Rotary quantitative oil supply device

Abstract

The invention discloses a rotary quantitative oil supply device, which aims to solve the problems that oil or grease cannot be supplied quantitatively in the prior art. The device comprises a rotor, a stator and a rotation control device, wherein at least one metering cavity which is vertical to a rotator axis is formed in the rotor, pistons are arranged in the metering cavity, and the metering cavity is divided into first cavities and second cavities by the pistons; an oil inlet channel and an oil outlet channel are formed at the positions, corresponding to each first cavity and each second cavity, on the stator; and the rotation control device controls the rotator to rotate at a preset phase angle. The oil supply way of the invention fulfils the aim of quantitatively supplying grease, provides an optimal design scheme for terminal control of intelligent lubrication and solves the problem of more faults in the conventional work process.

Description

technical field [0001] The invention relates to a rotary quantitative oil supply or grease supply device. Background technique [0002] The existing quantitative grease supply method mainly adopts the combination of electromagnetic valve type and magnetic induction type. [0003] For the solenoid valve type, most of the terminal actuators in the current intelligent lubrication products use a plunger-type two-position two-way plus a simple magnetic sensor combination to achieve timing and quantitative grease supply; there is also a spherical The combination of two-position two-way and magnetic sensor can realize timing and quantitative fat supply. No matter what method is used to realize the fat supply, it must be realized through the power-on and power-off of the solenoid valve. (Note: When energized, the electromagnet pushes the valve core to move, so that the inlet and outlet are connected. When the power is off, the return spring on the other side of the valve body make...

AI Technical Summary

Problems solved by technology

) In fact, in the actual working process, the working performance of the electromagnet is not reliable, and it is easy to produce defects such as malfunction. The reasons are as follows:

[0004] 1. Affected by the cleanliness of the grease, sometimes the valve core in the solenoid valve is stuck and unable to work;

[0005] 2. Affected by the viscosity of the grease, the load of the initial force of the electromagnet is loaded without profit, so the valve core inside the valve body cannot be pushed and cannot work;

[0006] 3. Since the plunger type two-position two-way valve is designed with an overflow port, the oil will eventually overflow naturally, which affects the working environment;

[0007] 4. If a lubricating point on the system pipeline requires a large amount of grease, the electrification time set by the electromagnet will also increase accordingly, which will easily burn out the electromagnet and cause it to fail to work;

[0008] 5. Even if the spherical two-position two-way valve is used as the terminal control valve, if there is dirt in the grease, when the valve is closed, the cone surface of the valve is not sealed and the valve is in a normally open state, which affects the work of the entire system

[0011] 1. Affected by the length of the system pipeline, the longer the pipeline, the greater the internal pressure loss, so the oil output of each oil supply device in the same unit time is not equal (influenced by pressure loss)

[0012] 2. Affected by the output pressure of the lubricating pump of the system, each point with high pressure will output a large amount of oil per unit time, and vice versa, and the output pressure of the pump is actually not a constant value, it has a swing (influenced by pressure fluctuations)

[0013] 3. The manufacturing accuracy of the magnetic induction device itself will also affect the amount of oil output (the size of the oil outlet, the accuracy of the spring, etc.)

[0014] Due to the influence of the above three reasons, it is difficult to control the oil volume setting of each point. It is only a thick frame method, which has a waste of oil to a certain extent and is uneconomical.

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