CN105597598A - Stirring device for investment casting of wax liquid - Google Patents
Stirring device for investment casting of wax liquid Download PDFInfo
- Publication number
- CN105597598A CN105597598A CN201610154886.4A CN201610154886A CN105597598A CN 105597598 A CN105597598 A CN 105597598A CN 201610154886 A CN201610154886 A CN 201610154886A CN 105597598 A CN105597598 A CN 105597598A
- Authority
- CN
- China
- Prior art keywords
- agitating device
- stirring rod
- wax liquid
- filter screen
- screen pack
- 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
- 238000003756 stirring Methods 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 238000005495 investment casting Methods 0.000 title abstract description 4
- 238000005266 casting Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
- B01F27/054—Deformable stirrers, e.g. deformed by a centrifugal force applied during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/074—Stirrers characterised by their mounting on the shaft having two or more mixing elements being concentrically mounted on the same shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/26—Mixing ingredients for casting metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention belongs to the technical field of investment casting equipment and particularly relates to a stirring device for investment casting of wax liquid. The stirring device comprises a stirring device main body, and further comprises a stirring column arranged in the stirring device main body, wherein a filter screen unit capable of being folded through elastic pull force, and a stirring rod unit are arranged on the stirring column in sequence from top to bottom. The stirring device provided by the invention can be used for filtering the wax liquid to remove impurities before stirring, and has the advantages of simple and effective structure, good impurity removing effect, uniformity and completeness in stirring and convenience for washing an inner wall of the device.
Description
Technical field
The invention belongs to investment casting device technical field, relate in particular to a kind of agitating device for model casting wax liquid.
Background technology
In full form casting process, the wax liquid quality of making wax-pattern has important contacting with the quality of casting end product quality, and wax liquid needs to stir operation adding before incident wax machine, and the every state that ensures wax liquid is applicable to entering to be penetrated wax machine and penetrate waxed mould operation. It is the mode that manually completes stirring in mixing drum that traditional wax liquid stirs what adopt, and such mode has increased workman's labour intensity and the time greatly, causes production efficiency low and affect the Forming Quality of wax-pattern.
Patent publication No. is CN205020008U, the Chinese utility model patent that open day is 2016.02.10 discloses a kind of wax alloy melt stirring device, comprise mixing drum, and be arranged at the frame of mixing drum upper end, also comprise the charging aperture that is arranged at mixing drum upper end, also comprise the discharging opening that is arranged at mixing drum side, described mixing drum is cylindrical shape, hollow-core construction, made by resistance to compression material, described mixing drum upper end is provided with sealing plate, mixing drum inside is provided with driving shaft, described driving shaft keeps vertical with sealing plate, described drive shaft surface is provided with several stirring vanes, described driving shaft side is also provided with metal adsorption bar, described metal adsorption bar quantity is at least two, metal adsorption bar is secured by bolts on mixing drum inwall, described driving shaft lower end is also provided with screen cloth, described screen cloth is secured by bolts in mixing drum inside, screen cloth and sealing plate keeping parallelism, described frame is bolted and mixing drum upper end, described frame inside is provided with gear-box, described frame upper end is also provided with motor.
But this utility model exists complex structure, and mixing effect is poor, in cylinder, cleaning difficulty is large, the problem of wax liquid difficult quality control.
Summary of the invention
The object of this invention is to provide a kind of agitating device for model casting wax liquid, it can carry out filtering and impurity removing to wax liquid before stirring, and the present invention has simple in structure effective, and good impurity removing effect stirs thoroughly, device inner wall washing advantage easily.
The scheme that the present invention addresses the above problem employing is: a kind of agitating device for model casting wax liquid, comprise agitating device main body, also comprise the teeter column being arranged in described agitating device main body, on described teeter column, be provided with successively from top to down screen pack unit and the stirring rod unit that can draw in by elastic pulling force. Wax liquid described in this setting enters described agitating device through described screen pack unit, described agitating device has advantages of that stirring easily and thoroughly, described screen pack unit and stirring rod unit have can draw feature in, makes the cleaning of described agitating device inwall convenient effectively.
Further preferred technical scheme is: described teeter column passes and is fixed in the lower end plate of described agitating device main body, drives rotation by motor.
Further preferred technical scheme is: described screen pack unit comprises the screen pack fixed underpan being fixedly connected with described teeter column, be arranged on the filter screen stand on described screen pack fixed underpan, be arranged on the extension spring between described teeter column and described filter screen stand and be arranged on described screen pack fixed underpan the filter screen stand bulb clamping part for the fixing described filter screen stand launching, between described two adjacent filter screen stands, be provided with screen pack.
Further preferred technical scheme is: on described teeter column, be positioned at top, described screen pack unit and offer the sliding tray sliding for described extension spring, the position of described sliding tray is corresponding with quantity and described filter screen stand.
