JP6810799B2 - Electrolytic cathode assembly and electrolytic cell - Google Patents

Description

The present invention relates to the field of the chemical industry, specifically to an electrolytic cathode assembly and an electrolytic cell.

In the wet electrolytic zinc process, since the liquid level of the electrolytic solution fluctuates in the electrolytic tank, an irregular corrugated slope is formed on the upper part of the zinc sheet, and the zinc peeling blades are the zinc sheet and the cathode plate. It is difficult to insert between the zinc sheets, which is disadvantageous for peeling the zinc sheet. Therefore, in the modernized field of electrolytic zinc, a temporary peeling port is often installed on the electrolytic zinc cathode.

Currently, with the latest technology, the electrolytic zinc cathode mainly consists of an electrolytic zinc cathode, two equal length insulating edge clamping strips, and a temporary release sheet. The insulating edge clamping strip is heat-bonded to both edges of the electrolytic zinc cathode, a peeling port subsidence table is pre-processed on both the front and back sides at the waterline position of the cathode plate, and a temporary peeling sheet of insulation is poured into the peeling port. After electrolysis, there is no precipitation of zinc at the peeling port, or the amount of precipitation is small, a temporary peeling port is formed, and cutting and peeling are performed. The drawbacks of this structure are: (1) The temporary release sheet and the electrolytic zinc cathode are adhered by the adhesive force of two kinds of materials, the electrolytic operation environment is about 50 ° C, and the environment at the time of sheet release is about 25 ° C. Because of frequent alternating cold and heat, the temporary release sheet loosens or falls off, and is corroded by the strong acid in the tank, and electrolytic zinc enters the slit, making it difficult to remove the sheet (2). ) Since the temporary release sheet is fixed to the electrolytic zinc cathode and the temporary release sheet loosens, the release blade hits the aluminum cathode plate and the release blade is easily damaged. (3) It is necessary to process the cathode plate, and the cathode The manufacturing cost of the above is improved, and (4) the replacement process becomes complicated after the temporary release sheet is damaged.

As described above, there was room for improvement in the conventional electrolytic zinc cathode.

An object of the present invention is to solve at least one technical problem in the prior art. Therefore, one object of the present invention is to provide an electrolytic cathode assembly in which a temporary release port is formed in the cathode plate by a simple and reliable means, the cathode plate does not need to be modified, and the cathode plate can be easily replaced.

Therefore, according to one embodiment of the present invention, the present invention provides an electrolytic cathode assembly. According to an embodiment of the present invention, the electrolytic cathode assembly is located on a cathode plate, an edge-covering strip sealed on a side of the cathode plate, and one edge strip. Includes an insulating clamp that is sealed and sandwiched by the cathode plate.

According to the electrolytic cathode assembly according to the embodiment of the present invention, the insulating clamp is sandwiched between the cathode plates to seal the sandwiched portion, and when the electrolytic cathode assembly is electrolyzed in the tank body, the electrolytic solution is the insulating clamp. It does not enter the interior and prevents the electrolytic metal from coating the cathode. When peeling the electrolytic metal, an external force is applied to carry out the insulating jig, and the electrolytic metal forms a temporary peeling port on the head of the insulating jig, which makes it convenient to cut the peeling blade. Since the insulating clamp has a highly durable tightening force, it seals the sandwiching part of the cathode plate, effectively prevents the electrolytic metal from covering the cathode, and the insulating clamp and the cathode plate can be separated from each other. Yes, replacement is easy, there is no need to change the structure of the conventional cathode plate, mechanical processing of the cathode plate is not required, the production process is simplified, and the cost is saved.

In addition, the electrolytic cathode assembly according to the above-described embodiment of the present invention has the following additional technical features.

According to an embodiment of the present invention, the insulating clamp has an H shape, has a holding end, a connecting end, and a control end, and the connecting end is for connecting the holding end and the control end. The holding end can be opened around the connecting end. As a result, the insulating clamp effectively has a highly durable holding force and has a good sealing effect.

According to the embodiment of the present invention, the length of the insulating clamp is larger than 5 mm and less than 100 mm. As a result, the size of the formed peeling port is suitable.

According to the embodiment of the present invention, the sandwiching end is made of an elastic insulating anticorrosion material. As a result, the sealing effect is good and the service life is long.

According to the embodiment of the present invention, the length of the edge strip located under the insulating clamp is smaller than the length of the edge strip located on the opposite side. This makes it convenient to adjust the position of the insulating clamp in the electrolyte.

According to another aspect of the invention, the invention provides an electrolytic cell. According to the embodiment of the present invention, the electrolytic tank includes a tank body having an electrolytic solution accommodating space, an electrolytic anode assembly installed in the electrolytic solution, and the electrolytic cathode assembly installed in the electrolytic solution. , And a power source connected to the electrolytic anode assembly and the electrolytic cathode assembly, respectively.

