阅读说明：本技术 一种有色金属熔液智能定量浇铸系统及方法 (Intelligent quantitative casting system and method for molten nonferrous metal ) 是由 童少军 周南方 于 2020-06-01 设计创作，主要内容包括：本发明公开了一种有色金属熔液智能定量浇铸系统,包括感应炉、熔液泵、中间锅、摆臂式熔液浇铸机、括控制系统；所述感应炉内设有液位传感器；所述中间锅设有回液溜槽；所述摆臂式熔液浇铸机包括底座、浇铸机；所述底座上安装有摆臂；所述摆臂与驱动装置A连接；所述摆臂的上端转动连接有转轴；所述转轴上安装有舀勺；所述转轴与驱动装置B连接；所述浇铸机机上设有接锭溜槽；所述接锭溜槽通过驱动装置C驱动绕轴转动角度；所述液位传感器、熔液泵、驱动装置A、驱动装置B、驱动装置C均与控制系统电连接。本发明还公开了一种浇铸方法,包括舀液、倒液、浇铸等步骤。本发明可实现定量浇铸,使锭的重量精度提高到0.8%,且能减少氧化膜的产生。(The invention discloses an intelligent quantitative casting system for molten nonferrous metal, which comprises an induction furnace, a molten metal pump, an intermediate pot, a swing arm type molten metal casting machine and a control system, wherein the induction furnace is connected with the molten metal pump through a pipeline; a liquid level sensor is arranged in the induction furnace; the intermediate pot is provided with a liquid return chute; the swing arm type melt casting machine comprises a base and a casting machine; the base is provided with a swing arm; the swing arm is connected with a driving device A; the upper end of the swing arm is rotatably connected with a rotating shaft; a scoop is mounted on the rotating shaft; the rotating shaft is connected with a driving device B; the casting machine is provided with a ingot receiving chute; the spindle receiving chute is driven to rotate around the shaft by a driving device C; and the liquid level sensor, the melt pump, the driving device A, the driving device B and the driving device C are all electrically connected with the control system. The invention also discloses a casting method, which comprises the steps of scooping liquid, pouring liquid, casting and the like. The invention can realize quantitative casting, improve the weight precision of the ingot to 0.8 percent and reduce the generation of an oxidation film.)

1. An intelligent quantitative casting system for molten nonferrous metal is characterized by comprising an induction furnace, a molten metal pump, an intermediate pot, a swing arm type molten metal casting machine and a control system, wherein the induction furnace, the molten metal pump, the intermediate pot and the swing arm type molten metal casting machine are sequentially communicated;

a liquid level sensor is arranged in the induction furnace; the melt pump pumps the melt to the intermediate pot through a pump liquid outlet pipe; the upper end of the intermediate pot is provided with a liquid return chute;

the swing arm type melt casting machine comprises a base and a casting machine;

the base is provided with a swing arm; the swing arm is connected with a driving device A; the upper end of the swing arm is provided with a rotating shaft, and the swing arm is rotatably connected with the rotating shaft; a scoop is arranged on the rotating shaft; the rotating shaft is connected with a driving device B; in the operation process from scooping the molten liquid to pouring the molten liquid, the scooping spoon needs to be vertical to the horizontal plane, and the swing arm and the rotating shaft synchronously operate;

the casting machine is provided with a ingot receiving chute; the ingot receiving chute is driven to rotate around a shaft by a driving device C; a liquid outlet is formed in the bottom of the ingot receiving chute;

and the liquid level sensor, the melt pump, the driving device A, the driving device B and the driving device C are all electrically connected with the control system.

2. The intelligent quantitative casting system for molten nonferrous metal according to claim 1, wherein the swing arm comprises a left swing arm and a right swing arm; the mandrel sequentially penetrates through the left swing arm and the right swing arm and is connected with the driving device A, and the mandrel is fixedly connected with the left swing arm and the right swing arm; the rotating shaft penetrates through the left swing arm and the right swing arm in sequence and is connected with the driving device B, and the rotating shaft is rotatably connected with the left swing arm and the right swing arm; 2 scooping scoops are arranged at the position of the rotating shaft between the left swing arm and the right swing arm; the ingot receiving chute is provided with 2 independent cavities, and openings of the 2 cavities correspond to the liquid pouring positions of the 2 scoops respectively; in the operation process from the ladle of the molten liquid to the pouring of the molten liquid, the ladle needs to be vertical to the horizontal plane, and the rotating shaft and the mandrel synchronously operate.

3. The intelligent quantitative casting system for molten nonferrous metal according to claim 2, wherein proximity switch sensors are mounted at the shaft ends of the spindle and the rotating shaft, and the proximity switch sensors are electrically connected with the control system.

4. An intelligent quantitative casting system for molten non-ferrous metal according to any one of claims 1 to 3, wherein the inlet of the molten metal pump is provided with a filtering device.

5. The intelligent quantitative casting system for molten nonferrous metal according to any one of claims 1 to 3, wherein the driving device A is a swing arm motor; the driving device B is a scoop motor; the driving device C is an oil cylinder.

6. The intelligent quantitative casting system for molten nonferrous metal according to claim 5, wherein the swing arm motor and the ladle motor are servo motors, the swing arm motor and the ladle motor are electrically connected with a motion controller, and the motion controller is electrically connected with the control system.

7. An intelligent quantitative casting method for molten nonferrous metal is characterized by comprising the following steps:

a. the liquid level sensor detects the liquid level height in the induction furnace and sends the liquid level height to the control system, the control system controls feeding or stops feeding, the melt pump pumps the solution to the intermediate pot, so that the liquid level height in the intermediate pot is kept at H1, and redundant solution higher than H1 liquid level in the intermediate pot flows back to the induction furnace through the liquid return chute;

b. the swing arm motor drives the left and right swing arms to rotate by an angle omega 1 to the intermediate pot, the ladle motor drives the ladle to rotate by an angle a1+ a2, and the melt is ladled out; then the swing arm motor drives the left and right swing arms to rotate by an angle omega 1+ omega 2 from the intermediate pot to the casting machine, and meanwhile, the molten liquid in the ladle is kept horizontal in the process; then the swing arm motor drives the left and right swing arms to rotate by an angle omega 3 to approach the casting machine, and simultaneously the ladle motor drives the ladle to slowly rotate by an angle a3+ a4 to pour out the melt to the ingot receiving chute;

c. the ingot receiving chute is used for receiving liquid and discharging the liquid into the ingot casting mold through the swinging angle driven by the oil cylinder to finish the casting action; and entering the next working cycle.

8. The intelligent quantitative casting method for molten nonferrous metal according to claim 7, wherein the casting method comprises the steps of,

step c, specifically, receiving the liquid by an ingot receiving chute swinging angle a5, and pouring the liquid into an ingot casting mold by a swinging angle a5 to finish casting; after the molten liquid is poured out, the swing arm returns quickly and the scoop rotates to a liquid inlet angle a 2; and entering the next working cycle.

9. The intelligent quantitative casting method for molten nonferrous metal according to claim 7, wherein the spindle and the rotating shaft adopt a virtual spindle control method.

Technical Field

The invention belongs to the technical field of non-ferrous metal smelting and casting, and particularly relates to an intelligent quantitative casting system and method for non-ferrous metal melt.

Background

A double scoop zinc scooping apparatus disclosed in publication No. CN201346617Y on 11/18/2009 casts zinc liquid in an industrial furnace onto a zinc ingot mold. Because the zinc sheet is intermittently added into the industrial furnace by workers and the melting of the zinc sheet takes time, the height of the zinc liquid in the industrial furnace is changed, the rotating angle of each time of scooping the zinc liquid is the same and the casting process is continuous, so the quality of the zinc ingot formed by each casting cannot be kept consistent, the weight error of the zinc ingot of 25Kg level at present is +/-2 Kg, and the quality of the zinc ingot is seriously influenced by larger quality error.

In addition, there is the double-spoon zinc device of ladling out of No. 201346617Y in addition, the gravity that zinc liquid itself utilized through the chute of installation and oven to flow into the ingot mould through the zinc liquid self-flowing casting mode accomplishes the casting, and the ladle device passes through motor drive crank link mechanism, ladle out into the ingot mould through ladling out the zinc spoon with the zinc liquid ration and accomplish the casting, the zinc liquid self-flowing mode is owing to receive the restriction of liquid level height in the furnace, flow control is more difficult, often cause the inaccurate problem of ration, and because crank link mechanism reciprocating motion once needs certain time cycle, the ladle is controlled for single swing arm angle, this patent also has the problem that mass error is big, and the ladle angle can not be along with the machine control scheduling problem.

At present, the spoon ladling casting mode of nonferrous metals is the same because of the same turning angle of each ladle and the casting process is continuous action, most of the casting modes are influenced by the height of the liquid level, so that the quality of zinc ingots formed by casting at each time can not be kept consistent, the weight error of 25 Kg-level ingots at present has +/-2 Kg, the quality of the ingots is seriously influenced by larger solution errors, although patent CN 110732660A is provided, the control capacity of the ladle angle is changed through the liquid level, certain effect is improved, but the casting process can not be controlled along with a casting machine, and the weight error is large.

Therefore, it is urgently needed to solve the quantitative casting problem in the casting process.

Disclosure of Invention

The invention provides an intelligent quantitative casting system device for molten nonferrous metal, which adopts the following technical scheme:

an intelligent quantitative casting system for molten nonferrous metal comprises an induction furnace, a molten metal pump, an intermediate pot, a swing arm type molten metal casting machine and a control system, wherein the induction furnace, the molten metal pump, the intermediate pot and the swing arm type molten metal casting machine are sequentially communicated;

a liquid level sensor is arranged in the induction furnace; the melt pump pumps the melt to the intermediate pot through a pump liquid outlet pipe; the upper end of the intermediate pot is provided with a liquid return chute;

the swing arm type melt casting machine comprises a base and a casting machine;

the base is provided with a swing arm; the swing arm is connected with a driving device A; the upper end of the swing arm is provided with a rotating shaft, and the swing arm is rotatably connected with the rotating shaft; a scoop is arranged on the rotating shaft; the rotating shaft is connected with a driving device B; in the operation process from scooping the molten liquid to pouring the molten liquid, the scooping spoon needs to be vertical to the horizontal plane, and the swing arm and the rotating shaft synchronously operate;

the casting machine is provided with a ingot receiving chute; the ingot receiving chute is driven to rotate around a shaft by a driving device C; a liquid outlet is formed in the bottom of the ingot receiving chute;

and the liquid level sensor, the melt pump, the driving device A, the driving device B and the driving device C are all electrically connected with the control system.

Preferably, the swing arms comprise a left swing arm and a right swing arm; the mandrel sequentially penetrates through the left swing arm and the right swing arm and is connected with the driving device A, and the mandrel is fixedly connected with the left swing arm and the right swing arm; the rotating shaft penetrates through the left swing arm and the right swing arm in sequence and is connected with the driving device B, and the rotating shaft is rotatably connected with the left swing arm and the right swing arm; 2 scooping scoops are arranged at the position of the rotating shaft between the left swing arm and the right swing arm; the ingot receiving chute is provided with 2 independent cavities, and openings of the 2 cavities correspond to the liquid pouring positions of the 2 scoops respectively; in the operation process from the ladle of the molten liquid to the pouring of the molten liquid, the ladle needs to be vertical to the horizontal plane, and the rotating shaft and the mandrel synchronously operate.

Preferably, the shaft ends of the spindle and the rotating shaft are provided with proximity switch sensors, and the proximity switch sensors are electrically connected with a control system.

Preferably, the inlet of the melt pump is provided with a filter device.

Preferably, the driving device A is a swing arm motor; the driving device B is a scoop motor; the driving device C is an oil cylinder.

Preferably, the swing arm motor and the spoon motor are servo motors, the swing arm motor and the spoon motor are electrically connected with the motion controller, and the motion controller is electrically connected with the control system.

A casting method of an intelligent quantitative casting system for molten nonferrous metal comprises the following steps:

a. the liquid level sensor detects the liquid level height in the induction furnace and sends the liquid level height to the control system, the control system controls feeding or stops feeding, the melt pump pumps the solution to the intermediate pot, so that the liquid level height in the intermediate pot is kept at H1, and redundant solution higher than H1 liquid level in the intermediate pot flows back to the induction furnace through the liquid return chute;

b. the swing arm motor drives the left and right swing arms to rotate by an angle omega 1 to the intermediate pot, the ladle motor drives the ladle to rotate by an angle a1+ a2, and the melt is ladled out; then the swing arm motor drives the left and right swing arms to rotate by an angle omega 1+ omega 2 from the intermediate pot to the casting machine, and meanwhile, the molten liquid in the ladle is kept horizontal in the process; then the swing arm motor drives the left and right swing arms to rotate by an angle omega 3 to approach the casting machine, and simultaneously the ladle motor drives the ladle to slowly rotate by an angle a3+ a4 to pour out the melt to the ingot receiving chute;

c. the ingot receiving chute is used for receiving liquid and discharging the liquid into the ingot casting mold through the swinging angle driven by the oil cylinder to finish the casting action; and entering the next working cycle.

Preferably, the step c is specifically that the ingot receiving chute swings at an angle a5 to receive the liquid, and then swings at an angle a5 to pour the liquid into the ingot casting mold to finish casting; after the molten liquid is poured out, the swing arm returns quickly and the scoop rotates to a liquid inlet angle a 2; and entering the next working cycle.

Preferably, the spindle and the rotating shaft adopt a virtual spindle control method.

The invention has the beneficial effects that:

1. at present, most nonferrous smelting enterprises can not accurately control the liquid level in the induction furnace, and the mode of blind feeding or intermittent feeding is usually adopted for feeding.

The liquid level in the induction furnace is monitored in real time by the floating ball liquid level meter in the induction furnace, the feeding is carried out when the liquid level is lower than the low liquid level, the feeding is stopped when the liquid level is higher than the high liquid level, the constant liquid level height in the furnace is ensured, and uncontrollable factors of ladle casting caused by too high and too low liquid levels are reduced.

2. Non-ferrous smelting enterprises, especially zinc smelting, have a plurality of self-flowing modes, the self-flowing mode is that impurities or scum are always carried in the molten liquid, and the impurities usually flow into an ingot casting mold.

The invention utilizes the melt pump to continuously supplement the melt to the intermediate pot, and the intermediate pot is provided with the melt return chute to keep the melt in the intermediate pot at a certain liquid level. And a filtering device is arranged at the inlet of the melt pump, so that the melt pump has a certain filtering function.

3. At present nonferrous smelting enterprise's casting mode has the mode that drives the crank connecting rod through the motor and ladles out zinc, owing to receive the influence of liquid level height to and swing arm formula melt casting machine controls the volume of melt through the swing ladling spoon angle, ladles out the not quantitative container of spoon also, and the unable self-adaptation liquid level's of swing angle height moreover.

The ladle of the invention is a quantitative ladle, the rotating angle of the ladle can be controlled in multiple angles, and the rotating angle of the ladle is controlled by the servo motor, so that the volume of the molten liquid scooped each time can be accurately controlled, the weight of the ingot is further controlled, and the weight precision is improved to 0.8%.

4. At present, nonferrous smelting enterprises generally directly cast the melt into a cast ingot mould through the swinging angle of a ladle, the melt is often cast into the mould with larger fluctuation, the generated oxidation film is correspondingly increased,

the molten liquid scooped up by the ladle is poured into the ingot receiving chute firstly, the molten liquid flows into the ingot casting mold through the swing angle of the ingot receiving chute, 2 molds can be cast simultaneously by the ingot receiving chute, and the swing angle of the ingot receiving chute is relatively small, so that the generation of an oxide film is reduced, and the alignment yield is improved to a certain extent.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a non-ferrous metal swing arm type solution casting machine according to the present invention;

FIG. 3 is a schematic view of the angle control of the scoop of the present invention;

FIG. 4 is a schematic view of the synchronized movement of the main shaft and the slave shaft;

wherein: 1. the liquid level of the floating ball; 2. an induction furnace; 3. a liquid return chute; 4. a solution pump; 5. a pump liquid outlet pipe; 6. an intermediate pot; 7. a swing arm type melt casting machine; 8. receiving an ingot chute; 9. casting an ingot line; 10. a base; 11. a mandrel; 12. a left swing arm; 13. a rotating shaft; 14. scooping; 15. an ingot casting machine; 16. a right swing arm; 17. a scoop motor; 18. a swing arm motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, an intelligent quantitative casting system for molten nonferrous metal comprises an induction furnace, a molten metal pump, a liquid outlet pipe, an intermediate pot, a swing arm type molten metal casting machine and a control system which are sequentially communicated;

a liquid level sensor is arranged in the induction furnace, and in the embodiment, the liquid level sensor is a floating ball liquid level meter. The intermediate pot is provided with a liquid return chute. And continuously pumping fresh melt to the intermediate pot by the melt pump, so that the liquid level of the intermediate pot is kept at H1. When the height of the molten liquid in the intermediate pot exceeds H1, the molten liquid flows back to the induction furnace through the liquid return chute. The floating ball liquid level meter monitors the liquid level in the furnace in real time, the material feeding is carried out when the liquid level in the induction furnace is sensed to be the liquid level in the middle pot H2, the material feeding is stopped when the liquid level in the induction furnace is higher than the liquid level in the middle pot, and the liquid level in the induction furnace is ensured to be always kept at a certain liquid level height; the uncontrollable factors that the liquid level is too high and too low for ladle casting are reduced.

The swing arm type melt casting machine comprises a base and a casting machine; the base is provided with a swing arm; the lower end of the swing arm is provided with a mandrel, and the mandrel is connected with a swing arm motor; the upper end of the swing arm is provided with a rotating shaft through a bearing; a scoop is mounted on the rotating shaft; the rotating shaft is connected with a scoop motor. And an ingot receiving chute is arranged on the casting machine.

The oil cylinder is fixed above the casting line through an oil cylinder base. The left upper part of the ingot receiving chute is fixed through a shaft; a piston rod of the oil cylinder supports the groove edge at the upper end of the ingot receiving chute; the ingot receiving chute is driven by an oil cylinder to swing around a shaft; the swing angle a5 of the ingot receiving chute receives liquid and discharges the liquid to the ingot casting mold on the casting line.

The floating ball liquid level meter, the melt pump, the swing arm motor, the scoop motor and the oil cylinder are all connected with the control system.

In this embodiment, the swing arm includes a left swing arm and a right swing arm.

The ladle can be a single ladle or a double ladle, the ingot receiving chute is provided with two liquid outlets, and 2 molds can be cast simultaneously.

The inlet of the melt pump is provided with a filtering device which can filter the melt.

In this embodiment, the scoop is made of ceramic fiber material, and is high temperature resistant and does not stick to the melt.

A casting method of an intelligent quantitative casting system for molten nonferrous metal comprises the following steps:

a. the liquid level sensor detects the liquid level height in the induction furnace and sends the liquid level height to the control system, the control system controls the feeding or stopping the feeding (the control system sends a feeding signal to the feeding device after receiving a low liquid level signal, and sends a feeding stopping signal to the feeding device after receiving a high liquid level signal), the melt pump pumps the solution to the intermediate pot, so that the liquid level height in the intermediate pot is kept at H1, and the redundant solution in the intermediate pot, which is higher than the H1 liquid level, flows back to the induction furnace through the liquid return chute 3;

b. the control system sends a signal to the motion controller, the motion controller sends a signal to the swing arm motor and the scoop motor, the swing arm motor is started, the swing arm motor drives the left swing arm and the right swing arm to rotate through the mandrel, the scoop motor is started, the scoop motor drives the scoop to rotate through the rotating shaft, the molten liquid is scooped and poured into the ingot receiving chute;

c. the control system sends a signal to the oil cylinder, and the piston rod of the oil cylinder extends and retracts to drive the ingot receiving chute to swing by an angle so as to receive liquid and discharge the liquid into the ingot casting mold, so that the casting action is completed.

Specifically, the motion controller controls a swing arm motor to drive a left swing arm and a right swing arm to accelerate a rotation angle omega 1 to the middle pot, and controls a ladle motor to drive a ladle rotation angle a1+ a2 to ladle molten liquid; then the motion controller controls the swing arm motor to drive the left swing arm and the right swing arm to rotate at an accelerated rotation angle omega 1+ omega 2 from the intermediate pot to the casting machine, and meanwhile, the process keeps the molten liquid in the ladle horizontal (namely the ladle is vertical to the horizontal plane); the motion controller controls the swing arm motor to drive the left swing arm and the right swing arm to rotate at a speed reducing angle omega 3 to approach the casting machine, meanwhile, the ladle slowly rotates at an angle a3+ a4 to pour out the melt to the ingot receiving chute, the control system controls the oil cylinder, the oil cylinder drives the ingot receiving chute to receive the melt at a shaft swinging angle a5, and then the oil cylinder swings at an angle a5 to pour out the melt to the ingot casting mold; after the molten liquid is poured out, the motion controller controls the swing arm motor to drive the left swing arm and the right swing arm to quickly return; meanwhile, the scoop rotates to a liquid inlet angle a2, and enters the next working cycle (in the embodiment, a1 is 26 degrees, a2 is 42 degrees, a3 is 35 degrees, a4 is 10 degrees, a5 is 31 degrees, omega 1 is 67 degrees, omega 2 is 35 degrees, and omega 3 is 33 degrees).

The invention can be simultaneously configured with a single scoop or double scoops, the scoops are quantitative containers, guarantee is provided for the quality control of the metal ingot, and the scooping material is ceramic fiber and is high temperature resistant and does not stick to the solution.

The liquid level of the intermediate pot of the invention does not need to be controlled independently, and the normal ladle liquid level is the height H1 of the overflow liquid level.

The solution scooped by the scoop is firstly poured into the ingot receiving chute, the ingot receiving chute receives the solution and the liquid through the swing angle a5 of the oil cylinder, the ingot receiving chute can simultaneously cast double molds, and the fluctuation of the liquid level can be reduced because the swing angle of the ingot receiving chute is smaller, so that the generation of an oxide film can be reduced.

The swing arm motor and the scoop motor of the present invention are both servo motors, and the swing arm motor and the scoop motor are electrically connected to the motion controller, because the spindle of the swing arm and the rotating shaft of the scoop are controlled by separate servo motors (the spindle and the rotating shaft adopt a virtual spindle control method, i.e. the spindle is a virtual axis, and the spindle and the rotating shaft are slave axes), as shown in fig. 4 specifically:

in a conventional mechanical synchronization scheme, the moving shafts are connected to a main shaft via a transmission mechanism, and the main shaft transmits a driving torque to each moving shaft (slave shaft) and functions as a synchronization coordinator. When a certain motion axis is disturbed to change the speed, the change can influence the output of the main shaft through torque feedback, so that the speeds of other axes change in the same trend, and the effect of reducing the synchronous error is achieved. The virtual spindle control method uses a motion controller to simulate the above process to realize synchronous control.

The mechanical spindle may be affected by the slave axis, but the virtual spindle may not, if the process control has any slave axis lag or abnormality, the motion controller may be signaled to stop the operation of all axes, including the virtual spindle. The traditional mechanical master-slave mode and the virtual main shaft mode can be synchronized, the difference is that the former always follows the main shaft from the driven shaft and needs to be separated from synchronization when scooping or pouring liquid, and the latter can be free from mutual interference and can not need to be separated from synchronization, and only the two driven shafts are respectively synchronized with the virtual main shaft and respectively plan curves. Because the main shaft is virtually set, various parameters of the main shaft can be flexibly modified.

Because of the spindle of swing arm is solitary servo motor control with the pivot of ladling out the spoon, the pivot of ladling out the spoon is adjusted with the spindle angle of swing arm and speed control is very accurate convenient, controls as follows:

(1) in the operation process from the ladle-up of the molten liquid to the pouring of the molten liquid, the ladle-up needs to be vertical to the horizontal plane, the rotating shaft and the mandrel are required to synchronously operate, the molten liquid is prevented from splashing, and the synchronous error is not more than 0.5 degrees. And a display interface of the motion controller displays the running states, alarm information, running angles, cycle running time and the like of the two shafts.

(2) The melt ladling position and the liquid pouring position of the ladle and the speed of the mandrel and the rotating shaft can be adjusted by the operation controller. In the invention, because the lengths, the original positions and the size of the scoop and the position of the middle pot are known and the height of the prepared position of the adjusted scoop liquid is known, the specific angles of omega 1, a1 and a2 can be calculated, and the specific angles of omega 3, a3 and a4 can also be calculated by adjusting the position of the pouring liquid level in the same way)

(3) Swing arm and scoop up the spoon and can return the normal position automatically and be in the braking state at the off-state, prevent that the cantilever from because of receiving external force action (install primary importance proximity switch sensor at mandrel and pivot axle head, after shutting down, control system drive swing arm motor and scoop up the spoon motor and rotate, thereby swing arm and scoop up the spoon and reply to the normal position about the drive, swing arm and scoop up the spoon and get back to the primary importance about sensing until proximity switch sensor, proximity switch sensor sends signal and gives control system, then control system sends signal and gives scoop up spoon motor and swing arm motor, scoop up the spoon motor and gets into the braking state with the swing arm motor.

The invention controls the liquid flow in various ways, overcomes the instability of manual control, overcomes the defect of unstable casting quality in the past, ensures the stable liquid flow in the whole casting process, reduces the generation of an oxide film, improves the weight uniformity of the cast ingot and the surface quality of the cast ingot, and has the performances of safety, stability and high efficiency. The method meets the requirements of production enterprises on high yield under the condition of the same equipment, improves the casting quality and simultaneously improves the direct yield of nonferrous smelting.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.