CN203857106U

CN203857106U - Fireproof valve for flow-back prevention flue

Info

Publication number: CN203857106U
Application number: CN201420289750.0U
Authority: CN
Inventors: 韩文强
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-03
Filing date: 2014-06-03
Publication date: 2014-10-01
Anticipated expiration: 2024-06-03

Abstract

The utility model discloses a fireproof valve for a flow-back prevention flue. The fireproof valve comprises a flue gas channel formed by a shell. One end of the flue gas channel is provided with an air inlet, the other opposite end is an air outlet end which is provided with an end face. The upper portion of the end face of the air outlet end is located in the flue gas channel. Two air outlets are formed in the end face of the air outlet end. Bosses or grooves facing the outer end face of the air outlet end are arranged around the peripheries of the air outlets. Two rotatable valve pieces are arranged on the outer end face of the air outlet end, wherein the valve pieces correspond to the air outlets and can only be opened in the air outlet direction. The peripheries of the valve pieces are provided with bent edges or convex strips corresponding to the bosses or grooves. A high-temperature closing device is arranged on the outer end face of the air outlet end, wherein the high-temperature closing device enables the valve pieces to be forcibly closed towards the air inlet side under a set temperature. The fireproof valve for the flow-back prevention flue is flexible to open and good in the lampblack discharging effect, the valve pieces in the open state can be forcibly closed under an emergency state that the flue gas temperature is very high in the public flue gas channel, and the flow-back prevention flue fireproof valve is good in the sealing effect.

Description

A kind of reverse-filling fire-proof valve for flue

Technical field

The utility model relates to a kind of fire-proof valve for flue using in the kitchen of public gas flue that uses.

Background technique

In the kitchen of the longitudinal public gas flue of use, in order to prevent that the oil smoke in gas flue from blowing back in kitchen, generally all be provided with the device as check valve for flue giving vent to anger between the mouth of pipe and public gas flue of range hood, in GB GB50096-2011 and JGJ/T 309-2013, all to the non-return regulation of having done of residence discharge feed channel exhaust, but on market, existing safety check is all difficult to adapt to this standard.Existing check valve for flue, generally comprise the flue gas channel being formed by shell, this flue gas channel has relative intake grill and exhaust outlet, on intake grill, connect the mouth of pipe of giving vent to anger of range hood, exhaust outlet extend in public gas flue, at flue gas channel exhaust outlet, place is provided with able to turn on or off valve block, and valve block is that a slice or two are hinged on flue gas channel by valve block rotating shaft, and exhaust outlet side is provided with the high temperature shutoff device that can make valve block positive closing.In the time not using kitchen ventilator, valve block, because self gravitation is in the closed position, covers at air-out oral area; In the time using kitchen ventilator, valve block is in an open position, and valve block is away from exhaust outlet.Due to many public longitudinal public gas flues of user, once unshared housing's breaking out of fire, a large amount of high-temperature harmful gas pours in longitudinal public gas flue, if now close not in time the valve block in check valve for flue, these a large amount of high-temperature harmful gas can enter in the user family that uses kitchen ventilator by the flue gas channel of check valve for flue, thereby threaten the life safety of resident family.But the valve block on existing check valve for flue and air-out oral area are poorly sealed, especially when two valve blocks are hinged by valve block rotating shaft, between valve block and exhaust outlet, can pour in high-temperature harmful gas between valve block and valve block rotating shaft, enter in user family, thereby threaten the life safety of resident family; And use a slice valve block, open and close dumb.

Summary of the invention

The technical problems to be solved in the utility model is to provide and a kind of opens flexibly, good sealing effect, the reverse-filling fire-proof valve for flue that can close by force under the very high state of emergency when flue-gas temperature in public gas flue.

For solving the problems of the technologies described above, the utility model comprises the flue gas channel being made up of shell, flue gas channel one end has intake grill, the other end is outlet air end relatively, its structural feature is that described outlet air end has end face, the end face top of described outlet air end is positioned at flue gas channel, the end face of described outlet air end is provided with two exhaust outlets, the periphery of described exhaust outlet is equipped with boss or the groove of end face outward, on the exterior edge face of described outlet air end, be provided with corresponding with described exhaust outlet, two rotating valve blocks can only opening to air-out direction, described valve block periphery is provided with crimp or the raised line corresponding with described boss or groove, on the exterior edge face of described outlet air end, be provided with and under setting temperature, can make the high temperature shutoff device of valve block to the positive closing of intake grill side.

The end face of described outlet air end is one time punching molded or is structure as a whole or for spicing forming type.

The exterior edge face of the outlet air end between two described exhaust outlets is provided with support, and described valve block is hinged on support.

