CN114458803A - Integrated fire-retardant breather valve with negative pressure protection function - Google Patents

Abstract

The invention discloses an integrated fire retardant breather valve with a negative pressure protection function, which comprises a valve body member, wherein the valve body member comprises a valve cover, a valve shell and an airflow cavity, the airflow cavity is arranged at the central axis inside the valve shell, the right side of the valve cover is communicated with a communicating pipeline, the right end of the communicating pipeline is communicated with an extending pipeline, a fire retardant member is arranged at the communicating part of the communicating pipeline and the extending pipeline, the fire retardant member comprises two groups of fire retardant cores and a heat conducting cover, and the inside of the heat conducting cover is divided into a first core cavity and a second core cavity through a heat conducting partition plate. This integral type back-fire relief breather valve with negative pressure protect function utilizes heat conduction cover to absorb and transmit the heat conduction post on with the back-fire relief core, and the heat conduction post transmits to fin group again, makes the effective and quick effluvium of heat on the back-fire relief core, and back-fire relief core cools off fast, has strengthened the resistant effect of burning of back-fire relief core, and then the indirect protection valve disc of breathing in and exhale the valve disc.

Description

Integrated fire-retardant breather valve with negative pressure protection function

Technical Field

The invention relates to the technical field of fire retardant breather valves, in particular to an integrated fire retardant breather valve with a negative pressure protection function.

Background

The back-fire relief breather valve is the necessary novel safety equipment of petrochemical industry storage tank, and back-fire relief breather valve theory of operation is with the spacing valve plate of spring, by positive and negative pressure decision or breathe or inhale, the breather valve should have two aspects functions of positive pressure and negative pressure of releasing particularly: when the container bears positive pressure, the breathing valve opens the exhaled gas to release the positive pressure; when the container bears negative pressure, the fire-retardant breather valve opens the negative pressure of the inhaled gas discharge, so that the pressure is ensured within a certain range, and the safety of the container is ensured.

The safety of the existing fire-retardant breather valve during use is low, when the fire-retardant breather valve is used, a fire-retardant core arranged in the fire-retardant breather valve cannot be cooled quickly after absorbing heat, so that the fire-retardant effect is affected, and meanwhile, the breather valve has the problem of poor tightness, so that the air pressure regulation is not stable enough.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an integrated fire-retardant breather valve with a negative pressure protection function, and solves the problems that the safety is low when the existing fire-retardant breather valve is used, the fire-retardant core of the fire-retardant breather valve cannot be rapidly cooled after absorbing heat, so that the fire-retardant effect is affected, and meanwhile, the airtightness of the breather valve is not strong, so that the air pressure regulation is not stable enough.

In order to achieve the purpose, the invention is realized by the following technical scheme: an integrated fire-retardant breather valve with a negative pressure protection function comprises a valve body member, wherein the valve body member comprises a valve cover, a valve shell and an air flow cavity, the air flow cavity is arranged at the central axis inside the valve shell, the right side of the valve cover is communicated with a communicating pipeline, the right end of the communicating pipeline is communicated with an extending pipeline, a fire-retardant member is arranged at the communicating part of the communicating pipeline and the extending pipeline, the fire-retardant member comprises two groups of fire-retardant cores and a heat-conducting cover, the inside of the heat-conducting cover is divided into a first core cavity and a second core cavity through a heat-conducting partition plate, the heat-conducting partition plate is arranged in an inclined way at 45 degrees, the upper part of the heat-conducting cover is fixedly connected with a heat-radiating fin group through the heat-conducting post, the heat-conducting cover, the heat-conducting partition plate and the heat-conducting post are integrally manufactured, the surface of the heat-conducting partition plate is provided with a plurality of air holes, the surface of the fire-retardant cores is provided with a plurality of fire-retardant pores, one end of the two groups of fire-retardant cores is provided with a splicing angle, and the angle of seting up at concatenation angle is 45 degrees, and is two sets of the concatenation angle department of back-fire relief core is equipped with the constant head tank, the both sides on heat conduction partition surface all are equipped with the reference column, and are two sets of the concatenation angle department of back-fire relief core all runs through to first core chamber and second core chamber department, and constant head tank and reference column joint, and the back-fire relief pore department and the vent department position of two sets of back-fire relief cores correspond and communicate.

