Working principle and structural characteristics of reversing valve 2

Working principle and structural characteristics of reversing valve 2

(1) The six-way valve has two sets of sealing components . Each set of sealing components consists of a valve disc, sealing ring, adjustment block, adjustment screw, plywood and bolts. The valve disc is made of carbon

Steel plate weldment with reinforcing ribs, which not only increases the strength of the valve disc but also acts as a guide to ensure the coaxiality between each group of valve discs. . The valve disc is inlaid with a polyurethane rubber ring

. This material has the characteristics of oil resistance, wear resistance, stable performance, good sealing and long service life. Under the action of the cam, the spherical surface of the sealing ring contacts the sealing surface of the valve body to produce extrusion elastic deformation to achieve a sealing effect. The adjusting block and adjusting screw can adjust when the two sets of sealing components cannot be synchronized to ensure that the sealing performance of each channel is synchronized.

Reversing valve

1 plywood 2 bolts 3 adjustment block 4 valve disc 5 sealing ring 6 Adjustment screws

(3) The axial seal between the valve stem, the valve body partition and the upper valve cover uses O-rings.

(4) The valve body partition plate and the upper valve cover shaft hole are inlaid with copper sleeves, which can reduce the friction torque between the O-ring and the O-ring. The sealing component can be opened and closed flexibly, and the operation is

The moment is small.

(5) The upper valve cover is equipped with an indicator plate and limit screws, and a pointer is installed on the valve stem to clearly indicate the connection status of each channel and is easy to operate.