New material rolling oil cleanliness detection device
By designing a new material rolling oil cleanliness detection device, the main oil path and bypass filter channels are automatically switched, and combined with mechanical structure and glass fiber filter cartridges, the problem of pollutant accumulation in the rolling mill oil supply pipeline is solved, and the stable oil supply and automatic cleaning of the rolling mill system is achieved, ensuring the normal operation of the rolling mill.
Patent Information
- Application Number
- CN202510611423.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2025-08-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the rolling mill oil supply pipeline lacks the cleanliness detection of rolling oil, resulting in pollutants accumulation and blocking the filter element, reducing the oil path, causing insufficient oil supply of the rolling mill lubrication/cooling system, resulting in overheating and shutdown of the rolling roll.
A new material rolling oil cleanliness detection device is designed, including valve body and bypass control components, and the main oil circuit and bypass filter channels are automatically switched through pressure differential sensors and mechanical structures, and the contaminated oil is deeply purified with a glass fiber filter cartridge, and the filter barrel and pipeline are automatically cleaned through a backwashing pipe.
It realizes deep purification of polluted oil, automatically switches to the cleaning oil circuit, protects the rolling mill system, reduces assembly difficulty, avoids additional electrical wiring, and ensures the stable operation of the rolling mill.
Smart Images
Figure CN120405051A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of rolling oil cleanliness detection, and specifically relates to a device for detecting the cleanliness of a new material rolling oil. Background Art
[0002] In the prior art, one of the core functions of rolling oil during the operation of a hot tandem mill is to absorb and carry away the heat in the rolling zone through the rolling oil to control the surface temperature distribution of the roll, reduce thermal expansion deformation, ensure the thickness uniformity of the rolled material, and the rolling oil forms a continuous lubricating film between the roll and the metal sheet, reducing the friction resistance while reducing the direct contact frequency between the roll and the metal, and extending the service life of the roll.
[0003] However, in the prior art, there is no device for detecting the cleanliness of rolling oil in the oil supply pipeline of the rolling mill. This not only accelerates the wear of friction pairs such as oil pumps, bearings, and hydraulic valves by particulate contaminants (such as metal chips and oxides) in the rolling oil, resulting in a shortened service life of the components, but also the accumulation of contaminants will clog the filter element and reduce the effective passage diameter of the oil circuit, causing a reduction in the cross-sectional area of the pipeline, and further leading to insufficient oil supply in the lubrication / cooling system of the rolling mill. For example, when the cleanliness of the oil in the hot tandem mill exceeds the standard, it will cause a reduction in the main oil circuit flow rate, and further lead to overheating shutdown of the roll. Summary of the Invention
[0004] The purpose of the present invention is to provide a device for detecting the cleanliness of a new material rolling oil to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the present invention provides the following technical solutions: A device for detecting the cleanliness of a new material rolling oil includes a valve body and a bypass control component. The side end of the valve body is connected to the bypass control component. The bypass control component includes a bypass pipe connected to the side end of the valve body. The middle of the bypass pipe is radially and arrayedly provided with communication holes, and a retaining ring is axially slidably installed outside the bypass pipe. The retaining ring covers the communication holes, and a connecting pin is fixedly installed at the side end of the retaining ring. A V-shaped swing arm is rotatably installed inside the concave opening at the front end of the bypass pipe, and one side of the V-shaped swing arm is hinged to the connecting pin.
[0006] Further, a sedimentation chamber is provided in the middle of the valve body, and a slag discharge pipe controlled by an electromagnetic valve for on-off connection is connected to the side end of the sedimentation chamber.
[0007] Further, a bushing is fixedly installed in the middle of the sedimentation chamber, and a valve rod is slidably installed inside the bushing.
[0008] Further, a valve core is fixedly installed in the middle of the valve rod, and the valve core is in sealing cooperation with the step at the bottom opening of the sedimentation chamber. A spring is sleeved at the joint of the valve rod and the valve core, and the valve core is elastically connected to the step on the inner wall of the bushing through the spring.
