CN117651618A - Immersion type mechanical control liquid level casting furnace and double-station replacement valve - Google Patents
Immersion type mechanical control liquid level casting furnace and double-station replacement valve Download PDFInfo
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- CN117651618A CN117651618A CN202380010550.9A CN202380010550A CN117651618A CN 117651618 A CN117651618 A CN 117651618A CN 202380010550 A CN202380010550 A CN 202380010550A CN 117651618 A CN117651618 A CN 117651618A
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- molten metal
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- liquid level
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- 239000007788 liquid Substances 0.000 title claims abstract description 143
- 238000005266 casting Methods 0.000 title claims abstract description 53
- 238000007654 immersion Methods 0.000 title claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 313
- 239000002184 metal Substances 0.000 claims abstract description 313
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 250
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 244
- 238000002425 crystallisation Methods 0.000 claims abstract description 69
- 230000008025 crystallization Effects 0.000 claims abstract description 69
- 238000003723 Smelting Methods 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims description 115
- 238000007789 sealing Methods 0.000 claims description 78
- 239000012535 impurity Substances 0.000 claims description 59
- 230000000712 assembly Effects 0.000 claims description 43
- 238000000429 assembly Methods 0.000 claims description 43
- 238000007667 floating Methods 0.000 claims description 40
- 238000013519 translation Methods 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 36
- 238000001816 cooling Methods 0.000 claims description 23
- 238000001556 precipitation Methods 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 14
- 238000009749 continuous casting Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 3
- 239000000463 material Substances 0.000 claims 2
- 238000004321 preservation Methods 0.000 abstract description 71
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 25
- 230000008569 process Effects 0.000 description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 19
- 229910052802 copper Inorganic materials 0.000 description 19
- 239000010949 copper Substances 0.000 description 19
- 239000002994 raw material Substances 0.000 description 16
- 238000005058 metal casting Methods 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000013589 supplement Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
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- 239000000741 silica gel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
Abstract
The utility model provides an immersion type mechanical control liquid level casting furnace, the casting furnace includes smelting furnace (100), heat preservation stove (200) and crystallization device (300), crystallization device (300) are including holding chamber (301) that are arranged in holding molten metal, heat preservation stove (200) respectively with smelting furnace (100) and hold chamber (301) intercommunication, be equipped with haulage head (400) on crystallization device (300), hold chamber (301) and heat preservation stove (200) remain the intercommunication, heat preservation stove (200) have liftable immersion device (500), immersion device (500) are immersed in order to the liquid level in lifting holding chamber (301), crystallization device (300) have liquid level detection device (600). The double-position replacement valve includes a seal assembly having a carbon rod (800) and a traveling carbon rod assembly. The immersion device (500) adjusts the lifting height according to the detection signal of the liquid level detection device (600) to keep the liquid level in the containing cavity (301) at a preset height, so that the problem of low casting blank production efficiency is solved.
Description
[ field of technology ]
The invention relates to the technical field of continuous casting, in particular to an immersion type mechanical control liquid level casting furnace and a double-station replacement valve.
[ background Art ]
At present, patent document with the publication number 112743057A discloses a horizontal continuous casting furnace group for a workshop copper bar blank, a tractor pulls the copper bar blank to a set certain length, a sawing machine automatically saw the copper bar blank, and the saw-cut copper bar blank is conveyed and discharged through a quick ingot blank conveying mechanism and a discharging roller way, so that a travelling crane is not required to be used for lifting and then sawing. According to the heat preservation furnace in the horizontal continuous casting furnace group of the red copper rod blank, due to the fact that the crystallization devices are horizontally arranged in parallel, the bottoms of the heat preservation furnace and the crystallization devices are communicated with each other, the liquid levels of the heat preservation furnace and the crystallization devices are kept consistent, the traction heads for drawing out the copper blank are arranged on the crystallization devices, when the liquid level of the copper liquid in the crystallization devices falls to the vicinity of the traction heads, the copper blank in a normal shape cannot be drawn out, the copper liquid needs to be supplemented into the heat preservation furnace to lift the liquid level in the crystallization devices, but more copper liquid still exists in the heat preservation furnace and cannot be utilized at the moment, and the copper liquid is frequently supplemented and production efficiency is reduced. And the molten copper in the melting furnace is transferred into the heat preservation furnace in a gap way, and the casting of the heat preservation furnace is continuous, so that the fluctuation of the molten copper in the heat preservation furnace is large, and the quality stability of the produced casting blank is directly influenced.
[ invention ]
The invention aims to solve the technical problems of low casting blank production efficiency and large casting blank quality fluctuation by providing an immersion type mechanical control liquid level casting furnace which overcomes the defects of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an immersion type mechanical control liquid level casting furnace, includes smelting furnace, holding furnace and crystallization device, crystallization device is including the appearance chamber that is used for holding molten metal, holding furnace respectively with smelting furnace and appearance chamber intercommunication, be equipped with the drawing head on the crystallization device, hold the chamber with holding furnace keeps the intercommunication, the holding furnace has the immersion device of liftable, the immersion device is immersed in molten metal in order to the liquid level in the lifting appearance chamber, crystallization device has liquid level detection device, the immersion device is according to liquid level detection device's detected signal adjustment elevation height makes the liquid level in the appearance chamber keep at predetermineeing the height.
On the basis of the scheme, the dipping device comprises a dipping body and a lifting rod connected to the dipping body, and a driver for driving the lifting rod to move up and down relative to the heat preservation furnace is arranged on the heat preservation furnace.
On the basis of the scheme, the inside of the immersed body is hollow.
On the basis of the scheme, the crystallization device further comprises a furnace body and a cooling sleeve arranged on the furnace body, the containing cavity is formed by the furnace body, and the traction head pulls out molten metal from the cooling sleeve to enable the molten metal to be cooled into a metal casting blank by the cooling sleeve.
On the basis of the scheme, the lower end of the heat preservation furnace is communicated with the lower end of the crystallization device, and the bottom wall of the heat preservation furnace is lower than the bottom wall of the containing cavity.
On the basis of the scheme, the bottom wall of the heat preservation furnace gradually rises towards the crystallization device, the bottom wall of the containing cavity gradually decreases towards the heat preservation furnace, the heat preservation furnace is communicated with the crystallization device through a fluid channel, and one end of the fluid channel, which is connected with the heat preservation furnace, gradually rises towards one end, which is connected with the crystallization device.
On the basis of the scheme, the upper end of the heat preservation furnace is provided with a molten metal inlet communicated with the smelting furnace, the bottom wall of the smelting furnace is provided with a molten metal outlet communicated with the molten metal inlet, and the bottom wall of the smelting furnace at the side part of the molten metal outlet is downwards sunken to form an impurity precipitation zone.
On the basis of the scheme, a first baffle is arranged on one side, close to the molten metal inlet, of the heat preservation furnace, a gap for molten metal to flow is formed between the first baffle and the bottom wall of the heat preservation furnace, and one end, far away from the gap, of the bottom of the heat preservation furnace is communicated with the containing cavity.
On the basis of the scheme, a second baffle is arranged on one side, far away from the molten metal outlet, of the smelting furnace, a raw material inlet is formed between the second baffle and the end part of the smelting furnace in a surrounding mode, and the impurity precipitation area is located outside the projection range of the raw material inlet in the vertical direction.
On the basis of the scheme, the immersed mechanical control liquid level casting furnace further comprises a double-station replacement valve, the double-station replacement valve comprises a mounting frame and two mutually-complementary sealing assemblies arranged on the mounting frame, each sealing assembly comprises a carbon rod and a movable carbon rod assembly, and the movable carbon rod assembly is used for translating and lifting the carbon rod so as to plug or open a molten metal outlet through the carbon rod.
On the basis of the scheme, a third baffle is arranged on the bottom wall of the heat preservation furnace, which is close to one side of the crystallization device, and one side of the third baffle, which faces the crystallization device, is a diversion surface which deflects towards the crystallization device from top to bottom.
On the basis of the scheme, the third baffle is lower than the casting center of the traction head, and a plurality of through holes are formed in the third baffle at intervals along the height direction.
On the basis of the scheme, a plurality of the impregnators are arranged, and the plurality of impregnators are sequentially lowered into molten metal in the continuous casting process.
On the basis of the scheme, the liquid level detection device comprises a floating ball, a floating rod connected to the floating ball and a sensor for detecting the displacement of the floating rod to judge the liquid level, wherein the crystallization device is provided with a positioning mechanism, the positioning mechanism comprises at least two roller sets arranged at intervals along the vertical direction, and each roller set comprises roller wheels which are arranged on two sides of the floating rod in pairs and roll along with the floating of the floating rod.
The double-station replacement valve comprises a mounting frame and two mutually-complementary sealing assemblies arranged on the mounting frame, wherein each sealing assembly comprises a carbon rod and a movable carbon rod assembly, and the movable carbon rod assembly is used for translating and lifting the carbon rod so as to block or open a molten metal channel between two molten metal furnaces.
On the basis of the scheme, the movable carbon rod assembly comprises a lifting mechanism with a carbon rod clamping device and a translation mechanism for driving the lifting mechanism to move in a translation mode, a molten metal control station is arranged on the mounting frame, a sealing assembly located at the molten metal control station drives the carbon rod to lift through the lifting mechanism so as to block or open a molten metal channel between two molten metal furnaces, the two sealing assemblies are symmetrically arranged, after the carbon rod of one sealing assembly is worn, the molten metal control station is withdrawn through cooperation of the lifting mechanism and the translation mechanism, and the other sealing assembly is moved to the molten metal control station through cooperation of the lifting mechanism and the translation mechanism.
