CN110131449A - Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate - Google Patents
Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate Download PDFInfo
- Publication number
- CN110131449A CN110131449A CN201910506626.2A CN201910506626A CN110131449A CN 110131449 A CN110131449 A CN 110131449A CN 201910506626 A CN201910506626 A CN 201910506626A CN 110131449 A CN110131449 A CN 110131449A
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- Prior art keywords
- plate
- door
- guide post
- fire
- indexable
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- 239000002184 metal Substances 0.000 claims abstract description 94
- 229910052751 metal Inorganic materials 0.000 claims abstract description 94
- 230000002265 prevention Effects 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000741 silica gel Substances 0.000 claims abstract description 9
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 53
- 238000005452 bending Methods 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000001739 rebound effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/50—Preventing rotation of valve members
-
- 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
- F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of valve members
- F16K15/036—Dual valve members with hinges crossing the flow line substantially diametrical
-
- 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
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a kind of fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plates, the metal non-return doorframe angularly disposed including metal cylinder and in metal cylinder, openable and closable double opening and closings are symmetrically arranged on the metal non-return doorframe bride visits her parents with her husband for the first time after the wedding plate, is equipped with fire prevention temp-sensing device in metal cylinder, above the symmetry axis of double opening and closings bride visits her parents with her husband for the first time after the wedding plate；Its double opening and closing bride visits her parents with her husband for the first time after the wedding plate includes being symmetrically set in openable and closable metal non-return door-plate in valve body, the metal non-return door-plate includes the upper door-plate and lower door-plate for being mutually permanently connected and striking out respectively cutting edge shape, and withholds and be used for the D-shaped silica gel sealing ring of sealed valve body mouth in upper door-plate and lower door periphery.
Description
Technical field
The present invention relates to check-valves more particularly to a kind of fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plates.
Background technique
The check-valves in line for common flue or exterior wall imitates the unlatching effect of non-return door-plate, fire protecting performance, sealing
More stringent requirements are proposed for fruit etc., and there are many defects for the current check-valves used, for example, non-return door-plate is around connection
Axis rotation, because the contact surface of connecting shaft is larger, is easily stained with greasy dirt, in use often such that non-return door-plate was rotating
Blocked in journey, so that a part can only be opened, cannot it is fully open or cannot complete return, thus affect in the same time
The effect of ventilation effect and anti-non-return cigarette；Though structure is complicated in addition, setting firebreak device, cost of manufacture is high, and is easy to lose
Effect, fire protecting performance are poor；Meanwhile flue taint of odour phenomenon happens occasionally, interior is full of peculiar smell, seriously affects family health.
It would therefore be highly desirable to solve the above problems.
Summary of the invention
Goal of the invention: the first object of the present invention is to provide a kind of double opening and closings bride visits her parents with her husband for the first time after the wedding plate of favorable sealing property.
The second object of the present invention is to provide a kind of fire-preventing check valve based on double opening and closings bride visits her parents with her husband for the first time after the wedding plate.
Technical solution: in order to achieve the above object, the invention discloses a kind of double opening and closings bride visits her parents with her husband for the first time after the wedding plates, including it is symmetrically set in valve body
Interior openable and closable metal non-return door-plate, the metal non-return door-plate include being mutually permanently connected and striking out visiting for cutting edge shape respectively
Plate and lower door-plate, and withhold and be used for the D-shaped silica gel sealing ring of sealed valve body mouth in upper door-plate and lower door periphery.Of the invention
Double opening and closings bride visits her parents with her husband for the first time after the wedding plate is mutually riveted using the upper door-plate for striking out cutting edge shape with lower door-plate or bolted structure type, and upper
Door-plate and lower door periphery withhold the D-shaped silica gel sealing ring for sealed valve body mouth, greatly improve sealing effect.
Wherein, the upper door-plate and lower door-plate are D-shaped metal plate, which includes a straight flange and an arc-shaped edges；
The straight flange both ends position of upper door-plate forms center door-hinge rotating around itself bending, divides on the valve body close to center door-hinge both ends
Not She You hinge, the hinge be equipped with for fixed center door-hinge fixed card buckle, and upper door-plate pass through center door-hinge and valve body
On hinge be connected with fixed card buckle.
The invention discloses a kind of fire-preventing check valve based on double opening and closings bride visits her parents with her husband for the first time after the wedding plate, including metal cylinder and it is located at metal cylinder
Angularly disposed metal non-return doorframe in vivo is symmetrically arranged with openable and closable double opening and closings on the metal non-return doorframe bride visits her parents with her husband for the first time after the wedding plate, in gold
Belong in cylinder, be equipped with temp-sensing device of preventing fires above the symmetry axis of double opening and closings bride visits her parents with her husband for the first time after the wedding plate.
Preferably, described metal cylinder one end is equipped with metal installation base, which is to be welded into metal cylinder
Type structure or integrated formed structure, two sides are symmetrically arranged with consistent for limiting flue reaming ruler with cylinder radian on metal cylinder
Very little arcuate guide piece；The metal non-return doorframe includes being fixed on the round frame of metal cylinder inner wall and being located at round frame symmetry axis
Center doorframe, and the side of round frame and center doorframe is cutting edge shape side.The cutting edge shape side of metal non-return doorframe in the present invention
Sealing effect can be ensured with bride visits her parents with her husband for the first time after the wedding plate effectively the seals cooperation of double opening and closings.
