A new self-cleaning filter

Abstract

The utility model discloses a novel self-cleaning filter. Including the casing, the hollow rotating shaft is arranged horizontally in the casing, the hollow part of hollow rotating shaft is linked with the water outlet pipe / back flush pipe, the horizontal multilayer micropore filter is arranged coaxially on the hollow rotating shaft, the water outlet of multilayer micropore filter is linked with the hollow part of hollow rotating shaft, and the cleaning device is arranged in the casing and corresponds to the horizontal multilayer micropore filter. The utility model discloses through the compression device and forms the compact pore, has the micron grade filter channel, and the pore is smaller from outside to inside, has the filtration depth, can high -efficient filtration solid impurity, through the loosening compression device, back flush, with the brush suction nozzle cleaning, can effectively peel off the adhered impurity on the horizontal multilayer micropore filter, reduces the risk of blockage.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment, specifically relating to a novel self-cleaning filter. 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 advanced treatment, industrial circulating water systems, rainwater reuse, and landscape water purification. Traditional filtration technologies include sand filtration, activated carbon filtration, and membrane separation. Among these, cloth filter beds are favored due to their compact structure, small footprint, and high degree of automation. Cloth filter beds intercept particulate matter through micron-level fiber filter cloth (typically with a precision of 5-20μm), achieving high effluent quality (SS≤5mg / L), and are particularly suitable for wastewater treatment plant upgrades or reclaimed water treatment projects.

[0003] However, significant technical bottlenecks still exist in the actual operation of cloth filter beds:

[0004] (1) Problem of easy clogging: The surface of the filter cloth is easily adhered to by sticky substances (such as grease, biofilm) or fine particles (such as chemical flocculants), which leads to a rapid increase in filtration resistance and increased backwashing energy consumption. Especially when treating water with high turbidity or containing algae, the pores of the filter cloth are easily completely blocked, requiring frequent shutdowns for chemical cleaning, which seriously affects the operating efficiency.

[0005] (2) Incomplete cleaning: Traditional backwashing mode (water flushing + mechanical scraping) is difficult to completely remove the impurities trapped deep in the filter cloth. Long-term accumulation will lead to a permanent decrease in the water permeability of the filter cloth, and even damage to the fiber structure.

[0006] (3) Short working cycle: Due to the limited dirt holding capacity of the filter cloth, the single filtration cycle usually only lasts for 12-48 hours. It is not well adapted to fluctuating water quality (such as combined sewage during the rainy season), and requires supporting enhanced pretreatment (such as sedimentation and flotation), which increases the complexity of the system and investment costs. Utility Model Content

[0007] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a novel self-cleaning filter. It integrates sedimentation and filtration functions.

[0008] To achieve the above objectives, the present invention provides a novel self-cleaning filter, comprising a housing, wherein a hollow rotating shaft is horizontally arranged within the housing, and the hollow portion of the hollow rotating shaft is connected to a water outlet pipe / backwash pipe.

[0009] A horizontal multi-layer microporous filter is coaxially arranged on the hollow rotating shaft; the outlet of the multi-layer microporous filter is connected to the hollow part of the hollow rotating shaft.

[0010] A cleaning device is provided inside the housing corresponding to the horizontal multilayer microporous filter.

[0011] Furthermore, the multilayer microporous filter is composed of several layers of annular corrugated plates connected in series, and the annular corrugated plates are pressed together by a pressing device to form micron-level filtration channels.

[0012] Furthermore, below the multi-layer microporous filter inside the shell is a sedimentation zone, with a certain slope at the bottom, and the bottom of the slope is connected to the sludge discharge pipe.

[0013] Furthermore, the cleaning device is a brush-equipped nozzle corresponding to the multi-layer microporous filter, and the nozzle is connected to the suction port of a wet and dry vacuum cleaner through a pipe.

[0014] Furthermore, a backwash pipe is provided in connection with the water outlet pipe / backwash pipe, and the backwash pipe is connected to the backwash air pump.

[0015] Furthermore, the backwashing method for the novel self-cleaning filter includes the following steps: loosening the clamping device, turning on the backwashing air pump, and allowing backwashing gas to enter the multi-layer microporous filter through the backwashing pipe and the water outlet / backwash pipe, flushing away the solids between the multi-layer microporous filters; simultaneously, turning on a wet / dry vacuum cleaner, sucking up the solids between the microporous filters through the nozzle, and allowing them to enter the sludge discharge pipe through the sludge suction pipe. Further, the cleaning device is a brush-equipped nozzle corresponding to the multi-layer microporous filter, and the nozzle is connected to the suction port of the wet / dry vacuum cleaner through a pipe.

[0016] This utility model has the following advantages:

[0017] (1) High filtration efficiency: The compaction device forms dense pores with micron-level filtration channels, and the pores become smaller from the outside to the inside, providing filtration depth and enabling efficient filtration of solid impurities.

[0018] (2) High-efficiency anti-clogging design: By loosening the clamping device, backwashing, and cleaning with a brush nozzle, the adhering impurities on the horizontal multi-layer microporous filter can be effectively removed, reducing the risk of clogging;

[0019] (3) Compact structure: The sedimentation zone and the filtration zone are integrated, saving floor space and suitable for space-constrained scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a novel self-cleaning filter according to the present invention.

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a medium-sized annular corrugated plate.

[0022] Figure 3 for Figure 2 The intention of the 'aa' sectional view.

[0023] Figure 4 for Figure 1 Schematic diagram of 1-1 cross section.

[0024] Wherein: 11—reactor; 12—inlet pipe; 13—coagulant dosing pipe; 14—pipe mixer; 15—outlet pipe; 16—sludge discharge pipe; 21—multi-layer microporous filter; 22—filter clamping device; 24—rotating shaft; 25—outlet pipe / backwash pipe; 31—backwash air pump; 32—backwash pipe; 41—brush with suction nozzle; 42—sludge suction pipe; 43—wet and dry vacuum cleaner. Detailed Implementation

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] In the description of this utility model, 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 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.

[0027] 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 utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 As shown, the wastewater in the inlet pipe 12 and the coagulant in the coagulant dosing pipe 13 are mixed through the pipe mixer 14 and enter the reactor 11. After coagulation and sedimentation, the sludge is discharged through the sludge discharge pipe 16. Both the inlet water and the coagulant solution flow by gravity.

[0030] The reactor contains a filter. A multi-layer microporous filter 21 consists of several layers of annular corrugated plates connected in series to form an annular column. Wastewater flows from the side inlet to the center outlet, while clean water flows out from the center of the column. The multi-layer microporous filter is compressed by a pressing device 22. A rotating shaft 24 passes through the annular column and is connected to the multi-layer microporous filter. One end of the shaft extends outside the reactor and is connected to a motor drive; rotation of the shaft drives the filter to rotate. An outlet pipe / backwash pipe 25 is connected to the rotating shaft via a rotary joint and remains stationary; the outlet pipe / backwash pipe is led out through outlet pipe 15.

[0031] like Figures 2 to 4 The diagram shows a cross-sectional and side view of the corrugated plate of a multi-layer microporous filter. It can be seen that each corrugated plate has multiple corrugated protrusions on one side and corresponding corrugated recesses on the other side. When two corrugated plates are fitted together, a micron-level filtration channel is formed between them, with the pore size decreasing from the outside to the inside, providing filtration depth and efficient filtering of solid impurities. To ensure a tight fit between the two corrugated plates, after the plates are threaded onto the rotating shaft, they are pressed together at both ends of the shaft using clamping devices. The clamping devices can be designed as needed; for example, pressure plates and nuts can be used at both ends of the corrugated plates to fix them to the rotating shaft. Water passages are provided on the rotating shaft corresponding to the filter's position. Wastewater, filtered through the micron-level filtration channels, becomes clean water and enters the rotating shaft before being led out. The flocculated sludge is trapped on the circumferential surface and within the filtration channels of the multi-layer microporous filter.

[0032] To clean the sludge on the circumferential surface of the multi-layer microporous filter, a brush 41 is provided on one side of the filter housing. The solids that are filtered and stuck to the filter are brushed off by the brush and discharged through the sludge discharge pipe.

[0033] After filtering for a period of time, backwashing is initiated. During backwashing, the clamping device is loosened, and the backwash air pump 31 is turned on. The backwash air enters the filter through the backwash pipe 32, the drain pipe, and the backwash pipe 25, flushing away the solids between the microporous filters. At the same time, the wet / dry vacuum cleaner 44 is turned on, and the solids between the microporous filters are sucked up through the suction nozzle 42 and enter the sludge discharge pipe through the sludge suction pipe 43.

[0034] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments. 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 protection scope of the present invention.

[0035] 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.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model 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 this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel self-cleaning filter, characterized in that, Includes a housing, within which a hollow rotating shaft is horizontally arranged, the hollow portion of which is connected to a water outlet pipe / backflush pipe; A horizontal multi-layer microporous filter is coaxially arranged on the hollow rotating shaft; the outlet of the multi-layer microporous filter is connected to the hollow part of the hollow rotating shaft. A cleaning device is provided inside the housing corresponding to the horizontal multilayer microporous filter.

2. The novel self-cleaning filter as described in claim 1, characterized in that, The multilayer microporous filter is composed of several layers of annular corrugated plates connected in series, and the annular corrugated plates are pressed together by a pressing device to form micron-level filtration channels.

3. The novel self-cleaning filter as described in claim 1, characterized in that, Below the multi-layer microporous filter inside the shell is a sedimentation zone. The bottom of the sedimentation zone has a certain slope, and the bottom of the slope is connected to the sludge discharge pipe.

4. A novel self-cleaning filter as described in claim 1, characterized in that, The cleaning device is a brush-equipped nozzle corresponding to the multi-layer microporous filter, and the nozzle is connected to the suction port of a wet and dry vacuum cleaner through a pipe.

5. A novel self-cleaning filter as described in claim 1, characterized in that, A backwash pipe is provided in connection with the water outlet pipe / backwash pipe, and the backwash pipe is connected to the backwash air pump.

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