On the basis of the scheme, the two sealing assemblies are arranged on the same side of the mounting frame, the sealing assemblies further comprise sliding plates and sliding rails, the sliding plates are slidably mounted on the sliding rails, the lifting mechanism is arranged on the sliding plates, and the translation mechanism is arranged on the mounting frame and used for driving the sliding plates to slide along the sliding rails.
On the basis of the scheme, the double-station replacement valve further comprises a carbon rod automatic replacement mechanism, wherein the carbon rod automatic replacement mechanism comprises a shell, a storage cavity arranged in the shell, and a discharge hole arranged on the shell and communicated with the storage cavity, and the carbon rod is stored in the storage cavity and can fall down through the discharge hole to be clamped by the carbon rod clamping device.
On the basis of the scheme, the carbon rod clamping device is a clamping jaw which is hydraulically controlled or pneumatically controlled, the clamping jaw loosens the carbon rod when leaving the molten metal control station to enable the carbon rod to fall into the smelting furnace or the heat preservation furnace, and the clamping jaw moves to the lower portion of the discharge hole through the cooperation of the lifting mechanism and the translation mechanism so as to clamp the carbon rod.
On the basis of the scheme, the carbon rod comprises a carbon rod body and a large-diameter section arranged at the upper end of the carbon rod body, the discharge port comprises a first discharge port and a second discharge port, the size of the first discharge port is smaller than that of the large-diameter section, the size of the second discharge port is larger than that of the large-diameter section, the carbon rod is abutted to the large-diameter section on a shell around the first discharge port when falling through the first discharge port, a through groove communicated with each other is formed between the first discharge port and the second discharge port, and the carbon rod clamping device can drive the carbon rod to move to the second discharge port after clamping the carbon rod so as to be separated from the shell.
On the basis of the scheme, the carbon rod further comprises a small-diameter section with the size larger than that of the carbon rod body, the small-diameter section is arranged below the large-diameter section, a clamping section for clamping the carbon rod clamping device is formed between the small-diameter section and the large-diameter section, and the size of the small-diameter section is smaller than that of the first discharge hole.
On the basis of the scheme, the mounting frame comprises a fixed mounting frame and a rotating mounting frame which is rotatably mounted on the fixed mounting frame, two sealing assemblies are respectively arranged on two sides of the rotating mounting frame, the two sealing assemblies are opposite to the rotating axis of the rotating mounting frame and are in central symmetry, the shell is fixedly connected with the fixed mounting frame, a driving motor which is used for driving the rotating mounting frame to rotate is arranged at the bottom of the shell, and the rotating mounting frame drives the sealing assemblies to rotate so that the carbon rod moves from the first discharge port to the second discharge port.
On the basis of the scheme, the limiting plate and the driving mechanism for driving the limiting plate to slide are slidably arranged below the first discharge hole.
On the basis of the scheme, the elastic pressing plate used for pushing the carbon rod to move towards the direction of the discharge hole is arranged in the storage cavity, one end, close to the discharge hole, of the storage cavity is gradually tapered towards the direction of the discharge hole, and the bottom wall, close to one end of the discharge hole, of the storage cavity is gradually inclined downwards.
The invention has the beneficial effects that:
the invention discloses a casting furnace, which comprises a smelting furnace, a heat preservation furnace and a crystallization device, wherein the smelting furnace is used for smelting raw materials, so that the metal raw materials become metal liquid and the metal liquid is processed to be in accordance with the production standard of casting blanks, the heat preservation furnace is used for storing the processed metal liquid and providing the metal liquid into a containing cavity of the crystallization device, and the crystallization device is connected with a traction head which is used for pulling the metal liquid out of the crystallization device to form a tube blank or a bar. When the metal liquid level in the holding cavity is lowered to the lower part of the center of the traction head, casting blanks cannot be continuously produced, the heat preservation furnace is provided with a lifting impregnator, the impregnator can be lifted to be immersed into the metal liquid in the heat preservation furnace, so that the metal liquid level in the heat preservation furnace is lifted, and the heat preservation furnace is communicated with the holding cavity. And when the casting furnace is scrapped, the molten metal remained in the furnace can be reduced, and the economic loss is reduced.
The metal liquid level in the containing cavity can be always kept at the preset height by controlling the immersion depth of the immersion device into the metal liquid, and the metal liquid at the traction head has larger pressure when the liquid level of the metal liquid is higher, so that the crystal phase tissue density of a casting blank can be improved under the action of the large pressure, the quality of the casting blank is improved, and the casting environment of the casting blank is kept unchanged due to the fact that the metal liquid level in the containing cavity can be always kept at the same height, and therefore the whole batch of casting blanks can be ensured to have higher and stable quality. According to Bernoulli principle, the larger the pressure is, the larger the influence on the flow velocity of the fluid is, so that the higher pressure is maintained, the flow of the metal liquid at the bottom layer can be smooth, and the metal liquid at the bottom layer containing a large amount of impurities is not easy to flow upwards to influence the quality of a casting blank.
The crystallization device is also internally provided with a liquid level detection device, the liquid level detection device can detect the liquid level of the metal liquid in the containing cavity, and the liquid level of the metal liquid in the containing cavity can be judged by analyzing the detection signal of the liquid level detection device, so that the position of the immersion device can be timely adjusted to adjust the liquid level of the metal liquid in the containing cavity.
Further, the immersing device comprises an immersing body and a lifting rod connected to the immersing body, and a driver for driving the lifting rod to move up and down relative to the heat preservation furnace is arranged on the heat preservation furnace. The driver can drive the lifting rod to drive the immersed body to do lifting motion, adjust the depth of the immersed body immersed into the molten metal, and then actively control the liquid level of the molten metal in the cavity.
Further, the inside of the immersion body is hollow. The immersion body is provided in a hollow structure in the interior to reduce the weight of the immersion body and thus the load of the drive.
Furthermore, the crystallization device further comprises a furnace body and a cooling sleeve arranged on the furnace body, the containing cavity is formed by the furnace body, and the drawing head draws out molten metal from the cooling sleeve to cool the molten metal into a metal casting blank by the cooling sleeve. After the molten metal in the holding furnace enters the cavity, the molten metal can be pulled out of the furnace body by the pulling head, and in the process, the molten metal can pass through the cooling sleeve to be cooled and formed by the cooling sleeve, so that a metal casting blank is formed.
Further, the lower end of the heat preservation furnace is communicated with the lower end of the crystallization device, and the bottom wall of the heat preservation furnace is lower than the bottom wall of the containing cavity. Molten metal in the holding furnace enters the lower end of the crystallization device from the lower end of the holding furnace so as to supplement the molten metal in the containing cavity. The bottom wall of the heat preservation furnace is lower than the bottom wall of the containing cavity, so that impurities sinking in the bottom layer of the molten metal in the heat preservation furnace are not easy to enter the crystallization device, and the components of the casting blank are ensured to meet the standard.
Further, the bottom wall of the heat preservation furnace gradually rises towards the crystallization device, the bottom wall of the containing cavity gradually decreases towards the heat preservation furnace, the heat preservation furnace is communicated with the crystallization device through a fluid channel, and one end of the fluid channel, which is connected with the heat preservation furnace, gradually rises towards one end, which is connected with the crystallization device. According to the technical scheme, the blocking of molten metal in the process of flowing from the heat preservation furnace to the crystallization device can be reduced, so that a large amount of impurities are prevented from entering the crystallization device along with the molten metal due to severe fluctuation of the molten metal, the impurities in the heat preservation furnace are not easy to enter the fluid channel, the impurities in the fluid channel are not easy to enter the crystallization device, and the impurities in the crystallization device are not easy to be cast into a casting blank along with upward flowing of the molten metal, so that the quality of the casting blank is improved.
Further, the upper end of the heat preservation furnace is provided with a molten metal inlet communicated with the smelting furnace, the bottom wall of the smelting furnace is provided with a molten metal outlet communicated with the molten metal inlet, and the bottom wall of the smelting furnace at the side part of the molten metal outlet is downwards sunken to form an impurity precipitation zone. Molten metal in the smelting furnace leaves the smelting furnace through a molten metal outlet and enters the holding furnace through a molten metal inlet. Impurities with the density smaller than that of the molten metal can float to the surface of the molten metal in the smelting process, impurities with the density larger than that of the molten metal can sink to the bottom layer, the sunken impurity precipitation zone is arranged to enable the impurities to sink to the position, and the impurity content in the molten metal around the molten metal outlet is reduced, so that the content of the impurities in the heat preservation furnace is reduced, and the molten metal outlet is higher than the impurity precipitation zone, so that the molten metal containing a large amount of impurities in the impurity precipitation zone is not easy to enter the heat preservation furnace in the process of feeding the molten metal into the heat preservation furnace.
Further, a first baffle is arranged on one side of the heat preservation furnace, which is close to the molten metal inlet, a gap for molten metal to flow is formed between the first baffle and the bottom wall of the heat preservation furnace, and one end, away from the gap, of the bottom of the heat preservation furnace is communicated with the containing cavity. The first baffle can block molten metal entering the holding furnace from the smelting furnace so as to buffer the molten metal, and impurities at the bottom layer are prevented from diffusing in the molten metal along with the fluctuation of the molten metal due to the severe fluctuation of the molten metal in the holding furnace. After the molten metal is blocked by the first baffle, the molten metal flows out of the gap and is mixed with the molten metal at other parts in the holding furnace, and the pressure at the gap is higher because the gap is close to the bottom wall of the holding furnace, so that the molten metal can smoothly flow to reduce the fluctuation of the molten metal.
