CN215719716U - Low-noise split multi-leaf air valve - Google Patents

Low-noise split multi-leaf air valve Download PDF

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Publication number
CN215719716U
CN215719716U CN202121476194.4U CN202121476194U CN215719716U CN 215719716 U CN215719716 U CN 215719716U CN 202121476194 U CN202121476194 U CN 202121476194U CN 215719716 U CN215719716 U CN 215719716U
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China
Prior art keywords
fan
leaf
box body
gear
dust screen
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Active
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CN202121476194.4U
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Chinese (zh)
Inventor
周海波
周海峰
周海涛
朱厚强
贾建辉
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Beijing Haisheng Hongyu Construction and Development Co.,Ltd.
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Beijing Haisheng Hongyu Electromechanical Installation Co ltd
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Priority to CN202121476194.4U priority Critical patent/CN215719716U/en
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Abstract

The application provides a many pages of blast gates are run from opposite directions to low noise belongs to air regulation valve technical field. The low-noise split multi-page air valve comprises an air valve box assembly and an air valve leaf assembly. The output shaft of the first motor rotates to penetrate through the top of the mounting frame and is fixedly connected with the top of the box body, the first fan and the second fan are arranged on the inner side of the dustproof net, the multiple groups of blades are in transmission connection through the gear set, and the two groups of air valve blade components are respectively arranged at the air inlet and the air outlet of the box body. This many pages of blast gates are run from opposite directions to low noise is through the fan of side-mounting subtend setting in the dust screen, and the dust screen is effectual prevents dust to the blast gate, and the fan can be automatic clear up dust screen and blast gate blade simultaneously, through the angle of motor control blast gate blade and open and shut, the inside cross-flow fan that sets up of blast gate simultaneously, the noise that produces the interior air current striking box inner wall of noise and wind channel when effectively reducing blast gate box business turn over wind.

