Automatic oil discharging device for oil collecting groove of rolling mill

Abstract

The utility model relates to an automatic oil discharge device for a rolling mill oil collecting groove, which comprises an oil discharge pump, an oil collecting groove, an oil-water separator and three sensing devices, the oil-water separator is connected with the oil collecting groove through a pipeline, the oil discharge pump is arranged on the pipeline, the first sensing device is arranged above the oil collecting groove, the second sensing device is arranged below the oil collecting groove, and a boss is arranged between the second sensing device and the bottom. The third induction device is arranged above the oil-water separator, safety accidents such as equipment failure or oil overflowing from a basement caused by too high oil level can be effectively avoided through the induction devices, the oil drain pump can be stopped in time to prevent idling damage when the oil level is too low, and the oil drain pump is started to prevent pollution and influence on equipment operation when the oil level is too high. According to the device, operators do not need to frequently check the oil level and manually operate the oil discharge pump, the labor amount of the operators is greatly reduced, and automation and intelligence of oil discharge are achieved.

Description

Technical Field

[0001] The utility model relates to an automatic oil discharging device for an oil collecting tank of a rolling mill. Background Art

[0002] The plate filter of the rolling mill filters the dirty oil generated in the rolling process through the plate filter to clean the rolling oil. During the filtering process, the rolling oil may leak. The leaked oil flows into the basement oil collecting tank through the oil drainage tank. The maximum capacity of the oil collecting tank is 1.5 tons.

[0003] Due to equipment problems, sometimes a large amount of oil leakage occurs. If it exceeds the capacity of the oil collecting tank, it will cause the problem that the basement floor is full of leaked oil. This situation is very dangerous. If the oil leakage is not dealt with in time, it may cause the decline of oil quality. Because there are various wires in the basement, there may also be a risk of fire. At present, the oil collecting tank can only be drained by manually opening the oil pump. During the oil drainage process, it is also necessary to observe the liquid level of the oil-water separator above the basement. If not observed, it will cause the problem of oil leakage. Therefore, two people are required to cooperate during the oil drainage process, which not only consumes manpower but also time. Therefore, it is necessary to develop a utility model of an automatic oil discharging device to solve this problem. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art, and provide an automatic oil discharging device for an oil collecting tank of a rolling mill, which realizes automatic oil discharging by setting multiple induction devices. The purpose of the utility model is achieved as follows:

[0005] An automatic oil discharging device for an oil collecting tank of a rolling mill includes an oil drainage pump, an oil collecting tank, an oil-water separator, a first induction device, a second induction device and a third induction device. The first induction device is arranged above the oil collecting tank, the second induction device is arranged below the oil collecting tank, and the third induction device is arranged above the oil-water separator. The oil-water separator and the oil collecting tank are connected by a pipeline, and an oil drainage pump is also arranged on the pipeline between the oil-water separator and the oil collecting tank; one end of the pipeline is connected to the upper side of the oil-water separator, and the other end of the pipeline is connected to the lower side of the oil collecting tank. There is a boss between the second induction device and the bottom of the oil collecting tank, and the first induction device is fixedly arranged at the opening of the oil collecting tank through a connecting rod.

[0006] Furthermore, the axis of the first induction device coincides with the axis of the oil collecting tank.

[0007] Furthermore, the axis of the second induction device coincides with the axis of the oil collecting tank.

[0008] Furthermore, the axis of the third induction device coincides with the axis of the oil-water separator.

[0009] Furthermore, the first sensing device, the second sensing device, and the third sensing device are all provided with corrosion-resistant shells, and the material of the corrosion-resistant shell is stainless steel or engineering plastics.

[0010] Furthermore, the second sensing device is a pressure sensor, and the first sensing device and the third sensing device are both liquid level sensors.

[0011] Beneficial effects: Through the setting of the sensing device, it can effectively prevent equipment failures caused by too high oil level or safety accidents of oil overflowing into the basement. When the oil level is too low, the sensing device can stop the oil drain pump in time to avoid damage caused by the pump running dry; when the oil level is too high, the sensing device can start the oil drain pump to prevent oil from overflowing and polluting the environment or affecting the operation of the equipment; operators do not need to frequently check the oil level and manually operate the oil drain pump, reducing the labor intensity of personnel. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of an automatic oil drain device for a rolling mill oil sump;

[0013] In the figure: 1, oil drain pump; 2, oil sump; 3, oil-water separator; 4, first sensing device; 5, second sensing device; 6, third sensing device; 7, pipeline; 8, boss; 9, connecting rod. Detailed Embodiment

[0014] In order to deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and drawings. This embodiment is only used to explain the present utility model and does not constitute a limitation to the protection scope of the present utility model.

[0015] In this embodiment:

[0016] Such as Figure 1As shown in the figure, an automatic oil drainage device for the oil collecting tank of a rolling mill includes an oil drainage pump 1, an oil collecting tank 2, an oil-water separator 3, a first induction device 4, a second induction device 5 and a third induction device 6. The first induction device 4 is arranged above the oil collecting tank 2, the second induction device 5 is arranged below the oil collecting tank 2, and the third induction device 6 is arranged above the oil-water separator 3. The oil-water separator 3 and the oil collecting tank 2 are connected by a pipeline 7, and an oil drainage pump 1 is also provided on the pipeline 7 between the oil-water separator 3 and the oil collecting tank 2; one end of the pipeline 7 is connected to the upper side of the oil-water separator 3, and the other end of the pipeline 7 is connected to the lower side of the oil collecting tank 2. There is a boss 8 between the second induction device 5 and the bottom of the oil collecting tank 2. The first induction device 4 is fixedly arranged at the opening of the oil collecting tank 2 through a connecting rod 9. The axis of the first induction device 4 coincides with the axis of the oil collecting tank 2, the axis of the second induction device 5 coincides with the axis of the oil collecting tank 2, and the axis of the third induction device 6 coincides with the axis of the oil-water separator 3. The first induction device 4, the second induction device 5 and the third induction device 6 are all provided with corrosion-resistant shells, and the material of the corrosion-resistant shells is stainless steel or engineering plastics. The second induction device 5 is a pressure sensor, and the first induction device 4 and the third induction device 6 are both liquid level sensors.

