Rapid oil return system for high-position oil return tank of flatting machine

Abstract

The utility model discloses a quick oil return system for a high-position oil return tank of a flatting machine, which comprises a high-position oil tank and a hydraulic station oil tank, the hydraulic station oil tank is connected with a plurality of flatting machines, the high-position oil tank is used for storing hydraulic oil, the quick oil return system further comprises an oil return pump, and the input end of the oil return pump is communicated with an outlet of the high-position oil tank through an oil conveying pipe. The output end of the oil return pump is communicated with an inlet of the hydraulic station oil tank through an oil conveying pipe, and the hydraulic station oil tank is communicated with the high-position oil tank through an oil return pipe assembly. The oil return pump is additionally arranged on the high-level oil tank at the top of the flatting machine, the liquid level meter is additionally arranged on the oil tank, the liquid level meter and the oil return pump are matched in an electric control mode, the oil return speed is automatically increased, the normal liquid level of the oil tank of the flatting machine hydraulic station can be guaranteed, normal production of the flatting machine is guaranteed, the production rhythm is improved, oil consumption can be saved, and the production efficiency is improved. And the product quality is guaranteed, the field production requirement is met, and the speed of thick plate contract tail sweeping is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oil return for a flattening machine, in particular to a quick oil return system for a high-position oil return tank of a flattening machine. Background Art

[0002] The flattening machine is a crucial piece of equipment used to address the problem of buckling during thick plate rolling. The high-level oil tank atop the flattening machine was originally designed to return oil by its own weight. When a large number of plates were being flattened, the oil in the high-level tank wouldn't have enough time to return to the hydraulic station tank. The hydraulic station tank's oil level would fall below the trip pump level, preventing the flattening machine from properly pressing plates. Furthermore, when the hydraulic station tank's oil level was filled to the high level, the high-level oil tank atop the flattening machine would overflow (because its volume was smaller than the hydraulic station tank), wasting significant fuel and affecting plate quality. This issue severely impacted the flattening machine's normal production, the handling of buckled plates, and the finalization of steel plate contracts.

[0003] Therefore, it is necessary to develop a fast oil return system for the high-position oil return tank of the flattening machine. Utility Model Content

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide a rapid oil return system for a high-position oil return tank of a flattening machine, so as to solve the technical problems raised in the background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A rapid oil return system for a high-position oil return tank of a flattening machine includes a high-position oil tank and a hydraulic station oil tank. The hydraulic station oil tank is connected to a plurality of flattening machines, and the high-position oil tank is used to store hydraulic oil. The high-position oil tank also includes an oil return pump. The input end of the oil return pump is connected to the outlet of the high-position oil tank via an oil delivery pipe. The output end of the oil return pump is connected to the inlet of the hydraulic station oil tank via an oil delivery pipe. The hydraulic station oil tank and the high-position oil tank are connected via an oil return pipe assembly.

[0007] The return oil pipe assembly hydraulic station oil tank includes a heat dissipation pipe and a drainage pipe. The two ends of the heat dissipation pipe are respectively connected to a section of drainage pipe. The end of one section of the drainage pipe away from the heat dissipation pipe is connected to the outlet of the hydraulic station oil tank, and the end of the other section of the drainage pipe away from the heat dissipation pipe is connected to the inlet of the high-level oil tank.

[0008] Preferably, the heat dissipation pipes and drainage pipes are both made of solid heat-conducting metal materials, and the heat dissipation pipes are arranged in a serpentine shape.

[0009] Preferably, heat exchange fins are sleeved on the outer side of the heat dissipation pipe.

[0010] Preferably, an air cooler is installed on the outer wall of the high-position oil tank, and the air outlet of the air cooler is facing the heat dissipation pipe.

[0011] Preferably, a temperature sensor is installed on the high-level oil tank at its inlet position for sensing the temperature of the hydraulic oil flowing back from the hydraulic station tank to the high-level oil tank.

[0012] Preferably, a liquid level gauge is installed on the high-level oil tank for sensing the hydraulic oil level in the high-level oil tank.

[0013] The oil return system also includes a controller, the input and output ends of the controller are electrically connected to an A / D converter and a D / A converter respectively, the liquid level meter and temperature sensor are both electrically connected to the A / D converter, and the oil return pump and air cooler are both electrically connected to the D / A converter.

[0014] Preferably, a tee is connected to the oil pipe at the output end of the return oil pump, one output port of the tee is connected to the hydraulic station oil tank, the other output port of the tee is connected to the oil change pipe, and a control valve is provided in the tee for controlling the flow direction of the hydraulic oil in the tee.

