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CN-121974439-A - Double-water-type filtering pure water backwashing water purifier with compressed air

CN121974439ACN 121974439 ACN121974439 ACN 121974439ACN-121974439-A

Abstract

The invention discloses a double-water-type filtering pure water backwashing water purifier with compressed air, which relates to the technical field of water treatment equipment, and comprises a cylinder body, a water tank and a water tank, wherein the cylinder body forms a closed pressure container; the inner pressure type ultrafiltration membrane component is arranged in an independent membrane shell, a shell membrane is longitudinally arranged at the upper part of the inside of the cylinder, the end part of the shell membrane is connected with a raw water inlet pipeline through an interface with a filter, the reverse osmosis membrane component is arranged at the lower part of the inside of the cylinder and is used for secondarily purifying purified water stored in the cylinder after being filtered by the ultrafiltration membrane component, a compressed gas cavity is formed in a top space above the liquid level in the cylinder, and the cleaning control system is used for executing a first cleaning mode and a second cleaning mode. The device has the advantages of high-efficiency self-cleaning capability, convenience in maintenance and stability in water supply.

Inventors

  • CHEN JIANPENG

Assignees

  • 惠州市鸿怡鑫五金制品有限公司

Dates

Publication Date
20260505
Application Date
20260119

Claims (10)

  1. 1. The utility model provides a take two water types of filtration pure water backwash purifier of compressed air which characterized in that includes: A cylinder (1), wherein the cylinder (1) forms a closed pressure vessel; The internal pressure type ultrafiltration membrane component is arranged in an independent membrane shell (3), a shell membrane is arranged at the upper part of the inside of the cylinder body (1), and one end of the shell membrane is connected with a raw water inlet pipe (2) through an interface with a filter; the reverse osmosis membrane component (5) is arranged at the lower part of the inside of the cylinder (1) and is used for secondarily purifying the purified water stored in the cylinder (1) after being filtered by the ultrafiltration membrane component; A compressed gas chamber (6) formed in the cylinder (1) in a headspace above the liquid level; A cleaning control system for executing a first cleaning mode and a second cleaning mode; The first cleaning mode is forward cleaning, namely raw water enters the ultrafiltration membrane component from a raw water inlet pipe (2) and is discharged by the forward cleaning blow-down valve (4) after the inner wall of the ultrafiltration membrane component is washed; the second cleaning mode is reverse cleaning, namely, pure water stored in the cylinder (1) is driven to be reversely flushed from the outer wall of the membrane wire to the inner wall of the membrane wire hole by utilizing the air pressure in the compressed air cavity (6), and flushing wastewater is discharged through a backwashing sewage discharge valve (201).
  2. 2. The water purifier with compressed air double-water filtering and pure water backwashing according to claim 1, wherein a horn mouth (8) is arranged at the top of the cylinder (1), the outer diameter of a membrane shell (3) of the internal pressure type ultrafiltration membrane component is matched with the inner diameter of the horn mouth (8), so that the membrane shell (3) can be integrally inserted into the cylinder (1) or extracted from the horn mouth (8), and the joint of the membrane shell (3) and the horn mouth (8) is fixed through a clamp (801).
  3. 3. The backwash water purifier with compressed air double-water filtration pure water according to claim 1, wherein the pure water outlet (9) of the membrane shell (3) is positioned at the bottom of the membrane shell, and the normal working liquid level in the cylinder (1) is always higher than the highest point of the pure water outlet (9).
  4. 4. The backwash water purifier with compressed air double-water filtration pure water according to claim 1, wherein a liquid level or pressure detection device is arranged on the cylinder (1), the cleaning control system is in communication connection with the liquid level or pressure detection device, and parameters of the second cleaning mode are adjusted according to detected pressure or liquid level information.
  5. 5. The backwash water purifier with compressed air double-water filtration pure water as defined in claim 1 further comprising an ultrasonic auxiliary cleaning system (7), wherein the ultrasonic auxiliary cleaning system (7) comprises: An ultrasonic generator; An ultrasonic transducer (701) driven by the ultrasonic generator; And the waveguide structure is used for transmitting vibration energy generated by the ultrasonic transducer (701) to the vicinity of the internal pressure type ultrafiltration membrane component.
  6. 6. The backwash water purifier with compressed air double-water filtration pure water as claimed in claim 5 wherein said waveguide structure is a longitudinally arranged waveguide rod (702) having one end connected to said ultrasonic transducer (701) located outside said cylinder (1) and the other end penetrating sealingly inside said cylinder (1) and extending to a region adjacent to said inner pressure type ultrafiltration membrane assembly.
  7. 7. The backwash water purifier with compressed air double-water filtration pure water as claimed in claim 6, wherein the waveguide rod (702) is hermetically arranged on the bottom or the lower side wall of the cylinder (1) in a penetrating way, and a high-frequency dynamic sealing mechanism is arranged on the penetrating part of the waveguide rod.
  8. 8. The backwash water purifier with compressed air double-water filtering pure water according to claim 7, wherein the high-frequency dynamic sealing mechanism is a metal corrugated pipe (13) sealing piece, and two ends of the metal corrugated pipe (13) are respectively connected with the waveguide rod (702) and the cylinder body (1) in a sealing way.
  9. 9. The backwash water purifier with compressed air double-water filtration pure water as recited in claim 8 wherein said waveguide rod (702) extends into the interior of the membrane housing (3) of said internal pressure ultrafiltration membrane assembly and has a distal end thereof non-rigidly connected to said membrane assembly for radiating ultrasonic energy into the body of water within the membrane housing (3).
  10. 10. The backwash water purifier with compressed air double water filtration pure water as recited in claim 9 wherein a plurality of lateral structures (14) for enhancing radial radiation of ultrasonic waves are provided on a pole segment of said waveguide pole (702) corresponding to the length of said internal pressure type ultrafiltration membrane assembly.

Description

Double-water-type filtering pure water backwashing water purifier with compressed air Technical Field The invention belongs to the technical field of water treatment equipment, and particularly relates to a pure water backwashing water purifier with compressed air double-water filtering. Background The water purifier is used as common water purifying equipment, and a core filter element, such as a hollow fiber ultrafiltration membrane, can adhere to the outer surface of a filter element membrane wire after long-term use, so that the water yield is reduced and the water flux is attenuated. To restore the performance of the filter cartridge, regular back flushing of the filter cartridge is a critical maintenance step. At present, the main backwash technology in the market mainly has the following two schemes, but has obvious defects, wherein the scheme comprises a raw water back flushing scheme, and the scheme is used for flushing the filter element by reversely flowing untreated raw tap water from the water producing end of the filter element. The method has the defect that raw water containing pollutants such as residual chlorine, bacteria, impurities and the like can directly contact and flow through the water producing side of the filter element, namely a pure water channel in the back flushing process. The filter element cannot be thoroughly cleaned, but the pure water outlet and the inner channel of the filter element are subjected to secondary pollution, the service life of the filter element is prolonged, and the safety risk of drinking water is brought. In addition, the double-machine mutual-washing pure water flushing scheme is also included, and an improvement scheme is provided for solving the pollution problem of raw water backwashing, namely, two ultrafilters are arranged. When back flushing is needed, pure water produced by one of the two tanks is used for flushing the other tank, and the method avoids raw water pollution, but has the defects of high cost, complex system, large occupied space and the like. Therefore, a water purifier with compressed air and double water types for filtering and pure water back flushing is needed. Disclosure of Invention The invention aims to provide a double-water-type filtering pure water backwashing water purifier with compressed air, which has the advantages of high-efficiency self-cleaning capability, convenience in maintenance and stable water supply. The specific technical scheme is as follows: The water purifier comprises a cylinder body, an internal pressure ultrafiltration membrane component, a reverse osmosis membrane component, a compressed gas cavity and a cleaning control system, wherein the cylinder body forms a closed pressure container, the internal pressure ultrafiltration membrane component is arranged in an independent membrane shell, a shell membrane is longitudinally arranged at the upper part of the inside of the cylinder body, one end of the internal pressure ultrafiltration membrane component is connected with a raw water inlet pipeline through an interface with a filter, the reverse osmosis membrane component is arranged at the lower part of the inside of the cylinder body and is used for secondarily purifying purified water stored in the cylinder body after being filtered by the ultrafiltration membrane component, the compressed gas cavity is formed in a top space above the liquid level in the cylinder body, the cleaning control system is used for executing a first cleaning mode and a second cleaning mode, the first cleaning mode is forward cleaning, raw water enters the inside of the ultrafiltration membrane component from a raw water inlet pipeline and is discharged by a forward cleaning blowoff valve after being washed, and the second cleaning mode is backward cleaning, the stored pure water in the cylinder body is driven to flow into the inside of the membrane component in a backward direction by utilizing the air pressure in the compressed gas cavity to be flushed by the blowoff valve. Preferably, the ultrasonic auxiliary cleaning system further comprises an ultrasonic generator, an ultrasonic transducer driven by the ultrasonic generator and a waveguide structure for transmitting vibration energy generated by the ultrasonic transducer to the vicinity of the internal pressure type ultrafiltration membrane component. By introducing ultrasonic waves, micro-jet and shock waves generated by cavitation effect are utilized to deeply strip intractable pollutants attached to the inner wall of the membrane, and the intractable pollutants are cooperated with hydraulic cleaning to improve cleaning efficiency. Preferably, the waveguide structure is a longitudinally arranged waveguide rod, one end of the waveguide rod is connected with the ultrasonic transducer positioned outside the cylinder body, and the other end of the waveguide rod penetrates into the cylinder body in a sealing manner and extends to a region adjacent to the internal pressu