High-pressure energy-storage backwashing filtering equipment

High-pressure energy-storage backwashing filtering equipment

  • CN 105,621,534 B
  • Filed: 11/06/2014
  • Issued: 06/05/2020
  • Est. Priority Date: 11/06/2014
  • Status: Active Grant
First Claim
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1. A high-pressure energy-storage backwashing filter device comprises a membrane filter element, wherein the membrane filter element is provided with a water inlet, a water outlet and a sewage discharge port, and is characterized by further comprising an energy storage tank capable of storing high-pressure water and a waterway control module for changing the flow direction of a waterway, wherein the waterway control module comprises a water inlet end, a water outlet end and a sewage discharge end, and the water outlet end and the water inlet end are communicated or the water outlet end and the sewage discharge end are switched by the waterway control module, wherein the sewage discharge port is communicated with the energy storage tank, the water inlet is communicated with the water outlet end, and the water inlet end is connected with a water source;

  • the water inlet and the drain outlet are both communicated with the raw water cavity of the membrane filter element, the water inlet is arranged at the upper end of the membrane filter element, and the drain outlet is arranged at the lower end of the membrane filter element;

    a plurality of stages of preposed filter elements are also arranged between the water inlet end of the waterway control module and a water source, each preposed filter element comprises a PP cotton filter element and an activated carbon filter element, the PP cotton filter element is arranged close to the water source, and the activated carbon filter element is arranged close to the water inlet end of the waterway control module;

    the energy storage tank comprises a tank body and a compressible air bag arranged in the tank body, wherein gas is filled in the air bag, and a cavity between the outer surface of the air bag and the inner wall of the tank body is used for storing water;

    the energy storage tank is internally provided with a movable clapboard which is used for preventing water from being melted into gas, and the clapboard is arranged at the gas and water positions in the energy storage tank;

    when water needs to be filtered, the water outlet end is controlled to be communicated with the water inlet end through switching of the waterway control module, at the moment, pressurized raw water sequentially enters the raw water cavity of the membrane filter element through the plurality of stages of preposed filter elements, the water inlet end, the water outlet end and the water inlet, one part of the pressurized raw water entering the membrane filter element is filtered to form purified water and is sent out from the water outlet, the other part of the pressurized raw water is sent into the energy storage tank through the sewage discharge port, the air bag in the energy storage tank is compressed under the action of water pressure until the pressure inside and outside the air bag is balanced, or the water bag in the energy storage tank expands under the action of water pressure until the pressure inside and outside the;

    when the membrane filter needs to be flushed and discharged, the water outlet end is controlled to be communicated with the sewage discharge end through switching of the water path control module, the membrane filter element is disconnected with a water source, water in the energy storage tank flows back to the raw water cavity of the membrane filter element under the action of the air bag or air outside the water bag, the membrane filter element is flushed back, and flushed sewage is discharged through the water inlet and the sewage discharge end in sequence.

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