Six-directional control valve is mainly composed of the body, sealing components and CAM, the valve stem and handle and cover parts. Valve driven by handle, with the handle to drive the stem and the CAM rotation, CAM has the drive and lock seal assembly of opening and closing function. Handle counterclockwise, two groups of sealing components under the action of CAM, respectively from the lower pole of the closed two channel, two channel and pipeline installation at the top of the import is same. On the other hand, the top two channel closed, the bottom two channel and pipeline installation imports are interlinked, realizing the non-stop reversing.
Six-path reversing valve 1 handle cover 2 hand wheel 3 stem 4. CAM 5 the sealing components 6 valve cover 7 valve body
Six-path valve body (1) by the baffle plate is divided into two cavities, each cavity has three channels, the middle is the oil inlet and both ends are the oil outlet. The valve body for carbon steel welding structure, small size, light weight, compact structure, and improve the material utilization rate, shorten the production cycle, reduce the cost. Sealing surface welding stainless steel, rust corrosion, sealing surface after finishing polishing grinding, the surface roughness is 0.8¦Ìm or less.
(2) six valve have two sets of sealing components. Each group of sealing components changed from disc, ring, block, adjusting screw, clamp and bolt. Disc for carbon steel plate welding pieces, strengthening ribs, increase the intensity of the disc and guiding role, to ensure alignment between each group of the disc. Enchase polyurethane rubber ring on the disc, the material has oil resistance, wear resistance, stable performance, good sealing and long service life characteristics. Under the action of CAM, sealing ring of the sphere contact with the body sealing faces compresses the elastic deformation, to achieve sealing effect. Adjust the block and adjusting screw seal assembly can't synchronization in place when the two groups can adjust the role, to ensure the synchronization channel sealing performance in place.
Seal assembly 1 plywood 2 bolts 3 adjustment block 4 disc 5 sealing ring 6 screws
¡¡
(3) the diaphragm valve stem and valve body and axial seal between the valve cover adopt o-ring.
(4) the body on the baffle plate and cover the shaft hole with a copper ring, can reduce the friction torque between the o-ring and, opening and closing flexible sealing components, the operating torque is small.
(5) on the bonnet with signs and limit screw, installed on the valve stem pointer, clear instructions on condition of each channel, easy to operate.
Home > News > The characteristics and working principles of the reversing valve 