CN217130430U

CN217130430U - Safety valve

Info

Publication number: CN217130430U
Application number: CN202220109185.XU
Authority: CN
Inventors: 姜杰; 雷仕铭
Original assignee: Qingdao Yueruide Precision Machinery Manufacturing Co ltd
Current assignee: Qingdao Yueruide Precision Machinery Manufacturing Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-08-05
Anticipated expiration: 2032-01-17

Abstract

The utility model provides a safety valve, which comprises a valve seat and a valve clack, wherein the valve seat comprises a sealing shell, the side surface of the sealing shell is connected with an air outlet channel, the top of the sealing shell is coaxially connected with an installation cylinder, the bottom of the sealing shell is coaxially connected with an air inlet pipe joint, the bottom in the sealing shell is provided with a sealing disc, the edge of the sealing disc is hermetically connected with the inner wall of the sealing shell, the middle part of the top surface of the sealing disc is provided with an annular seat, and the annular seat is communicated with the sealing disc; the valve clack includes the second fixing base at annular seat top, and the top edge connection of second fixing base has a plurality of guide shafts that set up perpendicularly and equidistant range, and the top of guide shaft all runs through the edge that sets up at the positioning disk, is equipped with supporting spring between first fixing base and the second fixing base, and the supporting spring cover is established on valve rod, guide shaft. The utility model discloses when using, supporting spring's pressure can easily be realized through adjusting the nut on the adjusting screw, easy operation, convenient to use.

Description

Safety valve

Technical Field

The utility model belongs to the technical field of the valve, especially indicate a relief valve.

Background

The opening and closing actions of the spring safety valve are realized by the medium pressure change at the inlet end and the pre-tightening force of the spring, so that the valve core is automatically opened and closed. When the medium pressure (internal pressure) rises to a lifting force larger than the pre-tightening force of the spring, the valve core overcomes the pre-tightening force of the spring to automatically open, redundant medium is discharged, the internal pressure is reduced, and due to the action of the spring force, when the internal pressure is reduced to a safety value, the valve core automatically closes, and the discharge stops. Usually, the valve cover needs to be opened in the adjustment of the pressure of the spring safety valve, then the nut at the top of the valve rod is screwed down to adjust, so that the adjusting process is complex, the adjustment can not be carried out immediately, and therefore, the safety valve is provided.

SUMMERY OF THE UTILITY MODEL

For solving the deficiencies of the prior art, the utility model provides a safety valve.

The technical scheme of the utility model is realized like this: a safety valve comprises a valve seat and a valve clack, wherein the valve seat comprises a sealing shell, the side surface of the sealing shell is connected with an air outlet channel, the top of the sealing shell is coaxially connected with an installation cylinder, the bottom of the sealing shell is coaxially connected with an air inlet pipe joint, a sealing disc is arranged at the bottom in the sealing shell, the edge of the sealing disc is in sealing connection with the inner wall of the sealing shell, an annular seat is arranged in the middle of the top surface of the sealing disc, and the annular seat is communicated with the sealing disc;

the valve clack comprises a second fixed seat at the top of the annular seat, the edge of the top of the second fixed seat is connected with a plurality of guide shafts which are vertically arranged and are arranged at equal intervals, the tops of the guide shafts penetrate through the edge of the guide disc, a valve rod is vertically arranged in the center of the top surface of the guide disc, the valve rod is coaxially connected with a first fixed seat, a supporting spring is arranged between the first fixed seat and the second fixed seat, the supporting spring is sleeved on the valve rod and the guide shafts, and two ends of the supporting spring are respectively abutted against the second fixed seat and the second fixed seat; the top of the mounting cylinder is in threaded connection with a sealing end cover, and the top of the valve rod penetrates through the center of the sealing end cover;

the top of the valve rod is connected with a strip-shaped connecting seat, the strip-shaped connecting seat is horizontally arranged, the other end of the strip-shaped connecting seat is provided with an adjusting screw rod, the adjusting screw rod penetrates through the end part of the strip-shaped connecting seat, and the adjusting screw rod is connected with at least one nut; the adjusting screw rod is vertically arranged downwards, and the bottom of the adjusting screw rod is connected to the side face of the sealing shell through the connecting seat.

Preferably, the side of the air inlet pipe joint is connected with a vent pipe, one side of the vent pipe is provided with an exhaust valve, and the tail end of the vent pipe is connected with a gas pressure gauge.

