CN207563729U - A kind of vacuum ladle for bottom slag absorbing - Google Patents
A kind of vacuum ladle for bottom slag absorbing Download PDFInfo
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- CN207563729U CN207563729U CN201721607717.8U CN201721607717U CN207563729U CN 207563729 U CN207563729 U CN 207563729U CN 201721607717 U CN201721607717 U CN 201721607717U CN 207563729 U CN207563729 U CN 207563729U
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- cover
- casing
- slag
- magnesium alloy
- vacuum ladle
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- 239000002893 slag Substances 0.000 title claims abstract description 75
- 230000005484 gravity Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 abstract description 45
- 238000007670 refining Methods 0.000 abstract description 32
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000011109 contamination Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 22
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a kind of vacuum ladles for bottom slag absorbing, including backpack body, backpack cover, level detection processing system vacuumizes executive device, inflation executive device, dreg inhaling pipe, pivot flange, guide pad, packet bottom, further include seal pressing device, check device, the seal pressing device is made of cover, lower cover, upper ear, lower ear, check device is made of gravity check valve plug and casing, casing has conical lower portion, is provided with and the corresponding sealing cone of casing conical lower portion in the middle part of gravity check valve plug；The utility model reduces the disturbance to magnesium alloy fused mass and the repeated contamination to magnesium alloy fused mass, and removal the bottom of a pan refining slag is more thorough, effectively improves magnesium-alloy material quality, while shorten the magnesium alloy production cycle, reduces labor intensity, improves work situation.
Description
Technical field
The utility model is related to a kind of vacuum ladles, and crucible bottom is used in the process more particularly to a kind of magnesium alloy smelting
The vacuum ladle of slag absorbing.
Background technology
Magnesium and magnesium alloy chemical property are more active, in fusing and storage and transport process, are easily situated between with air, moisture, acidity
Matter etc. reacts, and immerses impurity element in reaction product and self-contained, fusion process, enters production with magnesium alloy fused mass
Product can generate very detrimental effect to performances such as corrosion resistance, the mechanical properties of magnesium-alloy material.Thus, in magnesium
And in the fusion process of magnesium alloy, the impurity such as oxide, the impurity element in melt are removed by refining treatment, for magnesium alloy
The performance improvement of product plays the role of most crucial with promotion.It is industrial usually with containing magnesium chloride, potassium chloride, sodium chloride,
The flux of the halogens ingredient such as calcirm-fluoride, barium chloride carries out magnesium alloy fused mass refining removal of impurities, and slag making, and various impurity is made to be closed from magnesium
It is detached from golden melt.The refining slag generated is refined, is typically deposited to crucible bottom.For being deposited on the refining slag of crucible bottom,
It must be removed by effective means, prevent its secondary magnesium alloy fused mass that enters from forming secondary pollution.
The method of the removal crucible bottom refining slag of industrial generally use has at present：It carries inder pot and puies forward slag method and slag scoop fishing
Slag method.
It is so-called to put forward inder pot method, it is that will carry inder pot to be put into crucible bottom, continues to be passed through into the bottom of a pan refining slag by gas blow pipe
Gas makes the bottom of a pan refining slag and the bottom of a pan magnesium liquid constantly turn over and pours into carrying inder pot, using the difference in specific gravity of refining slag and magnesium alloy fused mass,
The refining slag subsequently entered is allowed to drive the magnesium alloy fused mass carried in inder pot, also referred to as iterative replacement method out of.It is lacked existing for this method
Point includes：1）It carries inder pot to enter, leave liquid level, including air blowing process, magnesium alloy fused mass face in crucible can all be damaged, made
Magnesium alloy fused mass scaling loss is serious, and new oxide is brought to be mingled with.2）Inder pot is carried to enter, leave magnesium alloy fused mass, including blowing
Journey, to magnesium alloy fused mass in crucible and the bottom of a pan refining slag, all there are one stirring actions（Disturbance）, the slag liquid after separation is made to mix again
It closes, forms secondary pollution.3）During being somebody's turn to do, in the case where Vigorous gas stirs, slag-liquid separation speed disclosure satisfy that the technique
Requirement, it was demonstrated that this method removal be only limitted to scale it is larger, with magnesium alloy fused mass difference in specific gravity it is larger, easily with magnesium alloy fused mass point
From part refining slag, for scale it is smaller, it is smaller with magnesium alloy fused mass difference in specific gravity, difficult detached with magnesium alloy fused mass part essence
Slag is refined, does not have the effect of removing slag, which is slowly deposited to crucible bottom during standing, and is deposited in the bottom of a pan,
During the use of magnesium alloy fused mass, as magnesium alloy fused mass enters workpiece, slag inclusion is formed.
