CN109027271A - A kind of fire-preventing check valve and its application method with valve block retaining mechanism - Google Patents
A kind of fire-preventing check valve and its application method with valve block retaining mechanism Download PDFInfo
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- CN109027271A CN109027271A CN201811285573.8A CN201811285573A CN109027271A CN 109027271 A CN109027271 A CN 109027271A CN 201811285573 A CN201811285573 A CN 201811285573A CN 109027271 A CN109027271 A CN 109027271A
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- China
- Prior art keywords
- bar
- compression bar
- valve block
- shaft
- retaining mechanism
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Temperature-Responsive Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a kind of fire-preventing check valves with valve block retaining mechanism, including the valve body with exhaust outlet and the valve block, the first retaining mechanism, temperature sensing element and the first elastic element that are covered on exhaust ports and are rotatablely connected with valve body, the compression bar of first retaining mechanism is connected with compression bar shaft, and compression bar shaft is rotationally connected with compression bar positioning region；When the temperature sensing element is in the operating temperature lower than temperature sensing element, stop the compression bar, so that first retaining mechanism keeps non-locking state；When the temperature sensing element is in the operating temperature equal to or higher than temperature sensing element, the compression bar is discharged, so that first retaining mechanism enters locking state.Fire-preventing check valve of the invention effectively improves fire-proof smoke insulation effect.
Description
Technical field
The present invention relates to a kind of fire-preventing check valve and its application method with valve block retaining mechanism.
Background technique
In house or commercial building, upper and lower level building is typically provided with sharing of exhaust road, each layer kitchen, toilet respectively with
Sharing of exhaust road connection, so that flue gas or foul smell are discharged into exhausting duct by exhaust apparatus such as smoke exhaust ventilators.It shares in order to prevent
Flue gas in exhausting duct flows backward, and is equipped with check-valves between the exhaust apparatus and shared air duct in each kitchen, toilet.This
Outside, when fire occurs for other floors in order to prevent, the pyrotechnics in sharing of exhaust road, which flows backward, enters this family room, also requires the check-valves
It should be fire resisting damper, when fire occurs for other rooms, be automatically closed to prevent fire spread.
However, fire-preventing check valve in the prior art happens occasionally valve block by flue gas greasy dirt contamination after caused valve block with
The problems such as valve body adhesion or valve block are unable to completely close；Also, there are the flue gases flowed in exhaust duct to do for some fire-preventing check valves
The problem of disturbing fire-preventing check valve exhaust；In addition, some fire-preventing check valves, which are also possible to retaining mechanism failure, leads to fire-proof smoke insulation function
The problem of failure；Furthermore, it is also desirable to fire-preventing check valve can be turned off manually when needed to ensure fire-proof smoke insulation.Therefore, still
Need improved fire-preventing check valve further to solve above-mentioned technical problem.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of fire-preventing check valve with valve block retaining mechanism and its making
Use method.Specifically, the present invention provides following technical scheme.
In one aspect, the present invention provides a kind of fire-preventing check valve with valve block retaining mechanism, including with exhaust outlet
Valve body and be covered on exhaust ports and with valve body rotation connection valve block, the fire-preventing check valve further includes the first locking machine
Structure, temperature sensing element and the first elastic element, first retaining mechanism include compression bar and compression bar positioning region, the compression bar positioning region
It is fixedly connected on valve body；It is connected with compression bar shaft in the connecting pin of the compression bar, it is fixed that the compression bar shaft is rotationally connected with compression bar
Position portion makes the compression bar have first position and the second position；When the compression bar is in first position, the compression bar is located at
Except the first track that the valve block switching station is passed through, so that first retaining mechanism is unlocked；When the pressure
When bar is in the second position, the free end positioned at the compression bar or the pressure unit close to the free end oppress the appearance of the valve block
Oppression department on face, so that the valve block closes the exhaust outlet and first retaining mechanism is in locking state；The temperature
Quick element is fixed on the valve body, and one end of first elastic element is connected to the compression bar positioning region and the other end is connected to
Compression bar is to apply the pressure towards the oppression department to compression bar；When the temperature sensing element is in the operating temperature lower than temperature sensing element
When, the temperature sensing element is in undeformed first state and stops the compression bar, so that first retaining mechanism is kept
Non- locking state；When the temperature sensing element is in the operating temperature equal to or higher than temperature sensing element, the temperature sensing element transformation
For deformation the second state to discharge the compression bar so that the compression bar is under the driving of the first elastic element around the compression bar
Shaft rotates up to the pressure unit and oppresses the oppression department and first retaining mechanism is made to enter locking state.
Further, described when compression bar shaft rotation makes the compression bar be moved to the second position from first position
The first plane and the valve block where the motion track of pressure unit are hung down when closing the exhaust outlet with the exhaust outlet axis
It is straight and pass through the oppression department the second plane between the first angle greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree are more excellent
About 5 degree of choosing, and line and the compression bar shaft between the compression bar shaft and the intersection point and the pressure unit of the second plane
Second angle of the axis between the projection in the second plane be greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5
Degree.
Further, locating recesses are equipped in the oppression department, the pressure unit is equipped with protrusion, when the first locking machine
When structure is in locking state, the recess is with protrusion cooperation so that the protrusion to be limited in the recess.
Further, one end of the separate compression bar of the compression bar shaft is equipped with the first positioning pin and is socketed with movable sleeve
Pipe；The side wall of the moving casing is equipped with positioning cotter way the first positioning pin to be limited in positioning cotter way, so that the activity
Casing is only capable of the axial movement along compression bar shaft, and cannot rotate around compression bar shaft；The one of the separate compression bar of the moving casing
End is equipped with positioning tongue, and the compression bar positioning region is additionally provided with the third limit hole with the positioning engaged so as to only described
Compression bar allows to position tongue insertion third limit hole and compression bar shaft is prevented to rotate when being in the second position.
Further, the compression bar positioning region has the first limit plate, the second limit plate and third limit plate, the compression bar
Shaft pivotally sequentially passes through and is limited to the first limit hole of the first limit plate and the second limit of the second limit plate
Position hole, between the second limit plate and third limit plate, the first retaining spring is socketed in compression bar shaft the moving casing
And to oppress moving casing to third limit plate between the second limit plate and moving casing.
It further, further include alarm device, the contact switch of the alarm device is set at third limit hole, works as institute
When stating positioning tongue insertion third limit hole, the positioning tongue compressing contact switch is so that the alarm device issues alarm letter
Number.
