A micro pressure loss check valve

Abstract

The invention discloses a micro-pressure loss check valve, which comprises a valve body. A valve plate is arranged inside the valve body. The valve body and the valve plate are sealed through the sealing platform. Guide limit block; the edge area of ​​the left guide limit block is formed with a left limit edge, and the left guide limit block is provided with a left hole; the edge area of ​​the right guide limit block is formed with a right limit edge, and the right guide limit block There is a right hole; the left hole is provided with a left eccentric shaft, and the eccentric position of the left eccentric shaft forms a left rotating shaft; the right hole is provided with a right eccentric shaft, and the eccentric position of the right eccentric shaft forms a right rotating shaft; A shaft hole, the right ear body is provided with a right shaft hole, the left shaft extends into the left shaft hole, the right shaft extends into the right shaft hole, the valve plate rotates around the axis center of the left shaft and the right shaft, the left shaft hole and the right shaft hole The center connecting line is located at the eccentric position of the valve plate. The invention can make the fluid flow only along the required direction, solve the existing problem of large fluid resistance, and eliminate the vibration of the valve plate.

Description

technical field [0001] The invention relates to a micro-pressure loss check valve, which belongs to the technical field of fluid check valves. Background technique [0002] The one-way valve is a component widely used in fluids such as liquids and gases, which can make the fluid flow only in the required direction, and the fluid cannot flow backwards. The size of fluid resistance affects energy efficiency and energy consumption. For example, the existing American standard spring valve, check valve and butterfly check valve have large fluid resistance, and the vibration of the valve plate during use is large, resulting in high noise and short life. [0003] The Chinese patent with the publication number CN110242774A discloses an eccentric micro-pressure loss check valve, which is composed of an outer valve sleeve, an inner core base and a valve plate. There is a pin shaft, and the pin shaft connects the valve plate to the inner core base through a hinge, the valve plate rota...

AI Technical Summary

Problems solved by technology

The size of fluid resistance affects energy efficiency and energy consumption. For example, the existing American standard spring valve, check valve and butterfly check valve have large fluid resistance, and the vibration of the valve plate during use is large, resulting in high noise and short life.

[0003] The Chinese patent with the publication number CN110242774A discloses an eccentric micro-pressure loss check valve, which is composed of an outer valve sleeve, an inner core base and a valve plate. There is a pin shaft, and the pin shaft connects the valve plate to the inner core base through a hinge, the valve plate rotates around the pin shaft, and the sealing surface of the valve plate is compacted and sealed with the annular valve seat of the inner core base; although the flow channel of the invention The cross-sectional area is large, but it is only suitable for small-diameter check valves. Because the channel is large, the valve plate is opened from one side, and the force on the valve plate is large when it is closed, which will cause a large impact on the valve plate, resulting in deformation or fracture of the valve plate. It is not suitable for fluids with large caliber and super large caliber, and this kind of structure is also easy to cause the valve plate to vibrate

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