CN109990120B - Double-valve-plate flue fireproof check valve - Google Patents
Double-valve-plate flue fireproof check valve Download PDFInfo
- Publication number
- CN109990120B CN109990120B CN201711478540.0A CN201711478540A CN109990120B CN 109990120 B CN109990120 B CN 109990120B CN 201711478540 A CN201711478540 A CN 201711478540A CN 109990120 B CN109990120 B CN 109990120B
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- China
- Prior art keywords
- valve
- block
- movable block
- fixed
- compression bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 35
- 238000007906 compression Methods 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 7
- 239000006233 lamp black Substances 0.000 description 13
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 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
- F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
- F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model provides a two valve block flue fire prevention check valves, including valve body, valve block axle, first valve block and second valve block, install fixed block and movable block on the fixed bolster of valve body, still including making the movable block keep to the elastic component of fixed block removal trend and the temperature sensing element that prevents the movable block to the fixed block removal, install two sets of depression bar subassemblies of locating the fixed bolster both sides respectively between fixed block and movable block, two sets of depression bar subassemblies can open and compress tightly first valve block and second valve block in step under the drive of movable block, also can close and relieve the effort to first valve block and second valve block in step. The invention has the advantages that: under the state of the flue on fire, the movable block can be quickly separated from the temperature sensing element and drives the pressure bar component to synchronously open and then close the first valve plate and the second valve plate, and under the normal use state, the movable block is limited on the temperature sensing element, so that the acting force on the valve plate can be relieved after the pressure bar component is folded, and the valve plate can be normally opened and closed.
Description
Technical Field
The invention relates to a fireproof valve, in particular to a double-valve-plate flue fireproof check valve.
Background
In a kitchen using a longitudinal public flue, in order to prevent the oil smoke in the flue from flowing back into the kitchen, a device such as a flue check valve is arranged between an outlet pipe orifice of the range hood and the public flue. The prior flue check valve generally comprises a lampblack channel formed by a shell, the lampblack channel is provided with an air inlet and an air outlet which are opposite, the air inlet is connected with an air outlet pipe orifice of the smoke exhaust ventilator, the air outlet extends into a public lampblack channel, a valve plate which can be opened and closed is arranged at the air outlet of the lampblack channel, and the valve plate is rotatably arranged on the inner wall of the lampblack channel through a valve plate rotating shaft which is horizontally arranged. When the range hood is not used, the valve plate is in a closed position due to self gravity, and the valve plate covers the air outlet part; when the range hood is used, the valve plate is in an open position and is far away from the air outlet. Because a plurality of households use one longitudinal public flue gas channel, once one household fires, a large amount of high-temperature harmful gas gushes into the longitudinal public flue gas channel, if the valve plate in the flue check valve is not closed in time at this moment, a large amount of high-temperature harmful gas can enter the household of the user who is using the lampblack absorber through the lampblack channel of the flue check valve, thereby threatens the life safety of the households.
Various fireproof check valves with double valve plates are disclosed in the prior art, such as a flue check fireproof valve disclosed in Chinese patent publication No. 200910017260.9 (issued publication No. CN 101608702B), wherein the flue check fireproof valve comprises a lampblack channel formed by a shell, the lampblack channel is provided with an air inlet and an air outlet which are opposite, the lampblack channel is internally provided with valve plates which are two oppositely arranged, the valve plates are rotatably arranged in the lampblack channel through a valve plate rotating shaft, one end of the lampblack channel, which is close to the air inlet, is provided with a blocking body which enables the two valve plates to be opened only in the air outlet direction, a connecting strip which is longitudinally arranged and divides the air inlet into two parts is arranged on the side, which is close to the air inlet, of the lampblack channel, and a high-temperature closing device which can forcedly close the valve plates is arranged on the side, which faces the air outlet, of the connecting strip. As another example, in the "fire damper for range hood" disclosed in chinese patent application No. 201510205944.7 (application publication No. CN 104819324 a), the fire damper also has two valve plates, and a first torsion spring and a second torsion spring are mounted on a mounting shaft inside the oil smoke channel, where the first torsion spring always acts on the rotary valve plate and makes the air inlet have a tendency to close, and the second torsion spring acts on the rotary valve plate and makes the air inlet tend to close only when the temperature control plate fuses. When the double-valve-plate check valve works, the two valve plates cannot be opened and closed synchronously. In view of the above, there is a need for further improvements in the existing double-valve-plate fire-protection check valve structure.
Disclosure of Invention
The invention aims to solve the technical problem of providing the double-valve-plate flue fireproof check valve capable of ensuring that two valve plates can be synchronously opened and closed.
