CN103352102B - Rotary vacuum degassing device - Google Patents
Rotary vacuum degassing device Download PDFInfo
- Publication number
- CN103352102B CN103352102B CN201310283957.7A CN201310283957A CN103352102B CN 103352102 B CN103352102 B CN 103352102B CN 201310283957 A CN201310283957 A CN 201310283957A CN 103352102 B CN103352102 B CN 103352102B
- Authority
- CN
- China
- Prior art keywords
- communicated
- ring
- refining
- sealing
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides a rotary vacuum degassing device which comprises a rotary machine body, wherein an axial line of the rotary machine body is inclined 15 degrees to 75 degrees relative to a horizontal plane; the rotary machine body is connected with a driving device and rotates around a shaft core of the rotary machine body under the drive of the driving device; the lower end of the rotary machine body is a lower column, the upper end of the rotary machine body is an upper column, and the middle part of the rotary machine body is a middle column; each column is formed by an integral metal shell in a surrounding way; the inner part of the rotary machine body is an integral refractory material lining formed by pouring; a molten metal discharging passage, a refining chamber and a negative pressure passage are respectively formed in the refractory material linings of the upper column, the middle column and the lower column on a shaft core line of the rotary machine body and are communicated mutually; the discharging passage at the lower end of the rotary machine body is communicated with a refining liquid area through a refining liquid conduit; the negative pressure passage at the upper end is communicated with a vacuum bleed-off passage. The rotary vacuum degassing device can overcome defects existing in conventional vacuum refining equipment outside a furnace.
Description
Technical field
The present invention relates to a kind of molten metal vacuum refining device, specifically a kind of rotatory vacuum degasifying device.
Background technology
Along with the progress and development of society, the performance requriements of people to steel is more and more higher.This just requires the external refining of steelmaking process to produce can provide molten steel that is clean, ultra-clean.Vacuum stripping refining is refinery by de-gassing means ideal at present.
In numerous vacuum refining device, RH vacuum circulating degasser, large with its treatment capacity, refining cycle is short, and refining effect is good, is subject to the generally accreditation of people; Become acknowledged, the most typical vacuum treatment device.And be applied to part Large Steel enterprise.But this device weakness inherently, limits its range of application: 1. pending liquid and the direct mixed flow of finishing metal liquid, is difficult to reach darker degassing effect.2. the washing away of device refractory lining, especially soaking tub, burn into thermal shock well damage.Cause maintenance, repair costly, and the uncertain factor that impact is produced increase.3. this method must pass to argon gas to upcast, as the circulation power of molten metal.The argon gas entering vacuum chamber considerably increases again the burden of bleeding of vacuum pump, and production cost is high.4. RH equipment mechanism is complicated, and equipment is huge, not only apparatus expensive, and requires that tall and big factory building is supporting with it, and gross investment is large.
During current external refining is produced, very outstanding to the contradiction between the high-cleanness, high requirement of molten metal and the investment working cost of refining unit and production cost.
Summary of the invention
The object of this invention is to provide a kind of rotatory vacuum degasifying device, it can solve the deficiency that the outer vacuum refining device of existing stove exists.
The present invention for achieving the above object, is achieved through the following technical solutions: comprise rotation body, and the axis rotating body is inclined relative to horizontal 15 ゜-75 ゜.Rotate body to be connected with drive unit.Rotate body under the driving of drive unit, rotate around the axle core rotating body.The lower end rotating body is lower prop, and upper end is column body, and middle part is intermediate cylinder.These three cylinders are that a bulk metal shell surrounds three the cylinder integral parts formed.Its inside be build shaping for holistic refractory lining.On the shaft core line rotating body, molten metal exhaust channel, refining chamber, negative pressure channel are set in the refractory lining of lower prop, intermediate cylinder, column body respectively.This three is interconnected, and the exhaust channel of its lower end is communicated with the refining liquid zone of liquid storage tank by refining liquid conduit; The negative pressure channel of upper end is connected with vacuum pumping channel.In lower prop refractory lining, be in the concentric column of radius apart from axle center certain distance, along the circumferential direction evenly lay 6 axial imbibition passages, the axial imbibition passage of every bar respectively by be positioned at intermediate cylinder separately independently passage communicate with refining chamber.These passages order of connection is from bottom to top: two passages are communicated with at M point
Axial imbibition passage---radial imbibition passage---spiral reservoir channel---radial reservoir channel---refining chamber.
