CN218476861U - Balance cabin for uniformly humidifying artificial board - Google Patents

Balance cabin for uniformly humidifying artificial board Download PDF

Info

Publication number
CN218476861U
CN218476861U CN202222605602.2U CN202222605602U CN218476861U CN 218476861 U CN218476861 U CN 218476861U CN 202222605602 U CN202222605602 U CN 202222605602U CN 218476861 U CN218476861 U CN 218476861U
Authority
CN
China
Prior art keywords
artificial board
wood
atomizing
cabin
cabin body
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
CN202222605602.2U
Other languages
Chinese (zh)
Inventor
叶昌海
张光雨
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.)
Chengdu Green Express Environmental Protection Technology Co Ltd
Original Assignee
Chengdu Green Express Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Green Express Environmental Protection Technology Co Ltd filed Critical Chengdu Green Express Environmental Protection Technology Co Ltd
Priority to CN202222605602.2U priority Critical patent/CN218476861U/en
Application granted granted Critical
Publication of CN218476861U publication Critical patent/CN218476861U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Air Humidification (AREA)

Abstract

The utility model discloses a balance cabin of even humidification to artificial board, including the cabin body, be equipped with the feed inlet that is used for inputing the wood-based plate and the discharge gate that is used for exporting the wood-based plate in the cabin body, the internal grillage that dries in the air that is used for transporting the wood-based plate that is equipped with a plurality of even intervals setting on the grillage that dries in the air, the bracing piece is around the driven in-process of the grillage that dries in the air, convert the wood-based plate into vertical state back along the straight line transportation wood-based plate parallel with ground, it is equipped with at least one atomizing pipe that is used for the input to treat atomized liquid to dry in the air under the grillage, is equipped with the play fog mouth that a plurality of even intervals set up on the bracing piece along the grillage that dries in the air on overlooking the moving direction on the visual angle, and the minimum interval between the bracing piece of per two adjacent play fog mouths is the same. The utility model discloses can evenly supply moisture to each wood-based plate surface in the balance cabin.

Description

Balance cabin for uniformly humidifying artificial board
Technical Field
The utility model relates to an wood-based plate processing technology field, concretely relates to balance cabin to even humidification of wood-based plate.
Background
The existing artificial board formaldehyde removing equipment accelerates the release of formaldehyde in the artificial board under the high temperature condition, and achieves the purpose of purifying the formaldehyde through a series of purification technologies.
As shown in fig. 1, in the conventional balance cabin, a water mist nozzle connected to a humidifier 15 is usually disposed on any one of the side walls of the cabin 1 to humidify the whole cabin. The temperature of the artificial board is high when the artificial board enters the balance cabin from the high-temperature cabin, and a cooling process is carried out in the balance cabin, so that the temperature of air close to the artificial board in the balance cabin is high, the temperature far away from the artificial board is relatively low, the convection of high-temperature and low-temperature air can influence the distribution of water mist, the temperature of the water mist for humidification is not too low, otherwise, the temperature of the artificial board can be suddenly reduced, the water mist can float upwards, a large amount of water mist generated by a humidifier arranged on the top surface or any one side wall of the cabin body can float upwards before contacting with the artificial board in the middle of the cabin body, and the water is not easy to contact with the artificial board for water supplement, on the other hand, the artificial board needs to be transported into the spraying cabin from the high-temperature cabin through the balance cabin, the artificial board is transported into the balance cabin through the drying plate rack disclosed as CN 213513U, so that the artificial board in the balance cabin is in a moving state, and the water supplement effect of the artificial board is stable, and the water mist in the cabin needs to be uniformly contacted with the artificial board.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a balance cabin to the even humidification of artificial board, it can evenly supply moisture to each wood-based plate surface in the balance cabin.
In order to solve the technical problem, the utility model adopts the following scheme:
the utility model provides a balance cabin to even humidification of artificial board, includes the cabin body, is equipped with the feed inlet that is used for the input wood-based plate on the cabin body and is used for exporting the discharge gate of wood-based plate, and the internal grillage that dries in the air that is used for transporting the wood-based plate that dries in the air is equipped with the bracing piece that is used for two sides about the centre gripping wood-based plate that a plurality of even intervals set up on the grillage that dries in the air, and the bracing piece is at the driven in-process of the grillage that dries in the air, with the wood-based plate follow the horizontal state transform to vertical state after along transporting the straight line parallel with ground the wood-based plate, it is equipped with at least one atomizing pipe that is used for the input to treat atomized liquid to dry in the air under the grillage, is equipped with the play fog mouth that a plurality of even intervals set up on the atomizing pipe along the bracing piece in the grillage that dries in the moving direction of overlooking visual angle, and the minimum interval between the bracing piece of every two adjacent play fog mouths is the same. The artificial board drying rack has the advantages that due to the arrangement of the interval size of the fog outlets, when each artificial board passes through the center between two adjacent fog outlets in the process of conveying the artificial boards, the upper surface and the lower surface of each artificial board can be uniformly contacted with water mist sprayed out of the fog outlets, the upper surface and the lower surface of each artificial board can be uniformly humidified, and the water replenishing effect is good.
Furthermore, the atomization tube is arranged in parallel with the moving direction of the support rod on the plate airing frame in the overlooking visual angle of the plate airing frame, and the atomization tube is arranged in the middle of the plate airing frame. The effect of the device is that through the spatial arrangement of the atomizing pipes, as the artificial board is positioned in the middle of the board airing frame during conveying, the atomizing openings on the atomizing pipes are positioned in the middle of the artificial board in the left and right directions, and the water mist sprayed out from the atomizing openings can be uniformly humidified in the left and right directions of the artificial board.
Furthermore, the atomizing pipe has three mutual parallel even interval setting and all locates and dries in the air under the grillage. The humidifying device has the advantages that the width of a common artificial board is far larger than the width of the atomizing pipes, and the effect of uniformly humidifying the artificial board in the left and right directions is further enhanced by symmetrically adding the atomizing pipes.
Furthermore, the fog outlet is arranged upwards, a piezoelectric ceramic piece is arranged on the fog outlet, and micropores communicated with the atomizing pipe are formed in the piezoelectric ceramic piece. The piezoelectric ceramic plate is used for atomizing water in the atomizing pipe, and the atomizing effect is good.
Furthermore, a heating device and an atomized water temperature sensor are arranged on the atomizing pipe, and an outdoor temperature sensor is arranged on the outer wall of the cabin body. The water atomization device has the advantages that the water in the atomization pipe can be heated through the arrangement of the heating device; the temperature of liquid in the atomizing pipe and the temperature outside the cabin can be measured through the arrangement of the temperature sensor outside the atomizing water temperature sensor.
Further, atomizing water temperature sensor locates and closes on the atomizing pipe the entrance of atomizing pipe, and extravehicular temperature sensor locates and closes on the outer wall of cabin body discharge gate department. The atomizing pipe entrance is located to heating device, and the middle section of atomizing pipe is located to the atomizing mouth, and atomizing water temperature sensor locates between heating device and the atomizing mouth. The temperature detection device has the effects that through the arrangement of the atomized water temperature sensor and the extravehicular temperature sensor, the temperature of the water entering the atomized water port and the temperature of the discharge port of the cabin body can be detected respectively, the heating temperature of the heating device is controlled, the temperature of the water in the atomized water pipe is controlled to be slightly higher than the temperature of the discharge port, the artificial board can be slowly cooled in the balance cabin, and the high-temperature artificial board is prevented from deforming due to temperature shock.
Furthermore, the cabin body is in a quadrangular prism shape, and the four inner side walls of the cabin body are respectively provided with a humidity sensor for detecting the humidity in the cabin body. The atomization power of the piezoelectric ceramic piece is controlled according to the humidity detection result of the humidity sensor through the arrangement of the humidity sensor.
Furthermore, a plurality of position sensors used for detecting whether the artificial board is positioned right above the fog outlet are uniformly arranged in the cabin body. The position of the position sensor corresponds to the position of the atomizing opening. The effect of the device is that through the arrangement of the position sensors, when the first artificial board just enters the balance cabin from the high-temperature cabin and the artificial boards received by each position sensor enter a certain position, the piezoelectric ceramic plates at the corresponding positions are started to enable the fog outlets where the piezoelectric ceramic plates are located to spray water fog, so that the first artificial board entering the cabin can be uniformly humidified.
Furthermore, the position sensor adopts a photoelectric sensor and is arranged on the side wall in the cabin body.
Furthermore, the front end and the rear end of the atomization pipe are respectively provided with a stop valve. The effect is that, through the setting of stop valve, the business turn over of the intraductal water of atomizing can be controlled.
The utility model discloses beneficial effect who has:
1. due to the arrangement of the interval size of the fog outlets, when each artificial board passes through the center between two adjacent fog outlets in the process of conveying the artificial boards, the upper surface and the lower surface of each artificial board can be uniformly contacted with water fog sprayed out of the fog outlets, so that the upper surface and the lower surface of each artificial board can be uniformly humidified, and the water replenishing effect is good;
2. due to the arrangement of the atomization pipe space, the artificial board is positioned in the middle of the board airing frame during conveying, so that the atomization port on the atomization pipe is positioned in the middle of the artificial board in the left-right direction, and the water mist sprayed out of the atomization port can be uniformly humidified in the left-right direction of the artificial board;
3. through setting up of atomizing water temperature sensor and extravehicular temperature sensor, can carry out the temperature to entering into the water of atomizing mouth department and the region of cabin body discharge gate department respectively and detect, control heating device's heating temperature, with the temperature control of the water in the atomizing pipe at the temperature that is a little higher than discharge gate department, make the wood-based plate can slowly cool down in the balance cabin, avoid high temperature wood-based plate to produce because of the abrupt temperature drop and warp.
Drawings
FIG. 1 is a side cross-sectional structural schematic view of a prior art surge tank;
FIG. 2 is a front sectional view schematically showing the structure of the surge tank in example 1;
FIG. 3 is a schematic sectional view in a top view of the surge tank in example 1;
FIG. 4 is a cross-sectional view schematically showing the structure of an atomization tube in example 1.
The reference numerals are explained below: 1. a cabin body; 2. a feed inlet; 3. a discharge port; 4. a plate airing frame; 5. a support bar; 6. an atomizing tube; 7. a mist outlet; 8. piezoelectric ceramic plates; 9. micropores; 10. an atomized water temperature sensor; 11. an outboard temperature sensor; 12. a humidity sensor; 13. a position sensor; 14. a stop valve; 15. a humidifier.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "installed," "connected," and "connected" are to be construed 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The utility model provides a balance cabin to even humidification of artificial board, as shown in fig. 2, including the cabin body 1, be equipped with the feed inlet 2 that is used for the input wood-based plate on the cabin body 1 and be used for exporting the discharge gate 3 of wood-based plate, be equipped with the grillage 4 that dries in the air that is used for transporting the wood-based plate in the cabin body 1, dry in the air and encircle the bracing piece 5 that is used for the centre gripping wood-based plate upper and lower two sides that is equipped with a plurality of even intervals setting on the grillage 4, bracing piece 5 is at the driven in-process around the grillage 4 that dries in the air, with the wood-based plate follow the straight line transportation wood-based plate that is parallel with ground after the horizontal state converts into vertical state, it is equipped with at least one and is used for the input to treat atomizing pipe 6 under the grillage 4 to dry in the air, is equipped with the play fog mouth 7 that a plurality of even intervals set up on the atomizing pipe 6 in the moving direction of bracing piece 5 on overlooking visual angle, and the minimum interval between bracing piece 5 is the interval of every two adjacent play fog mouths 7 is the same. The artificial board airing frame has the advantages that due to the arrangement of the interval sizes of the fog outlets 7, when each artificial board passes through the center between two adjacent fog outlets 7 in the process of conveying the artificial boards by the aid of the board airing frame 4, the upper surface and the lower surface of each artificial board can be uniformly contacted with water mist sprayed out of the fog outlets 7, the upper surface and the lower surface of each artificial board can be uniformly humidified, and the water replenishing effect is good.
Specifically, as shown in fig. 3, the atomizing pipe 6 is arranged in parallel with the moving direction of the support rod 5 on the plate airing rack 4 in the top view angle of the plate airing rack 4, and the atomizing pipe 6 is arranged in the middle of the plate airing rack 4. The effect of the device is that through the spatial arrangement of the atomizing pipe 6, as the artificial board is positioned in the middle of the board airing frame 4 during the conveying, the atomizing port on the atomizing pipe 6 is positioned in the middle of the artificial board in the left and right direction, and the water mist sprayed out from the atomizing port can be uniformly humidified in the left and right direction of the artificial board.
Specifically, as shown in fig. 3, the atomizing pipes 6 are parallel to each other and are arranged at equal intervals and are all arranged right below the plate airing frame 4. The effect of the humidifying device is that the width of the common artificial board is far larger than that of the atomizing pipes 6, and the effect of uniformly humidifying the artificial board in the left and right directions is further enhanced by symmetrically adding the atomizing pipes 6.
Specifically, as shown in fig. 4, the mist outlet 7 is arranged upward, the piezoelectric ceramic plate 8 is arranged on the mist outlet 7, and the piezoelectric ceramic plate 8 is provided with micropores 9 communicated with the atomizing pipe 6. The piezoelectric ceramic plate 8 is used for atomizing water in the atomizing pipe 6, and the atomizing effect is good.
Specifically, as shown in fig. 2, a heating device and an atomized water temperature sensor 10 are arranged on the atomizing pipe 6, and an outdoor temperature sensor 11 is arranged on the outer wall of the cabin 1. Heating device is prior art, and the adoption can to the atomizing pipe 6 in water carry out the traditional heating device that heats can, adopt in this embodiment the winding at the atomizing pipe 6 outside the resistance wire can. The atomized water temperature sensor 10 and the cabin outside temperature sensor 11 are both in the prior art, and a traditional temperature sensor is adopted. The function of the device is that the water in the atomizing pipe 6 can be heated by the heating device; the temperature of the liquid in the atomizing pipe 6 and the temperature outside the cabin can be measured by the temperature sensor 11 outside the cabin of the atomizing water temperature sensor 10.
Specifically, as shown in fig. 2, the atomizing water temperature sensor 10 is disposed on the atomizing pipe 6 near the inlet of the atomizing pipe 6, and the extravehicular temperature sensor 11 is disposed on the outer wall of the cabin 1 near the discharge port 3. Heating device locates 6 entrances of atomizing pipe, and the middle section of atomizing pipe 6 is located to the atomizing mouth, and atomizing water temperature sensor 10 locates between heating device and the atomizing mouth. The temperature detection device has the effects that through the arrangement of the atomized water temperature sensor 10 and the extravehicular temperature sensor 11, the temperature of the water entering the atomized water port and the region at the discharge port 3 of the cabin body 1 can be detected respectively, the heating temperature of the heating device is controlled, the temperature of the water in the atomized water pipe 6 is controlled to be slightly higher than that at the discharge port 3, the artificial board can be slowly cooled in the balance cabin, and the high-temperature artificial board is prevented from being deformed due to sudden temperature drop.
Specifically, as shown in fig. 2 and 3, the cabin 1 is quadrangular, and humidity sensors 12 for detecting humidity in the cabin 1 are disposed on four inner side walls of the cabin 1. The humidity sensor 12 is prior art. The function of the device is to control the atomization power of the piezoelectric ceramic plate 8 according to the humidity detection result of the humidity sensor 12 through the arrangement of the humidity sensor 12.
Specifically, as shown in fig. 3, a plurality of position sensors 13 for detecting whether the artificial board is located right above the fog outlet 7 are uniformly arranged in the cabin 1. The position of the position sensor 13 corresponds to the position of the atomizing port. The effect of the device is that through the arrangement of the position sensors 13, when a first artificial board just enters a balance cabin from a high-temperature cabin and the artificial board received by each position sensor 13 enters a certain position, the piezoelectric ceramic pieces 8 at the corresponding positions are started to enable the fog outlets 7 where the piezoelectric ceramic pieces are located to spray water fog, so that the first artificial board entering the cabin body 1 can be uniformly humidified.
Specifically, the position sensor 13 is a photoelectric sensor, and the position sensor 13 is arranged on a side wall in the cabin 1.
Specifically, as shown in fig. 3, the front end and the rear end of the atomization pipe 6 are respectively provided with a stop valve 14. The function of the device is that the inlet and outlet of water in the atomizing pipe 6 can be controlled by the arrangement of the stop valve 14.
The working principle of the embodiment is explained as follows: firstly, the stop valve 14 at the front end of the atomizing pipe 6 is opened, the stop valve 14 at the rear end of the atomizing pipe 6 is closed, the atomizing pipe 6 is filled with water to be atomized and contacts with the bottom of the piezoelectric ceramic plate 8, then the piezoelectric ceramic plate 8 at the corresponding position is started to atomize the water in the atomizing pipe 6 according to the position information of the artificial board transmitted by the position sensor 13, the water mist is discharged to the cabin body 1 through the micropores 9 of the piezoelectric ceramic plate 8 under the board airing frame 4, the water mist sprayed by two adjacent mist outlet ports 7 moves from the direction under the board airing frame 4 and directly contacts with the two opposite surfaces of the artificial board at the corresponding position conveyed on the board airing frame 4, and the water is uniformly supplemented.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a balance cabin to even humidification of artificial board, including the cabin body (1), be equipped with feed inlet (2) that are used for inputing the wood-based plate and discharge gate (3) that are used for exporting the wood-based plate on the cabin body (1), be equipped with the grillage (4) that dries in the air that is used for transporting the wood-based plate in cabin body (1), it is used for about the centre gripping wood-based plate bracing piece (5) that sets up around drying in the air grillage (4) two sides on grillage (4) to dry in the air, bracing piece (5) are around drying in the air grillage (4) driven in-process, convert the wood-based plate from the horizontality to behind the vertical state along the straight line transportation parallel with ground, its characterized in that: at least one atomizing pipe (6) used for inputting liquid to be atomized is arranged under the plate airing frame (4), a plurality of mist outlet openings (7) which are uniformly arranged at intervals are formed in the moving direction of the atomizing pipe (6) along the support rod (5) in the overlooking visual angle of the plate airing frame (4), and the interval between every two adjacent mist outlet openings (7) is the same as the minimum interval between the support rods (5).
2. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: the atomizing pipe (6) is arranged in parallel with the moving direction of the support rod (5) on the plate airing frame (4) in the overlooking visual angle of the plate airing frame (4), and the atomizing pipe (6) is arranged in the middle of the plate airing frame (4).
3. The balancing tank for uniformly humidifying an artificial board according to claim 2, wherein: the atomizing pipes (6) are arranged at three uniform intervals and are all arranged under the plate airing frame (4).
4. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: the fog outlet (7) is arranged upwards, the piezoelectric ceramic piece (8) is arranged on the fog outlet (7), and the piezoelectric ceramic piece (8) is provided with micropores (9) communicated with the atomizing pipe (6).
5. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: the atomizing pipe (6) is provided with a heating device and an atomizing water temperature sensor (10), and the outer wall of the cabin body (1) is provided with an outer cabin temperature sensor (11).
6. A balancing tank for the uniform humidification of artificial boards according to claim 5, wherein: atomizing water temperature sensor (10) are located and are close to the entrance of atomizing pipe (6) on atomizing pipe (6), and extravehicular temperature sensor (11) are located and are close to discharge gate (3) department on cabin body (1) outer wall.
7. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: the cabin body (1) is in a quadrangular prism shape, and the four inner side walls of the cabin body (1) are respectively provided with a humidity sensor (12) for detecting the humidity in the cabin body (1).
8. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: a plurality of position sensors (13) used for detecting whether the artificial board is positioned right above the fog outlet (7) are uniformly arranged in the cabin body (1).
9. The balancing pod according to claim 8, wherein the pod further comprises: the position sensor (13) adopts a photoelectric sensor, and the position sensor (13) is arranged on the side wall in the cabin body (1).
10. The balancing tank for uniformly humidifying an artificial board according to claim 1, wherein: the front end and the rear end of the atomization pipe (6) are respectively provided with a stop valve (14).
CN202222605602.2U 2022-09-30 2022-09-30 Balance cabin for uniformly humidifying artificial board Active CN218476861U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222605602.2U CN218476861U (en) 2022-09-30 2022-09-30 Balance cabin for uniformly humidifying artificial board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222605602.2U CN218476861U (en) 2022-09-30 2022-09-30 Balance cabin for uniformly humidifying artificial board

Publications (1)

Publication Number Publication Date
CN218476861U true CN218476861U (en) 2023-02-14

Family

ID=85168706

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222605602.2U Active CN218476861U (en) 2022-09-30 2022-09-30 Balance cabin for uniformly humidifying artificial board

Country Status (1)

Country Link
CN (1) CN218476861U (en)

Similar Documents

Publication Publication Date Title
CN207881372U (en) A kind of rice drying unit
CN218476861U (en) Balance cabin for uniformly humidifying artificial board
CN206022525U (en) A kind of air humidification device and its air or fuel gas supply system
CN205965445U (en) Automatic supply with ozone generator dry air's device
CN112212627A (en) Drying device is used in woodwork processing
CN100451510C (en) Air flow jetting type material drying machine
CN219579890U (en) High-efficient air supply arrangement and spray drier for spray drier
CN218535003U (en) Do benefit to balance cabin of wood-based plate humidification
CN106129438A (en) A kind of air humidification device
CN218659653U (en) Panel balance cabin with even humidification structure
CN211885424U (en) Spray drying device is used in milk powder processing
CN207493986U (en) A kind of energy-saving and emission-reduction dry type coating machine drying system
CN208375505U (en) Plank humidifier
CN218480858U (en) Continuous drying device
CN208901820U (en) A kind of auto-parts disturbed flow type drying box
CN209310437U (en) Staged biomass power generation fuel particle drying unit
CN209940515U (en) Device for reducing boiler waste water by using flue gas waste heat
CN111420416A (en) Drying equipment for processing silicon dioxide and using method thereof
CN218010753U (en) Multilayer drying room and fire-fighting structure thereof
CN218083240U (en) Balance cabin for supplementing water to artificial board
CN206198720U (en) A kind of spray drying device for producing sea cucumber soft capsule
CN109938387A (en) A kind of device of tobacco redrying
CN215597915U (en) A drying device for producing dry suspending agent of pesticide
CN206867744U (en) A kind of Pressuresprayingdrier hot-air distributor
CN213198123U (en) Automatic water spraying device for concrete curing room

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant