CN220426820U - Casting flue gas recovery device - Google Patents
Casting flue gas recovery device Download PDFInfo
- Publication number
- CN220426820U CN220426820U CN202322021502.XU CN202322021502U CN220426820U CN 220426820 U CN220426820 U CN 220426820U CN 202322021502 U CN202322021502 U CN 202322021502U CN 220426820 U CN220426820 U CN 220426820U
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- Prior art keywords
- casting
- fume
- ladle
- guide rail
- flue gas
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Links
- 238000005266 casting Methods 0.000 title claims abstract description 70
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000003546 flue gas Substances 0.000 title claims abstract description 55
- 238000011084 recovery Methods 0.000 title claims abstract description 34
- 239000003517 fume Substances 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 abstract description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 18
- 230000000391 smoking effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model provides a casting flue gas recovery unit for retrieve the flue gas that produces when ladle casting multirow mould, including first guide rail, collection petticoat pipe, drive assembly, main flue, collection cigarette hose, position detection part and control system, first guide rail extends along the range direction of multirow mould, collection petticoat pipe sliding connection is on first guide rail, drive assembly is connected with collection petticoat pipe in order to drive collection petticoat pipe and remove, main flue and flue gas processing system intercommunication, collection cigarette hose and collection petticoat pipe and main flue intercommunication, position detection part is used for detecting the position of ladle, drive assembly and position detection part all are connected with control system electricity, control system is configured as; and controlling the driving assembly to act according to the position of the ladle detected by the position detecting component so as to move the fume collecting hood to the ladle. This application uses to remove collection petticoat pipe and follows the ladle and inhale cigarette, and the flue gas that produces when making the ladle casting multirow mould is more comprehensive by absorbing, and flue gas recovery is more effective.
Description
Technical Field
The application relates to the technical field of metal casting, in particular to a casting flue gas recovery device.
Background
Ferrosilicon is an iron alloy consisting of iron and silicon. Casting, also known as (static) casting, is the injection of a prepared casting material into a mold to solidify it, resulting in a product similar to the mold cavity.
In the process of ferrosilicon casting, a large amount of ferrosilicon casting smoke is generated when ferrosilicon casting raw materials are injected into a die, volatile gas and metal particles of ferrosilicon are contained in the ferrosilicon casting smoke, workers inhale the ferrosilicon casting smoke for a long time to influence health, and the ferrosilicon casting smoke is discharged into air at will to pollute the environment. In order to properly treat the ferrosilicon casting fume, ferrosilicon factories are basically provided with ferrosilicon casting fume recovery devices to realize the recovery of ferrosilicon casting fume.
The existing ferrosilicon casting flue gas recovery device is fixed above a casting die, when a plurality of arrangement dies are cast, flue gas close to the ferrosilicon casting flue gas recovery device can be effectively absorbed, flue gas far away from the ferrosilicon casting flue gas recovery device cannot be effectively absorbed, more residual flue gas exists, and the absorption effect is poor.
Disclosure of Invention
The application provides a casting flue gas recovery unit, its collection petticoat pipe can remove along first guide rail, when removing ladle casting multirow mould, and the drive assembly drive collection petticoat pipe is followed the ladle and is removed for collection petticoat pipe is close to mould and the ladle of being casting when collecting the cigarette, and the flue gas that produces when making the ladle casting multirow mould is more comprehensive by absorbing, and flue gas recovery is more effective.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a casting flue gas recovery device for retrieve the flue gas that produces when ladle casting multirow mould, including first guide rail, collection petticoat pipe, drive assembly, main flue, collection cigarette hose, position detection part and control system, first guide rail is followed the range direction of multirow mould extends, collection petticoat pipe sliding connection is on first guide rail, drive assembly with collection petticoat pipe is connected in order to drive collection petticoat pipe removes, main flue communicates with flue gas processing system, collection cigarette hose with collection petticoat pipe and main flue communicates, position detection part is used for detecting the position of ladle, drive assembly and position detection part all are connected with control system electricity, control system is configured as; and controlling the driving assembly to act according to the position of the ladle detected by the position detection component so as to move the fume collecting hood to the ladle.
