Backwashing device for dirty oil tank of rolling mill

Abstract

The utility model relates to a rolling mill sump oil tank backwashing device which comprises a filter pump, a backwashing pipe and a scraping assembly, an inlet and an outlet of the filter pump are respectively communicated with a sump oil tank and the backwashing pipe, the backwashing pipe comprises a main pipe and branch pipes which are communicated front and back, the tail end of the main pipe is connected with at least two branch pipes in parallel, and the two branch pipes are arranged on the bottom surface of the sump oil tank at intervals; the tail end of each branch pipe is closed, a plurality of nozzles are arranged on each branch pipe at intervals, outlets of the nozzles face the bottom face of the sump oil tank, each branch pipe is provided with a scraping assembly, and each scraping assembly comprises at least two sets of driving pieces and scraping pieces arranged between every two adjacent sets of driving pieces. Each driving part comprises a driving pipe and a moving pipe, the driving pipes communicate with the branch pipes, the moving pipes are elastically and slidably connected to the driving pipes, and scraping parts are arranged on the moving pipes of every two adjacent driving parts. According to the oil stain cleaning device, oil stains are washed and turned over through the nozzle and scraped through the scraping piece, the two modes are combined, manual work can be replaced, the oil stains are effectively cleaned, and oil stain deposition is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dirt removal, in particular to a backwashing device for a dirty oil tank of a rolling mill. Background Art

[0002] The rolling oil used in the rolling mill can be used for process lubrication of large and medium-sized cold rolling mills. The rolling oil has good lubricity, cooling and annealing cleanliness. The rolling oil is circulated, so it needs to be filtered. The filtering process is as follows: the return oil of the rolling mill passes through the fire gate valve in the return oil pipeline and enters the dirty oil tank. The dirty oil tank is then pumped to the oil filter by multiple parallel filter pumps to filter the dirty oil. The filtered oil is then returned to the static oil tank. Finally, the circulating pump re-transports the filtered oil to the rolling mill. Figure 1 shown.

[0003] In the above filtering process, during the rolling process of aluminum strip, the plate surface carries aluminum powder, dust, sludge and other debris, and the rolling oil will carry the debris into the dirty oil tank for precipitation, and then a layer of oil and grease will be deposited at the bottom of the dirty oil tank. As time accumulates, the grease gradually increases, which will cause the oil tank volume to become smaller, the oil supply to decrease, and at the same time increase the burden on the oil filter.

[0004] For the treatment of oil stains, the general rule is to first shut down the machine and drain the oil in the dirty oil tank. Professionals wearing special protective equipment can enter the tank to clean it. The dirty oil tank is a closed space. The oil stains also contain a certain amount of additives, diatomaceous earth and other impurities, which will bring a pungent smell. It takes several hours to clean it. Manual cleaning is time-consuming and laborious, and there is a certain degree of danger. Summary of the invention

[0005] In order to solve the problems that conventional manual removal of oil stains has high safety risks, low efficiency and affects normal production, the utility model provides a rolling mill dirty oil tank backwashing device, which uses backwashing to flush the oil stains at the bottom of the dirty oil tank and scrapes them off at the same time, eliminating manual removal, thereby ensuring safety and improving production efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The rolling mill dirty oil tank backwashing device comprises a filter pump, a backwashing pipe and a scraping assembly, wherein the filter pump inlet and outlet are respectively connected to the dirty oil tank and the backwashing pipe, so as to facilitate the extraction of oil and supply it to the backwashing pipe, and the backwashing pipe comprises a main pipe and a branch pipe connected front and back, and at least two branch pipes are connected in parallel at the end of the main pipe, so as to facilitate the simultaneous delivery of oil to multiple branch pipes, and the two branch pipes are arranged at intervals on the bottom surface of the dirty oil tank;

[0008] The end of each branch pipe is closed, and a plurality of nozzles are arranged at intervals on the branch pipe, and the nozzle outlets face the bottom surface of the dirty oil tank, so as to facilitate washing the oil dirt on the bottom surface of the dirty oil tank. Each branch pipe is provided with the scraping assembly, which includes at least two groups of driving members and a scraping member arranged between two adjacent groups of driving members, and the driving member can drive the scraping member to move along the bottom surface of the dirty oil tank to scrape the oil dirt;

[0009] The driving member includes a driving tube and a moving tube. The driving tube is connected to the branch tube. The moving tube is elastically slidably connected to the driving tube. Both ends of the moving tube are closed. A hole is opened at the front end of the moving tube for the driving tube to pass through. The scraping member is arranged on the moving tubes of two adjacent groups of driving members.

[0010] Furthermore, the end of the main pipe extends into the dirty oil tank to connect with multiple branch pipes, and the head end of the main pipe is connected to the filter pump. The multiple branch pipes evenly divide the bottom surface of the dirty oil tank into multiple cleaning areas, and each cleaning area corresponds to a scraping component, which is convenient for scraping oil from each cleaning area.

[0011] Furthermore, both ends of the driving tube are open, the driving tube is arranged perpendicular to the branch tube, both ends of the driving tube are connected to the branch tube and the moving tube respectively, and the sliding direction of the moving tube is consistent with the direction of the nozzle outlet.

[0012] Furthermore, a blocking ring is provided at the front end of the movable tube, and the inner diameter of the blocking ring is matched with the outer diameter of the driving tube, so as to facilitate the restriction of the oil and ensure that the oil can push the movable tube to move. A compression spring is provided on the driving tube between the branch pipe and the blocking ring to facilitate the resetting of the movable tube.

[0013] Furthermore, the scraping member is a scraper or a tension spring, and the bottom of the scraper is serrated, which improves the scraping effect on oil stains.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structural design. First, a backwash pipe is arranged in the dirty oil tank, wherein multiple branch pipes are evenly arranged on the bottom of the dirty oil tank, and each branch pipe is provided with multiple nozzles. The backwash pipe is supplied with high-pressure oil by a filter pump, and the high-pressure oil is sprayed out at high speed through the nozzle, thereby overturning the oil on the bottom of the dirty oil tank and preventing it from being deposited on the bottom. The overturned oil is sucked away by the oil filter and filtered according to the normal filtering process, thereby realizing the cleaning of the dirty oil tank.

[0016] On the basis of flushing over the oil stains with the nozzle, the utility model also arranges a scraping assembly on the branch pipe to further improve the cleaning effect, wherein the driving pipe is connected with the branch pipe, and a moving pipe is elastically and slidably connected to the outside of the driving pipe. The high-pressure oil is injected into the moving pipe after passing through the driving pipe, and the moving pipe is pushed to move, thereby driving the scraping member to move along the bottom surface of the dirty oil tank to scrape the oil stains on the bottom surface.

[0017] The utility model can effectively clean the oil stains by combining the nozzle flushing and scraping parts to scrape the oil stains, thereby reducing the deposition of oil stains. The entire cleaning operation does not require manual entry into the dirty oil tank, thereby avoiding manual labor in a dangerous environment, reducing the labor intensity of workers, saving time and effort. At the same time, backwashing cleaning is performed during roller replacement or maintenance, and time does not need to be taken up separately for cleaning, thereby improving production efficiency and reducing downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a rolling oil filtration flow chart.

[0019] Figure 2 It is a front view of a backwashing device for a dirty oil tank of a rolling mill according to the utility model.

[0020] Figure 3 It is a top view of a backwashing device for a dirty oil tank of a rolling mill according to the utility model.

[0021] Figure 4 The utility model is a rolling mill dirty oil tank backwashing device Figure 3 Enlarged view of the compression spring at point A in the middle.

[0022] Figure 5 It is a cross-sectional view of a driving component of a backwashing device for a dirty oil tank of a rolling mill according to the utility model.

[0023] The numbers in the attached drawings are: 1 backwash pipe, 101 main pipe, 102 branch pipe, 2 nozzle, 3 driving part, 31 driving pipe, 32 moving pipe, 4 scraper, 5 blocking ring, 6 compression spring, 7 pressure relief hole, 8 cleaning area, 9 rolling mill, 10 dirty oil tank, 11 static oil tank, 12 oil filter, 13 fire gate valve. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0025] like Figure 2~Figure 5 As shown, the rolling mill dirty oil tank backwashing device includes a filter pump, a backwashing pipe 1 and a scraper assembly. The inlet and outlet of the filter pump are respectively connected to the dirty oil tank 10 and the backwashing pipe 1, so that the oil in the dirty oil tank 10 is transported to the backwashing pipe 1 at high pressure. The filter pump is not shown in the figure.

[0026] Here, the filter pump can be added separately, or it can be one of the multiple filter pumps used in the process of transporting the oil from the dirty oil tank 10 to the oil filter, that is, the filter pump in the existing production line can be used and modified so that its outlet is no longer connected to the oil filter but connected to the backwash pipe 1. The pressure and displacement of the filter pump can flush the oil on the bottom of the dirty oil tank 10 and prevent it from being deposited.

[0027] The backwash pipe 1 can wash the grease on the bottom of the dirty oil tank 10. The backwash pipe 1 includes a main pipe 101 and a branch pipe 102 connected front to back. The head end of the main pipe 101 is connected to the filter pump, and the end of the main pipe 101 is connected in parallel with at least two branch pipes 102. Specifically, the end of the main pipe 101 extends into the dirty oil tank 10 to connect with multiple branch pipes 102. Here, the number of branch pipes 102 is two, and the two branch pipes 102 are arranged at intervals on the bottom of the dirty oil tank 10. The two branch pipes 102 evenly divide the bottom of the dirty oil tank 10 into two cleaning areas 8, so as to clean the grease in different areas.

[0028] The end of each branch pipe 102 is closed to prevent oil from flowing out of the end of the branch pipe 102. Multiple nozzles 2 are arranged at intervals on the branch pipe 102, and the outlets of the nozzles 2 face the bottom surface of the dirty oil tank 10. High-pressure oil is sprayed out from the nozzles 2 in the branch pipe 102. The nozzles 2 here can be fan-shaped nozzles 2 to ensure a uniform cleaning effect.

[0029] On the basis of the cleaning by the nozzle 2, a scraping assembly is provided on each branch pipe 102, that is, there is a scraping assembly corresponding to each cleaning area 8. In a cleaning area 8, not only the grease in the area can be flushed by the nozzle 2, but also the grease can be cleaned by the scraping assembly, and the double treatment measures can improve the cleaning effect of the grease.

[0030] The scraping assembly includes at least two groups of driving members 3 and a scraping member 4 arranged between two adjacent groups of driving members 3. Here, the number of driving members 3 is evenly arranged in three groups, and each group of driving members 3 includes a driving tube 31 and a moving tube 32. The driving tube 31 has openings at both ends, and the driving tube 31 is arranged perpendicular to the branch pipe 102. The driving tube 31 is connected to the branch pipe 102, and the driving tube 31 is elastically slidably connected with the moving tube 32. The moving tube 32 is sleeved on the driving tube 31, and the length of the moving tube 32 is less than that of the driving tube 31. After the moving tube 32 is installed, the two ends of the driving tube 31 are connected to the branch pipe 102 and the moving tube 32 respectively, and the sliding direction of the moving tube 32 is consistent with the outlet direction of the nozzle 2.

[0031] After the movable tube 32 and the driving tube 31 are connected and installed, they are similar to a telescopic tube. The driving tube 31 is the fixed part of the telescopic tube, and the movable tube 32 is the movable part of the telescopic tube. There is a gap between the inner diameter of the movable tube 32 and the outer diameter of the driving tube 31. The adjustment of the telescopic tube, that is, the movement of the movable tube 32 is controlled by the high-pressure oil sprayed through the driving tube 31. In order to realize the movement of the movable tube 32, both ends of the movable tube 32 are closed, and a hole is opened at the front end of the movable tube 32 for the driving tube 31 to penetrate.

[0032] It should be noted that a blocking ring 5 is provided at the front end of the movable tube 32, and the inner diameter of the blocking ring 5 is matched with the outer diameter of the driving tube 31, so that the oil sprayed through the driving tube 31 is difficult to flow out, and the oil will push the movable tube 32 to move forward, which is equivalent to increasing the length of the telescopic tube.

[0033] After the supply of high-pressure oil is stopped, in order to achieve the retraction of the telescopic tube, that is, the retreat of the moving tube 32, a compression spring 6 is arranged on the driving tube 31 between the branch tube 102 and the blocking ring 5. The compression spring 6 is sleeved on the driving tube 31, and the two ends of the compression spring 6 are respectively fixed to the branch tube 102 and the blocking ring 5. Therefore, when the moving tube 32 moves forward and backward, the compression spring 6 will produce corresponding expansion and contraction changes.

[0034] The scraper 4 is arranged on the moving tubes 32 of the two adjacent groups of driving members 3, and the scraper 4 is kept parallel to the branch pipe 102. During the movement of the moving tube 32, the moving tube 32 will drive the scraper 4 to move together, and the scraper 4 can be a kind of scraper or a tension spring, and the bottom of the scraper is serrated, and the scraper 4 is a tension spring. The scraper 4 can clean the grease and assist the flushing operation of the nozzle 2.

[0035] The principle of the utility model is: during the rolling mill roll replacement or overhaul, the oil stains in the dirty oil tank 10 are cleaned to avoid taking up time for cleaning separately. First, the filter pump connected to the backwash pipe 1 is operated to transport the oil in the dirty oil tank 10 to the backwash pipe 1 at high pressure, and then the high pressure oil is output after passing through the nozzle 2, so as to flush up the oil stains deposited on the bottom of the dirty oil tank 10. At the same time, the high-pressure oil also enters the moving pipe 32 through the driving pipe 31, pushing the moving pipe 32 to move, and then the scraper 4 moves to scrape the oil stains, which can facilitate the flushing of the nozzle 2 and improve the flushing effect.

[0036] In the above process of flushing the oil, multiple filter pumps connected to the oil filter are also running at the same time. The oil flushed in the dirty oil tank 10 is pumped out by multiple filter pumps and transported to the oil filter for filtration, thereby avoiding manual cleaning operations, reducing the safety hazards of sludge deposition cleaning, improving production efficiency, and saving manpower and time.

[0037] In order to optimize the product structure and realize the pressure relief of the oil in the moving tube 32, a pressure relief hole 7 is provided on the front end side wall of the moving tube 32. After the moving tube 32 moves a certain distance, the oil is sprayed out from the pressure relief hole 7, thereby preventing the oil inside the moving tube 32 from always being in a high-pressure state and preventing the compression spring 6 from being over-stretched.

[0038] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. The rolling mill dirty oil tank backwashing device is characterized by: It comprises a filter pump, a backwash pipe (1) and a scraper assembly, wherein the filter pump inlet and outlet are respectively connected to a dirty oil tank (10) and the backwash pipe (1), the backwash pipe (1) comprises a main pipe (101) and a branch pipe (102) connected front to back, the main pipe (101) having at least two branch pipes (102) connected in parallel at the end thereof, and the two branch pipes (102) are arranged at intervals on the bottom surface of the dirty oil tank (10); The end of each branch pipe (102) is closed, a plurality of nozzles (2) are arranged at intervals on the branch pipe (102), the outlets of the nozzles (2) face the bottom surface of the dirty oil tank (10), and each branch pipe (102) is provided with a scraping assembly, the scraping assembly comprising at least two groups of driving members (3) and a scraping member (4) arranged between two adjacent groups of driving members (3); The driving member (3) comprises a driving tube (31) and a moving tube (32); the driving tube (31) is connected to the branch tube (102); the moving tube (32) is elastically slidably connected to the driving tube (31); both ends of the moving tube (32) are closed; a hole is opened at the front end of the moving tube (32) for the driving tube (31) to pass through; and the scraping member (4) is provided on the moving tubes (32) of two adjacent groups of driving members (3).

2. The rolling mill dirty oil tank backwashing device according to claim 1 is characterized in that: The end of the main pipe (101) extends into the dirty oil tank (10) to be connected to a plurality of branch pipes (102); the head end of the main pipe (101) is connected to the filter pump; the plurality of branch pipes (102) evenly divide the bottom surface of the dirty oil tank (10) into a plurality of cleaning areas (8); each cleaning area (8) corresponds to one of the scraping components.

3. The rolling mill dirty oil tank backwashing device according to claim 1 is characterized in that: The driving tube (31) has openings at both ends. The driving tube (31) is arranged perpendicular to the branch tube (102). The two ends of the driving tube (31) are respectively connected to the branch tube (102) and the moving tube (32). The sliding direction of the moving tube (32) is consistent with the outlet direction of the nozzle (2).

4. The rolling mill dirty oil tank backwashing device according to claim 3 is characterized in that: A blocking ring (5) is provided at the front end of the moving tube (32), the inner diameter of the blocking ring (5) is matched to the outer diameter of the driving tube (31), and a compression spring (6) is provided on the driving tube (31) between the branch tube (102) and the blocking ring (5).

5. The rolling mill dirty oil tank backwashing device according to claim 1 is characterized in that: The scraping member (4) is a scraper or a tension spring, and the bottom of the scraper is serrated.

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