CN207539389U - A kind of sealed check-valves for exhaust duct - Google Patents
A kind of sealed check-valves for exhaust duct Download PDFInfo
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- CN207539389U CN207539389U CN201721473032.9U CN201721473032U CN207539389U CN 207539389 U CN207539389 U CN 207539389U CN 201721473032 U CN201721473032 U CN 201721473032U CN 207539389 U CN207539389 U CN 207539389U
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- valves
- check
- cover board
- spacing collar
- valve body
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Abstract
The utility model provides a kind of sealed check-valves for exhaust duct, including：Valve body which is provided with spacing collar, cover board；On valve body air inlet and exhaust outlet are respectively equipped with relative to cover board both sides；Spacing collar is set to the middle part of valve body, is obliquely installed from top to bottom, and the top of spacing collar is equipped with shaft；Cover board is equipped with sealing ring, is arranged on spacing collar by shaft；Guiding device, including for connect valve body connecting plate, for gas to be guided to change into the deflector flowed straight up from bottom horizontal flow sheet, deflector corresponds to exhaust outlet and is arranged on connecting plate.In the utility model, by setting deflector, change the flow direction of gas, push the opening of cover board, reduce windage, be conducive to the outflow of gas；Shaft is located on spacing collar, is contacted between cover board and spacing collar for face, good seal performance.
Description
Technical field
The utility model is related to a kind of sealed check-valves for exhaust duct.
Background technology
At present, the exhaust of residential housing is generally using vertical exhaust pipe system, by the cooking fume in each floor kitchen
The foul smell of body or toilet uniformly collects, and leads to roof and realizes high-altitude dilution discharge.
Smoke blowing taint of odour phenomenon occurs between floor resident family up and down in order to prevent, it usually needs in the flue gas emission branch of each floor
Check-valves is installed (at the air inlet of vertical exhaust passage system) on pipe.Check-valves is generally in normally off, works as mist extractor
When machine or exhaust fan are run, the valve of check-valves is opened under Wind power propelling, and flue gas is sent into exhaust duct and is discharged, and works as mist extractor
Machine either exhaust fan shut down when valve be automatically closed under spring force or gravity, so as to prevent the oil smoke in exhaust duct
Gas or foul smell enter within doors, pollute air within doors.
Chinese patent 201010259548.X discloses a kind of kitchen ventilator check-valves, mainly by valve seat and valve group
Into valve seat top sets hinge seat, and hinge axis and check device are set above valve, and hinge axis is packed into valve seat above valve
After form hinge, valve and valve seat have annular sealing surface, it is characterized in that, valve is tapered to be outwardly protruded.
Chinese patent 201621172910.9 discloses a kind of kitchen anti-crossing smell check-valves, including center pillar, inside center pillar
The oblique and oval baffle ring of setting is integrated, is axis in the middle part of baffle ring, is fixed with fixinig plate in axis, is opened on fixinig plate
Equipped with slot, slot is fixed with the card column buckle on silica gel piece, and silica gel piece one end is pressed together on using elasticity on baffle ring, and silica gel piece is set
Connected two-piece type is calculated as, and its material is silica gel；The present apparatus further includes pedestal and upper circle, and pedestal is connected under center pillar, upper circle
It assigns on center pillar, the middle of the base is provided with for fixed horizontal stripe.
The defects of above-mentioned technical proposal, is：
1st, poor sealing performance, smoke blowing taint of odour phenomenon are apparent；
2nd, the windage of non-return valve body is big, and smoke evacuation is not smooth, it is impossible to flue gas is expelled in exhaust duct in time, is influenced
The use at family.
Therefore, how a kind of good seal performance, the small check-valves of windage, into problem to be solved in the industry are provided.
Utility model content
In view of the drawbacks of the prior art, the utility model provides a kind of sealed check-valves for exhaust duct, knot
Structure is simple, and windage is small, good seal performance, the phenomenon that will not generating smoke blowing taint of odour.
To achieve these goals, the utility model provides a kind of sealed check-valves for exhaust duct, before air-flow
Into direction for front, including：
Valve body which is provided with spacing collar, cover board；On valve body air inlet and exhaust outlet are respectively equipped with relative to cover board both sides；
Spacing collar is set to the middle part of valve body, is obliquely installed from top to bottom, and the top of spacing collar is equipped with shaft；
Cover board is equipped with sealing ring, is arranged on spacing collar by shaft.
In the utility model, in normal state, cover plate lid is on spacing collar, under the action of sealing ring, ensure that this
The seal of check-valves, the flue gas in exhaust duct will not be flowed by check-valves inside room, will not generate smoke blowing taint of odour
Phenomenon.During working condition, under the action of the forces of the wind, cover board is turned to horizontal position around shaft, and indoor flue gas is sent out
Into exhaust duct, windage is small, good exhaust effect.After the completion of exhaust, under the action of cover board its own gravity, cover board restores to just
Normal state.
Another kind specific embodiment according to the present utility model, cover board include free end and hinged end, hinged end rotation
Connect shaft；When cover board is flared to horizontality, the length that valve body is stretched out in free end is 30mm-50mm.Preferably, free end
The length for stretching out valve body is identical with exhaust duct wall thickness, the advantages of this arrangement are as follows, material can be not only saved, but also can realize
Gas is flowed into after discharge duct, realizes discharge upwards at once, and discharge effect is good.
Another kind specific embodiment according to the present utility model, check-valves further include guiding device, and guiding device includes
For connect valve body connecting plate, for gas to be guided to change into the deflector flowed straight up, deflector from bottom horizontal flow sheet
Corresponding exhaust outlet is arranged on connecting plate.In the present solution, connecting plate is equipped with taper surface, correspondingly, the connecting pin on valve body
For taper, the two realizes closely cooperation, that is, facilitates installation, guaranteed leakproofness.Deflector is located at the position of exhaust outlet, gas
Body is consistent with the primary air direction in exhaust duct from bottom horizontal flow sheet drainage to flow straight up under the action of deflector, no
Air curtain resistance can be generated, promotes flue gas smooth discharge.
Another kind specific embodiment according to the present utility model, when cover board is flared to horizontality, deflector is close to row
One end of gas port is located at the rear of free end.Deflector the advantages of this arrangement are as follows, in guiding device formed one upwards
The flow-guiding channel of bending, when gas flows into the flow-guiding channel, the gas for flowing through deflector moves obliquely, to the free end of cover board
A upward thrust is formed, cover board is pushed preferably to open.
Another kind specific embodiment according to the present utility model, deflector are curved arc shape.
Another kind specific embodiment according to the present utility model, connecting plate are equipped with the flange for connecting exhaust duct.
Another kind specific embodiment according to the present utility model, the angle between spacing collar and horizontal plane is 45 °-
90°。
Another kind specific embodiment according to the present utility model, spacing collar are equipped with what is be attracted for spacing collar with cover board
Magnetic element, magnetic element correspond to free end setting.Under the action of magnetic force, the sealing ring on cover board is compacted, in cover board and
Firm sealing surface is formd between spacing collar, ensure that the leakproofness of check-valves.
Another kind specific embodiment according to the present utility model, sealing ring are U-shaped sealing ring.When the back pressure that valve is born
Higher, the sealing ring in U-shaped section just becomes more flat, and bigger with the contact area on spacing collar and cover board, sealing effect is just
Better.
Another kind specific embodiment according to the present utility model, the bottom of spacing collar are equipped with oil guiding hole, and valve body is equipped with
Catchment cup, catchment cup correspond to oil guiding hole setting.
Another kind specific embodiment according to the present utility model, the shape of cover board is round, rectangular or other polygon
Shape.
In the utility model, by setting deflector, on the one hand realize gas from bottom horizontal flow sheet drainage as straight up
Flowing, it is consistent with primary air direction in exhaust duct, it prevents from forming air curtain in exhaust duct, reduces the air-flow wind in exhaust duct
Resistance；On the other hand, changing for gas flow direction can form a upward thrust to cover board, and cover board is pushed to open the angle of bigger
Degree accelerates the flowing of gas in check-valves, reduces the windage inside check-valves.
Compared with prior art, the utility model is beneficial in that：
The 1st, deflector is set, change the flow direction of gas, push the opening of cover board, reduce windage, be conducive to the stream of gas
Go out；
2nd, shaft is located on spacing collar, is contacted between cover board and spacing collar for face, good seal performance；
3rd, the gas that the flow-guiding channel that deflector and connecting plate are formed is limited in exhaust duct flows into valve inner, effectively
The phenomenon that having prevented smoke blowing taint of odour.
The utility model is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the schematic diagram of the check-valves installation condition of embodiment 1；
Fig. 2 is the schematic diagram of the cover plate closing state of check-valves in Fig. 1；
Fig. 3 is in Fig. 1, and the cover board of check-valves is flared to the schematic diagram of horizontality；
Fig. 4 is the front view of body portion；
Fig. 5 is the right view of body portion；
Fig. 6 is body portion cover board opening schematic diagram；
Fig. 7 is body portion cover plate closing status diagram；
Fig. 8 is the partial enlarged view at the I of Fig. 7, and which show spindle portions；
Fig. 9 is the partial enlarged view at the II of Fig. 7, and which show magnetic elements；
Figure 10 is the structure diagram of guiding device in check-valves.
Specific embodiment
Embodiment 1
A kind of sealed check-valves for exhaust duct is present embodiments provided, as Figure 1-10 shows, including：Air inlet
Mouthful 1, valve body 2, exhaust outlet 3, cover board 4, spacing collar 5, shaft 6, catchment cup 7, oil guiding hole 8, U-shaped sealing ring 9, magnetic element 10,
Guiding device 11, flange 12, connecting plate 13, deflector 14, flow-guiding channel 15.
Wherein, spacing collar 5 is located at the middle part of valve body 2, is the loop configuration of middle opening, and spacing collar 5 inclines from top to bottom
Tiltedly setting, the angle between horizontal plane is 75 °；Shaft 6 is laterally located at spacing collar 5 close to the position at top；Spacing collar 5
Bottom is equipped with oil guiding hole 8, and valve body 2 is equipped with catchment cup 7, and catchment cup 7 corresponds to oil guiding hole 8 and sets.
The shape of cover board 4 is similar rectangular structure, and the area of cover board 4 is more than the area of 5 middle opening of spacing collar；Cover board
4 are arranged on by shaft 6 on spacing collar 5, and U-shaped sealing ring 9 is equipped on the edge of cover board 4；Cover board 4 is including hinged end 41 and certainly
By end 42, spacing collar 5 is equipped with the magnetic element 10 being attracted for spacing collar 5 with cover board 4, and magnetic element 10 corresponds to free end 42
Setting is equipped on the position of the free end of cover board 4 42 and is used for and the attracted iron block of magnetic element 10.
On valve body 2 air inlet 1 and exhaust outlet 3 are respectively equipped with relative to 4 both sides of cover board；Air inlet 1 connects indoor exhaust
Pipe etc..
Guiding device 11, including connecting plate 13, for gas to be guided to change into what is flowed straight up from bottom horizontal flow sheet
Deflector 14, connecting plate 13 and valve body 2 are respectively equipped with the taper connection face of mutual cooperation, realize the close of connecting plate 13 and valve body 2
Envelope connection, connecting plate 13 are equipped with the flange 12 for being fixedly connected with exhaust duct 16, and deflector 14 is curved arc shape, corresponds to exhaust
Mouth 3 is set on connecting plate 13, and flow-guiding channel 15, one end of flow-guiding channel 15 are formd between connecting plate 13 and deflector 14
Connect with exhaust outlet 3, the other end of flow-guiding channel 15 is located in exhaust duct 16, gas in 15 flow process of flow-guiding channel, from
Bottom horizontal flow sheet is changed into be flowed straight up, eliminates air curtain resistance, accelerates the outflow of gas.
As shown in figure 9, when cover board 4 is flared to horizontality, the length that valve body 2 is stretched out in free end 42 is 40mm, at this point, from
By end 42 and the inner wall flushes of exhaust duct 16, after one end 141 of the close exhaust outlet 3 of deflector 14 is located at free end 42
Side.
In the present embodiment, the direction that air-flow advances is front, i.e., the position of air inlet 1 is rear in figure, and exhaust outlet 3 is located at
The front of air inlet 1.
In the present embodiment, deflector is limited in the gas backstreaming to valve body in exhaust duct, is further improved close
Feng Xing solves the phenomenon that smoke blowing taint of odour.
In the present embodiment, when gas flows through flow-guiding channel, on the one hand realize by gas from bottom horizontal flow sheet drainage for vertically to
Upper flowing, on the other hand, changing for gas flow direction can form a upward thrust to cover board, and cover board is pushed to open bigger
Angle, accelerate check-valves in gas flowing, reduce the windage inside check-valves.
Although the utility model is disclosed above with preferred embodiment, it is not limited to the model of the utility model implementation
It encloses.Any those of ordinary skill in the art in the invention scope for not departing from the utility model, improve when can make a little,
I.e. every equal improvement done according to the utility model, should be the scope of the utility model and is covered.
Claims (10)
1. a kind of sealed check-valves for exhaust duct, the direction that air-flow advances is front, which is characterized in that the check-valves
Including：
Valve body which is provided with spacing collar, cover board；On the valve body air inlet and exhaust are respectively equipped with relative to the cover board both sides
Mouthful；
The spacing collar is set to the middle part of the valve body, is obliquely installed from top to bottom, and the top of the spacing collar, which is equipped with, to be turned
Axis；
The cover board is equipped with sealing ring, is arranged on the spacing collar by the shaft.
2. check-valves as described in claim 1, which is characterized in that the cover board includes free end and hinged end, described hinged
End is rotatablely connected the shaft；When the cover board is flared to horizontality, the length that the valve body is stretched out in the free end is
30mm-50mm。
3. check-valves as claimed in claim 2, which is characterized in that the check-valves further includes guiding device, the water conservancy diversion dress
Put including be used to connecting the valve body connecting plate, for gas to be guided to change into the water conservancy diversion flowed straight up from bottom horizontal flow sheet
Plate, the deflector correspond to the exhaust outlet and are arranged on the connecting plate.
4. check-valves as claimed in claim 3, which is characterized in that when the cover board is flared to horizontality, the deflector
It is located at the rear of the free end close to one end of the exhaust outlet.
5. check-valves as claimed in claim 4, which is characterized in that the deflector is curved arc shape.
6. check-valves as described in claim 1, which is characterized in that the angle between the spacing collar and horizontal plane is 45 °-
90°。
7. check-valves as claimed in claim 2, which is characterized in that the spacing collar be equipped with for the spacing collar with it is described
The magnetic element that cover board is attracted, the magnetic element correspond to the free end setting.
8. check-valves as described in claim 1, which is characterized in that the sealing ring is U-shaped sealing ring.
9. check-valves as described in claim 1, which is characterized in that the bottom of the spacing collar is equipped with oil guiding hole, the valve body
Catchment cup is equipped with, the catchment cup corresponds to the oil guiding hole setting.
10. check-valves as described in claim 1, which is characterized in that the shape of the cover board is round, rectangular or other more
Side shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473032.9U CN207539389U (en) | 2017-11-07 | 2017-11-07 | A kind of sealed check-valves for exhaust duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473032.9U CN207539389U (en) | 2017-11-07 | 2017-11-07 | A kind of sealed check-valves for exhaust duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207539389U true CN207539389U (en) | 2018-06-26 |
Family
ID=62612660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721473032.9U Active CN207539389U (en) | 2017-11-07 | 2017-11-07 | A kind of sealed check-valves for exhaust duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207539389U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332343A (en) * | 2019-07-19 | 2019-10-15 | 广州市法玉环保科技有限公司 | A kind of fire-preventing check valve |
| CN110375094A (en) * | 2019-08-20 | 2019-10-25 | 南华大学 | Flow-guiding type elbow wind check-valves |
| CN111486253A (en) * | 2019-01-29 | 2020-08-04 | 内蒙古环保投资集团有限公司 | Positive and negative pressure safety valve and VOCs purification treatment device applying same |
| CN110101933B (en) * | 2019-06-06 | 2021-04-06 | 徐万鹏 | Portable anorectal surgery clinical flushing equipment |
-
2017
- 2017-11-07 CN CN201721473032.9U patent/CN207539389U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486253A (en) * | 2019-01-29 | 2020-08-04 | 内蒙古环保投资集团有限公司 | Positive and negative pressure safety valve and VOCs purification treatment device applying same |
| CN110101933B (en) * | 2019-06-06 | 2021-04-06 | 徐万鹏 | Portable anorectal surgery clinical flushing equipment |
| CN110332343A (en) * | 2019-07-19 | 2019-10-15 | 广州市法玉环保科技有限公司 | A kind of fire-preventing check valve |
| CN110375094A (en) * | 2019-08-20 | 2019-10-25 | 南华大学 | Flow-guiding type elbow wind check-valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200804 Address after: 510000 self compiled 1 A building A301 room, No. 23, lotus King South Road, Liwan District, Guangzhou, Guangdong. Co-patentee after: Lianzhi (Beijing) Technical Service Co., Ltd Patentee after: GUANGZHOU CAIDIE ENERGY-SAVING TECHNOLOGY Co.,Ltd. Address before: 510000 self compiled 1 A building A301 room, No. 23, lotus King South Road, Liwan District, Guangzhou, Guangdong. Patentee before: GUANGZHOU CAIDIE ENERGY-SAVING TECHNOLOGY Co.,Ltd. |