Liquid level control system of molten aluminum runner

Abstract

A liquid level control system of a molten aluminum runner comprises a stopper, a liquid level detection mechanism and a stopper control mechanism, the liquid level detection mechanism is arranged above the molten aluminum runner, the stopper control mechanism comprises a driving rod, a driving motor and a reset spring, the driving rod is of an L-shaped structure, the vertical section of the driving rod is hinged to the side wall of the molten aluminum runner, and the vertical section of the driving rod is hinged to the side wall of the molten aluminum runner. The horizontal section of the driving rod is located above the molten aluminum flow groove and connected with the stopper rod, the driving motor is electrically connected with the liquid level detection mechanism through the central control room and arranged below the molten aluminum flow groove, a control arm is fixed to an output shaft of the driving motor in the circumferential direction, and one end of the control arm is bent to make contact with the driving end of the vertical section of the driving rod. One end of the reset spring is fixed, and the other end is connected with the horizontal section of the driving rod, so that the vertical section of the driving rod tends to rotate towards the driving motor. The device is simple in structure and low in maintenance cost, can quickly and accurately control the liquid level of the molten aluminum runner, and meets the production requirements of enterprises.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aluminium processing, especially relates to a liquid level control system of aluminium water flow groove. BACKGROUND

[0002] The aluminium water in the smelting furnace of aluminium processing enterprise is discharged through the aluminium water flow groove and is used for pouring forming.

[0003] According to production requirement, the aluminium water liquid level of aluminium water flow groove needs to be controlled.

[0004] Usually, the insertion depth of the stopper in the flared mouth of the smelting furnace wall is manually controlled. Since the aluminium water temperature is high, the operation environment is poor, and there is a risk of scalding.

[0005] There is also a float ball arranged in the aluminium water flow groove, the stopper is driven to move through the lifting of the float ball, and then the purpose of controlling the aluminium water liquid level is achieved. This control structure can replace manual operation, but has defects of low control precision and high liquid level control delay, and cannot meet the needs of enterprises.

[0006] Therefore, designing a liquid level control system with high control precision and low delay is a problem to be solved by the person skilled in the art. SUMMARY

[0007] The utility model aims at the shortage of prior art, provides a kind of liquid level control system of aluminium water flow groove, its structure is simple, maintenance cost is low, the liquid level of aluminium water flow groove can be controlled quickly and accurately, meet the production needs of enterprise.

[0008] The technical scheme of the utility model is: a kind of liquid level control system of aluminium water flow groove, including stopper, still include liquid level detection mechanism, stopper control mechanism, the liquid level detection mechanism is reflective infrared liquid level sensor or laser liquid level meter, setting in the upper of aluminium water flow groove, the stopper control mechanism includes drive rod, drive motor, reset spring, the drive rod is L-shaped structure, the vertical section of drive rod is hinged in the side wall of aluminium water flow groove, the horizontal section of drive rod is located in the upper of aluminium water flow groove, and is connected with stopper, the drive motor is electrically connected with liquid level detection mechanism by central control room, drive motor is set in the lower of aluminium water flow groove, control arm is fixed on the output shaft of drive motor periphery, and one end of control arm is bent and the driving end of drive rod vertical section is contacted, one end of reset spring is fixed, and the other end is connected with the horizontal section of drive rod, so that drive rod vertical section has the tendency of rotating towards drive motor.

[0009] Handle section of the stopper is provided with a plurality of axial uniform distribution perforations, the horizontal section of drive rod is provided with hinged seat, handle section of the stopper is supported on hinged seat, and through hole shaft passes through the perforation on hinged seat and stopper handle section, and is hingedly connected.

[0010] The side wall of the aluminum liquid launder is provided with a limiting rod between the aluminum liquid launder and the vertical section of the driving rod.

[0011] The driving motor is fixedly provided with a guide groove extending in a circular arc shape, and the other end of the control arm is bent and gap-fitted in the guide groove.

[0012] The driving motor is a servo motor.

[0013] The driving motor is located on one side of the driving rod, and the reset spring is located on the other side of the driving rod, one end of the reset spring is connected to the side wall of the aluminum liquid launder, and the other end is connected to the horizontal section of the driving rod.

[0014] The above technical scheme has the following beneficial effects:

[0015] 1. The liquid level control system of the aluminum liquid launder comprises a stopper, and further comprises a liquid level detection mechanism and a stopper control mechanism, wherein the plug end of the stopper is used for inserting into the furnace bell mouth to control the aluminum liquid discharge of the furnace, the liquid level detection mechanism is used for detecting the liquid level height of the aluminum liquid in the aluminum liquid launder and calculating the change amount, and the stopper control mechanism is used for controlling the depth of the stopper inserted into the furnace bell mouth and adjusting the aluminum liquid discharge. The liquid level detection mechanism is a reflective infrared liquid level sensor or a laser liquid level meter, which is arranged above the aluminum liquid launder and can quickly and accurately detect the data of the liquid level and calculate the change of the liquid level. The stopper control mechanism comprises a driving rod, a driving motor and a reset spring. The driving rod has an L-shaped structure, the vertical section of the driving rod is hinged to the side wall of the aluminum liquid launder, and the horizontal section of the driving rod is located above the aluminum liquid launder and connected with the stopper, that is, when the vertical section of the driving rod rotates, the horizontal section of the driving rod moves forward and backward. The driving motor is electrically connected with the liquid level detection mechanism through the central control room and is used for controlling the forward rotation or reverse rotation and the rotation angle of the driving motor. The driving motor is arranged below the aluminum liquid launder, a control arm is fixedly arranged on the output shaft of the driving motor, one end of the control arm is bent and in contact with the driving end of the vertical section of the driving rod, one end of the reset spring is fixed, and the other end is connected with the horizontal section of the driving rod, so that the vertical section of the driving rod has a tendency to rotate towards the driving motor. When the driving motor receives an instruction and drives the bent section of the control arm to rotate towards the driving rod, the horizontal section of the driving rod is controlled to move horizontally, thereby controlling the stopper to move in the horizontal direction, and at the same time the reset spring is stretched. When the driving motor receives an instruction and drives the bent section of the control arm to rotate away from the driving rod, the driving rod is reversed under the action of the reset spring to keep in contact with the bent section of the control arm, the horizontal section of the driving rod is controlled to move reversely horizontally, thereby controlling the stopper to move reversely in the horizontal direction. By controlling the rotation angle of the driving motor, the insertion depth of the stopper can be quickly and accurately controlled to meet the production needs of enterprises.

[0016] 2. The handle section of the stopper rod is provided with a plurality of evenly distributed perforations along the axial direction, the horizontal section of the driving rod is provided with a hinged seat, the handle section of the stopper rod is supported on the hinged seat, and the through pin shaft passes through the hinged seat and the perforations on the handle section of the stopper rod to form a hinged connection, so that the insertion depth of the stopper rod in the furnace bell mouth can be pre-adjusted, the debugging difficulty is reduced, and the adaptability of the liquid level control system is improved.

[0017] 3. The side wall of the aluminum liquid runner is provided with a limiting rod between the aluminum liquid runner and the vertical section of the driving rod, so as to avoid the friction between the driving rod and the side wall of the aluminum liquid runner and reduce the rotation resistance of the driving rod.

[0018] 4. The driving motor is fixedly provided with a circular-arc-shaped guide groove, and the other end of the control arm is bent and gap-fitted in the guide groove, so that the guide groove can limit the rotation range of the driving motor and balance the control arm to ensure the control precision.

[0019] The application will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural schematic view of the application.

[0021] In the drawings, 1 is a stopper rod, 11 is a perforation, 2 is a liquid level detection mechanism, 3 is a stopper rod control mechanism, 31 is a driving rod, 32 is a driving motor, 33 is a return spring, 34 is a control arm, 35 is a hinged seat, 36 is a guide groove, and 4 is a limiting rod. DETAILED DESCRIPTION

[0022] Referring to Figure 1The utility model provides a specific embodiment of liquid level control system of aluminium liquid launder. Liquid level control system of aluminium liquid launder includes stopper 1, still includes liquid level detection mechanism 2, stopper control mechanism 3, wherein, stopper is the structure of the current general use. Liquid level detection mechanism 2 is reflective infrared liquid level sensor or laser liquid level meter, sets up in the upper of aluminium liquid launder, obviously, reflective infrared liquid level sensor or laser liquid level meter installs according to the stipulation of manufacturer. Stopper control mechanism 3 includes drive rod 31, drive motor 32, reset spring 33. Drive rod 31 is L-shaped structure, specifically, the vertical section, horizontal section of L-shaped drive rod are all square tubes, and the whole structure is formed by welding. The vertical section of drive rod 31 is hinged in the lateral wall of aluminium liquid launder, and the horizontal section of drive rod 31 is located in the upper of aluminium liquid launder and is connected with stopper 1, in the embodiment, a horizontally extending mounting block is welded on the lateral wall of aluminium liquid launder, the left end (towards the aluminium liquid flow direction) of the mounting block is provided with a notch, the vertical section of drive rod passes through the notch and is connected by hinge shaft. Drive motor 32 is electrically connected with liquid level detection mechanism 2 through the central control room. Drive motor 32 is arranged below the aluminium liquid launder and is located at the left side of the vertical section of drive rod, and servo motor is selected for the drive motor, so that the rotation angle of the output shaft of the drive motor can be accurately controlled. A control arm 34 is fixedly arranged on the output shaft of drive motor 32, one end of the control arm 34 is bent and in contact with the driving end of the vertical section of drive rod, in order to ensure the control accuracy, a guide groove 36 extending in arc shape is fixedly arranged on the drive motor 32, and the other end of the control arm 34 is bent and clearance-fitted in the guide groove. Reset spring 33 is located at the right side of the vertical section of drive rod, one end of the reset spring is connected to the lateral wall of the aluminium liquid launder to form a fixed connection, and the other end of the reset spring is connected to the horizontal section of the drive rod, so that the vertical section of the drive rod has a tendency to rotate towards the drive motor 32.

[0023] Further, in order to meet the needs, a plurality of axial uniform distribution perforations 11 are arranged on the handle section of the stopper 1, a hinge seat 35 is arranged on the horizontal section of the drive rod 31, the handle section of the stopper 1 is supported on the hinge seat 35, and the hinge seat and the handle section of the stopper are connected through the perforations.

[0024] Further, in order to reduce the rotation resistance of the drive rod, a limiting rod 4 is arranged on the lateral wall of the aluminium liquid launder between the aluminium liquid launder and the vertical section of the drive rod.

[0025] The working principle of the utility model is as follows:

[0026] The liquid level detecting mechanism detects the data of the liquid level quickly and accurately and calculates the change of the liquid level. When the liquid level is detected to be reduced and the flow of the molten aluminum needs to be increased, the control room sends a command to make the driving motor rotate anticlockwise by an angle, to make the bending section of the control arm rotate towards the driving rod, to make the horizontal section of the driving rod move horizontally to the left, to make the stopper move horizontally to the left (towards the flow direction of the molten aluminum), and to make the reset spring be stretched, so that the gap between the plug of the stopper and the furnace bell mouth is increased and the flow of the molten aluminum is increased. When the liquid level is detected to be increased and the flow of the molten aluminum needs to be reduced, the control room sends a command to make the driving motor rotate clockwise by an angle, to make the bending section of the control arm rotate away from the driving rod, to make the driving rod rotate reversely under the action of the reset spring and keep in contact with the bending section of the control arm, to make the horizontal section of the driving rod move horizontally to the right, to make the stopper move horizontally to the right, to make the gap between the plug of the stopper and the furnace bell mouth be reduced, and to make the flow of the molten aluminum be reduced. The production demand of the enterprise is met.

Claims

1. A level control system for an aluminium stream, comprising a stopper rod (1), characterised in that: It also includes liquid level detection mechanism (2), plug rod control mechanism (3), The liquid level detection mechanism (2) is a reflective infrared liquid level sensor or a laser liquid level meter, which is arranged above the aluminum liquid flow tank, The plug rod control mechanism (3) includes a driving rod (31), a driving motor (32), and a reset spring (33), The driving rod (31) is L-shaped, the vertical section of the driving rod (31) is hinged to the side wall of the aluminum liquid flow tank, the horizontal section of the driving rod (31) is located above the aluminum liquid flow tank and is connected with the plug rod (1), The driving motor (32) is electrically connected with the liquid level detection mechanism (2) through the central control room, the driving motor (32) is arranged below the aluminum liquid flow tank, a control arm (34) is fixedly arranged on the output shaft of the driving motor (32), one end of the control arm (34) is bent and in contact with the driving end of the vertical section of the driving rod, One end of the reset spring (33) is fixed, and the other end is connected with the horizontal section of the driving rod, so that the vertical section of the driving rod has a tendency to rotate towards the driving motor (32).

2. The level control system for an aluminum holding vessel as defined in claim 1 wherein: A plurality of axial uniform distribution perforations (11) are arranged on the handle section of the plug rod (1), a hinged seat (35) is arranged on the horizontal section of the driving rod (31), the handle section of the plug rod (1) is supported on the hinged seat (35), and the through pin shaft passes through the perforations on the hinged seat and the handle section of the plug rod, so as to be hingedly connected.

3. The level control system for an aluminum holding vessel as defined in claim 1 wherein: A limiting rod (4) is arranged on the side wall of the aluminum liquid flow tank between the aluminum liquid flow tank and the vertical section of the driving rod.

4. The level control system for an aluminum holding vessel as defined in claim 1 wherein: An arc-shaped guide groove (36) is fixedly arranged on the driving motor (32), the other end of the control arm (34) is bent and clearance fitted in the guide groove.

5. The level control system for an aluminum holding vessel as defined in claim 1 wherein: The driving motor (32) is a servo motor.

6. The level control system of an aluminum holding vessel according to claim 1, wherein: The driving motor (32) is located on one side of the driving rod (31), the reset spring (33) is located on the other side of the driving rod (31), one end of the reset spring (33) is connected to the side wall of the aluminum liquid flow tank, and the other end is connected with the horizontal section of the driving rod.

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