CN113028830A - Explosion-proof protection device - Google Patents

Explosion-proof protection device Download PDF

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Publication number
CN113028830A
CN113028830A CN202110343968.4A CN202110343968A CN113028830A CN 113028830 A CN113028830 A CN 113028830A CN 202110343968 A CN202110343968 A CN 202110343968A CN 113028830 A CN113028830 A CN 113028830A
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CN
China
Prior art keywords
valve
pipe
water
pipeline
protection device
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Granted
Application number
CN202110343968.4A
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Chinese (zh)
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CN113028830B (en
Inventor
潘志成
潘欣欣
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Shaoguan Gemei Machinery Co Ltd
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Shaoguan Gemei Machinery Co Ltd
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Priority to CN202110343968.4A priority Critical patent/CN113028830B/en
Publication of CN113028830A publication Critical patent/CN113028830A/en
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Publication of CN113028830B publication Critical patent/CN113028830B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/14—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/20—Arrangement of controlling, monitoring, alarm or like devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F27B2014/045—Vacuum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The invention provides an explosion-proof protection device, which comprises: a pipeline surrounding the intermediate frequency furnace; the first end of the first pipe is communicated with a water supply container, and the second end of the first pipe is connected with the first end of the pipeline; one end of the second pipe is connected with the second end of the pipeline, and the second end of the second pipe is used for outputting water in the pipeline; the temperature sensor is arranged on the intermediate frequency furnace and used for detecting the furnace body temperature of the intermediate frequency furnace; a first valve disposed on the second tube; a first end of the third pipe is communicated with the first pipe; the water pumping device is connected with the second end of the third pipe; and the controller is electrically connected with the temperature sensor, the first valve and the water pumping device.

Description

Explosion-proof protection device
Technical Field
The invention relates to the technical field of intelligent protection, in particular to an explosion-proof protection device.
Background
The intermediate frequency furnace is a power supply device for converting power frequency 50HZ alternating current into intermediate frequency (more than 300HZ to 1000HZ), converts three-phase power frequency alternating current into direct current after rectification, converts the direct current into adjustable intermediate frequency current, supplies the intermediate frequency alternating current flowing through a capacitor and an induction coil, generates high-density magnetic lines in the induction coil, cuts metal materials contained in the induction coil, and generates large eddy current in the metal materials.
The intermediate frequency smelting furnace is because the molten iron temperature is high in the use, the occasionally molten iron punctures the furnace body accident, because of the furnace body outside around there being induction heating pressurization water pipeline, when wading and leaking the high temperature molten iron and fusing the pipeline, if not in time stop the water supply and absorb away the interior ponding of pipeline, the high temperature molten iron makes water expand rapidly and produces the explosion, causes casualties and loss of property, and the potential safety hazard is high.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
in the prior art, when leakage-related high-temperature molten iron is melted through a pipeline, if water supply is not stopped in time and accumulated water in the pipeline is sucked away, the high-temperature molten iron enables the water to rapidly expand to generate explosion, so that casualties and property loss are caused, and potential safety hazards are extremely high.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an explosion protection device, which is used to solve the technical problems of the prior art that when leaked high-temperature molten iron is melted through a pipeline, if the water supply is not stopped in time and the accumulated water in the pipeline is sucked away, the high-temperature molten iron causes the water to rapidly expand and explode, which causes casualties and property loss, and the potential safety hazard is high.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
this embodiment provides an explosion-proof protection device, states explosion-proof protection device and includes:
a pipeline surrounding the intermediate frequency furnace;
the first end of the first pipe is communicated with a water supply container, and the second end of the first pipe is connected with the first end of the pipeline;
one end of the second pipe is connected with the second end of the pipeline, and the second end of the second pipe is used for outputting water in the pipeline;
the temperature sensor is arranged on the intermediate frequency furnace and used for detecting the furnace body temperature of the intermediate frequency furnace;
a first valve disposed on the second tube;
a first end of the third pipe is communicated with the first pipe;
the water pumping device is connected with the second end of the third pipe;
the controller is electrically connected with the temperature sensor, the first valve and the water pumping device; the controller is used for judging whether the furnace body temperature measured by the temperature sensor is greater than a preset temperature or not, and when the furnace body temperature is greater than the preset temperature, the first valve is closed and the water pumping device is started to pump the water in the pipeline.
Furthermore, the temperature sensors are multiple, the controller judges whether the furnace body temperature measured by any one of the temperature sensors is greater than a preset temperature, and when the furnace body temperature is greater than the preset temperature, the first valve is closed and the water pumping device is started to pump the water in the pipeline.
Further, a plurality of the temperature sensors are respectively arranged on the periphery of the intermediate frequency furnace.
Further, the explosion-proof protection device still includes:
a second valve disposed on the second tube.
Further, the second valve is a three-way valve, and the third pipe is connected with the second valve;
when the second valve is in the first position, water flows out of the pipeline through the second end of the second pipe;
when the second valve is positioned at the second station, water flows into the third pipe from the pipeline;
when the second valve is in the third position, water is blocked within the second valve.
Further, the first valve is a three-way valve, and the first valve is connected with the third pipe;
when the first valve is positioned at a first station, water flows into the pipeline from the water supply container through the first pipe;
when the first valve is positioned at the second station, water flows into the third pipe from the pipeline;
when the first valve is in the third position, water is blocked within the first valve.
Further, the explosion-proof protection device includes:
and the alarm device is electrically connected with the controller and is used for sending an alarm signal when receiving the alarm information of the controller.
Further, the water pumping device comprises;
a vacuum storage tank in communication with the third pipe;
and the vacuum pump is communicated with the vacuum storage tank.
Further, the explosion-proof protection device includes:
a third valve disposed on the vacuum storage tank, the third valve being configured to discharge water in the vacuum storage tank.
Further, the water pumping device comprises;
a water pump disposed on the first pipe.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
an embodiment of the present invention provides an explosion-proof protection apparatus, including: a pipeline surrounding the intermediate frequency furnace; the first end of the first pipe is communicated with a water supply container, and the second end of the first pipe is connected with the first end of the pipeline; one end of the second pipe is connected with the second end of the pipeline, and the second end of the second pipe is used for outputting water in the pipeline; the temperature sensor is arranged on the intermediate frequency furnace and used for detecting the furnace body temperature of the intermediate frequency furnace; a first valve disposed on the second tube; a first end of the third pipe is communicated with the first pipe; the water pumping device is connected with the second end of the third pipe; the controller is electrically connected with the temperature sensor, the first valve and the water pumping device; the controller is used for judging whether the furnace body temperature measured by the temperature sensor is greater than a preset temperature or not, and when the furnace body temperature is greater than the preset temperature, the first valve is closed and the water pumping device is started to pump the water in the pipeline.
