A new filtering device

Abstract

The utility model relates to solid -liquid separation technical field, concretely relates to a novel filter device. The utility model discloses a novel filter device, including filter portion, the filter portion includes filter container, installs filter assembly in filter container inside, forms the drainage cavity of containing liquid between filter container and filter assembly, compressed air supply part, compressed air supply part is linked together with drainage cavity inside, and the compressed air is transported to drainage cavity, and the backflush is formed to filter assembly. In the technical scheme, the inventor sets up the drainage cavity between the filter container and the filter assembly, supplies the compressed air at the drainage cavity, and the liquid in the drainage cavity is disturbed under the action of the compressed air, so that the liquid impacts the filter assembly, and the solid substance attached to the filter assembly falls, solving the problem that the existing filter device cannot clean the filter assembly completely and efficiently.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, specifically to a novel filtration device. Background Technology

[0002] Filtration is the most widely used and traditional method for separating solids and liquids in industrial production. However, during filtration, the continuous accumulation of solid matter on the filter screen can clog its pores, reducing filtration efficiency. Existing technologies disclose various solutions to address filter clogging. For example, patent CN218608370U discloses a microfilter for water circulation filtration. In this solution, the barrel-shaped filter screen is a detachable structure and is rotatably mounted in a container. Multiple fixed nozzles are installed on the upper part of the barrel-shaped filter screen. When cleaning is required, the fixed nozzles backwash the rotating filter screen. During backwashing, because the nozzles are fixed and the filter screen rotates, there are areas on the filter screen that the nozzles cannot reach. In these cases, the filter screen needs to be disassembled and manually washed. This solution requires two steps—backwashing with nozzles and manual disassembly and cleaning—increasing labor intensity and reducing filtration efficiency. Patent CN218686788U discloses an anti-clogging liquid filtration device. The filter component in this solution is a perforated plate, with a pin and a spray assembly on one side of the plate as a backwashing component. When the perforated plate becomes clogged, the pin first clears the filter holes, and then the spray assembly performs backwashing, thus cleaning the filter screen. However, because the water volume from the spray assembly is insufficient to completely clean the filter screen, the problem of incomplete cleaning of the filter plate still exists.

[0003] In the field of solid-liquid separation technology, there is an urgent need for a filtration device that can thoroughly clean the filtration components during the filtration process. Utility Model Content

[0004] To address the problem that existing filtration devices cannot thoroughly and efficiently clean the filter components, this utility model discloses a novel filtration device, including...

[0005] The filtration section includes a filter container and a filter assembly installed inside the filter container, with a drain chamber for containing liquid formed between the filter container and the filter assembly.

[0006] The compressed air supply unit is connected to the inside of the drain chamber and supplies compressed air to the drain chamber to create backflow on the filter assembly.

[0007] In this technical solution, the inventors set up a drain chamber between the filter container and the filter assembly, and supplied compressed air to the drain chamber. The compressed air disturbs the liquid in the drain chamber, thereby causing the liquid to impact the filter assembly and causing the solid material attached to the filter assembly to fall off.

[0008] As a preferred technical solution, the filter assembly is a frustum-shaped structure with a cross-sectional diameter that gradually increases from top to bottom. The upper part of the filter assembly is formed by connecting filter plates with circumferential sealing, and the lower part is formed by connecting filter screens. The sealing plates and filter screens together form a filter chamber for holding the filter material.

[0009] The inventor designed the filter assembly as a frustum-shaped structure with a cross-section that gradually increases from top to bottom, giving it a certain degree of inclination. This allows solid matter adhering to the side walls of the filter assembly to easily detach, reducing clogging. The upper end of the filter assembly consists of a circumferentially sealed filter plate, while the lower end consists of a filter screen. When the liquid level in the filter container is above the filter screen, compressed air compresses the liquid in the drain chamber. The liquid in the drain chamber passes through the filter screen and enters the filter chamber. The liquid level in the filter chamber is higher than that in the drain chamber. As the liquid flows from the drain chamber into the filter chamber, the reverse flow of the liquid impacts the filter screen, resulting in a thorough cleaning of the filter screen and improved filtration efficiency.

[0010] As a preferred technical solution, the compressed air supply unit includes an air compressor and a storage tank connected to the air compressor, wherein the storage tank is connected to the drain chamber via a pipe.

[0011] Compressed air is generated by an air compressor and fed into a storage tank. The compressed air is then transported to the drain chamber through the storage tank and pipelines.

[0012] As a preferred technical solution, a conical collector is connected to the bottom of the filter container, the conical collector is connected to the filter chamber, and a solid discharge pipe is connected to the bottom of the conical collector, with a solid discharge valve installed on the solid discharge pipe.

[0013] Whether solids are discharged is controlled by opening and closing the solid discharge valve.

[0014] As a preferred technical solution, the upper end of the filter container is equipped with a feed pipe that communicates with the filter chamber, and the bottom end of the filter container is connected to a drain pipe at the drain chamber, and a drain valve is installed on the drain pipe.

[0015] As a preferred technical solution, the upper end of the filter container is connected to a liquid inlet pipe and a solid material inlet pipe, which are connected to the filter chamber. The bottom end of the filter container is located at the drain chamber and is connected to a drain pipe, which is equipped with a drain valve.

[0016] As a preferred technical solution, an exhaust valve is installed on the pipe connecting the storage tank and the drain chamber.

[0017] As a preferred technical solution, both the sealing plate and the filter screen are made of stainless steel.

[0018] As a preferred technical solution, the exhaust valve and the drain valve are electrically controlled valves.

[0019] Beneficial effects

[0020] (1) The inventors provided a drain chamber on the outside of the filter assembly and supplied compressed air to the liquid in the drain chamber. The compressed air disturbed the liquid in the drain chamber, which in turn caused the disturbed liquid to impact the filter assembly, causing the solid substances attached to the filter assembly to fall off, thus cleaning the filter assembly.

[0021] (2) The filter component in this technical solution is set as a frustum shape with the cross section gradually increasing from top to bottom, so that the filter component has a certain degree of inclination, and the solid material attached to the side wall of the filter component can easily fall off, reducing the clogging of the filter component.

[0022] (3) The inventor designed the upper end of the filter assembly as a filter plate with a circumferential seal and the lower end as a filter screen with filter holes. When the liquid level in the filter container is above the filter screen, compressed air acts on the liquid in the drain chamber. The liquid in the drain chamber flows from the drain chamber into the filter chamber. The reverse flow of the liquid has a backwashing effect on the filter screen, washing off the solid substances attached to the filter, reducing the clogging of the filter screen and improving the filtration efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure in Example 1.

[0024] 1-Liquid inlet pipe, 2-Solid inlet pipe, 3-Filter assembly, 4-Exhaust valve, 5-Storage tank, 6-Air compressor, 7-Drain pipe, 8-Filter container, 9-Solid drain pipe, 10-Filter plate, 11-Filter screen, 12-Cone collector, 13-Compressed air delivery pipe, 14-Drain chamber, 15-Drain valve, 16-Solid drain valve. Detailed Implementation

[0025] The following is a clear and complete description of the technical solution of this utility model. The described embodiments are only some embodiments of this technical solution, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this technical solution without creative effort are within the protection scope of this utility model.

[0026] Example 1

[0027] like Figure 1 As shown, the novel filtration device in this embodiment includes a filter container 8, a filter assembly 3 installed inside the filter container 8 and forming a drain chamber therebetween, a conical collector 12 fixedly connected to the bottom of the filter container 8, and a compressed air supply unit connected to the upper end of the filter container 8. The upper end of the filter container 8 is connected to the liquid inlet pipe 1, the solid material inlet pipe 2, and the compressed air delivery pipe 13, respectively. The lower end of the filter container 8 is connected to the drain pipe 7, and a drain valve 15 is installed on the drain pipe 7 to control the opening and closing of the drain pipe 7. The liquid inlet pipe 1 is used to transport liquid to the conical filter screen 3, the solid material inlet pipe 2 is used to transport solids to the filter assembly 3, and the compressed air delivery pipe 13 is used to transport compressed air to the drain chamber 14. The filter assembly 3 includes a filter plate 10 and a filter screen 11 fixedly connected to the lower end of the filter plate 10. The filter plate 10 cannot pass through solids and liquids and cannot filter solid-liquid mixtures. The filter screen 11 performs the function of separating solids and liquids. The filter plate 10 and the filter screen 11 together form a filter chamber for holding the filtered material. The filter chamber is connected to a conical collector 12. The cross-sectional diameter of the filter assembly 3 gradually increases from top to bottom, and the inclination gradually decreases, reducing the adhesion of solids to the filter assembly 3 during the solid-liquid separation process. The conical collector 12 is used to collect the solids separated from the solids and liquids, and discharges them through a discharge pipe 9 connected to the bottom of the conical collector 12. The compressed air supply unit includes an air compressor 6 for generating compressed air and a storage tank 5 for storing compressed air. The storage tank 5 is connected to the filter container 8 through a compressed air delivery pipe 13. An exhaust valve 4 is installed on the compressed air delivery pipe 13 to control whether the compressed air is discharged into the filter container 8.

