Troubles And Troubleshooting Methods Of Automatic Hydraulic Oil Press
The oil press is composed of two parts: hydraulic and press. Its common faults and troubleshooting methods are as follows.
1. The hydraulic pump pressure is not enough
the reason is:
①The oil outlet valve is dirty or has poor contact; ②The oil inlet and outlet valve screw plugs on the press are in poor contact with the valve seat or are not tightened, resulting in oil return; ③The wear gap between the small piston and the pump body is too large. The corresponding elimination methods are: ① After disassembly and washing, grind to make it close; ② Grind the oil inlet and outlet valve plugs and valve seats on the press to make them close or tighten the plugs; ③ Replace the pump with a new one.
2. The hydraulic pump can't pump oil
the reason is:
①The oil filter is blocked; ②The oil has been used for too long, and there are sediments attached to the fuel inlet valve, which makes the throttle not tight; ③The oil in the fuel tank is too thick or solidified due to weather; ④The amount of oil in the fuel tank is insufficient; ⑤Hydraulic There is no vacuum in the pump. The corresponding elimination methods are: ①clean the oil filter; ②replace the new oil or release the old oil; filter and clean the oil inlet valve, and grind it to make it tight; ③replace the thin oil, and increase the room temperature in cold weather; ④ Add enough oil to the oil tank; ⑤ Pull out the small piston, fill in the oil and press it again.
3. The pointer of the pressure gauge cannot be maintained, and it drops rapidly
the reason is:
①The safety valve is not sealed; ②The oil inlet and outlet valve plugs and the steel ball are in poor contact; ③The oil pipe joints and the hydraulic cylinder screw plugs and the hydraulic cylinder's oil inlet are not tightened; ④The three-way oil return valve is in poor contact with the steel ball. The corresponding elimination methods are: ① Grind the safety valve to make it tight; ② Grind the inlet and outlet valves to make it tight; ③ Tighten the oil pipe joints and hydraulic cylinder plugs; ④ Grind the oil return valve.
4. Push up the rocker
the reason is:
①The oil outlet valve is in poor contact with the steel ball; ②The spring head is separated from the steel ball. The corresponding elimination methods are: ① Grind the oil outlet valve and replace it with a new steel ball; ② Expand the spring head.
5. Bureau materials
the reason is:
①The temperature of oily material is not suitable for steaming and frying, the material temperature is too low, and the water content of the cake is too high; ②The thickness of the cake is uneven; ③When the cake is loaded, the stack of cakes is not correct; ④The pressing is too fast and too strong. The corresponding elimination methods are: ①Adopt proper steaming and frying direction, increase the material temperature to above 85℃, and the moisture content is less than 7%; ②Pay attention to the uniform thickness of the cake when making the cake; ③When loading the cake, the cake should be folded; ④appropriate Reduce the pressing speed.
6. The oil leaks from the gap between the hydraulic cylinder and the piston
the reason is:
①The mouth of the leather bowl is installed wrongly; ②The leather bowl is damaged. The troubleshooting method is: reinstall the leather bowl and replace with a new leather bowl.
7. Safety valve failure
The reasons are: ①The oil is not clean, and the dirt settles on the contact surface; ②The spring loses its elasticity; ③The adjustment screw is loosened and does not reach the specified pressure; ④The valve is damaged by the steel ball due to frequent overpressure operation. The corresponding elimination methods are: ① Disassemble and clean, if the valve port or valve needle is damaged, grind; ② Replace the spring; ③ Re-adjust the screw to make the pressure reach 40 MPa; ④ Re-grind the valve, replace the new steel ball and pay attention to the operation procedure .