Further, the fire-preventing check valve with valve block retaining mechanism further includes the second retaining mechanism, and described second
Retaining mechanism includes bar and bar positioning region, and the bar positioning region is fixed on valve body, and the bar is rotatably coupled
Make the bar that there is the third place and the 4th position in bar positioning region；The valve block be fixedly connected with valve block shaft and
It is rotatablely connected by valve block shaft and valve body, one end of the valve block shaft is equipped with the stop for limiting the rotation of valve block shaft
Portion；When the bar is in the third place, the bar is in valve block opening and closing process middle valve plate shaft and drives retainer rotation
Rotary motion trace except with allow valve block shaft rotate so that the second retaining mechanism is unlocked；At the bar
In the 4th position and valve block in the closure state, the bar is in valve block opening and closing process middle valve plate shaft and retainer is driven to turn
Within dynamic rotary motion trace and the valve block shaft is stopped to rotate, so that the second retaining mechanism is in locking state；Preferably,
The retainer is the crank for being set to the valve block roller end.
Further, the fire-preventing check valve with valve block retaining mechanism further includes bar shaft and fixed sleeving, institute
It states bar to be fixed on one end of bar shaft and be rotatablely connected by bar shaft and bar positioning region, the fixed sleeving is fixed
In on bar positioning region, the other end of the bar shaft penetrates rotatably fixed sleeving, and the bar shaft is equipped with the
Two positioning pins, the fixed sleeving enter circumferentially arranged with the second positioning pin of permission and limit the first positioning that bar shaft rotates
Notch and the second locating notch；When the second positioning pin enters the first locating notch, the bar is in the third place；When second
When positioning pin enters the second locating notch, the bar is in the 4th position.
Further, the fire-preventing check valve with valve block retaining mechanism further includes valve seat and bar knob, valve seat with
Valve body is fixedly connected for valve body to be fixed on exhaust duct, and bar positioning region is located at the side towards exhaust duct of valve seat, bar
The other end of shaft penetrates rotatably valve seat and is fixed with bar knob；Preferably, it is fixed that second is additionally provided in bar shaft
Position spring is used to oppress the second positioning pin to the first locating notch and/or the second locating notch.
On the other hand, the present invention also provides the users of the fire-preventing check valve described in one kind with valve block retaining mechanism
Method, comprising:
Step S100, when the temperature of temperature sensing element local environment rises to the operating temperature equal to or higher than temperature sensing element,
The temperature sensing element is changed into the second state of deformation from undeformed first state and discharges the compression bar, and the compression bar exists
The oppression department that the pressure unit oppresses the valve block is rotated up to around the compression bar shaft under the driving of first elastic element, so that
The valve block closes the exhaust outlet and the first retaining mechanism never locking state is made to be changed into locking state；
Preferably, described to apply when compression bar shaft rotation makes the compression bar be moved to the second position from first position
The first plane where the motion track of splenium is vertical with the exhaust outlet axis when closing the exhaust outlet with the valve block
And the first angle between the second plane for passing through the oppression department is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably
About 5 degree, and the line between the compression bar shaft and the intersection point and the pressure unit of the second plane and the compression bar shaft
Second angle of the axis between the projection in the second plane is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5
Degree；
Preferably, described fixed when compression bar shaft rotation makes the compression bar be moved to the second position from first position
Position tongue also rotates with it, and when the compression bar be in the second position, the positioning tongue be inserted into third limit hole thus
Compression bar shaft is prevented to rotate and the first retaining mechanism is made to be maintained at locking state；
Preferably, first retaining spring oppresses the positioning tongue and is inserted into third limit hole；
Preferably, when the positioning tongue is inserted into third limit hole, the contact of the positioning tongue compressing alarm device
It switchs so that the alarm device issues alarm signal；
Preferably, the method also includes step S200, when the temperature of temperature sensing element local environment is lower than temperature sensing element
When operating temperature, the temperature sensing element is set to undeformed first state, the first elastic element of compressing makes the compression bar
The temperature sensing element is rotated up to around the compression bar shaft and stops the compression bar, so that first retaining mechanism is in not
Locking state；
Preferably, step S200 further include: positioning tongue is extracted into third limit hole, then oppressing the first elastic element makes
The compression bar is rotated around the compression bar shaft；
Preferably, the method also includes step S300, when the bar is in the third place and valve block is in closed form
When state, the bar is rotated to the 4th position to stop the valve block shaft to rotate, so that the second retaining mechanism is in locking shape
State；
Preferably, step S300 further include: mobile bar shaft makes second to determine when the bar is in the third place
Position pin leaves the first locating notch, and then rotating bar shaft makes the bar reach the 4th position, then moves bar shaft
So that the second positioning pin enters the second locating notch；
Preferably, the method also includes step S400, when the bar is in the 4th position and valve block is in closed form
When state, the bar is rotated to the third place to allow the valve block shaft to rotate, and is not locked so that the second retaining mechanism is in
State；
Preferably, step S400 further include: bar shaft is pushed axially to transport along it when the bar is in four positions
It moves so that the second positioning pin leaves the second locating notch, then rotating bar shaft makes the bar reach the third place, then
Mobile bar shaft makes the second positioning pin enter the first locating notch；
Preferably, in step S300 and/or step S400, using the second retaining spring along the axial by the of bar shaft
The compressing of two positioning pins enters the first locating notch and/or the second locating notch；
Preferably, in step S300 and/or step S400, using bar knob along the axial movement bar of bar shaft
Shaft makes the second positioning pin leave the first locating notch or the second locating notch；Preferably, bar is rotated using bar knob
Shaft.
In the description of the present invention, the meaning of " complete " " substantially " is not precluded.Such as an ingredient substantially free
Y is also possible to be entirely free of Y.If desired, " substantially " can delete from present invention definition." containing " both includes mentioning
The factor arrived also allows to include additional, uncertain factor." about ", the case where " left and right " is with each component concentration system is indicated
Under, refer to +/- the 5% of standard value, +/- 4%, +/- 3%, +/- 2%, +/- 1%, +/- 0.5%."and/or" is indicated by its company
The multiple terms connect can respectively be used alone, and mutually can also arbitrarily combine.
