Oil removing device of full-oil rolling mill

Abstract

The utility model discloses an oil removing device of a full-oil rolling mill. The oil removing device comprises a rack, an oil scraping mechanism, a drainage mechanism, a purging mechanism and an oil removing roller, wherein the oil scraping mechanism, the drainage mechanism and the purging mechanism are arranged on the rack; wherein an upper working roller and a lower working roller which are used for rolling a base material belt are arranged on the rack, and an upper supporting roller and a lower supporting roller which are used in cooperation with the two working rollers are further arranged on the rack; wherein the oil scraping mechanisms are arranged on the two sides of the supporting roller on the uppermost layer respectively. Wherein a plurality of purging mechanisms are arranged between the oil removing roller and the working roller. According to the utility model, the oil scraping mechanism and the drainage mechanism are matched for use, so that the residual amount of rolling oil of a base material belt is reduced, the production and processing cost is reduced, the oil removal effect, the low rolling speed and the production efficiency are improved, and the cleanness and the safety of a production workshop can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of metal forging, in particular to an oil removal device for a full-oil rolling mill. Background Art

[0002] To ensure product quality, medium-finishing rolling mills generally use rolling oil for lubrication. The rolling oil has good lubricating performance, cooling performance and stable performance under high temperature and high pressure; it cannot undergo obvious deterioration during rolling, has a small evaporation amount during rolling, is easy to evaporate during annealing, and is not easy to form oil spots. However, the problem of oil removal from the rolling mill has become an indispensable main problem. Poor oil removal effect will cause a series of negative impacts:

[0003] 1. There are potential safety hazards: During the lifting process of the coil, oil will drip onto the ground, causing people to slip and fall.

[0004] 2. Affect product quality: Poor oil removal effect will lead to too high residual oil content on the surface of the strip. During coiling, it is easy to deviate, misalign, and slip, and it also increases the difficulty of annealing treatment of the strip, affecting the surface quality.

[0005] 3. Reduce production efficiency: Poor oil removal effect will cause the strip to deviate and reduce the rolling speed, affecting production efficiency.

[0006] 4. Increase production costs: Poor oil removal effect will increase the residual oil content on the surface of the strip, directly resulting in an increase in production costs.

[0007] In summary, the quality of the oil removal effect of the rolling mill directly affects safety, quality, efficiency, and cost. Therefore, analyzing from the development process of oil removal and combining the currently used oil removal methods, the currently suitable oil removal methods for the high-speed rolling state of the rolling mill are:

[0008] (1) Three-roll oil removal, (2) Five-roll oil removal, (3) Scraping strip oil removal, (4) Backup roll oil removal, (5) Blowing and sweeping oil removal, (6) Steel roll pair-roll oil removal, (7) Vacuum suction oil removal, (8) 3M roll oil removal;

[0009] The above are several commonly used oil removal devices on medium-finishing rolling mills. It is very difficult to achieve the oil removal effect of the strip only by a certain one of the above oil removal devices; therefore, the existing rolling mill oil removal usually uses a combination of two or more of the above devices for oil removal. However, too many oil removal devices will not only increase the maintenance cost but also affect the surface quality of the product. Summary of the Utility Model

[0010] The purpose of the utility model is to provide an oil removal device for a full-oil rolling mill, which solves the problem that too many existing oil removal devices will not only increase the maintenance cost but also affect the surface quality of the product.

[0011] To solve the above technical problems, the utility model adopts the following technical solutions:

[0012] The utility model provides an oil removal device for a full oil rolling mill, which comprises a frame, an oil scraping mechanism, a drainage mechanism, a purging mechanism and an oil removal roller arranged on the frame;

[0013] Wherein, two working rollers for rolling a base material belt are arranged on the frame, and two upper and lower supporting rollers cooperating with the two working rollers are also arranged on the frame;

[0014] Wherein, the oil scraping mechanism is respectively arranged on both sides of the uppermost supporting roller;

[0015] The oil scraping mechanism comprises a telescopic cylinder arranged on the frame, a cross beam connected to the telescopic end of the telescopic cylinder, and an oil scraping plate arranged on the cross beam;

[0016] The drainage mechanism is arranged on both sides of the working roller and the supporting roller above the base material belt;

[0017] The drainage mechanism comprises guide plates respectively arranged on both sides of the working roller and the supporting roller; wherein drainage openings are respectively formed at both ends of the guide plates;

[0018] Wherein, a plurality of purging mechanisms are arranged between the oil removal roller and the working roller.

