CN221259544U - Integrated melting furnace for metal casting - Google Patents
Integrated melting furnace for metal casting Download PDFInfo
- Publication number
- CN221259544U CN221259544U CN202322570192.7U CN202322570192U CN221259544U CN 221259544 U CN221259544 U CN 221259544U CN 202322570192 U CN202322570192 U CN 202322570192U CN 221259544 U CN221259544 U CN 221259544U
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- Prior art keywords
- melting furnace
- melting
- furnace main
- main part
- heat preservation
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- 238000002844 melting Methods 0.000 title claims abstract description 98
- 230000008018 melting Effects 0.000 title claims abstract description 98
- 238000005058 metal casting Methods 0.000 title claims abstract description 17
- 238000004321 preservation Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 239000002918 waste heat Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 29
- 239000002184 metal Substances 0.000 abstract description 29
- 239000002994 raw material Substances 0.000 abstract description 18
- 239000012535 impurity Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 description 10
- 239000002912 waste gas Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses an integrated melting furnace for metal casting, which comprises a supporting seat, wherein a melting furnace main body is arranged at the top end of the supporting seat, a furnace cover is arranged at the top end of the melting furnace main body, a melting tank is arranged in the melting furnace main body, and a blanking pipe is arranged at the bottom end of the melting tank. According to the utility model, the heat preservation cavity is arranged, the melted metal raw material can be preserved without arranging a special heat preservation furnace, so that an integrated function is realized, the resource cost is saved, the slow flow groove is arranged to prevent the metal raw material from directly flowing out, the collection work of workers is influenced, meanwhile, the sealing effect of the heat preservation cavity can be effectively improved under the mutual cooperation of the sealing ring, the sealing groove and the sealing block, the heat preservation performance of the heat preservation cavity is further enhanced, and meanwhile, the melted impurities on the inner wall of the melting tank can be scraped through the installation scraping plate, so that the function of cleaning convenience is realized, and the practicability of the main body of the melting furnace is enhanced.
Description
Technical Field
The utility model relates to the technical field of metal casting, in particular to an integrated melting furnace for metal casting.
Background
The melting furnace is a heating device for melting metal ingots and some waste metals, adding necessary alloy components, melting the metal ingots and some waste metals into molten metal with uniform properties, and further casting and cooling the molten metal into a metal product. The melting furnace is widely applied to the fields of metal smelting, bar production, waste metal recovery and the like;
Chinese patent grant publication No. CN110895104B discloses an integrated melting furnace, which relates to the technical field of metal smelting, and its technical scheme main points are: the device comprises a smelting furnace and a heat preservation furnace surrounding the smelting furnace, wherein a communication port is communicated between the smelting furnace and the heat preservation furnace, a feed port is arranged on the smelting furnace, and a discharge port is arranged on the heat preservation furnace; a heating cavity and a burner are arranged below the smelting furnace, a vacuum cavity is arranged between the heat preservation furnace and the heating cavity, and the cavity wall of the vacuum cavity forms the cavity wall of the heating cavity; the vacuum pump is communicated with the vacuum cavity, and the vacuum degree in the vacuum cavity can be changed through operation. The smelting furnace and the heat preservation furnace of the integrated smelting furnace are integrally designed, and the heating of the smelting furnace and the heat preservation of the heat preservation furnace can be realized by adopting a single burner; by arranging the vacuum cavity, the energy consumption utilization rate of the burner is high; by arranging a plurality of stirring pieces, the uniformity of the texture of the metal liquid in the melting furnace is improved, and the produced bar product has better quality. The prior art scheme has the following defects: according to the technical scheme, the plurality of abutting rollers are abutted with the abutting rings through the roller surfaces to establish rotational connection, and as the matched friction resistance of the abutting rings and the abutting rollers is smaller, the rotational resistance of the stirring piece III is smaller even if the volume and the dead weight of the stirring piece III are larger; compared with the rotary fit of a bearing with a large diameter, the cost of the abutting roller is lower, the stirring assembly structure of the technical scheme only stirs metal raw materials, so that the metal raw materials are heated uniformly, most of the metal raw materials easily precipitate in the melting furnace, the problem is difficult to solve by the prior technical scheme, and meanwhile, waste of certain resources can be caused due to the fact that a great amount of heat is contained in waste gas generated by the melting furnace and is directly released, and meanwhile, the sealing structure of the heat preservation furnace of the technical scheme is general, so that an integral melting furnace with a waste heat recovery structure for metal casting needs to be designed to solve the problem.
Disclosure of utility model
The utility model aims to provide an integrated melting furnace for metal casting, which aims to solve the problems that the metal raw materials proposed in the background art are easy to precipitate and the heat in waste gas is wasted.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an integral type melting furnace for metal casting, includes the supporting seat, the melting furnace main part is installed on the top of supporting seat, and the top of melting furnace main part installs the bell, the internally mounted of melting furnace main part has the melting jar, and the unloading pipe is installed to the bottom of melting jar, the inside of melting furnace main part of melting jar bottom is provided with the heat preservation chamber, and the inside of melting furnace main part of heat preservation chamber bottom is provided with the chute, sealed lid is installed to the bottom of melting furnace main part, the air-blower is installed to one side of bell, and one side of air-blower is linked together through the inside of air-supply line and heat preservation chamber, the sealing washer is installed to the inside bottom of chute, the sealing washer is installed to the one end that is close to the chute, and the outside of sealing washer is provided with the seal groove, the inside of melting furnace main part outside is provided with the screw thread groove, and the screw thread groove is connected with the screw thread head, the locating piece is all installed to the both sides of melting furnace main part one end, and the inside of locating piece is installed to the both sides, and the magnet is all installed to the locating piece, the locating piece is all close to the both sides, all be provided with the locating slot and all is connected with the locating slot.
When the integrated melting furnace for metal casting is used, the heat preservation cavity is arranged, so that the melted metal raw material can be preserved, a special heat preservation furnace is not required, the integrated function is realized, the resource cost is saved, and meanwhile, the sealing effect of the heat preservation cavity can be effectively improved through the mutual cooperation of the sealing ring, the sealing groove and the sealing block, and the heat preservation performance of the heat preservation cavity is further enhanced.
Preferably, the internally mounted of melting jar has the mounting panel, and the internally mounted of mounting panel has driving motor, stirring subassembly is installed to the bottom of mounting panel, and evenly installs the scraper blade in the outside of stirring subassembly, the mount pad is installed in the outside of stirring subassembly bottom, and the internally mounted of mount pad has the double-end motor, the puddler is all installed to the both sides of double-end motor, and evenly installs stirring vane in the outside of puddler.
Preferably, the inside of melting furnace main part is provided with the air outlet, the purifying box is installed to one side that the air-blower was kept away from to the melting furnace main part, and the filter screen is installed respectively to the inside of purifying box and purifying seat, waste heat collection box is installed to one side that the melting furnace main part was kept away from to the purifying box, the division board is evenly installed to the inside of purifying seat, and the active carbon adsorption net is all installed in the outside of division board.
Preferably, the section of the partition plate is wavy, and the partition plates are distributed in the purifying seat at equal intervals.
Preferably, guide blocks are arranged on two sides of the melting tank, guide grooves are formed in the inner sides of the positioning blocks, and the guide grooves are connected with the guide blocks.
Preferably, the width of the guide groove is equal to that of the guide block, and the guide groove and the guide block are symmetrically arranged relative to the central axis of the melting tank.
Compared with the prior art, the utility model has the beneficial effects that: the integrated melting furnace for metal casting not only realizes the integrated function, but also realizes the anti-sedimentation and anti-sedimentation functions;
(1) Through setting up the heat preservation chamber, can keep warm the metal raw materials after melting, need not to set up special holding furnace again, thereby realize the function of integral type, resource cost has been practiced thrift, through setting up the chute, with prevent that the metal raw materials from directly flowing out, influence staff's collection work, simultaneously through under sealing ring, seal groove and sealing block's mutually supporting, can effectual improvement heat preservation chamber's sealed effect, further strengthened the heat preservation performance of heat preservation chamber, can strike off the melting impurity on the melting tank inner wall through the installation scraper blade simultaneously, thereby realize the function of being convenient for clear up, the practicality of melting furnace main part has been strengthened;
(2) Through mutually supporting down between puddler and the stirring vane, can prevent that the phenomenon such as sediment from appearing in the metal raw materials to further make the inside metal raw materials of melting jar can be abundant evenly that is heated, thereby the effectual efficiency that improves the melting work, impurity in the waste gas can be filtered through the installation filter screen simultaneously, can adsorb the harmful substance in the waste gas through purifying the seat simultaneously, heat in the waste gas gets into in the waste heat collection box after purifying and collects, resource cost has been practiced thrift, simultaneously through setting up the division board to be the wave, can prolong the absorption duration of active carbon adsorption net, further improve the use value of purifying the case.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional elevation view of the present utility model;
FIG. 2 is a schematic view of the structure of FIG. 1A according to the present utility model;
FIG. 3 is a schematic elevational cross-sectional view of a melting furnace tank according to the present utility model;
FIG. 4 is a schematic view of a three-dimensional structure of a purge seat according to the present utility model;
Fig. 5 is a schematic three-dimensional structure of the stirring assembly of the present utility model.
Reference numerals in the drawings illustrate: 1. a furnace cover; 2. a positioning block; 3. a positioning groove; 4. a guide groove; 5. a guide block; 6. a melting furnace main body; 7. discharging pipes; 8. a heat preservation cavity; 9. a blower; 10. an air inlet pipe; 11. a support base; 12. sealing cover; 13. a slow flow groove; 14. a purifying box; 15. a filter screen; 16. a waste heat collection box; 17. a purifying seat; 18. an air outlet; 19. a first magnet; 20. a second magnet; 21. a seal ring; 22. sealing grooves; 23. a sealing block; 24. a thread head; 25. a thread groove; 26. a melting tank; 27. a mounting plate; 28. a stirring assembly; 29. stirring blades; 30. a stirring rod; 31. a mounting base; 32. a double-ended motor; 33. a scraper; 34. a driving motor; 35. a partition plate; 36. an activated carbon adsorption net.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
Referring to fig. 1-5, an embodiment of the present utility model is provided: an integrated melting furnace for metal casting comprises a supporting seat 11, wherein the top end of the supporting seat 11 is provided with a melting furnace main body 6;
An air outlet 18 is formed in the melting furnace main body 6, a purifying box 14 is arranged on one side, far away from the air blower 9, of the melting furnace main body 6, a filter screen 15 and a purifying seat 17 are respectively arranged in the purifying box 14, a waste heat collecting box 16 is arranged on one side, far away from the melting furnace main body 6, of the purifying box 14, a partition plate 35 is uniformly arranged in the purifying seat 17, active carbon adsorption nets 36 are arranged on the outer sides of the partition plate 35, the cross section of the partition plate 35 is wave-shaped, and the partition plates 35 are distributed in the purifying seat 17 at equal intervals;
Specifically, as shown in fig. 1 and fig. 4, during use, harmful substances in the exhaust gas can be adsorbed by the purification seat 17, and heat in the purified exhaust gas enters the waste heat collection box 16 to be collected, so that the resource cost is saved, and meanwhile, the adsorption duration of the activated carbon adsorption net 36 can be prolonged by arranging the partition plate 35 in a wave shape, so that the use value of the purification box 14 is further improved;
