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Linked regulatable load reducing valve

An adjustable valve stem technology, applied in the direction of liquid displacement machinery, pump control, machine/engine, etc., can solve the problems of difficult adjustment of suction vacuum degree, poor performance stability, complex system, etc., and achieve simple structure and high efficiency. Effect of low efficiency and exhaust temperature

Inactive Publication Date: 2008-11-12
WUXI COMPRESSOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This butterfly valve structure requires an additional venting device, so the system is complicated and the reliability is poor; the suction vacuum (load reduction) is not easy to adjust, and the performance stability is poor

Method used

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  • Linked regulatable load reducing valve
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  • Linked regulatable load reducing valve

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Effect test

Embodiment Construction

[0013] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0014] The present invention mainly consists of housing 1, intake valve plate 2, oil piston 3, rack rod 4, bushing 5, vent valve body 6, bushing 7, valve stem 8, gear 9, nut 10 close to the housing side , the adjusting bolt 11, the nut 12 away from the shell side and so on.

[0015] In the unloading valve of the present invention, the oil piston 3 is installed in the oil cylinder of the housing 1 , one end of the rack rod 4 is connected with the oil piston 3 , and the other end is connected with the vent valve 6 . The gear 9 is installed on the valve stem 8, and the rack rod 4 can drive the gear 9 and the valve stem 8 to rotate. The two ends of the valve stem 8 are provided with bushings 7, which are installed on the air inlet of the unloading valve housing 1. The valve stem 8 and the intake valve plate 2 are connected by bolts to form a moving whole....

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PUM

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Abstract

The invention relates to a linkage adjustable load reducing valve, concretely for regulating the load of a screw rod compressor, mainly adopting rack lever and gear transmission to realize the linkage of air inlet valve plate and exhaust emptying valve so as to realize load adjustment. One end of a gear lever is connected with an oil piston and the other end is connected with the emptying valve; it makes pressure oil move right and left to open or close the emptying valve, and simultaneously, it uses the rack lever to drive the gear to rotate, and the gear, valve rod and air inlet valve plate are connected into an organic body. It realizes accurate and reliable linkage of opening / closing the air inlet valve and closing / opening the emptying valve, and it simplifies system pipeline and the system has good reliability. It can adjust the air intake (intake vacuum) as unloading through adjusting bolt to make machine set working at the optimum point as unloading-low power consumption and proper air exhaust, and can improve compressor efficiency and automatic control reliability.

Description

technical field [0001] The invention relates to an adjustable unloading valve, which is used in the air intake adjustment of an air compressor, and belongs to the technical field of automatic control and adjustment devices. Background technique [0002] The unloading valve is the main device for air volume adjustment in the compressor. The quality of the unloading valve structure directly affects the power consumption of the compressor when it is unloaded and the discharge temperature of the compressor. A well-structured unloading valve can improve compressor efficiency and improve the reliability of automatic control. Before the present invention was made, in the prior art, the following two types of control valves (unloading valves) for air volume adjustment in compressors were mainly used: one control valve (unloading valve) was a diaphragm reciprocating linkage structure. For the control valve (unloading valve) of this structure, the flow loss of gas in the unloading v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C28/00F04B49/02
Inventor 吴惠贤朱为宇吴霞俊
Owner WUXI COMPRESSOR CO LTD