[0019] Further, the cross beam is adjusted to expand and contract through two telescopic cylinders, and a limit switch is arranged on the telescopic cylinder.

[0020] Still further, baffles are respectively arranged on the top and side walls of the guide plate, and drainage openings are formed on both sides of the top of the guide plate.

[0021] Still further, the purging mechanism comprises air knives respectively arranged obliquely above and below the conveying surface of the base material belt; wherein the air knives are linear air knives and are connected to a blower or a compressed air source through an air inlet pipe.

[0022] Still further, the air knives are installed at an angle of 45° with the conveying surface of the base material belt, and the compressed air pressure is 0.6 Mpa.

[0023] Still further, the oil removal roller is a three-roller oil removal roller, which comprises two lower oil removal rollers located below the conveying surface of the base material belt and one upper oil removal roller located above the conveying surface of the base material belt;

[0024] Wherein, the upper oil removal roller is adjusted to lift and press the base material belt through a telescopic cylinder.

[0025] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0026] In the present utility model, through the combined use of an oil scraping mechanism and a drainage mechanism, the residual amount of rolling oil on the base material strip is reduced, the production and processing cost is reduced, the oil removal effect, low rolling speed and production efficiency are improved, and the cleanliness and safety of the production workshop can be ensured. Description of the Drawings

[0027] The present utility model will be further described below in conjunction with the drawings.

[0028] Figure 1 Schematic diagram of the main connection of the oil removal device for a full oil rolling mill of the present utility model;

[0029] Figure 2 Schematic diagram of the oil scraping mechanism in the oil removal device for a full oil rolling mill of the present utility model;

[0030] Figure 3 Schematic diagram of the bottom of the drainage mechanism in the oil removal device for a full oil rolling mill of the present utility model;

[0031] Figure 4 Schematic top view of the purging mechanism in the oil removal device for a full oil rolling mill of the present utility model;

[0032] Figure 5 Schematic end view of the purging mechanism in the oil removal device for a full oil rolling mill of the present utility model;

[0033] Figure 6 Schematic diagram of the oil removal roll in the oil removal device for a full oil rolling mill of the present utility model;

[0034] Figure 7 Schematic diagram of the oil circuit circulation of a full oil rolling mill in the prior art.

[0035] Description of the reference numerals: 100, oil scraping mechanism; 101, telescopic cylinder; 102, cross beam; 103, oil scraping plate; 200, drainage mechanism; 201, guide plate; 202, drainage port; 300, purging mechanism; 301, air knife; 302, intake pipe; 400, oil removal roll; 401, upper oil removal roll; 402, lower oil removal roll; 500, working roll; 600, support roll. Detailed Description of the Embodiment

[0036] As Figure 1 shown, an oil removal device for a full oil rolling mill is disclosed in this embodiment, including a frame, an oil scraping mechanism 100, a drainage mechanism 200, a purging mechanism 300, and an oil removal roll 400 installed on the frame. Among them, two upper and lower working rolls 500 for rolling the base material strip are installed on the frame, and two upper and lower support rolls 600 cooperating with the two working rolls 500 are also installed on the frame.

[0037] Among them, the oil scraping mechanisms 100 are respectively installed on both sides of the uppermost support roll 600.

[0038] As shown Figure 2 in the figure, the oil scraping mechanism 100 includes a telescopic cylinder 101 installed on the frame, a cross beam 102 connected to the telescopic end of the telescopic cylinder 101, and an oil scraping plate 103 installed on the cross beam 102. The oil scraping plate 103 is adjusted to be close to or far from the support roller 600 through the telescopic cylinder 101; the cross beam 102 is adjusted to expand and contract through two telescopic cylinders 101, and a limit switch is installed on the telescopic cylinder 101, so as to facilitate adjusting the position of the oil scraping plate 103 according to requirements.

