CN110617355A

CN110617355A - Flue fire damper and flue system with same

Info

Publication number: CN110617355A
Application number: CN201910826553.5A
Authority: CN
Inventors: 韩青; 徐常华; 韩文强
Original assignee: Shandong Zhongke Henderson Building Materials Co Ltd
Current assignee: Shandong Zhongke Henderson Building Materials Co Ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2019-12-27

Abstract

The invention discloses a flue fire damper and a flue system with the same, and the flue fire damper comprises a flue channel formed by a shell, wherein an installation disc is arranged on the outer wall of the shell, one end of the flue channel is provided with an air inlet, the other end of the flue channel is an air outlet end, a rotatable valve plate which can only be opened towards the air outlet direction is arranged in the flue channel or on the end surface of the air outlet end, a flow guide cover is arranged on the inner side of the installation disc, a flue locking piece capable of fixing the flue locking piece on a flue is arranged on the installation disc, hook head grooves for installing the flue locking piece are arranged on the left side and the right side of the flow. The flue fire damper is convenient to install and fix on a public flue, and the hook piece of the flue locking piece is pulled to swing through the locking bolt, so that the hook piece is clamped on the inner wall of the flue.

Description

Flue fire damper and flue system with same

Technical Field

The invention relates to a flue fire damper used in a kitchen using a public flue and a flue system with the same.

Background

In the kitchen that uses vertical public flue, in order to prevent the oil smoke among the flue from flowing back into the kitchen in, generally all set up such device as flue fire damper between smoke ventilator's the mouth of pipe of giving vent to anger and public flue, current flue fire damper, generally include the flue that comprises the shell, this flue has relative air intake and air outlet, the mouth of pipe of giving vent to anger of connecting smoke ventilator on the air intake, the air outlet stretches into in the public flue, be provided with the valve block that can open and close at flue air outlet department, the valve block is articulated on the flue for a slice or two through the valve block pivot, the air outlet side is provided with the high temperature closing device that enables the valve block and force to close. When the range hood is not used, the valve plate is in a closed position due to the gravity of the valve plate and covers the air outlet part; when the range hood is used, the valve plate is in the opening position, and the valve plate is far away from the air outlet. The existing flue fire damper is generally characterized in that an elastic clamp or an elastic sheet is arranged on a shell on one side, facing an air outlet, of a shell, and the flue fire damper is clamped on an air inlet of a flue through the elastic clamp or the elastic sheet, so that the flue fire damper is not tightly attached to the wall surface of the flue and is easy to loosen, and the ventilation phenomenon occurs at the joint of the flue fire damper and the air inlet of the flue; the wall surface of the flue gas channel is perforated, and the flue fire damper is arranged on an air inlet of the flue gas channel through screws, so that the ceramic tiles on the wall surface of the flue gas channel are easily damaged and cracked or cracked; the above modes all have the defects of inconvenient installation and replacement of the flue fire damper.

Meanwhile, as a plurality of users share one longitudinal public flue gas channel, once a fire disaster happens to one user, a large amount of high-temperature harmful gas flows into the longitudinal public flue gas channel, and if a valve plate in a flue fire damper is not closed in time, the large amount of high-temperature harmful gas can enter the user using the range hood through the flue gas channel of the flue fire damper, so that the life safety of the user is threatened. The outer end face of an air outlet end of an existing flue fire damper is provided with a high-temperature closing device capable of enabling a valve block to be forcibly closed towards an air inlet side at a set temperature, and when the temperature of smoke in a public flue is in a very high emergency state and the temperature of the smoke in the public flue reaches a set warning temperature, the valve block in an open state is forcibly closed by the high-temperature closing device. But the high temperature closing means on the current flue fire prevention valve all adopts the strength of spring to close the valve block, lasts high temperature to the certain time in public flue gas channel, and the spring loses because of high temperature inefficacy, and the valve block loses the restrictive force of spring, can be opened once more, and high temperature harmful gas can be gushed into user's family to threaten resident family's life safety.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a flue fire damper which is convenient to install and fix on a public flue, meanwhile, the flue fire damper can be forcibly closed when the flue gas temperature in the public flue is in a very high emergency state, and a valve plate of the fire damper is always in a closed state; the invention also provides a flue system with the flue fire damper.

In order to solve the technical problem, the smoke exhaust device comprises a smoke passage formed by a shell, wherein an installation disc is arranged on the outer wall of the shell, one end of the smoke passage is provided with an air inlet, the other end of the smoke passage is an air outlet end, a rotatable valve block which can only be opened towards the air outlet direction is arranged in the smoke passage or on the end surface of the air outlet end, and a flow guide cover is arranged on the inner side of the installation disc.

The flue locking piece include a base, be equipped with the screw hole on the base, base one side is equipped with the hook piece, is equipped with the spacing sleeve that corresponds with the locking bolt hole of wearing at the mounting disc inboard, the bolt is worn out from locking bolt hole and spacing sleeve and is connected with base threaded connection, the hook piece is relative overhanging in the eave tile groove.

The projection of the base on the horizontal plane is approximately square, two opposite angles are arc surfaces which are concentric with the threaded hole, the other two opposite angles are right-angle surfaces, the two opposite arc surfaces form a rotating surface of the flue locking piece, and the two opposite right-angle surfaces form a stopping surface of the flue locking piece.

The lower side of the hook head groove is provided with a support lug which has a limiting effect on the rotating surface and the stopping surface of the flue locking piece, and the support lug is approximately in a horizontal state.

The outer end of the hook is provided with a raised hook head facing the mounting disc.

