CN201193729Y - Fire-preventing check valve - Google Patents
Fire-preventing check valve Download PDFInfo
- Publication number
- CN201193729Y CN201193729Y CNU2008200348999U CN200820034899U CN201193729Y CN 201193729 Y CN201193729 Y CN 201193729Y CN U2008200348999 U CNU2008200348999 U CN U2008200348999U CN 200820034899 U CN200820034899 U CN 200820034899U CN 201193729 Y CN201193729 Y CN 201193729Y
- Authority
- CN
- China
- Prior art keywords
- air door
- rotating shaft
- fire
- balancing weight
- check valve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a fireproof check valve which comprises a shell (1); the center of the shell (1) is provided with an inner cavity through hole (2); the shell is provided with an air door (4) through a rotating shaft (3) to close the inner cavity through hole (2) ; the rotating shaft (3) is arranged on the shell (1), specifically on the upper side of the horizontal central line of the air door (4); a fuse link (6) is fixed above the rotating shaft (3) on the back side of the air door (4) by a bolt (5); the other end of the fuse link (6) is connected with a counterweight (7); the counterweight (7) is arranged on the central vertical line of the air door (4); parallelled slide ways (8) are arranged on both sides of the counterweight (7) below the rotating shaft (3); both ends of the horizontal counterweight (7) are arranged in the slide ways (8); the bottom end of each slide way (8) is provided with a baffle. The fireproof check valve has simple structure and low cost, can be reusable, is convenient to be used and has good fireproof effect.
Description
Technical field
The utility model relates to fire-closing valve, particularly is installed in the fire-preventing check valve between flue and the kitchen ventilator exhaust duct.
Background technique
Adopt public exhaust gas flue at present in the residential building mostly, the oil smoke that every household lampblack exhauster or ventilating fan are discharged enters public exhaust gas flue by interior conduit, existing non-return fire-closing valve can both play the effect of non-return frpf, can not reusable defective on the basis of not destroying existing facility after overdoing but all exist, because all as everyone knows fire-closing valves substantially all adopt interior connecting plate to be fixed on valve body on the flue or adopt expansion tube to fix, but most of residents are in fitment process, all on the fixing bolt of valve body or expansion tube, sticked ceramic tile or hanging cupboard has been installed for attractive in appearance, have no idea after overdoing to dismantle, otherwise the hanging cupboard or smash ceramic tile or destroy flue of will dismantling, bring the loss of several times of fire-closing valves or tens times to the resident, what have does not simply repair, at will air door is fixed and got over, stay potential safety hazard for once more initiation fire.
Summary of the invention
The purpose of this utility model is: a kind of fire-preventing check valve is provided, simple in structure, with low cost, reuse, under the prerequisite of not destroying flue and existing facility, easy to maintenance after overdoing, fire-preventing check valve can prevent that oil, cigarette, flavor from refluxing, the cut-out burning things which may cause a fire disaster that can raise speed has good fire-proof function.
The utility model adopts following technological scheme: safety check comprises housing, the neutral position of housing is provided with intracavity through hole, on housing, air door closed inner chamber through hole is installed by rotating shaft, rotating shaft is installed in and is positioned at the air door horizontal center line on the housing on the upper side, above being positioned at rotating shaft on the air door, pass through the bolt fuse link, the other end of fuse link connects balancing weight, balancing weight is positioned on the vertical line of air door center, parallel slideway is established in the both sides that are positioned at balancing weight below rotating shaft, laterally the two ends of balancing weight are provided with in the slideway, and baffle plate is installed in the bottom of slideway.
The fusing point of fuse link is 70 ℃ ± 5 ℃, when breaking out of fire pyrotechnics temperature reaches fusing point, and fuse link fusing, balancing weight slides on the baffle plate under parallel slideway, balancing weight utilizes own wt to close air door and pyrotechnics is cut off, prevent that pyrotechnics from spreading by air door, eliminated disaster hidden-trouble.
Rotating shaft of the present utility model at the air door horizontal center line on the upper side, balancing weight is positioned on the center vertical line of air door, neither the unlatching of the air door under the influence dynamically can make static lower wind door be closed to the optimum state again; Fire-preventing check valve is grease proofing, cigarette, gas flow backwards and fire prevention, and under the situation of not destroying flue and existing facility, the fuse link fixed weight piece that more renews makes fire-closing valve return to armed state again overdoing after, and it is simple in structure, and repeated use is with low cost.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1. housing, 2. intracavity through hole, 3. rotating shaft, 4. air door, 5. bolt, 6. fuse link, 7. weight slide block, 8. parallel slideway, 9. baffle plate.
Embodiment
As shown in Figure 1, safety check comprises housing 1, the neutral position of housing 1 is provided with intracavity through hole 2, on housing 1, air door 4 closed inner chamber through holes 2 are installed by rotating shaft 3, rotating shaft 3 be installed in be positioned at air door 4 on the housing 1 horizontal center line on the upper side, above being positioned at rotating shaft 3 on the air door 4, pass through fixedly fuse link 6 of bolt 5, connect balancing weight 7 on the other end of fuse link 6, balancing weight 7 is positioned on the air door 4 center vertical lines, parallel slideway 8 is established in the both sides that are positioned at balancing weight 7 below rotating shaft 3, laterally the two ends of balancing weight 7 are provided with in the slideway 8, and baffle plate is installed in the bottom of slideway 8.
The fusing point of fuse link 6 is 70 ℃ ± 5 ℃, when breaking out of fire pyrotechnics temperature reaches fusing point, and fuse link 6 fusing, balancing weight 7 slides into for 8 times on the baffle plate 9 along parallel slideway, balancing weight utilizes own wt to close air door 4 and pyrotechnics is cut off, prevent that pyrotechnics from spreading by air door, eliminated disaster hidden-trouble.
Claims (1)
1. fire-preventing check valve, it is characterized in that: safety check comprises housing (1), the neutral position of housing (1) is provided with intracavity through hole (2), go up by rotating shaft (3) installation air door (4) closed inner chamber through hole (2) at housing (1), rotating shaft (3) be installed in be positioned at air door (4) on the housing (1) horizontal center line on the upper side, on air door (4), be positioned at rotating shaft (3) top and pass through fixedly fuse link (6) of bolt (5), the other end of fuse link (6) connects balancing weight (7), balancing weight (7) is positioned on the vertical line of air door (4) center, parallel slideway (8) is established in the both sides that are positioned at balancing weight (7) in the below of rotating shaft (3), laterally the two ends of balancing weight (7) are provided with in the slideway (8), and baffle plate is installed in the bottom of slideway (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200348999U CN201193729Y (en) | 2008-04-28 | 2008-04-28 | Fire-preventing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200348999U CN201193729Y (en) | 2008-04-28 | 2008-04-28 | Fire-preventing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193729Y true CN201193729Y (en) | 2009-02-11 |
Family
ID=40393264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200348999U Expired - Fee Related CN201193729Y (en) | 2008-04-28 | 2008-04-28 | Fire-preventing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193729Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364732A (en) * | 2020-04-10 | 2020-07-03 | 于守章 | Fireproof flue |
-
2008
- 2008-04-28 CN CNU2008200348999U patent/CN201193729Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364732A (en) * | 2020-04-10 | 2020-07-03 | 于守章 | Fireproof flue |
| CN111364732B (en) * | 2020-04-10 | 2021-12-31 | 于守章 | Fireproof flue |
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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: 20090211 Termination date: 20110428 |