CN106051235A - Fireproof check valve - Google Patents
Fireproof check valve Download PDFInfo
- Publication number
- CN106051235A CN106051235A CN201610654830.5A CN201610654830A CN106051235A CN 106051235 A CN106051235 A CN 106051235A CN 201610654830 A CN201610654830 A CN 201610654830A CN 106051235 A CN106051235 A CN 106051235A
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- China
- Prior art keywords
- valve block
- valve
- fixture
- fire
- check valve
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- 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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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/04—Flame traps allowing passage of gas but not of flame or explosion wave in flues or chimneys
-
- 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
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention relates to a fireproof check valve. The fireproof check valve solves the problems that a fireproof check valve is short in service life and poor in user experience. The fireproof check valve comprises a body, a valve block and a connecting mechanism. The body is provided with an exhaust port covered with the valve block. The body and the valve block are connected through the connecting mechanism. The fireproof check valve further comprises a fixing piece and a flexible piece used for relieving acting force that the valve block collides with the body. One end of the fixing piece is connected with the valve block, and the other end of the fixing piece extrudes the flexible piece and makes the flexible piece clamped between the fixing piece and the valve block.
Description
Technical field
The present invention relates to a kind of fire-preventing check valve.
Background technology
Fire-preventing check valve includes valve body, valve block, torsion spring and connecting rod, and valve body has air inlet and air outlet, and valve block lid is located at
On air outlet, connecting rod one end is rotationally connected with valve body, and the connecting rod other end is rotationally connected with valve block, when torsion spring drive link is relative to valve
When body rotates, valve block can close air outlet.Owing to valve block and valve body are each made of a metal, therefore, when valve block closes air outlet,
Valve block clashes into valve body and also produces noise, and this has resulted in fire-preventing check valve and has had that service life is short, the shortcoming of poor user experience.
Summary of the invention
Problem to be solved by this invention is just to provide a kind of fire-preventing check valve, improves the Consumer's Experience of fire-preventing check valve also
Improve its service life.
For solving the problems referred to above, the present invention provides following technical scheme:
A kind of fire-preventing check valve, including body, valve block and bindiny mechanism, described body is provided with air vent, described valve block
Lid is located on described air vent, and described body is connected by described bindiny mechanism with described valve block, and described fire-preventing check valve also wraps
Include fixture and clash into the flexible piece of described body active force for slowing down described valve block, described fixture one end and described valve block
Connect, the described fixture other end extrude described flexible piece and make this flexible piece be clamped in described fixture and described valve block it
Between.
Further, described fixture offsets with described body during described valve block closes described air vent.
Further, described flexible piece includes the connecting portion for connecting described valve block and sealing, and described sealing is even
Be connected on the described connecting portion side towards described body, when described valve block lid is located on described air vent, described sealing and/or
Described connecting portion fits described body to close the gap between described valve block and described body.
Further, on the axial direction of described valve block, the gauge of described sealing is less than described connecting portion
Gauge.
Further, described connecting portion is provided with groove, and described valve block inserts described groove.
Further, described connecting portion is end to end annular rubber ring, and described sealing is by described ring-shaped rubber
Enclose outward extending ring packing sheet.
Further, the angle between described annular rubber ring and described ring packing sheet is less than 60 °.
Further, described fixture is spring leaf, described spring leaf and described connecting portion and the connection of described sealing
Place offsets, or described spring leaf offsets with described connecting portion.
Further, described fixture is connected by screw with described valve block.
A kind of fire-preventing check valve, including body, valve block and bindiny mechanism, described body is provided with air vent, described valve block
Lid is located on described air vent, and described body is connected by described bindiny mechanism with described valve block, and described fire-preventing check valve also wraps
Include fixture and clash into the flexible piece of described body active force for slowing down described valve block, described fixture one end and described body
Connect, the described fixture other end extrude described flexible piece and make this flexible piece be clamped in described fixture and described body it
Between.
Beneficial effects of the present invention:
1, the fire-preventing check valve of the present invention includes flexible piece, and flexible piece clashes into the active force of body for slowing down valve block, when
When the active force of valve block shock body diminishes, the noise that valve block cut out air vent sends will be greatly reduced.It is so designed that, fire prevention
Check-valves is by reducing the noise sent in its work process, to realize improving Consumer's Experience.