[0015] The utility model has the following beneficial effects:

[0016] By adding an oil return pump to the high-position oil tank on top of the flattening machine and installing a liquid level gauge on the oil tank, the liquid level gauge and the oil return pump are electronically controlled to automatically increase the oil return speed. This can not only ensure the normal oil level in the oil tank of the flattening machine hydraulic station, ensure the normal production of the flattening machine and improve the production rhythm, but also save fuel consumption, ensure product quality, meet on-site production needs, and increase the speed of thick plate contract clearance;

[0017] By adding an oil return pipe assembly to the high-position oil tank on top of the flattening machine, the flow time of the hydraulic oil outside the high-position oil tank is extended, so that it can be fully cooled. The serpentine heat dissipation pipe can store more hydraulic oil. The temperature sensor and the air cooler are electronically controlled to achieve automatic cooling of the hydraulic oil, ensure the safety of the flattening machine hydraulic station, and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the rapid oil return system for the high-position oil return tank of the flattening machine provided by the utility model;

[0019] Figure 2 This is a front view of the quick oil return system for the high-position oil return tank of the flattening machine provided by the utility model;

[0020] Figure 3 This is a side view of the quick oil return system for the high-position oil return tank of the flattening machine provided by the utility model;

[0021] Figure 4 This is a control flow chart of the rapid oil return system for the high-position oil return tank of the flattening machine provided by the utility model.

[0022] Among them are:

[0023] High-level oil tank-1; hydraulic station oil tank-2; oil return pump-3; oil return pipe assembly-4; air cooler-5; temperature sensor-6; liquid level gauge-7; controller-8; tee-9; control valve-10;

[0024] Heat dissipation pipe-41; drainage pipe-42. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0026] In the description of the present invention, it should be understood that the terms "left side," "right side," "upper," "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Terms such as "first" and "second" do not indicate the importance of a component and therefore should not be construed as limiting the present invention. The specific dimensions used in this embodiment are merely for illustrative purposes and do not limit the scope of protection of the present invention.

[0027] like Figure 1-4 As shown, a rapid oil return system for a high-position oil return tank of a flattening machine includes a high-position oil tank 1 and a hydraulic station oil tank 2. The hydraulic station oil tank 2 is connected to multiple flattening machines, and the high-position oil tank 1 is used to store hydraulic oil. It also includes an oil return pump 3, and the model of the oil return pump 3 is set to WCB75. The input end of the oil return pump 3 is connected to the outlet of the high-position oil tank 1 through an oil pipeline, and the output end of the oil return pump 3 is connected to the inlet of the hydraulic station oil tank 2 through an oil pipeline. The hydraulic station oil tank 2 and the high-position oil tank 1 are connected through an oil return pipe assembly 4.

[0028] The return oil pipe assembly 4 hydraulic station oil tank 2 includes a heat dissipation pipe 41 and a drainage pipe 42. The two ends of the heat dissipation pipe 41 are respectively connected to a section of the drainage pipe 42. One section of the drainage pipe 42 is connected to the outlet of the hydraulic station oil tank 2 at the end away from the heat dissipation pipe 41, and the other section of the drainage pipe 42 is connected to the inlet of the high-level oil tank 1 at the end away from the heat dissipation pipe 41.

[0029] Specifically, the heat dissipation pipe 41 and the drainage pipe 42 are both made of solid heat-conducting metal material, and the heat dissipation pipe 41 is arranged in a serpentine shape, which prolongs the flow time of the hydraulic oil outside the high-level oil tank 1 so that it can be fully cooled, and the serpentine heat dissipation pipe 41 can store more hydraulic oil.

[0030] Specifically, the heat exchange fins are sleeved on the outer side of the heat dissipation pipe 41 to facilitate efficient heat dissipation of the hydraulic oil.

[0031] Specifically, an air cooler 5 is installed on the outer wall of the high-position oil tank 1 , and the air outlet of the air cooler 5 is directed toward the heat dissipation pipe 41 .

[0032] In order to improve the intelligence of this system, a temperature sensor 6 is installed on the high-level oil tank 1 and at its inlet position, which is used to sense the temperature of the hydraulic oil flowing back from the hydraulic station tank 2 to the high-level oil tank 1; a liquid level gauge 7 is installed on the high-level oil tank 1, which is used to sense the hydraulic oil level in the high-level oil tank 1; the return oil system also includes a controller 8, the input and output ends of the controller 8 are electrically connected to an A / D converter and a D / A converter respectively, the liquid level gauge 7 and the temperature sensor 6 are both electrically connected to the A / D converter, and the return oil pump 3 and the air cooler 5 are both electrically connected to the D / A converter.

