Rolling oil circulating filtering device
By designing a rolling oil circulation filter device including a circulation pump, a filter pump and a filter, the problems of low filtration efficiency of rolling oil and difficulty in cleaning sand and soil deposition are solved, and the sand and soil cleaning effect is achieved without shutdown, low cost and high safety.
Patent Information
- Application Number
- CN202421378226.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the filtration process of rolling oil, the problem of reducing filtration efficiency and difficulty in cleaning up sand and soil deposits in the oil tank caused by impurities accumulation, resulting in production shutdown, high labor costs and harsh working environment.
A rolling oil circulation filter device is designed, including an oil tank, a circulation pump, a filter pump, a filter, a circulation pipeline and a filter pipe. The oil is circulated and flowed through the circulation pump, suspended the deposited sand and soil, and filtered the sand and soil through the filter pump and the filter to achieve effective cleaning of sand and soil.
It has achieved sand and soil cleaning without shutdown, no need to vent a large amount of rolling oil, and no manpower cleaning, reducing labor costs and equipment costs for storing rolling oil, and improving work safety and cleanliness of rolling oil.
Smart Images
Figure CN222902176U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aluminum plate, strip and foil rolling, in particular to a rolling oil circulation filtering device. Background Art
[0002] During the cold rolling process of aluminum alloy plates, strips and foils, rolling oil is needed for cooling, lubrication and cleaning. The aluminum powder and other impurities washed off are mixed in the rolling oil, so the rolling oil needs to be filtered, and the filtered rolling oil is returned to the oil tank for collection and recycling.
[0003] The current method of filtering rolling oil is: use a filter to filter the rolling oil before it flows back to the oil tank. The filter includes a housing and a filter disc on the housing. The filter disc is provided with filter paper. The filter paper is coated with a mixed sand layer of diatomaceous earth and kaolin. Under high pressure, the rolling oil passes through the filter quickly. The rolling oil passes through the filter paper and the filter disc, thereby achieving the filtering of the rolling oil. However, with the continuous use of the filter, when a certain amount of filtered oil passes through, aluminum powder or other impurities will block the gaps constructed by diatomaceous earth and kaolin on the filter paper. The accumulation of impurities on the filter disc increases the pressure of the filter disc and reduces the filtering efficiency. Therefore, it is necessary to replace the filter paper and then coat the mixed sand layer of diatomaceous earth and kaolin.
[0004] Before replacing the filter paper, 0.5MPa compressed air is needed to dry the oil sand in the filter disc. At this time, a large amount of diatomaceous earth and clay will pass through the filter paper and enter the filter housing. The diatomaceous earth and clay in the filter housing will follow the rolling oil into the oil tank. In this way, over time, more and more diatomaceous earth and clay will be in the oil tank, and the diatomaceous earth and clay will sink to the bottom of the oil tank to form "sand dunes".
[0005] If the rolling oil in the oil tank is not cleaned for a long time, the sand and soil in the oil tank will accumulate more and more, affecting the circulation and filtration of the rolling oil, and even affecting the surface quality of the aluminum plate, strip and foil. For this reason, the production process personnel will clean the oil tank regularly. During the cleaning process, the machine will be shut down, and nearly 50,000 liters of rolling oil will be emptied. Then manpower will be deployed to enter the oil tank in the confined space for cleaning (the cleaning method is to shovel out the sand and soil in the oil tank). Therefore, the current cleaning method has the following disadvantages: long downtime, large rolling oil storage space and harsh storage conditions, poor working environment inside the oil tank, and the risk of suffocation of workers and sparks caused by metal collisions (there is a certain amount of oil and gas inside the oil tank) and many other difficulties. Utility Model Content
[0006] The utility model aims to provide a rolling oil circulation filtering device to solve the problem of difficult cleaning caused by sand and soil deposition in the oil tank.
[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rolling oil circulation and filtering device, including an oil tank, a circulation pump, a filter pump, a filter, a circulation pipe and a filter pipe, both ends of the circulation pipe are connected to the oil tank, and the circulation pump is installed on the circulation pipe; both ends of the filter pipe are connected to the oil tank, and the filter and the filter pump are installed on the filter pipe.