The technical scheme adopted for solving the technical problems is as follows: the double-valve-block flue fireproof check valve comprises a valve body, a valve block shaft, a first valve block and a second valve block, wherein the valve block shaft is arranged on the valve body, and the first valve block and the second valve block are rotationally connected to two sides of the valve block shaft, and the double-valve-block flue fireproof check valve is characterized in that: the valve body is characterized in that a fixed support is further arranged on the valve body, a fixed block and a movable block are arranged on the fixed support, the valve body further comprises an elastic piece which enables the movable block to keep moving towards the fixed block and a temperature sensing element which prevents the movable block from moving towards the fixed block, two groups of pressure bar components which are respectively arranged on two sides of the fixed support are arranged between the fixed block and the movable block, the two groups of pressure bar components can be synchronously opened under the driving of the movable block to press the first valve block and the second valve block, and can be synchronously closed to release acting force on the first valve block and the second valve block.
The compression bar assembly may have various structures, and preferably, each group of compression bar assemblies includes a first compression bar and a second compression bar, a first end of the first compression bar is hinged to the fixed block, a first end of the second compression bar is hinged to the movable block, and a second end of the first compression bar is hinged to a second end of the second compression bar.
In order to enable the pressure bar assembly to reliably press the valve plates and separate from the valve plates, the pressure bar assembly can act on the central areas of the first valve plate and the second valve plate in an opening state, and the first pressure bar and the second pressure bar are both close to the fixing support in a closing state.
The elastic piece can have various structures, preferably, the elastic piece is a locking spring, and two ends of the locking spring are respectively and fixedly connected to the fixed block and the movable block.
Preferably, the temperature sensing element is a temperature control sheet capable of deforming or fusing at high temperature.
In order to limit the movement of the movable block, a limiting block used for limiting the movement of the movable block is arranged on the fixed support, and the limiting block is arranged between the fixed block and the movable block.
Further preferably, the fixing support is in a rod shape, the fixing support and the valve plate shaft are both arranged in the middle of the valve body, the fixing support and the valve plate shaft are parallel to each other, and the compression bar assembly is arranged between the fixing support and the valve plate shaft in a closed state.
In order to enable the valve block to be sealed with the valve body when the valve block is normally closed, a magnet capable of sucking the valve block is arranged on the valve body, and sealing rings for sealing the first valve block and the second valve block are also arranged on the valve body.
Further preferably, the maximum opening angle of the first valve plate and the second valve plate is 90 °.
As a preferable aspect of any one of the foregoing, the valve plate shaft is vertically disposed, and the first valve plate and the second valve plate are laterally opened and closed, and a torsion spring that maintains the first valve plate and the second valve plate in a closing trend is installed on the valve plate shaft.
Compared with the prior art, the invention has the advantages that: according to the double-valve-plate flue fireproof check valve, under the flue fire state, the movable block can be quickly separated from the temperature sensing element to move towards the fixed block, and the movable block drives the pressure bar assembly to be synchronously opened and then to close the first valve plate and the second valve plate.
Drawings
FIG. 1 is a schematic view of a structure of an embodiment of the present invention in a normally closed state;
FIG. 2 is a schematic view of the structure of the embodiment of the present invention in a normal open state;
FIG. 3 is a schematic view of the structure of the flue in a fire state according to the embodiment of the invention;
FIG. 4 is a schematic view of a compression bar assembly according to an embodiment of the present invention in an open state;
FIG. 5 is a schematic view of a compression bar assembly according to the present invention in a closed state.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 5, the dual-valve-plate flue fireproof check valve in the present embodiment includes a valve body 1, a valve plate shaft 2, a first valve plate 3, a second valve plate 4, a fixed bracket 5, a fixed block 6, a movable block 7, a compression bar assembly 8, a locking spring 9, a temperature control plate 10, a stopper 11, and a torsion spring 12.
The valve block axle 2 is vertically installed in the centre of valve body 1, and first valve block 3 and second valve block 4 symmetry set up in the both sides of valve block axle 2 and rotate and connect on valve block axle 2, install the torsional spring 12 that makes first valve block 3 and second valve block 4 keep having the closure trend on valve block axle 2, from this, first valve block 3 and second valve block 4 can realize the side direction and open and close. In addition, in order to make the valve block close more reliably, a magnet capable of attracting the first valve block 3 and the second valve block 4 is mounted on the valve body 1, and a sealing ring for sealing the first valve block 3 and the second valve block 4 is also mounted on the valve body 1.