When the device is used, the position detection part detects the casting position of the ladle and then transmits the position information of the ladle to the control system, the control system controls the driving assembly to work, the driving assembly drives the fume collecting hood to move on the first guide rail, the fume collecting hose moves along with the fume collecting hood, the fume collecting hood moves to the position of the ladle for smoking, the fume flows into the fume collecting hose after passing through the fume collecting hood, flows into the main flue through the fume collecting hose, and flows into the fume treatment system through the main flue and is treated. When the ladle is cast and the mould of one row is moved to the mould of the next row to be cast, the position detection part continuously detects the position of the ladle, the control system controls the driving assembly to work, and the driving assembly drives the fume collecting hood to move to the side of the mould of the next row to be cast along with the ladle to prepare for smoking, so that the repeated work is realized.
Compared with the prior art, this casting flue gas recovery device has set up the collection petticoat pipe that can remove along first guide rail, when removing ladle casting multirow mould, the drive assembly drive collection petticoat pipe is followed the ladle and is removed for collection petticoat pipe is close to being cast mould and ladle when collecting the cigarette, and the flue gas that produces when making the ladle casting multirow mould is more comprehensive by absorbing, and flue gas recovery is more effective.
In an embodiment of the application, the smoke collecting device further comprises a second guide rail, wherein the second guide rail is parallel to the first guide rail, and the middle part of the smoke collecting hose is slidably connected to the second guide rail.
In an embodiment of the application, the drive assembly includes driving motor, lead screw and screw, driving motor with the control system electricity is connected, the lead screw with driving motor transmission is connected and with first guide rail parallel arrangement, the screw with the lead screw cooperation, collection petticoat pipe with the screw is connected.
In an embodiment of the application, the fume collecting hood is in a round table cylinder shape, the small opening end of the fume collecting hood is in a closed structure, the large opening end is an opening, and the fume collecting hose is communicated with the small opening end of the fume collecting hood.
In an embodiment of the present application, the smoke collecting hose is a high temperature resistant hose.
In an embodiment of the present application, the first rail is a high temperature resistant rail.
In an embodiment of the present application, the driving motor is a servo motor.
In an embodiment of the present application, the position detecting component is a laser range finder.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a casting flue gas recovery device according to an embodiment of the present disclosure;
FIG. 2 is a schematic plan view of a casting fume recycling device according to an embodiment of the present disclosure;
fig. 3 is a schematic perspective view of a driving assembly of a casting flue gas recovery device according to an embodiment of the present disclosure.
Reference numerals:
010. a ladle; 020. a mold; 100. a first guide rail; 200. a fume collecting hood; 300. a drive assembly; 310. a driving motor; 320. a screw rod; 330. a nut; 400. a main flue; 500. a smoke collecting hose; 600. a position detecting section; 700. and a second guide rail.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, are also within the scope of the present application based on the embodiments herein.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Fig. 1 is a schematic perspective view of a casting flue gas recovery device according to an embodiment of the present application. Fig. 2 is a schematic plan view of a casting flue gas recovery device according to an embodiment of the present application. Fig. 3 is a schematic perspective view of a driving assembly of a casting flue gas recovery device according to an embodiment of the present disclosure.
The utility model provides a casting flue gas recovery unit can use with ladle and mould cooperation, and the crane handling ladle is to the mould next door during the casting, then pours the molten iron into the mould, can produce a large amount of flue gas at this in-process, and this casting flue gas recovery unit can collect the flue gas that produces in the casting process, collects and carries flue gas to flue gas processing system.
