CN218845231U

CN218845231U - Fire-retardant breather valve with negative pressure protection function

Info

Publication number: CN218845231U
Application number: CN202223021324.2U
Authority: CN
Inventors: 朱威; 赵德政; 左世国
Original assignee: HONGHU LANTIAN ANHUAN ENERGY SAVING EQUIPMENT CO Ltd
Current assignee: HONGHU LANTIAN ANHUAN ENERGY SAVING EQUIPMENT CO Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-04-11
Anticipated expiration: 2032-11-10

Abstract

The utility model provides a back-fire relief breather valve with negative pressure protect function relates to back-fire relief breather valve technical field, including the breather valve main part, the bottom surface of breather valve main part is provided with connection pad on the spark arrester, the bottom surface of connection pad is provided with connection pad under the spark arrester on the spark arrester, one side of breather valve main part is provided with exhaust duct, the opposite side of breather valve main part is provided with the admission line, the adoption is provided with the sealing washer respectively with the sealed lid of exhaust and between the sealed lid that admits air at the top surface of gas outlet and air inlet, and the cross-section of sealing washer is the corrugate, the corrugated sealing washer can shrink when receiving pressure, can kick-back when not having pressure, can make the sealing washer seal gas outlet and air inlet respectively when sealed lid that admits air pushes down the sealing washer, prevent the inside phenomenon of disappointing and admitting air of breather valve main part, can maintain the stability of the inside material of storage tank under the normal conditions.

Description

Fire-retardant breather valve with negative pressure protection function

Technical Field

The utility model relates to a back-fire relief breather valve technical field especially relates to a back-fire relief breather valve with negative pressure protect function.

Background

The working principle of the fire-retardant breather valve is that a spring limiting valve plate is used, positive pressure and negative pressure determine or breathe or inhale, the breather valve has functions of positive pressure relief and negative pressure, specifically, when a container bears positive pressure, the breather valve opens exhaled gas to release positive pressure, when the container bears negative pressure, the fire-retardant breather valve opens inhaled gas to release negative pressure, therefore, the pressure is in a certain range, the safety of the container is ensured, one is to breathe or inhale when reaching certain pressure, the other is to be designed to be pure exhale but not inhale, the fire-retardant breather valve can be replaced by a one-way valve with two proper pressures, the fire-retardant breather valve can not only maintain the air pressure balance of the storage tank, ensure that the storage tank is not damaged when being in overpressure or vacuum, and can reduce media and loss in the tank.

The existing fire-retardant breather valve has the following problems when in use:

the pressure of breather valve only leans on the weight control of malleation valve clack and negative pressure valve clack, and the leakproofness between malleation valve clack and the negative pressure valve clack and the back-fire relief breather valve body is relatively poor, and the inside pressure release or the pressurized condition appear easily that lead to the storage tank in the air gets into the storage tank easily, influences the stability of material.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of poor air tightness under the fire relief breather valve normal state among the prior art, and the fire relief breather valve with negative pressure protect function who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a back-fire relief breather valve with negative pressure protect function, includes the breather valve main part, the bottom surface of breather valve main part is provided with connection pad on the spark arrester, the bottom surface of connection pad is provided with connection pad under the spark arrester on the spark arrester, one side of breather valve main part is provided with exhaust duct, the opposite side of breather valve main part is provided with the admission line, be provided with fire retardant disk under connection pad and the spark arrester between the connection pad on the spark arrester, the top surface of breather valve main part and admission line is provided with exhaust sleeve and air inlet sleeve respectively, exhaust sleeve and air inlet sleeve's inside is provided with the exhaust movable rod respectively and admits air the movable rod, the outside of exhaust movable rod and the movable rod that admits air is provided with exhaust spring and air inlet spring respectively, the bottom surface of exhaust movable rod and the movable rod that admits air is provided with the sealed lid that admits air respectively and admits air, the inside of breather valve main part is provided with the gas outlet, the bottom surface of admission line is provided with the air inlet, the top surface of gas outlet and air inlet respectively with the sealed lid of exhausting and admit air inlet seal between the sealed lid.

Preferably, the section of the sealing ring is corrugated.

Preferably, an upper connecting flange is arranged between the bottom surface of the main body of the breather valve and the top surface of the upper connecting disc of the flame arrester, and a lower connecting flange is arranged between the upper connecting disc of the flame arrester and the lower connecting disc of the flame arrester.

Preferably, an upper connecting bolt is arranged between the upper connecting flanges, and a lower connecting bolt is connected between the lower connecting flanges.

Preferably, the bottom surface of the lower connecting disc of the flame arrester is provided with a bottom connecting flange.

