Novel rolling oil filtering device
By using a three-stage ceramic membrane filter and an automatic switching mechanism, the problem of existing plate filters being unable to effectively remove submicron-level impurities and being prone to clogging is solved, achieving efficient and stable rolling oil filtration, and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-24
AI Technical Summary
Existing plate filters cannot effectively remove submicron-level impurities in rolling oil filtration, leading to product quality defects. They are also prone to clogging, resulting in low filtration efficiency and affecting production continuity and efficiency.
It adopts a three-stage ceramic membrane filter, combined with backwashing self-cleaning function and automatic switching mechanism to achieve multi-stage and continuous filtration. The first to third stages gradually remove impurities of different particle sizes, and automatically switch to the backup filter when the efficiency decreases, ensuring the continuity and high efficiency of filtration.
It effectively removes fine particulate impurities, improves product quality, extends filter life, reduces maintenance frequency, ensures the stability and efficiency of rolling production, and reduces costs.
Smart Images
Figure CN224024721U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rolling oil filter equipment technical field, especially in a kind of novel rolling oil filter device. BACKGROUND
[0002] In modern aluminum foil rolling industry, rolling oil plays a key role in the smooth progress of rolling process and product quality guarantee. Rolling oil not only provides lubrication between roll and metal strip, reduces friction and wear, but also bears the important responsibility of cooling roll and controlling strip temperature. In this process, rolling oil plate filter is one of the core equipment to ensure the quality of rolling oil.
[0003] The most widely used filtering mode is rolling oil plate filter system. Rolling oil plate filter gradually exposes a series of problems in practical application. With the continuous improvement of modern rolling process requirements for product surface quality and dimensional accuracy, the cleanliness of rolling oil is also increasingly stringent. However, the existing plate filter can basically meet the production demand in operation. But its filtering precision is limited, and in the process of filtering rolling oil, it is difficult to effectively remove small particle impurities, such as some sub-micron metal particles, oxidation products, etc. These small impurities remaining in the rolling oil will cause surface scratches, pitting, pinholes and other defects in the rolling process, which seriously affects the product quality.
[0004] On the other hand, traditional plate filter is prone to blockage. Its filtering time is usually less than 48 hours, and the filter medium needs to be replaced, and a large amount of waste filter medium is generated. The treatment of these waste media also needs special anti-pollution treatment, which has adverse effects on enterprises. In addition, with the increase of filtering time, impurities gradually accumulate on the surface and inside of the filter plate, reducing the effective filtering area of the filter plate and greatly increasing the filtering resistance. This leads to a sharp decrease in filtering efficiency, and the machine needs to be stopped once every 24-48 hours for cleaning the filter medium, which seriously affects the continuity and production efficiency of rolling production. SUMMARY
[0005] In view of the above technical problems, the utility model provides a novel rolling oil filter device.
[0006] In order to achieve the above purpose, the technical scheme of the utility model is as follows:
[0007] A novel rolling oil filter device, comprising:
[0008] Dirty oil pool;
[0009] Three-stage ceramic membrane filter, the inlet end is connected with the outlet end of dirty oil pool through pipeline;
[0010] Clean oil pool, the inlet end is connected with the outlet end of three-stage ceramic membrane filter through pipeline;
[0011] Y-0 total control valve, the import end is connected on the compressed air supply equipment, the export end is connected with the bottom of three ceramic membrane filter through CV-5 control valve, and the top of three ceramic membrane filter is connected with the import end of clean oil pool through CV-9 valve;
[0012] CV-8 control valve, the import end is connected with the export end of Y-0 total control valve, the export end is connected with the top of three ceramic membrane filter, the bottom of three ceramic membrane filter is connected with dust collector through CV-3 valve, and the export end of dust collector is connected with garbage bag.
[0013] P1 pump, Lq-1 flowmeter, CV-1 valve and first filter pressure monitoring table are sequentially arranged on the pipeline between the dirty oil pool and three ceramic membrane filter.
[0014] The P1 pump is connected with standby pump P2 in parallel.
[0015] Second filter pressure monitoring table is arranged between the three ceramic membrane filter and CV-9 valve.
[0016] The three ceramic membrane filter side is also connected with standby three ceramic membrane filter in parallel, the top of standby three ceramic membrane filter is connected with the import end of clean oil pool through CV-10 valve, and third filter pressure monitoring table is arranged on the top of standby three ceramic membrane filter.
[0017] Lq-2 flowmeter is arranged between the CV-9 valve and clean oil pool.
[0018] The export end of clean oil pool is connected with the oil nozzle at the roll gap of rolling mill through P3 pump, and oil receiving groove is arranged below the rolling mill, and the export end of oil receiving groove is connected with dirty oil pool.
[0019] The P3 pump is connected with standby pump P4 in parallel.
