CN218523085U

CN218523085U - Safety valve with anti-shake and mute functions

Info

Publication number: CN218523085U
Application number: CN202222262498.1U
Authority: CN
Inventors: 黄章建
Original assignee: Zhuhai Edison Ecotech Corp
Current assignee: Zhuhai Edison Ecotech Corp
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-02-24
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a relief valve with anti-shake silence function, include: a water inlet and a water outlet valve body are arranged, and a control cavity is formed between the water inlet and the water outlet; the valve seat is arranged in the control cavity and is fixedly connected with the valve body; a movable seal assembly, comprising: the lifting rod is arranged above the valve body and is in sliding connection with the valve body; the lower spring limiting part is arranged in the control cavity and is detachably connected with the bottom of the lifting rod; the pressing piece is arranged in the control cavity, the top of the pressing piece is detachably connected with the lower spring limiting piece, the pressing piece is sleeved with a sealing gasket and a pressing cap with an opening facing the valve seat, the sealing gasket is positioned in the pressing cap and is tightly attached to the top wall of the pressing cap, the side wall of the pressing cap corresponding to the water outlet is provided with adjusting holes which are equal to the sealing gasket in height and are not attached to the sealing gasket, the sealing gasket is matched with the valve seat to be opened and closed to be connected to achieve blocking between the water inlet and the water outlet, the pressing piece is provided with a pressing ring on the periphery, and the sealing gasket and the top wall of the pressing cap are clamped between the pressing ring and the lower spring limiting piece. The utility model discloses anti-shake silence is effectual.

Description

Safety valve with anti-shake and mute functions

Technical Field

The utility model relates to a relief valve technical field, concretely relates to relief valve with anti-shake silence function.

Background

With the gradual improvement of living standard of residents all over the world, hot water is used more and more frequently, occasions are more and more, and the requirement is higher and higher, and in order to supply hot water, heating devices such as boilers, electric water heaters, air energy water heaters and the like of various types are produced at the same time. In recent years, boilers and water heaters in the market cannot meet the requirements of large-scale places, and meanwhile, safety accidents frequently occur, which seriously threatens the personal safety and property safety of users, so that the state has developed a quality control policy specially aiming at the boilers and the water heaters, and requires that reliable temperature and pressure release devices must be installed on the boilers and the water heaters to avoid the damage or explosion of the boilers or the water heaters under high temperature and high pressure. However, temperature and pressure relief valves installed in boiler systems at home and abroad are generally small in specification and small in discharge capacity, and are generally suitable for heating systems of families, when large-scale places such as enterprises, hospitals and schools use large-scale boiler systems, large-discharge-capacity relief valves are needed to effectively protect the systems, and although large-scale temperature and pressure relief valves are arranged on the market, a large amount of water vapor erodes valve core components due to excessive discharge gas discharge, so that the valve core components are shaken, and noise and even falling are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a relief valve with anti-shake silence function, it is through corresponding sealed pad department setting and sealed the pad and stay gapped regulation hole between on pressing the cap lateral wall to partial steam accessible regulation hole discharges to the delivery port when making the pressure release, the discharge of gas when reaching and avoiding the pressure release is too big to sealed the pad recoil, and takes place the purpose of shake and the noise that the shake brought.

The utility model provides a relief valve with anti-shake silence function, include:

the valve body is provided with a water inlet and a water outlet, and a control cavity is formed between the water inlet and the water outlet;

the valve seat is arranged in the control cavity and is fixedly connected with the valve body;

a movable seal assembly, comprising:

the pressure relief lifting rod is arranged above the valve body and is in sliding connection with the valve body;

the lower spring limiting part is arranged in the control cavity and is detachably connected with the bottom of the lifting rod;

the pressing piece is arranged in the control cavity, the top of the pressing piece is detachably connected with the lower spring limiting piece, a sealing gasket and a pressing cap with an opening facing the valve seat are sleeved on the pressing piece, the sealing gasket is located in the pressing cap and is tightly attached to the top wall of the pressing cap, an exhaust adjusting hole is formed in the side wall of the pressing cap corresponding to the water outlet, the adjusting hole is equal to the sealing gasket in height, a gap is reserved between the adjusting hole and the sealing gasket, the sealing gasket is matched with the valve seat to be connected in an opening-closing mode to achieve the blockage between the water inlet and the water outlet, a pressing ring is arranged around the periphery of the pressing piece, and the sealing gasket and the top wall of the pressing cap are clamped between the pressing ring and the lower spring limiting piece.

