CN117704385A - Portable abandonment plant burns device - Google Patents

Portable abandonment plant burns device Download PDF

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Publication number
CN117704385A
CN117704385A CN202311448328.5A CN202311448328A CN117704385A CN 117704385 A CN117704385 A CN 117704385A CN 202311448328 A CN202311448328 A CN 202311448328A CN 117704385 A CN117704385 A CN 117704385A
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CN
China
Prior art keywords
crushing
incinerator
waste
box
combustion
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Pending
Application number
CN202311448328.5A
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Chinese (zh)
Inventor
于正河
徐国辉
李诠娜
王瑜
荣靓赛
阮人杰
郭倩林
马文静
刘学
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Qingdao University
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Qingdao University
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Filing date
Publication date
Application filed by Qingdao University filed Critical Qingdao University
Priority to CN202311448328.5A priority Critical patent/CN117704385A/en
Publication of CN117704385A publication Critical patent/CN117704385A/en
Pending legal-status Critical Current

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Abstract

The utility model belongs to the technical field of waste plant treatment, and relates to a movable waste plant incineration device, which mainly comprises devices such as crushing, incineration, waste gas treatment, liquefied gas combustion supporting and the like, wherein a feed hopper, a crushing box, an incinerator and a slag hole are mutually communicated, fixedly welded and communicated; the crushing screw shaft and the crushing blade are arranged in the crushing box, the crushing blade is fixed on the crushing screw shaft, and the crushing screw shaft is respectively connected with the crushing motor and the crushing box through bearings; a screen mesh of a reinforcing bar structure for screening ash is arranged between the incinerator and the slag hole; the liquefied gas tank is arranged on the upper wall of the bearing mounting plate and is positioned on the left side of the incinerator; the igniter is arranged in the incinerator to cooperatively incinerate waste plants, ash is scattered on the required ground and buried under the ground to increase the fertilizer retaining capacity of soil, so that the fertility of the soil is improved, and the agricultural development assistance is realized; the novel energy-saving environment-friendly water heater is simple in integral structure, scientific and reasonable in design, flexible and convenient to use and transport, high in raw material utilization value, energy-saving and environment-friendly in application.

Description

Portable abandonment plant burns device
Technical field:
the utility model belongs to the technical field of waste plant treatment, and relates to a movable waste plant incineration device which is used for field incineration of wastes such as plant straws and the like in plant planting occasions such as forest areas and agriculture, and the like, so that plants are changed into dust fertilizer and returned to soil.
The background technology is as follows:
the traditional waste plant treatment method has a certain limitation, and the most common treatment mode at present is to use open-air incineration or field centralized placement to naturally rot in vast rural areas, but the methods have the problems of low efficiency, secondary pollution and the like, and waste energy resources to a certain extent. The existing few waste plant combustion devices need to intensively post-treat the field waste plants before operation, which leads to waste of a great deal of manpower and material resources.
In the prior art, chinese patent CN202022187587.5 discloses an agricultural straw incinerator, which comprises a feed hopper, wherein the lower end of the feed hopper is fixedly connected with a crushing cavity, the front end of the crushing cavity is fixedly connected with a support plate, the upper end of the support plate is fixedly connected with a motor, the rear end of the motor is fixedly connected with a driving wheel, the rear end of the driving wheel is fixedly connected with a crushing cutter, and the driving wheel is meshed with a driven wheel; a sliding plate is connected in the sliding groove in a sliding way, and a handle III is fixedly connected at the side end of the sliding plate; the lower end of the incineration cavity is fixedly connected with a first filter screen, the lower end of the filter screen is provided with an ash collecting cavity, a first guide block is fixedly connected inside the ash collecting cavity, a storage box is connected inside the first guide block in a sliding manner, and a second handle is fixedly connected to the side end of the storage box; the inside of the sinking cavity is fixedly connected with a water pump, the side end of the water pump is fixedly connected with a water pipe, and the lower end of the water pipe is fixedly connected with a spray head; the utility model is characterized in that the structure is simple, and ash produced by straw combustion can be treated; but the use and operation are inconvenient, and the smoke pollution generated in the incineration process is relatively large.
The utility model discloses an environment-friendly straw incineration device in the field of straw incineration, which comprises a crushing box, wherein two sides of the top of the crushing box are provided with feed inlets, the top of the crushing box is fixedly connected with a motor between the two feed inlets, and the output end of the motor is fixedly connected with a rotary cutter; however, the device has higher running cost and limited use field, and is not beneficial to wide popularization and application.
Chinese patent CN202221532597.0 discloses an environmental protection device for incinerating crop straw, including bearing mounting panel, processing case, purifying box, feed inlet, observation window, crushing subassembly, burn subassembly, purification subassembly and control cabinet, belong to environmental protection equipment technical field, through setting up crushing subassembly and screening part, improved straw and incinerated the work efficiency of handling, reduced straw and incinerated incomplete possibility, through setting up the nozzle that can change the direction for the flue gas is the contact of a larger area purifies liquid, has improved environmental protection device's use experience.
However, the above devices in the prior art are inconvenient to operate, have complex overall structure, require water resources in use, cannot move between different farmlands, and are not beneficial to realizing comprehensive and full utilization of various resources.
The utility model comprises the following steps:
the utility model aims to overcome the defects of the prior art, and seeks to design and provide a movable waste plant incineration device which can be used in different farmlands according to the needs, so as to realize the full utilization of resources, and organic matters in waste are decomposed into waste gas and ash slag by efficiently incinerating waste sundries, vegetation, plant dry straws and the like in rural areas, wherein the ash slag contains rich mineral substances and nutrients and is scattered in the fields for soil improvement and crop growth.
In order to achieve the above object, the present utility model provides a mobile waste plant incineration apparatus comprising: the device comprises a feed hopper, a crushing box, a crushing blade, a crushing motor, a fixed plate, an incinerator, a screen, an igniter, a gas transmission pipeline, a liquefied gas tank, a bearing mounting plate, wheels, a slag hole, a combustion-supporting fan, a smoke exhaust pipe, a handle, a waste gas treatment box, an activated carbon adsorption net, a chimney and a crushing screw shaft; the device is also divided into a crushing device, an incineration device, an exhaust gas treatment device and a liquefied gas combustion-supporting device according to the functional structure; the upper wall of the left part of the bearing mounting plate of the metal plate type structure is sequentially and fixedly provided with a feed hopper for throwing plant wastes, a crushing box for crushing the waste plants, an incinerator for incinerating the waste plants and a slag hole for discharging ashes from top to bottom; the feeding hopper, the crushing box, the incinerator and the slag hole are mutually communicated, fixedly welded and communicated, the incinerator is fixedly arranged on the upper wall of the bearing mounting plate through a threaded structure, and the slag hole fixing pipe is communicated with the center of the left half part of the bearing mounting plate; the three-phase asynchronous crushing motor for providing crushing power is arranged on the left side of the crushing box, the lower part of the three-phase asynchronous crushing motor is provided with a fixing plate for supporting, the fixing plate is horizontally fixed on the left outer side of the crushing box of the metal square shell structure through a threaded structure, the crushing motor is connected with the crushing blade through a crushing screw shaft, the crushing blade is driven to rotate to crush wastes, the crushing screw shaft and the crushing blade are arranged in the crushing box, the crushing blade is fixed on the crushing screw shaft through screws, the crushing screw shaft is respectively connected with the crushing motor and the crushing box through bearings, and a screen mesh of a reinforcing bar structure for screening ashes is arranged between the incinerator and a slag hole through welding; the liquefied gas tank is arranged on the upper wall of the bearing mounting plate through screws and is positioned at the left side of the incinerator; the gas pipeline is connected with the liquefied gas tank and the igniter through the threaded valve, penetrates through the left side wall of the incinerator of the metal square shell structure, and the igniter is arranged in the incinerator to burn waste plants cooperatively; the combustion-supporting fan is arranged on the upper wall of the bearing mounting plate through a thread structure and is positioned on the right side of the incinerator, and an air outlet of the combustion-supporting fan penetrates through the right side wall of the incinerator so as to provide sufficient oxygen for combustion; the exhaust gas treatment box is arranged on the upper wall of the right part of the bearing mounting plate through a thread structure, and two ends of the smoke exhaust pipe respectively penetrate through the right side wall of the incinerator and the left side wall of the exhaust gas treatment box; the activated carbon adsorption net is embedded in the waste gas treatment box, and a chimney is arranged at the top of the waste gas treatment box in a communication manner; the handle is welded on the upper wall of the right part of the bearing mounting plate and is positioned on the right side of the waste gas treatment box, and the specific structural form of the top of the handle for controlling the running track of the rear wheels is selected as concave-convex curved shape, square shape or oval shape according to actual needs, so that an operator can conveniently hold the handle tightly by hand, the running direction of the whole device is properly adjusted, and ash is scattered on the required ground and is beneficial to being buried under the ground; the waste plant incineration device is integrally fixed on a platform with a loading type flat plate structure formed by combining wheels and a bearing mounting plate, and the concrete form of the wheels is hollow with a portable structure according to actual needs.
The crushing device is used for effectively crushing various rural waste plants and converting the rural waste plants into small particles which are easy to process; a crushing screw shaft is arranged in a crushing box, a screw blade is arranged on the crushing screw shaft, a fixed plate is arranged on the outer wall of the crushing box, the upper end of the fixed plate is fixedly connected with a crushing motor, and the crushing motor is connected with the crushing screw shaft.
The incinerator according to the present utility model is a general incinerator body for efficiently converting crushed waste plants into ashes, and can be directly introduced into the ground for use.
The utility model relates to a liquefied gas combustion-supporting device which is used for providing high-energy fuel and ensuring quick starting of combustion, and comprises a liquefied gas tank, a gas pipeline and an igniter, wherein the upper end of the liquefied gas tank is connected with the left end of the gas pipeline; the gas pipeline rightwards enters the incinerator, an igniter is fixedly arranged at the right end of the gas pipeline, and the igniter is positioned on the inner side wall of the incinerator.
The combustion-supporting fan is used for increasing oxygen supply in the combustion process, so that a more sufficient and efficient combustion process is realized, the combustion-supporting fan is arranged on the upper wall of the bearing mounting plate, and an air outlet of the combustion-supporting fan is communicated with the side wall of the incinerator to send air into the incinerator.
The waste gas treatment device is used for effectively filtering and purifying waste gas generated after incineration, and harmful substances and particulate matters waste gas components can be effectively removed, so that adverse effects on the surrounding environment are reduced; the waste gas treatment device comprises a waste gas treatment box, an activated carbon adsorption net, a smoke exhaust pipe and a chimney.
The smoke exhaust pipe is arranged on the side face of the waste gas treatment box, the right end of the smoke exhaust pipe is communicated with the waste gas treatment box, the left end of the smoke exhaust pipe is communicated with the incinerator, and the chimney is arranged at the top of the waste gas treatment box. The arrangement of the hollow slag hole enables ash to be directly sowed into the field, so that nutrients are provided for soil, and recycling of resources is realized.
The whole device is fixed on a loading platform combined by the wheels and the bearing mounting plates, the wheels are portable, and can rapidly move among different farmlands so as to adapt to waste treatment requirements of different places, and the equipment and the parts cooperate with each other, so that the waste plant treatment efficiency is improved, and the environmental pollution is reduced.
Compared with the prior art, the utility model has the beneficial effects that: firstly, the flexibility of this portable device has given important advantage for it, can remove between different farmland according to actual need, can realize the utilization of waste resources's the maximum degree, and its high adaptability makes rural area can carry out reasonable distribution according to waste plant output and processing demand, ensures that the resource can fully rationally be used, has avoided unnecessary wasting of resources. Secondly, the device also has the capability of directly broadcasting ash, and the ash generated in the incineration process is properly treated to be converted into high-quality fertilizer, so that the high-quality fertilizer can be directly broadcast in the field, the cost of waste treatment is reduced, the waste is converted into resources, and an environment-friendly waste treatment mode is realized. Thirdly, the produced ash fertilizer has rich organic matter content and rich mineral elements, plays a positive role in soil improvement and crop growth, not only can provide necessary nutrients for crops, but also can increase the water and fertilizer retention capacity of soil, promote the fertility improvement of the soil and lay a solid foundation for sustainable development of agriculture. The novel energy-saving environment-friendly water heater is simple in integral structure, scientific and reasonable in design, flexible and convenient to use and transport, high in raw material utilization value, energy-saving and environment-friendly in application.
Description of the drawings:
fig. 1 is a schematic diagram of the overall internal structure of a mobile waste plant incineration device according to the present utility model;
fig. 2 is a schematic diagram of the front view of the movable waste plant incinerator according to the present utility model.
The specific embodiment is as follows:
the technical scheme of the present utility model will be clearly and completely described in the following with reference to the embodiments and the accompanying drawings.
Example 1:
the embodiment relates to a main body principle of a mobile waste plant incineration device with a specific structure and a connection example thereof, wherein the main body structure comprises: the device comprises a feed hopper 1, a crushing box 2, a crushing blade 3, a crushing motor 4, a fixed plate 5, an incinerator 6, a screen 7, an igniter 8, a gas transmission pipeline 9, a liquefied gas tank 10, a bearing mounting plate 11, wheels 12, a slag hole 13, a combustion-supporting fan 14, a smoke exhaust pipe 15, a handle 16, a waste gas treatment box 17, an activated carbon adsorption net 18, a chimney 19 and a crushing screw shaft 20; the device is also divided into a crushing device 21, an incineration device 22, an exhaust gas treatment device 23 and a liquefied gas combustion-supporting device 24 according to the functional structure; the upper wall of the left part of the bearing mounting plate 11 of the metal plate structure is fixedly provided with a feed hopper 1 for throwing plant wastes, a crushing box 2 for crushing the waste plants, an incinerator 6 for incinerating the waste plants and a slag hole 13 for discharging ashes from top to bottom in sequence; the feeding hopper 1, the crushing box 2, the incinerator 6 and the slag hole 13 are fixedly welded and communicated through the through type, the incinerator 6 is fixedly arranged on the upper wall of the bearing mounting plate 11 through a threaded structure, and the slag hole 13 is fixedly penetrated through the center of the left half part of the bearing mounting plate 11; the three-phase asynchronous crushing motor 4 for providing crushing power is arranged at the left side of the crushing box 2, the lower part of the three-phase asynchronous crushing motor is provided with a fixing plate 5 for supporting, the fixing plate 5 is horizontally fixed on the left outer side of the crushing box 2 of a metal square shell structure through a thread structure, the crushing motor 4 is connected with the crushing blade 3 through a crushing screw shaft 20, the crushing blade 3 is driven to rotate to crush wastes, the crushing screw shaft 20 and the crushing blade 3 are arranged in the crushing box 2, the crushing blade 3 is fixed on the crushing screw shaft 20 through screws, the crushing screw shaft 20 is respectively connected with the crushing motor 4 and the crushing box 2 through bearings, and the screen 7 of a steel bar structure for screening ash is arranged between the incinerator and the slag hole 13 through welding; the liquefied gas tank 10 is arranged on the upper wall of the bearing mounting plate 11 through screws and is positioned on the left side of the incinerator 6; the gas pipeline 9 is connected with the liquefied gas tank 10 and the igniter 8 through a threaded valve, penetrates through the left side wall of the incinerator 6 of the metal square shell structure, and the igniter 8 is arranged in the incinerator 6 to burn waste plants cooperatively; the combustion-supporting fan 14 is arranged on the upper wall of the bearing mounting plate 11 through a thread structure and is positioned on the right side of the incinerator 6, and an air outlet of the combustion-supporting fan penetrates through the right side wall of the incinerator 6 so as to provide sufficient oxygen for combustion; the exhaust gas treatment box 17 is arranged on the upper wall of the right part of the bearing mounting plate 11 through a thread structure, and two ends of the smoke exhaust pipe 15 respectively penetrate through the right side wall of the incinerator 6 and the left side wall of the exhaust gas treatment box 17; the activated carbon adsorption net 18 is embedded in the waste gas treatment box 17, and a chimney 19 is arranged at the top of the waste gas treatment box 17 in a communicating manner; the handle 16 is welded on the upper wall of the right part of the bearing mounting plate 11 and is positioned on the right side of the waste gas treatment box 17, and the specific structural form of the top of the handle 16 for controlling the running track of the rear wheel 12 is selected as concave-convex curved shape, square shape or oval shape according to actual needs, so that an operator can conveniently hold the handle tightly by hand, the running direction of the whole device is properly adjusted, and ash is scattered on the required ground and is beneficial to being buried under the ground; the waste plant incineration device is integrally fixed on a platform with a load-carrying flat plate structure formed by combining wheels 12 and a load-carrying mounting plate 11, and the concrete form of the wheels 12 is a hollow structure with a portable structure according to actual needs.
When the device is used, the whole device is pushed and pulled to a proper position of a farmland, when the harvested waste plant stalks are required to be burnt, the crushing motor 4 is started, the crushing motor 4 rotates to drive the crushing screw shaft 20 to rotate, the crushing screw shaft 20 rotates to drive the crushing blade 3 to rotate, the agricultural waste plants are automatically or manually thrown into the feed hopper 1 through the feed hopper, the waste materials are crushed under the action of the crushing blade 3, then the waste plants slide into the incinerator 6 from the inside of the crushing box 2 under the action of gravity and air pressure, the valve is opened to release fuel gas in the liquefied gas tank 10, the fuel gas is ignited after entering the igniter 8 through the gas transmission pipeline 9, and the agricultural waste plants in the heating incinerator 6 are ignited, and at the moment, the combustion-supporting fan 14 conveys air into the incinerator 6 to increase the oxygen content in the box, so that the incineration is more thorough. The agricultural waste plants in the incineration chamber 6 are ashes under the incineration effect, the ashes fall into the field through the screen 7 under the gravity effect, the generated flue gas enters the flue gas treatment box 17 through the smoke exhaust pipe 15, and the flue gas adsorbed by the activated carbon adsorption net 18 is discharged through the chimney 19. Once the combustion enters the stage of intense fire or the plant stalks are drier, the gas system can be shut down so as to save energy.
The whole device according to the present embodiment is divided into a pulverizing device 21, an incineration device 22, an exhaust gas treatment device 23, and a liquefied gas combustion-supporting device 24 according to the functional structure; wherein the crushing device 21 and the incineration device 22 can be operated simultaneously or independently, and a user can select a proper operation mode according to the volume of the waste plants.
When the embodiment is applied, the whole device can be matched with a harvesting machine to operate, so that the feeding port 1 can be in butt joint with a plant stalk orange output port of the combine harvesting machine, and the operation efficiency is improved.

