Causes and Solutions for Shot Blasting Machine Oil Leakage
Oil leakage is a common issue encountered during the operation of shot blasting machines, such as oil leaking from the engine's rotating shaft, switches, or oil plugs. If left unresolved, these problems can affect the machine's performance and longevity. Based on extensive experience in shot blasting machine manufacturing and maintenance, ZMDE provides the following detailed analysis of common oil leakage causes and corresponding solutions.
1. Oil Leakage from the Engine's Rotating Shaft
Causes and Solutions:
- Cause: Wear and tear between the shaft and the bore.
- Solution: Machine a seal groove on the starter's gearshift shaft or clutch handle shaft using a lathe, and install appropriate sealing O-rings to restore sealing performance.
- Cause: Aging or failure of the decompression shaft's sealing ring.
- Solution: Replace the old sealing ring with a new one to ensure effective sealing.
2. Oil Leakage from the Engine's Oil Plug
Types of Oil Plugs: Tapered plugs, flat plugs, and process plugs.
Causes and Solutions:
- Cause: Damaged or defective oil plug screws.
- Solution: Replace the damaged screws with new ones.
- Cause: Damaged oil plug threads in the bore.
- Solution: Enlarge the thread size in the bore and install a new oil plug.
- Cause: Worn tapered plug.
- Solution: Re-tap the thread and replace the tapered plug with a flat plug, adding a sealing washer to restore sealing.
3. Oil Leakage from Engine Switches
Types of Switches: Water valves, fuel tank switches, and gasoline switches.
Causes and Solutions:
- Cause: Ball valve wear or corrosion.
- Solution: Clean rust and debris from between the ball valve and the seat hole, and replace with an appropriate steel ball if necessary.
- Cause: Damaged sealing filler or fastening threads.
- Solution: Replace the sealing filler, repair damaged threads, or replace the fasteners.
- Cause: Poorly sealed tapered joints.
- Solution: Grind the joint with fine valve lapping paste and lubricating oil to ensure a tight fit.
4. Oil Leakage from Flat Plane Joints
Types of Joints: Sealed with paper gaskets, asbestos gaskets, or cork gaskets.
Causes and Solutions:
- Cause: Uneven contact surface or scratches and burrs on the joint.
- Solution: Smooth the contact surface using a file, fine sandpaper, or oilstone. For larger components, use a milling machine to level the surface.
- Cause: Poor-quality or damaged gaskets.
- Solution: Use high-quality gaskets and ensure proper cleaning and alignment during installation.
- Cause: Loose bolts.
- Solution: Tighten all mounting bolts securely.
5. Oil Leakage from Pipe Connections
Types of Connections: Tapered joint connections and hollow bolt pipe connections.
Causes and Solutions:
- Cause: High-pressure oil pipe joint wear, deformation, or cracking.
- Solution: Cut off the damaged portion of the pipe and weld on a new joint.
- Cause: Damaged low-pressure oil pipe joint.
- Solution: Recreate the pipe’s flared end to restore its function.
- Cause: Thread damage.
- Solution: Repair or replace the damaged threads.
Hollow Bolt Pipe Connections:
- Cause: Damaged or unevenly mounted gaskets.
- Solution: Replace the gasket with a plastic one, or smooth the surface with a file or sandpaper. For severe cases, use a milling machine.
- Cause: Surface scratches or impurities on the contact area.
Conclusion
Although oil leakage is a common challenge for shot blasting machines, timely inspection and maintenance can effectively prevent and resolve these issues. ZMDE is committed to providing high-quality shot blasting machines and comprehensive technical support. If you encounter oil leakage problems or need assistance, contact us for professional solutions.
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