High-efficiency control system of disc filter and control method

Abstract

The invention relates to a high-efficiency control system of a disc water filter and a control method. A water inlet end of the disc filter is connected with a three-way valve; an outlet end of the disc filter is connected with a pneumatic cutoff valve; an electromagnetic valve I and an electromagnetic valve II are arranged on the three-way valve and the pneumatic cutoff valve respectively and connected to a PLC (programmable logic controller); the disc filter and the three-way valve are connected with a forward filtration pipeline and a reverse cleaning pipeline; the PLC circularly controls opening and closing of the electromagnetic valves to further switch opening and closing of the three-way valve and the pneumatic cutoff valve for forward water filtration and reverse disc filter cleaning; the defect of power pipeline blocking caused by dirt in water is overcome; a control mode is simplified; backwash water pressure is increased; the backwash time is adjusted flexibly; a fault rateis decreased; the maintenance time is shortened; a running rate of equipment is increased; and normal production is ensured.

Description

technical field [0001] The invention relates to a control system and a control method, in particular to a high-efficiency control system and control method of a disc filter, belonging to the field of control systems. Background technique [0002] Disc filters used in industrial circulating water purification treatment to filter water pollutants online. The disc filter control system generally adopts a special controller, and the special controller uses a motor-driven cam mechanism to make the multi-way control valve change on and off to send out a certain logic signal, and the circulating water pressure is used as the power to drive different backwash three-way valves. To switch between working and backwashing states. [0003] Disc filter 25 consists of multiple units, figure 2 It is a diagram of the existing filter control system, and it is a system diagram of one of the units. In the filtration system, a dedicated controller 20 is provided, and the dedicated controller 2...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that dirt in the power system of the existing control system is easy to block the power pipeline and cannot start backwashing, the structure of the motor-driven cam mechanism is complex and cumbersome, the accuracy of the action time is low, the failure rate of the multi-way switching valve is high, and the disc filter is online. The backwash water pressure is low during the flushing process. The present invention provides a high-efficiency control system and control method for a disc filter. Its purpose is to overcome the defect that the power pipeline is blocked by dirt in the water, simplify the control method, and increase the backwash water pressure. , flexibly adjust the recoil time, reduce the failure rate, reduce the maintenance time, improve the operation rate of the equipment, and ensure the normal production

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