CN203642670U - Multipurpose rotary kiln - Google Patents
Multipurpose rotary kiln Download PDFInfo
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- CN203642670U CN203642670U CN201320796835.3U CN201320796835U CN203642670U CN 203642670 U CN203642670 U CN 203642670U CN 201320796835 U CN201320796835 U CN 201320796835U CN 203642670 U CN203642670 U CN 203642670U
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Abstract
The utility model relates to thermal equipment for calcinating, roasting or drying granular and power materials, in particular to a multipurpose rotary kiln. The multipurpose rotary kiln comprises a main cylinder (5) and is characterized by further comprising a heating device (10), a rotation support, a rotation power device, a feed device, a striking device, a seal device and a gas circulating system. A feed support (3), the main cylinder (5), a gear box (6), a bearing support (9), the heating device (10), an industrial control computer (11), a motor (32) and a striking support (35) are disposed on an operation platform (7). The multipurpose rotary kiln is high in automation level, low in energy consumption and high in production efficiency.
Description
Technical field
The utility model relates to the Thermal Equipment of a kind of calcining, roasting or drying granular and granular material, particularly a kind of multipurpose rotary kiln.
Background technology
Rotary kiln has been widely used in metallurgical and chemical industry as a kind of equipment for catalyst and carrier roasting, this is mainly because rotary kiln can play to material the effect of stirring, mixing, thereby material is heated evenly therein, there are the properties of product of its production stable.The rotary kiln using is at present all consistent old equipment decades, all more complicated of revolution kiln owner's cylinder charging-discharging structure, and this just causes overall sealing poor, and reacting gas is than being easier to overflow the harm that causes each side.In addition the design of old-fashioned revolution kiln owner cylinder is all more single, needs continuous high temperature operation in heating process, once and the main cylinder of power-off concentrating under temperature action and can deform, tend causes very large infringement to equipment like this.Old-fashioned rotary kiln automaticity is low, needs multiple person cooperational just can complete production task, and production efficiency is low.
Utility model content
In order to overcome the defect of prior art, the calcining that a kind of automaticity is high, energy consumption is little, production efficiency is high roasting apparatus is provided, the utility model discloses a kind of multipurpose rotary kiln.
The utility model reaches goal of the invention by following technical solution:
A kind of multipurpose rotary kiln, comprises main cylinder, it is characterized in that: also comprise heater, revolution support, rotary motive power device, feed arrangement, beating unit, sealing device and the gas system for the distribution of commodities,
Main cylinder is for charge, main cylinder comprises high temperature resistant spiral striker plate, high-temperature alloy steel cylinder, heat-conducting layer and discharge bucket, high temperature resistant spiral striker plate is arranged on high-temperature alloy steel cylinder inside, heat-conducting layer is fixed on high-temperature alloy steel cylinder outside, the bottom of high-temperature alloy steel cylinder one end is provided with discharging opening, and discharging opening connects and is connected with discharge bucket; High temperature resistant spiral striker plate can make material keep the uniform time of staying, the uniformity that guarantee is heated, heat-conducting layer has amphicheirality, in the time continuing to be heated, can transfer heat to rapidly high-temperature alloy steel cylinder, in the time disconnecting to heat-conducting layer transferring heat, heat-conducting layer can absorb the resident heat of high-temperature alloy steel cylinder, and by dissipation of heat, so just can ensure in the time of power-off, main cylinder can be because not being heated and being out of shape in continuum;
Heater is for carrying out continuous heating to main cylinder, and heater comprises electrically heated rod, sealing ring and heat resistant layer, and electrically heated rod is located on the barrel of high-temperature alloy steel cylinder, and sealing ring is embedded in the two ends of high-temperature alloy steel cylinder, and heat resistant layer is coated on outside electrically heated rod; Sealing ring and heat resistant layer can well stop heat outwards to conduct, and so not only can improve the utilization rate of heat, have also effectively avoided the harm causing to external environment condition and equipment because of overheated;
Revolution is supported and is used for supporting main cylinder and completes and rotatablely move, and revolution is supported and comprised 4 angular contact ball bearings and support of bearing composition, and high-temperature alloy steel jacket casing is in the inner ring of 4 angular contact ball bearings, and the outer ring sleeve of 4 angular contact ball bearings is in the support of bearing;