Further preferred technical scheme is: described filter screen stand bulb clamping part comprises and is arranged on the first buckle slot on described screen pack fixed underpan and is arranged on the first bulb on described filter screen stand lower surface. This is arranged so that described filter screen stand can be opened and stable support, ensures open mode in rotary course.
Further preferred technical scheme is: described filter screen stand is provided with slip round end portion away from one end of screen pack unit center, and the round end portion of sliding described in when described filter screen stand horizontal development withstands on the inwall of described agitating device main body. The stability that is arranged so that described teeter column of filter screen stand described in this setting is further enhanced.
Further preferred technical scheme is: described stirring rod unit comprises the stirring rod fixed underpan being fixedly connected with described teeter column, be arranged on the stirring rod on described stirring rod fixed underpan, in described stirring rod, be provided with torsion spring for being connected and rotating with described stirring rod fixed underpan, described stirring rod fixed underpan is provided with the stirring rod bulb clamping part for the fixing described stirring rod of launching.
Further preferred technical scheme is: described stirring rod bulb clamping part comprises and is arranged on the second buckle slot on described stirring rod fixed underpan and is arranged on the second bulb on described stirring rod lower surface.
Further preferred technical scheme is: the quantity of described stirring rod unit is 3-5 group.
Further preferred technical scheme is: described agitating device main body comprises the upper end cover of opening when cleaning described agitating device main body inner wall, described agitating device main body is provided with rinse water import, rinse water outlet and discharging opening, and the position that is positioned at top, described screen pack unit on described upper end cover is provided with charging aperture.
The present invention can carry out filtering and impurity removing to wax liquid before stirring, and the present invention has simple in structure effective, and good impurity removing effect stirs thoroughly, device inner wall washing advantage easily.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of screen pack unit in the present invention.
Fig. 3 is the top view of screen pack unit after opening in the present invention.
Fig. 4 is the structural representation of stirring rod unit in the present invention.
Detailed description of the invention
The following stated is only preferred embodiment of the present invention, not scope of the present invention is limited.
Embodiment: as accompanying drawing 1, accompanying drawing 2, shown in accompanying drawing 3 and accompanying drawing 4, a kind of agitating device for model casting wax liquid, comprise agitating device main body 1, also comprise the teeter column 2 being arranged in described agitating device main body 1, on described teeter column 2, be provided with successively from top to down screen pack unit 3 and the stirring rod unit 4 that can draw in by elastic pulling force, described wax liquid enters described agitating device through described screen pack unit 3, described agitating device has advantages of that stirring easily and thoroughly, described screen pack unit 3 and stirring rod unit 4 have can draw feature in, make the cleaning of described agitating device inwall convenient effectively.
Described teeter column 2 passes and is fixed in the lower end plate of described agitating device main body 1, drives rotation by motor 5. Described screen pack unit 3 comprises the screen pack fixed underpan 301 being fixedly connected with described teeter column 2, be arranged on the filter screen stand 302 on described screen pack fixed underpan 301, be arranged on the extension spring 303 between described teeter column 2 and described filter screen stand 302 and be arranged on described screen pack fixed underpan 301 the filter screen stand bulb clamping part 304 for the fixing described filter screen stand 302 launching, between described two adjacent filter screen stands 302, be provided with screen pack 305. On described teeter column 2, be positioned at 3 tops, described screen pack unit and offer the sliding tray 306 sliding for described extension spring 303, the position of described sliding tray 306 is corresponding with quantity and described filter screen stand 302. Described filter screen stand bulb clamping part 304 comprises and is arranged on the first buckle slot 30401 on described screen pack fixed underpan 301 and is arranged on the first bulb 30402 on described filter screen stand 302 lower surfaces, ensure that described filter screen stand 302 can be opened and stable support, in rotary course, ensure described in open mode that filter screen stand 302 is provided with slip round end portion 30201 away from the one end at 3 centers, screen pack unit, the round end portion 30201 of sliding described in when described filter screen stand 302 horizontal development withstands on the inwall of described agitating device main body 1.
Described stirring rod unit 4 comprises the stirring rod fixed underpan 401 being fixedly connected with described teeter column 2, be arranged on the stirring rod 402 on described stirring rod fixed underpan 401, in described stirring rod 402, be provided with torsion spring 403 for being connected and rotating with described stirring rod fixed underpan 401, described stirring rod fixed underpan 401 is provided with the stirring rod bulb clamping part 404 for the fixing described stirring rod 402 of launching. Described stirring rod bulb clamping part 404 comprises and is arranged on the second buckle slot 40401 on described stirring rod fixed underpan 401 and is arranged on the second bulb 40402 on described stirring rod 402 lower surfaces. The quantity of described stirring rod unit 4 is 3-5 group.
