CN204449314U - The continuous material collecting device of submicron metal production equipment - Google Patents
The continuous material collecting device of submicron metal production equipment Download PDFInfo
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- CN204449314U CN204449314U CN201520107380.9U CN201520107380U CN204449314U CN 204449314 U CN204449314 U CN 204449314U CN 201520107380 U CN201520107380 U CN 201520107380U CN 204449314 U CN204449314 U CN 204449314U
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- deposited tube
- receiving chamber
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Abstract
The utility model belongs to metal powder preparation technical field, relate to the continuous material collecting device of submicron metal production equipment: the liquid in-out end of coil pipe is communicated with the liquid in-out end of cooling back installation respectively, coil pipe is arranged at intervals with the arm stretched out being communicated with coil pipe inner chamber downwards, each arm is set with cooling deposited tube, be tightly connected between the upper end of cooling deposited tube and the arm outer wall overlapped, the upper end of cooling deposited tube has and cools the air supply pipe of the chamber formed between deposited tube inwall and its arm outer wall overlapped, the sidewall of cooling deposited tube is or/and diapire is arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube tube wall, the diapire of vacuum receiving chamber is provided with the recovering hopper of taper type, the diapire of recovering hopper is provided with the drainage conduit with the inner space of recovering hopper, drainage conduit is arranged at intervals with the valve that two or more controls drainage conduit break-make, the utility model is applicable to the continuous material collecting device making submicron metal production equipment.
Description
Technical field
The utility model belongs to submicron metal preparing technical field, refers in particular to a kind of continuous material collecting device of submicron metal production equipment.
Background technology
Chinese patent CN104325149A discloses one " applying electronic reaction bundle makes the device and method of submicron metal ", its technical characteristics is: applying electronic reaction bundle makes the device of submicron metal, crucible is provided with in the inner chamber of vacuum evaporation room, the locular wall of the vacuum evaporation room of on the upside of crucible or side being provided with the feeding device with baiting valve can feeded in crucible and makes metal by the solid-state electron gun becoming gaseous state above, the inner chamber of vacuum evaporation room and the inner chamber of vacuum receiving chamber are by the pipeline communication with vacuum valve, the inner chamber of vacuum receiving chamber and the inner chamber of vacuum evaporation room are all connected with the pumped vacuum systems that controller controls, the pipeline that the gas outlet of vacuum receiving chamber or the inner chamber of vacuum receiving chamber are communicated with pumped vacuum systems is provided with separator, electron gun is connected with power-supply controller of electric, vacuum evaporation room and vacuum receiving chamber are provided with cooling back installation, the concrete structure being provided with cooling back installation on the inwall of described vacuum receiving chamber and in inner chamber is: the locular wall of vacuum receiving chamber is provided with discharging door closure, sandwich-type medium is by chamber and stretch into the thermocouple that vacuum receives cavity temperature in Indoor measurement vacuum receiving chamber, the sidewall of vacuum receiving chamber is provided with cooling medium inlet and cooling medium outlet, cooling medium inlet and cooling medium export has refrigerating circulatory device and control valve by pipeline communication, the one end open of the cooling pipe arranged in vacuum receiving chamber inner chamber is in cooling medium inlet, the other end is opened on cooling medium outlet, thermocouple, refrigerating circulatory device and control valve are electrically connected with controller.
Its weak point is: one be from vacuum receiving chamber receive submicron metal take out time, need shutdown to carry out, after shutdown, open the discharging door closure of vacuum receiving chamber, in vacuum receiving chamber, then take out the submicron metal of reception, inefficiency, labour intensity is large; Two be submicron metal be adsorbed on vacuum receiving chamber locular wall on and cooling back installation in vacuum receiving chamber inner chamber outer wall on, not easily take out, affect follow-up work.
Utility model content
The purpose of this utility model is to provide a kind of continuous material collecting device of submicron metal production equipment.
