Electroplating wastewater zero discharge equipment

Abstract

The utility model discloses electroplating wastewater zero discharge equipment which comprises a first crystallizing tank, a first driving motor is arranged at the upper end of the first crystallizing tank, a first stirring shaft is arranged at the lower end of the first driving motor, a first stirring paddle is arranged at the lower end of the first stirring shaft, a first coil pipe is arranged in the first crystallizing tank, and a second coil pipe is arranged in the second crystallizing tank. The two ends of the first coil pipe penetrate through the first crystallizing tank and are provided with a first inlet pipe and a first outlet pipe; the cooling device comprises a first refrigerating machine, one end of the first refrigerating machine is connected with the first inlet pipe, and the other end of the first refrigerating machine is connected with the first outlet pipe; the filtering device comprises a first filtering tank, and a first filtering frame is arranged at the upper end of the first filtering tank. According to the electroplating wastewater zero discharge equipment provided by the utility model, the first refrigerating machine can be used for refrigerating, so that sodium carbonate crystals in electroplating wastewater are discharged, and sodium carbonate is filtered through the filtering device, so that the electroplating wastewater is reused.

Description

Technical Field

[0001] This utility model belongs to the field of emissions, specifically relating to a zero-discharge device for electroplating wastewater. Background Technology

[0002] Electroplating is the process of depositing a thin layer of another metal or alloy onto the surface of certain metals using the principle of electrolysis. It utilizes electrolysis to coat the surface of metal or other materials with a metallic film, thereby preventing metal oxidation (such as rust), improving wear resistance, conductivity, reflectivity, corrosion resistance (such as copper sulfate), and enhancing aesthetics. In zinc-nickel plating, sodium hydroxide is present in the reactants. During the electroplating process, it inevitably comes into contact with carbon dioxide in the air, reacting to form sodium carbonate. As the concentration of sodium carbonate in the electroplating solution increases, the electroplating efficiency decreases, and the solution becomes electroplating wastewater, no longer achieving the desired electroplating effect. Therefore, a zero-discharge electroplating wastewater treatment system is needed to treat the wastewater. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a zero-discharge device for electroplating wastewater.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A zero-discharge device for electroplating wastewater includes:

[0006] A first crystallization tank is provided with a first drive motor at its upper end, a first stirring shaft at its lower end, a first stirring paddle at its lower end, a first coil inside the first crystallization tank, a first inlet pipe at one end of the first coil passing through the first crystallization tank, a first outlet pipe at the other end of the first coil passing through the first crystallization tank, a first feed inlet at the upper end of the first crystallization tank, and a first discharge outlet at the lower end of the first crystallization tank.

[0007] A cooling device, the cooling device including a first refrigeration unit, one end of the first refrigeration unit being connected to the first inlet pipe, and the other end of the first refrigeration unit being connected to the first outlet pipe;

[0008] A filtration device, comprising a first filtration tank disposed below the first discharge port, and a first filtration frame disposed at the upper end of the first filtration tank.

[0009] Furthermore, the first filter frame is provided with a first support plate at both ends, and a first cylinder is provided at the lower end of the first support plate. The lower end of the first cylinder is located at both ends of the first filter pool.

[0010] Furthermore, the zero-discharge equipment for electroplating wastewater includes a drying device, which is disposed on the upper end of the first support plate. The drying device includes a first blower, a first distributor, and a plurality of first air nozzles. One end of the first distributor is connected to the first blower, and the first air nozzles are connected to the other end of the first distributor. The first air nozzles are positioned toward the first filter frame.

[0011] Furthermore, the drying device includes a second cylinder and a first push plate. The second cylinder is disposed at both ends of the first filter frame, and the first push plate is connected to the second cylinder. The lower end of the first push plate is square-wave shaped.

[0012] Furthermore, the zero-discharge equipment for electroplating wastewater includes a first liquid pump, one end of which is connected to the first filter tank, and the other end of which is connected to the first crystallization tank.

[0013] The present invention discloses a zero-discharge device for electroplating wastewater. Compared with the prior art, its advantages are that it can use the first refrigeration unit and the first coil to remove the heat of the first crystallization tank, so that sodium carbonate in the electroplating wastewater crystallizes and is discharged. The sodium carbonate is then filtered through the filtration device, thereby continuously reducing the concentration of sodium carbonate in the electroplating wastewater, so that the electroplating wastewater can meet the electroplating requirements again. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the first crystallization tank according to a preferred embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of a filter device according to a preferred embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the structure of the drying device according to a preferred embodiment of the present invention.

[0018] The reference numerals in the attached drawings include: 100, first crystallization tank; 110, first drive motor; 120, first stirring shaft; 130, first stirring paddle; 140, first feed inlet; 150, first discharge outlet; 160, first coil; 161, first inlet pipe; 162, first outlet pipe; 200, first refrigerator; 300, first filter tank; 310, first filter frame; 320, first support plate; 330, first cylinder; 340, second cylinder; 350, first distributor; 360, first air nozzle; 370, first blower; 380, first pusher plate. Detailed Implementation

[0019] This utility model discloses a zero-discharge device for electroplating wastewater. The specific implementation of this utility model will be further described below with reference to preferred embodiments.

[0020] See attached diagram. Figure 1-4 , Figure 1 This is a schematic diagram of the preferred embodiment provided by this utility model. Figure 2 This is a schematic diagram of the structure of the first crystallization tank 100 according to a preferred embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the filtration device according to a preferred embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the drying device according to a preferred embodiment of the present invention.

[0021] Preferred embodiment.