[0020] The beneficial effects of the utility model are:
[0021] 1. The three-stage ceramic membrane filter can perform high-precision, multi-stage filtration on rolling oil. The excellent filtration performance of the ceramic membrane can effectively remove impurities of different particle sizes, including tiny particulate impurities, ensuring that the rolling oil maintains extremely high cleanliness throughout the entire production process. This is crucial for the rolling process, as stable and clean rolling oil can prevent the intensification of roll wear caused by impurities, thereby extending the service life of the rolls and significantly reducing quality defects such as scratches and pitting on the surface of the rolled product, improving the appearance quality and dimensional accuracy of the product, and increasing the product's pass rate. The ceramic membrane itself has good chemical stability, high temperature resistance, and corrosion resistance, reducing the need for frequent replacement of filtration components. Moreover, the backwashing self-cleaning function can effectively remove impurities inside the filter, restoring its filtering capacity and further reducing maintenance frequency and difficulty. Compared with traditional filtration devices, this reduces a large amount of manual maintenance time and the cost of replacing components, improving the overall economic efficiency of the equipment.
[0022] 2. In the utility model, when the filtration efficiency of a group of filters decreases to a preset value, the system can seamlessly switch to the standby group to continue filtration, ensuring the continuity of rolling oil filtration. This overcomes the filtration interruption problem caused by cleaning or maintenance in traditional filtration devices. In rolling production, continuous and stable rolling oil supply is a key factor in ensuring production efficiency, which can avoid production stagnation caused by filtration interruption, allowing the entire rolling production line to operate efficiently and stably, reducing production delays and cost losses.
[0023] 3. The three-stage ceramic membrane filter of the utility model works cooperatively between stages, forming an efficient filtration system. The first-stage ceramic membrane filter can quickly intercept larger particulate impurities in the rolling oil, such as larger metal shavings and oxide scale fragments, effectively reducing the burden on subsequent stages of filters. The second-stage filter further removes medium-sized particulate impurities by designing finer pore sizes and membrane structures, improving the capture ability of these impurities. The third-stage ceramic membrane filter performs deep filtration on tiny particulate impurities, with a filtration precision of sub-micron level, greatly improving the removal efficiency of tiny impurities by the entire filtration device. This multi-stage filtration method from coarse to fine can more comprehensively and efficiently purify rolling oil compared to traditional single-structure filters.
[0024] 4, The automatic switching mechanism of the utility model not only guarantees the continuity of filtration, but also improves the filtration efficiency from the side. When a group of filters starts backwashing, another group is immediately put into use, avoiding the idle time of traditional filtration devices during cleaning or replacing filters, so that the time utilization rate of the whole filtration process is significantly improved. Moreover, the standby group is ready at any time to ensure that the rolling oil can be filtered in time and effectively at any time, and the rolling oil will not be in an unfiltered state for a long time due to temporary failure or performance degradation of the filter, thereby ensuring the stability of rolling oil quality and production efficiency.
[0025] 5, The backwashing self-cleaning function of the utility model also plays a key role in maintaining high filtration efficiency. During backwashing, high-pressure fluid can penetrate the pores and surface of the ceramic membrane, completely removing impurities adsorbed or blocked therein. This thorough cleaning method can quickly restore the ceramic membrane to a state close to the initial filtration state, ensuring that it can still maintain high filtration efficiency when used next time. Compared with the situation that traditional filters continue to decline in filtration efficiency and are difficult to recover due to blockage, the backwashing mechanism of the device effectively prolongs the high-efficiency working period of the filter, further improving the overall filtration efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is the principle diagram of the utility model; DETAILED DESCRIPTION
[0027] To make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model will be further described in detail below in combination with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0028] As Figure 1As shown, a new rolling oil filtering device, comprising: a dirty oil pool 1; a three-stage ceramic membrane filter 6, the inlet end is connected with the outlet end of the dirty oil pool 1 through a pipeline; a clean oil pool 10, the inlet end is connected with the outlet end of the three-stage ceramic membrane filter 6 through a pipeline; a Y-0 master control valve 17, the inlet end is connected on a compressed air supply device, the outlet end is connected with the bottom of the three-stage ceramic membrane filter 6 through a CV-5 control valve 16, the top of the three-stage ceramic membrane filter 6 is connected with the inlet end of the clean oil pool 10 through a CV-9 valve 8; a CV-8 control valve 15, the inlet end is connected with the outlet end of the Y-0 master control valve 17, the outlet end is connected with the top of the three-stage ceramic membrane filter 6, the bottom of the three-stage ceramic membrane filter 6 is connected with a dust collector 13 through a CV-3 valve 18, and a garbage bag 14 is connected on the outlet end of the dust collector 13. The pipeline between the dirty oil pool 1 and the three-stage ceramic membrane filter 6 is sequentially provided with a P1 pump 2, an Lq-1 flowmeter 3, a CV-1 valve 4 and a first filtering pressure monitoring table 5. The P1 pump 2 is connected with a standby pump P2 in parallel. The three-stage ceramic membrane filter 6 is provided with a second filtering pressure monitoring table 7 between the three-stage ceramic membrane filter 6 and the CV-9 valve 8. The three-stage ceramic membrane filter 6 is also connected with a standby three-stage ceramic membrane filter in parallel, the top of the standby three-stage ceramic membrane filter is connected with the inlet end of the clean oil pool 10 through a CV-10 valve, and the top of the standby three-stage ceramic membrane filter is also provided with a third filtering pressure monitoring table. The CV-9 valve 8 and the clean oil pool 10 are provided with an Lq-2 flowmeter 9. The outlet end of the clean oil pool 10 is connected with an oil nozzle at a roll gap of a rolling mill through a P3 pump 11; an oil receiving groove 12 is arranged below the rolling mill, and the outlet end of the oil receiving groove 12 is connected with the dirty oil pool 1. The P3 pump 11 is connected with a standby pump P4 in parallel.
[0029] When the utility model is used:
[0030] I. Oil filtering process:
[0031] The dirty oil in the dirty oil pool 1 is transported through the P1 pump 2 (or the standby pump P2), is monitored through the Lq-1 flowmeter 3, flows into the three-stage ceramic membrane filter 6 through the opened CV-1 valve 4 and is filtered, and the filtered clean oil flows to the clean oil pool 10 through the opened CV-9 valve 8 and the monitoring of the Lq-2 flowmeter 9, to complete a filtering cycle.
[0032] II. Rolling oil use process:
[0033] The clean oil of the clean oil pool 10 is transported through the P3 pump 11 or the standby pump P4, is sprayed out at the roll gap position of the rolling mill Mill, is received back to the rolling oil through the oil receiving groove 12 below the rolling mill and flows back to the dirty oil pool 1.
[0034] III. Filter drying process:
[0035] The compressed air provided by the factory passes through the Y-0 master control valve 17 and the pipeline opened by the CV-5 control valve 16, and the clean compressed air enters the three-stage ceramic membrane filter 6 to blow the rolling oil in the ceramic membrane filter dry. The blown oil and oil gas flow back to the clean oil pool 10 through the pipeline opened by the CV-9 valve 8. At this time, the impurity particles filtered out in the three-stage ceramic membrane filter 6 are dry and adsorbed on the surface of the ceramic membrane.
[0036] Four, filter self-cleaning process:
[0037] The compressed air provided by the factory passes through the Y-0 master control valve 17 and the pipeline opened by the CV-8 control valve 15, and the clean compressed air reversely enters the three-stage ceramic membrane filter 6 to blow off the dry impurity particles on the outer wall of the ceramic membrane in the filter to become dust, and enters the dust collector 13 through the pipeline opened by the CV-3 valve 18. After the dust is collected and filtered, the impurities are collected in the garbage bag 14, sealed and stored for subsequent treatment.
[0038] Five, automatic switching principle
[0039] 1. Filtration efficiency monitoring
[0040] During the operation of the three-stage ceramic membrane filter 6, the system monitors the filtration efficiency in real time through sensors installed at key positions of the three-stage ceramic membrane filter 6. These sensors detect the impurity content, flow change, pressure difference and other parameters of the rolling oil before and after filtration through the built-in algorithm to calculate the current filtration efficiency. When the filtration efficiency decreases to the preset value, it indicates that the ceramic membrane surface and internal pores in the three-stage ceramic membrane filter 6 have accumulated a lot of impurities, and the filtration performance is affected, and cleaning is needed.
[0041] 2. Switching control
[0042] When it is monitored that the three-stage ceramic membrane filter 6 needs to be cleaned, the control system will automatically start the switching program. The control system changes the flow direction of the rolling oil by controlling a series of electric valves or hydraulic valves. At this time, the valve action makes the rolling oil flow path switch to the standby three-stage ceramic membrane filter, so as to ensure that the rolling oil filtration process can continue uninterrupted. This automatic switching mechanism is based on accurate sensor signals and reliable valve control system, which ensures smooth transition between the two groups of filters and minimizes the impact on rolling production.