[in lower prop] [in intermediate cylinder] [in intermediate cylinder] [in intermediate cylinder].
Angle between radial imbibition passage and radial reservoir channel is 90 ゜-180 ゜.The lower end of radial imbibition passage is positioned at the pending liquid zone of liquid storage tank, below the liquid level of molten metal.The pending liquid zone of liquid storage tank and the isolation of refining liquid zone baffle plate are formed.Baffle plate is established a circular hole, refining liquid conduit extends there through, and the two has appropriate gap, and when guaranteeing that rotating body rotates, the two does not rub, collide.The double hull external cylindrical surface of lower prop, if external application flame retardant coating.Make to isolate between double hull and liquid storage tank molten metal, be incubated.
It is an entirety that sleeve pipe is connected with the vacuum pumping channel of vacuum pump.Vacuum pumping channel is connected with vacuum air pump, is fixing part.When rotating body rotation, between column body with sleeve pipe, produce relative circumference rotary motion.The first sealing-ring and the second sealing-ring is established between column body and sleeve pipe.Cooling water cavity is formed between first sealing-ring and the second sealing-ring.Sleeve pipe between first sealing-ring and the second sealing-ring is established water coolant access tube and water coolant delivery line, water coolant access tube is all communicated with cooling water cavity with water coolant delivery line.Arrange the 3rd sealing-ring between first sealing-ring and the second sealing-ring, cooling water cavity is separated into annular intake antrum and annular water chamber by the 3rd sealing-ring; Water coolant access tube is communicated with annular intake antrum, and water coolant delivery line is communicated with annular water chamber.
Lower prop metal casing is double hull, double hull outside surface parcel external application flame retardant coating.Cooling jacket is formed between the double layer of metal shell of double hull.First dividing plate and second partition are set in cooling jacket.Cooling jacket is separated into for water jacket and backwater chuck by the first dividing plate and second partition.Limbers is all offered in first dividing plate and second partition lower end, is communicated with backwater chuck for water jacket by limbers.Be communicated with annular intake antrum by water-supply pipe for water jacket, backwater chuck is communicated with annular water chamber by return water pipe.
Whirler body drive has the gear ring being arranged on intermediate cylinder excircle, and gear ring engages with driving gear, and driving gear is connected with the output shaft of drive-motor.
The invention has the advantages that: can by the order cycle flow combinations of vacuum refinement and molten metal, molten metal constantly toppled in vacuum environment, flows, roll, drip and drench, increase the specific surface area with vacuum contact, make molten metal exposure condition under vacuo splendid, the deep purifying of molten metal can be realized.The refining process of this device does not re-use argon gas as circulation power, and therefore the burden of bleeding of vacuum pump can significantly reduce; Be conducive to reducing production cost and reducing energy consumption.This invention simplifies the complexity of equipment simultaneously, reduce equipment volume, the supporting cost of the investment of equipment and factory building is significantly reduced, the market range of application of equipment is expanded.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that in Fig. 1, A-A analyses and observe structure for amplifying schematic diagram;
Fig. 3 is B-B section structure for amplifying schematic diagram in Fig. 1;
Fig. 4 is C-C sectional structure schematic diagram in Fig. 3.
