The conical valve can be divided into buried pipe, a conical valve body, a sleeve, a worm gear reducer, a few screw machine pull rod and a balance beam sections. The structure is divided intothe outer sleeve and the inner sleeve form form form, the outer sleeve body fixed, use of worm gear reducer screw machine to open the outer sleeve barrel closed activities, to open and close the valve.

It has the following advantages:

1 hydraulic condition is good, the flow coefficient of u=0.75 ~ than other valves high 0.83 or higher;

2 has the advantages of simple structure, light weight;

The 3 opening and closing force is small, the human portable operation, without power applied insmall-scale water conservancy project sites, when necessary, the user can be in a worm gear reduction box is connected with the other side is additionally provided with a motor, electric hoist mechanism into operation;

4 discharge when the spray water tongue is a trumpet shaped, air diffuser, energy dissipation effect is good, generally do not do dissipation measures, such as setting for a submerged flow, waterunder the energy dissipation is also very simple;

5 the equipment layout is compact, flexible operation, convenient operation and management,reliable.