CN211291065U - High-temperature furnace gas side wall position vaporization cooling device - Google Patents
High-temperature furnace gas side wall position vaporization cooling device Download PDFInfo
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- CN211291065U CN211291065U CN202020050290.1U CN202020050290U CN211291065U CN 211291065 U CN211291065 U CN 211291065U CN 202020050290 U CN202020050290 U CN 202020050290U CN 211291065 U CN211291065 U CN 211291065U
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Abstract
The utility model discloses a high temperature furnace gas lateral wall position vaporization cooling device. This high temperature furnace gas lateral wall position vaporization cooling device includes: the furnace comprises a furnace body, atomized water vapor conveying assemblies, an atomizer and a pipe fixing seat, wherein a furnace gas inlet channel and a cooling chamber are arranged inside the furnace body, and the three groups of atomized water vapor conveying assemblies are sequentially arranged on the periphery of the furnace body from bottom to top; the atomized water vapor conveying assembly comprises three conveying pipes, an air inlet joint and three air outlet joints, the three atomizers are respectively arranged on the outer wall of the furnace body, the top end of each atomizer is respectively communicated with the three air outlet joints of the three groups of atomized water vapor conveying assemblies, and the bottom ends of the atomizers extend into the cooling chamber through the nozzle channels; the utility model discloses adopt the setting at 45 degrees angles with the atomizer for it is tangent with the flue gas stream to spout into the air current, and the flue gas also can carry its synchronous downward outflow in vaporization water smoke and can not cause the flue gas backward flow to go into the nozzle mouth, has guaranteed refrigerated effect, promotes the life of atomizer.
Description
Technical Field
The utility model relates to the technical field of industrial equipment, concretely relates to high temperature furnace gas side wall position vaporization cooling device.
Background
In the industrial field, the high-temperature furnace gas at 1500 ℃ in the furnace is quickly cooled usually by spraying atomized water vapor into the furnace, the high-temperature furnace gas can be quickly cooled only after the sprayed mist is highly atomized, if the atomization degree of the mist is not high, larger water drops can cause water drop explosion once entering the furnace gas at 1500 ℃, so that the temperature of the furnace gas flow is not uniformly cooled and the air flow is unstable, and the higher atomization degree of the mist is the key of the cooling mode. At present, in a cooling device for high-temperature furnace gas commonly adopted in the industry, a nozzle for spraying atomized water vapor into a furnace is generally horizontally arranged, so that a backflow phenomenon of the high-temperature furnace gas is often generated at the position of the nozzle, the high-temperature furnace gas is easy to cause the backflow of the high-temperature furnace gas into a nozzle opening of the cooling device while the water mist is vaporized, the cooling effect is influenced, and the service life of the cooling device is shortened. Therefore, it is desirable to provide a vaporization cooling device for a sidewall of a high temperature furnace to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature furnace gas lateral wall position vaporization cooling device to solve current high temperature furnace gas cooling device and produce the palirrhea phenomenon of high temperature furnace gas easily in the nozzle position, high temperature furnace gas causes the high temperature furnace gas to flow back into cooling device's nozzle mouth easily in vaporization water smoke, influences the cooling effect, and reduces cooling device's life's problem.
The utility model provides a high temperature furnace gas lateral wall position vaporization cooling device, include: the device comprises a furnace body, an atomized water vapor conveying assembly, an atomizer and a pipe fixing seat;
the furnace body is in a circular truncated cone shape, a furnace gas inlet channel and a cooling chamber are arranged in the furnace body, the furnace gas inlet channel is arranged above the interior of the furnace body, the cooling chamber is communicated below the furnace gas inlet channel, the inner diameter of the cooling chamber is gradually increased from top to bottom, a spray head channel is arranged on the inner wall below the cooling chamber, the spray head channel penetrates through the inner wall and the outer wall of the furnace body, and an included angle of 45 degrees is formed between the axis of the spray head channel and the bottom of the furnace body;
the number of the atomized water vapor conveying assemblies is three, and the three atomized water vapor conveying assemblies are sequentially arranged on the periphery of the furnace body from bottom to top; each group of atomized water vapor conveying assemblies comprises a conveying pipe, an air inlet joint and three air outlet joints, the conveying pipe is annularly arranged outside the furnace body in a surrounding mode, and the air inlet joints and the three air outlet joints are respectively arranged on the pipe wall of the conveying pipe and communicated with the interior of the conveying pipe; the diameters of the conveying pipes of the three groups of atomized water vapor conveying assemblies are sequentially increased from bottom to top;
the number of the atomizers is three, the three atomizers are respectively arranged on the outer wall of the furnace body, the top end of each atomizer is respectively communicated with three air outlet joints of the three groups of atomized water vapor conveying assemblies, and the bottom ends of the atomizers extend into the cooling chamber through the spray head channel;
the number of the pipe fixing seats is three, the three pipe fixing seats are arranged on the outer wall of the furnace body, and each pipe fixing seat is fixed with the conveying pipes of the three atomization water vapor conveying assemblies respectively.
Optionally, the conveyer pipe is formed by the connection of several sub-conveyer pipes, sub-conveyer pipe flange is provided with to sub-conveyer pipe tip, several sub-conveyer pipes pass through sub-conveyer pipe flange joint encircles.
Optionally, the air inlet joint includes the air inlet joint pipe and set up in the air inlet joint flange of air inlet joint pipe one end, the other end of air inlet joint pipe with the perpendicular intercommunication of pipe wall of conveyer pipe, the air inlet joint pipe level extends, the pipe wall of conveyer pipe still communicates perpendicularly has the joint pipe of giving vent to anger, the joint pipe of giving vent to anger is vertical upwards to extend, give vent to anger connect with the top of the joint pipe of giving vent to anger is connected.
Optionally, the air outlet joint comprises a manual valve joint and an electromagnetic valve joint, the bottom of the manual valve joint is connected with the top of the air outlet joint pipe, a manual valve is arranged on the manual valve joint, the bottom of the electromagnetic valve joint is connected with the top of the manual valve joint through a flange, and an electromagnetic valve is arranged on the electromagnetic valve joint.
Optionally, the pipe fitting fixing base includes furnace body connecting seat, the fixed staple bolt of conveyer pipe and staple bolt fastener, the furnace body connecting seat is fixed in the outer wall of furnace body, the last fixed staple bolt of three conveyer pipe that has set gradually from top to bottom of furnace body connecting seat, three groups the three conveyer pipe of atomizing steam conveying component passes through respectively the staple bolt fastener install in the fixed staple bolt of three conveyer pipe.
Optionally, the atomizer comprises a bottom connecting section, a middle connecting section and a top connecting section;
the bottom connecting section comprises a spray head tail end pipe and a first flange arranged at the top end of the spray head tail end pipe, and the spray head tail end pipe extends into the spray head channel;
the middle connecting section comprises a second flange, a middle pipe, a third flange and a first connecting pipe, the second flange and the third flange are respectively arranged at the bottom and the top of the middle pipe, the first connecting pipe is connected to the side part of the middle pipe, and the second flange is connected with the first flange;
the top linkage segment includes fourth flange, top pipe, second connecting pipe and third connecting pipe, the fourth flange sets up in top socle portion, second connecting pipe connection is in top socle portion, third connecting pipe connection is in top socle portion, the fourth flange is connected with the third flange, first connecting pipe the second connecting pipe and the third connecting pipe respectively with three the three solenoid valve of atomizing steam conveying component connects the intercommunication.
According to the technical scheme provided by the utility model, the utility model provides a high temperature furnace gas lateral wall position vaporization cooling device, include: furnace body, atomizing steam delivery module, atomizer and pipe fitting fixing base, the utility model discloses adopt the setting at 45 degrees angles with the atomizer for it is tangent with the flue gas stream to spout into the air current, and the flue gas also can carry its synchronous downward outflow in vaporization water smoke like this and can not cause the flue gas backward flow to go into the nozzle mouth, has guaranteed refrigerated effect, promotes the life of atomizer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an external structure schematic diagram of a high-temperature furnace gas side wall position vaporization cooling device provided by the utility model.
Fig. 2 is a schematic view of the air inlet joint and the air outlet joint of the high temperature furnace air side wall position vaporization cooling device provided by the present invention.
Fig. 3 is a schematic view of the pipe fitting fixing seat of the high-temperature furnace gas side wall position vaporization cooling device provided by the utility model.
Fig. 4 is a schematic diagram of an atomizer of the high-temperature furnace gas side wall position vaporization cooling device provided by the present invention.
Fig. 5 is a front view of the high temperature furnace gas side wall position vaporization cooling device provided by the present invention.
Fig. 6 is a sectional view taken along a-a of fig. 5.
Illustration of the drawings: 1-furnace body; 2-an atomized water vapor delivery assembly; 3-an atomizer; 4-pipe fitting fixing seat; 11-furnace gas inlet channel; 12-a cooling chamber; 13-a nozzle channel; 21-a conveying pipe; 22-air inlet connection; 23-an air outlet joint; 24-sub delivery pipe flanges; 211-inlet connector pipe; 212-outlet connector pipe; 231-manual valve joint 232-electromagnetic valve joint; 41-furnace body connecting base; 42-a conveying pipe fixing hoop; 43-hoop fasteners; 31-a bottom connecting section; 32-a middle connecting section; 33-a top connecting section; 311-showerhead tip tube; 312 — a first flange; 321-a second flange; 322-a middle tube; 323-a third flange; 324-a first connecting tube; 331-a fourth flange; 332-a top tube; 333-second connecting pipe; 334-third connecting pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1 to fig. 6, a side wall evaporation cooling device for high temperature furnace gas according to an embodiment of the present invention includes: furnace body 1, atomizing steam delivery module 2, atomizer 3 and pipe fitting fixing base 4.
The furnace body 1 is in a circular truncated cone shape, the furnace gas inlet channel 11 and the cooling chamber 12 are arranged in the furnace body 1, the furnace gas inlet channel 11 is arranged above the inside of the furnace body 1, the cooling chamber 12 is communicated below the furnace gas inlet channel 11, and the inner diameter of the cooling chamber 12 is gradually increased from top to bottom. The furnace body 1 forms an insulating layer on the periphery of the cooling chamber 12. The furnace gas inlet channel 11 is used for introducing high-temperature furnace gas.
The inner wall below the cooling chamber 12 is provided with a nozzle channel 13, the nozzle channel 13 penetrates through the inner wall and the outer wall of the furnace body 1, and the axis of the nozzle channel 13 forms a 45-degree included angle with the bottom of the furnace body 1, so that the sprayed air flow is tangent to the flue gas flow of the high-temperature furnace gas, and the flue gas can be carried to synchronously flow downwards while vaporizing water mist and cannot flow back to the nozzle opening of the atomizer 3.
The number of the atomized water vapor conveying assemblies 2 is three, and the three groups of atomized water vapor conveying assemblies 2 are sequentially arranged on the periphery of the furnace body 1 from bottom to top; each group of atomized water vapor conveying assemblies 2 comprises a conveying pipe 21, an air inlet joint 22 and three air outlet joints 23, wherein the conveying pipe 21 is annularly arranged outside the furnace body 1 in a surrounding manner, and the air inlet joint 22 and the three air outlet joints 23 are respectively arranged on the pipe wall of the conveying pipe 21 and communicated with the interior of the conveying pipe 21; the diameters of the conveying pipes 21 of the three groups of atomized water vapor conveying assemblies 2 are increased from bottom to top in sequence. Three sets of atomized water vapor delivery assemblies 2 may be used to provide cooling media at different pressures.
The quantity of atomizer 3 is three, and three atomizer 3 sets up respectively in the outer wall of furnace body 1, and the top of every atomizer 3 communicates with three outlet connector 23 of three atomizing steam delivery module 2 of group respectively, and inside spray head passageway 13 stretched into cooling chamber 12, so that realize rapid cooling to the inside atomizing steam of blowout of cooling chamber 12 in atomizer 3's bottom. The quantity of pipe fitting fixing base 4 is three, and three pipe fitting fixing base 4 sets up in the outer wall of furnace body 1, and every pipe fitting fixing base 4 is fixed with the conveyer pipe 21 of three atomizing steam conveying component 2 of group respectively.
Specifically, the conveying pipe 21 may be formed by connecting a plurality of sub-conveying pipes, the end portions of the sub-conveying pipes are provided with sub-conveying pipe flanges 24, and the plurality of sub-conveying pipes are connected into a ring shape by the sub-conveying pipe flanges 24. The air inlet joint 22 comprises an air inlet joint pipe 211 and an air inlet joint flange arranged at one end of the air inlet joint pipe 211, the other end of the air inlet joint pipe 211 is vertically communicated with the pipe wall of the conveying pipe 21, the air inlet joint pipe 211 horizontally extends, the pipe wall of the conveying pipe 21 is also vertically communicated with an air outlet joint pipe 212, the air outlet joint pipe 212 vertically extends upwards, and the air outlet joint 23 is connected with the top of the air outlet joint pipe 212. The inlet joint pipe 211 is used for connecting a cooling medium source.
Specifically, the air outlet joint 23 comprises a manual valve joint 231 and a solenoid valve joint 232, the bottom of the manual valve joint 231 is connected with the top of the air outlet joint pipe 212, a manual valve is arranged on the manual valve joint 231, the bottom of the solenoid valve joint 232 is connected with the top of the manual valve joint 231 through a flange, and a solenoid valve is arranged on the solenoid valve joint 232. The opening and closing of each group of atomized water vapor conveying assemblies 2 can be controlled by switching the opening and closing of the electromagnetic valves and the manual valves, so that the sources of the cooling media introduced into the atomizer 3 are switched.
Specifically, the pipe fixing seat 4 includes a furnace body connecting seat 41, a conveying pipe fixing hoop 42 and hoop fastening pieces 43, the furnace body connecting seat 41 is fixed on the outer wall of the furnace body 1, the three conveying pipe fixing hoops 42 are sequentially arranged on the furnace body connecting seat 41 from top to bottom, and the three conveying pipes 21 of the three groups of atomized water vapor conveying assemblies 2 are respectively installed in the three conveying pipe fixing hoops 42 through the hoop fastening pieces 43.
Further, the atomizer 3 includes a bottom connecting section 31, a middle connecting section 32, and a top connecting section 33. The bottom connection section 31 includes a head end pipe 311 and a first flange 312 provided at a top end of the head end pipe 311, and the head end pipe 311 extends into the head passage 13. The middle connection section 32 includes a second flange 321, a middle pipe 322, a third flange 323, and a first connection pipe 324, the second flange 321 and the third flange 323 are respectively disposed at the bottom and the top of the middle pipe 322, the first connection pipe 324 is connected to the side of the middle pipe 322, and the second flange 321 is connected to the first flange 312. The top connecting section 33 comprises a fourth flange 331, a top pipe 332, a second connecting pipe 333 and a third connecting pipe 334, the fourth flange 331 is disposed at the bottom of the top pipe 332, the second connecting pipe 333 is connected to the side of the top pipe 332, the third connecting pipe 334 is connected to the top of the top pipe 332, the fourth flange 331 is connected to the third flange 323, and the first connecting pipe 324, the second connecting pipe 333 and the third connecting pipe 334 are respectively communicated with the three solenoid valve joints 232 of the three groups of atomized water vapor conveying assemblies 2.
To sum up, the utility model discloses a high temperature furnace gas lateral wall position vaporization cooling device is through the setting with atomizer 3 adoption 45 degrees angles for it is tangent with the flue gas stream to spout into the air current, and the flue gas also can carry its synchronous downward outflow in vaporization water smoke like this and can not cause the flue gas backward flow to go into the nozzle mouth, has guaranteed refrigerated effect, promotes the life of atomizer. In addition, inert gas can also be selected as the protective gas, and the pressure of the protective gas is greater than that of the vaporized gas, so that the phenomenon of backflow of the flue gas at the position of the nozzle is further avoided.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (6)
1. The utility model provides a high temperature furnace gas lateral wall position vaporization cooling device which characterized in that includes: the device comprises a furnace body (1), an atomized water vapor conveying component (2), an atomizer (3) and a pipe fixing seat (4);
the furnace body (1) is in a circular truncated cone shape, a furnace gas inlet channel (11) and a cooling chamber (12) are arranged inside the furnace body (1), the furnace gas inlet channel (11) is arranged above the inside of the furnace body (1), the cooling chamber (12) is communicated below the furnace gas inlet channel (11), the inner diameter of the cooling chamber (12) is gradually increased from top to bottom, a sprayer channel (13) is arranged on the inner wall below the cooling chamber (12), the sprayer channel (13) penetrates through the inner wall and the outer wall of the furnace body (1), and an included angle of 45 degrees is formed between the axis of the sprayer channel (13) and the bottom of the furnace body (1);
the number of the atomized water vapor conveying assemblies (2) is three, and the three atomized water vapor conveying assemblies (2) are sequentially arranged on the periphery of the furnace body (1) from bottom to top; each group of atomized water vapor conveying assemblies (2) comprises a conveying pipe (21), an air inlet joint (22) and three air outlet joints (23), wherein the conveying pipe (21) is annularly arranged outside the furnace body (1), and the air inlet joint (22) and the three air outlet joints (23) are respectively arranged on the pipe wall of the conveying pipe (21) and communicated with the inside of the conveying pipe (21); the diameters of the conveying pipes (21) of the three groups of atomized water vapor conveying assemblies (2) are sequentially increased from bottom to top;
the number of the atomizers (3) is three, the three atomizers (3) are respectively arranged on the outer wall of the furnace body (1), the top end of each atomizer (3) is respectively communicated with three air outlet joints (23) of the three groups of atomized water vapor conveying assemblies (2), and the bottom ends of the atomizers (3) extend into the cooling chamber (12) through the spray head channels (13);
the number of the pipe fixing seats (4) is three, three the pipe fixing seats (4) are arranged on the outer wall of the furnace body (1), and each pipe fixing seat (4) is fixed with the conveying pipes (21) of the atomized water vapor conveying assemblies (2) in three groups respectively.
2. A high-temperature furnace gas side wall position evaporation cooling device according to claim 1, characterized in that the delivery pipe (21) is formed by connecting a plurality of sub delivery pipes, the end parts of the sub delivery pipes are provided with sub delivery pipe flanges (24), and the sub delivery pipes are connected into a ring shape through the sub delivery pipe flanges (24).
3. The high-temperature furnace gas side wall position evaporation cooling device of claim 2, wherein the gas inlet joint (22) comprises a gas inlet joint pipe (211) and a gas inlet joint flange arranged at one end of the gas inlet joint pipe (211), the other end of the gas inlet joint pipe (211) is vertically communicated with the pipe wall of the conveying pipe (21), the gas inlet joint pipe (211) extends horizontally, the pipe wall of the conveying pipe (21) is also vertically communicated with a gas outlet joint pipe (212), the gas outlet joint pipe (212) extends vertically upwards, and the gas outlet joint (23) is connected with the top of the gas outlet joint pipe (212).
4. The side-wall position evaporative cooling device for high-temperature furnace gas as claimed in claim 3, wherein the gas outlet joint (23) comprises a manual valve joint (231) and an electromagnetic valve joint (232), the bottom of the manual valve joint (231) is connected with the top of the gas outlet joint pipe (212), a manual valve is arranged on the manual valve joint (231), the bottom of the electromagnetic valve joint (232) is connected with the top of the manual valve joint (231) through a flange, and an electromagnetic valve is arranged on the electromagnetic valve joint (232).
5. The high-temperature furnace gas side wall position vaporization cooling device according to claim 4, wherein the pipe fitting fixing seat (4) comprises a furnace body connecting seat (41), a conveying pipe fixing hoop (42) and hoop fasteners (43), the furnace body connecting seat (41) is fixed on the outer wall of the furnace body (1), three conveying pipe fixing hoops (42) are sequentially arranged on the furnace body connecting seat (41) from top to bottom, and three conveying pipes (21) of the three groups of atomized water vapor conveying assemblies (2) are respectively installed in the three conveying pipe fixing hoops (42) through the hoop fasteners (43).
6. A high temperature furnace gas side wall position evaporation cooling device according to claim 5, characterized in that the atomizer (3) comprises a bottom connection section (31), a middle connection section (32) and a top connection section (33);
the bottom connecting section (31) comprises a spray head end pipe (311) and a first flange (312) arranged at the top end of the spray head end pipe (311), and the spray head end pipe (311) extends into the spray head channel (13);
the middle connecting section (32) comprises a second flange (321), a middle pipe (322), a third flange (323) and a first connecting pipe (324), the second flange (321) and the third flange (323) are respectively arranged at the bottom and the top of the middle pipe (322), the first connecting pipe (324) is connected to the side part of the middle pipe (322), and the second flange (321) is connected with the first flange (312);
top linkage segment (33) include fourth flange (331), top pipe (332), second even pipe (333) and third even pipe (334), fourth flange (331) set up in top pipe (332) bottom, second even pipe (333) are connected in top pipe (332) lateral part, third even pipe (334) are connected in top pipe (332) top, fourth flange (331) are connected with third flange (323), first even pipe (324) second even pipe (333) and third even pipe (334) respectively with three solenoid valve joint (232) of three group atomizing steam transport component (2) communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050290.1U CN211291065U (en) | 2020-01-10 | 2020-01-10 | High-temperature furnace gas side wall position vaporization cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050290.1U CN211291065U (en) | 2020-01-10 | 2020-01-10 | High-temperature furnace gas side wall position vaporization cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211291065U true CN211291065U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020050290.1U Expired - Fee Related CN211291065U (en) | 2020-01-10 | 2020-01-10 | High-temperature furnace gas side wall position vaporization cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211291065U (en) |
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2020
- 2020-01-10 CN CN202020050290.1U patent/CN211291065U/en not_active Expired - Fee Related
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Granted publication date: 20200818 Termination date: 20210110 |