Preferably, the inner walls of the exhaust sleeve and the air inlet sleeve are movably connected with the exhaust movable rod and the air inlet movable rod.

Preferably, the side walls of the upper connecting bolt and the lower connecting bolt are provided with matched nuts.

Preferably, the sealing ring is respectively matched with the air outlet and the air inlet.

Advantageous effects

The utility model discloses in, the adoption is provided with the sealing washer respectively with the sealed lid of exhaust and between the sealed lid that admits air at the top surface of gas outlet and air inlet, and the cross-section of sealing washer is the corrugate, the sealing washer of corrugate can contract when receiving pressure, can kick-back when not having pressure, can make the sealing washer seal gas outlet and air inlet respectively when the sealed lid that admits air pushes down the sealing washer when the sealed lid that admits air, prevent that the inside phenomenon of disappointing and admitting air of appearance of breather valve main part, can maintain the stability of the inside material of storage tank under the normal conditions.

Drawings

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

FIG. 2 is a schematic view of the bottom structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the main body of the breather valve of the present invention;

fig. 4 is a schematic view of the internal structure of the sealing ring of the present invention.

Illustration of the drawings:

1. a breather valve body; 2. an exhaust duct; 3. an air intake duct; 4. the flame arrester is connected with a connecting disc; 5. a lower flame arrester connecting plate; 6. a fire retardant disc; 7. an exhaust sleeve; 8. an air intake sleeve; 9. an upper connecting flange; 10. a lower connecting flange; 11. a lower connecting bolt; 12. an upper connecting bolt; 13. a bottom connecting flange; 14. an exhaust movable rod; 15. an exhaust spring; 16. an exhaust seal cover; 17. an air intake movable rod; 18. an intake spring; 19. an air inlet sealing cover; 20. a seal ring; 21. an air outlet; 22. an air inlet.

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.

The first embodiment is as follows:

referring to fig. 1-4, a fire retardant breather valve with negative pressure protection function comprises a breather valve main body 1, a fire retardant upper connecting disc 4 is arranged on the bottom surface of the breather valve main body 1, a fire retardant lower connecting disc 5 is arranged on the bottom surface of the fire retardant upper connecting disc 4, an exhaust pipeline 2 is arranged on one side of the breather valve main body 1, an air inlet pipeline 3 is arranged on the other side of the breather valve main body 1, a fire retardant disc 6 is arranged between the fire retardant upper connecting disc 4 and the fire retardant lower connecting disc 5, an exhaust sleeve 7 and an air inlet sleeve 8 are respectively arranged on the top surfaces of the breather valve main body 1 and the air inlet pipeline 3, an exhaust movable rod 14 and an air inlet movable rod 17 are respectively arranged in the exhaust sleeve 7 and the air inlet sleeve 8, an exhaust spring 15 and an air inlet spring 18 are respectively arranged on the outer sides of the exhaust movable rod 14 and the air inlet movable rod 17, the exhaust spring 15 and the air inlet spring 18 can adjust the opening heights of the exhaust sealing cover 16 and the air inlet sealing cover 19 according to the pressure, an exhaust sealing cover 16 and an air inlet sealing cover 19 are respectively arranged on the bottom surfaces of the exhaust movable rod 14 and the air inlet movable rod 17, an air outlet 21 is arranged in the breather valve main body 1, an air inlet sealing cover 22 and an air inlet sealing cover 20 are respectively arranged on the bottom surface of the air inlet sealing cover 22 and the air inlet sealing cover 20.

Sealing washer 20's cross-section is corrugated, and sealing washer 20 respectively with gas outlet 21 and air inlet 22 phase-match, sealing washer 20 is flexible sealing rubber material, sealing washer 20 can seal gas outlet 21 and air inlet 22, exhaust spring 15 and air inlet spring 18 can make sealing washer 20 and exhaust seal lid 16 and the contact between the sealed lid 19 that admits air laminate more, the bottom surface of connection pad 5 is provided with bottom flange 13 under the spark arrester, bottom flange 13 is convenient for be connected between connection pad 5 and the storage tank under the spark arrester, be swing joint between exhaust sleeve 7 and air inlet sleeve 8's inner wall and exhaust movable rod 14 and the movable rod 17 that admits air, and exhaust sleeve 7 and air inlet sleeve 8 and exhaust movable rod 14 and the inside phase-match of the movable rod 17 that admits air.

