Etching liquid recovery and drainage device

Abstract

The utility model discloses an etching liquid recovery and drainage device which comprises a recovery box, a waste liquid neutralizing device is rotatably arranged in the upper part of the recovery box, and a hot air drying device is arranged in the lower part of the recovery box. The waste liquid neutralizing device is arranged in the upper box body, and the mixing assembly is arranged, so that the waste liquid can be neutralized, the waste liquid is uniformly mixed with alkaline substances, copper hydroxide precipitates are generated, upper-layer liquid is discharged through the liquid discharging pipe, and when the precipitated copper hydroxide is discharged through the connecting pipe, the copper hydroxide is uniformly discharged. Sediments on a discharging hopper of the upper box body are scraped through the arranged scraping assembly, discharging is more convenient, cleaning of the inner wall of the upper box body in the later period is facilitated, a hot air drying device is installed, precipitated copper hydroxide enters the lower box body through a connecting pipe, wet copper hydroxide can be dried and dehydrated through the arranged drying assembly, and the arranged material turning assembly is used for turning over the copper hydroxide. And the copper hydroxide is stirred, so that the drying effect of the copper hydroxide is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of etching liquid recovery, in particular to an etching liquid recovery and drainage device. Background Art

[0002] Etching liquid is a liquid that is used for engraving by corroding the material. After the engraving process, a large amount of acidic etching liquid waste will be generated. The acidic etching liquid mainly contains copper, hydrochloric acid, sulfuric acid and oxidant. If it is not treated, it will cause waste of high-value copper and serious environmental pollution.

[0003] Some recycling methods of acidic etching liquid adopt the neutralization method, in which the acidic etching waste liquid is neutralized by alkaline materials to make copper hydroxide, which is then dried and dehydrated to become copper oxide. In the traditional neutralization method of etching waste liquid, a large amount of alkaline substances are poured into the acidic etching liquid, stirred evenly, and the acidity is tested to see if it is neutralized. After that, it can be safely discharged, which results in the waste of high-value copper and poor recycling effect. Utility Model Content

[0004] The utility model aims to provide an etching liquid recovery and drainage device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an etching liquid recovery and drainage device, comprising a recovery box, a waste liquid neutralization device is rotatably installed above the recovery box, and a hot air drying device is installed below the recovery box.

[0006] The waste liquid neutralization device comprises a mixing component, which is arranged above the recovery box and inside, and a scraping component is fixedly connected below the mixing component.

[0007] The hot air drying device comprises a material turning assembly, which is rotatably arranged inside the lower part of the recovery box, and a drying assembly is fixedly installed on the right outer wall below the recovery box.

[0008] As a further preferred embodiment of the present technical solution, the recovery box includes an upper box body, a liquid inlet bucket is fixedly connected to the left opening on the top of the upper box body, a filter screen is bolted to the liquid inlet bucket, a liquid inlet hole is opened on the right side of the top of the upper box body, a connecting pipe is fixedly connected to the opening on the bottom side of the upper box body, and a drain pipe is fixedly connected to the outer wall of one side of the upper box body.

[0009] In the above technical solution, the waste etching liquid is poured into the interior from the liquid inlet hopper, and the impurities in the waste liquid are filtered through the filter screen.

[0010] As a further preferred embodiment of the present technical solution, the bottom of the upper box body is fixedly connected to the lower box body, the connecting pipe passes through the upper end of the lower box body, and the bottom opening of the lower box body is fixedly connected to the discharge pipe.

[0011] As a further preference of this technical solution, the mixing component includes a first motor, which is installed in the middle of the top end of the upper box body. The output end of the first motor is fixedly connected with a first rotating shaft, and the first rotating shaft passes through the top end of the upper box body and extends to the lower part inside the upper box body. Installation holes are arranged in a row on the outer wall of the first rotating shaft, and mixing plates are welded in the installation holes.

[0012] In the above technical solution, the acidic etching solution waste liquid can be neutralized, so that the waste liquid is evenly mixed with the alkaline substance, and copper hydroxide precipitate is generated.

[0013] As a further preference of this technical solution, the scraping component includes a sleeve, which is sleeved on the outer wall below the first rotating shaft. A connecting column is fixedly connected to the outer wall of the sleeve, and a scraping plate is fixedly connected to the other end of the connecting column.

[0014] In the above technical solution, the scraping component scrapes off the precipitate on the lower hopper of the upper box body, which is more convenient for discharging and facilitates the later cleaning of the inner wall of the upper box body.

[0015] As a further preference of this technical solution, the turning component includes a second rotating shaft, which is rotatably connected to the front and rear inner walls of the lower box body. The left end of one side of the second rotating shaft is fixedly connected with a driving gear, and a driven gear is meshed with the teeth of the driving gear. The driven gear is arranged on the second rotating shaft on the other side. A second motor is installed in the middle of the driving gear. The driving gear, the driven gear and the second motor are arranged on the outer surface of the left side of the lower box body. C-shaped stirring rods are arranged in a row on the outer wall of the second rotating shaft.

[0016] In the above technical solution, the copper hydroxide is stirred to improve the drying effect of the copper hydroxide, and a plurality of L-shaped branch pipes are arranged, so that the hot air in the lower box body is evenly distributed, further improving the drying effect.

[0017] As a further preference of this technical solution, the drying component includes a hot air blower, which is installed on the outer wall of the right side of the lower box body. The air outlet end of the hot air blower is fixedly connected with an air inlet pipe, and the air inlet pipe is connected with the through hole on the right side of the lower box body. A through hole on the outer wall above the air inlet pipe is fixedly connected with an L-shaped branch pipe, and the L-shaped branch pipe is connected with the through hole on the right side of the lower box body.

[0018] In the above technical solution, the wet copper hydroxide can be dried and dehydrated to become copper oxide, which is a black oxide of copper, and thus the waste liquid can be effectively recycled.

[0019] The utility model provides an etching solution recovery and drainage device, which has the following beneficial effects:

[0020] (1) The utility model installs a waste liquid neutralization device in the upper box body. The provided mixing component can neutralize the acidic etching waste liquid, making the waste liquid and the alkaline substance mix evenly, generating copper hydroxide precipitation. When the upper liquid is discharged through the drain pipe, and the precipitated copper hydroxide is fed through the connecting pipe, the scraping component is set to scrape the precipitate on the hopper of the upper box body, which is more convenient for discharging and facilitates the subsequent cleaning of the inner wall of the upper box body.

[0021] (2) The utility model installs a hot air drying device. The precipitated copper hydroxide enters the lower box body through the connecting pipe. The provided drying component can dry and dehydrate the wet copper hydroxide to make it copper oxide, which is a black oxide of copper, thereby effectively recycling the waste liquid. In addition, the provided turning component stirs the copper hydroxide to improve the drying effect of the copper hydroxide, and a plurality of L-shaped branch pipes are set, so that the hot air in the lower box body is evenly distributed, further improving the drying effect. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the whole etching waste liquid recovery and drainage device of the utility model;

[0023] Figure 2 is the utility model Figure 1 sectional view;

[0024] Figure 3 is the utility model Figure 2 split structural diagram;

[0025] Figure 4 is the utility model Figure 2 structural schematic diagram of the waste liquid neutralization device;

[0026] In the figure: 1, recovery box; 2, waste liquid neutralization device; 3, hot air drying device; 11, upper box body; 12, liquid inlet hopper; 13, filter screen; 14, liquid inlet hole; 15, connecting pipe; 16, lower box body; 17, discharge pipe; 18, drain pipe; 21, mixing component; 22, scraping component; a1, motor 1; a2, rotating shaft 1; a3, mounting hole; a4, mixing plate; b1, sleeve; b2, connecting column; b3, scraping plate; 31, turning component; 32, drying component; c1, rotating shaft 2; c2, driving gear; c3, driven gear; c4, motor 2; c5, U-shaped stirring rod; d1, hot air blower; d2, air inlet pipe; d3, L-shaped branch pipe. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] The present utility model provides a technical solution: As Figure 1 and Figure 3 As shown, in the present embodiment, an etching liquid recovery and drainage device comprises a recovery box 1, a waste liquid neutralization device 2 is rotatably installed inside the upper part of the recovery box 1, a hot air drying device 3 is installed inside the lower part of the recovery box 1, and the recovery box 1 comprises an upper box body 11, a liquid inlet hopper 12 is fixedly connected to the opening on the left side of the top of the upper box body 11, a filter screen 13 is bolted to the liquid inlet hopper 12, a liquid inlet hole 14 is opened on the right side of the top of the upper box body 11, a connecting pipe 15 is fixedly connected to the opening on the bottom side of the upper box body 11, a drain pipe 18 is fixedly connected to the outer wall of one side of the upper box body 11, a lower box body 16 is fixedly connected to the bottom of the upper box body 11, the connecting pipe 15 passes through the upper end of the lower box body 16, and a discharge pipe 17 is fixedly connected to the opening on the bottom side of the lower box body 16.