Further, the fire prevention temp-sensing device includes upper end and valve body is fixed, the valve with split valve plates is protruded into lower end
In vivo and the indexable guide post that is located above the symmetry axis of two valve plates, and the spring that is successively sheathed in indexable guide post and
Closure pressing plate, the indexing guide post include the column body and lower prop of mutual torsion certain angle；And in indexable guide post
Bonding the first fuse link and the second fuse link are equipped between end and closure pressing plate, the upper end of the first fuse link and indexing are oriented to
The upper end of column is connected, and the lower end of the second fuse link is connected with closure pressing plate；When external temperature reaches certain temperature, mutually glue
The first fuse link and the second fuse link closed separates, and screen resilience of the closure pressing plate in spring of symmetry axis is parallel under original state
Effect lower edge indexing guide post moves down and reverses certain angle, and closure pressure board keeps valve plate closing real in valve plates
It now prevents fires isolation features.It is designed in the present invention using the mutually column body of torsion certain angle and the structure of lower prop, works as closure
Lower prop change side of the pressing plate during rebound effect lower edge indexing guide post of spring moves down after torsion
To certain angle being formed to symmetry axis by the symmetry axis that is parallel to of original state, using the closure pressure board after torsion in valve
On door-plate, valve plates tight closure is made to realize fire prevention isolation features.
Wherein, the indexable guide post is the cylinder that cross section is rectangle, and column body and lower prop mutually reverse 90 °.This
In invention when column body and lower prop mutually reverse 90 °, lower prop of the closure pressing plate after torsion can equally turn 90 °,
I.e. perpendicular to symmetry axis, can effective clamping valve body, prevent valve plates from opening.
Preferably, the upper end of the indexable guide post is connected by connecting bracket with valve body, which is one horizontal
Bending plate across valve body opening, the bending plate include the first connecting portion fixed with valve body side, for fixed indexable guide post and
First fuse link and the third interconnecting piece for being parallel to the second connecting portion of symmetry axis and being fixed with the valve body other side.
Furthermore the side of the length direction of the connecting bracket is equipped with the flanging for enhancing.
Further, the upper end of the indexable guide post is connected with the locating piece for limiting indexable guide post rotation, this is fixed
Position part is a L-type plate being made of vertical plate and transverse slat, offers the square hole worn for indexable guide post on transverse slat, vertical plate with
Connecting bracket leans.
Preferably, several notches are evenly equipped on the lower prop of the indexable guide post, the closure pressing plate is equipped with can
It fastens the non return part for preventing closure pressing plate from bouncing back upwards with notch.
Furthermore the closure pressing plate is a thin plate, offers the through-hole worn for indexable guide post among the thin plate, thin
Plate length direction both ends downward bending forms bending part；The non return part includes thin plate ontology and uses positioned at thin plate ontology four corners
In offering the through-hole for passing through indexable guide post on the claw of connection closure pressing plate, thin plate ontology, along thin plate body width
The through-hole radially opposite sides in direction are respectively equipped with the one-way clutch being upturned, and the through-hole two sides along thin plate body length direction are set respectively
It is upturned and flexible thin slice, the thin slice front end is equipped with one-way clutch.
Further, the closure pressing plate is a thin plate, offers the through-hole worn for indexable guide post among the thin plate,
Thin plate length direction both ends downward bending forms bending part, and the side downward bending of thin plate length direction forms enhanced portion；It is described
Non return part includes thin plate ontology, the through-hole for passing through indexable guide post is offered on thin plate ontology, along thin plate body length side
To through-hole two sides be respectively equipped with and be upturned and flexible thin slice, which is equipped with one-way clutch.
