Slurry special-purpose reversing valve

Abstract

The invention provides a slurry special-purpose reversing valve. According to the slurry special-purpose reversing valve, a reversing valve seat is provided with a slurry inlet passage, a first slurryoutflow passage and a second slurry outflow passage, axis lines of the first slurry outflow passage and the second slurry outflow passage are at an intersection position, a reversing valve core is cylindrical, the cylindrical inner cavity of the reversing valve core is a hollow inner cavity, the side face opening position of the hollow inner cavity of the reversing valve core is matched with positions of the first slurry outflow passage and the second slurry outflow passage and communicates with the first slurry outflow passage and the second slurry outflow passage correspondingly when beingrotated to a corresponding angle, and an axial opening of the reversing valve core communicates with the slurry inlet passage. The slurry special-purpose reversing valve has the advantages that compared with general three-way ball valves, the valve seat and a valve body are both cylindrical, cylinder and cylinder are in clearance fit, because a gap is quite small, cement cannot coagulate in the gap and even cannot enter the gap, no spare space exists in the passages to coagulate slurry, the slurry in the passages is always flowing whether in a circulation state or in a slurry releasing state,and the slurry special-purpose reversing valve is not prone to being coagulated and jammed and convenient to clean.

Description

technical field [0001] The invention relates to the technical field of mud processing, in particular to a mud special reversing valve for producing concrete mud. Background technique [0002] At present, the reversing valves on the market are generally three-way valves, and the main forms are T-type and L-type: the T-shaped valve seat and the valve body both have three holes; the L-shaped valve seat has three holes, and the valve body It has two holes. The valve seat passages of these two valves are cylindrical, and the valve body is spherical. Their common defect is the fit between the ball and the cylinder, and there is a large space between the ball and the cylinder. This valve is used for mud occasions. The space between the ball and the cylinder must accumulate cement to cause the valve to be stuck. For mud occasions, the T-type has one more defect than the L-type: no matter whether the T-shaped valve is in the circulation or the slurry state, there is a hole that is ...

AI Technical Summary

Problems solved by technology

For mud occasions, the T-type has one more defect than the L-type: no matter whether the T-shaped valve is in the circulation or the slurry state, there is a hole that is free and is facing the inner wall of the valve seat. The inner wall will inevitably accumulate cement and cause the valve to be stuck.

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