2, owing to flexible piece is for slowing down the active force of valve block shock body, therefore, when valve block clashes into the active force of body
When diminishing, the service life of valve block also can increase accordingly.The valve block of fire-preventing check valve belongs to wearing detail, when the service life of valve block
During increase, the service life of fire-preventing check valve can increase accordingly.
3, the fire-preventing check valve of the present invention also includes that fixture, fixture one end are connected with valve block, and the fixture other end squeezes
Pressure flexible piece, flexible piece is clamped between fixture and valve block under the extruding of fixture, when flexible piece be clamped in fixture with
Time between valve block, flexible piece is not susceptible to change, to guarantee the sealing of fire-preventing check valve relative to the position of valve block.So set
Meter, can increase the service life of fire-preventing check valve accordingly.
4, the fixture of the present invention can offset with described body during described valve block closes described air vent, and this is just
It is meant that at least partly fixture is corresponding adjacent to the sidewall of air vent with body, to realize reducing between flexible piece and body
Contact area；During valve block opens air vent, the frictional force produced between flexible piece and body will diminish, and work as flexible piece
When the frictional force being subject in the course of the work diminishes, the service life of flexible piece will be increased.Owing to flexible piece belongs to loss
Part, therefore, when increasing the service life of flexible piece, the service life of fire-preventing check valve can increase accordingly.
5, the fire-preventing check valve of the present invention also includes that fixture, fixture one end are connected with body, and the fixture other end squeezes
Pressure flexible piece, flexible piece is clamped between fixture and body under the extruding of fixture, when flexible piece be clamped in fixture with
Time between body, the position of flexible piece opposing body is not susceptible to change, to guarantee the sealing of fire-preventing check valve.So set
Meter, can increase the service life of fire-preventing check valve accordingly.
Accompanying drawing explanation
Fig. 1 is the sectional view of preferred embodiment of the present invention middle valve plate；
Fig. 2 is the fragmentary front view of fire-preventing check valve in the preferred embodiment of the present invention；
Fig. 3 is the side view of bindiny mechanism in the preferred embodiment of the present invention.
Detailed description of the invention
The technical scheme of the embodiment of the present invention is explained and illustrated by the accompanying drawing below in conjunction with the embodiment of the present invention, but under
State embodiment and be only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art
On the premise of not making creative work, obtained other embodiments, broadly fallen into protection scope of the present invention.
Embodiment one
Seeing figures.1.and.2, a kind of fire-preventing check valve, including body, valve block 1 and bindiny mechanism, body is provided with aerofluxus
Mouthful, valve block 1 lid is located on air vent, and body is connected by bindiny mechanism with valve block 1.
Seeing figures.1.and.2, the body of the present embodiment includes valve body and the valve seat 7 being fixed on valve body, and valve body is provided with leads
Wind passage, air-guiding aisle has air inlet and air outlet, and described air vent is air outlet, and valve block 1 lid is located at air outlet, valve seat
7 are connected adjacent to the sidewall of air outlet with air-guiding aisle；The body of the present embodiment also includes that rotating shaft 61, bindiny mechanism are led to valve seat 7
Crossing rotating shaft 61 to be rotationally connected, 61 rotation around the shaft of flexible member 5 drive connection mechanism, to keep valve block 1 to close becoming of air outlet
Gesture.In other embodiments of the present invention, described air vent is air inlet, and valve block lid is located at air inlet, valve seat and air-guiding aisle
The sidewall of neighbouring air inlet is connected as a single entity by welding, or, valve seat and air-guiding aisle pass through spiral shell adjacent to the sidewall of air inlet
Post connects；Additionally, in other embodiments of the invention, body includes that rotating shaft is passed through in valve body and rotating shaft, bindiny mechanism and valve body
Connect.
With reference to Fig. 1, Fig. 2 and Fig. 3, the bindiny mechanism of the present embodiment includes connecting rod 3 and the axle sleeve 4 being fixed on connecting rod 3, even
Bar 3 is connected with valve block 1, and axle sleeve 4 is provided with the first screwed hole 41, and the axial length of the first screwed hole 41 is H1, the thickness of connecting rod 1
For H2, H1 ＞ H2.When rotating shaft 61 runs through the first screwed hole 41, rotating shaft 61 is threadeded with axle sleeve 4.Other realities in the present invention
Executing in example, bindiny mechanism includes that connecting rod, connecting rod are connected with shaft thread；Or, connecting rod outline is circular, and rotating shaft is provided with
Through hole, connecting rod runs through through hole.
With reference to Fig. 1, difference from prior art is: the fire-preventing check valve of the present embodiment also includes fixture 10 and uses
In slowing down valve block 1 and clash into the flexible piece 2 of body active force, fixture 10 one end is connected with valve block 1, and fixture 10 other end extrudes
Flexible piece 2 also makes this flexible piece 2 be clamped between fixture 10 and valve block 1, concrete: flexible piece 2 is used for slowing down valve block 1 and clashes into
The active force of valve body, when valve block 1 closes air vent, valve block 1 is fitted valve body by flexible piece 2, closes aerofluxus realizing valve block 1
Mouthful.In other embodiments of the invention, body includes valve seat and is provided with the annular slab of air vent, and annular slab is with valve seat even
Connecing, and described annular slab is flat tabular, when valve block closes air vent, valve block passes through flexible piece laminating annular slab, with
Realize valve block and close air vent.
With reference to Fig. 1, the fixture 10 of the present embodiment offsets with body during valve block 1 closes air vent, concrete:
During valve block 1 closes air vent, fixture 10 will occur mutually collision with valve body, when valve block 1 is closed by flexible piece 2
During air vent, between fixture 10 and valve body between be separated with certain interval.Due to flexible piece 2 be clamped in fixture 10 and valve block 1 it
Between, therefore, whether fixture 10 can occur mutually collision with valve body during valve block 1 closes air vent, depends on flexibility
The extruding force that part 2 is subject to.In other embodiments of the invention, close during air vent at valve block, fixture will not with
There is mutually collision in valve body, when valve block closes air vent by flexible piece, between fixture and valve body between be separated with certain interval；
Or, during valve block closes air vent, fixture will occur mutually collision with valve body, when valve block is closed by flexible piece
When closing air vent, fixture offsets with valve body.
With reference to Fig. 1, the flexible piece 2 of the present embodiment includes the connecting portion 21 for connecting valve block 1 and sealing 22, sealing
22 are connected to the connecting portion 21 side towards body, and when valve block 1 lid is located on air vent, sealing 22 and/or connecting portion 21 paste
Conjunction body is to close the gap between valve block 1 and body, concrete: when valve block 1 lid is located on air vent, sealing 22 is fitted
Valve body is to close the gap between valve block 1 and valve body；Or, when valve block 1 lid is located on air vent, sealing 22 and connection
Portion 21 fits valve body to close the gap between valve block 1 and valve body；Or, when valve block 1 lid is located on air vent, connecting portion
21 laminating valve bodies are to close the gap between valve block 1 and valve body.
Preferably, on the axial direction of valve block 1, the gauge of sealing 22 is less than the gauge of connecting portion 21.
When sealing 22 thickness is less, the difficulty that sealing 22 is fitted on valve body will be reduced.Certainly, at other of the present invention
In embodiment, the gauge of sealing can be more than or equal to the gauge of connecting portion.
With reference to Fig. 1, the connecting portion 21 of the present embodiment is provided with groove 211, and valve block 1 inserts groove 211.At its of the present invention
In his embodiment, connecting portion is pasted onto on valve block；Or connecting portion is fixed on valve block by rivet.
With reference to Fig. 1, the connecting portion 21 of the present embodiment is end to end annular rubber ring, and groove 211 is for being arranged on annular
Annular groove inside rubber figure, sealing 22 is by annular rubber ring outward extending ring packing sheet, this ring packing sheet
It is made up of rubber.In other embodiments of the invention, O-ring seal is connected as a single entity by glue with ring packing sheet.When
So, in other embodiments of the invention, connecting portion is annular plastics figure, and this annular plastics circle is spliced by some arc plastics sections
Being formed, sealing is by annular plastics circle outward extending ring packing sheet, and this ring packing sheet is made up of resistance to Pyroxylin.