Slag scoop method is that long handle slag scoop is inserted into crucible bottom slag liquid, after dipping the bottom of a pan refining slag, then pulls out fishing slag
Spoon, is leaving in crucible after liquid level, is skimming upper strata magnesium alloy fused mass in spoon, and refining slag in spoon is then poured into slag pan or recycling earthenware
The operating process of crucible.There is also similar to the deficiency for putting forward inder pot method for this method.
The utility model patent of number of patent application CN201420232160.4《Magnesium alloy metallurgical slag transfer device》It provides
A kind of magnesium alloy metallurgical slag transfer device.The device there are the shortcomings that be：1）Similar to putting forward inder pot method, due to the device volume compared with
Greatly, it is serious to the destruction of magnesium alloy fused mass liquid level, there is stronger disturbance/agitation to magnesium alloy fused mass in crucible and refining slag.2）
The device needs to overcome very big buoyancy when entering crucible.3）Crucible top must reserve the sky for being equivalent to the device volume
Between, the spilling of magnesium alloy fused mass is prevented, crucible capacity utilization rate is low.
Utility model content
In order to overcome the deficiencies of the prior art, the utility model provides a kind of vacuum ladle for bottom slag absorbing, this reality
With it is novel can reduce slagging-off tool and the process that removes slag remove slag to the disturbance and reduction of magnesium alloy fused mass during the bottom of a pan refine
For slag to the repeated contamination of magnesium alloy fused mass, removal the bottom of a pan refining slag is more thorough, effectively improves magnesium-alloy material quality.Specific side
Case is.
A kind of vacuum ladle for bottom slag absorbing, including backpack body, backpack cover, level detection processing system vacuumizes execution
Device, inflation executive device, dreg inhaling pipe, pivot flange, guide pad, packet bottom, further include seal pressing device, check device, institute
Be provided with seal pressing device between the backpack body and backpack cover stated, the seal pressing device by cover, lower cover, upper ear,
Lower ear is formed, and the cover and lower cover are respectively arranged with corresponding seal groove, and the lower ear is provided with movable joint spiral shell
Bolt, the slag absorbing bottom of the tube are provided with check device, and the check device is made of gravity check valve plug and casing, described
Casing there is conical lower portion, the top of the gravity check valve plug is located in casing, and the middle part of gravity check valve plug is set
Have with the corresponding sealing cone of casing conical lower portion, the lower part of gravity check valve plug is backflow preventing mouth plug mandril, backflow preventing mouth plug mandril position
In the outside of casing.
The backpack body, backpack cover also reside in and are both provided with insulating layer.
It is sealed in seal groove using graphite packing or high-temperature seal ring between the cover and lower cover.
The upper ear is provided with U-type groove.
The conical lower portion that the casing has is 1 with the taper ratio of corresponding sealing cone:0.5-18.
The level detection processing system include liquid level signal collect probe, signal processing system, information display system,
Action command output system and signal transmission line.
Pivot flange is to casing shoe distance L ' less than melting kettle depth 20-60mm；It is in close in gravity check valve plug
During envelope state, guide pad to backflow preventing mouth plug mandril bottom end distance L is more than crucible depth 10-50mm.
