Nov 26, 2014 - ... laminate also has the advantages of small loss of a water head, large excess flow, high filtration efficiency and convenience in backwashing.
(19) State Intellectual Property Office of the P.R. China
(12) UTILITY MODEL PATENTS (10) Publication Number : CN 203954803 U (45) Publication Date:
Nov 26, 2014
(21) Application number:
201420281702.7
(22) Filing date:
May 29, 2014
(73) Applicant:
Xinjiang Water Resources Research Institute, 830049
Address:
No. 73, Hongyanchi North Road, Urumqi, Xinjiang, China
(72) Inventors:
Shalamu Abudu, Cui Rui, Cui Chunliang, Chen Zhiqing, Shen Xiaoming, Lei Jianhua, Wu Wentao, Abulitifu Maimaiti
(74) Patent Agency: Agent:
Urumqi Xinkelian Intellectual Property Agency Ltd. 65107 Bai Zhibin
(51) International Classification: B01D 29/46 (2006.01)
(54) UTILITY MODEL NAME: A Special Filter Disc Element with Multistage Screen Type (57) ABSTRACT: The utility model relates to an agricultural water-saving irrigation device, belongs to an improvement of a laminate structure of a laminated filter and particularly relates to a special laminate for a multi-stage reticular flow passage filter. Annular flow passages which are mutually symmetrical and downwards concave are respectively arranged on the front disc surface and back disc surface of an annular disc, the front surface and back surface of the annular disc are respectively divided into inner discs and outer discs by the annular flow passages, and radial rays are respectively uniformly distributed on the front disc surface and back disc surface of the annular disc, wherein cylindrical inner bulges are uniformly distributed on the rays on the disc surfaces of the inner discs, cylindrical outer bulges are uniformly distributed on the rays on the disc surfaces of the outer discs, and the height of each of the cylindrical inner bulges and the cylindrical outer bulges is 0.4-0.6mm. The special laminate provided by the utility model has a reasonable structure, a water flow has small flow resistance in the laminate and is not blocked by sediment particles, and the special laminate also has the advantages of small loss of a water head, large excess flow, high filtration efficiency and convenience in backwashing.