The purpose of this utility model is achieved in that
The continuous material collecting device of submicron metal production equipment, the locular wall of vacuum receiving chamber is provided with cooling back installation, with inner space vacuumize conduit and feed pipe, the inner cavity top of described vacuum receiving chamber or side are provided with the comb of annular or snakelike coil pipe or grill-shaped, one end of coil pipe or comb is closed, vacuum receiving chamber is drawn outer as air supply pipe after other end connected electromagnetic valve, coil pipe or comb being arranged at intervals with some perpendicular to coil pipe or comb is positioned at the cooling deposited tube of coil pipe or comb the same side, the inner space of cooling deposited tube and coil pipe or comb, the cooling diapire of deposited tube and sidewall are arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube tube wall, that the diapire of vacuum receiving chamber is provided with taper type with recovering hopper that the is inner space of vacuum receiving chamber, the diapire of recovering hopper is provided with the drainage conduit with the inner space of recovering hopper, drainage conduit is arranged at intervals with the valve that two or more controls drainage conduit break-make, or
The cooling back installation together hydronic circulating cooling pipe participated on vacuum receiving chamber locular wall is provided with in the inner chamber of described vacuum receiving chamber, circulating cooling pipe is the coil pipe of more than that annular or snakelike level are laid, the lower wall of coil pipe is arranged at intervals with the arm stretched out being communicated with coil pipe inner chamber downwards, the lower end closed of arm, each arm is set with the cooling deposited tube of lower end closed, between cooling deposited tube inwall and its arm outer wall overlapped, airspace is respectively arranged with between the upper surface of cooling deposited tube diapire and the lower surface of its arm diapire overlapped, be tightly connected between the upper end of cooling deposited tube and the arm outer wall overlapped, the upper end of cooling deposited tube is provided with and cools the air supply pipe stretched out outside vacuum receiving chamber of the chamber formed between deposited tube inwall and its arm outer wall overlapped, the sidewall of cooling deposited tube is or/and diapire is arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube tube wall, that the diapire of vacuum receiving chamber is provided with taper type with recovering hopper that the is inner space of vacuum receiving chamber, the diapire of recovering hopper is provided with the drainage conduit with the inner space of recovering hopper, drainage conduit is arranged at intervals with the valve that two or more controls drainage conduit break-make.
The above-mentioned air supply pipe stretched out outside vacuum receiving chamber is communicated with air accumulator, and air accumulator is communicated with the high pressure outlet air pipe of gas making machine; Or described in the air supply pipe stretched out outside vacuum receiving chamber be directly communicated with the high pressure outlet air pipe of gas making machine, air supply pipe is provided with magnetic valve.
The above-mentioned air supply pipe stretched out outside vacuum receiving chamber is made up of some branched pipes, one end of every root branched pipe is communicated with the upper end of plural cooling deposited tube inner chamber respectively, is all communicated with the inner chamber of air accumulator or the high pressure outlet air pipe of gas making machine after every root branched pipe arranges magnetic valve.
Store inert gas in above-mentioned air accumulator, or the gas of gas making machine manufacture is inert gas.
Airspace between above-mentioned cooling deposited tube inwall and its arm outer wall overlapped is 0.5-40mm.
Airspace between above-mentioned cooling deposited tube inwall and its arm outer wall overlapped is 0.5-25mm.
The feed pipe that the locular wall of above-mentioned vacuum receiving chamber is arranged is provided with vacuum valve, the locular wall of vacuum receiving chamber is arranged the thermocouple measuring cavity temperature in vacuum receiving chamber, the locular wall of vacuum receiving chamber is provided with door closure.
The external diameter of above-mentioned arm is 10-80mm, and the external diameter of cooling deposited tube is 13-85mm, and arm is 0.3-3mm with the wall thickness of cooling deposited tube, and described cooling deposited tube has 8-80, and the length of described cooling deposited tube is 150-3000mm.