[0029] like Figure 2 and Figure 4 As shown, the waste liquid neutralization device 2 includes a mixing component 21, which is arranged inside the upper part of the recovery box 1, and a scraper component 22 is fixedly connected to the lower part of the mixing component 21. The mixing component 21 includes a motor a1, which is installed in the middle of the top of the upper box body 11, and a rotating shaft a2 is fixedly connected to the output end of the motor a1. The rotating shaft a2 passes through the top of the upper box body 11 and extends to the lower part of the upper box body 11. The outer wall of the rotating shaft a2 is arranged with mounting holes a3, and a mixing plate a4 is welded in the mounting hole a3. The scraper component 22 includes a sleeve b1, and the sleeve b1 is sleeved on the rotating shaft The outer wall below a2 and the outer wall of the sleeve b1 are fixedly connected with a connecting column b2, and the other end of the connecting column b2 is fixedly connected with a scraper b3. By installing a waste liquid neutralization device 2 in the upper box body 11, a mixing component 21 is set up to neutralize the acidic etching liquid waste liquid, so that the waste liquid and the alkaline substance are evenly mixed to generate copper hydroxide precipitation, and the upper liquid is discharged through the discharge pipe 18. When the precipitated copper hydroxide is discharged through the connecting pipe 15, the precipitate on the lower hopper of the upper box body 11 is scraped off by the scraper component 22, which is more convenient for discharging and convenient for cleaning the inner wall of the upper box body at a later time.

[0030] like Figure 2 and Figure 3As shown in the figure, the hot air drying device 3 includes a material turning component 31 which is rotatably arranged inside the lower part of the recovery box 1. A drying component 32 is fixedly installed on the outer wall of the right side of the lower part of the recovery box 1. The material turning component 31 includes a second rotating shaft c1 which is rotatably connected to the front and rear inner walls of the lower box body 16. The left end of one second rotating shaft c1 is fixedly connected with a driving gear c2. A driven gear c3 is meshed with the teeth of the driving gear c2 and is arranged on the other second rotating shaft c1. A second motor c4 is installed in the middle of the driving gear c2. The driving gear c2, the driven gear c3 and the second motor c4 are arranged on the outer surface of the left side of the lower box body 16. The outer wall of the second rotating shaft c1 is arranged with U-shaped stirring rods c5. The drying component 32 includes a hot air blower d1 which is installed on the outer wall of the right side of the lower box body 16. The air outlet end of the hot air blower d1 is fixedly connected with an air inlet pipe d2. The air inlet pipe d2 is connected with the through hole on the right side of the lower box body 16. A through hole on the outer wall above the air inlet pipe d2 is fixedly connected with an L-shaped branch pipe d3. The L-shaped branch pipe d3 is connected with the through hole on the right side of the lower box body 16. When the hot air drying device 3 is installed, the precipitated copper hydroxide enters the lower box body 16 through the connecting pipe 15. The provided drying component 32 can dry and dehydrate the wet copper hydroxide to make it copper oxide, which is a black oxide of copper, so as to effectively recycle the waste liquid. In addition, the provided material turning component 31 stirs the copper hydroxide to improve the drying effect of the copper hydroxide. And a plurality of L-shaped branch pipes d3 are provided, so that the hot air in the lower box body 16 is evenly distributed, further improving the drying effect.

[0031] The present utility model provides an etching solution recovery and drainage device, and the specific working principle is as follows: Pour the etching solution waste liquid from the liquid inlet hopper 12 into the interior, filter the impurities in the waste liquid through the filter screen 13, and add alkaline substances such as sodium hydroxide, calcium hydroxide, and potassium hydroxide through the liquid inlet hole 14. Then start the first motor a1 to drive the first rotating shaft a2 to rotate, so that the mixing plate a4 rotates to fully mix the acid-base liquid. After that, stop the first motor a1. After standing, copper hydroxide precipitate is generated, and the upper layer of liquid is discharged through the drain pipe 18. The precipitated copper hydroxide enters the lower box body 16 through the connecting pipe 15; start the second motor c4 to make the second rotating shaft c1 rotate, so that the rotating U-shaped stirring rods c5 stir the copper hydroxide. At the same time, start the hot air blower d1 to make the hot air enter the four weeks inside the lower box body 16 through the air inlet pipe d2 and the L-shaped branch pipe d3, effectively drying it, drying and dehydrating it into copper oxide, which is a black oxide of copper, so as to effectively recycle the waste liquid.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An etching liquid recovery and drainage device, comprising a recovery box (1), characterized in that: Above the inside of the recycling bin (1), a waste liquid neutralization device (2) is rotatably installed, and below the inside of the recycling bin (1), a hot air drying device (3) is installed; The waste liquid neutralization device (2) includes a mixing component (21), the mixing component (21) is arranged above the inside of the recycling bin (1), and a scraping component (22) is fixedly connected below the mixing component (21); The hot air drying device (3) includes a material turning component (31), the material turning component (31) is rotatably arranged below the inside of the recycling bin (1), and a drying component (32) is fixedly installed on the right outer wall below the recycling bin (1).

2. The etching liquid recovery and drainage device according to claim 1, characterized in that: The recycling bin (1) includes an upper box body (11), a liquid inlet hopper (12) is fixedly connected to the opening on the left side of the top of the upper box body (11), a filter screen (13) is bolted to the liquid inlet hopper (12), a liquid inlet hole (14) is opened on the right side of the top of the upper box body (11), a connecting pipe (15) is fixedly connected to the opening on the bottom side of the upper box body (11), and a liquid discharge pipe (18) is fixedly connected to the outer wall of one side of the upper box body (11).

3. The etching liquid recovery and drainage device according to claim 2, characterized in that: The bottom of the upper box body (11) is fixedly connected to a lower box body (16), the connecting pipe (15) passes through the upper end of the lower box body (16), and a discharge pipe (17) is fixedly connected to the opening on the bottom side of the lower box body (16).

4. The etching liquid recovery and drainage device according to claim 1, characterized in that: The mixing component (21) includes a first motor (a1), the first motor (a1) is installed in the middle of the top end of the upper box body (11), the output end of the first motor (a1) is fixedly connected to a first rotating shaft (a2), the first rotating shaft (a2) passes through the top end of the upper box body (11) and extends to the lower part inside the upper box body (11), mounting holes (a3) are arranged in a row on the outer wall of the first rotating shaft (a2), and mixing plates (a4) are welded in the mounting holes (a3).

5. The etching liquid recovery and drainage device according to claim 1, characterized in that: The scraping component (22) includes a sleeve (b1), the sleeve (b1) is sleeved on the outer wall below the first rotating shaft (a2), a connecting column (b2) is fixedly connected to the outer wall of the sleeve (b1), and a scraping plate (b3) is fixedly connected to the other end of the connecting column (b2).

6. The etching liquid recovery and drainage device according to claim 1, characterized in that: The material turning component (31) includes a second rotating shaft (c1), the second rotating shaft (c1) is rotatably connected to the front and rear inner walls of the lower box body (16), the left end of one side of the second rotating shaft (c1) is fixedly connected to a driving gear (c2), a driven gear (c3) is meshed with the teeth of the driving gear (c2), the driven gear (c3) is arranged on the other side of the second rotating shaft (c1), a second motor (c4) is installed in the middle of the driving gear (c2), the driving gear (c2), the driven gear (c3) and the second motor (c4) are arranged on the left outer surface of the lower box body (16), and U-shaped stirring rods (c5) are arranged in a row on the outer wall of the second rotating shaft (c1).

7. The etching liquid recovery and drainage device according to claim 1, characterized in that: The drying component (32) comprises a hot air blower (d1), which is mounted on the right outer wall of the lower box (16); an air outlet end of the hot air blower (d1) is fixedly connected to an air inlet pipe (d2), and the air inlet pipe (d2) is connected to a through hole on the right side of the lower box (16); an L-shaped branch pipe (d3) is fixedly connected to the through hole on the outer wall above the air inlet pipe (d2), and the L-shaped branch pipe (d3) is connected to the through hole on the right side of the lower box (16).

Images