Described high temperature shutoff device comprises the support on the exterior edge face that is arranged on the outlet air end between two exhaust outlets, support is provided with back shaft, back shaft is provided with valve block compressing tablet and torsion spring, two free-ended ends of torsion spring are connected with two valve block compressing tablet free ends respectively, on support, be provided with the elasticity lock banking stop of two free end lockings of valve block compressing tablet, between support and the free end of elasticity lock banking stop, be provided with the bimetallic strip that can separate under setting temperature, bimetallic strip is welded by the welding consumables that can melt under setting temperature by two tinsels.

The end face top of described outlet air end is positioned at roughly intermediate portion and close intake grill end of flue gas channel length direction.

Two described exhaust outlets are symmetrical set on the end face of outlet air end, and the end face of described outlet air end and two valve block upper ends tilt to intake grill direction.

Be provided with transition connecting cylinder at the end face of outlet air end and being between flue gas channel cylindraceous of being made up of shell, the connecting end of transition connecting cylinder and outlet air end end face has the port being obliquely installed.

Described valve block is provided with counterweight magnet piece or balancing weight.

On described valve block, be provided with stiffening rib or sags and crests corresponding to the position of exhaust outlet.

Adopt after said structure, owing to being provided with outlet air end end face in flue gas channel, on the end face of outlet air end, be provided with two exhaust outlets, the periphery of exhaust outlet is equipped with the boss of end face outward, on the exterior edge face of outlet air end, be provided with corresponding with described exhaust outlet, two rotating valve blocks can only opening to air-out direction, valve block periphery is provided with the crimp corresponding with described boss, under the state of opening at valve block, valve block is haply perpendicular to horizontal plane, valve block is positioned at flue gas channel substantially, open flexibly, cooking-fume discharging is effective, and can not smash valve block or cause valve block open dumb and be not closed completely because foreign matter drops because foreign matter in public gas flue drops, on the exterior edge face of outlet air end, be provided with and under setting temperature, can make the high temperature shutoff device of valve block to the positive closing of intake grill side, when flue-gas temperature in public gas flue is under the very high state of emergency, when in public gas flue, flue-gas temperature reaches the warning temperature of setting, this high temperature shutoff device makes to cut out by force in the valve block of open mode, thereby the life safety of protection resident family, because the periphery of exhaust outlet is equipped with the boss of end face outward, valve block periphery is provided with the crimp corresponding with described boss, good sealing effect.And the end face top of outlet air end is positioned at roughly intermediate portion and close intake grill end of flue gas channel length direction, under guarantee valve block open mode, be substantially positioned under the prerequisite of flue gas channel, can entirety shorten flue gas channel length, thereby not affect the unimpeded of public gas flue.And two exhaust outlets are symmetrical set on the end face of outlet air end, and the end face of outlet air end and two valve block upper ends tilt to intake grill direction, can ensure that two valve blocks rely on himself gravity naturally to close.On two valve blocks, be arranged with counterweight magnet piece, when valve block during in closed condition sealability high, only after air output reaches certain value, valve block is opened; On valve block, be provided with stiffening rib or sags and crests corresponding to the position of exhaust outlet, can increase the intensity of valve block, indeformable in valve block using process.

Brief description of the drawings

Embodiment of the present utility model below in conjunction with accompanying drawing is described in further detail:

Fig. 1 is vertical section structure schematic diagram of the present utility model;

Fig. 2 is the structural representation that Fig. 1 right side is looked;

Fig. 3 is the structural representation that Fig. 1 left side is looked;

Fig. 4 is the A-A cross-sectional view of Fig. 2;

Fig. 5 is another embodiment's of the utility model vertical section structure schematic diagram.

Embodiment

With reference to accompanying drawing, this reverse-filling fire-proof valve for flue comprises the flue gas channel cylindraceous that is being made up of shell 1, this flue gas channel can be variable diameter passage, flue gas channel one end has intake grill 2(that is air intake passage), the other end is outlet air end relatively, outlet air end has one time punching molded end face 4, this end face 4 is also can be with outlet air end into a single integrated structure or be connected by screw with outlet air end, riveted joint, snapping, the spicing forming type such as be spirally connected, the end face 4 of outlet air end is positioned at flue gas channel, in flue gas channel, there is the assembly department that outlet air end end face 4 is installed, on shell 1 outer wall, be provided with mounting disc 8, mounting disc 8 and the flue gas channel one machine shaping that forms intake grill 2, be arranged with snap lock stop member 18 at the rear side of mounting disc 8, the below in mounting disc 8 fronts is provided with leveling instrument 17.When actual fabrication, forming the flue gas channel of intake grill 2 and the end face of outlet air end 4 welds together after machine shaping respectively again, the end face 4 of outlet air end is positioned at roughly intermediate portion and close intake grill end of flue gas channel length direction, on the end face of outlet air end, be provided with two exhaust outlets 5, the periphery of exhaust outlet 5 is equipped with boss or the groove 6 of end face (this exterior edge face is towards the air-out direction of flue gas channel) outward, on the exterior edge face of outlet air end, be provided with corresponding with exhaust outlet 5, two rotating valve blocks 3 can only opening to air-out direction, two exhaust outlets 5 are symmetrical set on the end face of outlet air end, the end face of outlet air end and two valve block 3 upper ends tilt to intake grill 2 directions, preferably the end face top of outlet air end is positioned at flue gas channel, the end face bottom of outlet air end can be positioned at flue gas channel, also outside can flue gas channel.For end face 4 upper ends that make outlet air end tilt to intake grill 2 directions, between flue gas channel cylindraceous, be provided with transition connecting cylinder 19 at the end face 4 of wind end and being of being formed by shell 1, transition connecting cylinder 19 has with the connecting end of the end face 4 of outlet air end the port being obliquely installed, transition connecting cylinder 19 one end (the inner) weld together with the assembly department in flue gas channel, the interior edge face of the other end and outlet air end end face 4 welds together (referring to Fig. 5), and outlet air end end face 4 can be also one time punching molded (referring to Fig. 1) with transition connecting cylinder 19.The exterior edge face of the outlet air end between two exhaust outlets 5 is provided with support 9, valve block 3 is hinged on support 9, can be hinged by hinge 15 and back shaft 14 between valve block 3 and support 9, valve block 3 peripheries are provided with in the crimp corresponding with boss or groove 6 or raised line 16(figure and only show the structural type that boss coordinates with crimp), the boss of exhaust outlet 5 peripheries or groove 6 are one time punching molded with the end face 4 of outlet air end, the crimp of valve block 3 peripheries or raised line 16 are also one time punching molded with valve block 3, in the time that valve block 3 peripheries are raised line shape, on valve block 3, the another side relative with raised line 16 is groove shape, raised line 16 can also be the bar that is welded on valve block 3 peripheries, under the state of closing at valve block, boss or groove 6 corresponding matching of the crimp of valve block 3 peripheries or raised line 16 and exhaust outlet 5 peripheries, also can be groove 6 corresponding matching of raised line 16 with exhaust outlet 5 peripheries of valve block 3 peripheries, in order to increase the intensity of valve block 3, on valve block 3, be provided with stiffening rib or sags and crests corresponding to the position of exhaust outlet 5, crimp or the raised line 16 of this stiffening rib or sags and crests and valve block 3 peripheries are one time punching molded.Under the state of opening at valve block, valve block is haply perpendicular to horizontal plane, two valve blocks 3 are generally symmetrical arranged along its vertical center line, valve block 3 has closes and opens two working positions, valve block is by rotating exhaust outlet 5 exterior edge faces that are arranged on flue gas channel of back shaft, two valve blocks 3 can share a back shaft, also can be that every valve block 3 has a back shaft, on two valve blocks 3, be arranged with counterweight magnet piece 7, counterweight magnet piece 7 can be balancing weight, and two valve blocks 3 also can directly be hinged on the end face of two outlet air ends between exhaust outlet 5.

On the exterior edge face of outlet air end, be provided with and under setting temperature, can make the high temperature shutoff device of valve block 3 to intake grill 2 side positive closings, this high temperature shutoff device comprises the support 9 on the exterior edge face that is arranged on the outlet air end between two exhaust outlets 5, high temperature shutoff device can share a support with two valve blocks 3, also can use separately independently support, support 9 is provided with back shaft 14, back shaft 14 is provided with valve block compressing tablet 12 and torsion spring 13, two free-ended ends of torsion spring are connected with two valve block compressing tablet 12 free ends respectively, on support 9, be provided with the elasticity lock banking stop 11 of two free end lockings of valve block compressing tablet 12, elasticity lock banking stop 11 is arranged on by screw on the crossbearer of support 9, the two free-ended tops of valve block compressing tablet 12 have the end face of relative excurvation, two free end ends of two valve block compressing tablets 12 have the bent angle of relative excurvation, two free end end end faces of valve block compressing tablet 12 are provided with locking mouthful, two valve block compressing tablets 12 at its two free ends end end face of lock state at grade, elasticity lock banking stop 11 terminations are opening-like, elasticity lock banking stop 11 free ends are had and aforementioned locking mouthful two corresponding terminations, thereby locking two valve block compressing tablets 12.Between support 9 and the free end of elasticity lock banking stop 11, be provided with the bimetallic strip 10 that can separate under setting temperature, bimetallic strip 10 is welded by the welding consumables that can melt under setting temperature by two tinsels, the preferred scolding tin of welding consumables.Wherein a slice in bimetallic strip 10 is arranged on by screw on the crossbearer of the support parallel with the end face 4 of outlet air end 9, another sheet is welded on this sheet by the welding consumables that can melt, and the free end of bimetallic strip 10 contacts with the free end of elasticity lock banking stop 11.In the time that flue-gas temperature in public gas flue reaches the warning temperature of setting, melts soldering tin between bimetallic strip 10, wherein a slice comes off from another sheet, elasticity lock banking stop 11 departs from the constraint of bimetallic strip 10, elasticity lock banking stop 11 free ends are upspring, two free ends of valve block compressing tablet 12 depart from the constraint of elasticity lock banking stop 11, and two free end elasticity of valve block compressing tablet 12 make to close to intake grill 2 directions in two valve blocks 3 of open mode after launching by force.Above-mentioned high temperature shutoff device is only as optimal way of the present utility model, but the structure of high temperature shutoff device is not limited to said structure form, it can also be the structure of any known, as the structure in China Patent No. 201120423486.1, it can be also the structure in China Patent No. 201320290382.7.Exhaust outlet 5 can also be multiple, as three or four, in the time that exhaust outlet 5 is three or four, corresponding valve block 3 is also three or four, on valve block compressing tablet 12 in high temperature shutoff device, be provided with point pawl corresponding with valve block 3 quantity, all these change the replacement that all belongs to equivalent technologies means.

The concrete structure of above-described embodiment is for the utility model is described, but not to restriction of the present utility model, all improvement on the utility model basis, all should fall into protection domain of the present utility model.

Claims

1. a reverse-filling fire-proof valve for flue, comprise the flue gas channel being formed by shell (1), flue gas channel one end has intake grill (2), the other end is outlet air end relatively, it is characterized in that described outlet air end has end face (4), end face (4) top of described outlet air end is positioned at flue gas channel, the end face (4) of described outlet air end is provided with two exhaust outlets (5), the periphery of described exhaust outlet (5) is equipped with boss or the groove (6) of end face outward, on the exterior edge face of described outlet air end, be provided with corresponding with described exhaust outlet (5), the two rotating valve blocks (3) that can only open to air-out direction, described valve block (3) periphery is provided with the crimp corresponding with described boss or groove (6) or raised line (16), on the exterior edge face of described outlet air end, be provided with and under setting temperature, can make the high temperature shutoff device of valve block (3) to intake grill (2) side positive closing.

2. reverse-filling fire-proof valve for flue according to claim 1, is characterized in that the end face (4) of described outlet air end is for one time punching molded.

3. reverse-filling fire-proof valve for flue according to claim 1, is characterized in that the end face (4) of described outlet air end is structure as a whole or/and be spicing forming type.

4. reverse-filling fire-proof valve for flue according to claim 1, is characterized in that the exterior edge face of the outlet air end between described two exhaust outlets (5) is provided with support (9), and described valve block (3) is hinged on support (9).

5. reverse-filling fire-proof valve for flue according to claim 1, it is characterized in that described high temperature shutoff device comprises the support (9) on the exterior edge face that is arranged on the outlet air end between two exhaust outlets (5), support (9) is provided with back shaft (14), back shaft (14) is provided with valve block compressing tablet (12) and torsion spring (13), two free-ended ends of torsion spring are connected with two valve block compressing tablet (12) free ends respectively, on support (9), be provided with the elasticity lock banking stop (11) of two free end lockings of valve block compressing tablet (12), between support (9) and the free end of elasticity lock banking stop (11), be provided with the bimetallic strip (10) that can separate under setting temperature, bimetallic strip (10) is welded by the welding consumables that can melt under setting temperature by two tinsels.

6. according to the reverse-filling fire-proof valve for flue described in claim 1-5 any one, it is characterized in that end face (4) top of described outlet air end is positioned at roughly intermediate portion and close intake grill end of flue gas channel length direction.

7. according to the reverse-filling fire-proof valve for flue described in claim 1-5 any one, it is characterized in that described two exhaust outlets (5) are symmetrical set on the end face of outlet air end, the end face of described outlet air end and two valve blocks (3) upper end tilt to intake grill (2) direction.

8. according to the reverse-filling fire-proof valve for flue described in claim 1 or 3 or 4 or 5 any one, it is characterized in that end face (4) at outlet air end and being between flue gas channel cylindraceous of being made up of shell (1) is provided with transition connecting cylinder (19), transition connecting cylinder (19) has with the connecting end of outlet air end end face (4) port being obliquely installed.

9. according to the reverse-filling fire-proof valve for flue described in claim 1-5 any one, it is characterized in that described valve block (3) is provided with counterweight magnet piece (7) or balancing weight.

10. according to the reverse-filling fire-proof valve for flue described in claim 1-5 any one, it is characterized in that described valve block (3) is above provided with stiffening rib or sags and crests corresponding to the position of exhaust outlet (5).