Constant rotating speed automatic control valve assembly of hydraulic motor

Abstract

The invention discloses a constant rotating speed automatic control valve assembly of a hydraulic motor. The constant rotating speed automatic control valve assembly comprises a constant valve block, a constant piston, a constant oil outlet, a constant spring, a constant lock nut, a setting lock nut, a setting adjustment device, a feedback oil opening, a setting oil opening, an adjustment throttling device, an oil inlet, a buffer cavity and other components. After emulsified liquid passes through the oil inlet to enter the buffer cavity to be buffered, the emulsified liquid passes through the setting adjustment device to enter the setting oil opening. The emulsified liquid enters the adjustment throttling device after being set to achieve needed flow. The emulsified liquid passes through the constant piston through the oil inlet. After the flow of the emulsified liquid is constant through the constant piston, the emulsified liquid is supplied to the emulsified liquid motor through the constant outlet. The emulsified liquid motor runs at constant speed after obtaining the emulsified liquid of the constant flow. The constant rotating speed automatic control valve assembly is not influenced by fluid supply flow or pressure; the flow is kept constant automatically; the emulsified liquid motor can obtain constant pressure and flow; and the function that the assembly runs at constant speed and constant torque and runs precisely and stably is achieved.

Description

technical field [0001] The invention relates to an automatic control valve assembly with constant rotational speed of a hydraulic motor, specifically a constant flow rate is always supplied when pumping emulsion to an emulsion motor whose torque is constantly changing, so as to keep the emulsion motor at a constant speed. , Constant torque operation, precise and smooth operation as a device. Background technique [0002] At present, when the emulsion motor is driven by the pumped emulsion, its operating speed and torque are controlled by the flow valve and the relief valve; when the torque of the motor increases and the pressure of the pipeline increases, the relief valve Start to overflow, reduce the flow supplied to the emulsion motor, and the rotation speed of the emulsion motor decreases; when the torque of the emulsion motor decreases, the pipeline pressure decreases, the overflow port of the overflow valve is closed, the flow supplied to the emulsion motor increases, a...

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Problems solved by technology

[0003] The present invention solves the problem of "when the emulsion motor is working under the drive of pumping emulsion, when the torque of the motor increases and the pressure of the pipeline increases, the overflow valve begins to overflow, reducing the flow supplied to the emulsion motor, and the emulsion The speed of the motor decreases; when the torque of the emulsion motor decreases, the pressure of the pipeline decreases, the overflow port of the overflow valve is closed, the flow supplied to the emulsion motor increases, and the speed of the motor increases; the difficulty that the emulsion motor cannot run constantly” , a hydraulic motor speed constant automatic control valve assembly is proposed. This system is installed between the pump and the emulsion motor. The pump always supplies a constant flow, which can make the emulsion motor run at a constant speed and constant torque, accurately and smoothly Function

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