A bathroom metal piece coating pretreatment equipment

Abstract

The utility model provides a kind of bathroom metal piece coating pretreatment equipment, including reflux pipe, waste liquid collection component, dredging auxiliary pipe, anti-fouling coating, mounting bracket and cleaning assembly. The one end of reflux pipe is equipped with liquid inlet, the other end is connected waste liquid collection component, reflux pipe is connected with several dredging auxiliary pipes, for shunting waste liquid, reduce main passage pressure. The inner wall of reflux pipe and dredging auxiliary pipe is coated with anti-fouling coating to prevent adhesion and blockage. Cleaning assembly is arranged inside the reflux pipe, which can remove the residues on the inner wall and keep the flow passage unobstructed. The equipment has simple structure, convenient cleaning and smooth flow, and is suitable for efficient recovery of high-viscosity pretreatment waste liquid, improving system stability and recovery efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of surface treatment equipment, and in particular to a pretreatment equipment for coating of bathroom metal parts. Background Technology

[0002] In the coating production process of bathroom metal parts, the pretreatment stage plays a crucial role in the adhesion and stability of the final coating. This pretreatment typically includes multiple steps such as cleaning, degreasing, pickling, and activation, generating a large amount of waste liquid containing surfactants, acids, alkalis, salts, adhesives, and heavy metal ions. If this waste liquid is not treated and recycled in a timely manner, it will not only increase treatment costs but also easily cause environmental hazards. Therefore, the development of efficient waste liquid treatment and recycling equipment has become a key focus in the industry.

[0003] Currently, centralized recycling units are commonly used in the industry for unified treatment of waste liquids. These devices typically consist of a recycling tank, filtration system, pump, and pipelines, enabling the unified collection and reuse of waste liquids from multiple treatment stations. However, in actual operation, problems arise such as poor waste liquid flow, impurity deposition leading to pipe or filter blockage, and difficulty in fully recovering some high-viscosity components (such as waste liquid containing adhesives). These problems directly affect the continuity and stability of the recycling system, reducing overall recycling efficiency.

[0004] In particular, waste liquids containing adhesives, due to their high viscosity and easy solidification, often deposit and adhere in the conveying pipelines, leading to frequent blockages. Traditional cleaning methods are often insufficient to completely remove them, requiring frequent manual intervention and maintenance, which increases the operational burden. At the same time, existing recycling units are mostly designed with fixed flow velocities and paths in their fluid dynamics, making it difficult to accommodate the flow characteristics of various types of waste liquids, resulting in serious residues of some waste liquids and low resource utilization.

[0005] In view of this, the inventor has specifically designed a pretreatment device for coating of bathroom metal parts, which leads to this invention. Utility Model Content

[0006] (a) Technical problems to be solved The purpose of this application is to provide a pretreatment equipment for coating of bathroom metal parts, which mainly solves the problems of poor waste liquid flow, easy blockage of pipes or components, and low recycling efficiency of glue-containing waste liquid in the existing waste liquid centralized recycling system during the pretreatment of bathroom metal parts coating process.

[0007] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides the following technical solution: This application provides a pretreatment device for coating metal parts in bathroom fixtures, characterized in that it includes a return pipe, one end of which is provided with a liquid inlet and the other end is connected to a waste liquid collection assembly; a plurality of unblocking auxiliary pipes are arranged in parallel on the return pipe, one end of which is fixed to the waste liquid collection assembly; the inner walls of the return pipe and the unblocking auxiliary pipes are provided with an anti-scaling coating; the waste liquid collection assembly is provided with a mounting bracket for supporting the return pipe; and a cleaning assembly is provided inside the return pipe for removing residues adhering to its inner wall.

[0008] In a further embodiment, a guide plate is detachably installed on the inlet to guide the waste liquid smoothly into the return pipe.

[0009] In a further embodiment, a filter screen is provided below the guide plate to trap particulate impurities in the waste liquid.

[0010] In a further embodiment, the cleaning assembly includes a retractable push rod, one end of which is connected to a scraper that matches the inner diameter of the return pipe.

[0011] In a further embodiment, the anti-scaling coating is polytetrafluoroethylene or a fluororesin-based anti-adhesion material.

[0012] In a further embodiment, the reflux pipe is arranged at an angle, with one end closer to the inlet being higher than the other.

[0013] In a further embodiment, the return pipe is connected to the waste liquid collection assembly via a flange interface.

