Water filter with automatic cleaning function

Abstract

A water filter with an automatic cleaning function comprises a water filter tank, a water inlet pipeline with a control valve is mounted on one side of the water filter tank, a water outlet pipeline with a control valve is mounted on the other side of the water filter tank, a vertically arranged filter screen is mounted in the water filter tank, and a cleaning tank is communicated with the top of the water filter tank between the filter screen and the water outlet pipeline; a vertically-arranged supporting pipeline is installed in the cleaning box, the top of the supporting pipeline extends to the outer side of the cleaning box, a driving device used for driving the supporting pipeline to move up and down is installed on the cleaning box, a transversely-arranged middle pipeline is installed at the bottom of the supporting pipeline, and one end of the middle pipeline is fixedly communicated with the supporting pipeline. The other end of the middle pipeline is fixedly communicated with a plurality of cleaning pipelines used for being matched with the filter screen, and an ultrasonic vibrator is further installed on the middle pipeline. By breaking through a single physical cleaning mechanism, deep regeneration and long-acting stable operation of the filter screen can be realized.

Description

Technical Field

[0001] This utility model relates to the field of water filter technology, and in particular to a water filter with an automatic cleaning function. Background Technology

[0002] Driven by the Industry 4.0 and smart manufacturing trends, industrial water use scenarios are placing higher demands on the performance of filtration equipment. Currently, most mainstream water filters rely on physical interception of impurities through filter screens. However, their technological bottlenecks are becoming increasingly apparent: the continuous trapping of suspended solids, colloids, and organic matter on the filter screen surface forms a filter cake layer, leading to a reduction in effective filtration area and an increase in transmembrane pressure difference. This ultimately results in decreased filtration efficiency and fluctuations in effluent water quality. More seriously, filter screen pore blockage exacerbates the risk of microbial growth. If cleaning is not timely, it may cause filter bed caking or even secondary pollution, severely threatening industrial production safety.

[0003] Although some existing water filtration equipment has introduced backwashing function, its technical principle is limited to brief reverse water flow rinsing, which has low efficiency in removing adhesive pollutants (such as oil sludge and biofilm). Furthermore, as the service life is extended, the filter flux recovery rate decreases exponentially, forcing the equipment to maintain performance by increasing the backwashing frequency. This directly leads to water waste (the water consumption of a single backwash can reach 5%-10% of the filtration volume) and equipment lifespan reduction, making it difficult to meet the water and energy conservation needs of modern industry. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a water filter with an automatic cleaning function that can achieve deep regeneration of the filter screen and long-term stable operation by breaking through the single physical cleaning mechanism.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution. This utility model is a water filter with an automatic cleaning function, including a filter tank, an inlet pipe with a control valve installed on one side of the filter tank, and an outlet pipe with a control valve installed on the other side of the filter tank. A vertically arranged filter screen is installed inside the filter tank. A cleaning tank is connected to the top of the filter tank between the filter screen and the outlet pipe. A vertically arranged support pipe is installed inside the cleaning tank, with its top extending to the outside of the cleaning tank. A driving device for driving the support pipe to move up and down is installed on the cleaning tank. A reciprocating dynamic seal is installed at the connection between the support pipe and the cleaning tank. A horizontally arranged intermediate pipe is installed at the bottom of the support pipe, with one end fixedly connected to the support pipe and the other end fixedly connected to several cleaning pipes for cooperating with the filter screen. An ultrasonic transducer is also installed on the intermediate pipe.

[0006] The technical problem to be solved by this utility model can also be further achieved by the following technical solution: For the water filter with automatic cleaning function described above, a gate and a drive cylinder are installed at the connection between the cleaning tank and the filter tank to drive the gate to move laterally back and forth to control the opening and closing of the connection between the cleaning tank and the filter tank.

[0007] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the water filter with automatic cleaning function described above, the driving device is a cylinder, which is vertically installed on the water filter tank, and the piston rod end of the cylinder is connected to the support pipe.

[0008] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the water filter with automatic cleaning function described above, the cleaning pipe is arranged longitudinally, and several cleaning nozzles are also installed on the cleaning pipe, with the spray direction of the cleaning nozzles all facing the filter screen.

[0009] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the water filter with automatic cleaning function described above, there are 2-3 cleaning pipes arranged side by side, and each cleaning pipe is equipped with 3-5 cleaning nozzles.

[0010] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: for the water filter with automatic cleaning function described above, the support pipe is connected to the external cleaning water supply pipe through the water inlet hose.

[0011] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the water filter with automatic cleaning function described above, a sewage discharge pipe with a control valve is also connected to the bottom of the water filter tank between the water inlet pipe and the filter screen.

[0012] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: For the water filter with automatic cleaning function described above, both the filter tank and the cleaning tank are rectangular, and transparent windows are also installed on the filter tank and the cleaning tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This water filter breaks through the limitations of traditional single physical cleaning methods. By combining mechanical scraping and ultrasonic cavitation effects, it can more comprehensively and deeply remove impurities and blockages from the filter screen surface. This not only improves the filtration efficiency of the filter screen but also extends its service life, reducing the performance degradation or replacement needs caused by filter screen blockage.

[0015] 2. This utility model can automatically clean the filter screen during operation through the automatic cleaning function, without the need for frequent manual intervention, thereby ensuring the long-term stable operation of the filter. It not only improves the degree of automation, but also significantly reduces maintenance costs and downtime, which is especially important for occasions that require continuous water supply. At the same time, long-term stable operation also means less water waste and higher energy efficiency.

[0016] 3. This water filter, through a continuous and effective cleaning mechanism, ensures that the filter screen always maintains good filtration performance, thereby effectively intercepting suspended solids, particulate matter and other impurities in the water, and improving the quality of the output water. This is of great significance for occasions that require high-quality water (such as industrial production, drinking water treatment, etc.), and can ensure the smooth operation of the production process and the safety of people's water use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a diagram showing one usage state of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Reference Figure 1-2 A water filter with an automatic cleaning function includes a filter tank 1, which serves as the core filtration container, holding a filter screen 2 and the water to be filtered. This allows the water to fully contact the filter screen 2 within the filter tank 1, achieving impurity interception and water purification. One side of the filter tank 1 is equipped with an inlet pipe 3 with a control valve, and the other side is equipped with an outlet pipe 4 with a control valve. The inlet pipe 3 introduces the water to be filtered into the filter tank 1, and the inlet flow rate can be adjusted according to actual needs via the control valve. During equipment maintenance and cleaning, the valve can be closed to cut off the water supply and ensure operational safety. The water filtered by the filter screen 2 is discharged from the filter tank 1 through the outlet pipe 4, and the outlet can be controlled by the control valve.

[0021] A vertically arranged filter screen 2 is installed inside the water filter tank 1. The filter screen 2 is the core component of the filtration process. When water flows through the filter screen 2, impurities are intercepted on the surface or in the pores of the filter screen 2, while clean water enters the subsequent pipe through the filter screen 2. The vertical installation of the filter screen 2 helps impurities to settle naturally under the action of gravity, reducing the accumulation on the surface of the filter screen and extending the service life of the filter screen 2.

[0022] A cleaning tank 5 is connected to the top of the water filter tank 1 between the filter screen 2 and the outlet pipe 4. A vertically arranged support pipe 6 is installed inside the cleaning tank 5, with its top extending to the outside of the cleaning tank 5. A drive device 7 for moving the support pipe 6 up and down is installed on the cleaning tank 5. A reciprocating dynamic seal is installed at the junction of the support pipe 6 and the cleaning tank 5. A horizontally arranged intermediate pipe 8 is installed at the bottom of the support pipe 6, with one end fixedly connected to the support pipe 6 and the other end fixedly connected to several cleaning pipes 9 for cooperating with the filter screen 2. The cleaning tank 5 provides operating space for cleaning the filter screen 2. Through its connection with the water filter tank 1, the cleaning pipes 9 can approach the filter screen 2, thus achieving the cleaning function of the filter screen 2. Specifically:

[0023] The cleaning pipe 9 is used to directly spray cleaning water onto the filter screen 2 to achieve cleaning treatment. In order to improve the cleaning effect, the cleaning pipe 9 is arranged vertically, and several cleaning nozzles 10 are also installed on the cleaning pipe 9. The spray direction of the cleaning nozzles 10 is all directed towards the filter screen 2. Preferably, there are 2-3 cleaning pipes 9 arranged side by side, and each cleaning pipe 9 is equipped with 3-5 cleaning nozzles 10.

