CN213712009U - Oil smoke discharging fireproof check valve - Google Patents

Abstract

The utility model discloses an oil smoke gas fire prevention check valve of discharging, including aviation baffle and with aviation baffle fixed connection's check valve main part, the check valve main part includes the shell and installs the apron subassembly in the shell intracavity, the apron subassembly includes the bottom plate, fix cylindric air outlet and apron on the bottom plate, welded fastening has the support on the bottom plate, the riveting has the connecting plate on the apron of correspondence, the connecting plate is connected with the leg joint, be fixed with the both sides board at the bottom plate in the both ends of air outlet at the support, set up the spout of slope on the board of both sides, be connected with fusing mechanism on the support, fusing mechanism includes the depression bar of high temperature fusing back edge spout gliding laminating apron, be provided with the extension spring that is the V type and coils the setting on each curb plate, the one end side of extension spring is connected with the grapple and is used for setting up the. The utility model discloses a fire prevention check valve of oil extraction cigarette adopts two independent extension springs to the pinch roller on the cooperation depression bar can support the valve cover body, has guaranteed the reliability of its during operation.

Description

Oil smoke discharging fireproof check valve

Technical Field

The utility model relates to a flue exhaust check valve technical field especially relates to an oil extraction flue gas fire prevention check valve.

Background

The oil smoke exhausting fireproof check valve is usually installed at the inlet of a common exhaust pipeline with fire resistance grade at the rear end of a kitchen range hood or a toilet exhaust fan, the fan is in an open state (exhausting waste gas) during working, the fan is in a natural close state (preventing waste gas from flowing back) during non-working, the indoor or common air channel can be automatically closed when the air temperature reaches a preset value, the requirement on fire resistance is met within a specified time, and the valve plays a role in smoke isolation and fire retardation.

The oil smoke fire-proof check valve used in the prior art generally comprises an exhaust funnel and a valve plate, wherein the valve plate is rotatably arranged on an air outlet of the exhaust funnel by using a pin shaft, and when the range hood is not used, the valve plate is in a closed state due to self gravity and covers the air outlet; when the range hood is used, the valve plate is opened by the impact force of oil smoke and forms a flue.

Above-mentioned fire prevention check valve has certain safety problem, and when any one family conflagration breaks out, a large amount of high temperature harmful gas gushes into public flue gas channel, if can not in time close the valve block that the common wind channel stopped the return valve this moment, and these a large amount of high temperature harmful gas can get into in the user's family that is using the lampblack absorber on the oil smoke circulation direction through the interface that admits air of flue check valve, threatens resident family's life safety. To the above situation, the existing fusing structure and the pressing rod are adopted to limit the opening of the valve cover body, but the oil smoke in the range hood can be attached to the mechanism, so that the sliding of the pressing rod is easily limited.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide an oil extraction flue gas fire prevention check valve adopts two independent extension springs to the pinch roller on the cooperation depression bar can support the valve lid, has guaranteed the reliability of its during operation.

The technical scheme of the utility model as follows:

a fire-proof check valve for oil smoke exhaust comprises an air deflector and a check valve main body fixedly connected with the air deflector, the check valve main body comprises a shell and a cover plate component arranged in the inner cavity of the shell, the cover plate component comprises a bottom plate, a cylindrical air outlet and a cover plate, the cylindrical air outlet and the cover plate are fixed on the bottom plate, a bracket is welded and fixed on the bottom plate, the cover plate is correspondingly riveted with a connecting plate which is rotationally connected with the bracket, two side plates are fixed on the two ends of the bottom plate and the air outlet of the bracket, inclined sliding grooves are arranged on the two side plates, the bracket is connected with a fusing mechanism which comprises a pressure lever which is glidingly jointed with the cover plate along the sliding chute after high-temperature fusing, each side plate is provided with a tension spring which is arranged in a V-shaped winding manner, and one end side of each tension spring is connected with a grapple which is used for being hooked at two ends of the compression bar.

Furthermore, a mounting bar is welded and fixed at the bottom of the shell, and a bolt penetrating through the mounting bar is arranged on the shell in a penetrating mode for fixing.

Furthermore, a sealing ring is sleeved at the circumferential position of the cover plate.

Furthermore, a support column is fixed in the middle of one end, far away from the fusing mechanism, of the side plate, and the tension spring is coiled in a V shape through the support column; the bottom of the other end of the side plate is provided with a through hole, and the other end side of the tension spring is hooked in the through hole through a grapple.

Furthermore, the fusing mechanism further comprises a fusing hook sheet hooked on the support, a limiting clamping strip used for limiting the pressure rod, a connecting rod used for connecting the fusing hook sheet and the limiting clamping strip, and a spring used for ejecting the limiting pressing block after fusing.

Furthermore, a limiting strip is fixedly connected between the two side plates, one end of the connecting rod penetrates through the limiting strip and is connected with the fusing hook piece, the other end of the connecting rod is connected with the limiting clamping strip, and the spring is arranged between the limiting clamping strip and the limiting strip and is in a compressed state.

Further, spacing with spacing card strip is the U type to set up the joint piece at the both ends of spacing strip, the joint piece buckle the back with the piece block of buckling on the curb plate is fixed, the spring sets up the inslot at spacing strip, and the both ends of spacing card strip are blocked respectively and are established in the outside of spacing strip and depression bar simultaneously.

Furthermore, the two ends of the pressing rod are rotatably provided with sliding wheels, so that the sliding wheels are preferentially contacted with the cover plate in advance in the pressing process of the pressing rod. In addition, the contact surface of the cover plate and the sliding wheel is convex.

The utility model provides a beneficial effect: the V-shaped coiled tension spring can be independently operated, so that the problem that the performance of a single tension spring is reduced after the tension spring is used for a long time and the compression bar cannot be pulled down is avoided; through the arrangement of the fusing mechanism, when the temperature is high, the fusing hook piece is fused, the limiting clamping strip is ejected out under the action of the spring, the pressure rod is further separated from the limiting, the pressure rod is pulled downwards under the action of the tension spring, and the cover plate is abutted and covered by the pressure rod; through setting up the movable pulley, can avoid the depression bar can't slide to the spout bottom in the use, cause sealed not tight.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the fire-proof check valve for discharging oil smoke provided by the present invention;

FIG. 2 is a schematic structural view of a check valve body;

FIG. 3 is a schematic structural view of the cover plate assembly of FIG. 2;

fig. 4 is a schematic view of another perspective structure of the cover plate assembly.

In the figure:

1-an air deflector; 2-a check valve body; 21-a housing; 211-mounting bars; 3-a cover plate assembly; 31-a base plate; 32-air outlet; 33-cover plate; 331-a connecting plate; 332-a sealing ring; 34-a stent; 35-side plate; 351-a chute; 352-support column; 353, a tension spring; 354-grapple; 36-a limit bar; 361-a card block; 362-a through slot; 4-a fusing mechanism; 41-fusing hook sheet; 42-limiting clamping strips; 43-connecting rod; 44-a compression bar; 45-pinch roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-3, a fire-proof check valve for discharging oil smoke, comprising an air deflector 1 and a check valve body 2 fixedly connected with the air deflector 1 (bolt), wherein the check valve body 2 comprises a housing 21 and a cover plate assembly 3 arranged in an inner cavity of the housing 21, the cover plate assembly 3 comprises a bottom plate 31, a cylindrical air outlet 32 fixed on the bottom plate 31 and a cover plate 33, a bracket 34 is welded and fixed on the bottom plate 31, a connecting plate 331 is correspondingly riveted on the cover plate 33, the connecting plate 331 is rotatably connected with the bracket 34, two side plates 35 are fixed on the bottom plate 31 at two ends of the air outlet 32 on the support 34, inclined slide grooves 351 are formed on the two side plates 35, a fusing mechanism 4 is connected on the bracket 34, the fusing mechanism 4 comprises a pressure lever 44 which is fused at high temperature (higher than 150 ℃) and then glidingly attached to the cover plate 33 along the slide grooves 351, each side plate 35 is further provided with a tension spring 353 which is wound in a V shape, and one end side of the tension spring 353 is connected with a grapple 354 for being hooked at two ends of the pressure lever 44. Through the tension spring 353 that sets up the V type and coil, can independently operate, avoid a single tension spring, performance degradation appears after long-time use again, can't pull down depression bar 44.

Wherein the content of the first and second substances,

as shown in fig. 2, a mounting bar 211 is welded and fixed to the bottom of the housing 21, and bolts penetrating the mounting bar 211 are inserted and fixed to the housing 21.

A sealing ring 332 is sleeved on the periphery of the cover plate 33 to enhance the sealing of the air outlet 32.

With further reference to fig. 3, a supporting column 352 is fixed in the middle of one end of the side plate 35 away from the fusing mechanism 4, and the tension spring 353 is wound in a V shape through the supporting column 352; meanwhile, a through hole is formed in the bottom of the other end of the side plate 35, and the other end side of the tension spring 353 is hooked in the through hole through a grapple 354.

Fuse-link 4 is established including the hook and is connected fuse hook piece 41 on the support 34, be used for restricting the spacing card strip 42 of depression bar 44, be used for connecting rod 43 of fuse hook piece 41 and spacing card strip 42 and be used for the spring of ejecting spacing briquetting 42 after fusing, wherein, two spacing 36 of fixedly connected with between curb plate 35, the one end of connecting rod 43 runs through spacing 36 and with fuse hook piece 41 (the hook is established) is connected, just the other end of connecting rod 43 with spacing card strip 42 (the nut) is connected, the spring sets up and is in compression state between spacing card strip 42 and spacing 36. When the temperature is high, the fusing hook piece 41 is fused, the limiting clamping strip 42 is ejected out under the action of the spring, the pressure lever 44 is further separated from the limiting, the pressure lever 44 is pulled downwards under the action of the tension spring 353, and the cover plate 33 is abutted and covered by the pressure lever 44. Referring to fig. 3 and 4, the limiting strip 36 and the limiting clamping strip 42 are both U-shaped, clamping blocks 361 are arranged at two ends of the limiting strip 36, the clamping blocks 361 are clamped and fixed with the bending pieces on the side plates 35 after being bent, at this time, the springs are arranged in the grooves of the limiting strip, and two ends of the limiting clamping strip 42 are clamped at the outer sides of the limiting strip 36 and the pressing rod 44 respectively.

Further, in order to avoid corrosion of the pressure lever after absorbing oil smoke in the using process, or the oil smoke is absorbed on the surface of the pressure lever, so that the sliding friction force is increased, and the pressure lever 44 slides down to the bottom of the sliding groove 351, sliding wheels 45 are rotatably arranged at two ends of the pressure lever 44, so that the sliding wheels 45 are preferentially and in advance contacted with the cover plate 33 in the pressing process of the pressure lever 44. In addition, the contact surface of the cover plate 33 with the slide wheel 45 is convex.

In the present application, the structures and the connection relations that are not described in detail are all the prior art, and the structures and the principles thereof are known in the prior art and are not described herein again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. The utility model provides an oil extraction flue gas fire prevention check valve, includes the aviation baffle and with aviation baffle fixed connection's check valve main part, the check valve main part includes the shell and installs the apron subassembly in the shell intracavity, the apron subassembly includes the bottom plate, fixes cylindric air outlet and the apron on the bottom plate, its characterized in that: welded fastening has the support on the bottom plate, corresponds be in the riveting has the connecting plate on the apron, the connecting plate with rotate the leg joint the support is in the bottom plate is fixed with both sides board in the both ends of air outlet, two set up the spout of slope on the curb plate be connected with fusing mechanism on the support, fusing mechanism includes high temperature fusing back edge the laminating of spout gliding the depression bar of apron, at each be provided with on the curb plate and be the V type and coil the extension spring that sets up, the one end side of extension spring is connected with the grapple and is used for setting up the hook and connect the depression bar both ends.

2. The range hood fire check valve of claim 1, wherein: the bottom of the shell is fixedly welded with a mounting bar, and the shell is fixed by a bolt penetrating through the mounting bar.

3. The range hood fire check valve of claim 1, wherein: the periphery of the cover plate is sleeved with a sealing ring.

4. The range hood fire check valve of any one of claims 1 to 3, wherein: a support column is fixed in the middle of one end, far away from the fusing mechanism, of the side plate, and the tension spring is coiled in a V shape through the support column; the bottom of the other end of the side plate is provided with a through hole, and the other end side of the tension spring is hooked in the through hole through a grapple.

5. The range hood fire check valve of claim 4, wherein: the fusing mechanism further comprises a fusing hook sheet hooked on the support, a limiting clamping strip used for limiting the pressure rod, a connecting rod used for connecting the fusing hook sheet and the limiting clamping strip, and a spring used for ejecting a limiting pressing block after fusing.

6. The range hood fire check valve of claim 5, wherein: and a limiting strip is fixedly connected between the two side plates, one end of the connecting rod penetrates through the limiting strip and is connected with the fusing hook piece, the other end of the connecting rod is connected with the limiting clamping strip, and the spring is arranged between the limiting clamping strip and the limiting strip and is in a compressed state.

7. The range hood fire check valve of claim 6, wherein: spacing with spacing card strip is the U type to set up the joint piece at the both ends of spacing to the joint piece after buckling with the piece block of buckling on the curb plate is fixed, the spring sets up the inslot at spacing, and the both ends of spacing card strip are blocked respectively and are established in the outside of spacing and depression bar simultaneously.

8. The range hood fire check valve of any one of claims 5 to 7, wherein: sliding wheels are rotatably arranged at the two ends of the pressure lever.

9. The range hood fire check valve of claim 8, wherein: the contact surface of the cover plate and the sliding wheel is convex.

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