High-efficiency backwashing multi-layer laminated pre-filter

• Main Author: LI ZHIGUANG
• Format: Patent
• Language: Chinese; English
• Published: 16.12.2022
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a high-efficiency backwashing multi-layer laminated pre-filter, which comprises a valve body, a main valve core, a filter assembly and a valve rod, a valve core seat is arranged in the valve body, an upper cavity and a lower cavity are arranged in the valve body, and a one-way valve which unidirectionally circulates towards the lower cavity is assembled between the upper cavity and the lower cavity; three flow channels including a water inlet flow channel, a filter element inner cavity flow channel and a water outlet flow channel are arranged in the valve element seat, upper end openings of the water inlet flow channel, the water outlet flow channel and the filter element inner cavity flow channel are all formed in the top of the valve element seat, the other end of the water inlet flow channel is connected with a water inlet pipe, and the other end of the water outlet flow channel is connected with a water outlet pipe; according to the invention, the two pairs of valve cores with seal