[0033] Specifically, a tee pipe 9 is connected to the oil delivery pipe at the output end of the return oil pump 3. One output port of the tee pipe 9 is connected to the hydraulic station oil tank 2, and the other output port of the tee pipe 9 is connected to the oil change pipe. A control valve 10 is provided in the tee pipe 9 to control the flow direction of the hydraulic oil in the tee pipe 9. In the working state, the hydraulic oil in the tee pipe 9 is directed to the hydraulic station oil tank 2 for hydraulic drive by adjusting the control valve 10. During oil change maintenance, the hydraulic oil in the tee pipe 9 is directed to the oil change pipe by adjusting the control valve 10 to discharge the hydraulic oil.

[0034] When the device is in use, the hydraulic oil in the high-level oil tank 1 on the top of the flattening machine sinks to the bottom of the tank, and the upper and lower limits of the liquid level and the upper and lower limits of the temperature are set by the controller 8; the liquid level gauge 7 senses the hydraulic oil level in the high-level oil tank 1, and when the hydraulic oil reaches the upper limit, the return oil pump 3 is controlled to start and pump the hydraulic oil into the hydraulic station oil tank 2 until the liquid level reaches the lower limit, so that the flattening machine can press the plate normally; when returning the oil, the hydraulic cylinder of the flattening machine retracts, and the hydraulic oil in the oil chamber flows back to the high-level oil tank 1 from the outlet of the hydraulic station oil tank 2 through the return oil pipe assembly 4, and the temperature is reduced in this process, and when the temperature sensor 6 senses that the temperature is at the upper limit, the air cooler 5 is started to blow air to cool it down until the temperature reaches the lower limit.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A rapid oil return system for a high-position oil return tank of a flattening machine, comprising a high-position oil tank (1) and a hydraulic station oil tank (2), wherein a plurality of flattening machines are connected to the hydraulic station oil tank (2), and the high-position oil tank (1) is used to store hydraulic oil, characterized in that: It also includes an oil return pump (3), wherein the input end of the oil return pump (3) is connected to the outlet of the high-position oil tank (1) via an oil delivery pipe, the output end of the oil return pump (3) is connected to the inlet of the hydraulic station oil tank (2) via an oil delivery pipe, and the hydraulic station oil tank (2) is connected to the high-position oil tank (1) via an oil return pipe assembly (4); The oil return pipe assembly (4) of the hydraulic station oil tank (2) comprises a heat dissipation pipe (41) and a drainage pipe (42), wherein both ends of the heat dissipation pipe (41) are integrally connected to a section of the drainage pipe (42), wherein the end of one section of the drainage pipe (42) away from the heat dissipation pipe (41) is connected to the outlet of the hydraulic station oil tank (2), and the end of the other section of the drainage pipe (42) away from the heat dissipation pipe (41) is connected to the inlet of the high-level oil tank (1).

2. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 1, characterized in that: The heat dissipation pipe (41) and the drainage pipe (42) are both made of solid heat-conducting metal material, and the heat dissipation pipe (41) is arranged in a serpentine shape.

3. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 1, characterized in that: The heat exchange fins are sleeved on the outer side of the heat dissipation tube (41).

4. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 1, characterized in that: An air cooler (5) is installed on the outer wall of the high-position oil tank (1), and the air outlet of the air cooler (5) faces the direction of the heat dissipation pipe (41).

5. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 4, characterized in that: A temperature sensor (6) is installed on the high-level oil tank (1) at its inlet position, and is used to sense the temperature of the hydraulic oil flowing back from the hydraulic station oil tank (2) to the high-level oil tank (1).

6. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 5, characterized in that: A liquid level gauge (7) is installed on the high-level oil tank (1) for sensing the hydraulic oil level in the high-level oil tank (1).

7. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 6, characterized in that: The system further comprises a controller (8), wherein the input end and the output end of the controller (8) are electrically connected to an A / D converter and a D / A converter respectively, the liquid level meter (7) and the temperature sensor (6) are both electrically connected to the A / D converter, and the oil return pump (3) and the air cooler (5) are both electrically connected to the D / A converter.

8. The rapid oil return system for a high-position oil return tank of a flattening machine according to claim 1, characterized in that: A tee pipe (9) is connected to the oil delivery pipe at the output end of the oil return pump (3), one output port of the tee pipe (9) is connected to the hydraulic station oil tank (2), and the other output port of the tee pipe (9) is connected to the oil exchange pipe. A control valve (10) is provided in the tee pipe (9) for controlling the flow direction of the hydraulic oil in the tee pipe (9).

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