Introduction to the structure and working principle of rubber wedge gate valve products
Rubber wedge gate valve products are a kind of gate valve. It is named because its sealing surface is at an angle to the vertical centerline, that is, the two sealing surfaces are wedge-shaped. Let's take a look at its structural features and working principles!
1. Structural features
Different from parallel gate valve, rubber wedge gate valve products also have wedge single gate valve. The two sealing surfaces of the most commonly used wedge gate valves form a wedge, and the wedge angle varies with valve parameters, usually 50. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce slight deformation to improve its manufacturability and compensate for the deviation of the sealing surface angle during the processing. The plate is called an elastic gate.
General-purpose rubber wedge gate valve products on the market are generally designed and manufactured in accordance with GB/T12234-2007 standards, with reliable sealing and excellent performance; usually, a wedge-type elastic gate structure is adopted, and rolling bearings are set with medium and large diameters, which are easy to open and close; rubber wedge gate Valve products are simple in shape, short in structure length, good in manufacturing technology, and have a wide range of applications.
2. Working principle
The opening and closing parts of rubber wedge gate valve products are gates, and the movement direction of the gate is perpendicular to the direction of the fluid. Rubber wedge gate valve products can only be fully opened and fully closed, which is not suitable for adjustment and throttling. Rubber wedge gate valve products generally complete the opening and closing of the valve by moving the valve stem up and down with the rotating handwheel. There are two kinds of bright pole and dark pole. The rising stem is the stem moves up and down, and the stem nut is fixed. The concealed stem gate valve is the stem is fixed, and the stem nut moves up and down to complete the opening and closing.