The internal diameter of above-mentioned aperture of giving vent to anger is 0.01-0.3mm, and cooling between deposited tube and cooling deposited tube, cooling spacing distance between the inwall of deposited tube and vacuum receiving chamber is 1-500mm.
On above-mentioned each cooling deposited tube, on the inwall of vacuum receiving chamber, the cooling back installation outer wall of vacuum receiving chamber inner chamber is connected with positive and negative charge replaces charger.
The utility model gives prominence to compared to existing technology and useful technique effect is:
1, the utility model can realize the non-stop-machine submicron metal taking out reception continuously in vacuum receiving chamber, and labour intensity is little, and operating efficiency is high.
2, the utility model use inert gas purge to be adsorbed on vacuum receiving chamber locular wall on and cooling deposited tube in vacuum receiving chamber inner chamber outer wall on submicron metal, speed is fast, purge is clean, the submicron metal blown off directly falls in the recovering hopper of downside, realize continuous feeding by circulating open close valve, and then realize the continuous seepage of submicron metal production equipment; Such as close the valve 912 of downside, open the valve 911 of upside, submicron metal can fall in the drainage conduit 92 between lower valve, then, closes the valve 911 of upside, opens the valve 912 of downside, submicron metal can be discharged in drainage conduit 92, completes a discharge; Repeat above-mentioned action again, non-stop-machine continuous pulp discharge can be realized.
3, the utility model utilizes inert gas can the temperature of direct cooling vacuum receiving chamber, good cooling results.
4, the utility model is applicable to the continuous material collecting device making submicron metal production equipment.
Accompanying drawing explanation
Fig. 1 is the using state structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 1.
Fig. 3 is the schematic perspective view of the cooling back installation arranged in the inner chamber of the vacuum receiving chamber of the utility model embodiment 1.
Fig. 4 is the front view of the cooling back installation arranged in the inner chamber of the vacuum receiving chamber of the utility model embodiment 1.
Fig. 5 is that the A-A of Fig. 4 is to sectional view.
Fig. 6 is the B portion enlarged drawing of Fig. 5.
Fig. 7 is the C portion enlarged drawing of Fig. 5.
Fig. 8 is the front view of coil pipe or comb and the cooling deposited tube thereof arranged in the inner chamber of the vacuum receiving chamber of the utility model embodiment 2.
Detailed description of the invention
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
Embodiment 1, see Fig. 1-Fig. 7: the continuous material collecting device of submicron metal production equipment, the locular wall of vacuum receiving chamber 8 is provided with cooling back installation 90, with inner space vacuumize conduit 97 and feed pipe 94, the cooling back installation 80 together hydronic circulating cooling pipe participated on vacuum receiving chamber 8 locular wall is provided with in the inner chamber of described vacuum receiving chamber 8, circulating cooling pipe is the coil pipe 81 of more than that annular or snakelike level are laid, the lower wall of coil pipe 81 is arranged at intervals with the arm 85 stretched out being communicated with coil pipe 81 inner chamber downwards, the lower end closed of arm 85, each arm 85 is set with the cooling deposited tube 86 of lower end closed, between cooling deposited tube 86 inwall and its arm 85 outer wall overlapped, airspace L1 is respectively arranged with between the upper surface of cooling deposited tube 86 diapire and the lower surface of its arm 85 diapire overlapped, L2, be tightly connected between the upper end of cooling deposited tube 86 and arm 85 outer wall overlapped, the upper end of cooling deposited tube 86 is provided with and cools the air supply pipe 84 stretched out outside vacuum receiving chamber 8 of the chamber formed between deposited tube 86 inwall and its arm 85 outer wall overlapped, the sidewall of cooling deposited tube 86 is or/and diapire is arranged at intervals with the aperture 861 of giving vent to anger of through cooling deposited tube 86 tube wall, that the diapire of vacuum receiving chamber 8 is provided with taper type with recovering hopper 89 that the is inner space of vacuum receiving chamber 8, the diapire of recovering hopper 89 is provided with the drainage conduit 92 with the inner space of recovering hopper 89, drainage conduit 92 is arranged at intervals with the valve 911 that two or more controls drainage conduit 92 break-make, 912.