The flue locking piece comprises a hook piece, one end of the hook piece is provided with a support lug extending along two opposite wall surfaces of the hook piece, a support is hinged between the two support lugs through a pin shaft, a threaded hole is formed in the free end of the support, a bolt penetrates out of the locking bolt penetrating hole to be in threaded connection with the support, a spring is sleeved on a bolt section between the inner wall of the mounting disc and the hook piece, and the hook piece extends outwards relatively from the hook head groove.

The opposite wall surface of the hook is provided with an arc-shaped convex part which is matched with the spring.

The end face is provided with a high-temperature closing device which can enable the valve plate to be forcibly closed towards the air inlet side at a set temperature and is provided with a locking mechanism, so that the valve plate is always in a closed state.

The high-temperature closing device with the locking mechanism comprises a support installed on the outer end face of the end face, a support shaft is arranged on the support, a lock pressure plate is sleeved on the support shaft, a pressure plate pressure spring is sleeved on the support shaft, a hot melt sheet or a separated bimetallic sheet which can be melted at a set temperature and extends to the lock pressure plate is arranged at the position of the support, and the pressure strip lock pressure plate and the hot melt sheet or the bimetallic sheet are interlocked.

The valve block pressing device is characterized in that one end, close to a valve block, of the supporting shaft is hinged with a valve block pressing strip, the locking pressing plate and the valve block pressing strip are correspondingly arranged, a sinking groove is formed in one end, facing the pressing plate pressing spring, of the locking pressing plate, a clamping hook is arranged on the valve block pressing strip, the locking pressing plate is separated from a bimetallic strip and presses the valve block pressing strip, and a mechanism for locking the locking pressing plate and the valve block pressing strip mutually is arranged between the locking pressing plate and the valve block.

The mutual locking mechanism is that the valve plate pressing strip is opened and then is in a wedge shape at the hinged end, the corresponding ends of the locking pressure plate and the valve plate pressing strip are provided with conical cavities, and the hinged end is in a wedge shape and forms wedge-shaped locking with the valve plate pressing strip with the conical cavities.

The high temperature closing device with locking mechanical system including installing the support on the outer terminal surface of terminal surface, be equipped with the back shaft on the support, the one end that the back shaft is close to the valve block articulates there is the valve block layering, the cover on the back shaft be equipped with the lock pressure disk that the valve block layering corresponds, suit pressure disk pressure spring on the back shaft, the support position is equipped with the bimetallic strip that can melt or separate under the settlement temperature to stretching to the lock pressure disk, interlocking between pressure strip lock pressure disk and the bimetallic strip is equipped with the valve block layering guide way of inside setting along the relative outside of lock pressure disk, valve block layering guide way inboard is equipped with the draw-in groove, be equipped with the trip of buckle in the draw-in groove on.

The end face is provided with two air outlets which are arranged on the end face of the air outlet end in a bilateral symmetry mode, and the end face of the air outlet end and the upper ends of the two valve plates incline towards the air inlet direction.

The end face is provided with an air outlet, the valve block is one piece, and one side of the valve block is hinged to the end face.

And the valve plate is hinged on the end surface of the left side or the right side of the air outlet.

The valve plate is hinged on the end face of the upper side or the lower side of the air outlet.

The end face is provided with an air outlet, the valve plate on the air outlet is divided into a large part and a small part, wherein the smaller part of the valve plate is fixed on the air outlet, and the larger part of the valve plate is hinged on the smaller part of the valve plate.

The flue system comprises a public flue, wherein a fire damper mounting hole is formed in a set part of the public flue; the flue fire damper is arranged in the fire damper mounting opening.

After the structure is adopted, the installation disc is provided with the flue locking piece for fixing the installation disc on the flue, so that the flue fire damper is convenient to install and fix on the public flue; the hook member is pulled to swing through the locking bolt, so that the hook member is clamped on the inner wall of the flue gas channel, and the structure is stable, and the hook member is convenient to mount, fix and replace. And the end face is provided with a high-temperature closing device which can forcibly close the valve plate to the air inlet side at a set temperature and is provided with a locking mechanism, when the temperature of the flue gas in the public flue gas channel is in a very high emergency state and reaches a set warning temperature, the valve plate in the open state is forcibly closed by the high-temperature closing device, and the valve plate of the fire-proof valve is always in a locking closed state, so that the life safety of residents is protected. The air outlet end of the flue gas channel is provided with the guide cover with the consistent flue gas flow direction, so that the flue gas discharge direction is consistent with the flue gas flow direction, and the smoothness of the public flue gas channel is not influenced. The two air outlets are symmetrically arranged on the left side and the right side of the end face of the air outlet end, the end face of the air outlet end and the upper ends of the two valve plates incline towards the air inlet direction, and the two valve plates can be guaranteed to be naturally closed by means of self gravity.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

FIG. 1 is a schematic structural view of a flue system having a flue damper;

FIG. 2 is a schematic diagram of the structure of the fire damper of the flue shown in FIG. 1;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2;

FIG. 4 is a schematic longitudinal sectional view of another embodiment of the present invention;

FIG. 5 is a schematic structural view of an embodiment of the high temperature shutdown device of the present invention;

FIG. 6 is a schematic view of the cross-sectional structure B-B of FIG. 5;

FIG. 7 is a state diagram of the valve plate bead of FIG. 6 shown in an open position;

FIG. 8 is a schematic structural view of another embodiment of the high temperature shutdown device of the present invention;

FIG. 9 is a schematic view of the cross-sectional structure C-C of FIG. 8;

FIG. 10 is a schematic view of the lock platen of FIG. 8;

FIG. 11 is a schematic view of a stack lock;

FIG. 12 is a schematic top view of FIG. 11;

FIG. 13 is a schematic view of the structure of the usage state of the flue locking member;

FIG. 14 is a schematic view of an alternative construction of a flue lock;

fig. 15 is a structural view of the hook of fig. 14 viewed from below;

FIG. 16 is another schematic illustration of the fire damper of FIG. 1 viewed from the right;

FIG. 17 is a schematic view of a further construction of the fire damper of the flue of FIG. 1 as viewed from the right;

FIG. 18 is a schematic view of another construction of the flue damper of FIG. 1 viewed from the right.