[0009] Further, a scraper with a hollow annular structure is fixedly installed at the top of the valve stem, a push rod is fixedly installed at the bottom of the valve stem, and the end pin of the push rod slides in a strip groove on the other side of the V-shaped swing arm.
[0010] Further, the bottom of the valve body is communicated with a main oil pipe, and the main oil pipe is communicated with the bottom oil outlet end of the rolling mill hydraulic oil tank. One side of the top of the rolling mill hydraulic oil tank is communicated with a liquid supplement pipe, and the other side of the top of the rolling mill hydraulic oil tank is communicated with a bypass oil pipe.
[0011] Further, a main oil circuit filter barrel is arranged in the top opening of the deposition cavity. The polluted side inside the main oil circuit filter barrel is closely attached to the scraper, and a differential pressure sensor is communicated between the polluted side inside the main oil circuit filter barrel and the clean side outside.
[0012] Further, a backwash pipe is arranged outside the clean side of the main oil circuit filter barrel. The backwash pipe flushes along the radial direction of the main oil circuit filter barrel, so that particulate impurities are peeled off from the polluted side inside and discharged through the slag discharge pipe on the side of the bottom end of the deposition cavity.
[0013] Further, a bypass filtration assembly is connected between the bypass oil pipe and the bypass pipe. The bypass filtration assembly includes a connecting pipe bolted to the rear flange of the bypass pipe, and a guide platform protrudes from the inner wall of the top end of the connecting pipe.
[0014] Further, the bypass filtration assembly further includes a sleeve inclinedly arranged on the inner wall of the bottom end of the connecting pipe, and a fiberglass filter material barrel is threadedly fixed inside the threaded port at the bottom end of the sleeve.
[0015] Beneficial effects; 1. When the main oil circuit of the present invention is disconnected, the linkage opening of the communication holes on the bypass pipe enables the rolling oil with excessive cleanliness in the valve body to automatically switch from the main oil circuit to the bypass filtration channel. When passing through the fiberglass filter material barrel in the connecting pipe, the oil liquid is deeply purified and then flows back to the rolling mill hydraulic oil tank through the bypass oil pipe. During the process of the polluted oil liquid passing through the bypass filtration channel, the main oil circuit in the deposition cavity is cut off. The differential pressure sensor senses the differential pressure between the polluted side inside the filter barrel and the clean side outside. The PLC controls the opening of the slag discharge pipe on the side of the deposition cavity, and the backwash pipe flushes along the radial direction of the main oil circuit filter barrel, so that particulate impurities are peeled off from the polluted side inside and discharged through the slag discharge pipe on the side of the bottom end of the deposition cavity. Cooperating with the scraping of the scraper inside the polluted side of the main oil circuit filter barrel in the early stage, the automatic cleaning of the main oil circuit filter barrel and the inner wall of the pipeline is realized, ensuring the filtration performance of the main oil circuit filter barrel after the polluted oil liquid passes the filtration standard and automatically switches back to the main oil circuit in the later stage.
[0016] 2. This application has a fully mechanical structure. When the cleanliness of the rolling oil in the valve body exceeds the standard, resulting in a decrease in flow rate and pressure, the main oil circuit is disconnected and the medium flow rate is automatically switched to the bypass filtration channel to achieve deep purification of the contaminated oil. After the contaminated oil is restored to cleanliness through deep purification, as the medium flow rate in the valve body returns to normal, the valve core will also automatically open to restore the main oil circuit. This application combines the correlation between the change in the cleanliness of the rolling oil and the flow rate fluctuation in the valve body, and controls the valve through the flow rate and pressure of the medium. Since no additional particle counting sensor is required, it can save electrical wiring and reduce the assembly difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 It is a schematic three-dimensional structure diagram of the valve of the present invention; Figure 3 It is a schematic diagram of the main oil circuit opening state of the valve of the present invention; Figure 4 It is a schematic diagram of the bypass oil circuit opening state of the valve of the present invention; Figure 5 It is a schematic diagram of the valve stem structure of the present invention; Figure 6 It is a schematic diagram of the external structure of the bypass control assembly of the present invention; Figure 7 It is a schematic sectional view of the bypass control assembly of the present invention; Figure 8 It is a schematic diagram of the bypass filtration assembly structure of the present invention.
