Scraper type electrolytic copper powder production device and production process

Abstract

The invention discloses a scraper type electrolytic copper powder production device and a production process, and relates to the technical field of electrolysis equipment.The scraper type electrolytic copper powder production device comprises an electrolytic bath, the electrolytic bath is filled with electrolyte, the top of the electrolytic bath is connected with a top cover and a side cover which are arranged side by side through a hinge, and a conveying device is installed in the electrolytic bath; the side cover is located at the top of one side of the conveying device, an air inlet hole is formed in the top of the inner wall of the electrolytic bath, and an exhaust pipe communicated with the air inlet hole is connected to the outer wall of the electrolytic bath. According to the scraper type electrolytic copper powder production device and process, internal electrolyte can be protected, meanwhile, harmful gas generated by the electrolyte can be prevented from leaking out, the influence of sulfides in the gas on the environment and personnel is reduced, the sulfides can be conveyed in a separated mode, and the production efficiency is improved. The condition that hydrogen and oxygen are mixed is avoided, and the potential explosion risk is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolysis equipment, and more specifically, to a scraper-type electrolytic copper powder production device and production process. Background Art

[0002] Due to its excellent electrical and thermal conductivity, good corrosion resistance, and unique non-magnetic property, copper powder exhibits extensive application potential in multiple fields, such as industries like conductive and thermal conductive materials, friction materials, electrical contact materials, diamond tool materials, oil-impregnated bearings, and electro-carbon products. Among the numerous preparation processes of copper powder, the reduction method, atomization method, and electrolysis method are the main ones. Among them, electrolytic copper powder occupies a core position in the production of high-speed rail brake pads, conductive pastes, and electro-carbon products due to its high purity, excellent formability, and unique dendritic structure, and has become the main raw material for these products. The quality of electrolytic copper powder directly affects the quality of the final product and becomes a decisive factor.

[0003] During the electrolysis process, copper ions in the electrolyte gain electrons on the cathode plate and are reduced to copper powder, which precipitates on the cathode plate. To prevent the precipitated copper powder from affecting the subsequent electrolysis process, the copper powder on the cathode plate is usually collected by scraping. For example, the Chinese patent with the application number 202110898981.6 discloses an automatic copper powder scraping device for electrolytic copper powder. The structure includes a lifting mechanism, the cathode plate is arranged on the lifting mechanism, and the lifting mechanism is used to drive the cathode plate to rise from the electrolytic cell; a powder scraping mechanism, the powder scraping mechanism includes multiple groups of powder scraping components, and each group of powder scraping components includes two scraping parts arranged parallel to each other and at intervals; among them, the powder scraping mechanism further includes a moving component, the powder scraping components are installed on the moving component, and the moving component enables the powder scraping components to horizontally move to the lower side of the cathode plate, and the lifting mechanism drives the cathode plate to move downward and pass through the gap between each group of scraping parts. This automatic copper powder scraping device for electrolytic copper powder still has the following problems in daily production and use:

[0004] 1. During the use of the electrolyte, hydrogen and oxygen are generated. Since hydrogen is flammable and oxygen can support combustion, the mixture of the two has an explosion risk, increasing the danger. At the same time, when the anode material contains other impurities or the electrolyte contains other solutions, sulfides will be produced. The produced sulfides will not only affect personnel but also the environment and equipment.

[0005] 2. When scraping the copper powder on the cathode plate, due to the two-way scraping, the copper powder has a large scattered area when it falls on the bottom conveyor device, which is not convenient for the transportation of the copper powder. At the same time, when the copper powder is carried out of the electrolytic cell by the transportation equipment, a large amount of electrolyte will adhere to the copper powder. As the electrolyte moves, it not only affects the use of the electrolyte in the electrolytic cell, but also affects the subsequent drying step of the copper powder.

[0006] Therefore, it is necessary to propose a scraper-type electrolytic copper powder production device and production process to solve the above problems. Summary of the Invention

[0007] In view of the above situation, in order to overcome the deficiencies of the prior art, the present invention provides a scraper-type electrolytic copper powder production device and production process to solve the problems raised in the above background technology.

[0008] The technical solution it adopts is that the present invention includes an electrolytic cell filled with electrolyte. The top of the electrolytic cell is connected with a top cover and a side cover arranged side by side through hinges. A conveying device is installed inside the electrolytic cell. The side cover is located at the top of one side of the conveying device. An air inlet hole is opened at the top of the inner wall of the electrolytic cell, and an exhaust pipe communicated with the air inlet hole is connected to the outer wall of the electrolytic cell;

[0009] A workbench is arranged outside the electrolytic cell. A vacuum pump is installed on the top surface of the workbench, and a filtering device and a heat exchange device are installed on the bottom surface of the workbench. The exhaust pipe is connected in series with the vacuum pump, the filtering device and the heat exchange device through a pipeline in sequence;

[0010] An air flow stirring pipe is connected to the inner wall of the electrolytic cell. Air outlet holes are opened on the outer ring surface of the air flow stirring pipe. A return pipe communicated with the air flow stirring pipe is connected to the outer wall of the electrolytic cell. The return pipe is connected to the output end of the heat exchange device. A one-way valve is connected to one end of the air flow stirring pipe close to the return pipe;

[0011] An exhaust pipe is connected to the top of the top cover and is connected to an external hydrogen recovery pipe.

