CN103786066B - Centralized lubrication system of hydraulic station - Google Patents

Abstract

The invention discloses a centralized lubricating system of a hydraulic station, which comprises the hydraulic station, a superposed filter, a pressure reducing valve, a pressure gauge, a reversing valve, a pressure relay, a pressurized quantitative oil injection distributor, a pipeline, a joint and the like; the invention can reduce the power source of the lubricating system, replace the start and stop of the lubricating pump in the traditional centralized lubricating mode with the action of the reversing valve, effectively control the frequency and the supply time of the lubricating oil, and accurately control the oil supply quantity of each lubricating point by matching with the pressurized quantitative distributor, the reversing valve has the unloading function to ensure that the pressurized quantitative distributor can complete the complete action cycle, and the pressure relay can monitor the flowing condition of the lubricating agent in the system. The invention integrates hydraulic pressure and lubrication into a whole, reduces purchasing and manufacturing cost, and is beneficial to improving the reliability of a hydraulic lubrication system.

Description

Centralized lubrication system of hydraulic station

technical field

The invention relates to the technical field of hydraulic and lubricating equipment for machine tools, in particular to an integrated centralized lubricating system for hydraulic stations.

Background technique

Good lubrication of machine tool equipment is very necessary for reducing the wear of friction pairs, prolonging the operating life of machine tools, preventing accidents, reducing spare parts consumption, improving equipment integrity, and saving energy. Due to the rapid development of modern machine tool manufacturing technology, manual oiling and simple circulation lubrication can no longer meet the needs of various mechanical equipment, especially the friction pairs where the oil cannot be recovered. Too much oil will cause energy waste, additional heat and environmental damage. Pollution, too little oil will cause dry friction and reduce the precision and life of the friction pair. Therefore, it is necessary to improve the mechanization, automation and self-ability of the lubrication process of mechanical equipment. The independent centralized lubrication system adds a new power unit, which is bulky and expensive. If the centralized lubrication system is integrated into the hydraulic system, the above problems can be solved and the entire hydraulic and lubrication system can be optimized. In the centralized lubrication system, the pressure oil supplied by the lubricating pump device to the main oil circuit of the lubricating system is distributed to each friction side periodically through the distributor to keep a clean oil film on the friction surface.

Contents of the invention

In order to solve the above technical problems, the object of the present invention is to solve the integration problem of the hydraulic station and the centralized lubrication system, and disclose a centralized lubrication system of the hydraulic station which reduces the cost and improves the reliability of the hydraulic lubrication system. Replace the fine filter in the traditional centralized lubrication system with a superimposed filter to fine filter the hydraulic oil for the lubrication of the guide rail screw; replace the lubrication pump in the traditional centralized lubrication method by controlling the action frequency and action time of the reversing valve The start and stop of lubricating oil can effectively control the frequency and cycle of lubricating oil supply, and the system is equipped with a pressurized quantitative distributor to accurately control the oil supply of each lubricating point. The reversing valve must have an unloading function to ensure pressurization The pressurized quantitative distributor can complete the action cycle, that is, the pressurized quantitative distributor stores oil when the hydraulic system is pressurized, and fills oil when the hydraulic system is unloaded; a pressure relay is set in the hydraulic system to monitor the flow and pressure loss of the system. When an abnormality occurs in the lubrication system, the control system of the main engine can send an alarm or stop the operation of the main engine for timely maintenance. The specific technical solutions are:

A centralized lubrication system for a hydraulic station, including a hydraulic station, a stacked filter, a pressure reducing valve, a pressure gauge, a reversing valve, a pressure relay, a pressurized quantitative oiling distributor, pipelines and joints, etc.; the pressure gauge and pressure reducing The reversing valve is connected with the pressure reducing valve and the oil return pipe respectively; the hydraulic oil is pressed out from the pump station of the hydraulic station and flows through the stacked filter, the hydraulic oil is finely filtered, and then the pressure oil of the hydraulic system is filtered by the pressure reducing valve. Reduce to the suitable oil pressure of the lubrication system, and then send the oil to the pressurized quantitative oil distributor through the reversing valve; the pressurized quantitative oil distributor supplies the appropriate amount of lubricating oil to the friction pair of the machine tool.

The valve group can be fixed at any position, there is a group of valves in the valve group to realize the centralized lubrication function, the superimposed filter is fixed on the valve block, the pressure reducing valve is superimposed on the superimposed filter, and the external pressure gauge is connected to the pressure reducing valve , the reversing valve is superimposed on the pressure reducing valve, and a pressure relay is assembled on the valve block.

The right amount of lubricating oil is used for the lubrication of the guide rail screw by the pressurized quantitative oil distributor.

The pressure relay monitors the loss of pressure and flow of lubricating oil in the pipeline system, and the control system of the main engine controls the operation of the lubricating system.

In the present invention, the start and stop of the lubricating pump in the traditional centralized lubricating mode is replaced by the action of the reversing valve, and has an unloading function.

The beneficial effects of the present invention are:

The integrated device of hydraulic system and centralized lubrication system has simple structure, convenient control, low production purchase cost, stable and reliable, low failure rate, long service life, good interchangeability and universality, easy replacement of damaged parts, and traditional centralized The lubricating system has the same oil injection accuracy, and the lubricating effect is good.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is a schematic diagram of a pressurized quantitative oiling distributor;

Figure 3 is an outline drawing of the hydraulic station;

Fig. 4 is an assembly view of the centralized lubrication system part of the present invention.

detailed description

The present invention is specifically described below in conjunction with accompanying drawing, as shown in Fig. 1-Fig. Pressure-type quantitative oil injection distributor 7, pipelines and joints, etc.; pressure gauge 4 is connected to pressure reducing valve 3; reversing valve 5 is respectively connected to pressure reducing valve 3 and oil return pipe; hydraulic oil is pressed out by the pump station of hydraulic station 1 After passing through the stacked filter 2, the hydraulic oil is finely filtered, and then the pressure oil of the hydraulic system is reduced to the suitable oil pressure of the lubrication system by the pressure reducing valve 3, and then the oil is delivered to the pressurized quantitative oil injection through the reversing valve 5 Distributor 7: The pressurized quantitative oiling distributor 7 supplies an appropriate amount of lubricating oil to the friction pair of the machine tool.

The valve group can be fixed at any position, and there is a group of valves in the valve group to realize the centralized lubrication function, as shown in Figure 3 and Figure 4, the superimposed filter 2 is fixed on the valve block 8, and the pressure reducing valve 3 is superimposed and installed on the superimposed On the filter 2, a pressure gauge 4 is externally connected to the pressure reducing valve 3, and the reversing valve 5 is superimposed on the pressure reducing valve 3, and a pressure relay 6 is assembled on the valve block 8.

As shown in Figure 2, a proper amount of lubricating oil is used for the lubrication of the guide rail screw by the pressurized quantitative oil distributor 7.

The pressure switch 6 monitors the lubricating oil in the pipeline system for pressure loss and cut-off, and the control system of the main engine controls the operation of the lubricating system.

In the present invention, the operation of the reversing valve 5 is used to replace the start and stop of the lubricating pump in the traditional centralized lubricating mode, and has an unloading function.

All parts in this embodiment can adopt commercially available products.

Working principle of the present invention is:

The hydraulic oil is extruded from the pump station and flows through the stacked filter. The hydraulic oil is finely filtered for the lubrication of the guide rail screw. The pressure reducing valve reduces the pressure oil of the hydraulic system to the suitable oil pressure of the lubrication system. By controlling the reversing valve The frequency and time of lubricating oil supply are controlled by the number of actions and the action cycle. When the reversing valve is reset, it plays the role of unloading the lubrication system to ensure that the pressurized quantitative distributor can complete an action cycle. The pressure relay monitors the lubricating oil in the tube. The flow conditions in the road system, and finally, the pressurized quantitative oil distributor supplies an appropriate amount of lubricating oil to the friction pair of the machine tool.

Claims (5)

1. A centralized lubrication system for a hydraulic station, characterized in that it includes a hydraulic station (1), a superimposed filter (2), a pressure reducing valve (3), a pressure gauge (4), a reversing valve (5), a pressure Relay (6), pressurized quantitative oiling distributor (7), pipelines and joints; pressure gauge (4) is connected with pressure reducing valve (3); reversing valve (5) is connected with pressure reducing valve (3) and pressure reducing valve (3) respectively The oil return pipe is connected; the hydraulic oil is pressed out from the pump station of the hydraulic station (1) and flows through the stacked filter (2), the hydraulic oil is finely filtered, and then the pressure oil of the hydraulic system is reduced to lubricating oil by the pressure reducing valve (3). The oil pressure of the system is suitable, and then the oil is delivered to the pressurized quantitative oiling distributor (7) through the reversing valve (5); the appropriate amount of lubricating oil is supplied to the machine tool by the pressurized quantitative oiling distributor (7). in the friction pair. 2. The centralized lubrication system of the hydraulic station according to claim 1, characterized in that: the stacked filter (2) is fixed on the valve block (8), and the pressure reducing valve (3) is stacked and installed on the stacked filter (2 ), a pressure gauge (4) is externally connected to the pressure reducing valve (3), the reversing valve (5) is superimposed on the pressure reducing valve (3), and a pressure relay (6) is assembled on the valve block (8). 3. The centralized lubricating system of the hydraulic station according to claim 1, characterized in that an appropriate amount of lubricating oil is used for lubricating the lead screw of the guide rail by the pressurized quantitative oiling distributor (7). 4. The centralized lubrication system of the hydraulic station according to claim 1, characterized in that: the pressure relay (6) monitors the loss of pressure and flow of the lubricating oil in the pipeline system, and the control system of the main engine controls the operation of the lubrication system. 5. The centralized lubrication system of the hydraulic station according to claim 1, characterized in that: the operation of the reversing valve (5) replaces the start and stop of the lubrication pump in the traditional centralized lubrication method to control the frequency and time of lubricating oil supply , and has unloading function.