In the present invention, example is generally illustrated by a certain range, is intended merely to concise explanation, rather than to this
The limitation of invention.The range of description includes subrange, is also included within individual numerical value all within the scope of this.For example, 1~6
This range, including subrange such as 1~3,1~4,1~5,2~4,2~6,3~6 etc. also include individually counting within the scope of this
Value, such as 1,2,3,4,5,6.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of the description present invention, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fire-preventing check valve with valve block retaining mechanism of the invention；
Fig. 2 is the structural schematic diagram of the first retaining mechanism of fire-preventing check valve shown in Fig. 1；
Fig. 3 is the structural schematic diagram of compression bar positioning region in the first retaining mechanism shown in Fig. 2；
Fig. 4 is the structural schematic diagram of moving casing in compression bar positioning region shown in Fig. 3；
Fig. 5 is the structural schematic diagram of the second retaining mechanism of fire-preventing check valve shown in Fig. 1；
Fig. 6 is the structural schematic diagram of fire-preventing check valve shown in Fig. 1 with rectification shield；
Fig. 7 is the cross section structure schematic diagram that fire-preventing check valve shown in Fig. 1 is in close state；
Fig. 8 is the cross section structure schematic diagram in the open state of fire-preventing check valve shown in Fig. 1；
Fig. 9 is the structural schematic diagram of the valve block of fire-preventing check valve shown in Fig. 1；
Figure 10 is the cross section structure schematic diagram of valve block shown in Fig. 9；
Figure 11 is the structural schematic diagram of valve block shown in Fig. 9 with wind-guiding commutator segment；
In figure: 1- valve body；11- exhaust outlet；12- straight drum part；13- valve seat；14- fixed frame；15- fixing clamp；16- rectification
Shield；17- strainer；18- blast connection；19- bent tube section；2- temperature sensing element；3- valve block；31- valve block shaft；32- valve block closes
Close spring；33- valve block rotating shaft winch；34- valve block positioning region；35- oppression department；36- valve block connecting plate；37- guide card；371- first
Part guide card；The highest point of 372- guide card；38- is used for the protrusion of water conservancy diversion；The loop landing zones 39-；381- peak potion；The first ridge of 382-
Portion；The second spine of 383-；384- third spine；The first slope 385- portion；The second slope 386- portion；387- third slope portion；41- compression bar；
411- pressure unit；412- compression bar shaft；The first positioning pin of 413-；42- compression bar positioning region；421- block compression bar；422- first is limited
Position plate；The second limit plate of 423-；424- third limit plate；425- contact switch positioning region；The first limit hole of 426-；427- second
Limit hole；428- third limit hole；43- compression bar rotation spring；The first retaining spring of 44-；45- moving casing；451- positioning pin
Slot；452- positions tongue；The inclined-plane 453-；51- bar；52- bar shaft；The second positioning pin of 521-；53- bar positioning region；
The 4th limit plate of 531-；The 4th limit hole of 532-；54- bar knob；The second retaining spring of 55-；56- fixed sleeving；561-
A positioning gap；The second locating notch of 562-；The gap 7-；91- contact switch；92- gas-detecting device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1-11, one aspect of the present invention provides a kind of fire-preventing check valve, including the first retaining mechanism and second
Retaining mechanism, first retaining mechanism and the second retaining mechanism are used to that valve block be prevented to open each independently.
Specifically, the fire-preventing check valve with valve block retaining mechanism of the invention, including the valve body 1 with exhaust outlet 11
With the valve block 3 being covered at exhaust outlet 11, valve block 3 has valve block connecting plate 36 and valve block shaft 31, and valve block shaft 31 can be rotated
Ground is connected to the valve block positioning region 34 being fixed on valve body 1 by fixed frame 14, and valve block closure bullet is arranged in valve block shaft 31
Spring 32, it is fixed that the upper surface of one end abutting valve block 3 of valve block closing spring 32 or valve block connecting plate 36 and the other end push against valve block
Position portion 34 is to oppress valve block 3 to exhaust outlet 11.When the fire-preventing check valve is in exhaust condition, pass through the air-flow of exhaust outlet 11
Valve block 3 can be blown and open, valve block 3 can be 40,45,50,55 or 60 degree around the rotatable maximum angle of valve block shaft 31,
It is preferred that 45 degree.
The fire-preventing check valve further includes temperature sensing element 2.The fixing end of the temperature sensing element 2 passes through 34 He of valve block positioning region
Fixed frame 14 is fixed on the valve body 1, and the free end of the temperature sensing element 2 is hook portion.In some cases, temperature sensing element 2
By hot melt piece connection between fixing end and free end, hot melt piece can be setting of being heated in the case where being equal to or higher than its operating temperature
The fuse metal piece of fusible disconnection after time or other hot melt material pieces.In other cases, the hook portion of temperature sensing element 2 by
Memorial alloy or bimetal leaf are made, and after heated setting time shape can occur for the hook portion in the case where being equal to or higher than its operating temperature
Become and straighten, and shape can be restored when being lower than its operating temperature.The operating temperature and setting time can be according to fire prevention
The working environment of check-valves and the conventional regulation of related fields and requirement arbitrarily determine, for example, the operating temperature can be example
Such as 70,80,90,100,110,120,130,140,150,160,170,180,190,200 degrees Celsius or higher, when for health
Between equal normal temperature environments when can be preferably 70 degrees Celsius, can be preferably 170 degrees Celsius when for hot environments such as kitchens；Institute
Stating setting time can be such as 5,10,20,30,40,50,60 seconds or longer, preferably 10 seconds；And the fuse metal piece or
Other hot melt material piece, memorial alloy or bimetal leafs are known commercial product, can be according to the operating temperature and setting
Time is selected.
First retaining mechanism includes compression bar 41 and compression bar positioning region 42, and the compression bar positioning region 42 passes through fixed frame 14
It is fixedly connected on valve body 1；The compression bar shaft 412 substantially vertical with compression bar 41 is connected in the connecting pin of the compression bar 41, it is described
Compression bar shaft 412 is rotationally connected with compression bar positioning region 42 and the compression bar 41 is made to have first position and the second position.Such as Fig. 1 institute
Show, when the compression bar 41 is in first position, the compression bar 41 be located at 3 switching station of valve block process the first track it
Outside, so that first retaining mechanism is unlocked, allow by the blowing valve block 3 of exhaust outlet 11 and around valve block
Shaft 31 rotates.When the compression bar 41 is in the second position, the pressure unit 411 positioned at 41 free end of compression bar is oppressed described
Oppression department 35 on 3 center outer surface of valve block, so that the valve block 3 is closed at the exhaust outlet 11 and first retaining mechanism
In locking state, even if there is the gas pressure from smoke exhaust ventilator or exhaust fan in valve body 1 at this time, valve block 3 will not be opened, from
And prevent high-temperature gas or flare outside valve body 1 from entering the inside of valve body 1.
First retaining mechanism further includes the compression bar rotation spring 43 as the first elastic element, compression bar rotation spring 43
One end be connected to the compression bar positioning region 42 and the other end is connected to compression bar 41 to apply compression bar 41 towards the oppression department
35 pressure.In some cases, compression bar positioning region 42 has the first limit plate 422 and the second limit plate 423, compression bar shaft
412 pass through and are determined by the second limit hole 427 on the first limit hole 426 and the second limit plate 423 on the first limit plate 422
Position, compression bar rotation spring 43 are socketed in the part in compression bar shaft 412 between first limit plate 422 and the second limit plate 423.Pressure
The other end of bar rotation spring 43 also applies the pressure towards compression bar positioning region 42 to compression bar 41, and compression bar 41 is compressed and positioned
On compression bar positioning region 42, to avoid compression bar shaft 412 along axial play, improve the stability of the rotation of compression bar 41 and
Compression bar 41 is improved to the pressure of oppression department 35.
