An oil supply system for an aluminum strip oiler

Abstract

The present application relates to a kind of aluminum strip oiler oil supply system, including oil tank, first filter core, second filter core, multiple three-way valves, multiple metering pumps, circulating pump, oil return tank and control unit, the outlet of oil tank is connected with the inlet of first three-way valve, the first outlet of first three-way valve is connected with the first inlet of second three-way valve, the second outlet of first three-way valve is connected with the second inlet of second three-way valve by first filter core, the outlet of second three-way valve is connected with the inlet of third three-way valve by second filter core, the second outlet of third three-way valve is connected with the inlet of oil tank by circulating pump, the first outlet of third three-way valve is divided into two ways, respectively by first, second metering pump is connected with the upper and lower tool beam oil supply port of oiler, the oil return port of oiler is connected with the inlet of oil return tank by third metering pump;When each filter core reaches the set service life, the corresponding filter core replacement prompt information is sent by control unit.The system is high in degree of automation, can improve the service life of filter core under the premise of guaranteeing the quality of oiling.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum strip production, and in particular to an oil supply system for an aluminum strip oiler. Background Art

[0002] During the production of aluminum strip, both the upper and lower surfaces of the strip need to be oiled using a surface treatment line oiler. In the oiler's oil supply system, the process oil must be filtered through a filter element before being delivered to the oiler body for spraying. If the process oil in the tank contains a large amount of impurities, it must be circulated off-line. However, existing oil supply systems have a low level of automation. Operators typically rely on production experience and regularly replace filter elements. This is not only time-consuming and labor-intensive, impacting production efficiency, but also requires regular replacement of filter elements before the end of their service life to ensure oiling quality, resulting in wasteful filter elements. Summary of the Invention

[0003] The object of the present invention is to provide an oil supply system for an aluminum strip oiling machine, which has a high degree of automation and can increase the service life of a filter element while ensuring the oiling quality.

[0004] To achieve the above object, the present invention adopts a technical solution: an oil supply system for an aluminum strip oiler, comprising an oil tank, a first filter element, a second filter element, multiple three-way valves, multiple metering pumps, a circulating pump, an oil return tank, and a control unit, wherein the oil tank outlet is connected to the inlet of the first three-way valve, the first outlet of the first three-way valve is connected to the first inlet of the second three-way valve, the second outlet of the first three-way valve is connected to the second inlet of the second three-way valve via the first filter element, the outlet of the second three-way valve is connected to the inlet of the third three-way valve via the second filter element, the second outlet of the third three-way valve is connected to the oil tank inlet via the circulating pump, the first outlet of the third three-way valve is divided into two paths, one path is connected to the oil supply port of the upper blade beam of the oiler via the first metering pump, and the other path is connected to the oil supply port of the lower blade beam of the oiler via the second metering pump, and the oil return port of the oiler is connected to the oil tank inlet via the third metering pump; the control unit is electrically connected to the control terminals of the oiler, the circulating pump, each metering pump, and each three-way valve respectively; and the control unit issues a corresponding filter element replacement prompt when each filter element reaches a set service life.

[0005] Furthermore, the control unit controls the system to switch between an oiling working mode and an oil circulation purification working mode.

[0006] Furthermore, when the control unit controls the system to switch to the oiling working mode, it controls the first three-way valve to switch to the first outlet, controls the second three-way valve to switch to the first inlet, controls the third three-way valve to switch to the first outlet, controls each metering pump to start, and controls the oil flow of each metering pump.

[0007] Further, the control unit controls the system to switch to the oil circulation purification working mode, controls the first three-way valve to switch to the second outlet, controls the second three-way valve to switch to the second inlet, and controls the third three-way valve to switch to the second outlet.

[0008] Further, the oil return tank outlet is connected to the oil tank inlet through an oil return pump; and the control unit is electrically connected to a control end of the oil return pump.

[0009] Further, the control unit calculates the cumulative oil amount in the oil return tank according to the oil passing amount data of the third metering pump after the oiling work ends; controls the oil return pump to start when the cumulative oil amount in the oil return tank exceeds a set oil amount threshold; controls the system to switch to the oil circulation purification working mode after a set oil return time elapses; and controls the system to switch back to the oiling working mode after a set circulation time elapses.

[0010] Further, the method for the control unit to determine whether the first filter element reaches the working life is:

[0011] The control unit calculates the cumulative time during which the system works in the oil circulation purification working mode, and issues a prompt information that the first filter element needs to be replaced when the cumulative time reaches a set maximum cumulative circulation time.

[0012] Further, the method for the control unit to determine whether the second filter element reaches the working life is:

[0013] The control unit calculates the cumulative time during which the system works in the oil circulation purification working mode, and calculates the cumulative oil supply amounts of the first metering pump and the second metering pump according to the oil supply amount data of the first metering pump and the second metering pump.

[0014] Then, the current working state of the second filter element is calculated as:

[0015]

[0016] wherein, L total is the current working life of the second filter element, t is the cumulative time during which the system works in the oil circulation purification working mode, T is the set maximum cumulative circulation time, q1 and q2 are the cumulative oil supply amounts of the first metering pump and the second metering pump respectively, and Q is the set maximum cumulative oil supply amount.

[0017] The factors affecting the working life of the second filter element are normalized and combined through the above calculation, and then it is determined whether the current working state L of the second filter element reaches the set working life. If yes, a prompt information that the second filter element needs to be replaced is issued.

[0018] Further, the control unit controls the oil supply amounts of the first metering pump and the second metering pump according to the oil amount required by the oiler.

[0019] The oil supply of the metering pump = unit oil amount * strip width * unit production speed.

[0020] Compared with the existing technology, the present invention has the following advantages: It provides an oil supply system for an aluminum strip oiler that can automatically control oiling and oil circulation purification operations, eliminating the need for manual operation by an operator. More importantly, the system can accurately calculate and determine whether the filter element has reached the end of its service life, and when the filter element reaches the end of its service life, it will prompt a replacement filter element. This can extend the service life of the filter element, avoid filter element waste, and reduce production and operating costs while ensuring the purity of the process oil, that is, the oiling quality. Therefore, the present invention has strong practicality and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the system structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] like Figure 1As shown, this embodiment provides an oil supply system for an aluminum strip oiling machine, comprising an oil tank 1, a first filter element 2, a second filter element 3, three three-way valves 4-6, three metering pumps 7-9, a circulating pump 10, an oil return tank 11, an oil return pump 12 and a control unit 13, wherein the outlet of the oil tank 1 is connected to the inlet of the first three-way valve 4, the first outlet of the first three-way valve 4 is connected to the first inlet of the second three-way valve 5, the second outlet of the first three-way valve 4 is connected to the second inlet of the second three-way valve 5 via the first filter element 2, the outlet of the second three-way valve 5 is connected to the inlet of the third three-way valve 6 via the second filter element 3, the second outlet of the third three-way valve 6 is connected to the inlet of the oil tank 1 via the circulating pump 10, and the third three-way valve 6 is divided into two routes, one route is connected to the oil supply port of the upper knife beam 15 of the oiler 14 through the first metering pump 7, and the other route is connected to the oil supply port of the lower knife beam 16 of the oiler 14 through the second metering pump 8, so as to oil the upper and lower surfaces of the aluminum strip 17 through the oiler; the return oil port of the oiler 14 is connected to the inlet of the return oil tank 11 through the third metering pump 9; the outlet of the return oil tank 11 is connected to the inlet of the oil tank 1 through the return oil pump 12; the control unit 13 is electrically connected to the control end of the oiler 14, the circulating pump 10, the return oil pump 12, each metering pump 7-9, and each three-way valve 4-6 respectively; the control unit 13 sends a corresponding filter element replacement prompt message when each filter element reaches the set working life.

[0026] The control unit 1 controls the system to switch between an oiling operation mode and an oil circulation purification operation mode.

[0027] When the control unit 1 controls the system to switch to the oiling working mode, it controls the first three-way valve 4 to switch to the first outlet, controls the second three-way valve 5 to switch to the first inlet, controls the third three-way valve 6 to switch to the first outlet, controls the start-up of each metering pump 7-9, and controls the oil flow rate of each metering pump. At this time, the process oil from the oil tank 1 passes through the first three-way valve 4 and the second three-way valve 5, is filtered by the second filter element 3, and is supplied to the first metering pump 7 and the second metering pump 8 through the third three-way valve 6. The first metering pump 7 and the second metering pump 8 respectively pump the oil to the upper blade beam 15 and the lower blade beam 16 in the oiling machine 14. After high-voltage ionization, the oil is attached to the aluminum strip 17. The remaining process oil flows to the bottom of the oiling machine and is pumped back to the return oil tank 11 through the metering pump 9.

[0028] When the control unit 1 switches the control system to the oil circulation and purification mode, it switches the first three-way valve 4 to the second outlet, the second three-way valve 5 to the second inlet, and the third three-way valve 6 to the second outlet. At this point, the process oil from the oil tank 1 passes through the first three-way valve 4 and enters the first filter element 2. After undergoing coarse filtration through the first filter element 2, it passes through the second three-way valve 5 and enters the second filter element 3 for further filtration. It then flows back to the oil tank 1 via the circulation pump 10. This constitutes an off-line circulation process, the purpose of which is to filter out any impurities that may be present in the process oil in the tank, thereby purifying the process oil.

[0029] The control unit controls the switching logic between the oiling working mode and the oil circulation purification working mode as follows: after the oiling work is completed, the control unit 1 calculates the cumulative oil volume in the return oil tank 11 based on the oil flow data of the third metering pump 9; when the cumulative oil volume in the return oil tank 11 exceeds the set oil volume threshold, the return oil pump 12 is controlled to start, and after the set oil return time, the control system switches to the oil circulation purification working mode; after the set circulation time, it switches back to the oiling working mode.