Preferably, the top edge of annular seat is connected with the sealing ring, and the sealing ring contacts for the toper face with the second fixing base, is connected with sealed the pad in the bottom of second fixing base, and sealed the pad is located the sealing ring top.

Preferably, the top of guiding axle all is equipped with the stopper.

Preferably, the bottom of the sealing end cover is coaxially connected with a first sealing ring, the first sealing ring is sleeved on the valve rod, and a sealing ring is arranged between the first sealing ring and the valve rod.

Compared with the prior art, the utility model discloses when using, supporting spring's pressure can be through adjusting the nut on the adjusting screw, can easily realize easy operation, convenient to use.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of a front structure of a safety valve according to the present invention.

Fig. 2 is a schematic view of a back side of a safety valve according to the present invention.

Fig. 3 is a schematic cross-sectional structural view of a safety valve according to the present invention.

In the figure: the gas exhaust valve comprises a sealing shell 1, a gas outlet channel 2, an installation barrel 3, an adjusting screw rod 4, a strip-shaped connecting seat 5, a valve rod 6, a first sealing ring 7, a first fixing seat 8, a supporting spring 9, a guide disc 10, a guide shaft 11, a second fixing seat 12, a sealing ring 13, a vent pipe 14, a gas pressure gauge 15, a gas inlet pipe joint 16, a sealing disc 17, an annular seat 18, a connecting seat 19, a gas exhaust valve 20, a sealing end cover 21 and a sealing gasket 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a safety valve comprises a valve seat and a valve clack, wherein the valve seat comprises a sealing shell 1, the side surface of the sealing shell 1 is connected with an air outlet channel 2, the air outlet channel 2 is used for exhausting air, and threads are arranged in the air outlet channel 2 and are conveniently connected with an external pipeline;

the top of the sealing shell 1 is coaxially connected with the mounting cylinder 3, the bottom of the sealing shell 1 is coaxially connected with the gas inlet pipe joint 16, the bottom in the sealing shell 1 is provided with a sealing disc 17, the edge of the sealing disc 17 is in sealing connection with the inner wall of the sealing shell 1, the middle part of the top surface of the sealing disc 17 is provided with an annular seat 18, the annular seat 18 is communicated with the sealing disc 17, the gas inlet pipe joint 16 is in threaded connection with an object, and internal gas enters the annular seat 18 through the gas inlet pipe joint 16;

the valve clack comprises a second fixed seat 12 at the top of an annular seat 18, the edge of the top of the second fixed seat 12 is connected with a plurality of guide shafts 11 which are vertically arranged and are arranged at equal intervals, the tops of the guide shafts 11 penetrate through the edge of the guide disc 10, a valve rod 6 is vertically installed in the center of the top surface of the guide disc 10, the valve rod 6 is coaxially connected with a first fixed seat 8, a supporting spring 9 is arranged between the first fixed seat 8 and the second fixed seat 12, the supporting spring 9 is sleeved on the valve rod 6 and the guide shafts 11, and two ends of the supporting spring 9 are respectively abutted against the second fixed seat 12 and the second fixed seat 12; the top of the mounting cylinder 3 is in threaded connection with a sealing end cover 21, and the top of the valve rod 6 penetrates through the center of the sealing end cover 21.

As shown in fig. 1, the top of the annular seat 18 is tightly contacted with the bottom of the second fixed seat 12 under the elastic force of the supporting spring 9, the second fixed seat 12 seals the top of the annular seat, and when the valve rod 6 is pressed down, the supporting spring 9 can reciprocate on the guide disc 10 through the guide shaft 11, so that the pressure between the second fixed seat 12 and the annular seat 18 is adjustable.

Further, the side of the air inlet pipe joint 16 is connected with a vent pipe 14, an exhaust valve 20 is installed on one side of the vent pipe 14, the tail end of the vent pipe 14 is connected with a gas pressure gauge 15, if the air pressure inside the device connected with the air inlet pipe joint 16 is all released, the air pressure can be exhausted only by opening the exhaust valve 20, the valve rod 6 is not required to be lifted, and the gas pressure gauge 15 is arranged to conveniently observe the air pressure value inside the air inlet pipe joint 16.

Further, the top edge of the annular seat 18 is connected with a sealing ring 13, the sealing ring 13 and the second fixed seat 12 are in conical surface contact, the bottom of the second fixed seat 12 is connected with a sealing gasket 22, and the sealing gasket 22 is located at the top of the sealing ring 13, so that a better sealing effect is achieved.

