CN106678400B - A kind of fire-preventing check valve - Google Patents
A kind of fire-preventing check valve Download PDFInfo
- Publication number
- CN106678400B CN106678400B CN201710147354.2A CN201710147354A CN106678400B CN 106678400 B CN106678400 B CN 106678400B CN 201710147354 A CN201710147354 A CN 201710147354A CN 106678400 B CN106678400 B CN 106678400B
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- plectrum
- connecting rod
- valve
- valve body
- fire
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Classifications
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- 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)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention relates to a kind of fire-preventing check valve, solve the problems, such as that fire-preventing check valve is lost under high temperature environment every cigarette effect.A kind of fire-preventing check valve, including valve body, valve block, connecting rod, plectrum, temperature-sensing element and elastic element, the valve body is equipped with exhaust outlet, the valve block lid is located on exhaust outlet, the valve block is connect with the valve body by connecting rod, the plectrum is rotatablely connected with the valve body, the temperature-sensing element is fixed on valve body, described elastic element one end is fixedly connected with the valve body, the elastic element other end connect with plectrum and the plectrum is driven to offset with the temperature-sensing element, the plectrum is equipped with clamping portion, and the connecting rod is equipped with clamping engagement portion；When the elastic element drives the plectrum to be rotated relative to the valve body and squeezes the connecting rod, when so that the connecting rod closing the exhaust outlet by the valve block, the clamping portion is matched with the clamping engagement portion, to prevent the connecting rod from being rotated relative to the valve body.
Description
Technical field
The present invention relates to a kind of fire-preventing check valves.
Background technology
Fire-preventing check valve includes valve body, valve block, connecting rod, driving lever, temperature-sensing element and elastic element, and valve body is equipped with exhaust
Mouthful, valve block lid is located on the exhaust outlet, and valve block is connect with valve body by connecting rod, and driving lever is rotatablely connected with valve body, temperature-sensing element
Be fixed on valve body, elastic element one end is fixedly connected with the valve body, the elastic element other end connect with driving lever and drive driving lever with
Temperature-sensing element offsets, and after temperature-sensing element action, elastic element driving driving lever rotates relative to valve body and squeeze connecting rod, so that connecting rod
Exhaust outlet is closed by valve block；When temperature-sensing element acts, and elastic element is by high temperature continuous heating to lost its bounce, dial
Bar detaches under the blowing of air-flow in air with connecting rod.
When being detached with connecting rod under driving lever in air the blowing of air-flow, valve block will blow lower band by air-flow in air
Dynamic connecting rod is rotated relative to valve body, to realize opening exhaust outlet.It is anti-that this will cause fire-preventing check valve to lose under high temperature environment
The effect of fire screen cigarette.
Invention content
Problem to be solved by this invention is just to provide a kind of fire-preventing check valve, so that fire-preventing check valve is under high temperature environment
Play its effect every cigarette.
To solve the above problems, the present invention provides the following technical solutions：
A kind of fire-preventing check valve, including valve body, valve block, connecting rod, plectrum, temperature-sensing element and elastic element, on the valve body
Equipped with exhaust outlet, the valve block lid is located on the exhaust outlet, and the valve block is connect with the valve body by the connecting rod, described
Plectrum is rotatablely connected with the valve body, and the temperature-sensing element is fixed on the valve body, described elastic element one end and the valve
Body is fixedly connected, and the elastic element other end connect with the plectrum and the plectrum is driven to offset with the temperature-sensing element,
The plectrum is equipped with clamping portion, and the connecting rod is equipped with clamping engagement portion；
After the temperature-sensing element action, the elastic element drives the plectrum to be rotated relative to the valve body and squeezes described
Connecting rod, so that the connecting rod closes the exhaust outlet by the valve block；
When the elastic element drives the plectrum that the connecting rod is rotated and squeezed relative to the valve body, so that the connecting rod
When closing the exhaust outlet by the valve block, the clamping portion is matched with the clamping engagement portion, to prevent the connecting rod
It is rotated relative to the valve body.
Further, when the clamping portion is matched with the clamping engagement portion, the plectrum top and the connecting rod
It is corresponded to backwards to the side of the valve block, to prevent the relatively described valve body in the plectrum top from being moved to valve block direction；The plectrum
Lower part is offseted by the clamping portion and the clamping engagement portion, to prevent the plectrum top from being transported to far from the valve block direction
It is dynamic.
Further, the plectrum includes the plectrum ontology being rotatablely connected with the valve body and rotation stop piece, the rotation stop piece
It is rotatablely connected with the plectrum ontology, the clamping portion is the rotation stop piece, and the connecting rod is equipped with card slot, and the card slot is institute
It states clamping engagement portion and the rotation stop piece can be inserted into the card slot.
Further, the connecting rod includes con-rod only and axle sleeve, and the con-rod only is equipped with mounting ring, the installation
Ring is equipped with the mounting hole coordinated with the axle sleeve, and the card slot is opened on the outer profile of the mounting ring.
Further, the con-rod only includes sequentially connected first linkage section and the second linkage section, and described first connects
Section and the valve block is connect to be rotatablely connected, the mounting ring is arranged on second linkage section, first linkage section with it is described
The upper surface of 90 ° of angle ＜ between second linkage section, second linkage section are obliquely installed, and second linkage section is upper
End face is located at axle sleeve one end by the second linkage section and is formed slopely upwards, when the elastic element drives the relatively described valve of plectrum
Body rotates and squeezes the connecting rod, when so that the connecting rod closing the exhaust outlet by the valve block, under the plectrum ontology
Portion can offset with the upper surface of second linkage section.
Further, the plectrum ontology is equipped with the avoid holes for avoiding the connecting rod, when the elastic element drives
It moves the plectrum and the connecting rod is rotated and squeezed relative to the valve body, so that the connecting rod closes the exhaust by the valve block
When mouth, the connecting rod and the hole wall of the avoid holes are interference fitted.
Further, the rotation stop on piece is equipped with baffle, when the elastic element drives the plectrum and temperature-sensitive member
When part offsets, the baffle can offset with the plectrum ontology, to prevent the rotation stop piece from being moved to the card slot direction.
Further, the plectrum ontology is equipped with shaft, and the rotation stop on piece is equipped with the axis hole coordinated with the shaft.
Further, the plectrum ontology is equipped with the first notch, and the shaft is located at described the by the plectrum ontology
The side wall of one indentation, there extends outward to form.
Further, the rotation stop on piece is equipped with the second notch.
Beneficial effects of the present invention：
The fire-preventing check valve of the present invention includes plectrum and connecting rod, and plectrum is equipped with clamping portion, and connecting rod, which is equipped with, to be engaged by clamping
Portion, after temperature-sensing element action, elastic element driving plectrum rotates relative to valve body and squeezes connecting rod, so that connecting rod is closed by valve block
Close exhaust outlet；When elastic element driving plectrum connecting rod is rotated and squeezed relative to valve body so that connecting rod closes exhaust outlet by valve block
When, clamping portion is matched with clamping engagement portion, and range of the plectrum with respect to link motion is limited to realize.So design, passes through limit
Range of the plectrum with respect to link motion is determined, to increase the resistance that connecting rod is rotated relative to valve body, when the resistance that connecting rod is rotated relative to valve body
When power increases, fire-proof smoke insulation effect will be greatly improved fire-preventing check valve in a high temperauture environment.
Description of the drawings
Fig. 1 is the stereogram of fire-preventing check valve in the preferred embodiment of the present invention；
Fig. 2 is the stereogram of part fire-preventing check valve in the preferred embodiment of the present invention (temperature-sensing element does not move)；
Fig. 3 is the stereogram of plectrum ontology in the preferred embodiment of the present invention；
Fig. 4 is the stereogram that the preferred embodiment of the present invention stops rotor；
Fig. 5 is the front view of connecting rod in the preferred embodiment of the present invention；
Fig. 6 is the stereogram of part fire-preventing check valve in the preferred embodiment of the present invention (temperature-sensing element has moved).
Specific implementation mode
The technical solution of the embodiment of the present invention is explained and illustrated with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiment without making creative work, belongs to protection scope of the present invention.
Referring to Fig.1, a kind of fire-preventing check valve, including valve body 1, valve block 2, connecting rod 3, plectrum, temperature-sensing element 5 and elasticity member
The elastic element is known as the first elastic element 6 by part, the present embodiment for ease of distinguishing, and valve body 1 is equipped with exhaust outlet 11, valve block
2 lids are located on exhaust outlet 11, and valve block 2 is connect with valve body 1 by connecting rod 3, and plectrum is rotatablely connected with valve body 1, and temperature-sensing element 5 is fixed
On valve body 1,6 one end of the first elastic element is fixedly connected with valve body 1, and 6 other end of the first elastic element connect and drives with plectrum
Dynamic plectrum offsets with temperature-sensing element 5, and plectrum is equipped with clamping portion, and connecting rod 3 is equipped with clamping engagement portion；
After temperature-sensing element 5 acts, the first elastic element 6 drives plectrum to be rotated relative to valve body 1 and squeezes connecting rod 3, so that even
Bar 3 closes exhaust outlet 11 by valve block 2；
When the first elastic element 6 driving plectrum with respect to valve body 1 rotation and squeeze connecting rod 3 so that connecting rod 3 is closed by valve block 2
When closing exhaust outlet 11, clamping portion is matched with clamping engagement portion, to prevent connecting rod 3 from being rotated relative to valve body 1.
In the present embodiment, the temperature-sensing element 5 includes the first copper sheet and the second copper sheet, and the first copper sheet passes through with the second copper sheet
Meltable solder (the meltable solder includes the solders such as secret base, indium base, tinbase, cadmium base, zinc-base and lead base) is linked together, the first bronze medal
Piece is fixedly connected with valve seat 1, and the second copper sheet offsets with plectrum ontology 4, after meltable solder high temperature melting, the first copper sheet and second
Copper sheet detaches, and after the blocking that plectrum ontology 4 loses the second copper sheet, the first elastic element 6 drives plectrum ontology 4 and 3 phase of connecting rod
It supports, to realize that rotation stop piece 7 is inserted into card slot 3111.In other embodiments of the invention, the temperature-sensing element is memory metal,
When memory metal receives deformation temperature, memory metal is detached with plectrum ontology, to realize that the first elastic element drives plectrum
Ontology offsets with connecting rod；When the temperature that memory metal receives surrounding is less than deformation temperature, memory metal will restore originally
Shape.
It should be noted that：In the present embodiment, " action of temperature-sensing element 5 " refers to that " meltable solder is heated to lead to the
Two copper sheets are detached with the first copper sheet " This move.
It can be seen that from Fig. 1 and Fig. 6 when clamping portion is matched with clamping engagement portion, plectrum top is with connecting rod 3 backwards to valve
The side of piece 2 corresponds to, to prevent plectrum top from being moved to 2 direction of valve block with respect to valve body 1；Plectrum lower part passes through clamping portion and clamping
Auxiliary section offsets, to prevent plectrum top from being moved to far from 2 direction of valve block.In other embodiments of the invention, work as clamping portion
When being matched with clamping engagement portion, plectrum top can not also be corresponding backwards to the side of valve block with connecting rod.
With reference to Fig. 2, the plectrum of the present embodiment includes the plectrum ontology 4 being rotatablely connected with valve body 1, specifically：From Fig. 2 and figure
3 as can be seen that plectrum ontology 4 is equipped with two first rotating shafts 42 and a gag lever post 43, sets that there are two the first axis holes on valve body 1
12, when a wherein first rotating shaft 42 is inserted in one of the first axis hole 12, and another first rotating shaft 42 is inserted into another
When the first axis hole 12, plectrum ontology 4 is rotatablely connected with valve body 1；A wherein first rotating shaft 42 is parallel with gag lever post 43 and two
Person corresponds to, and the first elastic element 6 is sleeved in the first rotating shaft 42, and 6 other end of the first elastic element squeezes gag lever post 43, to keep
Plectrum ontology 4 squeezes the trend of temperature-sensing element 5.So design increases the resistance to deformation intensity of plectrum ontology 4.In its of the present invention
In his embodiment, first rotating shaft is arranged on valve body, and the first axis hole is opened on plectrum ontology, and the first elastic element other end squeezes
Press plectrum ontology.
With reference to Fig. 2, the plectrum of the present embodiment further includes rotation stop piece 7, and rotation stop piece 7 is rotatablely connected with plectrum ontology 4, the card
Rotor 7 until socket part, connecting rod 3 are equipped with card slot 3111, and the card slot 3111 is clamping engagement portion and rotation stop piece 7 can be inserted into card
In slot 3111, specifically：From figs. 3 and 4 it can be seen that plectrum ontology 4 is equipped with shaft, the present embodiment is for ease of distinguishing institute
It states shaft and is known as the second shaft 44, rotation stop piece 7 is equipped with the axis hole coordinated with the second shaft 44, and the present embodiment will for ease of distinguishing
The axis hole is known as the second axis hole 73, and the second shaft 44 is inserted into the second axis hole 73, to realize that rotation stop piece 7 is rotated with plectrum ontology 4
Connection.So design reduces the thickness of plectrum ontology 4.In other embodiments of the invention, the second shaft is arranged in rotation stop piece
On, the second axis hole is opened on plectrum ontology.
Certainly, in other embodiments of the invention, rotation stop piece can be linked together with plectrum ontology, when rotation stop piece and be dialled
When piece ontology is linked together, card slot is opened in rotation stop on piece, and connecting rod is equipped with the protrusion coordinated with card slot.
Referring to Fig.1, the connecting rod 3 of Fig. 2 and Fig. 5, the present embodiment include con-rod only 31 and axle sleeve 32, are set on con-rod only 31
Have a mounting ring 311, mounting ring 311 is equipped with the mounting hole 3022 coordinate with axle sleeve 32, the insertion mounting hole 3022 of axle sleeve 32 and
Axle sleeve 32 is linked together with con-rod only 31 by welding, and card slot 3111 is opened on the outer profile of mounting ring 311.So set
Meter improves the positional precision of card slot 3111.In other embodiments of the invention, axle sleeve is integrally formed with con-rod only, also,
Card slot is opened on axle sleeve.
Connect referring to Fig.1 including sequentially connected first linkage section 301 and second with Fig. 5, the con-rod only 31 of the present embodiment
Section 302 is connect, the first linkage section 301 is rotatablely connected with valve block 2, and mounting ring 311 is arranged on the second linkage section 302, the first connection
Angle between section 301 and the second linkage section 302 is a, and the upper surface 3021 of 90 ° of a ＜, the second linkage section 302 are obliquely installed, and
And the upper surface 3021 of second linkage section 302 is located at 32 one end of axle sleeve by the second linkage section 302 and is formed slopely upwards, when first
Elastic element 6 drives plectrum ontology 4 to be rotated relative to valve body 1 and squeezes connecting rod 3, so that connecting rod 3 closes exhaust outlet 11 by valve block 2
When, 4 lower part of plectrum ontology can offset with the upper surface 3021 of the second linkage section 302.So design increases 4 top of plectrum ontology
The resistance moved to 2 direction of valve block.In other embodiments of the invention, the upper surface of the second linkage section is horizontally disposed, when the
One elastic element driving plectrum ontology rotates relative to valve body and squeezes connecting rod, when so that connecting rod closing exhaust outlet by valve block, dials
Piece body lower part and the upper surface of the second linkage section offset.
With reference to Fig. 2 and Fig. 5, the fire-preventing check valve of the present embodiment further includes screw 20, bolt 8 and nut 9, and screw 20 runs through
First through hole on valve block 2 is simultaneously fixedly connected with the first threaded hole 3011 on the first linkage section 301, to realize connecting rod 3 and valve
Piece 2 is rotatablely connected；Second through-hole of the bolt 8 on valve body 1, the second threaded hole 321 on axle sleeve 32, the third on valve body 1
It after through-hole, is fixedly connected with the third threaded hole on nut 9, to realize that connecting rod 3 is rotatablely connected with valve body 1.In its of the present invention
In his embodiment, connecting rod is rotatablely connected with valve block by the first rivet, and connecting rod is rotatablely connected with valve body by the second rivet, when even
When bar is rotatablely connected with valve body by the second rivet, the second rivet is fixedly connected with connecting rod.
With reference to Fig. 2 and Fig. 3, the plectrum ontology 4 of the present embodiment is equipped with the avoid holes 41 for avoiding connecting rod 3, when first
Elastic element 6 drives plectrum ontology 4 to be rotated relative to valve body 1 and squeezes connecting rod 3, so that connecting rod 3 closes exhaust outlet 11 by valve block 2
When, connecting rod 3 and the hole wall of avoid holes 41 are interference fitted.So design, when 4 opposite valve of the first elastic element 6 driving plectrum ontology
Body 1 rotates and squeezes connecting rod 3, when so that connecting rod 3 closing exhaust outlet 11 by valve block 2, further increases plectrum ontology 4 with respect to valve
Suffered resistance in 1 rotation process of body.
Preferably, the plectrum ontology 4 of the present embodiment is equipped with the first notch 45, and the second shaft 44 is located at by plectrum ontology 4
Side wall at first notch 45 extends outward to form.So design avoids in rotation process of the rotation stop piece 7 with respect to plectrum ontology 4
It is interfered with valve body 1.
Referring to FIG. 1, FIG. 2 and FIG. 4, the rotation stop piece 7 of the present embodiment is equipped with baffle 71, when the first elastic element 6 drives institute
When stating plectrum ontology 4 and temperature-sensing element 5 and offseting, baffle 71 can offset with plectrum ontology 4, to prevent rotation stop piece 7 to card slot 3111
Direction moves.So design, when temperature-sensing element 5 is not operating, clamping portion can not be matched with clamping engagement portion.
Referring to Figures 1 and 2, the fire-preventing check valve of the present embodiment further includes the second elastic element 10 being sleeved on axle sleeve 32,
Second elastic element, 10 one end is fixedly connected with valve body 1, and 10 other end of the second elastic element is fixedly connected with con-rod only 31, when
When temperature-sensing element 5 is not operating, the second elastic element 10 release elastic potential energy simultaneously drives connecting rod 3 to be rotated relative to valve body 1, to realize valve
Piece 2 closes exhaust outlet 11.
With reference to Fig. 2 and Fig. 4, the rotation stop piece 7 of the present embodiment is equipped with the second notch for avoiding the second elastic element 10
72.So design avoids rotation stop piece 7 and the second elastic element 10 from generating interference.
In the present embodiment, first elastic element 6 and second elastic element 10 are torsional spring.In other of the present invention
In embodiment, first elastic element and second elastic element are compressed spring.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
Those skilled in the art should be understood that the present invention including but not limited to attached drawing and the above content described in specific implementation mode.
The modification of any function and structure principle without departing from the present invention is intended to be included in the range of claims.
Claims (10)
1. a kind of fire-preventing check valve, including valve body, valve block, connecting rod, plectrum, temperature-sensing element and elastic element, set on the valve body
There are exhaust outlet, the valve block lid to be located on the exhaust outlet, the valve block is connect with the valve body by the connecting rod, described group
Piece is rotatablely connected with the valve body, and the temperature-sensing element is fixed on the valve body, described elastic element one end and the valve body
It being fixedly connected, the elastic element other end connect with the plectrum and the plectrum is driven to offset with the temperature-sensing element,
It is characterized in that, the plectrum is equipped with clamping portion, and the connecting rod is equipped with clamping engagement portion；
After fusing or deformation action occur for the temperature-sensing element, the elastic element drives the relatively described valve body of plectrum
The connecting rod is rotated and squeezes, so that the connecting rod closes the exhaust outlet by the valve block；
When the elastic element drives the plectrum that the connecting rod is rotated and squeezed relative to the valve body, so that the connecting rod passes through
When the valve block closes the exhaust outlet, the clamping portion is matched with the clamping engagement portion, to prevent the connecting rod opposite
The valve body rotation.
2. fire-preventing check valve as described in claim 1, which is characterized in that when the clamping portion is matched with the clamping engagement portion
When, the plectrum top is corresponding backwards to the side of the valve block with the connecting rod, to prevent the relatively described valve in the plectrum top
Body is moved to valve block direction；The plectrum lower part is offseted by the clamping portion and the clamping engagement portion, to prevent described dial
Piece top is moved to far from the valve block direction.
3. fire-preventing check valve as described in claim 1, which is characterized in that the plectrum includes being dialled with what the valve body was rotatablely connected
Piece ontology and rotation stop piece, the rotation stop piece are rotatablely connected with the plectrum ontology, and the clamping portion is the rotation stop piece, the company
Bar is equipped with card slot, and the card slot is the clamping engagement portion and the rotation stop piece can be inserted into the card slot.
4. fire-preventing check valve as claimed in claim 3, which is characterized in that the connecting rod includes con-rod only and axle sleeve, the company
Bar body is equipped with mounting ring, and the mounting ring is equipped with the mounting hole coordinated with the axle sleeve, and the card slot is opened in described
On the outer profile of mounting ring.
5. fire-preventing check valve as claimed in claim 4, which is characterized in that the con-rod only includes sequentially connected first connection
Section and the second linkage section, first linkage section are rotatablely connected with the valve block, and the mounting ring setting is in second connection
The upper surface of Duan Shang, 90 ° of the angle ＜ between first linkage section and second linkage section, second linkage section tilt
Setting, and the upper surface of second linkage section is located at axle sleeve one end by the second linkage section and is formed slopely upwards, when the elasticity
Element drives the plectrum that the connecting rod is rotated and squeezed relative to the valve body, so that the connecting rod closes institute by the valve block
When stating exhaust outlet, the plectrum body lower part can offset with the upper surface of second linkage section.
6. the fire-preventing check valve as described in one of claim 3 to 5, which is characterized in that the plectrum ontology is equipped with for avoiding
The avoid holes of the connecting rod, when the elastic element drives the plectrum that the connecting rod is rotated and squeezed relative to the valve body, with
When the connecting rod being made to pass through the valve block closing exhaust outlet, the connecting rod and the hole wall of the avoid holes are interference fitted.
7. the fire-preventing check valve as described in one of claim 3 to 5, which is characterized in that the rotation stop on piece is equipped with baffle, when described
When elastic element drives the plectrum to offset with the temperature-sensing element, the baffle can offset with the plectrum ontology, to prevent
The rotation stop piece is moved to the card slot direction.
8. the fire-preventing check valve as described in one of claim 3 to 5, which is characterized in that the plectrum ontology is equipped with shaft, described
Rotation stop on piece is equipped with the axis hole coordinated with the shaft.
9. fire-preventing check valve as claimed in claim 8, which is characterized in that the plectrum ontology be equipped with the first notch, described turn
The side wall that axis is located at first indentation, there by the plectrum ontology extends outward to form.
10. the fire-preventing check valve as described in one of claim 3 to 5, which is characterized in that the rotation stop on piece is equipped with the second notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147354.2A CN106678400B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-preventing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710147354.2A CN106678400B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-preventing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106678400A CN106678400A (en) | 2017-05-17 |
| CN106678400B true CN106678400B (en) | 2018-09-28 |
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ID=58828747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710147354.2A Active CN106678400B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-preventing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678400B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488445B (en) * | 2018-06-26 | 2023-12-22 | 盐城市百世达建材有限公司 | Fireproof check valve |
| 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 |
| CN110440036A (en) * | 2019-07-19 | 2019-11-12 | 广州市法玉环保科技有限公司 | A kind of fire-preventing check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535376U (en) * | 2009-11-20 | 2010-07-28 | 李永彬 | Fireproof check valve |
| CN202082439U (en) * | 2011-03-25 | 2011-12-21 | 曹正祥 | Oily fume-discharged.fire-prevention check valve |
| CN203309217U (en) * | 2013-05-10 | 2013-11-27 | 盐城雷宇阀业有限公司 | Oil and smoke discharging and fireproof check valve |
| CN104344031A (en) * | 2014-10-26 | 2015-02-11 | 重庆科众机械有限公司 | Fire-proof check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248549A (en) * | 1992-03-06 | 1993-09-24 | Nakakita Seisakusho:Kk | Check valve |
-
2017
- 2017-03-13 CN CN201710147354.2A patent/CN106678400B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535376U (en) * | 2009-11-20 | 2010-07-28 | 李永彬 | Fireproof check valve |
| CN202082439U (en) * | 2011-03-25 | 2011-12-21 | 曹正祥 | Oily fume-discharged.fire-prevention check valve |
| CN203309217U (en) * | 2013-05-10 | 2013-11-27 | 盐城雷宇阀业有限公司 | Oil and smoke discharging and fireproof check valve |
| CN104344031A (en) * | 2014-10-26 | 2015-02-11 | 重庆科众机械有限公司 | Fire-proof check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106678400A (en) | 2017-05-17 |
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