectively.

5. The cylinder valve according to claim 1, characterized in that: The bolt (24) is screwed on the rotating disc (25), and the connecting piece (27) is screwed on the port at the top of the bottle body (1).

6. The cylinder valve according to claim 1, characterized in that: The surface of the valve body (21) is provided with a pressure gauge (28).

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