A filter renewing device for copper sulfate solution circulation

Abstract

The utility model provides a kind of filtering renewal device for copper liquid circulation, including cylinder, filter, liquid inlet pipe, flange mouth, the inside fixed connection of cylinder has filter;The filter is hollow, the top of the filter is detachably connected with liquid inlet pipe, the top of liquid inlet pipe is fixedly connected with flange mouth, and the top of the cylinder is fixedly connected with liquid inlet pipe;The bottom of the cylinder is fixedly connected with liquid outlet pipe, and the innermost layer of the filter inside is filter plate.The utility model has the advantages that: the backwash structure of filter is designed in the device, pipe body is pumped by pump machine and then output from high-pressure spray head, and the design of muscle net can scatter liquid flow, so as to flush filler layer comprehensively, and the backwash effect is good, meanwhile, pipe body can rotate along axis, and sealing performance is guaranteed by sealing ring, high-pressure spray head rotates when pipe body rotates, reduces flushing blind area, covers most of the surface of filter, and backflushing effect is better.

Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, and in particular to a filter renewal device for circulating copper plating solution. Background Technology

[0002] In industrial production processes such as printed circuit board (PCB) manufacturing and electroplating, copper plating solutions (such as electroless copper plating solutions and etching solutions) are widely used critical chemical solutions. To reduce production costs and environmental pollution, recycling used copper plating solutions has become a common industry practice. During this recycling process, the solution carries a large amount of solid impurities, mainly including copper particles, oxides, dust, and other insoluble suspended matter produced by the reaction. If these impurities are not effectively removed, they will seriously affect product quality during reuse, such as causing defects like rough plating layers, pinholes, and even short circuits.

[0003] Therefore, filtration is an indispensable core process in copper smelting solution recycling systems. Currently, vertical filters are widely used in the industry. Their core principle is to pass the liquid to be filtered through a pressure vessel equipped with filter elements or bags to trap solid impurities. However, existing filtration devices have revealed some significant shortcomings in long-term use: Filter media is prone to clogging and requires frequent replacement: Traditional filter bags or cartridges quickly become clogged after trapping a large number of metal particles, leading to a sharp drop in filtration efficiency and an increase in inlet and outlet pressure difference. This not only requires frequent shutdowns to replace filter media, increasing consumable and labor costs, but also affects the continuity and efficiency of production.

[0004] Poor backwashing effect and difficult regeneration: Some equipment is designed with a backwashing function, attempting to remove impurities attached to the filter media through reverse-flowing cleaning fluid to achieve online cleaning and extend the filter media's lifespan. However, existing backwashing methods often have blind spots and uneven water flow distribution, failing to effectively cover the entire filter surface. For strongly adhering metal particles, the impact force of simple reverse water flow is insufficient to completely remove them, resulting in incomplete backwashing, incomplete filter media regeneration, and ultimately, frequent replacement. Therefore, a copper-refining solution circulation filter replacement device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a filter renewal device for circulating copper molten metal, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of the present invention provides a filter renewal device for circulating copper molten metal, comprising a cylinder, a filter, an inlet pipe, and a flange, wherein the filter is fixedly connected inside the cylinder. The filter is hollow, and an inlet pipe is detachably connected to the top of the filter. A flange is fixedly connected to the top of the inlet pipe, and the inlet pipe is fixedly connected to the top of the cylinder. The bottom of the cylinder is fixedly connected to a liquid outlet pipe, the innermost layer of the filter is a filter plate, and the inside of the filter is fixedly connected to a packing layer. A reinforcing mesh is fixedly connected to the outside of the filter; A tube is movably connected to the cylinder wall of the cylinder body, a sealing ring is fixedly connected to the outer surface of the tube body, and a fastener is threadedly connected to the outer surface of the tube body. The fastener is tightened to the outer surface of the cylinder wall of the cylinder body. Several high-pressure nozzles are fixedly connected to the end of the pipe body, and the high-pressure nozzles are three-pronged.

[0008] Preferably, of any of the above embodiments, the cylinder is made of stainless steel, and the filter is open at the top and closed at the bottom.

[0009] The above technical solution is adopted: This device is specifically used for the filtration process in the copper plating solution recycling process. The copper plating solution is filtered by this device and then stored for reuse.