When the temperature sensing element 2 is in the environment lower than its operating temperature, the temperature sensing element 2 is in undeformed the
One state and stop the compression bar 41, such as catch on compression bar 41 with its hook portion, so that first retaining mechanism keeps unlocked
Tight state.When the temperature sensing element 2, which is in, is equal to or higher than its operating temperature, the temperature sensing element 3 is changed into the of deformation
Two-state (such as the melting of fuse metal piece disconnects or bimetal leaf hook portion is stretched) is to discharge the compression bar 41, so that the pressure
Bar 41 rotates up to the pressure unit 411 around the compression bar shaft 412 under the driving of compression bar rotation spring 43 and oppresses the pressure
Compel portion 35 and first retaining mechanism is made to enter locking state.
In some cases, when the compression bar rotation spring 43 driving rotation of compression bar shaft 412 makes the compression bar 41 from the
When one position is moved to the second position, the first plane where the motion track of the pressure unit 411 is being closed with the valve block 3
When the exhaust outlet 11 it is vertical with 11 axis of exhaust outlet and pass through between the second plane of the oppression department 35 first folder
Angle is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5 degree, and the friendship of the compression bar shaft 412 and the second plane
Point the pressure unit 35 between line and the compression bar shaft 412 axis between the projection in the second plane second
Angle is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5 degree.Using the compression bar shaft 412 of such sloped position,
When compression bar 41 is in first position, pressure unit 411 can be made farther away from the position of valve block 3, to allow valve block 3 around valve block
Shaft 31 rotates greater angle, in favor of improving the air quantity being discharged from exhaust outlet 11 or reducing its wind pressure or windage, and when pressure
When bar 41 is in the second position, pressure unit 411 can be made to apply bigger pressure, the closer closing of valve block 3 row to oppression department 35
Thus port 11 further improves the effect of fire-preventing check valve fire-proof smoke insulation.
In some cases, locating recesses are equipped in the oppression department 35, the pressure unit 411 is equipped with protrusion, when described
When first retaining mechanism is in locking state, the recess is with protrusion cooperation so that the protrusion is limited to the recess
In, prevent pressure unit 411 from sliding off oppression department 35 on valve block 3 with this.For example, the protrusion is curved towards valve block by compression bar 11
It is curved at the recess is formed from valve block 3 to 1 inner recess of valve body.In some cases, exhaust outlet 11 is circle, and valve block 3 is
The circle that is adapted to exhaust outlet 11 and there is concentric ripple glaze, increases the intensity of valve block 3 with this, avoid processing and use
Deformation in journey；The oppression department 35 is located at the center of valve block 3, can apply essentially identical pressure to the periphery of valve block 3,
Improve valve block 3 to the sealing effect of exhaust outlet 11 with this.
In some cases, one end of the separate compression bar 41 of the compression bar shaft 412 is equipped with the first positioning pin 413 and covers
It is connected to moving casing 45；The side wall of the moving casing 45 is equipped with positioning cotter way 451 so that the first positioning pin 413 is limited in positioning
In cotter way 451, so that the moving casing 451 is only capable of the axial movement along compression bar shaft 412, and cannot be around compression bar shaft 412
Rotation；One end of the separate compression bar 41 of the moving casing 45 be equipped with positioning tongue 452, the compression bar positioning region 42 be additionally provided with
It is described to position the third limit hole 428 that tongue 452 cooperates only to allow positioning tongue when the compression bar 41 is in the second position
Portion 452 is inserted into third limit hole 428 and compression bar shaft 412 is prevented to rotate.The positioning tongue 452 and third limit hole 428
The shape of cross section cooperates and prevents the positioning tongue 452 from rotating in third limit hole 428.Such as positioning tongue
452 and the cross section of third limit hole 428 can be semicircle.
In some cases, the moving casing 56 is between the second limit plate 427 and third limit plate 428, and
The first retaining spring 44 being socketed in compression bar shaft 412 is equipped between the second limit plate 427 and moving casing 56, first is fixed
Position spring 44 is in the oppression state so that moving casing 56 is pressed to third limit plate 428.
In some cases, the fire-preventing check valve with valve block retaining mechanism further includes alarm device, the alarm
The contact switch 91 of device is fixed on the contact switch positioning region 425 on compression bar positioning region 42, and is located at third limit hole
At 428, so that the positioning tongue 452 oppresses contact switch 91 when the positioning tongue 452 is inserted into third limit hole 428
So that the alarm device issues alarm signal, so that user knows that the first retaining mechanism is in locking state.The alarm letter
Number it can be any appropriate light, image, text or voice signal.Particularly advantageous, when fire does not occur, the alarm
Compression bar 41 caused by signal can notify at once because of failure or accident is in the event of the second position, and user is reminded to find in time simultaneously
It is handled.For example, when high temperature kitchen temperature is higher than 150 degrees Celsius or when toilet temperature is higher than 70 degrees Celsius, temperature sensitive member
Part disconnects automatically, so that alarm device issues alarm signal.
In some cases, the fire-preventing check valve with valve block retaining mechanism further includes the second retaining mechanism, described
Second retaining mechanism includes bar 51 and bar positioning region 53, and the bar positioning region 53 is fixed on valve body 1 by valve seat 13,
The bar 51 is rotatably connected at bar positioning region 53 and the bar 51 is made to have the third place and the 4th position；It is described
One end of valve block shaft 31 is equipped with valve block rotating shaft winch 33 as the retainer for limiting the rotation of valve block shaft 31.When the gear
When bar 51 is in the third place, the bar 51 is in valve block 3 and is opened and closed turn that process middle valve plate shaft 31 drives crank 33 to rotate
To allow valve block shaft 31 to rotate except dynamic rail mark, so that the second retaining mechanism is unlocked.When the bar
51 in the 4th position and when valve block 3 is in closed state (state for closing exhaust outlet 11), and the bar 51 is in valve block 3 and opens
It closes within the rotary motion trace that process middle valve plate shaft 31 drives crank 33 to rotate and the valve block shaft 31 is stopped to rotate, so that
Second retaining mechanism is in locking state.By the way that the second retaining mechanism is arranged, it can be advantageous to user be allowed arbitrarily to hinder at any time
Only valve block 3 is opened, to close exhaust outlet 11.For example, the second retaining mechanism can be placed in locking when room is vacant for a long time
State closes exhaust outlet 11, it is ensured that realizes fire-proof smoke insulation effect；When needed, the second retaining mechanism can be opened manually.Due to
Second retaining mechanism can be functioned independently with the first retaining mechanism, and user can pass through without operating the first retaining mechanism
Valve block 3 is arbitrarily locked or discharged to second retaining mechanism, therefore ensures that the first retaining mechanism moment was in the state of response fire.
In some cases, second retaining mechanism further includes bar shaft 52 and fixed sleeving 56, the bar 51
It is fixed on one end of bar shaft 52 and is rotatablely connected by bar shaft 52 and bar positioning region 53, the fixed sleeving 56 is logical
It crosses valve seat 13 to be fixed on valve body 1, the other end of the bar shaft 56 penetrates rotatably fixed sleeving 56, and the bar turns
Axis 52 is equipped with the second positioning pin 521, and the fixed sleeving 56 enters circumferentially arranged with the second positioning pin 521 of permission and limits gear
The first locating notch 561 and the second locating notch 562 of bar shaft rotation；When the second positioning pin 521 enters the first locating notch
When 561, the bar 51 is in the third place；When the second positioning pin 521 enters the second locating notch 562, at the bar
In the 4th position.
In some cases, bar positioning region 53 is in the side towards exhaust duct of valve seat 13, bar shaft 52 it is another
End penetrates rotatably valve seat 13 and is fixed with bar knob 54；And the second retaining spring 55 is additionally provided in bar shaft 52
For oppressing the second positioning pin 521 to the first locating notch 561 or the second locating notch 562.Can have by bar knob 54
User-friendly second retaining mechanism sharply.
The application method of the fire-preventing check valve with valve block retaining mechanism, comprising:
Step S100, when the temperature of 2 local environment of temperature sensing element rises to the operating temperature equal to or higher than temperature sensing element 2
When, the temperature sensing element 2 is changed into the second state of deformation from undeformed first state and discharges the compression bar 41, described
Compression bar 41 under the driving of compression bar rotation spring 43 around the compression bar shaft 412 rotate up to the pressure unit 411 oppress it is described
The oppression department 35 of valve block 3, so that the valve block 3 closes the exhaust outlet 11 and locks first retaining mechanism never
State is changed into locking state；
Preferably, when the compression bar shaft 412 rotation makes the compression bar 41 turn to the second position from first position, institute
The first plane where the motion track of pressure unit 411 and the valve block 3 are stated when closing the exhaust outlet 11 and the exhaust
11 axis of mouth are vertical and are greater than 0 degree, for example, 2-8 degree by the first angle between the second plane of the oppression department 35, excellent
3-6 degree, more preferably from about 5 degree are selected, and between the compression bar shaft 412 and the intersection point and the pressure unit 411 of the second plane
The second angle of line and the axis of the compression bar shaft 412 between the projection in the second plane is greater than 0 degree, for example, 2-8
Degree, preferably 3-6 degree, more preferably from about 5 degree；
Preferably, described when the compression bar shaft 412 rotation makes the compression bar be moved to the second position from first position
Positioning tongue 452 also rotates with it, and when the compression bar 41 is in the second position, the positioning tongue 452 is inserted into third
Limit hole 428 is to prevent compression bar shaft 412 from rotating and the first retaining mechanism is made to be maintained at locking state；
Preferably, first retaining spring 44 oppresses the positioning tongue 452 and is inserted into third limit hole 428；
Preferably, when the positioning tongue 452 is inserted into third limit hole 428, the compressing of the positioning tongue 452 alarm dress
The contact switch 91 set is so that the alarm device issues alarm signal；
Preferably, the method also includes step S200, when the temperature of temperature sensing element 2 local environment is lower than temperature sensing element 2
Operating temperature when, the temperature sensing element 2 is set to undeformed first state, compressing compression bar rotation spring 43 makes described
Compression bar 41 rotates up to the temperature sensing element 2 around the compression bar shaft 412 and stops the compression bar 41, so that first lock
Tight mechanism is unlocked；
Preferably, step S200 further include: positioning tongue 452 is extracted into third limit hole 428, then oppresses compression bar rotation
Spring 43 rotates the compression bar 41 around the compression bar shaft 412；
Preferably, the method also includes step S300, when the bar 51 is in the third place and valve block 3 is in and closes
When conjunction state, 51 to the 4th position of bar is rotated to stop the valve block shaft 31 to rotate, so that at the second retaining mechanism
In locking state；
Preferably, step S300 further include: mobile bar shaft 52 is along its axis when the bar 51 is in the third place
To movement so that the second positioning pin 521 leaves the first locating notch 561, then rotating bar shaft 52 reaches the bar 51
4th position then moves bar shaft 52 and the second positioning pin 521 is made to enter the second locating notch 562；
Preferably, the method also includes step S400, when the bar 51 is in the 4th position and valve block 3 is in and closes
When conjunction state, the bar 51 is rotated to the third place to allow the valve block shaft 31 to rotate, so that at the second retaining mechanism
In non-locking state；
Preferably, step S400 further include: push bar shaft 52 along its axis when the bar 51 is in four positions
To movement so that the second positioning pin 521 leaves the second locating notch 562, then rotating bar shaft 52 reaches the bar 51
The third place then moves bar shaft 52 and the second positioning pin 521 is made to enter the first locating notch 561；
Preferably, in step S300 and/or step S400, using the second retaining spring 55 along the axial direction of bar shaft 52
The compressing of second positioning pin 521 is entered into the first locating notch 561 and/or the second locating notch 562；
Preferably, in step S300 and/or step S400, using bar knob 54 along the axial movement of bar shaft 52
Bar shaft 52 makes the second positioning pin 521 leave the first locating notch 561 or the second locating notch 562；Preferably, using gear
Bar knob 54 rotates bar shaft 52.
Refering to fig. 1-11, another aspect of the present invention provides a kind of fire-preventing check valve, including the valve with exhaust outlet 11
The inside circumference of body 1 and valve block 3 for covering the exhaust outlet 11, the valve block 3 has for being sealingly engaged the exhaust
Mouthful loop landing zones 39, the internal edge of loop landing zones 39 described in the interior lateral edge of the valve block 3 is at least partly connected with
To the guide card 37 of 1 internal stretch of valve body.If desired, sealing ring can be arranged at annular combined area 39.By the way that guide card 37 is arranged
It will can effectively be adhered to the greasy dirt of the inside of valve block 3 formed by pollutants such as oil droplets in the flue gas by valve body 1
It is channeled out the inner surface of valve block 3, avoids greasy dirt from accumulating in the lower edge of valve block 3 and the lower edge of exhaust outlet 11, thus effectively
The problem of avoiding the problem of greasy dirt hinders valve block 3 to completely close exhaust outlet 11 and greasy dirt bonding valve block 3 and exhaust outlet 11.
When the fire-preventing check valve is mounted on vertical exhaust duct side wall and the valve block 3 covers the exhaust outlet 11
When, in the guide card 37, the first part for being attached at least to the lowermost portion of the internal edge of the loop landing zones 39 is led
Piece 371 diagonally descends direction to extend into the inside of valve body 1；Preferably, first part's guide card 371 extends into valve body 1
Angle between internal direction and horizontal direction is 1-25 degree, for example, 1-20 degree, 1-15 degree, 2-12 degree, 3-10 degree, 4-8 degree,
5-6 degree.By the way that the lowermost portion of guide card 37 namely first part's guide card 371 to 1 inner inclination of valve body, are conducive on valve block 3
The greasy dirt gathered under the effect of gravity under the guidance of first part guide card 371 far from valve block 3 and exhaust outlet 11.