The utility model has the advantages that compared with prior art.
1）The destruction to magnesium alloy fused mass sealer is effectively reduced, magnesium alloy fused mass is reduced and draws because of surface exposure
The scaling loss risen.
2）The bottom of a pan refines during reduction slagging-off tool and the process that removes slag remove slag to the disturbance and reduction of magnesium alloy fused mass
For slag to the repeated contamination of magnesium alloy fused mass, removal the bottom of a pan refining slag is more thorough, improves magnesium-alloy material quality.
3）After the completion of removing the bottom of a pan refining slag operation, the converter process of falling liquid can be directly entered, does not need to secondary standing, is contracted
The short magnesium alloy production cycle.
4）Mechanization degree is high, and labor intensity reduces, and operation is safer.
5）Refining slag is reduced in air kind exposure duration and exposed area, advantageously reduce air pollution and improves worker's labor
Rotating ring border.
Description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.It should be pointed out that for those skilled in the art, the utility model principle is not being departed from
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Fig. 1 is schematic diagram of the utility model for the vacuum ladle of bottom slag absorbing.
Fig. 2 is seal pressing device schematic diagram.
Fig. 3 is check device schematic diagram.
Fig. 4 is for bottom slag absorbing vacuum ladle slag absorbing course of work schematic diagram.
Fig. 5 is for bottom slag absorbing vacuum ladle deslagging course of work schematic diagram.
In figure, 1 is backpack body, and 2 be backpack cover, and 3 be seal pressing device, and 4 be level detection processing system, and 5 hold to vacuumize
Luggage is put, and 6 be inflation executive device, and 7 be dreg inhaling pipe, and 8 be check device, and 9 be refining slag, and 10 be magnesium alloy fused mass, and 11 be magnesium
Alloy melt surface, 12 be melting kettle, and 14 be recycling crucible, and 15 be pivot flange, and 16 be guide pad, and 17 be packet bottom, and 31 are
Cover, 32 be lower cover, and 33 be upper ear, and 34 be lower ear, and 35 be eyelet bolt, and 81 be gravity check valve plug, and 82 be casing,
811 be sealing cone, and 812 be backflow preventing mouth plug mandril.
Specific embodiment
The technical solution of the utility model is described in detail with reference to the accompanying drawings and examples, but protection domain is not limited by this
System.
As shown in Figs. 1-3, a kind of vacuum ladle for bottom slag absorbing, including backpack body 1, backpack cover 2, level detection processing system
System 4 vacuumizes executive device 5, inflation executive device 6, dreg inhaling pipe 7, pivot flange 15, guide pad 16, packet bottom 17, further includes close
Pressing device 3, check device 8 are sealed, backpack body 1 and backpack cover 2 are both provided with insulating layer, and sealing pressure is provided between backpack body 1 and backpack cover 2
Tight device 3, seal pressing device 3 are made of cover 31, lower cover 32, upper ear 33, lower ear 34, cover 31 and lower cover 32
Corresponding seal groove is respectively arranged with, is sealed between seal groove using graphite packing or high-temperature seal ring, makes its tool
Have the advantages that good seal performance, sealing element are not easy to fall, disclosure satisfy that high-temperature service.
Lower ear 34 is provided with the eyelet bolt 35 of compression, and upper ear 33 is provided with U-type groove for compression slip-knot bolt 35
Into and nut compress, have the advantages that convenient for disassembly and assembly, part is not easy to lose；7 bottom of dreg inhaling pipe is provided with check device 8, only
Return device 8 is made of gravity check valve plug 81 and casing 82, and casing 82 has conical lower portion, the upper bit of gravity check valve plug 81
In in casing 82, the middle part of gravity check valve plug 81 is provided with and the corresponding sealing cone 811 of 82 conical lower portion of casing, casing
82 conical lower portions having are 1 with the taper ratio of corresponding sealing cone 811:0.5-18；The lower part of gravity check valve plug 81 is
Backflow preventing mouth plug mandril 812, backflow preventing mouth plug mandril 812 are located at the outside of casing 82.The effect of check device 8 is to work as dreg inhaling pipe 7 from melting
Prevent refining slag 13 from flowing back when being proposed in crucible 12.
