Feeding control structure of electrolytic bath

Abstract

A feeding control structure of an electrolytic cell comprises a plurality of crust breaking air cylinders, a plurality of discharging air cylinders, a villiaumite discharging air cylinder and an aluminum discharging crust breaking air cylinder and further comprises a plurality of air control two-position five-way valves, a plurality of two-position three-way valves and a compressed air pipe, one air control two-position five-way valve corresponds to one air cylinder and one two-position three-way valve, and the other air control two-position five-way valve corresponds to one air cylinder and one two-position three-way valve. Each air control two-position five-way valve is arranged beside the corresponding air cylinder, a control port of each two-position five-way valve is communicated with a port f of the corresponding two-position three-way valve, a port a is communicated with an upper cavity of the corresponding air cylinder, a port b is communicated with a lower cavity of the corresponding air cylinder, a port c is connected with a compressed air pipe in parallel, a port d and a port e are emptied outwards, a port g of each two-position three-way valve is connected with the compressed air pipe, and a port h is emptied outwards. The device is simple in structure, safe and reliable in control, small in fluctuation of punching and blanking on the electrolytic cell through single-point control, and capable of accurately controlling the concentration of raw materials and electrolyte areas in the electrolytic cell.

Description

Technical Field

[0001] The utility model relates to the field of electrolytic aluminum, in particular to an electrolytic cell feed control structure. Background Art

[0002] Aluminum electrolysis enterprises use electrolytic cells as electrolysis equipment, and use alumina powder as raw material to electrolyze aluminum liquid. During the electrolysis process, an electrolyte shell is formed on the surface of the aluminum liquid, and it is necessary to use a shelling cylinder to punch holes on time, and control the addition of raw materials into the electrolytic cell through a feeding cylinder.

[0003] At present, the electrolytic cell is equipped with 4 shelling cylinders, 1 aluminum shelling cylinder, 4 alumina powder feeding cylinders, and 1 aluminum fluoride powder feeding cylinder.

[0004] The four shelling cylinders are grouped into two cylinders and controlled in parallel by a two-position five-way air control solenoid valve. Two steel pipes are arranged from the air control box to the upper part of the tank where the shelling cylinders are installed. They are then connected to the shelling cylinders with soft insulating high-pressure hoses to realize the up and down air-controlled reversing action of the shelling cylinders.

[0005] The control connection of the alumina powder feeding cylinder is the same as that of the shelling cylinder.

[0006] The aluminum fluoride powder feeding cylinder uses a two-position five-way air control solenoid valve to independently control the up and down movement of the cylinder.

[0007] The air supply of the aluminum shelling cylinder is a steel pipe laid by the air control frame to the aluminum outlet end, and the manual reversing valve is used to control the up and down reversing action. As can be seen from the above, there are a total of 11 steel pipes on the tank for gas supply.

[0008] This arrangement has the following problems: 1. The gas consumption is relatively large. When the shelling cylinder and the material unloading cylinder are in operation, the steel pipes from the air control box to the cylinders are emptied and filled with compressed air; 2. The shelling and material unloading are both operated synchronously by the two cylinders, which causes large fluctuations in the aluminum liquid and electrolyte in the electrolytic cell; 3. When unloading, because the two cylinders are unloading at the same time, the concentration of alumina powder in the electrolyte and the concentration between electrolyte areas cannot be accurately controlled.

[0009] Therefore, how to design a control structure with low gas consumption and accurate material feeding control is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0010] The purpose of the utility model is to provide an electrolytic cell feeding control structure in view of the deficiencies in the prior art, which has a simple structure, safe and reliable control, and through single-point control, the fluctuation of punching and feeding on the electrolytic cell is small, and the concentration of raw materials and electrolyte areas in the electrolytic cell can be accurately controlled.

[0011] The technical scheme of the utility model is: an electrolytic cell feeding control structure, comprising a plurality of shelling cylinders, a plurality of unloading cylinders, a fluorine salt unloading cylinder, and an aluminum shelling cylinder, and also comprising a plurality of air-controlled two-position five-way valves, a plurality of two-position three-way valves, and a compressed air pipe, one air-controlled two-position five-way valve corresponds to one cylinder and one two-position three-way valve, each air-controlled two-position five-way valve is arranged beside the corresponding cylinder, the control port of each two-position five-way valve is communicated with the f port of the corresponding two-position three-way valve, the a port of each air-controlled two-position five-way valve is communicated with the upper cavity of the corresponding cylinder, the b port of each air-controlled two-position five-way valve is communicated with the lower cavity of the corresponding cylinder, the c port of each air-controlled two-position five-way valve is connected in parallel with the compressed air pipe, the d port and the e port of each air-controlled two-position five-way valve are emptied to the outside, the g port of each two-position three-way valve is connected to the compressed air pipe, and the h port of each two-position three-way valve is emptied to the outside.