The utility model has the advantages that compared with prior art, the present invention has following remarkable advantage:
(1), double opening and closings of the invention bride visits her parents with her husband for the first time after the wedding plate is using striking out the structure that the upper door-plate of cutting edge shape is mutually riveted with lower door-plate
Form, and the D-shaped silica gel sealing ring for sealed valve body mouth is withheld in upper door-plate and lower door periphery, it can greatly improve only
Return the sealing performance of valve；
(2), bride visits her parents with her husband for the first time after the wedding that plate is angularly disposed in metal cylinder for double opening and closings of the invention, double opening and closings bride visits her parents with her husband for the first time after the wedding inclined-plane weight that plate generates
Power is conducive to valve closure, and to guarantee check-valves when not in use, two non-return door-plates are in closed state；
(3), it is designed in the present invention using the mutually column body of torsion certain angle and the structure of lower prop, when closure pressing plate
Lower prop during the rebound effect lower edge indexing guide post of spring moves down after torsion changes direction, by
The symmetry axis that is parallel to of original state forms certain angle to symmetry axis, using the closure pressure board after torsion in valve plates
On, so that valve plates tight closure is realized fire prevention isolation features；
(4), in the present invention when column body and lower prop mutually reverse 90 °, lower prop of the closure pressing plate after torsion
90 ° can equally be turned, i.e., perpendicular to symmetry axis, can effective clamping valve body, prevent valve plates from opening；
(5), in the present invention using the one-way clutch being upturned on non return part to the greatest extent can unidirectional slide downward characteristic, work as non-return
Part moves downward together with closure pressing plate, when the one-way clutch of non return part fastens with notch, can effectively prevent hot environment
Closure pressing plate retraction the phenomenon that moving upwards under the lower failure state because of spring force, the effective guarantee spy of fire prevention temp-sensing device
Property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fire-preventing check valve in the embodiment of the present invention 1；
Fig. 2 is the schematic cross-section of fire-preventing check valve in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of fire prevention temp-sensing device in the embodiment of the present invention 1；
Fig. 4 is the structural schematic diagram of indexable guide post in the embodiment of the present invention 1；
Fig. 5 is the structural schematic diagram of non return part in the embodiment of the present invention 1；
Fig. 6 is the structural schematic diagram of double opening and closings bride visits her parents with her husband for the first time after the wedding plate in the embodiment of the present invention 1；
Fig. 7 is the main view of metal non-return door-plate in the embodiment of the present invention 1；
Fig. 8 is the rearview of metal non-return door-plate in the embodiment of the present invention 1；
Fig. 9 is the structural schematic diagram of fire-preventing check valve in the embodiment of the present invention 2；
Figure 10 is the structural schematic diagram of fire prevention temp-sensing device in the embodiment of the present invention 2；
Figure 11 is the structural schematic diagram of connecting bracket in the embodiment of the present invention 2；
Figure 12 is the structural schematic diagram of non return part in the embodiment of the present invention 2；
Figure 13 is the structural schematic diagram of closure pressing plate in the embodiment of the present invention 2.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1 and Figure 2, the invention discloses a kind of fire-preventing check valves, including metal installation base 13 and metal cylinder
11.The metal installation base 13 and metal cylinder 11 are welding fabrication structure or integrated formed structure.Wherein, metal cylinder 11 passes through
Multi-drawing moulding process is all made of high-test metal material in addition to temp-sensing device, and rust-proofing ability is strong, and acid and alkali-resistance is corrosion-resistant, resistance to height
Temperature, it is environmentally protective, it is healthy and safe, large bearing capacity is possessed using streamlined arc chord angle technique, is unlikely to deform.Two on metal cylinder 11
Side be symmetrically arranged with it is consistent for limiting the arcuate guide piece 14 of flue size with cylinder radian, open up flue reaming when
It waits, operator can plan flue size using arcuate guide piece 14, easy to operate.It is angularly disposed in metal cylinder 11 to have metal
Non-return doorframe 12, bride visits her parents with her husband for the first time after the wedding that plate is symmetrically arranged on metal non-return doorframe 12 for double opening and closings.Metal non-return doorframe 12 includes being fixed on metal
The round frame 1201 of cylinder inboard wall and it is located at center doorframe 1202 at round frame symmetry axis, and the side of round frame 1201 and center doorframe 1202
Side is cutting edge shape side, and the cutting edge shape of the cutting edge shape side and double opening and closings bride visits her parents with her husband for the first time after the wedding plate is realized effectively by D-shaped silica gel sealing ring 803
Sealing.Double opening and closings bride visits her parents with her husband for the first time after the wedding plate includes being symmetrically set in openable and closable metal non-return door-plate 8 in valve body, which includes
The periphery of upper door-plate 801 and lower door-plate 802, upper door-plate 801 and lower door-plate 802 is stamped into cutting edge shape, and upper door-plate 801 is under
Door-plate 802 is mutually permanently connected by rivet or bolt.It has withheld in upper door-plate 801 and lower 802 periphery of door-plate for sealing valve
The D-shaped silica gel sealing ring 803 of body mouth.Upper door-plate 801 and lower door-plate 802 are D-shaped metal plate, which includes always
Side and an arc-shaped edges.The straight flange both ends position of upper door-plate 801 forms center door-hinge 804, upper door-plate 801 rotating around itself bending
Lower door-plate is driven to rotate around the center door-hinge 804 that itself bending is formed.It is set respectively on the valve body close to 804 both ends of center door-hinge
There is hinge 9, which is equipped with the fixed card buckle 10 for fixed center door-hinge 804, and upper door-plate 801 passes through center door-hinge
804 on valve body hinge 9 and fixed card buckle 10 be connected.The central door that the metal non-return door-plate 8 is formed by itself bending
Axis realizes flexible rotation, reduces the influence of greasy dirt or dust to rotation flexibility ratio in use process, ingenious in design, can beat completely
It is open and close, improve ventilation effect.
Fire prevention temp-sensing device is equipped in metal cylinder 2, above the symmetry axis of double opening and closings bride visits her parents with her husband for the first time after the wedding plate.Wherein, it prevents fires
The position of temp-sensing device is placed in the middle, and does not influence the activity of metal non-return door-plate 8.Meanwhile the cylinder height of the metal cylinder 11 can be complete
The full metal non-return door-plate 8 accommodated under opening state, protection fire prevention temp-sensing device are not destroyed and enhance its reliability of preventing fires, together
When avoid strong wind in or beyond flue at wall and foreign matter from hindering the unlatching of metal non-return door-plate, further ensure fire-preventing check valve and
The reliability of its temp-sensing device of preventing fires.
Temp-sensing device of preventing fires include indexable guide post 1, spring 2, closure pressing plate 3, the first fuse link 4, the second fuse link 5,
Connecting bracket 6 and non return part 7.Connecting bracket 6 be one across valve body opening bending plate, which includes and metal installation base 13
The fixed first connecting portion 601 in side for fixed indexable guide post 1 and the first fuse link 4 and is parallel to the second of symmetry axis
Interconnecting piece 602 and the third interconnecting piece 603 fixed with 13 other side of metal installation base.The upper end of indexable guide post 1 passes through spiral shell
Bolt and 602 phase of second connecting portion of connecting bracket 6 are fixed, and the gold with double opening and closings bride visits her parents with her husband for the first time after the wedding plate is protruded into the lower end of indexable guide post 1
Belong in cylinder 11 and is located above the symmetry axis of two door-plates.Spring 2 and closure pressing plate 3 are successively arranged in indexable guide post 1.Turn
Position guide post 1 includes the column body 101 and lower prop 102 of mutually torsion certain angle, and it is rectangle that indexable guide post 1, which is cross section,
Cylinder, mutually 90 ° of the torsion of column body 101 and lower prop 102.It is evenly equipped on the lower prop 102 of indexable guide post 1 of the invention
Several notches 103, closure pressing plate 3 are equipped with the non-return that can be fastened with notch 103 for preventing closure pressing plate 3 from bouncing back upwards
Part 7.Closure pressing plate 3 is a thin plate, offers the through-hole 301 worn for indexable guide post 1, thin plate length side among the thin plate
Bending part 302 is formed to both ends downward bending；Non return part 7 includes thin plate ontology 701 and is used to connect positioned at thin plate ontology four corners
The claw 702 of closure pressing plate 3 is connect, the through-hole 703 for passing through indexable guide post 1 is offered on thin plate ontology 7, along thin plate ontology
703 radially opposite sides of through-hole of 701 width directions are respectively equipped with the one-way clutch 704 being upturned, along 701 length direction of thin plate ontology
703 two sides of through-hole be respectively equipped with and be upturned and flexible thin slice 705, the thin slice 705 are cut from thin plate ontology 701
It cuts out, which is equipped with one-way clutch 704.Because one-way clutch 704 of the invention is upturned, i.e., its only along turn
Position 1 slide downward of guide post, can not move upwards.
The upper end of first fuse link 4 and the upper end of the second connecting portion 602 of connecting bracket 6 and indexable guide post 1 are mutually fixed,
The upper end outer wall of indexable guide post, which is offered, forms stud for the external screw thread of connection, offers and is used in second connecting portion 602
The through-hole of stud is worn, the upper end bending of the first fuse link can be bonded the connection sheet of second connecting portion 602, same in the connection sheet
The through-hole for wearing stud is offered, stud sequentially passes through the connection sheet of second connecting portion 602 and the first fuse link, and passes through
Gasket is fixedly connected with nut.The lower end of first fuse link 4 passes through the scolding tin phase of 150 DEG C of fusing points with the upper end of the second fuse link 5
Bonding, the lower end of second fuse link 5 is connected with closure pressing plate 3, wherein the lower end of the second fuse link 5 opens up hole, closure pressure
Plate stretches out a link block, which, which inserts in the hole, realizes locking.
The original of spring 2 is longer, and the compacting of closure pressing plate 3 spring 2 makes spring 2 be in compressive state under normal condition, and
The symmetry axis with double opening and closings bride visits her parents with her husband for the first time after the wedding plate in parallel of closure pressing plate 3.When external temperature reaches fusing-off temperature, the first bonding fusing
Piece 4 and the second fuse link 5 separation, closure pressing plate 3 together with non return part 7 spring 2 screen resilience as lower edge indexing guide post 1 to
Lower movement is simultaneously rotated by 90 °, and closure pressing plate 3 is firmly stuck in double opening and closings bride visits her parents with her husband for the first time after the wedding on plate, makes double opening and closings bride visits her parents with her husband for the first time after the wedding that plate closing realizes anti-fire screen
From function.Fuse link herein uses copper sheet or steel disc, and normal melting point temperature control meets NFA department Recognized Standards, acts
Fuse link disconnects when temperature reaches fusing-off temperature, and temperature control is accurate, is quick on the draw.Simultaneously when non return part 7 with closure pressing plate 3 together
It moves downward, when the one-way clutch 704 of non return part 7 fastens with notch 103, can effectively prevent under hot environment because of 2 bullet of spring
The retraction of closure pressing plate 3 the phenomenon that moving upwards under power failure state, the effective guarantee characteristic of fire prevention temp-sensing device.
The plane and vertical direction of metal non-return door-plate 8 have 25-40 ° of angle, to guarantee fire-preventing check valve and its fire prevention
Temp-sensing device when not in use, prevent as a result, since the effect of gravity leans against on metal non-return doorframe 12 by two metal non-return door-plates 8
Fiery check-valves is in close state.Connection U-type groove or waist-shaped hole are opened up in metal installation base 13, will pass through installation setscrew
Check-valves is fixedly mounted or check-valves is fixedly mounted by other means.
