CN114738497A - Flow and direction regulating valve - Google Patents

Flow and direction regulating valve Download PDF

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Publication number
CN114738497A
CN114738497A CN202210164121.4A CN202210164121A CN114738497A CN 114738497 A CN114738497 A CN 114738497A CN 202210164121 A CN202210164121 A CN 202210164121A CN 114738497 A CN114738497 A CN 114738497A
Authority
CN
China
Prior art keywords
valve
valve body
flow
blade
body frame
Prior art date
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.)
Pending
Application number
CN202210164121.4A
Other languages
Chinese (zh)
Inventor
周益斌
冯天卿
郑浩
王丹
郭海峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhihe Environment Technology Jiangsu Co ltd
Original Assignee
Zhihe Environment Technology Jiangsu Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhihe Environment Technology Jiangsu Co ltd filed Critical Zhihe Environment Technology Jiangsu Co ltd
Publication of CN114738497A publication Critical patent/CN114738497A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • F16K1/226—Shaping or arrangements of the sealing
    • 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
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a flow and direction regulating valve, which comprises a valve body, wherein the valve body comprises a valve body frame, at least one partition plate and a sealing gasket, the partition plate divides the valve body frame into a plurality of valve cavities with the same size, and the sealing gasket is covered on the valve cavities; the blade assemblies are the same as the valve cavities in number and comprise keel frames, valve rods, blades and elastic metal sealing strips, the elastic metal sealing strips are coated on the edges of the blades, the blades are connected to the keel frames, the valve rods are fixedly connected in the keel frames, and two ends of the valve rods sequentially extend out of the keel frames and the valve body frames; and the driving assembly is connected with the valve rod and is used for driving the blade assembly to synchronously rotate so as to open and close the valve cavity, and when the valve cavity is in a closed state, the elastic metal sealing strip is extruded and abutted against the sealing pad. The invention solves the technical problem of how to effectively improve the sealing performance of the flow regulating valve, and has the advantages of long service life, low maintenance cost, good sealing performance and the like.

Description

Flow and direction regulating valve
Technical Field
The invention relates to the technical field of valves, in particular to a flow and direction regulating valve.
Background
The flow and direction regulating valve is one kind of valve commonly used in sewage draining pipeline system. Current accent flow governing valve all adopts the mode realization of blade overlap joint on the blend stop on the internal perisporium of valve body airtight, it is obvious, in order to guarantee that the blade can normally rotate, leave the clearance between the internal perisporium of blade and valve body, and the striking mutually can take place for blade and blend stop when lapped airtight mode makes at every turn to close, in addition only bear the rivers impact force by lamellar blade when closing again, the event makes the blade take place to warp easily, thereby not only lead to the life of blade short, and it is poor to lead to the seal moreover.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is how to effectively improve the sealing performance of the flow regulating valve.
In order to solve the above technical problem, the present invention provides a flow and direction regulating valve, comprising: the valve body comprises a valve body frame, at least one partition plate and a sealing gasket, wherein the partition plate divides the valve body frame into a plurality of valve cavities with the same size, and the sealing gasket is covered on the valve cavities;
the valve body comprises a valve cavity, a plurality of blade assemblies, a plurality of valve cavities and a plurality of valve rods, wherein the number of the blade assemblies is the same as that of the valve cavities, each blade assembly comprises a keel frame, a valve rod, a blade and an elastic metal sealing strip, the elastic metal sealing strips are coated on the edge of the corresponding blade, the blades are connected to the keel frames, the valve rods are fixedly connected in the keel frames, and two ends of the valve rods respectively extend out of the keel frames and the valve body frames in sequence;
the driving assembly is connected with the valve rod and used for driving the blade assembly to synchronously rotate so as to open and close the valve cavity, and when the valve cavity is in a closed state, the elastic metal sealing strip is extruded and abutted against the sealing pad.
In one embodiment of the invention, the number of the blades is 2, and the blades are symmetrically connected to the opposite surfaces of the keel frame.
In one embodiment of the present invention, the driving assembly includes an actuator and a crank arm link, the crank arm link is connected to the valve rod, and the actuator frame is connected to the valve body frame and connected to an extended end of any one of the valve rods.
In one embodiment of the invention, the actuator is a wheel-worm manual actuator.
In one embodiment of the invention, the valve body frame is welded with a shaft sleeve at the extending part of the valve rod, and a sealing ring is arranged between the shaft sleeve and the corresponding valve rod.
In one embodiment of the invention, the seal ring is a V-shaped seal ring.
In one embodiment of the invention, the keel frame is coated with a sealing rubber pad.
In an embodiment of the present invention, a pair of bearing seats corresponding to the valve rod is further disposed on an outer wall of the valve body frame.
In one embodiment of the invention, the valve body frame is formed by sequentially clamping four rectangular valve plates.
In one embodiment of the invention, two ends of the valve body frame are respectively provided with matched flanges.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. according to the invention, the valve body is arranged to be composed of a plurality of valve cavities, and the blade assembly of the keel structure for opening and closing the corresponding valve cavity is arranged in each valve cavity, so that the deformation resistance strength of the blade assembly is high, the water flow impact force is decomposed, and the blade assembly is shared by the plurality of blade assemblies, thereby greatly prolonging the service life and reducing the maintenance cost.
2. According to the invention, the sealing pad is coated on the inner wall of the valve cavity, and the elastic metal sealing strip is coated on the edge of the blade, so that the elastic metal sealing strip is extruded and tightly propped against the sealing pad when the valve is closed, and the sealing mode is changed from lap joint to extrusion, therefore, the impact on the blade assembly when the valve is closed is small, the service life is prolonged, the maintenance cost is reduced, and the sealing property is greatly improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of an explosive structure of the present invention;
FIG. 3 is an exploded view of the blade assembly of the present invention;
the specification reference numbers indicate: 1. the valve comprises a valve body 11, a valve body frame 12, a partition plate 13, a sealing gasket 14, a valve cavity 2, a blade assembly 21, a keel frame 22, a valve rod 23, a blade 24, an elastic metal sealing strip 3, a driving assembly 31, an actuator 32 and a crank arm connecting rod.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the invention, and moreover, like reference numerals designate like elements throughout the embodiments.
Example 1:
referring to fig. 1, 2 and 3, the flow and direction regulating valve comprises a valve body 1, wherein the valve body 1 comprises a valve body frame 11, at least one partition plate 12 and a sealing gasket 13, the partition plate 12 divides the valve body frame 11 into a plurality of valve cavities 14 with the same size, and the sealing gasket 13 covers the valve cavities 14. Through the arrangement of dividing the valve body 1 into a plurality of valve cavities 14 with the same size, the impact force of water flow can be decomposed, so that the service life of the valve is prolonged, and the maintenance cost is reduced.
A plurality of blade subassembly 2, the quantity of blade subassembly 2 with the quantity of valve pocket 14 is the same, blade subassembly 2 includes keel frame 21, valve rod 22, blade 23 and elastic metal sealing strip 24, elastic metal sealing strip 24 corresponds the cladding in the edge of blade 23, blade 23 is connected on keel frame 21's the opposite face, valve rod 22 links firmly in keel frame 21, and its both ends stretch out in proper order respectively keel frame 21 with valve body frame 11. By arranging the blade assembly 2 for opening and closing the valve cavity 14 to be of a keel structure, the deformation resistance strength is high, the service life is prolonged, the maintenance cost is reduced, and the sealing performance is greatly improved.
The driving assembly 3 is connected with the valve rod 22 and used for driving the blade assembly 2 to rotate synchronously to open and close the valve cavity 14, and when the valve cavity 14 is in a closed state, the elastic metal sealing strip 24 is extruded and tightly abutted to the sealing gasket 13. Set up like this and make airtight mode change to the extrusion from the overlap joint to not only make the impact that blade subassembly 2 received when closing little, improved life, and reduced the maintenance cost, make moreover that the leakproofness can improve greatly.
Example 2:
referring to fig. 1, 2 and 3, the flow and direction regulating valve comprises a valve body 1, wherein the valve body 1 comprises a valve body frame 11, at least one partition plate 12 and a sealing gasket 13, and in the present example, the number of the partition plates 12 is one. The partition plate 12 is connected to the middle of the inner peripheral wall of the valve body frame 11 and divides the valve body frame 11 into valve cavities 14 with the same size, and the sealing gasket 13 is covered on the valve cavities 14. Through the arrangement of dividing the valve body 1 into two valve cavities 14 with the same size, the impact force of water flow can be decomposed, so that the service life of the valve is prolonged, and the maintenance cost is reduced. Specifically, valve body frame 11 is formed by four rectangular valve plates block in proper order, sets up like this and makes when valve body frame 11 damages, can change valve body frame 11's part to not only improve the utilization ratio of resource, reduced cost of maintenance moreover. The two ends of the valve body frame 11 are respectively provided with matched flanges, so that the convenience and the assembly efficiency of assembly are improved. The flange and the valve body frame can be in a welded connection mode, the flange and the valve body frame can also be integrally formed, and the strength of the valve body frame 11 is improved due to the integrally formed arrangement.
A plurality of blade assemblies 2, the number of the blade assemblies 2 is the same as that of the valve cavities 14, and in the embodiment, the number of the blade assemblies 2 is two. Blade subassembly 2 includes keel frame 21, valve rod 22, a pair of blade 23 and two elastic metal sealing strips 24, elastic metal sealing strip 24 corresponds the cladding in the edge of blade 23, it is a pair of blade 23 symmetric connection is in on keel frame 21's the opposite face, valve rod 22 links firmly in keel frame 21 is interior, and its both ends stretch out in proper order respectively keel frame 21 with valve body frame 11. By setting the blade assembly 2 for opening and closing the valve cavity 14 to be a double-layer blade keel structure, not only the deformation resistance strength is high, but also the contact area between the blade assembly 2 and the valve body 1 is increased when the valve is closed, so that the service life is further prolonged, the maintenance cost is reduced, and the sealing performance is further improved.
The driving assembly 3 is connected with the valve rod 22 and is used for driving the blade assembly 2 to synchronously rotate so as to open and close the valve cavity 14, when the valve cavity 14 is in a closed state, the elastic metal sealing strip 24 is extruded and tightly abutted against the sealing gasket 13, and at the moment, the blade assembly 2 is in an inclined state in the valve cavity 14; when the valve cavity 14 is completely opened, the blade assembly 2 is perpendicular to the valve cavity 14, so that the blade assembly 2 can be driven by the driving assembly 3 to smoothly open and close the valve cavity 14. Set up like this and make airtight mode change to the extrusion from the overlap joint to not only make the impact that blade subassembly 2 received when closing little, improved life, and reduced the maintenance cost, make moreover that the leakproofness can improve greatly.
Specifically, the driving assembly 3 includes a crank arm link 32 and an actuator 31, and achieves the technical effect of synchronously rotating the driving blade assembly 2 to open and close the valve cavity 14 through the following connection relationship: crank arm connecting rod 32 with valve rod 22 is connected, executor 31 puts up even on valve body frame 11, and its and arbitrary valve rod 22 stretch out the end and link to each other, and the drive power of executor 31 has been enlargied in setting up of crank arm connecting rod 32 to improved elastic metal sealing strip 24 extrusion and supported tightly sealed steadiness and dynamics on 13, improved and guaranteed sealed effect.
Furthermore, the actuator 31 is a wheel-worm type manual actuator 31, so that the brake force is large, the self-locking performance is good, and the preparation cost is low.
Further, valve body frame 11 is in all welding of the department of stretching out of valve rod 22 is equipped with an axle sleeve, axle sleeve and corresponding all be equipped with a sealing washer between the valve rod 22, set up like this and not only reduced the wearing and tearing of valve rod 22 and valve body frame 11, effectively avoided sewage to get into blade subassembly 2's inside moreover, improved blade subassembly 2's life and leakproofness, specifically, the material of axle sleeve is selecting according to actual need, can select the brass that wearability and intensity are good.
Furthermore, the sealing ring is a V-shaped sealing ring, so that the lip of the sealing ring can be always extruded and tightly abutted on the surface of the valve rod 22, and the sealing effect is good.
Further, the last cladding of keel frame 21 has sealed cushion, and specifically, sealed cushion can select for use silica gel or rubber materials to make. Set up like this and effectively avoided sewage to get into blade subassembly 2 from the clearance between blade 23 and the keel frame 21 inside, further improved blade subassembly 2's life and leakproofness.
Further, still be equipped with on the outer wall of valve body frame 11 a pair of with valve rod 22 corresponds normal and smoothly opening and close of normal and smoothly of transferring to the valve has been guaranteed to the setting like this and has improved valve rod 22 pivoted stability and smoothness nature.
The working principle of the invention is as follows: when the flow and direction regulating valve needs to be opened, the driving assembly 3 is controlled to work, the driving assembly 3 drives the valve rod 22 to synchronously rotate, the valve rod 22 drives the blade assembly 2 to synchronously rotate, so that the metal sealing strip is separated from the sealing gasket 13, the valve cavity 14 is opened, and when the valve cavity 14 is opened to a required opening degree, the driving assembly 3 is controlled to stop working; when the flow-regulating and direction-regulating valve needs to be closed, the driving assembly 3 is controlled to work, the driving assembly 3 drives the valve rod 22 to synchronously rotate, and the valve rod 22 drives the blade assembly 2 to synchronously rotate, so that the metal sealing strip is extruded and tightly abutted to the sealing gasket 13, the valve cavity 14 is closed, and the driving assembly 3 is controlled to stop working at the same time.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.