When the fire-preventing check valve is mounted on vertical exhaust duct side wall and the valve block 3 covers the exhaust outlet 11
When, only the guide card 37 is connected in the lower half portion of the internal edge of the loop landing zones 39；Preferably, described first
The left and right sides of guide card 371 is divided respectively to upwardly extend independently along the internal edge of the loop landing zones 39 no more than the valve
The center of piece 3.Only in the lower half portion of valve block 3, setting guide card 37 can be to avoid the windage that top half may cause.
When the valve block 3 covers the exhaust outlet 11, the guide card 37 extends into the maximum length inside valve body 1 not
More than the 120% of the radius of the valve block 3, such as 110%, 100%, 90%, 80%, 60%；Preferably, the first part
Guide card 371 extend into the minimum length inside valve body 1 not less than the valve block 3 radius 1%, such as 2%, 3%, 5%,
10%, 20%, 30%, 40%, 50%；Preferably, the guide card 37 is in 371 left and right sides of first part's guide card respective
Highest point 372 extends into the length of the part of valve inner not less than the highest point 372 and first part's guide card 371
Between vertical range and be no more than the valve block 37 radius 120%, such as 110%, 100%, 90%, 80%,
60%；Preferably, the guide card 37 highest point 372 respective in 371 left and right sides of first part's guide card extends into valve
The length of part inside body 1 is that the guide card 37 extends into maximum length inside valve body 1.As above guide card size as defined in
Guide card 37 can be made successfully to pass in and out exhaust outlet 11 during valve block 37 is opened and closed, and avoid touching valve body 1；In addition, as above
The length of defined first part's guide card 371 can be in the case where guaranteeing to export greasy dirt, first when valve block 3 being avoided to open as far as possible
The issuable windage of part guide card 371.
When the fire-preventing check valve is mounted on vertical exhaust duct side wall, the upper limb of the exhaust outlet 11 is to exhaust duct
Sidewall slope；Preferably, the angle of the 11 place plane of exhaust outlet and vertical direction is 1-30 degree, such as 5-25 degree, 10-20
Degree, about 15 degree；Preferably, the valve body 1 includes horizontally disposed straight drum part 12 and is bent up with what straight drum part 12 was connected
Bent bent tube section 19, the exhaust outlet 11 are set to the end of the bent tube section 19, and the plane where the exhaust outlet 11 is hung down
Directly in the axis of 19 end of bent tube section, the axis of the axis of the straight drum part 12 and 19 end of bent tube section it
Between angle be 1-30 degree, such as 5-25 degree, 10-20 degree, about 15 degree.As above valve body 1 as defined in and exhaust outlet 11 are conducive to lead
Piece 37 exports greasy dirt and smoothly disengaging exhaust outlet 11, is also beneficial to that flue gas is discharged into exhaust duct upwards by fire-preventing check valve.
When the fire-preventing check valve is mounted on vertical exhaust duct side wall, the valve block 3 by valve block shaft 31 with
The valve body 1 is rotationally connected with the lower edge of the exhaust outlet 11；Preferably, the center of gravity of the valve block 3 is located at valve block shaft 31
The side of close valve body 1 upper or positioned at valve block shaft 31 or the side of the separate valve body 1 positioned at valve block shaft 31；It is excellent
Selection of land, the side that the center of gravity of the valve block 3 is located at the close valve body 1 of valve block shaft 31 to cover the row when the valve block 3
The valve block 3 swings to the exhaust outlet 11 under the effect of gravity when port 11, is conducive to keep 3 couples of valve block rows at the time of emergency
The closed state of port 11.
When the valve block 3 is opened, gap 7 described in 37 block of guide card between valve block 3 and the exhaust outlet 11
At least partly；Preferably, the gap 7 described in 37 block of guide card between valve block 3 and the exhaust outlet 11 from the exhaust
The lower edge of mouth 11 is to the guide card 37 in the respective highest point 372 in 371 left and right sides part of first part's guide card；It is preferred that
Ground, the portion no more than 7 center of valve block in the gap 7 described in 37 block of guide card between valve block 3 and the exhaust outlet 11
Point.When valve block 3 is opened, 37 block of the guide card lower half portion in gap 7 is beneficial to prevent the air-flow from exhaust duct middle and lower part
Fire-preventing check valve exhaust is interfered, the interference is, for example, that exhaust duct air-flow may generate flow-disturbing in exhaust ports and increase fire prevention
The exhaust resistance of check-valves, or may flow backward and enter fire-preventing check valve.
The protrusion 38 for water conservancy diversion, the edge and the valve block of the protrusion 38 are additionally provided in the loop landing zones 39
3 inner surfaces connect, and the protrusion 3 has peak potion 381, the first spine 382, the second spine 383, third spine 384, the first slope
Portion 385, the second slope portion 386 and third slope portion 387, the peak potion 381 are located at 3 center of middle part and valve block of the protrusion 3
Top, first spine 382 and the second spine 383 extend to two sides from the peak potion 381 and are connected on the inside of the valve block
Surface, third spine 384 extend downwardly from the peak potion 381 and are connected on the valve block inner surface, first slope portion 385
It is connected on the inner surface of the first spine 382, the second spine 383 and the valve block 3, second slope portion 386 is connected on first
The inner surface of spine 382, third spine 384 and the valve block 3, third slope portion 387 are connected on the second spine 383,
The inner surface of three spines 384 and the valve block 3；Preferably, 3 middle part of valve block is formed by bending to the direction far from valve body 1
Recess portion, and the protrusion 38 is located at the middle part of the recess portion；Preferably, the inner surface of the protrusion 38 and the valve block 3
Between form cavity；Preferably, plane where the edge of the prominent institute's valve block 3 of the peak potion 381, and the height of protrusion is not
Greater than the thickness of the cavity.As above protrusion 38 as defined in can guide the air-flow from valve body 1 along each slope portion to two sides and
Top flowing, to reduce the windage of the generation of valve block 3.
Gathering for valve block and exhaust ports greasy dirt can be effectively prevented in above-mentioned fire-preventing check valve of the invention, reduces exhaust resistance
Power and the interference for avoiding air-flow in exhaust duct.
It in some cases, further include being arranged in valve seat in each embodiment of the fire-preventing check valve of aforementioned present invention
Rectification shield 16 on 13, when fire-preventing check valve installation is with vertical exhaust duct side wall, rectification shield 16 in it is band-like simultaneously
And both ends are connected to the left and right sides of 13 upper valve body 1 of valve seat, so that rectification shield 16 is horizontal around valve block 3 and optional
First retaining mechanism and the second retaining mechanism, rectification shield 16 allow valve block 3 to be located at certainly around valve block shaft 31 at a distance from valve block 3
The position of exhaust outlet 11 rotates at least 40 degree, for example, at least 45 degree, at least 50 degree, at least 60 degree to the direction far from exhaust outlet 11
Deng.The lower end for rectifying the separate valve seat 13 of shield 16 can be bent inclination (tightening) to 13 direction of valve seat and make to rectify shield with this
16 form the streamlined contour for being similar to inversed taper platform shape that lower ending opening is less than upper end opening, are conducive to reduce fire-preventing check valve pair
The resistance and disturbance that gas flows in exhaust uptake, and be conducive to exhaust resistance when flue gas is discharged to exhaust duct in fire-preventing check valve
Reduction.
In some cases, it is additionally provided with fixing clamp on valve seat 13, for fire-preventing check valve to be installed on to the side wall of exhaust duct
On exhaust outlet at.
In some cases, strainer 17 is additionally provided in the air hose of one end of the separate exhaust outlet 11 of valve body 1.Strainer 17 can be with
It is that can adsorb those of greasy dirt, to be filtered out in advance into pollutants such as greasy dirts in the flue gas of valve body 1；Alternatively, strainer 17
Can be those can prevent the animals such as cockroach or mouse by those of.In some cases, in strainer 17 and exhaust outlet 11
Between valve body 1 on be additionally provided with gas-detecting device, for monitor through strainer 17 filtering after flue gas air pressure and pollutant kind
And content, the filter capacity and stopping state of strainer 17 are judged with this, so as to remind user strainer 17 block or fail when into
Row is timely replaced.For example, gas-detecting device can be smoke sensor device, danger signal is issued when oil smoke concentration is excessively high,
Issuing when concentration is normal is green, and when concentration moderate issues yellow signal.
In some cases, one end of the separate exhaust outlet 11 of valve body 1 be also connected with blast connection 18 for connect pumping
The exhaust equipments such as kitchen ventilator or air exhauster.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of fire-preventing check valve with valve block retaining mechanism, including the valve body with exhaust outlet and be covered on exhaust ports and
With the valve block of valve body rotation connection, which is characterized in that further include the first retaining mechanism, temperature sensing element and the first elastic element, institute
Stating the first retaining mechanism includes compression bar and compression bar positioning region, and the compression bar positioning region is fixedly connected on valve body；In the compression bar
Connecting pin is connected with compression bar shaft, and the compression bar shaft is rotationally connected with compression bar positioning region and the compression bar is made to have first position
The second position and；When the compression bar is in first position, the compression bar is located at the first track of valve block switching station process
Except, so that first retaining mechanism is unlocked；When the compression bar is in the second position, it is located at the compression bar
Free end or close to the free end pressure unit oppress the valve block outer surface on oppression department so that the valve block close
The exhaust outlet and first retaining mechanism is in locking state；The temperature sensing element is fixed on the valve body, and described first
One end of elastic element is connected to the compression bar positioning region and the other end is connected to compression bar to apply compression bar towards the compressing
The pressure in portion；When the temperature sensing element is in the operating temperature lower than temperature sensing element, the temperature sensing element is in undeformed
First state and stop the compression bar, so that first retaining mechanism keeps non-locking state；At the temperature sensing element
When being equal to or higher than the operating temperature of temperature sensing element, it is described to discharge that the temperature sensing element is changed into the second state of deformation
Compression bar, so that the compression bar rotates up to pressure unit compressing institute around the compression bar shaft under the driving of the first elastic element
It states oppression department and first retaining mechanism is made to enter locking state.
2. the fire-preventing check valve with valve block retaining mechanism according to claim 1, which is characterized in that when the compression bar turns
When axis rotation makes the compression bar be moved to the second position from first position, the first plane where the motion track of the pressure unit
Second plane vertical with the exhaust outlet axis and by the oppression department when closing the exhaust outlet with the valve block it
Between the first angle be greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5 degree, and the compression bar shaft and second
The axis of line and the compression bar shaft between the intersection point of plane and the pressure unit is between the projection in the second plane
Second angle is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5 degree.
3. the fire-preventing check valve according to claim 1 or 2 with valve block retaining mechanism, which is characterized in that in the pressure
The portion of compeling is equipped with locating recesses, and the pressure unit is equipped with protrusion, when first retaining mechanism is in locking state, the recess
Cooperate with the protrusion so that the protrusion to be limited in the recess.
4. the fire-preventing check valve with valve block retaining mechanism as claimed in one of claims 1-3, which is characterized in that institute
The one end for stating the separate compression bar of compression bar shaft is equipped with the first positioning pin and is socketed with moving casing；The side wall of the moving casing
Equipped with positioning cotter way the first positioning pin to be limited in positioning cotter way, so that the moving casing is only capable of the axis along compression bar shaft
To movement, and cannot be rotated around compression bar shaft；One end of the separate compression bar of the moving casing is equipped with positioning tongue, the compression bar
Positioning region is additionally provided with the third limit hole with the positioning engaged so as to the only permission when the compression bar is in the second position
Positioning tongue insertion third limit hole simultaneously prevents compression bar shaft from rotating.
5. the fire-preventing check valve with valve block retaining mechanism according to claim 4, which is characterized in that the compression bar positioning
Portion have the first limit plate, the second limit plate and third limit plate, the compression bar shaft pivotally sequentially pass through and
It is limited to the first limit hole of the first limit plate and the second limit hole of the second limit plate, the moving casing is located at the second limit
Between plate and third limit plate, the first retaining spring is socketed in compression bar shaft and between the second limit plate and moving casing
To oppress moving casing to third limit plate.
6. with the fire-preventing check valve of valve block retaining mechanism according to any one of claim 3-5, which is characterized in that also
Including alarm device, the contact switch of the alarm device is set at third limit hole, when the positioning tongue is inserted into third
When limit hole, the positioning tongue compressing contact switch is so that the alarm device issues alarm signal.
7. the fire-preventing check valve with valve block retaining mechanism as claimed in one of claims 1-6, which is characterized in that also
Including the second retaining mechanism, second retaining mechanism includes bar and bar positioning region, and valve is fixed in the bar positioning region
On body, the bar is rotatably connected at bar positioning region and the bar is made to have the third place and the 4th position；It is described
Valve block is fixedly connected with valve block shaft and is rotatablely connected by valve block shaft and valve body, and one end of the valve block shaft, which is equipped with, to be used
In the retainer of limitation valve block shaft rotation；When the bar is in the third place, the bar is in valve block opening and closing process
To allow valve block shaft to rotate except the rotary motion trace that middle valve plate shaft drives retainer to rotate, so that the second retaining mechanism is in
Non- locking state；When the bar is in the 4th position and valve block in the closure state, the bar is in valve block and was opened and closed
Journey middle valve plate shaft drives within the rotary motion trace of retainer rotation and the valve block shaft is stopped to rotate, so that the second locking
Mechanism is in locking state；Preferably, the retainer is the crank for being set to the valve block roller end.
