Cage sleeve type throttle valve

Abstract

The invention discloses a cage sleeve type throttle valve which comprises a valve body (14), a valve seat (15) installed in the valve body (14) and a spring (13) installed in a hole of the valve seat (15). A pressing ring (11) is pressed on the valve seat (15) after being connected with the valve body (14), the outer circle of the valve seat (15) is sleeved with a lower inner hole of a cage sleeve (7), and the outer circle of a valve rod (5) is sleeved with an upper inner hole of the cage sleeve (7). A valve deck (6) is installed on the valve body (14) and connected with the valve rod (5) through threads. A cylindrical filtering support (17) is connected with the lower end of the valve deck (6), the upper end of the valve rod (5) is connected with a hand wheel (1), the lower end of the valve rod (5) is connected with the cage sleeve (7), and a cage sleeve balance hole (71) in the cage sleeve (7) is communicated with a valve rod balance hole (51) in the valve rod (5). The cage sleeve type throttle valve is reasonable in structural design, low in noise, resistant to erosion and abrasion and long in service life, and flow can be precisely controlled.

Description

technical field [0001] The invention designs a throttling valve, specifically a cage-type throttling valve with stable performance, low noise, precise flow control, erosion resistance, wear resistance and long service life. Background technique [0002] The currently used throttle valves mainly include needle valve type throttle valve, disc type throttle valve, and cage type throttle valve, and the cage type throttle valve has a better throttling effect, but the cage type throttle valve There are the following disadvantages: (1) solid particles such as sand grains are accompanied in the fluid, and the mixed fluid directly scours the cage hole and valve seat at high speed, which will cause rapid wear and tear of the cage hole and valve seat, fast wear and short life. (2) The cage and the valve stem are in a gap connection or the cage and the valve stem are integrated, resulting in inaccurate flow control, unstable throttling and high noise. (3) When the valve is closed, the ...

AI Technical Summary

Problems solved by technology

[0002] The currently used throttle valves mainly include needle valve type throttle valve, disc type throttle valve, and cage type throttle valve, and the cage type throttle valve has a better throttling effect, but the cage type throttle valve There are the following disadvantages: (1) The fluid is accompanied by solid particles such as sand grains, and the mixed fluid directly washes the cage hole and valve seat at high speed, which will cause rapid wear and tear of the cage hole and valve seat, fast wear and short life

(2) The cage and the valve stem are in a gap connection or the cage and the valve stem are integrated, resulting in inaccurate flow control, unstable throttling and loud noise

(3) When the valve is closed, the cage and the valve core are in direct contact, resulting in a violent impact, resulting in damage to the cage

Images