CN220698213U - Circulating cooling device for investment casting production - Google Patents
Circulating cooling device for investment casting production Download PDFInfo
- Publication number
- CN220698213U CN220698213U CN202322161993.8U CN202322161993U CN220698213U CN 220698213 U CN220698213 U CN 220698213U CN 202322161993 U CN202322161993 U CN 202322161993U CN 220698213 U CN220698213 U CN 220698213U
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- air
- water
- cooling
- cooling box
- conveying
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- 238000001816 cooling Methods 0.000 title claims abstract description 101
- 238000005495 investment casting Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 238000007664 blowing Methods 0.000 claims abstract description 55
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000003860 storage Methods 0.000 claims description 15
- 238000005086 pumping Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of investment casting production, and discloses a circulating cooling device for investment casting production, which comprises a conveying frame; the conveying roller array is movably arranged on the conveying frame; the cooling box is fixedly arranged in the middle of the conveying frame; the water tank is arranged at the bottom of the middle of the conveying frame. According to the utility model, through the cooperation of structures such as the air blowing plate, the flexible curtain cloth and the water tank, when the air conditioner works, part of air in the air cooling assembly is transmitted to the air blowing plate through the exhaust pipe by starting the side blowing assembly on the air cooling assembly, so that water vapor can only move leftwards, the possibility of leakage from the right side is avoided, meanwhile, due to the effect of the left flexible curtain cloth, the water vapor is liquefied on the surface of the air conditioner, flows along the surface of the air conditioner, returns to the water tank again to work, a large amount of waste of water resources is reduced, and the purpose of recycling the water resources is realized.
Description
Technical Field
The utility model relates to the technical field of investment casting production, in particular to a circulating cooling device for investment casting production.
Background
The investment casting is a casting produced by adopting an investment casting process, and when the investment casting is produced, molten metal is required to be cooled and demoulded in a heat conduction die, and when the investment casting is cooled, water cooling and air cooling are mostly adopted, however, when the investment casting is cooled, a large amount of water is required when the die is cooled due to the fact that the die has high temperature, so that a large amount of water vapor is generated, however, when the investment casting is cooled in the prior art, the water vapor is not recycled, so that in order to keep the cooling effect, water is required to be continuously supplemented, and the water vapor is directly diffused in the air, so that a large amount of water resource is wasted.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a circulating cooling device for investment casting production, which has the advantages of cyclic utilization of water resources and good cooling effect.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a circulating cooling device for investment casting production, which comprises
A carriage;
the conveying roller array is movably arranged on the conveying frame;
the cooling box is fixedly arranged in the middle of the conveying frame;
the water tank is arranged at the bottom of the middle of the conveying frame;
the conveying plate and the die are arranged at the top end of the conveying roller from bottom to top;
the air cooling assembly is arranged on the cooling box and the water tank and used for disturbing and cooling an internal air field;
the side blowing assembly is arranged at the right end of the cooling box and is fixedly connected with the air cooling assembly;
the flexible curtain cloth is arranged at the left side of the cooling box;
the side-blown assembly comprises an exhaust pipe, a transmission pipe and a blowing plate, wherein the exhaust pipe is fixedly arranged on the front side and the rear side of the air cooling assembly, the blowing plate is symmetrically arranged on the front side and the rear side of the right end of the cooling box and blows to the left side, and the transmission pipe is arranged at the outer end of the exhaust pipe and is communicated with the blowing plate.
As a preferable technical scheme of the utility model, the cooling box is also provided with
The water cooling component arrays are arranged on the front side and the rear side of the cooling box;
the water cooling assembly comprises water pumping plates and water spraying ports, the water pumping plate arrays are arranged on the inner walls of the front side and the rear side of the cooling box in a staggered mode, and the water spraying ports are arranged on the surfaces of the water pumping plates and spray water on the surfaces of the dies;
the air cooling assembly comprises a heat exchange tube, a three-way pipe, an air suction pipe, a fan, a rotary blowing disc, a transmission unit and an air delivery pipe, wherein the heat exchange tube is symmetrically arranged inside the water tank in a left-right mode, the three-way pipe is fixedly arranged at the front end of the heat exchange tube, the air suction pipe is fixedly arranged at the top of the three-way pipe, the fan is movably arranged on the surface of the air suction pipe, the rotary blowing disc array is movably arranged at the top of the cooling box, the transmission unit is movably arranged at the top of the cooling box and the surface of the rotary blowing disc, the lower end of the air delivery pipe is inserted into the rotary blowing disc, the front end of the air delivery pipe is communicated with the air suction pipe, and the transmission pipe is inserted into the front end and the rear end of the right side of the air delivery pipe.
As a preferable technical scheme of the utility model, the transmission unit comprises a transmission gear, a transmission chain and a driving gear, wherein the transmission gear is fixedly arranged at the edge of the top of the rotary blowing disc, the driving gear is arranged at the rear end of the top of the cooling box, and the transmission chain is sleeved on the surfaces of the transmission gear and the driving gear and meshed with the surfaces of the transmission gear and the driving gear.
As a preferable technical scheme of the utility model, the right side of the cooling box is also provided with
The movable sealing assembly is arranged on the right side of the cooling box;
the movable sealing assembly comprises a storage plate, a thread groove, a lifting screw and a movable baffle, wherein the storage plate is fixedly arranged on the right side of the cooling box, the lifting screw is movably arranged in the storage plate, the movable baffle is movably arranged in the storage plate, and the thread groove is arranged on the surface of the movable baffle and is in spiral connection with the movable baffle.
As a preferable technical scheme of the utility model, the bottom circumferential array of the rotary blowing disk is provided with air outlets, and the bottom circumferential array of the rotary blowing disk is provided with air baffles.
As an optimal technical scheme of the utility model, two heat exchange pipes are symmetrically arranged left and right, and filter blocks are arranged at the rear ends of the two heat exchange pipes.
As a preferable technical scheme of the utility model, the left side and the right side of the water tank are respectively provided with a water stop plate, and the maximum height value of the water stop plates is lower than that of the conveying rollers.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, through the cooperation of structures such as the air blowing plate, the flexible curtain cloth and the water tank, when the air conditioner works, part of air in the air cooling assembly is transmitted to the air blowing plate through the exhaust pipe by starting the side blowing assembly on the air cooling assembly, so that water vapor can only move leftwards, the possibility of leakage from the right side is avoided, meanwhile, due to the effect of the left flexible curtain cloth, the water vapor is liquefied on the surface of the air conditioner, flows along the surface of the air conditioner, returns to the water tank again to work, a large amount of waste of water resources is reduced, and the purpose of recycling the water resources is realized.
2. According to the utility model, by matching the structures of the air cooling assembly, the water cooling assembly, the mold and the like, when the air cooling assembly is started to disturb an internal air field, the flow of internal air and the reduction of water temperature in a water tank are accelerated, and then the surface of the mold is comprehensively cooled by matching the water cooling assembly, so that the temperature of the mold can be quickly reduced, and the internal structure of the mold can be quickly molded.
Drawings
FIG. 1 is a schematic view of the overall appearance structure of the present utility model;
FIG. 2 is a schematic view of a front view in cross section;
FIG. 3 is a schematic top view of the present utility model;
FIG. 4 is a schematic view of a bottom cross-sectional structure of the present utility model;
fig. 5 is a schematic view of a right-side cross-sectional structure of the present utility model.
In the figure: 1. a carriage; 2. a conveying roller; 3. a cooling box; 4. a water tank; 5. a water-stop plate; 6. a heat exchange tube; 7. a three-way pipe; 8. an air suction pipe; 9. a blower; 10. rotating the blowing disc; 11. a transmission gear; 12. a drive chain; 13. a drive gear; 14. a gas pipe; 15. a conveying plate; 16. a mold; 17. a filter block; 18. an air outlet; 19. a wind shielding plate; 20. a storage plate; 21. lifting screw rods; 22. a movable baffle; 23. a thread groove; 24. an exhaust pipe; 25. a transmission tube; 26. a blowing plate; 27. a flexible curtain; 28. a water pumping plate; 29. and a water jet.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in FIGS. 1 to 5, the utility model provides a circulating cooling device for investment casting production, which comprises
A carriage 1;
the conveying rollers 2, the conveying roller 2 array is movably arranged on the conveying frame 1;
the cooling box 3 is fixedly arranged in the middle of the conveying frame 1;
the water tank 4 is arranged at the bottom of the middle of the conveying frame 1;
a conveying plate 15 and a die 16, the conveying plate 15 and the die 16 being placed on top of the conveying roller 2 from bottom to top;
the air cooling assembly is arranged on the cooling box 3 and the water tank 4 and used for disturbing and cooling an internal air field;
the side blowing component is arranged at the right end of the cooling box 3 and is fixedly connected with the air cooling component;
a flexible curtain cloth 27, wherein the flexible curtain cloth 27 is arranged at the left side of the cooling box 3;
the side-blowing assembly comprises an exhaust pipe 24, a transmission pipe 25 and a blowing plate 26, wherein the exhaust pipe 24 is fixedly arranged on the front side and the rear side of the air-cooling assembly, the blowing plate 26 is symmetrically arranged on the front side and the rear side of the right end of the cooling box 3, and the transmission pipe 25 is arranged at the outer end of the exhaust pipe 24 and communicated with the blowing plate 26.
When the device works, the water vapor generated by cooling can only move leftwards under the action of the right air blowing plate 26, so that the water vapor contacts with the left flexible curtain cloth 27, is liquefied under the mesh lines on the surface of the left flexible curtain cloth, and then returns to the water tank 4 again for working, and finally, the purpose of recycling water resources is achieved;
by providing the conveying plate 15, the mold 16 can be smoothly moved on the conveying roller 2.
Wherein the cooling box 3 is also provided with
The water cooling assembly arrays are arranged on the front side and the rear side of the cooling box 3;
the water cooling assembly comprises water pumping plates 28 and water spraying ports 29, the water pumping plates 28 are arranged on the inner walls of the front side and the rear side of the cooling box 3 in an array manner, the water spraying ports 29 are arranged on the surface of the water pumping plates 28 in an array manner, and water is sprayed on the surface of the die 16;
the air cooling assembly comprises a heat exchange tube 6, a three-way tube 7, an air suction tube 8, a fan 9, a rotary blowing disc 10, a transmission unit and an air delivery tube 14, wherein the heat exchange tube 6 is symmetrically arranged inside the water tank 4, the three-way tube 7 is fixedly arranged at the front end of the heat exchange tube 6, the air suction tube 8 is fixedly arranged at the top of the three-way tube 7, the fan 9 is movably arranged on the surface of the air suction tube 8, the rotary blowing disc 10 is movably arranged at the top of the cooling box 3, the transmission unit is movably arranged at the top of the cooling box 3 and the surface of the rotary blowing disc 10, the lower end of the air delivery tube 14 is inserted into the rotary blowing disc 10, the front end of the air delivery tube 14 is communicated with the air suction tube 8, and the transmission tube 25 is inserted into the front end and the rear end of the right side of the air delivery tube 14.
When the device works, the fan 9 is started to pump outside air into the heat exchange tube 6 in the water tank 4 to exchange heat with water in the water tank 4, then the air enters the air suction tube 8 through the three-way tube 7 and is blown to the rotary blowing disc 10 through the air delivery tube 14 to be discharged, and meanwhile, the water pumping plate 28 is started to pump the water in the water tank 4 and is aligned to the surface of the die 16 through the water spraying port 29 to be sprayed out, so that the temperature of the die 16 is further reduced, and the internal structure is rapidly formed;
by arranging the heat exchange tube 6, when the water temperature is higher, the water is cooled, and when the air is higher, the air is cooled, so that a complementary effect is achieved.
The transmission unit comprises a transmission gear 11, a transmission chain 12 and a driving gear 13, wherein the transmission gear 11 is fixedly arranged at the edge of the top of the rotary blowing disc 10, the driving gear 13 is arranged at the rear end of the top of the cooling box 3, and the transmission chain 12 is sleeved on the surfaces of the transmission gear 11 and the driving gear 13 and meshed with the surfaces of the transmission gear 11 and the driving gear 13.
When the rotary blowing disc works, the driving gear 13 is started, the transmission gear 11 is driven to rotate by the transmission chain 12 meshed with the surface, and then the rotary blowing disc 10 rotates;
by providing a transmission unit, the rotation of the plurality of rotary blowing disks 10 can be controlled.
Wherein the right side of the cooling box 3 is also provided with
The movable sealing component is arranged on the right side of the cooling box 3;
the movable sealing assembly comprises a storage plate 20, a thread groove 23, a lifting screw 21 and a movable baffle 22, wherein the storage plate 20 is fixedly arranged on the right side of the cooling box 3, the lifting screw 21 is movably arranged in the storage plate 20, the movable baffle 22 is movably arranged in the storage plate 20, the thread groove 23 is arranged on the surface of the movable baffle 22, and the movable baffle 22 is in spiral connection with the movable baffle 22.
When the cooling box is in operation, the lifting screw rod 21 in the storage plate 20 is started, and the movable baffle 22 is lifted up through the cooperation of the lifting screw rod and the thread groove 23, so that a movable inlet and outlet assembly on the right side of the cooling box 3 is opened, and the die 16 can smoothly enter the cooling box 3;
by providing a movable sealing assembly, entry of articles and shielding of the cooling box 3 are facilitated.
Wherein, the bottom circumference array of the rotary blowing disk 10 is provided with air outlets 18, and the bottom circumference array of the rotary blowing disk 10 is provided with air baffles 19.
In operation, air in the rotary blowing disc 10 is discharged through the air outlet 18;
by arranging the air baffles 19 in a circumferential array at the bottom of the rotary blowing disk 10, the disturbance degree and the action area of the air are accelerated.
Two heat exchange tubes 6 are symmetrically arranged left and right, and filter blocks 17 are arranged at the rear ends of the two heat exchange tubes 6.
During operation, air pumped into the heat exchange tube 6 is filtered through the filter block 17;
by arranging the filter blocks 17 at the rear ends of the two heat exchange tubes 6, impurities in the air are reduced, and the work is convenient.
Wherein, the left and right sides of basin 4 all are provided with the water-stop sheet 5, and the maximum height value of water-stop sheet 5 is less than the maximum height value of conveying roller 2.
When the water-stop device works, the water-stop plate 5 stops water vapor from flowing out from the lower part and heightens the water level of the water tank 4;
by making the maximum height value of the water stop plate 5 lower than the maximum height value of the conveying roller 2, the conveying roller 2 is contacted with the water tank 4, and meanwhile, as the conveying roller 2 is contacted with the conveying plate 15 at the bottom of the die 16, part of heat generated by the die 16 is transmitted to the conveying roller 2 through the conveying plate 15 at the bottom and then enters the water tank 4 for heat exchange, so that the cooling speed of the die 16 is increased.
The working principle and the using flow of the utility model are as follows:
in operation, the conveying plate 15 is placed on the conveying roller 2, and then the molten steel-filled mold 16 is placed;
simultaneously, the lifting screw rod 21 in the storage plate 20 is started, and the movable baffle 22 is lifted by being matched with the thread groove 23, so that a movable inlet and outlet assembly on the right side of the cooling box 3 is opened, and the die 16 can smoothly enter the cooling box 3;
when entering, the driving gear 13 is started, and the transmission gear 11 is driven to rotate by the transmission chain 12 meshed with the surface, so that the rotary blowing disc 10 rotates;
simultaneously, the fan 9 is started, outside air is filtered through the filter block 17, enters the heat exchange tube 6 in the water tank 4 and exchanges heat with water in the water tank 4, so that when the water temperature is high, the water is cooled, when the air is high, the air is cooled, a complementary effect is achieved, then the air enters the air suction tube 8 through the three-way tube 7, is blown into the rotary blowing disc 10 through the air delivery tube 14 and is discharged from the air outlet 18 at the bottom of the rotary blowing disc 10, and meanwhile, the rotary blowing disc 10 rotates, so that the sprayed air rotates, and the blowing range of the air is more comprehensive and wide due to the air baffle 19;
meanwhile, as the conveying roller 2 is contacted with the water tank 4, and the conveying roller 2 is contacted with the conveying plate 15 at the bottom of the die 16, part of heat generated by the die 16 is transmitted to the conveying roller 2 through the conveying plate 15 at the bottom and then enters the water tank 4 for heat exchange, so that the cooling speed of the die 16 is increased;
simultaneously, the water pumping plate 28 is started to pump water in the water tank 4 and spray the water out of the surface of the die 16 through the water spraying port 29, so that the temperature of the die 16 is further reduced, and the internal structure is quickly formed;
the water vapor generated by cooling can only move leftwards under the action of the right air blowing plate 26, so that the water vapor contacts with the left flexible curtain cloth 27, is liquefied under the net lines on the surface of the water vapor, and returns to the water tank 4 again for working, and finally, the purpose of recycling water resources is achieved.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an investment casting production is with circulative cooling device which characterized in that: comprises the following steps of
A carriage (1);
the conveying rollers (2) are movably arranged on the conveying frame (1) in an array manner;
the cooling box (3) is fixedly arranged in the middle of the conveying frame (1);
the water tank (4) is arranged at the bottom of the middle of the conveying frame (1);
a conveying plate (15) and a die (16), wherein the conveying plate (15) and the die (16) are arranged at the top end of the conveying roller (2) from bottom to top;
the air cooling assembly is arranged on the cooling box (3) and the water tank (4) and used for disturbing and cooling an internal air field;
the side blowing assembly is arranged at the right end of the cooling box (3) and is fixedly connected with the air cooling assembly;
the flexible curtain cloth (27) is arranged on the left side of the cooling box (3);
the side-blown assembly comprises an exhaust pipe (24), a transmission pipe (25) and a blowing plate (26), wherein the exhaust pipe (24) is fixedly arranged on the front side and the rear side of the air cooling assembly, the blowing plate (26) is symmetrically arranged on the front side and the rear side of the right end of the cooling box (3) and blows to the left side, and the transmission pipe (25) is arranged at the outer end of the exhaust pipe (24) and is communicated with the blowing plate (26).
2. The circulating cooling apparatus for investment casting production of claim 1, wherein: the cooling box (3) is also internally provided with
The water cooling assembly arrays are arranged on the front side and the rear side of the cooling box (3);
the water cooling assembly comprises a water pumping plate (28) and water spraying ports (29), the water pumping plate (28) is arranged on the inner walls of the front side and the rear side of the cooling box (3) in an array staggered mode, and the water spraying ports (29) are arranged on the surface of the water pumping plate (28) to spray water on the surface of the die (16);
the air cooling assembly comprises a heat exchange tube (6), a three-way pipe (7), an air suction tube (8), a fan (9), a rotary blowing disc (10), a transmission unit and an air conveying pipe (14), wherein the heat exchange tube (6) is symmetrically installed inside a water tank (4), the three-way pipe (7) is fixedly installed at the front end of the heat exchange tube (6), the air suction tube (8) is fixedly installed at the top of the three-way pipe (7), the fan (9) is movably installed on the surface of the air suction tube (8), the rotary blowing disc (10) is movably installed at the top of a cooling box (3), the transmission unit is movably installed at the top of the cooling box (3) and the surface of the rotary blowing disc (10), the lower end of the air conveying pipe (14) is inserted into the rotary blowing disc (10), the front end of the air conveying pipe (14) is communicated with the air suction tube (8), and the transmission pipe (25) is inserted into the front end and the rear end of the right side of the air conveying pipe (14).
3. The circulating cooling apparatus for investment casting production of claim 2, wherein: the transmission unit comprises a transmission gear (11), a transmission chain (12) and a driving gear (13), wherein the transmission gear (11) is fixedly arranged at the edge of the top of the rotary blowing disc (10), the driving gear (13) is arranged at the rear end of the top of the cooling box (3), and the transmission chain (12) is meshed with the surfaces of the transmission gear (11) and the driving gear (13) in a sleeved mode.
4. The circulating cooling apparatus for investment casting production of claim 1, wherein: the right side of the cooling box (3) is also provided with
The movable sealing assembly is arranged on the right side of the cooling box (3);
the movable sealing assembly comprises a storage plate (20), a thread groove (23), a lifting screw (21) and a movable baffle (22), wherein the storage plate (20) is fixedly installed on the right side of the cooling box (3), the lifting screw (21) is movably installed inside the storage plate (20), the movable baffle (22) is movably placed inside the storage plate (20), and the thread groove (23) is formed in the surface of the movable baffle (22) and is in spiral connection with the movable baffle (22).
5. The circulating cooling apparatus for investment casting production of claim 2, wherein: the bottom circumference array of the rotary blowing disc (10) is provided with air outlets (18), and the bottom circumference array of the rotary blowing disc (10) is provided with air baffles (19).
6. The circulating cooling apparatus for investment casting production of claim 2, wherein: two heat exchange tubes (6) are symmetrically arranged at left and right, and filter blocks (17) are arranged at the rear ends of the two heat exchange tubes (6).
7. The circulating cooling apparatus for investment casting production of claim 1, wherein: the left side and the right side of the water tank (4) are both provided with water-stop plates (5), and the maximum height value of the water-stop plates (5) is lower than that of the conveying roller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322161993.8U CN220698213U (en) | 2023-08-11 | 2023-08-11 | Circulating cooling device for investment casting production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322161993.8U CN220698213U (en) | 2023-08-11 | 2023-08-11 | Circulating cooling device for investment casting production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220698213U true CN220698213U (en) | 2024-04-02 |
Family
ID=90444359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322161993.8U Active CN220698213U (en) | 2023-08-11 | 2023-08-11 | Circulating cooling device for investment casting production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220698213U (en) |
-
2023
- 2023-08-11 CN CN202322161993.8U patent/CN220698213U/en active Active
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