[0012] One of the two-position three-way valves is a two-position three-way manual valve, which corresponds to the aluminum shelling cylinder, and the other two-position three-way valves are two-position three-way solenoid valves.

[0013] A plurality of two-position three-way solenoid valves are arranged in the gas control box, which is spaced apart from the electrolytic cell, and a two-position three-way manual valve is arranged beside the aluminum shelling cylinder.

[0014] A cut-off valve is provided between the g port of each two-position three-way valve and the compressed air pipe.

[0015] The two-position three-way valve is connected to the corresponding air-controlled two-position five-way valve through an insulating hose.

[0016] The gas-controlled two-position five-way valve is connected to the compressed air pipe through an insulating hose.

[0017] It also includes an exhaust muffler, and the d port and the e port of each gas-controlled two-position five-way valve are connected to the exhaust muffler.

[0018] The gas-controlled two-position five-way valve is connected to the exhaust muffler through an insulating hose.

[0019] The above technical solution has the following beneficial effects:

[0020] 1. The feeding control structure of the electrolytic cell includes several shelling cylinders, several unloading cylinders, fluorine salt unloading cylinders, and aluminum shelling cylinders. The positions of these cylinders can be arranged according to conventional designs. It also includes multiple air-controlled two-position five-way valves, multiple two-position three-way valves, and a compressed air pipe. One air-controlled two-position five-way valve corresponds to one cylinder and one two-position three-way valve. Each air-controlled two-position five-way valve is arranged next to the corresponding cylinder. The electromagnetic environment on the upper part of the electrolytic cell is complex. The use of air-controlled two-position five-way valves can avoid interference caused by the complex electromagnetic environment on the upper part of the electrolytic cell, and even prevent normal operation. The control port of each two-position five-way valve is connected to the f port of the corresponding two-position three-way valve, that is, the air-controlled two-position five-way valve is supplied or deflated through the two-position three-way valve to control the valve core movement of the air-controlled two-position five-way valve. The port a of each pneumatic two-position five-way valve is connected to the upper chamber of the corresponding cylinder to ventilate or release air to the upper chamber of the corresponding cylinder. The port b of each pneumatic two-position five-way valve is connected to the lower chamber of the corresponding cylinder to release or ventilate air to the lower chamber of the corresponding cylinder, so that the piston rod of the corresponding cylinder moves in the up and down direction to meet the needs of shelling or unloading. The port c of each pneumatic two-position five-way valve is connected in parallel with the compressed air pipe, that is, the compressed gas is ventilated to the upper chamber or lower chamber of the corresponding cylinder through the port c, port a or port b. Since only one compressed air pipe is set, the gas consumption of the compressed gas can be effectively reduced. The ports d and e of each pneumatic two-position five-way valve are emptied to the outside. The g port of each two-position three-way valve is connected to the compressed air pipe, and the h port of each two-position three-way valve is emptied to the outside. By controlling the valve core position of the two-position three-way valve, the corresponding air-controlled two-position five-way valve is exhausted or released, so as to achieve the purpose of remotely controlling the action of the two-position five-way valve. The air consumption of the five-way valve control is greatly reduced compared with the air consumption of the cylinder action, which can effectively reduce the gas consumption of compressed gas. In addition, the purpose of individually controlling the action of each cylinder is achieved, and the fluctuation of the electrolytic cell caused by drilling and feeding can be small, and the technical effect of accurately controlling the concentration of the raw material and electrolyte areas in the electrolytic cell can be achieved.

[0021] 2. One of the two-position three-way valves is a two-position three-way manual valve, which corresponds to the aluminum shelling cylinder. The other two-position three-way valves are two-position three-way solenoid valves. The two-position three-way valve corresponding to the aluminum shelling cylinder is a manual valve. The manual valve can adapt to working conditions with low frequency of use and can quickly control the action of the two-position five-way valve to meet the needs of discharging.

[0022] 3. The two-position three-way valve is connected to the corresponding pneumatic two-position five-way valve through an insulating hose, and the pneumatic two-position five-way valve is connected to the compressed air pipe through an insulating hose. The pneumatic two-position five-way valve is connected to the exhaust muffler through an insulating hose, which can effectively ensure safety and prevent electric shock accidents.

[0023] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a connection diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the connection between the unloading cylinder and the pneumatic two-position five-way valve of the utility model;

[0026] Figure 3 It is a connection diagram of the two-position three-way valve of the utility model.

[0027] In the attached drawings, 1 is a shelling cylinder, 2 is a feeding cylinder, 3 is a fluoride salt feeding cylinder, 4 is an aluminum shelling cylinder, 5 is a pneumatically controlled two-position five-way valve, 6 is a two-position three-way valve, 7 is a compressed air pipe, 8 is a cut-off valve, and 9 is an exhaust muffler. DETAILED DESCRIPTION

[0028] See also Figures 1 to 3 , which is a specific embodiment of an electrolytic cell feed control structure. The electrolytic cell feed control structure includes four shelling cylinders 1, four unloading cylinders 2, one fluorine salt unloading cylinder 3, and one aluminum shelling cylinder 4, and also includes ten air-controlled two-position five-way valves 5, ten two-position three-way valves 6, and a compressed air pipe 7, that is, one air-controlled two-position five-way valve 5 corresponds to one cylinder and one two-position three-way valve 6, and one of the two-position three-way valves is a two-position three-way manual valve, which corresponds to the aluminum shelling cylinder, and the remaining nine two-position three-way valves are two-position three-way solenoid valves, which are arranged in the air control box and have a spacing distance from the electrolytic cell, and the two-position three-way manual valve is arranged next to the aluminum shelling cylinder. Each air-controlled two-position five-way valve 5 is arranged next to the corresponding cylinder, and the length of the connecting pipeline between the five-way valve and the cylinder is shortened as much as possible. The control port of each two-position five-way valve is connected to the f port of the corresponding two-position three-way valve. In this embodiment, the two-position three-way valve is connected to the corresponding air-controlled two-position five-way valve through an insulating hose. The a port of each air-controlled two-position five-way valve is connected to the upper chamber of the corresponding cylinder, the b port of each air-controlled two-position five-way valve is connected to the lower chamber of the corresponding cylinder, and the c port of each air-controlled two-position five-way valve is connected in parallel with the compressed air pipe. Specifically, the air-controlled two-position five-way valve is connected to the compressed air pipe through an insulating hose. The d port and the e port of each air-controlled two-position five-way valve are emptied to the outside. Specifically, an exhaust muffler 9 is also provided. The d port and the e port of each air-controlled two-position five-way valve are connected to the exhaust muffler, and the air-controlled two-position five-way valve is connected to the exhaust muffler through an insulating hose. The g port of each two-position three-way valve is connected to the compressed air pipe. Specifically, a cut-off valve 8 is provided between the g port of each two-position three-way valve and the compressed air pipe. The h port of each two-position three-way valve is emptied to the outside.

[0029] The working principle of the utility model is: by controlling the valve core position of the two-position three-way valve (manual control or electromagnetic control), exhaust or release air to the corresponding air-controlled two-position five-way valve, so as to achieve the purpose of remotely controlling the action of the two-position five-way valve, so that the compressed air in the compressed air pipe enters the upper chamber or the lower chamber of the corresponding cylinder, and the purpose of individually controlling the action of each cylinder is realized, and the purposes of drilling, unloading and discharging can be realized.

Claims

1. An electrolytic cell feed control structure, comprising a plurality of shelling cylinders (1), a plurality of material discharge cylinders (2), a fluorine salt discharge cylinder (3), and an aluminum shelling cylinder (4), characterized in that: It also includes a plurality of gas-controlled two-position five-way valves (5), a plurality of two-position three-way valves (6), and a compressed air pipe (7). One pneumatically controlled two-position five-way valve (5) corresponds to one cylinder and one two-position three-way valve (6). Each gas-controlled two-position five-way valve (5) is arranged beside the corresponding cylinder, the control port of each two-position five-way valve is connected to the f port of the corresponding two-position three-way valve, the a port of each gas-controlled two-position five-way valve is connected to the upper cavity of the corresponding cylinder, the b port of each gas-controlled two-position five-way valve is connected to the lower cavity of the corresponding cylinder, the c port of each gas-controlled two-position five-way valve is connected in parallel with the compressed air pipe, and the d port and the e port of each gas-controlled two-position five-way valve are vented to the outside, The g port of each two-position three-way valve is connected to the compressed air pipe, and the h port of each two-position three-way valve is vented to the outside.

2. The electrolytic cell feed control structure according to claim 1, characterized in that: One of the two-position three-way valves is a two-position three-way manual valve, which corresponds to the aluminum shelling cylinder, and the other two-position three-way valves are two-position three-way solenoid valves.

3. The electrolytic cell feed control structure according to claim 2, characterized in that: A plurality of two-position three-way solenoid valves are arranged in the gas control box, which is spaced apart from the electrolytic cell, and a two-position three-way manual valve is arranged beside the aluminum shelling cylinder.

4. The electrolytic cell feed control structure according to claim 1, characterized in that: A cut-off valve (8) is provided between the g port of each two-position three-way valve and the compressed air pipe.

5. The electrolytic cell feed control structure according to claim 1, characterized in that: The two-position three-way valve is connected to the corresponding air-controlled two-position five-way valve through an insulating hose.

6. The electrolytic cell feed control structure according to claim 1, characterized in that: The gas-controlled two-position five-way valve is connected to the compressed air pipe through an insulating hose.

7. The electrolytic cell feed control structure according to claim 1, characterized in that: It also includes an exhaust muffler (9), and the d port and the e port of each gas-controlled two-position five-way valve are connected to the exhaust muffler.

8. The electrolytic cell feed control structure according to claim 7, characterized in that: The gas-controlled two-position five-way valve is connected to the exhaust muffler through an insulating hose.

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