Centralized oil supply system for mining equipment

Abstract

The utility model discloses a centralized oil supply system for mining equipment, which comprises a plurality of oil injection points on the mining equipment and an oil storage tank connected with the oil injection points through a main oil injection pipe, and lubricating grease in the oil storage tank enters the main oil injection pipe through a high-pressure oil pump and is conveyed into an oil distributor. The oil distributor conveys lubricating grease into all the oil distribution tanks through all the oil injection branch pipes, oil injection assemblies capable of injecting the lubricating grease to oil injection points of corresponding mining equipment are arranged in the corresponding oil distribution tanks, and spiral heating pipes are wound around the oil injection main pipe and the corresponding oil injection branch pipes to heat the lubricating grease so as to increase the fluidity of the lubricating grease and prevent blockage. The oil injection branch pipe is provided with an accurate oil supply system. The oil injection main pipe and the oil injection branch pipe are heated, the fluidity of heated lubricating grease can be enhanced, and therefore the situation that the temperature is reduced in winter, and an oil pipe is blocked is avoided; the oil injection branch pipes are regulated and controlled through the precise oil supply system, it can be guaranteed that all oil injection points achieve automatic oil injection in a timed and quantitative mode, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of mining equipment, in particular to a centralized oil supply system for mining equipment. Background Art

[0002] Coal mines use a lot of large machines in the mechanized mining process. These machines need to be lubricated regularly during long-term operation. Due to factors such as the coal mine space environment, the oiling process brings many troubles. Many machines fail due to untimely lubrication.

[0003] Traditional manual lubrication methods can no longer meet actual needs. The power units of coal mine electromechanical equipment must be lubricated and maintained on a regular basis. The equipment has multiple complex processes and requires manpower to complete, which increases corresponding safety risks. Secondly, the equipment cannot guarantee the amount of oil injected.

[0004] At the same time, due to the low temperature in the north in winter, when the temperature is too low, the viscosity of the grease will increase and the fluidity will deteriorate, and the oil pipes will often be blocked, which is very cumbersome to handle. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a centralized oil supply system for mining equipment.

[0006] The utility model is realized through the following technical solutions:

[0007] A centralized oil supply system for mining equipment includes multiple oil filling points on the mining equipment and oil storage tanks connected thereto via an oil filling main pipe. The grease in the oil storage tank is pumped into the oil filling main pipe by a high-pressure oil pump and transported to the oil distributor. The oil distributor transports the grease to each oil distribution tank via each oil filling branch pipe. An oil filling assembly for adding grease to the oil filling point of the corresponding mining equipment is provided in the corresponding oil distribution tank. Spiral heating tubes are wound around the oil filling main pipe and the corresponding oil filling branch pipe to heat the grease to increase its fluidity and prevent blockage. The oil filling branch pipe is provided with a precise oil supply system.

[0008] Further optionally, the oil filling assembly includes an end cover fixed to the top of the oil distribution tank by bolts, a drive motor is connected and fixed to the upper part of the end cover, a screw is synchronously driven and connected to the output shaft of the drive motor, the screw passes through the end cover and extends to the interior of the oil distribution tank and is rotationally connected to its bottom, and a push plate is provided inside the oil distribution tank that is threadedly connected to the screw.

[0009] Further optionally, the precise oil supply system includes a PLC controller, which is electrically connected to a control valve, a pressure sensor, and a flow meter installed in sequence on the corresponding oil filling branch pipe, the PLC controller is electrically connected to the drive motor, and the PLC controller is electrically connected to the liquid level sensor.

[0010] Further optionally, a filter box is provided between the oil storage tank and the high-pressure oil pump.

[0011] Further optionally, a liquid level sensor is installed on the oil storage tank.

[0012] Further optionally, a limit shaft is supported and fixed between the oil distribution tank and the end cover, the push plate is slidably connected to the limit shaft, and a sealing ring is provided between the push plate and the oil distribution tank.

[0013] Further optionally, the oil return port of the oil distributor is connected to an oil return pipe and communicates with the oil storage tank, and control valves are installed on both the oil return pipe and the oil filling main pipe.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: by heating the oil filling main pipe and branch pipe, the fluidity of the heated grease will be enhanced, thereby preventing the blockage of the oil pipe caused by the lower temperature in winter; the oil filling branch pipe is regulated by a precise oil supply system, which can ensure that each oil filling point can achieve automatic refueling at a fixed time and quantity, reducing the intensity of manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model system;

[0016] Figure 2 It is a schematic diagram of the prior art of this utility;

[0017] In the figure: oil storage tank 1, high-pressure oil pump 2, oil filling main pipe 3, oil distributor 4, oil distribution tank 5, oil filling point 6, filter box 7, pressure sensor 8, flow meter 9, oil return valve 10, liquid level sensor 11, control valve 12, oil filling branch pipe 13, spiral heating tube 14, PLC controller 15, end cover 51, drive motor 52, push plate 53, screw 54, limit shaft 55, oil inlet 56, oil outlet 57. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] like Figure 1 As shown, a centralized oil supply system for mining equipment includes multiple oil filling points 6 on the mining equipment and an oil storage tank 1 connected thereto through an oil filling main pipe 3, and is characterized in that the grease in the oil storage tank 1 enters the oil filling main pipe 3 through a high-pressure oil pump 2 and is transported to the oil separator 4, and the oil separator 4 transports the grease to each oil distribution tank 5 through each oil filling branch pipe 13, and an oil filling assembly that can add grease to the oil filling point 6 of the corresponding mining equipment is provided in the corresponding oil distribution tank 5, and a spiral heating tube 14 is wound around the oil filling main pipe 3 and the corresponding oil filling branch pipe 13 to heat the grease to increase its fluidity and prevent blockage, and the oil filling branch pipe 13 is provided with a precise oil supply system.

[0020] like Figure 2 As shown, the oil filling assembly includes an end cover 51 fixed to the top of the oil distribution tank 5 by bolts, and a drive motor 52 is connected and fixed to the upper part of the end cover 51. A screw 54 is synchronously driven and connected to the output shaft of the drive motor 52. The screw 54 extends through the end cover 51 to the inside of the oil distribution tank 5 and is rotatably connected to the bottom of the oil distribution tank 5. A push plate 53 threadedly connected to the screw 54 is provided inside the oil distribution tank 5. The drive motor 52 adopts a variable frequency motor for adjusting the flow rate, pressure and grease output of the grease.

[0021] like Figure 1 As shown, the precise oil supply system includes a PLC controller 15, which is electrically connected to the control valve 12, the pressure sensor 8, and the flow meter 9 installed in sequence on the corresponding oil filling branch pipe 13, the PLC controller 15 is electrically connected to the drive motor 52, and the PLC controller 15 is electrically connected to the liquid level sensor 11.

[0022] like Figure 1 As shown, a filter box 7 is provided between the oil storage tank 1 and the high-pressure oil pump 2 .

[0023] like Figure 1 As shown, a liquid level sensor 11 is installed on the oil storage tank 1.

[0024] like Figure 2 As shown, a limit shaft 55 is supported and fixed between the oil distribution tank 5 and the end cover 51, and the push plate 53 is slidably connected to the limit shaft 55. A sealing ring is provided between the push plate 53 and the oil distribution tank 5 to prevent the grease from being squeezed to the upper part of the push plate 53.

[0025] like Figure 1 As shown, the oil return port of the oil distributor 4 is connected to an oil return pipe and communicates with the oil storage tank 1 , and control valves are installed on both the oil return pipe and the oil filling main 3 .