Rotary motive power device is used for driving main cylinder to complete rotatablely moving, rotary motive power device comprises driving gear, gear-box and driven gear, driving gear and driven gear are all located in gear-box, the central shaft of driving gear is connected with the output shaft of motor, the gear teeth of driven gear and the gear teeth meshing of driving gear, the central shaft of driven gear is connected with the central shaft of main cylinder;
Feed arrangement is rotated for block material being carried out to send into main cylinder after grinding, feed arrangement comprises feed hopper, flour mill, motor, transmission device, charging support and feeding seal baffle plate, the output shaft of motor connects the central shaft of flour mill by transmission device, the discharging opening of feed hopper is the charging aperture to flour mill just, the discharging opening of flour mill connects the charging aperture of high-temperature alloy steel cylinder, between flour mill discharging opening and high-temperature alloy steel cylinder charging aperture, being provided with feeding seal baffle plate causes when effectively avoiding charging internal gas to reveal the sealing while ensureing to continue charging, flour mill, motor and transmission device are all located on charging support, feed arrangement carries out sending rotary kiln to after grinding to block material, can heat more fully or calcine, more be conducive to ensure the stable of material property, flour mill is by motor and actuator drives, whole feed arrangement is placed on charging support, guarantee can just can be sent material to rotary kiln without External Force Acting under material gravity effect, reduces energy loss,
Beating unit is used for preventing that grinding material is attached to main cylinder, make dusty material leave barrel by impacting main cylinder, beating unit includes hammer, connecting rod, torsion spring, impact support, roller, roller shaft and guide rail, hammer is fixed on one end of connecting rod, roller is fixed on the other end of connecting rod by roller shaft, the centre of connecting rod is fixed on and is impacted on support by torsion spring, form a leverage with elastic restoring force, guide rail coiling is fixed on the lateral wall of main cylinder, the cross section of guide rail is lobe and the groove shape at interval successively, roller is fitted on guide rail and rolls, in the time of the lobe on guide rail and roller contact, just in time impacted on main cylinder by leverage hammer, in the time of the groove on guide rail and roller contact, under the twisting resistance effect of torsion spring, hammer is left main cylinder, so repeatedly complete the process of impacting,
Sealing device is for implementing sealing to main cylinder two ends, prevent that heat runs off, reduce power consumption, sealing device comprises front seal closure and rear seal closure, front seal closure is connected with main cylinder with sealing ring with the bearing that rear seal closure all passes through in the support of bearing, wherein, rear seal closure is double-decker, the internal layer of rear seal closure can move back and forth by guiding mechanism and screw-nut body between main cylinder and rear seal closure bottom, in the time that the internal layer of rear seal closure and main socket joint touch, complete sealing, now between main cylinder and discharging opening, stopped in sealing state by the internal layer of rear seal closure; In the time that the internal layer of rear seal closure contacts with rear seal closure under screw-nut body effect, now discharging opening and main cylinder are communicated with, and can complete discharging operation;
Gas communication system is used for preventing causing air pressure rising to cause accident to occur because inner pernicious gas cannot overflow, gas communication system is located on rear seal closure, gas communication system comprises pneumatic filter, breather pipe and two-way air exhauster, two-way air exhauster is located in main cylinder, the gas outlet of two-way air exhauster connects breather pipe, and breather pipe seal closure after passing is successively connected pneumatic filter with after front seal closure; Internal gas can import pneumatic filter through breather pipe by two-way air exhauster, processes after filtration and confirms after harmless to enter atmosphere; Gas extraction system also can be reverse main cylinder that catalytic gas is imported participate in reaction;
Charging support, main cylinder, gear-box, the support of bearing, heater, industrial computer, motor and impact support and be all located on job platform.
Described multipurpose rotary kiln, is characterized in that: also comprise control system, control system is mainly that whole workflow is controlled, and control system comprises an industrial computer, and industrial computer connects electrically heated rod and the motor of flour mill, heater by holding wire.Industrial computer can, according to parameters such as the procedure auto-control temperature arranging, rotating speed, times, also can carry out manual operation.
Described multipurpose rotary kiln, is characterized in that: also comprise wind, driven gear is also connected with wind in gear-box, and the handle end of wind is located at outside gear-box.Wind is set and can in the time of power-off, hand operation completes discharging, prevent that the raw material of heating is inner bonding at main cylinder.
Described multipurpose rotary kiln, is characterized in that: the transmission device between motor and flour mill is selected belt transmission.
The utility model adopts high-tech heat conduction and thermal resistance material, can effectively reduce energy consumption, and the production procedure of automation has simultaneously improved production efficiency greatly.
The beneficial effects of the utility model are: automaticity is high, and energy consumption is little, and production efficiency is high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model is taken the schematic diagram after rear seal closure apart;
Fig. 3 is front view of the present utility model;
Fig. 4 is the structural representation of gas communication system in the utility model;
Fig. 5 is right view of the present utility model;
Fig. 6 is the structural representation of beating unit in the utility model;
Fig. 7 is the generalized section of the utility model middle guide.
Detailed description of the invention
Further illustrate the utility model by specific embodiment below.
Embodiment 1
A kind of multipurpose rotary kiln, comprises control system, main cylinder 5, heater 10, revolution support, rotary motive power device, feed arrangement, beating unit, sealing device and the gas system for the distribution of commodities, and as shown in the figure, concrete structure is:
Main cylinder 5 is for charge, main cylinder 5 comprises high temperature resistant spiral striker plate 22, high-temperature alloy steel cylinder 27, heat-conducting layer 29 and discharge bucket 13, high temperature resistant spiral striker plate 22 is arranged on high-temperature alloy steel cylinder 27 inside, heat-conducting layer 29 is fixed on high-temperature alloy steel cylinder 27 outsides, the bottom of high-temperature alloy steel cylinder 27 one end is provided with discharging opening 21, and discharging opening 21 connects and is connected with discharge bucket 13; High temperature resistant spiral striker plate 22 can make material keep the uniform time of staying, the uniformity that guarantee is heated, heat-conducting layer 29 has amphicheirality, in the time continuing to be heated, can transfer heat to rapidly high-temperature alloy steel cylinder 27, in the time disconnecting to heat-conducting layer 29 transferring heat, heat-conducting layer 29 can absorb the resident heat of high-temperature alloy steel cylinder 27, and by dissipation of heat, so just can ensure in the time of power-off, main cylinder 5 can be because not being heated and being out of shape in continuum;
Revolution is supported to be used for supporting completing for main 5 and is rotatablely moved, revolution is supported and is comprised that 4 angular contact ball bearings 19 and the support of bearing 9 form, high-temperature alloy steel cylinder 27 is enclosed within the inner ring of 4 angular contact ball bearings 19, and the outer ring sleeve of 4 angular contact ball bearings 19 is in the support of bearing 9;
Rotary motive power device is used for driving main cylinder 5 to complete rotatablely moving, rotary motive power device comprises driving gear 26, gear-box 6 and driven gear 20, driving gear 26 and driven gear 20 are all located in gear-box 6, the central shaft of driving gear 26 is connected with the output shaft of motor, the gear teeth meshing of the gear teeth of driven gear 20 and driving gear 26, the central shaft of driven gear 20 is connected with the central shaft of main cylinder 5;
Feed arrangement is rotated for block material being carried out to send into main cylinder after grinding, feed arrangement comprises feed hopper 1, flour mill 2, motor 32, transmission device 6, charging support 3 and feeding seal baffle plate 25, the output shaft of motor 32 connects the central shaft of flour mill 2 by transmission device 6, the discharging opening of feed hopper 1 is the charging aperture to flour mill 2 just, the discharging opening of flour mill 2 connects the charging aperture of high-temperature alloy steel cylinder 27, between flour mill 2 discharging openings and high-temperature alloy steel cylinder 27 charging apertures, being provided with feeding seal baffle plate 25 causes when effectively avoiding charging internal gas to reveal the sealing while ensureing to continue charging, flour mill 2, motor 32 and transmission device 6 are all located on charging support 3, feed arrangement carries out sending rotary kiln to after grinding to block material, can heat more fully or calcine, more be conducive to ensure the stable of material property, flour mill 2 drives by motor 32 and transmission device 6, whole feed arrangement is placed on charging support 3, guarantee can just can be sent material to rotary kiln without External Force Acting under material gravity effect, reduces energy loss,
Beating unit is used for preventing that grinding material is attached to main cylinder 5, make dusty material leave barrel by impacting main cylinder 5, beating unit as shown in Figure 6, include hammer 38, connecting rod 37, torsion spring 36, impact support 35, roller 33, roller shaft 34 and guide rail 18, hammer 38 is fixed on one end of connecting rod 37, roller 33 is fixed on the other end of connecting rod 37 by roller shaft 34, the centre of connecting rod 37 is fixed on and is impacted on support 35 by torsion spring 36, form a leverage with elastic restoring force, guide rail 18 coilings are fixed on the lateral wall of main cylinder 5, the cross section of guide rail 18 as shown in Figure 7, for lobe 181 and groove 182 shape at interval successively, roller 33 is fitted on guide rail 18 and rolls, in the time that the lobe 181 on guide rail 18 contacts with roller 33, just in time impacted on main cylinder 5 by leverage hammer 38, in the time that the groove 182 on guide rail 18 contacts with roller 33, under the twisting resistance effect of torsion spring 36, hammer 38 is left main cylinder 5, so repeatedly complete the process of impacting,
Sealing device is for implementing sealing to main cylinder 5 two ends, prevent that heat runs off, reduce power consumption, sealing device comprises front seal closure 4 and rear seal closure 17, front seal closure 4 is connected with main cylinder 5 with sealing ring 12 with the bearing that rear seal closure 17 all passes through in the support of bearing 9, wherein, rear seal closure 17 is double-decker, the internal layer of rear seal closure 17 can move back and forth by guiding mechanism 15 and screw-nut body 14 between main cylinder 5 and rear seal closure 17 bottoms, in the time that contacting with main cylinder 5, the internal layer of rear seal closure 17 completes sealing, now between main cylinder 5 and discharging opening 21, stopped in sealing state by the internal layer of rear seal closure 17, in the time that the internal layer of rear seal closure 17 contacts with rear seal closure 17 under screw-nut body 14 effects, now discharging opening 21 and main cylinder 5 are communicated with, and can complete discharging operation,
Gas communication system is used for preventing causing air pressure rising to cause accident to occur because inner pernicious gas cannot overflow, gas communication system is located on rear seal closure 17, gas communication system comprises pneumatic filter 16, breather pipe 23 and two-way air exhauster 24, two-way air exhauster 24 is located in main cylinder 5, the gas outlet of two-way air exhauster 24 connects breather pipe 23, and breather pipe 23 is seal closure 17 and the rear connection pneumatic filter 16 of front seal closure 4 after passing successively; Internal gas can import pneumatic filter 16 through breather pipe 23 by two-way air exhauster 24, processes after filtration and confirms after harmless to enter atmosphere; Gas extraction system also can be reverse main cylinder 5 that catalytic gas is imported participate in reaction;
Charging support 3, main cylinder 5, gear-box 6, the support of bearing 9, heater 10, industrial computer 11, motor 32 and impact support 35 and be all located on job platform 7;
Control system is mainly that whole workflow is controlled, and control system comprises an industrial computer 11, and industrial computer 11 connects electrically heated rod 28 and the motor 32 of flour mill 2, heater 10 by holding wire.Industrial computer 11 can, according to parameters such as the procedure auto-control temperature arranging, rotating speed, times, also can carry out manual operation.
The present embodiment is also provided with wind 8, and driven gear 20 is also connected with wind 8 in gear-box 6, and the handle end of wind 8 is located at outside gear-box 6.Wind 8 is set and can in the time of power-off, hand operation completes discharging, prevent that the raw material of heating is inner bonding at main cylinder 5.
In the present embodiment, the transmission device 6 between motor 32 and flour mill 2 is selected belt transmission.
The present embodiment adopts high-tech heat conduction and thermal resistance material, can effectively reduce energy consumption, and the production procedure of automation has simultaneously improved production efficiency greatly.
Claims (5)
1. a multipurpose rotary kiln, comprises main cylinder (5), it is characterized in that: also comprise heater (10), revolution support, rotary motive power device, feed arrangement, beating unit, sealing device and the gas system for the distribution of commodities,
Main cylinder (5) comprises high temperature resistant spiral striker plate (22), high-temperature alloy steel cylinder (27), heat-conducting layer (29) and discharge bucket (13), high temperature resistant spiral striker plate (22) is arranged on high-temperature alloy steel cylinder (27) inside, heat-conducting layer (29) is fixed on high-temperature alloy steel cylinder (27) outside, the bottom of high-temperature alloy steel cylinder (27) one end is provided with discharging opening (21), and discharging opening (21) connects and is connected with discharge bucket (13);
Heater (10) comprises electrically heated rod (28), sealing ring (12) and heat resistant layer (30), electrically heated rod (28) is located on the barrel of high-temperature alloy steel cylinder (27), sealing ring (12) is embedded in the two ends of high-temperature alloy steel cylinder (27), and heat resistant layer is coated on outside electrically heated rod (28);
Revolution is supported and is comprised 4 angular contact ball bearings (19) and the support of bearing (9) composition, high-temperature alloy steel cylinder (27) is enclosed within the inner ring of 4 angular contact ball bearings (19), and the outer ring sleeve of 4 angular contact ball bearings (19) is in the support of bearing (9);
Rotary motive power device comprises driving gear (26), gear-box (6) and driven gear (20), driving gear (26) and driven gear (20) are all located in gear-box (6), the central shaft of driving gear (26) and the output shaft of motor are connected, the gear teeth meshing of the gear teeth of driven gear (20) and driving gear (26), the central shaft of driven gear (20) is connected with the central shaft of main cylinder (5);
Feed arrangement comprises feed hopper (1), flour mill (2), motor (32), transmission device (6), charging support (3) and feeding seal baffle plate (25), the output shaft of motor (32) connects the central shaft of flour mill (2) by transmission device (6), the just charging aperture to flour mill (2) of the discharging opening of feed hopper (1), the discharging opening of flour mill (2) connects the charging aperture of high-temperature alloy steel cylinder (27), between flour mill (2) discharging opening and high-temperature alloy steel cylinder (27) charging aperture, be provided with feeding seal baffle plate (25), flour mill (2), motor (32) and transmission device (6) are all located on charging support (3),
Beating unit includes hammer (38), connecting rod (37), torsion spring (36), impact support (35), roller (33), roller shaft (34) and guide rail (18), hammer (38) is fixed on one end of connecting rod (37), roller (33) is fixed on the other end of connecting rod (37) by roller shaft (34), the centre of connecting rod (37) is fixed on and is impacted on support (35) by torsion spring (36), form a leverage with elastic restoring force, guide rail (18) coiling is fixed on the lateral wall of main cylinder (5), the cross section of guide rail (18) is lobe (181) and groove (182) shape at interval successively, roller (33) is fitted in the upper rolling of guide rail (18), in the time that the lobe (181) on guide rail (18) contacts with roller (33), just in time impacted on main cylinder (5) by leverage hammer (38), in the time that the groove (182) on guide rail (18) contacts with roller (33), under the twisting resistance effect of torsion spring (36), hammer (38) is left main cylinder (5), so repeatedly complete the process of impacting,
Sealing device comprises front seal closure (4) and rear seal closure (17), front seal closure (4) all passes through the interior bearing of the support of bearing (9) with rear seal closure (17) and is connected with main cylinder (5) with sealing ring (12), wherein, rear seal closure (17) is double-decker, the internal layer of rear seal closure (17) can move back and forth by guiding mechanism (15) and screw-nut body (14) between main cylinder (5) and rear seal closure (17) bottom, in the time that contacting with main cylinder (5), the internal layer of rear seal closure (17) completes sealing, now between main cylinder (5) and discharging opening (21), stopped in sealing state by the internal layer of rear seal closure (17), in the time that the internal layer of rear seal closure (17) contacts with rear seal closure (17) under screw-nut body (14) effect, now discharging opening (21) and main cylinder (5) are communicated with, and complete discharging operation,
Gas communication system is located on rear seal closure (17), gas communication system comprises pneumatic filter (16), breather pipe (23) and two-way air exhauster (24), two-way air exhauster (24) is located in main cylinder (5), the gas outlet of two-way air exhauster (24) connects breather pipe (23), and breather pipe (23) is seal closure (17) and the rear pneumatic filter (16) that is connected of front seal closure (4) after passing successively;
Charging support (3), main cylinder (5), gear-box (6), the support of bearing (9), heater (10), industrial computer (11), motor (32) and impact support (35) and be all located on job platform (7).
2. multipurpose rotary kiln as claimed in claim 1, it is characterized in that: also comprise control system, control system comprises an industrial computer (11), and industrial computer (11) connects electrically heated rod (28) and the motor (32) of flour mill (2), heater (10) by holding wire.
3. multipurpose rotary kiln as claimed in claim 1 or 2, it is characterized in that: also comprise wind (8), driven gear (20) is also connected with wind (8) in gear-box (6), and the handle end of wind (8) is located at outside gear-box (6).
4. multipurpose rotary kiln as claimed in claim 1 or 2, is characterized in that: the transmission device (6) between motor (32) and flour mill (2) is selected belt transmission.
5. multipurpose rotary kiln as claimed in claim 3, is characterized in that: the transmission device (6) between motor (32) and flour mill (2) is selected belt transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796835.3U CN203642670U (en) | 2013-12-06 | 2013-12-06 | Multipurpose rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320796835.3U CN203642670U (en) | 2013-12-06 | 2013-12-06 | Multipurpose rotary kiln |
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| CN203642670U true CN203642670U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320796835.3U Expired - Fee Related CN203642670U (en) | 2013-12-06 | 2013-12-06 | Multipurpose rotary kiln |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605891A (en) * | 2015-12-23 | 2016-05-25 | 河南豫光冶金机械制造有限公司 | Electric heating drying kiln |
| CN106813500A (en) * | 2015-11-27 | 2017-06-09 | 湖南鼎玖能源环境科技有限公司 | Swing type rotary furnace and its assistant steering device |
| CN107388817A (en) * | 2017-08-02 | 2017-11-24 | 合肥四书电子商务有限公司 | A kind of manufacture of cement rotary kiln |
| CN109037633A (en) * | 2018-07-31 | 2018-12-18 | 湖南德景源科技有限公司 | A method of the modified nickelic positive electrode of production is heat-treated using rotary kiln |
| CN113883889A (en) * | 2021-10-26 | 2022-01-04 | 小跃科技(北京)有限公司 | Cooling system of external combustion type rotary kiln sealing structure utilizing substance decomposition |
-
2013
- 2013-12-06 CN CN201320796835.3U patent/CN203642670U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813500A (en) * | 2015-11-27 | 2017-06-09 | 湖南鼎玖能源环境科技有限公司 | Swing type rotary furnace and its assistant steering device |
| CN105605891A (en) * | 2015-12-23 | 2016-05-25 | 河南豫光冶金机械制造有限公司 | Electric heating drying kiln |
| CN107388817A (en) * | 2017-08-02 | 2017-11-24 | 合肥四书电子商务有限公司 | A kind of manufacture of cement rotary kiln |
| CN107388817B (en) * | 2017-08-02 | 2019-05-28 | 黄石市四棵水泥厂 | A kind of manufacture of cement rotary kiln |
| CN109037633A (en) * | 2018-07-31 | 2018-12-18 | 湖南德景源科技有限公司 | A method of the modified nickelic positive electrode of production is heat-treated using rotary kiln |
| CN113883889A (en) * | 2021-10-26 | 2022-01-04 | 小跃科技(北京)有限公司 | Cooling system of external combustion type rotary kiln sealing structure utilizing substance decomposition |
| CN113883889B (en) * | 2021-10-26 | 2022-03-15 | 小跃科技(北京)有限公司 | Cooling system of external combustion type rotary kiln sealing structure utilizing substance decomposition |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGXIA YINYI MATERIAL RECYCLING CO., LTD. Free format text: FORMER NAME: QINGTONGXIA JUXIN METALLURGICAL CHEMICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 751600 the Ningxia Hui Autonomous Region Qingtongxia new material base industrial park Patentee after: Ningxia Yi silver material recycling Limited by Share Ltd Address before: 751600 the Ningxia Hui Autonomous Region Qingtongxia new material base industrial park Patentee before: QINGTONGXIA JUXIN METALLURGICAL CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20151206 |
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| EXPY | Termination of patent right or utility model |