CN-121971916-A - Vortex self-cleaning filter and filtering method

CN121971916ACN 121971916 ACN121971916 ACN 121971916ACN-121971916-A

Abstract

The invention relates to a vortex self-cleaning filter and a filtering method, wherein the filter comprises a tank body with an opening on the top surface, an upper cavity and a lower cavity which are communicated up and down are arranged in the tank body, a filter screen cylinder is arranged in the lower cavity, the opening on the top surface of the tank body is plugged through the upper cover, a core rod is fixed on the inner wall of the upper cover, the core rod is vertically inserted into the lower cavity through the upper cavity, guide vanes which are spirally distributed are arranged on the outer wall of the core rod, the upper ends of the guide vanes are positioned in the upper cavity, the upper water inlets of the guide vanes are opposite to a water inlet, the lower ends of the guide vanes are positioned in the lower cavity, and the water outlets of the lower ends of the guide vanes are opposite to the filter screen cylinder. The vortex self-cleaning filter has the core that 'heavy impurities are firstly separated by rotation and then fine particles are filtered by a net', so that the grading treatment of the particles is realized, and the service life of the filter screen is obviously prolonged. And the self-cleaning capability is provided, the rotary water flow continuously washes the filter screen cylinder for 360 degrees, the particle adhesion is reduced, the blocking rate is reduced, the cleaning efficiency is high, and the blocking is slow.

Inventors

CHEN ZHONG
LI YALIN
Tao Anxue
ZHANG HONG
LIU JING
ZHANG LIN

Assignees

山东润浩水利科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. A vortex self-cleaning filter is characterized by comprising a tank body with an opening on the top surface, an upper cavity and a lower cavity which are vertically communicated are arranged in the tank body, a filter screen cylinder is arranged in the lower cavity, a water inlet is arranged on the side wall of the tank body corresponding to the upper cavity, a water outlet is arranged on the side wall of the tank body corresponding to the lower cavity, a drain outlet is arranged at the bottom of the lower cavity, the opening on the top surface of the tank body is plugged through an upper cover, a core rod is fixed on the inner wall of the upper cover and vertically inserted into the lower cavity through the upper cavity, guide vanes which are spirally distributed are arranged on the outer wall of the core rod, the upper ends of the guide vanes are positioned in the upper cavity, the upper water inlet of the guide vanes are opposite to the water inlet, the lower ends of the guide vanes are positioned in the lower cavity, and the water outlets at the lower ends of the guide vanes are opposite to the filter screen cylinder.
2. The vortex self-cleaning filter according to claim 1, wherein the inner wall of the tank body is provided with annular mounting plates distributed along the circumference of the tank body, the annular mounting plates are positioned at the junction of the upper chamber and the lower chamber, and the annular mounting plates are provided with annular fixing plates for pressing the upper end of the filter screen cylinder.
3. A scroll self-cleaning filter as set forth in claim 1, wherein a drain ball valve is mounted on the drain.
4. The vortex self-cleaning filter of claim 1 wherein the side wall of the tank corresponding to the upper chamber is provided with an observation window.
5. The vortex self-cleaning filter of claim 1 wherein the radius of the mandrel comprises one third of the radius of the inner cavity of the upper chamber, the width of the guide vane comprises one third of the radius of the inner cavity of the upper chamber, and the distance between the guide vane and the inner wall of the upper chamber comprises one third of the radius of the inner cavity of the upper chamber.
6. The vortex self-cleaning filter according to claim 1, wherein the water inlet is arranged along the tangential direction of the tank body, and the water outlet at the lower end of the guide vane is arranged along the tangential direction of the filter screen cylinder.
7. The self-cleaning filter of claim 1, wherein a butterfly valve for controlling water output is mounted to the drain port.
8. The vortex self-cleaning filter according to claim 7, wherein the butterfly valve is an electric butterfly valve, a water inlet joint is arranged on the water inlet, a water outlet joint is arranged on the water outlet, the water inlet joint and the water outlet joint are respectively connected with a differential pressure meter through pipelines, the differential pressure meter is in circuit connection with the input end of a controller of the water-fertilizer integrated machine, and the electric butterfly valve is in circuit connection with the output end of the controller.
9. The vortex self-cleaning filter according to claim 1, wherein a water supply joint for supplying water to the fertilizer storage tank is arranged on the water inlet, and a fertilizer supplementing joint connected with the fertilizer injection pump is arranged on the water outlet.
10. A method of filtering using the vortex self-cleaning filter of any one of claims 1-9, comprising the steps of: (1) The water flow enters the tank body along the tangential direction, forms high-speed rotating vortex by virtue of the guide vane, and throws the particles with high density towards the inner wall of the filter screen barrel by virtue of centrifugal force, and the particles with high density sink to a bottom pollution discharge area of the lower chamber along the inner wall; (2) The lighter suspension gathers towards the centre with the vortex, part of the sewage is settled to a bottom sewage disposal area, part of the water flows to the filter screen cylinder; (3) The water flow pre-purified by the rotational flow passes through the filter screen cylinder to intercept micron-sized particles, and the purified water flows out of the outer side of the filter screen cylinder and is converged into the water outlet; (4) When the pressure difference data of the water inlet and the water outlet exceeds a set range, the filter screen cylinder is fed back to be cleaned, the water outlet reduces the water yield, the water yield in the tank body is increased, the impact force of water flow and the high-speed rotating vortex effect of water flow are further enhanced, the filter screen cylinder is flushed and cleaned through the high-speed rotating vortex, and the flushed impurities are settled to a bottom pollution discharge area of the lower cavity; (5) And (3) periodically opening the sewage outlet to discharge sediment in the bottom sewage area.

