CN213512257U

CN213512257U - Safety valve

Info

Publication number: CN213512257U
Application number: CN202022253165.3U
Authority: CN
Inventors: 黄玉昌; 区婉玲; 王俊文; 王日森
Original assignee: Guangzhou Zhongqiao Energy Technology Co ltd
Current assignee: Guangzhou Zhongqiao Energy Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-22
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a safety valve, including the connecting tube body that runs through from top to bottom connecting tube body upper portion wall is equipped with the venthole connecting tube body lower part demountable installation has the sealing member, be equipped with the inlet port on the sealing member be equipped with the sealing ring on the sealing member, there are a plurality of logical grooves along the circumference equipartition on the sealing ring, it has the interval to lead to between the bottom face of logical groove the lower part and sealing ring be equipped with the case in the sealing ring, the case can seal the inlet port, connecting tube body upper portion is equipped with the top cap, case and top cap portable connection, the relative top cap of ability reciprocate connecting the tube body outside is provided with the manometer, and overall structure is simple and reasonable, and the leakproofness is good, and the case removes simultaneously and does not have the article and outwards removes.

Description

Safety valve

Technical Field

The utility model relates to a valve member field, in particular to relief valve.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value.

However, the existing safety valve has some defects in structural design. In the prior art, an air inlet is formed in an air inlet end of a valve body of the safety valve, a through hole for a valve rod to pass through is formed in a non-air inlet end of the valve body, when the safety valve is switched to an open state, an end portion of the valve rod can pass through the through hole to move to the outside of the valve body, so that the movement of the valve rod can be interfered by an external object, adverse effects are caused on normal opening of the safety valve, and meanwhile, the structure also provides higher requirements for installation conditions. In addition, the pressure relief channel of the safety valve is not reasonable in design and is not beneficial to rapid pressure relief.

Therefore, it is desirable to provide a safety valve with a reasonable pressure relief channel and good safety to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pressure release passageway is reasonable and the relief valve that the security is good.

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

the utility model provides a safety valve, is including the connecting tube body that runs through from top to bottom the wall of connecting tube body upper portion is equipped with the venthole connecting tube body lower part demountable installation has the sealing member, be equipped with the inlet port on the sealing member be equipped with the sealing ring on the sealing member, there are a plurality of logical grooves along the circumference equipartition on the sealing ring, have the interval between the bottom face that leads to groove and sealing ring be equipped with the case in the sealing ring, the case can seal the inlet port, connecting tube body upper portion is equipped with the top cap, case and top cap movably connected, can reciprocate relatively the top cap connecting tube body outside is provided with the manometer.

Furthermore, the valve core comprises an annular sealing sheet, a guide post is arranged on the annular sealing sheet, an insertion post is arranged on the lower end face of the top cover, the guide post is inserted in the insertion post, and a spring is arranged between the annular sealing sheet and the top cover.

Furthermore, a second sealing part is further arranged on the lower end face of the annular sealing sheet, and the second sealing part is hemispheroid.

Further, the diameter of the second sealing part is equal to that of the air inlet hole.

Further, the top cover and the sealing piece are respectively connected to the connecting pipe body through threads.

Furthermore, a threaded connection part is further arranged on the lower end face of the sealing element.

Furthermore, an annular sealing ring is arranged between the upper end face of the sealing element and the lower end face of the connecting pipe body.

Further, the connecting pipe body outer wall is provided with the caulking groove, the manometer inlays the dress and is in the caulking groove, the manometer back is provided with elastic element, elastic element alternates to the inside upside of threaded connection portion.

Furthermore, the spring is sleeved on the guide post.

Further, the sealing ring is made of rubber.

To sum up, the utility model discloses for its beneficial effect of prior art is:

the utility model discloses a be equipped with the sealing ring and cooperate with connecting the body, the sealing ring can be better with the case cooperation assurance leakproofness, when the pressure release, and is gaseous from the inlet port entering, with the case jack-up that makes progress, the case removes, and atmospheric pressure upwards circulates through logical groove on the sealing ring, then discharges the external world from the venthole, and overall structure is simple and reasonable, and the leakproofness is good, and the case removes simultaneously and does not have the article and outwards removes, guarantees the security.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded sectional view of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is an exploded view of the present invention.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 4, a safety valve comprises a connecting pipe body 1 penetrating vertically, an air outlet 11 is arranged on the wall surface of the upper portion of the connecting pipe body 1, a sealing element 2 is detachably mounted on the lower portion of the connecting pipe body 1, an air inlet 23 is arranged on the sealing element 2, a sealing ring 21 is arranged on the sealing element 2, a plurality of through grooves 22 are uniformly distributed on the sealing ring 21 along the circumference, a space 52 is formed between the lowest portion of each through groove 22 and the bottom end surface of the sealing ring 21, a valve core 4 is arranged in the sealing ring 21, the air inlet 23 can be sealed by the valve core 4, a top cover 3 is arranged on the upper portion of the connecting pipe body 1, the valve core 4 is movably connected with the top cover 3 and can move up and down relative to the top cover 3, a pressure gauge 6 is arranged on the outer side of the connecting pipe body, and the, when the pressure release, gaseous follow the inlet port entering, jack-up the case upwards, the case removes, atmospheric pressure makes progress the circulation through logical groove on the sealing ring, then discharge to the external world from the venthole, overall structure is simple and reasonable, the leakproofness is good, the case removes simultaneously and does not have the article and outwards removes, guarantee the security, intake pipe and outlet duct all are equipped with the screw thread, be convenient for and pipeline threaded connection, it examines surely also to be convenient for dismantle the trachea simultaneously for threaded connection, the manometer of setting on connecting the body enables the user and can watch the pressure condition in the transport trachea in real time, the sensitive unit setting of manometer is on the pipeline of transport trachea.

As shown in fig. 1 to 4, the valve core 4 includes an annular sealing sheet 41, a guide post 43 is disposed on the annular sealing sheet 41, an insertion post 31 is disposed on the lower end surface of the top cover 3, the guide post 43 is inserted into the insertion post 31, a spring 44 is disposed between the annular sealing sheet 41 and the top cover 3, when the air pressure is greater than the pressure borne by the spring, the spring contracts, the annular sealing sheet 41 moves upward, the air pressure circulates upward, then flows upward through the through groove, and is discharged from the air outlet.

In the present invention, the original position of the ring-shaped sealing piece 41 is located in the space 52, and the air inlet can be communicated with the through groove, i.e. to form a seal.

As shown in fig. 1 to 4, a second sealing portion 42 is further disposed on a lower end surface of the annular sealing piece 41, the second sealing portion 42 is shaped like a hemisphere, an original position of the second sealing portion is inserted into the air inlet hole, and the second sealing portion is matched with the air inlet hole to form a seal, so that the sealing performance is further improved, the structure is simple and reasonable, and the use requirement is met.

As shown in fig. 1 to 4, the diameter of the second sealing portion 42 is equal to the diameter of the air inlet 23, so as to ensure the sealing performance, and the structure is simple and reasonable, and meets the use requirement.

As shown in fig. 1 to 4, the top cover 3 and the sealing element 2 are respectively connected to the connecting pipe body 1 through threads, the threads are convenient to install or disassemble, the sealing performance is good, and the connection stability is good.

As shown in fig. 1 to 4, the lower end face of the sealing element 2 is further provided with a threaded connection portion 20, the threaded connection portion is convenient for connection of the valve body and a pipeline, the structure is simple, and the use requirement is met.

As shown in fig. 1 to 4, an annular sealing ring 51 is disposed between the upper end surface of the sealing element 2 and the lower end surface of the connecting pipe body 1, so as to further enhance the sealing effect, prevent air leakage, and meet the use requirement.

As shown in fig. 1 to 4, 1 outer wall of connecting tube is provided with caulking groove 61, manometer 6 inlays the dress in caulking groove 61, manometer 6 back is provided with elastic element 62, elastic element 62 alternates to the inside upside of threaded connection portion 20, and the caulking groove sets up on connecting tube, and inside the caulking groove intercommunication connecting tube, manometer embedding caulking groove internal fixation, the inside manometer of elastic element setting makes manometer ability real time monitoring carry the intraductal pressure of trachea at threaded connection portion, and elastic element detects pressure as the sensitive unit of manometer, is the numerical expression with pressure on the manometer, and convenient to use person observes, and manometer, elastic element are current common technique.

As shown in fig. 1 to 4, the spring 44 is fitted over the guide post 43.

As shown in fig. 1 to 4, the sealing ring 21 is made of rubber.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A safety valve characterized by: comprises a connecting pipe body (1) which is penetrated up and down, the wall surface of the upper part of the connecting pipe body (1) is provided with an air outlet (11), a sealing element (2) is detachably arranged at the lower part of the connecting pipe body (1), an air inlet hole (23) is arranged on the sealing element (2), a sealing ring (21) is arranged on the sealing element (2), a plurality of through grooves (22) are uniformly distributed on the sealing ring (21) along the circumference, a space (52) is arranged between the lowest part of the through groove (22) and the bottom end surface of the sealing ring (21), a valve core (4) is arranged in the sealing ring (21), the valve core (4) can seal the air inlet (23), the pressure-measuring valve is characterized in that a top cover (3) is arranged on the upper portion of the connecting pipe body (1), the valve core (4) and the top cover (3) are movably connected and can move up and down relative to the top cover (3), and a pressure gauge (6) is arranged on the outer side of the connecting pipe body (1).

2. A safety valve according to claim 1, wherein: the valve core (4) comprises an annular sealing sheet (41), a guide column (43) is arranged on the annular sealing sheet (41), an insertion column (31) is arranged on the lower end face of the top cover (3), the guide column (43) is inserted into the insertion column (31), and a spring (44) is arranged between the annular sealing sheet (41) and the top cover (3).

3. A safety valve according to claim 2, wherein: and a second sealing part (42) is further arranged on the lower end face of the annular sealing sheet (41), and the second sealing part (42) is hemispheroid.

4. A safety valve according to claim 3, wherein: the diameter of the second sealing part (42) is equal to that of the air inlet hole (23).

5. A safety valve according to any one of claims 1 to 4, characterized in that: the top cover (3) and the sealing element (2) are respectively connected to the connecting pipe body (1) through threads.

6. A safety valve according to any one of claims 1 to 4, characterized in that: and the lower end face of the sealing element (2) is also provided with a threaded connecting part (20).

7. A safety valve according to any one of claims 1 to 4, characterized in that: an annular sealing ring (51) is arranged between the upper end face of the sealing element (2) and the lower end face of the connecting pipe body (1).

8. A safety valve according to claim 1, wherein: the connecting pipe body (1) outer wall is provided with caulking groove (61), manometer (6) inlay dress is in caulking groove (61), manometer (6) back is provided with elastic element (62), elastic element (62) alternate to the inside upside of threaded connection portion (20).

9. A safety valve according to claim 2, wherein: the spring (44) is sleeved on the guide post (43).

10. A safety valve according to claim 1, wherein: the sealing ring (21) is made of rubber.