the top end of the melting furnace main body 6 is provided with a furnace cover 1, and the melting furnace main body 6 is internally provided with a melting tank 26;
the inside of the melting tank 26 is provided with a mounting plate 27, the inside of the mounting plate 27 is provided with a driving motor 34, the bottom end of the mounting plate 27 is provided with a stirring assembly 28, the outside of the stirring assembly 28 is uniformly provided with a scraping plate 33, the outside of the bottom end of the stirring assembly 28 is provided with a mounting seat 31, the inside of the mounting seat 31 is provided with a double-head motor 32, both sides of the double-head motor 32 are provided with stirring rods 30, and the outside of the stirring rods 30 is uniformly provided with stirring blades 29;
Specifically, as shown in fig. 1 and 3, during use, the stirring rod 30 and the stirring blade 29 are matched with each other to prevent the metal raw material from precipitating and the like, so that the metal raw material in the melting tank 26 can be heated uniformly and sufficiently, and the melting efficiency is effectively improved;
Guide blocks 5 are arranged on two sides of the melting tank 26, guide grooves 4 are arranged on the inner sides of the positioning blocks 2, the guide grooves 4 are connected with the guide blocks 5, the width of each guide groove 4 is equal to that of each guide block 5, and the guide grooves 4 and the guide blocks 5 are symmetrically arranged relative to the central axis of the melting tank 26;
Specifically, as shown in fig. 1, during use, the melting tank 26 can be guided and limited by the guide groove 4 and the guide block 5;
And the unloading pipe 7 is installed to the bottom of melting jar 26, the inside of melting furnace main part 6 of melting jar 26 bottom is provided with heat preservation chamber 8, and the inside of melting furnace main part 6 of heat preservation chamber 8 bottom is provided with the constant head tank 13, sealed lid 12 is installed to the bottom of melting furnace main part 6, air-blower 9 is installed to one side of bell 1, and one side of air-blower 9 is linked together through air-supply line 10 and the inside of heat preservation chamber 8, sealing block 23 is installed to the bottom of constant head tank 13 inside, sealing ring 21 is installed to the one end that sealing lid 12 is close to constant head tank 13, and the outside of sealing ring 21 is provided with seal groove 22, seal groove 22 is connected with sealing block 23, the one end that sealing lid 12 is close to constant head tank 13 is installed screw thread head 24, the inside of melting furnace main part 6 outside is provided with screw thread groove 25, and screw thread groove 25 is connected with screw thread head 24, locating piece 2 is all installed to the both sides that bell 1 is close to one end of melting furnace main part 6, and the inside of locating piece 2 is all installed second magnet 20, the both sides that locating piece 2 are close to 1 one end all are provided with constant head tank 3, and the bottom of constant head tank 3 all installs first magnet 19, all be connected with constant head piece 3.
Working principle: when the utility model is used, firstly, the furnace cover 1 is opened, the metal raw material is poured into the melting tank 26 for melting, at the moment, the activated carbon adsorption net 36 is started to drive the stirring assembly 28 to rotate, and under the mutual cooperation of the stirring blades 29 and the stirring rod 30, the metal raw material in the melting tank 26 can be sufficiently and uniformly stirred, so that the metal raw material is uniformly heated and melted, the working efficiency is improved, the melted metal raw material falls into the heat preservation cavity 8 through the blanking pipe 7 for heat preservation, at the moment, the blower 9 is started to always keep the temperature of the heat preservation cavity 8, and the worker rotates the sealing cover 12 to take out the metal raw material;
Secondly, the waste gas after melting enters the inside of the purifying box 14 through the air outlet 18, impurities in the waste gas can be filtered through the filter screen 15, meanwhile, harmful substances in the waste gas can be adsorbed through the purifying seat 17, and heat in the waste gas after purification enters the waste heat collecting box 16 for collection, so that the resource cost is saved.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. The utility model provides an integral type melting furnace for metal casting, includes supporting seat (11), its characterized in that: melting furnace main part (6) are installed on the top of supporting seat (11), and bell (1) are installed on the top of melting furnace main part (6), melting tank (26) are installed to the internally mounted of melting furnace main part (6), and unloading pipe (7) are installed to the bottom of melting tank (26), the inside of melting furnace main part (6) of melting tank (26) bottom is provided with heat preservation chamber (8), and the inside of melting furnace main part (6) of heat preservation chamber (8) bottom is provided with slow flow groove (13), sealed lid (12) are installed to the bottom of melting furnace main part (6), air-blower (9) are installed to one side of bell (1), and one side of the blower (9) is communicated with the inside of the heat preservation cavity (8) through an air inlet pipe (10), a sealing block (23) is arranged at the bottom end of the inside of the slow flow groove (13), a sealing ring (21) is arranged at one end of the sealing cover (12) close to the slow flow groove (13), a sealing groove (22) is arranged at the outer side of the sealing ring (21), the sealing groove (22) is connected with the sealing block (23), a screw thread head (24) is arranged at one end of the sealing cover (12) close to the slow flow groove (13), a screw thread groove (25) is arranged in the melting furnace main body (6) at the outer side of the slow flow groove (13), and screw thread groove (25) are connected with screw thread head (24), locating piece (2) are all installed to the both sides that bell (1) is close to melting furnace main part (6) one end, and the inside of locating piece (2) is all installed second magnet (20), the both sides that bell (1) one end are close to locating piece (2) all are provided with constant head tank (3), and first magnet (19) are all installed to the bottom of constant head tank (3), locating piece (2) all are connected with constant head tank (3).
2. An integral melting furnace for metal casting as set forth in claim 1 wherein: the internally mounted of melting jar (26) has mounting panel (27), and the internally mounted of mounting panel (27) has driving motor (34), stirring subassembly (28) are installed to the bottom of mounting panel (27), and evenly install scraper blade (33) in the outside of stirring subassembly (28), mount pad (31) are installed in the outside of stirring subassembly (28) bottom, and the internally mounted of mount pad (31) has double-end motor (32), puddler (30) are all installed to the both sides of double-end motor (32), and stirring vane (29) are evenly installed in the outside of puddler (30).
3. An integral melting furnace for metal casting as set forth in claim 1 wherein: the inside of melting furnace main part (6) is provided with air outlet (18), purifying box (14) are installed to one side that melting furnace main part (6) kept away from air-blower (9), and filter screen (15) and purification seat (17) are installed respectively to the inside of purifying box (14), waste heat collection box (16) are installed to one side that melting furnace main part (6) was kept away from to purifying box (14), division board (35) are evenly installed to the inside of purification seat (17), and active carbon adsorption net (36) are all installed in the outside of division board (35).
4. An integral melting furnace for metal casting as set forth in claim 3 wherein: the section of the partition plate (35) is wavy, and the partition plate (35) is distributed in the purifying seat (17) at equal intervals.
5. An integral melting furnace for metal casting as set forth in claim 1 wherein: guide blocks (5) are arranged on two sides of the melting tank (26), guide grooves (4) are formed in the inner sides of the positioning blocks (2), and the guide grooves (4) are connected with the guide blocks (5).
6. An integrated melting furnace for metal casting as set forth in claim 5 wherein: the width of the guide groove (4) is equal to that of the guide block (5), and the guide groove (4) and the guide block (5) are symmetrically arranged relative to the central axis of the melting tank (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322570192.7U CN221259544U (en) | 2023-09-21 | 2023-09-21 | Integrated melting furnace for metal casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322570192.7U CN221259544U (en) | 2023-09-21 | 2023-09-21 | Integrated melting furnace for metal casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221259544U true CN221259544U (en) | 2024-07-02 |
Family
ID=91627842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322570192.7U Active CN221259544U (en) | 2023-09-21 | 2023-09-21 | Integrated melting furnace for metal casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221259544U (en) |
-
2023
- 2023-09-21 CN CN202322570192.7U patent/CN221259544U/en active Active
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