[0010] Used copper-refining solution enters the filter in the cylinder through the inlet pipe. Inside the filter, from the inside out, there are filter plates, PP packing layer, and ribbed mesh. After filtration, the copper-refining solution flows out of the filter and into the cylinder, and then is output from the outlet pipe. When the liquid flows through the PP packing layer, impurities larger than the pore size of the filter material are trapped. The cleaning solution flows back to the tank after passing through the filter material. The PP packing layer can remove most of the metal particles.

[0011] Preferably, in any of the above embodiments, the inlet pipe is welded to the cylinder, and the bottom end of the inlet pipe is connected to the top of the filter via a flange.

[0012] The core structure of this device, employing the above technical solution, consists of a filter, a packing layer, a ribbed mesh, a pipe body, a sealing ring, fasteners, and a high-pressure nozzle. This device incorporates a backwashing structure for the filter. The pipe body pumps cleaning fluid, which is then output from the high-pressure nozzle. The ribbed mesh design disperses the liquid flow, ensuring thorough washing of the packing layer and resulting in excellent backwashing performance. Furthermore, the pipe body can rotate along its axis, and the sealing ring guarantees a tight seal. As the pipe body rotates, the high-pressure nozzle also rotates, reducing blind spots and covering most of the filter surface, further enhancing the backwashing effect.

[0013] Preferably, as described in any of the above embodiments, the filter plate has a plurality of filter holes, and the filter plate is made of stainless steel.

[0014] The above technical solution is adopted: The device structure consists of: Main structure: Cylinder: a vertical container made of stainless steel, closed at the top and connected to the liquid outlet pipe at the bottom; Filter: a hollow cylinder, fixed inside the cylinder, with an opening at the top connected to the liquid inlet pipe through a flange, and closed at the bottom; Liquid inlet pipe: a flange welded at the upper end for connecting the liquid inlet pipe, a flange connected to the top of the filter at the lower end, and the pipe body welded and fixed to the top plate of the cylinder.

[0015] Filter unit: Filter plate: Located in the innermost layer of the filter, it is a stainless steel perforated plate with a pore size of 0.5-1mm, used to intercept large particulate impurities; Packing layer: Porous PP (polypropylene) filter media, filled on the outside of the filter plate, with a pore size of 5-20μm, effectively trapping fine metal particles; Ribs: Stainless steel woven mesh, covering the outside of the packing layer, to enhance the structural stability of the filter layer.

[0016] Rotary backwashing system: Tube body: horizontally penetrates the side wall of the cylinder and can rotate around its own axis at °; internal high-pressure cleaning fluid pipeline is connected; sealing ring: made of fluororubber, fitted on the outer wall of the tube body to ensure dynamic sealing with the cylinder body during rotation; fastener: washer nut, threaded connection to the outer wall of the tube body, tightening it to press the sealing ring and fix the position of the tube body. High-pressure nozzle: a three-pronged stainless steel nozzle fixed to the end of the tube body, outputting a stream of cleaning fluid.

[0017] Preferably, in any of the above embodiments, the filler layer is made of PP, and the rib mesh is located on the outside of the filler layer.

[0018] Preferably, in any of the above solutions, the tube body is rotatable, and the fastener is specifically a washered nut.

[0019] Preferably, the included angle of the high-pressure nozzle is 30-40 degrees, which is one of the above-mentioned solutions.

[0020] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: This copper plating solution circulation filter replacement device is designed with a filter, packing layer, ribbed mesh, pipe body, sealing ring, fasteners, and high-pressure nozzle in a coordinated configuration. The device features a filter backwashing structure. The pipe body pumps the cleaning fluid, which is then output from the high-pressure nozzle. The ribbed mesh design disperses the liquid flow, ensuring thorough washing of the packing layer and achieving excellent backwashing results. Simultaneously, the pipe body can rotate along its axis, and the sealing ring ensures a tight seal. As the pipe body rotates, the high-pressure nozzle also rotates, reducing blind spots and covering most of the filter surface for even better backwashing performance.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first-view structural diagram of the interior of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a structural schematic diagram of the internal second perspective of this utility model; Figure 4 This is a schematic diagram of the structure of the filter of this utility model.