[0008] The principle and advantage of this scheme are: in this scheme, after the oil tank has been used for a period of time, there will be a certain layer of sand at the bottom of the oil tank. When cleaning the oil tank, turn on the circulation pump, which makes the oil in the oil tank circulate, and the impurities such as sand and soil deposited at the bottom of the oil tank and the impurities such as sand and soil not deposited at the bottom of the oil tank are suspended under the strong impact of the circulation of the oil in the oil tank. At the same time, start the filter pump, the filter pump extracts the oil in the oil tank, and the oil in the oil tank enters the filter pipe. Since the sand and soil in the oil tank are suspended and mixed with the oil, the oil entering the filter pipe contains a certain amount of sand and soil, and then the oil containing sand and soil passes through the filter, the filter filters the sand and soil, and the filtered oil returns to the oil tank, thus circulating back and forth, realizing the treatment of the sand and soil at the bottom of the oil tank.
[0009] The beneficial effects of this solution are: compared with the existing technology, during the oil tank cleaning process, there is no need to stop the machine, there is no need to drain a large amount of rolling oil, and there is no need to invest manpower to enter the oil tank in a confined space for cleaning. This greatly reduces labor costs, equipment costs for storing rolling oil, and reduces the space occupied by the released rolling oil, improves work safety, and is simple and convenient to operate.
[0010] In addition, by adopting this solution, the sand and soil in the oil tank can be cleaned at any time. Compared with the existing technology, there is no need to wait until a large amount of sand and soil accumulates at the bottom of the oil tank to form a "sand dune" before cleaning. The frequency of cleaning the sand and soil in the oil tank can be increased, the sand content in the oil tank is small, and the cleanliness of the rolling oil is improved.
[0011] Preferably, as an improvement, an impact pipe is laid at the bottom of the oil tank, and the impact pipe is connected to the liquid outlet end of the circulation pipeline; a plurality of liquid outlet impact holes are provided on the impact pipe.
[0012] Thus, the liquid flowing out from the liquid outlet of the circulation pipe enters the impact pipe, and the liquid flows out from the liquid outlet impact hole of the impact pipe. Since the impact pipe is located at the bottom of the oil tank, it can carry out targeted impact on the sand and soil at the bottom of the oil tank, making the sand and soil at the bottom of the oil tank more suspended, solving the problem of poor suspension effect caused by the sand and soil at the bottom of the oil tank being not easily impacted by the oil. In addition, the setting of the impact pipe makes it possible for the sand layer far away from the circulation pump to be impacted, and the sand and soil cleaning effect is improved.
[0013] Preferably, as an improvement, the impact pipe is bent and distributed at the bottom of the oil tank.
[0014] Therefore, the bent distribution of the impact tube increases the distribution area of the impact tube at the bottom of the oil tank, thereby improving the impact effect on the sand and soil at the bottom of the oil tank.
[0015] Preferably, as an improvement, a filter box is provided at the liquid inlet end of the circulation pipeline.
[0016] Therefore, the filter box is used to filter the oil entering the circulation pipe, reduce the amount of sand entering the circulation pipe, and avoid blockage caused by too much sand entering the circulation pipe. At the same time, it can also avoid too much sand entering the impact pipe and causing blockage of the impact pipe.
[0017] Preferably, as an improvement, a branch pipe is connected to the circulation pipe, one end of the branch pipe connected to the circulation pipe is located between the liquid outlet end of the circulation pump and the liquid outlet end of the circulation pipe, and the other end of the branch pipe is close to and faces the filter box.
[0018] Since the filter box filters the sand and keeps it out, a large amount of sand will accumulate on the surface of the filter box, which will affect the oil from entering the circulation pipe. For this reason, in this scheme, part of the liquid in the circulation pipe flows into the branch pipe, and the liquid in the branch pipe flows out to impact the sand on the surface of the filter box, reducing the accumulation of sand on the surface of the filter box and reducing the blockage of sand in the filter box, which is beneficial to ensure that the oil can smoothly enter the circulation pipe.
[0019] Preferably, as an improvement, the liquid outlet end of the filter pipe is close to and faces the filter box.
[0020] As a result, the liquid flowing out of the filter pipe can also impact the surface of the filter box, reducing the accumulation of sand on the surface of the filter box and reducing the accumulation of sand in the filter box, which is beneficial to ensure that the oil can smoothly enter the circulation pipe.
