CN201973302U - Fire-proof check valve - Google Patents
Fire-proof check valve Download PDFInfo
- Publication number
- CN201973302U CN201973302U CN2011200454699U CN201120045469U CN201973302U CN 201973302 U CN201973302 U CN 201973302U CN 2011200454699 U CN2011200454699 U CN 2011200454699U CN 201120045469 U CN201120045469 U CN 201120045469U CN 201973302 U CN201973302 U CN 201973302U
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- China
- Prior art keywords
- valve
- check
- valve block
- check rod
- fire
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- Expired - Fee Related
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Abstract
The utility model provides a fire-proof check valve. The fire-proof check valve comprise a valve plate, a fixing shaft, a check device and a valve base, wherein the valve plate is a round valve plate, is connected with the fixing shaft and can rotate along the fixing shaft at an angle of less than or equal to 90 degrees; the check device comprises a torsional spring, a check rod and a fusing sheet; the torsional spring is vertically fixed on the inner side wall of the valve base; the fixed end of the check rod is pinned in the torsional spring; a torsional arm extends out from one end of the torsional spring, clings to the check rod and applies force to the check rod to the centre of the valve plate to make the moveable end of the check rod tend to move to the centre of the valve plate; and the fusing sheet is fixed on the inner side wall of the valve base through a fusing sheet bracket, clings to the moveable end of the check rod and is used for preventing the moveable end of the check rod from moving to the centre of the valve plate. The fire-proof check valve has the advantages that: the structure is simple; used materials are easy to obtain; the valve is suitable for mass production; and the valve can be effectively and timely closed when flame is fled from a public chimney flue, so that the safety of users is guaranteed.
Description
Technical field
The utility model relates to the fire protection equipment technical field, relates in particular to a kind of smoke evacuation anti-fire check valve.
Background technique
Along with the raising that people require the living environment level, how in office or home-use gas exhaust duct, to discharge fume effectively and prevent and the fire of leaping up from reducing atmospheric pollution, improve the quality of living, be a problem demanding prompt solution.Existing anti-fire check valve, generally comprise the oil smoke passage that constitutes by shell, this oil smoke passage has relative intake grill and exhaust outlet, the mouth of pipe of giving vent to anger that connects range hood on the intake grill, exhaust outlet is deep in the public gas flue, the place is provided with able to turn on or off valve block at oil smoke passage exhaust outlet, and valve block is rotatably installed on the inwall of oil smoke passage by horizontally disposed valve block rotating shaft, and the valve block rotating shaft is positioned at position on the upper side, valve block center.When not using kitchen ventilator, valve block covers at the air-out oral area because self gravitation is in the closed position; When using kitchen ventilator, valve block is shown in an open position, valve block is away from exhaust outlet, because plane, valve block place was consistent with vertical public gas flue cross section when valve block was opened, the valve block of opening can hinder the unimpeded of public gas flue, especially under the situation of the public vertical public gas flue of multi-storey residential buildings, the valve block that every layer of resident family opens can seriously hinder the unimpeded of public gas flue, makes the deleterious of cooking-fume discharging.Simultaneously, because the public vertical public gas flue of how tame user, in case unshared housing's breaking out of fire, a large amount of high temperature harmful gases pours in vertical public gas flue, if this moment untimely valve block of closing in the anti-fire check valve, these a large amount of high temperature harmful gases will enter in the man of resident family that uses kitchen ventilator by the oil smoke passage of anti-fire check valve, thereby threaten the security of the lives and property of resident family.
The model utility content
Problem to be solved in the utility model provides a kind of anti-fire check valve, the defective of timely positive closing valve block in the time of can't scurrying into flare to overcome in public gas flue in the prior art.
For achieving the above object, the utility model provides a kind of anti-fire check valve, comprises valve block, stationary axle, backstop and valve seat,
Described valve block is a circular valve block, is connected with described stationary axle, can do to be less than or equal to the rotation of 90 degree along described stationary axle;
Described stationary axle is fixed on the described valve seat, and its axis is the secant that departs from the described valve block center of circle;
Described backstop is fixed on the described valve seat, is positioned at the minor arc side after described valve block is cut apart by described stationary axle, and described backstop comprises torsion spring, check rod and fuse link;
Described torsion spring vertically is fixed in the madial wall of described valve seat, the fixed end pin of described check rod is gone into torsion spring, and described torsion spring one end stretches out one and turns round arm, is adjacent to check rod, described check rod is imposed power to described valve block center, make the movable end of check rod produce trend to described valve block central motion;
Described fuse link is fixed in the madial wall of described valve seat by the fuse link support, and fuse link is adjacent to the movable end of described check rod, is used to stop the movable end of described check rod to the valve block central motion.
