Jet flow centrifugal polishing filter

Abstract

The jet-type centrifugal fine filter consists of a frame, hollow shaft, drive motor, drum, filter screen, sludge collection tank, and backflushing air pipe. The hollow shaft is divided into an inlet area and a sludge discharge area by a partition. The liquid to be treated is pumped to the inlet area of ​​the hollow shaft and then evenly sprayed into the drum through the jet nozzles. Driven by the drive motor, the drum rotates at high speed, generating centrifugal force. Under the action of centrifugal force, the liquid to be treated passes through the filter membrane into the water tank and is then discharged through the drain outlet. Solid waste, protein slime, parasite eggs, and other impurities are intercepted on the inner wall of the filter membrane. High-pressure gas is provided by an air compressor or other air source and enters the backflushing pipe through the air supply pipe. The backflushing gas nozzles backflushe the filter screen, and the impurities adhering to the inner wall of the filter screen fall into the sludge collection tank under the action of the high-pressure gas, and are discharged through the sludge collection tank connecting pipe and the hollow shaft sludge discharge area. This invention can be applied to various fields requiring solid-liquid separation processes, such as chemical, pharmaceutical, medical, brewing, beverage, edible oil, river and lake management, and industrialized aquaculture.

Description

Technical Field

[0001] With the growth of my country's economy, there is an urgent need for a solid-liquid separation device with ultra-high filtration accuracy, large flow rate, self-cleaning function, and no need to replace filter media in fields such as chemical industry, pharmaceutical industry, medical industry, brewing industry, beverage industry, edible oil industry, river and lake management, and industrialized aquaculture. Background Technology

[0002] Existing solid-liquid separation equipment mainly operates through methods such as filtration, centrifugation, and gravity sedimentation. Common filtration equipment includes rotary drum microfilters, which offer high efficiency but suffer from low precision. Centrifugation equipment includes centrifuges, which offer high precision but are less efficient and more expensive. Cartridge filters offer high filtration precision but require frequent filter media replacements. Currently, there is no mature solid-liquid separation equipment that combines all of these advantages. Summary of the Invention

[0003] The purpose of this invention is to address the issue that existing solid-liquid separation equipment cannot simultaneously achieve both efficiency and filtration accuracy. This invention provides a solid-liquid separation device with ultra-high filtration accuracy, high flow rate, self-cleaning function, and no need to replace filter media. This device also boasts advantages such as energy saving, high efficiency, simple operation / maintenance, and small footprint.

[0004] The technical solution of this invention includes a novel jet-type centrifugal fine filter, such as ( Figure 1 As shown in the figure, it includes: (1) drive motor, (2) hollow shaft, (2-1) jet nozzle, (2-2) hollow shaft water inlet area, (2-3) baffle, (2-4) water inlet flange, (2-5) hollow shaft sewage discharge area, (2-6) sewage outlet flange, (3) top cover, (4) backflush pipe, (4-1) backflush nozzle, (4-2) Air pipe connector, (4-3) Plug, (5) Bearing sleeve, (6) Bearing, (7) Sludge tank connecting pipe, (8) Sludge tank, (9) Water pump seat, (10) Roller, (10-1) Roller frame, (10-2) Filter screen, (11) Hollow shaft clamp, (12) Water tank, (13) Hollow shaft seat, (14) Pulley, (15) Belt, (16) Frame, (16-1) Lower crossbeam, (16-2) Upper crossbeam, (16-3) Column, (17) Drain outlet.

[0005] like( Figure 1As shown: The jet centrifugal filter has a frame structure (16) consisting of an upper crossbeam (16-2), a lower crossbeam (16-1), and a column (16-3). The hollow shaft (2) is fixed to the upper crossbeam (16-2) of the frame by a hollow shaft seat (13) and a clamp (11). The hollow shaft (2) is divided into a hollow shaft inlet area (2-2) and a hollow shaft drain area (2-5) by a partition (2-3). The hollow shaft inlet area (2-2) is surrounded by jet nozzles distributed in a 360-degree pattern. 2-1), the hollow shaft inlet area (2-2) is connected to the inlet flange (2-4), and the hollow shaft outlet area (2-5) is connected to the outlet flange (2-6); the hollow shaft outlet area (2-5) is connected to the sludge trough (8) through the sludge trough connecting pipe (7); bearings (6) are installed at both ends of the hollow shaft (2), the bearing (6) at the outlet end of the hollow shaft (2) is connected to the drum (10) through the bearing sleeve (5), and the bearing (6) at the inlet end of the hollow shaft (2) is connected to the drum (10) through the pulley (14).

[0006] like( Figure 3 The roller (10) consists of a roller frame (10-1) and a filter screen (10-2), which are connected by cable ties (10-3).

[0007] like( Figure 4 The filter (10-2) consists of a filter skeleton (10-2.1) and a filter membrane (10-2.2).

[0008] like( Figure 2 As shown: the water pump (18) is connected to the inlet pipe (19) to supply water to the fine filter (24); the water flows through the hollow shaft inlet area (2-2) and is sprayed evenly into the drum (10) at 360° through the jet nozzle (2-1); the drum (10) rotates at high speed under the drive of the drive motor (1) to generate centrifugal force, and the water flows through the filter screen (10-2) under the action of centrifugal force. The clean water flows into the water tank (12) and is discharged through the drain outlet (17); impurities are trapped on the inner wall of the filter screen (10-2), and the high-pressure gas provided by the high-pressure gas source is blown down into the sludge tank (8) through the backwash pipe (4) and the backwash nozzle (4-1), and then discharged through the sludge tank connecting pipe (7) and the hollow shaft sewage drainage area (2-5); the solid-liquid separation work is completed.

[0009] The beneficial effects of this invention are as follows: It improves wastewater filtration accuracy by utilizing filter membranes with a mesh size of up to 1000. Centrifugal force enables the device to achieve a large filtration flow rate under high mesh conditions, simultaneously achieving both high flow rate and high filtration accuracy. The unique hollow shaft design, using baffles to divide the hollow shaft into an inlet and outlet zone, allows the hollow shaft to simultaneously function as a water flow channel, wastewater discharge channel, and central shaft, simplifying the equipment structure while ensuring stable operation. The high-permeability backwash cleaning mesh, utilizing high-pressure gas, overcomes the adhesion of contaminants caused by centrifugal force. Compared to high-pressure water backwashing, this method offers higher cleaning efficiency, produces less wastewater, and results in lower moisture content in solid waste, creating superior conditions for subsequent solid waste treatment. The highly efficient filtration capacity more thoroughly separates solid waste, organic matter, protein slime, and parasite eggs from wastewater, thereby blocking further decomposition and oxidation of organic matter and inhibiting the transmission of parasites, significantly reducing the pressure on subsequent water treatment processes. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of a jet centrifugal fine filter.

[0011] Figure 2 A schematic diagram of the supporting facilities and installation for jet centrifugal fine filtration; Figure 3 This is a diagram of the drum structure. Figure 4 This is a diagram of the filter structure.

Claims

1. A jet-type centrifugal fine filter, comprising (1) a drive motor, (2) a hollow shaft, (2-1) a jet nozzle, (2-2) a hollow shaft water inlet area, (2-3) a baffle plate, (2-5) a hollow shaft sewage discharge area, (4) a backwash pipe, (4-1) a backwash nozzle, (7) a sludge collection tank connecting pipe, (8) a sludge collection tank, (10) a drum, (10-2) a filter screen, (12) a water tank, (17) a drain outlet, (18) a water pump, and (22) an air supply pipe; characterized in that: A water pump (18) is connected to an inlet pipe to deliver liquid to a hollow shaft (2). The liquid is evenly sprayed into a drum (10) through a jet nozzle (2-1) on the hollow shaft (2). The drum (10) rotates at high speed under the drive of a motor (1), generating centrifugal force. The liquid to be treated passes through a filter membrane into a water tank (12) under the action of centrifugal force, and is then discharged through a drain outlet (17). Solid waste, protein mucus, parasite eggs and other impurities are intercepted by a filter screen (10-2) on the inner wall of the drum (10). High-pressure gas enters a backflushing pipe (4) through a gas supply pipe (22), and backflushes the filter screen (10-2) through a backflushing nozzle (4-1). Impurities attached to the inner wall of the filter screen (10-2) are blown off into a sludge collection tank (8) under the action of high-pressure gas, and discharged through a sludge collection tank connecting pipe (7) and a hollow shaft drainage area (2-5). This invention is applicable to any liquid.

2. The jet centrifugal fine filter according to claim 1, characterized in that... The hollow shaft (2) serves as both a water pipe and a central shaft.

3. The jet centrifugal fine filter according to claim 1, characterized in that... The hollow shaft (2) is divided into a hollow shaft water inlet area (2-2) and a hollow shaft sewage discharge area (2-5) by a partition (2-3).

4. The jet centrifugal fine filter according to claim 1, characterized in that... After the water flows into the hollow shaft water inlet area (2-2), it is sprayed onto the drum (10).

5. The jet centrifugal fine filter according to claim 1, characterized in that... Under the action of centrifugal force, the liquid to be treated is discharged from the drum (10), while solid waste and other harmful substances are intercepted by the filter screen (10-2).

6. The jet centrifugal fine filter according to claim 1, characterized in that... High-pressure gas is sprayed into the drum (10) through the backflush pipe (4) to clean the filter screen.

7. The jet centrifugal fine filter according to claim 1, characterized in that... The sludge collection trough (8) is connected to the hollow shaft drainage area (2-5).

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