Preferably, in the safety valve with an anti-shake and silencing function, the movable sealing assembly further includes:

the upper spring limiting piece is movably sleeved on the lifting rod and is detachably connected with the valve body;

and the spring is sleeved on the lifting rod in the valve body and clamped between the upper spring limiting part and the lower spring limiting part.

Preferably, in the safety valve with the anti-shake and mute functions, a flexible sealing sleeve is sleeved on the pressing piece, the inner edge of the sealing sleeve is located between the lower spring limiting piece and the pressing cap, and the outer edge of the sealing sleeve extends to the side wall of the valve body and is detachably connected with the valve body.

Preferably, in the safety valve with an anti-shake and silencing function, the valve body includes:

a valve body provided with the water inlet and the water outlet;

the bottom of the valve cover is detachably connected with the valve main body, the top of the valve cover is detachably connected with the upper spring limiting part positioned in the valve main body, and the outer edge of the sealing sleeve is clamped between the valve cover and the valve main body.

Preferably, in the safety valve with an anti-shake and silencing function, the upper spring stopper includes:

the adjusting block is movably sleeved on the lifting rod and is in threaded connection with the valve cover;

and the upper limiting seat is movably sleeved on the lifting rod and clamped between the spring and the adjusting block.

Preferably, in the safety valve with the anti-shake and mute functions, a connecting hole is formed in the top of the valve cover, the adjusting block is arranged at the connecting hole, a cover plate is arranged on the valve cover corresponding to the connecting hole, and the top of the lifting rod penetrates through the cover plate in a moving mode and is pivoted with the lifting handle.

Preferably, in the safety valve having an anti-shake and silencing function, a gasket is provided between the lid plate and the pull-up handle.

Preferably, in the safety valve with an anti-shake and silencing function, the bottom of the valve cap is connected with the valve main body through a threaded structure.

Preferably, in the safety valve with an anti-shake and silencing function, the lower spring stopper includes:

the top of the pressing piece is inserted into the nut and is in threaded connection with the nut, and a limit ring is arranged on the lifting rod in the nut in a surrounding manner;

the bottom of the lower limiting seat is positioned between the screw cap and the sealing sleeve, the top of the lower limiting seat extends towards the compression direction of the spring and is opposite to the step wall in the valve cover, and the spring is positioned between the lower limiting seat and the upper limiting seat.

Preferably, in the safety valve with the anti-shake and mute function, a heat sensitive element slidably connected with the valve body is arranged at a water inlet of the valve body, one end of the heat sensitive element is inserted into the boiler, and the other end of the heat sensitive element is arranged close to the bottom of the pressing piece.

The utility model discloses at least, include following beneficial effect: the utility model discloses anti-shake silence is effectual, long service life.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a cross-sectional view of a safety valve with an anti-shake and silencing function according to one embodiment of the present invention;

fig. 2 is a schematic structural view of a pressure relief state of a safety valve with an anti-shake and mute function according to one of the technical solutions of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

the pressure relief valve comprises a lifting handle 1, a lifting rod 2, a rivet 3, a gasket 4, a cover plate 5, an adjusting block 6, a valve cover 7, an upper limiting seat 8, a spring 9, a nut 10, a lower limiting seat 11, a sealing sleeve 12, a sealing gasket 13, a water outlet 14, an adjusting hole 15, a pressing cap 16, a pressing piece 17, a valve body 18, a thermal sensitive element 19, a water inlet 20, a valve seat 21, a pressing ring 22 and a step wall 23, wherein an arrow in the figure 2 indicates the flow direction of water vapor during pressure relief.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

As shown in fig. 1, 2, and 3, the present application provides a safety valve with an anti-shake and silencing function, including:

the valve comprises a valve body, a valve body and a valve body, wherein a water inlet 20 and a water outlet 14 are arranged on the valve body, and a control cavity is formed between the water inlet 20 and the water outlet 14;

the valve seat 21 is arranged in the control cavity and is fixedly connected with the valve body;

a movable seal assembly, comprising:

the lifting rod 2 is used for relieving pressure, is arranged above the valve body and is in sliding connection with the valve body;

the lower spring limiting part is arranged in the control cavity and is detachably connected with the bottom of the lifting rod 2;

the pressing piece 17 is arranged in the control cavity, the top of the pressing piece is detachably connected with the lower spring limiting piece, a sealing gasket 13 and a pressing cap 16 with an opening facing the valve seat 21 are sleeved on the pressing piece 17, the sealing gasket 13 is located in the pressing cap 16 and is tightly attached to the top wall of the pressing cap 16, an exhaust adjusting hole 15 is formed in the side wall, corresponding to the water outlet 14, of the pressing cap 16, the adjusting hole 15 is equal to the sealing gasket 13 in height, a gap is reserved between the adjusting hole 15 and the sealing gasket 13, the sealing gasket 13 is matched with the valve seat 21 to be connected in an opening-closing mode to achieve blocking between the water inlet 20 and the water outlet 14, a pressing ring 22 is arranged on the periphery of the pressing piece 17, and the sealing gasket 13 and the top wall of the pressing cap 16 are clamped between the pressing ring 22 and the lower spring limiting piece.

The safety valve with the anti-shake and mute functions provided by the technical scheme mainly comprises a valve body, a valve seat 21 and a movable sealing assembly, wherein the valve body is provided with a water inlet 20 and a water outlet 14, a control cavity is formed between the water outlet 14 and the water inlet 20, the valve seat 21 is fixedly connected with the valve body and can be integrally formed or welded, the movable sealing assembly is matched with the valve seat 21 to be opened and closed, so that a passage between the water inlet 20 and the water outlet 14 is communicated or blocked to release or stop releasing pressure, the passage is communicated and released when the movable sealing assembly is matched with the valve seat 21 to be opened, and the passage is blocked and the releasing pressure is finished when the movable sealing assembly is matched with the valve seat 21 to be closed; the movable sealing component comprises a lifting rod 2, a lower spring limiting piece and a pressing piece 17, wherein the lifting rod 2 is arranged above the valve body and is in sliding connection with the valve body and can be used for manually moving the movable sealing component to be matched with a valve seat 21 for opening and closing connection so as to realize pressure relief and stop pressure relief, the lower spring limiting piece is arranged in a control cavity and is detachably connected with the bottom of the lifting rod 2, the lifting rod 2 can drive the lower spring limiting piece to move, the top of the pressing piece 17 is detachably connected with the lower spring limiting piece, the pressing piece 17 is arranged in the control cavity, a sealing gasket 13 and a pressing cap 16 are sleeved on the pressing piece 17, the sealing gasket 13 can be a rubber gasket, the sealing gasket 13 is arranged in the pressing cap 16 and is clung to the top wall of the pressing cap 16 to play a sealing role, an opening of the pressure cap 16 faces the valve seat 21 so as to be buckled on the valve seat 21 to enable the sealing gasket 13 to be in matched opening and closing connection with the valve seat 21, and a passage between the water inlet 20 and the water outlet 14 is communicated or blocked, a pressure ring 22 is arranged on the periphery of the pressure piece 17, the sealing gasket 13 and the top wall of the pressure cap 16 are clamped between the pressure ring 22 and a lower spring limiting piece so as to limit the positions of the pressure cap 16 and the sealing gasket 13 and prevent separation and falling, the lower spring limiting piece moves to drive the pressure piece 17 to move, and further drive the pressure cap 16 and the sealing gasket 13 to move to be in matched opening and closing connection with the valve seat 21 so as to remove or keep the passage blocking between the water inlet 20 and the water outlet 14, and realize the functions of pressure relief and pressure relief stopping; the side wall of the pressure cap 16 corresponding to the water outlet 14 is provided with an adjusting hole 15, the adjusting hole 15 and the sealing gasket 13 are equal in height, and a gap of 0.01-0.2 mm is reserved between the adjusting hole 15 and the sealing gasket 13, so that the sealing gasket 13 is prevented from blocking the adjusting hole 15, when the passage is opened for pressure relief, part of water vapor can be discharged to the water outlet 14 through the adjusting hole 15, and therefore when the air displacement is too large during pressure relief, the water vapor recoils the sealing gasket 13 along the inner wall of the pressure cap 16, so that the sealing gasket 13 is separated from the top wall of the pressure cap 16, and the noise caused by shaking and vibration is avoided.

