A circulating filter slag removal machine

Abstract

This utility model relates to the field of slag removal machine technology, and provides a circulating filtration slag removal machine. This utility model, by setting up a slag pressing mechanism, an air pump, a filter paper mechanism, and a liftable worktable, achieves efficient, continuous, and automated slag removal of metal surface treatment liquid, significantly shortening filtration time and improving processing efficiency. The liquid pump and air pump work together to allow the liquid to quickly pass through the filter paper under pressure difference. The filtered clear liquid flows back to the tank through the first drain hole and the drain pipe, realizing resource recycling. The overall structure solves the problems of long slag removal time and low efficiency of traditional natural sedimentation methods.

Description

Technical Field

[0001] This utility model relates to the field of slag removal machine technology, and in particular to a circulating filter slag removal machine. Background Technology

[0002] In metal surface treatment processes, chemical conversion treatment is a crucial step in improving the corrosion resistance of the substrate and the adhesion of subsequent coatings, and is widely used in industries such as automotive, home appliances, rail transportation, and machinery manufacturing. Common chemical conversion treatment processes include phosphating, zirconium annealing, and silanization. The core of these processes is the chemical reaction between a specific treatment solution and the metal surface to form a dense conversion film. During the treatment process, as the reaction continues, insoluble residues are continuously generated in the treatment solution, mainly composed of precipitates such as metal phosphates, fluorozirconates, and silane polymers. If these residues are not removed promptly and effectively, they will accumulate in the bath, leading to a decrease in the stability of the treatment solution. This, in turn, affects the uniformity, density, and adhesion of the conversion film, and may cause defects such as particles, roughness, and dust accumulation on the workpiece surface, seriously impacting product quality.

[0003] Currently, most companies still use natural sedimentation or intermittent filtration devices to remove slag from the treated liquid. Natural sedimentation relies on the filter residue settling in the tank for a long time. Although the equipment is simple, it is time-consuming and inefficient, making it difficult to meet the needs of continuous production. Conventional filtration equipment mostly uses ordinary suction filtration or plate and frame filter press, which has problems such as slow filtration speed, easy clogging of filter media, poor sealing, and inconvenient slag discharge, further reducing the overall treatment efficiency.

[0004] The prominent problems with existing technologies are: long processing cycles for filter residue, especially under high-load operating conditions, where the rapid formation of filter residue makes efficient continuous filtration impossible using traditional methods; natural sedimentation takes hours or even days, consuming significant production time; mechanical filtration equipment has low automation, requires frequent manual intervention, is labor-intensive, and exhibits poor filtration stability, affecting process consistency and product quality. Therefore, there is an urgent need for a high-efficiency filtration device capable of rapid pressure filtration, automatic residue discharge, and circulating operation. Utility Model Content

[0005] The purpose of this invention is to solve the problems of long slag removal time and low efficiency of existing metal surface treatment solutions. The invention adopts the following technical solution: A circulating filtration and slag removal machine includes a housing, within which a slag pressing mechanism, an air pump, and a filter paper mechanism are installed. The slag pressing mechanism includes a liquid inlet mechanism and a liquid outlet mechanism. The liquid inlet mechanism includes a liquid pump connected to a liquid delivery pipe and a liquid inlet pipe. One end of the liquid delivery pipe is fixedly connected to a cover, which is connected to the air pump. The liquid outlet mechanism includes a liftable worktable positioned directly below the cover. A first drain hole is provided on the top surface of the worktable, and a drain pipe is installed at the bottom of the worktable. The filter paper mechanism includes filter paper laid on the worktable.

[0006] As described above, in a circulating filter slag removal machine, the filter paper mechanism includes a motor, a drive shaft, and a driven shaft. The drive shaft is connected to one end of the filter paper, and the driven shaft is connected to the other end of the filter paper. The drive shaft is driven by a motor, which drives the drive shaft to rotate.

[0007] As described above, in a circulating filter slag removal machine, a liquid receiving hopper is installed at the discharge end of the worktable, and a second leakage hole is opened on the top surface of the liquid receiving hopper. The liquid receiving hopper is connected to the liquid inlet pipe through a pipeline.

[0008] As described above, in a circulating filter slag removal machine, the discharge mechanism includes a lifting mechanism, which is located at the bottom of the worktable. The power output end of the lifting mechanism is fixedly connected to the worktable. The lifting mechanism is used to drive the worktable to move up and down in the vertical direction. The lifting mechanism is one of a hydraulic cylinder, an electric push rod, or a pneumatic cylinder.