Description

Vortex self-cleaning filter and filtering method Technical Field The invention relates to the technical field of agricultural irrigation, in particular to a vortex self-cleaning filter and a filtering method. Background The water-fertilizer integrated technology is a key technology for efficient water-saving irrigation and precise fertilization in modern agriculture. In the implementation process of the technology, the irrigation water source (such as river water, well water and the like) usually contains impurities such as sediment, suspended matters and the like. If the impurities directly enter an irrigation system without treatment, key components such as drippers, spray heads, electromagnetic valves and the like are extremely easy to block, so that the irrigation of the system is uneven, the distribution of water and fertilizer is uneven, and even the whole system is paralyzed when serious, thereby affecting the growth of crops and increasing the maintenance cost. Therefore, the effective filtration of the irrigation water source is a primary premise for guaranteeing the stable and long-acting operation of the water-fertilizer integrated system. At present, a multi-stage filtration scheme is commonly adopted in an agricultural water and fertilizer integrated system, wherein the series combination of a centrifugal filter and a net filter is the most common configuration. The water source is firstly subjected to centrifugal filter, large-particle impurities such as sand, silt and the like with larger specific gravity in water are separated and settled by utilizing centrifugal force, and then water flow enters the mesh filter and finer suspended particles are intercepted by the stainless steel filter screen. Although the combination mode can realize better filtering effect, the practical application also exposes the following outstanding disadvantages that firstly, the system structure is loose and the occupied space is large. The centrifugal filter and the net filter are two independent and complete sets of equipment, and the serial installation needs additional pipelines and valves for connection, so that the installation process is complex, the whole occupied area is large, and the arrangement in a pump house or a field head junction with limited space is difficult. Secondly, the equipment purchase and maintenance cost is high, the user needs to purchase two sets of equipment and accessories thereof respectively, and the overall investment cost is high. Therefore, how to design a filtering device with compact structure, high efficiency, energy saving and better cost, so as to solve the problems of large space occupation, high cost and the like of the existing series filtering system, and become a direction of urgent improvement in the field. Disclosure of Invention The invention provides a vortex self-cleaning filter and a filtering method aiming at the defects of the prior art. The invention provides a vortex self-cleaning filter, which comprises a tank body with an opening at the top surface, wherein an upper cavity and a lower cavity which are vertically communicated are arranged in the tank body, a filter screen cylinder is arranged in the lower cavity, a water inlet is arranged on the side wall of the tank body corresponding to the upper cavity, a water outlet is arranged on the side wall of the tank body corresponding to the lower cavity, a sewage outlet is arranged at the bottom of the lower cavity, the opening at the top surface of the tank body is plugged by an upper cover, a core rod is fixed on the inner wall of the upper cover, the core rod is vertically inserted into the lower cavity through the upper cavity, guide vanes which are spirally distributed are arranged on the outer wall of the core rod, the upper ends of the guide vanes are positioned in the upper cavity, the upper water inlet of the guide vanes are opposite to the water inlet, the lower ends of the guide vanes are positioned in the lower cavity, and the lower water outlets of the guide vanes are opposite to the filter screen cylinder. Preferably, an annular mounting plate distributed along the circumference is arranged on the inner wall of the tank body, the annular mounting plate is positioned at the junction of the upper cavity and the lower cavity, and an annular fixing plate for pressing the upper end of the filter screen cylinder is arranged on the annular mounting plate. Further, an upper clamping groove for embedding the upper end of the filter screen cylinder is formed in the annular fixing plate. Further, the annular fixing plate is fixedly connected with the annular mounting plate through bolts, and when the filter screen cylinder needs to be replaced, the filter screen cylinder can be taken out after the annular fixing plate is removed. Preferably, a drain ball valve is arranged on the drain outlet, and the drain ball valve can be opened periodically to discharge sediment settled at the bottom of the lower cavity. P