Lubricating device for roller shape of roller of profile rolling mill

Abstract

The utility model discloses a profile rolling mill roller shape lubricating device which comprises a system body, and the system body comprises a lubricating structure and an electrical control system. The lubricating structure comprises an air knife branch pipe, a mixed liquid branch pipe, a limiting block, an air knife and a nozzle, the air knife branch pipe and the upper portion of the mixed liquid branch pipe are installed in a limiting mode through the limiting block, the air knife branch pipe is located on the front side of the mixed liquid branch pipe, the air knife is connected with the outlet end of the air knife branch pipe, and the nozzle is connected with the outlet end of the mixed liquid branch pipe. When a profile rolling mill roll shape is lubricated, a water film on the surface of a roll can be broken, water can be blown off from the roll surface, mixed liquid sprayed out of the nozzle directly makes contact with the roll shape surface of the roll, it is ensured that the mixed liquid enters the contact face of the roll shape of the roll and an intermediate blank, lubrication is provided for the contact face of the roll shape of the roll and the intermediate blank more reliably, and the service life of the roll is prolonged. The purposes of reducing roller pass abrasion, prolonging the online service life of the roller, reducing the replacement frequency of the roller, improving the production efficiency and reducing the field production cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roll profile lubrication, in particular to a roll profile lubrication device for a section mill. Background Technique

[0002] During the production process of a section mill, relative motion or a tendency of relative motion occurs between the contact surfaces of the rolled piece and the roll, resulting in friction and causing wear on the surfaces of the roll and the rolled piece. In addition, the bottom and side surfaces of the roll pass of the section mill are in long-term contact with high-temperature billets and cooling water. At the same time, along with the cooling water and the falling oxidation particles entering the contact surface between the billet and the roll profile, abrasive wear, adhesive wear and chemical wear of the roll profile occur, and the roll pass wears rapidly, seriously affecting the service life of the roll.

[0003] In order to solve the problem of serious and uneven wear of the roll pass during the rolling process of section rolls, we have designed a roll profile lubrication device for a section mill to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and propose a roll profile lubrication device for a section mill.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A roll profile lubrication device for a section mill includes a system body, and the system body includes a lubrication structure and an electrical control system;

[0007] The lubrication structure includes an air knife branch pipe, a mixed liquid branch pipe, a limit block, an air knife and a nozzle. The upper parts of the air knife branch pipe and the mixed liquid branch pipe are installed in a limited way through the limit block. The air knife branch pipe is located in front of the mixed liquid branch pipe. The air knife is connected to the outlet end of the air knife branch pipe, and the nozzle is connected to the outlet end of the mixed liquid branch pipe. The lower parts of the air knife branch pipe and the mixed liquid branch pipe are adjustably installed with a water baffle;

[0008] The electrical control system includes a lubrication pump station, a main valve box and an electric control box. The main valve box is connected to the lubrication pump station through a pipeline, and the main valve box is connected to the electric control box through a wired circuit.

[0009] Preferably, the water baffle is located in front of the nozzle, and two nozzles are arranged on the mixed liquid branch pipe.

[0010] Preferably, the lubrication pump station is composed of an oil tank, an oil supply metering pump group and a water supply pump group, and the oil tank is connected in series with the oil supply metering pump group.

[0011] Preferably, the spray angle of the nozzle is 50°, and the air knife and the nozzle are respectively installed on the air knife branch pipe and the mixed liquid branch pipe in an up-and-down overlapping manner.

[0012] Preferably, the lubrication structure is distributed on both sides of the roll that needs to be sprayed.

[0013] Preferably, the water baffle is installed at the lower part of the air knife branch pipe and the mixed liquid branch pipe through an adjusting block, and an adjusting locking knob is installed on the adjusting block.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. A water baffle is added at the head of the nozzle to block the sprayed water falling from the upper part.

[0016] 2. An air knife is added above the nozzle to break the water film on the surface of the roll and blow the water off the roll surface, increasing the contact surface between the nozzle and the roll and the lubrication rate.

[0017] 3. The water baffle is arranged at the uppermost part to block the sprayed water. The air knife is located above the mixed liquid nozzle to break the water film on the surface of the roll profile. The mixed liquid nozzle is at the lowermost part, and the distribution layout of spraying the mixed liquid on the surface of the roll profile can more comprehensively provide lubrication for the contact surface between the roll pass and the bloom, achieving the purposes of reducing the wear of the roll pass, extending the on-line service life of the roll, reducing the number of roll replacements, improving production efficiency, and reducing on-site production costs. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a roll profile lubrication device for a section mill proposed by the present utility model;

[0019] Figure 2 It is a schematic spraying structure diagram of a roll profile lubrication device for a section mill proposed by the present utility model;

[0020] Figure 3 It is a schematic system structure diagram of a roll profile lubrication device for a section mill proposed by the present utility model.

[0021] In the figure: 1 lubrication structure, 2 lubrication pump station, 201 oil tank, 202 oil supply metering pump group, 203 water supply pump, 3 air knife branch pipe, 4 mixed liquid branch pipe, 5 limit block, 6 air knife, 7 nozzle, 8 main valve box, 9 water baffle. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Refer toFigures 1-3 , a lubrication device for the roll profile of a profile rolling mill, including a system body, which includes a lubrication structure 1 and an electrical control system. The lubrication structure 1 is distributively arranged on both sides of the roll that needs to be sprayed;

[0024] The lubrication structure 1 includes an air knife branch pipe 3, a mixed liquid branch pipe 4, a limit block 5, an air knife 6 and a nozzle 7. The upper parts of the air knife branch pipe 3 and the mixed liquid branch pipe 4 are limit-mounted through the limit block 5. The air knife branch pipe 3 is located in front of the mixed liquid branch pipe 4. The air knife 6 is connected to the outlet end of the air knife branch pipe 3, and the nozzle 7 is connected to the outlet end of the mixed liquid branch pipe 4. A water baffle 9 is adjustably installed at the lower parts of the air knife branch pipe 3 and the mixed liquid branch pipe 4; the water baffle 9 is installed at the lower parts of the air knife branch pipe 3 and the mixed liquid branch pipe 4 through an adjustment block, and an adjustment locking knob is installed on the adjustment block.

[0025] More specifically, the water baffle 9 is located in front of the nozzle 7. There are two nozzles arranged on the mixed liquid branch pipe 4. The spray angle of the nozzle 7 is 50°. The air knife 6 and the nozzle 7 are respectively installed on the air knife branch pipe 3 and the mixed liquid branch pipe 4 in an up-and-down overlapping manner.

[0026] In this embodiment, there is a large amount of sprayed water scouring the surface of the roll in the roll pass condition. In the design of the nozzle, the influence of the sprayed water on the lubrication effect should be fully considered.

[0027] The influence of the sprayed water on the lubrication effect: The sprayed water will form a water film on the surface of the roll. This water film will isolate the lubricating oil from the surface of the roll, resulting in the lubricating oil not being able to adhere to the surface of the roll; in addition, due to the continuous scouring of the roll surface by the sprayed water, most of the lubricating oil will be carried away by the sprayed water and cannot reach the surface of the roll.

[0028] To ensure that most of the oil-water mixture can reach the surface of the roll and can adhere to the surface of the roll, a unique design is carried out on the nozzle in this project.

[0029] (1) Adding a water baffle 9

[0030] To reduce the scouring of the oil-water mixture by the sprayed water, a water baffle 9 is added to the head of the nozzle 7 to block the sprayed water falling from the upper part.

[0031] (2) Adding an air knife 6

[0032] An air knife 6 is added above the nozzle 7 to break the water film on the surface of the roll and blow the water off the roll surface.

[0033] (3) The mixed liquid nozzle 7

[0034] The mixed liquid nozzle 7 is arranged below the air knife 6. After the water film on the air knife is broken and blown away, the mixed liquid nozzle 7 sprays the mixed liquid onto the surface of the roll. At this time, since the water film is broken and blown away, the mixed liquid directly contacts the roll surface, adheres to the roll surface and enters the contact part between the roll profile and the workpiece, achieving lubrication. The water baffle 9, the air knife 6, and the mixed liquid nozzle 7 are arranged with reference to the attached Figures 1-2 as shown.

[0035] Among them, for lubrication concentrated on the side of the roll pass, the spray angle of the nozzle 7 is selected as 50°. Due to limited space, the air knife 6 for compressed air and the mixed liquid nozzle 7 are installed in an up-and-down overlapping manner. According to the actual roll size, to ensure that the spray surface can cover the side surface of the pass at both the maximum roll diameter and the minimum roll diameter, the distance between the air knife 6 for compressed air, the mixed liquid nozzle 7 and the maximum roll diameter is determined. The nozzle 7 is arranged as Figure 2 shown; there are 2 nozzles on each mixed liquid branch pipe, which are used to spray the two sides of the roll profile.

[0036] The water baffle 9 and the air knife 6 are installed on the air knife branch pipe 3. There is 1 water baffle and 2 air knives installed on each air knife branch pipe 3, as shown in Figure 2 shown. The arrangement of the nozzle 7, the air knife 6 and the water baffle 9 is as Figure 2 shown.

[0037] It should be noted that for the selection of the air knife 6 and the nozzle 7: the Spraying Systems standard spray nozzle is adopted, model: H1 / 2U-SS5020; for the convenience of ordering spare parts, the air knife 6 and the nozzle 7 also select nozzles of the same model as the mixed liquid nozzle. The shape of the spray liquid of the selected nozzle is a flat fan-shaped spray.

[0038] Through the above scheme, in order to reduce the scouring of the spray water on the oil-water mixed liquid, a water baffle 9 is added to the head of the nozzle 7 to block the spray water falling from the upper part.

[0039] An air knife 6 is added above the nozzle, which is used to break the water film on the surface of the roll and blow the water off the roll surface.

[0040] The water baffle 9 is arranged at the topmost part to achieve the blocking of the spray water. The air knife 6 is located above the mixed liquid nozzle 7 to break the water film on the surface of the roll profile. The mixed liquid nozzle 7 is at the bottommost part, and the distribution layout of spraying the mixed liquid on the surface of the roll profile.

[0041] In this embodiment, it also includes an electrical control system, which includes a lubrication pump station 2, a main valve box 8 and an electrical control box. The main valve box 8 is connected by a pipeline to the lubrication pump station 2, and the main valve box 8 is connected to the electrical control box by a wired circuit.

[0042] More specifically, the lubrication pump station 2 is composed of an oil tank 201, an oil supply metering pump group 202, a water supply pump group 203, etc. The oil tank 201 is connected in series with the oil supply metering pump group 202.

[0043] Among them, the lubricating pump station: It consists of an oil tank, an oil supply metering pump group, a water supply pump group, etc. It is used to store lubricating oil, provide conveying power for lubricating oil and water, and control the conveying flow of lubricating oil.

[0044] The main valve box 8: Controls the opening and closing of the corresponding circuits of lubricating oil, water and compressed air, and realizes the lubrication of the corresponding roll pass.

[0045] The electric control box: Provides control signals for the internal components of the oil supply metering pump group 202, the water supply pump group 203, and the main valve box 8, and monitors the actual operating status of the corresponding components.

[0046] The working principle of the electrical control system:

[0047] The oil supply metering pump group 202 conveys lubricating oil to the oil-water mixer through a pipeline with a precisely controlled flow rate, and the water supply pump group 203 also conveys water with a certain pressure to the oil-water mixer through the corresponding pipeline. The lubricating oil and water are fully mixed in the oil-water mixer to form an oil-water mixture, which is transported to the required pipelines and spray beams through a solenoid valve, and is sprayed onto the surface of the roll pass through the nozzles 7 on the spray beam.

[0048] Test results:

[0049] When the lubrication system is not put into use: When the steel passing volume is 8,500 tons, the wear amount is 0.8 mm.

[0050] When the lubrication system is put into use: When the steel passing volume is 8,500 tons, the wear amount is 0.5 mm;

[0051] Conclusion:

[0052] The reduction amount of wear: 0.3 mm

[0053] Prolong the service life:

[0054]

[0055] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0056] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0057] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and without departing from the spirit and scope of the present utility model, various changes and improvements will occur to the present utility model, and all such changes and improvements fall within the scope of the present utility model claimed. The scope of the present utility model claimed is defined by the appended claims and their equivalents.

Claims

1. A roll lubrication device for a profile rolling mill, comprising a system body, characterized in that: The system body comprises a lubrication structure (1) and an electrical control system; The lubricating structure (1) comprises an air knife branch pipe (3), a mixed liquid branch pipe (4), a limit block (5), an air knife (6) and a nozzle (7); the air knife branch pipe (3) and the upper part of the mixed liquid branch pipe (4) are installed in a limit position by means of the limit block (5); the air knife branch pipe (3) is located at the front side of the mixed liquid branch pipe (4); the air knife (6) is connected to the outlet end of the air knife branch pipe (3); the nozzle (7) is connected to the outlet end of the mixed liquid branch pipe (4); and a water baffle (9) is installed at the lower part of the air knife branch pipe (3) and the mixed liquid branch pipe (4); The electrical control system comprises a lubrication pump station (2), a main valve box (8) and an electric control box, wherein the main valve box (8) is connected to the lubrication pump station (2) by a pipeline, and the main valve box (8) is connected to an air knife branch pipe (3) and a mixed liquid branch pipe (4) by a pipeline; and the main valve box (8) is connected to the electric control box by a wired circuit.

2. A profile rolling mill roll lubrication device according to claim 1, characterized in that: The water baffle (9) is located in front of the nozzle (7), and two nozzles are arranged on the mixed liquid branch pipe (4).

3. A profile rolling mill roll lubrication device according to claim 1, characterized in that: The lubrication pump station (2) is composed of an oil tank (201), an oil supply metering pump group (202), and a water supply pump group (203); the oil tank (201) and the oil supply metering pump group (202) are connected in series.

4. A profile rolling mill roll lubrication device according to claim 1, characterized in that: The spray angle of the nozzle (7) is 50°, and the air knife (6) and the nozzle (7) are respectively installed on the air knife branch pipe (3) and the mixed liquid branch pipe (4) in an upper and lower overlapping manner.

5. The roll lubrication device for a profile rolling mill according to claim 1, characterized in that: The lubrication structure (1) is distributed on both sides of the rollers that need to be sprayed.

6. A profile rolling mill roll lubrication device according to claim 1, characterized in that: The water baffle (9) is installed at the lower part of the air knife branch pipe (3) and the mixed liquid branch pipe (4) through an adjusting block, and an adjusting locking knob is installed on the adjusting block.

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