Described agitating device main body 1 comprises the upper end cover 101 of opening when cleaning described agitating device main body 1 inwall, described agitating device main body 1 is provided with rinse water import 102, rinse water outlet 103 and discharging opening 104, and the position that is positioned at 3 tops, described screen pack unit on described upper end cover 101 is provided with charging aperture 105.
All be horizontal opening state in screen pack unit 3 described in described agitating device use procedure and stirring rod unit 4, in rotary course, also can keep stable. In the time that described agitating device need to clean inside, described screen pack unit 3 and stirring rod unit 4 can manually close up, and the inner wall washing of described agitating device is become easily and effectively.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken possessing at described technical field those of ordinary skill, can also under the prerequisite that does not depart from aim of the present invention, make various amendments. These are all not creative amendments, as long as be all subject to the protection of Patent Law within the scope of claim of the present invention.
Claims (10)
1. the agitating device for model casting wax liquid, comprise agitating device main body (1), it is characterized in that: also comprise the teeter column (2) being arranged in described agitating device main body (1), on described teeter column (2), be provided with successively from top to down screen pack unit (3) and stirring rod unit (4) that can draw in by elastic pulling force.
2. a kind of agitating device for model casting wax liquid according to claim 1, is characterized in that: described teeter column (2) passes and is fixed in the lower end plate of described agitating device main body (1), drives rotation by motor (5).
3. a kind of agitating device for model casting wax liquid according to claim 1, it is characterized in that: described screen pack unit (3) comprises the screen pack fixed underpan (301) being fixedly connected with described teeter column (2), be arranged on the filter screen stand (302) on described screen pack fixed underpan (301), be arranged on the extension spring (303) between described teeter column (2) and described filter screen stand (302) and be arranged on the upper filter screen stand bulb clamping part (304) for the fixing described filter screen stand (302) launching of described screen pack fixed underpan (301), between described adjacent two filter screen stands (302), be provided with screen pack (305).
4. a kind of agitating device for model casting wax liquid according to claim 3, it is characterized in that: on described teeter column (2), be positioned at top, described screen pack unit (3) and offer the sliding tray (306) sliding for described extension spring (303), the position of described sliding tray (306) is corresponding with quantity and described filter screen stand (302).
5. a kind of agitating device for model casting wax liquid according to claim 3, is characterized in that: described filter screen stand bulb clamping part (304) comprises the first buckle slot (30401) being arranged on described screen pack fixed underpan (301) and is arranged on the first bulb (30402) on described filter screen stand (302) lower surface.
6. a kind of agitating device for model casting wax liquid according to claim 3, it is characterized in that: described filter screen stand (302) is provided with slip round end portion (30201) away from the one end at center, screen pack unit (3), the round end portion (30201) of sliding described in when described filter screen stand (302) horizontal development withstands on the inwall of described agitating device main body (1).
7. a kind of agitating device for model casting wax liquid according to claim 1, it is characterized in that: described stirring rod unit (4) comprises the stirring rod fixed underpan (401) being fixedly connected with described teeter column (2), be arranged on the stirring rod (402) on described stirring rod fixed underpan (401), in described stirring rod (402), be provided with torsion spring (403) for being connected and rotating with described stirring rod fixed underpan (401), described stirring rod fixed underpan (401) is provided with the stirring rod bulb clamping part (404) for the fixing described stirring rod (402) of launching.
8. a kind of agitating device for model casting wax liquid according to claim 7, is characterized in that: described stirring rod bulb clamping part (404) comprises the second buckle slot (40401) being arranged on described stirring rod fixed underpan (401) and is arranged on the second bulb (40402) on described stirring rod (402) lower surface.
9. a kind of agitating device for model casting wax liquid according to claim 1, is characterized in that: the quantity of described stirring rod unit (4) is 3-5 group.