Further, described valve seat madial wall is equipped with the retention device of " Contraband " type, " L " type or " one " type, and described retention device is positioned at described check rod below, is used to stop described check rod to the motion of the bottom of described valve seat.
Further, described check rod is curved, and corresponding chord length is less than the diameter of described valve block, and greater than the radius of described valve block.
Further, the end of the movable end of described check rod is to the plane bending of valve block place.
Further, described valve cup rim is provided with Stamping Steel Ribbon.
Further, the melting range of described fuse link is 70 ℃-160 ℃.
Further, the fusing point of described fuse link is 160 ℃.
Further, described stationary axle is made up of two screw rods, and described two screw rods are fixed on the described valve seat by the stationary axle support respectively, and described two screw rods are connected with the edge of described valve block respectively.
Compared with prior art, the technical solution of the utility model has the following advantages:
When 1, scurrying into flare in public gas flue, fuse link heats up rapidly, fuses after reaching its fusing point, and check rod to the valve block central motion, is closed valve block under the effect of torsion spring, guarantee user security effectively.
2, simple structure is easy to produce in batches.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment anti-fire check valve;
Fig. 2 is the local enlarged diagram of the utility model embodiment anti-fire check valve;
View when Fig. 3 closes valve block for the utility model embodiment anti-fire check valve;
Fig. 4 is that the utility model embodiment anti-fire check valve is along fixing axial schematic cross-section;
Fig. 5 is the valve block shape schematic representation of the utility model embodiment anti-fire check valve;
Fig. 6 and Fig. 7 are two kinds of bend mode of the check rod movable end of the utility model embodiment anti-fire check valve.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
The structural representation of embodiment's anti-fire check valve of the present utility model as shown in Figure 1, comprise valve block 4, stationary axle 8, backstop and valve seat 7, as shown in Figure 5, valve block 4 is a circular valve block, be connected with described stationary axle 8, can do to be less than or equal to the rotation of 90 degree along described stationary axle 8; Stationary axle 8 is fixed on the valve seat 7, and its axis is the secant that departs from valve block 4 centers of circle; Backstop is fixed on the valve seat 7, is positioned at the valve block 4 minor arc side of axle 8 after cutting apart that be fixed; As Fig. 1, shown in Figure 4, backstop comprises torsion spring 1, check rod 2 and fuse link 3; Torsion spring 1 vertically is fixed in the madial wall of valve seat 7, and fixed end 21 pins of check rod 2 are gone into torsion spring 1; Shown in Figure 2 as Fig. 1 and partial enlarged drawing thereof, torsion spring 1 one ends stretch out one and turn round arm 11, are adjacent to check rod 2, and check rod 2 is imposed power to described valve block 4 centers, the trend that the movable end 22 of check rod 2 is produced to valve block 4 central motions; Fuse link 3 is fixed in the madial wall of valve seat 7 by the fuse link support, and fuse link 3 is adjacent to the movable end 22 of check rod 2, is used to stop the movable end 22 of check rod 2 to valve block 4 central motions;
The end of the movable end 22 of check rod 2 is used for increasing the frictional force between check rod 2 and the valve block 4 to valve block 4 place plane bendings, and then increases the pressure to valve block, makes it be difficult for opening voluntarily.The movable end 22 of check rod 2 can also but be not limited to adopt shape among Fig. 4, Fig. 6 or Fig. 7, as long as reach the effect that compresses valve block 4.
In order to obtain better air-tightness, be provided with Stamping Steel Ribbon 6 at valve seat 7 edges.
The utility model embodiment's working procedure is as follows:
The user is when using fume extractor, and valve block 4 is opened because of the thrust that flow of flue gas produces, and valve block 4 openable maximum angles are 90 degree, promptly, valve block 4 is vertical with valve seat 7 horizontal planes, because valve block 4 thickness own are very little, so the influence of the velocity of liquid assets to by flue gas the time can be ignored; Under normal circumstances, as shown in Figure 1, the turning round arm 11, check rod 2, fuse link 3 and retention device 5 and all can not influence the unlatching of valve block 4 or close of the torsion spring 1 in the backstop
When having flare to scurry in the public flue, the present embodiment anti-fire check valve of making by metallic material can be rapidly with heat transfer to fuse link 3, fuse link 3 is to be made by the lower metallic material of fusing point, the melting temperature scope is 70 ℃-160 ℃, the employing fusing point is 160 ℃ a fuse link in the present embodiment, when scurrying fiery phenomenon, fuse link 3 can melt because of reaching fusing point, thus the trend that can not continue to stop the movable end 22 of check rod 2 entad to move again.Like this, the movable end 22 of check rod 2 to the central motion of valve block 4, until the state that reaches as shown in Figure 3, is finished closing of valve block 4 under the effect of turning round arm 11 of torsion spring 1.As shown in Figure 4, movable end 22 has warp architecture, can compress valve block 4, and it is closed rapidly from opening state, prevents that effectively the flare in the public flue from scurrying into to family's flue of user.
