Oil scraping device at discharging end of cold rolling mill

Abstract

The invention relates to the technical field of cold rolling mills, in particular to a cold rolling mill discharging end oil scraping device which comprises an oil collecting tank, an oil guide pipe and an oil scraping structure, the oil scraping structure is arranged at the output end of a cold rolling mill and arranged on a steel pipe in a sleeving mode, a flow guide plate is fixedly arranged in the oil collecting tank, and a screening structure is arranged at the lower end of the flow guide plate. A partition plate is rotationally arranged in the oil collecting tank, a collecting structure matched with the partition plate and the flow guide plate is arranged in the oil collecting tank, and the screening structure is arranged to screen the scraped and collected lubricating oil and adsorb iron powder carried in the lubricating oil, so that the purity of the lubricating oil is guaranteed, and the oil spraying and coating device is prevented from being blocked during recycling; the screening structure is regularly controlled to be away from the flow guide plate, screening of lubricating oil can be canceled, iron powder attached to the flow guide plate flows along with the lubricating oil, meanwhile, the angle of the partition plate is changed, and the lubricating oil rich in the iron powder flows into the collecting structure to be collected and filtered.

Description

Technical Field

[0001] This invention relates to the field of cold rolling mill technology, and in particular to an oil scraping device at the discharge end of a cold rolling mill. Background Technology

[0002] A cold rolling mill is a process equipment that uses a ring-shaped die to cold roll rough tubes. This machine has good billet-making performance and can also roll non-ferrous metal seamless tubes of ordinary precision. The biggest advantage of a cold rolling mill is its high material utilization rate, and its precision and surface roughness are superior to cold-drawn tubes. Cold-rolled tubes are widely used in various sectors of the national economy due to their superior characteristics. Cold-rolled tubes have a fine grain structure and superior mechanical and physical properties. Cold rolling mills have a greater ability to correct deviations in the wall thickness of the original billet, resulting in accurate geometric dimensions and a high surface finish. The deformation per pass is relatively large, reaching 70%–90%. Using cold rolling to produce tubes can significantly reduce intermediate processes, such as heat treatment, pickling, heading, and straightening, reducing the consumption of metal materials, fuel, electricity, other auxiliary materials, and manpower. Cold rolling can produce thin-walled, ultra-thin-walled, and high-quality tubes with no scratches on the inner and outer surfaces. It can effectively roll various high-alloy steel pipes and non-ferrous metal pipes with poor plasticity.

[0003] The surface of finished seamless steel pipes from cold rolling mills contains a large amount of lubricating oil. To save costs and protect the environment, it is necessary to recycle and reuse the lubricating oil on the surface of the finished seamless steel pipes. Existing collection methods include: 1. Making the receiving rack for collecting finished seamless steel pipes at a certain angle, and placing an oil receiving tray below the receiving rack; after the finished seamless steel pipes are rolled, they are collected in the receiving rack. Due to the angle, the lubricating oil on the surface of the finished seamless steel pipes will flow down the angle and drip into the oil receiving tray. This is easy to operate, but the collection efficiency is low; 2. In order to improve the efficiency of collecting lubricating oil, an oil scraping structure is used at the discharge end of the cold rolling mill to scrape off the lubricating oil on the seamless steel pipes, and then collect it through the collection structure. Compared with free fall collection, the efficiency is higher and more lubricating oil is recovered. However, the collected lubricating oil contains iron powder that has been scraped off, which can easily clog the oil spraying and coating device when the lubricating oil is reused. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as low collection efficiency of freely dripping lubricating oil and high collection efficiency of oil scraping structures, but the collected lubricating oil contains scraped iron powder, which easily clogs the oil spraying and coating device when the lubricating oil is reused. Therefore, this invention proposes an oil scraping device at the discharge end of a cold rolling mill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design an oil scraping device at the discharge end of a cold rolling mill, including an oil collection tank, an oil guide pipe, and an oil scraping structure. The oil scraping structure is installed at the output end of the cold rolling mill and sleeved on a steel pipe. The lower end of the oil scraping structure has an outlet that cooperates with the oil guide pipe. A guide plate is fixedly installed inside the oil collection tank. A screening structure is installed at the lower end of the guide plate. A baffle is rotatably installed inside the oil collection tank. A collection structure that cooperates with the baffle and the guide plate is installed inside the oil collection tank.

