Multilayer microfiltration device

Abstract

The invention discloses a multi-layer microfiltration device. Comprising a plurality of automatic micro-sewage filter screen cleaning devices which are sequentially stacked from top to bottom; each micro-sewage filter screen automatic cleaning device is characterized in that a filter screen assembly is arranged in the middle of the frame body; cleaning slide rails are arranged on the frame body on the two sides of the filter screen assembly; a cleaning assembly corresponding to the filter screen assembly is arranged on the cleaning slide rail; the cleaning assembly reciprocates along the slide rail under the action of a driving device so as to clean the filter screen assembly; in every two adjacent automatic micro-sewage filter screen cleaning devices, the hole diameter of the filter screen assembly on the upper layer is larger than that of the filter screen assembly on the lower layer. Multi-layer gradient filtering is adopted, and the filtering effect is good; the device is compact in structure, high in automation degree and suitable for the field of micro-sewage treatment.

Description

Technical Field

[0001] This invention relates to the field of water treatment filtration technology, and in particular to a multi-layer microfiltration device for a micro-wastewater filtration system. Background Technology

[0002] In the field of water treatment, filtration is one of the key processes for removing suspended solids, colloids, and microorganisms, and it is widely used in municipal wastewater deep treatment, industrial circulating water systems, rainwater reuse, and landscape water purification. Traditional filtration technologies include sand filtration, activated carbon filtration, and membrane separation, among which filter cloth and other filter mesh structures are favored due to their compact structure and small footprint.

[0003] Existing micro-wastewater treatment devices typically use fixed filters to trap suspended particles in the wastewater. Over time, particles accumulate on the filter surface, causing blockages, leading to decreased water flow capacity, increased energy consumption, and the need for manual shutdown and cleaning, resulting in high maintenance costs and disruption to continuous operation. Some existing technologies use single-flushing online cleaning, but this suffers from problems such as cleaning dead zones, high water consumption, high energy consumption, and poor effectiveness. Therefore, there is an urgent need for a compact, highly efficient, and fully automated filter cleaning device. Summary of the Invention

[0004] To overcome the above-mentioned defects, the purpose of this invention is to provide a multi-layer microfiltration device that solves the problems of manual disassembly and cleaning, incomplete cleaning, and operation interruption caused by filter clogging in the prior art, while improving sewage filtration efficiency and reducing the floor space required.

[0005] To achieve the above objectives, the multilayer microfiltration device of the present invention includes multiple automatic cleaning devices for micro-sewage filter screens, wherein the multiple automatic cleaning devices for micro-sewage filter screens are stacked sequentially from top to bottom; Each micro-wastewater filter automatic cleaning device includes: A filter assembly is provided in the middle of the frame; Cleaning slide rails are provided on the frame on both sides of the filter assembly; A cleaning component is provided on the cleaning slide rail corresponding to the filter assembly. The cleaning component reciprocates along the slide rail under the action of the driving device to clean the filter assembly. In the two adjacent micro-sewage filter screen automatic cleaning devices, the outlet of the upper micro-filtration device is connected to the inlet of the lower micro-filtration device, and the pore size of the filter screen assembly of the upper micro-filtration device is larger than that of the filter screen assembly of the lower micro-filtration device.

[0006] Furthermore, the cleaning assembly includes a bracket; a cleaning roller is provided at the lower end of the bracket corresponding to the cleaning slide rail; a cleaning nozzle is installed on the bracket; and the cleaning nozzle is connected to an air pipe and / or a water pipe through a pipe.

[0007] Furthermore, filter slide rails are provided on both sides of the frame, and the filter assembly is slidably disposed within the filter slide rails on both sides.

[0008] Furthermore, the filter assembly includes a filter screen, and filter screen rollers adapted to filter screen slide rails are provided on both sides of the filter screen.

[0009] Furthermore, a sewage diversion channel is provided on the outlet side of the supporting mesh plate.

[0010] Furthermore, the cleaning assembly includes a U-shaped bracket; rollers are provided at the middle of both sides of the bracket corresponding to the cleaning slide rail, and the rollers are slidably disposed within the cleaning slide rail; A water cleaning nozzle is provided above the support and on the upper surface of the filter assembly; the water cleaning nozzle is connected to a water pipe; an air purging nozzle is provided below the support and on the lower surface of the filter assembly; the air purging nozzle is connected to an air pipe through a pipeline.

[0011] Furthermore, a splash guard is provided on the front support of the water cleaning nozzle.

[0012] The present invention has the following advantages: 1) Multi-layer microfiltration process improves wastewater filtration efficiency and reduces floor space; 2) The multi-layer and multi-stage filtration process adapts to water quality fluctuations, resulting in higher water purity after filtration. 3) The combination of water flushing and air flushing ensures thorough cleaning and significantly reduces water consumption; 4) The nozzle can reciprocate with the roller assembly to achieve full-width cleaning of the filter without dead angles; 5) Fully automatic control can be achieved by setting water level detection and limit switches, without the need for manual intervention; 6) Modular structure, drawer-style filter installation, convenient maintenance; 7) Suitable for filters with pore sizes of 35-500μm, with strong versatility. Attached Figure Description

[0013] Figure 1 This is an isometric view of an embodiment of the present invention; Figure 2 This is an isometric view of the automatic cleaning unit for the micro-sewage filter screen according to an embodiment of the present invention; Figure 3 This is an exploded view of the automatic cleaning unit for the micro-sewage filter screen according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the automatic cleaning unit for the micro-sewage filter screen according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the air-water cleaning assembly according to an embodiment of the present invention.

[0014] Explanation of reference numerals in the attached figures: 1-Filter assembly; 2-Frame; 3-Slide rail; 4-Air-water cleaning assembly; 5-Roller assembly; 6-Drive device. Detailed Implementation

[0015] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0016] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 invention 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 invention.

[0017] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Preferred embodiment: like Figure 1-5 As shown, a multi-layer microfiltration device includes several automatic cleaning units A for micro-wastewater filter screens. These units A are stacked vertically to form a multi-layer filtration structure. In each automatic cleaning unit, wastewater passes through the filter screen from above via spraying or other methods, leaving sludge on the screen. The filtered wastewater falls below the screen. An air-water cleaning assembly is mounted on a slide rail via rollers and reciprocates along the rail under the action of a drive device, thereby cleaning the sludge on the filter screen. In adjacent automatic cleaning units, the outlet of the upper microfiltration unit is connected to the inlet of the lower microfiltration unit, and the pore size of the filter screen assembly in the upper microfiltration unit is larger than that in the lower microfiltration unit.

[0020] The automatic cleaning unit for the micro-wastewater filter screen includes a filter screen assembly 1, a frame 2, a slide rail 3, an air-water cleaning assembly 4, a roller assembly 5, and a drive device 6. The filter screen assembly 1 and the slide rail 3 are mounted on the frame 2, and the air-water cleaning assembly 4 is mounted on the slide rail 3 via the roller assembly 5, and can reciprocate along the slide rail 3 under the action of the drive device 6.

[0021] The filter assembly 1 includes a filter screen 11, small rollers 12, a filter screen slide rail 13, and a sewage guide channel 14. The filter screen slide rail 13 is usually arranged on both sides and installed on the frame 2. The small rollers 12 are located on both sides of the filter screen 11 and can slide in a drawer-like manner in the filter screen slide rail 13 for easy manual or automatic replacement. The sewage guide channel 14 is installed on the front side of the filter screen 11. The particles trapped and accumulated on the filter screen 11 form concentrated sewage under the spray of the air-water cleaning assembly 4, which is discharged or collected along the sewage guide channel 14 for resource reuse.

