Copper sulfate crystallization equipment

Abstract

The utility model relates to the technical field of chemical production equipment, and particularly discloses copper sulfate crystallization equipment which comprises a shell, a stirring rod fixedly penetrates through the center of the bottom in the shell, a crystallization scraper is sleeved outside the stirring rod, a heat insulation layer is embedded in the side wall of the shell, and a condensation pipe is embedded in one side, close to an inner cylinder, in the heat insulation layer. The condensation pipe is spiral, a water inlet and a water outlet are formed in the two ends of the condensation pipe respectively, the water inlet is formed in the upper end of the side wall of the shell in a penetrating mode, the water outlet is formed in the lower end of the side wall of the shell in a penetrating mode, an inclined face is fixedly arranged below the crystallization scraping plate, a crystal collecting opening is formed in the inclined face, and a crystal collecting groove is formed below the crystal collecting opening. The device can collect copper sulfate crystals while condensing copper sulfate micro-etching liquid, prevents the copper sulfate crystals from being adsorbed on the condensing pipe, facilitates collection of the copper sulfate crystals, prevents the copper sulfate crystals from being accumulated on the inner side wall and corners of the recycling barrel, saves time and labor, and is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to copper sulfate crystallization equipment. Background Art

[0002] As a major PCB industrial producer in the world, China consumes a huge amount of copper sulfate micro-etching liquid every year, which also produces a large amount of copper sulfate micro-etching waste liquid. Many companies adopt the abandonment method, that is, selling the waste liquid to qualified recycling units at a low price and recovering the copper in the waste liquid by electrolysis. This not only causes a large amount of micro-etching liquid waste, but also produces a large amount of waste liquid, which also brings great pressure to wastewater treatment. Recovering copper ions in copper sulfate micro-etching liquid and allowing the treated liquid to be returned to the line for reuse is a very meaningful thing for both enterprises and environmental protection.

[0003] Most of the existing copper sulfate recovery technologies are based on the principle of low-temperature crystallization, that is, using the method of lowering the temperature to supersaturate the high-concentration copper sulfate etching waste liquid, thereby crystallizing copper sulfate crystals, and further separating the solid copper sulfate crystals from the liquid etching solution for recycling and reuse.

[0004] At present, the existing technology still has the following areas for improvement: Since the condenser in the existing technology is immersed in the copper sulfate micro-etching solution to be treated, copper sulfate crystals tend to accumulate quickly on the surface of the condenser, resulting in a decrease in cooling effect and a lower recovery efficiency. At the same time, the copper sulfate crystals generated at the condenser are also difficult to clean. On the other hand, residual copper sulfate crystals tend to form on the inner wall and corners of the recovery barrel, which requires regular shutdown for maintenance and cleaning. The thick copper sulfate crystals accumulated over a long period of time are difficult to clean, resulting in a long maintenance time, and even affecting normal production, which is time-consuming and labor-intensive. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a copper sulfate crystallization device, which can collect copper sulfate crystals while condensing copper sulfate micro-etching liquid, avoid copper sulfate crystals from being adsorbed on the condensing tube, facilitate the collection of copper sulfate crystals, and prevent copper sulfate crystals from accumulating on the inner wall and corners of the recovery barrel, thereby saving time and labor and facilitating maintenance.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A copper sulfate crystallization device comprises a shell, one end of which is detachably provided with a top cover, a side wall of the top cover is fixedly provided with a liquid inlet pipe, a side wall of the shell is fixedly provided with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are located on the same side, and a conveying screw is provided on a side of the shell away from the liquid outlet pipe;

[0008] A stirring rod is fixedly provided at the center position of the bottom of the shell, a crystallization scraper is arranged outside the stirring rod, a heat insulation layer is embedded inside the side wall of the shell, a condenser is embedded inside the heat insulation layer close to the inner cylinder, the condenser is spiral, a water inlet and a water outlet are respectively provided at both ends of the condenser, the water inlet is penetrated through the upper end of the side wall of the shell, the water outlet is penetrated through the lower end of the side wall of the shell, an inclined surface is fixedly provided below the crystallization scraper, a crystallization collection port is provided on the inclined surface, and a crystallization collection tank is provided below the crystallization collection port;

[0009] The crystal collection tank is connected to the conveying screw, and a first conveying screw and a second conveying screw are arranged inside the conveying screw. The first conveying screw is arranged horizontally, and a first screw transmission motor is arranged at one end of the first conveying screw. The second conveying screw is arranged longitudinally, and a second screw transmission motor is arranged at one end of the second conveying screw.

[0010] Furthermore, a stirring driving member is fixedly provided at one end of the stirring rod, and the surfaces of the stirring rod and the crystallization scraper are both provided with Teflon coating.

[0011] Furthermore, a first valve is provided on the liquid inlet pipe, and a second valve is provided on the liquid outlet pipe.

[0012] Furthermore, a stirring driving member is fixedly provided on one end of the stirring rod away from the crystallization scraper.

[0013] Furthermore, the conveying screw is Z-shaped or L-shaped, and the crystallization scraper is mountain-shaped.

[0014] Furthermore, the condenser, the water inlet and the water outlet are integrated.

[0015] Furthermore, the stirring rod is located in a hole opened at the center of the inclined surface, and a crater-type sealing ring is sleeved on the connection between the stirring rod and the inclined surface.

[0016] Furthermore, the shell and the top cover are connected via a rotating member.

[0017] The beneficial effects of the utility model are:

[0018] (1) By arranging a condenser, an insulation layer, a shell and a conveying screw, the technical effect that can be achieved is that the conveying screw can collect copper sulfate crystals while condensing the copper sulfate micro-etching solution, the condenser is spirally wrapped around the inside of the side wall of the shell, and the outside of the condensation pipe is covered with an insulation layer to prevent the external room temperature from affecting the condensation effect. The condensation pipe is not in direct contact with the condensed copper sulfate micro-etching solution, which prevents the copper sulfate crystals from being adsorbed on the condenser pipe, resulting in the condensation temperature not meeting the standard, thereby improving the precipitation efficiency of the copper sulfate crystals, facilitating the collection of the copper sulfate crystals, and avoiding the corrosion of the condensation pipe by the condensed copper sulfate micro-etching solution.

[0019] (2) By setting a stirring rod and a crystal scraper, the technical effect that can be achieved is that the copper sulfate crystals on the inner wall and corner of the shell are scraped off by the rotation of the crystal scraper, which is convenient for collecting the copper sulfate crystals, saving time and labor, and facilitating maintenance. The mountain-shaped crystal scraper is convenient for effectively mixing the copper sulfate micro-etching solution to ensure that the temperature and concentration of the copper sulfate micro-etching solution are uniform.

[0020] (3) By providing the inclined surface, the crystallization collection port and the crystallization collection tank, the technical effect that can be achieved is that the copper sulfate crystals on the inclined surface naturally fall into the crystallization collection tank from the crystallization collection port, which is convenient for the collection of the copper sulfate crystals, and the inclined surface facilitates the movement of the copper sulfate crystals.

[0021] (4) By arranging a conveying screw, a first screw drive motor, a second screw drive motor, a first conveying screw and a second conveying screw, the technical effect that can be achieved is that the copper sulfate crystals in the crystal collection tank are transported to the external recovery barrel by the first conveying screw and the second conveying screw. The conveying screw adopts a Z-shape or an L-shape to prevent the condensed copper sulfate micro-etching liquid in the crystal collection tank from flowing out, thereby effectively separating the solid and the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a front view of the utility model;

[0024] Figure 2 for Figure 1 AA section view in;

[0025] Figure 3 It is a top view of the utility model;

[0026] Figure 4 for Figure 3 BB section view in;

[0027] Description of main component symbols:

[0028] In the figure: 1. shell; 2. liquid inlet pipe; 21. first valve; 3. liquid outlet pipe; 31. second valve; 4. top cover; 5. condenser; 6. thermal insulation layer; 7. water inlet; 8. water outlet; 9. stirring drive member; 10. stirring rod; 101. crystallization scraper; 102. crater-type sealing ring; 11. inclined surface; 111. crystallization collection port; 12. crystallization collection tank; 13. conveying screw; 131. first screw drive motor; 132. second screw drive motor; 133. first conveying screw; 134. second conveying screw. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Reference Figure 1 and Figure 2 , is a copper sulfate crystallization device disclosed in the utility model, including a shell 1, the shell 1 is made of stainless steel metal, the shell 1 has a hollow cavity for accommodating a copper sulfate solution, one end of the shell 1 is detachably provided with a top cover 4, the shell 1 and the top cover 4 are rotatably connected by a hinge or hinge so that the inside of the shell 1 can be cleaned.

[0033] A liquid inlet pipe 2 is fixedly penetrated through the side wall of the top cover 4 , a liquid outlet pipe 3 is fixedly penetrated through the side wall of the shell 1 , the liquid inlet pipe 2 and the liquid outlet pipe 3 are located on the same side, and a conveying screw 13 is penetrated through the side of the shell 1 away from the liquid outlet pipe 3 .

[0034] A first valve 21 is provided on the liquid inlet pipe 2, and a second valve 31 is provided on the liquid outlet pipe 3. The first valve 21 and the second valve 31 are used to adjust the flow rate of the copper sulfate solution. A stirring driving member 9 is fixedly provided at one end of the stirring rod 10, and the surfaces of the stirring rod 10 and the crystallization scraper 101 are both provided with a Teflon coating.

[0035] Reference Figure 3 and Figure 4 The peripheral wall of the shell 1 includes an outer wall and an inner wall which are arranged at intervals from the inside to the outside and are coaxially arranged. A condenser 5 is spirally wound on one side of the inner wall facing the outer wall. The condenser 5 is a spiral type. An insulating layer 6 is filled between the condenser 5 and the inner side of the outer wall. The insulating layer 6 ensures that the coolant in the condenser 5 does not contact the external air to avoid the temperature of the coolant in the condenser 5 from rising too fast, affecting the precipitation speed of copper sulfate crystals, and also reducing the waste of condensate.

[0036] When condensate begins to flow in the condenser tube 5 , the copper sulfate solution in the cavity of the shell 1 begins to precipitate due to the decrease in the temperature of the shell 1 . The precipitated copper sulfate crystals fall to the bottom of the shell 1 , and some of the copper sulfate crystals adhere to the inner wall of the shell 1 .

[0037] The two ends of the condenser tube 5 are respectively provided with a water inlet 7 and a water outlet 8, the water inlet 7 is provided through the upper end of the side wall of the shell 1, and the water outlet 8 is provided through the lower end of the side wall of the shell 1. The condenser tube 5, the water inlet 7 and the water outlet 8 are integrated, the condensate in the condenser tube 5 is cooling water, and the condenser tube 5 is a metal condenser tube.

[0038] The water inlet 7 and the water outlet 8 are both provided with control valves for adjusting the inlet and outlet speeds of the cooling water, thereby adjusting the crystallization rate of the copper sulfate solution in the shell 1.

[0039] A stirring rod 10 is fixedly provided at the center position of the bottom of the shell 1, and a crystallization scraper 101 is arranged outside the stirring rod 10. An inclined surface 11 is fixedly provided below the crystallization scraper 101, and a crystallization collecting port 111 is opened on the inclined surface 11. A crystallization collecting tank 12 is arranged below the crystallization collecting port 111. A stirring driving member 9 is fixedly provided at the end of the stirring rod 10 away from the crystallization scraper 101, and the crystallization scraper 101 is in a mountain shape.

[0040] The stirring rod 10 is located in a hole opened at the center of the inclined surface 11 , and a crater-type sealing ring 102 is sleeved on the connection between the stirring rod 10 and the inclined surface 11 to prevent the liquid in the shell 1 from flowing out while not hindering the copper sulfate crystals from sliding into the crystal collection tank 12 .

[0041] The crystal collection tank 12 is connected to the conveying screw 13. A first conveying screw 133 and a second conveying screw 134 are arranged in the conveying screw 13. The first conveying screw 133 is arranged horizontally, and a first screw transmission motor 131 is arranged at one end of the first conveying screw 133. The second conveying screw 134 is arranged longitudinally, and a second screw transmission motor 132 is arranged at one end of the second conveying screw 134.

[0042] The conveying screw 13 is Z-shaped or L-shaped. The first conveying screw 133 and the second conveying screw 134 are both provided with spiral blades. The first conveying screw 133 and the second conveying screw 134 are used to push the copper sulfate crystals out of the conveying screw 13 and collect them into an external recovery barrel.

[0043] The working principle and use process of the utility model are as follows: open the first valve 21, inject copper sulfate solution into the shell 1 through the liquid inlet pipe 2, and then start the cooling device to input condensate from the liquid inlet pipe 2 to the condenser 5 to cool the shell 1.

[0044] The copper sulfate solution in the shell 1 is cooled, and the solubility of copper sulfate decreases. After a period of time, copper sulfate crystals are precipitated from the copper sulfate solution, and some of the copper sulfate crystals sink to the inclined surface 11, and some of the copper sulfate crystals are adsorbed on the inner wall of the shell 1. Then, the stirring drive 9 is started to drive the stirring rod 10 to rotate. When the stirring rod 10 rotates, the crystallization scraper 101 sleeved on the outside rotates accordingly. The crystallization scraper 101 scrapes off the crystals on the inner wall of the shell 1 and sinks to the inclined surface 11. All the precipitated copper sulfate crystals fall into the crystallization collection tank 12 through the crystallization collection port 111.

[0045] The first screw drive motor 131 and the second screw drive motor 132 are started, and the first conveying screw 133 and the second conveying screw 134 in the conveying screw 13 rotate. The spiral blades on the first conveying screw 133 and the second conveying screw 134 drive the copper sulfate crystals to move to the outlet of the conveying screw 13 and collect them in the external recovery bucket.

[0046] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A copper sulfate crystallization device, characterized in that: It comprises a shell, one end of which is detachably provided with a top cover, a side wall of the top cover is fixedly provided with a liquid inlet pipe, a side wall of the shell is fixedly provided with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are located on the same side, and a conveying screw is provided on a side of the shell away from the liquid outlet pipe; A stirring rod is fixedly provided at the center position of the bottom of the shell, a crystallization scraper is arranged outside the stirring rod, a heat insulation layer is embedded inside the side wall of the shell, a condenser is embedded inside the heat insulation layer close to the inner cylinder, the condenser is spiral, a water inlet and a water outlet are respectively provided at both ends of the condenser, the water inlet is penetrated through the upper end of the side wall of the shell, the water outlet is penetrated through the lower end of the side wall of the shell, an inclined surface is fixedly provided below the crystallization scraper, a crystallization collection port is provided on the inclined surface, and a crystallization collection tank is provided below the crystallization collection port; The crystal collection tank is connected to the conveying screw, and a first conveying screw and a second conveying screw are arranged inside the conveying screw. The first conveying screw is arranged horizontally, and a first screw transmission motor is arranged at one end of the first conveying screw. The second conveying screw is arranged longitudinally, and a second screw transmission motor is arranged at one end of the second conveying screw.

2. A copper sulfate crystallization equipment according to claim 1, characterized in that: A stirring driving member is fixedly arranged at one end of the stirring rod, and the surfaces of the stirring rod and the crystallization scraper are both provided with Teflon coating.

3. A copper sulfate crystallization equipment according to claim 1, characterized in that: The liquid inlet pipe is provided with a first valve, and the liquid outlet pipe is provided with a second valve.

4. A copper sulfate crystallization equipment according to claim 1, characterized in that: A stirring driving member is fixedly arranged at one end of the stirring rod away from the crystallization scraper.

5. A copper sulfate crystallization equipment according to claim 1, characterized in that: The conveying screw is Z-shaped or L-shaped, and the crystallization scraper is mountain-shaped.

6. A copper sulfate crystallization equipment according to claim 1, characterized in that: The condenser, the water inlet and the water outlet are integrated.

7. A copper sulfate crystallization equipment according to claim 1, characterized in that: The stirring rod is located in a hole opened at the center of the inclined surface, and a crater-type sealing ring is sleeved on the connection between the stirring rod and the inclined surface.

8. A copper sulfate crystallization equipment according to claim 1, characterized in that: The shell and the top cover are connected via a rotating member.

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