CN216692314U

CN216692314U - Pressure relief safety valve for gas water heater

Info

Publication number: CN216692314U
Application number: CN202123056587.2U
Authority: CN
Inventors: 陈华强; 陈鸿; 陈洁
Original assignee: Zhejiang Huadi Electronic Co ltd
Current assignee: Zhejiang Huadi Electronic Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-06-07
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to the technical field of safety valves, in particular to a pressure relief safety valve for a gas water heater, which comprises a valve pipe, wherein an internal channel of the valve pipe is of a reducing channel structure with one end being thin and the other end being wide, a conical sealing surface is arranged between the thin channel and the wide channel, a valve plug is arranged in a wide section of the internal channel of the valve pipe, and one end of the wide channel of the valve pipe is in threaded connection with a connecting cover. The adjustment of pressure relief pressure and the fatigue compensation of the spring are realized.

Description

Pressure relief valve for gas water heater

Technical Field

The utility model relates to the technical field of valves, in particular to a pressure relief safety valve for a gas water heater.

Background

The safety valve is a safety device for preventing pressure equipment and a container or the pressure in the container from being increased easily or bursting due to the fact that the pressure exceeds the limit, sealing parts of a valve core of the safety valve in the market at present are numerous, a plurality of complex assembly procedures are needed, and assembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art in the background art, and provides a pressure relief safety valve for a gas water heater.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a pressure release relief valve for gas heater, includes the valve pipe, the inner channel of valve pipe is the reducing channel structure of the thin footpath of one end, the wide footpath of the other end to be provided with the sealed face of toper between thin footpath passageway and the wide footpath passageway, be provided with the valve plug in the wide footpath section of valve pipe inner channel to valve pipe wide footpath passageway one end threaded connection has the connecting cover, the middle part of connecting cover is provided with the screw hole to the inner thread connection of screw hole has hollow regulation head, the inside of valve pipe just is located and is provided with the spring between one side of hollow regulation head and one side of valve plug.

Preferably, the tapered sealing surface is provided with two stages in a step shape, and the front end of the valve plug is provided with an adaptive conical surface matched with the tapered sealing surface.

Preferably, one side of the surface of the adapting conical surface, which is far away from the spring, is provided with a primary sealing pair, and one side of the surface of the adapting conical surface, which is close to the spring, is provided with a secondary sealing pair.

Preferably, the thickness of the primary sealing pair is equal to the height difference of the two-stage conical sealing surfaces, and the thickness of the secondary sealing pair is larger than that of the primary sealing pair.

Preferably, all be provided with the guide wing around the valve plug to the wide footpath passageway inner wall of valve pipe is provided with and leads wing matched with bar groove.

Preferably, the surface of the hollow adjusting head is provided with an external thread matched with the threaded hole, and one end of the hollow adjusting head is provided with an adjusting port.

The utility model has at least the following beneficial effects:

1. the valve main body is composed of the valve pipe, the valve plug, the connecting cover, the hollow connector and the spring, a valve rod structure is avoided, the parts are simple in structure and easy to assemble, and the assembling and maintaining efficiency of the valve body can be greatly improved;

2. through the matching of the two-stage step-shaped conical sealing surface and the double sealing pair, the sealing can be realized by the two-stage sealing pair after the first-stage sealing pair is worn, and the service life of the valve plug is greatly prolonged;

3. through the setting of hollow regulation head, the extrusion power of spring is adjusted to the rotatory hollow regulation head of accessible, realizes the fatigue compensation of the regulation of pressure release pressure and spring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;

FIG. 3 is a side view of the valve tube and plug configuration of the present invention;

FIG. 4 is a side view of the connecting cover and hollow regulating head structure of the present invention.

In the figure: 1. a valve tube; 2. a tapered sealing surface; 3. a valve plug; 4. a connecting cover; 5. a threaded hole; 6. a hollow adjusting head; 7. a spring; 8. adapting the conical surface; 9. a primary sealing pair; 10. a secondary sealing pair; 11. a guide wing; 12. a strip-shaped groove; 13. and adjusting the port.

Detailed Description

For the purpose of making 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 accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1-4, a pressure relief safety valve for a gas water heater, including a valve pipe 1, an internal channel of the valve pipe 1 is a diameter-variable channel structure with a small diameter at one end and a wide diameter at the other end, and a tapered sealing surface 2 is arranged between the small diameter channel and the wide diameter channel, a valve plug 3 is arranged in a wide diameter section of the internal channel of the valve pipe 1, and one end of the wide diameter channel of the valve pipe 1 is in threaded connection with a connection cover 4, a threaded hole 5 is arranged in the middle of the connection cover 4, and a hollow adjusting head 6 is connected with the internal thread of the threaded hole 5, and a spring 7 is arranged in the valve pipe 1 and between one side of the hollow adjusting head 6 and one side of the valve plug 3.

The scheme has the following working processes:

during the assembly, fill in behind 11 alignment bar grooves 12 of guide wing with valve plug 3, install spring 7 additional to valve plug 3's in the valve pipe 1 top again, take off lid 4 screw assembly with hollow regulation head 6 and the coming year, will connect lid 4 and valve pipe 1 screw assembly again, make the restriction to spring 7 of the end completion of hollow regulation head 6, accomplish the assembly operation of valve body promptly, and the steam generator has a simple structure, easy to maintain's advantage, according to the rotatable carry compensation after adjusting hollow regulation head 6 with the opening pressure regulation or spring 7 fatigue that realizes valve plug 3 of demand.

Furthermore, the conical sealing surface 2 is provided with two stages in a step shape, and the front end of the valve plug 3 is provided with an adaptive conical surface 8 matched with the conical sealing surface 2.

Furthermore, a primary sealing pair 9 is arranged on one side, far away from the spring 7, of the surface of the adapting conical surface 8, and a secondary sealing pair 10 is arranged on one side, close to the spring 7, of the surface of the adapting conical surface 8.

Furthermore, the thickness of the first-stage sealing pair 9 is equal to the height difference of the two-stage conical sealing surfaces 2, the thickness of the second-stage sealing pair 10 is larger than that of the first-stage sealing pair 9, the second-stage sealing pair 10 automatically replaces the first-stage sealing pair 9 after the first-stage sealing pair 9 is worn, and the double-stage sealing pair structure has longer service life compared with a traditional sealing structure.

Further, all be provided with around the valve plug 3 and lead wing 11 to the wide footpath passageway inner wall of valve pipe 1 is provided with and leads 11 matched with bar groove 12, leads 11 and 12 cooperations of bar groove of wing and provides rotation restriction for valve plug 3.

Further, the surface of the hollow adjusting head 6 is provided with an external thread matched with the threaded hole 5, one end of the hollow adjusting head 6 is provided with an adjusting opening 13, and the adjusting buckle 13 is distributed in a cross shape, so that the adjusting operation of the hollow adjusting head 6 can be conveniently carried out through a straight-line or cross-shaped screwdriver.

While there have been shown and described what are at present considered the fundamental principles of the utility model, the essential features and advantages thereof, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a pressure release relief valve for gas heater, includes valve pipe (1), its characterized in that, the inner channel of valve pipe (1) is the reducing channel structure of one end thin footpath, the other end wide footpath to be provided with sealed face of toper (2) between thin footpath passageway and the wide footpath passageway, be provided with valve plug (3) in the wide footpath section of valve pipe (1) inner channel to valve pipe (1) wide footpath passageway one end threaded connection has connecting cover (4), the middle part of connecting cover (4) is provided with screw hole (5), and the internal thread of screw hole (5) is connected with hollow adjusting head (6), be provided with spring (7) between the inside of valve pipe (1) and the one side that is located one side of hollow adjusting head (6) and valve plug (3).

2. The pressure relief valve for a gas water heater according to claim 1, characterized in that the conical sealing surface (2) is stepped with two steps, and the front end of the valve plug (3) is provided with an adapter cone (8) that fits the conical sealing surface (2).

3. The pressure relief valve for a gas water heater as claimed in claim 2, wherein the side of the surface of the adapter cone (8) facing away from the spring (7) is provided with a primary sealing pair (9), and the side of the surface of the adapter cone (8) facing away from the spring (7) is provided with a secondary sealing pair (10).

4. A pressure relief valve for a gas water heater according to claim 3, characterized in that the thickness of the primary sealing pair (9) is equal to the height difference of the two-stage conical sealing surface (2), and the thickness of the secondary sealing pair (10) is greater than the thickness of the primary sealing pair (9).

5. The pressure relief safety valve for a gas water heater according to claim 1, characterized in that guide wings (11) are arranged around the valve plug (3), and a strip-shaped groove (12) matched with the guide wings (11) is arranged on the inner wall of the wide-diameter channel of the valve pipe (1).

6. The pressure relief valve for a gas water heater according to claim 1, characterized in that the surface of the hollow adjusting head (6) is provided with an external thread adapted to the threaded hole (5), and one end of the hollow adjusting head (6) is provided with an adjusting port (13).