[0030] The control unit determines whether the first filter element has reached its service life by:

[0031] The control unit calculates the cumulative time that the system works in the oil circulation purification working mode, and when the cumulative time reaches the set maximum cumulative cycle time, it issues a prompt message that the first filter element needs to be replaced.

[0032] The control unit determines whether the second filter element has reached its service life by:

[0033] The control unit calculates the cumulative time that the system works in the oil circulation purification working mode; and at the same time calculates the cumulative oil supply of the first metering pump and the second metering pump based on the oil supply data of the first metering pump and the second metering pump;

[0034] Then, calculate the current working status of the second filter element:

[0035]

[0036] Among them, L total is the current working life of the second filter element, t is the cumulative time the system works in the oil circulation purification working mode, T is the set maximum cumulative cycle time, q1 and q2 are the cumulative oil supply of the first metering pump and the second metering pump respectively, and Q is the set maximum cumulative oil supply;

[0037] Through the above calculation, the factors affecting the service life of the second filter element are normalized and combined, and then it is determined whether the current working state L of the second filter element has reached the set service life. If so, a prompt message indicating that the second filter element needs to be replaced is issued.

[0038] The control unit controls the oil supply of the first metering pump and the second metering pump according to the oil amount required by the oiler;

[0039] The oil supply amount of the first metering pump or the second metering pump = unit oil amount * strip width * unit production speed.

[0040] The control unit is equipped with a display screen and a communication module. The control unit displays the system's current operating mode and the current operating status of each filter element on the display screen. When the first or second filter element reaches the end of its service life, the control unit visually displays a warning message on the display screen indicating that the corresponding filter element needs replacement. Simultaneously, the control unit transmits a filter replacement warning message to the mobile terminal of the relevant responsible person via the communication module to ensure that the relevant person receives the prompt information in a timely manner.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other manner. Any person skilled in the art may utilize the above-disclosed technical content to modify or modify the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention remain within the scope of protection of the present invention.

Claims

1. An oil supply system for an aluminum strip oiler, characterized in that: The filter element of the embodiment of the present invention is a kind of filter element of the present invention, and the filter element of the embodiment of the present invention is a kind of filter element of the present invention.

2. The oil supply system for an aluminum strip oiler according to claim 1, characterized in that: The control unit controls the system to switch between an oiling operation mode and an oil circulation purification operation mode.

3. The oil supply system for an aluminum strip oiler according to claim 2, characterized in that: When the control system switches to the oiling working mode, the control unit controls the first three-way valve to switch to the first outlet, controls the second three-way valve to switch to the first inlet, controls the third three-way valve to switch to the first outlet, controls each metering pump to start, and controls the oil flow rate of each metering pump.

4. The oil supply system for an aluminum strip oiler according to claim 2, characterized in that: When the control system switches to the oil circulation purification working mode, the control unit controls the first three-way valve to switch to the second outlet, controls the second three-way valve to switch to the second inlet, and controls the third three-way valve to switch to the second outlet.

5. The oil supply system for an aluminum strip oiler according to claim 1, characterized in that: The oil return tank outlet is connected to the oil tank inlet via an oil return pump; and the control unit is electrically connected to the control end of the oil return pump.

6. The oil supply system for an aluminum strip oiler according to claim 4, characterized in that: After the oiling work is completed, the control unit calculates the cumulative oil amount in the return oil tank based on the oil flow data of the third metering pump; when the cumulative oil amount in the return oil tank exceeds the set oil amount threshold, the control unit controls the return oil pump to start, and after the set oil return time, the control system switches to the oil circulation purification working mode; after the set circulation time, it switches back to the oiling working mode.

7. The oil supply system for an aluminum strip oiler according to claim 1, characterized in that: The control unit determines whether the first filter element has reached its service life by: The control unit calculates the cumulative time that the system works in the oil circulation purification working mode, and when the cumulative time reaches the set maximum cumulative cycle time, it issues a prompt message that the first filter element needs to be replaced.

8. The oil supply system for an aluminum strip oiler according to claim 1, characterized in that: The control unit determines whether the second filter element has reached its service life by: The control unit calculates the cumulative time that the system works in the oil circulation purification working mode; and at the same time calculates the cumulative oil supply of the first metering pump and the second metering pump based on the oil supply data of the first metering pump and the second metering pump; Then, calculate the current working status of the second filter element: Among them, L total is the current working life of the second filter element, t is the cumulative time the system works in the oil circulation purification working mode, T is the set maximum cumulative cycle time, q1 and q2 are the cumulative oil supply of the first metering pump and the second metering pump respectively, and Q is the set maximum cumulative oil supply; Through the above calculation, the factors affecting the service life of the second filter element are normalized and combined, and then it is determined whether the current working state L of the second filter element has reached the set service life. If so, a prompt message indicating that the second filter element needs to be replaced is issued.

9. The oil supply system for an aluminum strip oiler according to claim 8, characterized in that: The control unit controls the oil supply of the first metering pump and the second metering pump according to the oil amount required by the oiler; The oil supply of the metering pump = unit oil amount * strip width * unit production speed.

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