CN211875192U

CN211875192U - Non-return protection device of pressure reducing valve

Info

Publication number: CN211875192U
Application number: CN201922470782.6U
Authority: CN
Inventors: 穆宁; 刘剑; 李伟
Original assignee: Chongqing Jieshi Instrument Co ltd
Current assignee: Chongqing Jieshi Instrument Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-06
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a relief pressure valve non return protection device relates to relief pressure valve technical field, which comprises a valve body, the equal fixedly connected with connecting pipe of valve body both sides lateral wall, and the other end fixedly connected with connection pad of connecting pipe, valve body upper end fixedly connected with top cap, and top cap upper end fixedly connected with adapter sleeve, and the adapter sleeve upper end rotates to peg graft and has drive assembly, adapter sleeve and the inside elastic component that is equipped with of top cap. The utility model discloses in, adopt drive assembly, rotate the carousel, drive the threaded rod and rotate, the threaded rod offsets with sealed piece, moves down through spring promotion inserted block like this, seals the work of closing like this with going out the gas cover, realizes the locking work to the carousel through the bolt, realizes the effect of non return.

Description

Non-return protection device of pressure reducing valve

Technical Field

The utility model relates to a relief pressure valve technical field especially relates to a relief pressure valve non return protection device.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure and automatically keeps the outlet pressure stable by the energy of a medium, the pressure reducing valve is a valve which adopts the opening degree of an opening and closing piece in a control valve body to adjust the flow rate of the medium, reduces the pressure of the medium and simultaneously adjusts the opening degree of the opening and closing piece by the action of the pressure behind the valve so as to keep the pressure behind the valve in a certain range.

The condition that a spring is not normally restored can occur due to large gas pressure in the using process of the existing gas pressure reducing valve, so that the pressure reducing valve is damaged, and accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a check protection device of a pressure reducing valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a pressure reducing valve non-return protection device comprises a valve body, wherein connecting pipes are fixedly connected to the side walls of two sides of the valve body, the other ends of the connecting pipes are fixedly connected with a connecting disc, a top cover is fixedly connected to the upper end of the valve body, a connecting sleeve is fixedly connected to the upper end of the top cover, a driving assembly is rotatably inserted into the upper end of the connecting sleeve, and elastic assemblies are arranged inside the connecting sleeve and the top cover;

the elastic component comprises a sealing block which is connected inside the connecting sleeve in a sliding mode, a spring is fixedly connected to the lower end of the sealing block, an inserting block is fixedly connected to the lower end of the spring, a fixing plate is fixedly connected to the inner wall of the valve body, the inserting block is connected inside the fixing plate in a sliding mode, a diaphragm is fixedly connected to the outer portion of the inserting block, and the diaphragm is fixedly connected with the inner wall of the valve body.

Preferably, an air outlet sleeve is arranged in the valve body, two ends of the air outlet sleeve are respectively connected with the inner wall of the valve body through a first connecting plate and a second connecting plate, the inner wall of the valve body is partitioned into an air inlet cavity and an air outlet cavity by the first connecting plate, the air outlet sleeve and the second connecting plate, the air inlet cavity and the air outlet cavity are respectively communicated with connecting pipes corresponding to two sides of the valve body, and the lower end of the insert block is slidably inserted in a counter bore of the air outlet sleeve.

Preferably, drive assembly includes threaded rod and carousel, the upper end threaded connection of threaded rod and adapter sleeve, and the threaded rod lower extreme offsets with sealed piece, the threaded rod upper end extend to the adapter sleeve outside and with carousel fixed connection.

Preferably, three centrosymmetric openings are formed in the rotary table, a plurality of bolts are connected to the rotary table in a threaded manner, an annular disc is sleeved on the connecting sleeve, and the lower ends of the bolts are abutted to the annular disc of the connecting sleeve.

Preferably, the cross-section of the insert block is rectangular, and the insert block, the fixed plate and the air outlet sleeve are in clearance fit.