10. a kind of agitating device for model casting wax liquid according to claim 1, it is characterized in that: described agitating device main body (1) comprises the upper end cover (101) of opening when cleaning described agitating device main body (1) inwall, described agitating device main body (1) is provided with rinse water import (102), rinse water outlet (103) and discharging opening (104), and the position that is positioned at top, described screen pack unit (3) on described upper end cover (101) is provided with charging aperture (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154886.4A CN105597598B (en) | 2016-03-18 | 2016-03-18 | A kind of agitating device for model casting wax liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154886.4A CN105597598B (en) | 2016-03-18 | 2016-03-18 | A kind of agitating device for model casting wax liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105597598A true CN105597598A (en) | 2016-05-25 |
| CN105597598B CN105597598B (en) | 2017-11-24 |
Family
ID=55978268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610154886.4A Active CN105597598B (en) | 2016-03-18 | 2016-03-18 | A kind of agitating device for model casting wax liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105597598B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731999A (en) * | 2016-12-27 | 2017-05-31 | 重庆欣泰发食品有限公司 | Emulsified food agitating device |
| CN107212056A (en) * | 2017-06-23 | 2017-09-29 | 张莉笛 | A kind of food processing equipment |
| CN111469547A (en) * | 2020-04-07 | 2020-07-31 | 吴学彪 | Bottom scraping and stirring system of ink box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520474A (en) * | 1939-06-26 | 1940-04-24 | William Langsdorf | Improvements in rotatable mixing elements for mixing machines |
| CN2815483Y (en) * | 2005-08-17 | 2006-09-13 | 虞培清 | Blade automatic expanding type mixer |
| CN201445932U (en) * | 2009-05-26 | 2010-05-05 | 常州碳酸钙有限公司 | Integrating device of stirring screen |
| CN201684551U (en) * | 2010-03-23 | 2010-12-29 | 桐乡中欣化纤有限公司 | Special-purpose stirring device for oil drum |
| CN102671566A (en) * | 2012-05-30 | 2012-09-19 | 苏州市金翔钛设备有限公司 | Leaching tank stirring device having defoaming function |
| CN202666458U (en) * | 2012-05-30 | 2013-01-16 | 苏州市金翔钛设备有限公司 | Leaching tank stirring device with defoaming function |
| CN204193835U (en) * | 2014-11-04 | 2015-03-11 | 贵州欧瑞信环保科技有限责任公司 | A kind of telescopic agitating device |
| CN204447418U (en) * | 2015-02-04 | 2015-07-08 | 中国矿业大学 | Flotation froth breaking agitator |
| CN204699638U (en) * | 2015-06-19 | 2015-10-14 | 济宁学院 | Stirrer for beaker |
| CN205020008U (en) * | 2015-09-30 | 2016-02-10 | 嘉善县汾湖铸钢厂 | Wax liquid agitating unit |
| CN205392271U (en) * | 2016-03-18 | 2016-07-27 | 湖州南丰机械制造有限公司 | A agitating unit for investment casting wax liquid |
-
2016
- 2016-03-18 CN CN201610154886.4A patent/CN105597598B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520474A (en) * | 1939-06-26 | 1940-04-24 | William Langsdorf | Improvements in rotatable mixing elements for mixing machines |
| CN2815483Y (en) * | 2005-08-17 | 2006-09-13 | 虞培清 | Blade automatic expanding type mixer |
| CN201445932U (en) * | 2009-05-26 | 2010-05-05 | 常州碳酸钙有限公司 | Integrating device of stirring screen |
| CN201684551U (en) * | 2010-03-23 | 2010-12-29 | 桐乡中欣化纤有限公司 | Special-purpose stirring device for oil drum |
| CN102671566A (en) * | 2012-05-30 | 2012-09-19 | 苏州市金翔钛设备有限公司 | Leaching tank stirring device having defoaming function |
| CN202666458U (en) * | 2012-05-30 | 2013-01-16 | 苏州市金翔钛设备有限公司 | Leaching tank stirring device with defoaming function |
| CN204193835U (en) * | 2014-11-04 | 2015-03-11 | 贵州欧瑞信环保科技有限责任公司 | A kind of telescopic agitating device |
| CN204447418U (en) * | 2015-02-04 | 2015-07-08 | 中国矿业大学 | Flotation froth breaking agitator |
| CN204699638U (en) * | 2015-06-19 | 2015-10-14 | 济宁学院 | Stirrer for beaker |
| CN205020008U (en) * | 2015-09-30 | 2016-02-10 | 嘉善县汾湖铸钢厂 | Wax liquid agitating unit |
| CN205392271U (en) * | 2016-03-18 | 2016-07-27 | 湖州南丰机械制造有限公司 | A agitating unit for investment casting wax liquid |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731999A (en) * | 2016-12-27 | 2017-05-31 | 重庆欣泰发食品有限公司 | Emulsified food agitating device |
| CN107212056A (en) * | 2017-06-23 | 2017-09-29 | 张莉笛 | A kind of food processing equipment |
| CN111469547A (en) * | 2020-04-07 | 2020-07-31 | 吴学彪 | Bottom scraping and stirring system of ink box |
| CN111469547B (en) * | 2020-04-07 | 2021-11-02 | 山东泰宝信息科技集团有限公司 | Bottom scraping and stirring system of ink box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105597598B (en) | 2017-11-24 |
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| PB01 | Publication | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Denomination of invention: A stirring device for wax liquid in investment casting Effective date of registration: 20230526 Granted publication date: 20171124 Pledgee: Zhejiang Deqing Rural Commercial Bank Co.,Ltd. Zhongguan sub branch Pledgor: HUZHOU NANFENG MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2023980041859 |