[0012] Overflow tanks are connected to the inner wall of the electrolytic cell at equal intervals. Overflow holes are opened on both sides of the overflow tanks. A diversion frame is connected to the top of the outer wall of the electrolytic cell. The diversion frame is inclined. Holes extending into the diversion frame are opened at both ends of the overflow tank. The exhaust pipe is located at the top end inside the diversion frame. The diversion frame is connected to a waste liquid pipe through a flange.

[0013] A reinforcing plate is connected to the bottom of the overflow trough, the airflow stirring tube is connected to the bottom of the reinforcing plate, a liquid outlet pipe is connected to the interior of the reinforcing plate, a liquid inlet pipe is connected to the outer wall of the electrolytic cell away from the reflux pipe, the liquid inlet pipe is connected to an external electrolyte supply device, liquid outlet holes are provided at both ends of the liquid outlet pipe, and the liquid outlet pipe is located at the top of the airflow stirring tube.

[0014] The top of the electrolytic cell is connected to a support plate, the top of the overflow tank is connected to a conductive copper bar, the top of the conductive copper bar is connected to a cross plate, both ends of the cross plate are connected to the top of the support plate, titanium blue is arranged between two adjacent cross plates, an anode plate is placed in the titanium blue, and the top of the cross plate is connected to a fixed platform for placing the titanium blue.

[0015] Support parts are arranged on both sides of the top of the titanium blue, a guide plate is connected to the bottom of the support part, and a clamping part for accommodating the insertion of the guide plate is provided at the bottom of the fixing platform;

[0016] The two ends of the top of the anode plate are connected with extension parts, the extension parts are located on the top of the support part, and the side of the support part away from the guide plate is symmetrically connected with elastic clamps, and the anode plate is located between the symmetrical elastic clamps.

[0017] A cathode plate is provided between two adjacent titanium blues, and both ends of the cathode plate are fixed to the cross plate by bolts, the top of the support plate is connected to a roller frame, the top of the roller frame is slidably connected to a movable frame, a rib plate is provided on the movable frame, symmetrical scrapers are provided on both sides of the rib plate, symmetrical strip grooves are provided on the top of the scraper, fixing rods passing through the strip grooves are provided on both sides of the rib plate, nuts are threadedly connected to the ends of the fixing rods, springs are symmetrically sleeved on the fixing rods, and the two springs are staggered to make the scrapers inclined, a baffle is connected to the top of the rib plate, the bottom of the baffle is in contact with the top of the scraper, and one side of the scraper is in contact with both sides of the cathode plate.

[0018] The end of the movable frame close to the workbench is connected to a sliding rod extending from the guide frame, and a driving motor is connected to the top surface of the workbench. The output end of the driving motor is connected to the sliding rod through a double connecting rod. The driving motor drives the movable frame to move horizontally on the roller frame, and one side of the guide frame is connected to a sliding sleeve through which the sliding rod passes.

[0019] An air blowing device is connected to one end of the electrolytic cell close to the side cover, and the air blowing device is arranged in parallel with one end of the conveying device. A three-way valve is connected between the filtering device and the heat exchange device, and the other end of the three-way valve is connected to the air blowing device through a pipeline.

[0020] One end of the electrolytic cell away from the workbench is connected with a bench and an observation tank. A driving motor connected to the conveying device is installed inside the bench. A receiving box is installed on the other side of the bench. A receiving plate extending into the receiving box is connected to the inner wall of the electrolytic cell. An observation window is connected to the top of the observation tank. An inclined plate extending into the electrolytic cell is connected to the bottom of the observation tank, and the inclined plate is inclined towards the observation tank.

[0021] Observation windows are installed on the top cover and the side cover.

[0022] The production process of scraping type electrolytic copper powder includes the following steps:

[0023] S1. Installation: First, open the top cover on the top of the electrolytic cell, take out multiple titanium baskets in the electrolyte, place the anode plate in the titanium basket, then place the titanium basket in the electrolytic cell, and position the titanium basket by inserting the guide plate into the clamping part.

[0024] S2. Copper powder scraping: Cover the electrolytic cell with it through the buckle on the top cover, and sequentially start the power supply device, the conveying device and the driving motor of the electrolytic cell. The power supply device of the electrolytic cell causes an electrolytic reaction inside the electrolytic cell. The conveying device drives the moving frame to move through the double connecting rods. The moving frame drives the scraper above to scrape off the copper powder generated on the surface of the cathode plate. The scraped copper powder falls on the conveying device at the bottom and is discharged from the other end by the conveying device.