[0022] This embodiment provides a zero-discharge device for electroplating wastewater, including:

[0023] A first crystallization tank 100 is provided with a first drive motor 110 at its upper end, a first stirring shaft 120 at its lower end, a first stirring paddle 130 at its lower end, a first coil 160 inside the first crystallization tank 100, a first inlet pipe 161 passing through the first crystallization tank 100 at one end, and a first outlet pipe 162 passing through the first crystallization tank 100 at the other end, a first feed inlet 140 at its upper end, and a first discharge outlet 150 at its lower end.

[0024] A cooling device, the cooling device including a first refrigerator 200, one end of the first refrigerator 200 being connected to the first inlet pipe 161, and the other end of the first refrigerator 200 being connected to the first outlet pipe 162;

[0025] The filtration device includes a first filter tank 300, which is located below the first discharge port 150, and a first filter frame 310 is provided at the upper end of the first filter tank 300.

[0026] Furthermore, the first filter frame 310 is provided with a first support plate 320 at both ends, and a first cylinder 330 is provided at the lower end of the first support plate 320. The lower end of the first cylinder 330 is located at both ends of the first filter pool 300.

[0027] Furthermore, the zero-discharge equipment for electroplating wastewater includes a drying device, which is disposed on the upper end of the first support plate 320. The drying device includes a first blower 370, a first distributor 350, and a plurality of first air nozzles 360. One end of the first distributor 350 is connected to the first blower 370, and the first air nozzles 360 are connected to the other end of the first distributor 350. The first air nozzles 360 are positioned toward the first filter frame 310.

[0028] Furthermore, the drying device includes a second cylinder 340 and a first pusher plate 380. The second cylinder 340 is disposed at both ends of the first filter frame 310, and the first pusher plate 380 is connected to the second cylinder 340. The lower end of the first pusher plate 380 is square-wave shaped.

[0029] Furthermore, the zero-discharge equipment for electroplating wastewater includes a first liquid pump, one end of which is connected to the first filter tank 300, and the other end of which is connected to the first crystallization tank 100.

[0030] Working principle: First, an appropriate amount of electroplating wastewater is fed into the first crystallization tank 100. The first chiller 200 cools the tank and removes heat from the first crystallization tank 100 through the first coil 160, causing the temperature inside the tank to drop and thus precipitating sodium carbonate from the wastewater. Simultaneously, the first drive motor 110 drives the first stirring shaft 120 to rotate, which in turn drives the first stirring paddle 130 to rotate, accelerating the precipitation of sodium carbonate from the wastewater. After the sodium carbonate has fully precipitated, the electroplating wastewater mixture is fed into the first filter frame 310, which filters out the sodium carbonate crystals. The first blower 370 diverts the flow through the first distributor 350, allowing the first blower nozzle to blow the crystals, accelerating the drying of the sodium carbonate crystals and facilitating subsequent collection, thereby avoiding waste discharge.

[0031] The first cylinder 330 can push the first filter frame 310 up and down, which allows sodium carbonate crystals to leave the electroplating solution, thus facilitating the drying of sodium carbonate. At the same time, the second cylinder 340 pushes the first push plate 380 to move repeatedly, thereby accelerating the drying process of sodium carbonate. The lower end of the first push plate 380 is square-wavy, which facilitates the pushing of sodium carbonate crystals and avoids the accumulation of sodium carbonate crystals, which would hinder the drying process.

[0032] It is worth mentioning that the technical features such as the first filter frame 310 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the utility model point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0033] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A zero-discharge device for electroplating wastewater, characterized in that, include: A first crystallization tank (100) is provided with a first drive motor (110) at its upper end, a first stirring shaft (120) at its lower end, a first stirring paddle (130) at its lower end, a first coil (160) inside the first crystallization tank (100), a first inlet pipe (161) at one end of the first coil (160) passing through the first crystallization tank (100), and a first outlet pipe (162) at the other end of the first coil (160) passing through the first crystallization tank (100). A first feed inlet (140) is provided at the upper end of the first crystallization tank (100), and a first discharge outlet (150) is provided at the lower end of the first crystallization tank (100). A cooling device, the cooling device including a first refrigerator (200), one end of the first refrigerator (200) being connected to the first inlet pipe (161), and the other end of the first refrigerator (200) being connected to the first outlet pipe (162); The filtration device includes a first filter tank (300), which is located below the first discharge port (150), and a first filter frame (310) is provided at the upper end of the first filter tank (300).

2. The zero-discharge equipment for electroplating wastewater according to claim 1, characterized in that, The first filter frame (310) has a first support plate (320) at both ends, and a first cylinder (330) is provided at the lower end of the first support plate (320). The lower end of the first cylinder (330) is located at both ends of the first filter pool (300).

3. The zero-discharge equipment for electroplating wastewater according to claim 2, characterized in that, The zero-discharge equipment for electroplating wastewater includes a drying device, which is located on the upper end of the first support plate (320). The drying device includes a first blower (370), a first distributor (350), and a plurality of first air nozzles (360). One end of the first distributor (350) is connected to the first blower (370), and the first air nozzles (360) are connected to the other end of the first distributor (350). The first air nozzles (360) are positioned toward the first filter frame (310).

4. The zero-discharge equipment for electroplating wastewater according to claim 3, characterized in that, The drying device includes a second cylinder (340) and a first push plate (380). The second cylinder (340) is disposed at both ends of the first filter frame (310). The first push plate (380) is connected to the second cylinder (340). The lower end of the first push plate (380) is square wave shaped.

5. The zero-discharge equipment for electroplating wastewater according to claim 4, characterized in that, The zero-discharge equipment for electroplating wastewater includes a first liquid pump, one end of which is connected to the first filter tank (300), and the other end of which is connected to the first crystallization tank (100).

Images