Advantageous effects

1. The utility model discloses in, adopt drive assembly, rotate the carousel, drive the threaded rod and rotate, the threaded rod offsets with sealed piece, promotes the inserted block through the spring like this and moves down, offsets the counter bore of inserted block and play gas cover like this and realizes sealing, carries out the locking work to the carousel now through the bolt, realizes the effect of non return.

2. The utility model discloses in, adopt connecting pipe and connection pad, realized the effect to the connection of outside gas pipe like this, easy to assemble.

Drawings

Fig. 1 is a front three-dimensional structure diagram of a check protection device of a pressure reducing valve provided by the utility model;

FIG. 2 is a front structural view of a check protection device of a pressure reducing valve according to the present invention;

fig. 3 is a top view structural diagram of a check protection device of a pressure reducing valve according to the present invention.

Illustration of the drawings:

1. a valve body; 2. a connecting pipe; 3. a connecting disc; 4. a top cover; 5. connecting sleeves; 6. a drive assembly; 61. a threaded rod; 62. a turntable; 7. a bolt; 8. an elastic component; 81. a sealing block; 82. a spring; 83. a membrane; 84. inserting a block; 9. a fixing plate; 10. an air outlet sleeve; 101. a first connecting plate; 102. a second connecting plate; 103. an air inlet cavity; 104. an air outlet cavity; 105. an annular disc.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Referring to fig. 1-3, a non-return protection device for a pressure reducing valve comprises a valve body 1, wherein the side walls of two sides of the valve body 1 are fixedly connected with a connecting pipe 2, the other end of the connecting pipe 2 is fixedly connected with a connecting plate 3, the upper end of the valve body 1 is fixedly connected with a top cover 4, the upper end of the top cover 4 is fixedly connected with a connecting sleeve 5, and the upper end of the connecting sleeve 5 is rotatably inserted with a driving component 6.

The driving component 6 comprises a threaded rod 61 and a rotary table 62, the threaded rod 61 is in threaded connection with the upper end of the connecting sleeve 5, the lower end of the threaded rod 61 abuts against the sealing block 81, and the upper end of the threaded rod 61 extends to the outside of the connecting sleeve 5 and is fixedly connected with the rotary table 62. Three centrosymmetric openings are formed in the rotary disc 62, a plurality of bolts 7 are connected to the rotary disc 62 in a threaded manner, the connecting sleeve 5 is provided with an annular disc 105, and the lower ends of the bolts 7 are abutted to the annular disc 105 of the connecting sleeve 5. The gas is introduced through the connection plate 3 and the connection pipe 2 at one end, and then discharged through the connection pipe 2 and the connection plate 3 at the other end.

The connecting sleeve 5 and the top cover 4 are internally provided with an elastic component 8, the elastic component 8 comprises a sealing block 81 which is connected to the inside of the connecting sleeve 5 in a sliding manner, a spring 82 is fixedly connected to the lower end of the sealing block 81, an inserting block 84 is fixedly connected to the lower end of the spring 82, a fixing plate 9 is fixedly connected to the inner wall of the valve body 1, the inserting block 84 is connected to the inside of the fixing plate 9 in a sliding manner, a diaphragm 83 is fixedly connected to the outside of the inserting block 84, and the diaphragm 83 is fixedly. Be equipped with out gas cover 10 in the valve body 1, the both ends of going out gas cover 10 are connected with valve body 1 inner wall through first connecting plate 101 and second connecting plate 102 respectively, and first connecting plate 101, the cover 10 and the second connecting plate 102 of giving vent to anger separate the inner wall of valve body 1 for admit air chamber 103 and play gas chamber 104, admit air chamber 103 and go out gas chamber 104 and communicate with the connecting pipe 2 that the valve body 1 both sides correspond respectively, and the lower extreme of inserted block 84 slides and pegs graft in the counter bore of the cover 10 that gives vent to anger.

