CN110976767A - Bronze handicraft shell baking device - Google Patents
Bronze handicraft shell baking device Download PDFInfo
- Publication number
- CN110976767A CN110976767A CN201911311582.4A CN201911311582A CN110976767A CN 110976767 A CN110976767 A CN 110976767A CN 201911311582 A CN201911311582 A CN 201911311582A CN 110976767 A CN110976767 A CN 110976767A
- Authority
- CN
- China
- Prior art keywords
- air
- gas
- bronze
- shell baking
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000906 Bronze Inorganic materials 0.000 title claims abstract description 25
- 239000010974 bronze Substances 0.000 title claims abstract description 25
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 238000005452 bending Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010285 flame spraying Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 44
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 10
- 239000002737 fuel gas Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
Abstract
The invention relates to the technical field of bronze ware manufacturing, and discloses a bronze handicraft shell baking device which comprises a flame spraying device, wherein one side of the flame spraying device is fixedly connected with an air inlet device, one side of the air inlet device is fixedly connected with a gas inlet device, the end head at one side of the gas inlet device is fixedly connected with an electric connector, an air cyclone sheet is fixedly arranged in the flame spraying device, an ignition device is fixedly arranged on the air cyclone sheet, the air cyclone sheet consists of a cyclone sheet and a cover head fixedly arranged in the middle of the cyclone sheet, the periphery of the cover head is annularly provided with a plurality of gas outlets, and anti-blocking devices are arranged in the gas outlets. This bronze handicraft shell baking and watering device through setting up the spiral shell and supporting the preforming, can prevent effectively that the air whirlwind piece of nozzle from blockking up and prevent nozzle department gas backward flow and cause danger and noise, has improved production efficiency.
Description
Technical Field
The invention relates to the technical field of bronze ware manufacturing, in particular to a bronze handicraft shell baking device.
Background
The bronze ware is already available for a long time, the bronze ware is not needed in the current life when people manufacture the bronze ware, but the bronze ware is used as an artwork greatly, and a lost wax method is a popular manufacturing method in the manufacturing of the bronze ware. The roasting of the bronze ware shell is particularly important, the bronze ware shell is heated by a gas roasting furnace in most of the prior arts, the gas roasting furnace can reach very high temperature, and the roasting efficiency is high.
The gas roasting furnace adopts combustion gas to provide heat for roasting, a burner is arranged in the furnace body to spray flame, the existing burner adopts a three-section type, the gas and the air are respectively conveyed to a flame spraying device to be combusted and sprayed, the air cyclone head adopted by the flame spraying device only has a plurality of air outlets and a beveling groove to supply air flow to pass through, and the air outlets of the air cyclone pieces are easily blocked after being adsorbed and cooled by iron oxide scale powder in the actual use, so that the service life of the burner is greatly reduced, and the blocked burner is also required to be frequently cleaned.
The gas roasting furnace adopts gas for heat supply, the burner also joins gas and air to ignite to generate heat, the existing burner often generates noise when in use, the unstable gas supply is explained, the pressure of air is greater than the pressure of gas, so that the air flows back from the gas outlet of the air cyclone piece to cause fire break, the safety and the roasting temperature are both reduced, and the normal production is not facilitated.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides a bronze handicraft shell baking device which has the advantages of being not easy to block and break fire, and solves the problems in the background technology.
The invention provides the following technical scheme: a bronze handicraft shell baking device comprises a flame projecting device, wherein one side of the flame projecting device is fixedly connected with an air inlet device, one side of the air inlet device is fixedly connected with a gas inlet device, the end head of one side of the gas inlet device is fixedly connected with an electric connector, an air cyclone sheet is fixedly installed inside the flame projecting device and consists of a cyclone sheet and a cover head fixedly installed in the middle of the cyclone sheet, the cyclone sheet is a circular sheet, a plurality of air outlets are annularly formed in the middle of the front surface of the circular sheet, electric connectors are arranged on two sides of the middle of the front surface of the circular sheet, a plurality of inclined cutting grooves are uniformly formed in the periphery of the circular sheet, an ignition device is fixedly installed on the air cyclone sheet, a positioning groove is formed in the inner wall of the cyclone sheet, a plurality of gas outlets are annularly formed in the periphery of the cover head, and an anti-blocking device is installed in the gas outlets, the bottom of the anti-blocking device is movably sleeved with a compression rod, the bottom of the compression rod is fixedly installed on a connecting rod, one end of the connecting rod is fixedly installed on the middle of the cover body, and a positioning clamping head is fixedly installed at the other end of the connecting rod.
