Improved rotary four-way fluid reversing valve

A rotary and improved technology, used in multi-port valves, valve devices, cocks including cut-off devices, etc., can solve the problems of poor valve core and valve body sealing, difficult manufacturing, pressure drop, etc., to extend the conveying distance, Improve running speed and good sealing effect

Inactive Publication Date: 2013-03-13
银川东方气力运输设备有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the rotary four-way fluid reversing valve used in the pneumatic pipeline transportation system has a valve core structure such as Figure 4 As shown, the valve body is a cylinder with a through hole along the axis. The reversing valve with this structure has poor sealing performance between the valve core and the valve body, and the four cavities leak each other, resulting in energy loss. En

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  • Improved rotary four-way fluid reversing valve
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  • Improved rotary four-way fluid reversing valve

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Embodiment Construction

[0022] The structure of the present invention will be described below in conjunction with the accompanying drawings.

[0023] The improved rotary four-way fluid reversing valve of the present invention is mainly composed of a valve body 1, a valve core 2 installed in the valve body, an upper end cover 3 and a lower end cover 4 installed at both ends of the valve body 1 and a driving device 5. The inside of the valve body 1 is a cylindrical hollow cavity, on which there are holes I, II, III and IV communicating with the hollow cavity, and these four holes are symmetrically distributed on the valve body. The driving device 5 is connected with the shaft 9 installed on the valve core 2 through the coupling I6 and the coupling II7 and drives the valve core 2 to rotate. The improvement is that the valve core 2 is designed as a cylinder with an "I"-shaped cross section, and "U"-shaped grooves are opened on the upper and lower cylindrical surfaces, and the sealing ring 8 can be instal...

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Abstract

The invention relates to an improved rotary four-way fluid reversing valve, which comprises a valve body, a valve core and a driving device. The driving device is connected with a shaft on the valve core through a coupling I and a coupling II and drives the valve core to rotate. The improved rotary four-way fluid reversing valve is characterized in that the valve core is a cylinder with an I-shaped cross section. U-shaped grooves for installing sealing rings are arranged on the upper and the lower surfaces of the cylinder. When the valve core is installed in the valve body, the inner wall of the valve body squeezes the sealing rings to completely seal two parts of a hollow cavity of the valve body divided by the valve core. The improved rotary four-way fluid reversing valve provided by the invention is good in sealing performance, the conveying distance of a sample box is greatly prolonged and the conveying speed of the sample box is improved, and the improved rotary four-way fluid reversing valve is good in stability, simple in structure and simple to manufacture.

Description

technical field [0001] The invention relates to the field of pneumatic pipeline transportation, relates to a fluid reversing device, in particular to an improved rotary four-way fluid reversing valve with high sealing and high reliability. Background technique [0002] At present, the rotary four-way fluid reversing valve used in the pneumatic pipeline transportation system has a valve core structure such as Figure 4 As shown, the valve body is a cylinder with a through hole along the axis. The reversing valve with this structure has poor sealing performance between the valve core and the valve body, and the four cavities leak each other, resulting in energy loss. The waste of energy causes the pressure in the pipeline to drop. When the compressed air pushes the sample box forward, the speed and distance of the sample box are greatly reduced, which cannot meet the requirements of long-distance and fast transportation. In addition, the disc-shaped cam contour curved surface ...

Claims

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Application Information

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IPC IPC(8): F16K11/085F16K5/18
Inventor 苏伟慧姬承者吴平良赵胜杨志义杜银学孙朋飞张保辉
Owner 银川东方气力运输设备有限公司
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