The sealing ring 20 is arranged between the top surfaces of the air outlet 21 and the air inlet 22 and between the exhaust sealing cover 16 and the air inlet sealing cover 19 respectively, the cross section of the sealing ring 20 is corrugated, the corrugated sealing ring 20 can contract when being pressurized, resilience can be realized when no pressure exists, the sealing ring 20 can seal the air outlet 21 and the air inlet 22 when the exhaust sealing cover 16 and the air inlet sealing cover 19 press the sealing ring 20 downwards, the internal air leakage and air inlet phenomena of the breather valve main body 1 are prevented, and the stability of the internal substances of the storage tank can be maintained under normal conditions.

The second concrete embodiment:

referring to fig. 1-4, an upper connecting flange 9 is arranged between the bottom surface of a main body 1 of the breather valve and the top surface of an upper connecting disc 4 of a flame arrester, a lower connecting flange 10 is arranged between the upper connecting disc 4 of the flame arrester and a lower connecting disc 5 of the flame arrester, an upper connecting bolt 12 is arranged between the upper connecting flange 9, a lower connecting bolt 11 is connected between the lower connecting flange 10, matched nuts are arranged on the side walls of the upper connecting bolt 12 and the lower connecting bolt 11, both ends of the side walls of the upper connecting bolt 12 and the lower connecting bolt 11 are both provided with threads, and the nuts are in threaded connection with the upper connecting bolt 12 and the lower connecting bolt 11.

Be provided with rubber seal 20 between last flange 9, can keep the leakproofness between connecting pad 4 on breather valve main part 1 and the spark arrester after will going up to connect between flange 9 through last connecting bolt 12 and nut, and formula structure as an organic whole between breather valve main part 1 and exhaust duct 2 and the admission line 3.

In summary, the following steps:

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level 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 meaning that the first feature is at a lesser elevation 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 back-fire relief breather valve with negative pressure protect function, includes breather valve main part (1), its characterized in that: the bottom surface of breather valve main part (1) is provided with connection pad (4) on the spark arrester, the bottom surface of connection pad (4) is provided with connection pad (5) under the spark arrester on the spark arrester, one side of breather valve main part (1) is provided with exhaust duct (2), the opposite side of breather valve main part (1) is provided with admission line (3), be provided with fire retardant disk (6) on the spark arrester between connection pad (4) and connection pad (5) under the spark arrester, the top surface of breather valve main part (1) and admission line (3) is provided with exhaust sleeve (7) and admission sleeve (8) respectively, the inside of exhaust sleeve (7) and admission sleeve (8) is provided with exhaust movable rod (14) respectively and admits air movable rod (17), the outside of exhaust movable rod (14) and admission movable rod (17) is provided with exhaust spring (15) and admission spring (18) respectively, the bottom surface of exhaust movable rod (14) and admission movable rod (17) is provided with exhaust sealed lid (16) and admission sealed lid (19) respectively, the inside of exhaust movable rod (21) and admission seal lid (22) are provided with between gas outlet (21) and the gas inlet (22) respectively, exhaust seal lid (22) and gas outlet (21) and gas inlet (22) are provided with sealed lid (22) and sealed lid (19) respectively between the gas inlet (22) and the gas inlet sealing lid (22) of admitting air inlet (21) and the gas inlet (22) respectively (20).

2. A fire retardant breather valve with negative pressure protection function as claimed in claim 1, wherein: the section of the sealing ring (20) is corrugated.

3. A fire retardant breather valve with negative pressure protection function as claimed in claim 1, wherein: be provided with between connecting pad (4) top surface on breather valve main part (1) bottom surface and the spark arrester and go up flange (9), be provided with down flange (10) between connecting pad (4) and the lower connecting pad of spark arrester (5) on the spark arrester.

4. A fire retardant breather valve with negative pressure protection function as claimed in claim 3, wherein: and upper connecting bolts (12) are arranged between the upper connecting flanges (9), and lower connecting bolts (11) are connected between the lower connecting flanges (10).

5. A fire retardant breather valve with negative pressure protection function as claimed in claim 1, wherein: and a bottom connecting flange (13) is arranged on the bottom surface of the lower connecting disc (5) of the flame arrester.

6. A fire retardant breather valve with negative pressure protection function as claimed in claim 1, wherein: the inner walls of the exhaust sleeve (7) and the air inlet sleeve (8) are movably connected with the exhaust movable rod (14) and the air inlet movable rod (17).

7. A fire retardant breather valve with negative pressure protection function as claimed in claim 4, characterized in that: and matched nuts are arranged on the side walls of the upper connecting bolt (12) and the lower connecting bolt (11).

8. A fire retardant breather valve with negative pressure protection function as claimed in claim 1, wherein: and the sealing ring (20) is respectively matched with the air outlet (21) and the air inlet (22).