CN105004167B - Heat-pump-type tail heat utilization adverse current dryer - Google Patents
Heat-pump-type tail heat utilization adverse current dryer Download PDFInfo
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- CN105004167B CN105004167B CN201510496278.7A CN201510496278A CN105004167B CN 105004167 B CN105004167 B CN 105004167B CN 201510496278 A CN201510496278 A CN 201510496278A CN 105004167 B CN105004167 B CN 105004167B
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- fan
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- 230000002411 adverse Effects 0.000 title claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 13
- 238000001035 drying Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 9
- 230000035515 penetration Effects 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of heat-pump-type tail heat utilization adverse current dryer, the draught hood connection air-introduced machine of dryer, air-introduced machine empties after the evaporator of cyclone dust collectors connection heat pump；The evaporator of heat pump connects main frame through refrigerant pipe, and main frame connects condenser through refrigerant pipe；The condensed device in outlet side of air blower is connected into fan housing；The draught fan impeller has the structure that blade is hollow wedge；Air-introduced machine appearance profile line is involute.The present invention is set aerofoil fan in cone bucket, is realized the penetration adverse current low temperature drying of material and heat pump is particularly suitable for the heat recovery of low temperature exhaust gas by air-introduced machine, heat exchanger and the cone bucket for setting below sieve plate steel band closing；Blade realizes the real-time cleaning of dust on draught fan impeller and increases the impeller intensity of blower fan for the structure of hollow wedge, enhances stability and effectively prevents the security incident that dust accumulation triggers, has a extensive future.
Description
Technical field
The present invention relates to a kind of dryer, refer specifically to air-introduced machine will not laying dust heat-pump-type tail heat utilization adverse current dryer.
Background technology
Drying of the drying temperature less than 60 degrees Celsius is typically turned into low temperature drying by people, and low temperature drying is widely used in making
The drying of the heat sensitive materials such as species, Chinese medicine, biological products.Hot air type drier due to technology maturation, it is adaptable,
Operating cost is low, highly reliable, is still one of preferred unit of low temperature drying.Low temperature drying due to exhaust emissions temperature compared with
It is low, thus it is more difficult enter end of line heat utilization.If can be realized during hot air type low temperature drying to material penetrate and it is inverse
Stream drying, and tail heat is effectively reclaimed, then it is especially important for improving drying efficiency and realizing that energy-saving and emission-reduction all have
Meaning.
Air-introduced machine is the key equipment of heated air drier, and air-introduced machine is generally centrifugal blower, air-introduced machine it is continuous, steady
Calmly, reliably working is very crucial to dryer, because the occasion that dryer uses all contains certain dust, air-introduced machine work mostly
When making, air-flow during the draught fan impeller of high speed rotation by that can be departed from air-flow phase and be deposited due to centrifugation, dust granule
It is attached on draught fan impeller.
Because draught fan impeller rotating speed is general all higher, as long as with the presence of micro dust in air-flow, after working long hours all
More dust can be accumulated, so as to change the balance of draught fan impeller rotation, if draught fan impeller does not have self purification to dust
Also do not clear up in time, will static state cumulative and that draught fan impeller is altered in steps and dynamic equilibrium, so as to produce vibration.
Come off once the dust that running into has part hardened is vibrated, the dynamic rotary away from air-introduced machine will balance, then produce immediately
Judder, this may trigger serious personnel and equipment safety accident.
Therefore, if a kind of centrifugal type draught fan impeller can be designed, automatic cleaning can be carried out and just caused without worry
Dust accumulates, and all has especially important meaning for keeping the reliable and stable work of air-introduced machine and preventing security incident.
The content of the invention
The technical problem to be solved in the present invention is exactly overcome the deficiencies in the prior art, there is provided a kind of simple and practical, energy
The heat-pump-type tail heat utilization adverse current dryer of dust on automatic cleaning draught fan impeller.
For overcome the deficiencies in the prior art, the present invention takes following technical scheme：
A kind of heat-pump-type tail heat utilization adverse current dryer, including dryer and air-introduced machine, it is characterised in that；Dryer both ends
It is respectively equipped with draught hood and enters fan housing, draught hood connection air-introduced machine, air-introduced machine connects the evaporation of heat pump through cyclone dust collectors
Emptied after device；The evaporator of heat pump connects main frame through refrigerant pipe, and main frame connects condenser through refrigerant pipe；The outlet of air blower
Condensed device is held to connect into fan housing；The air-introduced machine includes draught fan impeller and casing, and draught fan impeller includes impeller backboard, impeller face
Plate and blade, blade arrangement is into impeller Axial and radial, centrosymmetric hollow wedge；Hollow wedge blade connect impeller panel and with
Impeller backboard is welded to form impeller bodies；Impeller panel is provided with air inlet, impeller backboard is fixed by rivet and connection shaft seat, axle
Seat is connected by axis hole and fan shaft；Casing is provided with air inlet and air outlet, and cabinet form contour line is involute,
The round heart of involute and blower fan axis coinciding, involute since on the inside of shell air outlet, with involute justify gradual by line radius
Increase, terminate to shell air outlet outside, shell air outlet width is equal to involute circumference；Shell air inlet is provided with cover plate,
Also air inlet is easy to connecting pipe, and axle center and impeller axis coinciding on cover plate.
There are drive roll and driven voller to drive sieve plate steel band to pass through in the dryer, the cone of closing is provided with below sieve plate steel band
Bucket, cone bucket is interior to be provided with aerofoil fan.After opening aerofoil fan, air-flow can be forced through sieve plate steel band and its material of top, real
Existing penetration counter-current drying.
The sieve plate steel band both ends are respectively equipped with feed hopper and discharge bucket, realize the charging drying of serialization.
The casing is fixed on support.Casing plays sealing process, and air inlet air inlet is rotated by impeller obtains kinetic energy,
And energy conversion is carried out in casing, a part of kinetic energy is converted to the static energy of gas, so makes output gas flow that there is speed to move
Pressure head also has hydrostatic head, and both sums are exactly blower press.
Shell air inlet can connect airduct according to need, and air intake velar plate is detachable, be bolted to connection casing, machine
The scroll casing shape of shell gradually opens profile and meets closed Fan casing, conveying gas while the needs for realizing energy efficient conversion, makes output gas
Stream can reach required flow and total head.
The shell air inlet cover plate is bolted to connection casing, and can dismantle.
When equipment works, Homogeneous charge is carried out by feed hopper, passed through with sieve plate steel band inside dryer, opens aerofoil fan
Afterwards, due to the sealing process of cone bucket, air-flow can be forced through sieve plate steel band and its material of top, and it is dry to carry out penetration adverse current
It is dry；Draught hood connects air-introduced machine air inlet, completes tail heat utilization by evaporator fin is introduced after damp and hot tail gas cyclone dust removal, passes through
Heat pump main frame works, and convey refrigerant by refrigerant pipe discharges heat in fin condenser, and the air that air blower blasts is in fin
On condenser after heat exchange heating, enter dryer by entering fan housing, complete the drying of penetration adverse current and tail heat utilization.
The draught fan impeller of the present invention is in use, because blade design is into hollow wedge, and sharf radial center is symmetrical,
Thus at a high speed rotate when, blade surface under the action of the centrifugal force have centrifugation self purification, make dust by centrifugal action and
It can not adhere to, not interfere with dynamic, the static balancing of impeller thus, will not more accumulate dust；The technology of this blade construction
Scheme, it is particularly suitable for the big wide impeller air-introduced machine of delivery air amount and uses.
Compared with prior art, beneficial effects of the present invention also reside in：
By air-introduced machine, heat exchanger and the cone bucket for setting below sieve plate steel band closing, aerofoil fan is set in cone bucket,
The penetration adverse current low temperature drying of material is realized, drying efficiency and speed is improved, also reduces energy consumption；Heat-pump-type tail heat profit
It is especially efficiently convenient with the relatively low heat recovery of suitable exhaust temperature.
Blade design is into hollow wedge, and sharf radial center is symmetrical, its blower fan backboard connected is resisted with panel
Relative torsion, extruding rigidity are extremely strong, the fracture of fan blade connection backboard root caused by can preventing long-time use.
Blade design is into hollow wedge, and sharf radial center is symmetrical, even with relatively thin board making blower fan leaf
Wheel can also obtain higher intensity, ensure stable, reliable use, can save material, be easy to make, be also beneficial to the light of equipment
Skilfulization.
The present invention by Vanes on Induced Draft Fan ingehious design into hollow wedge, realize by and the symmetrical shape of sharf radial center
The real-time cleaning of dust on blade, extend the service life of equipment and can effectively prevent the safe thing that dust accumulation triggers
Therefore have a extensive future.
Brief description of the drawings
Fig. 1 is the 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.
Each label represents in figure：
A, air-introduced machine；1st, drive roll；2nd, feed hopper；3rd, sieve plate steel band；4th, cone bucket；5th, aerofoil fan；6th, draught hood；11、
Dryer；12nd, fan housing is entered；13rd, driven voller；14th, discharge bucket；21st, cyclone dust collectors；22 evaporators；23rd, blast pipe；24th, refrigerant
Pipe；25th, heat pump main frame；26th, condenser；27th, air blower；31st, Wedge blade；32nd, impeller is cylindrical；33rd, impeller air inlet；34、
Axle bed；35th, rivet；36th, axis hole；37th, impeller backboard；38th, impeller panel；41st, impeller；42nd, shell air inlet；43rd, involute
Circle；44th, support；45th, casing；46th, shell air inlet cover plate；47th, shell air outlet；B, shell air outlet width.
Embodiment
In conjunction with accompanying drawing, the present invention is further elaborated with.
Heat-pump-type tail heat utilization adverse current dryer as shown in Figure 1, Figure 2, Figure 3 and Figure 4, including dryer 11 and air-introduced machine A,
The both ends of dryer 11 are respectively equipped with draught hood 6 and enter fan housing 12, and draught hood 6 connects air-introduced machine A, and air-introduced machine A is through cyclone dust collectors
Emptied after the evaporator 22 of 21 connection heat pumps；The evaporator 22 of heat pump connects main frame 25, main frame 25 through refrigerant pipe 24
Condenser 26 is connected through refrigerant pipe 24；The condensed device 26 in outlet side of air blower 27 is connected into fan housing 12；The air-introduced machine includes
Draught fan impeller 41 and casing 45, draught fan impeller 41 include impeller backboard 37, impeller panel 38 and blade 31, and blade 31 is arranged to leaf
Take turns Axial and radial, centrosymmetric hollow wedge；Hollow wedge blade 31 connect impeller panel 38 and with the welding group of impeller backboard 37
Into impeller bodies；Impeller panel 38 is provided with air inlet 33, impeller backboard 37 is fixed by rivet 35 and connection shaft seat 34, axle bed 34
It is connected by axis hole 36 with fan shaft；Casing 45 is provided with air inlet 42 and air outlet 47, and cabinet form contour line is
Involute, the round heart of involute and blower fan axis coinciding, involute is since the inner side of shell air outlet 47, and line radius is with gradually opening
Line circle is gradually increased, and is terminated to the outside of shell air outlet 47, and shell air outlet width B is equal to involute and justifies 43 girths；Casing enters
Air port 42 is provided with cover plate 46, also has air inlet to be easy to connecting pipe, and axle center and impeller axis coinciding on cover plate.
There are drive roll 1 and driven voller 13 to drive sieve plate steel band 3 to pass through in the dryer 11, the lower section of sieve plate steel band 3 is provided with
The cone bucket 4 of closing, cone bucket 4 is interior to be provided with aerofoil fan 5.Open aerofoil fan 5 after, air-flow can be forced through sieve plate steel band 3 and its
The material of top, realize penetration counter-current drying.
The both ends of sieve plate steel band 3 are respectively equipped with feed hopper 2 and discharge bucket 14, realize the charging drying of serialization.
The casing 45 is fixed on support 44.Casing 45 plays sealing process, and the air inlet of air inlet 42 is revolved by impeller 41
Turn to obtain kinetic energy, and energy conversion is carried out in casing 45, a part of kinetic energy is converted to the static energy of gas, so makes output gas
There is stream speed dynamic head to also have hydrostatic head, and both sums are exactly blower press.
Shell air inlet 42 can connect airduct according to need, and air intake velar plate 46 is detachable, is bolted to connection machine
Shell 45, the scroll casing shape of casing 45 gradually open profile and meet closed Fan casing, conveying gas while the needs for realizing energy efficient conversion,
Output gas flow is set to reach required flow and total head.
The shell air inlet cover plate 46 is bolted to connection casing 15, and can dismantle.
When equipment works, Homogeneous charge is carried out by feed hopper 2, passed through with sieve plate steel band 3 inside dryer 11, opens axle stream
After fan 5, due to the sealing process of cone bucket 4, air-flow can be forced through sieve plate steel band 3 and its material of top, be penetrated
Formula counter-current drying；Draught hood 6 connects air-introduced machine A air inlets, is completed evaporator fin 22 is introduced after damp and hot tail gas cyclone dust removal
Tail heat utilization, worked by heat pump main frame 25, refrigerant release heat, air blast in fin condenser 26 are conveyed by refrigerant pipe 24
The air that machine 27 blasts is exchanged heat on fin condenser 26 after heating, is entered dryer 11 by entering fan housing 12, is completed penetration
Adverse current drying and tail heat utilization.
The draught fan impeller of the present invention is in use, because blade design is into hollow wedge, and sharf radial center is symmetrical,
Thus at a high speed rotate when, blade surface under the action of the centrifugal force have centrifugation self purification, make dust by centrifugal action and
It can not adhere to, not interfere with dynamic, the static balancing of impeller thus, will not more accumulate dust；The technology of this blade construction
Scheme, it is particularly suitable for the big wide impeller air-introduced machine of delivery air amount and uses.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.It is any to be familiar with sheet
The technical staff in field, in the case where not departing from technical solution of the present invention scope, all using the technology contents of the disclosure above
Many possible changes and modifications are made to technical solution of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, it is all
It is the content without departing from technical solution of the present invention, any is simply repaiied to made for any of the above embodiments according to the technology of the present invention essence
Change, equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (4)
1. a kind of heat-pump-type tail heat utilization adverse current dryer, including dryer and air-introduced machine, it is characterised in that；Dryer both ends point
Draught hood and fan housing She You not be entered, draught hood connection air-introduced machine, air-introduced machine connects the evaporator of heat pump through cyclone dust collectors
After empty；The evaporator of heat pump connects main frame through refrigerant pipe, and main frame connects condenser through refrigerant pipe；The outlet side of air blower
Condensed device is connected into fan housing；The air-introduced machine includes draught fan impeller and casing, and draught fan impeller includes impeller backboard, impeller panel
And blade, blade arrangement is into impeller Axial and radial, centrosymmetric hollow wedge；Hollow wedge blade connection impeller panel and and leaf
Wheel backboard is welded to form impeller bodies；Impeller panel is provided with air inlet, impeller backboard is fixed by rivet and connection shaft seat, axle bed
It is connected by axis hole and fan shaft；Casing is provided with air inlet and air outlet, and cabinet form contour line is involute, gradually
Burst at the seams the round heart and blower fan axis coinciding, and since on the inside of shell air outlet, line radius gradually adds involute with involute circle
Greatly, terminate to shell air outlet outside, shell air outlet width is equal to involute circumference；Shell air inlet is provided with cover plate, lid
Also air inlet is easy to connecting pipe, and axle center and impeller axis coinciding on plate；There are drive roll and driven voller in the dryer
Drive sieve plate steel band to pass through, the cone bucket of closing is provided with below sieve plate steel band, aerofoil fan is provided with cone bucket.
2. heat-pump-type tail heat utilization adverse current dryer according to claim 1, it is characterised in that：The sieve plate steel band both ends point
She You not feed hopper and discharge bucket.
3. heat-pump-type tail heat utilization adverse current dryer according to claim 1 or claim 2, it is characterised in that：The casing is fixed on
On support.
4. heat-pump-type tail heat utilization adverse current dryer according to claim 1 or claim 2, it is characterised in that：The shell air inlet
Cover plate is bolted to connection casing, and can dismantle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496278.7A CN105004167B (en) | 2015-08-14 | 2015-08-14 | Heat-pump-type tail heat utilization adverse current dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496278.7A CN105004167B (en) | 2015-08-14 | 2015-08-14 | Heat-pump-type tail heat utilization adverse current dryer |
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| Publication Number | Publication Date |
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| CN105004167A CN105004167A (en) | 2015-10-28 |
| CN105004167B true CN105004167B (en) | 2018-03-23 |
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| CN201510496278.7A Active CN105004167B (en) | 2015-08-14 | 2015-08-14 | Heat-pump-type tail heat utilization adverse current dryer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251780A (en) * | 2021-05-28 | 2021-08-13 | 江西汇恒盛世能源科技有限责任公司 | Heat pump type tail heat utilization counter-flow dryer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR551607A (en) * | 1921-08-30 | 1923-04-10 | Anciens Etablissements Grouvel | Blade for centrifugal fan impeller |
| CN103471373A (en) * | 2013-10-09 | 2013-12-25 | 吉首大学 | Penetrating type reverse-flow drying device |
| CN204438715U (en) * | 2015-02-02 | 2015-07-01 | 吉首大学 | Heat-pump-type tail recuperation of heat microwave oxygen barrier drying machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1099826A (en) * | 1996-09-30 | 1998-04-21 | Mitsubishi Materials Corp | Garbage treatment machine |
| JP2006316683A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Electric Corp | Blower device and hand drier |
| JP2008240590A (en) * | 2007-03-27 | 2008-10-09 | Royal Electric Co Ltd | Turbo fan |
| JP5283392B2 (en) * | 2008-01-23 | 2013-09-04 | 株式会社流機エンジニアリング | Air dryer |
| CN203463305U (en) * | 2013-09-07 | 2014-03-05 | 上海光菱机械科技有限公司 | Wing type centrifugal fan |
| CN103727068A (en) * | 2013-12-19 | 2014-04-16 | 张家港市众鑫风机有限公司 | Fan with effect of prolonging service life of impeller |
| CN203670241U (en) * | 2013-12-23 | 2014-06-25 | 湘潭高新区风动机械有限公司 | Centrifugal ventilator |
| CN204511966U (en) * | 2015-02-05 | 2015-07-29 | 冯桂超 | Stem pressing glass reinforced plastics centrifugal blower fan blade wheel |
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2015
- 2015-08-14 CN CN201510496278.7A patent/CN105004167B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR551607A (en) * | 1921-08-30 | 1923-04-10 | Anciens Etablissements Grouvel | Blade for centrifugal fan impeller |
| CN103471373A (en) * | 2013-10-09 | 2013-12-25 | 吉首大学 | Penetrating type reverse-flow drying device |
| CN204438715U (en) * | 2015-02-02 | 2015-07-01 | 吉首大学 | Heat-pump-type tail recuperation of heat microwave oxygen barrier drying machine |
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| CN105004167A (en) | 2015-10-28 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xu Inventor after: Chen Weiguo Inventor after: Zhang Peng Inventor after: Yin Yongzhong Inventor after: Zhang Siyan Inventor after: Zhang Chi Inventor before: Zhang Xu Inventor before: Zhang Peng Inventor before: Yin Yongzhong Inventor before: Zhang Siyan Inventor before: Zhang Chi |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180223 Address after: 529200 rites of Tai Hai Road in Jiangmen, Taishan, Guangdong Applicant after: TAISHAN YOURONG PACKAGING PRODUCT CO.,LTD. Address before: 510640 Guangdong City, Tianhe District Province, No. five, road, public education building, unit 371-1, unit 2401 Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20180223 Address after: 510640 Guangdong City, Tianhe District Province, No. five, road, public education building, unit 371-1, unit 2401 Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 416000 Hunan, Xiangxi Tujia and Miao Autonomous Prefecture, Jishou City People's road, No. 120 Applicant before: Jishou University |
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Denomination of invention: Heat pump type tail heat utilization counter current dryer Granted publication date: 20180323 Pledgee: Guangfa Bank Co.,Ltd. Taishan Branch Pledgor: TAISHAN YOURONG PACKAGING PRODUCT CO.,LTD. Registration number: Y2024980018354 |