[0018] In the figure: 1. Valve body; 2. Bypass control assembly; 201. Bypass pipe; 202. Communication hole; 203. Retaining ring; 204. Connecting pin; 205. V-shaped swing arm; 3. Deposition chamber; 4. Slag discharge pipe; 5. Bush; 6. Valve stem; 7. Valve core; 8. Spring; 9. Scraper; 10. Thumb rod; 11. Main oil pipe; 12. Rolling mill hydraulic oil tank; 13. Make-up pipe; 14. Bypass oil pipe; 15. Main oil circuit filter barrel; 16. Differential pressure sensor; 17. Backwash pipe; 18. Bypass filtration assembly; 1801. Connecting pipe; 1802. Guide platform; 1803. Sleeve; 1804. Glass fiber filter material cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention. Please refer to Figures 6 to 7The new material rolling oil cleanliness detection device provided by the present invention includes a valve body 1 and a bypass control component 2. The side end of the valve body 1 is connected to the bypass control component 2. The bypass control component 2 includes a bypass pipe 201 connected to the side end of the valve body 1. A connecting hole 202 is opened in a radial array in the middle part of the bypass pipe 201, and a retaining ring 203 is axially slidably installed on the outside of the bypass pipe 201. The retaining ring 203 covers the connecting hole 202, and a connecting pin 204 is fixedly installed on the side end of the retaining ring 203. A V-shaped swing arm 205 is rotatably installed inside the recess at the front end of the bypass pipe 201, and one side of the V-shaped swing arm 205 is hinged to the connecting pin 204.
[0020] The specific operation is as follows: when the valve core 7 descends to block the main oil circuit, the top rod 10 fixed to the bottom of the valve stem 6 slides in the groove on one side of the V-shaped swing arm 205, so that the V-shaped swing arm 205 rotates in the front end recess of the bypass pipe 201, and the retaining ring 203 is pulled by the connecting pin 204 hinged on the other side of the V-shaped swing arm 205, so that the retaining ring 203 opens the connecting hole 202 that was originally covered and blocked when it slides axially along the bypass pipe 201, thereby realizing the linkage opening of the connecting hole 202 on the bypass pipe 201 when the main oil circuit is disconnected, so that the rolling oil with excessive cleanliness in the valve body 1 is automatically switched from the main oil circuit to the bypass filter channel.
[0021] See also Figures 1 to 5 A deposition chamber 3 is provided in the middle of the valve body 1, and the side end of the deposition chamber 3 is connected to a slag discharge pipe 4 which is controlled by a solenoid valve. A shaft sleeve 5 is fixedly installed in the middle of the deposition chamber 3, and a valve stem 6 is slidably installed inside the shaft sleeve 5. A valve core 7 is fixedly installed in the middle of the valve stem 6, and the valve core 7 is sealed with the step at the bottom opening of the deposition chamber 3. A spring 8 is sleeved at the joint of the valve stem 6 and the valve core 7, and the valve core 7 is elastically connected to the step on the inner wall of the shaft sleeve 5 through the spring 8. A scraper 9 with a hollow ring structure is fixedly installed on the top of the valve stem 6, and a push rod 10 is fixedly installed on the bottom of the valve stem 6, and the shaft pin at the end of the push rod 10 slides in the groove on the other side of the V-shaped swing arm 205.