Claims (7)

1. The utility model provides a portable abandonment plant burns device which characterized in that: the main structure comprises a feed hopper, a crushing box, a crushing blade, a crushing motor, a fixed plate, an incinerator, a screen, an igniter, a gas pipeline, a liquefied gas tank, a bearing mounting plate, wheels, a slag hole, a combustion-supporting fan, a smoke exhaust pipe, a handle, a waste gas treatment box, an activated carbon adsorption net, a chimney and a crushing screw shaft; the device is divided into a crushing device, an incineration device, an exhaust gas treatment device and a liquefied gas combustion-supporting device according to functional structures; the upper wall of the left part of the bearing mounting plate of the metal plate type structure is sequentially and fixedly provided with a feed hopper for throwing plant wastes, a crushing box for crushing the waste plants, an incinerator for incinerating the waste plants and a slag hole for discharging ashes from top to bottom; the feeding hopper, the crushing box, the incinerator and the slag hole are mutually communicated, fixedly welded and communicated, the incinerator is fixedly arranged on the upper wall of the bearing mounting plate through a threaded structure, and the slag hole fixing pipe is communicated with the center of the left half part of the bearing mounting plate; the three-phase asynchronous crushing motor for providing crushing power is arranged on the left side of the crushing box, the lower part of the three-phase asynchronous crushing motor is provided with a fixing plate for supporting, the fixing plate is horizontally fixed on the left outer side of the crushing box of the metal square shell structure through a threaded structure, the crushing motor is connected with the crushing blade through a crushing screw shaft, the crushing blade is driven to rotate to crush wastes, the crushing screw shaft and the crushing blade are arranged in the crushing box, the crushing blade is fixed on the crushing screw shaft through screws, the crushing screw shaft is respectively connected with the crushing motor and the crushing box through bearings, and a screen mesh of a reinforcing bar structure for screening ashes is arranged between the incinerator and a slag hole through welding; the liquefied gas tank is arranged on the upper wall of the bearing mounting plate through screws and is positioned at the left side of the incinerator; the gas pipeline is connected with the liquefied gas tank and the igniter through the threaded valve, penetrates through the left side wall of the incinerator of the metal square shell structure, and the igniter is arranged in the incinerator to burn waste plants cooperatively; the combustion-supporting fan is arranged on the upper wall of the bearing mounting plate through a thread structure and is positioned on the right side of the incinerator, and an air outlet of the combustion-supporting fan penetrates through the right side wall of the incinerator so as to provide sufficient oxygen for combustion; the exhaust gas treatment box is arranged on the upper wall of the right part of the bearing mounting plate through a thread structure, and two ends of the smoke exhaust pipe respectively penetrate through the right side wall of the incinerator and the left side wall of the exhaust gas treatment box; the activated carbon adsorption net is embedded in the waste gas treatment box, and a chimney is arranged at the top of the waste gas treatment box in a communication manner; the handle is welded on the upper wall of the right part of the bearing mounting plate and is positioned on the right side of the waste gas treatment box, and the specific structural form of the top of the handle for controlling the running track of the rear wheels is selected as concave-convex curved shape, square shape or oval shape according to actual needs, so that an operator can conveniently hold the handle tightly by hand, the running direction of the whole device is properly adjusted, and ash is scattered on the required ground and is beneficial to being buried under the ground; the waste plant incineration device is integrally fixed on a platform with a loading type flat plate structure formed by combining wheels and a bearing mounting plate, and the concrete form of the wheels is hollow with a portable structure according to actual needs.
2. The mobile waste plant incineration device according to claim 1, characterised in that: the crushing device is used for effectively crushing various waste plants and converting the crushed waste plants into small particles which are easy to process; a crushing screw shaft is arranged in a crushing box, a screw blade is arranged on the crushing screw shaft, a fixed plate is arranged on the outer wall of the crushing box, the upper end of the fixed plate is fixedly connected with a crushing motor, and the crushing motor is connected with the crushing screw shaft.
3. The mobile waste plant incineration device according to claim 1, characterised in that: the incinerator is an incinerator body with a common structure, is used for efficiently converting crushed waste plants into ash, and can be directly introduced into the ground for utilization.
4. The mobile waste plant incineration device according to claim 1, characterised in that: the liquefied gas combustion-supporting device is used for providing high-energy fuel and ensuring quick starting of combustion and comprises a liquefied gas tank, a gas pipeline and an igniter, wherein the upper end of the liquefied gas tank is connected with the left end of the gas pipeline; the gas pipeline rightwards enters the incinerator, an igniter is fixedly arranged at the right end of the gas pipeline, and the igniter is positioned on the inner side wall of the incinerator.
5. The mobile waste plant incineration device according to claim 1, characterised in that: the combustion-supporting fan is used for increasing oxygen supply in the combustion process, realizing full and efficient combustion, is arranged on the upper wall of the bearing mounting plate, and the air outlet of the combustion-supporting fan is communicated with the side wall of the incinerator to send air into the incinerator.
6. The mobile waste plant incineration device according to claim 1, characterised in that: the waste gas treatment device is used for filtering and purifying waste gas generated after incineration, so that harmful substances and particulate waste gas are removed, and the influence on the surrounding environment is reduced; the waste gas treatment device comprises a waste gas treatment box, an activated carbon adsorption net, a smoke exhaust pipe and a chimney.
7. The mobile waste plant incineration device according to claim 1, characterised in that: the smoke exhaust pipe is arranged on the side face of the waste gas treatment box, the right end of the smoke exhaust pipe is communicated with the waste gas treatment box, the left end of the smoke exhaust pipe is communicated with the incinerator, the chimney is arranged at the top of the waste gas treatment box, the hollow slag hole enables ash to be directly spread into a field, nutrients are provided for soil, and recycling of resources is achieved.
CN202311448328.5A 2023-11-02 2023-11-02 Portable abandonment plant burns device Pending CN117704385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311448328.5A CN117704385A (en) 2023-11-02 2023-11-02 Portable abandonment plant burns device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311448328.5A CN117704385A (en) 2023-11-02 2023-11-02 Portable abandonment plant burns device

Publications (1)

Publication Number Publication Date
CN117704385A true CN117704385A (en) 2024-03-15

Family

ID=90159573

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311448328.5A Pending CN117704385A (en) 2023-11-02 2023-11-02 Portable abandonment plant burns device

Country Status (1)

Country Link
CN (1) CN117704385A (en)

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