The fixing support 5 of the embodiment is in a rod-shaped structure with a square section, and the fixing support 5 is positioned in the middle of the valve body 1 and is parallel to the valve plate shaft 2. The fixed block 6 and the movable block 7 are arranged on the fixed support 5 and distributed along the length direction of the fixed support 5, wherein the fixed block 6 is arranged at one end of the fixed support 5, the temperature control sheet 10 is arranged at the other end of the fixed support 5, the locking spring 9 is sleeved on the fixed support 5, one end of the locking spring 9 is connected to the fixed block 6, and the other end of the locking spring 9 is connected to the movable block. The limiting block 11 is arranged on the fixed support 5, and the limiting block 11 is arranged between the fixed block 6 and the movable block 7 and is used for limiting the movement of the movable block 7.
The locking spring 9 is a tension spring and always has the trend of pulling the movable block 7 and enabling the movable block 7 to move towards the fixed block 6, when the temperature control sheet 10 is not deformed or fused, the movable block 7 is limited on the temperature control sheet 10, at the moment, the movable block 7 is located at the position farthest from the fixed block 6, the locking spring 9 is in the longest stretching state, and the pulling force of the locking spring 9 on the movable block 7 is the largest. When the temperature control sheet 10 deforms or fuses due to high temperature, the movable block 7 is separated from the temperature control sheet 10, and the movable block 7 moves towards the fixed block 6 under the action of the tension of the locking spring 9 until the movable block 7 moves to collide with the limiting block 11 to stop moving.
The two groups of compression bar assemblies 8 are respectively arranged at two sides of the fixed bracket 5, namely, the first valve plate 3 and the second valve plate 4 are respectively corresponding to one group of compression bar assemblies 8. Each group of compression bar assemblies 8 comprises a first compression bar 81 and a second compression bar 82, the first end of the first compression bar 81 is hinged with the fixed block 6, the first end of the second compression bar 82 is hinged with the movable block 7, and the second end of the first compression bar 81 and the second end of the second compression bar 82 are mutually hinged, so that the two groups of compression bar assemblies 8 can be synchronously opened and synchronously closed under the drive of the movable block 7. When the valve is synchronously opened, the compression bar assembly 8 acts on the central areas of the first valve plate 3 and the second valve plate 4, and the contact surface between the compression bar assembly 8 and the first valve plate 3 and the second valve plate 4 is larger, so that the first valve plate 3 and the second valve plate 4 can be reliably closed; when the valve is synchronously closed, the first pressure rod 81 and the second pressure rod 82 are close to the fixed support 5, and at the moment, the pressure rod assembly 8 is hidden between the fixed support 5 and the valve plate shaft 2, so that the acting force on the first valve plate 3 and the second valve plate 4 is relieved, and the first valve plate 3 and the second valve plate 4 can be normally opened.
The working process of the fireproof check valve is as follows:
under normal operating condition, temperature control piece 10 does not receive the high temperature and can not produce the deformation, movable block 7 is spacing on temperature control piece 10 and static for depression bar subassembly 8 is in closed condition, and depression bar subassembly 8 can not produce the interference to opening of valve block, at this moment, if range hood work, then first valve block 3 and second valve block 4 can normally open, and maximum opening angle is 90, when range hood is not working, magnet on valve body 1 will first valve block 3 and second valve block 4 hold to keep apart user's flue and public flue or external world under the effect of sealing washer, prevent flue smell.
Under the flue state of firing, the temperature control piece 10 produces deformation or fusing because of the high temperature, can release the movable block 7 that restricts wherein, the movable block 7 removes to fixed block 6 under the effect of locking spring 9, and depression bar subassembly 8 is opened gradually along with the removal of movable block 7, until movable block 7 collides with stopper 11, and at this moment, depression bar subassembly 8 is in the state of fully opening and compresses tightly first valve block 3 and second valve block 4, makes the valve block force close to close the fire prevention valve passageway, cut off range hood tobacco pipe and public flue, prevent that the tobacco pipe from firing. The locking spring 9 is still in a stretched state at this time, so that the valve plate can be reliably closed.
Claims (9)
1. The utility model provides a two valve block flue fire prevention check valves, includes valve body (1), valve block axle (2), first valve block (3) and second valve block (4), valve block axle (2) are installed on valve body (1), first valve block (3) and second valve block (4) rotate and connect the both sides of valve block axle (2), its characterized in that: still install fixed bolster (5) on valve body (1) install fixed block (6) and movable block (7) on fixed bolster (5), still including making movable block (7) keep to the elastic component of fixed block (6) removal trend and the temperature sensing element that prevents movable block (7) to fixed block (6) install two sets of depression bar subassembly (8) of locating fixed bolster (5) both sides respectively between fixed block (6) and movable block (7), two sets of depression bar subassembly (8) can open and compress tightly first valve block (3) and second valve block (4) under the drive of movable block (7) simultaneously, also can close and relieve the effort to first valve block (3) and second valve block (4) simultaneously, first valve block (3) and second valve block (4) are opened and are closed in the side direction valve block axle (2) are installed and are kept torsion spring (12) of closed trend to first valve block (3) and second valve block (4).
