Error correction control system for sludge plunger pump and working method

Abstract

The invention provides an error correction control system for a sludge plunger pump and a working method thereof. The system comprises a first oil cylinder, a second oil cylinder, a third oil cylinderand a main sludge discharge port, each oil cylinder is provided with a ceramic plunger pump, each oil cylinder is provided with a power source by a hydraulic system, and the control system comprisesthe hydraulic system, a PLC, a man-machine interaction interface, a plurality of displacement sensors and a plurality of pressure transmitters, wherein the man-machine interaction interface, the displacement sensors and the pressure transmitters are in communication connection with the PLC. The error correction control system is obtained by overcoming the defects of similar sludge treatment systems such as an existing urban sludge treatment system, by additionally arranging the hydraulic control system on the basis of an existing mechanical sludge plunger pump, equipment repair and maintenanceare quite convenient, and a whole machine has excellent working performance and a long service life and can stably work for a long time in the environment where sludge is used as a working medium.

Description

technical field [0001] The invention belongs to the technical field of hydraulic system control, and in particular relates to an error correction control system and working method for a sludge plunger pump. Background technique [0002] In the field of sludge low-temperature carbonization treatment, the currently used sludge plunger pump adopts the method of frequency converter and cam to drive the plunger pump; when the system is started, it needs to be started at zero pressure, and the motor will gradually increase the pressure after the start-up, resulting in a long start-up time. It is very long; the opening and closing of the feed port of the plunger pump is forced to open and close by the matching relationship between the cams. Since the transmission medium is sludge, the system often wears out, the valve is stuck, the cam or the valve core is worn, and often As a result, the feed inlet cannot be completely closed or opened, causing the system pressure to be unstable o...

AI Technical Summary

Problems solved by technology

[0002] In the field of sludge low-temperature carbonization treatment, the currently used sludge plunger pump adopts the method of frequency converter and cam to drive the plunger pump; when the system is started, it needs to be started at zero pressure, and the motor will gradually increase the pressure after the start-up, resulting in a long start-up time. It is very long; the opening and closing of the feed port of the plunger pump is forced to open and close by the matching relationship between the cams. Since the transmission medium is sludge, the system often wears out, the valve is stuck, the cam or the valve core is worn, and often As a result, the feed inlet cannot be completely closed or opened, causing the system pressure to be unstable or depressurized, or the volume rate of the plunger pump is not high, and the production efficiency is low; repair and maintenance are very inconvenient. If the cam is worn and cannot be repaired at all, the plunger pump When the material is sucked, the outlet valve is stuck, which will cause the sludge to flow back and cause the system to lose pressure. The mechanical plunger pump uses a cam to match the movement of the three-pillar plug. In a system with a large flow rate, the cam will do very well. Large, to meet the requirements, due to cam wear, difficult to repair, high flow system is very expensive, and the service life is not long, repair and maintenance costs are very high