[0007] Furthermore, the oil-scraping structure includes a housing and an oil-scraping part, the oil-scraping part being threadedly connected to the housing.

[0008] Furthermore, the screening structure includes an installation plate disposed in the oil collection tank, the guide plate having a groove that mates with the installation plate, and the installation plate having a plurality of installation slots spaced apart, each of which is embedded with a magnet.

[0009] Furthermore, two control rods are fixedly installed at the lower end of the mounting plate. The two control rods respectively contact the inner walls on both sides of the oil collection tank. A drive assembly that cooperates with the two control rods is installed inside the oil collection tank.

[0010] Furthermore, a control unit is provided on one side of the oil collection tank to cooperate with the two drive components, and the control unit is poweredly connected to the partition through a transmission structure.

[0011] Furthermore, the drive assembly includes meshing gears and racks, the rack being embedded in the control lever, the gears being rotatably mounted on the inner wall of the oil collection tank, and a drive shaft being rotatably mounted on the oil collection tank.

[0012] Furthermore, the drive shaft is fixedly connected to both gears, and both ends of the drive shaft pass through the oil collection tank and are respectively poweredly connected to the control unit and the transmission structure.

[0013] Furthermore, the control unit includes a connecting plate, on which a handle is fixedly mounted. A protective cover that cooperates with the connecting plate and the handle is fixedly mounted on one side of the oil collection tank. The protective cover has a sliding groove that cooperates with the handle.

[0014] Furthermore, the transmission structure includes two synchronous pulleys of different sizes, which are connected by a synchronous belt, and are respectively connected to the drive shaft and the partition.

[0015] Furthermore, the collection structure includes an inclined plate fixedly installed inside the oil collection tank, a through groove is provided on the inclined plate, a support mesh is fixedly installed in the through groove, and a filter layer is provided on the support mesh.

[0016] The oil scraping device at the discharge end of a cold rolling mill proposed in this invention has the following advantages:

[0017] In this invention, a screening structure is set up to screen the scraped and collected lubricating oil, adsorb the iron powder carried in the lubricating oil, thereby ensuring the purity of the lubricating oil and preventing clogging of the oil spraying and coating device during recycling.

[0018] Secondly, in this invention, by periodically controlling the screening structure to move away from the guide plate, the screening of the lubricating oil can be eliminated. The iron powder attached to the guide plate flows with the lubricating oil. At the same time, the angle of the baffle changes, and the lubricating oil rich in iron powder flows into the collection structure for collection and filtration, filtering out the iron powder for easy processing and preventing excessive iron powder attached to the guide plate from affecting the screening effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an oil scraping device at the discharge end of a cold rolling mill proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the enlarged structure of region A of the present invention;

[0021] Figure 3 This is a schematic diagram of the enlarged structure of region B of the present invention;

[0022] Figure 4 This is a schematic diagram of the enlarged structure of region C of the present invention;

[0023] Figure 5 This is a schematic diagram of the drive rod of the present invention;

[0024] Figure 6 This is a schematic diagram of the pulley structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the handle of the present invention.