Furthermore, the top of the guide shaft 11 is provided with a limiting block to prevent the guide shaft 11 from falling off from the guide disc 10.

Further, the bottom of the sealing end cover 21 is coaxially connected with a first sealing ring 7, the first sealing ring 7 is sleeved on the valve rod 6, and a sealing ring is arranged between the first sealing ring and the valve rod 6, so that the sealing effect between the sealing end cover 21 and the valve rod 6 is better.

Further, the top of the valve rod 6 is connected with a strip-shaped connecting seat 5, the strip-shaped connecting seat 5 is horizontally arranged, an adjusting screw rod 4 is arranged at the other end of the strip-shaped connecting seat 5, the adjusting screw rod 4 penetrates through the end part of the strip-shaped connecting seat 5, and at least one nut is connected to the adjusting screw rod 4; the adjusting screw rod 4 is vertically arranged downwards, and the bottom of the adjusting screw rod 4 is connected to the side surface of the sealing shell 1 through a connecting seat 19.

As shown in fig. 2, the nut at the top of the adjusting screw rod 4 can drive the bar-shaped connecting seat 5 to move downwards, so that the distance between the first fixing seat 8 and the second fixing seat 12 is changed, the pressure of the supporting spring 9 is gradually increased, the pressure relief strength of the valve clack is increased, and the adjustment is convenient.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A safety valve comprises a valve seat and a valve clack, and is characterized in that the valve seat comprises a sealing shell (1), the side surface of the sealing shell (1) is connected with an air outlet channel (2), the top of the sealing shell (1) is coaxially connected with an installation cylinder (3), the bottom of the sealing shell (1) is coaxially connected with an air inlet pipe joint (16), a sealing disc (17) is arranged at the bottom in the sealing shell (1), the edge of the sealing disc (17) is in sealing connection with the inner wall of the sealing shell (1), an annular seat (18) is arranged in the middle of the top surface of the sealing disc (17), and the annular seat (18) is communicated with the sealing disc (17);

the valve clack comprises a second fixing seat (12) at the top of an annular seat (18), the top edge of the second fixing seat (12) is connected with a plurality of vertically arranged guide shafts (11) which are arranged at equal intervals, the tops of the guide shafts (11) penetrate through the edge of a guide disc (10), a valve rod (6) is vertically installed in the center of the top surface of the guide disc (10), the valve rod (6) is coaxially connected with a first fixing seat (8), a supporting spring (9) is arranged between the first fixing seat (8) and the second fixing seat (12), the supporting spring (9) is sleeved on the valve rod (6) and the guide shaft (11), and two ends of the supporting spring (9) are respectively abutted to the second fixing seat (12) and the second fixing seat (12); the top of the mounting cylinder (3) is in threaded connection with a sealing end cover (21), and the top of the valve rod (6) penetrates through the center of the sealing end cover (21);

the top of the valve rod (6) is connected with a strip-shaped connecting seat (5), the strip-shaped connecting seat (5) is horizontally arranged, an adjusting screw (4) is arranged at the other end of the strip-shaped connecting seat (5), the adjusting screw (4) penetrates through the end part of the strip-shaped connecting seat (5), and at least one nut is connected to the adjusting screw (4);

the adjusting screw rod (4) is vertically arranged downwards, and the bottom of the adjusting screw rod (4) is connected to the side face of the sealing shell (1) through a connecting seat (19).

2. The safety valve according to claim 1, characterized in that a vent pipe (14) is connected to the side of the air inlet pipe joint (16), a vent valve (20) is installed on one side of the vent pipe (14), and a gas pressure gauge (15) is connected to the tail end of the vent pipe (14).

3. Safety valve according to claim 1, characterized in that the top edge of the annular seat (18) is connected with a sealing ring (13), the sealing ring (13) is in conical surface contact with the second fixed seat (12), and a sealing gasket (22) is connected to the bottom of the second fixed seat (12), the sealing gasket (22) being located on the top of the sealing ring (13).

4. Safety valve according to claim 1, characterized in that the guide shafts (11) are each provided with a stop at their top.

5. The safety valve according to claim 1, characterized in that a first sealing ring (7) is coaxially connected to the bottom of the sealing end cap (21), the first sealing ring (7) is sleeved on the valve rod (6) and a sealing ring is arranged between the first sealing ring and the valve rod.