CN103398556A - Material drying processing system - Google Patents
Material drying processing system Download PDFInfo
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- CN103398556A CN103398556A CN201310348363XA CN201310348363A CN103398556A CN 103398556 A CN103398556 A CN 103398556A CN 201310348363X A CN201310348363X A CN 201310348363XA CN 201310348363 A CN201310348363 A CN 201310348363A CN 103398556 A CN103398556 A CN 103398556A
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Abstract
The invention discloses a material drying processing system. The material drying processing system comprises a machine frame. A burner, a supporting device and a power driving device are arranged on the machine frame, a roller is rotatably arranged on the supporting device and is connected with the power driving device in a transmission mode, a fire spraying nozzle of the burner extends into the roller through one end of the roller, one end, above the fire spraying nozzle, of the roller is provided with a feeding hopper, the upper portion and the lower portion of the other end of the roller are provided with an air suction port and a discharge port respectively, and the air suction port is connected with a dust collection device. The material drying processing system is reasonable in design, simple in structure, low in cost, large in processing capacity, short in material drying period, high in drying degree and automation degree, saving in energy, friendly to the environment, high in practicability and worth popularizing and applying, and the drying processing is carried out in a whole sealing mode.
Description
Technical field
The invention belongs to the industrial production technology field, relate in particular to a kind of drying materials treatment system that the larger material of moisture content is dried.
Background technology
In industrial processes, the material that moisture content is larger generally all will use dryer equipment in the dehydration link, and dryer equipment is divided into industrial stoving equipment and civilian drying plant.
Industrial stoving equipment belongs to mining machinery, generally mostly is large and medium-sized machinery, and its thermal source, from burner, adopts the downflow type mode of heating.Therefore need the material of oven dry, slip into into cylindrical shell from material feeding box, charging, after namely by the spiral flight, being pushed to.Due to the dryer slant setting, material is to the back-end dirty at gravity and gyroscopic action on the one hand, material is taken up repeatedly by flight on the other hand, bringing to upper end constantly raises and spreads again, make material form uniform curtain in cylinder, fully with an interior thermal current, carry out heat exchange, because material is repeatedly raised and spread, contained moisture is dried gradually, thereby reaches the purpose of oven dry.
Civilian drying plant belongs to washing machine, generally after rinse dehydration, is used for removing the moisture in clothes and other textiles.Most dryer comprises the cylinder of a rotation, and inner core is by belt drives, has hot-air to be used for transpiring moisture around cylinder.Drying is all the principle that adopts the cylinder rotating, what reach drying article is not wound around effect, and the dryer of early stage use has been eliminated now basically, and modern oven dry adopts computer automatically to control, can, according to drying requirement, configure different bake out temperature and drying time.Cylinder adopts the stainless steel bright plate of excellent heat resistance to be made, and inner wall smooth, can reduce the wearing and tearing of clothing.High-efficiency radiator, and be equipped with rational wind channel, make hot blast directly and contact with clothing, greatly improved drying efficiency, saved simultaneously the energy.The major diameter feeding mouth, facilitated into and out of clothing.Large-area lint collecting net, be not easy to cause lint to stop up, and protected the unimpeded of air channel, thereby improved greatly drying efficiency.
The industrial stoving machine equipment is widely used in the industries such as mine, building materials, highway, bridge, coal, metallurgy, chemical industry, anti-material.Be mainly used in moist large, the heavy materials such as slag, lime stone, clay, river sand, quartz sand, grain slag.
The particular type of industrial stoving machine equipment comprises: industrial drier, sludge dryer, coal slurry drying-machine, horizontal drying machine, three-cylinder drier, iron powder dryer, excrement class dryer, foodstuff drying device, desulfurated plaster dryer, slag drying machine, quartz sand dryer, rotary drum drying machine, roller drying machine, brown coal dryer, tower drier etc.