[0026] In the diagram: 1. Oil collection tank; 2. Oil guide pipe; 3. Oil scraping structure; 31. Shell; 32. Oil scraping part; 4. Cold rolling mill; 5. Guide plate; 6. Screening structure; 61. Mounting plate; 62. Magnet; 63. Control lever; 64. Drive assembly; 641. Gear; 642. Rack; 643. Drive shaft; 65. Control unit; 651. Connecting plate; 652. Handle; 653. Protective cover; 66. Transmission structure; 661. Synchronous pulley; 662. Synchronous belt; 7. Partition; 8. Collection structure; 81. Inclined plate; 82. Filter layer. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1-7 An oil scraping device at the discharge end of a cold rolling mill includes an oil collection tank 1, an oil guide pipe 2, and an oil scraping structure 3. The oil scraping structure 3 is installed at the output end of the cold rolling mill 4 and sleeved on a steel pipe. The lower end of the oil scraping structure 3 has an outlet that cooperates with the oil guide pipe 2. A guide plate 5 is fixedly installed inside the oil collection tank 1. The guide plate 5 has an inclined structure. A screening structure 6 is installed at the lower end of the guide plate 5. A partition plate 7 is rotatably installed inside the oil collection tank 1. A collection structure 8 that cooperates with the partition plate 7 and the guide plate 5 is installed inside the oil collection tank 1. A sealing door is installed on the side of the oil collection tank 1 near the collection structure 8. The sealing door can be opened to clean the collection structure and replace the filter layer 82.

[0029] In this invention, the lubricating oil on the steel pipe is scraped off by the scraper structure 3, and the lubricating oil enters the oil collection tank 1 through the outlet and the guide pipe 2. The lubricating oil is guided by the guide plate 5, and the collected lubricating oil is screened by the screening structure 6 to adsorb the iron powder carried in the lubricating oil, thereby ensuring the purity of the lubricating oil and preventing the oil spraying device from being blocked during recycling. By periodically controlling the screening structure 6 to move away from the guide plate 5, the screening of the lubricating oil can be canceled. The iron powder attached to the guide plate 5 flows with the lubricating oil. At the same time, the angle of the baffle 7 changes, and the lubricating oil rich in iron powder flows into the collection structure 8 for collection and filtration, filtering out the iron powder for easy processing and preventing too much iron powder attached to the guide plate 5 from affecting the screening effect.

[0030] Furthermore, in this embodiment, the oil scraping structure 3 includes a housing 31 and an oil scraping part 32. The oil scraping part 32 is threadedly connected to the housing 31, and the worn oil scraping part 32 can be removed and replaced after long-term use, thereby ensuring the oil scraping effect.

[0031] Furthermore, in this embodiment, the screening structure 6 includes a mounting plate 61 disposed in the oil collection tank 1. The guide plate 5 has a groove that cooperates with the mounting plate 61. The mounting plate 61 is provided with multiple mounting slots at intervals. Each mounting slot is embedded with a magnet 62. The lubricating oil is screened by multiple magnets 62, and the mixed iron powder is adsorbed. The multiple magnets 62 adsorb and screen multiple times to improve the purity of the lubricating oil.

[0032] In this embodiment, two control rods 63 are fixedly installed at the lower end of the mounting plate 61. A guide block assembly that cooperates with the control rods 63 is fixedly installed on the inner wall of the oil collection tank 1. The control rods 63 are inserted between the guide blocks. The two control rods 63 are respectively in contact with the inner walls on both sides of the oil collection tank 1. A drive assembly 64 that cooperates with the two control rods 63 is installed inside the oil collection tank 1. The drive assembly 64 drives the two control rods 63 to move up and down, thereby controlling the mounting plate 61 to insert into or move away from the groove of the guide plate 5, so as to achieve the screening or release of the lubricating oil.

[0033] It should be noted that, in this embodiment, a control unit 65 is provided on one side of the oil collection tank 1 to cooperate with the two drive components 64. The control unit 65 is poweredly connected to the partition 7 through the transmission structure 66. The control unit 65 controls the position of the mounting plate 61, thereby controlling whether the lubricating oil is screened. While controlling the mounting plate 61, the angle of the partition 7 is controlled accordingly, so that the lubricating oil rich in iron powder is input into the collection structure 8.

[0034] In this embodiment, the drive assembly 64 includes a meshing gear 641 and a rack 642. The rack 642 is embedded in the control rod 63. The gear 641 is rotatably mounted on the inner wall of the oil collection tank 1. A drive shaft 643 is rotatably mounted on the oil collection tank 1. The drive shaft 643 drives the gear 641 to rotate. The gear 641 drives the control rod 63 and the mounting plate 61 to move up and down, thereby controlling the mounting plate 61 to insert into or move away from the groove of the guide plate 5, so as to achieve the screening or release of the lubricating oil.

[0035] In this embodiment, the drive shaft 643 is fixedly connected to two gears 641. Both ends of the drive shaft 643 pass through the oil collection tank 1 and are respectively connected to the control unit 65 and the transmission structure 66. The control unit 65 controls the rotation of the drive shaft 643, thereby controlling the mounting plate 61 to insert into or move away from the groove of the guide plate 5. When the drive shaft 643 rotates, the partition plate 7 changes its angle as it rotates under the action of the transmission structure 66.

[0036] Furthermore, in this embodiment, the control unit 65 includes a connecting plate 651, on which a handle 652 is fixedly mounted. A protective cover 653 that cooperates with the connecting plate 651 and the handle 652 is fixedly mounted on one side of the oil collection tank 1. The protective cover 653 has a sliding groove that cooperates with the handle 652. The handle 652 and the connecting plate 651 cooperate to form a force-saving lever, reducing the difficulty of rotating the drive shaft 643. By setting the sliding groove, the movement trajectory of the handle 652 is restricted, preventing the handle 652 from being broken.

[0037] In detail, in this embodiment, the transmission structure 66 includes two synchronous pulleys 661 of different sizes, which are connected by a synchronous belt 662. The two synchronous pulleys 661 are respectively connected to the drive shaft 643 and the partition plate 7. In some embodiments, a guide frame is provided on one side of the oil collection tank 1, and a tensioning block is movably inserted into the guide frame. A tensioning pulley that cooperates with the synchronous belt 662 is rotatably provided on the tensioning block. A spring is provided between the tensioning block and the guide frame. A dust cover is fixedly provided on the oil collection tank 1.

[0038] More specifically, in this embodiment, the collecting structure 8 includes an inclined plate 81 fixedly disposed in the oil collection tank 1. A through groove is provided on the inclined plate 81, and a support mesh is fixedly disposed in the through groove. A filter layer 82 is disposed on the support mesh. When the screening of the lubricating oil is cancelled, the partition plate 7 rotates, and the lubricating oil rich in iron powder flows into the inclined plate 81. Under the action of the inclined plate 81, it accumulates on the filter layer 82. The lubricating oil is filtered through the filter layer 82 to remove iron powder, and the iron powder is collected on the filter layer 82 for easy cleaning.

[0039] Working method: During operation, the lubricating oil on the steel pipe is scraped off by the oil scraper structure 3, and the lubricating oil enters the oil collection tank 1 through the discharge port and oil guide pipe 2. The lubricating oil is guided by the guide plate 5, and the collected lubricating oil is screened by the screening structure 6 to adsorb the iron powder carried in the lubricating oil, thereby ensuring the purity of the lubricating oil and preventing the oil spraying and coating device from being blocked during recycling. The flow direction of the lubricating oil is controlled by the baffle plate 7.

[0040] By pulling the handle 652, the drive shaft 643 is rotated, which in turn drives the gear 641 to rotate. The gear 641 drives the control rod 63 and the mounting plate 61 to move downward, controlling the mounting plate 61 away from the groove of the guide plate 5, thus releasing the sieving of the lubricating oil. At the same time as the drive shaft 643 rotates, the synchronous pulley 661 connected to it rotates. The synchronous belt 662 drives the synchronous pulley 661 connected to the partition plate 7 to rotate, causing the partition plate 7 to rotate and change its angle. When the lubricating oil passes through the guide plate 5, it carries away the iron powder attached to the guide plate 5, forming lubricating oil rich in iron powder. Under the guidance of the guide plate 5, the lubricating oil flows into the inclined plate 81 and finally accumulates on the filter layer 82 under the guidance of the inclined plate 81. The filter layer 82 filters the lubricating oil, removes the iron powder, and collects the iron powder on the filter layer 82 for easy cleaning.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An oil scraping device at the discharge end of a cold rolling mill, comprising an oil collection tank (1), an oil guide pipe (2), and an oil scraping structure (3), wherein the oil scraping structure (3) is disposed at the output end of the cold rolling mill (4) and sleeved on a steel pipe, characterized in that, The lower end of the oil scraping structure (3) is provided with an outlet that cooperates with the oil guide pipe (2). A guide plate (5) is fixedly installed inside the oil collection tank (1). A screening structure (6) is provided at the lower end of the guide plate (5). A partition plate (7) is rotatably installed inside the oil collection tank (1). A collection structure (8) that cooperates with the partition plate (7) and the guide plate (5) is provided inside the oil collection tank (1).

2. The oil scraping device at the discharge end of the cold rolling mill according to claim 1, characterized in that: The oil scraping structure (3) includes a housing (31) and an oil scraping part (32), which is threadedly connected to the housing (31).

3. The oil scraping device at the discharge end of the cold rolling mill according to claim 1, characterized in that: The screening structure (6) includes an installation plate (61) disposed in the oil collection tank (1). The guide plate (5) has a groove that cooperates with the installation plate (61). The installation plate (61) has multiple installation slots spaced apart, and each installation slot is embedded with a magnet (62).

4. The oil scraping device at the discharge end of the cold rolling mill according to claim 3, characterized in that: Two control rods (63) are fixedly installed at the lower end of the mounting plate (61). The two control rods (63) are in contact with the inner walls on both sides of the oil collection tank (1). The oil collection tank (1) is provided with a drive assembly (64) that cooperates with the two control rods (63).

5. The oil scraping device at the discharge end of the cold rolling mill according to claim 4, characterized in that: A control unit (65) is provided on one side of the oil collection tank (1) to cooperate with the two drive components (64). The control unit (65) is poweredly connected to the partition (7) through a transmission structure (66).

6. The oil scraping device at the discharge end of the cold rolling mill according to claim 5, characterized in that: The drive assembly (64) includes a gear (641) and a rack (642) that mesh with each other. The rack (642) is embedded in the control lever (63). The gear (641) is rotatably disposed on the inner wall of the oil collection tank (1). A drive shaft (643) is rotatably disposed on the oil collection tank (1).

7. The oil scraping device at the discharge end of the cold rolling mill according to claim 6, characterized in that: The drive shaft (643) is fixedly connected to both gears (641). Both ends of the drive shaft (643) pass through the oil collection tank (1) and are poweredly connected to the control unit (65) and the transmission structure (66) respectively.

8. The oil scraping device at the discharge end of the cold rolling mill according to claim 7, characterized in that: The control unit (65) includes a connecting plate (651), on which a handle (652) is fixedly mounted. A protective cover (653) that cooperates with the connecting plate (651) and the handle (652) is fixedly mounted on one side of the oil collection tank (1). The protective cover (653) has a groove that cooperates with the handle (652).

9. The oil scraping device at the discharge end of the cold rolling mill according to claim 7, characterized in that: The transmission structure (66) includes two synchronous pulleys (661) of different sizes, which are connected by a synchronous belt (662). The two synchronous pulleys (661) are connected to the drive shaft (643) and the partition plate (7) respectively.

10. The oil scraping device at the discharge end of the cold rolling mill according to claim 1, characterized in that: The collection structure (8) includes an inclined plate (81) fixedly installed in the oil collection tank (1). A through groove is provided on the inclined plate (81), and a support mesh is fixedly installed in the through groove. A filter layer (82) is provided on the support mesh.

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