Further, a second baffle is arranged on one side, far away from the molten metal outlet, of the smelting furnace, a raw material inlet is formed between the second baffle and the end part of the smelting furnace in a surrounding mode, and the impurity precipitation area is located outside the projection range of the raw material inlet in the vertical direction. The second baffle can buffer the fluctuating molten metal in the process of throwing the raw materials into the smelting furnace so as to reduce the influence of the molten metal in the impurity precipitation zone, reduce the fluctuation of the molten metal at the position and reduce the upward diffused impurities. Since the raw material inlet is not directly opposite to the impurity precipitation zone, the input raw material does not directly sink into the impurity precipitation zone to cause impurity diffusion.
Further, the immersion type mechanical control liquid level casting furnace further comprises a double-station replacement valve, the double-station replacement valve comprises a mounting frame and two mutually-complementary sealing assemblies arranged on the mounting frame, each sealing assembly comprises a carbon rod and a movable carbon rod assembly, and the movable carbon rod assembly is used for translating and lifting the carbon rod so as to plug or open a molten metal outlet through the carbon rod. The sealing component can seal the metal liquid outlet through the carbon rod, so that the metal liquid is stored in the smelting furnace, and after the metal liquid in the smelting furnace is treated and kept stand, the sealing component opens the metal liquid outlet so that the metal liquid can be discharged into the heat preservation furnace through the metal liquid outlet. The seal assembly is equipped with two, and two seal assemblies are the replacement each other, and after the carbon-point loss on one of them seal assembly, another seal assembly can be replaced to through the carbon-point shutoff metal liquid export again, change the carbon-point of loss this moment, so the design can need not to wait for the time that the carbon-point replaced, can shorten the carbon-point replacement in-process, metal liquid export exhaust metal liquid's volume.
Further, a third baffle is arranged on the bottom wall of the heat preservation furnace, which is close to one side of the crystallization device, and one side of the third baffle, which faces the crystallization device, is a diversion surface which deflects towards the crystallization device from top to bottom. Under the blocking effect of the third baffle, when the metal liquid is supplied to the heat preservation furnace from the smelting furnace, the metal liquid level is higher than the third baffle, the metal liquid can cross the third baffle to be supplied to the containing cavity, the third baffle has the blocking effect on impurities positioned at the bottom layer of the heat preservation furnace, and a large amount of impurities are prevented from entering the containing cavity due to the flowing of the metal liquid at the bottom layer in the metal liquid supplying process in the heat preservation furnace. The guide surface has the functions of guiding and buffering molten metal, and avoids the phenomenon that the molten metal on the bottom layer in the cavity fluctuates severely to cause a large amount of impurities on the bottom layer to diffuse upwards.
Further, the third baffle is lower than the casting center of the traction head, and a plurality of through holes are formed in the third baffle at intervals along the height direction. The third baffle is lower than the casting center of the traction head, so that the third baffle can not influence the control of the liquid level of the molten metal in the cavity in the continuous casting process. The through holes can enable the molten metal in the holding furnace to pass through the third baffle plate and enter the holding cavity so as to facilitate the molten metal to flow in the holding cavity and in front of the holding furnace. When the traction head needs to be replaced, after the liquid level of the molten metal in the containing cavity is lower than the casting center of the traction head, the immersing device is lifted, so that the molten metal in the containing cavity can pass through the third baffle plate and flow back to the heat preservation furnace. Because the metal liquid flow of the through hole is limited, even if the through hole is arranged, the impurity amount entering the cavity through the through hole in the heat preservation furnace is limited, and the influence on the quality of the metal casting blank is small.
Further, a plurality of the impregnators are arranged, and the plurality of the impregnators are sequentially lowered into molten metal in the continuous casting process. Compared with a heat preservation furnace, the volume of the containing cavity is smaller, and the plurality of the infusers are arranged, so that when the liquid level in the containing cavity is controlled, only one of the infusers is controlled to lift, and the accuracy of controlling the liquid level of the metal liquid in the containing cavity can be improved.
Further, the liquid level detection device comprises a floating ball, a floating rod connected to the floating ball and a sensor for detecting the displacement of the floating rod to judge the liquid level, wherein a positioning mechanism is arranged on the crystallization device and comprises at least two roller groups arranged at intervals along the vertical direction, and each roller group comprises roller wheels which are arranged on two sides of the floating rod in pairs and roll along with the floating of the floating rod. The floating ball can float and sink along with the fluctuation of the metal liquid level in the containing cavity, so that the position change of the floating rod is driven, and the sensor can judge the height of the metal liquid level in the containing cavity according to the position change of the floating rod. The roller group is arranged to enable the floating rod to move along the vertical direction, so that the influence on the judgment of the liquid level in the cavity caused by the deflection of the floating rod is avoided.
The invention also discloses a double-station replacement valve which is used for controlling the flow of the metal liquid between two metal liquid furnaces, the double-station replacement valve comprises two sealing assemblies, the two sealing assemblies are replaced with each other, when a carbon rod on one sealing assembly is lost, the other sealing assembly can be replaced so as to re-plug a metal liquid channel through the carbon rod, and the lost carbon rod is replaced at the moment.
Further, remove the carbon-point subassembly including the elevating system and the drive that have carbon-point clamping device elevating system translational motion's translation mechanism, have the molten metal control station on the mounting bracket, be located the sealing component of molten metal control station drives the carbon-point through elevating system and goes up and down in order to shutoff or open the molten metal passageway between two molten metal furnaces, two sealing component symmetry sets up, and after the carbon-point loss of one of them sealing component, through elevating system with translation mechanism's cooperation withdraws from the molten metal control station, another sealing component passes through elevating system with translation mechanism's cooperation is removed to the molten metal control station. The carbon rod clamping device is used for clamping a carbon rod, the lifting mechanism can control the carbon rod clamping device to lift, so that the carbon rod is controlled to lift to block or open a molten metal channel, and the translation mechanism can control the lifting mechanism to do translation motion, so that the carbon rod translates to leave or enter a molten metal control station. When the carbon rod on one of the sealing assemblies is lost, the carbon rod clamping device is lifted upwards through the lifting mechanism of the sealing assembly, then the lifting mechanism is driven by the translation mechanism to translate, so that the lifting mechanism is led to exit the molten metal control station, the complete carbon rod is reinstalled, the lifting mechanism is driven by the translation mechanism of the other sealing assembly to translate, so that the lifting mechanism enters the molten metal control station, and then the lifting mechanism controls the carbon rod clamping device to descend, so that the carbon rod can block the molten metal channel again.
Further, two sealing components are arranged on the same side of the mounting frame, the sealing components further comprise sliding plates and sliding rails, the sliding plates are slidably mounted on the sliding rails, the lifting mechanism is arranged on the sliding plates, and the translation mechanism is arranged on the mounting frame and used for driving the sliding plates to slide along the sliding rails. The lifting mechanism is arranged on the sliding plate and can synchronously act along with the sliding plate, and the translation mechanism can drive the sliding plate to slide along the sliding rail so that the lifting mechanism leaves or enters the molten metal control station. The two sealing assemblies are arranged on the same side of the mounting frame, and the sealing assemblies positioned at the molten metal control station can be switched only by the action of the translation mechanism.
Further, the double-station replacement valve further comprises a carbon rod automatic replacement mechanism, wherein the carbon rod automatic replacement mechanism comprises a shell, a storage cavity arranged in the shell, and a discharge hole arranged on the shell and communicated with the storage cavity, and the carbon rod is stored in the storage cavity and can fall down through the discharge hole to be clamped by the carbon rod clamping device. The automatic carbon rod replacing mechanism can automatically replace the carbon rods on the sealing assembly leaving the molten metal control station, so that manual operation is not needed, and the safety coefficient in the operation process is improved. The carbon rod waiting to replace is stored in the storage cavity, when the carbon rod is installed on the carbon rod clamping device, the carbon rod can fall from the discharge hole, and the carbon rod clamping device can clamp the carbon rod falling from the discharge hole.
Further, the carbon rod clamping device is a clamping jaw which is hydraulically controlled or pneumatically controlled, the clamping jaw loosens the carbon rod when leaving the molten metal control station to enable the carbon rod to fall into the smelting furnace or the heat preservation furnace, and the clamping jaw moves to the lower portion of the discharge hole through cooperation of the lifting mechanism and the translation mechanism to clamp the carbon rod. The clamping jaw can automatically loosen or clamp the carbon rod through hydraulic control or pneumatic control, so that the carbon rod does not need to be manually disassembled and assembled. When the carbon rod is lost, the clamping jaw can loosen the carbon rod to enable the carbon rod to fall into molten metal, the lost carbon rod does not need to be collected, and the arrangement of an automatic collection device of the lost carbon rod can be reduced.
Further, the carbon-point includes the carbon-point body and locates the big footpath section of carbon-point body upper end, the discharge gate includes first discharge gate and second discharge gate, the size of first discharge gate is less than big footpath section's size, the size of second discharge gate is greater than big footpath section's size, the carbon-point is through when first discharge gate whereabouts big footpath section butt in on the casing around the first discharge gate, first discharge gate with be equipped with between the second discharge gate with each other the logical groove of intercommunication, carbon-point clamping device can drive the carbon-point after the centre gripping carbon-point and remove to the second discharge gate and separate with the casing. In the carbon rod installation process, the carbon rod falls from the first discharge hole first, and after the carbon rod falls a certain distance, the large-diameter section can be propped against the shell around the first discharge hole and is kept at the first discharge hole, so that the carbon rod is prevented from falling from the carbon rod automatic replacement mechanism. After the carbon rod on the sealing component at the molten metal control station is lost, the sealing component for completing the installation of the carbon rod can move to the molten metal control station, and the carbon rod clamping device can move relative to the shell along the through groove in the process, so that the carbon rod can move to the second discharge port along the through groove.
Further, the carbon rod further comprises a small-diameter section with the size larger than that of the carbon rod body, the small-diameter section is arranged below the large-diameter section, a clamping section for clamping the carbon rod clamping device is formed between the small-diameter section and the large-diameter section, and the size of the small-diameter section is smaller than that of the first discharge hole. The minor diameter section can be smoothly through first discharge gate and can not be blocked to make the grip section can stretch out the casing and be held by carbon-point clamping device, when carbon-point shutoff molten metal passageway, can receive ascending reaction force on the carbon-point, through the cooperation between minor diameter section and the carbon-point clamping device, can avoid carbon-point and carbon-point clamping device to appear axial relative displacement, prevent the condition that the molten metal passageway appears leaking.
Further, the mounting bracket includes fixed mounting bracket and rotates and install rotate the mounting bracket on the fixed mounting bracket, two seal assembly locates respectively rotate the both sides of mounting bracket, two seal assembly is relative rotate the axis central symmetry of mounting bracket, the casing with fixed mounting bracket fixed connection, the casing bottom is equipped with and is used for the drive rotate mounting bracket pivoted driving motor, rotate the mounting bracket drive seal assembly rotates so that the carbon-point certainly first discharge gate removes to the second discharge gate. The driving motor can drive the rotary mounting frame to rotate relative to the fixed mounting frame so as to adjust the relative positions of the two sealing assemblies, so that the two sealing assemblies can acquire new carbon rods from the same first discharge hole, and only one storage cavity can be arranged in the shell. When the rotary mounting frame rotates, the carbon rod clamping device drives the carbon rods to synchronously act, so that the carbon rods can move from the first discharge hole to the second discharge hole.
Further, a limiting plate and a driving mechanism for driving the limiting plate to slide are slidably arranged below the first discharging hole. The limiting plate can prevent the carbon rod from falling, the carbon rod is prevented from extending out of the shell to block the movement of the carbon rod clamping device when the carbon rod clamping device does not move to the lower side of the first discharging hole, the driving mechanism can control the limiting plate to move so as to relieve the blocking effect on the carbon rod, and the driving mechanism can also reset the limiting plate after the carbon rod clamping device drives the carbon rod to move so as to restore the blocking effect on the carbon rod positioned in the storage cavity.
Further, the elastic pressing plate used for pushing the carbon rod to move towards the direction of the discharge port is arranged in the storage cavity, one end, close to the discharge port, of the storage cavity is gradually tapered towards the direction of the discharge port, and the bottom wall, close to one end of the discharge port, of the storage cavity is gradually inclined downwards. The elastic pressing plate can automatically push the carbon rods to move towards the direction of the discharge hole, so that the carbon rods can automatically and continuously drop from the discharge hole, the end position of the storage cavity is set to be tapered, the number of carbon rods passing through simultaneously can be limited, the discharge hole is prevented from being blocked by two carbon rods, and the bottom wall of the area can not be inclined due to the small end position of the storage cavity, so that the carbon rods can automatically slide towards the direction of the discharge hole under the condition of not receiving thrust.
These features and advantages of the present invention will be disclosed in detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a smelting furnace and a holding furnace according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the heat-insulating furnace and the crystallization device according to the embodiment of the invention;
FIG. 3 is a schematic view showing the structure of a holding furnace and a crystallization apparatus when an impregnator is immersed in the holding furnace according to an embodiment of the present invention;
FIG. 4 is a top view of a casting furnace in an embodiment of the invention;
FIG. 5 is a schematic view showing the structure of a holding furnace with a third baffle in an embodiment of the present invention;
FIG. 6 is a schematic diagram of a smelting furnace and a double-station substitution valve in an embodiment of the invention;
FIG. 7 is a cross-sectional view of an automatic carbon rod replacement mechanism in accordance with an embodiment of the present invention;
FIG. 8 is a side view of an automatic carbon rod replacement mechanism in accordance with an embodiment of the present invention;
FIG. 9 is a cross-sectional view of another automatic carbon rod replacement mechanism in accordance with an embodiment of the present invention;
FIG. 10 is a bottom view of an automatic carbon rod replacement mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic illustration of the configuration of a melting furnace and another double-station substitution valve in an embodiment of the present invention.
Reference numerals:
Smelting furnace 100, molten metal outlet 110, impurity precipitation zone 120, second baffle 130, raw material inlet 140;
the heat preservation furnace 200, a molten metal inlet 210, a first baffle 220, a gap 230, a third baffle 240, a diversion surface 250 and a through hole 260;
the crystallization device 300, the accommodating cavity 301, the furnace body 302 and the cooling jacket 310;
a traction head 400;
an infuser 500, an infuser body 510, a lifting rod 520, and a driver 530;
a liquid level detection device 600, a floating ball 610, a floating rod 620, and a roller set 630;
a fluid channel 700;
carbon rod 800, carbon rod body 810, large diameter section 820, small diameter section 830, clamping section 840, elastic pressing plate 850, pressing plate body 851, spring 852, limiting plate 860 and connecting post 870;
mounting bracket 900, slide rail 901, slide 902, fixed mounting bracket 903, rotation mounting bracket 904, driving motor 905, carbon rod clamping device 910, elevating mechanism 911, translation mechanism 912, housing 920, storage cavity 921, first discharge port 922, second discharge port 923, through slot 924, and cushion 925.
[ detailed description ] of the invention
The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
The appearances of the phrases such as "exemplary," "some embodiments," and the like in the following text are meant to be "serving as examples, embodiments, or illustrative," and any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, it will be appreciated by those skilled in the art that the present disclosure may be practiced without some of these specific details.
Referring to fig. 1 to 5, an embodiment of the present invention discloses an immersion type mechanical control liquid level casting furnace, which comprises a smelting furnace 100, a holding furnace 200 and a crystallization device 300, wherein the crystallization device 300 comprises a cavity 301 for holding molten metal, the holding furnace 200 is respectively communicated with the smelting furnace 100 and the cavity 301, the cavity 301 is communicated with the holding furnace 200, a drawing head 400 is arranged on the crystallization device 300, the smelting furnace 100 is used for melting raw materials, making the molten metal become molten metal and processing the molten metal into components which meet the production standard of casting blanks, the holding furnace 200 is used for storing the processed molten metal and providing the molten metal to the cavity 301, the crystallization device 300 is connected with the drawing head 400, and the drawing head 400 is used for drawing the molten metal from the crystallization device 300 to make the molten metal become tube blanks or bars.
When the metal liquid level in the holding cavity 301 falls below the center of the drawing head 400, casting blanks cannot be continuously produced, the heat preservation furnace 200 is provided with a liftable impregnator 500, the impregnator 500 can do lifting motion to be immersed in the metal liquid in the heat preservation furnace 200, so that the metal liquid level in the heat preservation furnace 200 is lifted, and the heat preservation furnace 200 and the holding cavity 301 are in a communicated state, so that after the metal liquid level in the heat preservation furnace 200 is lifted, the metal liquid level in the holding cavity 301 can also be lifted, the utilization rate of the metal liquid in the heat preservation furnace 200 can be improved, the supplement times of the metal liquid are reduced, and the production efficiency can be improved. And when the casting furnace is scrapped, the molten metal remained in the furnace can be reduced, and the economic loss is reduced.
When need change the pull head 400, among the prior art, need make the molten metal liquid level be less than whole pull head through the mode of empting crystallization device, just can ensure that the molten metal can not flow when the pull head is changed, and in the scheme of this application, only need control the immersion ware 500 to dip into the molten metal, pull out the back with most molten metal, the lifting immersion ware 500 again, just can make the molten metal level in the holding chamber 301 drop to the pull head 400 below to the replacement of pull head 400 is convenient for.
The crystallization device 300 further comprises a furnace body 302 and a cooling sleeve 310 arranged on the furnace body 302, the containing cavity 301 is formed by the furnace body 302, the cooling sleeve 310 is communicated with the containing cavity 301, the drawing head 400 is positioned in the cooling sleeve 310, the drawing head 400 comprises a die and a drawing rod, the die is arranged in the cooling sleeve 310, the drawing rod can move relative to the die, the drawing rod can seal the communicated area between the cooling sleeve 310 and the furnace body 302, in the production process, when the drawing rod moves, molten metal can gradually flow out to enter between the die and the cooling sleeve 310 and is cooled and molded by the cooling sleeve 310, in the molten metal cooling process, the drawing rod is connected with the front end of a metal casting blank to draw the metal casting blank, then the front end of the metal casting blank can be cut off to take down the drawing rod, and finally the metal casting blank is drawn by the drawing device arranged behind the crystallization device, so that the molten metal can be continuously cooled into the metal casting blank.
The cooling jacket 310 has a cooling passage therein through which a cooling liquid or a cooling gas passes to exchange heat with the molten metal, thereby cooling the molten metal into a cast metal slab. The die of the drawing head 400 is used for limiting the shape, type and size of the metal casting blank, and the shape, type and size of the produced metal casting blank can be adjusted after the die is replaced.
The crystallization device 300 further comprises a liquid level detection device 600 for detecting the liquid level of the metal liquid in the containing cavity 301, the liquid level of the metal liquid in the containing cavity 301 can be judged by analyzing the detection signal of the liquid level detection device 600, so that the liquid level of the metal liquid in the containing cavity 301 can be adjusted by timely adjusting the position of the immersion device 500, the liquid level in the containing cavity 301 is kept at a preset height, and because the metal has a larger density, when the liquid level of the metal liquid is higher, the metal liquid at the traction head 400 has a larger pressure, the crystal phase tissue density of a casting blank can be improved under the action of the larger pressure, thereby improving the quality of the casting blank, and because the metal liquid level in the containing cavity 301 can be always kept at the same height, the casting environment of the casting blank can be kept unchanged, thereby ensuring that the whole batch of casting blanks has higher and stable quality. According to Bernoulli principle, the larger the pressure is, the larger the influence on the flow velocity of the fluid is, so that the higher pressure is maintained, the flow of the metal liquid at the bottom layer can be smooth, and the metal liquid at the bottom layer containing a large amount of impurities is not easy to flow upwards to influence the quality of a casting blank.
In the production process, after the dip device 500 descends to the lowest position, the liquid level of the molten metal in the holding cavity 301 is gradually reduced, and the molten metal can be replenished into the holding furnace 200 through the smelting furnace 100, in the molten metal replenishing process, the dip device 500 is gradually reset upwards instead of rising the dip device 500 and replenishing the molten metal, so that the phenomenon that the molten metal in the holding furnace 200 is fluctuated severely due to the impact of the replenished molten metal caused by the too low liquid level in the holding furnace 200 in the molten metal replenishing process can be avoided, and impurities sinking in the bottom layer are upwards diffused. In this process, the rising speed of the dipping machine 500 is controlled according to the detection signal of the liquid level detection device 600 to maintain the liquid level of the molten metal in the accommodating chamber 301.
Referring to fig. 2 and 3, in an embodiment of the present invention, the lower end of the holding furnace 200 is communicated with the lower end of the furnace body 302 through the fluid channel 700, and the molten metal in the holding furnace 200 enters the lower end of the furnace body 302 from the lower end thereof to supplement the molten metal in the cavity 301, so that in order to ensure the quality of the molten metal in the cavity 301, the bottom wall of the holding furnace 200 is lower than the bottom wall of the cavity 301, and impurities sinking into the bottom layer of the molten metal are not easy to enter the cavity 301, so as to ensure that the composition of the casting blank meets the standard.
The bottom wall of the holding furnace 200 gradually rises towards the furnace body 302, so that impurities in the holding furnace 200 are not easy to enter the fluid channel 700, one end of the fluid channel 700 connected with the holding furnace 200 gradually rises towards the end connected with the furnace body 302, impurities in the fluid channel 700 are not easy to enter the furnace body 302, the bottom wall of the containing cavity 301 gradually decreases towards the holding furnace 200, and impurities in the containing cavity 301 are not easy to be cast into a casting blank along with upward flowing of molten metal, so that the quality of the casting blank is improved. The bottom wall of the heat preservation furnace 200 and the bottom wall of the containing cavity 301 are both of inclined structures, and through the combined action of the three embodiments, the blocking of molten metal in the process of flowing from the heat preservation furnace 200 to the furnace body 302 can be reduced, so that a large amount of impurities along with the molten metal enter the furnace body 302 due to severe fluctuation of the molten metal can be avoided.
The upper end of the holding furnace 200 is provided with a molten metal inlet 210 communicated with the smelting furnace 100, the bottom wall of the smelting furnace 100 is provided with a molten metal outlet 110 communicated with the molten metal inlet 210, molten metal in the smelting furnace 100 leaves the smelting furnace 100 through the molten metal outlet 110, and enters the holding furnace 200 through the molten metal inlet 210. The heat preservation furnace is connected with the smelting furnace through a drainage joint, the metal liquid inlet and the metal liquid outlet are respectively arranged at two ends of the drainage joint, and a metal liquid channel for flowing metal liquid is further arranged in the drainage joint.
The side of the holding furnace 200, which is close to the molten metal inlet 210, is provided with a first baffle plate 220, a gap 230 for molten metal to flow is formed between the first baffle plate 220 and the bottom wall of the holding furnace 200, and one end, far away from the gap 230, of the bottom of the holding furnace 200 is communicated with a furnace body 302. The first baffle 220 can block molten metal entering the holding furnace 200 from the smelting furnace 100 so as to buffer the molten metal, and prevent impurities at the bottom layer from diffusing in the molten metal along with the fluctuation of the molten metal caused by the severe fluctuation of the molten metal in the holding furnace 200. After passing through the first baffle 220, the molten metal flows out of the gap 230 to be mixed with the molten metal at the rest of the interior of the holding furnace 200, and the pressure of the gap 230 is high because the gap is close to the bottom wall of the holding furnace 200, so that the molten metal can smoothly flow to reduce the fluctuation of the molten metal.
Referring to fig. 6, in one embodiment of the present invention, the submerged mechanically controlled level casting furnace further comprises a double-position substitution valve comprising a mounting frame 900 and two mutually complementary sealing assemblies provided on the mounting frame 900, the sealing assemblies comprising a carbon rod 800 and a moving carbon rod assembly for translating and lifting the carbon rod 800 to block or unblock the molten metal outlet 110 by the carbon rod 800, in accordance with the above-described embodiments. The sealing component can seal the molten metal outlet 110 through a carbon rod, so that the molten metal is stored in the smelting furnace 100, and after the molten metal in the smelting furnace 100 is treated and kept stand, the sealing component opens the molten metal outlet 110 again, so that the molten metal can be discharged into the heat preservation furnace 200 through the molten metal outlet 110. The seal assembly is provided with two seal assemblies which are replaced by each other, when one of the seal assemblies is worn, the other seal assembly can be replaced to plug the metal liquid outlet 110 again through the carbon rod 800, and the worn carbon rod 800 is replaced at the moment.
In the present application, the molten metal is copper, the carbon rod 800 is a graphite rod, and the graphite rod is a waste product, and besides being capable of plugging the molten metal outlet 110, the graphite rod can also perform oxidation-reduction reaction with copper oxide in the copper liquid to separate oxygen from the copper liquid in the form of carbon monoxide, so that the oxygen content in a casting blank is reduced. The graphite rod is a consumable product, and can be rapidly disassembled, assembled and replaced in a clamping, screw connection mode and the like.
Referring to fig. 1, in one embodiment of the present invention, the bottom wall of the smelting furnace 100 at the side of the molten metal outlet 110 is downwardly recessed to form an impurity precipitation zone 120 based on the above-described embodiment. In the melting furnace 100, impurities having a density less than that of the molten metal may float up to the surface of the molten metal, impurities having a density greater than that of the molten metal may sink down to the bottom layer, the content of the remaining unnecessary components dissolved in the molten metal may be reduced by treating the molten metal, for example, adding an oxidizing agent, a metal compound, or the like, the provision of the recessed impurity precipitation zone 120 may reduce the amount of impurities contained in the molten metal, which is insoluble in the molten metal and has a density greater than that of the molten metal, around the molten metal outlet 110, thereby reducing the content of impurities in the holding furnace 200, and since the molten metal outlet 110 is higher than the impurity precipitation zone 120, the molten metal having a large amount of impurities in the impurity precipitation zone 120 is not easily introduced into the holding furnace 200 during the feeding of the molten metal into the holding furnace 200.
A second baffle 130 is arranged on one side of the smelting furnace 100 far away from the molten metal outlet 110, a raw material inlet 140 is formed between the second baffle 130 and the end part of the smelting furnace 100 in a surrounding mode, and the impurity precipitation zone 120 is located outside the projection range of the raw material inlet 140 in the vertical direction. The second baffle 130 is capable of buffering fluctuating molten metal during the charging of raw materials into the smelting furnace 100 to reduce the impact of molten metal located in the impurity precipitation zone 120, reducing fluctuations in molten metal therein and reducing upwardly-diffused impurities. Since the raw material inlet 140 is not directly opposite to the impurity precipitation zone 120, the inputted raw material does not directly sink into the impurity precipitation zone 120 to cause diffusion of impurities.
Referring to fig. 1 to 3, in accordance with the above embodiment, in one embodiment of the present invention, an infuser 500 includes an infuser body 510 and a lifting rod 520 connected to the infuser body 510, and a driver 530 for driving the lifting rod 520 to move up and down with respect to the holding furnace 200 is provided to the holding furnace 200.
Preferably, the hollow interior of the immersion body 510 is configured to reduce the weight while ensuring the volume, thereby reducing the load of the actuator 530 and also reducing the cost of the immersion body 510.
In addition, compared with the holding furnace 200, the volume of the cavity 301 is smaller, a plurality of the infusors 500 are arranged for improving the accuracy of liquid level control, the plurality of infusors 500 are sequentially lowered into molten metal in the continuous casting process, and only one of the infusors 500 is controlled to be lifted when the liquid level in the cavity 301 is controlled by arranging the plurality of infusors 500, so that the accuracy of liquid level control of the cavity 301 can be improved.
The actuator 530 may be one of a motor, a hydraulic cylinder, and an electric cylinder.
Referring to fig. 2, in an embodiment of the present invention based on the above embodiment, the liquid level detecting device 600 includes a floating ball 610, a floating rod 620 connected to the floating ball 610, and a sensor for detecting displacement of the floating rod 620 to determine the liquid level, and the crystallization device 300 is provided with a positioning mechanism including at least two roller sets 630 spaced apart in a vertical direction, each roller set 900 including rollers disposed at both sides of the floating rod 620 in pairs and rolling with the floating of the floating rod 620. The floating ball 610 floats and sinks along with the fluctuation of the metal liquid level in the containing cavity 301, so as to drive the position change of the floating rod 620, and the sensor can judge the height of the metal liquid level in the containing cavity 301 according to the position change of the floating rod 620. The roller group 900 can enable the floating rod 620 to move along the vertical direction, so that the phenomenon that the liquid level in the accommodating cavity 301 is judged due to the fact that the floating rod 620 is inclined is avoided.
Referring to fig. 5, in an embodiment of the present invention, a bottom wall of the holding furnace 200 near the furnace body 302 is provided with a third baffle 240, and a side of the third baffle 240 facing the furnace body 302 is a diversion surface 250 that is inclined toward the furnace body 302 from top to bottom. Under the blocking effect of the third baffle 240, when the smelting furnace 100 supplements molten metal into the holding furnace 200, the molten metal level is higher than the third baffle 240, and then the molten metal can pass through the third baffle 240 to supplement into the accommodating cavity 301, and the third baffle 240 has the blocking effect on impurities positioned at the bottom layer of the holding furnace 200, so that a large amount of impurities are prevented from entering the accommodating cavity 301 due to the flow of the molten metal at the bottom layer in the molten metal supplementing process in the holding furnace 200. The guiding surface 250 has guiding and buffering functions on molten metal, and avoids the phenomenon that impurities on the bottom layer are greatly diffused upwards due to severe fluctuation of the molten metal on the bottom layer in the accommodating cavity 301. The guide surface 250 is a slope inclined toward the furnace body 302, and the lower end thereof is closer to the furnace body 302 so that the metal liquid can be guided toward the furnace body 302 and buffered. In addition, the diversion surface can also be provided as an arc surface.
In the normal continuous casting process, after the liquid level of the molten metal in the cavity 301 is lower than the casting center of the drawing head 400, the molten metal needs to be timely replenished into the holding furnace 200 to raise the liquid level of the molten metal in the cavity 301, and in order not to affect the control of the liquid level of the molten metal in the cavity 301 in the continuous casting process, the third baffle 240 is set lower than the casting center of the drawing head 400.
The third baffle 240 is further provided with a plurality of through holes 260 arranged at intervals along the height direction, and the through holes 260 can enable the molten metal in the holding furnace 200 to pass through the third baffle 240 and enter the accommodating cavity 301, so that the molten metal between the furnace body 302 and the holding furnace 200 can flow conveniently. When the drawing head 400 needs to be replaced, after the liquid level of the molten metal in the containing cavity 301 is lower than the casting center of the drawing head 400, the soaking device is lifted so that the molten metal in the containing cavity 301 can flow back to the holding furnace 200 through the third baffle 240. Since the flow rate of the molten metal in the through-hole 260 is limited, the amount of impurities entering the cavity 301 through the through-hole 260 in the holding furnace 200 is limited even if the through-hole 260 is provided, and the influence on the quality of the metal cast blank is small.
Referring to fig. 6 to 11, the present invention also discloses a double-station replacement valve, which comprises a mounting frame 900 and two mutually complementary sealing assemblies arranged on the mounting frame 900, wherein the sealing assemblies comprise a carbon rod 800 and a movable carbon rod assembly, and the movable carbon rod assembly is used for translating and lifting the carbon rod 800 so as to block or open a molten metal channel between two molten metal furnaces through the carbon rod 800.
Specifically, the sealing assembly includes a lifting mechanism 911 with a carbon rod clamping device 910 and a translation mechanism 912 for driving the lifting mechanism 911 to move in a translation manner, a molten metal control station is provided on the mounting frame 900 corresponding to the molten metal channel (as shown in fig. 6, the sealing assembly on the left side in fig. 6 is located at the molten metal control station), the sealing assembly on the molten metal control station drives the carbon rod 800 to lift through the lifting mechanism 911 to block or open the molten metal channel, the two sealing assemblies are symmetrically arranged, after the carbon rod 800 of one sealing assembly is worn, the molten metal control station is withdrawn through the cooperation of the lifting mechanism 911 and the translation mechanism 912, and the other sealing assembly is moved to the molten metal control station through the cooperation of the lifting mechanism 911 and the translation mechanism 912.
The double-station replacement valve comprises two sealing assemblies, wherein the two sealing assemblies are provided with a lifting mechanism 911, a translation mechanism 912 and a carbon rod clamping device 910, the carbon rod clamping device 910 is used for clamping a carbon rod 800, the lifting mechanism 911 can control the carbon rod clamping device 910 to lift so as to control the carbon rod 800 to lift to block or open a molten metal channel, and the translation mechanism 912 can control the lifting mechanism 911 to do translation motion so as to enable the carbon rod 800 to translate to leave or enter a molten metal control station. The two sealing components are replaced with each other, when the carbon rod 800 on one sealing component is worn, the carbon rod clamping device 910 is lifted upwards through the lifting mechanism 911 of the sealing component, then the lifting mechanism 911 is driven to translate through the translation mechanism 912 to enable the lifting mechanism 911 to exit the molten metal control station so as to reinstall the complete carbon rod 800, and after the translation mechanism 912 of the other sealing component drives the lifting mechanism 911 to translate so that the lifting mechanism 911 enters the molten metal control station, the lifting mechanism 911 controls the carbon rod clamping device 910 to descend so as to enable the carbon rod 800 to re-plug the molten metal channel.
Referring to fig. 6, in one embodiment of the present invention, two sealing assemblies are provided on the same side of the mounting frame 900, the sealing assemblies further comprise a slide plate 902 and a slide rail 901, the slide plate 902 is slidably mounted on the slide rail 901, the lifting mechanism 911 is provided on the slide plate 902, and the translation mechanism 912 is provided on the mounting frame 900 for driving the slide plate 902 to slide along the slide rail 901. Lifting mechanism 911 is mounted on slide 902 to move in unison with slide 902 and translation mechanism 912 can drive slide 902 along slide rail 901 to move lifting mechanism 911 away from or into the molten metal control station.
When the lifting mechanism 911 leaves the molten metal control station, the carbon rod 800 can be manually disassembled.
The power of the translation mechanism 912 and the lifting mechanism 911 can be provided by an air cylinder or a motor.
As shown in fig. 11, the present application discloses a lifting mechanism, which comprises a motor and a screw, wherein a bevel gear is adopted between the motor and the screw for rotation, the screw is in threaded fit with a translation mechanism 912, and when the screw rotates, the translation mechanism 912 can move along the screw.
Referring to fig. 7 to 11, in an embodiment of the present invention, the double-acting replacement valve further includes an automatic carbon rod replacement mechanism including a housing 920, a storage chamber 921 provided in the housing 920, and a discharge port provided on the housing 920 and communicating with the storage chamber 921, wherein the carbon rod 800 is stored in the storage chamber 921 and can be held by the carbon rod holding device 910 by falling through the discharge port. The automatic carbon rod replacing mechanism can automatically replace the carbon rods 800 on the sealing assembly leaving the molten metal control station, so that manual operation is not needed, and the safety coefficient in the operation process is improved. The carbon rod 800 waiting for replacement is stored in the storage cavity 921, and when the carbon rod 800 is mounted on the carbon rod clamping device 910, the carbon rod 800 can fall from the discharge hole, and the carbon rod clamping device 910 can clamp the carbon rod 800 falling from the discharge hole.
In the application, the metal liquid is copper liquid, the carbon rod 800 is a graphite rod, and the graphite rod is a loss product, so that a metal liquid channel can be plugged, oxidation-reduction reaction can be carried out with copper oxide in the copper liquid, oxygen can be separated from the copper liquid in a carbon monoxide mode, and the oxygen content in a casting blank is reduced.
The carbon rod clamping device 910 is a hydraulic or pneumatic clamping jaw, and when the clamping jaw leaves the molten metal control station, the clamping jaw loosens the carbon rod 800 to enable the carbon rod 800 to fall into the molten metal furnace, and the clamping jaw moves to the position below the discharge hole through the cooperation of the lifting mechanism 911 and the shifting mechanism 912 so as to clamp the carbon rod 800. The clamping jaw can automatically loosen or clamp the carbon rod 800 through hydraulic control or pneumatic control, so that the carbon rod 800 does not need to be manually disassembled and assembled. When the carbon rod 800 is worn, the clamping jaw can loosen the carbon rod 800 to enable the carbon rod 800 to fall into molten metal, the worn carbon rod 800 does not need to be collected, and the arrangement of an automatic collecting device of the worn carbon rod 800 can be reduced.
Referring to fig. 7 to 10, in an embodiment of the present invention, the carbon rod 800 includes a carbon rod body 810 and a large diameter section 820 disposed at an upper end of the carbon rod body 810, the discharge port includes a first discharge port 922 and a second discharge port 923, the size of the first discharge port 922 is smaller than that of the large diameter section 820, the size of the second discharge port 923 is larger than that of the large diameter section 820, the large diameter section 820 abuts against the housing 920 around the first discharge port 922 when the carbon rod 800 falls through the first discharge port 922, a through groove 924 communicating with each other is disposed between the first discharge port 922 and the second discharge port 923, and the clamping jaw can drive the carbon rod 800 to move to the second discharge port 923 to be separated from the housing 920 under the action of the translation mechanism 912 after clamping the carbon rod 800.
In the installation process of the carbon rod 800, the carbon rod 800 falls from the first discharge hole 922 first, and after the carbon rod 800 falls a certain distance, the large diameter section 820 is propped against the housing 920 around the first discharge hole 922 and is kept at the first discharge hole 922 (a 1 position in fig. 7), so as to avoid the carbon rod 800 falling from the automatic carbon rod replacing mechanism. After the carbon rod 800 on the sealing assembly at the molten metal control station is worn, the sealing assembly for completing the installation of the carbon rod 800 is moved to the molten metal control station, and in the process, the clamping jaw moves relative to the shell 920, so that the carbon rod 800 moves to the second discharge port 923 along the through groove 924 (in fig. 7, the carbon rod moves from the a1 position to the a3 position, and the a2 position is the position where the carbon rod passes in the moving process), and because the size of the second discharge port 923 is larger than that of the large-diameter section 820, when the clamping jaw descends, the carbon rod 800 can descend along with the clamping jaw to block the molten metal channel.
The shell 920 around the first discharging hole 922 is provided with the cushion pad 925, and the cushion pad 925 is used for buffering the carbon rod 800, so that the carbon rod 800 is prevented from being broken due to overlarge impact when falling. The blotter 925 is rubber spare or silica gel spare, and the casing around the first discharge gate of protrusion makes progress, and when the clamping jaw carried the carbon-point to remove, the bottom of big footpath section can be separated with the blotter, and keeps the interval with the casing around the logical groove, makes the carbon-point can not produce friction and produce the vibration that acts on seal assembly with the casing.
The carbon rod 800 further comprises a small-diameter section 830 with a size larger than that of the carbon rod body 810, the small-diameter section 830 is arranged below the large-diameter section 820, a clamping section 840 for clamping by a clamping jaw is formed between the small-diameter section 830, and the size of the small-diameter section 830 is smaller than that of the first discharging hole 922. The small diameter section 830 can smoothly pass through the first discharge hole 922 without being blocked, so that the clamping section 840 can extend out of the shell 920 to be clamped by the clamping jaw, when the carbon rod 800 seals a molten metal channel, the carbon rod 800 can be subjected to upward reaction force, and through the cooperation between the small diameter section 830 and the clamping jaw, the axial relative displacement of the carbon rod 800 and the clamping jaw can be avoided, and the leakage of the molten metal channel is prevented.
Referring to fig. 7 and 9, in an embodiment of the present invention, in order to enable the carbon rod 800 to automatically move to the first outlet 922 in the storage cavity 921 and drop from the first outlet 922, an elastic pressing plate 850 for pushing the carbon rod 800 to move toward the first outlet 922 is disposed in the storage cavity 921, one end of the storage cavity 921 near the first outlet 922 is tapered toward the first outlet 922, and a bottom wall of the storage cavity 921 near one end of the first outlet 922 is gradually inclined downward. The elastic pressing plate 850 can automatically push the carbon rods 800 to move towards the first discharge hole 922, so that the carbon rods 800 can automatically and continuously fall from the first discharge hole 922, the end position of the storage cavity 921 is set to be tapered, the number of carbon rods 800 passing through simultaneously can be limited, the first discharge hole 922 is prevented from being blocked by two carbon rods 800, and the elastic pressing plate 850 cannot extend into the storage cavity 921 because the end position is small, the bottom wall of the area is set to be inclined, and the carbon rods 800 can automatically slide towards the first discharge hole 922 under the condition of not receiving thrust.
The elastic pressing plate 850 includes a pressing plate body 851 and a spring 852, wherein the pressing plate body 851 is used for pushing the carbon rod 800, and the spring 852 is connected to the pressing plate body 851 and has an elastic force for pushing the pressing plate body 851 towards the direction of the first discharge port 922.
Referring to fig. 7, 9 and 10, in one embodiment of the present invention, a limiting plate 860 and a driving mechanism driving the limiting plate 860 to slide are slidably installed under the first outlet 922 based on the above-described embodiments. The limiting plate 860 can prevent the carbon rod 800 from falling, so that the carbon rod 800 does not extend out of the shell 920 to prevent the clamping jaw from moving when the clamping jaw does not move below the first discharge hole 922, the driving mechanism can control the limiting plate 860 to move to release the blocking effect on the carbon rod 800, and the driving mechanism can also reset the limiting plate 860 after the clamping jaw drives the carbon rod 800 to move so as to recover the blocking effect on the carbon rod 800 positioned in the storage cavity 921. The driving mechanism may be one of a cylinder, a motor, an electric cylinder or a hydraulic cylinder.
Referring to fig. 9 to 11, unlike the above embodiment, in another embodiment of the present invention, the mounting frame 900 includes a fixed mounting frame 903 and a rotating mounting frame 904 rotatably mounted on the fixed mounting frame 903, two sealing assemblies are respectively disposed at two sides of the rotating mounting frame 904, the two sealing assemblies are symmetrical with respect to the rotation axis of the rotating mounting frame 904, the housing 920 is fixedly connected with the fixed mounting frame 903, a driving motor 905 for driving the rotating mounting frame 904 to rotate is disposed at the bottom of the housing 920, and the rotating mounting frame 904 drives the sealing assemblies to rotate so that the carbon rod 800 moves from the first discharge port 922 to the second discharge port 923. The driving motor 905 may drive the rotating mounting frame 904 to rotate relative to the fixed mounting frame 903, so as to adjust the relative positions of the two sealing assemblies, so that the two sealing assemblies may obtain a new carbon rod 800 from the same first discharge hole 922, and only one storage cavity 921 may be disposed in the housing 920. When the rotary mounting frame 904 rotates, the clamping jaw drives the carbon rod 800 to synchronously move, so that the carbon rod 800 can move from the first discharge hole 922 to the second discharge hole 923 (as shown in fig. 9, the carbon rod is located at the b1 position after falling, along with the rotation of the rotary mounting frame, the carbon rod moves from the b1 position to the b4 position along the circular arc path, and the b2 and b3 positions are two positions passed by the carbon rod in the moving process). After the carbon rod 800 is completely carried out of the shell 920 under the action of the lifting mechanism 911, the position of the carbon rod 800 is adjusted by the translation mechanism 912 so that the carbon rod can be aligned with the molten metal channel.
The drive motor 905 rotates the rotary mounting frame 904 in a forward and reverse rotation manner to change the positions of the two sealing assemblies, and the through groove 924 formed in the manner of a ring. The connecting column 870 is arranged in the shell 920, the connecting column 870 is connected with the surrounding part of the shell 920, which is surrounded by the through groove 924, so that the falling of the part of the structure due to the lack of support is avoided, the driving motor 905 is arranged on the lower surface of the part of the structure, and the power supply circuit of the driving motor 905 can be arranged in the connecting column 870.
While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (24)
1. The utility model provides an immersion type mechanical control liquid level casting furnace, includes smelting furnace, holding furnace and crystallization device, crystallization device is including the appearance chamber that is used for holding the molten metal, holding furnace respectively with smelting furnace and appearance chamber intercommunication, be equipped with the drawing head on the crystallization device, hold the chamber with holding furnace keeps the intercommunication, its characterized in that, holding furnace has liftable impregnator, impregnator submerges the liquid level in the molten metal in order to lifting holding chamber, crystallization device has liquid level detection device, impregnator is according to liquid level detection device's detection signal adjustment elevation height makes the liquid level in holding chamber keep at preset height.
2. The submerged mechanical control level casting furnace of claim 1, wherein the submerged entry nozzle comprises a submerged entry nozzle body and a lifting rod coupled to the submerged entry nozzle body, wherein the holding furnace is provided with a drive for driving the lifting rod up and down relative to the holding furnace.
3. An immersion type mechanical control level casting furnace as claimed in claim 2 wherein the interior of said immersion body is hollow.
4. The submerged mechanical control level casting furnace of claim 1, wherein the crystallization device further comprises a furnace body and a cooling jacket disposed on the furnace body, wherein the cavity is formed by the furnace body, and wherein the pulling head pulls molten metal from the cooling jacket to cool the molten metal into a metal cast billet by the cooling jacket.
5. The submerged entry nozzle of claim 1, wherein the lower end of the holding furnace is in communication with the lower end of the crystallization apparatus, and wherein the bottom wall of the holding furnace is lower than the bottom wall of the vessel.
6. The submerged entry nozzle of claim 5, wherein the bottom wall of the holding furnace is gradually raised toward the crystallization device, the bottom wall of the chamber is gradually lowered toward the holding furnace, the holding furnace and the crystallization device are in fluid communication with each other through a fluid passage, and the fluid passage is connected to one end of the holding furnace and gradually raised toward the end connected to the crystallization device.
7. The submerged mechanical control liquid level casting furnace of claim 1, wherein the upper end of the holding furnace is provided with a molten metal inlet communicated with the smelting furnace, the bottom wall of the smelting furnace is provided with a molten metal outlet communicated with the molten metal inlet, and the bottom wall of the smelting furnace at the side part of the molten metal outlet is downwards sunken to form an impurity precipitation zone.
8. The submerged entry nozzle of claim 7, wherein a first baffle is disposed on a side of the holding furnace adjacent the molten metal inlet, the first baffle and the bottom wall of the holding furnace form a gap through which molten metal flows, and an end of the bottom of the holding furnace remote from the gap is in communication with the cavity.
9. The submerged entry nozzle of claim 7, wherein a second baffle is positioned on a side of the furnace remote from the molten metal outlet, wherein a feed material inlet is defined between the second baffle and the end of the furnace, and wherein the impurity precipitation zone is positioned outside the vertical projection of the feed material inlet.
10. The submerged mechanical control level casting furnace of claim 7, further comprising a double-position replacement valve comprising a mounting and two mutually complementary sealing assemblies disposed on the mounting, the sealing assemblies comprising a carbon rod and a moving carbon rod assembly, the moving carbon rod assembly being configured to translate and raise the carbon rod to block or unblock a molten metal outlet through the carbon rod.
11. The submerged mechanical control liquid level casting furnace of claim 1, wherein the bottom wall of the holding furnace near the side of the crystallization device is provided with a third baffle, and the side of the third baffle facing the crystallization device is a diversion surface which deflects towards the crystallization device from top to bottom.
12. The submerged entry nozzle of claim 11, wherein said third baffle is positioned below the casting center of said pulling head, and wherein said third baffle is provided with a plurality of through holes spaced apart in the height direction.
13. An immersion type mechanical control level casting furnace as claimed in claim 1 wherein a plurality of said infusers are provided, said plurality of infusers being lowered into the molten metal in sequence during continuous casting.
14. The submerged mechanical control liquid level casting furnace of claim 1, wherein the liquid level detecting device comprises a floating ball, a floating rod connected to the floating ball and a sensor for detecting the displacement of the floating rod to determine the liquid level, the crystallization device is provided with a positioning mechanism, the positioning mechanism comprises at least two roller groups arranged at intervals along the vertical direction, and each roller group comprises rollers which are arranged at two sides of the floating rod in pairs and roll along with the floating of the floating rod.
15. The double-station replacement valve is characterized by comprising a mounting frame and two mutually-complementary sealing assemblies arranged on the mounting frame, wherein each sealing assembly comprises a carbon rod and a movable carbon rod assembly, and the movable carbon rod assembly is used for translating and lifting the carbon rod so as to block or open a molten metal channel between two molten metal furnaces.
16. The double-station replacement valve according to claim 15, wherein the movable carbon rod assembly comprises a lifting mechanism with a carbon rod clamping device and a translation mechanism for driving the lifting mechanism to move in a translation mode, the mounting frame is provided with a molten metal control station, the sealing assembly positioned at the molten metal control station drives the carbon rod to lift through the lifting mechanism so as to block or open a molten metal channel between two molten metal furnaces, the two sealing assemblies are symmetrically arranged, after the carbon rod of one sealing assembly is worn, the sealing assembly is moved to the molten metal control station through the cooperation of the lifting mechanism and the translation mechanism, and the other sealing assembly is moved to the molten metal control station through the cooperation of the lifting mechanism and the translation mechanism.
17. The dual position replacement valve of claim 16 wherein two of said seal assemblies are disposed on a same side of said mounting frame, said seal assemblies further comprising a slide plate and a slide rail, said slide plate being slidably mounted on said slide rail, said lift mechanism being disposed on said slide plate, said translation mechanism being disposed on said mounting frame for driving said slide plate to slide along said slide rail.
18. The double-acting replacement valve of claim 16 further comprising an automatic carbon rod replacement mechanism comprising a housing, a storage cavity disposed in the housing, a discharge port disposed on the housing and in communication with the storage cavity, the carbon rod stored in the storage cavity and being accessible for falling through the discharge port to be held by the carbon rod holding device.
19. The double-station replacement valve of claim 18 wherein the carbon rod holding means is a hydraulically or pneumatically controlled jaw which releases the carbon rod upon exiting the molten metal control station to drop the carbon rod into the molten metal furnace, the jaw being moved under the tap hole by the cooperation of the lifting mechanism and the translating mechanism to hold the carbon rod.
20. The double-station replacement valve according to claim 18, wherein the carbon rod comprises a carbon rod body and a large-diameter section arranged at the upper end of the carbon rod body, the discharge port comprises a first discharge port and a second discharge port, the size of the first discharge port is smaller than that of the large-diameter section, the size of the second discharge port is larger than that of the large-diameter section, the large-diameter section is abutted to a shell around the first discharge port when the carbon rod falls through the first discharge port, a through groove communicated with each other is arranged between the first discharge port and the second discharge port, and the carbon rod clamping device can drive the carbon rod to move to the second discharge port to be separated from the shell after clamping the carbon rod.
21. The dual position replacement valve of claim 20, wherein the carbon rod further comprises a small diameter section having a size greater than the carbon rod body, the small diameter section being disposed below the large diameter section and forming therebetween a clamping section for the carbon rod clamping device to clamp, the small diameter section having a size less than the first discharge port.
22. The double-station replacement valve according to claim 20, wherein the mounting frame comprises a fixed mounting frame and a rotating mounting frame rotatably mounted on the fixed mounting frame, the two sealing assemblies are respectively arranged on two sides of the rotating mounting frame, the two sealing assemblies are symmetrical relative to the rotation axis of the rotating mounting frame, the shell is fixedly connected with the fixed mounting frame, a driving motor for driving the rotating mounting frame to rotate is arranged at the bottom of the shell, and the rotating mounting frame drives the sealing assemblies to rotate so that the carbon rod moves from the first discharge hole to the second discharge hole.
23. The dual replacement valve of claim 20, wherein a limiting plate and a driving mechanism driving the limiting plate to slide are slidably mounted below the first outlet.
24. The double-station replacement valve according to claim 18, wherein an elastic pressing plate for pushing the carbon rod to move towards the direction of the discharge port is arranged in the storage cavity, one end of the storage cavity, which is close to the discharge port, is tapered towards the direction of the discharge port, and the bottom wall of the storage cavity, which is close to one end of the discharge port, is gradually inclined downwards.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211667588.7A CN116037910A (en) | 2022-12-23 | 2022-12-23 | Double-station replacement copper liquid valve |
| CN2022116691767 | 2022-12-23 | ||
| CN2022116675887 | 2022-12-23 | ||
| CN202211669176.7A CN116021006A (en) | 2022-12-23 | 2022-12-23 | Immersion type mechanical control liquid level casting furnace |
| CN2023113533 | 2023-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117651618A true CN117651618A (en) | 2024-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202380010550.9A Pending CN117651618A (en) | 2022-12-23 | 2023-08-17 | Immersion type mechanical control liquid level casting furnace and double-station replacement valve |
Country Status (2)
| Country | Link |
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| US (1) | US11931797B1 (en) |
| CN (1) | CN117651618A (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5073531B2 (en) | 2007-04-10 | 2012-11-14 | 新日本製鐵株式会社 | Slab continuous casting apparatus and method for continuous casting |
| WO2010132361A2 (en) * | 2009-05-10 | 2010-11-18 | Inductotherm Corp. | Stopper rod positioning and control apparatus for control of molten metal flow through a nozzle |
| DE102020207016A1 (en) | 2020-06-04 | 2021-12-09 | Oskar Frech Gmbh + Co. Kg | Casting unit for a die casting machine |
| CN111854431B (en) | 2020-07-10 | 2021-02-19 | 吴书平 | Heating system in immersive stove |
| CN214768847U (en) | 2020-11-17 | 2021-11-19 | 周占武 | Low-pressure casting machine holding furnace |
| CN112658236B (en) | 2020-12-16 | 2022-09-13 | 中国科学院沈阳自动化研究所 | Quantitative pouring device for nonferrous metal cast ingot |
| CN112743057A (en) | 2020-12-28 | 2021-05-04 | 浙江海亮股份有限公司 | Horizontal continuous casting furnace set for red copper bar blank |
| CN113976871A (en) * | 2021-11-22 | 2022-01-28 | 北京联合荣大工程材料股份有限公司 | Stopper rod replacing device |
| CN217474826U (en) | 2022-01-19 | 2022-09-23 | 吴书平 | Liquid lifting device and flow distribution mechanism for quantitative furnace |
| CN116021006A (en) | 2022-12-23 | 2023-04-28 | 浙江海亮股份有限公司 | Immersion type mechanical control liquid level casting furnace |
| CN219169605U (en) | 2022-12-23 | 2023-06-13 | 浙江海亮股份有限公司 | Double-station replacement copper liquid valve |
| CN116037910A (en) | 2022-12-23 | 2023-05-02 | 浙江海亮股份有限公司 | Double-station replacement copper liquid valve |
| CN219274461U (en) | 2022-12-23 | 2023-06-30 | 浙江海亮股份有限公司 | Immersion type mechanical control liquid level casting furnace |
-
2023
- 2023-08-17 CN CN202380010550.9A patent/CN117651618A/en active Pending
- 2023-08-29 US US18/239,519 patent/US11931797B1/en active Active
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