CN218844170U - Household sand-proof device - Google Patents

Household sand-proof device Download PDF

Info

Publication number
CN218844170U
CN218844170U CN202222962296.8U CN202222962296U CN218844170U CN 218844170 U CN218844170 U CN 218844170U CN 202222962296 U CN202222962296 U CN 202222962296U CN 218844170 U CN218844170 U CN 218844170U
Authority
CN
China
Prior art keywords
frame
mounting frame
air
rotating
dust
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.)
Active
Application number
CN202222962296.8U
Other languages
Chinese (zh)
Inventor
吴先焕
张方倩
冉永祥
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.)
Wuhan Business University
Original Assignee
Wuhan Business University
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 Wuhan Business University filed Critical Wuhan Business University
Priority to CN202222962296.8U priority Critical patent/CN218844170U/en
Application granted granted Critical
Publication of CN218844170U publication Critical patent/CN218844170U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Separating Particles In Gases By Inertia (AREA)

Abstract

The utility model provides a sand prevention dirt device of family, the device's installing frame is the rectangle framework, the leeward side of installing frame is provided with the dust sensor, a plurality of first aviation baffles interval distribution all connect in the upper and lower both sides of installing frame through first axis of rotation in the inboard of installing frame and both ends, first motor is installed in the upside of installing frame, the one end of first leading truck articulates in the output of first motor, a plurality of first axis of rotation that are located the installing frame upside all articulate in the other end of first leading truck, a plurality of second aviation baffles interval distribution just all are located the air inlet side of first aviation baffle in the inboard of installing frame, the both ends of a plurality of second aviation baffles all rotate through the second axis of rotation and connect in the left and right sides of installing frame, first cylinder is installed on the right side of installing frame, the one end of second leading truck articulates in the output of first cylinder, a plurality of second axis of rotation that are located the installing frame right side all articulate in the other end of second leading truck. The design has good sand and dust prevention effect and high reliability.

Description

Household sand-proof device
Technical Field
The utility model relates to the technical field of daily necessities, especially, relate to a family's dust prevention device.
Background
The louver window has the characteristics of simple structure, convenience, practicability, bright color and the like, and is widely applied to occasions such as families, office places and the like, for example, chinese patent CN2203345Y discloses a glass louver window, and the window transformation is realized by rotating a glass plate. However, such a common louver window only has the functions of shading the sun, adjusting indoor light and protecting privacy, and does not have the function of filtering the dust particles in indoor and outdoor circulating air, and when a house is close to a roadside or near a construction site, because a large amount of dust particles exist in the air, if the louver window is not filtered, the health of people can be seriously threatened under the ventilation condition.
Disclosure of Invention
The utility model aims at overcoming the poor defect and the problem of shutter dust control effect that exist among the prior art, providing an effectual family dust control device of dust control.
In order to realize the above purpose, the technical proposal of the utility model is that:
a household dust and sand prevention device comprises a mounting frame, a first rotating assembly and a second rotating assembly, wherein the mounting frame is a rectangular frame body, and a dust sensor is arranged on the leeward side of the mounting frame;
the first rotating assembly comprises a first guide frame, a first motor and a plurality of first air deflectors, the first air deflectors are distributed on the inner side of the mounting frame at intervals, two ends of the first air deflectors are rotatably connected to the upper side and the lower side of the mounting frame through first rotating shafts, the first motor is mounted on the upper side of the mounting frame, one end of the first guide frame is hinged to the output end of the first motor, and the first rotating shafts on the upper side of the mounting frame are hinged to the other end of the first guide frame;
the second rotating assembly comprises a second guide frame, a first air cylinder and a plurality of second air deflectors, the second air deflectors are distributed on the inner side of the mounting frame at intervals and are located on the air inlet side of the first air deflectors, the two ends of the second air deflectors are connected to the left side and the right side of the mounting frame in a rotating mode through second rotating shafts, the first air cylinder is mounted on the right side of the mounting frame, one end of the second guide frame is hinged to the output end of the first air cylinder, and the second rotating shafts located on the right side of the mounting frame are hinged to the other end of the second guide frame.
The downside of installing frame is provided with collects the box, the air vent has been seted up to the downside of mounting bracket, the air vent with collect the box and be linked together.
The vent holes comprise a first vent hole and a second vent hole, the first vent hole is arranged relative to the air inlet side of the first air deflector, and the second vent hole is arranged relative to the air inlet side of the second air deflector.
And a dust suppressant is arranged in the collection box.
The first rotating assembly further comprises a first rotating rod and a first guide rod, one end of the first rotating rod is sleeved with the first rotating shaft and the other end of the upper side of the installing frame and is rotatably connected with the first guide frame, a connecting groove is formed in the middle of the first guide frame, one end of the first guide rod is connected with the output end of the motor, and the other end of the first guide rod is hinged to the first guide frame through the connecting groove.
First rotation subassembly still including two first baffles, two first baffle all connect in the upside of installing frame, two first baffle symmetric distribution in the left and right sides of first guide bar.
The second rotating assembly further comprises a second rotating rod, and one end of the second rotating rod is sleeved with the second rotating shaft and the other end of the second rotating rod, which are located on the right side of the installing frame, and the second rotating shaft and the other end of the second rotating rod are rotatably connected with the second guide frame.
The second rotating assembly further comprises a second baffle, and the second baffle is connected to the right side of the mounting frame and located in a gap between two adjacent second rotating rods and the second guide frame.
The middle part of the inner side of the mounting frame is provided with a support frame, the support frame is located in the middle of the mounting frame, one side, opposite to the second air deflector, of the support frame is provided with a mounting block, a through groove is formed in the middle of the second air deflector, the through groove is matched with the support frame in shape, one end of a connecting rod is connected to one side wall of the through groove, the other end of the connecting rod penetrates through the mounting block and then is connected to the other side wall of the through groove, and the second air deflector is rotatably connected to the mounting block through the connecting rod.
The first rotating assemblies are arranged in two groups, and the first rotating assemblies are symmetrically distributed on the inner side of the mounting frame along the axis of the mounting frame.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the household dust and sand prevention device, the size of a passage for external air to enter a room can be adjusted by adjusting the rotating angle of the first air deflector and the second air deflector through the combination form of the first air deflector and the second air deflector; through dust sensor detection room dust particle concentration, when concentration is great, all adjust the clearance between the first aviation baffle and the clearance between the second aviation baffle for a short time, can be outside the installing frame with most dust separation. Therefore, the utility model discloses sand prevention dirt is effectual.
2. The utility model relates to an among the family's dust control device, through setting up collection box and air vent, when outside dust is by the separation, adsorb the dust through the air vent, avoid long-term work back dust to pile up on first aviation baffle and second aviation baffle, influence the normal rotation of first aviation baffle and second aviation baffle. Therefore, the utility model discloses the reliability is high, life is longer.
3. In the household dust and sand prevention device, each first air deflector is connected in series through the first guide frame, each first air deflector is driven to rotate synchronously when the first motor rotates, each second air deflector is connected in series through the second guide frame, and each second air deflector is driven to rotate synchronously when the first cylinder works; the rotation angle of the first air deflector and the second air deflector is limited through the first baffle and the second baffle, and the first guide frame and the second guide frame cannot normally return when the rotation angle is too large. Therefore, the utility model discloses stable in structure.
4. The utility model relates to an among the family's dust prevention device, through set up the support frame in the middle part of the installing frame, the support frame provides the effect of auxiliary stay, and the second aviation baffle can rotate on the installation piece, when avoiding leading to the one end rotation of second aviation baffle because of the length overlength of second aviation baffle, and the other end lags and rotates, influences the dust prevention effect of device. Therefore, the utility model discloses the reliability is high, sand prevention dirt is effectual.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view schematically illustrating the present invention.
Fig. 3 is a schematic structural diagram of the middle mounting frame and the collecting box of the present invention.
Fig. 4 is a schematic top view of the present invention.
Fig. 5 is a schematic view of a part of the structure of the first rotating assembly and the mounting frame of the present invention.
Fig. 6 is a right-side schematic view of the present invention.
Fig. 7 is a schematic structural view of a second air guiding plate according to the present invention.
Fig. 8 is a schematic structural view of the middle support frame of the present invention.
In the figure: the air duct comprises a mounting frame 1, a first rotating assembly 2, a first air deflector 21, a first guide frame 22, a first motor 23, a first rotating shaft 24, a first rotating rod 25, a first guide rod 26, a connecting groove 27, a first baffle 28, a second rotating assembly 3, a second guide frame 32, a first air cylinder 33, a second rotating shaft 34, a second rotating rod 35, a through groove 36, a connecting rod 37, a second baffle 38, a collecting box 4, an air vent 5, a first air vent 51, a second air vent 52, a support frame 6 and a mounting block 7.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 8, a household dust and sand prevention device comprises an installation frame 1, a first rotating assembly 2 and a second rotating assembly 3, wherein the installation frame 1 is a rectangular frame body, and a dust sensor is arranged on the leeward side of the installation frame 1;
the first rotating assembly 2 comprises a first guide frame 22, a first motor 23 and a plurality of first air deflectors 21, the first air deflectors 21 are distributed on the inner side of the mounting frame 1 at intervals, two ends of the first air deflectors 21 are rotatably connected to the upper side and the lower side of the mounting frame 1 through first rotating shafts 24, the first motor 23 is mounted on the upper side of the mounting frame 1, one end of the first guide frame 22 is hinged to the output end of the first motor 23, and the first rotating shafts 24 on the upper side of the mounting frame 1 are hinged to the other end of the first guide frame 22;
the second rotating assembly 3 comprises a second guide frame 32, a first air cylinder 33 and a plurality of second air deflectors 31, the second air deflectors 31 are distributed on the inner side of the installation frame 1 at intervals and are located on the air inlet side of the first air deflectors 21, the two ends of the second air deflectors 31 are connected to the left side and the right side of the installation frame 1 in a rotating mode through second rotating shafts 34, the first air cylinder 33 is installed on the right side of the installation frame 1, one end of the second guide frame 32 is hinged to the output end of the first air cylinder 33, and the second rotating shafts 34 located on the right side of the installation frame 1 are hinged to the other end of the second guide frame 32.
The downside of installing frame 1 is provided with collects box 4, air vent 5 has been seted up to the downside of installing frame 1, air vent 5 with collect box 4 and be linked together.
The vent hole 5 includes a first vent hole 51 and a second vent hole 52, the first vent hole 51 is disposed opposite to the air intake side of the first air deflector 21, and the second vent hole 52 is disposed opposite to the air intake side of the second air deflector 31.
And a dust suppressant is arranged in the collecting box 4.
The first rotating assembly 2 further comprises a first rotating rod 25 and a first guide rod 26, one end of the first rotating rod 25 is sleeved on a first rotating shaft 24 located on the upper side of the mounting frame 1, the other end of the first rotating rod is rotatably connected to the first guide frame 22, a connecting groove 27 is formed in the middle of the first guide frame 22, one end of the first guide rod 26 is connected to the output end of the first motor 23, and the other end of the first rotating rod is hinged to the first guide frame 22 through the connecting groove 27.
The first rotating assembly 2 further comprises two first baffle plates 28, the two first baffle plates 28 are connected to the upper side of the mounting frame 1, and the two first baffle plates 28 are symmetrically distributed on the left side and the right side of the first guide rod 26.
The second rotating assembly 3 further comprises a second rotating rod 35, and one end of the second rotating rod 35 is sleeved on the second rotating shaft 34 on the right side of the installation frame 1, and the other end of the second rotating rod is rotatably connected to the second guide frame 32.
The second rotating assembly 3 further comprises a second baffle 38, and the second baffle 38 is connected to the right side of the installation frame 1 and is located in a gap between two adjacent second rotating rods 35 and the second guide frame 32.
The middle part of the inner side of the mounting frame 1 is provided with a support frame 6, the support frame 6 is located in the middle of the mounting frame 1, one side of the support frame 6, which is opposite to the second air deflector 31, is provided with a mounting block 7, the middle part of the second air deflector 31 is provided with a through groove 36, the through groove 36 is matched with the support frame 6 in shape, one end of a connecting rod 37 is connected to one side wall of the through groove 36, the other end of the connecting rod passes through the mounting block 7 and then is connected to the other side wall of the through groove 36, and the second air deflector 31 is rotatably connected to the mounting block 7 through the connecting rod 37.
The first rotating assemblies 2 are arranged in two groups, and the first rotating assemblies 2 are symmetrically distributed on the inner side of the mounting frame 1 along the axis of the mounting frame 1.
The principle of the utility model is explained as follows:
the utility model also comprises a controller and a relay, the relay is electrically connected with the first motor 23 and the first cylinder 33, the dust sensor sends the detected air information to the controller, the controller controls the relay to open or close the first motor 23 and the first cylinder 33, the structures of the dust sensor and the controller and the detection principle of the device refer to the structures of the dust sensor, the controller and the like disclosed in the Chinese patent CN105020796B,
when the detection value of the dust sensor exceeds a set value, the detection information is sent to the controller, the controller controls the relay to start the first motor 23 and the first air cylinder 33, the first motor 23 rotates to drive the first air guide plates 21 to rotate, the gap between every two adjacent first air guide plates 21 is reduced, meanwhile, the first air cylinder 33 rotates to drive the second air guide plates 31 to rotate, the gap between every two adjacent second air guide plates 31 is reduced, dust in the air falls into the air vent 5 after passing through the second air guide plates 31, when the detection value of the dust sensor is smaller than the set value, the first motor 23 and the first air cylinder 33 are controlled to work to drive the first air guide plates 21 and the second air guide plates 31 to rotate, the distance between every two adjacent first air guide plates 21 is increased, and the distance between every two adjacent second air guide plates 31 is increased.
Example 1:
referring to fig. 1 to 6, a household dust and sand prevention device comprises an installation frame 1, two groups of first rotating assemblies 2 and a second rotating assembly 3, wherein the two groups of first rotating assemblies 2 are symmetrically distributed on the inner side of the installation frame 1 along the axis of the installation frame 1, the installation frame 1 is a rectangular frame body, and a dust sensor is arranged on the leeward side of the installation frame 1;
the first rotating assembly 2 comprises a first guide frame 22, a first motor 23 and a plurality of first air deflectors 21, the first air deflectors 21 are distributed on the inner side of the mounting frame 1 at intervals, two ends of the first air deflectors 21 are rotatably connected to the upper side and the lower side of the mounting frame 1 through first rotating shafts 24, the first motor 23 is mounted on the upper side of the mounting frame 1, one end of the first guide frame 22 is hinged to the output end of the first motor 23, and the first rotating shafts 24 on the upper side of the mounting frame 1 are hinged to the other end of the first guide frame 22;
the second rotating assembly 3 comprises a second guide frame 32, a first air cylinder 33 and a plurality of second air deflectors 31, the second air deflectors 31 are distributed on the inner side of the installation frame 1 at intervals and are located on the air inlet side of the first air deflectors 21, the two ends of the second air deflectors 31 are rotatably connected to the left side and the right side of the installation frame 1 through second rotating shafts 34, the first air cylinder 33 is installed on the right side of the installation frame 1, one end of the second guide frame 32 is hinged to the output end of the first air cylinder 33, and the second rotating shafts 34 located on the right side of the installation frame 1 are hinged to the other end of the second guide frame 32.
The lower side of the mounting frame 1 is provided with a collecting box 4, the lower side of the mounting frame 1 is provided with a vent hole 5, and the vent hole 5 is communicated with the collecting box 4.
The vent hole 5 includes a first vent hole 51 and a second vent hole 52, the first vent hole 51 is disposed opposite to the air intake side of the first air deflector 21, and the second vent hole 52 is disposed opposite to the air intake side of the second air deflector 31.
And a dust suppressant is arranged in the collecting box 4.
First rotation assembly 2 still includes first rotation pole 25, first guide bar 26, the pot head of first rotation pole 25 is located first rotation axis 24, the other end of installing frame 1 upside rotate connect in first leading truck 22, the spread groove 27 has been seted up at the middle part of first leading truck 22, the one end of first guide bar 26 connect in the output of first motor 23, the other end pass through the spread groove 27 articulate in first leading truck 22.
The second rotating assembly 3 further comprises a second rotating rod 35, and one end of the second rotating rod 35 is sleeved on the second rotating shaft 34 on the right side of the installation frame 1, and the other end of the second rotating rod is rotatably connected to the second guide frame 32.
Example 2:
the basic contents are the same as those of embodiment 1 except that:
referring to fig. 5 to 6, the first rotating assembly 2 further includes two first blocking plates 28, the two first blocking plates 28 are both connected to the upper side of the mounting frame 1, and the two first blocking plates 28 are symmetrically distributed on the left and right sides of the first guide bar 26. The second rotating assembly 3 further comprises a second baffle 38, and the second baffle 38 is connected to the right side of the installation frame 1 and is located in a gap between two adjacent second rotating rods 35 and the second guide frame 32.
Example 3:
the basic contents are the same as those of embodiment 1 except that:
referring to fig. 7 to 8, a support frame 6 is arranged in the middle of the inner side of the mounting frame 1, the support frame 6 is located in the middle of the mounting frame 1, a mounting block 7 is arranged on one side of the support frame 6, which is opposite to the second air deflector 31, a through groove 36 is formed in the middle of the second air deflector 31, the through groove 36 is matched with the support frame 6 in shape, one end of a connecting rod 37 is connected to one side wall of the through groove 36, the other end of the connecting rod 37 is connected to the other side wall of the through groove 36 after passing through the mounting block 7, and the second air deflector 31 is rotatably connected to the mounting block 7 through the connecting rod 37.

Claims (10)

1. The utility model provides a family's dust and sand prevention device which characterized in that: the dust sensor comprises a mounting frame (1), a first rotating assembly (2) and a second rotating assembly (3), wherein the mounting frame (1) is a rectangular frame body, and a dust sensor is arranged on the leeward side of the mounting frame (1);
the first rotating assembly (2) comprises a first guide frame (22), a first motor (23) and a plurality of first air deflectors (21), the first air deflectors (21) are distributed on the inner side of the mounting frame (1) at intervals, two ends of the first air deflectors (21) are rotatably connected to the upper side and the lower side of the mounting frame (1) through first rotating shafts (24), the first motor (23) is mounted on the upper side of the mounting frame (1), one end of the first guide frame (22) is hinged to the output end of the first motor (23), and the first rotating shafts (24) on the upper side of the mounting frame (1) are hinged to the other end of the first guide frame (22);
the second rotating assembly (3) comprises a second guide frame (32), a first air cylinder (33) and a plurality of second air deflectors (31), the second air deflectors (31) are distributed on the inner side of the mounting frame (1) at intervals and are located on the air inlet side of the first air deflectors (21), two ends of the second air deflectors (31) are rotatably connected to the left side and the right side of the mounting frame (1) through second rotating shafts (34), the first air cylinder (33) is mounted on the right side of the mounting frame (1), one end of the second guide frame (32) is hinged to the output end of the first air cylinder (33), and the second rotating shafts (34) located on the right side of the mounting frame (1) are hinged to the other end of the second guide frame (32).
2. A home dust and sand prevention device according to claim 1, wherein: the lower side of the mounting frame (1) is provided with a collecting box (4), the lower side of the mounting frame (1) is provided with a vent hole (5), and the vent hole (5) is communicated with the collecting box (4).
3. A home dust and sand prevention device according to claim 2, wherein: the vent holes (5) comprise a first vent hole (51) and a second vent hole (52), the first vent hole (51) is arranged relative to the air inlet side of the first air deflector (21), and the second vent hole (52) is arranged relative to the air inlet side of the second air deflector (31).
4. A home dust and sand prevention device according to claim 2, wherein: and a dust suppressant is arranged in the collecting box (4).
5. A home dust and sand prevention device according to claim 1, wherein: first rotation assembly (2) still include first rotation pole (25), first guide bar (26), the pot head of first rotation pole (25) is located first rotation axis (24), the other end of installing frame (1) upside rotate connect in first leading truck (22), spread groove (27) have been seted up at the middle part of first leading truck (22), the one end of first guide bar (26) connect in the output of first motor (23), the other end pass through spread groove (27) articulate in first leading truck (22).
6. A home dust and sand prevention device according to claim 5, wherein: first subassembly (2) of rotating still including two first baffles (28), two first baffle (28) all connect in the upside of installing frame (1), two first baffle (28) symmetric distribution in the left and right sides of first guide bar (26).
7. A home dust and sand prevention device according to claim 1, wherein: the second rotating assembly (3) further comprises a second rotating rod (35), one end of the second rotating rod (35) is sleeved with the second rotating shaft (34) on the right side of the mounting frame (1), and the other end of the second rotating rod is rotatably connected with the second guide frame (32).
8. A home dust and sand prevention device according to claim 7, wherein: the second rotating assembly (3) further comprises a second baffle (38), and the second baffle (38) is connected to the right side of the mounting frame (1) and is located in a gap between two adjacent second rotating rods (35) and the second guide frame (32).
9. A home dust and sand prevention device according to claim 1, wherein: the middle part of the inner side of the mounting frame (1) is provided with a support frame (6), the support frame (6) is located in the middle of the mounting frame (1), a mounting block (7) is arranged on one side, opposite to the second air deflector (31), of the support frame (6), the second air deflector (31) is rotatably connected to the mounting block (7) through a connecting rod (37), a through groove (36) is formed in the middle of the second air deflector (31), the through groove (36) is matched with the support frame (6) in shape, one end of the connecting rod (37) is connected to one side wall of the through groove (36), and the other end of the connecting rod (37) is connected to the other side wall of the through groove (36) after passing through the mounting block (7).
10. A home sandproof device according to claim 1, characterized in that: the first rotating assemblies (2) are arranged in two groups, and the first rotating assemblies (2) are symmetrically distributed on the inner side of the mounting frame (1) along the axis of the mounting frame (1).
CN202222962296.8U 2022-11-08 2022-11-08 Household sand-proof device Active CN218844170U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222962296.8U CN218844170U (en) 2022-11-08 2022-11-08 Household sand-proof device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222962296.8U CN218844170U (en) 2022-11-08 2022-11-08 Household sand-proof device

Publications (1)

Publication Number Publication Date
CN218844170U true CN218844170U (en) 2023-04-11

Family

ID=87306597

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222962296.8U Active CN218844170U (en) 2022-11-08 2022-11-08 Household sand-proof device

Country Status (1)

Country Link
CN (1) CN218844170U (en)

Similar Documents

Publication Publication Date Title
CN102721137B (en) Intelligent self-adapting dedusting fresh air system and fresh air dedusting method adopting system
DE19549698B4 (en) Shutter unit
CN105134044A (en) Dual-circulation purification window
CN106639823B (en) A kind of haze filtering window by monitoring air quality automatic shutter
US9182137B1 (en) Low profile, high volume, filtered window fan
CN204941247U (en) A kind of double-circulating purification window
CN108643800A (en) A kind of shutter for preventing dust from getting in
CN218844170U (en) Household sand-proof device
CN117052273A (en) Intelligent ecological window system and control method thereof
CN209687323U (en) A kind of Multifunction ventilated sound proof window
CN215637557U (en) Air conditioner indoor unit and air conditioner
CN112282609B (en) Door and window with fresh air ventilation function
CN212431218U (en) Outdoor body integral type nature ventilator
CN106320946A (en) Multifunctional intelligent window
CN210598732U (en) Remove haze new trend integration window
CN114811747A (en) Air conditioner indoor unit and control method
CN213811013U (en) Energy-saving ventilation structure for architectural design
CN213029086U (en) Energy-concerving and environment-protective type banister machine case heat abstractor
DE202007011819U1 (en) Ventilation on double façade
US20220195788A1 (en) Anti-mosquito and anti-haze purification window embedded with ventilation system
CN208139523U (en) Novel air wall
CN217735336U (en) Shutter and shelter
CN111827853A (en) Ventilation equipment for building energy conservation and emission reduction
CN216517691U (en) Prevent wind sand type shutter and box-type substation
CN206669960U (en) A kind of malleation antiseep intelligence split door and window purifies obstructing instrument device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant