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Throttle valve with built-in pressure reducing drainage device

A technology of decompression drainage and throttling valve, which is applied in the field of water hydraulics, can solve the problems of pressure shock and inability to suppress cavitation, and achieve the effects of improving the pressure distribution of the valve port, compact structure, and suppressing cavitation

Pending Publication Date: 2019-08-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the load increases, the high pressure is induced to the throttle valve port, causing a large pressure shock and even unable to suppress the cavitation phenomenon

Method used

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  • Throttle valve with built-in pressure reducing drainage device
  • Throttle valve with built-in pressure reducing drainage device
  • Throttle valve with built-in pressure reducing drainage device

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Embodiment Construction

[0020] 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.

[0021] figure 1 It is an embodiment of the present invention, including lock nut 1, hexagon socket head cap screw 2, spring washer 3, left end cover 4, shaft circlip 5, O-ring 6, guide sleeve 7, throttle valve core 8, Valve body 9, pressure reducing valve sleeve 10, drainage device 11, pressure reducing spring 12 and right end cover 13. Built-in decompression and drainage device The throttle valve is divided into left and right sections, the left side of the throttle valve port 15 plays the role of throttling and speed regulation, which is called the throttle valve section, and the right side of the throttle valve port 15 plays the role of pressure reduction and drainage , called the drainage segment. In the throttle valve section, the left end c...

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Abstract

The invention discloses a throttle valve with a built-in pressure reducing drainage device. The throttle valve is characterized in that the throttle valve comprises a left end cover, a guide sleeve, athrottle valve core, a valve body, a pressure reducing valve sleeve, a drainage device, a pressure reducing spring, a right end cover and the like; a water inlet and a water outlet are respectively arranged on the valve body and the right end cover; the guide sleeve is arranged between the throttle valve core and the valve body; the pressure reducing valve sleeve is arranged in a valve body hole;the drainage device is arranged in an inner hole of the pressure reducing valve sleeve and is capable of sliding left and right; the pressure reducing spring is arranged between the drainage deviceand the right end cover and is used for adjusting the displacement of the drainage device; two groups of kidney-shaped holes with different diameters are formed in the left side of the pressure reducing valve sleeve; steps are arranged inside the drainage device; ladders are arranged at the end part of the pressure reducing valve sleeve; and a pressure reducing valve port is formed by the steps and the ladders. According to the throttling valve, water at the outlet can be led to a throttling valve port, and the pressure at the throttling valve port is basically constant no matter how high thepressure of the water outlet is, so that the cavitation inhibition effect is basically the same under different working condition pressures, and the throttling valve is applicable to various pressureapplication occasions.

Description

technical field [0001] The invention belongs to the field of hydraulic pressure, and in particular relates to a throttle valve with a built-in decompression and drainage device. Background technique [0002] Water hydraulic technology is a hydraulic transmission technology that uses seawater or fresh water as the working medium for energy transmission and control. It has the advantages of no pollution, environmental friendliness, safety and energy saving, and is a typical "green production technology". Water pressure throttle valve is a flow control valve commonly used in water hydraulic system, which is used for loading and throttling speed regulation. However, since the saturated vapor pressure of water is much higher than that of oil, the hydraulic throttle valve is prone to cavitation in the high-speed flow area such as the valve port, generating a large number of air bubbles, destroying the continuity of water flow, and causing flow loss. And pressure pulsation, and wh...

Claims

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Application Information

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IPC IPC(8): F15B13/02
CPCF15B13/021F15B13/025
Inventor 史伟杰赵海霞王晓原张永涛王帅
Owner QINGDAO UNIV OF SCI & TECH
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