[0023] In the diagram: 1-Cylinder, 2-Filter, 3-Inlet pipe, 4-Flange, 5-Outlet pipe, 6-Filter plate, 7-Packing layer, 8-Rib mesh, 9-Pipe body, 10-Sealing ring, 11-Fastener, 12-High-pressure nozzle. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1-4 As shown, the copper liquid circulation filter replacement device includes a cylinder 1, a filter 2, an inlet pipe 3, and a flange 4. The filter 2 is fixedly connected inside the cylinder 1. The filter 2 is hollow, and the top of the filter 2 is detachably connected to the liquid inlet pipe 3. The top of the liquid inlet pipe 3 is fixedly connected to the flange port 4, and the liquid inlet pipe 3 is fixedly connected to the top of the cylinder 1. The bottom of the cylinder 1 is fixedly connected to the liquid outlet pipe 5, the innermost layer of the filter 2 is the filter plate 6, and the inside of the filter 2 is fixedly connected to the packing layer 7. The filter 2 is fixedly connected to the outer side with a reinforcing mesh 8; A pipe body 9 is movably connected to the cylinder wall of the cylinder body 1. A sealing ring 10 is fixedly connected to the outer surface of the pipe body 9. A fastener 11 is threadedly connected to the outer surface of the pipe body 9. The fastener 11 is tightened to the outer surface of the cylinder wall of the cylinder body 1. Several high-pressure nozzles 12 are fixedly connected to the end of the pipe body 9. The high-pressure nozzles 12 are three-pronged.

[0027] Example 1: The cylinder 1 is made of stainless steel. The filter 2 is open at the top and closed at the bottom. The inlet pipe 3 is welded to the cylinder 1, and the bottom end of the inlet pipe 3 is connected to the top of the filter 2 via a flange. The filter plate 6 has several filter holes and is made of stainless steel. The packing layer 7 is made of PP, and the reinforcing mesh 8 is located on the outside of the packing layer 7. The pipe 9 is rotatable, and the fastener 11 is a washer-nut. The included angle of the high-pressure nozzle 12 is 30-40 degrees.

[0028] Example 2: This device is specifically designed for the filtration process in the recycling of copper plating solution. The copper plating solution is filtered by this device and then stored for reuse.

[0029] The used copper-refining solution enters the filter 2 of the cylinder 1 through the inlet pipe 3. Inside the filter 2, from the inside out, there are filter plates 6, PP packing layer 7, and ribbed mesh 8. After filtration, the copper-refining solution flows out of the filter 2 and into the cylinder 1, and then is output from the outlet pipe 5. When the liquid flows through the PP packing layer 7, impurities larger than the pore size of the filter material are intercepted. The cleaning solution flows back to the tank after passing through the filter material. The PP packing layer 7 can remove most of the metal particles.

[0030] The device consists of the following components: Main structure: Cylinder 1: A vertical container made of stainless steel, closed at the top and connected to the liquid outlet pipe 5 at the bottom; Filter 2: A hollow cylinder, fixed inside the cylinder 1, with an opening at the top connected to the liquid inlet pipe 3 via a flange, and closed at the bottom; Liquid inlet pipe 3: The upper end is welded with a flange 4 for connecting the liquid inlet pipe, and the lower end is connected to the top of the filter 2 with a flange, and the pipe body is welded and fixed to the top plate of the cylinder 1.

[0031] Filter unit: Filter plate 6: Located in the innermost layer of filter 2, it is a stainless steel perforated plate with a pore size of 0.5-1mm, used to intercept large particulate impurities; Packing layer 7: Porous filter media made of PP (polypropylene), filling the outside of filter plate 6, with a pore size of 5-20μm, effectively trapping fine metal particles; Ribs 8: Stainless steel woven mesh, covering the outside of packing layer 7, enhancing the stability of the filter layer structure.

[0032] Rotary backwashing system: Tube 9: horizontally penetrates the side wall of cylinder 1, can rotate 360° around its own axis, and is internally connected to a high-pressure cleaning fluid pipeline; Sealing ring 10: made of fluororubber, fitted onto the outer wall of tube 9 to ensure dynamic sealing with cylinder 1 during rotation; Fastener 11: with washer nut, threaded to the outer wall of tube 9, when tightened it presses against sealing ring 10 and fixes the position of tube 9; High-pressure nozzle 12: a three-pronged stainless steel nozzle, fixed to the inner end of the tube body 9, outputting cleaning fluid flow.

[0033] The working principle of this utility model is as follows: Filtering stage: The copper-refining solution enters the filter 2 through the flange 4 and the inlet pipe 3, passing sequentially through the filter plate 6, the packing layer 7, and the ribbed mesh 8. The filter plate 6 traps metal shavings larger than 1 mm, the PP packing layer 7 adsorbs particles of 5-20 μm, and the purified solution enters the cavity of the cylinder 1 after passing through the filter layer, and finally flows back to the treatment tank through the outlet pipe 5.

[0034] Backwashing stage: When the filtration pressure differential exceeds the limit, an external pump pumps cleaning fluid (such as dilute acid or water) into the pipe body 9. The high-pressure nozzle 12 sprays the liquid onto the surface of the ribbed mesh 8, which scatters and disperses the liquid flow, achieving a thorough flushing of the packing layer 7. Simultaneously, the pipe body 9 is rotated (manually or by motor drive), causing the coverage area of ​​the three-pronged nozzle 12 to scan circumferentially, thoroughly removing impurities accumulated in the filter media pores. The backwash wastewater is pumped out through the inlet pipe 3 in conjunction with the external pump.

[0035] Compared with the prior art, the present invention has the following advantages: This copper plating solution circulation filter replacement device is configured with a filter 2, a packing layer 7, a mesh 8, a pipe 9, a sealing ring 10, fasteners 11, and a high-pressure nozzle 12. The device features a backwashing structure for the filter 2. The pipe 9 is pumped with cleaning fluid, which is then output from the high-pressure nozzle 12. The mesh 8 disperses the liquid flow, ensuring thorough washing of the packing layer 7 and achieving a good backwashing effect. Simultaneously, the pipe 9 can rotate along its axis, and the sealing ring 10 ensures a tight seal. As the pipe 9 rotates, the high-pressure nozzle 12 also rotates, reducing blind spots and covering most of the filter 2's surface, resulting in even better backwashing.

Claims

1. A filter renewal device for circulating copper leaching solution, characterized in that, Includes a cylinder (1), a filter (2), an inlet pipe (3), and a flange (4), wherein the filter (2) is fixedly connected inside the cylinder (1); The filter (2) is hollow, and the top of the filter (2) is detachably connected to the liquid inlet pipe (3). The top end of the liquid inlet pipe (3) is fixedly connected to the flange (4), and the liquid inlet pipe (3) is fixedly connected to the top of the cylinder (1). The bottom of the cylinder (1) is fixedly connected to the liquid outlet pipe (5), the innermost layer of the filter (2) is the filter plate (6), and the inside of the filter (2) is fixedly connected to the packing layer (7). The filter (2) is fixedly connected to the outside of the mesh (8); A tube (9) is movably connected to the wall of the cylinder (1). A sealing ring (10) is fixedly connected to the outer surface of the tube (9). A fastener (11) is threaded to the outer surface of the tube (9). The fastener (11) is tightened to the outer surface of the wall of the cylinder (1). Several high-pressure nozzles (12) are fixedly connected to the end of the tube body (9), and the high-pressure nozzles (12) are trident type.

2. The copper plating solution circulation filter replacement device as described in claim 1, characterized in that: The cylinder (1) is made of stainless steel, and the filter (2) has an open top and a closed bottom.

3. The copper plating solution circulation filter replacement device as described in claim 2, characterized in that: The inlet pipe (3) is welded to the cylinder (1), and the bottom end of the inlet pipe (3) is connected to the top of the filter (2) through a flange.

4. The copper plating solution circulation filter replacement device as described in claim 3, characterized in that: The filter plate (6) has several filter holes, and the filter plate (6) is made of stainless steel.

5. The copper plating solution circulation filter replacement device as described in claim 4, characterized in that: The filler layer (7) is made of PP, and the reinforcing mesh (8) is located on the outside of the filler layer (7).

6. The copper plating solution circulation filter replacement device as described in claim 5, characterized in that: The tube body (9) is rotatable, the fastener (11) is specifically a washer nut, and the included angle of the high-pressure nozzle (12) is 30-40 degrees.

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