CN105020986A - Thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine - Google Patents

Thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine Download PDF

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Publication number
CN105020986A
CN105020986A CN201510496272.XA CN201510496272A CN105020986A CN 105020986 A CN105020986 A CN 105020986A CN 201510496272 A CN201510496272 A CN 201510496272A CN 105020986 A CN105020986 A CN 105020986A
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China
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heat
impeller
air
machine
type tail
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CN201510496272.XA
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Chinese (zh)
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CN105020986B (en
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银永忠
姚茂君
李志平
张旭
杨正华
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吉首大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses a thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine. According to the thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine, a material seal screw feeder is arranged on the upper portion of a drying tower, and a closed-air aspirator discharging machine is arranged at the bottom of the drying tower; the upper portion of the drying tower is connected with an induced draft fan, and the induced draft fan is connected with an evaporator of a thermal pump system through a cyclone dust collector, and then carries out evacuation; the evaporator of the thermal pump system is connected with a main machine through a refrigerant pipe, and the main machine is connected with a condenser through a refrigerant pipe; the air outlet end of an air blower is connected with the lower portion of the drying tower through the condenser; an impeller of the induced draft fan is provided with a structure with blades in a hollow reverse drop shape; and the shape contour line of the induced draft fan is an involute. According to the thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine, through the arrangement of sieve mesh cone covers, sieve mesh cone disks, discharging pipes, a telescopic vibration transmission shaft and cone stoppers, penetration, reverse flowing, boiling and fluidized drying are tactfully and perfectly conducted on materials; the classic boiling reverse flowing drying mode is completely surpassed, the energy saving effect is better, the drying quality is higher, and power consumption of the draught fan is lower; and the thermal pump type tail heat recycle is particularly suitable for recycling heat of tail gas at a low temperature.