Level detection processing system 4 includes liquid level signal and collects probe, signal processing system, information display system, action
Order output system and signal transmission line.
Executive device 5 is vacuumized to be to provide negative pressure to vacuum ladle for extracting 12 bottom the bottom of a pan refining slag of melting kettle out
9, compressed air injector may be used in vacuum acquirement（Jet vacuum pump）Itself generates vacuum, can also use extraneous vacuum system
System obtains vacuum；When obtaining vacuum mode using extraneous vacuum system, vacuumizing executive device 5, inflation executive device 6 can be with
Set of device is merged into, simplifies vacuum ladle structure.
As shown in figure 4, the vacuum ladle for bottom slag absorbing is in the use process of slag absorbing operation.
1）By the magnesium alloy fused mass of refinery process, after standing and realizing slag-liquid separation, the vacuum by preheating is lifted
Packet is slowly placed on melting kettle 12, meanwhile, the bottom end of dreg inhaling pipe 7 passes through the magnesium in melting kettle 12 together with check device 8
Alloy melt 10 and the bottom of a pan refining slag 9, during this, check device 8 closes shape since the gravity of backflow preventing mouth plug is in sealing
State, when the bottom of check device 8 enters 12 bottom of melting kettle, when encountering the bottom of a pan, due to the gravity of entire vacuum ladle
Effect and the supporting role of 12 bottom of melting kettle, backflow preventing mouth plug mandril 812 jack up, check device 8 are opened.
2）Inflation executive device 6 is kept to be in off state, opening vacuumizes executive device 5, makes to be formed in vacuum ladle negative
Pressure, vacuum ladle is sucked by the refining slag 9 in melting kettle 12.
3）After refining slag 9 reaches setting liquid level in vacuum ladle, the liquid level signal of connection level detection processing system 4 is received
Collect probe, and pass through signal transmission line and be conveyed to signal processing system, signal processing system handles information, sends out letter
Breath shows signal and vacuumizes and ceases and desist order.
4）It vacuumizes executive device 5 and receives to vacuumize and cease and desist order, cut off vacuum pipe, stop vacuumizing.
5）The information display system buzzer of level detection processing system 4 starts to alarm, while warning lamp is bright.
6）Operating personnel find buzzer and warning lamp alarm after, close pumped vacuum systems, while with drive a vehicle etc. haulagman
Tool slings vacuum ladle.At this point, due to gravity, the gravity check valve plug 81 of check device 8, which falls, to be sealed, and realization prevents true
Sky is two-mand ladle the reflux of interior refining slag.
7）Slag absorbing operation is completed, and magnesium alloy fused mass 10 enters subsequent processing in melting kettle 12, carries out converter or casting is made
Industry.
As shown in figure 5, the vacuum ladle for bottom slag absorbing is in the use process of slagging operation.
1）The vacuum ladle that slag absorbing is completed is transported to recycling crucible 14 using means of transports such as driving, fork trucks.
2）The gravity check valve plug 81 of check device 8 is again at opening state at this time, in vacuum ladle refining slag due to
Gravity starts to flow back into recycling crucible 14, realizes slagging operation.
3）For interior refining slag discharge efficiency of accelerating to two-man ladle, can operate as follows：Holding vacuumizes executive device 5 and is in pass
Closed state installs compressed air pipe to inflation executive device 6 and is filled with compressed air, its inner cavity made to form positive pressure, by vacuum
Refining slag in two-maing ladle, which extrudes, enters recycling crucible 14.