[0009] As described above, in a circulating filter slag removal machine, the inner cavity of the cover is a conical or bowl-shaped structure, and a sealing gasket is provided at the bottom edge of the cover. The sealing gasket contacts the surface of the filter paper laid on the workbench to form a closed filter chamber during the slag pressing process.

[0010] As described above, in a circulating filter slag removal machine, a plurality of positioning rods are installed in the inner cavity of the outer shell, and a slider is slidably sleeved on the positioning rod. The slider and the positioning rod form a sliding guide engagement. The slider is fixedly connected to the worktable, and the positioning rod is used to provide guidance and support for the lifting and lowering movement of the worktable.

[0011] As described above, in a circulating filter slag removal machine, the bottom of the workbench is provided with a liquid collection chamber that communicates with the drain pipe. The liquid collection chamber is located below the first leak hole and surrounds the drain pipe. The liquid collection chamber is used to collect the liquid flowing down from the first leak hole and guide it to be discharged through the drain pipe.

[0012] As described above, in a circulating filter slag removal machine, a pressure gauge is installed on the outer shell. The pressure gauge is connected to the inner cavity of the shroud through a pressure-conducting pipeline to monitor the pressure status inside the shroud in real time.

[0013] As described above, in a circulating filter slag removal machine, a slag receiving cart is provided on one side of the outer shell. The slag receiving cart includes a receiving hopper, and a receiving plate is fixedly connected to one side of the receiving hopper. The receiving hopper is used to receive the filter slag falling from the worktable when the filter paper moves and discharges slag, and the receiving plate is used to receive the filter slag falling from the filter paper.

[0014] As described above, in a circulating filter slag removal machine, an air jet pipe connected to the air pump is provided inside the liquid inlet pipe. The nozzle of the air jet pipe faces the liquid inlet direction of the liquid inlet pipe, and is used to synchronously spray airflow during liquid transportation.

[0015] Implementing the embodiments of this utility model has the following beneficial effects: 1. This utility model, by setting up a slag-pressing mechanism, an air pump, a filter paper mechanism, and a liftable worktable, achieves efficient, continuous, and automated slag removal of metal surface treatment liquid, significantly shortening filtration time and improving processing efficiency. The liquid pump and air pump work together to allow the liquid to quickly pass through the filter paper under pressure difference. The filtered clear liquid flows back to the tank through the first drain hole and the drain pipe, realizing resource recycling. The overall structure solves the problems of long slag removal time and low efficiency of traditional natural sedimentation methods, effectively reducing energy consumption and waste discharge, achieving the goals of energy saving, emission reduction, and efficiency improvement, and has good environmental and economic benefits. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a circulating filter slag removal machine according to this utility model.

[0018] Figure 2 yes Figure 1 A structural diagram from another angle.

[0019] Figure 3 This is a schematic diagram of the slag receiving vehicle of a circulating filtration and slag removal machine according to this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of a circulating filter slag remover after removing the outer shell.

[0021] Figure 5 yes Figure 4 A structural diagram from another angle.

[0022] Figure 6 This is a schematic diagram of the liquid inlet pipe of a circulating filter slag removal machine according to this utility model.

[0023] Figure 7 This is a schematic diagram of the liquid discharge mechanism of a circulating filter slag removal machine according to this utility model.