[0026] The implementation principle of a centralized oil supply system for mining equipment in the embodiment of the present application is as follows:

[0027] When the oil filling point 6 of the corresponding mining equipment needs to be oiled, the PLC controller 15 sends a signal to open the control valve 12 on the oil filling main pipe 3 and the corresponding oil filling branch pipe 13. After opening, the high-pressure oil pump 2 is started. The high-pressure oil pump 2 will filter the grease in the oil storage tank 1 through the filter box 7, and then inject the grease into the oil distributor 4 through the oil filling main pipe 3. The grease enters the oil distributor 4 and is distributed to the oil distribution tank 5 through each oil filling branch pipe 13. After being transported to each oil distribution tank 5, it is ready to start oiling;

[0028] When oil filling starts, the PLC controller 15 closes the control valve 12 on the corresponding oil filling branch pipe 13 to prevent the grease from flowing back. At the same time, the PLC controller 15 sends a signal to start the drive motor 52 to rotate the output shaft. The rotation of the output shaft drives the lead screw 54 to rotate synchronously. When the lead screw 54 rotates, it drives the push plate 53 to move downward. When the push plate 53 moves downward, it pushes the grease, so that the grease is injected into the corresponding oil filling point 6 of the mining equipment.

[0029] At the same time, the pressure sensor 8 and the flow meter 9 can monitor the pressure and flow in the oil filling branch pipe in real time, and the liquid level sensor 11 can monitor the liquid level in the oil storage tank 1. The PLC controller 15 controls the opening and closing of the control valve 12 and the operation of the drive motor 52 based on these monitoring data, thereby achieving accurate oil supply;

[0030] When the temperature is low, the spiral heating tube 14 wound around the oil injection main pipe 3 and the oil injection branch pipe 13 is powered, and the grease in the oil injection main pipe 3 and the oil injection branch pipe 13 is heated, thereby increasing its fluidity and preventing blockage.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A centralized oil supply system for mining equipment, comprising a plurality of oil filling points (6) on the mining equipment and an oil storage tank (1) connected thereto via an oil filling main (3), characterized in that: The lubricating grease in the oil storage tank (1) is fed into the oil filling main pipe (3) through the high-pressure oil pump (2) and transported to the oil distributor (4). The oil distributor (4) transports the lubricating grease to the respective oil distribution tanks (5) through the respective oil filling branch pipes (13). The oil distribution tanks (5) are provided with oil filling components capable of filling the lubricating grease into the oil filling points (6) of the corresponding mining equipment. The oil filling main pipe (3) and the corresponding oil filling branch pipe (13) are both wound with spiral heating pipes (14) to heat the lubricating grease so as to increase its fluidity and prevent clogging. The oil filling branch pipe (13) is provided with a precise oil supply system.

2. A centralized oil supply system for mining equipment according to claim 1, characterized in that: The oil injection assembly comprises an end cover (51) fixed to the top of the oil distribution tank (5) by bolts, a driving motor (52) is connected and fixed to the upper part of the end cover (51), a lead screw (54) is synchronously driven and connected to the output shaft of the driving motor (52), the lead screw (54) passes through the end cover (51) and extends to the inside of the oil distribution tank (5) and is rotatably connected to the bottom thereof, and a push plate (53) is provided inside the oil distribution tank (5) and is threadedly connected to the lead screw (54).

3. The centralized oil supply system for mining equipment according to claim 1, characterized in that: The precise oil supply system comprises a PLC controller (15), wherein the PLC controller (15) is electrically connected to a control valve (12), a pressure sensor (8), and a flow meter (9) which are sequentially installed on a corresponding oil injection branch pipe (13), the PLC controller (15) is electrically connected to a drive motor (52), and the PLC controller (15) is electrically connected to a liquid level sensor (11).

4. The centralized oil supply system for mining equipment according to claim 1, characterized in that: A filter box (7) is provided between the oil storage tank (1) and the high-pressure oil pump (2).

5. A centralized oil supply system for mining equipment according to claim 4, characterized in that: A liquid level sensor (11) is installed on the oil storage tank (1).

6. A centralized oil supply system for mining equipment according to claim 2, characterized in that: A limiting shaft (55) is supported and fixed between the oil distribution tank (5) and the end cover (51), the push plate (53) is slidably connected to the limiting shaft (55), and a sealing ring is provided between the push plate (53) and the oil distribution tank (5).

7. The centralized oil supply system for mining equipment according to claim 1, characterized in that: The oil return port of the oil distributor (4) is connected to an oil return pipe and communicates with the oil storage tank (1). Control valves are installed on both the oil return pipe and the oil injection main pipe (3).

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