The working principle of the Reversing valve

       Reversing valve is with more than two kinds of flow patterns andmore than two port directional control valves. Is the communication of hydraulic oil flow, cut and reversing valve, andpressure unloading and sequence control.

     Working principle

      Six way reversing valve mainly by the valve body, sealing components, cam, valve stem, a handle and a valve cover and other parts (Figure 1). Valve driven by the handle, the stem and the cam driven by rotating the handle, the positioning and lockingcam is driven to open and close the function of sealingcomponents. Handle counterclockwise rotation, two channels,two components were sealed under the action of the cam shut off, imports of the top two channels respectively communicatedwith the pipeline device. On the contrary, the top two channels close, import the bottom two channels and communicated with the pipeline device, realizes not parking reversing.

     1.Valve cover on the valve stem 4 5 3 2 handle cam 6 valve cover7 valve seal assembly

     (1) the valve six way valve is divided into two cavities, each cavityhas 3 channels, the middle of the inlet, at both ends to a port.Valve for the carbon steel plate welding structure, small volume,light weight, compact structure, improves the utilization rate of materials, shorten the production cycle, reduces the cost. The sealing surface surfacing stainless steel, anti rust and corrosion resistance, sealing surface after fine processing, polishing,surface roughness Ra ≤ 0.8 μ M

      (2) the six way valve has two groups of seal assembly. Each seal components (Figure 2) from the valve, sealing ring, an adjusting block, the adjusting screw, plate and a screw bolt. Valve for the carbon steel plate weldment, is provided with a reinforcing rib,which increased the valve strength also plays a role of guidance,to ensure concentricity between each valve. Polyurethane rubber disc inlaid ring, the material has oil resistance, abrasion resistance, stable performance, good sealing and long service life. Under the action of the cam, the sealed spherical valve ringsealing surface contact produce compression elastic deformation, achieve the effect of sealing. Adjustment block andadjust the screw in the two group of sealing components cannot be synchronized in place can perform adjustment function,ensuring the sealing performance of synchronous channels in place.

WJ Reducer

     1 ply 2 bolt 3 adjusting blocks 4 valve 5 sealing rings 6 adjusting screw

     (3) The valve rod and the valve body and valve cover on thepartition between the axial sealing O ring.

     (4) Valve diaphragm and the valve cover is inlaid with copper sleeve shaft hole parts with O shape, can reduce the friction torque between the turns, open and close the flexible sealing component, small operation torque.

      (5) On the valve cover with signs and limit screws, install the valve stem pointer, clear instructions on condition of each channel,easy to operate.

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