Industrial stoving equipment possesses following three indexs at the function needs that meet drying and processing:
One, gross efficiency: also can be described as average efficiency, the Dust Capacity that namely in the same time, dryer is removed and the percentage of the Dust Capacity that flows into from the dryer import.Two, percent of pass: percent of pass refers to the percentage of dryer outlet Dust Capacity and import Dust Capacity.Percent of pass is larger, illustrates that the Dust Capacity that exports from dryer is larger, and namely drying efficiency is lower.In addition, when the drying efficiency of dryer is very high, with percent of pass, represent that difference on the dryer performance is more obvious while than with gross efficiency, representing.Three, classification drying efficiency: the dryer efficiency that the classification drying efficiency is demarcated by dust size or particle size range is called classification efficiency, and it refers in a certain particle size range, the ratio of the Dust Capacity that is captured and import dust total amount.The oven dry gross efficiency of dryer and the particle diameter of processed dust have much relations, even same device is worked under same service condition, due to the difference of dust dispersity, the performance of dryer also has significant difference.
Above various industrial material drying plant when meeting above-mentioned three important indicators as far as possible, the defect such as have to some extent complex structure, program is loaded down with trivial details, cost is high, drying and processing efficiency is low, drying effect is bad, dust pollution is large, use cost is high.
Summary of the invention
The present invention is in order to solve weak point of the prior art, provide a kind of simple in structure, drying and processing is effective, drying efficiency is high, energy-conserving and environment-protective, drying materials treatment system that cost is low.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of drying materials treatment system, comprise frame, described frame is provided with burner, bracing or strutting arrangement and Power Drive Unit, rotate and be provided with cylinder on bracing or strutting arrangement, cylinder and Power Drive Unit are in transmission connection, the bocca of burner is extend in cylinder by an end of cylinder, one end of cylinder is provided with feed hopper above bocca, the upper and lower of the other end of cylinder is respectively equipped with suction opeing and discharging opening, and suction opeing is connected with dust arrester.
Described cylinder by feed hopper one end to the discharging opening one downward-sloping 3-5 ° of end, inner wall of rotary drum is provided with the heat-insulation layer of being made by castable, the fixing fixing end cap of end cap and discharging of rotating cylinder, charging in the middle of cylinder comprises, charging fixedly end cap and discharging fixedly end cap be connected by rotary seal structure with middle rotating cylinder respectively, middle rotating cylinder inwall is provided with lifting blade vertically.
In the middle of described rotary seal structure comprises, the rotating cylinder two ends plug respectively charging fixedly end cap and discharging fixedly in end cap, the outer wall of middle rotating cylinder respectively and charging fixedly end cap and discharging fixedly are provided with the seal sleeve of polyurethane material between the inwall of end cap, charging fixedly end cap, discharging fixedly is respectively equipped with baffle plate or the block that limits the seal sleeve position in the end of end cap, middle rotating cylinder, feed hopper is located at the charging stiff end and covers, discharging opening is located at fixedly end cap lower end of discharging, and suction opeing is located at the discharging stiff end and covers end.
Described dust arrester comprises dust cleaning case and air-introduced machine, the air inlet of air-introduced machine is connected with the air outlet of dust cleaning case by induced duct, the air inlet of dust cleaning case is connected with suction opeing by exhaust column, and the air outlet of air-introduced machine is connected with a stovepipe, and induced duct and/or exhaust column are provided with volume damper.
Described Power Drive Unit comprises drive motors, reductor, gear and bull gear, and in the middle of bull gear is located at, on rotating cylinder, the power drive end of drive motors is connected with gear drive by reductor, and gear and bull gear are connected with a joggle.
Described bracing or strutting arrangement comprises the base that is located at middle rotating cylinder both sides, rotates and is provided with support roller on base, and middle rotating cylinder is provided with the wheel rim that contacts and be rotatably assorted with support roller, and the support roller both sides are provided with gear wheel.
Described cylinder is provided with filter screen at the suction opeing place, and burner is provided with as the screw(-type) feeder of burner for fuel.
Also be provided with on described frame to the infeed belt conveyor of feed hopper convey materials and the outfeed belt conveyor of carrying the material that passes through discharging opening, the discharge end of infeed belt conveyor is positioned at the top of feed hopper, and the feed end of outfeed belt conveyor is positioned at the below of discharging opening.
adopt technique scheme, drive motors rotates by the reductor driven gear, in the middle of gear drives by bull gear, rotating cylinder rotates, charging fixedly end cap and discharging fixedly end cap maintain static, infeed belt conveyor with material in feed hopper is transported to cylinder, lifting blade is kicked up wet stock, carry to discharging opening, air-introduced machine with hot gas along taking out backward in rotating cylinder, under the stopping to large granular materials of filter screen, air-introduced machine is extracted dust and moisture out by suction opeing, enter into the dedusting of dust cleaning case place by exhaust column, then with the gas of dust, by induced duct and stovepipe, be not discharged in atmosphere, material rolls in middle rotating cylinder, simultaneously burner is to jet flames in cylinder, wet stock is heated, moisture is pumped, dry material is discharged to fall on outfeed belt conveyor by discharging opening and is transported to next process.Lifting blade plays wet stock is kicked up to fall and fully obtains the effect of drying; Heat-insulation layer plays the effect that in cylinder, heat runs off of avoiding; In the middle of rotary seal structure plays the rotating cylinder two ends respectively with the fixedly fixedly end cap effect that relatively rotates and seal of end cap and discharging of charging.Volume damper plays the effect of regulating exhausting amount size in cylinder.
The oven dry principle that the present invention adopts is: burner provides the downflow type heat in cylinder, drum-inclined is placed, material flows to discharge end on the one hand under gravity and gyroscopic action, material is taken up repeatedly by lifting blade on the other hand, brings to upper end and constantly raises and spread again, makes material form uniform curtain in cylinder, thermal current abundant and that cylinder is interior carries out heat exchange, because material is repeatedly raised and spread, contained moisture is dried gradually, thereby reaches the purpose of oven dry.
The present invention is reasonable in design, simple in structure, cost is low, treating capacity is large, the drying materials cycle is shorter, degree of drying is strong, automaticity is high, and drying and processing is totally-enclosed operation, and energy-conserving and environment-protective are practical, are worthy of popularization.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the fixing structural representation of the rotary seal structure of end caps of charging in Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2, a kind of drying materials treatment system of the present invention, comprise frame 1, frame 1 is provided with burner 2, bracing or strutting arrangement and Power Drive Unit, rotates and is provided with cylinder on bracing or strutting arrangement, and cylinder and Power Drive Unit are in transmission connection, the bocca 3 of burner 2 is extend in cylinder by an end of cylinder, one end of cylinder is provided with feed hopper 4 above bocca 3, the upper and lower of the other end of cylinder is respectively equipped with suction opeing 5 and discharging opening 6, and suction opeing 5 is connected with dust arrester.Cylinder is provided with filter screen 29 at suction opeing 5 places, and burner 2 is provided with as the screw(-type) feeder 32 of burner 2 for fuel.
Cylinder by feed hopper 4 one ends to the discharging opening 6 one downward-sloping 3-5 ° of end, preferred 5 °, inner wall of rotary drum is provided with the heat-insulation layer 7 of being made by castable, the fixing fixing end cap 10 of end cap 9 and discharging of rotating cylinder 8, charging in the middle of cylinder comprises, charging fixedly end cap 9 and discharging fixedly end cap 10 be connected by rotary seal structure 11 with middle rotating cylinder 8 respectively, middle rotating cylinder 8 inwalls are provided with lifting blade 12 vertically.
in the middle of rotary seal structure 11 comprises, rotating cylinder 8 two ends plug respectively charging fixedly end cap 9 and discharging fixedly in end cap 10, the outer wall of middle rotating cylinder 8 respectively and charging fixedly end cap 9 and discharging fixedly are provided with the seal sleeve 13 of polyurethane material between the inwall of end cap 10, charging is end cap 9 fixedly, discharging is end cap 10 fixedly, the end of middle rotating cylinder 8 is respectively equipped with baffle plate or the block 14 that limits seal sleeve 13 positions, feed hopper 4 is located at charging fixedly on end cap 9, discharging opening 6 is located at fixedly end cap 10 lower ends of discharging, suction opeing 5 is located at fixedly end cap 10 upper ends of discharging.
Dust arrester comprises dust cleaning case 15 and air-introduced machine 16, the air inlet of air-introduced machine 16 is connected with the air outlet of dust cleaning case 15 by induced duct 18, the air inlet of dust cleaning case 15 is connected with suction opeing 5 by exhaust column 17, the air outlet of air-introduced machine 16 is connected with a stovepipe 19, and induced duct 18 and/or exhaust column 17 are provided with volume damper 20.
Power Drive Unit comprises drive motors 21, reductor 22, gear 23 and bull gear 24, bull gear 24 is located on middle rotating cylinder 8, the power drive end of drive motors 21 is in transmission connection by reductor 22 and gear 23, and gear 23 is connected with a joggle with bull gear 24.
Bracing or strutting arrangement comprises the base 25 that is located at middle rotating cylinder 8 both sides, rotates and is provided with support roller 26 on base 25, and middle rotating cylinder 8 is provided with the wheel rim 27 that contacts and be rotatably assorted with support roller 26, and support roller 26 both sides are provided with gear wheel 28.
Also be provided with on frame 1 to the infeed belt conveyor 30 of feed hopper 4 convey materials and the outfeed belt conveyor 31 of carrying the material that passes through discharging opening 6, the discharge end of infeed belt conveyor 30 is positioned at the top of feed hopper 4, and the feed end of outfeed belt conveyor 31 is positioned at the below of discharging opening 6.
Burner 2, infeed belt conveyor 30, outfeed belt conveyor 31, air-introduced machine 16, drive motors 21, screw(-type) feeder 32 in the middle of the present invention are existing mature technology, and concrete structure repeats no more.
when the present invention uses in work, drive motors 21 rotates by reductor 22 driven gears 23, in the middle of gear 23 drives by bull gear 24, rotating cylinder 8 rotates, charging fixedly end cap 9 and discharging fixedly end cap 10 maintain static, infeed belt conveyor 30 is transported to material in cylinder through feed hopper 4, wet stock flows to discharge end on the one hand under gravity and gyroscopic action, wet stock is taken up repeatedly by lifting blade 12 on the other hand, bringing to upper end constantly raises and spreads again, make material at the uniform curtain of the interior formation of middle rotating cylinder 8, thermal current abundant and that cylinder is interior carries out heat exchange, because material is repeatedly raised and spread, contained moisture is dried gradually, thereby reach the purpose of oven dry, material is in the process of to discharging opening 6, carrying, air-introduced machine 16 with hot gas along taking out backward in rotating cylinder, under the stopping to large granular materials of filter screen 29, air-introduced machine 16 is extracted dust and moisture out by suction opeing 5, enter into dust cleaning case 15 by exhaust column 17 and locate dedusting, then with the gas of dust, by induced duct 18 and stovepipe 19, be not discharged in atmosphere, material is in the interior rolling of middle rotating cylinder 8, simultaneously the bocca 3 of burner 2 is to jet flames in cylinder, wet stock is heated, moisture is pumped, dry material is discharged to fall on outfeed belt conveyor 31 by discharging opening 6 and is transported to next process.Lifting blade 12 plays wet stock is kicked up to fall and fully obtains the effect of drying; Heat-insulation layer 7 plays the effect that in cylinder, heat runs off of avoiding; In the middle of rotary seal structure 11 plays rotating cylinder 8 two ends respectively with fixedly fixedly end cap 10 effect that relatively rotates and seal of end cap 9 and discharging of charging.Volume damper 20 plays the effect of regulating exhausting amount size in cylinder.
The present embodiment is not done any pro forma restriction to shape of the present invention, material, structure etc.; every foundation technical spirit of the present invention, to any simple modification, equivalent variations and modification that above embodiment does, all belongs to the protection domain of technical solution of the present invention.
Claims (8)
1. drying materials treatment system, comprise frame, it is characterized in that: described frame is provided with burner, bracing or strutting arrangement and Power Drive Unit, rotate and be provided with cylinder on bracing or strutting arrangement, cylinder and Power Drive Unit are in transmission connection, and the bocca of burner is extend in cylinder by an end of cylinder, and an end of cylinder is provided with feed hopper above bocca, the upper and lower of the other end of cylinder is respectively equipped with suction opeing and discharging opening, and suction opeing is connected with dust arrester.
2. a kind of drying materials treatment system according to claim 1, it is characterized in that: described cylinder by feed hopper one end to the discharging opening one downward-sloping 3-5 ° of end, inner wall of rotary drum is provided with the heat-insulation layer of being made by castable, the fixing fixing end cap of end cap and discharging of rotating cylinder, charging in the middle of cylinder comprises, charging fixedly end cap and discharging fixedly end cap be connected by rotary seal structure with middle rotating cylinder respectively, middle rotating cylinder inwall is provided with lifting blade vertically.
