Centrifugal oil purification device

Abstract

The invention discloses a centrifugal oil purification device. The centrifugal oil purification device comprises a central shaft, a centrifugal drum, a shaft seat, a rotary framework, a disc-type guide plate, an oil gathering impeller, a rotary wheel, a vacuum pump, an oil outlet pipe, an oil inlet pipe, an oil drainage box, a storage box, an oil tank and a PLC (programmable logic controller), and is characterized in that an alarm oil tank is arranged at the inner top of a body of the oil tank, a liquid level meter is arranged in the alarm oil tank, an oil inlet is formed in the upper portion of one side of the alarm oil tank above the liquid level meter, an oil outlet is formed in the lower portion of one side of the alarm oil tank below the liquid level meter, and the oil inlet is communicated with the centrifugal drum via the oil inlet pipe. The centrifugal oil purification device has the advantages of novel structure, precision in control, low failure rate, high operation efficiency, energy saving and environmental protection.

Description

technical field [0001] The invention relates to the technical field of oil purification equipment, in particular to a centrifugal oil purification device. Background technique [0002] As we all know, in order to save energy, the used oil is usually treated by oil purification equipment, and the solid particles and gas particles in the oil are separated and reused. [0003] After retrieval, CN 101648166 B discloses an invention patent of a high-precision centrifugal oil purifier, including an intake hose, a gear pump, a centrifuge, a sewage tank, a motor and an oil outlet pipe, and the intake hose and the input of the centrifuge The interface is connected to form the oil inlet pipeline, and the output interface of the centrifuge is connected with the oil outlet pipe to form the oil outlet pipeline. The high-precision centrifugal oil purifier has a PLC controller, a flow valve, a pressure sensor, a temperature sensor, and an adjustable check valve. The PLC controller control...

AI Technical Summary

Problems solved by technology

When the oil purification effect is poor, the oil channel can be switched through the manual valve, and the oil outlet of the centrifugal barrel is connected with the oil inlet of the centrifugal barrel. The oil is purified through the centrifugal barrel many times to achieve the purpose of fine filtration. The substantial disadvantages are: One is that there is a large-flow gear pump in the main oil circuit, that is, the gear pump uses a high power of at least 4KW, which greatly disturbs the oil and accelerates the emulsification of the water-containing oil

Large energy consumption, does not meet the requirements of energy conservation and environmental protection

[0004] The second is that there is no reliable signal detection for the air discharge in the centrifugal bucket. The gear pump is set to work for 3-5 minutes according to the empirical value and then the centrifugal bucket drive motor is turned on. and flow area have a greater influence

The incomplete air discharge in the centrifuge bucket affects the efficiency and effect

[0005] The third is that the air mixed in the oil cannot be eliminated

[0006] Fourth, it cannot be demulsified

[0007] Fifth, there is a filter element in the centrifuge bucket, and there are consumables, and the life of the filter element has a great impact on high-speed rotation

[0010] First, because the oil tank is the flow buffer device of the oil purifier, oil and gas are separated in the oil tank. The purified oil first enters the oil tank, and then enters the purification cylinder through the bottom of the oil tank. During the oil purification process, the oil drain box is usually used to clean the oil. The leaked oil or the oil that automatically flows down from the attached oil tank after the exhaust is completed is collected. When the oil in the oil drain box is full, the oil in the oil drain box is returned to the closed oil tank for repurification. However, the liquid level detection of the existing centrifuge oil drain box uses a mechanical floating ball to detect the liquid level. The floating ball controls the opening and closing of the one-way valve through the lever. The directional valve recovers to the dirt receiving box, its disadvantage is that it cannot automatically judge the negative pressure value in the dirt receiving box, and the liquid level in the oil drain box is kept at a critical level during normal operation, and the recovery work is frequently opened and closed, and it is easy to mix in the gas. The dirt receiving box causes the pressure to drop, resulting in insensitivity and unreliability of the one-way valve tube in the use of the float, high failure rate and low work efficiency

Some are controlled by setting a liquid level gauge in the oil drain box. When the oil in the oil drain box reaches the upper level, the liquid level gauge uploads the information to the control system, and the control system instructs the oil drain motor to act, and the oil in the oil drain box The oil is pumped into the oil tank through the oil discharge pump, and then re-purified. When the oil in the oil drain box reaches the lower position, it means that the oil in the oil drain box is pumped clean, and the oil drain motor stops working. The disadvantage is that the oil drain pump High energy consumption, can not achieve the purpose of energy saving and environmental protection

[0011] The second is that the lower end of the centrifuge cylinder is sealed and connected with the shaft seat body through a sealing device, which includes a shaft seat body, a graphite ring seat, a graphite ring, a sealing frame and a rotating frame. The oil outlet pipeline is connected with the oil drain box, the oil receiving groove is a horizontal groove, the graphite ring seat is connected with the central axis of the shaft seat body with a threaded pipe thread, the graphite ring seat is provided with a graphite ring at the upper end, the The graphite ring seat is sleeved with a rotating frame, which is matched with the graphite ring through the sealing frame, and the rotating frame drives the sealing frame to rotate at high speed, so that an oil film is formed between the sealing frame and the graphite ring, and then an oil seal is formed. : During the long-term high-speed rotation, friction occurs between the graphite ring and the sealing frame, and the gap becomes larger and larger. When the oil leakage is greater than the oil output of the oil tank, the oil leaks out of the centrifugal cylinder along the gap , resulting in poor performance of the equipment, frequent repairs, resulting in extremely low production efficiency

[0012] The third is that during the high-speed centrifugal rotation of the centrifuge cylinder, due to the stress concentration caused by the circlip block to the tension groove of the circlip block of the centrifugal cylinder, the circlip block damages the side wall of the tension groove of the circlip block and forms a gap, resulting in Centrifugal cylinder and butterfly skeleton sealing failure

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