4）When refining slag 9 starts effervescent, it was demonstrated that refining slag has discharged completion in vacuum ladle, closes inflation and performs dress
6 are put, stops inflation, slagging operation terminates.
5）Discharge refining slag terminates, and is prepared to enter into next " slag absorbing --- slagging " working cycles.
What more than operating procedure was equally applicable to other liquids such as magnesium and magnesium alloy liquid pressure, electrolytic aluminium liquid turns liquid.
The above content is the further descriptions done with reference to specific preferred embodiment to the utility model, it is impossible to
Assert that specific embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field
For, under the premise of the utility model is not departed from, several simple deduction or replace can also be made, should be all considered as belonging to
The utility model determines scope of patent protection by the claims submitted.
Claims (6)
1. a kind of vacuum ladle for bottom slag absorbing, including backpack body（1）, backpack cover（2）, level detection processing system（4）, take out it is true
Empty executive device（5）, inflation executive device（6）, dreg inhaling pipe（7）, pivot flange（15）, guide pad（16）, packet bottom（17）, it is special
Sign is, further includes seal pressing device（3）, check device（8）, the backpack body（1）With backpack cover（2）Between be provided with sealing
Pressing device（3）, the seal pressing device（3）By cover（31）, lower cover（32）, upper ear（33）, lower ear（34）Structure
Into the cover（31）With lower cover（32）It is respectively arranged with corresponding seal groove, the lower ear（34）It is provided with
Eyelet bolt（35）, the dreg inhaling pipe（7）Bottom is provided with check device（8）, the check device（8）By gravity non-return
Valve plug（81）And casing（82）It forms, the casing（82）With conical lower portion, the gravity check valve plug（81）It is upper
Portion is located at casing（82）It is interior, gravity check valve plug（81）Middle part be provided with and casing（82）The corresponding sealed taper of conical lower portion
Face（811）, gravity check valve plug（81）Lower part be backflow preventing mouth plug mandril（812）, backflow preventing mouth plug mandril（812）Positioned at casing（82）'s
It is external.
A kind of 2. vacuum ladle for bottom slag absorbing according to claim 1, which is characterized in that the backpack body（1）、
Backpack cover（2）It is both provided with insulating layer.
A kind of 3. vacuum ladle for bottom slag absorbing according to claim 1, which is characterized in that the cover
（31）With lower cover（32）Between seal groove in be sealed using graphite packing or high-temperature seal ring.
A kind of 4. vacuum ladle for bottom slag absorbing according to claim 1, which is characterized in that the upper ear（33）
It is provided with U-type groove.
A kind of 5. vacuum ladle for bottom slag absorbing according to claim 1, which is characterized in that the casing（82）
The conical lower portion having and corresponding sealing cone（811）Taper ratio be 1:0.5-18.
A kind of 6. vacuum ladle for bottom slag absorbing according to claim 1, which is characterized in that the level detection
Processing system（4）Including liquid level signal collect probe, signal processing system, information display system, action command output system and
Signal transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721607717.8U CN207563729U (en) | 2017-11-27 | 2017-11-27 | A kind of vacuum ladle for bottom slag absorbing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721607717.8U CN207563729U (en) | 2017-11-27 | 2017-11-27 | A kind of vacuum ladle for bottom slag absorbing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207563729U true CN207563729U (en) | 2018-07-03 |
Family
ID=62692260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721607717.8U Active CN207563729U (en) | 2017-11-27 | 2017-11-27 | A kind of vacuum ladle for bottom slag absorbing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207563729U (en) |
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2017
- 2017-11-27 CN CN201721607717.8U patent/CN207563729U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A vacuum ladle for bottom slag suction Effective date of registration: 20231020 Granted publication date: 20180703 Pledgee: Wenxi County Branch of China Postal Savings Bank Co.,Ltd. Pledgor: SHANXI BADA MAGNESIUM Co.,Ltd. Registration number: Y2023140000061 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |