CN216664771U - Exhaust box - Google Patents
Exhaust box Download PDFInfo
- Publication number
- CN216664771U CN216664771U CN202120942005.1U CN202120942005U CN216664771U CN 216664771 U CN216664771 U CN 216664771U CN 202120942005 U CN202120942005 U CN 202120942005U CN 216664771 U CN216664771 U CN 216664771U
- Authority
- CN
- China
- Prior art keywords
- layer
- exhaust pipe
- exhaust
- water
- water absorption
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000010521 absorption reaction Methods 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000008961 swelling Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 72
- 238000010276 construction Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/32—Roof garden systems
Landscapes
- Ventilation (AREA)
Abstract
The utility model provides an exhaust box, and relates to the field of building exhaust equipment. The method comprises the following steps: an exhaust pipe and a water absorption device; the water absorption device is provided with a water absorption layer for absorbing water in the slope finding layer, and one end of the exhaust pipe is communicated with the water absorption layer. The water absorption device can absorb water in the slope finding layer, and the evaporated water is discharged to the outside air through the exhaust pipe, so that the waterproof layer is prevented from swelling and cracking.
Description
Technical Field
The utility model relates to the field of building exhaust equipment, in particular to an exhaust box.
Background
The slope finding layer is formed by building a certain gentle slope according to the designed drainage direction so as to organically dredge the roof rainwater to rainwater drainage systems of buildings and cities. The roofing structure generally comprises a fine stone concrete layer, a cement mortar protective layer, a heat preservation layer, a waterproof layer, a cement mortar leveling layer, a slope finding layer and a reinforced concrete panel from top to bottom.
In the roofing construction, the layer of looking for the slope contains certain moisture, if the waterproof layer construction is accomplished the unable discharge of moisture in the layer of looking for the slope, in case temperature is higher (especially in hot summer), the moisture evaporation, volume expansion, the waterproof layer can appear the phenomenon of bulging, and the waterproof layer can the fracture damage even, leads to the roofing percolating water.
In the prior art, in order to solve the cracking problem of the waterproof layer, an exhaust groove is usually arranged during the construction of the heat insulation layer, light loose materials such as ceramsite and the like are filled in the exhaust groove, and roof exhaust pipes are inserted at the joints of a plurality of exhaust grooves. However, the roof exhaust pipe is directly inserted into the loose filling material, so that the roof exhaust pipe is not easy to fix during construction, and is not good in stability after installation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an exhaust box which can discharge water in a slope finding layer to the outside air and avoid the bulge and crack of a waterproof layer.
The embodiment of the utility model is realized by the following steps:
the embodiment of the application provides an exhaust box, which comprises an exhaust pipe and a water absorption device; the water absorption device is provided with a water absorption layer for absorbing water in the slope finding layer, and one end of the exhaust pipe is communicated with the water absorption layer.
In some embodiments of the present invention, the water absorption device includes a box body and a plurality of air inlet pipes communicated with the box body; the box body and the air inlet pipe are both provided with water absorbing layers.
In some embodiments of the present invention, a fluffy layer for absorbing and retaining liquid is disposed inside the box body, and the fluffy layer is disposed inside the water-absorbing layer.
In some embodiments of the present invention, any one of the air inlet pipes is provided with a plurality of air inlet holes.
In some embodiments of the present invention, the above-mentioned further comprises a waterproof board for shielding rainwater, the waterproof board is provided with a first connector; the one end that water absorbing device was kept away from to the blast pipe is equipped with the second connector, and first connector and second connector can be dismantled and be connected.
In some embodiments of the present invention, the exhaust pipe is provided with a plurality of exhaust holes penetrating through the exhaust pipe.
In some embodiments of the present invention, the exhaust pipe further includes a protective cover, and the protective cover is sleeved outside the exhaust pipe.
In some embodiments of the present invention, the protection cover further includes a sealing ring, the sealing ring is disposed at a connection position of the protection cover and the exhaust pipe, and the sealing ring is detachably connected to the protection cover.
In some embodiments of the present invention, the above further comprises a plurality of locking members; the protection casing is equipped with a plurality of connecting rods, and the connecting rod passes the sealing washer and is connected with the retaining member.
In some embodiments of the present invention, the above-mentioned further includes a buckle, a snap ring and a base; the base is arranged on the protective cover, the buckle is arranged on the sealing ring, one end of the clamping ring is hinged with the base, and the other end of the clamping ring is a free end; the snap ring can be buckled with the buckle.
Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:
the water absorption device can absorb water in the slope finding layer, and the evaporated water is discharged to the outside air through the exhaust pipe, so that the waterproof layer is prevented from swelling and cracking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a vertical cross-sectional view of an exhaust box according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the box and the air inlet tube according to the embodiment of the present invention;
FIG. 3 is a horizontal sectional view of the case according to the embodiment of the present invention;
fig. 4 is a schematic view of a structure of a buckle and a snap ring according to an embodiment of the utility model.
Icon: 1-a water-absorbing layer; 2-an exhaust pipe; 3-a box body; 4, an air inlet pipe; 5-a fluffy layer; 6-air inlet holes; 7-a waterproof board; 8-a first linker; 9-a second connector; 10-exhaust hole; 11-a protective cover; 12-a sealing ring; 13-a connecting rod; 14-a retaining member; 15-buckling; 16-a snap ring; 17-base.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, the terms are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, "a plurality" represents at least 2.
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," "mounted," "connected," 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 by those skilled in the art according to specific situations.
Example 1
Referring to fig. 1-3, the present embodiment provides an exhaust box, which includes an exhaust pipe 2 and a water absorption device; the water absorption device is provided with a water absorption layer 1 for absorbing water in the slope finding layer, and one end of the exhaust pipe 2 is communicated with the water absorption layer 1.
In this embodiment, water absorption device is located the layer of looking for the slope in the roof wallboard, looks for the layer moisture that absorbs water and is gathered by layer 1 absorption that absorbs water in the slope, 2 one ends of blast pipe with absorb water layer 1 intercommunication, 2 other ends of blast pipe wear out the roof wallboard and communicate with the atmosphere, absorb water and slowly become vapor and discharge to the atmosphere from blast pipe 2 in the layer 1.
In detail, the water absorption layer 1 can be a porous water absorption resin soft board with communicated pores, and the pores are capillary pores, so that the water absorption layer 1 can absorb water in the slope finding layer. The water-absorbing resin is a novel functional polymer material. It has high water absorbing function of absorbing water several hundred to several thousand times heavier than itself and excellent water maintaining performance.
The slope finding layer is generally made of light aggregate, the surface of the light aggregate is rough and porous, the water absorption is good, moisture is easy to transfer in the slope finding layer, and the worry that the water absorption layer 1 cannot absorb the moisture in the slope finding layer is avoided.
In the embodiment, the water absorption device comprises a box body 3 and a plurality of air inlet pipes 4 communicated with the box body 3; the box body 3 and the air inlet pipe 4 are both provided with a water absorbing layer 1.
In detail, the box body 3 and the air inlet pipes 4 are both positioned in the slope finding layer, and the number of the air inlet pipes 4 can be multiple. The 3 volumes of box body are less, and look for the slope layer area great, if do not set up intake pipe 4, need set up a plurality of box bodies 3 and absorb water looking for the slope in situ to a plurality of blast pipes 2 of installation are discharged, occupy space very much. Utilize many intake pipes 4 to absorb water, water absorption layer 1 is connected with water absorption layer 1 in intake pipe 4 in box body 3, and water absorption layer 1 can be dry relatively after the evaporation of 1 moisture in water absorption layer in box body 3, and the dry region can slowly be soaked to the moisture in the layer 1 that absorbs water, realizes from this that the moisture shifts to in the box body 3 in the intake pipe 4 to by 2 evaporation discharge of blast pipe.
In this embodiment, a fluffy layer 5 for absorbing and retaining liquid is arranged inside the box body 3, and the fluffy layer 5 is positioned inside the water absorbing layer 1.
In detail, the pores are distributed in the fluffy layer 5, so that a high degree of hollowness is formed, the capillary tube wicking effect is strong, and a large amount of water can be absorbed and a large amount of gas can permeate instantly.
The lofty layer 5 may be loose absorbent fibers. When absorbent fiber contacted with steam, the hydrone adsorbed the fibrous surface earlier, then vapor to fibre internal diffusion, with the interior hydrophilic group on the macromolecule of fibre combine, the hydrone gets into fibrous gap hole afterwards, forms capillary water to adsorb to fluffy layer 5 in from the water conservancy diversion layer with moisture initiative, improve capillary flow dynamic effect, make more moisture transfer to in water conservancy diversion layer and the fluffy layer 5 fast in looking for the slope layer, solve the potential hidden danger that causes the roofing seepage.
In the present embodiment, any one of the intake pipes 4 is provided with a plurality of intake holes 6.
In detail, the air inlet hole 6 penetrates through the air inlet pipe 4, when the air inlet pipe 4 is buried in the slope finding layer, the slope finding layer passes through the air inlet hole 6 and is in contact with the water absorbing layer 1, and the speed of absorbing moisture of the slope finding layer by the air inlet hole 6 is increased.
In the embodiment, the rain-proof device further comprises a waterproof plate 7 for shielding rainwater, and the waterproof plate 7 is provided with a first connecting head 8; one end of the exhaust pipe 2 far away from the water absorption device is provided with a second connector 9, and the first connector 8 and the second connector 9 are detachably connected.
In detail, 2 one ends of blast pipe and external atmosphere intercommunication, but 2 vertical places of blast pipe, and at this moment, 2 openings of blast pipe up, if meet sleet weather, sleet is likely to pass through 2 entering box bodies 3 of blast pipe in, and a large amount of rainwater is piled up and is leaded to box body 3 and 4 internal water absorption layers of intake pipe 1 to absorb moisture and appear the saturation phenomenon, causes to look for the interior moisture of slope layer and sharply increases, roofing floor weight greatly increased, and the potential safety hazard is big.
If the exhaust pipe 2 is bent and horizontally placed after extending out of the roof wall panel, the exhaust pipe 2 occupies a large space of the roof and is not beautiful. The exhaust pipe 2 placed horizontally also has an opening, and it is unavoidable that rain and snow enter the exhaust pipe 2 through the opening.
The first connector 8 is provided with external threads, the second connector 9 is provided with a threaded hole, and the first connector 8 is in threaded connection with the second connector 9. After the exhaust pipe 2 is installed, the operator can screw the waterproof board 7 on the second connector 9. The first connecting head 8 is positioned at the center below the waterproof plate 7, so that the waterproof plate 7 can keep rain and snow around the exhaust pipe 2 off the exhaust pipe 2. The waterproof board 7 is conical, and rain and snow fall on the surface of the waterproof board 7 and can directly slide down. The flashing 7 may be made of a metallic material, ensuring that the flashing 7 is strong enough that the flashing 7 is not damaged under the impact of hail if it encounters hail.
In the present embodiment, the exhaust pipe 2 is provided with a plurality of exhaust holes 10 penetrating the exhaust pipe 2.
In detail, after the exhaust pipe 2 is connected with the waterproof board 7, an opening at the upper end of the exhaust pipe 2 is blocked, so that moisture in the water absorbing layer 1 can be evaporated smoothly, a plurality of exhaust holes 10 need to be formed in the exhaust pipe 2, the exhaust holes 10 are circumferentially arranged on the exhaust pipe 2, the diameter of each exhaust hole 10 can be 0.3-3 mm, a large amount of rainwater cannot enter the exhaust pipe 2 when rainwater flies obliquely, the diameter of a raindrop is generally 0.5-5.5 mm, and even if part of rainwater enters the exhaust pipe 2, the rainwater entering the exhaust pipe 2 is less and can be absorbed by the water absorbing layer 1 quickly.
In detail, the diameter of the waterproof plate 7 is larger than that of the exhaust pipe 2, and even if rainwater flies obliquely, the rainwater is not easy to bypass the waterproof plate 7 and enter the exhaust pipe 2.
In the embodiment, a protective cover 11 is further included, and the protective cover 11 is sleeved outside the exhaust pipe 2.
In detail, the exhaust pipe 2 needs to be sealed when extending out of the roof wallboard, if the exhaust pipe 2 is provided with a small sealing device at the joint with the wallboard, some sand and stone on the balcony of the roof easily hit the sealing device, resulting in the sealing performance of the sealing device being affected.
In this embodiment, the protective cover 11 mainly prevents rain and snow from entering the wallboard from the joint of the exhaust pipe 2 and the wallboard, and in addition, the protective cover 11 is matched with the waterproof plate 7 and the exhaust pipe 2 to form a mushroom-like component, so that the aesthetic property is good. The protection cover 11 is also cone-shaped, and rain and snow fall to the protection cover 11 and then directly slide off.
In this embodiment, the exhaust pipe device further includes a sealing ring 12, the sealing ring 12 is disposed at a connection position of the protection cover 11 and the exhaust pipe 2, and the sealing ring 12 is detachably connected to the protection cover 11.
In detail, rubber pads are arranged on the inner side and the lower end of the sealing ring 12, and can reduce gaps between the sealing ring 12 and the exhaust pipe 2 and between the sealing ring 12 and the protective cover 11, so that rain and snow are prevented from entering the protective cover 11 and then entering the wallboard from the joint of the exhaust pipe 2 and the wallboard.
In this embodiment, a plurality of retaining members 14 are also included; the shield 11 is provided with a plurality of connecting rods 13, the connecting rods 13 passing through the packing 12 and being connected with the locking member 14.
In detail, the locking member 14 may be a nut, the connecting rod 13 may be a screw, and the connecting rod 13 is vertically disposed on the upper end surface of the shield 11. A plurality of connecting rods 13 penetrate through the sealing rings 12, and then the locking parts 14 are connected with the connecting rods 13, so that the locking parts 14 or the connecting rods 13 are prevented from being corroded by rain and snow, and waterproof paint can be coated on the surfaces of the connecting rods 13 and the locking parts 14.
Example 2
Referring to fig. 4, the structure of the present embodiment is substantially the same as that of embodiment 1, except that:
in this embodiment, the device further comprises a buckle 15, a snap ring 16 and a base 17; the base 17 is arranged on the protective cover 11, the buckle 15 is arranged on the sealing ring 12, one end of the clamping ring 16 is hinged with the base 17, and the other end of the clamping ring 16 is a free end; the snap ring 16 can be engaged with the snap 15.
In detail, when the sealing ring 12 and the protective cover 11 need to be fixed, only the snap ring 16 needs to be buckled on the buckle 15, and the connection mode of the snap ring 16 and the buckle 15 is simpler than the bolt connection mode, and has higher connection strength and convenient use.
Example 3
Referring to fig. 1, the present embodiment provides an exhaust box, which is substantially the same as embodiment 1, and the main differences between them are:
in this embodiment, the exhaust pipe 2 and the protection cover 11 are integrally formed, that is, the protection cover 11 is hollow, the upper end of the exhaust pipe 2 is communicated with the protection cover 11, the lower end of the exhaust pipe 2 is communicated with the protection cover 11, and the middle of the exhaust pipe 2 is removed.
In this embodiment, the sealing ring 12 is removed, but a sealing device is required at the joint of the protective cover 11 and the wall panel to prevent rainwater from entering the wall panel from the joint of the protective cover 11 and the wall panel. Compared with embodiment 1, the protection casing 11 is installed more conveniently in this embodiment, and the exhaust pipe 2 does not need to be installed on the wallboard first, and then the protection casing 11 is sleeved on the exhaust pipe 2, and finally the waterproof board 7 is installed again, and this embodiment is operated more simply.
In summary, embodiments of the present invention provide an exhaust box:
comprises an exhaust pipe 2 and a water absorption device; the water absorption device is provided with a water absorption layer 1 for absorbing water in the slope finding layer, and one end of the exhaust pipe 2 is communicated with the water absorption layer 1.
The water absorption device can absorb water in the slope finding layer, and the evaporated water is discharged to the outside air through the exhaust pipe 2, so that the waterproof layer is prevented from swelling and cracking.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An exhaust box is characterized by comprising an exhaust pipe and a water absorption device; the water absorption device is provided with a water absorption layer for absorbing water in the slope finding layer, and one end of the exhaust pipe is communicated with the water absorption layer; the water absorption device comprises a box body and a plurality of air inlet pipes communicated with the box body; the box body and the air inlet pipe are both provided with the water absorbing layer, a fluffy layer for absorbing and storing liquid is arranged in the box body, and the fluffy layer is positioned in the water absorbing layer; the exhaust pipe is provided with a plurality of exhaust holes penetrating through the exhaust pipe; the protective cover is sleeved outside the exhaust pipe; the sealing ring is arranged at the joint of the protective cover and the exhaust pipe, and is detachably connected with the protective cover; the clamping device also comprises a buckle, a clamping ring and a base; the base is arranged on the protective cover, the buckle is arranged on the sealing ring, one end of the clamping ring is hinged with the base, and the other end of the clamping ring is a free end; the snap ring can be buckled with the buckle.
2. The exhaust box according to claim 1, wherein any one of the intake pipes is provided with a plurality of intake holes.
3. The vent box of claim 1, further comprising a flashing for blocking rain, the flashing provided with a first connector; the blast pipe is kept away from water absorbing device's one end is equipped with the second connector, first connector with the connection can be dismantled to the second connector.
4. The exhaust cassette of claim 1, further comprising a plurality of retaining members; the protection casing is equipped with a plurality of connecting rods, the connecting rod passes the sealing washer and with the retaining member is connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120942005.1U CN216664771U (en) | 2021-05-04 | 2021-05-04 | Exhaust box |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120942005.1U CN216664771U (en) | 2021-05-04 | 2021-05-04 | Exhaust box |
Publications (1)
Publication Number | Publication Date |
---|---|
CN216664771U true CN216664771U (en) | 2022-06-03 |
Family
ID=81758175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202120942005.1U Expired - Fee Related CN216664771U (en) | 2021-05-04 | 2021-05-04 | Exhaust box |
Country Status (1)
Country | Link |
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CN (1) | CN216664771U (en) |
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2021
- 2021-05-04 CN CN202120942005.1U patent/CN216664771U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220603 |