Lubricating distribution mechanism

Abstract

The utility model relates to the technical field of metal cold rolling, and discloses a lubrication distribution mechanism which comprises a machine cover. The main pipe is fixed on the hood; the at least six nozzles are all mounted on the main pipe, each nozzle is communicated with the main pipe, and a flow regulating valve is mounted on each nozzle; the dirty oil tank is used for storing the cooled cold rolling oil; the oil cleaning tank is used for storing the filtered cold rolling oil; the filtering module is used for filtering the cold rolling oil, and the filtering module is communicated with the clean oil tank through a return pipe. According to the scheme of the utility model, the lift of the injection pump is increased and the flow is flexibly controlled, so that the rolling mill can process raw materials with different thicknesses from thick materials to ultra-thin strips, the production range is greatly expanded, and the universality and the flexibility of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cold rolling, in particular to a lubrication distribution mechanism. Background Art

[0002] At present, twenty-high mills are increasingly used in the cold rolling production of stainless steel and silicon steel. During the production process, a large rolling force is used to thin the cold-rolled raw materials. In the process of thinning the raw materials, a large amount of heat is generated. The cold-rolled raw materials and rolls need to be cooled so that the mill can carry out continuous rolling. At the same time, when the mill is rolling thicker raw materials and thinner raw materials, the required flow rates are different due to different heating values. In order to obtain better plate shape and tolerance of the rolled finished product, it is necessary to control the flow rate sprayed to the strip surface and the rolls. Especially when rolling extremely thin strips, the cooling flow control requirements are higher. When a large pressure is sprayed to an extremely thin strip such as hand-torn steel, the plate shape of the strip is seriously affected.

[0003] In the process of rolling finished strip steel, plate quality control is of vital importance. At the same time, there are significant differences in the flow requirements for process lubrication for raw materials of different thicknesses. Especially when rolling high-quality, high-demand steels such as hand-torn steel, the flow control of process lubrication is more stringent. Although the existing flow control valve has an adjustment function, its adjustment range is relatively small, which makes it difficult to meet the diverse needs of the rolling mill when processing raw materials of different thicknesses. Especially in the two extreme cases of rolling thick materials and ultra-thin strips, the limitations of the flow control valve are more obvious. Thick material rolling requires a larger lubrication flow to ensure the stability of the rolling process and the plate quality of the strip, while ultra-thin strip rolling requires a smaller flow to avoid quality problems caused by over-lubrication. Due to the limited adjustment range, the rolling mill may not be able to achieve the best lubrication effect in both extreme cases.

[0004] Therefore, it is necessary to design a lubrication distribution mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a lubrication distribution mechanism.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A lubrication distribution mechanism, comprising:

[0008] hood;

[0009] a main pipe fixed to the hood;

[0010] at least six nozzles, all mounted on the main pipe, each of the nozzles being connected to the main pipe, and each of the nozzles being mounted with a flow regulating valve;

[0011] Dirty oil tank, used to store cooled cold rolling oil;

[0012] Clean oil tank, used to store filtered cold rolling oil;

[0013] A filter module, used for filtering cold rolling oil, wherein the filter module is connected to the clean oil tank through a return pipe;

[0014] a jet pump, the input end of which is connected to the clean oil tank, and the output end of which is connected to the main pipe;

[0015] A lift pump has an input end connected to the dirty oil tank and an output end connected to the filter module.

[0016] As a preferred technical solution of the present invention, the plurality of nozzles are distributed in a linear array along the length direction of the main pipe.

[0017] As a preferred technical solution of the present invention, the motor on the jet pump is a servo motor.

[0018] As a preferred technical solution of the present invention, an encoder is installed on the servo motor of the jet pump.

[0019] The utility model has the following beneficial effects:

[0020] 1. Improve the quality of rolled strip shape: Through precise flow and pressure control, this solution can significantly improve the shape of rolled strip, reduce shape defects, and improve the overall quality and consistency of the product.

[0021] 2. Expanding the production range: The jet pump lift increase and flexible flow control in the solution enable the rolling mill to process raw materials of different thicknesses, from thick materials to very thin strips, greatly expanding the production range and improving the versatility and flexibility of the equipment.

[0022] 3. Improve production efficiency: Precise flow and pressure control helps reduce failures and downtime during the rolling process, thereby improving production efficiency. At the same time, stable lubrication and cooling effects also help extend the service life of rolls and strips.

[0023] 4. Energy saving and consumption reduction: The use of servo motors can adjust the speed and power output according to actual needs. Compared with traditional constant speed motors, it can significantly reduce energy consumption and reduce operating costs.

[0024] 5. Improved automation: By integrating intelligent devices such as sensors, control valves, and servo controllers, this solution improves the automation level of the rolling mill process lubrication system and reduces the complexity and error rate of manual operations.

[0025] 6. Optimize process parameters: Real-time feedback of flow and pressure data provides operators with accurate process parameter information, which helps to optimize the rolling process and improve product quality and production efficiency.

[0026] 7. Enhance system stability: Accurate flow and pressure control and zoning control strategies help enhance the stability of process lubrication systems and reduce equipment failures and downtime caused by poor lubrication or over-lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the principle of a lubrication distribution mechanism proposed in the utility model;

[0028] Figure 2 It is a structural diagram of the hood, main pipe, nozzle and flow control valve.

[0029] In the figure: 1 engine cover, 2 main pipe, 3 nozzle, 4 flow control valve, 5 dirty oil tank, 6 clean oil tank, 7 filter module, 8 injection pump, 9 lift pump. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-2 A lubrication distribution mechanism includes a hood 1; a main pipe 2, fixed on the hood 1; at least six nozzles 3, all installed on the main pipe 2, each nozzle 3 is connected to the main pipe 2, each nozzle 3 is installed with a flow regulating valve 4, and several nozzles 3 are distributed in a linear array along the length direction of the main pipe 2; a dirty oil tank 5, used to store cooled cold rolling oil; a clean oil tank 6, used to store filtered cold rolling oil; a filter module 7, used to filter the cold rolling oil, and the filter module 7 is connected to the clean oil tank 6 through a return pipe; a jet pump 8, the input end of which is connected to the clean oil tank 6, and the output end is connected to the main pipe 2, the motor on the jet pump 8 is a servo motor, and an encoder is installed on the servo motor of the jet pump 8; a lift pump 9, the input end of which is connected to the dirty oil tank 5, and the output end of which is connected to the filter module 7.

[0032] The specific working principle of this utility model is as follows:

[0033] The solution works by upgrading the jet pump motor in the mill's process lubrication system from a traditional constant-speed motor to a servo motor. This, combined with a series of sensors and regulating valves, enables more precise and flexible flow and pressure control, significantly improving the shape of the rolled strip and enhancing product quality.

[0034] Specifically, during the operation of the rolling mill, the process lubrication system is responsible for providing the necessary cooling and lubrication for the strip and rolls. The dirty oil tank 5 collects the rolling oil after the mill has cooled, and then transports it to the filter module 7 for cleaning through the lift pump 9. The filtered clean oil is transported back to the clean oil tank 6 and then sprayed by the jet pump 8 through the nozzle 3 onto the strip and rolls of the rolling mill to complete the cooling and lubrication tasks.

[0035] To improve the accuracy of flow and pressure control, the solution replaces the motor of the jet pump 8 with a servo motor and equips it with a rotary encoder and a pressure sensor. The servo motor can adjust its speed as needed, while the rotary encoder detects the motor's running speed in real time to ensure accurate operation of the motor. At the same time, the pressure sensor monitors the output pressure of the jet pump 8 in real time and feeds the signal back to the servo controller.

[0036] When the rolling mill starts running, the operator sets a desired pump outlet pressure according to production requirements. When the pump is running, the feedback value of the pressure sensor at its outlet is sent to the servo controller and a PID operation is performed with the set value. Based on the operation result, the servo controller adjusts the speed of the servo motor to keep the pump output pressure stable at the set value.

[0037] In addition, to improve the rolled plate shape and provide higher flow control accuracy, the pipeline from the outlet of the jet pump 8 to the rolling mill is divided into multiple zones (six zones in this example). Each zone is equipped with a flow control valve 4 and a flow sensor. The operator can set the flow rate of each zone as needed. The flow control valve 4 is precisely adjusted according to the set flow value and the feedback value of the flow sensor on the corresponding pipeline to ensure that the flow rate at the outlet of each zone is stable at the set value.

[0038] In order to meet the needs of the rolling mill to produce both thicker raw materials and roll ultra-thin strips, the solution also increases the lift of the jet pump (from 80 meters to 110 meters). When rolling thick materials, the pressure setting value at the pump outlet is larger, so that the pressure reaching the rolling mill nozzle 3 is higher, and thus the flow through the nozzle 3 is larger; when rolling ultra-thin strips, the pressure setting value at the jet pump 8 outlet is smaller, so that the pressure reaching the rolling mill nozzle 3 is lower, and thus the flow through the nozzle 3 is smaller. This flexible flow and pressure control enables the rolling mill to adapt to raw materials of different thicknesses and meet the rolling needs of various strips.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lubrication distribution mechanism, characterized in that: include: hood (1); A main pipe (2) fixed to the hood (1); At least six nozzles (3), all mounted on the main pipe (2), each of the nozzles (3) being connected to the main pipe (2), and each of the nozzles (3) being mounted with a flow regulating valve (4); a dirty oil tank (5) for storing cooled cold rolling oil; A clean oil tank (6) for storing filtered cold rolling oil; A filter module (7) for filtering cold rolling oil, wherein the filter module (7) is connected to the clean oil tank (6) via a return pipe; A jet pump (8), the input end of which is connected to the clean oil tank (6), and the output end of which is connected to the main pipe (2); A lift pump (9) has an input end connected to the dirty oil tank (5) and an output end connected to the filter module (7).

2. A lubrication distribution mechanism according to claim 1, characterized in that: The plurality of nozzles (3) are distributed in a linear array along the length direction of the main pipe (2).

3. A lubrication distribution mechanism according to claim 1, characterized in that: The motor on the injection pump (8) is a servo motor.

4. A lubrication distribution mechanism according to claim 3, characterized in that: An encoder is installed on the servo motor of the injection pump (8).

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