Embodiment 2
As shown in figure 9, the invention discloses a kind of fire-preventing check valve, including metal installation base 13 and metal cylinder 11.It should
Metal installation base 13 and metal cylinder 11 are welding fabrication structure or integrated formed structure.Wherein, metal cylinder 11 is by multiple
Stretch forming process is all made of high-test metal material in addition to temp-sensing device, and rust-proofing ability is strong, and acid and alkali-resistance is corrosion-resistant, high temperature resistant,
It is environmentally protective, it is healthy and safe, large bearing capacity is possessed using streamlined arc chord angle technique, is unlikely to deform.Two sides on metal cylinder 11
Be symmetrically arranged with it is consistent for limiting the arcuate guide piece 14 of flue size with cylinder radian, when opening up flue reaming,
Operator can plan flue size using arcuate guide piece 14, easy to operate.It is angularly disposed in metal cylinder 11 to there is metal to stop
Bride visits her parents with her husband for the first time after the wedding frame 12, bride visits her parents with her husband for the first time after the wedding that plate is symmetrically arranged on metal non-return doorframe 12 for double opening and closings.Metal non-return doorframe 12 includes being fixed on metal cylinder
The round frame 1201 of internal wall and it is located at center doorframe 1202 at round frame symmetry axis, and the side of round frame 1201 and center doorframe 1202
For cutting edge shape side, the cutting edge shape of the cutting edge shape side and double opening and closings bride visits her parents with her husband for the first time after the wedding plate is realized effectively close by D-shaped silica gel sealing ring 803
Envelope.Double opening and closings bride visits her parents with her husband for the first time after the wedding plate includes being symmetrically set in openable and closable metal non-return door-plate 8 in valve body, which includes upper
The periphery of door-plate 801 and lower door-plate 802, upper door-plate 801 and lower door-plate 802 is stamped into cutting edge shape, upper door-plate 801 and Xiamen
Plate 802 is mutually permanently connected by rivet or bolt.It has withheld in upper door-plate 801 and lower 802 periphery of door-plate for sealed valve body
The D-shaped silica gel sealing ring 803 of mouth.Upper door-plate 801 and lower door-plate 802 are D-shaped metal plate, which includes a straight flange
With an arc-shaped edges.The straight flange both ends position of upper door-plate 801 forms center door-hinge 804, upper 801 band of door-plate rotating around itself bending
Dynamic lower door-plate is rotated around the center door-hinge 804 that itself bending is formed.It is respectively equipped on the valve body close to 804 both ends of center door-hinge
Hinge 9, which is equipped with the fixed card buckle 10 for fixed center door-hinge 804, and upper door-plate 801 passes through center door-hinge 804
With on valve body hinge 9 and fixed card buckle 10 be connected.The metal non-return door-plate 8 is real by the center door-hinge that itself bending is formed
Now flexible rotation reduces the influence of greasy dirt or dust to rotation flexibility ratio in use process, ingenious in design, can fully open and
It closes, improves ventilation effect.
Fire prevention temp-sensing device is equipped in metal cylinder 2, above the symmetry axis of double opening and closings bride visits her parents with her husband for the first time after the wedding plate.Wherein, it prevents fires
The position of temp-sensing device is placed in the middle, and does not influence the activity of metal non-return door-plate 8.Meanwhile the cylinder height of the metal cylinder 11 can be complete
The full metal non-return door-plate 8 accommodated under opening state, protection fire prevention temp-sensing device are not destroyed and enhance its reliability of preventing fires, together
When avoid strong wind in or beyond flue at wall and foreign matter from hindering the unlatching of metal non-return door-plate, further ensure fire-preventing check valve and
The reliability of its temp-sensing device of preventing fires.
As shown in Figure 10, fire prevention temp-sensing device includes indexable guide post 1, spring 2, closure pressing plate 3, the first fuse link 4, the
Two fuse links 5, connecting bracket 6, non return part 7 and locating piece 15.As shown in figure 11, connecting bracket 6 be one across valve body opening folding
Bent plate, the bending plate include the first connecting portion 601 fixed with 13 side of metal installation base, for fixed indexable guide post 1 and
It first fuse link 4 and is parallel to the second connecting portion 602 of symmetry axis and connects with the fixed third in 13 other side of metal installation base
Socket part 603, the side of the length direction of connecting bracket 6 are equipped with the flanging 604 for enhancing.The upper end of indexable guide post 1 passes through
Bolt and 602 phase of second connecting portion of connecting bracket 6 are fixed, and the lower end of indexable guide post 1 is protruded into double opening and closings bride visits her parents with her husband for the first time after the wedding plate
In metal cylinder 11 and it is located above the symmetry axis of two door-plates.The upper end of indexable guide post 1 is connected with for limiting indexable guiding
The locating piece 15 that column 1 rotates, the locating piece 15 are a L-type plate being made of vertical plate and transverse slat, are offered on transverse slat for indexing
The side of the square hole that guide post 1 is worn, the flanging 604 of the one side and connecting bracket 6 of vertical plate leans.
Spring 2 and closure pressing plate 3 are successively arranged in indexable guide post 1.Indexable guide post 1 includes mutually reversing certain angle
The column body 101 and lower prop 102 of degree, indexable guide post 1 are the cylinder that cross section is rectangle, column body 101 and lower prop 102
Mutually 90 ° of torsion.It is evenly equipped with several notches 103 on the lower prop 102 of indexable guide post 1 of the invention, is set on closure pressing plate 3
There is the non return part 7 that can be fastened with notch 103 for preventing closure pressing plate 3 from bouncing back upwards.As shown in figure 13, closure pressing plate 3 is
One thin plate offers the through-hole 301 worn for indexable guide post 1, thin plate length direction both ends downward bending among the thin plate
Bending part 302 is formed, the side downward bending of thin plate length direction forms enhanced portion 303.As shown in figure 12, non return part 7 includes
Thin plate ontology 701 offers the through-hole 703 for passing through indexable guide post 1 on thin plate ontology 7, along 701 length side of thin plate ontology
To 703 two sides of through-hole be respectively equipped with and be upturned and flexible thin slice 705, which is equipped with one-way clutch
704.Because one-way clutch 704 of the invention is upturned, i.e., it can not be moved upwards only along indexable 1 slide downward of guide post.
The upper end of first fuse link 4 and the upper end of the second connecting portion 602 of connecting bracket 6 and indexable guide post 1 are mutually fixed,
The upper end outer wall of indexable guide post, which is offered, forms stud for the external screw thread of connection, offers and is used in second connecting portion 602
The through-hole of stud is worn, the upper end bending of the first fuse link can be bonded the connection sheet of second connecting portion 602, same in the connection sheet
The through-hole for wearing stud is offered, stud sequentially passes through the connection sheet of second connecting portion 602 and the first fuse link, and passes through
Gasket is fixedly connected with nut.The lower end of first fuse link 4 passes through the scolding tin phase of 150 DEG C of fusing points with the upper end of the second fuse link 5
Bonding, the lower end of second fuse link 5 is connected with closure pressing plate 3, wherein the lower end of the second fuse link 5 opens up hole, closure pressure
Plate stretches out a link block, which, which inserts in the hole, realizes locking.
The original of spring 2 is longer, and the compacting of closure pressing plate 3 spring 2 makes spring 2 be in compressive state under normal condition, and
The symmetry axis with double opening and closings bride visits her parents with her husband for the first time after the wedding plate in parallel of closure pressing plate 3.When external temperature reaches fusing-off temperature, the first bonding fusing
Piece 4 and the second fuse link 5 separation, closure pressing plate 3 together with non return part 7 spring 2 screen resilience as lower edge indexing guide post 1 to
Lower movement is simultaneously rotated by 90 °, and closure pressing plate 3 is firmly stuck in double opening and closings bride visits her parents with her husband for the first time after the wedding on plate, makes double opening and closings bride visits her parents with her husband for the first time after the wedding that plate closing realizes anti-fire screen
From function.Fuse link herein uses copper sheet or steel disc, and normal melting point temperature control meets NFA department Recognized Standards, acts
Fuse link disconnects when temperature reaches fusing-off temperature, and temperature control is accurate, is quick on the draw.Simultaneously when non return part 7 with closure pressing plate 3 together
It moves downward, when the one-way clutch 704 of non return part 7 fastens with notch 103, can effectively prevent under hot environment because of 2 bullet of spring
The retraction of closure pressing plate 3 the phenomenon that moving upwards under power failure state, the effective guarantee characteristic of fire prevention temp-sensing device.
The plane and vertical direction of metal non-return door-plate 8 have 25-40 ° of angle, to guarantee fire-preventing check valve and its fire prevention
Temp-sensing device when not in use, prevent as a result, since the effect of gravity leans against on metal non-return doorframe 12 by two metal non-return door-plates 8
Fiery check-valves is in close state.Connection U-type groove or waist-shaped hole are opened up in metal installation base 13, will pass through installation setscrew
Check-valves is fixedly mounted or check-valves is fixedly mounted by other means.
Fire-preventing check valve: being installed on metope by the course of work first, and adjusts its installation site.When fire-preventing check valve is opened
Qi Shi, two panels metal non-return door-plate laterally go up fully open discharge exhaust gas；When fire-preventing check valve is closed, metal non-return door-plate is leaned on
Self gravity is obliquely fallen after rise on metal non-return doorframe；When the temperature is excessively high, fuse link disconnects in flue, spring drives closure
Pressing plate is moved down and is rotated by 90 ° along indexable guide post, and closure pressing plate is firmly stuck on metal non-return door-plate and is locked by non return part
Firmly, metal non-return door-plate is firmly closed, to avoid fire spread.
Product purpose: can use in common flue: fire-preventing check valve and its fire prevention temp-sensing device are public for house kitchen
Flue mist extractor prevents back cigarette, fire prevention system, and fume exhauster for kitchen air draft, common flue fire prevention are usually in " normally closed " state,
Bring peculiar smell in common flue is prevented, prevents to alter taste, takees good care of family health；Fire-preventing check valve and its anti-when range hood works
Fiery temp-sensing device door-plate is opened greatly, and " unlatching " state is in, and heavy caliber is discharged fume unblocked, when air themperature reaches fusing-off temperature,
Fuse link is acted and is automatically closed in fire-preventing check valve and its fire prevention temp-sensing device, prevents external fire infringement.It also can be in exterior wall
Use: fire-preventing check valve and its fire prevention temp-sensing device are in line for exterior wall, can effectively prevent toy, birds and sand and dust etc. into
Enter range hood.
Claims (12)
1. a kind of double opening and closings bride visits her parents with her husband for the first time after the wedding plate, it is characterised in that: including being symmetrically set in openable and closable metal non-return door-plate (8) in valve body,
The metal non-return door-plate (8) includes the upper door-plate (801) and lower door-plate for being mutually permanently connected and striking out respectively cutting edge shape
(802), it and withholds and is used for the D-shaped silica gel sealing ring of sealed valve body mouth on upper door-plate (801) and lower door-plate (802) periphery
(803)。
2. double opening and closings according to claim 1 bride visits her parents with her husband for the first time after the wedding plate, it is characterised in that: the upper door-plate (801) and lower door-plate (802)
It is D-shaped metal plate, which includes a straight flange and an arc-shaped edges；Distinguish the straight flange both ends position of upper door-plate (801)
Center door-hinge (804) are formed around itself bending, are respectively equipped with hinge (9) on the valve body close to center door-hinge (804) both ends, it should
Hinge (9) be equipped with for fixed center door-hinge (804) fixed card buckle (10), and upper door-plate (801) by center door-hinge with
Hinge on valve body is connected with fixed card buckle (10).
3. a kind of fire-preventing check valve based on any double opening and closings of claim 1~2 bride visits her parents with her husband for the first time after the wedding plate, it is characterised in that: including
Metal cylinder (11) and angularly disposed metal non-return doorframe (12) in metal cylinder, the metal non-return doorframe (12) on pair
Claim to be equipped with openable and closable double opening and closings bride visits her parents with her husband for the first time after the wedding plate, in metal cylinder (2), is equipped with and prevents above the symmetry axis of double opening and closings bride visits her parents with her husband for the first time after the wedding plate
Fiery temp-sensing device.
4. fire-preventing check valve according to claim 3, it is characterised in that: pacify equipped with metal described metal cylinder (11) one end
It fills seat (13), the metal installation base (13) and metal cylinder (11) are welding fabrication structure or integrated formed structure, metal cylinder
(11) two sides are symmetrically arranged with consistent for limiting the arcuate guide piece (14) of flue reaming size with cylinder radian on；The gold
Belonging to non-return doorframe (12) includes being fixed on the round frame (1201) of metal cylinder inner wall and positioned at center doorframe at round frame symmetry axis
(1202), and the side of round frame (1201) and center doorframe (1202) is cutting edge shape side.
5. fire-preventing check valve according to claim 3, it is characterised in that: the fire prevention temp-sensing device includes upper end and valve body
The indexable guide post (1) in the valve body with split valve plates and being located above the symmetry axis of two valve plates is protruded into fixed, lower end,
And it is successively sheathed on spring (2) and closure pressing plate (3) on indexable guide post (1), the indexing guide post (1) includes mutual
Reverse the column body (101) and lower prop (102) of certain angle；And between indexable guide post (1) upper end and closure pressing plate (3)
Equipped with bonding the first fuse link (4) and the second fuse link (5), the upper end of the first fuse link (4) and indexable guide post (1)
Upper end is connected, and the lower end of the second fuse link (5) is connected with closure pressing plate (3)；When external temperature reaches certain temperature, phase
The first fuse link (4) and the second fuse link (5) of bonding separate, and the closure pressing plate (3) that symmetry axis is parallel under original state exists
The rebound effect lower edge indexing guide post (1) of spring (2) moves down and reverses certain angle, and closure pressing plate (3) is stuck in valve
On door-plate, valve plate closing is made to realize fire prevention isolation features.
6. fire-preventing check valve according to claim 5, it is characterised in that: it is square that the indexing guide post (1), which is cross section,
Mutually 90 ° of the torsion of the cylinder of shape, column body (101) and lower prop (102).
7. fire-preventing check valve according to claim 5, it is characterised in that: the upper end of the indexing guide post (1) passes through company
Bracket (6) is connect to be connected with valve body, the connecting bracket (6) be one across valve body opening bending plate, which includes and valve body
The fixed first connecting portion (601) in side is used for fixed indexable guide post (1) and the first fuse link (4) and is parallel to symmetry axis
Second connecting portion (602) and the third interconnecting piece (603) fixed with the valve body other side.
8. fire-preventing check valve according to claim 7, it is characterised in that: the side of the length direction of the connecting bracket (6)
Side is equipped with the flanging (604) for enhancing.
9. fire-preventing check valve according to claim 5, it is characterised in that: the upper end of the indexing guide post (1) is connected with
For limiting the locating piece (15) of indexable guide post (1) rotation, which is a L-type being made of vertical plate and transverse slat
Plate offers the square hole worn for indexable guide post (1) on transverse slat, and vertical plate leans with connecting bracket (6).
10. fire-preventing check valve according to claim 5, it is characterised in that: the lower prop of the indexing guide post (1)
(102) several notches (103) are evenly equipped on, the closure pressing plate (3) is equipped with and can fasten with notch (103) for preventing
The non return part (7) that closure pressing plate (3) bounces back upwards.