Description

The recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer
Technical field
The present invention relates to a kind of dryer, the concrete blower fan that guides the heat-pump-type tail recuperation of heat of laying dust can not penetrate adverse current fluidized dryer.
Background technology
Baking temperature is generally become low temperature drying lower than the drying of 60 degrees Celsius by people, and low temperature drying is widely used in the drying of the heat sensitive materials such as crop seed, Chinese medicine, biological products.Hot air type drier due to technology maturation, adaptable, operating cost is low, reliability is strong, one of preferred unit remaining low temperature drying.Low temperature drying due to exhaust emissions temperature lower, thus more difficultly carry out tail recuperation of heat.If can realize drying the penetration adverse current fluidisation of material in hot air type low temperature drying process, and effectively reclaim tail heat, then for improving drying efficiency and realizing the meaning that energy-saving and emission-reduction all have particular importance.
Air-introduced machine is the key equipment of heated air drier; air-introduced machine is generally centrifugal blower; air-introduced machine continuous, stable, reliably working is very crucial to the hydrofuge of drying machine; the occasion used due to drying machine all contains certain dust mostly; during air-introduced machine work; air-flow by during the draught fan impeller of High Rotation Speed due to centrifugation, dust granule can depart from air-flow phase and deposit and be attached on draught fan impeller.
Because draught fan impeller rotating speed is general all higher, as long as there is micro-dust to exist in air-flow, all more dust can be accumulated after working long hours, thus change the balance of draught fan impeller rotation, if draught fan impeller does not have self purification not clear up in time to dust yet, will cumulative and progressively change draught fan impeller Static and dynamic balance, thus produce vibration.Have the dust that part hardens to be come off by vibration once run into, will balance away from the dynamic rotary of air-introduced machine immediately, then produce judder, this may cause serious personnel and device security accident.
Therefore, if can a kind of centrifugal type draught fan impeller be designed, Automatic clearance can be carried out and just do not worry causing dust accumulation, for keeping the reliable and stable work of air-introduced machine and stopping the meaning that security incident all has particular importance.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art exactly, provides a kind of simple and practical, and on energy Automatic clearance draught fan impeller, the heat-pump-type tail recuperation of heat of dust penetrates adverse current fluidized dryer.
For overcoming the deficiencies in the prior art, the present invention takes following technical scheme:
The recuperation of heat of a kind of heat-pump-type tail penetrates adverse current fluidized dryer, comprises drying tower and air-introduced machine, it is characterized in that: drying tower top is provided with material envelope feed screw, and bottom is provided with wind stopping device discharging machine; Drying tower top connects air-introduced machine, and air-introduced machine is emptying after the evaporimeter that cyclone dust collectors connect heat pump; The evaporimeter of heat pump connects main frame through refrigerant pipe, and main frame connects condenser through refrigerant pipe; The outlet side of air blast connects drying tower bottom through condenser; Described air-introduced machine comprises draught fan impeller and casing, and draught fan impeller comprises impeller backboard, impeller panel and blade, and blade arrangement becomes impeller Axial and radial, the anti-water-drop-shaped of centrosymmetric hollow; The anti-water-drop-shaped blade of hollow connects impeller panel and is welded to form impeller bodies with impeller backboard; Impeller panel is provided with air inlet, impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft; Casing is provided with air inlet and air outlet, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet, line radius strengthens gradually with involute circle, terminate outside shell air outlet, shell air outlet width equals involute circumference; Shell air inlet is provided with cover plate, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
Described drying tower top is provided with hydraulically extensible device connection for transmission axle, and power transmission shaft runs through tower body and can be driven up and down by hydraulically extensible device, and power transmission shaft is provided with vibration source transmitting vibrations; Be provided with multiple stratiform repetitive structure be made up of sieve aperture cone lid, sieve aperture cone dish in dry tower body, and have certain interval between cone dish, cone lid and be all fastened on Ta Bishang by elasticity; Cone dish is connected material blanking tube and axle sleeve respectively with cone lid, and power transmission shaft has multiple conical plug, conical plug upwards can close material blanking tube, is close to axle sleeve downwards and can opens material blanking tube.
The anti-water-drop-shaped blade of described hollow is synthesized by two panels Curved surface metal soldering group, and has symmetrical streamline profile.
Described casing is fixed on support.Casing plays sealing process, air inlet air inlet obtains kinetic energy by vane rotary, and carries out power conversion in casing, and a part of kinetic energy is converted to the static energy of gas, make output gas flow have speed dynamic head like this and also have hydrostatic head, both sums are exactly blower press.
