Displacement type double valves lubrication apparatus

Abstract

The invention discloses a positive displacement double valve lubricating device, which is invented to solve the problem in the prior art that the quantity of oil supply is difficult to be controlled. The positive displacement double valve lubricating device comprises an oil inlet pipeline and an oil outlet pipeline; a pump cavity, wherein, two oil conveying openings are arranged at both ends of the pump cavity; a piston is arranged in the pump cavity, and the pump cavity is divided into two separate cavities at the right and the left sides by the piston; a first control device which ensures the oil inlet pipeline to be communicated with the oil conveying opening at the left side of the pump cavity and the oil conveying opening at the right side of the pump cavity to be communicated with the oil outlet pipeline when being operated; a second control device which ensures the oil inlet pipeline to be communicated with the oil conveying opening at the right side of the pump cavity and the oil conveying opening at the left side of the pump cavity to be communicated with the oil outlet pipeline when being operated; a conversion device which is used for selecting the first control device or the second control device to be operated according to the piston position in the pump cavity. The structure bi-directionally controls the piston to be acted back and forth in the pump cavity through the control devices, thus each action of oil supply is finished; because the sectional areas of the pump cavity and the piston displacement are definite, the quantity of oil supply is accurate and controllable.

Description

technical field [0001] The invention relates to a lubricating device, in particular to a volumetric double-control lubricating device. Background technique [0002] In modern large-scale equipment control, as shown in Figure 3, the actions of each component in the equipment are realized through remote human-computer interaction, and this action also includes adding lubricating oil to the equipment. [0003] As shown in Figure 3, after receiving the instruction from the PLC programmable controller, the small electric control outputs an electric control signal to drive the electric control valve A, B or X to open, so that the lubricating oil in the lubricating pump is output through the electric control valve , after the output starts, the electric control valve feeds back the signal, and the small electric control calculates the output time to control the lubricating oil output. The oil supply of the electric control valve with this structure is greatly affected by the lubri...

AI Technical Summary

Problems solved by technology

The oil supply of the electric control valve with this structure is greatly affected by the lubricating oil pressure in the lubricating pump, that is to say, in the same unit time, the higher the lubricating oil pressure in the lubricating pump, the more lubricating oil is output; In the same unit time, the lower the lubricating oil pressure in the lubricating pump, the less lubricating oil is output, so the accuracy of the lubricating oil output is not high, which is not conducive to remote control

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