[0043] Six, drying and backwashing principle
[0044] 1. Drying and backwashing triggering and preparation
[0045] After the tertiary ceramic membrane filter 6 is switched off, the drying and backwashing program is automatically entered. During the drying process, the rolling oil inflow is cut off through the filter inlet, and the valve of compressed air is opened to fill compressed air into the filter. The rolling oil remaining in the rolling process is blown through the ceramic membrane by using the compressed air molecules with small diameters, and the impurities outside the membrane are dried. The dried impurities are similar to dust impurities adhering to the surface of the ceramic membrane. Then, the impurities are washed from the surface of the ceramic membrane by using the directional flushing principle, so that the cleaning and reuse are realized. The backwashing system first starts the related pump and valve, and prepares the high-pressure fluid for backwashing. The high-pressure fluid can be filtered compressed air or a specially configured cleaning liquid, and the selection depends on the material of the ceramic membrane and the characteristics of the rolling oil, so that the impurities are effectively removed without damaging the ceramic membrane.
[0046] 2. Backwashing process
[0047] The high-pressure fluid is sprayed to the tertiary ceramic membrane filter 6 through the spray head, so that the high-pressure fluid can impact the surface and internal pores of the ceramic membrane in the direction opposite to the rolling oil flow during the filtration. The reverse flushing mode can use the impact force of the fluid to disperse the impurities adsorbed on the ceramic membrane and take away the impurities with the fluid. During the backwashing process, the pressure, flow and flushing time of the backwashing fluid are strictly controlled. The appropriate pressure can ensure that there is enough power to remove the impurities, but the ceramic membrane will not be physically damaged; the appropriate flow ensures that the entire surface of the ceramic membrane can be fully flushed; and the accurate flushing time can effectively remove the impurities and avoid unnecessary energy waste and excessive flushing of the ceramic membrane. Through the backwashing process, the tertiary ceramic membrane filter 6 can restore to the initial filtration performance, so as to be ready for the next use.
[0048] Through the above principle, the tertiary ceramic membrane filter system with one standby can realize continuous, efficient and high-quality filtration of the rolling oil, provide stable and reliable rolling oil supply for rolling production, and guarantee the smooth progress of the rolling process and the improvement of the product quality.
[0049] Further, through Figure 1 It can be known that all pneumatic valves involved in the utility model are used for driving the valve action of the compressed air from the Y-0 master control valve 17, and are controlled through corresponding Y-1 to Y-10 air control valves.
[0050] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.
Claims
1. A novel rolling oil filtering device, characterized by, It includes: The dirty oil pool (1); Three-stage ceramic membrane filter (6), the inlet end is connected with the outlet end of the dirty oil pool (1) through pipeline; The clean oil pool (10), the inlet end is connected with the outlet end of the three-stage ceramic membrane filter (6) through pipeline; Y-0 master control valve (17), the inlet end is connected on the compressed air supply equipment, the outlet end is connected with the bottom of the three-stage ceramic membrane filter (6) through CV-5 control valve (16), the top of the three-stage ceramic membrane filter (6) is connected with the inlet end of the clean oil pool (10) through CV-9 valve (8); CV-8 control valve (15), the inlet end is connected with the outlet end of Y-0 master control valve (17), the outlet end is connected with the top of the three-stage ceramic membrane filter (6), the bottom of the three-stage ceramic membrane filter (6) is connected with the dust collector (13) through CV-3 valve (18), the outlet end of the dust collector (13) is connected with the garbage bag (14).
2. A novel rolling oil filtering device according to claim 1, characterized in that: The pipeline between the dirty oil pool (1) and the three-stage ceramic membrane filter (6) is provided with P1 pump (2), Lq-1 flowmeter (3), CV-1 valve (4) and first filter pressure monitoring table (5) in sequence.
3. A novel rolling oil filtering device according to claim 2, characterized in that: The P1 pump (2) is connected with standby pump P2 in parallel.
4. A novel rolling oil filtering device according to claim 1, characterized in that: The three-stage ceramic membrane filter (6) is provided with second filter pressure monitoring table (7) between the three-stage ceramic membrane filter (6) and CV-9 valve (8).
5. A novel rolling oil filtering device according to claim 4, characterized in that: The three-stage ceramic membrane filter (6) is also connected with standby three-stage ceramic membrane filter in parallel, the top of the standby three-stage ceramic membrane filter is connected with the inlet end of the clean oil pool (10) through CV-10 valve, and the top of the standby three-stage ceramic membrane filter is also provided with third filter pressure monitoring table.
6. A novel rolling oil filtering device as claimed in claim 1, wherein: The CV-9 valve (8) is provided with Lq-2 flowmeter (9) between the CV-9 valve (8) and the clean oil pool (10).
7. A novel rolling oil filtering device as claimed in claim 1, wherein: The outlet end of the clean oil pool (10) is connected with the oil nozzle at the roll gap of the rolling mill through P3 pump (11); The oil receiving groove (12) is arranged below the rolling mill, and the outlet end of the oil receiving groove (12) is connected with the dirty oil pool (1).
8. A novel rolling oil filtering device according to claim 7, characterized in that: The P3 pump (11) is connected with standby pump P4 in parallel.