Preferably, the anti-blocking device comprises a supporting rod, a pressing piece, a spiral rotating cylinder, a spring and sliding grooves, the arc pressing piece is fixedly mounted at the top of the supporting rod, the spiral rotating cylinder is movably sleeved at the outer side of the middle of the supporting rod, the spring is fixedly mounted at the top of the inside of the supporting rod, and the two sliding grooves are symmetrically formed in the bottom of the inside of the supporting rod.
Preferably, the top of the compression rod is sleeved on the sliding groove, and the top surface of the compression rod is propped against the spring.
Preferably, the cross-shaped end of the positioning clamping head is matched with the positioning groove.
Preferably, the groove inclination of the oblique cutting groove is forty-five degrees.
Preferably, all the materials of the anti-blocking device, the compression rod, the positioning chuck and the connecting rod are made of high-temperature resistant materials.
Preferably, the inner curvature of the pressing piece is the same as the outer curvature of the cover.
Preferably, the length of the spiral cylinder is not less than the length of the spring in a fully compressed state.
The invention has the following beneficial effects:
1. through set up spiral rotary drum cup joint on the vaulting pole in the end inside, can produce the impact force to the spiral leaf that the spiral cover leads to when the gas flows, this impact force can drive a spiral rotary drum and rotate on the vaulting pole, compares in current end, and spiral rotary surface's spiral leaf can rotate ceaselessly, has guaranteed that the iron oxide scale powder can not adsorb on the inner wall of gas export, simultaneously because the spiral rotary drum is in the rotation state always can not adsorb the iron oxide scale powder yet.
2. Through being designed with compression pole, spring and supporting the pressing sheet in the gas export of caping, when gas pressure diminishes, air pressure is great to supporting the pressing sheet and exert pressure and make its compression vaulting pole, compare in prior art, air pressure compresses when too big the gas volume that the pressing sheet made out diminishes, explain the pressure of air and gas balanced mutually when supporting the pressing sheet motionless, but relative atmospheric pressure between them does not change, still can ignite the burning, but the air can not get into in the gas way, has guaranteed the continuation of safety and heating.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a general view of the structure of the cover head of the present invention;
FIG. 3 is a cross-sectional view of the structure of the head of the present invention;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is a schematic view of the cyclone sheet structure of the present invention;
FIG. 6 is a schematic view of a conventional burner structure;
fig. 7 is a top sectional view of a conventional burner structure.
In the figure: 1. a flame projecting device; 2. an air intake device; 3. a gas inlet device; 4. connecting a power head; 5. an air cyclone sheet; 51. a cyclone sheet; 511. a wafer; 512. an air outlet; 513. an electric connection port; 514. positioning a groove; 515. obliquely cutting a groove; 52. capping; 521. a gas outlet; 53. an anti-blocking device; 531. a stay bar; 532. pressing the sheet; 533. a screw rotary cylinder; 534. a spring; 535. a chute; 54. a compression rod; 55. positioning the chuck; 56. a connecting rod; 57. a cover body; 6. an ignition device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a bronze handicraft shell baking device comprises a flame projecting device 1, one side of the flame projecting device 1 is fixedly connected with an air inlet device 2, one side of the air inlet device 2 is fixedly connected with a gas inlet device 3, one end of one side of the gas inlet device 3 is fixedly connected with an electric connector 4, the flame projecting device 1 is internally and fixedly provided with an air cyclone sheet 5, the air cyclone sheet 5 is composed of a cyclone sheet 51 and a cover head 52 fixedly arranged in the middle of the cyclone sheet 51, the middle of the front of the wafer 511 is annularly provided with a plurality of air outlets 512, two sides of the middle of the front of the wafer 511 are provided with electric connectors 513, the periphery of the wafer 511 is uniformly provided with a plurality of inclined grooves 515, the air cyclone sheet 5 is fixedly provided with an ignition device 6, the inner wall of the gas cyclone sheet 51 is provided with a positioning groove 514, the periphery of the cover head 52 is annularly provided with a plurality of outlet 521, an anti-blocking device 53 is installed in the gas outlet 521, a compression rod 54 is movably sleeved in the bottom of the anti-blocking device 53, the bottom of the compression rod 54 is fixedly installed on a connecting rod 56, one end of the connecting rod 56 is fixedly installed on the middle part of a cover body 57, and a positioning chuck 55 is fixedly installed at the other end of the connecting rod 56.
Wherein, prevent stifled device 53 including vaulting pole 531, support the preforming 532, spiral revolving cylinder 533, spring 534 and spout 535, the curved preforming 532 of supporting is fixed to the top fixed mounting of vaulting pole 531, spiral revolving cylinder 533 has been cup jointed in the middle part outside activity of vaulting pole 531, the inside top fixed mounting of vaulting pole 531 has spring 534, two spouts 535 have been seted up to the inside bottom symmetry of vaulting pole 531, prevent stifled device 53 and realize clearing up the iron scale powder through the rotation of spiral revolving cylinder 533, and utilize the impact force when the gas is given vent to anger, do not need extra power device, the spring 534 of establishing can guarantee that vaulting pole 531 can realize the lift from top to bottom, carry out the height that self-adaptive control controlled supported preforming 532 according to the difference of air and gas pressure, guarantee the stability of atmospheric pressure, the condition of the fire is cut off.
The top of the compression rod 54 is sleeved on the sliding groove 535, the top surface of the compression rod 54 abuts against the spring 534, the compression rod 54 is fixed, the sliding groove 535 is sleeved on the compression rod 54 to ensure that the support rod 531 cannot rotate, and the top surface of the compression rod 54 abuts against the bottom end of the spring 534 to achieve a compression function.
The cross end of the positioning chuck 55 is matched with the positioning slot 514, so that the positioning installation of the cover head 52 and the cyclone sheet 51 is facilitated, and the rotation of the cover head 52 is prevented.
The groove inclination of the oblique cutting groove 515 is forty-five degrees, the forty-five degree angle has the best spiral effect on the outgoing air, the mixing effect of the obliquely outgoing air and the fuel gas is the best, the fuel gas is fully combusted after being ignited, and the utilization efficiency of the fuel gas is improved.
All the materials of the anti-blocking device 53, the compression rod 54, the positioning chuck 55 and the connecting rod 56 are made of high temperature resistant materials, so that the service life at high temperature is ensured, the device is prevented from being burnt out, and the production and the safety are not facilitated.
The inner side curvature radian of the pressing sheet 532 is the same as the outer side curvature radian of the cover body 57, and the design can ensure that the pressing sheet 532 is attached to the outer surface of the cover body 57 under the action of air pressure when the air pressure is far greater than the gas pressure, so that the sealing performance of the gas outlet 521 is ensured, and the air is limited from entering the gas channel to the maximum extent.
The length of the spiral rotating cylinder 533 is not less than that of the spring 534 in a fully compressed state, so that the spiral rotating cylinder 533 can still rotate in the fuel gas outlet 521 under the condition that the pressing sheet 532 is pressed by pressure, and the situation that the whole fuel gas outlet 521 cannot be covered and cleaned with the iron oxide powder due to the fact that the support rod 531 presses and falls is avoided.
Before the flame-throwing device is used, the flame-throwing device 1, the air inlet device 2 and the fuel gas inlet device 3 are connected and installed, then an air pipeline and a fuel gas pipeline are respectively connected to the air inlet device 2 and the fuel gas inlet device 3, and the electric connector 4 is connected with a control power supply, so that the ignition device 6 is ensured to be installed on the air cyclone sheet 5 completely; when the burner works, air and gas are input into the burner, the ignition device 6 is electrified, the air coming out of the cyclone sheet 51 and the gas coming out of the cover head 52 are ignited and combusted through the ignition device 6, the spiral cylinder 533 in the cover head 52 rotates under the influence of the impact force of the flowing gas, iron oxide sheet powder is prevented from being adsorbed and adhered to the gas outlet 521, and meanwhile, the sliding groove 535 in the support rod 531 is matched with the compression rod 54 perfectly to prevent the support rod 531 from rotating; when the gas is supplied insufficiently suddenly, the pressure of the gas from the gas outlet 521 is kept consistent with the air pressure due to the spring 534 in the support rod 531 and sleeved on the compression rod 54, the pressing piece 532 will be attached to the cover 57, so that the gas pressure from the gas outlet 521 will not cause the air to enter the gas channel, and when the air pressure is too high or the gas supply is stopped, the pressing piece 532 will be pressed on the cover 57 completely to block the air and protect the gas channel.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a bronze handicraft shell baking and watering device, includes flaming device (1), one side fixedly connected with air inlet unit (2) of flaming device (1), one side fixedly connected with gas inlet unit (3) of air inlet unit (2), the end fixedly connected with connection electrical connector (4) of gas inlet unit (3) one side, inside fixed mounting of flaming device (1) has air whirlwind piece (5), air whirlwind piece (5) comprises whirlwind piece (51) and its middle part fixed mounting's capping (52), whirlwind piece (51) are a disk (511), a plurality of air outlet (512) have been seted up to the positive middle part of disk (511) annular, the both sides at the positive middle part of disk (511) are provided with electricity interface (513), even a plurality of oblique grooving (515) have been seted up all around to disk (511), an ignition device (6) is fixedly installed on the air cyclone sheet (5), and the air cyclone device is characterized in that: the cyclone separator is characterized in that a positioning groove (514) is formed in the inner wall of the cyclone sheet (51), the periphery of the cover head (52) is annularly provided with a plurality of gas outlets (521), an anti-blocking device (53) is installed in the gas outlets (521), a compression rod (54) is movably sleeved in the bottom of the anti-blocking device (53), the bottom of the compression rod (54) is fixedly installed on a connecting rod (56), one end of the connecting rod (56) is fixedly installed on the middle of the cover body (57), and a positioning clamping head (55) is fixedly installed at the other end of the connecting rod (56).
2. The bronze handicraft shell baking device of claim 1, wherein: prevent stifled device (53) including vaulting pole (531), support pressing sheet (532), spiral commentaries on classics section of thick bamboo (533), spring (534) and spout (535), the top fixed mounting of vaulting pole (531) has curved pressing sheet (532) that supports, spiral commentaries on classics section of thick bamboo (533) has been cup jointed in the middle part outside activity of vaulting pole (531), the inside top fixed mounting of vaulting pole (531) has spring (534), two spout (535) have been seted up to the inside bottom symmetry of vaulting pole (531).
3. The bronze handicraft shell baking device of claim 1, wherein: the top of the compression rod (54) is sleeved on the sliding groove (535), and the top surface of the compression rod (54) is propped against the spring (534).
4. The bronze handicraft shell baking device of claim 1, wherein: the cross end of the positioning clamping head (55) is matched with the positioning groove (514).
5. The bronze handicraft shell baking device of claim 1, wherein: the oblique cutting groove (515) has a groove slope of forty-five degrees.
6. The bronze handicraft shell baking device of claim 1, wherein: all the materials of the anti-blocking device (53), the compression rod (54), the positioning chuck (55) and the connecting rod (56) are made of high-temperature resistant materials.
7. The bronze handicraft shell baking device of claim 2, wherein: the inner side bending radian of the pressing piece (532) is the same as the outer side bending radian of the cover body (57).
8. The bronze handicraft shell baking device of claim 2, wherein: the length of the spiral rotary cylinder (533) is not less than the length of the spring (534) in a fully compressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311582.4A CN110976767B (en) | 2019-12-18 | 2019-12-18 | Bronze handicraft shell baking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311582.4A CN110976767B (en) | 2019-12-18 | 2019-12-18 | Bronze handicraft shell baking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110976767A true CN110976767A (en) | 2020-04-10 |
| CN110976767B CN110976767B (en) | 2021-12-17 |
Family
ID=70095672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911311582.4A Active CN110976767B (en) | 2019-12-18 | 2019-12-18 | Bronze handicraft shell baking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110976767B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1179023A (en) * | 1966-03-17 | 1970-01-28 | Wingaersheek Turbine Co Inc | Gas Combustion Apparatus |
| CN202747779U (en) * | 2012-08-14 | 2013-02-20 | 梁燕龙 | Rotary burning device for tunnel kiln |
| CN205842658U (en) * | 2016-05-20 | 2016-12-28 | 宁海县吉宁厨具有限公司 | A kind of fire cover structure of gas burner |
| CN106287720A (en) * | 2015-05-30 | 2017-01-04 | 浙江恒通机械有限公司 | A kind of burner for gas stove porcelain burner |
| CN206445210U (en) * | 2016-11-21 | 2017-08-29 | 大连新瑞晨环保科技有限公司 | A kind of efficient ladle baking facilities |
| CN109253630A (en) * | 2018-11-04 | 2019-01-22 | 佛山市科皓燃烧设备制造有限公司 | A kind of two-stage exchanges heat low NOx self preheating burner |
| CN209477226U (en) * | 2019-01-30 | 2019-10-11 | 枣庄市大成青铜艺术有限公司 | Device is poured in a kind of roasting of bronze handicraft shell |
| CN110449554A (en) * | 2019-08-09 | 2019-11-15 | 昆山汇多宝工业设备有限公司 | Rod type open fire burning device |
| CN209763157U (en) * | 2019-01-10 | 2019-12-10 | 唐杰 | Anti-blocking gas stove |
-
2019
- 2019-12-18 CN CN201911311582.4A patent/CN110976767B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1179023A (en) * | 1966-03-17 | 1970-01-28 | Wingaersheek Turbine Co Inc | Gas Combustion Apparatus |
| CN202747779U (en) * | 2012-08-14 | 2013-02-20 | 梁燕龙 | Rotary burning device for tunnel kiln |
| CN106287720A (en) * | 2015-05-30 | 2017-01-04 | 浙江恒通机械有限公司 | A kind of burner for gas stove porcelain burner |
| CN205842658U (en) * | 2016-05-20 | 2016-12-28 | 宁海县吉宁厨具有限公司 | A kind of fire cover structure of gas burner |
| CN206445210U (en) * | 2016-11-21 | 2017-08-29 | 大连新瑞晨环保科技有限公司 | A kind of efficient ladle baking facilities |
| CN109253630A (en) * | 2018-11-04 | 2019-01-22 | 佛山市科皓燃烧设备制造有限公司 | A kind of two-stage exchanges heat low NOx self preheating burner |
| CN209763157U (en) * | 2019-01-10 | 2019-12-10 | 唐杰 | Anti-blocking gas stove |
| CN209477226U (en) * | 2019-01-30 | 2019-10-11 | 枣庄市大成青铜艺术有限公司 | Device is poured in a kind of roasting of bronze handicraft shell |
| CN110449554A (en) * | 2019-08-09 | 2019-11-15 | 昆山汇多宝工业设备有限公司 | Rod type open fire burning device |
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| Publication number | Publication date |
|---|---|
| CN110976767B (en) | 2021-12-17 |
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Denomination of invention: A roasting and pouring device for bronze handicraft shell Effective date of registration: 20230314 Granted publication date: 20211217 Pledgee: Industrial and Commercial Bank of China Limited Guixi sub branch Pledgor: GUIXI JUNDA SPECIAL COPPER Co.,Ltd. Registration number: Y2023980034881 |
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Granted publication date: 20211217 Pledgee: Industrial and Commercial Bank of China Limited Guixi sub branch Pledgor: GUIXI JUNDA SPECIAL COPPER Co.,Ltd. Registration number: Y2023980034881 |