Pre-flushing refined filtration oil filling circuit device

Abstract

The invention relates to a pre-flushing refined filtration oil filling circuit device. The pre-flushing refined filtration oil filling circuit device is characterized by comprising a first refined filter, a second refined filter, a pre-flushing oil tank, a temperature controller, a main system oil return filter set, a main oil tank circulating filter, a main oil tank, an oil-water-gas separator, a main system circulating pump, a first high-flow flushing pump set, a second high-flow flushing pump set, a circulating pump and a main control cabinet. The main control cabinet is used for conducting logic control over elements including an electric control valve. The pre-flushing oil tank temperature controller is installed on the pre-flushing oil tank to detect and control the temperature of the pre-flushing oil tank. A main oil tank oil return filter is connected to the main oil tank and used for filtering return oil of a main system. The main system circulating pump and the circulating filter are connected to the main oil tank and used for conducting continuous circulating filtering on oil in the main system oil tank. The oil-water-gas separator is connected with the pre-flushing oil tank and the main oil tank through the electric control valve.

Description

technical field [0001] The invention relates to an oil-filled circuit, in particular to an oil-filled circuit device for preflushing and fine filtration, and belongs to the technical field of hydraulic transmission. Background technique [0002] In the hydraulic transmission system, the accuracy and quality of the hydraulic oil is the basic premise to ensure the stable operation of the hydraulic system. According to statistics, more than 85% of the failures of the hydraulic system are caused by the contamination of the hydraulic oil and the substandard accuracy. Especially with the improvement of product quality requirements in the market in recent years, the currently designed production lines use a large number of servo systems to improve control accuracy, which puts forward higher requirements for the oil precision of hydraulic oil. Therefore, the system is generally equipped with multi-channel filters to filter the oil multiple times to improve the accuracy of the oil in...

AI Technical Summary

Problems solved by technology

Without enough liquid level, the hydraulic pump will suck down and damage the internal components, and the actuator will lose control because there is not enough driving medium

However, the various hydraulic systems currently designed have caused many failures and even potential safety hazards because the above basic conditions are sometimes not guaranteed. The hydraulic servo system often exposes the following problems during use: 1) The production site is often mistaken for The new oil must be clean oil and the oil is directly added to the main oil tank. However, according to the test, the accuracy of the initial oil is basically NAS7~9, which does not meet the NAS5 accuracy requirements of the servo system. After directly adding the oil to the system, the circulating filter pump needs Cycle for a period of time to meet the requirements

Chinese patent CN104196831 discloses "Hydraulic System Flushing Device", which realizes that the flushing device can be disassembled and used repeatedly through the connection of the valve table header and the corresponding hose. This is a way to avoid waste during installation and construction. For the main site How to detect and flush the circuit is not clearly explained, and the problems of oil pre-flushing and oil filling in the main circuit are not mentioned; Chinese patent CN 103321988A discloses "A Method for Filtering and Purifying Hydraulic Oil", which provides a main system oil filter method, but it does not mention the accuracy of the new oil, and there is no suitable solution for how to automatically compensate the liquid level drop in the main system; The oil treatment system processes the oil in the online main oil tank, and returns the treated oil to the main oil tank, so as to achieve the purpose of purifying oil and turning waste oil into useful oil

However, this is still a device for treating oil in the main system, and this device does not describe clearly how to ensure the liquid level of the main system when dealing with dirty oil, and it does not mention how to deal with new media. Therefore, There is an urgent need for a new solution to the above technical problems

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