[0022] The specific operation is as follows: when the cleanliness of the rolling oil in the main oil pipe 11 is within the design threshold, the medium flow in the valve body 1 is normal. At this time, the fluid pressure is greater than the elastic force of the spring 8, causing the valve core 7 to lift upward and open the bottom inlet of the sedimentation chamber 3. The fluid flows normally through the main oil filter barrel 15 to intercept particles larger than 25μm, protecting the core components of the pump and valve; When the concentration of rolling oil particles in the main oil pipe 11 exceeds the standard, the particulate matter in the rolling oil will accumulate on the inner wall of the pollution side inside the main oil circuit filter barrel 15 and the inner wall of the pipeline, resulting in a reduction in the cross-sectional area of the flow channel and an increase in the flow resistance. Accordingly, the overall flow rate inside the valve body 1 will be inhibited. At this time, the fluid pressure is less than the elastic force of the spring 8, causing the valve core 7 to descend and cooperate with the step at the bottom opening of the sedimentation chamber 3 to achieve sealing. During the process of the valve core 7 descending to block the main oil circuit passage, the scraper 9 at the top of the valve rod 6 scrapes inside the pollution side inside the main oil circuit filter barrel 15, so that the particles adhering to the pollution side inside the main oil circuit filter barrel 15 and causing blockage are physically peeled off.
[0023] It should be noted that this application is a completely mechanical structure. When the flow rate and pressure decrease due to the excessive cleanliness of the rolling oil inside the valve body 1, the main oil circuit is disconnected and the medium flow rate is automatically switched to the bypass filtration channel to achieve deep purification of the contaminated oil. After the contaminated oil is restored to cleanliness through deep purification, as the medium flow rate inside the valve body 1 returns to normal, the valve core 7 will also automatically open to restore the main oil circuit passage. This application combines the correlation between the change in the cleanliness of the rolling oil and the flow rate fluctuation inside the valve body 1, and controls the valve through the flow rate and pressure of the medium. Since no additional particle counting sensor is required, electrical wiring can be saved and the assembly difficulty can be reduced.
[0024] Please refer to Figures 3 to 8 , the bottom of the valve body 1 is connected to the main oil pipe 11, and the main oil pipe 11 is connected to the bottom oil outlet end of the rolling mill hydraulic oil tank 12. One side of the top of the rolling mill hydraulic oil tank 12 is connected to a liquid supplement pipe 13, and the other side of the top of the rolling mill hydraulic oil tank 12 is connected to a bypass oil pipe 14. The top opening of the sedimentation chamber 3 is provided with a main oil circuit filter barrel 15, and the inner pollution side of the main oil circuit filter barrel 15 is closely attached to the scraper 9. A differential pressure sensor 16 is connected between the inner pollution side and the outer clean side of the main oil circuit filter barrel 15. An anti-flushing pipe 17 is arranged outside the clean side of the main oil circuit filter barrel 15, and the anti-flushing pipe 17 flushes radially along the main oil circuit filter barrel 15 so that the particulate impurities are peeled off from the inner pollution side and discharged through the slag discharge pipe 4 on the side of the bottom end of the sedimentation chamber 3. A bypass filtration component 18 is connected between the bypass oil pipe 14 and the bypass pipe 201. The bypass filtration component 18 includes a connecting pipe 1801 bolted to the rear flange of the bypass pipe 201, and a guide platform 1802 protrudes from the inner wall of the top end of the connecting pipe 1801. The bypass filtration component 18 further includes a sleeve 1803 inclinedly arranged on the inner wall of the bottom end of the connecting pipe 1801, and a fiberglass filter material cylinder 1804 is threadedly fixed inside the threaded port at the bottom end of the sleeve 1803.
