Rolling cooling oil filtering system and filtering process thereof

Abstract

The invention relates to the technical field of fluid mechanics and hydraulic pressure, and discloses a rolling cooling oil filtering system and a filtering technology thereof.The rolling cooling oil filtering system comprises a support, a filter inlet pipeline is fixedly connected to the exterior of the support, a pulse back flushing system is installed outside the filter inlet pipeline, and a plurality of filters are fixedly connected to the exterior of the pulse back flushing system; a valve system is installed outside the filters, a pollution discharge assembly is fixedly connected to the inner wall of the support and comprises a liquid box, the outer portion of the liquid box is fixedly connected to the inner wall of the support, and a pollution discharge opening is fixedly connected to the bottom of the liquid box. According to the invention, a plurality of filters are alternately filtered and cleaned, the cleaned filters do not participate in the filtering work, at the moment, other filters are in the filtering work, after the filtering is completed, the oil liquid is sterilized and then conveyed to the rolling mill, and the filters can be automatically cleaned in a reverse osmosis manner without consumables.

Description

Technical Field

[0001] The present invention relates to the technical fields of fluid mechanics and hydraulic technology, and in particular to a rolling cooling oil filtration system and its filtration process. Background Art

[0002] Rolling cooling oil is a special oil used for cooling and lubrication during the metal rolling process. It can effectively reduce the temperature between the rolled piece and the roll, reduce friction and wear, and improve the rolling efficiency and product quality. During rolling, the oil is easily mixed with metal chips, oxides, etc. Filtration can prevent equipment wear during its recycling, ensure lubrication and cooling effects, and ensure the stability of the rolling process and product quality.

[0003] The rolling cooling oil filtration system in the prior art mainly consists of a filter, a pump, pipelines, and control valves, etc. The filter is used to remove impurities in the oil, the pump provides power to circulate the oil, the pipelines connect various components to transport the oil, and the control valves regulate the oil flow rate and direction to ensure the cleanliness of the oil and the stable operation of the system.

[0004] The traditional filter is placed at the end of the rolling mill and uses paper tape filter cloth for filtration. The filtration accuracy is low, and a lot of impurities are transported to the rolling mill with the oil, causing wear to the rolling machine. The users are the equipment maintenance personnel in the factory or the engineers responsible for production management. The problems they will face are production interruption caused by frequent filter paper replacement, increased maintenance costs, and environmental protection problems in dealing with waste filter paper. Therefore, a rolling cooling oil filtration system is proposed to solve the above problems. Summary of the Invention

[0005] In order to make up for the above deficiencies, the present invention provides a rolling cooling oil filtration system and its filtration process, aiming to improve the problems in the prior art that traditional rolling cooling oil filtration has low accuracy, many impurities resulting in equipment wear, and production interruption, cost increase, and environmental protection problems caused by frequent filter paper replacement faced by maintenance personnel and production managers.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] A rolling cooling oil filtration system includes a bracket. An inlet pipeline of the filter is fixedly connected to the outside of the bracket. A pulse backwashing system is installed outside the inlet pipeline of the filter. A plurality of filters are fixedly connected to the outside of the pulse backwashing system. A valve system is installed outside the plurality of filters. A sewage discharge assembly is fixedly connected to the inner wall of the bracket.

[0008] As a further description of the above technical solution:

[0009] The sewage discharge assembly includes a liquid tank. The outside of the liquid tank is fixedly connected to the inner wall of the bracket. A sewage discharge port is fixedly connected to the bottom of the liquid tank.

[0010] As a further description of the above technical solution:

[0011] An ultraviolet sterilizer is installed outside the bracket, and a filter outlet pipeline is installed outside the ultraviolet sterilizer.

[0012] As a further description of the above technical solution:

[0013] A bypass pipeline is installed outside the filter outlet pipeline, an anti-flushing water pump is installed outside the ultraviolet sterilizer, and the other end of the anti-flushing water pump is fixedly connected to the outside of the filter outlet pipeline.

[0014] The filtering process of the rolling cooling oil filtering system includes the following steps:

[0015] Step 1: When the filter element is blocked or the set pressure difference is exceeded, one filter is closed for backwashing at this time, and the concentrated liquid for backwashing is discharged into the water tank. During backwashing, this filter does not participate in the filtering work. At this time, several other filters are in the filtering work. After the cleaning is completed, this filter is opened to resume filtering use. At this time, the second filter is closed for cleaning, and multiple filters are alternately filtered and cleaned in this way;

[0016] Step 2: When all the filters are cleaned, the concentrated liquid in the water tank is suction-filtered by a vacuum negative pressure or a centrifuge, and then the concentrated liquid solid is separated;

[0017] Step 3: When all the filters are filtered, the oil liquid is disinfected and sterilized by an ultraviolet sterilizer.

[0018] As a further description of the above technical solution:

[0019] In Step 1, the set pressure difference is 0.15 - 0.2 MPa.

[0020] As a further description of the above technical solution:

[0021] Step 2 is completed by automatic control to achieve online large-flow oil filtering.

[0022] The present invention has the following beneficial effects:

[0023] In the present invention, multiple filters are alternately filtered and cleaned. The filter being cleaned does not participate in the filtering work. At this time, several other filters are in the filtering work. After the filtering is completed, the oil liquid is sterilized and then transported to the rolling mill. The filter can be automatically reverse osmosis cleaned without consumables, and the wear of each part of the rolling mill is greatly reduced, increasing the service life of each component of the rolling mill. Description of the Drawings

[0024] Figure 1The front view of a rolling cooling oil filtration system proposed by the present invention;

[0025] Figure 2 The side view of a rolling cooling oil filtration system proposed by the present invention;

[0026] Figure 3 The three-dimensional view of a rolling cooling oil filtration system proposed by the present invention;

[0027] Figure 4 The top view of a rolling cooling oil filtration system proposed by the present invention.

[0028] Legend:

[0029] 1. Filter outlet pipeline; 2. Liquid tank; 3. Filter inlet pipeline; 4. Filter; 5. Drain port; 6. Backwash water pump; 7. Ultraviolet sterilizer; 8. Bypass pipeline; 9. Valve system; 10. Pulse backflush system. Specific implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0031] Refer to Figure 2 and Figure 4 , an embodiment provided by the present invention: An embodiment provided by the present invention: A rolling cooling oil filtration system includes a bracket, and a filter inlet pipeline 3 is fixedly connected to the outside of the bracket. The filter inlet pipeline 3 is made of corrosion-resistant metal material to ensure that it will not rust or corrode during long-term contact with the oil, affecting the oil quality. A pulse backflush system 10 is installed outside the filter inlet pipeline 3. The pulse backflush system can be automatically started at a set time interval, and the impurities on the surface of the filter 4 are removed by instant high-pressure gas pulses, restoring the permeability of the filter 4 and maintaining the filtration efficiency. A plurality of filters 4 are fixedly connected to the outside of the pulse backflush system 10. These filters 4 adopt high-precision filter mesh materials and can effectively intercept the fine particles and impurities in the oil to ensure that the cleanliness of the oil reaches the predetermined standard. A valve system 9 is installed outside the plurality of filters 4. The valve system 9 is made of durable stainless steel material and can withstand frequent opening and closing operations without damage, ensuring the sealing and stability of the system.

[0032] Refer to Figure 1 and Figure 3, a sewage discharge component is fixedly connected to the inner wall of the bracket. The sewage discharge component includes a liquid tank 2, the outside of the liquid tank 2 is fixedly connected to the inner wall of the bracket, and a sewage discharge port 5 is fixedly connected to the bottom of the liquid tank 2. The liquid tank 2 is used to collect the concentrated liquid discharged during the backwashing process and regularly discharge it out of the system through the sewage discharge port 5 to prevent dirt from accumulating in the system. An ultraviolet disinfection device 7 is installed outside the bracket, and a filter outlet pipeline 1 is installed outside the ultraviolet disinfection device 7. The ultraviolet disinfection device 7 uses ultraviolet light of a specific wavelength to perform deep disinfection treatment on the filtered oil liquid, effectively eliminating bacteria and microorganisms in the oil liquid, and improving the service life and safety of the oil liquid. A bypass pipeline 8 is installed outside the filter outlet pipeline 1. When a certain filter 4 is being backwashed, the bypass pipeline 8 can ensure the continuous flow of the oil liquid and does not affect the normal operation of the entire system.

[0033] An anti-washing water pump 6 is installed outside the ultraviolet disinfection device 7, and the other end of the anti-washing water pump 6 is fixedly connected to the outside of the filter outlet pipeline 1. The anti-washing water pump 6 provides sufficient pressure and flow rate to push the cleaning liquid reversely through the filter 4, helping to quickly and effectively remove the impurities blocked on the filter 4. The entire system coordinates the working sequence and time points of each part through an automatic control unit to achieve a fully automatic continuous filtration, backwashing, sewage discharge, and disinfection process. This intelligent operation mode not only reduces the need for manual intervention but also significantly improves work efficiency and reliability.

[0034] Working principle: This device filters the oil liquid online through multiple filters 4 with a filtration accuracy of 3 microns, and the flow rate can be freely combined and controlled. When the filter element is blocked or the set pressure difference is exceeded, one filter 4 is closed at this time, and the anti-washing water pump 6 is turned on for backwashing. The concentrated liquid from the backwashing is discharged into the liquid tank 2. During the backwashing, this filter 4 does not participate in the filtering work. At this time, several other filters 4 are in the filtering work. After the cleaning is completed, the filter 4 is opened to resume filtering use. At this time, the second filter 4 is closed for cleaning. Multiple filters 4 alternate in filtering and cleaning. After all the filters 4 are cleaned, the concentrated liquid in the liquid tank 2 is filtered by vacuum negative pressure or a centrifuge, and then the solid phase of the concentrated liquid is separated. The entire process is automatically controlled to achieve online large-flow oil liquid filtration.

[0035] After all the filters 4 have completed filtering, the oil liquid passes through the ultraviolet disinfection device 7 for ultraviolet disinfection and sterilization. The rolling oil liquid is easily contaminated by bacteria during use, especially the reproduction of aerobic bacteria and anaerobic bacteria will cause the oil liquid to deteriorate and emit an odor. When the bacteria content in the oil liquid exceeds a certain standard, such as more than 1000 bacteria per milliliter, the oil liquid will quickly deteriorate and emit an odor. This filtration system is equipped with ultraviolet disinfection, which effectively kills bacteria and greatly extends the service life of the oil liquid. Multiple filters 4 are used in combination, with a large filtration area, high filtration accuracy, small resistance, large filtration flow rate, 10 cubic meters to 300 cubic meters, and can be arbitrarily combined.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rolling cooling oil filtration system, comprising a bracket, characterized in that: An inlet pipeline (3) of a filter is fixedly connected to the outside of the support. A pulse backwashing system (10) is installed outside the inlet pipeline (3) of the filter. A plurality of filters (4) are fixedly connected to the outside of the pulse backwashing system (10). A valve system (9) is installed outside the plurality of filters (4). A sewage discharging assembly is fixedly connected to the inner wall of the support.

2. The rolling cooling oil filtration system according to claim 1, characterized in that: The sewage discharging assembly includes a liquid tank (2). The outside of the liquid tank (2) is fixedly connected to the inner wall of the support. A sewage outlet (5) is fixedly connected to the bottom of the liquid tank (2).

3. A rolling cooling oil filtration system according to claim 1, characterized in that: An ultraviolet disinfection device (7) is installed outside the support. An outlet pipeline (1) of the filter is installed outside the ultraviolet disinfection device (7).

4. The rolling cooling oil filtration system according to claim 3, wherein: A bypass pipeline (8) is installed outside the outlet pipeline (1) of the filter. A backwashing water pump (6) is installed outside the ultraviolet disinfection device (7). The other end of the backwashing water pump (6) is fixedly connected to the outside of the outlet pipeline (1) of the filter.

5. The filtering process of the rolling cooling oil filtering system according to claim 1, characterized in that: It includes the following steps: Step 1: When the filter element is blocked or the set pressure difference is exceeded, one filter is closed at this time for backwashing. The concentrated liquid for backwashing is discharged to the water tank. During backwashing, this filter does not participate in the filtering work. At this time, several other filters are in the filtering work. After the cleaning is completed, this filter is opened to resume filtering use. At this time, the second filter is closed for cleaning. The plurality of filters are alternately filtered and cleaned in this way; Step 2: When the cleaning of all filters is completed, the concentrated liquid in the water tank is filtered by vacuum negative pressure or a centrifuge, and then the solid phase of the concentrated liquid is separated; Step 3: When the filtering of all filters is completed, the oil liquid is disinfected by the ultraviolet disinfection device.

6. The filtration process according to claim 5, characterized in that: In Step 1, the set pressure difference is 0.15 - 0.2 MPa.

7. The filtration process according to claim 5, characterized in that: Step 2 is completed by automatic control to achieve online large-flow oil liquid filtering.

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