11. fire-preventing check valve according to claim 10, it is characterised in that: the closure pressing plate (3) is a thin plate, this is thin
The through-hole (301) worn for indexable guide post (1) is offered among plate, thin plate length direction both ends downward bending forms bending
Portion (302)；The non return part (7) includes thin plate ontology (701) and is used to connect closure pressing plate (3) positioned at thin plate ontology four corners
Claw (702), offer for the through-hole (703) across indexable guide post (1), along thin plate ontology on thin plate ontology (7)
(701) through-hole (703) radially opposite sides of width direction are respectively equipped with the one-way clutch (704) being upturned, along thin plate ontology (701)
Through-hole (703) two sides of length direction, which are respectively equipped with, to be upturned and flexible thin slice (705), thin slice (705) front end
Equipped with one-way clutch (704).
12. fire-preventing check valve according to claim 10, it is characterised in that: the closure pressing plate (3) is a thin plate, this is thin
The through-hole (301) worn for indexable guide post (1) is offered among plate, thin plate length direction both ends downward bending forms bending
The side downward bending in portion (302), thin plate length direction forms enhanced portion (303)；The non return part (7) includes thin plate ontology
(701), it is offered on thin plate ontology (7) for the through-hole (703) across indexable guide post (1), along thin plate ontology (701) length
Through-hole (703) two sides in direction, which are respectively equipped with, to be upturned and flexible thin slice (705), thin slice (705) front end are equipped with
One-way clutch (704).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506626.2A CN110131449A (en) | 2019-06-12 | 2019-06-12 | Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910506626.2A CN110131449A (en) | 2019-06-12 | 2019-06-12 | Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110131449A true CN110131449A (en) | 2019-08-16 |
Family
ID=67581190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910506626.2A Pending CN110131449A (en) | 2019-06-12 | 2019-06-12 | Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454598A (en) * | 2019-08-21 | 2019-11-15 | 李永彬 | High closed, flow-guiding type oil-smoke-exhausting fireproof check valve |
| CN110715080A (en) * | 2019-10-30 | 2020-01-21 | 盛玉平 | Single spring fireproof check valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8502274D0 (en) * | 1984-05-12 | 1985-05-08 | Gestra Ag | CHECK VALVE |
| JP2003222254A (en) * | 2002-01-25 | 2003-08-08 | Amano Corp | Check valve |
| CN201535376U (en) * | 2009-11-20 | 2010-07-28 | 李永彬 | Fireproof check valve |
| CN201610961U (en) * | 2010-02-04 | 2010-10-20 | 闫斐 | Variable-pressure type oil-smoke exhausting fireproof check valve |
| CN203453554U (en) * | 2013-08-29 | 2014-02-26 | 周建达 | Fireproof check valve of exhaust pipe opening of range hood |
| CN205639757U (en) * | 2016-05-09 | 2016-10-12 | 南京协威机械有限公司 | Fireproof check valve |
| CN107830213A (en) * | 2017-10-13 | 2018-03-23 | 杭州老板电器股份有限公司 | A kind of fire-preventing check valve |
| CN207421408U (en) * | 2017-04-11 | 2018-05-29 | 天津市盛亿德阀门有限公司 | A kind of Double-clack damping check valve |
| CN108087595A (en) * | 2018-01-26 | 2018-05-29 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN210318661U (en) * | 2019-06-12 | 2020-04-14 | 南京协威机械有限公司 | Fireproof check valve and double-opening check door plate thereof |
-
2019
- 2019-06-12 CN CN201910506626.2A patent/CN110131449A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8502274D0 (en) * | 1984-05-12 | 1985-05-08 | Gestra Ag | CHECK VALVE |
| JP2003222254A (en) * | 2002-01-25 | 2003-08-08 | Amano Corp | Check valve |
| CN201535376U (en) * | 2009-11-20 | 2010-07-28 | 李永彬 | Fireproof check valve |
| CN201610961U (en) * | 2010-02-04 | 2010-10-20 | 闫斐 | Variable-pressure type oil-smoke exhausting fireproof check valve |
| CN203453554U (en) * | 2013-08-29 | 2014-02-26 | 周建达 | Fireproof check valve of exhaust pipe opening of range hood |
| CN205639757U (en) * | 2016-05-09 | 2016-10-12 | 南京协威机械有限公司 | Fireproof check valve |
| CN207421408U (en) * | 2017-04-11 | 2018-05-29 | 天津市盛亿德阀门有限公司 | A kind of Double-clack damping check valve |
| CN107830213A (en) * | 2017-10-13 | 2018-03-23 | 杭州老板电器股份有限公司 | A kind of fire-preventing check valve |
| CN108087595A (en) * | 2018-01-26 | 2018-05-29 | 杭州老板电器股份有限公司 | Check-valves and central cooking fume control equipment |
| CN210318661U (en) * | 2019-06-12 | 2020-04-14 | 南京协威机械有限公司 | Fireproof check valve and double-opening check door plate thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454598A (en) * | 2019-08-21 | 2019-11-15 | 李永彬 | High closed, flow-guiding type oil-smoke-exhausting fireproof check valve |
| CN110715080A (en) * | 2019-10-30 | 2020-01-21 | 盛玉平 | Single spring fireproof check valve |
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