CN210935407U - On-line visual flotation system detector for flotation dosing control - Google Patents
On-line visual flotation system detector for flotation dosing control Download PDFInfo
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- CN210935407U CN210935407U CN201921446123.2U CN201921446123U CN210935407U CN 210935407 U CN210935407 U CN 210935407U CN 201921446123 U CN201921446123 U CN 201921446123U CN 210935407 U CN210935407 U CN 210935407U
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Abstract
The utility model discloses an online vision flotation system detector for flotation adds medicine control, including square airtight frame, tailing collection pump, tailing thick liquid processing apparatus, fan, adjustable light source, operating mode monitor, switch board, humidity transducer, image acquisition and conveyer, light sense sensor, flotation foam detection device includes that foam state detects camera, flotation cell, foam state and detects mount and light, through adding this link of online vision detection in current coal washery flotation medicine system, can make entire system form one set of complete closed loop automatic control system who has feedforward and result feedback simultaneously, realizes that the production process of flotation tends to steady operation under the ideal medicine state that adds, prevents to add too much or too little and influence the flotation effect with the medicine volume. The application of the online visual flotation system detector can improve the flotation recovery rate, reduce the medicine consumption, improve the economic benefit and realize the unattended flotation.
Description
Technical Field
The invention belongs to the technical field of mining production equipment, and particularly relates to an online visual flotation system detector for flotation dosing control.
Background
At present, industrial minerals become increasingly poor, fine and complex, and as comprehensive utilization and environmental protection requirements of metallurgy, chemical engineering and other processes are increasingly improved, flotation scientific technology becomes more important. The flotation is to make use of the hydrophobic and gas-philic (or oleophilic) property of the material itself or obtained after the treatment of the medicament to make the material gather at the water-gas or water-oil interface to achieve enrichment, separation and purification.
The proper dosage in the flotation process is an important means for ensuring the ash content of the flotation clean coal, improving the yield of the clean coal and reducing the consumption of medicaments. The flotation production dosing amount is determined by a conventional method of pre-dosing through detecting the flow and concentration of ore pulp and controlling the dosing amount by manually observing the gray level of tailings. The real-time online detection and feedback of the tailing state in the flotation process are very important for the quality of the flotation result, but an accurate real-time detection means for the flotation dosing result is lacked at present.
Disclosure of Invention
In order to solve the problems, the invention discloses an online visual flotation system detector for flotation dosing control, which is characterized in that an online visual detection link is added in the existing flotation dosing system of a coal washing plant, so that the flotation recovery rate can be improved, the drug consumption can be reduced, the economic benefit can be improved, and unattended flotation can be realized.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an online visual flotation system detector for flotation dosing control comprises a square closed frame, a tailing collecting pump, a tailing slurry processing device, a foam state detection camera, a fan, an adjustable light source, a working condition monitoring probe, a control cabinet, a humidity sensor, an image collecting and transmitting device, a light sensor and a flotation tank, wherein the closed frame is divided into two layers, the control cabinet is arranged on the upper layer of the closed frame, an upper computer interface is connected below the closed frame, the tailing collecting pump is arranged at the interface of the upper computer, the tailing collecting pump is arranged in a protective cover of the tailing collecting pump, and the fan is fixed on the protective cover of the tailing collecting pump; the tailing collecting pump is connected with the tailing slurry treatment device through a slurry conveying pipe; the air blowing pipe is connected with the air pipe through an air pipe; the blowpipe is fixed on the tailing slurry treatment device; the tailing slurry treatment device is fixed in the closed frame; 3 adjustable light sources are uniformly distributed and fixed on the inner wall of the closed frame; the height of the adjustable light source is higher than that of the tailing slurry treatment device, a working condition monitoring probe, a humidity sensor, an image acquisition and transmission device and a light sensation sensor are arranged above the lower layer of the closed frame, a foam state detection fixing frame is arranged above the flotation tank, and a foam state detection camera is fixed on a reciprocating frame on the foam state detection fixing frame; a slurry discharge hose is arranged below the tailing slurry treatment device and is connected with an outlet of the closed frame, an outlet of the flotation tank is connected with an inlet of the closed frame, and the inlet of the closed frame is connected with a tailing collection pump through a tailing slurry inlet hose.
As an improvement of the invention, the tailing slurry treatment device comprises a backflow liquid storage tank, a steady flow tank, a collection tank and a reciprocating guide rail assembly, wherein the upper part of the backflow liquid storage tank is provided with an opening; the collecting box is arranged on the side face of the steady flow box in a surrounding mode, a vertical partition plate and a vertical guide plate are sequentially arranged on one side, close to the steady flow box, of the collecting box, a detection area is arranged on one side, far away from the steady flow box, of the collecting box, the bottom face of the collecting box is inclined downwards, fine holes are formed in the bottom face of the detection area, gaps are formed among the partition plate, the guide plate and the bottom face of the collecting box, the reciprocating guide rail assembly comprises a motor, a rotating shaft, a foam scraper and an anti-sedimentation scraper, the motor is connected with the rotating shaft, the side face of the rotating shaft is connected with the foam scraper, the foam scraper is arranged above the steady; the blowpipe is fixed on the backward flow liquid reserve tank, and the blowpipe gas outlet is towards the detection zone.
As an improvement of the invention, the front end of the closed frame is provided with an upper movable door and a lower movable door.
As an improvement of the invention, the upper movable door of the closed frame is provided with a touch control screen.
As an improvement of the invention, the rear end of the closed frame is provided with 2-4 fans.
As an improvement of the invention, one side of the foam state detection camera is provided with an illuminating lamp.
As an improvement of the invention, the lower part of the backflow liquid storage tank is of a square conical structure with a large upper part and a small lower part.
As an improvement of the invention, the bottom surface of the anti-sedimentation scraper is provided with an elastic piece.
As an improvement of the invention, a flushing port is arranged below the side of the detection area, the flushing port is connected with an air source through a pipeline, and a control valve is arranged on the pipeline.
As an improvement of the invention, the slurry outlet is connected with a slurry discharge hose, and a filter screen is arranged at the slurry outlet.
The invention has the beneficial effects that:
firstly, a flotation system calculates the rough dosage in advance on the basis of detecting the flow and concentration data of ore pulp; the detection link is added at the last flotation station, so that three functions can be realized: 1. cleaning foam on the liquid surface, and providing a stable image acquisition liquid surface for an online visual flotation system detector; 2. the image acquisition liquid level loss caused by insufficient supply or sudden increase of supply of tailing slurry can be avoided; 3. the cleaning scraper is additionally arranged, so that the precipitation of impurities in the tailing slurry can be prevented, the state of the tailings is detected in real time through the detector, the information is fed back to the flotation system, and the dosage is corrected in real time by the flotation system, so that the flotation production process tends to operate stably under an ideal state;
secondly, by adding a real-time detection link of the tailing state and the flotation froth state, the chemical consumption can be reduced, the cost can be reduced, and the flotation quality can be improved;
and thirdly, the tailing state and the flotation froth state are detected by the detector to replace manual operation, so that automation of the flotation processing process can be realized, the flotation productivity is improved, the labor intensity of workers can be reduced, errors caused by manual operation are avoided, and the quality of flotation production is prevented from being influenced due to untimely result feedback.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a tailing slurry treatment device according to the present invention.
Fig. 3 is a schematic view of the installation of the foam state detection camera according to the present invention.
FIG. 4 is a schematic view of an anti-settling scraper according to the present invention.
FIG. 5 is a front end profile view of the containment frame of the present invention.
Fig. 6 is a rear end profile view of the hermetic frame according to the present invention.
List of reference numerals:
1. an upper computer interface, 2 tailings collection pumps, 3 tailings collection pump protective covers, 4 fans, 5 pulp conveying pipes, 6 air pipes, 7 tailings slurry processing devices, 8 adjustable light sources, 9 blowing pipes, 10 fans, 11 working condition monitoring probes, 12 control cabinets, 13 humidity sensors, 14 image collection and transmission devices, 15 light-sensitive sensors, 16 closed frames, 17 outlet ports, 18 pulp discharge hoses, 19 tailings pulp inlet hoses, 21 flow stabilizing boxes, 22 foam scrapers, 23 motors, 24 partition plates, 25 flow guide plates, 26 sedimentation preventing scrapers, 27 collection boxes, 29 backflow liquid storage boxes, 30 pulp inlet ports, 31 pulp outlet ports, 32 detection zones, 33 foam state detection fixing frames, 34 illuminating lamps, 35, foam state detection cameras, 36, elastic pieces, 37 flushing ports, 38 and pipelines, 39. control valve, 40, upper movable door, 41, lower movable door, 42, touch control screen, 43, flotation cell, 44, and the frame that makes a round trip.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in the figure, the online visual flotation system detector for flotation dosing control retains the original flotation tank 43, is added on the basis of the original flotation tank, detects the tailing state and the flotation froth state of the flotation tank through visual equipment, transmits the detection result to the flotation dosing control system in real time, and automatically adjusts corresponding control parameters according to the detected tailing state and flotation froth state and by combining pulp flow and concentration data, and adjusts the dosing amount of flotation dosing in real time. The link of online visual detection is added in the existing coal washing plant flotation dosing system, so that the whole system can form a set of complete closed-loop automatic control system with feedforward and result feedback, the production process of flotation tends to stably run in an ideal dosing state, and the influence on the flotation effect caused by too much or too little dosing amount is prevented. The application of the online visual flotation system detector can improve the flotation recovery rate, reduce the medicine consumption, improve the economic benefit and realize the unattended flotation.
The detector comprises a square closed frame 16, a tailing collecting pump 2, a tailing slurry processing device 7, a foam state detection camera 35, a fan 4, an adjustable light source 8, a working condition monitoring probe 11, a control cabinet 12, a humidity sensor 13, an image collecting and transmitting device 14, a light sensor 15 and a flotation tank 43, wherein the flotation tank 43 is a previous process, the foam state detection camera 35 transmits a liquid level model after dosing reaction to the control cabinet 12, then a small part of the liquid level model is extracted from the flotation tank to the tailing slurry processing device 7, and detection is carried out after foam and sediment are removed, so that a more real result can be obtained; the closed frame 16 is divided into two layers, the control cabinet 12 is arranged on the upper layer of the closed frame 16, an upper computer interface 1 is connected below the closed frame 16, a tailing collecting pump 2 is arranged at the upper computer interface 1, the tailing collecting pump 2 is arranged in a tailing collecting pump protective cover 3, and the fan 4 is fixed on the tailing collecting pump protective cover 3; the tailing collecting pump 2 is connected with a tailing slurry processing device 7 through a slurry conveying pipe 5; is connected with a blowpipe 9 through an air pipe; the blowpipe 9 is fixed on the tailing slurry treatment device 7; the tailing slurry treatment device 7 is fixed in the closed frame 16; 3 adjustable light sources 8 are uniformly distributed and fixed on the inner wall of the closed frame 16; the height of the adjustable light source 8 is higher than that of the tailing slurry processing device 7, a working condition monitoring probe 11, a humidity sensor 13, an image acquisition and transmission device 14 and a light sensation sensor 15 are arranged above the inside of the closed frame 16, a foam state detection fixing frame 33 is arranged above the flotation tank 43, and a foam state detection camera 35 and an illuminating lamp 34 are fixed on a back-and-forth frame 44 on the foam state detection fixing frame; the foam state detection camera 35 can shoot back and forth above the flotation tank and transmit pictures to the control cabinet 12, and a slurry discharge hose 18 is arranged below the tailing slurry treatment device 7 and connected with an outlet 17 of the closed frame; the control cabinet 12 is connected with an upper computer, the outlet of the flotation tank 43 is connected with the inlet of the closed frame, and the inlet of the closed frame is connected with the tailing collecting pump 2 through a tailing slurry inlet hose 19.
The closed frame 16 is of a square structure, the front end of the closed frame is provided with an upper movable door 40 and a lower movable door 41, the upper movable door 40 is provided with a touch control screen 42, and the control cabinet 12 is arranged in the upper movable door 40 and the upper layer and the lower layer of the closed frame 16 are separated, so that the possibility of water mist erosion is reduced.