Description

Low-noise split multi-leaf air valve
Technical Field
The application relates to the technical field of air volume adjusting valves, in particular to a low-noise split multi-page air valve.
Background
An air volume adjusting valve is called an air valve for short, is an indispensable central air-conditioning terminal accessory in ventilation, air conditioning and air purification projects of industrial factory buildings and is generally used in air conditioners and ventilation system pipelines for adjusting the air volume of branch pipes and can also be used for mixed adjustment of fresh air and return air, the existing air valve is divided into a manual air valve and an automatic air valve, most air purification projects adopt the automatic air valve, the automatic air valve drives an air valve leaf to open and close through an external controller to adjust the air volume, the traditional air valve is not provided with a sound insulation facility, noise is generated when air enters and exits, dust is easily accumulated inside the air valve in the ventilation process, if the dust is accumulated too much, the air valve is blocked inside, the air valve leaf is difficult to rotate, the service life of the air valve is shortened, meanwhile, bacteria are easily grown inside the air valve, and the air passing through the air valve is polluted, the long-term inhalation causes harm to the health of human bodies, so how to invent a low-noise split multi-leaf air valve to improve the problems becomes a problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the application provides a many pages of blast gates are run from opposite directions to low noise, aims at improving traditional blast gate and does not set up syllable-dividing, and the inside dust that piles up easily of blast gate influences blast gate life problem.
The embodiment of the application provides a low noise is to opening many pages of blast gates, including blast gate case subassembly and blast gate page or leaf subassembly.
The air valve box component comprises a mounting frame, a box body, a first motor, a dust screen, a first fan, a second fan and a cross-flow fan, wherein the box body is rotatably installed on the inner wall of the mounting frame, the first motor is fixedly installed at the top of the mounting frame, an output shaft of the first motor is rotatably penetrated through the top of the mounting frame and fixedly connected with the top of the box body, the dust screen is installed at an air inlet and an air outlet on two sides of the box body, the first fan and the second fan are fixedly installed at the air inlet and the air outlet of the box body respectively, the first fan and the second fan are arranged on the inner side of the dust screen, and the cross-flow fan is arranged inside the box body.
The air valve leaf subassembly includes frame, leaf, gear train, second gear, second motor and slip table, frame fixed mounting in the air intake and the air outlet of box, the leaf both ends rotate install in the frame inner wall, the leaf is provided with the multiunit, the multiunit the leaf passes through the gear train transmission is connected, the second gear rotate install in the frame and with the gear train meshing transmission, slip table fixed mounting in the frame, the second motor with the slider fixed connection of slip table, the output shaft of second motor slide run through in the frame lateral wall and with second gear key-type connection, the air valve leaf subassembly is provided with two sets ofly, two sets of the air valve leaf subassembly install respectively in the air intake and the air outlet of box.
In the above-mentioned realization in-process, air intake and air outlet through in blast gate box both sides set up the dust screen, fan at the inside installation subtend setting of dust screen, the dust screen is effectual prevents dust to the blast gate, prevent that the dust from getting into in the blast gate box, piling up and breeding of bacterium of inside dust has been avoided, the fan can be automatic clears up dust screen and blast gate blade simultaneously, alleviate operating personnel's burden, the life of extension equipment, through setting up the blast gate blade of being connected with the gear train transmission, the angle of accessible motor control blast gate blade with open and shut, simultaneously set up cross-flow fan at the inside wind channel of blast gate, can effectively reduce the noise that can produce noise and the noise that the interior air current of blast gate struck the box inner wall and produce when the blast gate box business turn over wind.
In a specific embodiment, the bottom of the box body is provided with a limit groove, and the bottom of the dust screen is inserted into the limit groove.
In the implementation process, the bottom of the box body is provided with a limiting groove, the dust screen is inserted into the limiting groove, and the dust screen is prevented from being blown to cause vibration and deviation when the first fan and the second fan are started.
In a specific implementation scheme, a mounting groove is formed in the top of the mounting frame, the dust screen is inserted into the mounting groove in a sliding mode, and the dust screen is detachably mounted inside the box body.
In the implementation process, the dust screen is detachably mounted in the box body, the mounting frame is provided with the mounting groove at the top, the dust screen can be taken out from the mounting groove to be replaced and cleaned, and the dust screen is prevented from being blocked due to long-time use.
In a specific embodiment, the dust screen is provided with a handle, and the handle is fixedly arranged on the top of the dust screen.
In the implementation process, the top of the dust screen is provided with the handle, and the dust screen can be rapidly taken out from the box body through pulling the handle, so that the installation and replacement operations are more convenient, convenient and efficient.
In a specific implementation scheme, the top and the bottom of the inner wall of the box body are provided with moisture-proof pads, and the moisture-proof pads are detachably connected with the inner wall of the box body.
In the above-mentioned realization in-process, the moisture that dampproofing pad can effectual absorption trades the wind in-process and has had, and moisture piles up too much then can lead to ageing in the blast gate, and blast gate blade is difficult to rotate, shortens blast gate life.
In a specific embodiment, sound-absorbing cotton is arranged at the top and the bottom of the inner wall of the box body and is fixedly connected with the inner wall of the box body.
In the implementation process, the sound absorbing cotton is fixedly connected to the top and the bottom of the inner wall of the box body, and the sound absorbing cotton can absorb noise generated when air flow in the air valve collides with the inner wall of the box body, so that the overall noise of the air valve is smaller.
In a specific implementation scheme, the air valve box assembly is further provided with a standby power supply, and the standby power supply is electrically connected with the second motor and the sliding table.
In the implementation process, the standby power supply can provide electric energy when the air valve loses the power supply state, and power is supplied for a short time when the power supply state is cut off or accidentally, so that the air valve cannot be adjusted when the air valve is closed, and air cannot circulate.
In a specific embodiment, the first fan and the second fan are respectively provided with four groups, and the four groups of the first fan and the four groups of the second fan are symmetrically arranged at the air outlet and the air inlet of the box body in parallel.
In the implementation process, the first fan and the second fan are respectively provided with four groups, so that the wind power provided by the first fan and the second fan is stronger, and the automatic dust removal capability of the dust screen and the blades is stronger.
In a specific embodiment, the sheets are arranged in a diamond shape, and a plurality of groups of sheets are in soft lap joint with each other.
In the implementation process, the blades are arranged in a diamond shape, dust on the blades can be blown away faster when the first fan and the second fan remove dust on the blades, and meanwhile, the multiple groups of blades are in soft lap joint, so that the air valve is attached more tightly in a closed state.
In a specific embodiment, the gear train includes first gear, first pivot, drive gear and second pivot, first gear is provided with the multiunit, the multiunit first gear passes through respectively first pivot and multiunit the leaf transmission is connected, drive gear pass through the second pivot rotate install in frame, multiunit first gear and multiunit drive gear meshes in proper order.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of a low noise split multi-leaf damper according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an air valve box assembly provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a blast gate assembly provided by an embodiment of the present application;
fig. 4 is a partially enlarged view of a region a provided in the present embodiment.
In the figure: 100-a wind valve box assembly; 110-a mounting frame; 111-mounting grooves; 122-a moisture barrier; 123-sound absorbing cotton; 120-a box body; 121-a limiting groove; 130-a first motor; 140-dust screen; 141-a handle; 150-a first fan; 160-a second fan; 170-crossflow blower; 180-a backup power supply; 200-a damper leaf assembly; 210-a frame; 220-a sheet; 230-gear set; 231-a first gear; 232-a first rotating shaft; 233-transmission gear; 234-a second shaft; 240-second gear; 250-a second motor; 260-sliding table.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the present application provides a low noise split multiple leaf damper, which includes a damper housing assembly 100 and a damper leaf assembly 200.
Referring to fig. 2, the air valve box assembly 100 includes an installation frame 110, a box body 120, a first motor 130, a dust screen 140, a first fan 150, a second fan 160 and a cross-flow fan 170, the box body 120 is rotatably installed on an inner wall of the installation frame 110, the first motor 130 is fixedly installed on a top of the installation frame 110, an output shaft of the first motor 130 rotatably penetrates through a top of the installation frame 110 and is fixedly connected with a top of the box body 120, the dust screen 140 is installed at an air inlet and an air outlet on two sides of the box body 120, the first fan 150 and the second fan 160 are respectively fixedly installed at the air inlet and the air outlet of the box body 120, the first fan 150 and the second fan 160 are both disposed inside the dust screen 140, and the cross-flow fan 170 is disposed inside the box body 120.
In other embodiments, the bottom of the box 120 is provided with a limiting groove 121, and the bottom of the dust screen 140 is inserted into the limiting groove 121, so as to prevent the dust screen 140 from being vibrated and deflected due to the dust screen 140 being blown when the first fan 150 and the second fan 160 are started.
In other embodiments, the top of the mounting frame 110 is provided with a mounting groove 111, the dust screen 140 is slidably inserted into the mounting groove 111, the dust screen 140 is detachably mounted inside the box 120, and the dust screen 140 can be taken out from the mounting groove 111 for replacement and cleaning, thereby avoiding the blockage of the dust screen 140 due to long-term use.
Referring to fig. 4, the dust screen 140 is provided with a handle 141, the handle 141 is fixedly installed on the top of the dust screen 140, and the dust screen 140 can be quickly taken out from the box 120 by pulling the handle 141, so that the installation and replacement operations are more convenient, faster, more convenient and more efficient.
In other embodiments, the top and the bottom of the inner wall of the box body 120 are provided with the moisture-proof pads 122, the moisture-proof pads 122 are detachably connected with the inner wall of the box body 120, moisture in the air exchange process can be effectively absorbed by the moisture-proof pads 122, excessive moisture accumulation can lead to internal aging of the air valve, the air valve leaf 220 is difficult to rotate, and the service life of the air valve is shortened.
In other embodiments, sound-absorbing cotton 123 is arranged at the top and the bottom of the inner wall of the box body 120, the sound-absorbing cotton 123 is fixedly connected with the inner wall of the box body 120, and the sound-absorbing cotton 123 can absorb noise generated when the air flow in the air valve collides with the inner wall of the box body 120, so that the noise of the whole air valve is smaller.
In other embodiments, the wind valve box assembly 100 is further provided with a standby power supply 180, the standby power supply 180 is electrically connected with the second motor 250 and the sliding table 260, the standby power supply 180 can provide electric energy when the wind valve is in a power failure state, power is supplied for a short time when the wind valve is in an accidental power failure state or in a power cut-off state, and the wind valve cannot be adjusted when the wind valve is closed, so that air cannot circulate.
In other embodiments, the first fan 150 and the second fan 160 are respectively provided with four sets, and the four sets of the first fan 150 and the four sets of the second fan 160 are symmetrically arranged at the air outlet and the air inlet of the box 120 in parallel, so that the wind power provided by the first fan 150 and the second fan 160 is stronger, and the automatic dust removing capability of the dust screen 140 and the sheet 220 is stronger.
Referring to fig. 3, the air valve assembly 200 includes a frame 210, blades 220, a gear set 230, a second gear 240, a second motor 250 and a sliding table 260, the frame 210 is fixedly mounted at an air inlet and an air outlet of the box 120, two ends of the blades 220 are rotatably mounted on an inner wall of the frame 210, the blades 220 are provided with a plurality of sets, the plurality of sets of blades 220 are in transmission connection through the gear set 230, the second gear 240 is rotatably mounted on the frame 210 and is in meshing transmission with the gear set 230, the sliding table 260 is fixedly mounted on the frame 210, the second motor 250 is fixedly connected with a slider of the sliding table 260, an output shaft of the second motor 250 slidably penetrates through a side wall of the frame 210 and is in key connection with the second gear 240, the air valve assembly 200 is provided with two sets, and the two sets of air valve assemblies 200 are respectively mounted at the air inlet and the air outlet of the box 120.
In other embodiments, the blades 220 are arranged in a diamond shape, the multiple groups of blades 220 are in soft lap joint with each other, dust on the blades 220 can be blown away more quickly when the first fan 150 and the second fan 160 remove dust from the blades 220, and meanwhile, the blades 220 are attached more tightly in a closed state of the air valve.
In other embodiments, the gear set 230 includes a first gear 231, a first rotating shaft 232, a transmission gear 233 and a second rotating shaft 234, the first gear 231 is provided with a plurality of sets, the plurality of sets of first gears 231 are respectively in transmission connection with the plurality of sets of blades 220 through the first rotating shaft 232, the transmission gear 233 is rotatably mounted to the frame 210 through the second rotating shaft 234, and the plurality of sets of first gears 231 are sequentially meshed with the plurality of sets of transmission gears 233.
The working principle of the low-noise split multi-leaf air valve is as follows: when the dust filter is used, the second motor 250 and the sliding table 260 are started, the second motor 250 slides downwards on the sliding table 260 to drive the second gear 240 to be meshed with the first gear 231, the second motor 250 is started, the second motor 250 rotates to drive the second gear 240 and the first gear 231 to rotate so as to drive the blade 220 to rotate to a proper angle, the second motor 250 is closed, the cross flow fan 170 is started, airflow enters from the air inlet of the box 120 and passes through the cross flow fan 170 to reach the air outlet, the dust screen 140 is arranged at the air inlet and the air outlet of the box 120 to filter dust in the airflow entering the box 120, when the dust on the dust screen 140 is accumulated more, the sliding table 260 is started to enable the second motor 250 to move upwards on the sliding table 260 to enable the second gear 240 to be separated from the first gear 231, the first fan 150 is started, the airflow blown out by the first fan 150 to clean the dust on the dust screen 140 and the blade 220 at the air inlet, after the cleaning is finished, the first motor 130 is started, the first motor 130 rotates to drive the box body 120 to rotate, so that the positions of the air inlet and the air outlet of the box body 120 are exchanged, the second fan 160 is started, and the dust on the dust screen 140 and the blades 220 at the air outlet are cleaned.
It should be noted that the specific model specifications of the first motor 130, the second motor 250, the first fan 150, the second fan 160, and the cross-flow fan 170 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply of the first motor 130, the second motor 250, the first fan 150, the second fan 160 and the cross flow fan 170 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A low-noise split multi-leaf air valve is characterized by comprising