2. The double-valve stack fire check valve of claim 1, wherein: each group of compression bar components (8) comprises a first compression bar (81) and a second compression bar (82), wherein the first end of the first compression bar (81) is hinged with the fixed block (6), the first end of the second compression bar (82) is hinged with the movable block (7), and the second end of the first compression bar (81) and the second end of the second compression bar (82) are mutually hinged.
3. The double-valve stack fire check valve of claim 2, wherein: the compression bar assembly (8) can act on the central areas of the first valve plate (3) and the second valve plate (4) in an opening state, and the first compression bar (81) and the second compression bar (82) are both close to the fixed support (5) in a closing state of the compression bar assembly (8).
4. The double-valve stack fire check valve of claim 1, wherein: the elastic piece is a locking spring (9), and two ends of the locking spring (9) are respectively and fixedly connected to the fixed block (6) and the movable block (7).
5. The double-valve stack fire check valve of claim 1, wherein: the temperature sensing element is a temperature control sheet (10) which can deform or fuse at high temperature.
6. The double-valve stack fire check valve of claim 1, wherein: a limiting block (11) for limiting the movement of the movable block (7) is arranged on the fixed support (5), and the limiting block (11) is arranged between the fixed block (6) and the movable block (7).
7. The double-valve stack fire check valve of claim 1, wherein: the fixed support (5) is in a rod shape, the fixed support (5) and the valve plate shaft (2) are arranged in the middle of the valve body (1), the fixed support (5) and the valve plate shaft (2) are parallel to each other, and the pressure bar assembly (8) is arranged between the fixed support (5) and the valve plate shaft (2) in a closed state.
8. The double-valve stack fire check valve of claim 1, wherein: the valve body (1) is provided with a magnet capable of sucking the first valve plate (3) and the second valve plate (4), and the valve body (1) is also provided with a sealing ring for sealing the first valve plate (3) and the second valve plate (4).
9. The double-valve stack fire check valve of claim 1, wherein: the maximum opening angle of the first valve plate (3) and the second valve plate (4) is 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478540.0A CN109990120B (en) | 2017-12-29 | 2017-12-29 | Double-valve-plate flue fireproof check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711478540.0A CN109990120B (en) | 2017-12-29 | 2017-12-29 | Double-valve-plate flue fireproof check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990120A CN109990120A (en) | 2019-07-09 |
| CN109990120B true CN109990120B (en) | 2024-01-16 |
Family
ID=67108941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711478540.0A Active CN109990120B (en) | 2017-12-29 | 2017-12-29 | Double-valve-plate flue fireproof check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990120B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201443628U (en) * | 2009-07-23 | 2010-04-28 | 韩文强 | Flue fire-resisting-resisting check valve |
| CN202284667U (en) * | 2011-11-01 | 2012-06-27 | 韩文强 | Check fire resisting damper for flue |
| CN203248797U (en) * | 2013-05-25 | 2013-10-23 | 韩文强 | Flue non-return fire damper |
| CN203453554U (en) * | 2013-08-29 | 2014-02-26 | 周建达 | Fireproof check valve of exhaust pipe opening of range hood |
| CN203797087U (en) * | 2014-04-22 | 2014-08-27 | 黄河科技学院 | Rotating shaft mounting structure ofhand-operated check valve forpublic flue duct |
| CN207648210U (en) * | 2017-12-29 | 2018-07-24 | 宁波方太厨具有限公司 | A kind of double valve sheet fireproof check valve for flue |
-
2017
- 2017-12-29 CN CN201711478540.0A patent/CN109990120B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201443628U (en) * | 2009-07-23 | 2010-04-28 | 韩文强 | Flue fire-resisting-resisting check valve |
| CN202284667U (en) * | 2011-11-01 | 2012-06-27 | 韩文强 | Check fire resisting damper for flue |
| CN203248797U (en) * | 2013-05-25 | 2013-10-23 | 韩文强 | Flue non-return fire damper |
| CN203453554U (en) * | 2013-08-29 | 2014-02-26 | 周建达 | Fireproof check valve of exhaust pipe opening of range hood |
| CN203797087U (en) * | 2014-04-22 | 2014-08-27 | 黄河科技学院 | Rotating shaft mounting structure ofhand-operated check valve forpublic flue duct |
| CN207648210U (en) * | 2017-12-29 | 2018-07-24 | 宁波方太厨具有限公司 | A kind of double valve sheet fireproof check valve for flue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109990120A (en) | 2019-07-09 |
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