[0039] The oil scraping plate 103 is adapted to the roll body length of the support roller 600 and can expand and contract radially along the support roller 600. The oil scraping plate 103 is driven by the telescopic cylinder 101 (cylinder) to be uniformly pressed against the roll surface of the support roller 600. During the production process, only the oil scraping plate 103 on the inlet side is put into use. The upper support roller 600 rotates along the outlet side direction, and the oil will be thrown onto the surface of the base material strip during the rolling process. The function of the oil scraping plate 103 is to reduce the oil on the upper support roller 600 from being thrown onto the surface of the outlet strip.

[0040] In this embodiment, as Figure 3 shown in the figure, a drainage mechanism 200 is installed on both sides of the work roll 500 and the support roller 600 above the base material strip; the drainage mechanism 200 includes guide plates 201 respectively installed on both sides of the work roll 500 and the support roller 600; drainage openings 202 are respectively opened at both ends of the guide plate 201. Specifically, baffles are respectively installed on the top and side walls of the guide plate 201, and the drainage openings 202 are opened on both sides of the top of the guide plate 201.

[0041] The drainage mechanism 200 is installed in the frame to form a box structure located above the strip, including a guide plate 201, an outer frame body, and fasteners for installing on the frame; the oil is drained away by the method of blocking and guiding. When the oil flows to the position of the guide plate 201, it will flow to the drainage openings 202 on both sides. (As Figure 3 shown in the figure), the oil will not drip on the surface of the strip, thereby reducing the residual oil on the strip surface. The width of the guide plate 201 should not be made too short, otherwise the oil thrown out at the roll neck of the roll system cannot be completely received. The function of the drainage mechanism 200 is also to reduce the oil on the upper support roller from being thrown onto the surface of the outlet strip and assist the oil scraping device to perform secondary oil removal.

[0042] In this embodiment, as Figure 4As shown, a plurality of purging mechanisms 300 are installed between the degreasing roller 400 and the working roller 500; the purging mechanism 300 includes air knives 301 that are respectively installed obliquely above and below the conveying surface of the base material belt; the air knives 301 are linear air knives and are connected to the fan or compressed air source through air inlet pipes 302; specifically, during implementation, the air knives 301 are installed at an angle of 45° with the conveying surface of the base material belt, and the compressed air pressure is 0.6 Mpa.

[0043] The purging of the air knives 301 is divided into two rows, upper and lower. A low-pressure and large-flow purging method is adopted and they must be installed between the three rollers and the roll gap (as Figure 1 and 3 shown). This can effectively reduce noise and the outflow of oil mist. At the same time, the rolling oil will not splash onto the plate surface again. A separate fan or air storage tank needs to be added to ensure the stability of the air pressure. Through the cooperation of the oil scraping mechanism 100 and the drainage mechanism 200, there is no visible residual oil on the surface of the strip. After purging by the upper and lower air knives, the roughness of the working roller is ≥ Ra: 0.18; for most specifications of the produced materials, the three-roller degreasing roller does not need to be pressed, which can greatly improve the surface quality.

[0044] In this embodiment, the degreasing roller 400 is a three-roller degreasing roller, which includes two lower degreasing rollers 402 located below the conveying surface of the base material belt and one upper degreasing roller 401 located above the conveying surface of the base material belt; the lower degreasing rollers 402 are installed on the frame through bearing seats; the upper degreasing roller 401 is adjusted to lift and press the base material belt through a telescopic cylinder; specifically, a lifting oil cylinder is installed on the frame, and a bearing seat is installed at the telescopic end of the lifting oil cylinder. Both ends of the upper degreasing roller 401 are respectively installed on the bearing seats, so as to adjust the relative lifting of the upper degreasing roller 401 by using the lifting oil cylinder.

[0045] For the three-roller degreasing roller, the upper degreasing roller 401 is controlled to lift and lower by a hydraulic cylinder, and a wrap angle will be generated when pressing down (as Figure 5 shown). The upper degreasing roller 401 can adjust the pressing position to control the contact force with the strip. It is necessary to select and fix a suitable position through mechanical limiting to reduce the generation of scratches. The recommended range of the roll diameter is 80 - 100 mm, and an oil-air lubrication device needs to be installed on the bearing seat. The three-roller degreasing roller can be selectively used. When rolling, it can be pressed down, which can not only degrease but also play a role in stabilizing the rolling. For some high-surface materials (such as the roughness of the working roller Ra: 0.08), it can be lifted for production to prevent the three rollers from scratching the surface of the strip.

[0046] The upper degreasing roll 401 can adjust the position of the roll gap to control the contact force with the strip. It is necessary to select and fix a suitable position by mechanical limiting. The recommended range of the roll diameter is 80 - 100 mm, and the bearing lubrication needs to use oil - air lubrication, which can ensure the rotational synchronization and reduce scratching at the same time. The three - roll degreasing roll can be selectively used. When rolling, it can be lowered to not only degrease but also stabilize the rolling. Some high - surface - quality materials (such as the working roll roughness Ra: 0.08) can be lifted during production to reduce surface scratching.

[0047] It has been tested on four - high and six - high copper rolling mills and steel rolling mills in the early stage. For four - high and six - high copper rolling mills, when the working roll roughness Ra: 0.08, the rolling speed can reach 300 m / min; when the working roll roughness Ra: 0.18, the rolling speed can reach 500 m / min, and the surface quality is good. It has been continuously produced for about three years. For four - high and six - high steel rolling mills, when the working roll roughness Ra: 0.3, the rolling speed can reach 1200 m / min, and the surface quality is good. The effects are all very obvious.

[0048] The above embodiments only describe the preferred mode of the present invention - creation, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. An oil removal device for a full oil rolling mill, characterized in that: It includes a frame, an oil scraping mechanism (100), a drainage mechanism (200), a purging mechanism (300), and an oil removing roller (400) provided on the frame; Among them, two working rollers (500) for rolling the base material belt are provided on the frame, and two upper and lower support rollers (600) used in cooperation with the two working rollers (500) are also provided on the frame; Among them, the oil scraping mechanism (100) is respectively provided on both sides of the uppermost support roller (600); The oil scraping mechanism (100) includes a telescopic cylinder (101) provided on the frame, a cross beam (102) connected to the telescopic end of the telescopic cylinder (101), and an oil scraping plate (103) provided on the cross beam (102); The drainage mechanism (200) is provided on both sides of the working roller (500) and the support roller (600) above the base material belt; The drainage mechanism (200) includes guide plates (201) respectively provided on both sides of the working roller (500) and the support roller (600); among them, drainage ports (202) are respectively opened on both end sides of the guide plate (201); Among them, a plurality of purging mechanisms (300) are provided between the oil removing roller (400) and the working roller (500).

2. The oil removal device of the all-oil rolling mill according to claim 1, characterized in that: The cross beam (102) adjusts its telescopic length through two telescopic cylinders (101), and limit switches are provided on the telescopic cylinders (101).

3. The oil removal device of the all-oil rolling mill according to claim 2, characterized in that: Baffles are respectively provided on the top and side walls of the guide plate (201), and the drainage ports (202) are opened on both sides of the top of the guide plate (201).

4. The oil removal device of the all-oil rolling mill according to claim 3, characterized in that: The purging mechanism (300) includes air knives (301) respectively inclined below and above the conveying surface of the base material belt; among them, the air knives (301) are linear air knives and are connected to a blower or a compressed air source through air inlet pipes (302).

5. The oil removal device of the full oil rolling mill according to claim 4, characterized in that: The air knives (301) are installed at an angle of 45° with the conveying surface of the base material belt, and the pressure of the compressed air source is 0.6 Mpa.

6. The oil removal device of the full oil rolling mill according to claim 5, characterized in that: The oil removing roller (400) is a three-roller oil removing roller, which includes two lower oil removing rollers (402) located below the conveying surface of the base material belt and one upper oil removing roller (401) located above the conveying surface of the base material belt; Among them, the upper oil removing roller (401) adjusts its lifting through a telescopic cylinder to tightly press the base material belt.

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