CN111545732B - Water-saving foundry goods atomizing cooling device - Google Patents
Water-saving foundry goods atomizing cooling device Download PDFInfo
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- CN111545732B CN111545732B CN202010491354.6A CN202010491354A CN111545732B CN 111545732 B CN111545732 B CN 111545732B CN 202010491354 A CN202010491354 A CN 202010491354A CN 111545732 B CN111545732 B CN 111545732B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
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Abstract
The invention relates to the technical field of an atomization cooling device, in particular to a water-saving type casting atomization cooling device which comprises a frame body and a pressurization host machine, wherein a conveying frame is arranged in the frame body, a support is arranged on the outer side of the frame body, a conveying roller is arranged on the surface of the support, a liquid collection enclosure assembly is arranged on a bottom plate of the frame body, a water storage tank is arranged on a top plate of the frame body, and a partition plate is arranged in the water storage tank; the beneficial effects are that: the water-saving casting atomization cooling device provided by the invention adopts an atomization cooling mode, water is pressurized to 6-8Mpa through the pressurization host, then is sent to the atomization nozzle through the high-pressure pipeline, is atomized into 5-10 mu m micro mist to be sprayed onto the aluminum product on the surface of the conveying frame, the water mist absorbs heat in the air, the heat is changed into a gas state from a liquid state, the space humidity is increased, and the purpose of reducing the air temperature is achieved, so that the cooling of the aluminum product is realized.
Description
Technical Field
The invention relates to the technical field of atomization cooling devices, in particular to a water-saving type casting atomization cooling device.
Background
In the manufacturing process of the aluminum product, the aluminum product is cooled after being formed, a water passing method is mostly adopted for cooling in the prior art, but the water cooling type cooling of the aluminum product is quicker, the part with smaller size or smaller thickness of the aluminum product can generate size change due to the sharp reduction of temperature, the product precision is influenced, the hardness of the part is higher than that of the other parts, the toughness is poorer, and the part is easy to damage after being stressed; in addition, the traditional cooling equipment is controlled by workers to load and unload the aluminum products, so that the requirement on personnel configuration is high, and the labor capacity of the workers is large; the water vapor generated by cooling is not convenient for recycling.
Disclosure of Invention
The invention aims to provide a water-saving casting atomization cooling device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a water-saving casting atomization cooling device comprises a frame body and a pressurization host machine, wherein a conveying frame is arranged inside the frame body, a support is arranged outside the frame body, a conveying roller is arranged on the surface of the support, a liquid collecting enclosure assembly is arranged on a bottom plate of the frame body, a water storage tank is arranged on a top plate of the frame body, a partition plate is arranged inside the water storage tank, an installation opening is formed in the surface of the partition plate, a water purification assembly is arranged inside the installation opening, a cover plate is arranged at the upper end of the water storage tank, a water injection pipe is inserted into the surface of the water storage tank, a water delivery pipe is inserted into the surface of the water storage tank, the other end of the water delivery pipe is inserted into the surface of the pressurization host machine, the pressurization host machine is fixed on the top plate of the frame body, a throwing pipe is inserted into the, and the surface of collecting pipe is pegged graft and is had atomizer, and the solenoid valve is all installed on the surface of throwing pipe and raceway, is provided with the mounting bracket on the roof of framework, the surface of mounting bracket is provided with the shrouding, the surface of shrouding is provided with the drainage fan, and the surface of mounting bracket is provided with the liquefaction board, is provided with the layer board between mounting bracket and the shrouding, and it has the relief valve to peg graft on the roof of mounting bracket, is provided with the pump body on the bottom plate of mounting bracket.
Preferably, the liquid collection enclosure assembly comprises two baffles, the baffles are of square plate structures and are respectively distributed at two ends of the bottom plate of the frame body, the mounting groove is formed in the top surface of each baffle, the rubber roller is mounted inside the mounting groove, the guide plates are arranged on the surfaces of the baffles and are of triangular prism structures, the guide plates are symmetrically distributed about the center of the bottom plate of the frame body, and the water collecting pipes are arranged between the two guide plates.