The invention is provided with 2-4 fans 10 at the rear end of the closed frame 16, and the fans are used for dissipating heat inside the detector and removing water vapor inside the detector in time.
The tailing slurry treatment device 7 comprises a backflow liquid storage tank 29 with an opening at the upper part, a steady flow tank 21, a collection tank 27 and a reciprocating guide rail assembly, wherein a slurry inlet 30 and a slurry outlet 31 are arranged below the backflow liquid storage tank 29, and a slurry conveying pipe 5 is fixed below the steady flow tank 21 through the slurry inlet 30; the collecting box 27 is arranged on the side face of the steady flow box 21 in a surrounding mode, a vertical partition plate 24 and a guide plate 25 are sequentially arranged on one side, close to the steady flow box 21, of the collecting box 27, a detection area 32 is arranged on one side, far away from the steady flow box 21, of the collecting box 27, the bottom face of the collecting box 27 inclines downwards, fine holes are formed in the bottom face of the detection area 32, gaps are formed between the partition plate and the bottom face of the collecting box 27 and between the guide plate and the partition plate, the reciprocating guide rail assembly comprises a motor 23, a rotating shaft, a foam scraper 22 and an anti-precipitation scraper 26, the motor 23 is connected with the rotating shaft, the side face of the rotating shaft is connected with the foam scraper 22, the foam scraper 22 is arranged above the steady flow box; the blowpipe 9 is fixed on the backflow liquid storage box 29, the air outlet of the blowpipe 9 faces to the detection area 32, through the installation of the tailing slurry processing device 7, the tailing slurry overflows from the top of the steady flow box 21 during operation and flows into the collection box 27, the foam scraper 22 and the anti-settling scraper 26 are driven by the motor to rotate ceaselessly, firstly, the foam on the image collection liquid level can be cleaned in time, and a stable image collection liquid level is provided for the online visual flotation system detector; secondly, the image acquisition liquid level loss caused by insufficient supply or sudden increase of supply of tailing slurry can be avoided; and finally, due to the special structure and the additionally arranged cleaning scraper, the precipitation of impurities in the tailing slurry can be prevented, and the continuous and stable normal image acquisition of the detector of the online visual flotation system is ensured.
The lower part of the backflow liquid storage tank 29 is of a square cone-shaped structure, the upper part is large, the lower part is small, and the backflow liquid storage tank is convenient for tailing slurry to flow back in time and prevents the tailing slurry from precipitating.
According to the invention, a flushing port 7 is arranged below the side of the detection area 32, the flushing port is connected with an air source through a pipeline 38, a control valve 39 is arranged on the pipeline, air blowing is carried out at the flushing port 7 to enable slurry at the bottom of the image acquisition box 27 to flow, and impurities in the slurry are flushed into the backflow liquid storage box 29 through a pore in time; meanwhile, the elastic piece 36 (rubber or plastic) is arranged on the bottom surface of the anti-settling scraper 26, has certain elasticity, cannot be clamped during rotation, is convenient for discharging sediment from the fine holes, and cannot be overstocked.
The slurry outlet 31 is connected with the slurry discharge hose 18, and the slurry outlet 31 is provided with a filter screen.