[0025] S3. Air filtration: Start the vacuum pump. The vacuum pump conveys the gas generated in the electrolytic cell to the filtration device through a pipeline. The gas is filtered and cooled by the filtration device and the heat exchange device in sequence and then conveyed back into the electrolytic cell, which plays a role in stirring the electrolyte. Part of the air flow is discharged from the blowing device, which plays a role in blowing the electrolyte attached to the copper powder transported by the conveying device. The impurities on the top of the electrolyte will flow out from the overflow tank, and the new electrolyte will enter the electrolytic cell from the liquid outlet pipe.

[0026] S4. Cleaning: When impurities precipitate are observed inside through the observation window on the top of the observation tank, open the top cover and the side cover, empty the electrolyte inside, then disassemble the conveying device, and then clean the impurities in the electrolytic cell.

[0027] Adopting the technical solution provided by the present invention, compared with the existing well-known technologies, it has the following remarkable effects:

[0028] 1. Through the coordinated setting of the top cover, the exhaust pipe and the exhaust pipe on the electrolytic cell, it can not only protect the internal electrolyte, but also prevent the leakage of harmful gases generated by the electrolyte, reduce the impact of sulfides in the gas on the environment and personnel, and can also convey them separately to avoid the mixing of hydrogen and oxygen, thus avoiding the potential explosion hazard.

[0029] 2. The device is provided with a filtering device and a heat exchange device on the exhaust duct, which can filter sulfides from the extracted gas, reduce the temperature of oxygen at the same time, and transport it into the electrolyte. Introducing oxygen into the electrolyte helps control impurities in the electrolyte, improve the purity of copper products, accelerate the copper oxidation process on the anode, promote copper dissolution, and thus increase the copper extraction rate.

[0030] 3. The device is provided with a blowing device on the top of the conveying device. The blown oxygen can push the electrolyte attached to the copper powder to move along the surface of the conveying device towards the lower end, so as to return to the electrolyte, achieving the effect of reducing the attachment of the electrolyte. At the same time, it can pre-dry the copper powder and improve the effect of subsequent drying of the copper powder.

[0031] 4. By setting an inclined scraper on the moving frame, the scraped copper powder can fall at the same position, which has the effect of reducing the scattering area of the copper powder, facilitating the transportation of the copper powder by the conveying device, and avoiding the situation where the copper powder spills outside the conveying device. Brief Description of the Drawings

[0032] Figure 1 is a schematic diagram of the structure of the present invention;

[0033] Figure 2 is a cross-sectional view of the structure of the present invention;

[0034] Figure 3 is a schematic diagram of the structure of the diversion frame and the sliding sleeve in the present invention;

[0035] Figure 4 is a schematic diagram of the structure of the air flow stirring tube and the reinforcing plate in the present invention;

[0036] Figure 5 is a three-dimensional schematic diagram of the structure of the rib plate and the scraper in the present invention;

[0037] Figure 6 is a three-dimensional schematic diagram of the structure of the titanium blue and the anode plate in the present invention;

[0038] Figure 7 is a schematic diagram of the structure of the conveying device and the blowing device in the present invention;

[0039] Figure 8 is a schematic diagram of the structure of the filtering device and the heat exchange device in the present invention.

[0040] Reference Signs:

[0041] 101. Electrolytic cell; 102. Top cover; 103. Side cover; 104. Conveyor device; 105. Air inlet hole; 106. Exhaust duct; 107. Workbench; 108. Vacuum pump; 109. Filter device; 110. Heat exchange device; 111. Air flow stirring pipe; 112. Return pipe; 113. Overflow tank; 114. Guide frame; 115. Reinforcing plate; 116. Liquid outlet pipe; 117. Liquid inlet pipe; 118. Support plate; 119. Conductive copper bar; 120. Horizontal plate; 121. Titanium basket; 122. Anode plate; 123. Fixed platform; 124. Support part; 125. Guide plate; 126. Clamping part; 127. Extension part; 128. Elastic snap ring; 129. Cathode plate; 130. Roller frame; 131. Moving frame; 132. Rib plate; 133. Scraper; 134. Strip groove; 135. Fixed rod; 136. Spring; 137. Baffle; 138. Sliding rod; 139. Driving motor; 140. Sliding sleeve; 141. Blowing device; 142. Three-way valve; 143. Bench; 144. Observation tank; 145. Material receiving box; 146. Material receiving plate; 147. Inclined plate; 148. Exhaust duct. Detailed implementation manners

