CN102718216B - Rotary barrel type afterheat recovering and cake one-step molding-transmitting device - Google Patents
Rotary barrel type afterheat recovering and cake one-step molding-transmitting device Download PDFInfo
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- CN102718216B CN102718216B CN201210194947.1A CN201210194947A CN102718216B CN 102718216 B CN102718216 B CN 102718216B CN 201210194947 A CN201210194947 A CN 201210194947A CN 102718216 B CN102718216 B CN 102718216B
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- ring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention provides a rotary barrel type afterheat recovering and cake one-step molding-transmitting device which is characterized by comprising an expansion cylinder forming device, wherein the expansion cylinder forming device comprises an expansion cylinder body, a driving device and wheel supporting devices, wherein the expansion cylinder body is slantwise supported by the two wheel supporting devices; the high end and the low end of the expansion cylinder body are respectively provided with a charging port and a discharging port; and the peripheral surface of the expansion cylinder body is provided with the driving device and the wheel supporting devices. The device has the advantages that afterheat in a liquid material such as calcium carbide lump can be effectively recovered; the recovered afterheat can be recycled in a manner of seam; the calcium carbide lump cooling time can be greatly shortened; and the formation of power caused by the artificial crushing of calcium carbide can be avoided, and the manpower and the site occupancy of a workshop can be saved.
Description
Technical field
The present invention relates to the waste heat recovery of a kind of rotation cartridge type and block once shaped transmitting device, be mainly used in waste heat recovery and solid once shaped and the transmission of the high-temperature materials such as liquid calcium carbide.
Background technology
Calcium carbide is carbide of calcium, is mineral compound, and clear crystal, is important basic chemical raw materials, mainly for generation of acetylene gas.Also for organic synthesis, oxycetylene welding etc.
Calcium carbide finished product cooling and broken be a difficult problem for a long-term puzzlement calcium carbide enterprise.The tapping temperature of the calcium carbide melt flowing out from the plug for outlet of electrothermal oven (discharge electrode is housed in it) is up to 1800 ℃-2200 ℃, the technique generally adopting is now for to place a plurality of cooling pans at plug for outlet, calcium carbide melt directly enters cooling pan after coming out of the stove, when cooling pan fills with after liquid calcium carbide, travelling bogie is transported to cooling pan between cooling vehicle through conveying track, arrive between cooling vehicle after by cooling pan standing or with high wind to its cooling down.After liquid calcium carbide is cooling, become solid-state calcium carbide stone roller, meet the requirements of temperature, solid-state calcium carbide stone roller is transported to crushing plant, carry out hand breaking.In cooling forming shattering process after above-mentioned calcium carbide melt is come out of the stove, there is following shortcoming:
1) cause the loss of a large amount of high temperature calcium carbide waste heats, also taken very large production space;
2) calcium carbide is longer cooling time that sticks together, and probably need just can carry out fragmentation after cooling through 26 hours, and production efficiency is low;
3) calcium carbide in nature or thundery rain process of cooling belongs to open placement, meets water intense reaction occurs immediately because of calcium carbide, has great potential safety hazard;
4) cooled calcium carbide sticks together needs hand breaking, and shattering process can cause 15 ~ 25% powder loss, the loss that has produced calcium carbide product on the one hand; Also increased on the other hand workshop man power and material's input.
Summary of the invention
The present invention aims to provide the waste heat recovery of a kind of rotation cartridge type and block one-shot forming apparatus, and low to solve the production efficiency that prior art exists, area occupied is large, and workman's labour intensity is large, and in situ temperature is high, wastes energy and the problem of hidden danger.
Technical scheme of the present invention is: the waste heat recovery of a kind of rotation cartridge type and block once shaped transmitting device, it is characterized in that, comprise cylinder shaped device, this cylinder shaped device comprises roller tube, drive unit and riding wheel apparatus, and roller tube is supported obliquely by two riding wheel apparatus; In the higher-end of this roller tube be respectively equipped with opening for feed and discharge port compared with low side; Periphery at this roller tube is equipped with drive unit and riding wheel apparatus.
Inner peripheral surface at described roller tube is provided with refractory lining, and liner inside is provided with grasp, at the inner face of this refractory lining, is provided with forming tank.
In the higher-end of this roller tube 4 with compared with the periphery of low side, water ring and water inlet ring are housed out respectively, are going out on water ring and water inlet ring to be respectively equipped with water outlet and water-in; Centre at described roller tube is provided with water interlayer, and the two ends of this water interlayer are communicated with water outlet and water-in respectively.
Described water interlayer 41 is separated into a plurality of rectangular channels vertically.
It is described that to go out water ring identical with the structure of water inlet ring, comprise outer shroud, interior ring, cylinder ring, ball and wear ring, cylinder ring is connected with roller tube, on this cylinder ring, be provided with cylinder ring radial hole, the inner of radial hole communicates with described water interlayer by being located at the axial aquaporin of cylinder ring inner side; Ring within the periphery of cylinder ring connects is provided with interior ring radial hole on interior ring; Periphery at this interior ring is connected with outer shroud rotary seal with wear ring by ball, is provided with groove between inner and outer ring; Described water outlet or water-in are located on this outer shroud.
In the rear end of described roller tube, be socketed a discharge end, described discharge port be located at this discharge end below, discharge end does not rotate with roller tube.
Periphery at described roller tube is equipped with drum gear; Described drive unit comprises driving toothed gear, drive-motor, variator and driving base, and driving toothed gear supports to be arranged on and drives on base, and meshes with described drum gear; The output shaft of drive-motor is in transmission connection by variator and driving toothed gear.
At the periphery of described roller tube, be at least provided with the cylindrical shell track of two hole enlargements, one group of riding wheel apparatus is respectively housed below each cylindrical shell track, this riding wheel apparatus comprises support roller base, a pair of support roller and a pair of position-limited wheel, and support roller and position-limited wheel are rotatably supported on support roller base; A pair of support roller is located at respectively the both sides below of cylindrical shell track, and the periphery of support roller and cylindrical shell track is tangent.
Also comprise the axially movable position-limited wheel of a pair of restriction roller tube, this position-limited wheel is rotatably installed on support roller base, lays respectively at the both sides of cylindrical shell track lower end.
Discharge port one end at described cylinder shaped device is provided with lift, and the entrance of its lower end is corresponding with the discharge port of cylinder shaped device; On the described side that is provided with lift, be provided with feed bin, the outlet of lift upper end is corresponding with the upper port of this feed bin; At this feed bin, level gage is housed, the drain hole in this feed bin lower end is equipped with motorized valve, can quantitatively to material mover, emit material.
Advantage of the present invention is: can effectively reclaim the waste heat that calcium carbide sticks together etc. in liquid material; Waste heat after recovery carries out recycle with vapor form; Greatly having shortened calcium carbide sticks together the cooling time; Avoid the powder causing because of hand breaking calcium carbide to form, saved taking of workshop manpower and place.
Accompanying drawing explanation
Fig. 1 is that one embodiment of the present of invention totally form schematic diagram;
Fig. 2 is the axial sectional view (feed-water end and water side are local) of cylinder of the present invention;
Fig. 3 is the partial enlarged drawing at feed-water end place in Fig. 2;
Fig. 4 is the A-A sectional view of Fig. 1;
Fig. 5 is the B-B sectional view of Fig. 1;
Fig. 6 is the C-C sectional view (groove structure of inner wall of rotary drum, containing circulation waterway) of Fig. 1.
Fig. 7 is Application Example of the present invention.
Description of reference numerals: 1, cylindrical shell opening for feed, 2, go out water ring, 21, water outlet, 3, cylindrical shell track, 4, roller tube, 41, water interlayer, 42, the refractory lining of inner wall of rotary drum, 43, forming tank, 44, liner grasp, 5, drive unit, 51, driving toothed gear, 52, drive-motor, 53, drive base, 6, drum gear, 61, drum gear mounting block, 7, riding wheel apparatus, 71, support roller, 72, support roller base, 73, position-limited wheel, 8, water inlet ring, 80, interior ring radial hole, 81, water-in, 82, outer shroud, 83, interior ring, 84, cylinder ring, 85, ball, 86, wear ring, 87, cylinder ring radial hole, 88, the axial aquaporin of cylinder ring, 89, groove between inner and outer ring, 9, discharge end, 91, discharge port, 10, smelting furnace electrode, 20, smelting furnace body of heater, 30, fire damper, 40, plug for outlet, 50, the platform of coming out of the stove, 60, cylinder shaped device, 70, lift entrance, 90, lift, 95, feed bin, 100, level gage, 110, motorized valve, 120, material mover.