The invention relates to an online visual flotation system detector for flotation dosing control, which has the working principle that:
(1) the online visual flotation system detector is connected with an upper computer through an upper computer interface 1 and can be controlled by the upper computer; the closed frame 16 is provided with a touch control screen 42, and the adjustable light source 8, the fan 10, the humidity sensor 13, the image acquisition and transmission device 14, the light sensation sensor 15, the tailing slurry processing device 7 and the tailing acquisition pump 2 can be controlled through the touch control screen 42;
(2) the tailing slurry is collected into the tailing slurry treatment device 7 by the tailing collecting pump 2 through a tailing slurry inlet hose 19; the tailing slurry treatment device 7 is used for shunting tailing slurry and stabilizing tailing slurry, collecting and removing foam; guiding and refluxing the tailing slurry to provide a stable image acquisition liquid level; washing and cleaning impurities in the tailing slurry; collecting, buffering and timely refluxing tailing slurry;
(3) adjusting 3 adjustable light sources 8 to a proper angle and fixing; the tailing slurry is conveyed into a tailing slurry processing device 7, and an image collecting and conveying device 14 collects the state of tailing slurry and conveys the tailing slurry in real time; the foam state detection camera 35 collects the foam state in the flotation tank and transmits the foam state in real time, and the foam state detection camera 35 has a holder and an optical zooming function and can realize whole-area coverage through adjustment;
(4) when in normal use, the tailings slurry after flotation is conveyed into a tailings slurry treatment device 7; the cleaning device is automatically started to automatically clean the foam on the liquid surface and the impurities at the bottom of the tailing slurry treatment device 7; the image collecting and transmitting device 14 collects the state of tailing slurry in real time and transmits the tailing slurry to an upper computer in real time; the foam state detection camera 35 collects the foam state in the flotation tank and transmits the foam state to an upper computer in real time;
(5) and the upper computer automatically adjusts corresponding control parameters according to the detected tailing slurry state and flotation tank foam state results and by combining flotation slurry flow and concentration data, adjusts the chemical adding amount of flotation chemicals in real time and adjusts the chemical adding amount in real time. The circulation work leads the flotation process to tend to be stable and the flotation result to tend to be qualified.
The closed frame 16 of the invention has the function of preventing the whole detection process of the detector from being influenced by the external environment; the light sensor 15 is used for monitoring the brightness of the light source in real time to ensure that the detection environment is unchanged; the humidity sensor 13 is used for monitoring the humidity inside the detector in real time to ensure that the image acquisition and transmission device 14 works normally; the function of the working condition monitoring probe 11 is to monitor the internal operation condition of the detector in real time.
The invention has the following functions:
the detector integrates a plurality of factors of tailing state, flotation froth state, ore pulp flow and concentration, and can calculate the more practical dosage;
secondly, a detector automatically detects the state of the tailings in real time instead of manual observation;
thirdly, the detector automatically uploads the detection result in real time and automatically adjusts the dosing amount to replace manual adjustment;
fourthly, the tailing slurry treatment device can provide a stable tailing state collection liquid level;
fifthly, the cleaning device can clean the foam on the liquid surface in time and prevent impurities from precipitating;
sixthly, the angle of the light source is adjustable, and different illumination angles can be set according to different working conditions;
seventhly, the frame is designed in a closed mode, so that the working environment of the detector is kept consistent;
eighthly, a light sensor, a humidity sensor and a working condition monitoring probe are arranged in the detector, so that the operating environment in the detector can be monitored in real time;
ninth, the back mounted has the fan, can ventilate, dispel the heat, defogging.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (10)
1. The utility model provides an online vision flotation system detector for flotation adds medicine control which characterized in that: the device comprises a square closed frame, a tailing collecting pump, a tailing slurry processing device, a foam state detection camera, a fan, an adjustable light source, a working condition monitoring probe, a control cabinet, a humidity sensor, an image collecting and transmitting device, a light sensor and a flotation tank, wherein the closed frame is divided into two layers, the control cabinet is arranged on the upper layer of the closed frame, an upper computer interface is connected below the closed frame, the tailing collecting pump is arranged at the interface of the upper computer, the tailing collecting pump is arranged in a tailing collecting pump protective cover, and the fan is fixed on the tailing collecting pump protective cover; the tailing collecting pump is connected with the tailing slurry treatment device through a slurry conveying pipe; the air blowing pipe is connected with the air pipe through an air pipe; the blowpipe is fixed on the tailing slurry treatment device; the tailing slurry treatment device is fixed in the closed frame; 3 adjustable light sources are uniformly distributed and fixed on the inner wall of the closed frame; the height of the adjustable light source is higher than that of the tailing slurry treatment device, a working condition monitoring probe, a humidity sensor, an image acquisition and transmission device and a light sensation sensor are arranged above the lower layer of the closed frame, a foam state detection fixing frame is arranged above the flotation tank, and a foam state detection camera is fixed on a reciprocating frame on the foam state detection fixing frame; a slurry discharge hose is arranged below the tailing slurry treatment device and is connected with an outlet of the closed frame, an outlet of the flotation tank is connected with an inlet of the closed frame, and the inlet of the closed frame is connected with a tailing collection pump through a tailing slurry inlet hose.
