Gap automatic compensating type underwater rotation servo valve

An underwater rotation and automatic compensation technology, applied in the field of servo valves, can solve problems such as stuck, valve core stuck, poor anti-pollution ability, etc., to achieve automatic compensation, reduce leakage, and reduce leakage

Active Publication Date: 2020-12-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the slide valve is simple, but its anti-pollution ability is poor. When the pollution particles enter the gap of the slide valve, it is very easy to cause the stuck phenomenon of the valve core (20)
The sealing form of the slide valve is a gap fit

Method used

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  • Gap automatic compensating type underwater rotation servo valve
  • Gap automatic compensating type underwater rotation servo valve
  • Gap automatic compensating type underwater rotation servo valve

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0031] Such as figure 1 As shown, the present invention provides an automatic gap compensation type underwater rotary servo valve, which includes a lower end cover 10, a valve core 20, a valve body 30, a thrust ball bearing 40, a gland 50, and an upper end cover 60 , reducer 70, motor 80, motor package shell 90, rotary transformer 100, motor package end cover 110, watertight connector 120 and o...

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Abstract

The invention discloses a gap automatic compensating type underwater rotation servo valve and belongs to the field of servo valves. The servo valve comprises a lower end cover, a valve body, a valve element, a disc spring, a thrust ball bearing, a pressing cover, an upper end cover and a rotary execution mechanism. Four kinds of oil openings are uniformly distributed in the small end of the lowerend cover. The large end is fixedly connected with the bottom end of the valve body. The valve body and the valve element are in clearance fit. The upper end of the valve body is fixedly connected with the upper end cover. Four kinds of oil openings are uniformly distributed in the thick end of the valve element and correspond to the oil openings in the lower end cover. A ring-shaped groove is formed in the thick end of the valve element and used for installing the disc spring. The thin end of the valve element is in clearance fit with an output shaft of a rotary execution mechanism. The thrust ball bearing and the pressing cover are installed between the disc spring and the upper end cover. The pressing cover makes close contact with the thrust ball bearing. The thrust ball bearing makesclose contact with the disc spring. Pre-pressure is formed between the disc spring and the valve element, thus the valve element is closely combined with the small end of the lower end cover, and themutual gap is compensated. Static sealing is formed between the lower end cover and the valve body, between the valve body and the pressing cover and the between the valve body and the upper end cover, and movable sealing is formed between the valve element and the pressing cover.

Description

technical field [0001] The invention belongs to the field of servo valves, and more specifically relates to an underwater rotary servo valve with automatic gap compensation. Background technique [0002] Commonly used servo valves include nozzle baffle type servo valves, jet tube type servo valves, etc. Both the nozzle baffle servo valve and the jet tube servo valve belong to the pilot servo valve, and their power stages are all slide valve structures. The spool valve has a simple structure, but its anti-pollution ability is relatively poor. When pollution particles enter the gap of the spool valve, it is very easy to cause the stuck phenomenon of the spool (20). The sealing form of the slide valve is a gap fit seal, there will be a certain leakage, and it is difficult to achieve a reliable seal. When seawater is used as the working medium, the suspended sand in the water and the low viscosity of the water itself will make the jamming and leakage more serious. obvious. ...

Claims

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Application Information

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IPC IPC(8): F15B13/02F15B20/00
CPCF15B13/02F15B20/005
Inventor 吴德发王希马云祥刘银水王振耀王聚财程谦关子威
Owner HUAZHONG UNIV OF SCI & TECH
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