8. the fire-preventing check valve with valve block retaining mechanism according to claim 7, which is characterized in that further include that bar turns
Axis and fixed sleeving, the bar are fixed on one end of bar shaft and are rotatablely connected by bar shaft and bar positioning region,
The fixed sleeving is fixed on valve body, and the other end of the bar shaft penetrates rotatably fixed sleeving, and the bar turns
Axis is equipped with the second positioning pin, and the fixed sleeving, which enters circumferentially arranged with the second positioning pin of permission and limits bar shaft, to be rotated
The first locating notch and the second locating notch；When the second positioning pin enters the first locating notch, the bar is in third
Position；When the second positioning pin enters the second locating notch, the bar is in the 4th position.
9. the fire-preventing check valve with valve block retaining mechanism according to claim 8, which is characterized in that further include valve seat and
Bar knob, valve seat are fixedly connected with the valve body for valve body to be fixed on exhaust duct, and bar positioning region is located at the direction row of valve seat
The side of air flue, the other end of bar shaft penetrate rotatably valve seat and are fixed with bar knob；Preferably, bar shaft
On be additionally provided with the second retaining spring for oppressing the second positioning pin to the first locating notch and/or the second locating notch.
10. a kind of user of the fire-preventing check valve with valve block retaining mechanism as claimed in one of claims 1-9
Method, comprising:
Step S100, it is described when the temperature of temperature sensing element local environment rises to the operating temperature equal to or higher than temperature sensing element
Temperature sensing element is changed into the second state of deformation from undeformed first state and discharges the compression bar, and the compression bar is first
The oppression department that the pressure unit oppresses the valve block is rotated up to around the compression bar shaft under the driving of elastic element, so that described
Valve block closes the exhaust outlet and the first retaining mechanism never locking state is made to be changed into locking state；
Preferably, when compression bar shaft rotation makes the compression bar be moved to the second position from first position, the pressure unit
Motion track where the first plane it is vertical and logical with the exhaust outlet axis when closing the exhaust outlet with the valve block
The first angle crossed between the second plane of the oppression department is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5
Degree, and the axis of the line between the compression bar shaft and the intersection point and the pressure unit of the second plane and the compression bar shaft
The second angle between the projection in the second plane is greater than 0 degree, for example, 2-8 degree, preferably 3-6 degree, more preferably from about 5 degree；
Preferably, when compression bar shaft rotation makes the compression bar be moved to the second position from first position, the positioning tongue
Portion also rotates with it, and when the compression bar is in the second position, and the positioning tongue insertion third limit hole is to prevent
Compression bar shaft rotates and the first retaining mechanism is made to be maintained at locking state；
Preferably, first retaining spring oppresses the positioning tongue and is inserted into third limit hole；
Preferably, when the positioning tongue is inserted into third limit hole, the contact switch of the positioning tongue compressing alarm device
So that the alarm device issues alarm signal；
Preferably, the method also includes step S200, when the temperature of temperature sensing element local environment is lower than the movement of temperature sensing element
When temperature, the temperature sensing element is set to undeformed first state, the first elastic element of compressing makes the compression bar around institute
It states compression bar shaft and rotates up to the temperature sensing element blocking compression bar, do not locked so that first retaining mechanism is in
State；
Preferably, step S200 further include: positioning tongue is extracted into third limit hole, then oppress the first elastic element make it is described
The compression bar is rotated around the compression bar shaft；
Preferably, the method also includes step S300, when the bar is in the third place and valve block is in closed state
When, the bar is rotated to the 4th position to stop the valve block shaft to rotate, so that the second retaining mechanism is in locking state；
Preferably, step S300 further include: mobile bar shaft makes the second positioning pin when the bar is in the third place
The first locating notch is left, then rotating bar shaft makes the bar reach the 4th position, then moves bar shaft and makes
Second positioning pin enters the second locating notch；
Preferably, the method also includes step S400, when the bar is in the 4th position and valve block is in closed state
When, the bar is rotated to the third place to allow the valve block shaft to rotate, so that the second retaining mechanism, which is in, does not lock shape
State；
Preferably, step S400 further include: push bar shaft to make along its axial movement when the bar is in four positions
It obtains the second positioning pin and leaves the second locating notch, then rotating bar shaft makes the bar reach the third place, then moves
Bar shaft makes the second positioning pin enter the first locating notch；
Preferably, in step S300 and/or step S400, second is determined along the axial of bar shaft using the second retaining spring
Position pin compressing enters the first locating notch and/or the second locating notch；
Preferably, in step S300 and/or step S400, using bar knob along the axial movement bar shaft of bar shaft
So that the second positioning pin leaves the first locating notch or the second locating notch；Preferably, bar shaft is rotated using bar knob.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285573.8A CN109027271B (en) | 2018-10-31 | 2018-10-31 | Fireproof check valve with valve plate locking mechanism and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285573.8A CN109027271B (en) | 2018-10-31 | 2018-10-31 | Fireproof check valve with valve plate locking mechanism and use method thereof |
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| Publication Number | Publication Date |
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| CN109027271A true CN109027271A (en) | 2018-12-18 |
| CN109027271B CN109027271B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811285573.8A Active CN109027271B (en) | 2018-10-31 | 2018-10-31 | Fireproof check valve with valve plate locking mechanism and use method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496339A (en) * | 2019-08-20 | 2019-11-26 | 陶水芳 | A kind of adjustable airborne Flame arrester of hole |
| CN110594455A (en) * | 2019-09-25 | 2019-12-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
| CN111609207A (en) * | 2019-02-22 | 2020-09-01 | 优奥玛塑胶部件(昆山)有限公司 | Valve core for fluid control valve and fluid control valve |
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| CN105840843A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Built-in locating structure of high temperature valve |
| CN207527092U (en) * | 2017-10-13 | 2018-06-22 | 杭州老板电器股份有限公司 | A kind of new-type fire-preventing check valve |
| CN107740868A (en) * | 2017-11-20 | 2018-02-27 | 郭弘 | A kind of butterfly valve with pre- decompression function |
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| CN111609207A (en) * | 2019-02-22 | 2020-09-01 | 优奥玛塑胶部件(昆山)有限公司 | Valve core for fluid control valve and fluid control valve |
| CN110496339A (en) * | 2019-08-20 | 2019-11-26 | 陶水芳 | A kind of adjustable airborne Flame arrester of hole |
| CN110594455A (en) * | 2019-09-25 | 2019-12-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
| CN110594455B (en) * | 2019-09-25 | 2021-10-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
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| CN109027271B (en) | 2023-07-28 |
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