Large-span dispersion point roller way lubricating system

Abstract

The utility model discloses a large span dispersion point roller way lubrication system, including oil supply master station and a plurality of oil gas substations, the oil supply master station includes oil tank, gear pump, motor and pressure relay, the output shaft of motor is connected with the input shaft of gear pump, the oil inlet of gear pump is connected with oil tank through oil inlet pipe, and the oil gas substations are connected with the oil tank through oil inlet pipe. The oil outlet is connected with the oil inlet end of each oil-gas substation through a pressure oil pipeline, the pressure relay is installed on the pressure oil pipeline, the output end of the pressure relay is connected with a controller of the motor, the gas inlet end of each oil-gas substation is connected with a factory gas source, and the oil-gas output end is connected with a bearing seat of a continuous casting machine roller bed system through an oil-gas conveying pipe. Pressure oil is provided by the oil supply main station, lubricating oil gas is provided for the roller bed system after oil-gas mixing is carried out by the oil-gas substations, the oil-gas conveying distance is greatly shortened, the air pressure path loss is reduced, the lubricating effect of the continuous casting machine roller bed system can be effectively improved, and normal operation of a continuous casting machine is guaranteed.

Description

Technical Field

[0001] The utility model relates to an oil-gas lubrication system for a large-span, dispersed-point roller table suitable for a continuous casting machine, belonging to the technical field of lubrication. Background Art

[0002] The roller system is a critical component of the continuous casting machine's back-end billet discharge system. The roller system includes pre-cutting rollers, post-cutting rollers, conveyor rollers, and billet discharge rollers. Originally, these rollers all utilized grease lubrication, which relies on pressure to reverse the oil supply. If even one node leaked, the system pressure wouldn't increase, paralyzing the entire system. In a grease lubrication system, the lubricant in the pipelines gradually hardens, increasing conveying resistance. Only by increasing the system pressure could the lubricant be delivered to the bearing housing, increasing the risk of leaks and making it difficult to reliably supply oil to the hundreds of lubrication points in the pre-cutting rollers, post-cutting rollers, conveyor rollers, and billet discharge rollers. The pre-cutting rollers, post-cutting rollers, conveyor rollers, and unloading rollers span the casting span, cutting span, first unloading span, and second unloading span. The lubrication point closest to the straightening machine is 340 meters away from the last lubrication point on the unloading rollers. Due to this long conveying distance, using a single lubrication station would result in significant oil pressure loss, and lubrication points far from the lubrication station would not be able to fully oil them. This would easily cause bearings to lock, making conveying the billets difficult and causing scratches on the billets. Therefore, it is very necessary to design an oil-air lubrication system for the long-span, dispersed rollers of the continuous casting machine. Utility Model Content

[0003] The purpose of the utility model is to provide a large-span dispersed-point roller table lubrication system to address the shortcomings of the existing technology, so as to improve the lubrication effect of the continuous casting machine roller table system and ensure the normal operation of the continuous casting machine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A large-span dispersed-point roller lubrication system includes an oil supply main station and multiple oil and gas substations. The oil supply main station includes an oil tank, a gear pump, a motor and a pressure relay. The output shaft of the motor is connected to the input shaft of the gear pump. The oil inlet of the gear pump is connected to the oil tank through an oil inlet pipe, and the oil outlet is connected to the oil inlet end of each oil and gas substation through a pressure oil pipeline. The pressure relay is installed on the pressure oil pipeline, and the signal output end of the pressure relay is connected to the controller of the motor. The air inlet end of each oil and gas substation is connected to the factory air source, and the oil and gas output end of the oil and gas substation is connected to the bearing seat of the continuous casting machine roller system through an oil and gas transmission pipe.

[0006] In the above-mentioned large-span dispersed-point roller conveyor lubrication system, an overflow valve is installed at the oil outlet of the gear pump.

[0007] In the above-mentioned large-span dispersed-point roller conveyor lubrication system, an accumulator is installed on the pressure oil pipeline.

[0008] In the above-mentioned large-span dispersed-point roller table lubrication system, an oil suction filter is installed on the oil inlet pipe of the gear pump.

[0009] In the above-mentioned large-span dispersed-point roller table lubrication system, a high-pressure filter and an oil pressure gauge are installed on the pressure oil pipeline.

[0010] The above-mentioned large-span dispersed-point roller conveyor lubrication system, the oil suction filter, gear pump, overflow valve and motor constitute the oil supply system, and two sets of the oil supply system are provided, and the two sets of oil supply systems are connected between the pressure oil pipeline and the oil tank.

[0011] In the above-mentioned large-span dispersed-point roller conveyor lubrication system, the oil supply main station also includes an unloading valve, one end of which is connected to the pressure oil pipeline, and the other end is connected to the oil tank.

[0012] The above-mentioned large-span dispersed-point roller lubrication system, the oil and gas substation includes an electric oil valve, an electric air valve, a progressive distributor and a mixer. The oil inlet of the progressive distributor is connected to the pressure oil pipeline of the oil supply main station through an electric oil valve, and the multiple oil outlets of the progressive distributor are respectively connected to the multiple oil inlets of the mixer; the air inlet of the mixer is connected to the factory air source through an electric air valve, and the multiple oil and gas outlets of the mixer are connected to the bearing seat of the continuous casting machine roller system through an oil and gas transmission pipe.

[0013] In the above-mentioned large-span dispersed-point roller conveyor lubrication system, the air inlet of the mixer is equipped with a pneumatic pressure reducing valve and an air pressure gauge.

[0014] In the above-mentioned large-span dispersed-point roller lubrication system, an air intake valve and a filter are installed between the electric air valve and the factory air source; a substation filter and an oil intake valve are installed between the electric oil valve and the pressure oil pipeline of the oil supply main station.

[0015] The utility model adopts the method that the oil supply main station provides pressure oil, the oil and gas substation mixes the oil and gas and then provides lubricating oil and gas to the roller system of the continuous casting machine, which greatly shortens the oil and gas transmission distance and reduces the air pressure path loss. The system can effectively improve the lubrication effect of the roller system of the continuous casting machine and ensure the normal operation of the continuous casting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a structural diagram of the oil and gas substation.

[0019] The numbers in the figure are as follows: 1. Oil tank, 2. Oil suction filter, 3. Unloading valve, 4. Gear pump, 5. Overflow valve, 6. High-pressure filter, 7. Accumulator, 8. Pressure relay, 9. Oil pressure gauge, 10. Motor, 11. Oil and gas substation, 12. Unloading roller, 13. Conveyor roller, 14. Post-cutting roller, 15. Pre-cutting roller, 16. Oil inlet valve, 17. Substation filter, 18. Air inlet valve, 19. Electric oil valve, 20. Filter, 21. Electric air valve, 22. Pneumatic reducing valve, 23. Air pressure gauge, 24. Progressive distributor, 25. Mixer, 26. Factory air source. DETAILED DESCRIPTION

[0020] The utility model aims to solve the problems existing in the prior art and provides a large-span, dispersed-point roller table oil-gas lubrication system which has the advantages of stable and continuous oil supply, low leakage, and large span.

[0021] See Figure 1 The utility model mainly includes a main oil supply station and multiple oil and gas sub-stations 11. The main oil supply station includes a fuel tank 1, an oil suction filter 2, an unloading valve 3, a gear pump 4, a relief valve 5, a high-pressure filter 6, an accumulator 7, a pressure relay 8, an oil pressure gauge 9, a motor 10, and a distribution box (not shown in the figure). The output shaft of the motor 10 is connected to the input shaft of the gear pump 4, and the oil inlet of the gear pump 4 is connected to the fuel tank 1 through an oil inlet pipe. The oil suction filter 2 is installed on the oil inlet pipe of the gear pump 4, and the oil outlet of the gear pump 4 is connected to each oil and gas sub-station 11 through a pressure oil pipeline. The high-pressure filter 6, accumulator 7, pressure relay 8, and oil pressure gauge 9 are all installed on the pressure oil pipeline. One end of the unloading valve 3 is connected to the pressure oil pipeline, and the other end is connected to the fuel tank 1. The oil inlet of the relief valve 5 is connected to the oil outlet of the gear pump 4, and the oil outlet is connected to the fuel tank 1. The oil suction filter 2, gear pump 4, relief valve 5, and motor 10 form the oil supply system. Two sets of oil supply systems are provided: one for normal use and the other for backup. The signal output of pressure relay 8 is connected to the controller of motor 10, which controls the start and stop of motor 10 based on the oil pressure in the pressure oil pipeline.

[0022] The roller system of the continuous casting machine includes a pre-cutting roller composed of a pre-cutting roller 15, a post-cutting roller composed of a post-cutting roller 14, a conveying roller composed of a conveying roller 13, and a discharging roller composed of a discharging roller 12. Each roller is lubricated by oil and gas provided by one or two oil and gas substations 11.

[0023] See Figure 2Each oil and gas substation 11 has the same structure, including an oil inlet valve 16, a substation filter 17, an air inlet valve 18, an electric oil valve 19, a filter 20, an electric air valve 21, a pneumatic pressure reducing valve 22, a pressure gauge 23, a progressive distributor 24, and a mixer 25. One end of the oil inlet valve 16 is connected to the pressure oil pipeline of the main oil supply station, and the other end is connected to the oil inlet of the progressive distributor 24 through the substation filter 17 and the electric oil valve 19. The multiple oil outlets of the progressive distributor 24 are respectively connected to the multiple oil inlets of the mixer 25. One end of the air inlet valve 18 is connected to the factory air source 26, and the other end is connected to the air inlet of the mixer 25 through the filter 20, the electric air valve 21, the pneumatic pressure reducing valve 22, and the pressure gauge 23. The multiple oil and gas outlets of the mixer 25 are connected to the bearing seat of the continuous casting machine roller system through oil and gas transmission pipes. The filter 20 is used to filter the compressed gas provided by the factory gas source 26, the air inlet valve 18 and the electric air valve 21 are used to control the on-off of the air circuit, and the pneumatic pressure reducing valve 22 is used to reduce the pressure of the compressed gas.

[0024] This utility model uses a main oil supply station to provide pressurized lubricating oil to an oil and gas substation in real time. The oil and gas substation mixes the pressurized lubricating oil provided by the main oil supply station with compressed gas from a dedicated pipeline in the workshop to form an oil-gas mixture. The mixture is then further distributed by a primary distributor and a secondary distributor. The oil and gas are then directly transported to the roller bearing seat through a 6mm copper tube to lubricate and cool the bearings. The specific working process of this utility model is as follows:

[0025] First, start the oil supply system's motor 10 for normal operation. Motor 10 drives gear pump 4 to draw oil from oil tank 1 through oil suction filter 2. The pumped oil, after pressure adjustment by relief valve 5, enters the pressure oil pipeline. It then flows through oil pressure gauge 9, high-pressure filter 6, accumulator 7, and pressure relay 8 to supply lubricating oil to each oil and gas substation. When the pressure in the pressure oil pipeline exceeds the upper limit of 70 bar set by pressure breaker 8, motor 10 stops. If the pressure in the pressure oil pipeline falls below the lower limit of 50 bar set by pressure breaker 8, motor 10 starts again. Accumulator 7 stores pressurized lubricating oil to dissipate the pressure when motor 10 stops. The pressure in the pressure oil pipeline of the main oil supply station is always maintained above 50 bar but below 70 bar for use by each substation.

[0026] 2. The lubricating oil in the pressure oil pipeline enters the progressive distributor 24 through the oil inlet valve 16, the substation filter 17, and the electric oil valve 19. The progressive distributor 24 divides the lubricating oil into six equal parts and enters the mixer 25. The compressed air from the factory air source 26 flows through the air inlet valve 18, the filter 20, and the electric air valve 21 in sequence, and then enters the mixer 25 after being reduced in pressure by the pneumatic pressure reducing valve 22. It mixes with the lubricating oil in the mixer 25 to form oil and gas. The mixed oil and gas are further distributed by the first-level distributor and the second-level distributor, and are directly transported to the roller bearing seat by the oil and gas delivery pipe (6mm copper tube), which plays the role of lubricating and cooling the bearings.

[0027] Specifications and models of each component:

[0028] Oil suction filter 2: HH-GUF-80

[0029] Unloading valve 3: HH-CHB-100

[0030] Gear Pump 4: HH-CHB-1.7 Vertical Pump

[0031] Relief valve 5: HH-RV-G1 / 8

[0032] High pressure filter 6: HH-HPF-10

[0033] Accumulator 7: HH-ACC 0.75-350

[0034] Pressure relay 8: EDS346-2-250-000+ZBE06+ZBM300 (2 switches)

[0035] Oil pressure gauge 9: HH-PG-16

[0036] Motor 10: HE-CHB-0.55

[0037] Distribution Box: HE-ECB-K2

[0038] Pneumatic pressure reducing valve 22: HG-PRV-G1-10

[0039] Progressive dispenser 24: HH-DFP 6 / 6-10 / 6L: 4 / 4 / 4; R: 4 / 4 / 4;

[0040] Mixer 25: HM-OMB-G1-G1 / 2-50-6

[0041] Electric gas valve 21:HE-SSV-G1-16

[0042] Electric oil valve 19: HH-EV-24-G1 / 4

[0043] Substation filter 17: HH-C201.

[0044] The utility model uses the main oil supply station to supply oil, and the oil and gas are mixed by the oil and gas substation in the continuous casting workshop and then provided to the downstream, which well solves the oil supply and lubrication problem of the continuous casting machine roller.

[0045] The oil and gas substation uses the factory gas source (compressed gas in the workshop) as the power to continuously supply oil to the roller table, solving the problem that when the oil and gas are mixed from the main oil supply station, the lubricating oil cannot reach the lubrication point due to the large loss of air pressure along the way.

Claims

1. A large-span dispersed point roller conveyor lubrication system, characterized by: The invention comprises an oil supply main station and a plurality of oil and gas substations (11), wherein the oil supply main station comprises an oil tank (1), a gear pump (4), a motor (10) and a pressure relay (8), wherein the output shaft of the motor (10) is connected to the input shaft of the gear pump (4), the oil inlet of the gear pump (4) is connected to the oil tank (1) through an oil inlet pipe, and the oil outlet is connected to the oil inlet end of each oil and gas substation (11) through a pressure oil pipeline, the pressure relay (8) is installed on the pressure oil pipeline, the signal output end of the pressure relay (8) is connected to the controller of the motor (10), the air inlet end of each oil and gas substation (11) is connected to the factory air source (26), and the oil and gas output end of the oil and gas substation (11) is connected to the bearing seat of the roller system of the continuous casting machine through an oil and gas transmission pipe.

2. A large-span dispersed-point roller conveyor lubrication system according to claim 1, characterized in that: The oil outlet of the gear pump (4) is equipped with an overflow valve (5).

3. A large-span dispersed-point roller conveyor lubrication system according to claim 2, characterized in that: An accumulator (7) is installed on the pressure oil pipeline.

4. A large-span dispersed-point roller conveyor lubrication system according to claim 3, characterized in that: An oil suction filter (2) is installed on the oil inlet pipe of the gear pump (4).

5. A large-span dispersed-point roller conveyor lubrication system according to claim 4, characterized in that: A high-pressure filter (6) and an oil pressure gauge (9) are installed on the pressure oil pipeline.

6. A large-span dispersed-point roller conveyor lubrication system according to claim 5, characterized in that: The oil suction filter (2), the gear pump (4), the overflow valve (5) and the motor (10) constitute an oil supply system. Two sets of the oil supply system are provided, and the two sets of oil supply systems are connected in parallel between the pressure oil pipeline and the oil tank (1).

7. A large-span dispersed-point roller conveyor lubrication system according to claim 6, characterized in that: The oil supply main station further comprises an unloading valve (3), one end of the unloading valve (3) is connected to the pressure oil pipeline, and the other end is connected to the oil tank (1).

8. A large-span dispersed-point roller conveyor lubrication system according to any one of claims 1 to 7, characterized in that: The oil and gas substation (11) includes an electric oil valve (19), an electric air valve (21), a progressive distributor (24) and a mixer (25); the oil inlet of the progressive distributor (24) is connected to the pressure oil pipeline of the oil supply main station through the electric oil valve (19); the multiple oil outlets of the progressive distributor (24) are respectively connected to the multiple oil inlets of the mixer (25); the air inlet of the mixer (25) is connected to the factory air source (26) through the electric air valve (21); the multiple oil and gas outlets of the mixer (25) are connected to the bearing seat of the continuous casting machine roller system through the oil and gas transmission pipe.

9. A large-span dispersed-point roller conveyor lubrication system according to claim 8, characterized in that: The air inlet of the mixer (25) is equipped with a pneumatic pressure reducing valve (22) and a pressure gauge (23).

10. A large-span dispersed-point roller conveyor lubrication system according to claim 9, characterized in that: An air inlet valve (18) and a filter (20) are installed between the electric air valve (21) and the factory air source (26); a substation filter (17) and an oil inlet valve (16) are installed between the electric oil valve (19) and the pressure oil pipeline of the oil supply main station.

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