Preferably, the angle between annular rubber ring and ring packing sheet is α, α ＜ 60 °.It is so designed that, when valve body is neighbouring
There is rough situation in the sidewall of air vent, and during α ＜ 60 °, annular rubber ring extruding annular diaphragm seal also makes annular close
Mounting laminating valve body, closes air vent realizing valve block 1.
With reference to Fig. 1, the fixture 10 of the present embodiment is spring leaf, and spring leaf offsets with connecting portion 21.At its of the present invention
In his embodiment, spring leaf offsets with the junction of connecting portion and sealing.Certainly, in other embodiments of the invention, Gu
Locking member can be made up of plastic refractory, and described plastic refractory is flat.
Preferably, fixture 10 is connected by screw with valve block 1, and described screw is referred to as for ease of distinguishing by the present embodiment
One screw.In other embodiments of the invention, fixture and valve block pass through rivet interlacement.
With reference to Fig. 2, fire-preventing check valve also includes that the second screw 6, rotating shaft 61 are the bar portion of the second screw 6, and, the second spiral shell
Nail 6 is threadeded with valve seat 7, to stop the second screw 6 opposite valve seat 7 to occur position to move.Other embodiments in the present invention
In, rotating shaft is screw rod, and this screw rod is one-body molded with valve seat.
With reference to Fig. 1 and Fig. 3, the connecting rod 3 of the present embodiment is rotationally connected with valve block 1, concrete: fire-preventing check valve also includes the
Three screw 8 and the 4th screws, connecting rod 3 is provided with the second screwed hole 31 away from one end of axle sleeve 4, and bindiny mechanism also includes connector 9,
Connector 9 is provided with first and dodges hole, and the 3rd screw 8 is dodged hole through first and is connected with the second screwed hole 31, to realize connecting
Part 9 is fixed on connecting rod 3；Valve block 1 is provided with second and dodges hole 11, and connector 9 is additionally provided with the 3rd screwed hole, and the 4th screw is worn
Cross second to dodge hole 11 and be connected with the 3rd screwed hole, be fixed on valve block 1 realizing connector 9.It is so designed that, increases valve block 1
The range of movement of bindiny mechanism relatively.In other embodiments of the invention, connecting rod is rotationally connected with valve block, or, connecting rod
It is fixed on valve block.
With reference to Fig. 3, it is preferred that connecting rod 3 is additionally provided with escape groove 32 away from one end of axle sleeve 4, when the 4th screw is through second
Dodging hole 11 when being connected with the 3rd screwed hole, escape groove 32 can avoid connecting rod 3 to interfere with the 4th screw.
Embodiment two
A kind of fire-preventing check valve, including body, valve block and bindiny mechanism, described body is provided with air vent, described valve block
Lid is located on described air vent, and described body is connected by described bindiny mechanism with described valve block.
The body of the present embodiment includes valve body and the valve seat being fixed on valve body, and valve body is provided with air-guiding aisle, and wind-guiding leads to
Road has air inlet and air outlet, and described air vent is air outlet, and valve block lid is located at air outlet, and valve seat is neighbouring with air-guiding aisle
The sidewall of air outlet connects；The body of the present embodiment also includes rotating shaft, and bindiny mechanism is connected by axis of rotation with valve seat, elastic
Element drives bindiny mechanism rotates around the axis, to keep valve block to close the trend of air outlet.In other embodiments of the present invention, institute
Stating air vent is air inlet, and valve block lid is located at air inlet, and valve seat passes through, adjacent to the sidewall of air inlet, the company of welding with air-guiding aisle
It is integrated, or, valve seat and air-guiding aisle pass through Stud connection adjacent to the sidewall of air inlet；Additionally, at other of the present invention
In embodiment, body includes valve body and rotating shaft, and bindiny mechanism is connected by axis of rotation with valve body.
The bindiny mechanism of the present embodiment includes connecting rod and the axle sleeve being fixed on connecting rod, and connecting rod is connected with valve block, on axle sleeve
Being provided with the first screwed hole, the axial length of the first screwed hole is H1, and the thickness of connecting rod is H2, H1 ＞ H2.When rotating shaft runs through first
During screwed hole, rotating shaft is connected with sleeve thread.In other embodiments of the invention, bindiny mechanism includes connecting rod, connecting rod with turn
Male thread connects.