According to the electrolytic tank according to the embodiment of the present invention, the electrolytic cathode assembly is sandwiched between the cathode plates by an insulating clamp to seal the sandwiched portion, and when the electrolytic cathode assembly is electrolyzed in the tank body, electrolysis is performed. The liquid does not enter the inside of the insulating clamp and prevents the electrolytic metal from coating the cathode. When peeling the electrolytic metal, an external force is applied to carry out the insulating jig, and the electrolytic metal forms a temporary peeling port on the head of the insulating jig, which makes it convenient to cut the peeling blade. Since the insulating clamp has a highly durable tightening force, it can seal the holding portion of the cathode plate, effectively prevent the electrolytic metal from covering the cathode, and can separate the insulating clamp and the cathode plate. The replacement is easy, the structure of the conventional cathode plate does not need to be changed, the mechanical processing of the cathode plate is not required, the production process is simplified, and the cost is saved.

According to an embodiment of the present invention, the bottoms of the two edge strips on both sides of the cathode plate are both sealed to the bottom of the cathode plate, and the tip of the edge strip under the insulating clamp is the electrolytic. It is located below the liquid level of the liquid, and the tip of the other edge strip is located above the liquid level of the electrolytic solution.

According to the embodiment of the present invention, the liquid level of the electrolytic solution is located at 1/4 to 2/3 from the lower end of the insulating clamp.

According to the embodiment of the present invention, the liquid level of the electrolytic solution is located at 1/3 to 1/2 from the lower end of the insulating clamp.

Additional features and advantages of the present invention may be shown in part in the following description and partly clarified by the following description or understood by practicing the present invention.

The above and / or additional features and advantages of the present invention will become apparent and easier to understand by describing the examples below with reference to the drawings.
It is a structural schematic diagram which shows the electrolytic cathode assembly which concerns on one Example of this invention. It is a partial structure schematic diagram which shows the electrolytic cathode assembly which concerns on one Example of this invention. It is a structural schematic diagram which shows the insulation clamp which concerns on one Example of this invention. It is a structural schematic diagram which shows the electrolytic cell which concerns on one Example of this invention.

Examples of the present invention will be described in detail below. An example of the above embodiment is shown in the drawings, but the same or similar reference numerals always represent homologous or similar parts, or parts having homologous or similar functions. The examples described below with reference to the drawings are exemplary and are used solely to interpret the invention and should not be understood as limiting the invention.

In the description of the present invention, "center", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientations or positional relationships indicated by terms such as "inside" and "outside" are used and designated to conveniently or briefly describe the present invention based on the orientations or positional relationships shown in the drawings. It should not be understood as a limitation to the present invention as it does not imply or imply that the device or component is in a particular orientation and is constructed and operated in a particular orientation.

According to one embodiment of the invention, the invention provides an electrolytic cathode assembly. According to an embodiment of the present invention with reference to FIG. 1, the electrolytic cathode assembly is described, the electrolytic cathode assembly 100 includes a cathode plate 10, an edge strip 20, and an insulating clamp 30. According to the embodiment of the present invention, the edge strip 20 is sealed on the side surface of the cathode plate 10. FIG. 2 shows a partial schematic of the AA cross section of the electrolytic cathode assembly, with reference to FIG. 2, according to an embodiment of the invention, the insulating clamp 30 is located on one edge strip 20. It is sealed and sandwiched on the cathode plate 20 to prevent the electrolytic solution from entering the inside of the insulating clamp and the electrolytic metal from covering the cathode when the electrolytic cathode assembly is electrolyzed in the tank body. When peeling the electrolytic metal, an external force is applied to carry out the insulating jig, and the electrolytic metal forms a temporary peeling port on the head of the insulating jig, which makes it convenient to cut and peel the peeling blade.

According to the electrolytic cathode assembly according to the embodiment of the present invention, the insulating clamp has a highly durable tightening force, seals the sandwiching portion of the cathode plate, and effectively covers the cathode with the electrolytic metal. In addition to preventing it, the insulating clamp and the cathode plate can be separated, facilitating replacement, and there is no need to change the structure of the conventional cathode plate, eliminating the need for mechanical processing of the cathode plate, simplifying the production process, and simplifying the production process. Save money.

With reference to FIG. 3, according to an embodiment of the present invention, the insulating clamp 30 exhibits an H shape and has a holding end 31, a connecting end 32 and a control end 33, and the connecting end 32 is a holding end 31 and a control. It is for connecting the ends 33, and the sandwiching end 31 can be opened around the connecting end 32. As a result, the sandwiching end of the insulating clamp is clamped by the cathode plate, the electrolytic solution is prevented from entering the inside of the insulating clamp, and the electrolytic metal is prevented from covering the cathode. The control end controls the size of the opening of the pinching end and the tightness of the pinching by the pinching end, ensuring that the insulating clamp effectively has a highly durable pinching force, and the pinching part of the insulating clamp is good. By providing a sealing effect, avoiding the ingress of the electrolytic solution, and preventing the electrolytic metal from covering the cathode plate at the site, a peeling port is formed and the electrolytic metal covered on the cathode plate is peeled off. It will be easier to do.

According to the embodiment of the present invention, the size of the insulating clamp can be adjusted according to the size of the cathode plate, and the size of the peeling port sandwiched and formed by the insulating clamp can be easily peeled off. good. According to some embodiments of the present invention, the length of the insulating clamp 30 is greater than 5 mm and less than 100 mm. As a result, the size of the peeling port formed by the insulating clamp is suitable, and the electrolytic metal can be easily peeled off. If the insulating clamp is too small, the peeling port formed will be too small and peeling will be difficult. If the insulating clamp is too large, not only the peeling port formed is too large and the electrolysis efficiency is reduced, but also the insulating clamp is too large and affects the installation of other members of the electrolytic cell.

According to the embodiment of the present invention, the sandwiching end 31 is made of an elastic insulating and anticorrosive material. Since the shape of the elastic material can be easily adjusted, it is convenient to clamp the sandwiching end of the insulating clamp on the cathode plate and remove the insulating clamp from the cathode plate after electrolysis is completed. Moreover, the sandwiching end of the insulating clamp has elasticity, the insulating clamp can be reused, and the electrolysis cost is reduced. In addition, the anticorrosive effect of the insulating clamp is good, the corrosive action of the electrolytic solution on the insulating clamp is reduced or avoided, and the service life of the insulating clamp is extended.

According to some examples of the present invention, the insulating clamp 30 may be integrally molded from an elastic insulating anticorrosive material. This makes it easier to produce insulated clamps, and the insulated clamps are stronger, more durable and less likely to break.

According to the embodiment of the present invention, the length of the edge strip 20 located under the insulating clamp 30 is shorter than the length of the edge strip 20 located on the opposite side. Since the metal layer is adsorbed on the surface of the cathode plate, the edge of the metal layer has a high degree of adhesion to the cathode plate, is difficult to cut, and is difficult to peel off. When the position of the insulating clamp is the position of the notch and the insulating clamp is located at the edge line of the metal layer, that is, the edge line is located between the upper and lower edges of the insulating clamp, the cutting is performed from diagonally above the metal layer. Mechanically, the fulcrum position at that angle is good, the urging force of the lever is large, and the metal layer is easily peeled off. In the process of electrolysis, the height of the electrolytic solution determines the position of the metal layer, and the length of the edge strip located under the insulating clamp is smaller than the length of the edge strip located on the opposite side. The level of the electrolyte is located just between the upper and lower edges of the insulating clamp, ensuring that the notch is diagonally above the metal layer and facilitating peeling of the metal layer.

According to another aspect of the invention, the invention provides an electrolytic cell. According to an embodiment of the present invention with reference to FIG. 4, an electrolytic cell is described, and the electrolytic cell 1000 includes a tank body 200, an electrolytic anode assembly 300, an electrolytic cathode assembly 100 described above, and a power supply 400. According to the embodiment of the present invention, the tank body 200 has an electrolytic solution accommodating space, the electrolytic anode assembly 300 and the electrolytic cathode assembly 100 are installed in the electrolytic solution, and the power supply 400 is the electrolytic anode assembly 300. Each was connected to an electrolytic cathode assembly 100.

According to the electrolytic tank according to the embodiment of the present invention, the electrolytic cathode assembly is sandwiched between the cathode plates by an insulating clamp to seal the sandwiched portion, and when the electrolytic cathode assembly is electrolyzed in the tank body, electrolysis is performed. The liquid does not enter the inside of the insulating clamp and prevents the electrolytic metal from coating the cathode. When peeling the electrolytic metal, an external force is applied to carry out the insulating jig, and the electrolytic metal forms a temporary peeling port on the head of the insulating jig, which makes it convenient to cut the peeling blade. Since the insulating clamp has a highly durable tightening force, it can seal the holding portion of the cathode plate, effectively prevent the electrolytic metal from covering the cathode, and can separate the insulating clamp and the cathode plate. The replacement is easy, the structure of the conventional cathode plate does not need to be changed, the mechanical processing of the cathode plate is not required, the production process is simplified, and the cost is saved.