The utility model is simple in structure, and material therefor obtains easily, is suitable for producing in batches; Can when public flue is scurried into flare, in time close effectively, thereby guaranteed user's safety.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. an anti-fire check valve is characterized in that, described anti-fire check valve comprises valve block, stationary axle, backstop and valve seat,
Described valve block is a circular valve block, is connected with described stationary axle, can do to be less than or equal to the rotation of 90 degree along described stationary axle;
Described stationary axle is fixed on the described valve seat, and its axis is the secant that departs from the described valve block center of circle;
Described backstop is fixed on the described valve seat, is positioned at the minor arc side after described valve block is cut apart by described stationary axle, and described backstop comprises torsion spring, check rod and fuse link;
Described torsion spring vertically is fixed in the madial wall of described valve seat, the fixed end pin of described check rod is gone into torsion spring, and described torsion spring one end stretches out one and turns round arm, is adjacent to check rod, described check rod is imposed power to described valve block center, make the movable end of check rod produce trend to described valve block central motion;
Described fuse link is fixed in the madial wall of described valve seat by the fuse link support, and fuse link is adjacent to the movable end of described check rod, is used to stop the movable end of described check rod to the valve block central motion.
2. anti-fire check valve as claimed in claim 1, it is characterized in that, described valve seat madial wall is equipped with the retention device of " Contraband " type, " L " type or " one " type, and described retention device is positioned at described check rod below, is used to stop described check rod to the motion of the bottom of described valve seat.
3. anti-fire check valve as claimed in claim 1 is characterized in that described check rod is curved, and corresponding chord length is less than the diameter of described valve block, and greater than the radius of described valve block.
4. anti-fire check valve as claimed in claim 1 is characterized in that the end of the movable end of described check rod is to the plane bending of valve block place.
5. as each described anti-fire check valve of claim 1 to 4, it is characterized in that described valve cup rim is provided with Stamping Steel Ribbon.
6. as each described anti-fire check valve of claim 1 to 4, it is characterized in that the melting range of described fuse link is 70 ℃-160 ℃.
7. anti-fire check valve as claimed in claim 6 is characterized in that, the fusing point of described fuse link is 160 ℃.
8. as each described anti-fire check valve of claim 1 to 4, it is characterized in that, described stationary axle is made up of two screw rods, and described two screw rods are fixed on the described valve seat by the stationary axle support respectively, and described two screw rods are connected with the edge of described valve block respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200454699U CN201973302U (en) | 2010-11-09 | 2011-02-15 | Fire-proof check valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020612489 | 2010-11-09 | ||
| CN201020612489.5 | 2010-11-09 | ||
| CN2011200454699U CN201973302U (en) | 2010-11-09 | 2011-02-15 | Fire-proof check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973302U true CN201973302U (en) | 2011-09-14 |
Family
ID=44578405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200454699U Expired - Fee Related CN201973302U (en) | 2010-11-09 | 2011-02-15 | Fire-proof check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973302U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489794A (en) * | 2017-09-26 | 2017-12-19 | 姚世杰 | A kind of oil-smoke-exhausting fireproof check valve |
| CN107795715A (en) * | 2017-12-13 | 2018-03-13 | 丁美娟 | A kind of double stopper arms check-valves |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
-
2011
- 2011-02-15 CN CN2011200454699U patent/CN201973302U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489794A (en) * | 2017-09-26 | 2017-12-19 | 姚世杰 | A kind of oil-smoke-exhausting fireproof check valve |
| CN107489794B (en) * | 2017-09-26 | 2024-04-12 | 姚世杰 | Fire-proof check valve for discharging fume |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
| CN109681680B (en) * | 2017-10-18 | 2024-01-16 | 宁波方太厨具有限公司 | Fireproof check valve for flue of single-chip valve |
| CN107795715A (en) * | 2017-12-13 | 2018-03-13 | 丁美娟 | A kind of double stopper arms check-valves |
| CN107795715B (en) * | 2017-12-13 | 2023-08-25 | 丁美娟 | Check valve with double stop arms |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20140215 |