Device for controlling concentration of aluminum oxide in aluminum electrolysis cell

Abstract

The utility model provides a device for controlling the concentration of aluminum oxide in an aluminum electrolysis cell, and aims to solve the technical problem that the mode for controlling the concentration of aluminum oxide in the aluminum electrolysis cell has certain delay. The device comprises a square pipe, wherein a strip-shaped groove perpendicular to the square pipe is formed in each side face of the square pipe; the four cover plates are respectively arranged in the four strip-shaped grooves in a sliding manner; the slideway is arranged on the outer wall of the square pipe; the slide block is arranged in the slide way in a sliding manner, and a threaded hole is formed in the slide block; one end of the connecting rod is rotationally connected with the sliding block, and the other end is rotationally connected with one end of the cover plate outside the square tube; the screw rod is matched with the threaded hole in the sliding block, and the screw rod and the sliding way are arranged in parallel; the motor is arranged on the square pipe, and an output shaft of the motor is coaxially connected with one end of the screw rod; wherein each cover plate is provided with a sliding way, a sliding block and a connecting rod in a matched mode, and all the sliding blocks are connected into a whole. The device has the advantages that the amount of aluminum oxide entering the aluminum electrolysis cell is controlled, and the concentration of aluminum oxide in the aluminum electrolysis cell is rapidly and accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum, in particular to an aluminum oxide concentration control device in an aluminum electrolytic cell. Background Art

[0002] The electrolytic aluminum industry adopts the cryolite-alumina molten salt electrolysis method. Molten cryolite is the solvent, alumina is the solute, carbonite is the anode, and aluminum liquid is the cathode. After a strong direct current is passed through, an electrochemical reaction is carried out at the two electrodes in the electrolytic cell at 950℃-970℃.

[0003] According to the needs of the electrolysis process, the concentration of alumina in the aluminum electrolysis cell must be controlled. Alumina concentration is a crucial parameter in the aluminum electrolysis production process and plays a decisive role in the material balance and green and efficient production of the aluminum electrolysis cell.

[0004] In the prior art, the concentration of alumina in the aluminum electrolytic cell is controlled by controlling the speed of the feeding device and the feeding speed of the discharge device. However, such control methods all have certain delays. Utility Model Content

[0005] In view of the technical problem that in the prior art, the method of controlling the concentration of alumina in an aluminum electrolytic cell has a certain delay, the utility model provides a device for controlling the concentration of alumina in an aluminum electrolytic cell, which has the advantages of controlling the amount of alumina entering the aluminum electrolytic cell and achieving rapid and accurate control of the concentration of alumina in the aluminum electrolytic cell.

[0006] The technical solution of the utility model is:

[0007] A device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell, comprising:

[0008] A square tube, each side of which is provided with a strip groove perpendicular to the square tube, the length of the strip groove is equal to the width of the inner wall of the square tube, the two strip grooves on opposite sides of the square tube are located at the same height, and there is a height difference between the two strip grooves on adjacent sides of the square tube;

[0009] Four cover plates are slidably disposed in the four strip-shaped grooves respectively;

[0010] A slideway is provided on the outer wall of the square tube, and its length direction is perpendicular to the plate surface of the cover plate;

[0011] A slider is slidably disposed in the slideway, and the slider has a threaded hole;

[0012] A connecting rod, one end of which is rotatably connected to the slider, and the other end of which is rotatably connected to an end of the cover plate located outside the square tube;

[0013] A screw rod, matched with the threaded hole on the slider, and the screw rod is arranged parallel to the slideway;

[0014] A motor is arranged on the square tube, and an output shaft of the motor is coaxially connected to one end of the screw;

[0015] Wherein, each of the cover plates is matched with the slideway, the slider and the connecting rod, and all the sliders are connected as a whole.

[0016] Optionally, both sides of the slideway are provided with a through groove, the through groove is communicated with the interior of the slideway, and the side portions of all the sliding blocks are connected to each other via connecting pieces.

[0017] Optionally, two groups of the slideways, sliders and connecting rods are provided on each side of the square tube, and the two sliders on the same side of the square tube are connected to each other through a connecting plate, and the threaded holes are located on the connecting plate.

[0018] Optionally, the screw and the motor are provided on each side wall of the square tube, and all the motors move synchronously.

[0019] Optionally, the slideway, slider, connecting rod, screw rod and motor are symmetrically arranged at both ends of the square tube.

[0020] Optionally, the length of the cover plate is equal to the width of the inner wall of the square tube, and the width of the cover plate is greater than half of the width of the inner wall of the square tube.

[0021] Optionally, a flow guide is respectively provided on the four inner walls of the square tube, the flow guide is a triangular prism, and the flow guide is located above all the cover plates.

[0022] Optionally, the height difference between two of the strip grooves on adjacent sides of the square tube is equal to the thickness of a sheet of the cover plate.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The square tube is installed on the feed port of the aluminum electrolytic cell, and then the motor is controlled to drive the screw to rotate, so that the screw drives the slider to move on the slideway, and then the cover plate is driven to move in the strip groove through the connecting rod, so that the cover plate enters the square tube.

[0025] The four cover plates move simultaneously in the square tube, thereby changing the inner size of the square tube, thereby changing the amount of alumina entering the aluminum electrolytic cell. Since the amount of alumina entering the aluminum electrolytic cell is controlled at the feed port of the aluminum electrolytic cell in this technical solution, it has the characteristics of quickly and accurately controlling the concentration of alumina in the aluminum electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] Example:

[0033] See also Figure 1 and Figure 2 , an alumina concentration control device in an aluminum electrolytic cell, comprising a square tube 1, a cover plate 2, a slideway 3, a slider 4, a connecting rod 5, a screw 6 and a motor 7. Specifically, the cross section of the square tube 1 is a square structure, and a strip groove is respectively arranged on the four sides of the square tube 1, and the length direction of the strip groove is perpendicular to the length direction of the square tube 1.

[0034] The length of the strip groove is equal to the width of the inner wall of the square tube 1, the two strip grooves on the opposite sides of the square tube 1 are at the same height, and there is a height difference between the two strip grooves on the adjacent sides of the square tube 1, and the height difference is equal to the width of one strip groove. There are four cover plates 2, which are slidably arranged in the four strip grooves respectively, and the length of the cover plate 2 is equal to the length of the strip groove, the width of the cover plate 2 is greater than half the width of the inner wall of the square tube 1, and the height difference between the two strip grooves on the adjacent sides of the square tube 1 is also equal to the thickness of one cover plate 2.

[0035] A slideway 3 is respectively arranged on the four side walls outside the square tube 1 . The four slideways 3 are arranged parallel to each other, and the length directions of the four slideways 3 are arranged perpendicular to the plate surface of the cover plate 2 .

[0036] A slider 4 is slidably arranged in each slideway 3, and all sliders 4 can slide back and forth along the length direction of the slideway 3. A threaded hole is arranged on the slider 4, and a screw rod 6 is matched in the threaded hole. The length direction of the screw rod 6 is parallel to the length direction of the slideway 3, and one end of the screw rod 6 is coaxially connected to the output shaft of a motor 7.

[0037] The four sliders 4 located on the four side walls of the square tube 1 are connected as a whole, and each slider 4 is matched with a connecting rod 5, one end of the connecting rod 5 is rotatably connected to the slider 4, and the other end of the connecting rod 5 is rotatably connected to an end of the cover plate 2 located outside the square tube 1.

[0038] The working principle of this embodiment is to install the square tube 1 on the feed port of the aluminum electrolytic cell, and then control the motor 7 to drive the screw 6 to rotate, so that the screw 6 drives the slider 4 to move on the slide 3, and then drives the cover plate 2 to move in the strip groove through the connecting rod 5, so that the cover plate 2 enters the square tube 1.

[0039] The four cover plates 2 move simultaneously in the square tube 1, thereby changing the inner size of the square tube 1, thereby changing the amount of alumina entering the aluminum electrolytic cell. Since the technical solution controls the amount of alumina entering the aluminum electrolytic cell at the feed port, it has the characteristics of quickly and accurately controlling the concentration of alumina in the aluminum electrolytic cell.

[0040] In one specific embodiment:

[0041] Both sides of the slideway 3 are provided with through grooves 8 arranged along the length direction thereof, and the through grooves 8 are communicated with the interior of the slideway 3 , and a connecting member 9 passes through the through grooves 8 to connect all the sliders 4 into one.

[0042] Preferably, in order to enable the cover plate 2 to move smoothly inside the square tube 1, two slideways 3, two sliders 4 and two connecting rods 5 are symmetrically arranged on the same side of the square tube 1, and the two sliders 4 are connected to each other through a connecting plate 10. At the same time, the threaded hole is located in the middle of the connecting plate 10, so that the connecting plate 10 matches the screw 6. Generally, a screw 6 and a motor 7 are arranged on each side wall of the square tube 1, and each screw 6 matches each connecting plate 10 one by one.

[0043] In this embodiment, all the sliders 4 are connected to each other through the connecting plate 10 and the connecting member 9, so that all the sliders 4 can be ensured to be in the same motion state when moving.

[0044] In another specific embodiment:

[0045] In order to ensure that the forces on the top and bottom surfaces of the cover plate 2 are the same when the cover plate 2 moves in the strip groove, a slideway 3, a slider 4, a connecting rod 5, a screw 6 and a motor 7 are symmetrically provided at both ends of the square tube 1, so as to avoid the problem that the connecting rod 5 is stuck in the strip groove when driving the cover plate 2 to move.

[0046] In another specific embodiment:

[0047] A guide body 11 is provided on each of the four inner walls of the square tube 1. The guide body 11 is a triangular prism and is located above all the cover plates 2. The guide body 11 is provided to prevent aluminum oxide particles from entering the strip grooves, causing the cover plates 2 to get stuck with the strip grooves.

[0048] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell, characterized in that: include: A square tube, each side of which is provided with a strip groove perpendicular to the square tube, the length of the strip groove is equal to the width of the inner wall of the square tube, the two strip grooves on opposite sides of the square tube are located at the same height, and there is a height difference between the two strip grooves on adjacent sides of the square tube; Four cover plates are slidably disposed in the four strip-shaped grooves respectively; A slideway is provided on the outer wall of the square tube, and its length direction is perpendicular to the plate surface of the cover plate; A slider is slidably disposed in the slideway, and the slider has a threaded hole; A connecting rod, one end of which is rotatably connected to the slider, and the other end of which is rotatably connected to an end of the cover plate located outside the square tube; A screw rod matched with the threaded hole on the slider, and the screw rod is arranged parallel to the slideway; A motor is arranged on the square tube, and an output shaft of the motor is coaxially connected to one end of the screw; Wherein, each of the cover plates is matched with the slideway, the slider and the connecting rod, and all the sliders are connected as a whole.

2. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 1, characterized in that: The two sides of the slideway are provided with a through groove, the through groove is communicated with the interior of the slideway, and the side parts of all the sliding blocks are connected to each other through connecting pieces.

3. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 2, characterized in that: Two groups of the slideways, sliders and connecting rods are provided on each side of the square tube. The two sliders on the same side of the square tube are connected to each other through a connecting plate, and the threaded holes are located on the connecting plate.

4. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 3, characterized in that: The screw rod and the motor are arranged on each side wall of the square tube, and all the motors move synchronously.

5. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 4, characterized in that: The slideways, sliders, connecting rods, screw rods and motors are symmetrically arranged at both ends of the square tube.

6. The device for controlling alumina concentration in an aluminum electrolytic cell according to any one of claims 1 to 5, characterized in that: The length of the cover plate is equal to the width of the inner wall of the square tube, and the width of the cover plate is greater than half of the width of the inner wall of the square tube.

7. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 6, characterized in that: A flow guide is respectively provided on the four inner walls of the square tube, the flow guide is a triangular prism, and the flow guide is located above all the cover plates.

8. The device for controlling the concentration of aluminum oxide in an aluminum electrolytic cell according to claim 7, characterized in that: The height difference between two strip-shaped grooves on adjacent sides of the square tube is equal to the thickness of a cover plate.

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