The Yiling diaphragm pump features a flow adjustment mechanism that works by changing the piston stroke through a rotational adjustment system. This system allows users to control the pump's output by rotating a handwheel, which is marked on a dial for easy reference. As the handwheel turns, it translates the axial movement into radial displacement via an adjustable shaft and a sliding shaft. This motion is then transferred to an eccentric component through a groove on the sliding shaft, which pushes the piston via a connecting rod. As a result, the piston's stroke changes, allowing precise control over the pump’s flow rate.
Unlike other types of pumps, repairing a diaphragm pump requires specific attention to detail and proper handling of its unique components. Here are some key steps to consider during maintenance:
1. When inspecting the pump valves, check if the sealing rings have aged or deformed, whether the spring has lost its elasticity, and if the valve seat or core is worn or corroded. Ensure the valve end surface is flat and aligned with the pump body flange when installing.
2. When replacing the diaphragm, lift the pump head carefully before disassembling to avoid damage from accidental drops.
3. During the disassembly of the adjustment mechanism, make sure to calibrate the stroke length (which should be 5mm). Remove the scale holder and slide the scale ring into the correct position. The actual stroke length must match the scale exactly to ensure accurate performance.
4. When removing the piston, use a specialized pointed tool to extract the packing ring from its groove, being careful not to damage the ring groove itself.
5. Inspect the worm and worm gear for any cracks, broken teeth, or signs of wear. Check the meshing contact between the gears to ensure smooth operation.
Proper maintenance and adjustment are essential for the long-term efficiency and reliability of the Yiling diaphragm pump. Always follow the manufacturer’s guidelines and use the correct tools and techniques to avoid unnecessary damage or malfunction.
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