[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0043] By Figures 1 to 8Provided below is a structure capable of filtering the gas generated by the electrolyte: It includes an electrolytic cell 101 filled with electrolyte. The top of the electrolytic cell 101 is hinged with a top cover 102 and a side cover 103 arranged side by side. The top cover 102 and the side cover 103 can cover the top of the electrolytic cell 101 to prevent the gas generated by the internal electrolyte from escaping. An air inlet hole 105 is provided at the top of the electrolytic cell 101. Through a vacuum pump 108, the generated gas can be transported to a filtering device 109, thereby filtering out impurities such as sulfides in the oxygen in the gas. A conveying device 104 is installed inside the electrolytic cell 101. The conveying device 104 is a conveyor belt with good corrosion resistance. The side cover 103 is located at the top of one side of the conveying device 104. An air inlet hole 105 is opened at the top inner wall of the electrolytic cell 101. The air inlet hole 105 is connected to the vacuum pump 108 through an exhaust pipe 106. The position of the air inlet hole 105 is higher than the liquid level. At the same time, anode plates 122 are provided on both sides of the electrolytic cell 101. The anode plates 122 generate oxygen and sulfides, which can smoothly enter the air inlet hole 105. The oxygen and sulfides generated by the anode plates 122 in the middle position are heavier than hydrogen, so they will be located at the bottom of hydrogen and then enter the air inlet hole 105. An exhaust pipe 106 communicating with the air inlet hole 105 is connected to the outer wall of the electrolytic cell 101. The electrolyte will generate hydrogen, oxygen and sulfides. Hydrogen is lighter and will move upward and be discharged from the exhaust duct 148, while sulfides and oxygen are heavier and will be discharged from the air inlet holes 105 on both sides of the electrolytic cell 101, and then enter the electrolyte after passing through the filtering device 109 and the heat exchange device 110 in sequence;

[0044] The air extracted by the vacuum pump 108 contains oxygen and sulfides. Provided below is a structure capable of filtering sulfides in oxygen: Refer to Figures 1 to 3 , a workbench 107 is provided outside the electrolytic cell 101. A vacuum pump 108 is installed on the top surface of the workbench 107. The workbench 107 has two upper and lower layers. The upper layer is used to place the vacuum pump 108 and the drive motor 139, and the lower layer is used to place the heat exchange device 110 and the filtering device 109. The filtering device 109 is installed inside the workbench 107 and the heat exchange device 110. An activated carbon filter layer is installed inside the filtering device 109 to filter sulfides in oxygen. The internal heat exchange of the heat exchange device 110 is carried out by means of water cooling to cool the filtered gas. The cooled gas will be discharged into the electrolyte, which can not only stir the electrolyte but also play a role in cooling. A small amount of oxygen will be transported into the electrolyte, and most of the electrolyte will be transported to the blowing device 141. The exhaust pipe 106 is connected in series with the vacuum pump 108, the filtering device 109 and the heat exchange device 110 through pipes. It should be noted that when the vacuum pump 108 extracts oxygen and sulfides, a small amount of hydrogen will be extracted, but it does not affect normal use;

[0045] The following provides a structure for recycling the filtered gas: Refer to Figure 4 , an air flow stirring pipe 111 is connected to the inner wall of the electrolytic cell 101. Air outlet holes are provided on the outer ring surface of the air flow stirring pipe 111. A return pipe 112 connected to the air flow stirring pipe 111 is connected to the outer wall of the electrolytic cell 101. The return pipe 112 is connected to the output end of the heat exchange device 110. The gas cooled by the heat exchange device 110 is discharged back into the electrolyte through the air flow stirring pipe 111, which plays a role in stirring and cooling the electrolyte. Since heat is generated during the electrolysis process and the heat will affect the electrolysis, a check valve is connected to one end of the air flow stirring pipe 111 close to the return pipe 112. The air flow stirring pipe 111 is located at the bottom of the liquid outlet pipe 116. The ejected gas can stir the surrounding electrolyte. At the same time, during the upward movement of the gas, it will impact the electrolyte ejected from the top liquid outlet pipe 116, enabling the electrolyte to be evenly mixed to improve the electrolysis efficiency;

[0046] Introducing oxygen into the copper powder electrolyte has the following effects: 1. Introducing oxygen helps control impurities in the electrolyte, reducing the possibility of their precipitation with copper, thereby improving the purity of copper products; 2. During the anodic oxidation process, copper is oxidized to Cu2+ ions. The presence of oxygen can promote this process, especially important when dealing with low-grade copper ores or waste copper materials; accelerating the anodic reaction rate, oxygen can improve the efficiency of the entire electrolysis process and shorten the processing time.

[0047] Refer to Figure 1 and Figure 2 , an exhaust duct 148 is connected to the top of the top cover 102. The exhaust duct 148 is connected to the external hydrogen recovery duct. The exhaust duct 148 is used to extract the hydrogen at the top to prevent hydrogen from coming into contact with oxygen.

