Axial flow type single-seat adjusting valve

Abstract

The invention discloses an axial flow type single-seat adjusting valve, and belongs to the field of valve production. The axial flow type single-seat adjusting valve comprises a valve body, a stuffing device assembly, a valve rod, a valve core, a valve seat and a guide plate, wherein the valve rod is arranged at a stuffing box of the valve body through the stuffing device assembly; the valve seat is arranged at a liquid inlet passage of the valve body; and the valve core and the guide plate are arranged in the valve body. The axial flow type single-seat adjusting valve is characterized in that the liquid inlet passage and a liquid outlet passage at two ends of the valve body are arranged coaxially; the valve rod is arranged on one side of the valve body close to the liquid outlet passage through the stuffing device assembly; the guide plate is fixed on one side close to the liquid inlet passage in the valve body; the base part of the valve core penetrates through the guide plate and is in transmission connection with the bottom of the valve rod through a transmission mechanism, and the movable end of the valve core is arranged at the liquid inlet passage of the valve body and matched with the valve seat. Compared with the prior art, the axial flow type single-seat adjusting valve has the advantages of high flow coefficient, stable flow rate and the like and has high popularization and application value.

Description

technical field [0001] The invention relates to the field of valve production, in particular to an axial-flow single-seat regulating valve. Background technique [0002] The single-seat control valves in the prior art all adopt a Z-shaped valve body structure with low entry and high exit. On the one hand, when the medium flows through the valve body, a vortex phenomenon will be generated in the upper cavity, causing the radial vibration of the valve core and cavitation, which will cause erosion of the valve internals, thereby affecting the life of the valve and the adjustment performance of the valve; , because the flow resistance coefficient of the Z-shaped valve body structure is too large, the flow coefficient of the valve is reduced. Therefore, in the actual use process, it is often necessary to choose a valve with a larger diameter, and the use cost is higher; Unable to resolve. Contents of the invention [0003] The technical task of the present invention is to pro...

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Problems solved by technology

On the one hand, when the medium flows through the valve body, a vortex phenomenon will be generated in the upper cavity, causing the radial vibration of the valve core and cavitation, which will cause erosion of the valve internals, thereby affecting the life of the valve and the adjustment performance of the valve; , because the flow resistance coefficient of the Z-shaped valve body structure is too large, the flow coefficient of the valve is reduced. Therefore, in the actual use process, it is often necessary to choose a valve with a larger diameter, and the use cost is higher; can't solve

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