Difference from prior art is: the fire-preventing check valve of the present embodiment also includes fixture and for slowing down valve block
Clashing into the flexible piece of body active force, fixture one end is connected with body, and fixture other end extruding flexible piece also makes this flexibility
Part is clamped between fixture and body, concrete: flexible piece clashes into the active force of valve body for slowing down valve block, when valve block is closed
During air vent, valve block is by flexible piece laminating valve body, to realize valve block closedown air vent.In other embodiments of the invention,
Body includes valve seat and is provided with the annular slab of air vent, and annular slab is connected with valve seat, and described annular slab is flat plate
Shape, when valve block closes air vent, valve block is by flexible piece laminating annular slab, to realize valve block closedown air vent.
The fixture of the present embodiment offsets with valve block during valve block closes air vent, concrete: close at valve block
During air vent, fixture will occur mutually collision with valve block, when valve block closes air vent by flexible piece, and fixture
And it is separated with certain interval between valve block.Owing to flexible piece is clamped between fixture and valve body, therefore, fixture closes at valve block
Whether with valve block, mutually collision can occur during closing air vent, depend on the extruding force that flexible piece is subject to.The present invention's
In other embodiments, during valve block closes air vent, fixture will not occur mutually collision, when valve block passes through with valve block
Flexible piece close air vent time, between fixture and valve block between be separated with certain interval；Or, the mistake of air vent is closed at valve block
Cheng Zhong, fixture will occur mutually collision with valve block, when valve block closes air vent by flexible piece, fixture and valve block phase
Support.
The flexible piece of the present embodiment includes the connecting portion for connecting body and sealing, and sealing is connected to connecting portion face
To the side of valve block, when valve block lid is located on air vent, sealing and/or connecting portion laminating valve block with close valve block and body it
Between gap, concrete: when valve block lid is located on air vent, between sealing laminating valve block is to close between valve block and valve body
Gap；Or, when valve block lid is located on air vent, sealing and connecting portion laminating valve block are to close between valve block and valve body
Gap；Or, when valve block lid is located on air vent, connecting portion laminating valve block is to close the gap between valve block and valve body.
The connecting portion of the present embodiment is end to end annular rubber ring, and annular rubber ring is pasted onto on valve body, sealing
For by annular rubber ring outward extending ring packing sheet, this ring packing sheet is made up of rubber.
Preferably, the angle between annular rubber ring and ring packing sheet is α, α ＜ 60 °.
The fixture of the present embodiment is spring leaf, and spring leaf offsets with connecting portion.In other embodiments of the invention, bullet
Reed offsets with the junction of connecting portion and sealing.Certainly, in other embodiments of the invention, fixture can be by fire-resistant
Plastics are made, and described plastic refractory is flat.
Preferably, fixture is connected by screw with valve body, and described screw is referred to as first for ease of distinguishing by the present embodiment
Screw.In other embodiments of the invention, fixture and valve body pass through rivet interlacement.
The fire-preventing check valve of the present embodiment also includes the second screw, and rotating shaft is the bar portion of the second screw, and, the second screw
Threaded with valve seat, to stop the second screw opposite valve seat to occur position to move.In other embodiments of the invention, rotating shaft
For screw rod, this screw rod is one-body molded with valve seat.
The connecting rod of the present embodiment is rotationally connected with valve block, concrete: fire-preventing check valve also includes the 3rd screw and the 4th spiral shell
Nail, connecting rod is provided with the second screwed hole away from one end of axle sleeve, and bindiny mechanism also includes connector, and connector is provided with first and dodges
Hole, the 3rd screw dodges hole be connected through first with the second screwed hole, is fixed on connecting rod realizing connector；Valve block is provided with
Second dodges hole, and connector is additionally provided with the 3rd screwed hole, and the 4th screw is dodged Kong Yu tri-screwed hole through second and connected, with
Realize connector to be fixed on valve block.It is so designed that, increases the valve block range of movement relative to bindiny mechanism.At other of the present invention
In embodiment, connecting rod is rotationally connected with valve block.
Preferably, connecting rod is additionally provided with escape groove away from one end of axle sleeve, when the 4th screw dodges Kong Yu tri-through second
When screwed hole connects, escape groove can avoid connecting rod and the 4th screw to interfere.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and is familiar with
Those skilled in the art should be understood that the present invention includes but not limited to accompanying drawing and content described in detailed description of the invention above.
Any it is intended to be included in the scope of claims without departing from the function of the present invention and the amendment of structural principle.
Claims (10)
1. a fire-preventing check valve, including body, valve block and bindiny mechanism, described body is provided with air vent, described valve block lid
Being located on described air vent, described body is connected by described bindiny mechanism with described valve block, it is characterised in that described fire prevention is only
Return valve also include fixture and for slow down described valve block clash into described body active force flexible piece, described fixture one end with
Described valve block connects, and the described fixture other end extrudes described flexible piece and makes this flexible piece be clamped in described fixture with described
Between valve block.
2. fire-preventing check valve as claimed in claim 1, it is characterised in that described fixture cuts out described air vent at described valve block
During offset with described body.
3. fire-preventing check valve as claimed in claim 1, it is characterised in that described flexible piece includes the company for connecting described valve block
Connecing portion and sealing, described sealing is connected to the described connecting portion side towards described body, and described valve block lid is located at described
Time on air vent, described sealing and/or described connecting portion fit described body to close between described valve block and described body
Gap.
4. fire-preventing check valve as claimed in claim 3, it is characterised in that on the axial direction of described valve block, described sealing
Gauge less than the gauge of described connecting portion.
5. fire-preventing check valve as claimed in claim 3, it is characterised in that described connecting portion is provided with groove, and described valve block inserts
Described groove.
6. fire-preventing check valve as claimed in claim 5, it is characterised in that described connecting portion is end to end ring-shaped rubber figure,
Described sealing is by described ring-shaped rubber figure outward extending ring packing sheet.
7. fire-preventing check valve as claimed in claim 6, it is characterised in that between described ring-shaped rubber figure and described ring packing sheet
Angle less than 60 °.
8. fire-preventing check valve as claimed in claim 3, it is characterised in that described fixture is spring leaf, described spring leaf and institute
The junction stating connecting portion and described sealing offsets, or described spring leaf offsets with described connecting portion.
9. fire-preventing check valve as described in one of claim 1 to 8, it is characterised in that described fixture and described valve block pass through spiral shell
Nail connects.
10. a fire-preventing check valve, including body, valve block and bindiny mechanism, described body is provided with air vent, described valve block lid
Being located on described air vent, described body is connected by described bindiny mechanism with described valve block, it is characterised in that described fire prevention is only
Return valve also include fixture and for slow down described valve block clash into described body active force flexible piece, described fixture one end with
Described body connects, and the described fixture other end extrudes described flexible piece and makes this flexible piece be clamped in described fixture with described
Between body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910100899.7A CN110425313B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
| CN201610654830.5A CN106051235B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610654830.5A CN106051235B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910100899.7A Division CN110425313B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106051235A true CN106051235A (en) | 2016-10-26 |
| CN106051235B CN106051235B (en) | 2020-12-22 |
Family
ID=57481083
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610654830.5A Active CN106051235B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
| CN201910100899.7A Active CN110425313B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910100899.7A Active CN110425313B (en) | 2016-08-09 | 2016-08-09 | Fireproof check valve |
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| Country | Link |
|---|---|
| CN (2) | CN106051235B (en) |
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-
2016
- 2016-08-09 CN CN201610654830.5A patent/CN106051235B/en active Active
- 2016-08-09 CN CN201910100899.7A patent/CN110425313B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285816A (en) * | 1991-12-11 | 1994-02-15 | Rapid Developments Ltd. | One way valve |
| CN202659990U (en) * | 2012-06-11 | 2013-01-09 | 保一集团有限公司 | Adjustable swing check valve |
| US20160102780A1 (en) * | 2014-10-14 | 2016-04-14 | Kennedy Valve Company | Cushioned Check Valve |
| CN205026153U (en) * | 2015-10-09 | 2016-02-10 | 杭州小米环境科技有限公司 | Fire -proof check valve |
| CN205908812U (en) * | 2016-08-09 | 2017-01-25 | 杭州小米环境科技有限公司 | Fire -proof check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110425313A (en) | 2019-11-08 |
| CN106051235B (en) | 2020-12-22 |
| CN110425313B (en) | 2021-09-10 |
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