Micro-adjusting valve

Abstract

The invention relates to a throttle valve and aims to provide a micro-adjusting valve capable of performing micro-adjustment on flow to meet the control requirement. The micro-adjusting valve comprises a valve body, a valve core, a valve cover and an adjusting hand wheel; the valve cover is in threaded connection with the upper part of the valve body; an oil inlet is formed at the bottom of the valve body; an oil outlet is formed in the side part of the valve body; the valve core stretches into the valve body and the bottom of the valve core communicates with the oil inlet; the adjusting handwheel is fixed at the top of the valve core through a screw; and when the adjusting hand wheel is rotated, the adjusting hand wheel drives the valve core to ascend and descend and crack is formed between the valve core and the valve body, so that high-pressure oil flows from the oil inlet to the oil outlet and the flow is adjusted by rotating the number of turns of the adjusting hand wheel. When the adjusting hand wheel is rotated anticlockwise, the valve core ascends and crack is formed between the valve core and the valve body, so that the high-pressure oil flows from the oil inlet to the oil outlet; and the size of flow is determined by the number of turns of the adjusting hand wheel and the matched length of the valve core and the valve body is long, so micro-adjustment on flow can beconducted.

Description

technical field [0001] The invention relates to a throttling valve, in particular to a fine-tuning valve. Background technique [0002] The domestic lime rotary kiln adopts a hydraulically driven retaining wheel device to bear the sliding force of the whole kiln. The diameter of the kiln body is 4m, the length is 60m, and the internal material is placed. Because the kiln body is placed obliquely, it has a tendency to slide under the action of its own weight. The hydraulic thrust gear is used to force the kiln body to move up and down in a controlled manner according to the expected speed (generally 2~3mm / h), so as to effectively ensure the uniform contact and wear between the belt and the supporting roller, and greatly save the supporting roller Adjusted workload. When the rotary kiln rises to a certain position, the pump stops supplying oil, the electromagnetic ball valve is energized, and the original pressure oil in the oil cylinder is discharged back to the oil tank thr...

AI Technical Summary

Problems solved by technology

When the rotary kiln rises to a certain position, the pump stops supplying oil, the electromagnetic ball valve is energized, and the original pressure oil in the oil cylinder is discharged back to the oil tank through the flow regulating valve by the kiln body's own weight. The speed of the kiln body sliding is mainly determined by the flow regulating valve. Control, because the kiln body is required to slide at an extremely slow speed of about 2-3mm / h, the existing ordinary throttle valve is difficult to meet the control requirements

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