The air valve box assembly (100) comprises an installation frame (110), a box body (120), a first motor (130), a dust screen (140), a first fan (150), a second fan (160) and a cross-flow fan (170), wherein the box body (120) is rotatably installed on the inner wall of the installation frame (110), the first motor (130) is fixedly installed at the top of the installation frame (110), an output shaft of the first motor (130) rotates to penetrate through the top of the installation frame (110) and is fixedly connected with the top of the box body (120), the dust screen (140) is installed at an air inlet and an air outlet on two sides of the box body (120), the first fan (150) and the second fan (160) are fixedly installed at the air inlet and the air outlet of the box body (120) respectively, and the first fan (150) and the second fan (160) are both arranged on the inner side of the dust screen (140), the cross-flow fan (170) is arranged inside the box body (120);
blast gate page or leaf subassembly (200), blast gate page or leaf subassembly (200) includes frame (210), page or leaf (220), gear train (230), second gear (240), second motor (250) and slip table (260), frame (210) fixed mounting in the air intake and the air outlet of box (120), page or leaf (220) both ends rotate install in frame (210) inner wall, page or leaf (220) are provided with the multiunit, the multiunit page or leaf (220) pass through gear train (230) transmission is connected, second gear (240) rotate install in frame (210) and with gear train (230) meshing transmission, slip table (260) fixed mounting in frame (210), second motor (250) with the slider fixed connection of slip table (260), the output shaft of second motor (250) slide run through in frame (210) lateral wall and with second gear (240) key-type connection, the air valve leaf assemblies (200) are arranged in two groups, and the two groups of air valve leaf assemblies (200) are respectively arranged at the air inlet and the air outlet of the box body (120).
2. The low-noise split multi-leaf air valve as claimed in claim 1, wherein a limiting groove (121) is formed in the bottom of the box body (120), and the bottom of the dust screen (140) is inserted into the limiting groove (121).
3. The low-noise split multi-leaf air valve as claimed in claim 1, wherein a mounting groove (111) is formed in the top of the mounting frame (110), the dust screen (140) is slidably inserted into the mounting groove (111), and the dust screen (140) is detachably mounted inside the box body (120).
4. A low noise split multiple leaf damper according to claim 1, wherein said dust screen (140) is provided with a handle (141), said handle (141) being fixedly mounted on top of said dust screen (140).
5. A low noise split multiple leaf damper according to claim 1, wherein the top and bottom of the inner wall of the box (120) are provided with moisture-proof pads (122), and the moisture-proof pads (122) are detachably connected with the inner wall of the box (120).
6. A low noise split multiple-leaf damper as claimed in claim 1, wherein sound-absorbing cotton (123) is arranged on the top and bottom of the inner wall of the box body (120), and the sound-absorbing cotton (123) is fixedly connected with the inner wall of the box body (120).
7. A low noise split multiple leaf damper according to claim 1, wherein said damper box assembly (100) further comprises a backup power source (180), said backup power source (180) being electrically connected to said second motor (250) and said sliding platform (260).
8. A low noise split multiple-leaf damper as claimed in claim 1, wherein the first fan (150) and the second fan (160) are respectively provided with four sets, and the four sets of the first fan (150) and the four sets of the second fan (160) are symmetrically arranged at the air outlet and the air inlet of the box body (120) in parallel.
9. A low noise split multipage damper according to claim 1, wherein said sheets (220) are arranged in a diamond shape, and a plurality of sets of said sheets (220) are in soft lap joint with each other.
10. The low-noise split multi-leaf air valve is characterized in that the gear set (230) comprises a first gear (231), a first rotating shaft (232), a transmission gear (233) and a second rotating shaft (234), wherein the first gear (231) is provided with a plurality of groups, the plurality of groups of the first gear (231) are in transmission connection with the plurality of groups of the leaves (220) through the first rotating shaft (232), the transmission gear (233) is rotatably mounted on the frame (210) through the second rotating shaft (234), and the plurality of groups of the first gear (231) are sequentially meshed with the plurality of groups of the transmission gear (233).
CN202121476194.4U 2021-06-30 2021-06-30 Low-noise split multi-leaf air valve Active CN215719716U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121476194.4U CN215719716U (en) 2021-06-30 2021-06-30 Low-noise split multi-leaf air valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121476194.4U CN215719716U (en) 2021-06-30 2021-06-30 Low-noise split multi-leaf air valve

Publications (1)

Publication Number Publication Date
CN215719716U true CN215719716U (en) 2022-02-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121476194.4U Active CN215719716U (en) 2021-06-30 2021-06-30 Low-noise split multi-leaf air valve

Country Status (1)

Country Link
CN (1) CN215719716U (en)

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Address after: Room 904, Floor 9, Building 2, Yard 2, Jinguan North Second Road, Nanfaxin Town, Shunyi District, Beijing 101300

Patentee after: Beijing Haisheng Hongyu Construction and Development Co.,Ltd.

Address before: 101300 room 908, floor 9, building 2, yard 2, Jinguan North 2nd Road, Nanfaxin Town, Shunyi District, Beijing

Patentee before: Beijing Haisheng Hongyu electromechanical installation Co.,Ltd.