Detailed Description

Referring to the attached drawings, the flue system with the flue fire damper comprises a public flue gas channel 31, referring to fig. 1, a fire damper mounting port 32 is formed in a set part of the public flue gas channel, the fire damper mounting port 32 is generally formed in the surface wall of the public flue gas channel close to one side of a range hood, the flue fire damper is mounted in the fire damper mounting port 32, a mounting disc 26 of the flue fire damper is attached to the surface wall of the public flue gas channel, an air outlet of the flue fire damper is located in the public flue gas channel, and an air inlet of the fire damper is located on the outer side of the public flue gas channel. The flue fire damper may be mounted and secured within the fire damper mounting opening 32 by a flue lock in the embodiments described below, or may be mounted and secured within the fire damper mounting opening 32 by any known means.

The fire damper shown in fig. 1-3 comprises a flue gas channel formed by a housing 1, the flue gas channel is cylindrical, one end of the flue gas channel is provided with an air inlet 2, the other end of the flue gas channel is an air outlet end, the air outlet end is provided with an end face 3 adapted to the flue gas channel, the end face 3 is provided with an air outlet 5, and the end face 3 is provided with a rotatable valve plate 4 which corresponds to the air outlet 5 and can only be opened towards the air outlet direction. The outer wall of the shell 1 is provided with a mounting disc 26, the mounting disc 26 and the flue gas channel forming the air inlet 2 are integrally processed and formed, or the mounting disc 26 and the flue gas channel can be respectively processed and formed and then fixedly connected together, and the end face 3 is fixedly connected with the mounting disc 26 after being subjected to punch forming. The end face of the air outlet end is provided with two air outlets 5, the periphery of each air outlet 5 is annularly provided with a boss or a groove facing the outer end face (the outer end face faces the air outlet direction of the flue gas channel), the outer end face of the air outlet end is provided with two rotatable valve plates 4 which correspond to the air outlets 5 and can only be opened towards the air outlet direction, the two air outlets 5 are arranged on the end face of the air outlet end in a bilateral symmetry mode, the end face of the air outlet end and the upper ends of the two valve plates 4 incline towards the air inlet 2, and the periphery of each valve plate 4 is provided with a bent edge or a raised line corresponding to the. The mounting plate 26 is provided with a flue locking member 21 for securing it to the flue so as to facilitate the mounting and securing of the flue fire damper to the common flue. The air guide sleeve 20 with the consistent flue airflow direction is arranged at the air outlet end of the flue gas channel, the air guide sleeve 20 is arranged on the inner side of the mounting disc 26, the cross section of the air guide sleeve 20 is approximately U-shaped, hook head grooves 211 for mounting flue locking pieces 21 are formed in the left side and the right side of the air guide sleeve 20, supporting lugs 212 are arranged on the lower sides of the hook head grooves 211 and are formed by stamping along the edges of the hook head grooves 211, the supporting lugs 212 are close to the inner side of the mounting disc 26, in use, the supporting lugs 212 are in a horizontal state and play a limiting role in limiting rotating parts of the flue locking pieces 21, the planes of the supporting lugs 212 are approximately perpendicular to the plane of the mounting disc 26, the plane of the supporting lugs 212 is approximately perpendicular to the plane of the side wall of the air guide sleeve 20 on the side of the supporting lugs, locking bolt penetrating holes are. The air guide sleeve 20 is arranged to ensure that the exhaust direction of the flue gas is consistent with the airflow direction of the flue, so that the smoothness of a public flue gas channel is not influenced. The end face 3 is provided with a high-temperature closing device which can forcibly close the valve plate 4 to the air inlet 2 side at a set temperature and is provided with a locking mechanism, so that the valve plate 4 is always in a closed state.