[0048] Specifically, refer to Figure 4 , overflow tanks 113 are equidistantly connected to the inner wall of the electrolytic cell 101. Overflow holes are provided on both sides of the overflow tanks 113. Impurities in the electrolyte will float on the liquid surface and then enter the overflow tanks 113 through the overflow holes, and then be discharged through the diversion frame 114. A diversion frame 114 is connected to the top of the outer wall of the electrolytic cell 101. The diversion frame 114 is inclined. Holes extending into the diversion frame 114 are provided at both ends of the overflow tank 113. The position of the overflow hole is lower than the air inlet hole 105. The exhaust pipe 106 is located at the top end inside the diversion frame 114. The diversion frame 114 is connected to the waste liquid pipe through a flange.

[0049] Specifically, refer to Figure 4, a reinforcing plate 115 is connected to the bottom of the overflow tank 113. The electrolytic cell 101 is made of pp material. After being filled with the electrolyte, its strength will be affected. The reinforcing plate 115 plays a role in reinforcement. The gas stirring pipe 111 is connected to the bottom of the reinforcing plate 115. A liquid outlet pipe 116 is connected inside the reinforcing plate 115. The new electrolyte enters the electrolytic cell 101 through the liquid inlet pipe 117. The liquid inlet pipe 117 is connected to the outer wall of the electrolytic cell 101 on the side away from the reflux pipe 112. The liquid inlet pipe 117 is connected to the external electrolyte supply device. Liquid outlet holes are provided at both ends of the liquid outlet pipe 116. The liquid outlet pipe 116 is located on top of the gas stirring pipe 111.

[0050] Specifically, referring to Figure 4 and Figure 5 , a support plate 118 is connected to the top of the electrolytic cell 101, and a conductive copper bar 119 is connected to the top of the overflow tank 113. The conductive copper bar 119 is used for current transmission. A cross plate 120 is connected to the top of the conductive copper bar 119. Both ends of the cross plate 120 are connected to the top of the support plate 118. A titanium basket 121 is arranged between adjacent cross plates 120. The titanium basket 121 is used to place the anode plate 122. The anode plate 122 is integrally cast from copper metal. A fixing table 123 for placing the titanium basket 121 is connected to the top of the cross plate 120.

[0051] The following provides a structure that facilitates placing the titanium basket 121 on the fixing table 123: Referring to Figure 5 and Figure 6 , specifically, support portions 124 are provided on both sides of the top of the titanium basket 121. A guide plate 125 is connected to the bottom of the support portion 124. The guide plate 125 can be inserted into the clamping portion 126 to position the titanium basket 121. A clamping portion 126 for accommodating the insertion of the guide plate 125 is provided at the bottom of the fixing table 123;

[0052] During the electrolysis process, the anode plate 122 may become irregular due to dissolution, thus affecting its stability in the titanium basket 121. The following provides a structure that can support the anode plate 122: Referring to Figure 5 and Figure 6 , extension portions 127 are connected to both ends of the top of the anode plate 122. The extension portions 127 at the top of the anode plate 122 are placed on the support portions 124 to support the anode plate 122 so that its bottom can be located in the electrolyte. The extension portions 127 are located on the top of the support portions 124. Elastic clamping rings 128 are symmetrically connected to the side of the support portion 124 away from the guide plate 125. The elastic clamping rings 128 are made of metal sheets and have the function of clamping towards the middle, thus clamping both sides of the cathode plate 129 to prevent the anode plate 122 from shaking due to weight changes. The anode plate 122 is located between the symmetric elastic clamping rings 128.

[0053] When the scraper 133 scrapes the surface of the cathode plate 129, since the scraping is done on both sides, the copper powder will be scattered over a large area. The following provides a structure that can gather the copper powder and reduce the copper powder scattering area: Figure 5 Specifically, a cathode plate 129 is provided between two adjacent titanium blues 121, and both ends of the cathode plate 129 are fixed to the horizontal plate 120 by bolts. A roller frame 130 is connected to the top of the support plate 118, and the roller frame 130 is used to stabilize the lateral movement of the mobile frame 131. The top of the roller frame 130 is slidably connected to the mobile frame 131, and a rib plate 132 is provided on the mobile frame 131. Symmetrical scrapers 133 are provided on both sides of the rib plate 132. The scrapers 133 are symmetrically arranged on both sides of the cathode plate 129. The scrapers 133 are inclined, and the inclined surface is arranged toward the axis of the cathode plate 129. When scraping, the scraper 133 on the side moving toward the axis will perform a scraping action, and the spring 136 of the scraper 133 on the other side will be compressed, so that it cannot scrape the copper powder. The scraper 133 is provided with symmetrical strip grooves 134 on the top, and fixing rods 135 passing through the strip grooves 134 are provided on both sides of the rib plate 132. The ends of the fixing rods 135 are threadedly connected with nuts, and the angle of the scraper 133 can be adjusted by adjusting the nuts. At the same time, it can adapt to cathode plates 129 of different thicknesses. The thickness of the cathode plate 129 affects the efficiency of the copper powder. The symmetrical fixing rods 135 are sleeved with springs 136. The two springs 136 are staggered to make the scraper 133 tilted. The top of the rib plate 132 is connected with a baffle 137. The baffle 137 plays a blocking role, so that the scrapers 133 on both sides can be located on the same plane. The bottom of the baffle 137 contacts the top of the scraper 133, and one side of the scraper 133 contacts the two sides of the cathode plate 129.

[0054] The following provides a structure that can drive the moving frame 131 to reciprocate without external airflow entering the electrolytic cell 101 through the gap: Figure 3 and Figure 8 Specifically, one end of the mobile frame 131 close to the workbench 107 is connected to a sliding rod 138 extending from the guide frame 114. The sliding rod 138 is slidably connected to the sliding sleeve 140 to support the sliding rod 138. The sliding sleeve 140 is fixed on the guide frame 114 to prevent the airflow from entering the electrolytic cell 101 through the gap. A driving motor 139 is connected to the top surface of the workbench 107. The output end of the driving motor 139 is connected to the sliding rod 138 through a double connecting rod. The driving motor 139 drives the sliding rod 138 to perform axial reciprocating movement through the double connecting rod. The driving motor 139 drives the mobile frame 131 to move horizontally on the roller frame 130. One side of the guide frame 114 is connected to the sliding sleeve 140 through which the sliding rod 138 passes.

[0055] When the conveying device 104 transports the copper powder out of the electrolyte, a large amount of electrolyte will be carried on the copper powder, which will affect the subsequent drying of the copper powder. The following provides a structure that can reduce the attachment of the electrolyte: Refer to Figure 7 , specifically, a blowing device 141 is connected inside one end of the electrolytic cell 101 close to the side cover 103. The blowing device 141 is arranged in parallel with one end of the conveying device 104. The air outlet of the blowing device 141 is inclined downward to blow the electrolyte back into the electrolytic cell 101. A three-way valve 142 is connected between the filtering device 109 and the heat exchange device 110. The gas filtered by the filtering device 109 is transported to the blowing device 141 through the three-way valve 142 and a pipeline, so as to remove the electrolyte from the copper powder. The other end of the three-way valve 142 is connected to the blowing device 141 through a pipeline. When a negative pressure is generated in the electrolytic cell 101, the outside air will enter the electrolytic cell 101 from the position at the top of the material receiving plate 146. The flowing air can pre-dry the copper powder moving on the material receiving plate 146, reducing the subsequent drying of the copper powder;

[0056] Refer to Figure 1 and Figure 2 , a stand 143 and an observation tank 144 are connected to one end of the electrolytic cell 101 away from the workbench 107. A driving motor 139 connected to the conveying device 104 is installed inside the stand 143. A material receiving box 145 is installed on the other side of the stand 143. The material receiving box 145 is used to load the copper powder transported by the conveying device 104. A material receiving plate 146 extending into the material receiving box 145 is connected to the inner wall of the electrolytic cell 101. The height of the end of the material receiving plate 146 connected to the electrolytic cell 101 is higher than the liquid level of the electrolyte, which can prevent the electrolyte from running out from the material receiving plate 146. An observation window is connected to the top of the observation tank 144. The observation window is made of, which is convenient for observing the internal situation. An inclined plate 147 extending into the electrolytic cell 101 is connected to the bottom of the observation tank 144. When impurities are generated in the electrolyte, the impurities will slide towards the observation tank 144 through the inclined plate 147. The internal impurities of the electrolyte can be understood through the observation window, and then the electrolytic cell 101 can be cleaned. The inclined plate 147 is inclined towards the observation tank 144;

[0057] Observation windows are installed on the top cover 102 and the side cover 103, which is convenient for understanding the consumption of the anode plate 122 through the observation window and then replacing it.

[0058] The production process of scraping-type electrolytic copper powder includes the following steps:

[0059] S1. Installation: First, open the top cover 102 of the electrolytic cell 101, take out multiple titanium baskets 121 in the electrolyte, place the anode plate 122 in the titanium basket 121. When installing, make the extension part 127 of the anode plate 122 rest on the support part 124. At this time, the elastic snap rings 128 on both sides will position the anode plate 122. Then, place the titanium basket 121 into the electrolytic cell 101, and position the titanium basket 121 by inserting it into the clamping part 126 through the guide plate 125;

[0060] S2. Scraping Copper Powder: Cover the electrolytic cell 101 with the top cover 102 through the buckle on it. Start the power supply device, conveying device 104, and drive motor 139 of the electrolytic cell 101 in sequence. The power supply device of the electrolytic cell 101 causes an electrolytic reaction inside the electrolytic cell. At this time, the anode plate 122 begins to dissolve, and copper powder is generated on the surface of the cathode plate 129. The conveying device 104 drives the moving frame 131 to move through the double-link rod. The moving frame 131 drives the scraper 133 above to scrape off the copper powder generated on the surface of the cathode plate 129. The scraped copper powder falls on the conveying device 104 at the bottom and is discharged from the other end by the conveying device 104;

[0061] S3. Air Filtration: Start the vacuum pump 108 and the external hydrogen recovery pipeline. Hydrogen, oxygen, and sulfides will be generated in the electrolyte. Hydrogen will move upward and be discharged from the exhaust duct 148. Oxygen and sulfides are heavier and will be located on the liquid surface, so they can be discharged from the air inlet hole 105. The vacuum pump 108 transports the gas generated in the electrolytic cell 101 to the filtration device 109 through the pipeline. The gas is filtered and cooled by the filtration device 109 and the heat exchange device 110 in sequence and then transported back into the electrolytic cell 101, which can stir and cool the internal electrolyte to improve the electrolysis efficiency and stir the electrolyte. Part of the air flow is discharged from the blowing device 141, which blows the electrolyte attached to the copper powder transported by the conveying device 104. The blown electrolyte will flow to a lower position, thus separating from the copper powder and flowing back into the electrolytic cell 101. The impurities on the top of the electrolyte will flow out from the overflow tank 113, and the new electrolyte will enter the electrolytic cell 101 from the liquid outlet pipe 116;

[0062] S4. Cleaning: When impurities precipitate are observed inside through the observation window on the top of the observation tank 144, open the top cover 102 and the side cover 103, empty the internal electrolyte, then disassemble the conveying device 104, and then clean the impurities in the electrolytic cell 101.

[0063] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. Scraping type electrolytic copper powder production device, including an electrolytic cell (101), wherein the electrolytic cell (101) is filled with electrolyte, and is characterized in that: The top of the electrolytic cell (101) is hinged with a top cover (102) and a side cover (103) arranged side by side. A conveying device (104) is installed inside the electrolytic cell (101). The side cover (103) is located at the top of one side of the conveying device (104). An air inlet hole (105) is opened at the top of the inner wall of the electrolytic cell (101). A discharge air pipe (106) communicated with the air inlet hole (105) is connected to the outer wall of the electrolytic cell (101); A workbench (107) is arranged outside the electrolytic cell (101). A vacuum pump (108) is installed on the top surface of the workbench (107). A filtering device (109) and a heat exchange device (110) are installed on the bottom surface of the workbench (107). The discharge air pipe (106) is connected in series with the vacuum pump (108), the filtering device (109), and the heat exchange device (110) through pipelines in sequence; An air flow stirring pipe (111) is connected to the inner wall of the electrolytic cell (101). Air outlet holes are opened on the outer ring surface of the air flow stirring pipe (111). A return pipe (112) communicated with the air flow stirring pipe (111) is connected to the outer wall of the electrolytic cell (101). The return pipe (112) is connected to the output end of the heat exchange device (110). A one-way valve is connected to one end of the air flow stirring pipe (111) close to the return pipe (112); A suction air pipe (148) is connected to the top of the top cover (102). The suction air pipe (148) is connected to an external hydrogen recovery pipe.

2. The scraper-type electrolytic copper powder production device according to claim 1, characterized in that: Overflow tanks (113) are connected to the inner wall of the electrolytic cell (101) at equal intervals. Overflow holes are opened on both sides of the overflow tanks (113). A guide frame (114) is connected to the top of the outer wall of the electrolytic cell (101). The guide frame (114) is inclined. Holes extending into the guide frame (114) are opened at both ends of the overflow tanks (113). The discharge air pipe (106) is located at the top end inside the guide frame (114). The guide frame (114) is connected to a waste liquid pipe through a flange.

3. The scraper-type electrolytic copper powder production device according to claim 2, wherein: A reinforcing plate (115) is connected to the bottom of the overflow tank (113). The air flow stirring pipe (111) is connected to the bottom of the reinforcing plate (115). A liquid discharge pipe (116) is connected inside the reinforcing plate (115). A liquid inlet pipe (117) is connected to the outer wall of the electrolytic cell (101) on the side away from the return pipe (112). The liquid inlet pipe (117) is connected to an external electrolyte supply device. Liquid discharge holes are opened at both ends of the liquid discharge pipe (116). The liquid discharge pipe (116) is located above the air flow stirring pipe (111).

4. The scraping-type electrolytic copper powder production device according to claim 3, wherein: The top of the electrolytic cell (101) is connected to a support plate (118), the top of the overflow tank (113) is connected to a conductive copper bar (119), the top of the conductive copper bar (119) is connected to a transverse plate (120), both ends of the transverse plate (120) are connected to the top of the support plate (118), titanium blue (121) is arranged between two adjacent transverse plates (120), an anode plate (122) is placed in the titanium blue (121), and the top of the transverse plate (120) is connected to a fixing table (123) for placing the titanium blue (121).

5. The scraper-type electrolytic copper powder production device according to claim 4, characterized in that: Support parts (124) are arranged on both sides of the top of the titanium blue (121); the bottom of the support part (124) is connected to a guide plate (125); and the bottom of the fixing platform (123) is provided with a clamping part (126) for accommodating the insertion of the guide plate (125); The two ends of the top of the anode plate (122) are connected to extension parts (127), the extension parts (127) are located on the top of the support part (124), and the side of the support part (124) away from the guide plate (125) is symmetrically connected to elastic clamping rings (128), and the anode plate (122) is located between the symmetrical elastic clamping rings (128).

6. The scraping-type electrolytic copper powder production device according to claim 5, characterized in that: A cathode plate (129) is provided between two adjacent titanium blues (121), and the two ends of the cathode plate (129) are fixed to the horizontal plate (120) by bolts. The top of the support plate (118) is connected to a roller frame (130), and the top of the roller frame (130) is slidably connected to a moving frame (131). A rib plate (132) is provided on the moving frame (131), and symmetrical scrapers (133) are provided on both sides of the rib plate (132). The top of the scraper (133) is provided with symmetrical strip grooves (134). Fixed rods (135) penetrating the strip grooves (134) are arranged on both sides of the rib plate (132), and nuts are threadedly connected to the ends of the fixed rods (135). Springs (136) are symmetrically sleeved on the fixed rods (135), and the two springs (136) are staggered so that the scraper (133) is inclined. A baffle (137) is connected to the top of the rib plate (132), and the bottom of the baffle (137) is in contact with the top of the scraper (133), and one side of the scraper (133) is in contact with both sides of the cathode plate (129).

7. The scraper-type electrolytic copper powder production device according to claim 6, characterized in that: One end of the movable frame (131) close to the workbench (107) is connected to a sliding rod (138) extending from the guide frame (114); a driving motor (139) is connected to the top surface of the workbench (107); an output end of the driving motor (139) is connected to the sliding rod (138) through a double connecting rod; the driving motor (139) drives the movable frame (131) to move laterally on the roller frame (130); and one side of the guide frame (114) is connected to a sliding sleeve (140) through which the sliding rod (138) passes.

8. The scraping type electrolytic copper powder production device according to claim 1, wherein: One end of the electrolytic cell (101) close to the side cover (103) is internally connected with a blowing device (141). The blowing device (141) is arranged in parallel with one end of the conveying device (104). A three-way valve (142) is connected between the filtering device (109) and the heat exchange device (110). The other end of the three-way valve (142) is connected to the blowing device (141) through a pipeline; One end of the electrolytic cell (101) away from the workbench (107) is connected with a bench (143) and an observation tank (144). A driving motor (139) connected to the conveying device (104) is installed inside the bench (143). A receiving box (145) is installed on the other side of the bench (143). A receiving plate (146) extending into the receiving box (145) is connected to the inner wall of the electrolytic cell (101). An observation window is connected to the top of the observation tank (144). An inclined plate (147) extending into the electrolytic cell (101) is connected to the bottom of the observation tank (144). The inclined plate (147) is inclined towards the observation tank (144); Observation windows are installed on the top cover (102) and the side cover (103).

9. The production process of scraped electrolytic copper powder, using the scraped electrolytic copper powder production device of claim 8, is characterized in that, It includes the following steps: S1. Installation: First, open the top cover (102) on the top of the electrolytic cell (101), take out multiple titanium baskets (121) in the electrolyte, place the anode plate (122) in the titanium basket (121), and then place the titanium basket (121) in the electrolytic cell (101). The titanium basket (121) is positioned by inserting the guiding plate (125) into the clamping part (126); S2. Scraping copper powder: Cover the electrolytic cell (101) with the top cover (102) through the buckle on the top cover (102). Start the power supply device, the conveying device (104) and the driving motor (139) of the electrolytic cell (101) in sequence. The power supply device of the electrolytic cell (101) causes an electrolysis reaction inside the electrolytic cell. The conveying device (104) drives the moving frame (131) to move through the double connecting rods. The moving frame (131) drives the scraper (133) above to scrape off the copper powder generated on the surface of the cathode plate (129). The scraped copper powder falls on the conveying device (104) at the bottom and is discharged from the other end by the conveying device (104); S3. Air filtration: Start the vacuum pump (108). The vacuum pump (108) conveys the gas generated in the electrolytic cell (101) to the filtering device (109) through a pipeline. The gas is filtered and cooled by the filtering device (109) and the heat exchange device (110) in sequence and then conveyed back into the electrolytic cell (101), which plays a role in stirring the electrolyte. Part of the air flow is discharged from the blowing device (141), which plays a role in blowing the electrolyte attached to the copper powder transported by the conveying device (104). The impurities on the top of the electrolyte will flow out from the overflow tank (113), and the new electrolyte will enter the electrolytic cell (101) from the liquid outlet pipe (116); S4. Cleaning: When impurities are observed to precipitate inside through the observation window at the top of the observation tank (144), open the top cover (102) and the side cover (103), empty the electrolyte inside, then disassemble the conveying device (104), and subsequently clean the impurities in the electrolytic cell (101).

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