Automatic recycling device for nitric acid type tin stripping wastewater
Patent Information
- Application Number
- CN202522382796.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0004]本申请的目的在于提供一种硝酸型退锡废水自动循环回用装置，解决了背景技术中所提出硝酸型退锡废水一般采用添加化学用品，继而采用加热方式对硝酸型退锡废水起到蒸馏作用，而蒸馏水排出，其内筒体内部留下结晶产品，而每组硝酸型退锡废水添加时需要加热，且筒体内部加热需要时间，从而批次进入筒体内部的硝酸型退锡废水加热导致回用效率降低的问题
本申请技术方案通过在内筒内设置防水风机，配合倾斜且呈L型、带有包壳的废液管设计，在废液注入时，防水风机可促进内筒内空气流动，与废液管及包壳形成特殊气流通道，有助于废液管中废液快速预热，相比传统方式，能缩短内筒整体加热所需时间，使批次进入的硝酸型退锡废水更快达到适宜处理温度，有效提升回用效率，降低因长时间加热带来的能耗成本。
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Figure CN224869871U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of nitric acid-type tin stripping wastewater technology, specifically an automatic recycling device for nitric acid-type tin stripping wastewater. Background Technology
[0002] The nitric acid-based tin stripping wastewater automatic recycling device is a specialized piece of equipment for the efficient recovery and recycling of nitric acid-based tin stripping wastewater generated during the production of printed circuit boards (PCBs). Through a series of physical and chemical treatment processes, the device separates and recovers metals such as tin and copper from the wastewater and regenerates effective components such as nitric acid, enabling the tin stripping wastewater to be recycled, thereby reducing production costs and environmental pollution.
[0003] Currently, the treatment of nitric acid-type tin stripping wastewater generally involves adding chemicals and then heating the wastewater to distill it. The distilled water is then discharged, leaving crystalline products inside the inner cylinder. However, each batch of nitric acid-type tin stripping wastewater needs to be heated, and the heating inside the cylinder takes time. As a result, the heating of batches of nitric acid-type tin stripping wastewater entering the cylinder leads to a decrease in recycling efficiency. Utility Model Content
[0004] The purpose of this application is to provide an automatic recycling device for nitric acid-type tin stripping wastewater, which solves the problem mentioned in the background technology that nitric acid-type tin stripping wastewater is generally treated by adding chemicals and then heating to distill it. The distilled water is discharged, leaving crystallized products inside the inner cylinder. Each batch of nitric acid-type tin stripping wastewater needs to be heated, and the heating inside the cylinder takes time. As a result, the heating of batches of nitric acid-type tin stripping wastewater entering the cylinder leads to a decrease in recycling efficiency.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This application provides an automatic recycling device for nitric acid-type tin stripping wastewater, including an inner cylinder. A liquid injection pipe is fixedly installed at the upper end of the inner cylinder, and a waste liquid pipe is fixedly installed at the upper end of the liquid injection pipe. A waste liquid valve is installed on the outer wall of the liquid injection pipe. The waste liquid pipe is L-shaped and inclined. A casing is fixedly installed on the outer wall of the waste liquid pipe. A connecting pipe is fixedly installed at the upper end of the inner cylinder, and the upper end of the connecting pipe is fixedly installed with the casing. The connecting pipe communicates with the casing and the inner cylinder. A fan bracket is installed on the inner wall of the inner cylinder below the connecting pipe, and a waterproof fan is installed at the upper end of the fan bracket. An air outlet pipe is fixedly installed at the upper end of the casing on the side away from the liquid injection pipe, and a liquid outlet pipe is fixedly installed at the lower end of the casing on the side away from the liquid injection pipe. A stirring mechanism is provided inside the inner cylinder, and a heating mechanism is provided outside the inner cylinder.
[0006] By adopting the above technical solution, and by installing a waterproof fan inside the inner cylinder, combined with an inclined, L-shaped waste liquid pipe with a casing, the waterproof fan can promote airflow inside the inner cylinder during waste liquid injection. This creates a special airflow channel with the waste liquid pipe and casing, which helps to quickly preheat the waste liquid in the waste liquid pipe. Compared with traditional methods, this can shorten the overall heating time of the inner cylinder, allowing batches of nitric acid-type tin stripping wastewater to reach the appropriate treatment temperature more quickly, effectively improving recycling efficiency and reducing energy costs caused by prolonged heating.