3. a kind of drying materials treatment system according to claim 2, it is characterized in that: in the middle of described rotary seal structure comprises, the rotating cylinder two ends plug respectively charging fixedly end cap and discharging fixedly in end cap, the outer wall of middle rotating cylinder respectively and charging fixedly end cap and discharging fixedly are provided with the seal sleeve of polyurethane material between the inwall of end cap, charging is end cap fixedly, discharging is end cap fixedly, the end of middle rotating cylinder is respectively equipped with baffle plate or the block that limits the seal sleeve position, feed hopper is located at the charging stiff end and covers, discharging opening is located at fixedly end cap lower end of discharging, suction opeing is located at the discharging stiff end and covers end.
4. according to claim 1 and 2 or 3 described a kind of drying materials treatment systems, it is characterized in that: described dust arrester comprises dust cleaning case and air-introduced machine, the air inlet of air-introduced machine is connected with the air outlet of dust cleaning case by induced duct, the air inlet of dust cleaning case is connected with suction opeing by exhaust column, the air outlet of air-introduced machine is connected with a stovepipe, and induced duct and/or exhaust column are provided with volume damper.
5. according to claim 2 or 3 described a kind of drying materials treatment systems, it is characterized in that: described Power Drive Unit comprises drive motors, reductor, gear and bull gear, bull gear is located on middle rotating cylinder, the power drive end of drive motors is connected with gear drive by reductor, and gear and bull gear are connected with a joggle.
6. a kind of drying materials treatment system according to claim 5, it is characterized in that: described bracing or strutting arrangement comprises the base that is located at middle rotating cylinder both sides, rotate and be provided with support roller on base, middle rotating cylinder is provided with the wheel rim that contacts and be rotatably assorted with support roller, and the support roller both sides are provided with gear wheel.
7. according to claim 1 and 2 or 3 described a kind of drying materials treatment systems, it is characterized in that: described cylinder is provided with filter screen at the suction opeing place, and burner is provided with as the screw(-type) feeder of burner for fuel.
8. according to claim 1 and 2 or 3 described a kind of drying materials treatment systems, it is characterized in that: also be provided with on described frame to the infeed belt conveyor of feed hopper convey materials and the outfeed belt conveyor of carrying the material that passes through discharging opening, the discharge end of infeed belt conveyor is positioned at the top of feed hopper, and the feed end of outfeed belt conveyor is positioned at the below of discharging opening.
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| CN105432782A (en) * | 2015-11-09 | 2016-03-30 | 安徽东科农机科技有限公司 | Grain dryer |
| CN106225442A (en) * | 2016-08-03 | 2016-12-14 | 杨松 | One prepares active hargil re-activation dries rotary furnace |
| CN106440707A (en) * | 2016-07-04 | 2017-02-22 | 安徽斯威达建材科技有限公司 | Foam drying machine |
| CN107152848A (en) * | 2016-03-03 | 2017-09-12 | 上海戴沃机械科技有限公司 | Dispersing device inside a kind of dryer |
| CN107160507A (en) * | 2016-08-20 | 2017-09-15 | 海宁恒森家具有限公司 | The production method of the five-prevention lumber of improvement |
| CN107225640A (en) * | 2016-08-20 | 2017-10-03 | 海宁恒森家具有限公司 | The stable handling process of improved timber size |
| CN108679961A (en) * | 2018-07-17 | 2018-10-19 | 福建铁拓机械有限公司 | A kind of improved drying roller equipment and its shorten downtime method |
| CN108738722A (en) * | 2018-06-07 | 2018-11-06 | 汤玉章 | A kind of agricultural integrated high-efficiency rice thresher |