Referring to fig. 4, the flue fire damper with another structure includes a cylindrical flue gas channel formed by the housing 1, the flue gas channel may be a diameter-variable channel, the flue gas channel has an air inlet 2 and an air outlet (i.e. an air inlet channel and an air outlet channel) opposite to each other, the outer wall of the housing 1 is provided with a mounting plate 26, and for convenience of mounting and fixing, the mounting plate 26 is generally square. A flue locking member 21 is provided on the mounting plate 26 to secure it to the flue to facilitate mounting and securing of the flue damper to the common flue. The inner side of the mounting disc 26 is provided with a guide cover 20 with consistent flue airflow direction, the cross section of the guide cover 20 is approximately U-shaped, the left side and the right side of the guide cover 20 are provided with hook grooves for mounting flue locking pieces 21, the mounting disc 26 is provided with locking bolt penetrating holes, and the locking bolt penetrating holes are arranged corresponding to the hook grooves. The smoke exhaust ventilator is characterized in that valve plates 4 are arranged in a smoke channel, the valve plates 4 are two oppositely arranged, the two valve plates 4 are generally symmetrically arranged along the longitudinal central line of the two valve plates, the valve plates 4 have two working positions for closing and opening, a blocking body which enables the two valve plates to be opened only towards the air outlet direction is arranged at one end, close to an air inlet 2, in the smoke channel, valve plate rotating shafts 23 are respectively arranged at two longitudinal ends of the two valve plates 4, rotating shaft seats 24 are correspondingly arranged in the smoke channel, the rotating shaft seats 24 can be fixed on the inner wall of the smoke channel and can also be fixed on the blocking body, valve plate opening limiting devices are arranged on the rotating shaft seats 24 towards the air outlet direction, and the limiting devices can. The blocking body can be an annular body arranged on the inner wall of the smoke channel, and the blocking body can also be a boss arranged on the inner wall of the oil smoke channel or salient points arranged at annular intervals along the inner wall of the smoke channel. The connecting strip 22 which is arranged in the smoke channel and is close to the side of the air inlet 2 and divides the air inlet 2 into two parts is arranged longitudinally, the connecting strip 22 and the blocking body can be arranged integrally, namely, the two longitudinal ends of the connecting strip 22 are respectively connected to the inner edge of the blocking body, or the connecting strip 22 and the blocking body are respectively connected to the inner wall of the smoke channel, and the connecting strip 22 and the blocking body are tightly attached together. The valve block rotating shaft is close to the connecting strip 22, and the valve block rotating shaft is located on the inner side of the side face where the connecting strip 22 faces the air outlet side, so that the two valve blocks 4 can only be opened towards the air outlet direction, firstly, the blocking body is arranged to enable the two valve blocks to be opened towards the air outlet direction, secondly, the periphery of the valve blocks is convenient to attach and relatively keep sealed, the valve block rotating shaft is close to the connecting strip 22, the periphery of the valve blocks is convenient to attach to the blocking body and relatively keep sealed, and meanwhile, each connecting part is compact in structure and flexible to open and close.

The flue locking piece 21 shown in fig. 11-13 comprises a base 103, a through threaded hole 102 is formed in the base 103, a hook 101 is arranged on one side of the base 103, the hook 101 is a plate body, the axis of the hook 101 is on the same plane as that of the threaded hole 102, a raised hook head is arranged at one end of the hook 101, a bolt 104 is arranged in the threaded hole 102, a limiting sleeve 107 is sleeved on the bolt 104, when the flue locking piece is used, the limiting sleeve 107 is fixed in a bolt penetrating hole in the inner side of the mounting disc 26, and part of the limiting sleeve 107 extends into a hook head groove 211. The projection of the base 103 on the horizontal plane is approximately square, wherein two opposite corners are provided with arc surfaces 106 concentric with the threaded hole 102, the other two opposite corners are right-angle surfaces 105, the two opposite arc surfaces 106 form a rotating surface of the flue locking piece 21, the two opposite right-angle surfaces 105 form a stopping surface of the flue locking piece 21, referring to fig. 12, the hook piece 101 is positioned on one side of the base 103, the center line of the projection of the hook piece 101 on the horizontal plane is intersected with the axis of the threaded hole 102, the arc surface 106 of the base 103 is positioned on one side of the hook piece 101, the right-angle surface 105 of the base 103 is positioned on the other side of the hook piece 101, and the circumference of the arc surface 106 on the base 103 far away from the hook piece 101 is larger than. When the flue locking piece is assembled on the fireproof valve, the limiting sleeve 107 is specified at a locking bolt penetrating hole of the mounting disc 26 positioned on the inner side of the mounting disc 26, the fixing mode can be welding or riveting, the length of the limiting sleeve 107 is matched with the wall thickness of a public flue, the bolt 104 penetrates out of the locking bolt penetrating hole and the limiting sleeve 107 from the outer side of the mounting disc 26 and is connected into the threaded hole 102 on the base 103, at the moment, the base 103 is positioned in the hook head grooves 211 on the left side and the right side of the guide cover 20, the hook piece 101 extends outwards relatively, namely, the two flue locking pieces 21 are symmetrically arranged on the fireproof valve, the protruding hook head at the end part of the hook piece 101 faces the mounting disc 26, and the protruding hook head at the end part of the piece 101 presses the inner wall of the public flue to realize the integral installation. The stop surface forming the flue lock 21 provides the flue lock 21 with two fixed positions, one being when the flue fire damper is not mounted on a common flue, the hook 101 of the flue locking piece 21 is approximately vertical, the hook 101 abuts against the outer wall of the air guide sleeve 20 after the bolt 104 is tightened, the right-angle surface 105 on the base 103 on the opposite side of the hook 101 abuts against the lug 212 on the lower side of the hook groove 211, secondly, when the flue fire damper is installed on a public flue, the hook member 101 of the flue locking member 21 is approximately in a horizontal state, the protruding hook head at the end part of the hook member 101 presses the inner wall of the public flue after the bolt 104 is screwed down, and at the moment, two right-angle surfaces 105 on the base 103 parallel to the hook member 101 are attached to the support lug 212 at the lower side of the hook head groove 211 and the top edge of the hook head groove 211, so that the hook member 101 is approximately kept in a horizontal state while the flue locking member 21 is prevented from continuously rotating. And the two arc surfaces 106 which are oppositely arranged and form the rotating surface of the flue locking piece 21 are rotatably matched with the top edge of the hook groove 211 and the support lug 212 on the lower side of the hook groove 211 when the state of the flue locking piece 21 changes.

