Li Yuxian's oil extraction in the Agricultural Mechanization School of Heilongjiang Province is a complex technical work. The level of oil production is related to the technical cooperation of all aspects of the whole process. The oil presses used in rural areas are mostly hydraulic oil presses. They are available in various models, but the basic principles are the same. They differ only in terms of structure and productivity. Manual hydraulic presses are used as an example to illustrate manual hydraulics. The operation points of the oil skimmer should be mastered at a temperature of more than 85 feet and the appropriate water content of the oil cake blank, so as to fully exert the function of the machine.
The oil used in the oil pump should be cleaned. After the working month, the oil tank oil circuit should be cleaned and the oil should be replaced or filtered. Otherwise, the oil contains impurities, which will cause the oil pump piston to wear or block the oil circuit, reducing work efficiency and even failing to work.
The movable surrounding beam is rotatable. When the material is loaded, the movable surrounding beam is opened, and the long root of the upper part of the movable surrounding rod is removed; after loading, the movable surrounding beam is replaced, and the opening part is first locked with the bolt on the pulling rod. Then, tighten the bolts on the movable surrounding beam and the cover plate, and adjust the movable fence to the position where the gap is separated from the cake circle.
When pressing the cake blank, it should be flattened and not skewed, so as to avoid stressing the frame on one side and breaking the surrounding beam or damaging other parts. After the frame is hung, there is no excessive gap between the cake ring and the fence, and it should not be passed to death. The cake ring can be moved up and down freely, and it should be carefully checked after loading the cake.
The operation method of the oil pump is to lift the handle up, do not raise it too high when lifting, and have rhythm up and down, uniform force, do not violent impact, when the low pressure medium pressure, the man can operate; high pressure 30 cubits or more It is ok to use both hands to operate. It is strictly forbidden to use a long handle to save effort. Do not swing the handle to the left or right to avoid breaking the plunger.
When pressing oil, it is necessary to master the principle of fast, light and heavy, and keep the oil flow constantly. That is, the speed is fast, the pressure is light, and the oil is released as soon as possible; after the oil, the pressure is lightly pressed, and the pressure is not too strong. The oil circuit is blocked, and it is necessary to leave some time for the oil to flow out; when the pressure is reached to a certain level, it is necessary to slowly press it to make the residual oil in the cake as much as possible.
Pay close attention to the position of the pressure pointer during operation and keep abreast of the pressure. When the pressure reaches 36 MPa, it can no longer be pressed. If the pressure exceeds 39,3 or more and the safety valve does not work, it should be relieved and repaired.
The maximum rising height of the piston is 500mn. It is not allowed to pass the stop plate of the nail plate on the nail to avoid the accident of the piston coming out of the cylinder. If the cake is not squeezed after it has been pressed into the sign, it should be removed and added.
When the pressurization is finished, the loose handle should be loosened slowly, so that the pressure is easy to damage the pressure. When the pressure is used for about a year, it should be sent to the relevant department for verification.
When the oil press is working, it is forbidden to tighten the joint screws with a wrench, and it is not allowed to hit the various parts of the machine with a hammer wrench or the like. If it is necessary to tighten the screws, it should be done after the pressure reduction.
The oil press should not be used or parked in the open air to prevent the machine from rusting. After the work is done every day, clean the inside and outside of the oil press. When parking for a short period of time, oil the rust-resistant parts and cover them.
The cause of the malfunction is that the oil pump can not pump too much oil, the filter or the oil inlet valve and the pipeline block the bottom valve. The oil in the fuel tank is too strong or the oil is filtered or replaced due to the lack of oil in the solidified fuel tank. Clean the bottom valve and pipeline of the fuel tank filter to replace the damaged steel ball spring, grind the valve seat to replace the thin oil, improve the room temperature in winter, fill the fuel tank with oil tank, leak the oil pump, the plunger is not tight, and the oil pipe joints are leaking. Plug replacement seal tightening or repair joint oil pump pressure is not enough out of the oil valve failure, the handle automatically raises the small plunger or large plunger hole wear gap is too large to replace the damaged steel ball spring, or the grinding valve seat to change the matching plunger Or re-matching the pump body fresh piston seal bad seal loss of elasticity or damage seal ring reverse replacement seal ring to remove the seal ring, wash heavy safety valve failure oil is not clean, stain the valve needle, so that the contact surface is not strict valve needle Wear with the valve, the contact surface is not tight, the spring is damaged or deformed, the inspection is removed, the cleaning is removed, the grinding or replacement of the deformation deformation spring or the replacement of the damaged spring is carried out, and the cake is floated and the cake is covered with water. When the temperature of the cake is too high, the temperature of the cake is too low and too urgent to reduce the moisture of the cake. The temperature of the cake should be kept at the temperature of the cake. Generally, the corpse should not be low. Please pay attention to the operation method.
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