[0028] This embodiment uses solid-liquid separation during the cleaning of slow-release microspheres as an example to specifically illustrate the working principle of the filtration device. The slow-release microspheres are discharged into the filter element 3 of the filter container 8 through the solid feed pipe 2. The cleaning solution for cleaning the microspheres is discharged into the filter element 3 of the filter container 8 through the liquid inlet pipe 1. The slow-release microspheres and the cleaning solution form a solid-liquid mixture in the filter container 8. When the solid-liquid mixture fills the entire filter container 8, the liquid in the solid-liquid mixture flows through the filter screen 11 into the drain chamber 14 due to the filter screen holes. The drain valve 15 is opened, and the filtered liquid is discharged through the drain pipe 7. The drain valve 15 is closed after every 10 minutes, and the exhaust valve 4 is opened for 1 minute to allow compressed air to enter the filter container 8. The compressed air compresses the liquid in the drain chamber 14, causing the liquid in the drain chamber 14 to backflow through the filter screen 11 into the filter element 3. Figure 1 As shown, when compressed air acts on the drain chamber 14, the water level inside the filter assembly 3 is greater than the water level outside the filter assembly 3. When the liquid backflows into the filter assembly 3, it washes away the solid slow-release microspheres attached to the filter screen 11, reducing the clogging of the filter holes on the filter screen 11. At the same time, due to the inclined setting of the filter assembly 3, the solid slow-release microspheres settle in the conical collector 12, which facilitates the collection of the slow-release microspheres. When the liquid level in the filter assembly 3 reaches the junction of the filter plate 10 and the filter screen 11, only the drain valve 15 is opened to drain the liquid, and the exhaust valve 4 is no longer opened to supply compressed air. When the liquid in the drain chamber 14 is drained, the drain valve 15 is closed, and the solid discharge valve 16 is opened to discharge the filtered and separated slow-release microspheres out of the conical collector 12. In this embodiment, the filter device, through the setting of the filter assembly, can reduce the adhesion of solids on the filter plate 11, and the intermittent flushing of the filter screen 11 with compressed air can prevent the filter plate 11 from clogging, thereby improving the filtration efficiency of the filter device.

Claims

1. A novel filtration device, characterized in that, include The filtration section includes a filter container and a filter assembly installed inside the filter container, with a drain chamber for containing liquid formed between the filter container and the filter assembly. The compressed air supply unit is connected to the inside of the drain chamber and supplies compressed air to the drain chamber to create backflow on the filter assembly.

2. The novel filtration device according to claim 1, characterized in that, The filter assembly is a frustum-shaped structure with a cross-sectional diameter that gradually increases from top to bottom. The upper part of the filter assembly is formed by connecting filter plates with circumferential sealing, and the lower part is formed by connecting filter screens. The filter plates and filter screens together form a filter chamber for holding the filter material.

3. The novel filtration device according to claim 2, characterized in that, The compressed air supply unit includes an air compressor and a storage tank connected to the air compressor. The storage tank is connected to the drain chamber via a pipe.

4. The novel filtration device according to claim 3, characterized in that, The bottom of the filter container is connected to a conical collector, which is connected to the filter chamber. The bottom of the conical collector is connected to a solid discharge pipe, and a solid discharge valve is installed on the solid discharge pipe.

5. The novel filtration device according to claim 4, characterized in that, The upper end of the filter container is equipped with a feed pipe that communicates with the filter chamber, and the bottom end of the filter container is connected to a drain pipe at the drain chamber. A drain valve is installed on the drain pipe.

6. The novel filtration device according to claim 5, characterized in that, The upper end of the filter container is connected to a liquid inlet pipe and a solid material inlet pipe, which are connected to the filter chamber. The bottom end of the filter container is located at the drain chamber and is connected to a drain pipe, which is equipped with a drain valve.

7. The novel filtration device according to claim 5 or 6, characterized in that, An exhaust valve is installed on the pipe connecting the storage tank and the drainage chamber.

8. The novel filtration device according to claim 7, characterized in that, Both the filter plate and the filter screen are made of stainless steel.

9. The novel filtration device according to claim 8, characterized in that, The exhaust valve and the drain valve are electrically controlled valves.

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