| CN108770497A (en) * | 2018-06-07 | 2018-11-09 | 汤玉章 | One kind is agricultural to beat rice device |
| CN109405519A (en) * | 2018-09-17 | 2019-03-01 | 江苏安必信环保设备有限公司 | A kind of combined type cream mud dryer |
| CN109458811A (en) * | 2018-11-25 | 2019-03-12 | 江苏普杰环保科技有限公司 | A kind of material revolution drying system |
| CN110698781A (en) * | 2019-10-28 | 2020-01-17 | 江阴市星宇化工有限公司 | High-activity tricalcium phosphate for high-flame-retardant polystyrene resin and production device thereof |
| CN110926113A (en) * | 2019-05-24 | 2020-03-27 | 广西桂尔祥机械制造有限公司 | Rotary cylinder dryer |
| CN111322856A (en) * | 2020-04-07 | 2020-06-23 | 普定县栋泰辉建材有限公司 | Dihydrate gypsum drying device |
| CN113390245A (en) * | 2021-06-15 | 2021-09-14 | 扬州科博新材料有限公司 | Polyethylene wax powder drying chamber |
| CN113670028A (en) * | 2021-08-19 | 2021-11-19 | 钦钦 | Municipal administration is with sand heap transportation with air-drying device |
| CN114087858A (en) * | 2021-12-27 | 2022-02-25 | 吉林维达机械设备有限公司 | Rotary drying device |
| CN116294472A (en) * | 2023-02-15 | 2023-06-23 | 重庆鑫隆旭机械有限公司 | Heat pump drying device |
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| CN105432782A (en) * | 2015-11-09 | 2016-03-30 | 安徽东科农机科技有限公司 | Grain dryer |
| CN107152848A (en) * | 2016-03-03 | 2017-09-12 | 上海戴沃机械科技有限公司 | Dispersing device inside a kind of dryer |
| CN106440707A (en) * | 2016-07-04 | 2017-02-22 | 安徽斯威达建材科技有限公司 | Foam drying machine |
| CN106225442A (en) * | 2016-08-03 | 2016-12-14 | 杨松 | One prepares active hargil re-activation dries rotary furnace |
| CN106225442B (en) * | 2016-08-03 | 2018-07-20 | 杨松 | It is a kind of to prepare atlapulgite re-activation drying rotary furnace |
| CN107160507A (en) * | 2016-08-20 | 2017-09-15 | 海宁恒森家具有限公司 | The production method of the five-prevention lumber of improvement |
| CN107225640A (en) * | 2016-08-20 | 2017-10-03 | 海宁恒森家具有限公司 | The stable handling process of improved timber size |
| CN107160507B (en) * | 2016-08-20 | 2018-08-17 | 海宁恒森家具有限公司 | The production method of the five-prevention lumber of improvement |
| CN107225640B (en) * | 2016-08-20 | 2018-09-25 | 海宁恒森家具有限公司 | The treatment process that improved timber size is stablized |
| CN108738722A (en) * | 2018-06-07 | 2018-11-06 | 汤玉章 | A kind of agricultural integrated high-efficiency rice thresher |
| CN108770497A (en) * | 2018-06-07 | 2018-11-09 | 汤玉章 | One kind is agricultural to beat rice device |
| CN108679961B (en) * | 2018-07-17 | 2023-11-10 | 福建省铁拓机械股份有限公司 | Improved drying roller equipment and method for shortening downtime thereof |
| CN108679961A (en) * | 2018-07-17 | 2018-10-19 | 福建铁拓机械有限公司 | A kind of improved drying roller equipment and its shorten downtime method |
| CN109405519A (en) * | 2018-09-17 | 2019-03-01 | 江苏安必信环保设备有限公司 | A kind of combined type cream mud dryer |
| CN109458811A (en) * | 2018-11-25 | 2019-03-12 | 江苏普杰环保科技有限公司 | A kind of material revolution drying system |
| CN110926113A (en) * | 2019-05-24 | 2020-03-27 | 广西桂尔祥机械制造有限公司 | Rotary cylinder dryer |
| CN110698781A (en) * | 2019-10-28 | 2020-01-17 | 江阴市星宇化工有限公司 | High-activity tricalcium phosphate for high-flame-retardant polystyrene resin and production device thereof |
| CN111322856A (en) * | 2020-04-07 | 2020-06-23 | 普定县栋泰辉建材有限公司 | Dihydrate gypsum drying device |
| CN111322856B (en) * | 2020-04-07 | 2023-09-26 | 普定县栋泰辉建材有限公司 | Dihydrate gypsum drying device |
| CN113390245A (en) * | 2021-06-15 | 2021-09-14 | 扬州科博新材料有限公司 | Polyethylene wax powder drying chamber |
| CN113670028A (en) * | 2021-08-19 | 2021-11-19 | 钦钦 | Municipal administration is with sand heap transportation with air-drying device |
| CN114087858A (en) * | 2021-12-27 | 2022-02-25 | 吉林维达机械设备有限公司 | Rotary drying device |
| CN116294472A (en) * | 2023-02-15 | 2023-06-23 | 重庆鑫隆旭机械有限公司 | Heat pump drying device |
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| CN103398556B (en) | 2015-09-23 |
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