CN220151971U - Dustproof explosion-proof breather valve - Google Patents

Abstract

The utility model discloses a dustproof and explosion-proof breather valve, which comprises a main body assembly, a first cavity, a second cavity, a negative pressure valve disc, a positive pressure valve disc, a negative pressure valve seat, a positive pressure valve seat and a protective assembly, wherein the first cavity and the second cavity are arranged in the valve body; according to the utility model, large-particle dust is filtered and beaten through the rotation of the dust-proof plate, meanwhile, the fire-retarding core is cleaned through the anti-static dust-removing brush so as not to be blocked, the cleaning plate is arranged to help the collection of light oil, further help the adsorption of dust, and prevent the light oil from being combined with the dust on the fire-retarding core along with the airflow so as to influence the fire prevention and explosion prevention of the breather valve.

Description

Dustproof explosion-proof breather valve

Technical Field

The utility model relates to the technical field of safety accessories of oil and gas storage tanks, in particular to a dustproof and explosion-proof breather valve.

Background

Currently in the petrochemical field, a breather valve is a necessary safety accessory for a large storage tank to maintain internal pressure to fluctuate within a constant range. Discharging and discharging gas when the temperature rises/the feeding is over-pressure; when negative pressure is formed during cooling/discharging, external air is sucked, and the air is prevented from being shrunken.

At present, the breather valve can inhale some dust in the storage tank in the use, and some light oil also are easy on the air current import and export, and the dust is adsorbed by light oil, and then influences the leakproofness of breather valve, to the oil gas storage, the breather valve also needs to have fire prevention explosion-proof function.

At present, the chinese utility model with publication number CN204372251U discloses a dustproof and explosion-proof breather valve, which comprises a breather valve outer shell, a breather valve cover, a negative pressure cavity, a ventilation cavity, a positive pressure cavity, an exhalation valve disc, an inhalation cavity, an exhalation cavity and a filtering and explosion-proof device, wherein the filtering and explosion-proof device comprises a sealed water tank and an air suction pipe, and the dust removal operation can be performed, but manual regular water supplementing is troublesome, and the problem of light oil is not solved, and the use is limited.

For this reason we propose the present utility model to solve the above problems.

Disclosure of Invention

The utility model solves the technical problems that: the existing breather valve needs manual regular water replenishing to be troublesome, and the problem of light oil is not solved, and the use is limited.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a dustproof explosion-proof breather valve includes, the body subassembly, including the valve body, set up first cavity and second cavity in the valve body, set up the negative pressure valve disc in first cavity to and set up the malleation valve disc in the second cavity, negative pressure valve disc and malleation valve disc and valve body bolted connection, first cavity and second cavity intercommunication, first cavity and second cavity top intercommunication department is provided with the negative pressure disk seat, negative pressure disk seat and valve body inner wall fixed connection, first cavity and second cavity bottom intercommunication department is provided with the malleation disk seat, malleation disk seat and valve body inner wall fixed connection; the protection assembly comprises a shell, an opening, a fire-retardant core and a dust-proof plate, wherein the shell is fixedly arranged on the outer side of the valve body, the opening is formed in the shell and communicated with the second cavity, the fire-retardant core is arranged on the opening, and the dust-proof plate is arranged in the shell and is adjacent to the fire-retardant core.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: the negative pressure valve disc and the positive pressure valve disc are respectively placed above the negative pressure valve seat and the positive pressure valve seat, a round hole is formed in the middle of the negative pressure valve disc, the positive pressure valve disc, the negative pressure valve seat and the positive pressure valve seat, a first fixing rod is arranged in the middle of the round hole of the negative pressure valve disc and the round hole of the negative pressure valve seat, a second fixing rod is arranged in the middle of the round hole of the positive pressure valve disc and the round hole of the positive pressure valve seat, the first fixing rod and the second fixing rod are in threaded connection with the valve body, the diameter of the negative pressure valve disc is larger than that of the negative pressure valve seat, and the diameter of the positive pressure valve disc is larger than that of the positive pressure valve seat.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: the shell is internally provided with a third fixing rod in threaded connection, and the dust guard is arranged at one end of the third fixing rod and rotates by taking the dust guard as an axle center.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: the dust guard is provided with at least two first air filtering plates, and the first air filtering plates are provided with longitudinal dust removal grooves.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: the first air filtering plate is provided with a second air filtering plate, and the second air filtering plate is provided with a transverse dust removing groove.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: and one end of the first air filtering plate, which is close to the fire-retardant core, is fixedly provided with an antistatic dust-removing brush, and the antistatic dust-removing brush is contacted with the fire-retardant core.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: a cleaning plate is arranged on one side, close to the valve body, of the fire-retardant core, and a filter screen is arranged on the cleaning plate.

As a preferable scheme of the dustproof and explosion-proof breather valve, the utility model comprises the following steps: the cleaning plate outside is provided with draws the stain ring, draw the fixed collection box that is provided with in stain ring below, collection box and cleaning plate fixed connection.

The utility model has the beneficial effects that: according to the utility model, the dust-proof plate is driven to rotate by the self action of the air inlet and the air outlet of the breather valve, so that large-particle dust is filtered and beaten off, in addition, the fire-retarding core is cleaned by the anti-static dust-removing brush to avoid blocking while the dust-proof plate rotates, the cleaning plate is arranged, the collection of light oil is facilitated, the auxiliary adsorption of dust is further facilitated, and the effect that the light oil is combined with the dust to influence the breather valve along with the air flow to the fire-retarding core is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is a schematic diagram of the overall structure of a dustproof and explosion-proof breather valve of the present utility model.

Fig. 2 is a schematic structural diagram of a protection component part of a dustproof and explosion-proof breather valve according to the present utility model.

Fig. 3 is a schematic view of a dust-proof plate structure of a dust-proof explosion-proof breather valve according to the present utility model.

Fig. 4 is a schematic diagram of a cleaning plate structure of a dustproof and explosion-proof breather valve of the present utility model.

Reference numerals: 1. a valve body; 2. a first cavity; 3. a second cavity; 4. a negative pressure valve disc; 5. a positive pressure valve disc; 6. a negative pressure valve seat; 7. a positive pressure valve seat; 8. a housing; 9. a fire-retardant core; 10. a dust-proof plate; 11. a first fixing rod; 12. a second fixing rod; 13. a third fixing rod; 14. a first air filter plate; 15. a second air filter plate; 16. an antistatic dust removing brush; 17. a cleaning plate; 18. a stain guiding ring; 19. and a collection box.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Example 1

Referring to fig. 1, there is provided a dust-proof explosion-proof breather valve comprising a main body assembly, which comprises a valve body 1, a first cavity 2 and a second cavity 3 arranged in the valve body 1, a negative pressure valve disc 4 arranged in the first cavity 2, and a positive pressure valve disc 5 arranged in the second cavity 3, wherein the negative pressure valve disc 4 and the positive pressure valve disc 5 are in bolt connection with the valve body 1, the first cavity 2 is communicated with the second cavity 3, a negative pressure valve seat 6 is arranged at the position where the first cavity 2 is communicated with the top of the second cavity 3, the negative pressure valve seat 6 is fixedly connected with the inner wall of the valve body 1, a positive pressure valve seat 7 is arranged at the position where the first cavity 2 is communicated with the bottom of the second cavity 3, and the positive pressure valve seat 7 is fixedly connected with the inner wall of the valve body 1; the protection assembly comprises a shell 8 fixedly arranged on the outer side of the valve body 1, an opening formed in the shell 8 and communicated with the second cavity 3, a fire-retarding core 9 arranged on the opening, and a dust-proof plate 10 arranged in the shell 8 and adjacent to the fire-retarding core 9.

Specifically, in this embodiment, the valve body 1 is set to be a cylindrical cavity with a wide upper part and a narrow lower part, the lower end of the valve body 1 is connected with the exhaust port of the tank body, the first cavity 2 extends from the top of the valve body 1 to the bottom of the valve body 1 in a 7 shape and is connected with the exhaust port, the second cavity 3 is square and is positioned in the middle of the whole valve body 1, the top and the bottom of the second cavity are communicated with the first cavity 2, the negative pressure valve seat 6 is arranged at the top of the second cavity 3 and is communicated with the first cavity 2, the negative pressure valve disc 4 is arranged on the negative pressure valve seat 6, the first cavity 2 and the top of the second cavity 3 are sealed by means of self gravity, the positive pressure valve seat 7 is arranged at the bottom of the second cavity 3 and is communicated with the first cavity 2, the positive pressure valve disc 5 is arranged on the positive pressure valve seat 7, the first cavity 2 and the second cavity 3 are sealed by means of self gravity and are not communicated by the negative pressure valve disc 4 and the positive pressure valve disc 5 under normal conditions. The left side of second cavity 3 and casing 8 intercommunication, casing 8 air current mouth sets up down, casing 8 and second cavity 3 intercommunication department is provided with fire-blocking core 9, fire-blocking core 9 adopts ripple fire-blocking core here, negative pressure valve disc 4, malleation valve disc 5, negative pressure disk seat 6 and malleation disk seat 7 adopt stainless steel material, negative pressure valve disc 4 and malleation valve disc 5 and valve body 1 bolted connection, negative pressure valve disc 4 and malleation valve disc 5 can take place the displacement in vertical direction, the dust guard 10 of setting up in fire-blocking core 9 left side can help avoiding the entering of dust to influence the leakproofness and the fire prevention explosion-proof effect of breather valve, dust guard 10 sets up to have the arc of vertical notch in this embodiment, be provided with 2 at least, its arc mouth orientation is down, when the business turn over gas operation is carried out from the below because the air current, especially the air current direction about when admitting, can promote dust guard 10 to take place to rotate, the notch can be divided into less branch with the air current, thereby big granule can be beaten or follow dust guard 10 rotation and take up the effect.

The operation process comprises the following steps: in the negative pressure state, the pressure is larger than the gravity of the negative pressure valve disc 4, the negative pressure valve disc 4 is lifted to be separated from the negative pressure valve seat 6, the shell 8, the first cavity 2 and the second cavity 3 are communicated, air flow enters through the bottom end of the shell 8, dust is removed through the dust-proof plate 10 and is shunted to enter the second cavity 3 through the fire-retardant core 9, then enters the first cavity 2 from the top of the second cavity 3, and finally is output from the bottom of the valve body 1; in the positive pressure state, the pressure is larger than the gravity of the positive pressure valve disc 5, the positive pressure valve disc 5 is lifted to be separated from the positive pressure valve seat 7, and air flow enters the second cavity 3 from the bottom of the first cavity 2 to the bottom of the second cavity 3, passes through the fire-retarding core 9 and the dust-preventing plate 10, and finally is output from the bottom of the shell 8.

Example 2

Referring to fig. 1-3, this embodiment differs from the first embodiment in that: the negative pressure valve disc 4 and the positive pressure valve disc 5 are respectively arranged above the negative pressure valve seat 6 and the positive pressure valve seat 7, round holes are formed in the middles of the negative pressure valve disc 4, the positive pressure valve disc 5, the negative pressure valve seat 6 and the positive pressure valve seat 7, a first fixing rod 11 is arranged in the middle of the round holes of the negative pressure valve disc 4 and the negative pressure valve seat 6, a second fixing rod 12 is arranged in the middle of the round holes of the positive pressure valve disc 5 and the positive pressure valve seat 7, the first fixing rod 11 and the second fixing rod 12 are in threaded connection with the valve body 1, the diameter of the negative pressure valve disc 4 is larger than that of the negative pressure valve seat 6, and the diameter of the positive pressure valve disc 5 is larger than that of the positive pressure valve seat 7; a third fixing rod 13 in threaded connection is arranged in the shell 8, and the dust guard 10 is arranged at one end of the third fixing rod 13 and rotates around the third fixing rod as an axis; at least two first air filtering plates 14 are arranged on the dust-proof plate 10, and longitudinal dust-removing grooves are formed in the first air filtering plates 14; the first air filtering plate 14 is provided with a second air filtering plate 15, and the second air filtering plate 15 is provided with a transverse dust removal groove; the first air filter plate 14 is provided with an antistatic dust-removing brush 16 near one end of the fire-retarding core 9, the antistatic dust-removing brush 16 contacts with the fire-retarding core 9, and the rest structure is the same as that of the embodiment 1.

Specifically, negative pressure disk seat 6 and malleation disk seat 7 respectively with first dead lever 11 and second dead lever 12 threaded connection, negative pressure disk 4 and malleation disk 5 respectively with first dead lever 11 and second dead lever 12 swing joint, negative pressure disk 4 and malleation disk 5 can carry out vertical direction's up-and-down motion respectively on first dead lever 11 and second dead lever 12, negative pressure disk 4 diameter is greater than negative pressure disk seat 6, malleation disk 5 diameter is greater than malleation disk seat 7, makes negative pressure disk seat 6 and malleation disk seat 7 can support spacing to negative pressure disk 4 and malleation disk 5.

Further, the horizontal setting of third dead lever 13, one end and casing 8 inner wall threaded connection conveniently dismantle and install, the other end sets up towards fire block 9, the logical groove has been seted up to dust guard 10 middle, third dead lever 13 stretches out from logical groove, third dead lever 13 all is provided with the arch that the diameter is greater than logical groove about logical groove and conveniently spacing dust guard 10, and dust guard 10 can rotate on third dead lever 13, dust guard 10 sets up into 4 first aviation baffle 14 in this embodiment, 4 all have decurrent radian and set up vertical dust removal groove, 4 first aviation baffle 14 evenly set up along circumference and the radius is unanimous with fire block 9 radius, second aviation baffle 15 has been seted up with first aviation baffle 14 on vertical dust removal groove's dust removal groove, second aviation baffle 15 transversely sets up on first aviation baffle 14, second aviation baffle 15 left end and first aviation baffle 14 left end fixed connection, second aviation baffle 15 right-hand member is kept away from first aviation baffle 14 right-hand member but is close to fire block 9 setting, second aviation baffle 15 has a left side mouth and has down and a lower air current to rotate the first aviation baffle 14 and the radial angle that the second aviation baffle 15 is better when the second aviation baffle 15 has a left side mouth and the first aviation baffle 14 is formed and the second aviation baffle is rotated 60 and the filter effect that can be better.

Further, the one end that is close to fire-retardant core 9 at first aviation baffle 14 is fixed and is provided with antistatic dust removal brush 16, antistatic dust removal brush 16 and fire-retardant core 9 contact, and such setting is also cleaning fire-retardant core 9 when first aviation baffle 14 and second aviation baffle 15 take place to rotate, prevents that dust, greasy dirt from piling up at fire-retardant core 9, influences air current business turn over and fire prevention explosion-proof effect, adopts antistatic material to promote the security of device greatly.

The operation process comprises the following steps: in the negative pressure state, the pressure is larger than the gravity of the negative pressure valve disc 4, the negative pressure valve disc 4 is lifted to be separated from the negative pressure valve seat 6, the shell 8, the first cavity 2 and the second cavity 3 are communicated, air flow enters through the bottom end of the shell 8, the air flow is subjected to dust removal and flow division through rotation of the second air filtering plate 15 and the first air filtering plate 14, meanwhile, the anti-static dust removal brush 16 cleans the fire-retarding core 9, then enters the second cavity 3 through the fire-retarding core 9, enters the first cavity 2 from the top of the second cavity 3, and finally is output from the bottom of the valve body 1; in the positive pressure state, the pressure is larger than the gravity of the positive pressure valve disc 5, the positive pressure valve disc 5 is lifted to be separated from the positive pressure valve seat 7, and air flow enters the second cavity 3 from the bottom of the first cavity 2 to the bottom of the second cavity 3, passes through the fire-retarding core 9 and the dust-preventing plate 10, and finally is output from the bottom of the shell 8.

Example 3

Referring to fig. 1 to 4, this embodiment differs from the above embodiment in that: a cleaning plate 17 is arranged on one side of the fire-retarding core 9 close to the valve body 1, and a filter screen is arranged on the cleaning plate 17; the cleaning plate 17 outside is provided with draws the stain ring 18, draws the fixed collection box 19 that is provided with in stain ring 18 below, and collection box 19 and cleaning plate 17 fixed connection, other structures are the same as embodiment 2.

Specifically, the cleaning plate 17 is mainly used for blocking light oil carried out when air flows out, collecting the light oil, and further filtering dust entering the valve body 1 for the second time, and in this embodiment, the mesh diameter of the filter screen is larger than that of the fire-retardant core 9, so that normal use is prevented from being affected by too small mesh diameter, the stain guiding ring 18 is a double-sided ring with a ring height higher than that of the cleaning plate 17, and the cleaning plate 17 and the valve body 1 are in threaded connection or other detachable connection modes.

The specific implementation principle is as follows: the height of the stain guiding ring 18 is higher than that of the cleaning plate 17, so that the collected light oil can be downwards collected by gravity and finally flows into the collecting box 19 along the stain guiding ring 18, and part of dust entering the valve body 1 can be adsorbed by oil stains in the collecting box 19, thereby achieving the effect of secondary dust removal; the cleaning plate 17 and the valve body 1 are in threaded connection or other detachable connection modes, so that the cleaning plate is convenient to take out, clean and replace regularly, and the service effect and the service life of the breather valve are prolonged.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (8)

1. A dustproof explosion-proof breather valve which characterized in that: comprising the steps of (a) a step of,

the main body assembly comprises a valve body (1), a first cavity (2) and a second cavity (3) which are arranged in the valve body (1), a negative pressure valve disc (4) which is arranged in the first cavity (2) and a positive pressure valve disc (5) which is arranged in the second cavity (3), wherein the negative pressure valve disc (4) and the positive pressure valve disc (5) are in bolt connection with the valve body (1), the first cavity (2) is communicated with the second cavity (3), a negative pressure valve seat (6) is arranged at the top communication part of the first cavity (2) and the second cavity (3), the negative pressure valve seat (6) is fixedly connected with the inner wall of the valve body (1), a positive pressure valve seat (7) is arranged at the bottom communication part of the first cavity (2) and the second cavity (3), and the positive pressure valve seat (7) is fixedly connected with the inner wall of the valve body (1).

The protection assembly comprises a shell (8) fixedly arranged on the outer side of the valve body (1), an opening which is arranged on the shell (8) and communicated with the second cavity (3), a fire-retarding core (9) arranged on the opening, and a dust-proof plate (10) which is arranged in the shell (8) and is adjacent to the fire-retarding core (9).

2. The dust and explosion proof breather valve of claim 1, wherein: negative pressure valve disc (4) and positive pressure valve disc (5) are placed respectively in negative pressure disk seat (6) and positive pressure disk seat (7) top, the round hole has been seted up in the middle of negative pressure valve disc (4), positive pressure valve disc (5), negative pressure valve seat (6) and positive pressure disk seat (7), be provided with first dead lever (11) in the middle of negative pressure valve disc (4) and negative pressure valve seat (6) round hole, be provided with second dead lever (12) in the middle of positive pressure valve disc (5) and positive pressure disk seat (7) round hole, first dead lever (11) and second dead lever (12) all with valve body (1) threaded connection, negative pressure valve disc (4) diameter is greater than negative pressure valve seat (6), positive pressure valve disc (5) diameter is greater than positive pressure disk seat (7).

3. The dust and explosion proof breather valve of claim 2, wherein: a third fixing rod (13) in threaded connection is arranged in the shell (8), and the dust-proof plate (10) is arranged at one end of the third fixing rod (13) and rotates by taking the dust-proof plate as an axle center.

4. A dust and explosion proof breather valve as set forth in claim 3, wherein: at least two first air filtering plates (14) are arranged on the dust-proof plate (10), and longitudinal dust-removing grooves are formed in the first air filtering plates (14).

5. The dust and explosion proof breather valve of claim 4, wherein: the first air filtering plate (14) is provided with a second air filtering plate (15), and the second air filtering plate (15) is provided with a transverse dust removal groove.

6. The dust and explosion proof breather valve of claim 5, wherein: one end of the first air filtering plate (14) close to the fire-retarding core (9) is fixedly provided with an antistatic dust-removing brush (16), and the antistatic dust-removing brush (16) is in contact with the fire-retarding core (9).

7. The dust and explosion proof breather valve of claim 1, wherein: one side of the fire-retarding core (9) close to the valve body (1) is provided with a cleaning plate (17), and a filter screen is arranged on the cleaning plate (17).

8. The dust and explosion proof breather valve of claim 7, wherein: the cleaning plate (17) outside is provided with draws stain ring (18), draw stain ring (18) below fixedly to be provided with collection box (19), collection box (19) and cleaning plate (17) fixed connection.