Corrosion-resistant gas leakage-proof self-closing valve

Abstract

The utility model discloses a corrosion-resistant fuel gas leakproof self-closing valve, which relates to the technical field of self-closing valves, and comprises a valve casing main body, the right side of the top of the valve casing main body is movably connected with a manual valve, the bottom end of the manual valve is fixedly connected with a copper ball valve core, and the right side of the valve casing main body is provided with an interface assembly convenient for replacing a joint. According to the corrosion-resistant fuel gas leakage-proof self-closing valve, through the arrangement of the internal thread connecting cap, the sealing ring, the pagoda tip nozzle and the embedded pipe, when the corrosion-resistant fuel gas leakage-proof self-closing valve is used, if an access pipeline is a hose without a threaded connector, the internal thread connecting cap is arranged at the output end of the valve shell body in a sleeving mode and screwed tightly, the embedded pipe is embedded into the side edge of the valve shell body, and the sealing ring is matched to increase leakproofness; and the pagoda tip nozzle is directly inserted into the port of the hose and is further locked through the hoop, so that the function of conveniently replacing the output joint is realized, and the problem that the device does not have the function of conveniently replacing the output joint is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to self -closing valve technical field, concretely is a kind of corrosion -resistant gas leakproof self -closing valve. BACKGROUND

[0002] Gas leakproof self -closing valve is mainly used in gas pipeline, the feature is without electricity, when pipeline gas pressure appears underpressure, overpressure, abnormal flow can be automatically closed valve, it is the only active preventive security product in current domestic and foreign gas industry, that is, actively close before possible major accident, it is also the only legislation to determine the use of non-electronic security product in current domestic gas industry.

[0003] The corrosion -resistant gas leakproof self -closing valve commonly seen in current market is mostly similar in overall structure, valve body adopts aluminum alloy forging throughout, and is treated by heat, and it is strong in corrosion resistance, underpressure is closed by magnetic attraction, high pressure is closed by pressure, there is some deficiency in actual use process, there is certain improvement space, for example, the output end of valve is generally integrally cast with valve body, its size and specification are fixed, cannot be flexibly replaced according to actual installation condition, and the use flexibility is poor, and it does not have the function of facilitating replacement of output joint.

[0004] Now, a new type of corrosion -resistant gas leakproof self -closing valve is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model is aimed at providing a kind of corrosion -resistant gas leakproof self -closing valve to solve the problem of not having the function of facilitating replacement of output joint in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of corrosion -resistant gas leakproof self -closing valve, including valve shell main body, the steel positioning ring of two ends between inside the valve shell main body is fixedly connected, vertical transmission rod is vertically arranged in the inside of steel positioning ring, first hinged link is hinged in the right side of vertical transmission rod, second hinged link is movably connected in the left side of vertical transmission rod, internal thread joint is fixedly connected in the left side of valve shell main body, transverse transmission rod is transversely arranged in the left side of inside the valve shell main body, sealing plug is fixedly connected in the left side of transverse transmission rod, valve cover is fixedly connected in the top of valve shell main body, lifting rod is vertically arranged in the inside of valve cover, knob is fixedly connected in the top of lifting rod, fixed nut is screw-connected on the outside of lifting rod, rear permanent magnet sheet is fixedly connected in the bottom of lifting rod, hand valve is movably connected in the right side of the top of valve shell main body, copper ball valve core is fixedly connected in the bottom of hand valve, interface assembly facilitating replacement of joint is arranged in the right side of valve shell main body.

[0007] The interface assembly comprises an inner thread connection cap, which is threadedly connected to the right side of the valve shell body, the right side of the inner thread connection cap is glued with a sealing ring, and the right side of the inner thread connection cap is welded with a pagoda sharp nozzle, and the left side of the inner pagoda sharp nozzle is welded with an embedded pipe.

[0008] As a further technical scheme of the utility model, the valve shell body is movably connected with the first hinged rod, and the second hinged rod is movably connected with the transverse transmission rod.

[0009] As a further technical scheme of the utility model, the bottom end of the permanent magnet piece is attracted to the top end of the vertical transmission rod, and the vertical center lines of the vertical transmission rod, the permanent magnet piece and the lifting rod coincide.

[0010] As a further technical scheme of the utility model, the outer diameter of the embedded pipe is the same as the inner diameter of the right side of the valve shell body, and the right side of the valve shell body is attached to the left side of the sealing ring.

[0011] As a further technical scheme of the utility model, a second embedded annular groove is formed in the top end of the outer part of the valve shell body, a first embedded annular groove is formed in the outer ring of the top part of the valve cover, a steel connecting ring is sleeved at the joint of the valve shell body and the valve cover, a first embedded iron ring is fixedly connected to the top end in the steel connecting ring, and a second embedded iron ring is fixedly connected to the bottom end in the steel connecting ring.

[0012] As a further technical scheme of the utility model, the first embedded iron ring and the first embedded annular groove are adapted in position and size, and the second embedded iron ring and the second embedded annular groove are adapted in position and size.

[0013] As a further technical scheme of the utility model, a bottom diaphragm is sleeved at the bottom end of the outer part of the lifting rod, a top diaphragm is glued to the top end of the bottom diaphragm, and a plurality of reinforcing ribs are arranged between the bottom diaphragm and the top diaphragm.

[0014] As a further technical scheme of the utility model, the inner diameters of the bottom diaphragm and the top diaphragm are the same as the outer diameter of the lifting rod, the top end of the fixed nut is tightly attached to the top diaphragm, and the reinforcing ribs are arranged at equal intervals.

[0015] Compared with the prior art, the utility model has the advantages that the corrosion-resistant gas leakage prevention self-closing valve not only realizes the function of facilitating replacement of the output connector, but also realizes the functions of anti-disassembly reinforcement and diaphragm crack prevention.

[0016] (1) by setting the inner wire connection cap, sealing ring, pagoda sharp mouth and embedded pipe, use, the inner wire joint access to gas pipeline, the other side and gas stove butt joint, according to the actual situation of butt joint pipeline, such as with threaded interface, can be directly connected by screw, if for hose without thread interface, the inner wire connection cap is fitted in the output end of valve shell body and is screwed, the embedded pipe is embedded in the side of valve shell body, the sealing ring is matched to increase the airtightness, the pagoda sharp mouth is directly inserted into the hose port, then the clamp is further locked, the knob is lifted, the gas is lifted by the diaphragm through the pressure of the valve shell body, the second hinged rod and the horizontal transmission rod are in horizontal state, the sealing plug moves left and does not block the airflow, the diaphragm is inflated when overpressure, the second hinged rod moves up and pulls the sealing plug to move right to block the air inlet, the steel positioning ring and the permanent magnet piece attract, the second hinged rod moves down and pulls the sealing plug to move right to block the air inlet, realize the function of convenient replacement of output connector;

[0017] (2) by setting the steel connecting ring, the first embedded annular groove, the first embedded iron ring, the second embedded annular groove and the second embedded iron ring, when using, the steel connecting ring connects the valve shell body and the valve cover, the first embedded iron ring and the second embedded iron ring are concave at the edge and are clamped into the corresponding first embedded annular groove and second embedded annular groove, the gap is small, which can prevent the safety hidden danger caused by private disassembly, realize the function of anti-disassembly reinforcement;

[0018] (3) by setting the bottom diaphragm, the top diaphragm and the reinforcing rib, when using, the diaphragm is divided into two layers, the bottom diaphragm and the top diaphragm are used as the upper and lower layers of the diaphragm, and the reinforcing rib clamped in the middle can further increase the strength of the diaphragm, prolong the service life, reduce the cracking probability, realize the function of diaphragm cracking prevention. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view cross section structure schematic view of the utility model;

[0020] Figure 2 It is a front view cross section structure schematic view of the utility model's inner wire connection cap;

[0021] Figure 3 It is the utility model's Figure 1 It is a cross section enlarged structure schematic view of A place in the middle;

[0022] Figure 4 It is a bottom diaphragm bottom view partial cross section enlarged structure schematic view of the utility model.

[0023] In the figure: 1, valve shell main body; 2, first articulated rod; 3, vertical transmission rod; 4, second articulated rod; 5, horizontal transmission rod; 6, sealing plug; 7, inner thread joint; 8, steel positioning ring; 9, permanent magnet piece; 10, valve cover; 11, knob; 12, lifting rod; 13, fixed nut; 14, manual valve; 15, copper ball valve core; 16, inner thread connecting cap; 17, sealing ring; 18, pagoda sharp nozzle; 19, embedded pipe; 20, steel connecting ring; 21, first embedded annular groove; 22, first embedded iron ring; 23, second embedded annular groove; 24, second embedded iron ring; 25, bottom diaphragm; 26, top diaphragm; 27, reinforcing rib. DETAILED DESCRIPTION

[0024] 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 protection scope of the utility model.

[0025] Embodiment: please refer to Figures 1-4 A kind of corrosion-resistant gas leak-proof self-closing valve, including valve shell main body 1, steel positioning ring 8 is fixedly connected between the first and second ends in valve shell main body 1, vertical transmission rod 3 is vertically arranged in the inside of steel positioning ring 8, first articulated rod 2 is hinged in the right side of vertical transmission rod 3, second articulated rod 4 is movably connected in the left side of vertical transmission rod 3, inner thread joint 7 is fixedly connected in the left side of valve shell main body 1, horizontal transmission rod 5 is transversely arranged in the left side in valve shell main body 1, sealing plug 6 is fixedly connected in the left side of horizontal transmission rod 5, valve cover 10 is fixedly connected in the top end of valve shell main body 1, lifting rod 12 is vertically arranged in the inside of valve cover 10, knob 11 is fixedly connected in the top end of lifting rod 12, fixed nut 13 is screw-connected in the outside of lifting rod 12, rear permanent magnet piece 9 is fixedly connected in the bottom end of lifting rod 12, manual valve 14 is movably connected in the right side of the top of valve shell main body 1, copper ball valve core 15 is fixedly connected in the bottom end of manual valve 14, interface assembly for facilitating replacement joint is arranged in the right side of valve shell main body 1;

[0026] Please refer to Figures 1-4 A kind of corrosion-resistant gas leak-proof self-closing valve further includes interface assembly, and the interface assembly includes inner thread connecting cap 16, and inner thread connecting cap 16 is screw-connected in the right side of valve shell main body 1, sealing ring 17 is glued in the right side in the inside of inner thread connecting cap 16, pagoda sharp nozzle 18 is welded in the right side of inner thread connecting cap 16, embedded pipe 19 is welded in the left side in the inside of pagoda sharp nozzle 18;

[0027] The valve shell body 1 is movably connected with the first hinged rod 2, the second hinged rod 4 and the transverse transmission rod 5, the bottom end of the permanent magnet piece 9 is attracted to the top end of the vertical transmission rod 3, the vertical center lines of the vertical transmission rod 3, the permanent magnet piece 9 and the lifting rod 12 coincide, the outer diameter of the embedded pipe 19 is the same as the inner diameter of the right side of the valve shell body 1, the right side of the valve shell body 1 is in close contact with the left side of the sealing ring 17, the joint is convenient to replace, and the use is more flexible;

[0028] Specifically, as shown in Figure 1 and Figure 2 , the inner wire connecting cap 16 is sleeved on the output end of the valve shell body 1 and is screwed, the embedded pipe 19 is embedded in the side of the valve shell body 1, the sealing ring 17 is matched to increase the airtightness, the pagoda sharp nozzle 18 is directly inserted into the hose port, and then further locking is performed through the clamp.

[0029] The top end of the outside of the valve shell body 1 is provided with a second embedded annular groove 23, the outer ring of the top of the valve cover 10 is provided with a first embedded annular groove 21, the joint of the valve shell body 1 and the valve cover 10 is sleeved with a steel connecting ring 20, the top end inside of the steel connecting ring 20 is fixedly connected with a first embedded iron ring 22, the bottom end inside of the steel connecting ring 20 is fixedly connected with a second embedded iron ring 24, the position and size of the first embedded iron ring 22 and the first embedded annular groove 21 are matched, the position and size of the second embedded iron ring 24 and the second embedded annular groove 23 are matched, the airtightness is good, and it is not easy to be privately disassembled;

[0030] Specifically, as shown in Figure 1 and Figure 3 , the steel connecting ring 20 connects the valve shell body 1 and the valve cover 10, the first embedded iron ring 22 and the second embedded iron ring 24 of the edge are concave, and are clamped into the inside of the corresponding first embedded annular groove 21 and second embedded annular groove 23, the gap is small, and the safety hazard caused by private disassembly can be prevented.

[0031] The bottom end of the outside of the lifting rod 12 is sleeved with a bottom diaphragm 25, the top end of the bottom diaphragm 25 is glued with a top diaphragm 26, a plurality of reinforcing ribs 27 are arranged between the bottom diaphragm 25 and the top diaphragm 26, the inner diameter of the bottom diaphragm 25 and the top diaphragm 26 is the same as the outer diameter of the lifting rod 12, the fixed nut 13 is in close contact with the top end of the top diaphragm 26, the reinforcing ribs 27 are arranged at equal intervals, the diaphragm strength is high, and it is not easy to crack;

[0032] Specifically, as shown in Figure 1 and Figure 4 , the bottom diaphragm 25 and the top diaphragm 26 are the upper and lower two layers of diaphragms, and the reinforcing ribs 27 clamped in the middle can further increase the diaphragm strength, prolong the service life and reduce the probability of cracking.

[0033] Working principle: the utility model discloses in use, first, female joint 7 is connected into gas supply pipeline, and the other side is connected with gas stove, according to the actual situation of the butt joint pipeline, such as having threaded interface, can directly pass through threaded connection, if for the hose of not having threaded interface, then the female connection cap 16 is fitted in the output end of valve housing main body 1 and is screwed, the embedded pipe 19 is embedded in the side of valve housing main body 1, and cooperation sealing ring 17 increases the airtightness, lotus sharp nozzle 18 is directly inserted into the hose port, then further locking can be carried out through the clamp, the knob 11 is lifted, and the gas is lifted by the diaphragm by the pressure of valve housing main body 1, the second articulated rod 4, the horizontal transmission rod 5 is in horizontal state, and the sealing plug 6 left shift will not cause the obstruction of airflow, and the diaphragm is inflated when overpressure, and the second articulated rod 4 is moved up and sealing plug 6 is moved right and blocks the air inlet, and the steel positioning ring 8, permanent magnet sheet 9 is attracted when underpressure, and the second articulated rod 4 is moved down and sealing plug 6 is moved right and blocks the air inlet. Between valve housing main body 1 and valve cover 10, steel connecting ring 20 connects two, and the first embedded iron ring 22 and the second embedded iron ring 24 of its edge are concave, and are clamped into the first embedded annular groove 21 and the second embedded annular groove 23, the gap is small, and the safety hazard caused by private demolition can be prevented. The diaphragm is divided into two layers, and the bottom diaphragm 25 and the top diaphragm 26 are used as the upper and lower layers of the diaphragm, and the reinforcing rib 27 clamped in the middle can further increase the diaphragm strength, prolong the service life, and reduce the probability of cracking.

[0034] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

Claims

1. A corrosion-resistant gas leakage-proof self-closing valve comprising a valve shell body (1), characterized in that: The steel positioning ring (8) is fixedly connected between the two ends of the valve shell body (1), a vertical transmission rod (3) is vertically arranged in the steel positioning ring (8), a first hinged rod (2) is hingedly connected to the right side of the vertical transmission rod (3), a second hinged rod (4) is movably connected to the left side of the vertical transmission rod (3), an inner thread joint (7) is fixedly connected to the left side of the valve shell body (1), a transverse transmission rod (5) is transversely arranged in the left side of the valve shell body (1), a sealing plug (6) is fixedly connected to the left side of the transverse transmission rod (5), a valve cover (10) is fixedly connected to the top end of the valve shell body (1), a lifting rod (12) is vertically arranged in the valve cover (10), a lifting knob (11) is fixedly connected to the top end of the lifting rod (12), a fixing nut (13) is threadedly connected to the outer side of the lifting rod (12), a rear permanent magnet sheet (9) is fixedly connected to the bottom end of the lifting rod (12), a manual valve (14) is movably connected to the right side of the top of the valve shell body (1), a copper ball valve core (15) is fixedly connected to the bottom end of the manual valve (14), an interface assembly facilitating replacement of the joint is arranged on the right side of the valve shell body (1); The interface assembly comprises an inner thread connecting cap (16), the inner thread connecting cap (16) is threadedly connected to the right side of the valve shell body (1), a sealing ring (17) is glued to the right side in the inner thread connecting cap (16), a pagoda sharp nozzle (18) is welded to the right side of the inner thread connecting cap (16), and an embedded pipe (19) is welded to the left side in the pagoda sharp nozzle (18).

2. The corrosion-resistant gas leak-proof self-closing valve according to claim 1, characterized in that: The valve shell body (1) is movably connected with the first hinged rod (2), and the second hinged rod (4) is movably connected with the transverse transmission rod (5).

3. The corrosion-resistant gas leak-proof self-closing valve according to claim 1, characterized in that: The bottom end of the permanent magnet sheet (9) and the top end of the vertical transmission rod (3) are attracted to each other, and the vertical center lines of the vertical transmission rod (3), the permanent magnet sheet (9) and the lifting rod (12) coincide.

4. The corrosion-resistant gas leak-proof self-closing valve according to claim 1, characterized in that: The outer diameter of the embedded pipe (19) is the same as the inner diameter of the right side of the valve shell body (1), and the right side of the valve shell body (1) is in close contact with the left side of the sealing ring (17).

5. The corrosion-resistant gas leak-proof self-closing valve according to claim 1, characterized in that: A second embedded annular groove (23) is formed in the top end of the outer side of the valve shell body (1), a first embedded annular groove (21) is formed in the outer ring of the top of the valve cover (10), a steel connecting ring (20) is sleeved on the joint of the valve shell body (1) and the valve cover (10), a first embedded iron ring (22) is fixedly connected to the top end in the steel connecting ring (20), and a second embedded iron ring (24) is fixedly connected to the bottom end in the steel connecting ring (20).

6. The corrosion-resistant gas leak-proof self-closing valve according to claim 5, characterized in that: The position and size of the first embedded iron ring (22) and the first embedded annular groove (21) are matched, and the position and size of the second embedded iron ring (24) and the second embedded annular groove (23) are matched.

7. The corrosion-resistant gas leak-proof self-closing valve according to claim 1, characterized in that: A bottom diaphragm (25) is sleeved on the bottom end of the outer side of the lifting rod (12), a top diaphragm (26) is glued to the top end of the bottom diaphragm (25), and a plurality of reinforcing ribs (27) are arranged between the bottom diaphragm (25) and the top diaphragm (26).

8. The corrosion-resistant gas leak-proof self-closing valve according to claim 7, characterized in that: The inner diameter of the bottom diaphragm (25) and the top diaphragm (26) is the same as the outer diameter of the lifting rod (12), the fixing nut (13) and the top end of the top diaphragm (26) are tightly fitted, and the reinforcing ribs (27) are arranged at equal intervals.

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