Embodiment
Rotatory vacuum degasifying device of the present invention comprises rotation body 1, rotate body 1 relative level face tilt 15 °-75 °, rotate body 1 to be connected with whirler body drive, under the driving of whirler body drive, rotate body 1 and rotate around the axle core rotating body 1.Rotate in the lower prop 2 of body 1 bottom and exhaust channel 5 and axial imbibition passage 6 are set.Negative pressure channel 7 is set in column body 3.Exhaust channel 5 is all communicated with refining chamber 4 with negative pressure channel 7.Axial imbibition passage 6 upper end is connected with radial imbibition path 10 one end, and the other end of radial imbibition path 10 is connected with spiral reservoir channel 11 at M point; Spiral reservoir channel 11 is communicated with refining chamber 4 by radial reservoir channel 12.Exhaust channel 5 and axial imbibition passage 6 lower end are all positioned at below the metal bath surface of liquid storage tank 8.Negative pressure channel 7 is communicated with vacuum pumping channel 9.The exhaust channel 5 of lower prop 2 of the present invention and the lower port of axial imbibition passage 6 are all positioned at below the metal bath surface of liquid storage tank 8.Upper port (with the Link Port of refining chamber 4) the central point height of exhaust channel 5, when design and installation, is arranged on vacuum suction device and can stablizes in the horizontal plane at molten metal vacuum suction height 40 places reached by this device.Negative pressure during use in refining chamber 4 outwards to be bled realization by vacuum pumping channel 9 by vacuum pump.Negative pressure of vacuum makes the molten metal in liquid storage tank rise to exhaust channel central position suitable for reading, and stable maintenance.Along with the rotation rotating body 1, the level height of axial imbibition passage 6, radial imbibition path 10, spiral reservoir channel 11 and radial reservoir channel 12 constantly changes.When radial imbibition path 10, spiral reservoir channel 11 and radial reservoir channel 12 go to below vacuum suction height, molten metal fills above-mentioned channel space.Along with rotating the rotation of body 1, when M point height higher than vacuum suction highly, and when being rotated further, the molten metal in this passage is divided into two sections herein, and the molten metal in axial imbibition passage 6 and radial imbibition path 10 has a small amount of backflow; And the molten metal in spiral reservoir channel 11 and radial reservoir channel 12 injects in refining chamber 4.And again go to below vacuum suction elevation plane when radial imbibition path 10, and when being rotated further, radial imbibition path 10 and spiral reservoir channel 11 and radial reservoir channel 12 are full of molten metal again; Namely rotate in body 1 rotary course, molten metal in liquid storage tank 8 in pending liquid zone 31 constantly enters refining chamber 4 by axial imbibition passage 6, radial imbibition path 10, spiral reservoir channel 11 and radial reservoir channel 12, in the vacuum environment of refining chamber 4, obtain refining.The injection of molten metal, makes the liquid level rising certain altitude in refining chamber 4, the vacuum suction height that this height can be supported higher than negative pressure of vacuum; The gravitional force of the raised area molten metal forces the molten metal in refining chamber 4 to be flowed back to refining liquid zone 32 in liquid storage tank 8 by exhaust channel 5.Along with molten metal constantly enters from refining liquid conduit 29 molten metal that refining liquid zone 32 and axial imbibition passage 6 constantly draw pending liquid zone 31, the liquid level of pending liquid zone 31 and refining liquid zone 32 is made to have had certain difference of altitude; Therefore along with the rotation rotating body 1, the molten metal in refining liquid zone 32 can continuously flow in pending liquid zone 31, realizes the order cycle flowing of molten metal.
Vacuum stripping refining can combine with circulating of molten metal by the present invention, realizes the order cycle of molten metal from the pending liquid zone of liquid storage tank → vacuum refinement room refining → pending liquid zone of liquid storage tank refining liquid zone → liquid storage tank; The inefficient cycle caused under avoiding mixed flow situation, thus improve refining speed and efficiency.
Structure specific to this device and mode of operation, molten metal can be made constantly to topple in vacuum environment, flow, roll, drip and drench, the specific surface area that molten metal is exposed in vacuum environment significantly increases, deviate to create splendid condition for institute's gas dissolved in molten metal, the deep purifying to molten metal can be realized.