In the explosion-proof protection device of this embodiment, the controller determines whether the furnace body of the intermediate frequency furnace is abnormal, that is, whether leakage occurs, according to a comparison between the temperature measured by the temperature sensor and a preset temperature, and when the furnace body temperature is higher than the preset temperature and the current furnace body leakage is determined, the first valve is closed and the water pumping device is started to pump the water in the pipeline, the water supply is cut off by closing the first valve, and the water pumping device is adopted to pump water simultaneously to pump the water staying in the pipeline instantly, so as to avoid the problem of explosion caused by the mixing of the water and the molten iron, thereby effectively solving the problems of casualties and property loss caused by the explosion caused by the rapid expansion of the water due to the high-temperature molten iron when the leaked high-temperature molten iron penetrates the pipeline without stopping the water supply and sucking away the accumulated water in the pipeline in time, the potential safety hazard is extremely technical problem.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an explosion-proof protection device for the lateral direction of a radius, which is provided by an embodiment of the invention.
Wherein:
1. an intermediate frequency furnace; 2. a temperature sensor; 3. a pipeline; 4. a first tube; 5. a second tube; 6. a second valve; 7. a first valve; 8. a third tube; 9. a water pumping device; 91. a vacuum storage tank; 92. a vacuum pump; 10. a water pump; 11. a controller; 12. a third valve; 13. and an alarm device.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an explosion-proof protection device according to an embodiment of the present invention.
This embodiment provides an explosion-proof protection device, explosion-proof protection device includes:
a pipeline 3 surrounding the intermediate frequency furnace 1;
a first pipe 4, wherein a first end of the first pipe 4 is communicated with a water supply container, and a second end of the first pipe 4 is connected with a first end of the pipeline 3;
a second pipe, one end of which is connected with the second end of the pipeline 3, and the second end of which is used for outputting the water in the pipeline 3;
the temperature sensor 2 is arranged on the intermediate frequency furnace 1 and used for detecting the furnace body temperature of the intermediate frequency furnace 1;
a first valve 7, said first valve 7 being disposed on said second tube;
a third pipe 8, wherein a first end of the third pipe 8 is communicated with the first pipe 4;
a water pumping device 9, wherein the water pumping device 9 is connected with the second end of the third pipe 8;
the controller 11 is electrically connected with the temperature sensor 2, the first valve 7 and the water pumping device 9; the controller 11 is configured to determine whether the furnace body temperature measured by the temperature sensor 2 is greater than a preset temperature, and when the furnace body temperature is greater than the preset temperature, close the first valve 7 and start the water pumping device 9 to pump water in the pipeline 3.
In the explosion-proof protection device of this embodiment, the controller 11 compares the temperature measured by the temperature sensor 2 with a preset temperature to determine whether the furnace body of the intermediate frequency furnace 1 is abnormal, that is, whether leakage occurs, when the furnace body temperature is higher than the preset temperature and the current furnace body leakage occurs, the first valve 7 is closed and the water pumping device 9 is started to pump the water in the pipeline 3, the first valve 7 is closed to cut off the water supply, and the water pumping device 9 is adopted to pump water simultaneously to instantaneously pump away the water staying in the pipeline 3, thereby avoiding the problem of explosion caused by mixing of water and molten iron, and further effectively solving the problem that when the leaked high-temperature molten iron penetrates through the pipeline 3, if the water supply and the water accumulated in the pipeline 3 are not stopped in time, the high-temperature molten iron rapidly expands and explodes, causing casualties and property loss and great potential safety hazard.
Further, in order to more accurately determine whether the furnace body of the intermediate frequency furnace 1 is involved with leakage, the temperature sensors 2 are multiple, the controller 11 determines whether the furnace body temperature measured by any one of the temperature sensors 2 is greater than a preset temperature, and when the furnace body temperature is greater than the preset temperature, the first valve 7 is closed and the water pumping device 9 is started to pump the water in the pipeline 3. The temperature sensors 2 can accurately detect whether the intermediate frequency furnace 1 is involved in leakage.
Specifically, the plurality of temperature sensors 2 are respectively disposed on the outer periphery of the intermediate frequency furnace 1. In this embodiment, 12 temperature sensors 2 are arranged on the periphery of the intermediate frequency furnace 1, and can measure each part of the furnace body of the intermediate frequency furnace 1, and when the temperature detected by the temperature sensor 2 at any position is abnormal, it can be determined that there is a risk of leakage at the position, and the first valve 7 is closed and the water pumping device 9 is started to pump the water in the pipeline 3.
Further, the explosion-proof protection device still includes:
a second valve 6, said second valve 6 being arranged on said second pipe. The method specifically comprises the following steps: the second valve 6 is a three-way valve, and the third pipe 8 is connected with the second valve 6;
when the second valve 6 is in the first position, water flows out of the pipe 3 through the second end of the second pipe;
when the second valve 6 is in the second position, water flows from the pipe 3 into the third pipe 8;
when the second valve 6 is in the third position, water is blocked in the second valve 6.
Switch of first station, second station and third station is carried out through controller 11 direct control second valve 6, can effectual fast switch.
Further, the first valve 7 is a three-way valve, and the first valve 7 is connected with the third pipe 8;
when the first valve 7 is in the first position, water flows from the water supply container through the first pipe 4 into the pipe 3;
when the first valve 7 is in the second position, water flows from the pipe 3 into the third pipe 8;
when the first valve 7 is in the third position, water is blocked in the first valve 7.
The first valve 7 is also a three-way valve and can be rapidly switched to a required station as required, so that the state of pumping water to the pumping device 9 can be rapidly adjusted.
Further, the explosion-proof protection device includes:
and the alarm device 13 is electrically connected with the controller 11 and used for sending an alarm signal when receiving the alarm information of the controller 11.
When the controller 11 judges to obtain when the furnace body temperature is greater than when presetting the temperature, send alarm information to alarm device 13 in, alarm device 13 includes bee calling organ and alarm lamp, sends through bee calling organ and reminds sound, reminds the staff through the alarm lamp flashing simultaneously.
Further, the water pumping device 9 comprises;
a vacuum storage tank 91, said vacuum storage tank 91 being in communication with said third pipe 8;
a vacuum pump 92, said vacuum pump 92 being in communication with said vacuum storage tank 91.
The water in the pipeline 3 can be extracted from the vacuum storage tank 91 and the vacuum pump 92, so that the pipeline 3 is in a vacuum state, and the problem of explosion caused by contact between molten iron and water when the furnace body of the intermediate frequency furnace 1 is involved in leakage is further avoided.
Further, the explosion-proof protection device includes:
and a third valve 12, wherein the third valve 12 is disposed on the vacuum storage tank 91, and the third valve 12 is used for discharging water in the vacuum storage tank 91.
The third valve 12 is for keeping the vacuum state in the vacuum storage tank 91, and for discharging water from the third valve 12, it is convenient to use.
And a fourth valve is arranged on the third pipe 8 and used for controlling the on-off of water in the third pipe 8.
Further, the water pumping device 9 comprises;
and the water pump 10 is arranged on the first pipe 4, and the water pump 10 is arranged on the first pipe 4.
The water pump 10 enables water in the water supply container to be output onto the pipe 3 so that there can be a flow of water in the pipe 3.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An explosion-proof protection device, characterized in that, explosion-proof protection device includes:
a pipeline surrounding the intermediate frequency furnace;
the first end of the first pipe is communicated with a water supply container, and the second end of the first pipe is connected with the first end of the pipeline;
one end of the second pipe is connected with the second end of the pipeline, and the second end of the second pipe is used for outputting water in the pipeline;
the temperature sensor is arranged on the intermediate frequency furnace and used for detecting the furnace body temperature of the intermediate frequency furnace;
a first valve disposed on the second tube;
a first end of the third pipe is communicated with the first pipe;
the water pumping device is connected with the second end of the third pipe;
the controller is electrically connected with the temperature sensor, the first valve and the water pumping device; the controller is used for judging whether the furnace body temperature measured by the temperature sensor is greater than a preset temperature or not, and when the furnace body temperature is greater than the preset temperature, the first valve is closed and the water pumping device is started to pump the water in the pipeline.
2. The explosion-proof protection device of claim 1, wherein there are a plurality of temperature sensors, the controller determines whether the furnace body temperature measured by any one of the temperature sensors is greater than a preset temperature, and when the furnace body temperature is greater than the preset temperature, the first valve is closed and the water pumping device is started to pump the water in the pipeline.
3. The explosion proof protection device of claim 2 wherein a plurality of said temperature sensors are respectively disposed on the outer periphery of said intermediate frequency furnace.
4. The explosion protection device of claim 1, further comprising:
a second valve disposed on the second tube.
5. The explosion protection device of claim 4, wherein the second valve is a three-way valve, and the third pipe is connected to the second valve;
when the second valve is in the first position, water flows out of the pipeline through the second end of the second pipe;
when the second valve is positioned at the second station, water flows into the third pipe from the pipeline;
when the second valve is in the third position, water is blocked within the second valve.
6. The explosion protection device of claim 1, wherein the first valve is a three-way valve, the first valve being connected to the third pipe;
when the first valve is positioned at a first station, water flows into the pipeline from the water supply container through the first pipe;
when the first valve is positioned at the second station, water flows into the third pipe from the pipeline;
when the first valve is in the third position, water is blocked within the first valve.
7. The explosion protection device of claim 1, comprising:
and the alarm device is electrically connected with the controller and is used for sending an alarm signal when receiving the alarm information of the controller.
8. The explosion protection device of claim 1, wherein said means for pumping comprises;
a vacuum storage tank in communication with the third section of the third pipe;
and the vacuum pump is communicated with the vacuum storage tank.
9. The explosion protection device of claim 8, comprising:
a third valve disposed on the vacuum storage tank, the third valve being configured to discharge water in the vacuum storage tank.
10. The explosion protection device of claim 1, wherein said means for pumping comprises;
a water pump disposed on the first pipe.
CN202110343968.4A 2021-03-30 2021-03-30 Explosion-proof protection device Active CN113028830B (en)

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Application Number Priority Date Filing Date Title
CN202110343968.4A CN113028830B (en) 2021-03-30 2021-03-30 Explosion-proof protection device

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Application Number Priority Date Filing Date Title
CN202110343968.4A CN113028830B (en) 2021-03-30 2021-03-30 Explosion-proof protection device

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CN113028830B CN113028830B (en) 2022-06-21

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261262A1 (en) * 2014-09-10 2017-09-14 China Aluminum International Engineering Corporation Limited Pot Furnace for Calcining Petroleum Coke at Low Temperature
CN207365723U (en) * 2017-09-14 2018-05-15 绍兴隆达机械科技有限公司 A kind of middle frequency furnace water-cooling system
CN208012364U (en) * 2018-01-22 2018-10-26 丽水遂智科技咨询有限公司 A kind of efficient intermediate frequency furnace
CN208187635U (en) * 2018-04-24 2018-12-04 邹平宏发铝业科技有限公司 A kind of warning device leaked for monitoring aluminum water
CN208635573U (en) * 2018-01-25 2019-03-22 株洲创林合金有限责任公司 A kind of alloy melting intermediate frequency furnace cooling circulating water system device
CN110793334A (en) * 2018-08-01 2020-02-14 大冶全胜模具材料有限公司 Cooling system of intermediate frequency furnace
CN210292803U (en) * 2019-06-29 2020-04-10 山西古冶鑫盛铸造股份有限公司 Cooling device of medium-frequency electric furnace
CN212720839U (en) * 2020-03-31 2021-03-16 河南东普热能科技有限公司 Leakage alarm device for runner brick

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261262A1 (en) * 2014-09-10 2017-09-14 China Aluminum International Engineering Corporation Limited Pot Furnace for Calcining Petroleum Coke at Low Temperature
CN207365723U (en) * 2017-09-14 2018-05-15 绍兴隆达机械科技有限公司 A kind of middle frequency furnace water-cooling system
CN208012364U (en) * 2018-01-22 2018-10-26 丽水遂智科技咨询有限公司 A kind of efficient intermediate frequency furnace
CN208635573U (en) * 2018-01-25 2019-03-22 株洲创林合金有限责任公司 A kind of alloy melting intermediate frequency furnace cooling circulating water system device
CN208187635U (en) * 2018-04-24 2018-12-04 邹平宏发铝业科技有限公司 A kind of warning device leaked for monitoring aluminum water
CN110793334A (en) * 2018-08-01 2020-02-14 大冶全胜模具材料有限公司 Cooling system of intermediate frequency furnace
CN210292803U (en) * 2019-06-29 2020-04-10 山西古冶鑫盛铸造股份有限公司 Cooling device of medium-frequency electric furnace
CN212720839U (en) * 2020-03-31 2021-03-16 河南东普热能科技有限公司 Leakage alarm device for runner brick

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Denomination of invention: An explosion-proof protection device

Effective date of registration: 20230825

Granted publication date: 20220621

Pledgee: Agricultural Bank of China Limited Shaoguan Qujiang Branch

Pledgor: Shaoguan gemei Machinery Co.,Ltd.

Registration number: Y2023980053827