According to the embodiment of the present invention, the bottoms of the two edge strips 20 on both sides of the cathode plate 10 are both sealed to the bottoms of the cathode plate 10, and the tip of the edge strip 20 under the insulating clamp 30 is electrolytic. It is located below the liquid level of the liquid, and the tip of the other edge strip 20 is located above the liquid level of the electrolytic solution. As described above, since the metal layer is adsorbed on the surface of the cathode plate, the edge of the metal layer has a high degree of adhesion to the cathode plate, is difficult to cut, and is difficult to peel off. When the position of the insulating clamp is the position of the notch and the insulating clamp is located at the edge line of the metal layer, that is, the edge line is located between the upper and lower edges of the insulating clamp, the cutting is performed from diagonally above the metal layer. Mechanically, the fulcrum position at that angle is good, the urging force of the lever is large, and the metal layer is easily peeled off. In the process of electrolysis, the height of the liquid level of the electrolytic solution determines the position of the metal layer, the tip of the edge strip located under the insulating clamp is located below the liquid level of the electrolytic solution, and the other edge strip is located. , Located on the electrolyte level, ensuring that the electrolyte level is just between the top and bottom edges of the insulating clamp and the notch is diagonally above the metal layer, peeling off the metal layer It will be easier.

According to the embodiment of the present invention, the liquid level of the electrolytic solution is located at 1/4 to 2/3 from the lower end of the insulating clamp. Since the liquid level of the electrolytic solution fluctuates, the liquid level line is always tilted, and by extension, the edge of the metal layer is also tilted, and the liquid level of the electrolytic solution is located 1/4 to 2/3 from the lower end of the insulating clamp. Ensure that the height of the metal layer is lower than the top edge of the insulating clamp.

According to a preferred embodiment of the present invention, the liquid level of the electrolytic solution is located at 1/3 to 1/2 from the lower end of the insulating clamp. After consideration, the inventor considers that when the cutting angle is 30 to 60 ° with respect to the horizontal, the fulcrum position, which is the contact point between the peeling sword and the cathode plate, is better, and the urging force of the lever is more. It was found that it was large and the metal layer was difficult to peel off. In addition, the inventor has conducted experiments and analytical calculations to determine that when the liquid level of the electrolytic solution is located 1/3 to 1/2 from the lower end of the insulating clamp, the vertical peeling port formed on the metal layer by the insulating clamp is vertical. It has been found that the height is suitable, the depth of cut is 30-60 ° with respect to the horizontal, the metal layer is more difficult to peel off, and the peeled metal layer is more complete.

In the description of the present invention, terms such as "one example", "partial example", "exemplary example", "concrete example", or "partial example" are referred to. The description means that the specific features, configurations, materials or features described in connection with the Examples or Examples are included in at least one Example or Example of the present invention. In the present specification, the exemplary description of the above terms does not necessarily indicate the same Example or Example. Also, the specific features, configurations, materials or features described may be adequately combined in any one or more embodiments or embodiments.

Although the examples of the present invention have been described above, it should not be understood that the above-mentioned examples are merely examples and are intended to limit the present invention. An ordinary person skilled in the art can modify, modify, replace, or modify the above embodiment within the scope of the present invention.

Cross-reference of related applications This application has patent application numbers submitted to the China National Intellectual Property Office on October 28, 2016, 201610970410.8 and 201621194703. It claims the priority and interests of the patent application that is X, and the entire contents of the Chinese patent application are incorporated herein by reference.

Claims (8)

Cathode plate and
An edge strip sealed on the side of the cathode plate and
With overlies the one edge strip, see containing and an insulating clamp is held sealed in the cathode plate,
The length of the edge strip located below the insulating clamp is smaller than the length of the edge strip located on the opposite side .
An electrolytic cathode assembly characterized by that. The insulating clamp has an H shape and has a holding end, a connecting end, and a control end. The connecting end is for connecting the holding end and the control end, and the holding end is It can be opened around the connection end.
The electrolytic cathode assembly according to claim 1. The length of the insulating clamp is greater than 5 mm and less than 100 mm.
The electrolytic cathode assembly according to claim 1. The sandwiching end is made of an elastic insulating and anticorrosive material.
2. The electrolytic cathode assembly according to claim 2 . A tank body with an electrolyte storage space and
With the electrolytic anode assembly installed in the electrolytic solution,
The electrolytic cathode assembly according to any one of claims 1 to 4 installed in the electrolytic solution.
Includes power supplies connected to the electrolytic anode assembly and the electrolytic cathode assembly, respectively.
An electrolytic cell characterized by this. The bottoms of the two edge strips on both sides of the cathode plate are both sealed to the bottom of the cathode plate, and the tip of the edge strip under the insulating clamp is located below the surface of the electrolyte. The tip of the other edge strip is located on the surface of the electrolyte.
The electrolytic cell according to claim 5 . The liquid level of the electrolytic solution is located 1/4 to 2/3 from the lower end of the insulating clamp.
The electrolytic cell according to claim 6 , wherein the electrolytic cell is characterized in that. The liquid level of the electrolytic solution is located 1/3 to 1/2 from the lower end of the insulating clamp.
The electrolytic cell according to claim 7 .

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