2. The on-line visual flotation system detector for flotation dosing control of claim 1, wherein: the front end of the closed frame is provided with an upper movable door and a lower movable door.
3. The on-line visual flotation system detector for flotation dosing control of claim 2, wherein: and a touch control screen is arranged on the upper movable door of the closed frame.
4. The on-line visual flotation system detector for flotation dosing control of claim 1, wherein: the rear end of the closed frame is provided with 2-4 fans.
5. The on-line visual flotation system detector for flotation dosing control of claim 1, wherein: and an illuminating lamp is arranged on one side of the foam state detection camera.
6. The on-line visual flotation system detector for flotation dosing control of claim 1, wherein: the tailing slurry treatment device comprises a backflow liquid storage tank, a steady flow tank, a collection tank and a reciprocating guide rail assembly, wherein the upper part of the backflow liquid storage tank is provided with an opening; the collecting box is arranged on the side face of the steady flow box in a surrounding mode, a vertical partition plate and a vertical guide plate are sequentially arranged on one side, close to the steady flow box, of the collecting box, a detection area is arranged on one side, far away from the steady flow box, of the collecting box, the bottom face of the collecting box is inclined downwards, fine holes are formed in the bottom face of the detection area, gaps are formed among the partition plate, the guide plate and the bottom face of the collecting box, the reciprocating guide rail assembly comprises a motor, a rotating shaft, a foam scraper and an anti-sedimentation scraper, the motor is connected with the rotating shaft, the side face of the rotating shaft is connected with the foam scraper, the foam scraper is arranged above the steady; the blowpipe is fixed on the backward flow liquid reserve tank, and the blowpipe gas outlet is towards the detection zone.
7. The on-line visual flotation system detector for flotation dosing control of claim 6, wherein: the lower part of the backflow liquid storage tank is of a square cone-shaped structure with a large upper part and a small lower part.
8. The on-line visual flotation system detector for flotation dosing control of claim 6, wherein: the bottom surface of the anti-settling scraper is provided with an elastic piece.
9. The on-line visual flotation system detector for flotation dosing control of claim 6, wherein: the device is characterized in that a flushing port is arranged below the side of the detection area, the flushing port is connected with an air source through a pipeline, and a control valve is arranged on the pipeline.
10. The on-line visual flotation system detector for flotation dosing control of claim 6, wherein: the slurry outlet is connected with a slurry discharge hose and is provided with a filter screen.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586338A (en) * | 2019-09-02 | 2019-12-20 | 江苏仕能机械设备有限公司 | On-line visual flotation system detector for flotation dosing control |
| CN113063781A (en) * | 2021-03-22 | 2021-07-02 | 江苏仕能工业技术有限公司 | Novel AI online vision ore pulp detector |
| CN113798066A (en) * | 2021-08-25 | 2021-12-17 | 北京科技大学 | System and method for detecting dispersion of ore pulp gas in flotation equipment |
-
2019
- 2019-09-02 CN CN201921446123.2U patent/CN210935407U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586338A (en) * | 2019-09-02 | 2019-12-20 | 江苏仕能机械设备有限公司 | On-line visual flotation system detector for flotation dosing control |
| CN110586338B (en) * | 2019-09-02 | 2023-09-26 | 江苏仕能工业技术有限公司 | Online visual flotation system detector for flotation dosing control |
| CN113063781A (en) * | 2021-03-22 | 2021-07-02 | 江苏仕能工业技术有限公司 | Novel AI online vision ore pulp detector |
| CN113798066A (en) * | 2021-08-25 | 2021-12-17 | 北京科技大学 | System and method for detecting dispersion of ore pulp gas in flotation equipment |
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Address after: 221000 c04-1-101, Yongjia science and Technology Park, Xuzhou, No.1, Shundi North Road, Quanshan Economic Development Zone, Quanshan District, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Shineng Industrial Technology Co.,Ltd. Address before: 221009 room 1710, floor 3, Pengcheng Road Business District, Xuzhou City, Jiangsu Province Patentee before: Jiangsu Shineng Machinery Equipment Co.,Ltd. |