CONVEYING PRESSURE CONTROLLER

• Main Author: ARAKAWA TAKUYA
• Format: Patent
• Language: English
• Published: 29.10.1985
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

PURPOSE:To make a variation in conveying pressure restrainable to the irreducible minimum, by performing the revolving speed ontrol of a conveying pump started anew by means of pump number control in a way of adjusting the opening of a discharge valve for a period of time till the pump discharge valve becomes full open. CONSTITUTION:Each detectin output out of a level detector 21, a conveying flow detector 23 and a conveying pressure detector 24 is inputted into an input unit 31, then further taken into an operational controller 32, and a command out of this operational controller 32 is transmitted to a conveying pump operation number controller 34 and a variable speed pump revolving speed controller 35 through an output unit 33, therefore both these controllers 34 and 35, as a controlled system, gives an operating signal to each of pumps 11a-11c, thus control takes palce. As for a variable speed pump given additional operation by this operating signal, a revolving speed of the variable speed pump to be given the additional operation is controlled in accordance with the said valve opening. Accordingly, even in the case where these conveying pumps 11a-11c are added, these conveying pumps 11a, 11b and 11c are controlled whereby conveying pressure is thus controllable in a proper manner.