Shell air inlet can connect airduct according to need, air inlet cover plate is detachable, be bolted to connection casing, the scroll casing shape of casing is gradually opened profile and is met the needs that Fan casing is airtight, conveying gas realizes energy efficient conversion simultaneously, makes output gas flow can reach required flow and total head.
Described shell air inlet cover plate is bolted to connection casing, and can dismantle.
During equipment work, material to be dried is by expecting that envelope feed screw enters in the cone dish on drying tower top, and now hydraulically extensible device drives power transmission shaft to make conical plug upwards compress cut out material blanking tube.Behind Vibration on Start-up source, in cone dish, material can be concentrated because of the material blanking tube of vibration to centre, and now cone lid is unaffected.
When hydraulically extensible device drives power transmission shaft downward, conical plug to be pressed in downwards on axle sleeve and to open material blanking tube, and at this moment material can drop on lower floor's cone by material blanking tube and covers.Restart vibration source, boring the material covered can because vibration be to edge dispersion motion, and enter lower floor's cone dish by cone lid with the gap of cone dish, now cone dish is unaffected.
The start and stop of the upper and lower flexible and vibration source of hydraulically extensible device, material can be made repeatedly to concentrate on sieve aperture cone lid and sieve aperture cone dish, spread, fall, make progressively moving downward of fluidization of material, realize hot air type with hot-air from bottom to top and penetrate countercurrent fluidized drying, make that drying efficiency is high, energy consumption is extremely low, dried material is exported by wind stopping device discharging machine at the bottom of tower.
Air-introduced machine completes tail recuperation of heat by introducing evaporator fin after damp and hot tail gas cyclone dust removal, through heat pump host work, by refrigerant pipe conveying refrigerant release heat in fin condenser, the air that air blast blasts on fin condenser heat exchange heat up after, enter drying tower bottom, the material progressively fallen with fluidization realizes hot air type and penetrates countercurrent fluidized drying.
When draught fan impeller of the present invention uses, because blade design becomes the anti-water-drop-shaped of hollow, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static balancing of impeller would not be affected like this, more can not accumulate dust; The technical scheme of this blade construction, the wide impeller air-introduced machine being particularly suitable for delivery air amount large adopts.
Compared with prior art, beneficial effect of the present invention is also:
By arranging sieve aperture cone lid, sieve aperture cone dish, material blanking tube, stretching vibration power transmission shaft and conical plug, ingenious, ideally achieve the penetrating of material, adverse current, boiling and fluidized drying, surmount classical boiling counter-current drying pattern completely, more energy-conservation, dry mass is higher, blower fan power consumption is lower; The recuperation of heat of heat-pump-type tail is applicable to the lower heat recovery of exhaust temperature, especially efficiently convenient.
Blade design becomes the anti-water-drop-shaped of hollow, and sharf radial center is symmetrical, and the blower fan backboard making it connect and the anti-relative torsion of panel, to extrude rigidity extremely strong, can stop to use the fan blade caused to connect the fracture of backboard root for a long time.
Blade design becomes the anti-water-drop-shaped of hollow, and sharf radial center is symmetrical, even also can obtain higher intensity with thinner board making draught fan impeller, ensures to stablize, reliably use, can save material, be convenient to make, be also conducive to light and handyization of equipment.
The anti-water-drop-shaped blade of hollow has streamline profile, and blade air steadily skimming over property is fabulous, so fan operation noise is little especially, improves working environment.
Vanes on Induced Draft Fan ingehious design is become the anti-water-drop-shaped of hollow by the present invention, and the shape of sharf radial center symmetry, achieve the real-time cleaning of dust on blade, extend the security incident also effectively stopping dust accumulation initiation service life of equipment, have a extensive future.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of the present invention
Fig. 2 is the planar structure schematic diagram of draught fan impeller.
Fig. 3 is the cross-sectional view of draught fan impeller.
Fig. 4 is the planar structure schematic diagram of air-introduced machine.
In figure, each label represents:
A, air-introduced machine; 1, drying tower; 2, power transmission shaft; 3, hydraulically extensible device; 4, material envelope feed screw; 5, vibration source; 6, material blanking tube; 7, conical plug; 8, sieve aperture cone dish; 9, axle sleeve; 10, sieve aperture cone lid; 11, wind stopping device discharging machine; 21, cyclone dust collectors; 22, evaporimeter; 23, blast pipe; 24, refrigerant pipe; 25, heat pump main frame; 26, condenser; 27, air blast; 31, anti-water-drop-shaped blade; 32, impeller cylindrical; 33, impeller air inlet; 34, axle bed; 35, rivet; 36, axis hole; 37, impeller backboard; 38, impeller panel; 41, impeller; 42, shell air inlet; 43, involute circle; 44, support; 45, casing; 46, shell air inlet cover plate; 47, shell air outlet; B, shell air outlet width.
Detailed description of the invention
Now by reference to the accompanying drawings, the present invention is illustrated further.
The recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprises drying tower 1 and air-introduced machine A, and drying tower top is provided with material envelope feed screw 4, and bottom is provided with wind stopping device discharging machine 11; Drying tower top connects air-introduced machine A, and air-introduced machine A is emptying after the evaporimeter 22 that cyclone dust collectors 21 connect heat pump; The evaporimeter 22 of heat pump connects main frame 25 through refrigerant pipe 24, and main frame 25 connects condenser 26 through refrigerant pipe 24; The outlet side of air blast 27 connects drying tower bottom through condenser 26; Described air-introduced machine A comprises draught fan impeller 41 and casing 45, and draught fan impeller 41 comprises impeller backboard 37, impeller panel 38 and blade 31, and blade 31 is arranged to impeller Axial and radial, the anti-water-drop-shaped of centrosymmetric hollow; The anti-water-drop-shaped blade 31 of hollow connects impeller panel 38 and is welded to form impeller bodies with impeller backboard 37; Impeller panel 38 is provided with air inlet 33, impeller backboard 37 by the fixing also connection shaft seat 34 of rivet 35, and axle bed 34 is connected by axis hole 36 and fan shaft; Casing 45 is provided with air inlet 42 and air outlet 47, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet 47, line radius strengthens gradually with involute circle, terminate outside shell air outlet 47, shell air outlet width B equals involute circle 43 girths; Shell air inlet 42 is provided with cover plate 46, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
Described drying tower 1 top is provided with hydraulically extensible device 3 connection for transmission axle 2, and power transmission shaft 2 runs through tower body and can be driven by hydraulically extensible device about 3, and power transmission shaft 2 is provided with vibration source 5 transmitting vibrations; Be provided with multiple stratiform repetitive structure be made up of sieve aperture cone lid 10, sieve aperture cone dish 8 in dry tower body 1, and have certain interval between cone dish 8, cone lid 10 and be all fastened on Ta Bishang by elasticity; Cone dish 8 is connected material blanking tube 6 and axle sleeve 9 respectively with cone lid 10, and power transmission shaft 2 has multiple conical plug 7, conical plug 7 upwards can close material blanking tube 6, is close to axle sleeve 9 downwards and can opens material blanking tube 6.
The anti-water-drop-shaped blade 31 of described hollow is synthesized by two panels Curved surface metal soldering group, and has symmetrical streamline profile.
Described casing 45 is fixed on support 44.Casing 45 plays sealing process, air inlet 42 air inlet is rotated by impeller 41 and obtains kinetic energy, and carries out power conversion in casing 45, and a part of kinetic energy is converted to the static energy of gas, make output gas flow have speed dynamic head like this and also have hydrostatic head, both sums are exactly blower press.
Shell air inlet 42 can connect airduct according to need, air inlet cover plate 46 is detachable, be bolted to connection casing 45, the scroll casing shape of casing 45 is gradually opened profile and is met the needs that Fan casing is airtight, conveying gas realizes energy efficient conversion simultaneously, makes output gas flow can reach required flow and total head.
Described shell air inlet cover plate 46 is bolted to connection casing 15, and can dismantle.
During equipment work, material to be dried is by expecting that envelope feed screw 4 enters in the cone dish 8 on drying tower 1 top, and now hydraulically extensible device 3 drives power transmission shaft 2 that conical plug 7 is upwards compressed and cuts out material blanking tube 6.Behind Vibration on Start-up source 5, in cone dish 8, material can be concentrated because of the material blanking tube 6 of vibration to centre, and now cone lid 10 is unaffected.
When hydraulically extensible device 3 drives power transmission shaft 2 downwards, conical plug 7 to be pressed in downwards on axle sleeve 9 and to open material blanking tube 6, and at this moment material can be dropped on lower floor's cone lid 10 by material blanking tube 6.Restart vibration source 5, the material on cone lid 10 can because vibration be to edge dispersion motion, and enter lower floor's cone dish 8 by cone lid with the gap of cone dish, now cone dish 8 is unaffected.
The start and stop of the upper and lower flexible and vibration source 5 of hydraulically extensible device 3, material can be made repeatedly to concentrate on sieve aperture cone lid 10 and sieve aperture cone dish 8, spread, fall, make progressively moving downward of fluidization of material, realize hot air type with hot-air from bottom to top and penetrate countercurrent fluidized drying, make that drying efficiency is high, energy consumption is extremely low, dried material is exported by wind stopping device discharging machine 11 at the bottom of tower.
Air-introduced machine A completes tail recuperation of heat by introducing evaporator fin 22 after damp and hot tail gas cyclone dust removal, work through heat pump main frame 25, refrigerant release heat in fin condenser 26 is carried by refrigerant pipe 24, the air that air blast 27 blasts on fin condenser 26 heat exchange heat up after, enter drying tower 1 bottom, the material progressively fallen with fluidization realizes hot air type and penetrates countercurrent fluidized drying.
When draught fan impeller of the present invention uses, because blade design becomes the anti-water-drop-shaped of hollow, and sharf radial center is symmetrical, thus during High Rotation Speed, blade surface has centrifugal self purification under centrifugal action, make dust be subject to centrifugal action and cannot adhere to, dynamic, the static balancing of impeller would not be affected like this, more can not accumulate dust; The technical scheme of this blade construction, the wide impeller air-introduced machine being particularly suitable for delivery air amount large adopts.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.

Claims (5)

1. the recuperation of heat of heat-pump-type tail penetrates an adverse current fluidized dryer, comprises drying tower and air-introduced machine, it is characterized in that: drying tower top is provided with material envelope feed screw, and bottom is provided with wind stopping device discharging machine; Drying tower top connects air-introduced machine, and air-introduced machine is emptying after the evaporimeter that cyclone dust collectors connect heat pump; The evaporimeter of heat pump connects main frame through refrigerant pipe, and main frame connects condenser through refrigerant pipe; The outlet side of air blast connects drying tower bottom through condenser; Described air-introduced machine comprises draught fan impeller and casing, and draught fan impeller comprises impeller backboard, impeller panel and blade, and blade arrangement becomes impeller Axial and radial, the anti-water-drop-shaped of centrosymmetric hollow; The anti-water-drop-shaped blade of hollow connects impeller panel and is welded to form impeller bodies with impeller backboard; Impeller panel is provided with air inlet, impeller backboard by the fixing also connection shaft seat of rivet, and axle bed is connected by axis hole and fan shaft; Casing is provided with air inlet and air outlet, cabinet form outline line is involute, the round heart of involute and blower fan axis coinciding, involute is from inside shell air outlet, line radius strengthens gradually with involute circle, terminate outside shell air outlet, shell air outlet width equals involute circumference; Shell air inlet is provided with cover plate, cover plate also has air inlet be convenient to connecting pipe, and axle center and impeller axis coinciding.
2. the recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer according to claim 1, it is characterized in that: described drying tower top is provided with hydraulically extensible device connection for transmission axle, power transmission shaft runs through tower body and can be driven up and down by hydraulically extensible device, and power transmission shaft is provided with vibration source transmitting vibrations; Be provided with multiple stratiform repetitive structure be made up of sieve aperture cone lid, sieve aperture cone dish in dry tower body, and have certain interval between cone dish, cone lid and be all fastened on Ta Bishang by elasticity; Cone dish is connected material blanking tube and axle sleeve respectively with cone lid, and power transmission shaft has multiple conical plug, conical plug upwards can close material blanking tube, is close to axle sleeve downwards and can opens material blanking tube.
3. according to claim 1 or 2, the recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer, it is characterized in that: the anti-water-drop-shaped blade of described hollow is synthesized by two panels Curved surface metal soldering group, and has symmetrical streamline profile.
4. according to claim 1 or 2, the recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer, it is characterized in that: described casing is fixed on support.
5. according to claim 1 or 2, the recuperation of heat of heat-pump-type tail penetrates adverse current fluidized dryer, it is characterized in that: described shell air inlet cover plate is bolted to connection casing, and can dismantle.
CN201510496272.XA 2015-08-14 2015-08-14 Heat-pump-type tail recuperation of heat penetrates adverse current fluidized dryer Active CN105020986B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976018A (en) * 1975-02-14 1976-08-24 William Paul Boulet Dryer system
JPS61142399A (en) * 1984-12-14 1986-06-30 Hitachi Ltd Method of preventing adhesion of dust to static blade
CN101886874A (en) * 2009-05-12 2010-11-17 甘肃锦世化工有限责任公司 Automatic constant temperature drying and automatic regulation material flow control device of light energy vertical dryer
CN201653102U (en) * 2010-05-12 2010-11-24 郑州市飞航真空干燥技术有限公司 Heat pump tower type continuous drying device
CN201810564U (en) * 2010-09-07 2011-04-27 刘忠宜 Centrifugal fan capable of axial air inlet and outlet
CN201844671U (en) * 2010-10-11 2011-05-25 盐城市科宝达科技实业有限公司 Dedicated vertical type dryer for industrial residues
CN202008279U (en) * 2010-11-05 2011-10-12 王彬 Material drying tower, material drying system and coking coal humidifying system
CN203067343U (en) * 2012-12-16 2013-07-17 登封市嵩基水泥有限公司 Dust-proof centrifugal fan vane wheel
US20140356168A1 (en) * 2013-03-15 2014-12-04 Regal Beloit America, Inc. Centrifugal fan impeller with variable shape fan blades and method of assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976018A (en) * 1975-02-14 1976-08-24 William Paul Boulet Dryer system
JPS61142399A (en) * 1984-12-14 1986-06-30 Hitachi Ltd Method of preventing adhesion of dust to static blade
CN101886874A (en) * 2009-05-12 2010-11-17 甘肃锦世化工有限责任公司 Automatic constant temperature drying and automatic regulation material flow control device of light energy vertical dryer
CN201653102U (en) * 2010-05-12 2010-11-24 郑州市飞航真空干燥技术有限公司 Heat pump tower type continuous drying device
CN201810564U (en) * 2010-09-07 2011-04-27 刘忠宜 Centrifugal fan capable of axial air inlet and outlet
CN201844671U (en) * 2010-10-11 2011-05-25 盐城市科宝达科技实业有限公司 Dedicated vertical type dryer for industrial residues
CN202008279U (en) * 2010-11-05 2011-10-12 王彬 Material drying tower, material drying system and coking coal humidifying system
CN203067343U (en) * 2012-12-16 2013-07-17 登封市嵩基水泥有限公司 Dust-proof centrifugal fan vane wheel
US20140356168A1 (en) * 2013-03-15 2014-12-04 Regal Beloit America, Inc. Centrifugal fan impeller with variable shape fan blades and method of assembly

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Effective date of registration: 20191030

Address after: 233400 building 111, No.8 pedestrian street, middle section of Yuwang Road, Huaiyuan County, Bengbu City, Anhui Province

Patentee after: Huaiyuan Hanbang Technology Consulting Co., Ltd

Address before: 416000 Hunan, Xiangxi Tujia and Miao Autonomous Prefecture, Jishou City People's road, No. 120

Patentee before: Jishou University