[0014] In a further embodiment, the waste liquid collection assembly includes a sealed tank and an openable top cover.

[0015] In a further embodiment, the bottom of the sealing tank is provided with a waste liquid discharge port.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: By installing a dredging auxiliary pipe in parallel on the return pipe, combined with the anti-scaling coating on the inner wall and cleaning components, the flow efficiency of waste liquid during the recycling process and the anti-clogging performance of the system are significantly improved. At the same time, the introduction of the guide plate and filter screen structure optimizes the waste liquid introduction path and initially achieves impurity interception, effectively reducing the burden on subsequent pipelines. The overall structure not only improves the recycling efficiency of high-viscosity liquids such as glue and reduces the frequency of manual cleaning, but also extends the equipment operating cycle and has good stability and industrial adaptability.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] in: Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ; Figure 2 This utility model Figure 1 Enlarged view of the part Figure 1 ; Figure 3 This utility model Figure 1 Enlarged view of the part Figure 2 ; Figure 4 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ; Figure 5 This is a schematic diagram of the overall structure of the present utility model. Figure 3 .

[0019] Label Explanation: 1. Return pipe; 2. Liquid inlet; 21. Guide plate; 22. Filter screen; 3. Waste liquid collection assembly; 31. Openable top cover; 32. Sealing tank; 4. Unblocking auxiliary pipe; 5. Anti-scaling coating; 6. Mounting bracket; 7. Cleaning assembly; 71. Push rod; 72. Scraper; 8. Flange interface; 9. Waste liquid discharge port. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] This invention provides a waste liquid pretreatment and recycling device for use in the coating process of bathroom metal parts. It aims to solve the problems of poor flow, frequent blockage, and low recycling efficiency of high-viscosity liquids such as glue in the centralized recycling process of waste liquid. It is especially suitable for treating various types of pretreatment waste liquid containing glue, additives, oil and impurities before coating.

[0022] like Figure 1 As shown, the device mainly includes an inclined return pipe 1. One end of the return pipe 1 has a liquid inlet 2 for receiving waste liquid from the pretreatment station, and the other end is connected to a waste liquid collection assembly 3 for collecting and temporarily storing the waste liquid recovered from each branch. Several unblocking auxiliary pipes 4 are connected in parallel on the return pipe 1, and one end of each unblocking auxiliary pipe 4 is fixed to the waste liquid collection assembly 3 to form a multi-path parallel flow structure. This structure significantly improves the problem of difficult flow of high-viscosity liquids in the main channel, and plays a role in diversion, pressure relief and anti-clogging.

[0023] like Figure 1 and Figure 3 As shown, to prevent liquid from adhering to the inner wall of the pipe, thus narrowing or even blocking the flow channel, the inner walls of both the return pipe 1 and the unblocking auxiliary pipe 4 are coated with an anti-scaling coating 5. This coating can be polytetrafluoroethylene (PTFE), fluororesin, or other inert materials with excellent anti-adhesion properties, which can significantly reduce the probability of waste liquid residue adhering to the inner wall of the pipe and extend the continuous operation time of the system. Especially when treating waste liquid containing glue, the anti-scaling coating 5 can effectively resist the coagulation and deposition of colloids caused by local stagnation, temperature fluctuations, and other factors.

[0024] like Figure 1 and Figure 2 As shown, to further improve the stability and ease of maintenance of the system, a detachable guide plate 21 is provided at one end of the return pipe 1 near the inlet 2. The guide plate 21 is used to uniformly guide the high-viscosity waste liquid to the bottom of the pipe and effectively alleviate the backflow and disturbance of the fluid at the inlet. In addition, a filter screen 22 is provided below the guide plate 21 to preliminarily filter particulate impurities in the waste liquid and prevent large particles from entering the pipe and causing physical blockage. The entire guide assembly is detachable, which facilitates regular replacement or cleaning and ensures that the system inlet remains unobstructed for a long time.

[0025] like Figure 3 As shown, a cleaning assembly 7 is installed inside the return pipe 1. This assembly includes a push rod 71 that is axially extendable along the pipe and a scraper 72 connected to one end of the push rod 71. The scraper 72 is precisely matched to the inner diameter of the pipe and can perform a reciprocating scraping action on the inner wall of the pipe by the extension and retraction of the push rod 71. This is used to remove glue, dirt, and crystals that adhere to the inner wall due to long-term operation or sudden abnormalities. The cleaning assembly 7 can be driven by electricity, pneumatics, or hydraulics and can be integrated into an automatic control system. It can achieve periodic or on-demand automatic cleaning by being triggered by flow, pressure, or time, further improving the unmanned operation capability of the equipment.

[0026] like Figure 4 and Figure 5 As shown, the waste liquid flows through the return pipe 1 and the unblocking auxiliary pipe 4 into the waste liquid collection assembly 3 located at the end of the equipment. This assembly includes a sealed tank 32 and an openable top cover 31 to prevent the waste liquid from evaporating or leaking, while also facilitating inspection and maintenance. A waste liquid discharge port 9 is located at the bottom of the tank, which can be connected to a centralized waste liquid treatment system or storage tank for quantitative discharge or reuse. To ensure a sealed connection between the return pipe 1 and the tank, a flange interface 8 is used, providing good sealing and disassembly for easy assembly, disassembly, and sealing inspection.

[0027] In addition, to stably support the return pipe 1, the waste liquid collection assembly 3 is equipped with an installation bracket 6, which has a robust structure and can be adjusted according to the length and angle of the pipe to avoid affecting the sealing and smooth flow of the pipe due to gravity deformation or operating vibration.

[0028] In an optional embodiment, the cleaning component 7 may also be equipped with a residual liquid recovery channel, that is, during the advancement of the scraper 72, the residue scraped off along the inner wall can be channeled into the lower pipeline through a preset drainage channel to avoid clogging the downstream pipeline again, thereby further improving cleaning efficiency and drainage smoothness.

[0029] In summary, this device, through the installation of parallel auxiliary pipes, anti-stick coating, detachable flow guiding structure, and automatic cleaning mechanism, constructs a highly efficient, stable, and low-maintenance waste liquid recycling channel system. It is particularly suitable for the centralized recycling and treatment of waste liquid under multi-liquid, high-viscosity, and high-load conditions in the pretreatment process of metal parts for sanitary ware coating, significantly improving the environmental friendliness and operating efficiency of the production line, and has broad industrial application prospects.

[0030] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A pretreatment device for coating of bathroom metal parts, characterized in that, The system includes a return pipe (1), one end of which is provided with an inlet (2), and the other end is connected to a waste liquid collection assembly (3); several unblocking auxiliary pipes (4) are connected in parallel on the return pipe (1), and one end of the unblocking auxiliary pipe (4) is fixed to the waste liquid collection assembly (3); the inner walls of the return pipe (1) and the unblocking auxiliary pipes (4) are provided with anti-scaling coatings (5); the waste liquid collection assembly (3) is provided with a mounting bracket (6) for supporting the return pipe (1); a cleaning assembly (7) is provided inside the return pipe (1) for removing residues attached to its inner wall.

2. The pretreatment equipment for coating of bathroom metal parts according to claim 1, characterized in that, A guide plate (21) is detachably installed on the inlet (2) to guide the waste liquid smoothly into the return pipe (1).

3. The pretreatment equipment for coating of bathroom metal parts according to claim 2, characterized in that, A filter screen (22) is provided below the guide plate (21) to trap particulate impurities in the waste liquid.

4. The pretreatment equipment for coating of bathroom metal parts according to claim 2, characterized in that, The cleaning component (7) includes a telescopic push rod (71), one end of which is connected to a scraper (72) that matches the inner diameter of the return pipe (1).

5. The pretreatment equipment for coating of bathroom metal parts according to claim 2, characterized in that, The anti-scaling coating (5) is a polytetrafluoroethylene or fluororesin-based anti-adhesion material.

6. The pretreatment equipment for coating of bathroom metal parts according to claim 1, characterized in that, The return pipe (1) is arranged at an angle, with one end closer to the liquid inlet (2) being higher than the other end.

7. The pretreatment equipment for coating of bathroom metal parts according to claim 2, characterized in that, The return pipe (1) is connected to the waste liquid collection assembly (3) via a flange interface (8).

8. The pretreatment equipment for coating of bathroom metal parts according to claim 7, characterized in that, The waste liquid collection assembly (3) includes a sealed tank (32) and an openable top cover (31).

9. The pretreatment equipment for coating of bathroom metal parts according to claim 8, characterized in that, The bottom of the sealing tank (32) is provided with a waste liquid discharge port (9).

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