Electrolyte level regulating device for copper electrolytic cell

Abstract

The present invention provides an electrolyte level regulating device for a copper electrolytic cell, which is not only convenient to adjust but also has stable liquid level control. The inner tube and the outer tube are in two position states: a low liquid level control position corresponding to a mutually meshed embedded state by the convex and concave parts in the up and down directions and a high liquid level control position corresponding to the misaligned matching. The upper tube end of the combined tube formed by the convex and concave parts between the inner tube and the outer tube is in a low position, thereby forming a low position of the liquid level control position. Correspondingly, when the convex and concave parts between the inner tube and the outer tube are misaligned, the upper tube end of the combined tube formed by the inner tube and the outer tube is in a high position, thereby forming a high position of the liquid level control position. The high and low liquid levels of the electrolytic cell are extremely convenient to adjust, and no matter whether it is a low liquid level control position or a high liquid level control position, there is no asymmetric external force acting in the circumferential direction of the inner tube and the outer tube, that is, the relative position of the inner tube and the outer tube in the circumferential direction is stable, so the control of the liquid level height of the present invention is also necessarily accurate.

Description

Background Art

[0001] In daily production, the electrolyte level of the copper electrolytic cell needs to be frequently and accurately regulated. If the liquid level deviates, it will cause the cathode copper height of the electrolytic cell group to deviate, making it difficult to strip in the stripping unit, and severe deviations will make it impossible to strip.

[0002] The document entitled "An electrolytic cell liquid level regulating device" (publication number CN 208829772 U, hereinafter referred to as Document 1) discloses a related technical solution: wherein, it includes a liquid level sleeve, and a regulating tube inserted and socketed on the inner side of the top of the liquid level sleeve, wherein the top of the liquid level sleeve and the top of the regulating tube are provided with stepped notches. The electrolytic cell liquid level regulating device is fixed and socketed on the return pipe of the electrolytic cell, and the regulating tube is removed to adjust the lowest liquid level of the electrolytic cell; the regulating tube is inserted and socketed on the liquid level sleeve, and the stepped notch of the regulating tube is aligned with the stepped notch of the liquid level sleeve in an axisymmetric manner to adjust the second liquid level of the electrolytic cell; by selecting a suitable notch arrangement and adaptation, multi-stage liquid level regulation can be obtained.

[0003] It can be seen from Figures 1, 2 and 3 of Document 1 that there is an annular step in the tube cavity of the liquid level sleeve, and the lower end of the regulating tube is seated on the annular step inside the liquid level sleeve, and no circumferential limit is set between the two. When the electrolyte enters the gap formed by the stepped gap of the regulating tube and the stepped gap of the liquid level sleeve, it has a certain swirl direction, so the opening of the drainage gap cannot be kept fixed, and of course the liquid level height to be maintained is difficult to maintain stable.

[0004] The document entitled “An electrolytic cell liquid level regulating device” (publication number CN 205856634 U, hereinafter referred to as Document 2) discloses a related technical solution: an electrolytic cell liquid level regulating device, which is composed of a liquid level regulating thick tube and a liquid level regulating thin tube. The circumferential surface of the top end of the liquid level regulating thin tube is provided with an annular boss, and the annular boss is made of elastic material to facilitate the liquid level regulating thick tube to be sleeved on the annular boss of the liquid level regulating thin tube and to fit closely with it. The outer circumferential surface between the bottom end and the top end of the annular boss is engraved with scales from small to large in the longitudinal direction, and the liquid level regulating thick tube moves up and down on it; the liquid level height is accurately adjusted according to the scale.

[0005] The problem with the above solution is that it is difficult to accurately adjust the liquid level height according to the scale, because the change in the liquid level height will inevitably make the scale difficult to identify, let alone accurate adjustment and control. Summary of the invention

[0006] The object of the present invention is to provide an electrolyte level regulating device for an electrolytic cell, which is not only convenient to regulate but also has stable liquid level control.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an electrolyte level regulating device for a copper electrolytic cell, comprising an inner tube and an outer tube that are inserted into each other, characterized in that the convex and concave parts between the inner tube and the outer tube in the upper and lower directions are in two position states: a low liquid level control position corresponding to a mutually meshing embedded state and a high liquid level control position corresponding to a misaligned fit.