[0017] The first induction device 4 is used to start the oil drainage pump 1 when the liquid level of the oil in the oil collecting tank 2 reaches a preset height. The second induction device 5 is used to turn off the oil drainage pump 1 when the liquid level of the oil in the oil collecting tank 2 is lower than the preset height. The third induction device 6 is used to turn off the oil drainage pump 1 when the liquid level of the oil in the oil-water separator 3 reaches a preset height. Among them, the start line of the first induction device 4 is connected to the live wire of the oil drainage pump 1 and the start line of the second induction device 5. The start line of the second induction device 5 is connected to the start line of the third induction device 6. The start line of the third induction device 6 is connected to the live wire of the power supply. The neutral wire of the oil drainage pump 1 is connected to the neutral wire of the power supply; among them, the first induction device 4 is used to start the oil drainage pump 1 and keep working for 1 hour when contacting the oil. The second induction device 5 is used to turn off the oil drainage pump 1 and keep working for 1 hour when contacting the oil. The third induction device 6 is used to start the oil drainage pump 1 when contacting the oil.

[0018] The start and stop of the oil drain pump 1 are controlled by the first induction device 4, the second induction device 5, and the third induction device 6. The automatic discharge of the oil in the oil sump 2 can be completed automatically according to the liquid level of the oil. Usually, during the production process in the rolling mill workshop, a certain amount of lubricating oil needs to be applied to the rolling rolls to reduce friction during rolling. When the rolling mill operator finds that there is no lubricating oil on the rolling rolls during rolling, lubricating oil needs to be added, and the waste oil from adding the lubricating oil flows into the oil sump 2. The liquid level of the waste oil collected in the oil sump 2 will gradually rise. When the liquid level of the oil in the oil sump 2 reaches the preset height, the first induction device 4 starts the oil drain pump 1. The oil drain pump 1 discharges the oil in the oil sump 2 into the oil-water separator 3. When the liquid level of the oil in the oil-water separator 3 reaches the preset height, the third induction device 6 stops the oil drain pump 1. When the liquid level of the oil in the oil sump 2 is lower than the preset height, that is, when the oil is drained out, the second induction device 5 stops the oil drain pump 1; to ensure that the oil in the oil sump 2 can be completely emptied and prevent the phenomenon of oil overflow in the oil sump 2, the first induction device 4 is arranged above the oil sump 2, and the first induction device 4 is provided above the oil sump 2. The live wire of the oil drain pump 1 is connected to the start wire of the first induction device 4. When the liquid level of the oil in the oil sump 2 reaches the preset height, the first induction device 4 can start the oil drain pump 1; when the liquid level of the oil in the oil-water separator 3 reaches the preset height, the third induction device 6 stops the oil drain pump 1; when the liquid level of the oil in the oil sump 2 is lower than the preset height, the second induction device 5 stops the oil drain pump 1.

[0019] When the oil in the oil sump 2 continues to be discharged into the oil-water separator 3, the liquid level of the oil in the oil-water separator 3 will gradually rise. When the liquid level of the oil in the oil-water separator 3 reaches the preset height, the third induction device 6 starts the oil drain pump 1 again. When the liquid level of the oil in the oil sump 2 reaches the preset height, the first induction device 4 starts the oil drain pump 1 again. The live wire of the oil drain pump 1 is connected to the start wire of the first induction device 4. The live wire of the oil drain pump 1 is also connected to the start wire of the second induction device 5. The neutral wire of the oil drain pump 1 is connected to the neutral wire of the power supply.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An automatic oil discharge device for a rolling mill oil collecting tank, characterized in that: It includes an oil drain pump, an oil collecting tank, an oil-water separator, a first sensing device, a second sensing device and a third sensing device. The first sensing device is arranged above the oil collecting tank, the second sensing device is arranged below the oil collecting tank, and the third sensing device is arranged above the oil-water separator. The oil-water separator and the oil collecting tank are connected by a pipeline, and an oil drain pump is also arranged on the pipeline between the oil-water separator and the oil collecting tank; one end of the pipeline is connected to the upper side of the oil-water separator, and the other end of the pipeline is connected to the lower side of the oil collecting tank. A boss is arranged between the second sensing device and the bottom of the oil collecting tank, and the first sensing device is fixed at the opening of the oil collecting tank by a connecting rod.

2. The automatic oil draining device for the oil collecting tank of a rolling mill according to claim 1, characterized in that , the axis center of the first sensing device coincides with the axis center of the oil collecting tank.

3. The automatic oil discharge device for the oil collecting tank of a rolling mill according to claim 1, characterized in that: The axis center of the second sensing device coincides with the axis center of the oil collecting tank.

4. The automatic oil discharge device for the oil collecting tank of a rolling mill according to claim 1, characterized in that: The axis of the third sensing device coincides with that of the oil-water separator.

5. The automatic oil discharge device for the oil collecting tank of a rolling mill according to claim 1, characterized in that: The first sensing device, the second sensing device and the third sensing device are all provided with a corrosion-resistant shell, and the material of the corrosion-resistant shell is stainless steel or engineering plastic.

6. The automatic oil draining device for the oil collecting tank of a rolling mill according to claim 1, characterized in that: The second sensing device is a pressure sensor, and the first sensing device and the third sensing device are both liquid level sensors.

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