The above-mentioned air supply pipe 84 stretched out outside vacuum receiving chamber 8 is communicated with air accumulator 7, and air accumulator 7 is communicated with the high pressure outlet air pipe of gas making machine 5; Or described in the air supply pipe 84 stretched out outside vacuum receiving chamber 8 be directly communicated with the high pressure outlet air pipe of gas making machine 5, air supply pipe 84 is provided with magnetic valve 83, each magnetic valve 83 can control its independent switch or multiple magnetic valve 83 Simultaneous Switching by controller.
The above-mentioned air supply pipe 84 stretched out outside vacuum receiving chamber 8 is made up of some branched pipes 841, one end of every root branched pipe 841 is communicated with the upper end of plural cooling deposited tube 86 inner chamber respectively, is all communicated with the inner chamber of air accumulator 7 or the high pressure outlet air pipe of gas making machine 5 after every root branched pipe 841 being arranged magnetic valve 83.
Store inert gas in above-mentioned air accumulator 7, or the gas that gas making machine 5 manufactures is inert gas, such as nitrogen, argon gas etc.
Airspace between above-mentioned cooling deposited tube 86 inwall and its arm 85 outer wall overlapped is 0.5-40mm.
Airspace between above-mentioned cooling deposited tube 86 inwall and its arm 85 outer wall overlapped is 0.5-25mm.
The feed pipe that the locular wall of above-mentioned vacuum receiving chamber 8 is arranged is provided with vacuum valve 95, the locular wall of vacuum receiving chamber 8 is arranged the thermocouple 100 measuring cavity temperature in vacuum receiving chamber 8, the locular wall of vacuum receiving chamber 8 is provided with door closure, so that maintenance or direct from feeding in vacuum receiving chamber 8.
The external diameter of above-mentioned arm 85 is 10-80mm, and the external diameter of cooling deposited tube 86 is 13-85mm, and arm 85 is 0.3-3mm with the wall thickness of cooling deposited tube 86, and described cooling deposited tube 86 has 8-80, and the length of described cooling deposited tube 86 is 150-3000mm.
The internal diameter of above-mentioned aperture 861 of giving vent to anger is 0.01-0.3mm, and cooling between deposited tube 86 and cooling deposited tube 86, cooling spacing distance between the inwall of deposited tube 86 and vacuum receiving chamber 8 is 1-500mm.
On above-mentioned each cooling deposited tube 86, on the inwall of vacuum receiving chamber 8, circulating cooling pipe 81 outer wall is connected with positive and negative charge and replaces charger, when the inwall and circulating cooling pipe 81 outer wall of vacuum receiving chamber 8 are coupled with positive charge or negative electrical charge, the submicron metal accepted in it has also brought positive charge or negative electrical charge, when positive and negative charge replaces inwall that charger is vacuum receiving chamber 8 and circulating cooling pipe 81 outer wall adds negative electrical charge or positive charge, submicron metal with positive charge or negative electrical charge can draw two like magnetic poles repel each other and be released from the inwall of vacuum receiving chamber 8 and circulating cooling pipe 81 outer wall and fall in the recovering hopper 89 of downside by submicron metal, close the valve 912 of downside, open the valve 911 of upside, submicron metal can fall in the drainage conduit 92 between lower valve, then, close the valve 911 of upside, open the valve 912 of downside, submicron metal can be discharged in drainage conduit 92, complete a discharge, repeat above-mentioned action again, non-stop-machine continuous pulp discharge can be realized.