[0024] As shown in the figure: 1. Outer shell; 11. Pressure gauge; 12. Positioning rod; 13. Sliding block; 2. Slag pressing mechanism; 21. Liquid inlet mechanism; 211. Liquid pump; 212. Liquid delivery pipe; 213. Cover; 214. Liquid inlet pipe; 215. Air jet pipe; 22. Liquid discharge mechanism; 221. Lifting mechanism; 222. First leak hole; 223. Second leak hole; 224. Liquid receiving hopper; 225. Liquid discharge pipe; 226. Workbench; 3. Slag receiving cart; 31. Material receiving hopper; 32. Material receiving tray; 4. Air pump; 5. Filter paper mechanism; 51. Motor; 52. Drive shaft; 53. Filter paper; 54. Driven shaft. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 7As shown, this utility model proposes a circulating filtration and slag removal machine, including a shell 1. The shell 1 is equipped with a slag pressing mechanism 2, an air pump 4, and a filter paper mechanism 5. The slag pressing mechanism 2 includes a liquid inlet mechanism 21 and a liquid outlet mechanism 22. The liquid inlet mechanism 21 includes a liquid pump 211, which is connected to a liquid delivery pipe 212 and a liquid inlet pipe 214. One end of the liquid delivery pipe 212 is fixedly connected to a cover 213, which is connected to the air pump 4. The liquid outlet mechanism 22 includes a liftable worktable 226 located directly below the cover 213. The top surface of the worktable 226 has a first drain hole 222, and the bottom of the worktable 226 is equipped with a drain pipe 225. The liquid inlet pipe 214 is equipped with an air jet pipe 215 connected to the air pump 4. The filter paper mechanism 5 includes filter paper 53 laid on the worktable 226. During operation, the metal surface treatment liquid to be treated is first transported by pump 211 through inlet pipe 214 and delivery pipe 212 into the sealed chamber formed between the enclosure 213 and the filter paper 53 laid on the workbench 226. As pump 211 continuously supplies liquid, the liquid is forced through the filter paper 53 under pressure, achieving solid-liquid separation. Impurities are trapped on the surface of the filter paper 53 to form a filter cake, while the filtered clear liquid enters the bottom of the workbench 226 through the first drain hole 222, is discharged through drain pipe 225, and transported back to the tank for recycling. After filtration for a period of time, pump 211 stops supplying liquid to enclosure 213. At this time, air pump 4 starts, pumping compressed gas into enclosure 213 to increase the air pressure in the chamber, compressing and dehydrating the filter cake. While pump 211 is pumping liquid, air jet pipe 215 sprays air into inlet pipe 214 to agitate the residual liquid in inlet pipe 214, preventing sedimentation and blockage, and improving filtration stability. The adjustable height of the workbench 226 facilitates subsequent slag removal operations, and the filter paper 53 can be replaced via an automatic paper changing mechanism, reducing manual intervention and improving automation. The overall structure enables continuous, stable, and efficient filtration of the metal surface treatment liquid, significantly shortening the slag removal time and solving the problems of low efficiency and long cycle time of traditional natural sedimentation methods.

[0027] Optionally, in some embodiments, the nozzle of the jet pipe 215 is oriented towards the liquid inlet direction of the liquid inlet pipe 214, for synchronously jetting airflow during liquid transportation. While the liquid pump 211 delivers the metal surface treatment liquid into the liquid inlet pipe 214, the air pump 4 supplies air to the jet pipe 215, causing the compressed gas to be jetted towards the liquid flow direction. The airflow and liquid flow mix within the liquid inlet pipe 214, generating a disturbance effect that breaks the laminar flow state, placing the liquid in a turbulent or pulsating flow state. This effectively prevents solid particles from prematurely settling, agglomerating, or clogging on the inner wall of the pipe or in the filter inlet area, ensuring that the liquid is uniformly and stably transported to the filtration area within the cover 213.

[0028] Optionally, in some embodiments, the bottom of the workbench 226 is provided with a liquid collection chamber communicating with the drain pipe 225. The liquid collection chamber is located below the first leak hole 222 and surrounds the drain pipe 225. The liquid collection chamber is used to collect the liquid flowing down from the first leak hole 222 and guide it to be discharged through the drain pipe 225. During the filtration process, the filtered liquid passes through the filter paper 53 and the first leak hole 222 and falls into the liquid collection chamber 227. Since the liquid collection chamber 227 has a large collection space, it can efficiently collect the filtrate flowing down from multiple leak holes or a large area and concentrate it to be discharged through the drain pipe 225, avoiding liquid stagnation or overflow at the bottom of the workbench 226.

[0029] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the filter paper mechanism 5 includes a motor 51, a drive shaft 52, and a driven shaft 54. The drive shaft 52 is connected to one end of the filter paper 53, and the driven shaft 54 ​​is connected to the other end of the filter paper 53. The motor 51 is driven by the drive shaft 52, and the motor 51 is used to drive the drive shaft 52 to rotate. When a filtration cycle is completed and a large amount of filter residue accumulates on the surface of the filter paper 53, reducing its flow capacity, the control system starts the motor 51. The motor 51 drives the drive shaft 52 to rotate through the drive connection, causing the filter paper 53 to move from the driven shaft 54 ​​side to the drive shaft 52 side. The filtered area is wound onto the drive shaft 52, while new, clean filter paper 53 is released onto the surface of the worktable 226. This achieves automatic replacement of the filtration area and continuous feeding and waste paper winding of the filter paper 53, avoiding the cumbersome operation of manually replacing filter media required by traditional equipment, and improving the continuous operation capability and automation level of the equipment.

[0030] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, a liquid receiving hopper 224 is installed at the unloading end of the workbench 226. A second drain hole 223 is provided on the top surface of the liquid receiving hopper 224. The liquid receiving hopper 224 is connected to the liquid inlet pipe 214 via a pipeline. The liquid receiving hopper 224 is used to receive residual filtrate that falls from the filter paper 53. The second drain hole 223 allows the liquid falling into the liquid receiving hopper 224 to be quickly collected and discharged downwards. The liquid receiving hopper 224 is connected to the liquid inlet pipe 214 via a pipeline, allowing the collected filtered liquid to be reintroduced into the liquid inlet system, realizing the recycling and reuse of the filtrate, forming a closed-loop filtration path, avoiding resource waste, and improving the utilization rate of the metal surface treatment liquid.

[0031] Furthermore, as a preferred embodiment of this utility model and not a limitation, the draining mechanism 22 includes a lifting mechanism 221, which is disposed at the bottom of the workbench 226. The power output end of the lifting mechanism 221 is fixedly connected to the workbench 226. The lifting mechanism 221 is used to drive the workbench to rise and fall vertically 226. The lifting mechanism 221 is one of a hydraulic cylinder, an electric push rod, or a pneumatic cylinder. During the filtration stage, the lifting mechanism 221 drives the workbench 226 to rise to a preset position, so that the filter paper 53 laid on it is tightly attached to the bottom of the cover 213, forming a sealed filtration chamber, ensuring the stable operation of the pressurized or negative pressure filtration process. When filtration is completed and it is necessary to discharge slag or replace the filter paper, the lifting mechanism 221 drives the workbench 226 to descend vertically, so that the workbench 226 is separated from the cover 213, making it easy for the filter slag to be removed together with the filter paper 53 or automatically unloaded.

[0032] Furthermore, as a preferred embodiment of this utility model and not a limitation, the inner cavity of the cover 213 is a conical or bowl-shaped structure. A sealing gasket is provided at the bottom edge of the cover 213, and the sealing gasket contacts the surface of the filter paper 53 laid on the workbench 226, forming a sealed filtration chamber during the pressing process. When the workbench 226 rises to its upper limit position driven by the lifting mechanism 221, the sealing gasket is tightly fitted to the surface of the filter paper 53 laid on the workbench 226, forming a sealed filtration chamber between the cover 213 and the workbench 226. The conical or bowl-shaped structure of the cover 213 not only enhances the uniformity of the internal flow field but also improves space utilization and pressure resistance, which is beneficial for improving the stability and throughput of the filtration process.

[0033] Furthermore, as a preferred embodiment of this utility model and not a limitation, a plurality of positioning rods 12 are installed in the inner cavity of the outer shell 1. A slider 13 is slidably sleeved on the positioning rod 12. The slider 13 and the positioning rod 12 form a sliding guide engagement. The slider 13 is fixedly connected to the worktable 226. The positioning rod 12 is used to guide and support the lifting and lowering movement of the worktable 226. When the lifting mechanism 221 drives the worktable 226 to rise or fall vertically, the slider 13 slides synchronously along the positioning rod 12, providing precise guidance and lateral support for the lifting and lowering movement of the worktable 226, preventing it from deviating, tilting or shaking during operation, and ensuring that the worktable 226 can be stably and accurately aligned with the cover 213 and pressed tightly for sealing.

[0034] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, a pressure gauge 11 is installed on the outer shell 1. The pressure gauge 11 is connected to the inner cavity of the cover 213 via a pressure-conducting pipeline for real-time monitoring of the pressure state inside the cover 213. During the filtration process, when the liquid pump 211 or the air pump 4 acts inside the cover 213 to create a positive pressure environment, the pressure-conducting pipeline transmits the real-time pressure inside the cover 213 to the pressure gauge 11, enabling it to continuously display the pressure value inside the cavity. Operators or the control system can judge the filtration process based on pressure changes, realizing intuitive and real-time monitoring of the pressure state inside the filtration cavity, improving the visualization and controllability of equipment operation. It also helps to promptly detect abnormal operating conditions such as blockages and leaks, avoiding a decrease in filtration efficiency or equipment damage due to pressure imbalance, and ensuring the safe and stable operation of the system.

