Program-controlled variable flow generator with pulley block increment

Abstract

The invention provides an amplification program-control variable-flow generator with pulley blocks, and belongs to the technical field of water treatment. The generator comprises a constant-level water supply system, a water outlet system with variable difference in water level and a flow rate curve program self-control system, wherein the lower part of a constant-level water supply tank is connected with three water outlet hoses; due to the combined effect of different opening-closing combinations of solenoid valves on the water outlet hoses, opening degree of a regulating valve and a height regulator, the datum flow rate size and the flow amplification are changed; acceleration and reduction traction electric-hydraulic push rods in the water outlet system with variable difference in water level are connected to traction wheels through acceleration and reduction movable pulley blocks respectively, so that the quick switching of the acceleration and reduction traction electric-hydraulic push rods is realized. An industrial controller is connected with a converter, a frequency converter and a motor, so that water outlet flow rate is changed in any required waveforms according to the provided water flow change curve. The amplification program-control variable-flow generator can be used for simulating various raindrop types and flow rate changes of industrial sewage and realizing quantitative evaluation and structure optimization on regulating effects of various regulating tanks and rainwater regulating and storing tanks.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of water treatment, and in particular relates to a pulley block increasing-amplitude program-controlled variable flow generator capable of producing water flow in an arbitrary given waveform. [0003] Background technique: [0004] The fluctuation of influent water quantity and water quality in the sewage treatment plant has great harm to the subsequent water treatment. For example, in 2004, the biochemical system of the first phase of Shaoxing sewage treatment plant was impacted by water quality and quantity 7 times, which caused the water quality fluctuation of the secondary sedimentation tank. For 58 days, the control of physical and chemical dosing operations was relatively difficult. Setting the regulating pool as a structure to regulate the water quantity and quality can reduce the harm to the subsequent water treatment. [0005] The US Environmental Protection Agency (EPA) water pollution surv...

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Problems solved by technology

[0007] There are few studies on existing water flow fluctuation generators. Y.L. Zhang uses a cam with uneven density to squeeze the pipe to achieve flow fluctuations, but the recovery ability of the pipe after elastic deformation must be considered; K.C. Leong uses The disc rotates the crankshaft to drive the piston to suck and change the flow rate; Yu Jiuyang uses a cam-link mechanism to drive the gate valve to realize the flow change, but according to the flow characteristic curve of the valve, it is found that the opening of the gate valve is not in a linear relationship with the flow rate; Pu Jianing designed a It is not a disc cam mechanism, but every time the fluctuation amplitude is changed, a new cam mechanism needs to be produced; Zhang Xinxi uses a motor to drive a porous disc to rotate, and uses the principle of short tube flow to make the water flow change in a rectangular wave or sine wave

None of the above-mentioned water flow fluctuation generators can realize the change curve of the outlet water flow in any given waveform, and the single use of electro-hydraulic push rod, direct motor connection, belt drive, frequency conversion speed regulation, stepping motor drive, etc. cannot be used in the same machine. Fast and slow changes in water flow on the generator

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