The application provides a casting flue gas recovery unit can be used for collecting ferrosilicon, ferromanganese, ferrochrome or ferrotungsten and other alloy exhaust flue gas when casting, and its collection petticoat pipe can remove along first guide rail, and when removing ladle casting multirow mould, the drive assembly drive collection petticoat pipe follows the ladle and removes for collection petticoat pipe is close to being cast mould and ladle when collecting the cigarette, and the flue gas that produces when making ladle casting multirow mould is more comprehensive by absorbing, and flue gas recovery is more effective. For convenience of description, the process of the present application applied to ferrosilicon casting will be described below as an example.
The embodiment of the application provides a casting flue gas recovery device, as shown in fig. 1 and 2, including first guide rail 100, collection petticoat pipe 200, drive assembly 300, main flue 400, collection smoke hose 500, position detection part 600 and control system, wherein, first guide rail 100 is the structure that provides the travel path for collection petticoat pipe 200, collection smoke hose 200 can absorb the flue gas that the ladle 010 sent, drive assembly 300 is the structure that drive collection smoke hose 200 let it remove along first guide rail 100, collection smoke hose 500 connects main flue 400 one end and connects collection smoke hose 200, main flue 400 other end connects flue gas processing system three together and is the flue gas constitution ground and the circulation path, collection smoke hose 500 and main flue 400 flow to flue gas processing system behind collection smoke gas, control system can realize the automated control of each part.
The first guide rail 100 is generally in a track structure, extends along the arrangement direction of the multiple rows of dies 020, and the fume collecting hood 200 can slide on the first guide rail 100, and the first guide rail 100 is generally made of a material with good corrosion resistance, good stress and high temperature resistance.
As shown in fig. 1, the fume collecting hood 200 is slidably connected to the first guide rail 100, and can move along the first guide rail 100 under the driving of the driving assembly 300, and the fume collecting hood 200 can absorb the fume emitted by the ladle 010. The smoke collecting hood 200 is made of high-temperature-resistant and corrosion-resistant materials.
The drive assembly 300 is coupled to the control system and the fume collection cage 200 to provide power to the fume collection cage 200, and the drive assembly 300 can drive the fume collection cage 200 to slide along the first rail 100 under the control of the control system.
The main flue 400 is generally in the shape of a pipe, and the main flue 400 is installed between the flue gas treatment system and the fume collecting hose 500 to provide a flow path for the fume, so that the fume in the fume collecting hose 500 smoothly flows into the flue gas treatment system.
The fume collecting hose 500 is also generally in the shape of a pipe, and can be bent and moved when in use, and the fume collecting hose 500 is installed between the fume collecting hood 200 and the main flue 400 to provide a flow channel for fume, so that the fume in the fume collecting hood 200 smoothly flows into the fume treatment system.
As shown in fig. 1 and 2, the position detecting member 600 is mounted on one side of the alignment direction of the mold 020, and the position detecting member 600 is generally configured to sense the distance and transmit the detected distance information to the control system.
The driving assembly 300 and the position detecting part 600 are electrically connected with a control system, and when the control system receives the position signal of the ladle 010 transmitted by the position detecting part 600, the control system controls the driving assembly 300 to act so as to move the fume collecting hood 200 to the ladle 010.
When the casting smoke recycling device is used, after the position detection part 600 detects the casting position of the ladle 010, the position information of the ladle 010 is transmitted to the control system, the control system controls the driving assembly 300 to work, the driving assembly 300 drives the smoke collecting hood 200 to move on the first guide rail 100, the smoke collecting hose 500 moves along with the smoke collecting hood 200, the smoke collecting hood 200 moves to the position where the ladle 010 is positioned for smoking, smoke flows into the smoke collecting hose 500 after passing through the smoke collecting hood 200, flows into the main flue 400 after passing through the smoke collecting hose 500, and flows into the smoke treatment system after passing through the main flue 400. When the ladle 010 is moved to the next row of the molds 020 after the casting of the molds 020 is finished, the position detecting component 600 continues to detect the position of the ladle 010, the control system controls the driving component 300 to work, and the driving component 300 drives the fume collecting hood 200 to move to the next row of the molds 020 to be cast along with the ladle 010 to prepare for smoking, so that the repeated work is realized.
Compared with the prior art, this casting flue gas recovery device has set up the collection petticoat pipe 200 that can remove along first guide rail 100, when moving ladle 010 casting multirow mould 020, drive assembly 300 drive collection petticoat pipe 200 is followed ladle 010 and is removed for collection petticoat pipe 200 is being close to mould 020 and ladle 010 that is casting when collecting the cigarette, and the flue gas that produces when making ladle 010 casting multirow mould 020 is absorbed more comprehensive, and flue gas recovery is more effective.
In some embodiments, as shown in fig. 1 and 2, the smoke collecting device further comprises a second guide rail 700, the second guide rail 700 provides a moving path for the smoke collecting hose 500, the second guide rail 700 is parallel to the first guide rail 100, so that the smoke collecting hose 500 can conveniently move along with the smoke collecting hood 200, and the middle part of the smoke collecting hose 500 is slidably connected to the second guide rail 700. When the fume collecting hood 200 moves on the first guide rail 100, the fume collecting hood 200 drives the fume collecting hose 500 to move on the second guide rail 700. When the mold 020 is elongated, the second guide rail 700 may also provide support for the smoke collecting hose 500, and may prevent the smoke collecting hose 500 from falling onto the mold 020 to hinder casting of the mold 020.
In some embodiments, the fume collection hose 500 is a high temperature resistant hose. In general, the temperature of the flue gas emitted by the ladle 010 is higher, when the flue gas flows to the smoke collecting hose 500 through the smoke collecting cover 200, the high-temperature resistant hose can bear the flue gas with temperature, the high-temperature resistant hose can resist high temperature, the fireproof performance is better, and the occurrence of some fire accidents can be avoided. When the mold 020 is long-strip-shaped, the high-temperature-resistant hose can prevent danger when it falls on the mold 020. The high temperature resistant hose is generally made of polytetrafluoroethylene, polyimide, polyphenylene sulfide or silicone rubber.
In some embodiments, the first rail 100 is a high temperature resistant rail. In general, the temperature of the flue gas emitted by the ladle 010 is higher, after the fume collecting hood 200 absorbs the flue gas, the fume collecting hood 200 can conduct the temperature of the flue gas to the first guide rail 100, the high-temperature resistant guide rail can bear the fume collecting hood 200 with temperature, the high-temperature resistant guide rail can resist high temperature, the fireproof performance is better, and some fire accidents can be avoided. The high-temperature-resistant guide rail can be a CrMnN casting heat-resistant steel guide rail generally, and the CrMnN casting heat-resistant steel guide rail has the advantages of high temperature resistance, high wear resistance, high strength and the like.
Similarly, the second guide rail 700 may be a high temperature resistant guide rail, which can resist high temperature and has better fireproof performance.
In some embodiments, as shown in fig. 3, the driving assembly 300 includes a driving motor 310, a screw 320 and a screw 330, the driving motor 310 is electrically connected with a control system, the control system can control the driving motor 310 to act according to the position of the ladle 010 detected by the position detecting component 600, the screw 320 is in transmission connection with the driving motor 310 and is parallel to the first guide rail 100, the driving motor 310 acts and drives the screw 320 to rotate, the screw 330 is matched with the screw 320, the fume collecting hood 200 is connected with the screw 330, and the screw 320 drives the fume collecting hood 200 to move along the first guide rail 100 when rotating. Such as: the ladle 010 is sequentially moved between the adjacent molds 020, the distance between the adjacent two rows of molds 020 is determined, and after the ladle 010 is moved to the next row of molds 020 to be cast after the casting of the one row of molds 020, the distance between the fume collecting hood 200 and the next row of molds 020 to be cast is also determined, so that the distance of the movement of the screw 330 is determined, and the number of turns of the driving motor 310 driving the screw 320 to rotate is determined. The structure of the driving assembly 300 can accurately drive the fume collecting hood 200 to move the following ladle 010 to next row of moulds 020 to be cast for smoking.
In some embodiments, the drive motor 310 is a servo motor. The servo motor can control the speed, the position accuracy is accurate, and the voltage signal can be converted into the torque and the rotating speed to drive the control object.
In some embodiments, the fume collecting hood 200 is a round-table cylinder, the small opening end of the fume collecting hood 200 is a closed structure, the large opening end is an opening, and the fume collecting hose 500 is communicated with the small opening end of the fume collecting hood 200. The fume collecting hood 200 is designed into a round table cylinder shape, so that the fume is more convenient to smoke, and the large opening end is an opening for smoking, so that the purpose of higher smoking can be achieved, and the smoking effect is better.
In some embodiments, the position detection component 600 is a laser rangefinder. The laser range finder can transmit the detected distance information to the external display screen, is quick in response in distance measurement, can continuously measure distance and measure distance in an ultra-long way, basically meets the requirements of high-standard measurement, is accurate in measurement data, and is efficient in transmission of the measurement data.
Although the present application is described with reference to ferrosilicon casting, it is also applicable to casting of other alloys, such as ferromanganese, ferrochrome or ferrotungsten, and the present application is not limited thereto.
Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (8)
1. A casting fume recovery device for recovering fumes generated when a ladle is used for casting a plurality of rows of moulds, comprising:
a first guide rail extending in an arrangement direction of the plurality of rows of molds;
the fume collecting hood is connected to the first guide rail in a sliding manner;
the driving assembly is connected with the fume collecting hood to drive the fume collecting hood to move;
the main flue is communicated with the flue gas treatment system;
a smoke collecting hose which is communicated with the smoke collecting hood and the main flue;
a position detecting part for detecting a position of the ladle;
a control system, the drive assembly and the position detection component each being electrically connected to the control system, the control system configured to; and controlling the driving assembly to act according to the position of the ladle detected by the position detection component so as to move the fume collecting hood to the ladle.
2. The casting fume recovery device according to claim 1, further comprising a second guide rail parallel to the first guide rail, the middle portion of the fume collection hose being slidably connected to the second guide rail.
3. The casting fume recycling device according to claim 1, wherein the driving assembly comprises a driving motor, a screw rod and a screw nut, the driving motor is electrically connected with the control system, the screw rod is in transmission connection with the driving motor and is arranged in parallel with the first guide rail, the screw nut is matched with the screw rod, and the fume collecting hood is connected with the screw nut.
4. A casting fume recovery device according to any one of claims 1 to 3, wherein the fume collecting hood is in a shape of a circular truncated cone, the small opening end of the fume collecting hood is in a closed structure, the large opening end is an opening, and the fume collecting hose is communicated with the small opening end of the fume collecting hood.
5. The casting fume recovery device according to claim 4, wherein the fume collection hose is a high temperature resistant hose.
6. The casting fume recovery device according to claim 4, wherein the first rail is a high temperature resistant rail.
7. A casting fume recovery device according to claim 3, wherein the drive motor is a servo motor.
8. The casting fume recovery device according to claim 4, wherein the position detecting means is a laser range finder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322021502.XU CN220426820U (en) | 2023-07-31 | 2023-07-31 | Casting flue gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322021502.XU CN220426820U (en) | 2023-07-31 | 2023-07-31 | Casting flue gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220426820U true CN220426820U (en) | 2024-02-02 |
Family
ID=89696216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322021502.XU Active CN220426820U (en) | 2023-07-31 | 2023-07-31 | Casting flue gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220426820U (en) |
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2023
- 2023-07-31 CN CN202322021502.XU patent/CN220426820U/en active Active
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