[0024] The intermediate pipe 8 is used to support the installation of the cleaning pipe 9, and also serves as a distribution channel for cleaning water, so as to evenly distribute the cleaning water introduced by the support pipe 6 to each cleaning pipe 9, ensuring that the cleaning water can cover the entire surface of the filter screen 2.

[0025] The support pipe 6 serves as a support structure and can drive the cleaning pipe 9 to adjust its position under the drive of the drive device 7. The support pipe 6 is connected to the external cleaning water supply pipe through the water inlet hose 16, so that the inside of the support pipe 6 provides a channel for cleaning water, allowing the cleaning water to smoothly enter the cleaning pipe 9 from the external cleaning water supply pipe.

[0026] The drive device 7 is used to provide power for adjusting the position of the cleaning pipe 9. Preferably, the drive device 7 is a cylinder, which is vertically mounted on the water filter box 1, and the piston rod end of the cylinder is connected to the support pipe 6. The reciprocating dynamic seal is used to ensure the sealing of the cleaning box 5.

[0027] To ensure the independence of the cleaning tank 5 and the filter tank 1, a gate 12 and a drive cylinder 13 are installed at the connection between the cleaning tank 5 and the filter tank 1. The drive cylinder 13 is used to drive the gate 12 to move laterally back and forth to control the opening and closing of the connection between the cleaning tank 5 and the filter tank 1. During the filtration process, the gate 12 is closed to cut off the connection between the cleaning tank 5 and the filter tank 1 and prevent the cleaning water from cleaning the tank 5. During the cleaning operation, the gate 12 is opened to allow the cleaning pipe 9 to enter the filter tank 1 to clean the filter screen 2.

[0028] To further improve the cleaning effect on filter screen 2, an ultrasonic transducer 11 is installed on the intermediate pipe 8. This transducer converts electrical energy into mechanical vibration energy to generate high-frequency ultrasonic waves. Utilizing the cavitation effect of ultrasonic waves, tiny bubbles are formed on the surface of filter screen 2. When these bubbles burst, they generate a powerful impact force that can peel off tiny impurities and stubborn dirt from the filter screen pores, further improving the cleaning effect. It is particularly effective against difficult-to-clean impurities such as colloids and biofilms. A cable opening is provided at the top of the cleaning tank 5 to facilitate power supply to the ultrasonic transducer 11. A waterproof cable connector is installed at the cable opening to ensure a tight seal.

[0029] At the bottom of the water filter tank 1 between the water inlet pipe 3 and the filter screen 2, there is also a drain pipe 15 with a control valve, which is used to discharge the wastewater containing impurities into the water filter tank 1 through the drain pipe 15 after cleaning, so as to keep the water filter tank 1 clean.

[0030] Both the filter tank 1 and the cleaning tank 5 are rectangular, which facilitates providing a closed space for the entire filtration and cleaning process. Transparent windows 14 are also installed on the filter tank 1 and the cleaning tank 5, allowing operators to directly observe the internal operation of the filter tank 1 and the cleaning tank 5, including the degree of clogging of the filter screen 2, the working status of the cleaning pipe 9, and the discharge of wastewater.

[0031] The specific usage process of this water filter is as follows:

[0032] 1. Fix the filter tank 1 and the cleaning tank 5 on the horizontal foundation according to the design requirements. Connect the inlet pipe 3, the outlet pipe 4 and the sewage pipe through the flange. Connect the support pipe 6 to the external cleaning water supply pipe through the inlet hose 16 to ensure a tight seal and no leakage.

[0033] 2. Open the control valve of the inlet pipe 3, and the water flows into the filter tank 1, is filtered by the filter screen 2, and then output to the outside through the outlet pipe 4, while impurities are intercepted in the filter tank 1.

[0034] 3. When it is necessary to clean the filter screen 2 (generally depending on the regularity or the condition of the filter screen 2 surface blockage), first close the control valves of the inlet pipe 3 and the outlet pipe 4, then open the gate 12, and then drive the support pipe 6 to lower the cleaning pipe 9 into the filter tank 1. At the same time, the support pipe 6 supplies cleaning water to the cleaning pipe 9, and the cleaning nozzle 10 forms a fan-shaped water curtain to impact the filter screen surface and pores.

[0035] Secondly, the cleaning pipe 9 can move up and down at a speed of 0.5-2m / min to ensure full coverage cleaning of the filter screen 2;

[0036] 4. After the water level in the filter tank 1 is close to full, turn on the ultrasonic transducer 11. The ultrasonic waves generate high-frequency vibrations, forming micron-sized cavitation bubbles on the surface of the filter screen 2 to remove stubborn impurities such as colloids and biofilms from the pores of the filter screen.

[0037] By overlapping the mechanical scouring and ultrasonic cavitation actions over time, experiments have verified that the removal efficiency for 0.1-10μm particles is increased by more than 60% compared to a single method.

[0038] 5. After cleaning, open the control valve of the sewage pipe 15. The sewage containing impurities will be discharged through the bottom of the filter tank 1. Then, clean the pipe 9 and the gate 12 and reset them. Then, open the control valves of the inlet pipe 3 and the outlet pipe 4 to continue the water filtration operation.

Claims

1. A water filter with automatic cleaning function, characterized in that: The system includes a water filter tank, with an inlet pipe equipped with a control valve on one side and an outlet pipe equipped with a control valve on the other side. A vertically arranged filter screen is installed inside the filter tank. A cleaning tank is connected to the top of the filter tank between the filter screen and the outlet pipe. A vertically arranged support pipe is installed inside the cleaning tank, with its top extending to the outside of the cleaning tank. A drive device for moving the support pipe up and down is installed on the cleaning tank. A reciprocating dynamic seal is installed at the connection between the support pipe and the cleaning tank. A horizontally arranged intermediate pipe is installed at the bottom of the support pipe, with one end fixedly connected to the support pipe and the other end fixedly connected to several cleaning pipes for use with the filter screen. An ultrasonic transducer is also installed on the intermediate pipe.

2. The water filter with automatic cleaning function according to claim 1, characterized in that: A gate and a drive cylinder are installed at the connection between the cleaning tank and the filter tank to control the opening and closing of the connection between the cleaning tank and the filter tank.

3. The water filter with automatic cleaning function according to claim 1, characterized in that: The driving device is a cylinder, which is vertically mounted on the water filter tank, and the piston rod end of the cylinder is connected to the support pipe.

4. The water filter with automatic cleaning function according to claim 1, characterized in that: The cleaning pipe is arranged longitudinally, and several cleaning nozzles are also installed on the cleaning pipe, with the spray direction of the cleaning nozzles all facing the filter screen.

5. The water filter with automatic cleaning function according to claim 4, characterized in that: There are 2-3 cleaning pipes arranged side by side, one above the other, and each cleaning pipe is equipped with 3-5 cleaning nozzles.

6. The water filter with automatic cleaning function according to claim 1, characterized in that: The support pipe is connected to an external cleaning water supply pipe via a water inlet hose.

7. The water filter with automatic cleaning function according to claim 1, characterized in that: At the bottom of the water filter box, between the inlet pipe and the filter screen, there is also a drain pipe with a control valve.

8. The water filter with automatic cleaning function according to claim 1, characterized in that: Both the water filter tank and the cleaning tank are rectangular in shape, and transparent viewing windows are installed on them.

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