In refining process, the lifting power of molten metal derives from the rotation rotating body, does not need to use the gases such as argon gas.Compared with prior art (RH device), eliminate this part cost payout; The burden of bleeding of vacuum pump is significantly reduced simultaneously, is conducive to reducing production cost and energy consumption.
Inject due to suction passage and discharge molten metal and all need certain hour, the working speed therefore rotating body is low and stable; Thus molten metal washing away and denuding damage device refractory lining can be alleviated.
Density (proportion) due to handling object molten metal determines vacuum suction height △ h during its vacuum-treat, and therefore this device is without the need to huge volume.Technological operation only needs to start drive unit just can start refining production, and therefore equipment operation is very simple; Equipment structure greatly simplifies; Significantly can reduce the cost of equipment own and the investment of supporting factory building, the market adaptability of equipment is strengthened.
(note: for molten steel, △ h is not more than 1.50 meters; And RH device volume is huge, for Chinese Baosteel, the main part height of its 1#300tRH device has exceeded 12 meters, is 12.35 meters).
The present invention, in order to ensure the self-strength rotating body 1, is provided with housing 13 at the outer wall of intermediate cylinder 38 and column body 3.Housing 13 not with molten metal contacts, therefore, the metallic substance that physical strength can be adopted high makes.
Further scheme provided by the invention is: column body 3 is placed in sleeve pipe 19, and it is an entirety that sleeve pipe 19 is connected with the vacuum pumping channel 9 of vacuum pump, arranges the first sealing-ring 20 between column body 3 outer wall and sleeve pipe 19 inwall, and the second sealing-ring 21.Cooling water cavity is formed between first sealing-ring 20 and the second sealing-ring 21.Sleeve pipe 19 between first sealing-ring 20 and the second sealing-ring 21 arranges water coolant access tube 22 and water coolant delivery line 23.Water coolant access tube 22 is all communicated with cooling water cavity with water coolant delivery line 23.The rotary seal that this structure can realize between column body 3 with vacuum suction device sleeve pipe 19 coordinates, and realizes negative pressure channel 7 and the connected sum of vacuum pumping channel 9 and the isolated sealing of atmospheric environment; Vacuum pump is bled by negative pressure channel 7, keeps the vacuum state in refining chamber 4.During the work of this device, by water coolant access tube 22 and water coolant delivery line 23, water coolant is constantly circulated in cooling water cavity, on the one hand to the first sealing-ring 20 and 21 cooling effects of the second sealing-ring, prevents sealing-ring high temperature failure; Water seal can also be formed between column body 3 periphery and sleeve pipe 19 inwall on the other hand, strengthen the stopping property between column body 3 and sleeve pipe 19, under preventing condition of negative pressure, between column body 3 and sleeve pipe 19, have air to enter.
Further scheme provided by the invention is: arrange the 3rd sealing-ring 24 between the first sealing-ring 20 and the second sealing-ring 21.Cooling water cavity is separated into annular intake antrum 25 and annular water chamber 26 by the 3rd sealing-ring 24.Water coolant access tube 22 is communicated with annular intake antrum 25; Water coolant delivery line 23 is communicated with annular water chamber 26.Lower prop 2 housing is set to double hull 14.It is an entirety that double hull 14 is connected with housing 13, and composition rotates the bulk metal shell of collective 1.Double hull 14 outside surface parcel external application flame retardant coating 37.Cooling jacket is formed between the two-layer housing of double hull 14.First dividing plate 15 and second partition 16 are set in cooling jacket.Limbers 36 is all offered in first dividing plate 15 and second partition 16 lower end, is communicated with by limbers 36 between water jacket 17 and backwater chuck 18.Be communicated with annular intake antrum 25 by water-supply pipe 27 for water jacket 17; Backwater chuck 18 is communicated with annular water chamber 26 by return water pipe 28.This structure makes the intensity of lower prop 2 effectively be promoted by double hull 14.The metallic substance that double hull 14 adopts intensity high makes.The water coolant circulated in cooling jacket between the two-layer housing of double hull 14 can be lowered the temperature to double hull 14, prevents double hull 14 from immersing temperature distortion after high-temperature liquid metal, causes device to damage.Water coolant enters annular intake antrum 25 through water coolant access tube 22, then enters annular water chamber 26 through water-supply pipe 27, confession water jacket 17, backwater chuck 18 and return water pipe 28 successively, is derived by water coolant delivery line 23.This structure makes water coolant lower the temperature to sealing-ring in realization by a set of cooling water recirculation system, while forming water seal effect, realizes the cooling effect to double hull 14 between column body 3 and sleeve pipe 19; Do not need to arrange multiple water circulation system, compact construction, equipment manufacturing cost is cheap.