Embodiment 2, see Fig. 8 and Fig. 2: the present embodiment is substantially identical with the structure of embodiment 1, difference is: the continuous material collecting device of submicron metal production equipment, the locular wall of vacuum receiving chamber 8 is provided with cooling back installation 80, with inner space vacuumize conduit 97 and feed pipe 94, the inner cavity top of described vacuum receiving chamber 8 or side are provided with the comb of annular or snakelike coil pipe 81 or grill-shaped, one end of coil pipe 81 or comb is closed, vacuum receiving chamber is drawn outer as air supply pipe 84 after other end connected electromagnetic valve, coil pipe 81 or comb being arranged at intervals with some perpendicular to coil pipe or comb is positioned at the cooling deposited tube 86 of coil pipe or comb the same side, the inner space of cooling deposited tube 86 and coil pipe 81 or comb, the cooling diapire of deposited tube 86 and sidewall are arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube 86 tube wall, that the diapire of vacuum receiving chamber 8 is provided with taper type with recovering hopper 89 that the is inner space of vacuum receiving chamber, the diapire of recovering hopper 89 is provided with the drainage conduit 92 with the inner space of recovering hopper 89, drainage conduit 92 is arranged at intervals with the valve 911 that two or more controls drainage conduit break-make, 912.
Can use with the vacuum receiving chamber that vacuum receiving chamber of the present utility model is replaced in " applying electronic reaction bundle makes the device and method of submicron metal " disclosed in CN104325149A, Intelligent touch electrical apparatus control system 1 wherein in Fig. 1 of the present utility model receives temperature signal that thermocouple sends and controls (vacuum mechanical pump, lobe pump, diffusion pump) 9, vacuum mechanical pump 4, refrigerating circulatory device 93, control valve 90, turbomolecular pump 6, gas making machine 5, magnetic valve 83, valve 911, 912 grades are by the work of control, the power-supply controller of electric 2 of electron reaction bundle is for controlling electron reaction rifle 3, as for detailed operation principle and the process of submicron metal production equipment, can see Chinese patent CN104325149A " applying electronic reaction bundle make the device and method of submicron metal ", the utility model is only the improvement of the vacuum receiving chamber part to " applying electronic reaction bundle makes the device and method of submicron metal ".
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model.
Claims (10)
1. the continuous material collecting device of submicron metal production equipment, the locular wall of vacuum receiving chamber is provided with cooling back installation, with inner space vacuumize conduit and feed pipe, it is characterized in that: the inner cavity top of described vacuum receiving chamber or side are provided with the comb of annular or snakelike coil pipe or grill-shaped, one end of coil pipe or comb is closed, vacuum receiving chamber is drawn outer as air supply pipe after other end connected electromagnetic valve, coil pipe or comb being arranged at intervals with some perpendicular to coil pipe or comb is positioned at the cooling deposited tube of coil pipe or comb the same side, the inner space of cooling deposited tube and coil pipe or comb, the cooling diapire of deposited tube and sidewall are arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube tube wall, that the diapire of vacuum receiving chamber is provided with taper type with recovering hopper that the is inner space of vacuum receiving chamber, the diapire of recovering hopper is provided with the drainage conduit with the inner space of recovering hopper, drainage conduit is arranged at intervals with the valve that two or more controls drainage conduit break-make, or
The cooling back installation together hydronic circulating cooling pipe participated on vacuum receiving chamber locular wall is provided with in the inner chamber of described vacuum receiving chamber, circulating cooling pipe is the coil pipe of more than that annular or snakelike level are laid, the lower wall of coil pipe is arranged at intervals with the arm stretched out being communicated with coil pipe inner chamber downwards, the lower end closed of arm, each arm is set with the cooling deposited tube of lower end closed, between cooling deposited tube inwall and its arm outer wall overlapped, airspace is respectively arranged with between the upper surface of cooling deposited tube diapire and the lower surface of its arm diapire overlapped, be tightly connected between the upper end of cooling deposited tube and the arm outer wall overlapped, the upper end of cooling deposited tube is provided with and cools the air supply pipe stretched out outside vacuum receiving chamber of the chamber formed between deposited tube inwall and its arm outer wall overlapped, the sidewall of cooling deposited tube is or/and diapire is arranged at intervals with the aperture of giving vent to anger of through cooling deposited tube tube wall, that the diapire of vacuum receiving chamber is provided with taper type with recovering hopper that the is inner space of vacuum receiving chamber, the diapire of recovering hopper is provided with the drainage conduit with the inner space of recovering hopper, drainage conduit is arranged at intervals with the valve that two or more controls drainage conduit break-make.
2. the continuous material collecting device of submicron metal production equipment according to claim 1, is characterized in that: described in the air supply pipe stretched out outside vacuum receiving chamber be communicated with air accumulator, air accumulator is communicated with the high pressure outlet air pipe of gas making machine; Or described in the air supply pipe stretched out outside vacuum receiving chamber be directly communicated with the high pressure outlet air pipe of gas making machine, air supply pipe is provided with magnetic valve.
3. the continuous material collecting device of submicron metal production equipment according to claim 2, it is characterized in that: described in the air supply pipe stretched out outside vacuum receiving chamber be made up of some branched pipes, one end of every root branched pipe is communicated with the upper end of plural cooling deposited tube inner chamber respectively, is all communicated with the inner chamber of air accumulator or the high pressure outlet air pipe of gas making machine after every root branched pipe arranges magnetic valve.
4. the continuous material collecting device of the submicron metal production equipment according to Claims 2 or 3, is characterized in that: store inert gas in described air accumulator, or the gas of gas making machine manufacture is inert gas.
5. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, is characterized in that: the airspace between described cooling deposited tube inwall and its arm outer wall overlapped is 0.5-40mm.
6. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, is characterized in that: the airspace between described cooling deposited tube inwall and its arm outer wall overlapped is 0.5-25mm.
7. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, it is characterized in that: the feed pipe that the locular wall of described vacuum receiving chamber is arranged is provided with vacuum valve, the locular wall of vacuum receiving chamber is arranged the thermocouple measuring cavity temperature in vacuum receiving chamber, the locular wall of vacuum receiving chamber is provided with door closure.
8. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, it is characterized in that: the external diameter of described arm is 10-80mm, the external diameter of cooling deposited tube is 13-85mm, arm is 0.3-3mm with the wall thickness of cooling deposited tube, described cooling deposited tube has 8-80, and the length of described cooling deposited tube is 150-3000mm.
9. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, it is characterized in that: described in the give vent to anger internal diameter of aperture be 0.01-0.3mm, between cooling deposited tube and cooling deposited tube, between the inwall that cools deposited tube and vacuum receiving chamber, spacing distance is 1-500mm.
10. the continuous material collecting device of the submicron metal production equipment according to any one of claim 1-3, is characterized in that: on described each cooling deposited tube, on the inwall of vacuum receiving chamber, circulating cooling pipe outer wall is connected with positive and negative charge replaces charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107380.9U CN204449314U (en) | 2015-02-13 | 2015-02-13 | The continuous material collecting device of submicron metal production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520107380.9U CN204449314U (en) | 2015-02-13 | 2015-02-13 | The continuous material collecting device of submicron metal production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204449314U true CN204449314U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520107380.9U Withdrawn - After Issue CN204449314U (en) | 2015-02-13 | 2015-02-13 | The continuous material collecting device of submicron metal production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204449314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607647A (en) * | 2015-02-13 | 2015-05-13 | 江永斌 | Continuous collecting device of ultrafine metal powder production equipment |
| CN105883234A (en) * | 2016-06-28 | 2016-08-24 | 铜陵有色兴铜机电制造有限公司 | Converter hopper |
-
2015
- 2015-02-13 CN CN201520107380.9U patent/CN204449314U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607647A (en) * | 2015-02-13 | 2015-05-13 | 江永斌 | Continuous collecting device of ultrafine metal powder production equipment |
| CN105883234A (en) * | 2016-06-28 | 2016-08-24 | 铜陵有色兴铜机电制造有限公司 | Converter hopper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20170908 |