[0022] The air-water cleaning assembly 4 consists of a water cleaning nozzle 41, a water cleaning bracket 42, an air purging nozzle 43, an air purging bracket 44, a splash guard 45, and a connecting member 46. The water cleaning nozzle 41 is located above the filter assembly 1 and mounted on the water cleaning bracket 42; the air purging nozzle 43 is located below the filter assembly 1 and mounted on the air purging bracket 44; the water cleaning bracket 42 and the air purging bracket 44 are fixed to the connecting member 46 by fasteners, forming a U-shaped structure; the splash guard 45 is located in front of the water cleaning nozzle 41 to prevent water vapor from splashing during purging. In actual use, a water level detection device can be installed above the filter screen. By detecting the water level on the filter screen, the "water flushing + air flushing" combined cleaning is automatically activated, achieving online, efficient, and thorough cleaning of the filter screen, solving the problems of manual disassembly and incomplete cleaning required by traditional technologies, while improving wastewater filtration efficiency and reducing floor space. This invention has a compact structure and a high degree of automation, making it suitable for the field of micro-wastewater treatment.

[0023] The roller assembly 5 includes a roller 51 and a roller bracket 52, and the air-water cleaning assembly 4 is mounted on the roller bracket 52; the driving device 6 is connected to the air-water cleaning assembly 4 and drives the air-water cleaning assembly 4 to reciprocate along the slide rail 3. The frame 2 is equipped with a water receiving tray 21 and a sludge tank 22. The water receiving tray 21 is located below the filter screen 11 of the filter screen assembly 1, and the sludge tank 22 is located below the sewage diversion channel 14 of the filter screen assembly 1.

[0024] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Many other changes and modifications made without departing from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0025] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0026] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multilayer microfiltration device, characterized in that, It includes multiple automatic cleaning devices for micro-wastewater filters, which are stacked sequentially from top to bottom; Each micro-wastewater filter automatic cleaning device includes: A filter assembly is provided in the middle of the frame; Cleaning slide rails are provided on the frame on both sides of the filter assembly; A cleaning component is provided on the cleaning slide rail corresponding to the filter assembly. The cleaning component reciprocates along the slide rail under the action of the driving device to clean the filter assembly. In the two adjacent micro-sewage filter screen automatic cleaning devices, the outlet of the upper micro-filtration device is connected to the inlet of the lower micro-filtration device, and the pore size of the filter screen assembly of the upper micro-filtration device is larger than that of the filter screen assembly of the lower micro-filtration device.

2. The multilayer microfiltration device according to claim 1, characterized in that, The cleaning assembly includes a bracket; cleaning rollers are provided at the lower end of the bracket corresponding to the cleaning slide rail; a cleaning nozzle is installed on the bracket; the cleaning nozzle is connected to an air pipe and / or a water pipe through a pipe.

3. The multilayer microfiltration device according to claim 1, characterized in that, Filter slide rails are provided on both sides of the frame, and the filter assembly is slidably disposed within the filter slide rails on both sides.

4. The multilayer microfiltration device according to claim 1, characterized in that, The filter assembly includes a filter screen, and filter screen rollers adapted to filter screen slide rails are provided on both sides of the filter screen.

5. The multilayer microfiltration device as described in claim 4, characterized in that, A sewage diversion channel is provided on the water outlet side of the supporting mesh plate.

6. The multilayer microfiltration device according to claim 1, characterized in that, The cleaning assembly includes a U-shaped bracket; rollers are provided at the middle of both sides of the bracket corresponding to the cleaning slide rail, and the rollers are slidably disposed within the cleaning slide rail; A water cleaning nozzle is provided above the support and on the upper surface of the filter assembly; the water cleaning nozzle is connected to a water pipe; an air purging nozzle is provided below the support and on the lower surface of the filter assembly; the air purging nozzle is connected to an air pipe through a pipeline.

7. The multilayer microfiltration device according to claim 1, characterized in that, A splash guard is provided on the front bracket of the water cleaning nozzle.

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