Another flue locking member shown in fig. 14 and 15 comprises a hook 101, the hook 101 is long and has a U-shaped cross section, one end of the hook 101 is provided with a support lug extending along two opposite wall surfaces of the hook 101, the support lug and the hook 101 are integrally formed by punching to remove the U-shaped bottom surface of the hook 101, a support 109 is hinged between the two support lugs through a pin 110, the longitudinal section of the support 109 is in a corner shape, the free end of the support 109 is provided with a plane approximately parallel to the top surface of the hook 101, the free end of the support 109 is provided with a threaded hole 102, a bolt 104 is arranged in the threaded hole 102, the bolt 104 is sleeved with a spring 108, and the opposite wall surface of the hook 101 is provided with an arc-shaped outer convex part 111 corresponding to. When the flue locking piece is assembled on the fire damper, the bolt 104 penetrates out of the locking bolt penetrating hole from the outer side of the mounting disc 26 and is connected in the threaded hole 102 at the free end of the support 109, at the moment, the support 109 is positioned in the hook head grooves 211 at the left side and the right side of the guide cover 20, the hook 101 extends outwards relatively, the spring 108 is sleeved on a bolt section between the inner wall of the mounting disc 26 and the U-shaped bottom wall of the hook 101, the length of the spring 108 is matched with the wall thickness of the public flue, and the end of the part 101 presses the inner wall of the public flue by screwing the bolt 104 to realize the integral installation and fixation of the flue fire damper.

One specific structure of the high-temperature closing device with the locking mechanism is as follows: comprises a support 6 arranged on the outer end face of an end face 3, a support shaft 7 is arranged on the support 6, a thread section is arranged at one end of the support shaft 7, a notch is formed in one end of the support shaft 7 close to a valve plate 4, a valve plate pressing strip 14 is hinged in the notch through a hinge shaft 13, the valve plate pressing strips 14 are two branches symmetrically arranged along the support shaft 7, the two valve plate pressing strips 14 are respectively arranged corresponding to the two valve plates 4, a locking pressing disc 11 corresponding to the valve plate pressing strip 14 is sleeved on the support shaft 7, the supporting shaft 7 is sleeved with a pressure plate pressure spring 9, the position of the bracket 6 is provided with a bimetallic strip 8 which extends to the lock pressure plate 11 and can be separated at a set temperature, the bimetallic strip 8 is formed by welding two metal strips through welding materials which can be melted at the set temperature, or a bolt or a card made of hot melting materials which can be melted at the set temperature is inserted together, and the bimetallic strip 8 can also be replaced by the hot melting strip which can be melted at the set temperature. The locking pressure plate 11 is provided with a claw 16 which extends to the bimetallic strip 8 and is clamped on the bimetallic strip 8, the bimetallic strip 8 is provided with a clamping hole corresponding to the claw 16, or the bimetallic strip 8 is provided with a claw which extends to the pressing strip locking pressure plate 11 and is clamped on the pressing strip locking pressure plate 11, and the pressing strip locking pressure plate 11 is provided with a clamping hole corresponding to the claw, so that the pressing strip locking pressure plate 11 and the bimetallic strip 8 form a mutual locking relation. In this embodiment, be equipped with the back shaft mounting hole on the support 6, bimetallic strip 8 is the turning arm form, is equipped with the mounting hole that corresponds with the back shaft mounting hole on the support 6 on one of them turning arm, and bimetallic strip 8 suit is on back shaft 7, and back shaft 7 passes through the nut to be fixed on support 6, and of course, bimetallic strip 8 can the direct mount on support 6. One end of the locking pressure plate 11, which faces the pressure plate pressure spring 9, is provided with a sunken groove 17, a clamping hook 15 which is clamped in the sunken groove 17 is arranged on the valve plate trim strip 14, the locking pressure plate 11 is separated from the bimetallic strip 8 and pressed towards the valve plate trim strip 14, a mutual locking mechanism is arranged between the locking pressure plate 11 and the valve plate trim strip 14, the mutual locking mechanism is that the valve plate trim strip 14 is opened and then is in a wedge shape at the hinged end, the corresponding ends of the locking pressure plate 11 and the valve plate trim strip 14 are provided with conical cavities 12, and the hinged end is in a wedge shape, so that the valve plate trim strip 14 and the valve plate trim strip 14 with the conical. Referring to fig. 6 and 7, the valve plate beads 14 are crank-shaped, the locking plate 11 is substantially cylindrical, the two valve plate beads 14 are symmetrically arranged on the outer sides of the locking plate 11, when the two valve plate beads 14 are in a locking state, the hooks 15 (located on the opposite inner sides of the valve plate beads 14 at this time) arranged on the valve plate beads 14 are buckled in the sinking grooves 17 of the locking plate 11, and one crank arm of each of the two valve plate beads 14 is axially parallel to the support shaft 7; after the two valve pressing strips 14 are opened, the opposite outer side faces of the two valve pressing strips 14 form an included angle at the hinged end, the inner cone angle of the conical cavity 12 of the locking pressing disc 11 is consistent with the included angle formed by the two valve pressing strips 14, and wedge-shaped locking is formed between the inner cone surface of the conical cavity 12 of the locking pressing disc 11 and the opposite outer side faces of the two valve pressing strips 14. When the temperature of the smoke in the public smoke channel reaches the set warning temperature, the soldering tin between the bimetallic strips 8 is melted, one of the bimetallic strips falls off from the other bimetallic strip, the locking pressing disc 11 is separated from the constraint of the bimetallic strips 8 and slides along the supporting shaft 7 under the action of the pressing disc compression spring 9, at the moment, the clamping hook 15 on the valve plate pressing strip 14 is separated from the sinking groove 17 of the locking pressing disc 11, the locking pressing disc 11 presses the two valve plate pressing strips 14, the two valve plate pressing strips 14 are outwards opened and pressed on the two valve plates 4, and the valve plates 4 are always in a closed state due to the wedge-shaped locking formed between the valve plate pressing strips 14 and the locking pressing disc 11 with the.

In the foregoing embodiment, the flue fire damper has the air outlet end face adapted to the flue gas channel, the end face is provided with two air outlets, and the end face is provided with the rotatable valve plate corresponding to the air outlets and capable of being opened only in the air outlet direction. A high temperature closing device for force close valve block is the double-legged structure shown in fig. 5, and during practical application, because flue fire prevention valve structure itself has the variety, if: the valve block sets up in the flue gas passageway of fire prevention valve, the flue gas passageway can also be the reducing channel, the valve block can be two, also can be a slice, the opening direction of valve block can be run from opposite directions, the side is opened, go up and open, etc., for the compulsory closing of the flue fire prevention valve block that adapts to different structures, its high temperature closing device who is used for compulsorily closing the valve block can also adopt single leg structure, be about to remove the left leg or the right leg of support 6 in figure 5, only keep a landing leg, be convenient for install this high temperature closing device in the corresponding position of flue fire prevention valve, if install on air-out end terminal surface through the stabilizer blade that the tip of landing leg was rolled over outward, or install on the mounting disc of flue fire prevention valve and install on the. The high-temperature closing device for forcibly closing the valve plate can be that a support shaft 7 is arranged on a support 6, a lock pressing plate 11 is sleeved on the support shaft 7, a pressing plate pressure spring 9 is sleeved on the support shaft 7 between the lock pressing plate 11 and the support 6, a bimetallic strip 8 which extends to the lock pressing plate 11 and can be melted or separated at a set temperature is arranged on the support 6, a clamping claw 16 which extends to the bimetallic strip 8 and is clamped on the bimetallic strip 8 is arranged on the lock pressing plate 11, a clamping hole corresponding to the clamping claw 16 is arranged on the bimetallic strip 8, when the temperature of smoke in a common smoke channel reaches a set warning temperature, soldering tin between the bimetallic strips is melted, one of the bimetallic strips falls off from the other bimetallic strip, the lock pressing plate 11 is separated from the constraint of the bimetallic strip, slides along the support shaft 7 under the action of the pressing plate pressure spring 9, the lock pressing plate 11 is pressed on the; at the moment, the outer diameter of the locking plate 11 is only required to be matched with the valve plate 4, so that the locking plate can be suitable for a flue fire damper with a single valve plate and can also be suitable for a flue fire damper with double valve plates; the bracket can be of a single-leg structure or a double-leg structure. The valve plate pressing strips 14 corresponding to the locking and pressing discs 7 are hinged to one end, close to the valve plates 4, of the supporting shaft 7, so that the structure is further optimized, the valve plate pressing strips 14 can be two branches symmetrically arranged along the supporting shaft 7 and correspond to the fire-proof valves for forcibly closing the two valve plates, and the valve plate pressing strips can also be one branch of fire-proof valves for forcibly closing the single valve plate. One end of the locking pressure plate 11, which faces the pressure plate pressure spring 9, is provided with a sunken groove 17, the valve plate trim strip 14 is provided with a clamping hook 15 which is clamped in the sunken groove 17, after the locking pressure plate 11 is separated from the bimetallic strip 8 and pressed to the valve plate trim strip 14, the valve plate trim strip 14 is outwards opened and pressed on the valve plate 4, and the valve plate 4 is always in a closed state because wedge-shaped locking is formed between the valve plate trim strip 14 and the locking pressure plate 11 with the conical cavity 12.

Another specific structure of the high-temperature closing device with the locking mechanism is as follows: including the support 6 mounted on the outer end face of the end face 3, see fig. 8, the support 6 is a two-leg structure, and it is also possible to remove the left leg or the right leg of the support 6 and only leave one leg. The support 6 is provided with a support shaft 7, one end of the support shaft 7, which is close to the valve plate 4, is hinged with a valve plate pressing strip 14, the valve plate pressing strips 14 are two branches symmetrically arranged along the support shaft 7, the two valve plate pressing strips 14 are respectively arranged corresponding to the two valve plates 4, the support shaft 7 is sleeved with a locking pressing plate 11 corresponding to the valve plate pressing strip 14, the support shaft 7 is sleeved with a pressing plate pressure spring 9, the support 6 is provided with a bimetallic strip 8 which extends to the locking pressing plate 11 and can be separated at a set temperature, and the bimetallic strip 8 can be replaced by a hot melt strip which can be melted at the set temperature. The locking pressure plate 11 is provided with a claw 16 which extends to the bimetallic strip 8 and is clamped on the bimetallic strip 8, the bimetallic strip 8 is provided with a clamping hole corresponding to the claw 16, or the bimetallic strip 8 is provided with a claw which extends to the pressing strip locking pressure plate 11 and is clamped on the pressing strip locking pressure plate 11, and the pressing strip locking pressure plate 11 is provided with a clamping hole corresponding to the claw, so that the pressing strip locking pressure plate 11 and the bimetallic strip 8 form a mutual locking relation. The valve plate pressing strip guide groove 19 is formed along the opposite outer side of the locking pressing disc 11, the valve plate pressing strip guide groove 19 is internally provided with a clamping groove 18, and the valve plate pressing strip 14 is provided with a clamping hook 15 which is clamped in the clamping groove 18. In this embodiment, the hinge structure of the support shaft 7, the valve plate bead 14 on the support shaft 7, the structure of the bimetal 8, and the installation structure of the bimetal 8 are the same as those of the previous embodiment. Referring to fig. 9 and 10, the locking plate 11 is substantially strip-shaped as a whole, a hole fitted with the support shaft 7 is formed in the middle of the strip-shaped locking plate 11, valve plate bead guide grooves 19 are formed inward at both ends in the length direction of the strip-shaped locking plate 11, clamping grooves 18 are formed at the opposite inner ends of the two valve plate bead guide grooves 19, a claw 16 is arranged at one side in the width direction of the strip-shaped locking plate 11, and both ends in the length direction of the locking plate 11 are bent to the same side along the joint of the valve plate bead guide grooves 19 and the clamping grooves 18. When the two valve plate pressing strips 14 are in a locking state, the clamping hooks 15 (located on the opposite inner sides of the valve plate pressing strips 14 at this time) arranged on the valve plate pressing strips 14 are clamped in the clamping grooves 18 of the locking plate 11, the two valve plate pressing strips 14 are respectively located in the guide grooves 19, and the clamping grooves 18 and the guide grooves 19 are separated by partition bars; after the two valve plate pressing strips 14 are opened, the two valve plate pressing strips 14 are approximately in a symmetrical parallel state, and the outer edge of the partition strip between the clamping groove 18 and the guide groove 19 is clamped in the clamping hook 15, so that the two valve plate pressing strips 14 are in a locking state. When the temperature of the smoke in the public smoke channel reaches a set warning temperature, soldering tin between the bimetallic strips 8 is melted, one of the bimetallic strips falls off from the other bimetallic strip, the locking pressing disc 11 is separated from the constraint of the bimetallic strips 8 and slides along the supporting shaft 7 under the action of the pressing disc pressing spring 9, at the moment, the clamping hook 15 on the valve plate pressing strip 14 and the opposite inner side surface of the valve plate pressing strip 14 form a sliding groove in the unfolding process of the valve plate pressing strip 14, the outer edge of the parting strip slides along the sliding groove, the locking pressing disc 11 presses the two valve plate pressing strips 14, the two valve plate pressing strips 14 are opened outwards and pressed on the two valve plates 4, and the valve plates 4 are always in a closed state because the.

The valve plate 4 can be hinged on the bracket 6 through a hinge and can also be hinged on the end surface 3 through a hinge. The air outlet 5 can be one, and the corresponding valve plate 4 is one piece. Referring to fig. 16-18, an air outlet 5 is disposed on the end surface 3, a rotatable valve plate 4 that can only be opened in the air outlet direction is correspondingly disposed on the air outlet 5, and the end surface of the air outlet end and the upper end of the valve plate 4 are inclined toward the air inlet 2. As shown in fig. 16, the left side of the valve plate 4 is hinged to the end surface 3 through the valve seat 27, and at this time, the high-temperature closing device adopts a single-leg structure, and the legs are also installed on the end surface 3 on the left side of the air outlet 5; of course, the right side of the valve plate 4 may be hinged to the end surface 3 through the valve seat 27, and at this time, the legs of the high temperature closing device are also mounted on the end surface 3 on the right side of the air outlet 5. As shown in fig. 17, the upper side of the valve plate 4 is hinged to the end surface 3 through the valve seat 27, and at this time, the high-temperature closing device adopts a single-leg structure, and the legs thereof are also installed on the end surface 3 on the upper side of the air outlet 5; of course, it is also possible that the underside of the valve plate 4 is hinged to the end face 3 via the valve seat 27, in which case the legs of the high-temperature shut-off device are also mounted on the end face 3 on the underside of the air outlet 5. As shown in fig. 18, the upper valve plate of the air outlet 5 is divided into two large parts and a small part, wherein the smaller part of the valve plate is fixed on the upper part of the air outlet 5, and the larger part of the valve plate is hinged on the smaller part of the valve plate through the valve seat 27, i.e. the valve plate 4 is of an upward opening type, at this time, the high-temperature closing device adopts a single-leg structure, and the support legs thereof are also installed on the end surface 3 on the upper side of the air outlet 5; certainly, the valve plate 4 can also be left-open or right-open, and at this time, the support legs of the high-temperature closing device are also installed on the end surface 3 on the left side or the right side of the air outlet 5. Besides the structure, the structural form of the valve plate can also be a disc-shaped structure.

The specific structure of the above embodiments is to illustrate the present invention, not to limit the present invention, and all modifications on the basis of the present invention shall fall into the protection scope of the present invention.

Claims

1. The utility model provides a flue fire damper, includes the flue gas passageway that constitutes by shell (1), is provided with mounting disc (26) on shell (1) outer wall, and flue gas passageway one end has air intake (2), and the relative other end is the air-out end, be equipped with rotatable valve block (4) that only can open to the air-out direction in the flue gas passageway or on terminal surface (3) of air-out end, mounting disc (26) inboard is equipped with kuppe (20), characterized by be equipped with on mounting disc (26) and fix its flue locking piece (21) on the flue, kuppe (20) left and right sides is equipped with eave tile groove (211) of installation flue locking piece (21), be equipped with the locking bolt hole of wearing on mounting disc (26).

2. The flue fire damper as recited in claim 1, wherein the flue locking member (21) comprises a base (103), a threaded hole (102) is formed in the base (103), a hook member (101) is disposed on one side of the base (103), a limit sleeve (107) corresponding to the locking bolt insertion hole is disposed on the inner side of the mounting plate (26), the bolt (104) penetrates through the locking bolt insertion hole and the limit sleeve (107) to be in threaded connection with the base (103), and the hook member (101) extends outwards from the hook groove (211).

3. The flue fire damper according to claim 2, characterized in that the projection of the base (103) on a horizontal plane is substantially square, wherein two opposite corners have circular arc surfaces (106) concentric with the threaded hole (102), the other two opposite corners are right-angle surfaces (105), the two circular arc surfaces (106) arranged oppositely form a rotation surface of the flue locking member (21), and the two right-angle surfaces (105) arranged oppositely form a stop surface of the flue locking member (21).

4. The flue fire damper as claimed in claim 3, wherein a supporting lug (212) for limiting the rotation surface and the stop surface of the flue locking piece (21) is arranged at the lower side of the hook groove (211), and the supporting lug (212) is in a substantially horizontal state.

5. The flue fire damper as recited in claim 2, characterized in that the outer end of the hook member (101) is provided with a protruding hook head, and the protruding hook head faces the mounting plate (26).

6. A flue damper as claimed in claim 1, characterized in that the flue locking member (21) comprises a hook member (101), a lug extending along two opposite walls of the hook member (101) is provided at one end of the hook member (101), a support (109) is hinged between the lugs by a pin (110), a threaded hole (104) is provided at a free end of the support (109), a bolt (104) is threaded into the hole from the locking bolt, the bolt is threadedly connected to the support (109), a spring (108) is fitted over a bolt section between the inner wall of the mounting plate (26) and the hook member (101), and the hook member (101) extends relatively outward from a hook groove (211).

7. A flue damper as claimed in claim 6, wherein the opposite wall of the hook member (101) has an arcuate outer projection (111) adapted to the spring (108).

8. The flue fire damper according to any one of claims 1-7, characterized in that the end face (3) is provided with a high temperature closing device which can force the valve plate (4) to close towards the air inlet (2) side under a set temperature and is provided with a locking mechanism, so that the valve plate (4) is always in a closed state.

9. The flue fire damper according to claim 8, characterized in that the high temperature closing device with the locking mechanism comprises a support (6) installed on the outer end face of the end face (3), a support shaft (7) is arranged on the support (6), a locking pressure plate (11) is sleeved on the support shaft (7), a pressure plate pressure spring (9) is sleeved on the support shaft (7), a hot melt plate or a separated bimetallic plate (8) which can be melted at a set temperature and extends to the locking pressure plate (11) is arranged at the position of the support (6), and the pressure strip locking pressure plate (11) and the hot melt plate or the bimetallic plate (8) are interlocked.

10. The flue fire damper according to claim 9, characterized in that a valve plate pressing strip (14) is hinged to one end of the supporting shaft (7) close to the valve plate (4), a locking pressing disc (11) is arranged corresponding to the valve plate pressing strip (14), a sinking groove (17) is arranged at one end of the locking pressing disc (11) facing the pressing disc pressing spring (9), a clamping hook (15) clamped in the sinking groove (17) is arranged on the valve plate pressing strip (14), and after the locking pressing disc (11) is separated from the bimetallic strip (8) and pressed against the valve plate pressing strip (14), a mutual locking mechanism is arranged between the locking pressing disc (11) and the valve plate pressing strip (14).

11. The flue fire damper as recited in claim 10, characterized in that the interlocking mechanism is a wedge shape at a hinged end of the valve plate (14) after the valve plate (14) is opened, the locking plate (11) and the corresponding end of the valve plate (14) have a tapered cavity (12), and the valve plate (14) with the tapered end and the tapered cavity (12) form a wedge-shaped locking.

12. The flue fire damper according to claim 8, characterized in that the high temperature closing device with the locking mechanism comprises a support (6) installed on the outer end face of the end face (3), a support shaft (7) is arranged on the support (6), a valve plate pressing strip (14) is hinged to one end of the support shaft (7) close to the valve plate (4), a locking plate (11) corresponding to the valve plate pressing strip (14) is sleeved on the support shaft (7), a pressing plate pressure spring (9) is sleeved on the support shaft (7), a hot melting strip or a separated bimetallic strip (8) which can be melted at a set temperature and extends to the locking plate (11) is arranged at the position of the support (6), the pressing strip locking plate (11) and the bimetallic strip (8) are interlocked, a valve plate pressing strip guide groove (19) which is arranged inwards is arranged along the opposite outer side of the locking plate (11), and a clamping groove (18) is arranged on the inner side, and a clamping hook (15) which is clamped in the clamping groove (18) is arranged on the valve plate pressing strip (14).

13. The flue fire damper as claimed in claim 8, wherein the end face (3) is provided with two air outlets (5), the two air outlets (5) are symmetrically arranged on the left and right of the end face of the air outlet end, and the end face of the air outlet end and the upper ends of the two valve plates (4) are inclined towards the air inlet (2).

14. The flue fire damper according to claim 8, wherein the end face (3) is provided with an air outlet (5), the valve plate (4) is a single piece, and one side of the valve plate (4) is hinged to the end face (3).

15. The flue fire damper according to claim 14, wherein the valve plate (4) is hinged to the end face (3) on the left or right side of the air outlet (5).

16. The flue fire damper according to claim 14, wherein the valve plate (4) is hinged to the end face (3) on the upper side or the lower side of the air outlet (5).

17. The fire damper of claim 8, characterized in that the end face (3) is provided with an air outlet (5), the valve plate of the air outlet (5) is divided into two parts, wherein the smaller part of the valve plate is fixed on the air outlet (5), and the larger part of the valve plate is hinged on the smaller part of the valve plate.

18. A flue system, comprising:

the public flue gas channel is provided with a fire damper mounting port at a set part;

a flue fire damper as claimed in any one of claims 1 to 17 mounted in the fire damper mounting opening.