Preferably, the water purification subassembly includes the water purification core, and the water purification core is pegged graft in the installing port, and the bottom of water purification core is provided with the backing ring, and the backing ring is fixed on the inner wall of installing port, and the top of water purification core is provided with the clamping ring, and the clamping ring is ring shape platelike structure, and the outer anchor ring of clamping ring is being had the external screw thread, and the top inner wall of installing port is provided with the internal thread, and the internal thread is connected with the external screw thread fit, and the interior anchor ring of clamping ring is connected with the net board.
Preferably, the mounting opening is of a circular cylinder structure, the mounting opening penetrates through the partition plate, the mounting openings are arranged in a plurality of equal-size mode, and the mounting openings are arranged on the surface of the partition plate at equal intervals.
Preferably, the collecting pipe is of a hollow circular column structure, the number of the atomizing nozzles is multiple, and the plurality of the atomizing nozzles are distributed along the long edge of the collecting pipe in an arrayed manner.
Preferably, the mounting bracket is square frame structure, and the shrouding is square platelike structure, and the shrouding is provided with two to the uncovered shutoff of mounting bracket, two mounting brackets about the roof central symmetry distribution of framework.
Preferably, the liquefaction board is square plate-shaped structure, and the section of drawing water of the pump body runs through the layer board, and the drainage end of the pump body runs through the mounting bracket and pegs graft on the surface of storage water tank, and the port of the drainage end of the pump body is in the top of baffle.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:
1. the water-saving casting atomization cooling device provided by the invention adopts an atomization cooling mode, water is pressurized to 6-8Mpa through the pressurization host, then is sent to the atomization nozzle through the high-pressure pipeline, and is atomized into 5-10um micro mist to be sprayed onto the aluminum product on the surface of the conveying frame, the water mist absorbs heat in the air, the heat is changed into a gas state from a liquid state, the space humidity is increased, and the purpose of reducing the air temperature is achieved, so that the cooling of the aluminum product is realized, compared with water cooling soaking, the atomization cooling not only saves water, but also has better cooling uniformity;
2. the water-saving casting atomization cooling device provided by the invention is characterized in that the frame body is additionally provided with the mounting frame, water vapor emitted from the inner part of the frame body is sucked by the axial flow fan, the sucked water vapor is condensed into water beads after impacting the liquefaction plate and falls and collects along the sealing plate, gas is discharged from the pressure release valve, and the collected liquid is extracted to the inner part of the water storage tank through the pump body for recycling, so that the purpose of saving water is realized;
3. the water-saving casting atomization cooling device provided by the invention is characterized in that two baffles are additionally arranged on a bottom plate of a frame body to enclose and collect liquid dripped, water permeable holes are formed in the surface of a water collecting pipe, and collected liquid enters the water collecting pipe to be discharged in a centralized manner or a pump body is additionally arranged to extract the collected liquid into a water storage tank for recycling.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection structure of the water storage tank and the mounting rack of the present invention;
fig. 3 is an enlarged schematic view of a structure in fig. 2.
In the figure: the device comprises a frame body 1, a conveying frame 2, a support 3, a conveying roller 4, a baffle 5, a mounting groove 6, a rubber roller 7, a guide plate 8, a water collecting pipe 9, a water storage tank 10, a partition plate 11, a mounting opening 12, a backing ring 13, a water purification core 14, a pressing ring 15, a grid plate 16, a handle 17, a cover plate 18, a water injection pipe 19, a water delivery pipe 20, a pressurization host machine 21, a feeding pipe 22, a collecting pipe 23, an atomization nozzle 24, an electromagnetic valve 25, a mounting frame 26, a sealing plate 27, a pumping fan 28, a liquefaction plate 29, a supporting plate 30, a pressure release valve 31 and.
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 to 3, the present invention provides a technical solution: a water-saving casting atomization cooling device comprises a frame body 1 and a pressurization host machine 21, wherein a conveying frame 2 is arranged inside the frame body 1, a support 3 is arranged outside the frame body 1, and a conveying roller 4 is arranged on the surface of the support 3;
the liquid collection enclosure assembly is arranged on the bottom plate of the frame body 1 and comprises two baffle plates 5, the baffle plates 5 are of a square plate structure, the two baffle plates 5 are respectively distributed at two ends of the bottom plate of the frame body 1, the top surface of each baffle plate 5 is provided with a mounting groove 6, a rubber roll 7 is mounted inside each mounting groove 6, the surface of each baffle plate 5 is provided with a guide plate 8, each guide plate 8 is of a triangular prism structure, the two guide plates 8 are symmetrically distributed about the center of the bottom plate of the frame body 1, and a water collection pipe 9 is arranged between the two guide plates 8;
a water storage tank 10 is arranged on a top plate of the frame body 1, a partition plate 11 is arranged in the water storage tank 10, a mounting hole 12 is formed in the surface of the partition plate 11, a water purification component is arranged in the mounting hole 12 and comprises a water purification core 14, the water purification core 14 is inserted in the mounting hole 12, the mounting hole 12 is of a circular cylinder structure, the mounting hole 12 penetrates through the partition plate 11, a plurality of mounting holes 12 are arranged on the surface of the partition plate 11 at equal intervals, the mounting holes 12 are arranged at equal intervals, a backing ring 13 is arranged at the bottom of the water purification core 14 and fixed on the inner wall of the mounting hole 12, a pressure ring 15 is arranged above the water purification core 14, the pressure ring 15 is of a circular plate-shaped structure, an outer annular surface of the pressure ring 15 is provided with external threads, an inner wall of the top of the mounting hole 12 is provided with internal threads, the internal threads are matched and connected with, and the upper end of the water storage tank 10 is provided with a cover plate 18;
a water injection pipe 19 is inserted into the surface of the water storage tank 10, a water delivery pipe 20 is inserted into the surface of the water storage tank 10, the other end of the water delivery pipe 20 is inserted into the surface of a pressurizing host 21, the pressurizing host 21 is fixed on the top plate of the frame 1, a throwing pipe 22 is inserted into the surface of the pressurizing host 21, the other end of the throwing pipe 22 is inserted into a collecting pipe 23, the collecting pipe 23 is fixed on the top plate of the frame 1, atomizing nozzles 24 are inserted into the surface of the collecting pipe 23, electromagnetic valves 25 are installed on the surfaces of the throwing pipe 22 and the water delivery pipe 20, the collecting pipe 23 is of a hollow circular column structure, the number of the atomizing nozzles 24 is multiple, and the atomizing nozzles 24 are distributed along the long side of the collecting;
be provided with mounting bracket 26 on the roof of framework 1, the surface of mounting bracket 26 is provided with shrouding 27, mounting bracket 26 is square frame structure, shrouding 27 is square platelike structure, shrouding 27 is the uncovered shutoff of mounting bracket 26, mounting bracket 26 is provided with two, two mounting brackets 26 are about the roof central symmetry distribution of framework 1, shrouding 27's surface is provided with takes out a class fan 28, and mounting bracket 26's surface is provided with liquefaction board 29, be provided with layer board 30 between mounting bracket 26 and the shrouding 27, it has relief valve 31 to peg graft on mounting bracket 26's the roof, be provided with the pump body 32 on mounting bracket 26's the bottom plate, liquefaction board 29 is square platelike structure, the section of drawing water of the pump body 32 runs through layer board 30, peg graft on the surface of storage water tank 10 behind the drainage end of the mounting.
The working principle is as follows: in practical use, referring to fig. 1, the two sides of the frame 1 are provided with the supports 3, wherein the support 3 on the right side is used for conveying an aluminum product to the conveying frame 2, the support 3 on the left side is used for conveying the aluminum product discharged from the conveying frame 2, when the aluminum product is conveyed on the surface of the conveying frame 2, liquid in the water storage tank 10 enters the pressurizing main machine 21 to be pressurized, then is injected into the collecting pipe 23 through the feeding pipe 22, is atomized by the atomizing nozzle 24 and then is sprayed on the surface of the aluminum product, compared with cold water soaking, the spraying is not only water-saving, but also the aluminum product is uniformly heated, and the situation that the part with smaller size or smaller thickness generates size change due to rapid temperature reduction is avoided; wherein, the liquid in the water storage tank 10 is injected into the water storage tank 10 through the water injection pipe 19 and then is discharged for use after being filtered through the water purification core 14, after the cover plate 18 is detached from the upper part of the water storage tank 10, the handle 17 is held by hand and the screw ring 15 is screwed upwards and detached from the mounting port 12, and then the water purification core 14 can be extracted from the inside of the mounting port 12 for replacement; inside steam that produces when the aluminum products cools off is sucked to mounting bracket 26 by draft fan 28, steam striking mounting bracket 26 back liquefaction is the drop of water, the drop of water falls to layer board 30 along shrouding 27 on, the air current passes through relief valve 31 and discharges from mounting bracket 26, the liquid that gathers pours into storage water tank 10 internal recycle into after being sucked by the pump body 32, and from the liquid that the conveying frame 2 leaks down collect between two baffles 5, the liquid that gathers flows along guide plate 8 and gets into the inside concentrated transport of collector pipe 9 through the hole of permeating water on collector pipe 9 surface.
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 (1)
1. The utility model provides a water-saving foundry goods atomizing cooling device, includes framework (1) and pressurization host computer (21), its characterized in that: the device is characterized in that a conveying frame (2) is arranged in the frame body (1), a support (3) is arranged on the outer side of the frame body (1), conveying rollers (4) are arranged on the surface of the support (3), a liquid collecting enclosure assembly is arranged on a bottom plate of the frame body (1), a water storage tank (10) is arranged on a top plate of the frame body (1), a partition plate (11) is arranged in the water storage tank (10), a mounting opening (12) is formed in the surface of the partition plate (11), a water purifying assembly is arranged in the mounting opening (12), a cover plate (18) is arranged at the upper end of the water storage tank (10), a water injection pipe (19) is inserted into the upper end surface of the water storage tank (10), a water conveying pipe (20) is inserted into the right lower end of the water storage tank (10), the other end of the water conveying pipe (20) is inserted into the surface of, a throwing pipe (22) is inserted into the surface of the pressurization main machine (21), the other end of the throwing pipe (22) is inserted into a collecting pipe (23), the collecting pipe (23) is fixed on the top plate of the frame body (1), an atomizing nozzle (24) is inserted on the surface of the collecting pipe (23), electromagnetic valves (25) are respectively arranged on the surfaces of the throwing pipe (22) and the water delivery pipe (20), a mounting rack (26) is arranged on the top plate of the frame body (1), a sealing plate (27) is arranged on the surface of the mounting rack (26), a suction fan (28) is arranged on the surface of the sealing plate (27), a liquefaction plate (29) is arranged on the surface of the mounting rack (26), a supporting plate (30) is arranged between the mounting rack (26) and the sealing plate (27), a pressure release valve (31) is inserted into a top plate of the mounting rack (26), and a pump body (32) is arranged on a bottom plate of the mounting rack (26);
the liquid collection enclosure assembly comprises baffle plates (5), the baffle plates (5) are of square plate structures, the number of the baffle plates (5) is two, the two baffle plates (5) are respectively distributed at two ends of a bottom plate of the frame body (1), a mounting groove (6) is formed in the top surface of each baffle plate (5), a rubber roller (7) is mounted inside each mounting groove (6), guide plates (8) are arranged on the surfaces of the baffle plates (5), the guide plates (8) are of triangular prism structures, the two guide plates (8) are symmetrically distributed about the center of the bottom plate of the frame body (1), and a water collecting pipe (9) is arranged between the two guide plates (8);
the water purification assembly comprises a water purification core (14), the water purification core (14) is inserted into the mounting opening (12), a backing ring (13) is arranged at the bottom of the water purification core (14), the backing ring (13) is fixed on the inner wall of the mounting opening (12), a pressure ring (15) is arranged above the water purification core (14), the pressure ring (15) is of a circular plate-shaped structure, an outer annular surface of the pressure ring (15) is provided with an external thread, an inner thread is arranged on the inner wall of the top of the mounting opening (12), the internal thread is matched and connected with the external thread, an inner annular surface of the pressure ring (15) is connected with a grid plate (16), and a handle (17) is arranged on the surface of;
the mounting openings (12) are of a circular cylinder structure, the mounting openings (12) penetrate through the partition plate (11), a plurality of mounting openings (12) are arranged on the surface of the partition plate (11) at equal intervals and in equal size;
the collecting pipe (23) is of a hollow circular column structure, a plurality of atomizing spray heads (24) are arranged, and the plurality of atomizing spray heads (24) are distributed along the long edge of the collecting pipe (23);
the mounting rack (26) is of a square frame structure, the sealing plates (27) are of a square plate structure, the openings of the mounting rack (26) are sealed by the sealing plates (27), the number of the mounting racks (26) is two, and the two mounting racks (26) are distributed in a central symmetry mode relative to a top plate of the frame (1);
the liquefaction plate (29) is of a square plate-shaped structure, the water pumping section of the pump body (32) penetrates through the supporting plate (30), the water discharging end of the pump body (32) penetrates through the mounting frame (26) and then is inserted into the surface of the water storage tank (10), and the port of the water discharging end of the pump body (32) is positioned above the partition plate (11);
liquid in the water storage tank (10) is injected into the water storage tank (10) through a water injection pipe (19) and then permeates through the water purification core (14) to realize filtration and then is discharged for use, after the cover plate (18) is detached from the upper part of the water storage tank (10), the handle (17) is held by a hand to upwards screw the compression ring (15) and detach the compression ring from the mounting opening (12), and then the water purification core (14) can be drawn out from the inside of the mounting opening (12) for replacement; inside steam that produces when the aluminum products cools off is pumped to mounting bracket (26) by pumping fan (28), steam strikes mounting bracket (26) back liquefaction and is the drop of water, the drop of water falls to layer board (30) along shrouding (27), the air current passes through relief valve (31) and discharges from mounting bracket (26), the liquid that gathers pours into storage water tank (10) internal recycle into after being pumped by the pump body (32) and uses, and gather between two baffle (5) from the liquid that conveys frame (2) hourglass down, the liquid that gathers flows along guide plate (8) and gets into collector pipe (9) through the hole of permeating water on collector pipe (9) surface and inside concentrated the transport.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491354.6A CN111545732B (en) | 2020-06-02 | 2020-06-02 | Water-saving foundry goods atomizing cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491354.6A CN111545732B (en) | 2020-06-02 | 2020-06-02 | Water-saving foundry goods atomizing cooling device |
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| Publication Number | Publication Date |
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| CN111545732A CN111545732A (en) | 2020-08-18 |
| CN111545732B true CN111545732B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010491354.6A Active CN111545732B (en) | 2020-06-02 | 2020-06-02 | Water-saving foundry goods atomizing cooling device |
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| US3976120A (en) * | 1972-08-25 | 1976-08-24 | Demag Aktiengesellschaft | Casting arrangement for forming plate-shaped metal parts |
| US6224693B1 (en) * | 1999-12-10 | 2001-05-01 | Tenedora Nemak, S.A. De C.V. | Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging |
| CN202356595U (en) * | 2011-12-08 | 2012-08-01 | 广东金亿合金制品有限公司 | Zinc alloy spray condensation covering device |
| CN103007700A (en) * | 2012-12-19 | 2013-04-03 | 张勤福 | Negative pressure type steam-water separator |
| CN203108250U (en) * | 2012-12-19 | 2013-08-07 | 张勤福 | Negative-pressure moisture separator |
| CN206474512U (en) * | 2017-02-13 | 2017-09-08 | 江苏谷盛能源有限公司 | A kind of circulated sprinkling cooler bin |
| CN206567524U (en) * | 2017-02-27 | 2017-10-20 | 重庆市品一铝业有限公司 | Circular aluminium ingot cooling device |
| CN108844272A (en) * | 2018-06-29 | 2018-11-20 | 利辛县眼病防治所 | A kind of cooling equipment of aluminum products atomization |
| CN108917252A (en) * | 2018-06-29 | 2018-11-30 | 利辛县眼病防治所 | A kind of auto-cool system for aluminum products production line |
| CN208195627U (en) * | 2018-04-16 | 2018-12-07 | 福安市中联铝业有限公司 | A kind of cooling equipment of motor casing casting |
| DE102017005616A1 (en) * | 2017-06-14 | 2018-12-20 | Erol Kisikli | Method of hardening steel |
| CN110757337A (en) * | 2019-10-25 | 2020-02-07 | 白建 | Cooling device is used in aluminum alloy production with hydrologic cycle function |
-
2020
- 2020-06-02 CN CN202010491354.6A patent/CN111545732B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976120A (en) * | 1972-08-25 | 1976-08-24 | Demag Aktiengesellschaft | Casting arrangement for forming plate-shaped metal parts |
| US6224693B1 (en) * | 1999-12-10 | 2001-05-01 | Tenedora Nemak, S.A. De C.V. | Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging |
| CN202356595U (en) * | 2011-12-08 | 2012-08-01 | 广东金亿合金制品有限公司 | Zinc alloy spray condensation covering device |
| CN103007700A (en) * | 2012-12-19 | 2013-04-03 | 张勤福 | Negative pressure type steam-water separator |
| CN203108250U (en) * | 2012-12-19 | 2013-08-07 | 张勤福 | Negative-pressure moisture separator |
| CN206474512U (en) * | 2017-02-13 | 2017-09-08 | 江苏谷盛能源有限公司 | A kind of circulated sprinkling cooler bin |
| CN206567524U (en) * | 2017-02-27 | 2017-10-20 | 重庆市品一铝业有限公司 | Circular aluminium ingot cooling device |
| DE102017005616A1 (en) * | 2017-06-14 | 2018-12-20 | Erol Kisikli | Method of hardening steel |
| CN208195627U (en) * | 2018-04-16 | 2018-12-07 | 福安市中联铝业有限公司 | A kind of cooling equipment of motor casing casting |
| CN108844272A (en) * | 2018-06-29 | 2018-11-20 | 利辛县眼病防治所 | A kind of cooling equipment of aluminum products atomization |
| CN108917252A (en) * | 2018-06-29 | 2018-11-30 | 利辛县眼病防治所 | A kind of auto-cool system for aluminum products production line |
| CN110757337A (en) * | 2019-10-25 | 2020-02-07 | 白建 | Cooling device is used in aluminum alloy production with hydrologic cycle function |
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| CN111545732A (en) | 2020-08-18 |
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Effective date of registration: 20210528 Address after: 314511 East, floor 1, No. 143, lianhuabang, Wufeng village, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province Applicant after: Jiaxing Deji Machinery Design Co.,Ltd. Address before: Zhejiang University of water resources and hydropower, No. 583, Xuelin street, East District, Xiasha Higher Education Park, Jianggan District, Hangzhou City, Zhejiang Province, 310018 Applicant before: Ling Haifeng |
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Effective date of registration: 20230105 Address after: 516000 Chayuan Village, Qiuchang Jiangjun Road, Huiyang District, Huizhou City, Guangdong Province Patentee after: KATE INDUSTRIAL TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 314511 East, floor 1, No. 143, lianhuabang, Wufeng village, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: Jiaxing Deji Machinery Design Co.,Ltd. |