Preferably, the upper end of the extension pipeline is spirally connected with a sealing bolt cover, the heat conduction column penetrates through the middle of the sealing bolt cover, and the sealing bolt cover is rotatably connected with the heat conduction column through a sealing bearing.

Preferably, the bottom end of the extension pipeline is provided with an isolation net, and the isolation net is clamped with the bottom end of the extension pipeline.

Preferably, the upper end and the lower end of the airflow cavity are provided with breathing valve assemblies, each breathing valve assembly comprises an inhalation valve assembly and an exhalation valve assembly, and each inhalation valve assembly and each exhalation valve assembly respectively comprise an inhalation valve disc and an exhalation valve disc.

Preferably, the equal fixedly connected with valve disc protects the seat in the upper end in the air flow cavity outside and the inboard bottom of air flow cavity, inhale the valve disc and exhale the valve disc crimping in the valve disc of the upper end in the air flow cavity outside and the inboard bottom of air flow cavity and protect the seat department, and inhale the valve disc and exhale and all be equipped with the rubber packing ring between valve disc and the valve disc protect the seat.

Preferably, a first sliding rod and a second sliding rod penetrate through the middle parts of the air suction valve disc and the first sliding rod respectively, and a first limiting sliding groove is formed in the middle part of the inner side of the valve cover.

Preferably, the upper end of the first sliding rod penetrates through the first limiting sliding groove, the bottom of the first sliding rod is provided with a second limiting sliding groove, and the upper end of the second sliding rod penetrates through the second limiting sliding groove.

Preferably, the outside of valve gap bottom passes through bolt fixed connection with the outside on valve casing upper portion, and presss from both sides between valve gap and the valve casing and be equipped with seal ring.

Advantageous effects

The invention provides an integrated fire retardant breather valve with a negative pressure protection function. Compared with the prior art, the method has the following beneficial effects:

(1) this integral type back-fire relief breather valve with negative pressure protect function, through heat conduction post fixedly connected with fin group on the upper portion at the heat conduction cover, and the heat conduction cover, heat conduction baffle and heat conduction post are integrative to be made, the multiunit air vent has been seted up on the surface of heat conduction baffle, utilize the heat conduction cover to absorb and transmit the heat conduction post on the back-fire relief core, the heat conduction post transmits to fin group again, make the effective and quick effluvium of heat on the back-fire relief core, the back-fire relief core cools off fast, the resistant fever effect of back-fire relief core has been reinforceed, and then indirect protection is breathed in the valve disc and is exhaled the valve disc.

(2) The integrated fire-retardant breather valve with the negative pressure protection function is characterized in that a plurality of groups of fire-retardant pores are arranged on the surface of the fire-retardant core, one end of each of the two groups of fire-retardant cores is provided with a splicing angle, the splicing angle is 45 degrees, the splicing angle of the two groups of fire retardant cores is provided with a positioning groove, the two sides of the surface of the heat conduction clapboard are provided with positioning columns, the splicing angle of the two groups of fire retardant cores is penetrated to the first core cavity and the second core cavity, the positioning groove is clamped with the positioning column, the positions of the fire-retardant pores of the two groups of fire-retardant cores correspond to and are communicated with the positions of the ventilating holes, a turning cavity is formed between the fire-retardant pores of the two groups of fire-retardant cores, thereby enlarging the contact area between the fine flame and the channel wall as much as possible, strengthening the heat transfer, reducing the flame temperature below the ignition point, thereby preventing flame from spreading, effectively improving the cooling efficiency of the fire retardant core and ensuring the use effect of the fire retardant core.

(3) This integral type back-fire relief breather valve with negative pressure protect function, through the equal fixedly connected with valve disc of the upper end in the air current cavity outside and the inboard bottom of air current cavity protect the seat, the valve disc of breathing in the upper end in the air current cavity outside and the inboard bottom of air current cavity of valve disc and expiration valve disc crimping department of protecting, and breathe in the valve disc and all be equipped with the rubber packing ring between valve disc and expiration valve disc and the valve disc protect the seat, utilize the valve disc of breathing in and the valve disc respectively with the upper end in the air current cavity outside and the valve disc protect the seat crimping of the inboard bottom of air current cavity, the sealing function between valve disc and the protect the seat has been guaranteed, the security when back-fire relief breather valve uses has been improved simultaneously.

(4) This integral type back-fire relief breather valve with negative pressure protect function, there is sealed bonnet through the upper end screwed connection at the extension pipeline, and the heat conduction post runs through in the middle part of sealed bonnet, rotate through sealed bearing between sealed bonnet and the heat conduction post and be connected, the bottom of extension pipeline is equipped with the separation net, and the bottom joint of separation net and extension pipeline, through setting up sealed bonnet, the back-fire relief component of being convenient for demolish and change, improve maintenance efficiency, again through setting up the separation net can effectually prevent that the foreign object from getting into back-fire relief component department through the extension pipeline, and influence the back-fire relief ventilation effect of back-fire relief component.

Drawings

FIG. 1 is a structural cross-sectional view of the present invention;

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

FIG. 3 is an exploded view of a firestop member of the present invention;

FIG. 4 is a structural left side view of a firestop core of the present invention;

fig. 5 is a left side view of the structure of the heat conductive cover of the present invention.

In the figure: 1. a valve body member; 11. a valve cover; 111. a first limiting chute; 12. a valve housing; 13. an airflow cavity; 131. a valve disc retainer; 14. a bolt; 15. a sealing gasket; 2. a communicating pipe; 3. an extension duct; 31. a sealing plug cover; 32. sealing the bearing; 33. an isolation net; 4. a firestop member; 41. a fire retardant core; 411. fire retarding pores; 42. splicing the corners; 43. positioning a groove; 44. a positioning column; 45. a heat conducting cover; 451. a thermally conductive spacer; 452. a first core cavity; 453. a second core cavity; 454. a vent hole; 455. a heat-conducting column; 456. a fin group; 5. a breathing valve element; 51. a suction valve assembly; 511. a suction valve disc; 512. a first slide bar; 513. a second limiting chute; 52. an exhalation valve assembly; 521. an expiratory valve disc; 522. a second slide bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an integrated fire retardant breather valve with negative pressure protection function comprises a valve body component 1, the valve body component 1 comprises a valve cover 11, a valve casing 12 and an air flow cavity 13, the air flow cavity 13 is arranged at the central axis inside the valve casing 12, breathing valve components 5 are arranged at the upper end and the lower end of the air flow cavity 13, the breathing valve components 5 comprise an inhalation valve component 51 and an exhalation valve component 52, the inhalation valve component 51 and the exhalation valve component 52 respectively comprise an inhalation valve disc 511 and an exhalation valve disc 521, the upper end outside the air flow cavity 13 and the bottom end inside the air flow cavity 13 are both fixedly connected with a valve disc protective seat 131, the inhalation valve disc 511 and the exhalation valve disc 521 are in compression joint with the upper end outside the air flow cavity 13 and the valve disc protective seat 131 at the bottom end inside the air flow cavity 13, rubber gaskets are arranged between the inhalation valve disc 511 and the exhalation valve disc 521 and the valve disc protective seat 131, the inhalation valve disc 521 and the exhalation valve disc 521 are respectively in compression joint with the upper end outside the air flow cavity 13 and the valve disc protective seat 131 at the bottom end inside the air flow cavity 13, the sealing function between the valve disc and the valve disc protective seat 131 is ensured, and the safety of the fire-retardant breather valve during use is improved, the first sliding rod 512 and the second sliding rod 522 are respectively penetrated through the middle parts of the air suction valve disc 511 and the first sliding rod 512, the first limiting sliding groove 111 is arranged at the middle part of the inner side of the valve cover 11, the upper end of the first sliding rod 512 is penetrated through the first limiting sliding groove 111, the second limiting sliding groove 513 is arranged at the bottom of the first sliding rod 512, the upper end of the second sliding rod 522 is penetrated through the second limiting sliding groove 513, the outer side of the bottom of the valve cover 11 is fixedly connected with the outer side of the upper part of the valve shell 12 through a bolt 14, a sealing gasket 15 is clamped between the valve cover 11 and the valve shell 12, the tightness of the connection between the valve cover 11 and the valve shell 12 is ensured through the sealing gasket 15, the breather valve is prevented from being sealed untight, and fluid is prevented from leaking, the right side of the valve cover 11 is communicated with a communicating pipeline 2, and the right end of the communicating pipeline 3 is communicated with the extending pipeline 3, the fire retardant component 4 is arranged at the communication position of the communication pipeline 2 and the extension pipeline 3, the fire retardant component 4 comprises two groups of fire retardant cores 41 and a heat conduction cover 45, the interior of the heat conduction cover 45 is divided into a first core cavity 452 and a second core cavity 453 through a heat conduction partition 451, the heat conduction partition 451 is arranged at an inclination angle of 45 degrees, the upper part of the heat conduction cover 45 is fixedly connected with a radiating fin group 456 through a heat conduction column 455, the heat conduction cover 45, the heat conduction partition 451 and the heat conduction column 455 are integrally manufactured, the upper end of the extension pipeline 3 is spirally connected with a sealing plug cover 31, the heat conduction column 455 penetrates through the middle part of the sealing plug cover 31, the sealing plug cover 31 is rotatably connected with the heat conduction column 455 through a sealing bearing 32, the fire retardant component 4 is convenient to detach and replace through the sealing plug cover 31, the maintenance efficiency is improved, the isolation net 33 is arranged at the bottom end of the extension pipeline 3, the isolation net 33 is clamped with the bottom end of the extension pipeline 3, and foreign objects can be effectively prevented from entering the isolation component 4 through the extension pipeline 3 through the arrangement of the isolation net 33, and influence back-fire relief ventilation effect of back-fire relief component 4, the surface of heat conduction baffle 451 has seted up multiunit air vent 454, and the surface of back-fire relief core 41 has seted up multiunit back-fire relief pore 411, concatenation angle 42 has all been seted up to the one end of two sets of back-fire relief cores 41, and the angle of seting up of concatenation angle 42 is 45 degrees, concatenation angle 42 department of two sets of back-fire relief cores 41 is equipped with constant head tank 43, the both sides on heat conduction baffle 451 surface all are equipped with reference column 44, concatenation angle 42 department of two sets of back-fire relief cores 41 all runs through to first core chamber 452 and second core chamber 453 department, and constant head tank 43 and reference column 44 joint, and back-fire relief pore 411 department and air vent 454 department position of two sets of back-fire relief cores 41 correspond and communicate, utilize heat conduction cover 45 to absorb and transmit the heat on back-fire relief core 41 to heat conduction post 455, heat conduction post 455 passes to fin group 456 again, make the heat on the back-fire relief core 41 effectively and quick effluvium, back-fire relief core 41 cools off fast, the burning resistance effect of fire retardant core 41 is enhanced, thereby indirectly protecting air suction valve disc 511 and air exhalation valve disc 521.

And those not described in detail in this specification are well within the skill of those in the art.

During operation, flame will become a plurality of tiny flames after passing through many tiny back-fire relief pores 411 of back-fire relief component 4 department, form the turn chamber between the back-fire relief pores 411 of two sets of back-fire relief cores 41, thereby then enlarge the area of contact of tiny flame and passageway wall as far as possible, strengthen the heat transfer, make the flame temperature drop to below the point of ignition, thereby prevent flame spread, heat conduction cover 45 and back-fire relief core 41 laminating simultaneously, make heat conduction cover 45 absorb and transmit the heat conduction post 455 on back-fire relief core 41, heat conduction post 455 passes to fin group 456 again, make the effectual effluvium of heat on the back-fire relief core 41, thereby make back-fire relief core 41 cool off fast, guarantee the back-fire relief effect of back-fire relief core 41.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (8)

1. The utility model provides an integral type back-fire relief breather valve with negative pressure protect function, includes valve body component (1), its characterized in that: the valve body component (1) comprises a valve cover (11), a valve shell (12) and an airflow cavity (13), the airflow cavity (13) is arranged at the central axis inside the valve shell (12), the right side of the valve cover (11) is communicated with a communicating pipeline (2), the right end of the communicating pipeline (2) is communicated with an extending pipeline (3), a fire retardant component (4) is arranged at the communicating position of the communicating pipeline (2) and the extending pipeline (3), the fire retardant component (4) comprises two groups of fire retardant cores (41) and a heat conducting cover (45), the inside of the heat conducting cover (45) is divided into a first core cavity (452) and a second core cavity (453) through a heat conducting partition plate (451), the heat conducting partition plate (451) is arranged at an inclined angle of 45 degrees, the upper part of the heat conducting cover (45) is fixedly connected with a heat radiating fin group (456) through a heat conducting column (455), and the heat conducting cover (45), the heat conducting partition plate (451) and the heat conducting column (455) are integrally manufactured, multiunit air vent (454) have been seted up on the surface of heat conduction baffle (451), and the surface of back-fire relief core (41) has seted up multiunit back-fire relief pore (411), concatenation angle (42) have all been seted up to the one end of two sets of back-fire relief core (41), and the angle of seting up of concatenation angle (42) is 45 degrees, and is two sets of the concatenation angle (42) department of back-fire relief core (41) is equipped with constant head tank (43), the both sides on heat conduction baffle (451) surface all are equipped with reference column (44), and are two sets of the concatenation angle (42) department of back-fire relief core (41) all runs through to first core chamber (452) and second core chamber (453) department, and constant head tank (43) and reference column (44) joint, and the back-fire relief pore (411) department of two sets of back-fire relief core (41) corresponds and communicates with air vent (454) department position.

2. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 1, wherein: the upper end of the extension pipeline (3) is spirally connected with a sealing bolt cover (31), the heat conduction column (455) penetrates through the middle of the sealing bolt cover (31), and the sealing bolt cover (31) is rotatably connected with the heat conduction column (455) through a sealing bearing (32).

3. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 1, wherein: the bottom end of the extension pipeline (3) is provided with an isolation net (33), and the isolation net (33) is clamped with the bottom end of the extension pipeline (3).

4. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 1, wherein: the upper end and the lower end of the airflow cavity (13) are provided with breathing valve assemblies (5), each breathing valve assembly (5) comprises an inhalation valve assembly (51) and an exhalation valve assembly (52), and the inhalation valve assembly (51) and the exhalation valve assembly (52) respectively comprise an inhalation valve disc (511) and an exhalation valve disc (521).

5. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 4, wherein: the equal fixedly connected with valve disc protects seat (131) in the bottom of the upper end in airflow cavity (13) outside and airflow cavity (13) inboard, inhale valve disc (511) and exhale valve disc (521) crimping and protect seat (131) department at the upper end in airflow cavity (13) outside and the valve disc of the bottom of airflow cavity (13) inboard, and inhale valve disc (511) and exhale valve disc (521) and valve disc and protect and all be equipped with the rubber packing ring between seat (131).

6. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 4, wherein: the middle parts of the air suction valve disc (511) and the first sliding rod (512) are respectively penetrated with a first sliding rod (512) and a second sliding rod (522), and the middle part of the inner side of the valve cover (11) is provided with a first limiting sliding groove (111).

7. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 6, wherein: the upper end of the first sliding rod (512) penetrates through the first limiting sliding groove (111), the bottom of the first sliding rod (512) is provided with a second limiting sliding groove (513), and the upper end of the second sliding rod (522) penetrates through the second limiting sliding groove (513).

8. The integrated fire retardant breather valve with the negative pressure protection function as claimed in claim 1, wherein: the outer side of the bottom of the valve cover (11) is fixedly connected with the outer side of the upper part of the valve casing (12) through a bolt (14), and a sealing gasket (15) is clamped between the valve cover (11) and the valve casing (12).

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