[0021] Preferably, as an improvement, it also includes a liquid inlet pipeline, which includes a liquid inlet main pipe and a plurality of liquid inlet branches connected to the liquid inlet main pipe, the liquid inlet main pipe is connected to the filter pipe, and the pipe openings of the liquid inlet branches are located at the liquid level of the oil tank.
[0022] Thus, the oil in the oil tank enters the main inlet pipe through multiple inlet branches, and then enters the filter pipe to be filtered by the filter. Since there are multiple inlet branches, the main inlet pipe can suck oil from different parts of the oil tank, thereby ensuring the filtering effect of sand and soil, ensuring that sand and soil in different parts of the oil tank can be filtered, and ensuring the effect of sand and soil cleaning.
[0023] Preferably, as an improvement, the fuel tank is covered with a fuel tank cover, and the liquid inlet pipeline is installed on the fuel tank cover. Thus, the liquid inlet pipeline is installed on the fuel tank cover, and the fuel tank cover plays a role in supporting and fixing the liquid inlet pipeline.
[0024] Preferably, as an improvement, the liquid inlet main pipe is arranged horizontally, the liquid inlet branch pipe is arranged vertically, and the liquid inlet branch pipe is inserted below the liquid level of the oil tank.
[0025] Preferably, as an improvement, the liquid inlet main pipe is arranged to be bent transversely, thereby increasing the laying area of the liquid inlet main pipe and facilitating increasing the number of liquid inlet branch pipes. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic structural diagram of a rolling oil circulation filtering device in Example 1 (viewed from above the oil tank).
[0027] Figure 2 This is a schematic structural diagram of a rolling oil circulation filtering device in Example 2 (viewed from above the oil tank).
[0028] Figure 3 This is a schematic structural diagram of a rolling oil circulation filtering device in Example 3 (viewed from above the oil tank).
[0029] Figure 4 This is a schematic structural diagram of a rolling oil circulation filtering device in Example 4 (viewed from the front of the oil tank). DETAILED DESCRIPTION
[0030] The following is further described in detail through specific implementation methods:
[0031] The figure marks in the drawings of the specification include: oil tank 1, filter pump 2, filter pipe 3, filter 4, circulation pump 5, circulation pipe 6, branch pipe 7, filter box 8, impact pipe 9, liquid outlet impact hole 10, oil tank cover 11, liquid inlet main pipe 12, liquid inlet branch pipe 13, liquid outlet 14.
[0032] Example 1
[0033] Basically as attached Figure 1 As shown: a rolling oil circulation and filtering device, including an oil tank 1, a circulation pump 5, a filtering pump 2, a filter 4, a circulation pipeline 6 and a filtering pipeline 3.
[0034] In this embodiment, the oil tank 1 is a rectangular parallelepiped structure, the length of the oil tank 1 is 4-8m, the width is 2-4m, and the height is 2-4m. The actual volume of the oil tank can be set according to the actual situation and the size of the site. The circulation pipeline 6 is located on one side of the oil tank 1, and both ends of the circulation pipeline 6 are connected to the oil tank 1, and the circulation pump 5 is installed on the circulation pipeline 6. Since the sand and soil at the bottom of the oil tank 1 are suspended under the impact of the oil driven by the circulation pump 5, the circulation pump 5 and the circulation pipeline 6 are preferably installed and set at the position close to the bottom of the oil tank 1, so as to have a more targeted impact on the sand and soil at the bottom of the oil tank 1. The filter pipeline 3 is located on the other side of the oil tank 1, and both ends of the filter pipeline 3 are connected to the oil tank 1, and the filter 4 and the filter pump 2 are installed on the filter pipeline 3. Since the filter 4 filters the suspended sand and soil, the installation position of the filter pipeline 3 can be set at the middle and upper parts of the oil tank. The filter 4 and the filter pump 2 in this embodiment can be separately set up on the existing basis (for the selection of the filter, it can be a plate filter, the type of filter is not limited to this, and it is selected according to the actual situation), and the filter 4 and the filter pump 2 can also be directly used without being separately set up and the existing filter pump and filter used for filtering the rolling oil in the background technology. The diameter of the filter pipe 3 in this embodiment is larger than the diameter of the circulation pipe 6.
[0035] The working parameters of the circulation pump 5 in this embodiment are: flow rate 500L / min, pressure 0.4MPa, power 5kw, and of course in other embodiments, other working parameters can be set according to the actual size of the oil tank 1. In this embodiment, the filter pump 2 can be a centrifugal pump.
[0036] The specific implementation process is as follows: In this scheme, after the oil tank 1 has been used for a period of time, a certain layer of sand will be deposited at the bottom of the oil tank 1. When cleaning the oil tank 1, the circulation pump 5 is turned on, and the circulation pump 5 makes the oil in the oil tank 1 circulate. The impurities such as sand and soil deposited at the bottom of the oil tank 1 or the impurities such as sand and soil that have not been deposited are suspended under the strong impact of the circulation of the oil in the oil tank 1. At the same time, the filter pump 2 is started, and the filter pump 2 sucks the oil in the oil tank 1. The oil in the oil tank 1 enters the filter pipe 3. Since the sand and soil in the oil tank 1 are suspended and mixed with the oil, the oil entering the filter pipe 3 contains a certain amount of sand and soil. Then the oil containing sand and soil passes through the filter 4, and the filter 4 filters the sand and soil. The filtered oil returns to the oil tank 1 again, and the cycle is repeated to achieve the treatment of the sand and soil at the bottom of the oil tank 1, and the sand and soil content in the oil tank 1 is getting less and less.
[0037] Example 2
[0038] Combination Figure 2As shown, in this embodiment, a filter box 8 is provided at the liquid inlet end of the circulation pipe 6. The filter box 8 in this embodiment specifically includes a box body and a filter screen. The filter screen is clamped on the surface of the box body by a clamping groove and a clamping block. The box body is threadedly connected to the liquid inlet end of the circulation pipe. A branch pipe 7 is connected to the circulation pipe 6 in this embodiment. One end of the branch pipe 7 connected to the circulation pipe 6 is located between the liquid outlet end of the circulation pump 5 and the liquid outlet end of the circulation pipe 6. The other end of the branch pipe 7 is close to and faces the filter screen of the filter box 8. In this embodiment, the distance between the end of the branch pipe 7 and the filter box 8 is 1-2 cm. In this embodiment, the diameter of the branch pipe 7 is smaller than the diameter of the circulation pipe 6.
[0039] The reason why the filter box 8 is arranged at the liquid inlet end of the circulation pipe 6 is to prevent a large amount of sand and soil deposited at the bottom of the oil tank 1 from entering the circulation pipe 6 and blocking the circulation pipe 6.
[0040] Since the filter box 8 filters the sand, a large amount of sand will accumulate on the surface of the filter net of the filter box 8, thereby affecting the oil from entering the circulation pipe 6. For this reason, in this scheme, part of the liquid in the circulation pipe 6 flows into the branch pipe 7, and the liquid in the branch pipe 7 flows out to impact the sand on the surface of the filter box 8, thereby reducing the accumulation of sand on the surface of the filter box 8 and reducing the blockage of the filter box 8 by sand, which is conducive to ensuring that the oil can smoothly enter the circulation pipe 6.
[0041] Of course, in other embodiments, the liquid outlet end of the filter pipe 3 can also be close to and facing the filter box 8, so that the liquid flowing out of the filter pipe 3 can also impact the sand on the surface of the filter screen of the filter box 8, reducing the accumulation of sand on the surface of the filter screen.
[0042] Example 3
[0043] Combination Figure 3 As shown, in this embodiment, an impact pipe 9 is laid at the bottom of the oil tank 1, and one end of the impact pipe 9 is connected to the liquid outlet end of the circulation pipe 6 (for example, by welding or threaded connection through a connector); a plurality of liquid outlet impact holes 10 are provided on the impact pipe 9, and the liquid outlet impact pipe 9 is arranged along the length direction of the impact pipe 9 on the one hand, and along the circumference of the impact pipe 9 on the other hand. The impact pipe 9 is bent and distributed at the bottom of the oil tank 1, thereby increasing the laying area of the impact pipe 9 at the bottom of the oil tank 1.
[0044] Thus, the liquid flowing out of the liquid outlet end of the circulation pipe 6 enters the impact pipe 9, and the liquid flows out from the liquid outlet impact hole 10 of the impact pipe 9. Since the impact pipe 9 is located at the bottom of the oil tank 1, it can carry out targeted impact on the sand and soil at the bottom of the oil tank 1, so that the sand and soil at the bottom of the oil tank 1 have a better suspension effect, solving the problem that the sand and soil at the bottom of the oil tank 1 are not easily impacted by the oil and the suspension effect is not good. At the same time, the setting of the impact pipe 9 can impact the sand and soil at a location far away from the circulation pump 5.
[0045] in addition, Figure 3 The provision of the middle filter box 8 can also reduce the amount of sand and soil entering the impact pipe 9 , thereby preventing the sand and soil from clogging the impact pipe 9 , and ensuring that the liquid in the impact pipe 9 flows normally and flows out from the liquid outlet impact hole 10 .
[0046] Example 4
[0047] Combination Figure 4 As shown, in this embodiment, the top of the oil tank 1 is covered with an oil tank cover 11 (the oil tank cover 11 is welded from iron plates), and the oil tank cover 11 is provided with a liquid inlet pipeline, which includes a liquid inlet main pipe 12 and a plurality of liquid inlet branches 13 connected (for example, welded or threaded) to the liquid inlet main pipe 12. The liquid inlet main pipe 12 is welded or fixed to the oil tank cover 11 by a clamp, and the liquid inlet main pipe 12 is horizontally bent on the oil tank cover 11. The liquid inlet main pipe 12 is connected with a liquid outlet 14, and the liquid outlet 14 is connected to the filter pipe 3 (for example, welded or threaded). The liquid inlet main pipe 12 is connected with a plurality of liquid inlet branches 13, and the plurality of liquid inlet branches 13 are vertically arranged, and the pipe openings of the liquid inlet branches 13 extend downward to the liquid surface of the oil tank 1.
[0048] As a result, the suspended sand and soil are located at the liquid surface. After the filter pump 2 is turned on, the oil at the liquid surface of the oil tank 1 can enter the liquid inlet main pipe 12 through different vertical liquid inlet branches 13, and enter the filter pipe 3 from the liquid inlet main pipe 12. In this way, the oil in different horizontal parts of the oil tank 1 can enter the filter pipe 3, which is conducive to ensuring that the sand and soil in different parts of the oil tank 1 can be filtered, ensuring the uniformity of sand and soil cleaning, and ensuring the quality of sand and soil cleaning.
[0049] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A rolling oil circulation and filtering device, comprising an oil tank, characterized in that: It also includes a circulation pump, a filter pump, a filter, a circulation pipeline and a filter pipeline. Both ends of the circulation pipeline are connected to the oil tank, and the circulation pump is installed on the circulation pipeline; both ends of the filter pipeline are connected to the oil tank, and the filter and the filter pump are installed on the filter pipeline.
2. A rolling oil circulation filter device according to claim 1, characterized in that: An impact pipe is laid at the bottom of the oil tank, and the impact pipe is connected to the liquid outlet end of the circulation pipeline; and a plurality of liquid outlet impact holes are arranged on the impact pipe.
3. A rolling oil circulation filter device according to claim 2, characterized in that: The impact pipe is bent and distributed at the bottom of the oil tank.
4. A rolling oil circulation filter device according to claim 1, characterized in that: A filter box is provided at the liquid inlet end of the circulation pipeline.
5. A rolling oil circulation filtering device according to claim 4, characterized in that: The circulation pipeline is connected with a branch pipeline, one end of the branch pipeline connected to the circulation pipeline is located between the liquid outlet end of the circulation pump and the liquid outlet end of the circulation pipeline, and the other end of the branch pipeline is close to and faces the filter box.
6. A rolling oil circulation filtering device according to claim 4, characterized in that: The liquid outlet end of the filter pipe is close to and faces the filter box.
7. A rolling oil circulation filtering device according to claim 1, characterized in that: It also includes a liquid inlet pipeline, which includes a liquid inlet main pipe and a plurality of liquid inlet branches connected to the liquid inlet main pipe. The liquid inlet main pipe is connected to the filter pipe, and the pipe openings of the liquid inlet branches are located at the liquid level of the oil tank.
8. A rolling oil circulation filtering device according to claim 7, characterized in that: The oil tank is covered with an oil tank cover, and the liquid inlet pipeline is installed on the oil tank cover.
9. A rolling oil circulation filtering device according to claim 8, characterized in that: The liquid inlet main pipe is arranged horizontally, and the liquid inlet branch pipe is arranged vertically, and the liquid inlet branch pipe is inserted below the liquid level of the oil tank.
10. A rolling oil circulation filtering device according to claim 9, characterized in that: The liquid inlet main pipe is bent.