The safety valve working process with the anti-shake and mute functions of the technical scheme is as follows: when pressure relief is needed, the lifting rod 2 moves towards the opposite direction of the valve seat 21 and drives the lower spring limiting piece, the pressing piece 17, the pressing cap 16 and the sealing gasket 13 to move, so that the sealing positions of the pressing cap 16 and the sealing gasket 13 and the valve seat 21 are opened, the water inlet 20 and the water outlet 14 of the valve body are communicated, and water vapor flows into the control cavity from the water inlet 20 and flows to the water outlet 14 through a gap between the pressing cap 16 and the valve seat 21 and the adjusting hole 15 on the pressing cap 16 to relieve pressure; after the pressure relief is completed, the lifting rod 2 moves towards the valve seat 21 and drives the lower spring limiting part, the pressing part 17, the pressing cap 16 and the sealing gasket 13 to move, so that the sealing positions of the pressing cap 16, the sealing gasket 13 and the valve seat 21 are sealed and closed, namely a passage between the water inlet 20 and the water outlet 14 of the valve body is sealed and closed.

The technical scheme at least comprises the following beneficial effects: the valve seat 21 is fixedly connected with the valve body and used for supporting the movable sealing assembly; the lower spring limiting piece is detachably connected with the lifting rod 2, and the pressing piece 17 is detachably connected with the lower spring limiting piece, so that the structure is convenient to disassemble and assemble; the opening of the pressure cap 16 faces the valve seat 21 so as to be buckled on the valve seat 21 to enable the sealing gasket 13 to be matched with the valve seat 21 for opening and closing connection, and the communication or the blocking of a passage between the water inlet 20 and the water outlet 14 is realized; a compression ring 22 is arranged on the periphery of the compression piece 17, and the sealing gasket 13 and the top wall of the compression cap 16 are clamped between the compression ring 22 and the lower spring limiting piece so as to limit the positions of the compression cap 16 and the sealing gasket 13 and prevent the compression cap and the sealing gasket 13 from separating and falling off; be provided with regulation hole 15 on the lateral wall of the pressure cap 16 that corresponds delivery port 14, so that during the pressure release partial steam accessible regulation hole 15 discharges to delivery port 14, when the displacement was too big during can avoiding the pressure release, steam recoils sealed pad 13 along pressing the 16 inner walls of cap, and make sealed pad 13 with press the separation of cap 16 roof, the noise that the shake and shake brought takes place, and the steam that flows to regulation hole 15 can be to sealed pad 13 and erode around, can effectively avoid part scale deposit to influence sealed effect, thereby improve product life.

In another technical solution, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, the movable sealing assembly further includes:

the upper spring limiting piece is movably sleeved on the lifting rod 2 and is detachably connected with the valve body;

and the spring 9 is sleeved on the lifting rod 2 in the valve body and clamped between the upper spring limiting part and the lower spring limiting part.

The lifting rod 2 can drive the lower spring limiting piece to move, the distance between the upper spring limiting piece and the lower spring limiting piece can be changed, the spring 9 can be further stretched, the pressure on the lower spring limiting piece is changed, and the minimum pressure for separating the pressure cap 16 from the valve seat 21 is indirectly changed; after the pressure relief is finished, the elastic force generated when the spring 9 is compressed can indirectly assist the reset of the pressure cap 16 to be connected with the valve seat 21, and a passage between the water inlet 20 and the water outlet 14 is blocked.

In another technical solution, as shown in fig. 1, in the safety valve with an anti-shake and mute function, a flexible sealing sleeve 12 is sleeved on the pressing member 17, an inner edge of the sealing sleeve 12 is located between the lower spring limiting member and the pressing cap 16, and an outer edge of the sealing sleeve 12 extends to a side wall of the valve body and is detachably connected with the valve body. The sealing sleeve 12 can be a rubber sleeve, and the sealing sleeve 12 is used for protecting the erosion of water vapor to the lower spring limiting part, the spring 9, the upper spring limiting part, the lifting rod 2 and the like during pressure relief, so that the service life of the safety valve is prolonged.

In another aspect, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, the valve body includes:

a valve body 18 provided with said water inlet 20 and said water outlet 14;

the bottom of the valve cover 7 is detachably connected with the valve main body 18, the top of the valve cover 7 is detachably connected with the upper spring limiting part positioned in the valve cover, and the outer edge of the sealing sleeve 12 is clamped between the valve cover 7 and the valve main body 18. The valve body is mainly divided into a valve main body 18 and a valve cover 7 which are detachably connected, so that the parts in the valve body can be conveniently dismounted and maintained; the outer edge of the sealing sleeve 12 is clamped between the valve cover 7 and the valve main body 18, so that the sealing sleeve 12 is convenient to assemble and disassemble.

In another aspect, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, the upper spring limiting member includes:

the adjusting block 6 is movably sleeved on the lifting rod 2 and is in threaded connection with the valve cover 7;

and the upper limiting seat 8 is movably sleeved on the lifting rod 2 and clamped between the spring 9 and the adjusting block 6. The distance between the adjusting block 6 and the lower spring limiting part can be adjusted by rotating the adjusting block 6, so that the distance between the upper limiting seat 8 and the lower spring limiting part is adjusted, the telescopic state of the spring 9 is changed, the pressure of the spring 9 on the lower spring limiting part is changed, the minimum pressure for separating the pressure cap 16 from the valve seat 21 is indirectly changed, and the purpose of pressure adjustment is achieved.

In another technical solution, as shown in fig. 1, in the safety valve with anti-shake and anti-mute functions, a connection hole is formed in the top of the valve cover 7, the adjustment block 6 is arranged at the connection hole, a cover plate 5 is arranged on the valve cover 7 corresponding to the connection hole, and the top of the lifting rod 2 movably penetrates through the cover plate 5 and is pivoted with the lifting handle 1. The lifting rod 2 and the lifting handle 1 can be connected through a rivet 3; taking the pivot point of the cover plate 5 and the lifting handle 1 as a center, rotating the lifting handle 1 to enable one end of the lifting handle 1 to be abutted against the cover plate 5, and then pulling the lifting handle 2 to drive the pressure cap 16 and the sealing gasket 13 to move relative to the valve seat 21 to separate for pressure relief; product information such as LOGO, pressure, temperature, date, etc. may be identified on the cover plate 5.

In another technical solution, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, a gasket 4 is disposed between the cover plate 5 and the pull-up handle 1. The pad 4 is used for providing a supporting force when the lifting handle 1 rotates the lifting handle 2 and protecting the cover plate 5.

In another technical solution, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, the bottom of the valve cap 7 is connected with the valve main body 18 through a threaded structure. The disassembly and the assembly are convenient.

In another aspect, as shown in fig. 1, in the safety valve with an anti-shake and silencing function, the lower spring stopper includes:

the nut 10 is sleeved on the lifting rod 2, the top of the pressing piece 17 is inserted into the nut 10 and is in threaded connection with the nut 10, and a limit ring is arranged on the upper periphery of the lifting rod 2 in the nut 10;

the bottom of the lower limiting seat 11 is located between the screw cap 10 and the sealing sleeve 12, the top of the lower limiting seat extends towards the compression direction of the spring 9 and is opposite to the step wall 23 in the valve cover 7, and the spring 9 is located between the lower limiting seat 11 and the upper limiting seat 8. The limiting ring is used for preventing the lifting rod 2 from being separated from the nut 10; the top of the pressing piece 17 locks and limits the nut 10 and the lifting rod 2, and the nut 10 and the pressing ring 22 lock and limit the lower limiting seat 11, the sealing sleeve 12, the pressing cap 16 and the sealing gasket 13; the top of the lower limiting seat 11 is opposite to the step wall 23 to limit the moving stroke of the lifting rod 2 and the compression degree of the spring 9, and avoid the damage to each part caused by overlarge reaction force of the spring 9 due to overlarge compression elasticity because the moving stroke of the lifting rod 2 is overlong.

In another technical solution, as shown in fig. 1, in the safety valve with the anti-shake and anti-mute function, a heat sensitive element 19 slidably connected to the valve body is disposed at a water inlet 20 of the valve body, and one end of the heat sensitive element 19 is inserted into the boiler, and the other end is disposed near the bottom of the pressing member 17. The thermosensitive element 19 can be a temperature sensing rod, when the temperature in the boiler reaches a preset value, paraffin in the temperature sensing rod expands with heat and contracts with cold, the ejector rod in the temperature sensing rod is pushed outwards, namely the direction of the pressing piece 17 moves, or the ejector rod is pushed back to the original position under the action of a spring in the temperature sensing rod, so that the position of the pressing piece 17 is changed, the relative positions of the pressing cap 16, the sealing gasket 13 and the valve seat 21 are changed, and the purposes of pressure relief and pressure relief stopping are achieved.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims

1. Relief valve with anti-shake silence function, its characterized in that includes:

a movable seal assembly, comprising:

2. The safety valve with an anti-shake muting function according to claim 1, wherein the movable seal assembly further comprises:

3. The safety valve with anti-shake and silencing functions as claimed in claim 2, wherein a flexible sealing sleeve is sleeved on the pressing member, an inner edge of the sealing sleeve is located between the lower spring limiting member and the pressing cap, and an outer edge of the sealing sleeve extends to the side wall of the valve body and is detachably connected with the valve body.

4. The safety valve with an anti-shake mute function as claimed in claim 3, wherein the valve body comprises:

a valve body provided with the water inlet and the water outlet;

the bottom of the valve cover is detachably connected with the valve main body, the top of the valve cover is detachably connected with the upper spring limiting part positioned in the valve cover, and the outer edge of the sealing sleeve is clamped between the valve cover and the valve main body.

5. The safety valve with an anti-shake mute function as claimed in claim 4, wherein the upper spring limit stopper comprises:

6. The safety valve with anti-shake and silencing functions as claimed in claim 5, wherein the top of the valve cap is provided with a connecting hole, the adjusting block is arranged at the connecting hole, the valve cap is provided with a cover plate corresponding to the connecting hole, and the top of the lifting rod moves through the cover plate and is pivoted with a lifting handle.

7. The safety valve with an anti-shake and silencing function as claimed in claim 6, wherein a gasket is provided between the cover plate and the pull-up handle.

8. The safety valve with an anti-shake mute function as claimed in claim 4, wherein the cap bottom is connected to the valve main body by a screw structure.

9. The safety valve with an anti-shake mute function as claimed in claim 5, wherein the lower spring limit piece comprises:

10. The safety valve with anti-shake and silencing functions as claimed in claim 1, wherein a heat sensitive element is slidably connected to the valve body at the water inlet of the valve body, one end of the heat sensitive element is inserted into the boiler, and the other end of the heat sensitive element is arranged near the bottom of the pressing member.