[0008] In the above scheme, the upper tube end of the combined tube formed by the convex and concave parts between the inner tube and the outer tube is in a low position, thereby constituting the low position of the liquid level control position. Correspondingly, when the convex and concave parts between the inner tube and the outer tube are misaligned, the upper tube end of the combined tube formed by the inner tube and the outer tube is in a high position, thereby constituting the high position of the liquid level control position. It is very convenient to adjust the high and low liquid levels of the electrolytic cell, and no matter it is the low liquid level control position or the high liquid level control position, there is no asymmetric external force acting in the circumferential direction of the inner tube and the outer tube, that is to say, the relative position of the inner tube and the outer tube in the circumferential direction is stable, so the control of the liquid level height of the present invention must also be accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1a , 1b They are respectively the structural diagrams of the inner and outer tubes in the present invention;

[0010] Figure 2 , 3 4 and 5 are structural diagrams of the inner and outer tubes in the matching state of the present invention;

[0011] Figure 5 , 6 It is a structural schematic diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0012] The electrolyte level regulating device of the copper electrolytic cell comprises an inner tube (10) and an outer tube 20 which are mutually inserted and sleeved, and the inner tube 10 and the outer tube 20 are in two positions: a low liquid level control position corresponding to a mutually meshing embedded state and a high liquid level control position corresponding to a misaligned fit. The structure of the inner tube 10 and the outer tube 20 is shown in FIG. Figure 1a , 1b As shown, when the two are in the state of cooperation as shown in Figures 2, 3, and 4, the height of the combination formed by the inner tube 10 and the outer tube 20 is different in high and low positions, so the control and adjustment of the liquid level of the electrolyte in the electrolytic cell can be achieved. When the inner tube 10 and the outer tube 20 cooperate with each other, one of them is relatively fixed and the other is relatively movable. If the inner tube 10 is set to be fixed, the outer tube 20 can be manually rotated relative to the inner tube 10. In this case, when the outer tube 20 is in a high position, the height of its upper tube is higher than the upper end height of the inner tube 10. The so-called upper end height of the combined tube is actually the height of the upper end of the outer tube 20.

[0013] Example 1

[0014] As shown in the figure, as a preferred embodiment, there is an annular convex ring 11 on the outer wall below the upper end face of the inner tube 10, and there is a V-shaped recessed portion 111 opening upward on the annular convex ring 11. There is a V-shaped convex wedge portion 21 protruding downward on the lower end wall of the outer tube 20. The V-shaped convex wedge portion 21 and the V-shaped recessed portion 111 form a low liquid level control position corresponding to the mutually meshing embedded state, and the V-shaped convex wedge portion 21 and the annular convex ring 11 beside the V-shaped recessed portion 111 cooperate with the corresponding high liquid level control position.

[0015] When the above scheme is implemented, the inner tube 10 is fixed in the drainage channel at the end of the electrolytic cell, that is, in the overflow box of the electrolytic cell, and its height is fixed. The outer tube 20 controls the height of the liquid level.

[0016] In the specific implementation, it is preferred to select two CPVC pipes with a diameter, appropriate wall thickness, high temperature resistance, corrosion resistance, electrochemical corrosion resistance, and low expansion coefficient to make an inner pipe 20 with a length of 150mm. The inner diameter of the inner pipe is 50mm and the outer diameter is 63mm; the inner diameter of the outer pipe 20 is 64mm and the outer diameter is 74mm. The inner pipe 10 is added with a positioning ring, i.e., an annular convex ring 11, 30mm above the bottom of the pipe. The upper and lower heights of the annular convex ring 11 are 20mm, and the inner and outer diameters are 64mm and 74mm, respectively, and the length is 110mm. The annular convex ring 11 is arranged in the middle and lower section of the inner pipe 20 and installed at the overflow box position of the electrolytic cell. When adjusting the liquid level, lift and rotate the outer pipe 20 to increase the pipe height, and adjust the liquid level height. Combined with Figure 2 , 3 、4.

[0017] Example 2

[0018] Corresponding to Example 1, Figure 5 As shown, if the inner tube 10 and the outer tube 20 are kept in the matched state and arranged inverted, and the outer tube 20 is fixed accordingly, the height of the upper tube end of the inner tube 10 will change accordingly, and the effect of controlling and adjusting the liquid level height can also be achieved. Figure 5 The difference from the first embodiment is that the annular bead 11 has a V-shaped recess 111 opening downward, and the lower end wall of the outer tube 20 has a V-shaped convex wedge 21 protruding upward.

[0019] As a preferred solution, the V-shaped convex wedge portion 21 and the V-shaped concave portion 111 are arranged in two groups symmetrically in the circumferential direction, which can improve the stability of the fit.

[0020] When implementing Figure 5As shown, in the mutually meshing embedded state formed by the V-shaped convex wedge portion 21 and the V-shaped concave portion 111, the height of the upper end of the inner tube 10 is higher than the height of the upper end of the outer tube 20, and when the V-shaped convex wedge portion 21 and the V-shaped concave portion 111 are misaligned with each other, the height of the upper end of the inner tube 10 is still higher than the height of the upper end of the outer tube 20. It can be seen that in this embodiment, the height of the upper end of the inner tube 10 is the liquid level control position.

[0021] Example 3

[0022] like Figure 6 As shown, a wedge-shaped protrusion 12 which is smaller at the top and larger at the bottom is provided on the outer wall of the inner tube 10, and a wedge-shaped recess 22 which is concave upwards is provided on the end surface of the lower tube wall of the outer tube 20.

[0023] The advantages of this embodiment are that it is easy to process and saves materials, that is, a wedge block portion is cut off from the end face of the lower tube wall of the outer tube 20 to form an upwardly concave wedge-shaped recess 22, and the cut wedge block portion is fixedly set on the outer wall of the inner tube 10 as a wedge-shaped protrusion 12.

[0024] Figure 6 Liquid level control can also be achieved when the structure shown is inverted, as described in Example 2. In this case, the inner tube 10 is a liquid level control tube.

[0025] The present invention solves the problem that the liquid level cannot be accurately controlled, and prevents the occurrence of problems such as difficult or impossible stripping of cathode copper; improves the liquid level adjustment efficiency and reduces the workload of operators. The liquid level adjustment time of a single group of 18 electrolytic cells is reduced from 30 minutes to 2 to 3 minutes. The liquid level of 8 groups needs to be adjusted every day, which can save 3.7 working hours every day.

Claims

1. An electrolyte level regulating device for a copper electrolytic cell, comprising an inner tube (10) and an outer tube (20) which are mutually inserted and sleeved, characterized in that: The inner tube (10) and the outer tube (20) are provided with two position states, namely, a low liquid level control position corresponding to a mutually meshing embedded state and a high liquid level control position corresponding to a misaligned fit, by means of the convex and concave parts in the upper and lower directions. An annular convex ring (11) is provided on the outer wall below the upper end surface of the inner tube (10), and a V-shaped concave portion (111) opening upward is provided on the annular convex ring (11). A V-shaped convex wedge portion (21) protruding downward is provided on the tube wall at the lower end of the outer tube (20). The V-shaped convex wedge portion (21) and the V-shaped concave portion (111) form a low liquid level control position corresponding to a mutually meshing embedded state, and the annular convex ring (11) beside the V-shaped convex wedge portion (21) and the V-shaped concave portion (111) cooperate to form a high liquid level control position.

2. The electrolyte level regulating device for a copper electrolytic cell according to claim 1, characterized in that: The V-shaped convex wedge portion (21) and the V-shaped concave portion (111) are arranged in two groups symmetrically in the circumferential direction.

3. The electrolyte level regulating device for a copper electrolytic cell according to claim 1, characterized in that: In the embedded state where the V-shaped convex wedge portion (21) and the V-shaped concave portion (111) are meshed with each other, the height of the upper end of the inner tube (10) is lower than the height of the upper end of the outer tube (20).

4. The electrolyte level regulating device for a copper electrolytic cell according to claim 1, characterized in that: The outer wall of the inner tube (10) is provided with a wedge-shaped protrusion (12) which is smaller at the top and larger at the bottom, and the end surface of the lower tube wall of the outer tube (20) is provided with a wedge-shaped recess (22) which is concave upwards.

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