CN110332343A - A kind of fire-preventing check valve - Google Patents
A kind of fire-preventing check valve Download PDFInfo
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- CN110332343A CN110332343A CN201910659084.2A CN201910659084A CN110332343A CN 110332343 A CN110332343 A CN 110332343A CN 201910659084 A CN201910659084 A CN 201910659084A CN 110332343 A CN110332343 A CN 110332343A
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- fire
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- 230000013011 mating Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 50
- 229920001971 elastomer Polymers 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 34
- 230000000694 effects Effects 0.000 description 12
- 239000000779 smoke Substances 0.000 description 9
- 230000005484 gravity Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of fire-preventing check valves, including valve body, valve components and support section, exhaust passage is provided in valve body, support section is formed in valve body and is located in exhaust passage, valve components can be opened and closed to be arranged on valve body, and valve components include valve block part and the wind guide parts that valve block portion perimeter is arranged in；Valve block part is equipped with toroidal race and the valve block main body inside toroidal race, support section has mating surface, valve components are in close state down, and toroidal race conforms to the mating surface of support section, so that valve block main body blocks exhaust passage and is tightly connected with being formed；For valve body tool there are two opposite side wall, wind guide parts have square contour, and clearance fit between the both sides of the edge and two side walls of wind guide parts under valve components are in the open state, forms the outflux of exhaust passage between two side walls and valve block part, wind guide parts.The smooth discharge of gas is reduced the resistance of discharge gas by the valve components that wind-guiding completely is capable of in present invention setting.
Description
Technical field
The invention belongs to house exhaust passage technical fields, and in particular to a kind of fire prevention non-return for being able to carry out complete wind-guiding
Valve.
Background technique
Fire-preventing check valve is one of the important component of house exhaust passage system, main function be to discharge flue gas into
Row water conservancy diversion, and prevent flue gas from flowing backward, while conveniently can effectively prevent fires when necessary equipped with locking mechanism, ensure safety；Its water conservancy diversion
Mainly pass through swinging back and forth for valve components realizes the open and close of exhaust passage to function, when needing to discharge fume exhaust, valve member
Part is opened to form outflux, and after discharging fume exhaust, valve components close and form sealing between valve body, to prevent smoke blowing string
Taste phenomenon.
Such as Chinese patent application 2016106548305 discloses a kind of fire-preventing check valve, including ontology, valve block and connection
Mechanism, the ontology are equipped with exhaust outlet, and the valve block lid is located on the exhaust outlet, and the ontology and the valve block pass through institute
Bindiny mechanism's connection is stated, the fire-preventing check valve further includes fixing piece and hits the ontology active force for slowing down the valve block
Flexible piece, described fixing piece one end connect with the valve block, and the fixing piece other end squeezes the flexible piece and keeps this soft
Property part is clamped between the fixing piece and the valve block.
For example Chinese patent application 2018112855827 discloses a kind of fire-preventing check valve again, including with exhaust outlet
The inside circumference of valve body and valve block for covering the exhaust outlet, the valve block has for being sealingly engaged the exhaust outlet
Loop landing zones, the oriented valve inner of at least partly connection of the internal edge of loop landing zones described in the interior lateral edge of the valve block
The guide card of extension.
In another example Chinese patent application 2018100495820 discloses a kind of fire-preventing check valve, including with air inlet
Fire resistant panel, fire resisting conduit, fire resisting check plate and fire fuse assembly, fire resisting check plate pass through articulation piece and fire resisting conduit
Or fire resistant panel is fixedly connected, fire resisting conduit outlet side and/or fire resisting check plate edge are equipped with soft sealing element, fire fuse
Component includes fuse link and the ejector that is fixedly connected with fuse link.
Current fire-preventing check valve is still unsmooth in the presence of exhaust, there is the phenomenon that vortex at exhaust passage outflux.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of fire-preventing check valves, are capable of complete wind-guiding by setting
The smooth discharge of gas is reduced the resistance of discharge gas by valve components, avoids forming vortex at exhaust passage outflux.
The specific technical solution of the present invention is as follows:
A kind of fire-preventing check valve, including valve body, valve components and support section are provided with exhaust passage in valve body, support
Part is formed in valve body and is located in exhaust passage, and valve components can be opened and closed to be arranged on valve body, with support section cooperate with
Turn on or off exhaust passage, valve components include valve block part for closing exhaust passage and are arranged outside valve block part
The wind guide parts in week；
Its middle valve plate part is provided with towards the inflow entrance toroidal race outstanding of exhaust passage and positioned at toroidal race
Internal valve block main body, support section have mating surface, and valve components are in close state down, and toroidal race conforms to support section
Mating surface so that valve block main body block exhaust passage completely with formed be tightly connected；
Wherein valve body tool is there are two opposite side wall, and wind guide parts have a square contour, the both sides of the edge of wind guide parts with
Clearance fit between two side walls under valve components are in the open state, is formed between two side walls and valve block part, wind guide parts
The outflux of exhaust passage.
In above-mentioned technical proposal of the invention, valve components form the structure of square-outside and round-inside, wherein circular portion is valve block
Part, with toroidal race and valve block main body, valve block main body is for covering exhaust passage and separating exhaust passage, annular seating
Circle is located at the periphery of valve block main body, for cooperatively forming sealing with the support section in exhaust passage；
Specifically, being provided with the reinforcement die casting knot in inside and outside round in valve block main body to improve the intensity of valve block main body
Structure；Further, the center of valve block main body is directed away from support section recess, correspondingly, the central area of valve block main body can also
To be set as arc surfaced structure.
In fire-preventing check valve, in order to realize the smooth of smoke evacuation exhaust, need to protrude into the portion of exhaust duct in fire-preventing check valve
Set up separately and set flow-guiding structure, the main purpose of two side walls is exactly so that the gas of discharge is led without horizontal proliferation in the present invention
It to be expelled directly out upwards；But the valve structure provided in valve block in the prior art such as Chinese patent 2016106548305,
It uses outer profile for circular frame mode, is only to cover valve seat (support section), there are larger between flow-guiding structure
Clearance space, valve block open when, gas a part of discharge is directly blown on valve, and another part can then be spread around,
It is spread even along the periphery of valve block to rear side lower section, forms vortex phenomenon between valve block and side wall, be unfavorable for gas
Quickly discharge, the open position that the gas diffused to below on rear side of valve block will also result in valve block is unstable, causes valve block to shake, valve
Phenomena such as piece aperture reduces.
Valve components of the invention are provided with wind guide parts except valve block main body, and wind guide parts have rectangular profile,
The clearance fit between two side walls, gap between the two is smaller, there's almost no the infiltration of gas, i.e., gas can not or
Close to that will not spread as the rear side lower section of valve block main body, vortex phenomenon, the gas of discharge will not be formed between two side walls
After drainage valve block main body, under the common guiding function of valve block main body and wind guide parts, side's discharge directly up.
Sealing can be well realized in toroidal race in valve components of the present invention, is provided with and toroidal race in support section
Matched mating surface, when valve components are closed, toroidal race conforms to the mating surface of support section, is connect using face-face therebetween
The mode of touching, so that valve block main body blocks exhaust passage to be formed and be tightly connected, to avoid smoke blowing taint of odour phenomenon completely；
Preferably, face-face contact between toroidal race and the mating surface of support section is circular arc face contact.
Another kind specific embodiment according to the present invention, valve block part is arranged between toroidal race and valve block main body
There are scattered air inducing inclined-plane or air inducing cambered surface, it is therefore an objective to which the gas for being blown to valve block main body is quickly subjected to drainage discharge.
Another kind specific embodiment according to the present invention, valve body are provided with valve shaft, and valve shaft is located at the outflow of exhaust passage
At mouthful, in the height direction, valve shaft is always positioned at the lower section of valve components, such as is provided with attachment base on rear side of valve block main body,
Valve components are connected to valve shaft by attachment base, to carry out the rotation around valve shaft.
Wherein, valve shaft is located at the lower section of valve components, is conducive to the opening angle for increasing valve components, can be in discharge gas speed
It spends in identical situation, obtains biggish opening angle so that gas to be quickly discharged；Meanwhile valve shaft is not arranged in the discharge of gas
On path, fully opening for valve block may be implemented, reduce the resistance caused by discharge gas.
Another kind specific embodiment according to the present invention, is also provided with the hole being used cooperatively in two side walls
Such as rubber column has can be set in group on the hole of Kong Zuzhong, may be implemented to change by changing position of the rubber column in hole is rented
Become the maximum opening angle position of valve components.
Another kind specific embodiment according to the present invention, the inflow entrance of valve components towards exhaust passage from top to bottom tilt
Setting, the inclination maximum of valve components are 15 °, and specifically the inclination angle of such as valve components is 10 °；Fire-preventing check valve in the prior art
In, valve components (valve block) all have biggish inclination angle, and at 30 ° or more, main purpose is to enhance valve components at part inclination angle
Leakproofness, enhancing valve components recoil to the trend of close valve state, to save the service life of reseting elastic element (spring)；But
After being setting greater obliquity, it may appear that the opening angle of valve components is small, open resistance increase, the outflux of exhaust passage it is small with
And reset element service life it is short the problems such as, be unfavorable for discharge fume exhaust process, it is easy to when in use occur smoke evacuation exhaust blocking
Phenomenon.
Correspondingly, the present invention is additionally provided with the force part for biasing valve components to valve position, force section subpackage
Upset connecting rod, balanced connecting rod and connecting rod torsional spring are included, the inflow entrance side that valve body is located at exhaust passage is provided with first axle, is overturn
The head end of connecting rod is hinged to valve body by first axle, and connecting rod torsional spring is set in first axle, and is set as being reversed connecting rod compression；
Mutually hinged between the end of upset connecting rod and the head end of balanced connecting rod, the end of balanced connecting rod is hinged to valve components.
Wherein, when valve components are in valve position, the end of upset connecting rod is preferably located at first axle far from valve components
Side, upset connecting rod and the center of gravity of balanced connecting rod are located at side of the first axle far from valve components at this time, and upset connecting rod and balance connect
Bar provides gravity for the closing of valve components and closes effect, to further increase the leakproofness of valve components closing；
Further, in the case where valve components are in the open state, the end of upset connecting rod is located at first axle close to valve components
Side, the center of upset connecting rod and balanced connecting rod is located at first axle close to the side of valve components at this time；Upset connecting rod and balance connect
Bar can provide gravity opening effect for the unlatching of valve components and be at opening to further increase the opening range of valve components
Maximum position, thus quickly smoke evacuation exhaust.
In the present invention, become using the gravity drive that upset connecting rod is under different location with different directions with support link
The effect of gesture, cooperates the valve components of relatively small tilt angle, realize valve components smoothly open, closing process, significantly improving valve components
While opening angle, the resistance of valve components unlatching is reduced, improves the sealing performance under valve components closed state, additionally
Increase the service life of connecting rod torsional spring.
Another kind specific embodiment according to the present invention, toroidal race have the loading end perpendicular to wind guide parts, valve
Element is in close state down, orthogonal between loading end and mating surface, and sealing rubber ring, sealing rubber ring are arranged on loading end
At least partly conform to mating surface；The sealing performance between valve components and support section is further increased by sealing rubber ring.
Another kind specific embodiment according to the present invention, the edge of wind guide parts is provided with backwards to support section
Turnup structure, the edge of wind guide parts have the relatively narrow contact plane with two side walls clearance fit, are arranged in this way
The first purpose is that can limit valve components generates shaking when discharge gas velocity is larger, and the flow velocity of exhaust gas is more made
Bigger opening angle is obtained for opening valve components.
Another kind specific embodiment according to the present invention, under any position state of valve components, under wind guide parts
Method, edge is arranged to be always positioned at below the mating surface of support section, the gas of discharge can directly be blown in valve components without
It is blown in flow-guiding structure from below valve components.
In order to realize the complete wind effect of valve components of the present invention, as a kind of extension of the invention, in valve body position
It is provided with lower sealing plate below the outflux of exhaust passage, lower sealing plate is respectively connected to two side walls, in any bit of valve components
It sets under state, valve components all have overlapping region between the projection and the projection in the horizontal plane of lower sealing plate of horizontal plane.
In the present solution, lower sealing plate limits during gas flows up in exhaust duct, it will not be to exhaust passage in valve body
The gas of middle discharge impacts, i.e., in the case where valve components are in and open exhaust condition, the gas in exhaust duct will not be to this
The gas that fire-preventing check valve is being discharged impacts.
Another kind specific embodiment according to the present invention, is provided with above the outflux that valve body is located at exhaust passage
Sealing plate, upper sealing plate are respectively connected to two side walls, and in the case where valve components are in close state, upper sealing plate is set as covering wind guide parts
Upper edge and be no more than wind guide parts lower edge.
The main purpose of upper sealing plate is that the sundries that can be avoided in exhaust duct is fallen on valve body, especially can be avoided and falls in
In valve components, avoid fire-preventing check valve of the present invention in long-time use process by sundries it is liquor-saturated fall bring and periodically clean ask
Topic.
Another kind specific embodiment according to the present invention, valve body also have vertical connecting plates, are located at side wall far from support
Partial side, vertical connecting plates are respectively connected to two side walls, and wherein the upper end-face edge of vertical connecting plates is set as beyond upper
Sealing plate.
Specifically, two side walls can reduce the resistance that primary air flows up in exhaust duct, lower envelope with being vertically arranged
It is the biggish notch of unconnected, between the two formation between plate and vertical connecting plates, when valve components are not gated on, exhaust
Ascending air in road can flow up from aforementioned notch and hardly by resistance.
The upper end-face edge of vertical connecting plates is set as the upper end-face edge beyond upper sealing plate namely vertical connecting plates beyond valve member
The lower edge of the upper end of part, vertical connecting plates is lower than upper sealing plate, but has biggish distance between lower sealing plate, is arranged in this way
Purpose be, along valve components flow out gas vertical connecting plates are flow to posture obliquely after, in vertical connecting plates
It is flowed out straight up under effect, the flowing to the primary air in exhaust duct is avoided to impact.
The present invention have it is following the utility model has the advantages that
Diversion effect of the invention is good, is provided with the valve components of square-outside and round-inside, and the wind guide parts in valve components have rectangular
Clearance fit between profile, with two side walls reduces the resistance of gas discharge, and discharge gas can farthest be avoided to exist
The vortex phenomenon generated at exhaust passage outflux；
Valve components of the invention have biggish opening angle, and valve shaft is located at below the rear side of valve components, reduce gas row
Resistance out is conducive to the quick discharge of gas；
Valve components of the invention have better seal effect, match in the toroidal race and support section being arranged by evagination
Face-face sealing means between conjunction face and the sealing means of sealing rubber ring and mating surface are added in toroidal race, effectively kept away
Smoke blowing taint of odour phenomenon is exempted from, especially after fire prevention element triggering, the cooperation of valve components and support section is more stable, closed effect
Fruit is good.
The present invention can be realized complete wind-guiding, be provided with lower sealing plate and vertical connecting plates, avoid the master in exhaust duct
Influence of the air-flow to fire-preventing check valve discharge gas, and the gas being discharged flows out straight up, so that the main gas in exhaust duct
Stream flowing is more stable.
The present invention is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fire-preventing check valve of the present invention；
Fig. 2 is the diagrammatic cross-section of fire-preventing check valve, and which show the states that valve components are in normal valve position；
Fig. 3 is the structural schematic diagram of valve components of the present invention；
Fig. 4 is a quarter diagrammatic cross-section of Fig. 3；
Fig. 5 is the structural schematic diagram of support section of the present invention；
Fig. 6 is the structural schematic diagram of fire-preventing check valve upper sealing plate of the present invention, lower sealing plate.
In description of the invention, it is to be understood that term " on ", "lower" "front", "rear", "left", "right", "horizontal" with
And the orientation or positional relationship of the instructions such as "vertical" are orientation based on the figure or positional relationship, are merely for convenience of
The description present invention is not instruction or implies that signified device or feature must have specific direction, with specific side
Position construction and operation, for the ordinary skill in the art, cope with the understanding that above-mentioned term does broad sense, it is thus impossible to
It is interpreted as limitation of the present invention.
Specific embodiment
As shown in figures 1 to 6, a kind of fire-preventing check valve, including valve body 1, valve components 2 and support section 3；In valve body 1
It is provided with exhaust passage 11, exhaust passage 11 has inflow entrance 111 and outflux 112, and support section 3 is formed in valve body 1 simultaneously
In exhaust passage 11, and between inflow entrance 111 and outflux 112；Valve shaft 12, valve components 2 are provided on valve body 1
Open and close movement is carried out around valve shaft 12, to turn on or off exhaust passage 11.
Support section 3 includes the valve seat 31 of cylindrical shape and the mating surface 32 for being formed in 31 one end of valve seat；
Valve components 2 include valve block part 21 and wind guide parts 22, and middle valve plate part 21 is used to close exhaust passage 11,
Sealed connection can be formed between mating surface 32, wind guide parts 22 are located at the periphery of valve block part 21, are used for from exhaust passage
The gas outflow of 11 outfluxes 112 discharge；
Valve block part 21 includes toroidal race 211 and valve block main body 212, and the outer profile of valve block main body 212 is in be adapted to valve
The circle of seat 31, the prominent circumference side for being formed in valve block main body 212 of the inflow entrance 111 of toroidal race 211 towards exhaust passage 11
Upwards, it is preferred that be provided with scattered air inducing inclined-plane 213 between toroidal race 211 and valve block main body 212, valve will be blown to
The gas of piece main body 212 quickly carries out drainage discharge.
Specifically, having been can be set in valve block main body 212 in order to improve the intensity of valve block main body 212 in inside and outside round
Reinforcement die casting structure；Further, the center of valve block main body 212 is directed away from the recess of support section 3, is in valve components 2
Under closed state, toroidal race 211 conforms to mating surface 32, so that valve block main body 212 blocks exhaust passage 11 completely to be formed
It is tightly connected.
It is wherein provided perpendicular to the loading end 214 of wind guide parts 22 in toroidal race 211, and is covered on loading end 214
Equipped with sealing ring 215, valve components 2 are in close state down, orthogonal between loading end 214 and mating surface 32, sealing rubber ring
215 conform to mating surface 32 completely；To further increase the sealing performance between valve components 2 and support section 3.
Wherein, a kind of shape section as shown in Figure 4 of sealing rubber ring 215 is L shape, and having can be adjacent to cooperation
Long side on face 32, to increase the sealing performance under 2 closed state of valve components.
The outer profile of wind guide parts 22 is square contour, and in the setting of valve body 1, there are two opposite side wall 13, wind guide parts 22
Both sides of the edge and two side walls 13 between clearance fit, under valve components 2 are in the open state, two side walls 13 and valve block part
21, the outflux 112 of exhaust passage 11 is formed between wind guide parts 22.
Further, the edge of wind guide parts 22 is provided with the turnup structure 221 backwards to support section 3, air dam
Points 22 edge has the relatively narrow contact plane with 13 clearance fit of two side walls, avoid valve components 2 two sides
While shaking between wall 13, the smoothness that valve components 2 are opened is improved.
In preferable example of the invention, the rear side of valve components 2 is provided with attachment base 23, valve components 2 pass through attachment base
23 are connected to valve shaft 12, and wherein valve shaft 12 is always positioned at the lower section of valve components 2.
For the ease of the process that opens or closes of valve components 2, a kind of preferred structure setting of valve components 2 are as follows:
The inflow entrance 111 of valve components 2 towards exhaust passage 11 is from top to bottom obliquely installed, and inclination angle as shown in Figure 2 is
10 ° of the case where, are provided with force part 4 in valve body 1, and force part 4 includes upset connecting rod 41 and balanced connecting rod 42, is used for valve
Element 2 is biased to valve position；Double rocking lever structure is formed between upset connecting rod 41, balanced connecting rod 42 and valve components 2, specifically,
The first axle 14 for being parallel to valve shaft 12, the head end of upset connecting rod 41 are set in the inflow entrance 111 that valve body 1 is located at exhaust passage 11
It is hinged to valve body 1 by first axle 14, it is mutually hinged between the end of upset connecting rod 41 and the head end of balanced connecting rod 42, in valve member
The flanking central of 2 face exhaust passage of part, 11 inflow entrance 111 is provided with connection sheet 24, and connection sheet 24 has hinged end, and balance connects
The end of bar 42 is hinged to the hinged end of connection sheet 24, so that being formed with first axle 14, valve shaft 12 is rack, with upset connecting rod 41
It is rocking bar, the double rocking lever structure with balanced connecting rod 42 for connecting rod with valve components 2.
For the ease of being automatically closed for valve components 2, one of rocking bar application is selected to automatically reset power, of the invention excellent
It selects in example, force part 4 can be set in first axle 14 with connecting rod torsional spring 43, connecting rod torsional spring 43, and be set as being reversed
Connecting rod 41 compresses；
When needing smoke evacuation exhaust, the air-flow with given pace blows valve components 2 open, and further compression connecting rod is turned round
Spring 43, after gas is completely exhausted out, under the action of connecting rod torsional spring 43, valve components 2 are reset to closed position.
In other preferable examples of the invention, can also by design upset connecting rod 41, the length of balanced connecting rod 42 with
And active position, to provide the auxiliary driving force during valve components 2 are turned on or off, specifically:
When valve components 2 are in valve position, the end of upset connecting rod 41 is preferably located at first axle 14 far from valve components 2
Side, the center of gravity of upset connecting rod 41 and balanced connecting rod 42 is located at side of the first axle 14 far from valve components 2, upset connecting rod at this time
41, which provide gravity with balanced connecting rod 42 for the closing of valve components 2, closes effect.
In the case where valve components 2 are in the open state, the end of upset connecting rod 41 is located at first axle 14 close to the one of valve components 2
Side, the center of upset connecting rod 41 and balanced connecting rod 42 is located at first axle 14 close to the side of valve components 2 at this time；Upset connecting rod 41 with
Balanced connecting rod 42 can provide gravity for the unlatching of valve components 2 and open effect.
Further, in order to enable gravity is closed, better effect is obvious, and upset connecting rod 41 preferably has curved arc part, such as
Shown in Fig. 2；Such design method can greatly improve the smooth degree that valve components 2 are turned on or off process, so that valve components
2 have stronger sealing performance under bigger opening angle and closed position.
In order to realize the complete wind effect of valve components 2 of the present invention, in another preferable example of the invention, in valve
Body 1, which is located at below the outflux 112 of exhaust passage 11, is provided with lower sealing plate 15, and lower sealing plate 15 is respectively connected to two side walls 13,
Under any position state of valve components 2, valve components 2 are between the projection and the projection in the horizontal plane of lower sealing plate 15 of horizontal plane
Overlapping region is all had, to limit the outflux 112 that gas in exhaust duct flows upward to exhaust passage 11.
Wherein valve shaft 12 is preferably mounted on lower sealing plate 15.
Further, upper sealing plate 16, upper sealing plate 16 are provided with above the outflux 112 that valve body 1 is located at exhaust passage 11
Two side walls 13 are respectively connected to, in the case where valve components 2 are in close state, upper sealing plate 16 is set as the upper of covering wind guide parts 22
Side edge and the lower edge for being no more than wind guide parts 22, fall in valve components 2 to avoid the sundries in exhaust duct.
Wherein, the hole group of cooperation is provided in two side walls 13, by the specific empty interior setting such as glue of Kong Zuzhong
The mode of plug or stud especially stays in exhaust duct in high level to realize the maximum opening position of control valve components 2,
The aperture of fire-preventing check valve in bottom section, greater than the aperture for being located at fire-preventing check valve in top section, multiple fire prevention stop
The opening for returning valve is sequentially reduced from bottom to up, be can be very good to adjust the windage of each floor smoke evacuation exhaust up and down, is realized each up and down
The equilibrium of floor smoke evacuation capacity.
Further, valve body 1 also has vertical connecting plates 17, and referring to fig. 2, it is separate that vertical connecting plates 17 are located at side wall 13
The side of support section 3, vertical connecting plates 17 are respectively connected to two side walls 13, and wherein the upper end-face edge of vertical connecting plates 17 is set
It is set to beyond upper sealing plate 16, after flowing to vertical connecting plates 17 along the gas that valve components 2 flow out with posture obliquely, vertical
It is flowed out straight up under the action of connecting plate 17, the flowing to the primary air in exhaust duct is avoided to impact.
Although the present invention is disclosed above in the preferred embodiment, it is not intended to limit the invention the range of implementation.Any
The those of ordinary skill in field is not departing from invention scope of the invention, improves when can make a little, i.e., all according to the present invention
The same improvement done, should be the scope of the present invention and is covered.
Claims (10)
1. a kind of fire-preventing check valve, including valve body, valve components and support section, it is provided with exhaust passage in the valve body, institute
It states support section to be formed in the valve body and be located in the exhaust passage, the valve components can be opened and closed to be arranged in the valve
On body, cooperate with the support section to turn on or off the exhaust passage, which is characterized in that the valve components include using
In closing the valve block part of the exhaust passage and the wind guide parts of the valve block portion perimeter be arranged in；
Wherein the valve block part is provided with towards the inflow entrance toroidal race outstanding of the exhaust passage and positioned at described
Valve block main body inside toroidal race, the support section have mating surface, and the valve components are in close state down, the ring
Shape seat ring conforms to the mating surface of the support section, so as to block the exhaust passage completely close to be formed for the valve block main body
Envelope connection；
Wherein valve body tool is there are two opposite side wall, and the wind guide parts have a square contour, and the two of the wind guide parts
Clearance fit between side edge and two side walls, under the valve components are in the open state, two side walls with it is described
The outflux of the exhaust passage is formed between valve block part, the wind guide parts.
2. fire-preventing check valve as described in claim 1, which is characterized in that the valve block part is located at the toroidal race and institute
It states and is provided with scattered air inducing inclined-plane or air inducing cambered surface between valve block main body.
3. fire-preventing check valve as described in claim 1, which is characterized in that the valve body is provided with valve shaft, and the valve shaft is located at
At the outflux of the exhaust passage, in the height direction, the valve shaft is always positioned at the lower section of the valve components.
4. fire-preventing check valve as described in claim 1, which is characterized in that inflow of the valve components towards the exhaust passage
Mouth is from top to bottom obliquely installed, and the inclination maximum of the valve components is 15 °.
5. fire-preventing check valve as described in claim 1, which is characterized in that the toroidal race has perpendicular to the air dam
The loading end divided, the valve components are in close state down, orthogonal between the loading end and the mating surface, described to hold
Sealing rubber ring is arranged on section, the sealing rubber ring at least partly conforms to the mating surface.
6. the fire-preventing check valve as described in one of claim 1-5, which is characterized in that it is logical to be located at the exhaust in the valve body
It is provided with lower sealing plate below the outflux in road, the lower sealing plate is respectively connected to two side walls, in appointing for the valve components
Under one location status, all had between the projection of projection and the lower sealing plate in the horizontal plane of the valve components in the horizontal plane
Overlapping region.
7. fire-preventing check valve as claimed in claim 6, which is characterized in that be located at the outflow of the exhaust passage in the valve body
It is provided with upper sealing plate above mouthful, the upper sealing plate is respectively connected to two side walls, is in close state in the valve components
Under, the upper sealing plate is set as covering the upper edge of the wind guide parts and is no more than the lower edge of the wind guide parts.
8. fire-preventing check valve as claimed in claim 7, which is characterized in that the valve body also has vertical connecting plates, is located at institute
Side of the side wall far from the support section is stated, the vertical connecting plates are respectively connected to two side walls, wherein described perpendicular
The upper end-face edge of direct-connected fishplate bar is set as beyond the upper sealing plate.
9. fire-preventing check valve as described in claim 1, which is characterized in that the edge of the wind guide parts is provided with backwards
The turnup structure of the support section.
10. fire-preventing check valve as described in claim 1, which is characterized in that under any position state of the valve components, institute
The lower edge for stating wind guide parts is set as below the mating surface for being always positioned at the support section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659084.2A CN110332343A (en) | 2019-07-19 | 2019-07-19 | A kind of fire-preventing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659084.2A CN110332343A (en) | 2019-07-19 | 2019-07-19 | A kind of fire-preventing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110332343A true CN110332343A (en) | 2019-10-15 |
Family
ID=68146848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910659084.2A Pending CN110332343A (en) | 2019-07-19 | 2019-07-19 | A kind of fire-preventing check valve |
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| CN (1) | CN110332343A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110792827A (en) * | 2019-12-05 | 2020-02-14 | 佛山市南海区键源五金制品有限公司 | Fire prevention valve of high fire control security |
| CN111895102A (en) * | 2020-08-04 | 2020-11-06 | 石家庄阀门一厂股份有限公司 | Ground type ventilation airtight valve is worn to fire prevention function |
| CN113864492A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
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Effective date of registration: 20210901 Address after: 510000 A301, building 1, No.23 Hejing South Road, Liwan District, Guangzhou City, Guangdong Province Applicant after: GUANGZHOU CAIDIE ENERGY-SAVING TECHNOLOGY Co.,Ltd. Address before: 510000 first floor, 248 Chigang West Road, Haizhu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU FAYU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |