CN108797726A - A kind of non-maintaining check valve of valve and building-drainage system - Google Patents
A kind of non-maintaining check valve of valve and building-drainage system Download PDFInfo
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- CN108797726A CN108797726A CN201810640132.9A CN201810640132A CN108797726A CN 108797726 A CN108797726 A CN 108797726A CN 201810640132 A CN201810640132 A CN 201810640132A CN 108797726 A CN108797726 A CN 108797726A
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- valve
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- port
- inlet pipe
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
- E03C1/298—Odour seals consisting only of non-return valve
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of non-maintaining check valve of valve and building-drainage systems, it is related to construction drainage technical field, the present invention includes the valve body protecgulum and valve shell to link together, valve body protecgulum includes valve water inlet pipe, one end of valve water inlet pipe is stretched into inside valve shell, the port that valve water inlet pipe stretches into valve shell is arranged to scarf port, the valve piece for blocking scarf port is provided in valve shell, valve piece one end is fixed at the top of valve water inlet pipe, the present invention, which has, can guarantee and will not cause line clogging while deodorant function again, it can avoid safeguarding, the advantages of having a wide range of application.
Description
Technical field
The present invention relates to construction drainage technical fields, more particularly to a kind of non-maintaining check valve of valve and house
Drainage system.
Background technology
The discharge of house toilet and kitchen waste water is the problem of household resident building or office building etc. cannot be avoided, to house
The basic demand of drainage system is：(1) it drains unimpeded；(2) it can prevent the stink of sewer from inversely invading interior along pipeline；
(3) pipeline silting phenomenon does not occur during being used for a long time.The common method is required to be as shown in fig. 7, solving first two at present
It connects in drainage system a U-tube component 1, the ponding in the U-tube component 1 neither interferes passing through for flow, and can seal
Blocked pipeline prevents the foul smell in sewer from inversely invading interior along pipeline, but the requirement for Section 3 silting blocking is current
Then without better active solution, passively one can only be opened in the bottom of U-tube component 1 and check dredge outlet 2 in case being
The dredge outlet 2 is opened when system generation silting manually to be dredged, on the surface, the program seems very perfect, and system structure was both
Simply and long lifespan, also contemplate simple maintenance solution, can reality or barely satisfactory, building-drainage system blocks
Still frequent occurrence, cause the strong complaint of resident family.
Drinage of house is drained with clearance-type, water is few, hydraulic pressure is small, flow velocity is slow, scouring capability is weak, contains various silts in water
The characteristics of impurity, the building-drainage system designed using U-tube component 1 are had the disadvantages that：
(1) dredge outlet 2 reserved in U-tube component 1 is must be provided with because structure limits in the family of resident family downstairs, therefore should
Dredge outlet 2 is often shut because of others' house decoration furred ceiling and is not worked, and the used time is wanted to dismantle the family of others' family again really
Furred ceiling is filled, the health of others' family is influenced, brings great inconvenience, maintenance cost high to others' life；
(2) water after using the building-drainage system that U-tube component 1 designs to drain every time is all in 1 bottom of U-tube component
Longer-term persistence, this results in the sundries such as the silt in water that must precipitate herein, with the extension of usage time, 1 bottom of U-tube component
Portion can deposit more and more silt sundries, finally cause line clogging at last；
(3) the building-drainage system embedded pipeline part for using U-tube component 1 to design is more, the draining of existing drainage system
Pipe, also blowdown manifold, built-in fitting cause house to build constructional difficulties more, and toilet Slab Waterproof Construction is difficult, and toilet oozes
Danger leak out greatly；
(4) use the building-drainage system drainpipe turning that U-tube component 1 designs too many, to turn altogether 3 90 ° it is curved and one
A 180 ° curved, and such structure is that dredging tool etc. is caused to be difficult one of the reason of effectively the dredging work that be well on；
(5) the building-drainage system duct length for using U-tube component 1 to design is too long, to put in others' family downstairs always
In, it is more along with turning, it is to cause draining one of the reason that flow velocity is slow, scouring force is low, to increase the possibility of silting；
(6) operation principle that deodorization is carried out using 1 ponding of U-tube component is difficult to adapt to the antifreeze needs of winter low temperature, pole
The freeze injury and the system property freezed for easily causing building-drainage system block.
Therefore above-mentioned technical problem how is solved, there is very much realistic meaning to those skilled in the art.
Invention content
It is an object of the invention to：It is drained, is easy to solve existing building-drainage system using u-tube structure
The technical problem for causing line clogging, dredging inconvenient, a kind of non-maintaining check valve of valve of present invention offer and Drinage of house system
System.
The present invention specifically uses following technical scheme to achieve the goals above：
A kind of non-maintaining check valve of valve, including the valve body protecgulum and valve shell that link together, valve body protecgulum packet
Valve water inlet pipe is included, one end of valve water inlet pipe is stretched into inside valve shell, and the port that valve water inlet pipe stretches into valve shell is arranged to
Scarf port, the valve piece for blocking scarf port is provided in valve shell, and valve piece one end is fixed on valve water inlet
Tube top portion.
Further, valve water inlet pipe one end is provided with into water end interface, and valve water inlet pipe outer wall is provided with a circle for blocking
The capping of valve shell port, water inlet end interface, valve water inlet pipe and capping are integrated.
Further, valve shell includes being sequentially connected integral front housing section, shell stage casing and shell back segment, shell
Leading portion is connected with capping, and the captured area in shell stage casing is gradually reduced along water (flow) direction, and shell back segment end is connected with water outlet
End interface.
Further, the outer wall of valve shell is provided with flow direction indicia arrow.
Further, the gradient of scarf port is θ, -140 ° of θ=120 °.
Further, one end of valve piece is bonded in the top of valve water inlet pipe, the top of valve water inlet pipe by waterproof adhesive agent
Portion is provided with the pressing plate for compressing valve piece, and pressing plate is fixed by plating brass screw.
Further, the width of valve piece exceeds the 5mm-10mm of scarf port both sides of the edge, and the length of valve piece is super
Go out the 10mm-15mm at scarf port bottom edge.
Further, the material of valve piece is anti-aging, corrosion-resistant, acid and alkali-resistance macromolecule organic material.
A kind of building-drainage system using the non-maintaining check valve of valve, including be set to below room floors and successively
The floor drain of connection, drainpipe connect the non-maintaining check valve of mouth, manifold trunk, valve and diversion pipe, diversion pipe are communicated with more
Blowdown manifold.
Further, the non-maintaining check valve of manifold trunk, valve and diversion pipe integrally tilt down 5 ° -10 °.
Operation principle：The sewage generated in room passes through floor drain and drainpipe successively, then by connecting mouth interflow more
After flow to manifold trunk, when fluid flows to the non-maintaining check valve of valve by manifold trunk, first by valve body protecgulum, and in fluid
Closure is set to be opened in the valve piece of scarf port under percussion, fluid enters inside valve shell, then passes through diversion pipe stream
Enter blowdown manifold and concentrate discharge, when do not have fluid by when, valve piece is automatic sagging under Gravitative Loads and blocks scarf
Play the role of deodorization to the peculiar smell that isolation is transmitted from blowdown manifold in port.
Beneficial effects of the present invention are as follows：
1, when fluid check valve non-maintaining by valve, first by valve body protecgulum, and under fluid impact effect
So that closure is opened in the valve piece of scarf port, fluid enters inside valve shell and discharges, when do not have fluid by when,
Valve piece is automatic sagging under Gravitative Loads and blocks scarf port, to play the role of deodorization, exempts to tie up using valve
Check valve is protected to replace the U-tube component used in existing building-drainage system, the length of drainage system drainpipe can be greatly reduced
Degree and channel bend quantity eliminate the possibility that the siltation of silt sundries blocks in pipeline to keep drainage system draining more unobstructed
Property, will not result in blockage phenomenon again while ensureing deodorant function.The non-maintaining check valve of valve is by human heart valve work
The inspiration for making principle is automatically closed using the gravity of valve piece, patency is good, without ponding, without precipitation, without abrasion, non-corroding, nothing
Clamping stagnation, without winding, the long-life, truly realize non-maintaining function, maintenance cost saved, no longer to others' life
It causes to perplex, eliminates house user and potential worry and worry are used to house, it is non-maintaining unidirectional by using valve
Valve eliminates other built-in pipes in addition to blowdown manifold, the reduction of built-in pipe quantity in room floor concrete and is conducive to house
Build construction, greatly reduce difficulty of construction, also substantially increase the ability of house antiseep.Valve of the present invention is non-maintaining
One-way valve structures are simple, manufacturing cost is low, can directly replace the U-tube component in existing building-drainage system, easy for installation, tool
There are prodigious market prospects.
2, valve body protecgulum and valve shell are integrated, can be by integrated injection molding, and difficulty of processing is low, valve body
Protecgulum and valve shell re-form an entirety by bonding, and structure is firm, and the captured area in shell stage casing is gradually reduced, and can subtract
Few draining turbulent flow, the outer wall of valve shell are provided with flow direction indicia arrow, convenient for reminding construction worker correctly to install, ensure
Installation quality.
3, it is θ that the gradient of scarf port, which is gradient, -140 ° of θ=120 °, this gradient range can make valve piece from recast
Scarf port smoothly is blocked with lower, plugging effect is good, and gradient is too small, between existing between valve piece and scarf port
Gap cannot block completely, and gradient is excessive, when impact force inadequate valve larger with valve piece contact area when fluid impact valve piece
Diaphragm opens not exclusively, and for fluid by just having some setbacks, this gradient range ensure that plugging effect, in turn ensure that draining is unobstructed,
Design size is scientific and reasonable for structure.
4, the material of valve piece is anti-aging, corrosion-resistant, acid and alkali-resistance macromolecule organic material, valve piece is soft, it is proper,
Switch freely, service life it is long, the width of valve piece exceeds the 5mm-10mm of scarf port both sides of the edge, the length of valve piece
10mm-15mm beyond scarf port bottom edge, to ensure tight closure needs of the valve piece to scarf port, valve
One end of piece is bonded in the top of valve water inlet pipe by waterproof adhesive agent, is provided at the top of valve water inlet pipe for compressing valve piece
Pressing plate, pressing plate fixed by plating brass screw, and structural stability is good, and will not damage valve piece, and plating brass screw is again with antirust
Erosion acts on.
5, the mouths that connect in drainage system can connect a plurality of drainpipe more, thus after multiple source of sewage concentration is collected again
It is handled, reduces pipeline installation, manifold trunk, the non-maintaining check valve of valve and diversion pipe in drainage system integrally dip down
Oblique 5 ° -10 °, it can play the role of the scouring capability for increasing draining flow velocity, improving draining to drainage system, make system not ponding,
Without ponding in drainage system, naturally also just had occurred without freeze injury phenomenon.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the non-maintaining check valve of valve of the present invention；
Fig. 2 be a kind of non-maintaining check valve of valve of the present invention without fluid by when structural schematic diagram；
Fig. 3 is a kind of structural schematic diagram of the non-maintaining check valve another kind embodiment of valve of the present invention；
Fig. 4 is a kind of outer surface structure schematic diagram of the non-maintaining check valve of valve of the present invention；
Fig. 5 is structural schematic diagram when a kind of non-maintaining check valve of valve is applied in building-drainage system；
Fig. 6 is structural schematic diagram when old building-drainage system replaces U-tube component using the non-maintaining check valve of valve；
Fig. 7 is structural schematic diagram when conventional house drainage system uses U-tube component.
Reference numeral：1-U type pipe components, 2- dredge outlets, 3- valve body protecgulums, 3.1- valve water inlet pipes, 3.2- water inlet end interfaces,
3.3- is covered, 4- valve shells, 4.1- front housing sections, 4.2- shells stage casing, 4.3- shell back segments, 5- valve pieces, the water outlets 6-
Interface, 7- pressing plates, 8- flow direction indicia arrows, 9- room floors, 10- floor drains, 11- drainpipes, 12- connect mouth more,
13- manifold trunks, 14- diversion pipes, 15- blowdowns manifold.
Specific implementation mode
In order to which those skilled in the art are better understood from the present invention, below in conjunction with the accompanying drawings with following embodiment to the present invention
It is described in further detail.
Embodiment 1
As shown in fig. 1 to 4, the present embodiment provides a kind of non-maintaining check valves of valve, including the valve body to link together
Protecgulum 3 and valve shell 4, valve body protecgulum 3 include valve water inlet pipe 3.1, and one end of valve water inlet pipe 3.1 is stretched into inside valve shell 4,
The port that valve water inlet pipe 3.1 stretches into valve shell 4 is arranged to scarf port, is provided in valve shell 4 for blocking tiltedly
The valve piece 5 of section port, 5 one end of valve piece are fixed on 3.1 top of valve water inlet pipe.
In the present embodiment, when fluid check valve non-maintaining by valve, first by valve body protecgulum, and rushed in fluid
Closure is set to be opened in the valve piece of scarf port under the effect of hitting, fluid enters inside valve shell and discharges, when not flowing
Body by when, valve piece is automatic sagging under Gravitative Loads and blocks scarf port, to play the role of deodorization, utilizes valve
The non-maintaining check valve of membrane type replaces the U-tube component used in existing building-drainage system, can greatly reduce drainage system row
It is stifled to eliminate silt sundries siltation in pipeline to keep drainage system draining more unobstructed for the length and channel bend quantity of water pipe
The possibility of plug, will not result in blockage phenomenon again while ensureing deodorant function.The non-maintaining check valve of valve is by the human body heart
The inspiration of dirty valve operation principle, is automatically closed using the gravity of valve piece, patency is good, without ponding, without precipitation, without abrasion,
Non-corroding, without clamping stagnation, without winding, the long-life, truly realize non-maintaining function, save maintenance cost, it is no longer right
Others' life causes to perplex, and eliminates house user to house using potential worry and worry, by using valve
Non-maintaining check valve, eliminates other built-in pipes in addition to blowdown manifold in room floor concrete, the reduction of built-in pipe quantity,
Be conducive to house builds construction, greatly reduces difficulty of construction, also substantially increases the ability of house antiseep.
Embodiment 2
As shown in fig. 1 to 4, the present embodiment is further optimized on the basis of embodiment 1, specifically, valve water inlet
3.1 one end of pipe is provided with into water end interface 3.2, and 3.1 outer wall of valve water inlet pipe is provided with a circle for blocking 4 port of valve shell
Capping 3.3, water inlet end interface 3.2, valve water inlet pipe 3.1 and capping 3.3 are integrated, and valve shell 4 includes being sequentially connected
Integral front housing section 4.1, shell stage casing 4.2 and shell back segment 4.3, front housing section 4.1 is connect with capping 3.3, in shell
The captured area of section 4.2 is gradually reduced along water (flow) direction, and 4.3 end of shell back segment is connected with water outlet end interface 6, valve shell
4 outer wall is provided with flow direction indicia arrow 8.
In the present embodiment, valve body protecgulum and valve shell are integrated, and can pass through integrated injection molding, difficult processing
Spend low, valve body protecgulum and valve shell re-form an entirety by bonding, and structure is firm, and the captured area in shell stage casing is gradual
Reduce, draining turbulent flow can be reduced, the outer wall of valve shell is provided with flow direction indicia arrow, convenient for reminding construction worker correct
Installation ensures installation quality.
Valve water inlet tube section in the present embodiment can be used rectangular, and advantage is at the top of rectangular valve water inlet pipe to be plane,
Convenient for being mounted directly valve piece, if considering manufacturability issues, common round tube can also be used in valve water inlet pipe, but must be in circle
Valve water inlet pipe at the top of a horizontal mounting platform is set, for installing valve piece.
Embodiment 3
As shown in Figure 1, the present embodiment is further optimized on the basis of embodiment 1, and specifically, scarf port
Gradient be θ, -140 ° of θ=120 °.
In the present embodiment, ranging from 120 ° -140 ° of the gradient of scarf port can make valve piece smooth under Gravitative Loads
Scarf port is blocked, plugging effect is good, and gradient is too small, there can be gap between valve piece and scarf port, cannot be complete
Complete to block, gradient is excessive, and when fluid impact valve piece is larger with valve piece contact area, and valve piece opening is not when impact force is inadequate
Completely, for fluid by just having some setbacks, this gradient range ensure that plugging effect, in turn ensures and drains unobstructed, design size knot
Structure is scientific and reasonable.
Embodiment 4
As shown in Fig. 1 to 3, one end of valve piece 5 is bonded in the top of valve water inlet pipe 3.1 by waterproof adhesive agent, valve into
The top of water pipe 3.1 is provided with the pressing plate 7 for compressing valve piece 5, and pressing plate 7 is fixed by plating brass screw, the width of valve piece 5
5mm-10mm beyond scarf port both sides of the edge, the length of valve piece 5 exceed the 10mm- at scarf port bottom edge
The material of 15mm, valve piece 5 are anti-aging, corrosion-resistant, acid and alkali-resistance macromolecule organic material.
In the present embodiment, the material of valve piece is anti-aging, corrosion-resistant, acid and alkali-resistance macromolecule organic material, such as rubber
Film, plastic film, nylon silk fabrics, dacron silk fabrics, animal hair fabric, valve piece can also be used other with the phase same sex
Can organic fabrix etc. make, valve piece is soft, proper, switch freely, service life it is long, the width of valve piece is beyond tiltedly
The 5mm-10mm of section port both sides of the edge, the length of valve piece exceed the 10mm-15mm at scarf port bottom edge, to protect
Valve piece to be demonstrate,proved to need the tight closure of scarf port, one end of valve piece is fixed on the top of valve water inlet pipe by pressing plate,
Structural stability is good, and will not damage valve piece, while the plating brass screw of fixation clip has anti-corrosion effect again, integrally carries
High service life.
The lower edge of valve piece will not generally touch the inner wall of the valve shell of lower section, as shown in Fig. 2, this structure is general
It is irreversibly delivering for liquid or gas in medium fluid, can also extend the lower edge of valve piece make part of it touch lower section
The inner wall of valve shell, as shown in figure 3, this structure is suitable for medium fluid for liquid and containing the unidirectional defeated of the impurity such as silt
Send, valve piece can be swung up and down under flow action when sewage effluent, when valve piece is swung due to valve piece lower edge is longer can not
The disconnected inner wall for patting valve shell, prevents various silt impurity siltations in the inner wall of valve shell, and anti-clogging effect is more preferable.
Meanwhile as long as the medium character that the non-maintaining check valve of valve is contacted, changing the material of valve piece and valve body
Matter, the non-maintaining check valve of the valve can be widely applied to other industry fields to liquid or gas class medium in condition of similarity
Under irreversibly deliver, applicability is very wide.
Embodiment 5
As shown in figure 5, the present embodiment provides a kind of building-drainage systems using the non-maintaining check valve of valve, specifically
It is, including is set to the lower section of room floors 9 and sequentially connected floor drain 10, drainpipe 11, connects mouth 12, manifold trunk more
13, the non-maintaining check valve of valve and diversion pipe 14, diversion pipe 14 are communicated with blowdown manifold 15, and manifold trunk 13, valve exempt to tie up
Shield check valve and 14 entirety of diversion pipe tilt down 5 ° -10 °.
In the present embodiment, the mouths that connect in drainage system can connect a plurality of drainpipe more, thus by multiple source of sewage collection
In collect after handled again, reduce pipeline installation, connect mouth more and threeway or four-way interface, collecting in drainage system can be used
Pipe, the non-maintaining check valve of valve and diversion pipe integrally tilt down 5 ° -10 °, to drainage system can play increasing draining flow velocity,
The effect for improving the scouring capability of draining, making system not ponding, without ponding in drainage system, naturally also just without the generation of freeze injury phenomenon
?.
Fig. 5 is the structural schematic diagram of the novel water drain system used when building new house, when building has used U when building
When the drainage system of type pipe component formula, directly U-tube component removal can be got off, then using the non-maintaining check valve of valve as
Refill-unit replaces U-tube component to be mounted in drainage system, as shown in fig. 6, applicability is wide, it is easy to operate.
The above, only presently preferred embodiments of the present invention, are not intended to limit the invention, patent protection model of the invention
It encloses and is subject to claims, equivalent structure variation made by every specification and accompanying drawing content with the present invention, similarly
It should be included within the scope of the present invention.
Claims (10)
1. a kind of non-maintaining check valve of valve, which is characterized in that including the valve body protecgulum (3) to link together and valve shell
(4), valve body protecgulum (3) includes valve water inlet pipe (3.1), and it is internal that valve shell (4) is stretched into one end of valve water inlet pipe (3.1), valve into
The port that water pipe (3.1) stretches into valve shell (4) is arranged to scarf port, be provided with for blocking in valve shell (4)
The valve piece (5) of scarf port, valve piece (5) one end are fixed at the top of valve water inlet pipe (3.1).
2. the non-maintaining check valve of a kind of valve according to claim 1, which is characterized in that valve water inlet pipe (3.1) one end
It is provided with into water end interface (3.2), valve water inlet pipe (3.1) outer wall is provided with envelope of the circle for blocking valve shell (4) port
It covers (3.3), water inlet end interface (3.2), valve water inlet pipe (3.1) and capping (3.3) are integrated.
3. the non-maintaining check valve of a kind of valve according to claim 2, which is characterized in that valve shell (4) include according to
The secondary front housing section (4.1) to link into an integrated entity, shell stage casing (4.2) and shell back segment (4.3), front housing section (4.1) and capping
(3.3) it connects, the captured area of shell stage casing (4.2) is gradually reduced along water (flow) direction, and shell back segment (4.3) end is connected with
It is discharged end interface (6).
4. the non-maintaining check valve of a kind of valve according to claim 3, which is characterized in that the outer wall of valve shell (4)
It is provided with flow direction indicia arrow (8).
5. the non-maintaining check valve of a kind of valve according to claim 1, which is characterized in that the gradient of scarf port is
θ, -140 ° of θ=120 °.
6. the non-maintaining check valve of a kind of valve according to claim 1, which is characterized in that one end of valve piece (5) is logical
The top that waterproof adhesive agent is bonded in valve water inlet pipe (3.1) is crossed, is provided at the top of valve water inlet pipe (3.1) for compressing valve piece
(5) pressing plate (7), pressing plate (7) are fixed by plating brass screw.
7. the non-maintaining check valve of a kind of valve according to claim 6, which is characterized in that the width of valve piece (5) is super
Go out the 5mm-10mm of scarf port both sides of the edge, the length of valve piece (5) exceeds the 10mm- at scarf port bottom edge
15mm。
8. the non-maintaining check valve of a kind of valve according to claim 7, which is characterized in that the material of valve piece (5) is
Anti-aging, corrosion-resistant, acid and alkali-resistance macromolecule organic material.
9. a kind of building-drainage system using the non-maintaining check valve of valve, which is characterized in that including being set to room floors
(9) lower section and sequentially connected floor drain (10), drainpipe (11), connect mouth (12), manifold trunk (13), valve more and exempt to tie up
Check valve and diversion pipe (14) are protected, diversion pipe (14) is communicated with blowdown manifold (15), and the non-maintaining check valve of valve uses
The non-maintaining check valve of valve in claim 1-8 described in any claim.
10. a kind of building-drainage system using the non-maintaining check valve of valve according to claim 9, feature exist
In manifold trunk (13), the non-maintaining check valve of valve and diversion pipe (14) integrally tilt down 5 ° -10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640132.9A CN108797726A (en) | 2018-06-20 | 2018-06-20 | A kind of non-maintaining check valve of valve and building-drainage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640132.9A CN108797726A (en) | 2018-06-20 | 2018-06-20 | A kind of non-maintaining check valve of valve and building-drainage system |
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| CN108797726A true CN108797726A (en) | 2018-11-13 |
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| CN201810640132.9A Pending CN108797726A (en) | 2018-06-20 | 2018-06-20 | A kind of non-maintaining check valve of valve and building-drainage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636527A (en) * | 2020-06-08 | 2020-09-08 | 杭州光亮暖通科技有限公司 | Diaphragm type barrier |
| CN112127437A (en) * | 2020-10-11 | 2020-12-25 | 应国珍 | Check valve for domestic sewage pipeline |
| CN112127436A (en) * | 2020-10-11 | 2020-12-25 | 应国珍 | Check valve for public sewage pipeline |
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| CN2658242Y (en) * | 2003-10-17 | 2004-11-24 | 张荣森 | Drain cover device of sewer pipe |
| KR20090129283A (en) * | 2008-06-11 | 2009-12-16 | 임회규 | Drain pipe a bad smell cutoff |
| CN201746904U (en) * | 2010-08-20 | 2011-02-16 | 程九如 | Deodorizing device suitable for drainage and blowdown pipelines |
| CN202416474U (en) * | 2012-01-16 | 2012-09-05 | 李景林 | Closed joint of closed type sewer pipe |
| CN103967086A (en) * | 2013-01-29 | 2014-08-06 | 孙争鸣 | Pipeline anti-reversing device with clockwise-opened soft detachable cap |
| CN203384428U (en) * | 2013-03-12 | 2014-01-08 | 李林林 | Sewer check valve |
| CN205314183U (en) * | 2016-01-21 | 2016-06-15 | 山东文远建材科技股份有限公司 | Deodorant elbow |
| CN206512799U (en) * | 2017-01-25 | 2017-09-22 | 董泽华 | Indoor drainage pipe deodorized valve |
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| CN111636527A (en) * | 2020-06-08 | 2020-09-08 | 杭州光亮暖通科技有限公司 | Diaphragm type barrier |
| CN112127437A (en) * | 2020-10-11 | 2020-12-25 | 应国珍 | Check valve for domestic sewage pipeline |
| CN112127436A (en) * | 2020-10-11 | 2020-12-25 | 应国珍 | Check valve for public sewage pipeline |
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Application publication date: 20181113 |
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