The section of the insertion block 84 is rectangular, and the insertion block 84, the fixing plate 9 and the air outlet sleeve 10 are in clearance fit. Realize the locking work to carousel 62 through bolt 7, realize the effect of non return, gaseous pressure is big like this, and gas flow velocity is slow, then reversal carousel 62, drive threaded rod 61 antiport, make spring 82 resume original position like this, and the diaphragm 83 receives the pressure of air inlet direction for inserted block 84 shifts up under the diaphragm 83 drives, then realized giving vent to anger the opening of cover 10 like this, realized the release of gas flow like this, more that gas flow releases, and gas pressure drop is low.

The utility model discloses a theory of operation: the gas is introduced through the connecting disc 3 and the connecting tube 2 at one end, and then is discharged through the connecting tube 2 and the connecting disc 3 at the other end, the threaded rod 61 is driven to rotate by rotating the turntable 62, the threaded rod 61 abuts against the sealing block 81, the inserting block 84 is pushed to move downwards through the spring 82, the inserting block 84 abuts against the counter bore of the gas outlet sleeve 10 to realize sealing, and the work of closing the gas inlet and outlet channel is realized; the locking work of the rotary table 62 is realized through the bolt 7, and the non-return function is realized, so that the gas pressure is high, and the gas flow speed is low; then the rotating disc 62 is reversed to drive the threaded rod 61 to rotate reversely, so that the spring 82 restores the original position, and then the opening of the air outlet sleeve 10 is realized, so that the release of the air flow is realized, the air release is more, and the air pressure drop is low.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, a first feature being "on," "above," and "over" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a gas level that is higher than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature has a smaller gas level than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a relief pressure valve non return protection device, includes valve body (1), its characterized in that: the connecting pipe (2) is fixedly connected to the side walls of the two sides of the valve body (1), the connecting disc (3) is fixedly connected to the other end of the connecting pipe (2), the top cover (4) is fixedly connected to the upper end of the valve body (1), the connecting sleeve (5) is fixedly connected to the upper end of the top cover (4), the driving assembly (6) is rotatably inserted into the upper end of the connecting sleeve (5), and the elastic assembly (8) is arranged inside the connecting sleeve (5) and the top cover (4);

elastic component (8) include sliding connection at inside sealed piece (81) of adapter sleeve (5), and sealed piece (81) lower extreme fixedly connected with spring (82), and spring (82) lower extreme fixedly connected with inserted block (84), valve body (1) inner wall fixedly connected with fixed plate (9), inserted block (84) sliding connection is inside fixed plate (9), inserted block (84) outside fixedly connected with diaphragm (83), and diaphragm (83) and valve body (1) inner wall fixed connection.

2. A pressure relief valve check protection device as claimed in claim 1, wherein: be equipped with air outlet sleeve (10) in valve body (1), the both ends of air outlet sleeve (10) are respectively through first connecting plate (101) and second connecting plate (102) and valve body (1) inner wall connection, and first connecting plate (101), air outlet sleeve (10) and second connecting plate (102) cut off the inner wall of valve body (1) for admit air chamber (103) and go out gas chamber (104), admit air chamber (103) and go out gas chamber (104) and communicate with connecting pipe (2) that valve body (1) both sides correspond respectively, inserted block (84) lower extreme slides and pegs graft in the counter bore of air outlet sleeve (10).

3. A pressure relief valve check protection device as claimed in claim 1, wherein: drive assembly (6) include threaded rod (61) and carousel (62), threaded rod (61) and the upper end threaded connection of adapter sleeve (5), and threaded rod (61) lower extreme offsets with sealed piece (81), threaded rod (61) upper end extend to adapter sleeve (5) outside and with carousel (62) fixed connection.

4. A pressure relief valve check protection device as claimed in claim 3, wherein: the opening that sets up three central symmetry is seted up on carousel (62), threaded connection has a plurality of bolts (7) on carousel (62), and adapter sleeve (5) are equipped with annular disc (105), and bolt (7) lower extreme offsets with annular disc (105) of adapter sleeve (5).

5. A pressure relief valve check protection device as claimed in claim 1, wherein: the cross section of the insert block (84) is rectangular, and the insert block (84) is in clearance fit with the fixing plate (9) and the air outlet sleeve (10).