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Service valve

A technology for repairing valves and valve bodies, which is applied in the directions of fluid pressure actuation devices, fluid pressure actuation system safety, and mechanical equipment. Reduce, reduce maintenance workload, good sealing performance

Active Publication Date: 2012-05-23
广州白云液压机械厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A kind of hydraulic equipment often needs to design four oil circuits from the oil tank to the actuator, that is, one pressure oil circuit, one return oil circuit and two oil circuits connected to the actuator. In order to meet the maintenance requirements, it is necessary to Install a cut-off device such as a one-way valve or a cut-off valve, so that multiple pipes and multiple valve elements take up a lot of space, there are many interfaces, there are many possible points of oil leakage, and frequent maintenance is required, and maintenance is limited by space very difficult
When hydraulic equipment uses multiple actuators, it is often difficult to arrange piping and valve components due to space problems
Moreover, in most cases, multiple valves share the same pressure oil pipe P and the same oil return pipe T, and the A port and B port connected to the actuator are often not isolated. It is often necessary to stop the entire hydraulic system to replace the damaged one. Directional valves affect work efficiency, especially in some 24-hour uninterrupted assembly line-like workplaces, if the entire hydraulic system is stopped, it will cause great economic losses

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 6 , a service valve, consisting of a valve body 1 and a cover plate 2, the cover plate 2 is located at both ends of the valve body 1. On the valve body 1, four oil passages are formed by drilling or casting: oil passage P3, oil passage A4, oil passage B5 and oil passage T6. There is a cut-off device 7 on the oil passage P3, and a cut-off device 7 on the oil passage A4. The cut-off device 8 is provided with a cut-off device 9 on the oil passage B5, and a one-way cut-off device 10 is provided on the oil passage T6. The cut-off device 7, the cut-off device 8, and the cut-off device 9 have the same structure, as Figure 5 As shown, it is made up of a handle 11, a spheroid 12, a sealing bowl 13, a stop pad 14, a rotating shaft 15 and a positioning pin 16. A hole is drilled in the ce...

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PUM

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Abstract

The invention discloses a service valve, which consists of a valve body and a cover plate positioned at the two ends of the valve body. The valve body is provided with an oil circuit P, an oil circuit A, an oil circuit B and an oil circuit T; and the oil circuit P, the oil circuit A and the oil circuit B are respectively provided with a stopper; and the oil circuit T is provided with a one-way stopper. The service valve has the characteristics of space saving, convenient maintenance and the like, and can be widely applied to various hydraulic devices.

Description

technical field [0001] The invention relates to a maintenance valve for hydraulic equipment, in particular to a valve element composed of a plurality of oil passages and a plurality of valve elements. Background technique [0002] A kind of hydraulic equipment often needs to design four oil circuits from the oil tank to the actuator, that is, one pressure oil circuit, one return oil circuit and two oil circuits connected to the actuator. In order to meet the maintenance requirements, it is necessary to Install a cut-off device such as a one-way valve or a cut-off valve, so that multiple pipes and multiple valve elements take up a lot of space, there are many interfaces, there are many possible points of oil leakage, and frequent maintenance is required, and maintenance is limited by space very difficult. When hydraulic equipment uses multiple actuators, it is often difficult to arrange piping and valve components due to space problems. Moreover, in most cases, multiple val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B20/00
Inventor 张天洪卓建标李振立
Owner 广州白云液压机械厂有限公司