Embodiment
An a kind of embodiment who rotates cartridge type waste heat recovery and block once shaped transmitting device of the present invention is the cylinder shaped device shown in Fig. 1～Fig. 6, this cylinder shaped device comprises roller tube 4, drive unit 5 and riding wheel apparatus 7, and roller tube 4 is supported obliquely by two riding wheel apparatus 7; In the higher-end of this roller tube 4 be respectively equipped with opening for feed 1 and discharge port 91 compared with low side; Periphery at this roller tube 4 is equipped with drive unit 5 and riding wheel apparatus 7.
Referring to Fig. 6, inner peripheral surface at described roller tube 4 is provided with refractory lining 42, inner peripheral surface at this refractory lining is provided with forming tank 43, in the inside of liner 42, be provided with grasp 44, the tinsel that grasp 44 is Y shape, the metal inner surface welding of its lower end and roller tube 4, for anchoring refractory lining 42, is combined it securely with cylindrical shell.Forming tank 43 can be groove vertically, but also vertically with the groove intersecting in length and breadth of circumference.The feature of these forming tank 43 structures is that bottom is little, suitable for reading large, and this structure is very beneficial for becoming solid-state calcium carbide deviates from, and reaches the one-time formed object of solid-state calcium carbide.Refractory lining 42 and forming tank 43 can only be located at half portion or the more than half portion that roller tube 4 is adjacent with opening for feed 1.
Referring to Fig. 1-Fig. 3, in the higher-end of this roller tube 4 with compared with the periphery of low side, water ring 2 and water inlet ring 8 are housed out respectively, going out on water ring 2 and water inlet ring 8 to be respectively equipped with water outlet 21 and water-in 81, by flange-interface, be connected with outside cooling water recirculation system.In the centre of described roller tube 4, be provided with water interlayer 41, the two ends of this water interlayer 41 are communicated with water outlet 21 and water-in 81 respectively.Described water interlayer 41 is welded on cylinder body outer wall by angle steel or bending steel plate, is divided into a plurality of rectangular channels (Fig. 4) vertically.
Described to go out water ring 2 identical with the structure of water inlet ring 8, is equivalent to the effect of bearing, and provide placement for water outlet 21 or the water-in 81 of recirculated water.Take below water inlet ring 8 illustrates its structure as example:
When roller tube 4 rotation, interior ring 83 rotates with cylindrical shell with cylinder ring 84; Outer shroud 82 transfixions.When cold water enters from water-in 81, enter between inner and outer ring and be provided with in annular groove 89, and by the axial aquaporin (gap) 88 of interior ring radial hole 80, cylinder ring radial hole 87 and cylinder ring 84 inner sides, enter into water interlayer 41 cold water pathway of cylinder body outer wall, then from the water outlet that goes out water ring 2 21 of the other end of cylindrical shell, flow out, thereby realize cold water and barrel heat exchange, reach the object of cooling calcium carbide.The energy derive that the hot water flowing out or hot steam can be used as generating or directly utilize hot water or hot steam, thus energy utilization efficiency improved, saved the energy.
In the rear end of described roller tube 4, be socketed a discharge end 9, described discharge port 91 be located at this discharge end 9 below, discharge end 9 does not rotate (referring to Fig. 1 and Fig. 2) with roller tube.
Referring to Fig. 5, at the periphery of described roller tube 4, by drum gear mounting block 61(, be similar to the structure of vehicle wheel spoke) mounting rotary drum gear 6; Described drive unit 5 comprises driving toothed gear 51, drive-motor 52, variator 54 and driving base 53, and driving toothed gear 51 supports to be arranged on and drives on base 53, and meshes with described drum gear 6; The output shaft of drive-motor 52 is in transmission connection by variator 54 and driving toothed gear 51.
Referring to Fig. 4, at the periphery of described roller tube 4, be at least provided with the cylindrical shell track 3 of two hole enlargements, one group of riding wheel apparatus 7 is respectively housed below each cylindrical shell track 3, this riding wheel apparatus 7 comprises support roller base 72, a pair of support roller 71 and a pair of position-limited wheel 73, and support roller 71 and position-limited wheel 73 are rotatably supported on support roller base 72; A pair of support roller 71 is located at respectively the both sides below of cylindrical shell track 3, and support roller 71 is tangent with the periphery of cylindrical shell track 3.On the support roller base 72 of the riding wheel apparatus 7 on the right side, also rotate a pair of position-limited wheel 73 is installed, a pair of position-limited wheel 73 is located at respectively the both sides of cylindrical shell track 3 lower ends, and restriction roller tube 4 moves axially.Two groups of riding wheel apparatus 7 can be installed mounting limit wheel 73.
Referring to Fig. 7, cylinder shaped device 60 of the present invention is mounted obliquely within the side of smelting furnace body of heater 20 in use, and (opening for feed one end is higher, angle of inclination is 5-15 degree), and make the plug for outlet 40 of smelting furnace body of heater 20 and the opening for feed 1 of cylinder shaped device 60 corresponding.
Also can be provided with lift 90 in discharge port one end of described cylinder shaped device 60, the entrance 70 of lift 90 lower ends is corresponding with the discharge port 91 of cylinder shaped device 60.
On the described side that is provided with lift 90, be provided with feed bin 95, the outlet of lift 90 upper ends is corresponding with the upper port of this feed bin 95; At this feed bin 95, level gage 100 is housed, the drain hole in these feed bin 95 lower ends is equipped with motorized valve 110, can quantitatively to material mover 120, emit material.
The working process of cylinder shaped device 60 of the present invention is:
1, roller tube 4 is supported by riding wheel apparatus 7, by drive unit 5, drive rotation, when liquid calcium carbide is from opening for feed 1 flows into, the forming tank 43 of inner wall of rotary drum will be full of, liquid calcium carbide becomes solid-state gradually, along with the rotation of roller tube 4, the solid-state calcium carbide in forming tank 43, because the factors such as gravity will be deviate from groove, has reached the object of a formed solid of calcium carbide.
2, along with the rotation of roller tube 4, calcium carbide constantly moves (because cylindrical shell tilts) to cooling cylinder rear end, high temperature calcium carbide passes to cylinder inboard wall by most of heat, the heat of barrel can absorb and take away by the interior mobile recirculated water of water interlayer 41 again, completed the heat exchange of high temperature calcium carbide, barrel, cold water.The cold water that has absorbed the most of waste heat of calcium carbide, has become hot water and steam, can carry out other technical process or generating etc., has realized the utilization of waste heat.
Claims (8)
1. rotation cartridge type waste heat recovery and a block once shaped transmitting device, is characterized in that, comprise cylinder shaped device, this cylinder shaped device comprises roller tube, drive unit and riding wheel apparatus, and roller tube is supported obliquely by two riding wheel apparatus; In the higher-end of this roller tube be respectively equipped with opening for feed and discharge port compared with low side; Periphery at this roller tube is equipped with drive unit and riding wheel apparatus; In the higher-end of this roller tube with compared with the periphery of low side, water ring and water inlet ring are housed out respectively, are going out on water ring and water inlet ring to be respectively equipped with water outlet and water-in; Centre at described roller tube is provided with water interlayer, and the two ends of this water interlayer are communicated with water outlet and water-in respectively; It is described that to go out water ring identical with the structure of water inlet ring, comprise outer shroud, interior ring, cylinder ring, ball and wear ring, cylinder ring is connected with roller tube, on this cylinder ring, be provided with cylinder ring radial hole, the inner of radial hole communicates with described water interlayer by being located at the axial aquaporin of cylinder ring inner side; Ring within the periphery of cylinder ring connects is provided with interior ring radial hole on interior ring; Periphery at this interior ring is connected with outer shroud rotary seal with wear ring by ball, is provided with groove between inner and outer ring; Described water outlet or water-in are located on this outer shroud.
2. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, is characterized in that, at the inner peripheral surface of described roller tube, is provided with refractory lining, and liner inside is provided with grasp, at the inner face of this refractory lining, is provided with forming tank.
3. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, is characterized in that, described water interlayer is separated into a plurality of rectangular channels vertically.
4. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, it is characterized in that, in the rear end of described roller tube, be socketed a discharge end, described discharge port be located at this discharge end below, discharge end does not rotate with roller tube.
5. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, is characterized in that, at the periphery of described roller tube, drum gear is housed; Described drive unit comprises driving toothed gear, drive-motor, variator and driving base, and driving toothed gear supports to be arranged on and drives on base, and meshes with described drum gear; The output shaft of drive-motor is in transmission connection by variator and driving toothed gear.
6. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, it is characterized in that, at the periphery of described roller tube, be at least provided with the cylindrical shell track of two hole enlargements, one group of riding wheel apparatus is respectively housed below each cylindrical shell track, this riding wheel apparatus comprises support roller base, a pair of support roller and a pair of position-limited wheel, and support roller and position-limited wheel are rotatably supported on support roller base; A pair of support roller is located at respectively the both sides below of cylindrical shell track, and the periphery of support roller and cylindrical shell track is tangent.
7. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, it is characterized in that, also comprise the axially movable position-limited wheel of a pair of restriction roller tube, this position-limited wheel is rotatably installed on support roller base, lays respectively at the both sides of cylindrical shell track lower end.
8. rotation cartridge type according to claim 1 waste heat recovery and block once shaped transmitting device, is characterized in that, in discharge port one end of described cylinder shaped device, is provided with lift, and the entrance of its lower end is corresponding with the discharge port of cylinder shaped device; On the described side that is provided with lift, be provided with feed bin, the outlet of lift upper end is corresponding with the upper port of this feed bin; At this feed bin, level gage is housed, the drain hole in this feed bin lower end is equipped with motorized valve, can quantitatively to material mover, emit material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194947.1A CN102718216B (en) | 2012-06-14 | 2012-06-14 | Rotary barrel type afterheat recovering and cake one-step molding-transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194947.1A CN102718216B (en) | 2012-06-14 | 2012-06-14 | Rotary barrel type afterheat recovering and cake one-step molding-transmitting device |
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| Publication Number | Publication Date |
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| CN102718216A CN102718216A (en) | 2012-10-10 |
| CN102718216B true CN102718216B (en) | 2014-04-09 |
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| CN201210194947.1A Expired - Fee Related CN102718216B (en) | 2012-06-14 | 2012-06-14 | Rotary barrel type afterheat recovering and cake one-step molding-transmitting device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279896A (en) * | 2013-07-04 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Cooling machine |
| CN104418627A (en) * | 2013-08-29 | 2015-03-18 | 南通新源特种纤维有限公司 | Middle structure of cooler |
| CN104422317A (en) * | 2013-08-29 | 2015-03-18 | 南通新源特种纤维有限公司 | Cooler front structure |
| CN104108717B (en) * | 2014-05-19 | 2017-01-11 | 顾君尧 | Calcium carbide cooling molding and waste heat utilization method |
| CN105414894A (en) * | 2015-12-04 | 2016-03-23 | 武汉钢铁(集团)公司 | Manufacturing method for annular rail in drum |
| CN108785859A (en) * | 2018-08-01 | 2018-11-13 | 深圳市奥沃医学新技术发展有限公司 | Rotary frame and radiotherapy apparatus |
| CN109499742A (en) * | 2018-12-19 | 2019-03-22 | 上海妍杰机械工程有限公司 | A kind of efficient log washer |
| CN111319163A (en) * | 2020-03-09 | 2020-06-23 | 句容新易捷环保设备有限公司 | Waste plastic bottle cleaning device |
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| GB825814A (en) * | 1958-03-03 | 1959-12-23 | Link Belt Co | Improvements in or relating to rotary coolers |
| US5042402A (en) * | 1990-08-15 | 1991-08-27 | Tampella Keeler Incorporated | Multi-sided watercooled rotary combustor |
| CN200986398Y (en) * | 2007-07-18 | 2007-12-05 | 中国恩菲工程技术有限公司 | Highly effective turning cylinder cooling machine |
| CN101655312A (en) * | 2009-09-11 | 2010-02-24 | 中冶赛迪工程技术股份有限公司 | Water cooling device and method of rotary kiln shell |
| CN202274755U (en) * | 2011-10-12 | 2012-06-13 | 青岛松灵电力环保设备有限公司 | A calcined coke cooling apparatus |
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| WO1996024810A1 (en) * | 1995-02-01 | 1996-08-15 | Stamet, Inc. | Method and system for handling and transporting hot ash and particulate material and controlling the bed of a fluidized bed apparatus |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB566761A (en) * | 1942-07-21 | 1945-01-12 | Traylor Engineering & Mfg Comp | Improvements in apparatus for cooling materials discharged from kilns |
| GB825814A (en) * | 1958-03-03 | 1959-12-23 | Link Belt Co | Improvements in or relating to rotary coolers |
| US5042402A (en) * | 1990-08-15 | 1991-08-27 | Tampella Keeler Incorporated | Multi-sided watercooled rotary combustor |
| CN200986398Y (en) * | 2007-07-18 | 2007-12-05 | 中国恩菲工程技术有限公司 | Highly effective turning cylinder cooling machine |
| CN101655312A (en) * | 2009-09-11 | 2010-02-24 | 中冶赛迪工程技术股份有限公司 | Water cooling device and method of rotary kiln shell |
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