CN206738650U - A kind of natural gas valve - Google Patents

Abstract

The utility model discloses a kind of natural gas valve, including valve body, sealing device and valve element, valve rod is installed in the middle part of the valve body, and valve rod upper end is provided with nut, the valve element lower end is provided with valve seat, and valve element is located at below sealing device, the valve element upper end is fixed with connecting rod, and small end is provided with valve rod, and gas outlet is provided with the left of the valve body, and gas outlet is internally provided with check valve, and conduit coupling is provided with the outside of the air inlet and gas outlet.The natural gas valve is provided with sealing device, it can prevent natural gas from being revealed from part junction, conduit coupling is made up of lock tooth snap ring, sealing ring, latch and lock ring, and sealing ring is provided with the right side of lock tooth snap ring, lock ring is installed on the left of latch, and lock tooth snap ring internal diameter and be more than sealing ring external diameter, lock tooth snap ring internal whorl matches with lock ring outside screw, it is simple in construction, can be by outside natural gas line fixation, and be easily installed and dismantle.

Description

a natural gas valve

technical field

The utility model relates to the technical field of valve equipment, in particular to a natural gas valve.

Background technique

Natural gas valve is a safety supporting device for gas pipeline engineering. It is used to cut off and connect the gas in the regulating pipeline. It has good control characteristics and closing and sealing performance. With the continuous improvement of people's living standards, the application of natural gas is becoming more and more Therefore, the safety of natural gas use is getting more and more attention. It is hoped that through the innovation of natural gas valves, the efficiency of equipment can be improved, safety can be improved, and the value can be maximized. With the development of natural gas valves, natural gas valves have developed to a great extent, and its development has brought great convenience to people when installing natural gas valves, and its types and quantities are also increasing day by day. Although there are many types and quantities of natural gas valves currently on the market, most of them are inconvenient to install, and cannot well restrict the flow of natural gas, and the safety is not high, which greatly limits the scope of use of natural gas valves, and It is not convenient and flexible to use.

Utility model content

The purpose of this utility model is to provide a natural gas valve to solve the problems of inconvenient installation and disassembly of natural gas valves on the market and poor sealing performance proposed by the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a natural gas valve, including a valve body, a sealing device and a valve core, a valve stem is installed in the middle of the valve body, and a nut is installed on the upper end of the valve stem, and the sealing device The upper end is fixed with a valve stem, and the sealing device is located inside the valve body, the right side of the valve body is provided with an air inlet, the lower end of the valve core is provided with a valve seat, and the valve core is located below the sealing device, and the upper end of the valve core is fixed There is a connecting rod, and the upper end of the connecting rod is provided with a valve stem, an air outlet is installed on the left side of the valve body, and a check valve is arranged inside the air outlet, and pipe connectors are arranged outside the air inlet and the air outlet.

Preferably, the height of the inner groove of the valve core is equal to the height of the valve seat.

Preferably, the pipe connector is composed of a locking tooth snap ring, a sealing ring, a locking tooth and a locking ring, and a sealing ring is provided on the right side of the locking tooth snap ring, a locking ring is installed on the left side of the locking tooth, and the locking tooth The inner diameter of the snap ring is larger than the outer diameter of the sealing ring, and the inner thread of the locking tooth snap ring matches the outer thread of the locking ring.

Preferably, the one-way valve includes a valve body, a baffle, a support rod and a spring, and the support rod passes through the baffle to connect with the valve body, and a spring is provided on the left side of the baffle.

Preferably, the left and right sides of the upper end of the connecting rod are concave structures, and the inside of the upper end of the sealing device is a convex structure, and the outer dimensions of the concave structures on the left and right sides of the upper end of the connecting rod match the outer dimensions of the inner convex structure of the upper end of the sealing device .

Compared with the prior art, the utility model has the beneficial effects that: the natural gas valve is provided with a sealing device, which can prevent the natural gas from leaking from the connection of the parts, the height of the inner groove of the valve core is equal to the height of the valve seat, and the valve seat can be installed just right. The groove at the lower end of the spool has good sealing performance. The pipe connector is composed of a locking tooth snap ring, a sealing ring, a locking tooth and a locking ring. A locking ring is installed, and the inner diameter of the locking tooth snap ring is larger than the outer diameter of the sealing ring. The internal thread of the locking tooth snap ring matches the outer thread of the locking ring. Installation and disassembly, the one-way valve includes a valve body, a baffle, a support rod and a spring, and the support rod passes through the baffle to connect with the valve body, and a spring is provided on the left side of the baffle, which can restrict the flow of natural gas. When the natural gas pressure is insufficient, The spring pushes the baffle to close the gas outlet to avoid the risk of natural gas leakage. The left and right sides of the upper end of the connecting rod are concave structures, and the inside of the upper end of the sealing device is a convex structure. The outer dimensions of the internal convex structure at the upper end of the sealing device match, and the connecting rod and the sealing device are in a sliding connection, and the rotation of the connecting rod can be restricted during the rising process.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of enlarged structure at A place in Fig. 1 of the utility model;

Fig. 3 is a structural schematic diagram of the utility model check valve;

Fig. 4 is a structural schematic diagram of the pipeline connector of the present invention.

In the figure: 1 valve body, 2, valve stem, 3, nut, 4, sealing device, 5, air inlet, 6, valve core, 7, valve seat, 8, air outlet, 9, pipe connector, 901, Lock tooth snap ring, 902, sealing ring, 903, bayonet, 904, locking ring, 10, one-way valve, 1001, valve body, 1002, baffle plate, 1003, supporting rod, 1004, spring, 11, connecting rod .

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-4, the utility model provides a technical solution: a natural gas valve, including a valve body 1, a sealing device 4 and a valve core 6, a valve stem 2 is installed in the middle of the valve body 1, and the upper end of the valve stem 2 is installed There is a nut 3, and the upper end of the sealing device 4 is fixed with the valve stem 2, which can prevent natural gas from leaking from the connection of the parts, and the sealing device 4 is located inside the valve body 1, the right side of the valve body 1 is provided with an air inlet 5, and the lower end of the valve core 6 is provided There is a valve seat 7, the height of the internal groove of the valve core 6 is equal to the height of the valve seat 7, and has good sealing performance, and the valve core 6 is located below the sealing device 4, and the upper end of the valve core 6 is fixed with a connecting rod 11, and the upper end of the connecting rod 11 The left and right sides are concave structures, the inside of the upper end of the sealing device 4 is a convex structure, and the external dimensions of the concave structures on the left and right sides of the upper end of the connecting rod 11 match the external dimensions of the internal convex structure at the upper end of the sealing device 4, and the connecting rod 11 and The sealing device 4 is a sliding connection, which can limit its rotation during the rising process of the connecting rod 11, and the upper end of the connecting rod 11 is provided with a valve stem 2, and the left side of the valve body 1 is equipped with an air outlet 8, and the inside of the air outlet 8 is provided with a single A one-way valve 10, the one-way valve 10 includes a valve body 1001, a baffle plate 1002, a support rod 1003 and a spring 1004, and the support rod 1003 penetrates through the baffle plate 1002 and is connected to the valve body 1001, and the left side of the baffle plate 1002 is provided with a spring 1004, which can Restrict the flow direction of natural gas. When the natural gas pressure is insufficient, the spring 1004 pushes the baffle 1002 to close the gas outlet to avoid the risk of natural gas leakage. The outer sides of the air inlet 5 and the gas outlet 8 are provided with pipeline connectors 9. The pipeline connectors 9 are formed by The locking tooth snap ring 901, the sealing ring 902, the locking tooth 903 and the locking ring 904 are composed, and the right side of the locking tooth snap ring 901 is provided with the sealing ring 902, and the locking ring 904 is installed on the left side of the locking tooth 903, and the locking tooth snap The inner diameter of the ring 901 is larger than the outer diameter of the sealing ring 902, and the inner thread of the lock tooth snap ring 901 matches the outer thread of the locking ring 904. It has a simple structure, can firmly fix the external natural gas pipeline, prevent natural gas from leaking, and is easy to install and disassemble.

Working principle: When using the natural gas valve, firstly, connect the pipeline connector 9 on the outside of the air inlet 5 and the gas outlet 8 with the external natural gas pipeline, first clamp the locking teeth 903 on the outside of the pipeline, and then lock the locking ring 904 Put it on the outside of the locking tooth 903, then put the locking tooth snap ring 901 on the outside of the sealing ring 902, and install the locking tooth snap ring 901 and the locking ring 904 through the thread to fasten the device and the pipeline, and then turn the valve stem 2, because The inside of the lower end is a threaded structure, so that the connecting rod 11 can be moved upwards, and then the valve core 6 can be moved upwards, so that the device can be penetrated. Into the valve 10, push the spring 1004 installed on the support rod 1003 to contract, and then push the baffle 1002 away, so that natural gas can pass through the valve body 1001, if the device leaks natural gas, there will be insufficient air pressure, and the spring 1004 will stretch Pushing the baffle plate 1002 automatically closes the device, improving the safety of the whole device, which is the whole working process of the natural gas valve.

Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art can modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principles of the utility model, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the utility model.

Claims (5)

1. A natural gas valve, comprising a valve body (1), a sealing device (4) and a valve core (6), characterized in that: a valve stem (2) is installed in the middle of the valve body (1), and the valve stem ( 2) A nut (3) is installed on the upper end, the valve stem (2) is fixed on the upper end of the sealing device (4), and the sealing device (4) is located inside the valve body (1), and the right side of the valve body (1) is set There is an air inlet (5), the lower end of the valve core (6) is provided with a valve seat (7), and the valve core (6) is located below the sealing device (4), and the upper end of the valve core (6) is fixed with a connecting rod (11), and the upper end of the connecting rod (11) is provided with a valve stem (2), the left side of the valve body (1) is equipped with an air outlet (8), and the inside of the air outlet (8) is provided with a check valve (10 ), the outer sides of the air inlet (5) and the air outlet (8) are provided with pipe connectors (9). 2. A natural gas valve according to claim 1, characterized in that: the height of the internal groove of the valve core (6) is equal to the height of the valve seat (7). 3. A natural gas valve according to claim 1, characterized in that: the pipeline connector (9) consists of a locking tooth snap ring (901), a sealing ring (902), a locking tooth (903) and a locking ring (904), and a sealing ring (902) is installed on the right side of the locking tooth snap ring (901), and a locking ring (904) is installed on the left side of the locking tooth (903), and the inner diameter of the locking tooth snap ring (901) is larger than the sealing ring ring (902) outer diameter, the inner thread of the locking tooth snap ring (901) matches the outer thread of the locking ring (904). 4. A natural gas valve according to claim 1, characterized in that: the one-way valve (10) includes a valve body (1001), a baffle (1002), a support rod (1003) and a spring (1004), And the supporting rod (1003) penetrates through the baffle (1002) and is connected with the valve body (1001), and a spring (1004) is arranged on the left side of the baffle (1002). 5. A natural gas valve according to claim 1, characterized in that: the left and right sides of the upper end of the connecting rod (11) are concave structures, the inner part of the upper end of the sealing device (4) is a convex structure, and the connecting rod (11) The external dimensions of the concave structures on the left and right sides of the upper end coincide with the external dimensions of the internal convex structures at the upper end of the sealing device (4).