[0007] Optionally, a feed pipe is fixedly installed at the upper end of the inner cylinder.
[0008] By adopting the above technical solution, an external pipeline can be connected through the feed pipe, which facilitates the addition of chemical reactants, such as nitric acid, to the inner cylinder.
[0009] Optionally, a discharge pipe is fixedly installed at the lower end of the inner cylinder, and a discharge valve is installed on the outer wall of the discharge pipe.
[0010] By adopting the above technical solution, the discharge valve can be used to open and close the discharge pipe, which in turn can discharge the crystals.
[0011] Optionally, the heating mechanism includes multiple sets of heating tubes installed on the outer wall of the inner cylinder, a shell is fixedly installed on the outer wall of the inner cylinder outside the multiple sets of heating tubes, and a temperature sensor is fixedly installed at the upper end of the inner cylinder.
[0012] By adopting the above technical solution, the outer shell can protect the heating tube, the heating tube can heat the inner cylinder, and the temperature sensor can detect the temperature in the inner cylinder. The model number of the sensor is TEMPCO STS00001.
[0013] Optionally, the stirring mechanism includes a stirring rod rotatably mounted on the top wall of the inner cylinder, and multiple sets of stirring blades are fixedly installed on the outer wall of the stirring rod. A scraper is welded to the side of one set of stirring blades away from the stirring rod, and the scraper is slidably connected to the inner wall of the inner cylinder.
[0014] By adopting the above technical solution, the inner cylinder can provide rotational support for the stirring rod, and when the stirring rod rotates, the stirring blades can also rotate. The stirring blades and stirring rod can agitate and mix the waste liquid and the reactant. The scraper can rotate with the stirring blades, so that after the waste liquid crystallizes, the scraper can scrape off and discharge the crystals adhering to the inner wall of the inner cylinder.
[0015] Optionally, a drive motor is installed at the upper end of the inner cylinder, and the output shaft of the drive motor is fixedly installed with the stirring rod.
[0016] By adopting the above technical solution, the stirring rod can be driven to rotate by a drive motor.
[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows: The technical solution of this application, by installing a waterproof fan inside the inner cylinder and combining it with an inclined, L-shaped waste liquid pipe with a casing, promotes airflow inside the inner cylinder during waste liquid injection. This creates a special airflow channel with the waste liquid pipe and casing, which helps to quickly preheat the waste liquid in the waste liquid pipe. Compared with traditional methods, this can shorten the overall heating time of the inner cylinder, allowing batches of nitric acid-type tin stripping wastewater to reach the appropriate treatment temperature more quickly, effectively improving recycling efficiency and reducing energy costs caused by prolonged heating. Attached Figure Description
[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is an axial view schematic diagram of an automatic recycling device for nitric acid-type tin stripping wastewater according to this application; Figure 2 This is a front cross-sectional view of an automatic recycling device for nitric acid-type tin stripping wastewater according to this application; Figure 3 This application relates to an automatic recycling device for nitric acid-type tin stripping wastewater. Figure 2 Enlarged view of point A in the middle; Figure 4 This application discloses an automatic recycling device for nitric acid-type tin stripping wastewater. Figure 2 Enlarged view of section B in the middle.