Claims (10)

1. A flow and direction regulating valve, comprising:
the valve body comprises a valve body frame, at least one partition plate and a sealing gasket, wherein the partition plate divides the valve body frame into a plurality of valve cavities with the same size, and the sealing gasket is covered on the valve cavities;
the valve body comprises a valve cavity, a plurality of blade assemblies, a plurality of valve cavities and a plurality of valve rods, wherein the number of the blade assemblies is the same as that of the valve cavities, each blade assembly comprises a keel frame, a valve rod, a blade and an elastic metal sealing strip, the elastic metal sealing strips are coated on the edge of the corresponding blade, the blades are connected to the keel frames, the valve rods are fixedly connected in the keel frames, and two ends of the valve rods respectively extend out of the keel frames and the valve body frames in sequence;
the driving assembly is connected with the valve rod and used for driving the blade assembly to synchronously rotate so as to open and close the valve cavity, and when the valve cavity is in a closed state, the elastic metal sealing strip is extruded and abutted against the sealing pad.
2. A flow and direction regulating valve according to claim 1, wherein said vanes are 2 in number and are symmetrically attached to opposite sides of said keel frame.
3. The flow regulating valve according to claim 1, wherein said drive assembly comprises an actuator and a crank arm linkage, said crank arm linkage being connected to said valve stem, said actuator frame being attached to said valve body frame and being connected to an extended end of either of said valve stems.
4. The flow regulating valve as recited in claim 3 wherein said actuator is a wheel and worm manual actuator.
5. A flow and direction regulating valve as claimed in claim 1, wherein a shaft sleeve is welded to the valve body frame at the extending portion of the valve rod, and a sealing ring is arranged between each shaft sleeve and the corresponding valve rod.
6. The flow regulating valve as claimed in claim 5, wherein said sealing ring is a V-shaped sealing ring.
7. The flow and direction regulating valve according to claim 1, wherein said keel frame is coated with a sealing rubber gasket.
8. A flow and direction regulating valve as claimed in claim 1, wherein a pair of bearing seats is further provided on the outer wall of the valve body frame for corresponding rotational engagement with the valve stem.
9. The flow-regulating and direction-regulating valve according to claim 1, wherein the valve body frame is formed by sequentially clamping four rectangular valve plates.
10. A flow and direction regulating valve according to any one of claims 1, 8 or 9, wherein the two ends of the valve body frame are respectively provided with a matched flange.
CN202210164121.4A 2022-02-21 2022-02-22 Flow and direction regulating valve Pending CN114738497A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210158801 2022-02-21
CN2022101588015 2022-02-21

Publications (1)

Publication Number Publication Date
CN114738497A true CN114738497A (en) 2022-07-12

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ID=82275079

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210164121.4A Pending CN114738497A (en) 2022-02-21 2022-02-22 Flow and direction regulating valve

Country Status (1)

Country Link
CN (1) CN114738497A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256143A (en) * 1978-11-22 1981-03-17 Actionair Equipment Limited Shut-off damper
US4469132A (en) * 1982-06-28 1984-09-04 Mcquay Inc. Damper apparatus
CN101576266A (en) * 2009-06-18 2009-11-11 北京金业联和电机有限公司 High-temperature gas damper
CN105697795A (en) * 2016-03-29 2016-06-22 苏州苏和通风设备制造有限公司 Sealing valve
CN206221679U (en) * 2016-11-10 2017-06-06 绍兴上虞九阳风机有限公司 A kind of anti-fire smoke expelling valve
CN210088019U (en) * 2019-04-13 2020-02-18 苏州苏和通风设备制造有限公司 Airtight valve for ventilating duct
CN210196488U (en) * 2019-06-28 2020-03-27 厦门理工学院 Rotary blade valve
CN212775622U (en) * 2020-06-23 2021-03-23 海口昇源消防器材有限公司 Fire prevention valve of high leakproofness
CN213332428U (en) * 2020-10-14 2021-06-01 致和环境科技（江苏）有限公司 Square airtight adjusting air valve
CN215763319U (en) * 2021-06-18 2022-02-08 致和环境科技（江苏）有限公司 Square airtight valve

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256143A (en) * 1978-11-22 1981-03-17 Actionair Equipment Limited Shut-off damper
US4469132A (en) * 1982-06-28 1984-09-04 Mcquay Inc. Damper apparatus
CN101576266A (en) * 2009-06-18 2009-11-11 北京金业联和电机有限公司 High-temperature gas damper
CN105697795A (en) * 2016-03-29 2016-06-22 苏州苏和通风设备制造有限公司 Sealing valve
CN206221679U (en) * 2016-11-10 2017-06-06 绍兴上虞九阳风机有限公司 A kind of anti-fire smoke expelling valve
CN210088019U (en) * 2019-04-13 2020-02-18 苏州苏和通风设备制造有限公司 Airtight valve for ventilating duct
CN210196488U (en) * 2019-06-28 2020-03-27 厦门理工学院 Rotary blade valve
CN212775622U (en) * 2020-06-23 2021-03-23 海口昇源消防器材有限公司 Fire prevention valve of high leakproofness
CN213332428U (en) * 2020-10-14 2021-06-01 致和环境科技（江苏）有限公司 Square airtight adjusting air valve
CN215763319U (en) * 2021-06-18 2022-02-08 致和环境科技（江苏）有限公司 Square airtight valve

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