[0035] Furthermore, as a preferred embodiment of this utility model and not a limitation, a slag receiving cart 3 is provided on one side of the outer shell 1. The slag receiving cart 3 includes a receiving hopper 31, and a receiving tray 32 is fixedly connected to one side of the receiving hopper 31. The receiving hopper 31 is used to receive the filter residue falling from the workbench 226 when the filter paper 53 moves to unload the slag. The receiving tray 32 is used to receive the filter residue falling from the filter paper 53. When the filtration cycle is completed, the workbench 226 descends, and the filter paper 53 moves to unload the slag under the drive of the motor 51. The filter residue accumulated on the surface of the filter paper 53 moves with the filter paper to the end of the workbench 226 and falls off. At this time, the receiving hopper 31 is located directly below and is used to receive the main filter residue falling from the workbench 226 and the front end of the filter paper 53. The receiving tray 32 extends outward and is used to collect residual residue that splashes or slides off from the edge of the filter paper 53 or during the movement, ensuring that the filter residue is fully collected.

[0036] Example 1: This utility model proposes a circulating filtration and slag removal machine, including a shell 1. The shell 1 is characterized by housing a slag pressing mechanism 2, an air pump 4, and a filter paper mechanism 5. The slag pressing mechanism 2 includes a liquid inlet mechanism 21 and a liquid outlet mechanism 22. The liquid inlet mechanism 21 includes a liquid pump 211, which is connected to a delivery pipe 212 and an inlet pipe 214. One end of the delivery pipe 212 is fixedly connected to a cover 213, which is connected to the air pump 4. The liquid outlet mechanism 22 includes a liftable worktable 226 located directly below the cover 213. The top surface of the worktable 226 has a first drain hole 222, and the bottom of the worktable 226 is equipped with a drain pipe 225. The inlet pipe 214 contains an air jet pipe 215 connected to the air pump 4. The filter paper mechanism 5 includes filter paper 53 laid on the worktable 226. During operation, the surface treatment liquid for the metal to be treated is first transported by the pump 211 through the inlet pipe 214 and the delivery pipe 212 into the sealed chamber formed between the cover 213 and the filter paper 53 laid on the workbench 226. The inner cavity of the cover 213 has a conical or bowl-shaped structure. The bottom edge of the cover 213 is provided with a sealing gasket, which is in contact with the surface of the filter paper 53 laid on the workbench 226 to form a sealed filtration chamber during the slag pressing process. When the workbench 226 rises to its upper limit position under the drive of the lifting mechanism 221, the sealing gasket is tightly attached to the surface of the filter paper 53 laid on the workbench 226, forming a sealed filtration chamber between the cover 213 and the workbench 226. The conical or bowl-shaped cover 213 structure not only enhances the uniformity of the internal flow field, but also improves the space utilization and pressure resistance, which is conducive to improving the stability and throughput of filtration. As the liquid pump 211 continuously supplies liquid, the liquid is forced to pass through the filter paper 53 under pressure, realizing solid-liquid separation. Impurities are trapped on the surface of the filter paper 53 to form a filter cake, and the filtered clear liquid enters the bottom of the workbench 226 through the first drain hole 222, is discharged through the drain pipe 225 and transported back to the tank, realizing recycling. The bottom of the workbench 226 is provided with a liquid collection chamber that communicates with the drain pipe 225. The liquid collection chamber is located below the first leak hole 222 and surrounds the drain pipe 225. The liquid collection chamber is used to collect the liquid flowing down from the first leak hole 222 and guide it to be discharged through the drain pipe 225. During the filtration process, the filtered liquid passes through the filter paper 53 and the first leak hole 222 and falls into the liquid collection chamber 227. Because the liquid collection chamber 227 has a large collection space, it can efficiently collect the filtrate flowing down from multiple leak holes or a large area and concentrate it to be discharged through the drain pipe 225, avoiding liquid stagnation or overflow at the bottom of the workbench 226. After filtration for a period of time, the liquid pump 211 stops supplying liquid to the cover 213. At this time, the air pump 4 starts and pumps compressed gas into the cover 213, increasing the air pressure in the chamber and compressing and dehydrating the filter cake. When the liquid pump 211 is pumping liquid, the jet pipe 215 sprays air into the liquid inlet pipe 214 to disturb the residual liquid in the liquid inlet pipe 214, prevent sedimentation and blockage, and improve filtration stability.The adjustable height of the workbench 226 facilitates subsequent slag removal operations, and the filter paper 53 can be replaced via an automatic paper changing mechanism, reducing manual intervention and improving automation. The overall structure achieves continuous, stable, and efficient filtration of the metal surface treatment liquid, significantly shortening the slag removal time and solving the problems of low efficiency and long cycle time associated with traditional natural sedimentation methods. The nozzle of the jet pipe 215 faces the liquid inlet direction of the inlet pipe 214, used to synchronously spray airflow during liquid transport. While the liquid pump 211 delivers the metal surface treatment liquid into the inlet pipe 214, the air pump 4 supplies air to the jet pipe 215, causing compressed gas to be sprayed in the direction of liquid flow. The airflow and liquid flow mix within the inlet pipe 214, generating a disturbance effect that breaks the laminar flow state, placing the liquid in a turbulent or pulsating flow state. This effectively prevents solid particles from prematurely settling, accumulating, or clogging on the inner wall of the pipe or inlet area of ​​the filter, ensuring that the liquid is uniformly and stably transported to the filtration area within the enclosure 213.

[0037] The drainage mechanism 22 includes a lifting mechanism 221, which is located at the bottom of the workbench 226. The power output end of the lifting mechanism 221 is fixedly connected to the workbench 226. The lifting mechanism 221 is used to drive the workbench to rise and fall vertically along the vertical direction 226. The lifting mechanism 221 can be one of a hydraulic cylinder, an electric push rod, or a pneumatic cylinder. During the filtration stage, the lifting mechanism 221 drives the workbench 226 to rise to a preset position, so that the filter paper 53 laid on it is tightly attached to the bottom of the cover 213, forming a sealed filtration chamber, ensuring the stable operation of the pressurized or negative pressure filtration process. When filtration is completed and it is necessary to discharge slag or replace the filter paper, the lifting mechanism 221 drives the workbench 226 to fall vertically, so that the workbench 226 is separated from the cover 213, making it easy for the filter slag to be removed together with the filter paper 53 or automatically unloaded.

[0038] The filter paper mechanism 5 includes a motor 51, a drive shaft 52, and a driven shaft 54. The drive shaft 52 is connected to one end of the filter paper 53, and the driven shaft 54 ​​is connected to the other end of the filter paper 53. The motor 51 is driven by the drive shaft 52. When a filtration cycle is completed and a large amount of filter residue accumulates on the surface of the filter paper 53, reducing its flow capacity, the control system starts the motor 51. The motor 51 drives the drive shaft 52 to rotate through the drive connection, moving the filter paper 53 from the driven shaft 54 ​​side to the drive shaft 52 side. The filtered area is wound onto the drive shaft 52, while new, clean filter paper 53 is released onto the surface of the worktable 226. This achieves automatic replacement of the filtration area and continuous feeding and waste paper winding of the filter paper 53, avoiding the cumbersome operation of manually replacing filter media required by traditional equipment, and improving the continuous operation capability and automation level of the equipment.

[0039] A liquid receiving hopper 224 is installed at the unloading end of the workbench 226. A second drain hole 223 is opened on the top surface of the liquid receiving hopper 224. The liquid receiving hopper 224 is connected to the liquid inlet pipe 214. The liquid receiving hopper 224 is used to receive residual filtrate that falls from the filter paper 53. The second drain hole 223 allows the liquid falling into the liquid receiving hopper 224 to be quickly collected and discharged downwards. The liquid receiving hopper 224 is connected to the liquid inlet pipe 214 through the pipeline, and the collected filtered liquid is reintroduced into the liquid inlet system to realize the recycling and reuse of filtrate, forming a closed-loop filtration path, avoiding resource waste, and improving the utilization rate of metal surface treatment liquid.

[0040] The inner cavity of the outer casing 1 is equipped with several positioning rods 12, and sliders 13 are slidably sleeved on the positioning rods 12. The sliders 13 and the positioning rods 12 form a sliding guide engagement. The sliders 13 are fixedly connected to the worktable 226. The positioning rods 12 are used to guide and support the lifting and lowering movement of the worktable 226. When the lifting mechanism 221 drives the worktable 226 to rise or fall vertically, the sliders 13 slide synchronously along the positioning rods 12, providing precise guidance and lateral support for the lifting and lowering movement of the worktable 226, preventing it from deviating, tilting or shaking during operation, and ensuring that the worktable 226 can be smoothly and accurately aligned with the cover 213 and pressed tightly for sealing.

[0041] A pressure gauge 11 is installed on the outer casing 1. The pressure gauge 11 is connected to the inner cavity of the housing 213 via a pressure-conducting pipeline for real-time monitoring of the pressure state inside the housing 213. During the filtration process, when the liquid pump 211 or the air pump 4 acts inside the housing 213 to create a positive pressure environment, the pressure-conducting pipeline transmits the real-time pressure inside the housing 213 to the pressure gauge 11, enabling it to continuously display the pressure value inside the chamber. Operators or the control system can judge the filtration process based on pressure changes, achieving intuitive and real-time monitoring of the pressure state inside the filtration chamber, improving the visualization and controllability of equipment operation. It also helps to promptly detect abnormal operating conditions such as blockages and leaks, avoiding a decrease in filtration efficiency or equipment damage due to pressure imbalance, and ensuring the safe and stable operation of the system.

[0042] A slag receiving cart 3 is provided on one side of the outer casing 1. The slag receiving cart 3 includes a receiving hopper 31, and a receiving tray 32 is fixedly connected to one side of the receiving hopper 31. The receiving hopper 31 is used to receive the filter residue falling from the workbench 226 when the filter paper 53 moves and discharges the slag. The receiving tray 32 is used to receive the filter residue falling from the filter paper 53. When the filtration cycle is completed, the workbench 226 is lowered, and the filter paper 53 moves and discharges the slag under the drive of the motor 51. The filter residue accumulated on the surface of the filter paper 53 moves with the filter paper to the end of the workbench 226 and falls off. At this time, the receiving hopper 31 is located directly below and is used to receive the main filter residue falling from the workbench 226 and the front end of the filter paper 53. The receiving tray 32 is extended outward and is used to collect residual slag that splashes or slides off from the edge of the filter paper 53 or during the movement, ensuring that the filter residue is collected in a concentrated manner.

[0043] Specifically, the working principle of this utility model is as follows: When the slag remover is working, the surface treatment liquid to be treated is first transported by the liquid pump 211 through the inlet pipe 214 and the delivery pipe 212 to the sealed chamber formed between the cover 213 and the worktable 226. The cover 213 has a conical or bowl-shaped structure, and its bottom edge is equipped with a sealing gasket. When the lifting mechanism 221 drives the worktable 226 to rise, the sealing gasket and the filter paper 53 are tightly fitted together to form a sealed filtration chamber. Under the pressure of the liquid pump 211 and the assistance of the air pump 4, the liquid is forced to pass through the filter paper 53 laid on the worktable 226 under the pressure difference. Impurities are trapped to form a filter cake, and the filtered clear liquid enters the bottom collection chamber 227 through the first drain hole 222 on the top surface of the worktable 226, is discharged through the drain pipe 225 and flows back to the tank, realizing recycling.

[0044] During the filtration process, the jet pipe 215 synchronously sprays airflow along the liquid inlet pipe 214, causing the gas and liquid to mix and generate turbulent disturbances within the pipe. This effectively prevents solid particles from depositing and clogging the inner wall of the pipe or at the filter inlet, improving the stability of the liquid inlet and the uniformity of filtration. After filtration for a period of time, the liquid pump 211 stops supplying liquid, and the air pump 4 pumps compressed gas into the shroud 213 to compact and dehydrate the filter cake, improving the solid-liquid separation effect. At the same time, the pressure gauge 11 monitors the internal pressure of the shroud 213 in real time through the pressure guide pipeline, allowing operators or the control system to judge the filtration status and promptly initiate the backflushing or slag removal procedure.

[0045] When excessive filter residue accumulates on the surface of the filter paper 53, the control system starts the motor 51, driving the drive shaft 52 to rotate, which in turn moves the filter paper 53 from the driven shaft 54 ​​side to the drive shaft 52 side, thus achieving automatic filter paper replacement. The worktable 226 can move up and down under the action of the lifting mechanism 221, and with the guide structure of the positioning rod 12 and the slider 13, it ensures smooth lifting and accurate positioning. During residue unloading, the filter residue moves with the filter paper 53 to the end and falls off, and is collected by the receiving hopper 31 and receiving tray 32 in the residue receiving car 3; the residual filtrate is collected by the liquid receiving hopper 224 at the discharge end of the worktable 226, and flows back to the liquid inlet pipe 214 through the second drain hole 223, realizing efficient dual-path treatment of filtrate recovery and residue-liquid.

[0046] In summary, this invention solves the problems of long slag removal time and low efficiency of existing metal surface treatment solutions.

[0047] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A circulating filter de-sludger comprising a housing (1), characterized in that, The outer casing (1) is equipped with a slag pressing mechanism (2), an air pump (4), and a filter paper mechanism (5). The slag pressing mechanism (2) includes a liquid inlet mechanism (21) and a liquid outlet mechanism (22). The liquid inlet mechanism (21) includes a liquid pump (211). The liquid pump (211) is connected to a liquid delivery pipe (212) and a liquid inlet pipe (214). One end of the liquid delivery pipe (212) is fixedly connected to a cover (213). The cover (213) is connected to the air pump (4). The liquid outlet mechanism (22) includes a liftable worktable (226) located directly below the cover (213). The top surface of the worktable (226) is provided with a first drain hole (222). The bottom of the worktable (226) is equipped with a drain pipe (225). The filter paper mechanism (5) includes filter paper (53) laid on the worktable (226).

2. A circulating filter de-sludger according to claim 1, wherein, The filter paper mechanism (5) includes a motor (51), a drive shaft (52), and a driven shaft (54). The drive shaft (52) is connected to one end of the filter paper (53), and the driven shaft (54) is connected to the other end of the filter paper (53). The drive shaft (52) is connected to the motor (51) for driving the drive shaft (52) to rotate.

3. A circulating filter de-sludger according to claim 1, wherein, The workbench (226) is equipped with a liquid receiving hopper (224) at the unloading end. The top surface of the liquid receiving hopper (224) is provided with a second leakage hole (223). The liquid receiving hopper (224) is connected to the liquid inlet pipe (214) through the pipeline.

4. The circulating filter slag removal machine according to claim 1, characterized in that, The draining mechanism (22) includes a lifting mechanism (221), which is located at the bottom of the workbench (226). The power output end of the lifting mechanism (221) is fixedly connected to the workbench (226). The lifting mechanism (221) is used to drive the workbench to move up and down in the vertical direction. The lifting mechanism (221) is one of a hydraulic cylinder, an electric push rod, or a pneumatic cylinder.

5. A circulating filter slag removal machine according to claim 1, characterized in that, The inner cavity of the cover (213) is a conical or bowl-shaped structure. The bottom edge of the cover (213) is provided with a sealing gasket. The sealing gasket is in contact with the surface of the filter paper (53) laid on the workbench (226) to form a closed filter chamber during the slag pressing process.

6. A circulating filter slag removal machine according to claim 1, characterized in that, The inner cavity of the outer shell (1) is equipped with a plurality of positioning rods (12), and a slider (13) is slidably sleeved on the positioning rod (12). The slider (13) and the positioning rod (12) form a sliding guide cooperation. The slider (13) is fixedly connected to the worktable (226). The positioning rod (12) is used to provide guidance and support for the lifting and lowering movement of the worktable (226).

7. A circulating filter slag removal machine according to claim 1, characterized in that, The bottom of the workbench (226) is provided with a liquid collection chamber that communicates with the drain pipe (225). The liquid collection chamber is located below the first leak hole (222) and surrounds the drain pipe (225). The liquid collection chamber is used to collect the liquid flowing down from the first leak hole (222) and guide it to be discharged through the drain pipe (225).

8. A circulating filter slag removal machine according to claim 1, characterized in that, A pressure gauge (11) is installed on the outer shell (1). The pressure gauge (11) is connected to the inner cavity of the cover (213) through a pressure guiding pipe and is used to monitor the pressure status inside the cover (213) in real time.

9. A circulating filter slag removal machine according to claim 1, characterized in that, A slag receiving vehicle (3) is provided on one side of the outer shell (1). The slag receiving vehicle (3) includes a receiving hopper (31). A receiving tray (32) is fixedly connected to one side of the receiving hopper (31). The receiving hopper (31) is used to receive the filter residue falling from the workbench (226) when the filter paper (53) moves and unloads the slag. The receiving tray (32) is used to receive the filter residue falling from the filter paper (53).

10. A circulating filter slag removal machine according to claim 1, characterized in that, The liquid inlet pipe (214) is provided with a jet pipe (215) that is connected to the air pump (4). The nozzle of the jet pipe (215) is oriented toward the liquid inlet pipe (214) and is used to synchronously jet airflow during liquid transportation.

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