[0019] In the diagram: 1. Inner cylinder; 2. Injection pipe; 3. Waste liquid valve; 4. Waste liquid pipe; 5. Shell; 6. Fan bracket; 7. Waterproof fan; 8. Air outlet pipe; 9. Liquid outlet pipe; 10. Outer shell; 11. Heating element; 12. Temperature sensor; 13. Feed pipe; 14. Drive motor; 15. Stirring rod; 16. Stirring blade; 17. Scraper; 18. Discharge pipe; 19. Discharge valve; 20. Connecting pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4This application provides a technical solution: an automatic recycling device for nitric acid-type tin stripping wastewater, including an inner cylinder 1, an injection pipe 2 fixedly installed at the upper end of the inner cylinder 1, a waste liquid pipe 4 fixedly installed at the upper end of the injection pipe 2, a waste liquid valve 3 installed on the outer wall of the injection pipe 2, the waste liquid pipe 4 being L-shaped and inclined, a shell 5 fixedly installed on the outer wall of the waste liquid pipe 4, a connecting pipe 20 fixedly installed at the upper end of the inner cylinder 1, the upper end of the connecting pipe 20 being fixedly installed with the shell 5, the connecting pipe 20 being interconnected with the shell 5 and the inner cylinder 1, a fan bracket 6 installed on the inner wall of the inner cylinder 1 below the connecting pipe 20, a waterproof fan 7 installed at the upper end of the fan bracket 6, an air outlet pipe 8 fixedly installed at the upper end of the shell 5 on the side away from the injection pipe 2, a liquid outlet pipe 9 fixedly installed at the lower end of the shell 5 on the side away from the injection pipe 2, a stirring mechanism inside the inner cylinder 1, and a heating mechanism outside the inner cylinder 1; In the technical solution of this application, by setting a waterproof fan 7 inside the inner cylinder 1, and cooperating with the inclined and L-shaped waste liquid pipe 4 with a shell 5, the waterproof fan 7 can promote the air flow inside the inner cylinder 1 when the waste liquid is injected, forming a special airflow channel with the waste liquid pipe 4 and the shell 5. This helps to quickly preheat the waste liquid in the waste liquid pipe 4. Compared with the traditional method, it can shorten the overall heating time required for the inner cylinder 1, allowing the batch of nitric acid-type tin stripping wastewater to reach the appropriate treatment temperature more quickly, effectively improving the recycling efficiency and reducing the energy consumption cost caused by long-term heating.
[0022] In the technical solution of this application, such as Figure 2 and Figure 4 As shown, the stirring mechanism includes a stirring rod 15 rotatably mounted on the top wall of the inner cylinder 1. Multiple sets of stirring blades 16 are fixedly mounted on the outer wall of the stirring rod 15. A scraper 17 is welded to the side of one set of stirring blades 16 away from the stirring rod 15, and the scraper 17 is slidably connected to the inner wall of the inner cylinder 1. The inner cylinder 1 can provide rotational support for the stirring rod 15. When the stirring rod 15 rotates, the stirring blades 16 can rotate. The stirring blades 16 and the stirring rod 15 can agitate and mix the waste liquid and the reactant. The scraper 17 can rotate with the stirring blades 16, so that after the waste liquid crystallizes, the scraper 17 can scrape off and discharge the crystals adhering to the inner wall of the inner cylinder 1. A drive motor 14 is installed at the upper end of the inner cylinder 1. The output shaft of the drive motor 14 is fixedly mounted to the stirring rod 15, and the drive motor 14 can drive the stirring rod 15 to rotate.
[0023] In the technical solution of this application, such as Figure 1 , Figure 2 and Figure 4As shown, the heating mechanism includes multiple sets of heating tubes 11 installed on the outer wall of the inner cylinder 1. A housing 10 is fixedly installed on the outer wall of the inner cylinder 1 outside the multiple sets of heating tubes 11. A temperature sensor 12 is fixedly installed at the upper end of the inner cylinder 1. The housing 10 can protect the heating tubes 11 by wrapping them, while the heating tubes 11 can heat the inner cylinder 1. The temperature sensor 12 can detect the temperature in the inner cylinder 1, and its model is TEMPCO STS00001.
[0024] In the technical solution of this application, such as Figure 1 and Figure 2 As shown, a feed pipe 13 is fixedly installed at the upper end of the inner cylinder 1. An external pipe can be connected through the feed pipe 13 to facilitate the addition of chemical reactants, such as nitric acid, to the inner cylinder 1. A discharge pipe 18 is fixedly installed at the lower end of the inner cylinder 1. A discharge valve 19 is installed on the outer wall of the discharge pipe 18. The discharge valve 19 can be used to open and close the discharge pipe 18, which can discharge the crystals.
[0025] During use, the waste liquid is injected into the inner cylinder 1 through the inclined L-shaped waste liquid pipe 4. The waterproof fan 7 operates to promote airflow inside the inner cylinder 1, forming a special airflow channel with the waste liquid pipe 4 and the casing 5, so that the waste liquid is quickly preheated during the injection process. At the same time, the multiple heating tubes 11 of the heating mechanism heat the inner cylinder 1, and the temperature sensor 12 monitors the temperature in real time. The drive motor 14 drives the stirring rod 15 and stirring blade 16 to rotate, so that the waste liquid is fully mixed with the nitric acid and other reactants added through the feed pipe 13. During the reaction, the scraper 17 rotates with the stirring blade 16 to scrape off the crystals on the inner wall. After the treatment is completed, the crystals are discharged through the discharge pipe 18, the distilled gas is discharged through the gas outlet pipe 8 of the casing 5, and the liquid is discharged through the liquid outlet pipe 9, realizing the efficient recycling of waste liquid. The gas outlet pipe 8 can be connected to an external pipe for convenient gas discharge, and a gas filter mechanism can be set at its end to facilitate the filtration of impurities in the gas.
[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An automatic recycling device for nitric acid-type tin stripping wastewater, characterized in that: The system includes an inner cylinder (1), an injection pipe (2) fixedly installed at the upper end of the inner cylinder (1), a waste liquid pipe (4) fixedly installed at the upper end of the injection pipe (2), a waste liquid valve (3) installed on the outer wall of the injection pipe (2), the waste liquid pipe (4) being L-shaped and inclined, a casing (5) fixedly installed on the outer wall of the waste liquid pipe (4), a connecting pipe (20) fixedly installed at the upper end of the inner cylinder (1), the upper end of the connecting pipe (20) being fixedly installed with the casing (5), and the connecting pipe... (20) is connected to the shell (5) and the inner cylinder (1). A fan bracket (6) is installed on the inner wall of the inner cylinder (1) located below the connecting pipe (20). A waterproof fan (7) is installed at the upper end of the fan bracket (6). An air outlet pipe (8) is fixedly installed at the upper end of the shell (5) on the side away from the liquid injection pipe (2). An outlet pipe (9) is fixedly installed at the lower end of the shell (5) on the side away from the liquid injection pipe (2). A stirring mechanism is provided inside the inner cylinder (1). A heating mechanism is provided outside the inner cylinder (1).
2. The automatic recycling device for nitric acid-type tin stripping wastewater according to claim 1, characterized in that, The upper end of the inner cylinder (1) is fixedly installed with a feed pipe (13).
3. The automatic recycling device for nitric acid-type tin stripping wastewater according to claim 1, characterized in that, The lower end of the inner cylinder (1) is fixedly installed with a discharge pipe (18), and a discharge valve (19) is installed on the outer wall of the discharge pipe (18).
4. The automatic recycling device for nitric acid-type tin stripping wastewater according to claim 1, characterized in that, The heating mechanism includes multiple sets of heating tubes (11) installed on the outer wall of the inner cylinder (1). A shell (10) is fixedly installed on the outer wall of the inner cylinder (1) outside the multiple sets of heating tubes (11). A temperature sensor (12) is fixedly installed on the upper end of the inner cylinder (1).
5. The automatic recycling device for nitric acid-type tin stripping wastewater according to claim 1, characterized in that, The stirring mechanism includes a stirring rod (15) rotatably mounted on the top wall of the inner cylinder (1). Multiple sets of stirring blades (16) are fixedly installed on the outer wall of the stirring rod (15). A scraper (17) is welded to the side of one set of stirring blades (16) away from the stirring rod (15), and the scraper (17) is slidably connected to the inner wall of the inner cylinder (1).
6. The automatic recycling device for nitric acid-type tin stripping wastewater according to claim 5, characterized in that, The upper end of the inner cylinder (1) is equipped with a drive motor (14), and the output shaft of the drive motor (14) is fixedly installed with the stirring rod (15).