[0025] When passing through the glass fiber filter barrel in the connecting pipe 1801, the oil is deeply purified and then returned to the rolling mill hydraulic oil tank 12 through the bypass oil pipe 14. The threaded connection between the glass fiber filter barrel and the sleeve 1803 facilitates the disassembly and cleaning of the filter material after the main oil circuit is restored. When the contaminated oil passes through the bypass filter channel, the main oil circuit in the sedimentation chamber 3 is cut off. The differential pressure sensor 16 senses the pressure difference between the contaminated side inside the filter barrel and the clean side outside. The PLC controls the slag discharge pipe 4 on the side of the sedimentation chamber 3 to open, and the backwash pipe 17 flushes radially along the main oil circuit filter barrel 15 so that particulate impurities are peeled off from the internal contaminated side and discharged from the slag discharge pipe 4 on the bottom side of the sedimentation chamber 3. Combined with the scraper 9 located on the contaminated side of the main oil circuit filter barrel 15 in the early stage, the main oil circuit filter barrel 15 and the inner wall of the pipeline are automatically cleaned, ensuring the filtering performance of the main oil circuit filter barrel 15 after the contaminated oil is filtered to meet the standards and automatically switched back to the main oil circuit.
[0026] In summary, when using the new material rolling oil cleanliness detection device: First, when the cleanliness of the rolling oil in the main oil pipe 11 is within the design threshold, the medium flow in the valve body 1 is normal. At this time, the fluid pressure is greater than the elastic force of the spring 8, which causes the valve core 7 to lift up and open the bottom inlet of the sedimentation chamber 3. The fluid normally passes through the main oil filter barrel 15 to intercept particles larger than 25μm, protecting the core components of the pump valve. However, when the rolling oil particle concentration in the main oil pipe 11 exceeds the standard, the particles in the rolling oil will accumulate on the contaminated side of the main oil filter barrel 15 and on the inner wall of the pipeline, resulting in a decrease in the flow channel cross-sectional area and an increase in flow resistance. Correspondingly, the overall flow in the valve body 1 will be suppressed. At this time, the fluid pressure is less than the elastic force of the spring 8, causing the valve core 7 to drop and The valve core 7 is used to seal the valve body 1. ... Secondly, when the valve core 7 descends to block the main oil passage, the top rod 10 fixed to the bottom of the valve stem 6 slides in the groove on one side of the V-shaped swing arm 205, so that the V-shaped swing arm 205 rotates in the notch at the front end of the bypass pipe 201, and the connecting pin 204 hinged on the other side of the V-shaped swing arm 205 pulls the retaining ring 203, so that the retaining ring 203 opens the connecting hole 202 that was originally covered when it slides axially along the bypass pipe 201. As a result, when the main oil passage is disconnected, the connecting hole 202 on the bypass pipe 201 is opened in a linked manner, so that the rolling oil with excessive cleanliness in the valve body 1 is automatically switched from the main oil passage to the bypass filter channel, and the oil is deeply purified when passing through the glass fiber filter material barrel in the connecting pipe 1801, and then returns to the rolling mill hydraulic oil tank 12 through the bypass oil pipe 14. The threaded connection between the glass fiber filter material barrel and the sleeve 1803 is convenient for disassembly and cleaning of the filter material after the main oil passage is restored. Finally, when the valve core 7 descends to block the main oil passage, the scraper 9 on the top of the valve stem 6 is located inside the contaminated side of the main oil filter barrel 15 and scrapes it, so that the particles attached to the contaminated side of the main oil filter barrel 15 that cause blockage are physically peeled off. In the process of the contaminated oil passing through the bypass filter channel, the main oil passage in the sedimentation chamber 3 is cut off, and the pressure difference sensor 16 senses the pressure difference between the contaminated side inside the filter barrel and the clean side outside. The PLC controls the slag discharge pipe 4 on the side of the sedimentation chamber 3 to open, and the backwash pipe 17 flushes radially along the main oil filter barrel 15 so that particulate impurities are peeled off from the internal contaminated side and discharged from the slag discharge pipe 4 on the bottom side of the sedimentation chamber 3. Combined with the scraper 9 on the contaminated side of the main oil filter barrel 15 in the early stage, the main oil filter barrel 15 and the inner wall of the pipeline are automatically cleaned, ensuring the filtering performance of the main oil filter barrel 15 after the later contaminated oil is filtered to meet the standards and automatically switches back to the main oil circuit.
[0027] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.
[0028] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.
Claims
1. A device for detecting the cleanliness of a new material rolling oil, characterized in that It includes a valve body and a bypass control component. The side end of the valve body is connected to the bypass control component. The bypass control component includes a bypass pipe connected to the side end of the valve body. The middle of the bypass pipe is radially and arrayedly provided with communication holes, and a retaining ring is axially slidably installed outside the bypass pipe. The retaining ring covers the communication holes, and a connecting pin is fixedly installed on the side end of the retaining ring. A V-shaped swing arm is rotatably installed inside the notch at the front end of the bypass pipe, and one side of the V-shaped swing arm is hinged to the connecting pin.
2. The cleanliness detection device for a new material rolling oil according to claim 1, characterized in that, A sedimentation chamber is formed in the middle of the valve body, and a slag discharge pipe controlled by an electromagnetic valve for on-off connection is connected to the side end of the sedimentation chamber.
3. The cleanliness detection device for a new material rolling oil according to claim 2, characterized in that, A bushing is fixedly installed in the middle of the sedimentation chamber, and a valve rod is slidably installed inside the bushing.
4. A device for detecting the cleanliness of a new material rolling oil according to claim 3, characterized in that, A valve core is fixedly installed in the middle of the valve rod, and the valve core is in sealing fit with the step at the bottom opening of the sedimentation chamber. A spring is sleeved at the joint of the valve rod and the valve core, and the valve core is elastically connected to the step on the inner wall of the bushing through the spring.
5. The cleanliness detection device for a new material rolling oil according to claim 4, characterized in that, A scraper in the form of a hollow ring structure is fixedly installed at the top of the valve rod, and a push rod is fixedly installed at the bottom of the valve rod. The end shaft pin of the push rod slides in the slot on the other side of the V-shaped swing arm.
6. The cleanliness detection device for a new material rolling oil according to claim 5, wherein, The bottom of the valve body is connected to a main oil pipe, and the main oil pipe is connected to the bottom oil outlet end of the rolling mill hydraulic oil tank. A liquid supplement pipe is connected to one side of the top of the rolling mill hydraulic oil tank, and a bypass oil pipe is connected to the other side of the top of the rolling mill hydraulic oil tank.
7. The cleanliness detection device for a new material rolling oil according to claim 6, wherein, A main oil path filter barrel is arranged inside the top opening of the sedimentation chamber. The polluted side inside the main oil path filter barrel is in close contact with the scraper, and a differential pressure sensor is connected between the polluted side inside the main oil path filter barrel and the clean side outside.
8. A device for detecting the cleanliness of a new material rolling oil according to claim 7, characterized in that, An anti-flushing pipe is arranged outside the clean side of the main oil path filter barrel. The anti-flushing pipe flushes radially along the main oil path filter barrel, so that the particulate impurities are peeled off from the polluted side inside and discharged through the slag discharge pipe on the side surface of the bottom end of the sedimentation chamber.
9. The cleanliness detection device for a new material rolling oil according to claim 8, characterized in that, A bypass filter assembly is connected between the bypass oil pipe and the bypass pipe. The bypass filter assembly includes a connecting pipe bolted to the rear flange of the bypass pipe, and a guide platform protrudes from the inner wall of the top end of the connecting pipe.
10. The cleanliness detection device for a new material rolling oil according to claim 9, characterized in that, The bypass filter assembly further includes a sleeve obliquely arranged on the inner wall of the bottom end of the connecting pipe, and a fiberglass filter material barrel is threadedly fixed inside the threaded port at the bottom end of the sleeve.