Auxiliary trepanning device for blanking point of aluminum electrolysis cell

Abstract

The utility model discloses an auxiliary trepanning device for a blanking point of an aluminum electrolysis cell, which comprises a crust breaking head positioning groove and a steel chisel, and a crust breaking head is positioned below a crust breaking telescopic cylinder; acting force is applied to the crust breaking head positioning groove through a crust breaking head of the crust breaking telescopic cylinder; the steel chisel is arranged at the bottom of the crust breaking head positioning groove; and the steel chisel is also provided with a handrail handle. When trepanning at a discharging point needs to be treated, an operator only needs to stand on the groove cover plate and place a trepanning drill rod at the discharging point to grasp the handrail with two hands, a shell head is hit into the drill rod positioning groove when the shell breaking air cylinder works, and the trepanning drill rod can penetrate through the shell surface, so that the working labor intensity of electrolysis workers is relieved; and the safety risks of falling damage and scalding caused by the existing trepanning mode for processing the blanking point are eliminated. According to the device, auxiliary trepanning of a discharging point is convenient and rapid, and trepanning of the discharging point can be completed without any additional manpower by means of the striking force of the crust breaking air cylinder and the crust breaking head; operators stand on the groove cover plate to operate safely and reliably.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum, in particular to an auxiliary hole opening device for a feeding point of an aluminum electrolytic cell. Background Art

[0002] The alumina consumed by the electrolytic cell in aluminum electrolysis production is automatically completed by the shelling cylinder and the feeder of the upper structure of the electrolytic cell through the control of the slot emptying machine. Whether the shelling and feeding are smooth directly affects the control of the electrolytic cell effect. The abnormal feeding of the electrolytic cell misjudged the normal program of the computer system and lost the normal control of the alumina concentration. The abnormal feeding indicates that the electrochemical reaction of alumina is slow and the current efficiency is low. The current efficiency is basically proportional to the number of feedings. The abnormal feeding affects the change of the cell voltage curve and the voltage deviation value is greater than the normal range. Low concentration causes frequent anode effects, which has a great impact on the DC power consumption per ton of aluminum. The computer judges the abnormal concentration, which leads to an increase in the number of feedings and an increase in the precipitation at the bottom of the furnace, resulting in a large resistance at the bottom of the furnace, resulting in a large cathode voltage drop. The abnormal feeding affects the electrolyte temperature and causes the electrolyte fluidity to deteriorate. Abnormal feeding, especially leakage, leads to a large shortage of the electrolytic cell. On the contrary, the long operation time of high concentration destroys the shape of the furnace side and the furnace chamber of the electrolytic cell, affecting the stability and current efficiency of the electrolytic cell.

[0003] At present, the opening of the material discharge point is mostly done manually, using a forging tool to hit the shell head to open the hole. Due to the large magnetic field in the electrolytic plant and the hard shell surface of the electrolytic cell, the iron forging tool is difficult to operate and the labor intensity of the workers is high. When people stand on the cell cover to work, there is a safety risk of falling and scalding. Utility Model Content

[0004] The utility model aims to provide an auxiliary hole opening device for a feeding point of an aluminum electrolytic cell, so as to solve the problem that the conventional auxiliary hole opening method for feeding point of an aluminum electrolytic cell has high labor intensity for employees and also has the safety risks of local falls and scalds.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides an auxiliary hole opening device for a feeding point of an aluminum electrolytic cell, comprising:

[0007] A shell breaking head positioning groove is located below the shell breaking telescopic cylinder; and a force is applied to the shell breaking head positioning groove by the shell breaking head of the shell breaking telescopic cylinder;

[0008] A steel chisel is arranged at the bottom of the shelling head positioning groove; and a handrail is also arranged on the steel chisel.

[0009] Furthermore, the inner diameter of the shelling head positioning groove is larger than the outer diameter of the shelling head;

[0010] The shell breaking telescopic cylinder is one of a pneumatic cylinder, an electric telescopic cylinder, and a hydraulic cylinder.

[0011] Furthermore, the steel chisel is vertically arranged at the bottom of the shelling head positioning groove.

[0012] Furthermore, a handrail is obliquely installed on the steel chisel.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] This application uses the principle of steel chisel piercing to reduce the labor used in drilling holes at the material discharge point. The operator only needs to stand on the slot cover, place the hole-drilling chisel at the material discharge point and hold the handrail with both hands. When the shell-breaking cylinder is working, the shell head hits the chisel positioning groove, and the hole-drilling chisel can penetrate the shell surface to ensure the safety of the operation; thereby reducing the labor intensity of the electrolytic workers; and eliminating the safety risks of falls and burns in the existing method of handling the hole-drilling at the material discharge point. The device is convenient and fast for auxiliary hole-drilling at the material discharge point. With the help of the striking force of the shell-breaking cylinder and the shell-breaking head, the hole-drilling at the material discharge point can be completed without any external manpower; the operator can operate safely and reliably while standing on the slot cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 The utility model is a schematic diagram of the auxiliary hole-opening device of the aluminum electrolytic cell feeding point at the feeding point.

[0017] Explanation of the accompanying reference numerals: 1. steel chisel; 2. shell-breaking head; 3. shell-breaking head positioning groove; 4. handrail handle. DETAILED DESCRIPTION

[0018] This embodiment discloses an auxiliary hole-opening device for a feed point of an aluminum electrolytic cell, comprising: a shell-breaking head positioning groove 3 and a steel chisel 1;

[0019] The shell breaking head positioning groove 3 is located below the shell breaking telescopic cylinder; and the shell breaking head 2 of the shell breaking telescopic cylinder applies a force to the shell breaking head positioning groove 3;

[0020] The steel chisel 1 is welded and fixed to the bottom of the shelling head positioning groove 3; a handrail 4 is also welded to the steel chisel 1.

[0021] The inner diameter of the shelling head positioning groove 3 is larger than the outer diameter of the shelling head 2, so that the shelling head 2 can accurately contact the inner bottom of the shelling head positioning groove 3; the shelling telescopic cylinder is one of an air cylinder, an electric telescopic cylinder, and a hydraulic cylinder; an air cylinder is preferred.

[0022] In this embodiment, the steel drill 1 is vertically installed at the bottom of the shelling head positioning groove 3, and a handrail 4 is obliquely installed on the steel drill 1, so that the drill can be operated by holding it at a distance.

[0023] The working principle of this embodiment:

[0024] Utilizing the principle of steel chisel piercing objects, a Φ25 pneumatic pick chisel is cut into a length of 250mm to serve as a hole-piercing chisel. The handle length of the hole-piercing device (obtained through calculation) is 2000mm to suit the use of operators. A handrail with a length of 150mm is made at the end of the handheld handle. A (100×150)mm shell head positioning groove is welded on the top of the hole-piercing chisel. The handheld handle is welded to the lower end of the hole-piercing chisel positioning groove. When processing the hole-piercing at the feeding point, the operator only needs to stand on the groove cover plate, place the hole-piercing chisel at the feeding point and hold the handrail with both hands. When the shell-piercing cylinder is working, the shell head hits in the chisel positioning groove, and the hole-piercing chisel can penetrate the shell surface. Shake the handle left and right to take out the hole-piercing device, and the alumina on the shell surface enters the groove. When the shell is struck again, the shell head can easily open the shell surface to complete the hole-piercing operation at the feeding point.

[0025] The principle of steel chisel piercing objects is used to reduce the labor used in drilling holes at the feeding point. The operator only needs to stand on the slot cover, place the hole-drilling chisel at the feeding point and hold the handrails with both hands. When the shell-drilling cylinder is working, the shell head will hit the chisel positioning groove, and the hole-drilling chisel can pierce through the shell surface to ensure safe operation.

[0026] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. An auxiliary hole opening device for a feeding point of an aluminum electrolytic cell, characterized in that: include: A shelling head positioning groove (3) is located below the shelling telescopic cylinder; A force is applied to the shell breaking head positioning groove (3) through the shell breaking head (2) of the shell breaking telescopic cylinder; A steel chisel (1) is arranged at the bottom of the shelling head positioning groove (3); a handrail (4) is also arranged on the steel chisel (1).

2. The auxiliary hole opening device for the feeding point of the aluminum electrolytic cell according to claim 1 is characterized in that: The inner diameter of the shelling head positioning groove (3) is larger than the outer diameter of the shelling head (2); The shell breaking telescopic cylinder is one of a pneumatic cylinder, an electric telescopic cylinder, and a hydraulic cylinder.

3. The auxiliary hole opening device for the feeding point of the aluminum electrolytic cell according to claim 1 is characterized in that: The steel chisel (1) is vertically arranged at the bottom of the shelling head positioning groove (3).

4. The auxiliary hole opening device for the feeding point of the aluminum electrolytic cell according to claim 3 is characterized in that: A handrail (4) is obliquely mounted on the steel chisel (1).

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