The present invention enters the unequal opportunities situation of vacuum storehouse refining in order to the molten metal improving the unordered mixed flow of molten metal and cause, and can arrange refining liquid conduit 29 on the lower prop 2 of refining liquid exhaust channel 5.Refining liquid conduit 29 periphery arranges baffle plate 30.Liquid storage tank 8 is separated into pending liquid zone 31 and refining liquid zone 32 by baffle plate 30.The finishing metal liquid that exhaust channel 5 is discharged can enter pending liquid zone 31 in refining liquid zone 32 domestic demand through baffle plate 30 top and mix with pending molten metal.This structure effectively can avoid the unordered mixed flow state of liquid storage tank 8 inner metal liquid, improve finishing metal liquid that RH device downtake discharges just to have entered liquid storage tank and be just again promoted in vacuum storehouse and repeat refining, and liquid storage tank bottom metal liquid gets a promotion the unbalanced situation of chance of refining for no reason at all; Effectively can improve refining efficiency and realize deep purifying.
Whirler body drive of the present invention can adopt various structures to realize, wherein preferably interior scheme is as follows: whirler body drive has the gear ring 33 being arranged on intermediate cylinder 38 outer wall border, gear ring 33 engages with driving gear 34, and driving gear 34 is connected with the output shaft of drive-motor 35.This mechanism have take up room little, the advantage that installing/dismounting is easy to operate.Certain whirler body drive of the present invention also can adopt various structures, such as, can install sprocket wheel in intermediate cylinder 38 border, and sprocket wheel is connected with drive-motor by chain.But these structures take up room comparatively large, installation and debugging operation comparatively bothers.
The present invention is the purifying treatment amount increasing molten metal, and lift technique service efficiency, can arrange many axial imbibition passages 6 in lower prop 2.The axial imbibition passage 6 of every bar passes through independently radial imbibition path 10 respectively, and spiral reservoir channel 11 is communicated with refining chamber 4 with radial reservoir channel 12.The setting of axial imbibition passage 6 is relevant with the intensity of geometric space and refractory materials.At intensity and the purifying treatment magnitude relation of balance refractory materials, and consider that the work-ing life of refractory lining is to equipment influence on system operation and production cost factors relation, and determine through repeatedly actual tests, when the quantity of axial imbibition passage 6 is 6, the most economical, rationally.
The axle core rotating body 1 with respect to the horizontal plane between the optimized angle of angle be decided to be 45 °.The angle no matter rotating angle between body 1 and horizontal plane is greater than or less than 45 °, and the spatial arrangement of a refining unit and liquid storage tank 8 liquid level all effected, be unfavorable for the suction of implantation of device and molten metal.
Angle optimized angle between radial imbibition path 10 of the present invention and radial reservoir channel 12 is 120 °.
Claims (9)
1. rotatory vacuum degasifying device, it is characterized in that: comprise and rotate body (1), rotate body (1) axis and be inclined relative to horizontal 15 °-75 °, rotate body (1) to be connected with whirler body drive, rotate body (1) to rotate around the axle core rotating body (1) under the driving of whirler body drive, rotating body (1) axial one end is lower prop (2), rotating the axial the other end of body is column body (3), the middle part rotating body (1) is intermediate cylinder (38), this three part is that a bulk metal shell surrounds three the cylinder integral parts formed, the inside rotating body (1) is unified castable, for holistic refractory lining, on the shaft core line rotating body (1), respectively in lower prop (2), intermediate cylinder (38), molten metal exhaust channel (5) is set in the refractory lining of column body (3), refining chamber (4), negative pressure channel (7), this three is interconnected, the exhaust channel (5) of its lower end is communicated with the refining liquid zone (32) of liquid storage tank (8) by refining liquid conduit (29), the negative pressure channel (7) of upper end is communicated with vacuum pumping channel (9), lower prop (2) arranges many axial imbibition passages (6), and axial imbibition passage (6) of every bar passes through independently radial imbibition passage (10) respectively, and spiral reservoir channel (11) is communicated with refining chamber (4) with radial reservoir channel (12).
2. rotatory vacuum degasifying device according to claim 1, is characterized in that: the column body (3), the intermediate cylinder (38) that rotate body (1) establish housing (13).
3. rotatory vacuum degasifying device according to claim 1, it is characterized in that: column body (3) is placed in sleeve pipe (19), it is an entirety that sleeve pipe (19) is connected with vacuum pumping channel (9), first sealing-ring (20) and the second sealing-ring (21) are set between column body (3) outer wall and sleeve pipe (19) inwall, cooling water cavity is formed between first sealing-ring (20) and the second sealing-ring (21), sleeve pipe (19) between first sealing-ring (20) and the second sealing-ring (21) is arranged water coolant access tube (22) and water coolant delivery line (23), water coolant access tube (22) is all communicated with cooling water cavity with water coolant delivery line (23).
4. rotatory vacuum degasifying device according to claim 3, it is characterized in that: the 3rd sealing-ring (24) is set between the first sealing-ring (20) and the second sealing-ring (21), cooling water cavity is separated into annular intake antrum (25) and annular water chamber (26) by the 3rd sealing-ring (24), water coolant access tube (22) is communicated with annular intake antrum (25), water coolant delivery line (23) is communicated with annular water chamber (26), lower prop (2) housing is set to double hull (14), it is an entirety that double hull (14) is connected with housing (13), double hull (14) outside surface parcel external application flame retardant coating (37), cooling jacket is formed between the two-layer housing of double hull (14), first dividing plate (15) and second partition (16) are set in cooling jacket, cooling jacket is separated into for water jacket (17) and backwater chuck (18) by the first dividing plate (15) and second partition (16), limbers (36) is all offered in first dividing plate (15) and second partition (16) lower end, be communicated with by limbers (36) between water jacket (17) and backwater chuck (18), be communicated with annular intake antrum (25) by water-supply pipe (27) for water jacket (17), backwater chuck (18) is communicated with annular water chamber (26) by return water pipe (28).
5. rotatory vacuum degasifying device according to claim 1, it is characterized in that: the lower prop (2) of exhaust channel (5) lower end arranges refining liquid conduit (29), refining liquid conduit (29) periphery arranges baffle plate (30), and liquid storage tank (8) is separated into pending liquid zone (31) and refining liquid zone (32) by baffle plate (30).
6. rotatory vacuum degasifying device according to claim 1, it is characterized in that: whirler body drive has the gear ring (33) being arranged on the external wall border of whirler, gear ring (33) engages with driving gear (34), and driving gear (34) is connected with the output shaft of drive-motor (35).
7. rotatory vacuum degasifying device according to claim 1, it is characterized in that: arrange 6 axial imbibition passages (6) in lower prop (2), axial imbibition passage (6) of every bar is respectively by independently radial imbibition passage (10), spiral reservoir channel (11) are communicated with refining chamber (4) with radial reservoir channel (12).
8. according to rotatory vacuum degasifying device according to claim 1, it is characterized in that: the axis relative level face tilt 45 ° rotating body (1).
9. rotatory vacuum degasifying device according to claim 1, is characterized in that: the angle between radial imbibition passage (10) and radial reservoir channel (12) is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283957.7A CN103352102B (en) | 2013-07-08 | 2013-07-08 | Rotary vacuum degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310283957.7A CN103352102B (en) | 2013-07-08 | 2013-07-08 | Rotary vacuum degassing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352102A CN103352102A (en) | 2013-10-16 |
| CN103352102B true CN103352102B (en) | 2015-01-28 |
Family
ID=49308513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310283957.7A Expired - Fee Related CN103352102B (en) | 2013-07-08 | 2013-07-08 | Rotary vacuum degassing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103352102B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480257B (en) * | 2015-08-29 | 2018-05-22 | 党祎贤 | Pump valve vacuum degassing device |
| CN110966265B (en) * | 2018-09-28 | 2022-03-22 | 党祎贤 | Vacuum pump for collection and injection |
| CN109989959A (en) * | 2019-05-07 | 2019-07-09 | 中国科学院地质与地球物理研究所 | A kind of rotary steerable tool hydraulic pressure unit oiling device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599967A (en) * | 1983-11-22 | 1986-07-15 | John M. Henderson And Company Limited | Vessel nozzle cleaning apparatus and methods |
| CN2858663Y (en) * | 2005-07-27 | 2007-01-17 | 东北大学 | Improved circulating molten steel vacuum refining device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03100116A (en) * | 1989-09-14 | 1991-04-25 | Kawasaki Steel Corp | Apparatus for vacuum degassing-molten metal |
| JP2002030326A (en) * | 2000-07-12 | 2002-01-31 | Ibiden Co Ltd | Vacuum degassing apparatus |
-
2013
- 2013-07-08 CN CN201310283957.7A patent/CN103352102B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4599967A (en) * | 1983-11-22 | 1986-07-15 | John M. Henderson And Company Limited | Vessel nozzle cleaning apparatus and methods |
| CN2858663Y (en) * | 2005-07-27 | 2007-01-17 | 东北大学 | Improved circulating molten steel vacuum refining device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-030326A 2002.01.31 * |
| JP特开平3-100116A 1991.04.25 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103352102A (en) | 2013-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103352102B (en) | Rotary vacuum degassing device | |
| CN206089789U (en) | Vacuum furnace host computer, vacuum carburization stove | |
| CN103866090B (en) | RH equipment for vacuum refining telescopic soaking tub used | |
| CN203286900U (en) | Cooling structure for heating furnace cantilever roller | |
| CN104009578B (en) | Vertical asynchronous machine high thrust derivation shaft bearing structure | |
| CN102121477B (en) | Large submerged sewage pump | |
| CN101303027A (en) | Vertical type multilevel barrel bag pump | |
| CN102230292B (en) | Circulation cooling device for chute of soda recovery furnace | |
| CN106824408A (en) | A kind of radial direction water lift cooling system of ball mill | |
| CN201757066U (en) | High-temperature axial flow fan | |
| CN205638948U (en) | Nuclear power station residual heat removal pump | |
| CN203253402U (en) | Water-cooled vertical stirring rod device with water inlet and water outlet integrated on upper portion | |
| CN202117942U (en) | Shielding submerged coupling lift pump | |
| CN106929629B (en) | A kind of rotation oxygen rifle connecting component | |
| CN207989392U (en) | Vertical centrifugal pump | |
| CN202139501U (en) | Circulating cooling device of alkali recycling furnace chute | |
| CN202301065U (en) | Novel throttling ring type slurry shielding pump | |
| CN202048026U (en) | Energy-saving self-absorption vertical double-suction pump | |
| CN106549529A (en) | Direct-injection water-cooled electro spindle | |
| CN109973398A (en) | A kind of combined type condensate pump | |
| CN215719557U (en) | Efficient fast-assembling energy-saving pump | |
| CN220685195U (en) | Steel heat treatment cooling device for pipeline filter | |
| CN205446094U (en) | Can prevent that magnetic drive that corroding appears in bearing from not having leakage centrifugal fan | |
| CN215087698U (en) | Novel aluminum paste ball mill | |
| CN203047873U (en) | Installation structure of vertical submerged pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20180708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |