Ceramic membrane filtration oil removal system

Abstract

The utility model discloses a ceramic membrane filtration oil removal system, and relates to the technical field of filtration oil removal. The ceramic membrane filtration oil removal system comprises a ceramic membrane assembly, a filter element and a filter element, one end of the first pipeline is communicated with the top of the ceramic membrane component; the oil separation circulating tank is communicated with the other end of the first pipeline, and the tail end of the first pipeline is close to one side of the top of the oil separation circulating tank; one end of the second pipeline is communicated with the bottom of the ceramic membrane assembly, and the other end of the second pipeline is communicated with the bottom of the oil separation circulating tank; one end of the third pipeline is communicated with one side close to the bottom of the ceramic membrane component; and a cleaning liquid storage cylinder. The utility model solves the problems that in the prior art, the widely adopted filtering modes comprise physical sedimentation, bag type filtration, sand filtration, traditional organic membrane separation and other technologies, but the modes are low in filtering precision, cannot effectively separate microemulsified oil, are easy to pollute or block membrane materials, are frequent in cleaning period, poor in treatment stability and the like.

Description

Technical Field

[0001] This utility model relates to the field of filtration and oil removal technology, and in particular to a ceramic membrane filtration and oil removal system. Background Technology

[0002] In industrial cleaning, metal processing, automotive manufacturing, and electronic component cleaning, cleaning fluids are commonly used to remove oil, particles, and impurities from workpiece surfaces. With repeated use, grease, suspended particles, and other contaminants gradually accumulate in the cleaning fluid, leading to a decrease in cleaning effectiveness and consequently affecting the surface cleanliness of the workpiece and the quality of subsequent processing. Therefore, to extend the service life of cleaning fluids, reduce replacement frequency, and mitigate environmental emission risks, liquid filtration devices are widely used in industrial settings to regenerate the cleaning fluids.

[0003] Existing technologies widely employ filtration methods including physical sedimentation, bag filtration, sand filtration, and traditional organic membrane separation. However, these methods generally suffer from low filtration accuracy, ineffective separation of microemulsions, easy fouling or clogging of membrane materials, frequent cleaning cycles, and poor processing stability, making it difficult to meet industrial demands for high cleanliness and long-term operation. Currently, no effective solutions have been proposed to address these problems. Utility Model Content

[0004] Purpose of the utility model: To provide a ceramic membrane filtration oil removal system to at least solve one of the problems existing in the prior art.

[0005] Technical solution: A ceramic membrane filtration oil removal system, comprising:

[0006] Ceramic membrane modules;

[0007] The first conduit has one end connected to the top of the ceramic membrane assembly;

[0008] An oil-separating circulation tank is connected to the other end of the first pipeline, and the end of the first pipeline is close to the top side of the oil-separating circulation tank.

[0009] The second pipeline has one end connected to the bottom of the ceramic membrane assembly and the other end connected to the bottom of the oil-separating circulation tank.

[0010] The third conduit is connected at one end to the bottom side near the ceramic membrane assembly;

[0011] A cleaning fluid storage tank is disposed adjacent to the oil-separating circulation tank and connected to the other end of the third pipeline near its bottom; and

[0012] A circulating pump is installed on the second pipeline;

[0013] The oil-containing concentrate in the oil-separating circulation tank is supplied to the ceramic membrane module for filtration and oil removal via the circulation pump, and the treated clean permeate is then delivered to the cleaning solution storage tank.

[0014] Preferably, the first pipeline is provided with a first switching valve for opening or closing the oil-containing concentrate to be transported to the oil-separating circulation tank.

[0015] Preferably, the inner wall of the oil-separating circulation tank is provided with a plurality of liquid level sensors along the vertical direction for monitoring the liquid level height in the oil-separating circulation tank.

[0016] Preferably, a first pressure sensor is also provided on the second pipeline, and the first pressure sensor is located between the ceramic membrane assembly and the circulation pump.

[0017] Preferably, a liquid level separator is vertically arranged between the oil-separating circulation tank and the cleaning fluid storage tank;

[0018] The height of the liquid level separator is lower than the height of the oil-water separation circulation tank and the height of the cleaning fluid storage tank, so that the liquid at the top of the cleaning fluid storage tank overflows into the oil-water separation circulation tank.

[0019] Preferably, the liquid level divider is provided with a filter screen for filtering overflow liquid on the side near its top.

[0020] Preferably, the system further includes a fourth pipeline for conveying the concentrate, the fourth pipeline being connected to the first pipeline.

[0021] Preferably, the junction of the fourth pipeline and the first pipeline is located on the input side of the first switching valve.

[0022] Preferably, the fourth pipeline is provided with a second switch valve for opening or closing the discharge of concentrated liquid.

[0023] Preferably, a second pressure sensor is provided at the confluence point;

[0024] Specifically, the oil content of the circulating fluid is determined by monitoring the pressure difference across the ceramic membrane assembly using the first pressure sensor and the second pressure sensor, respectively, in order to control the opening or closing of the second switching valve.

[0025] Beneficial Effects: In this embodiment, a ceramic membrane is used for oil removal filtration. The oil-containing concentrate in the oil-separating circulation tank is supplied to the ceramic membrane module for filtration and oil removal via the circulation pump. The treated clean permeate is then transported to the cleaning liquid storage tank, achieving the purpose of oil removal filtration and separation. This improves the filtration accuracy and achieves the technical effect of circulating oil removal filtration. Furthermore, it solves the problems of existing filtration methods, such as physical sedimentation, bag filtration, sand filtration, and traditional organic membrane separation, which generally suffer from low filtration accuracy, ineffective separation of microemulsion oil, easy contamination or clogging of membrane materials, frequent cleaning cycles, and poor processing stability. These methods are difficult to meet the technical requirements of high cleanliness and long-term operation in industrial applications. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the ceramic membrane filtration oil removal system of this utility model; and

[0027] Figure 2 This is a schematic diagram of another ceramic membrane filtration oil removal system according to this utility model.

[0028] The attached figures are labeled as follows:

[0029] 10. Ceramic membrane modules;

[0030] 20. First pipeline;

[0031] 30. Oil-separating circulation tank;

[0032] 40. Second pipeline;

[0033] 50. Third pipeline;

[0034] 60. Cleaning fluid storage tank;

[0035] 70. Circulating pump;

[0036] 80. First switching valve;

[0037] 90. Liquid level sensor;

[0038] 100. First pressure sensor;

[0039] 110. Liquid level divider;

[0040] 120. Fourth pipeline;

[0041] 130. Convergence point;

[0042] 140. Second switching valve;

[0043] 150. Second pressure sensor. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] like Figure 1-2 As shown, this application relates to a ceramic membrane filtration oil removal system. This ceramic membrane filtration oil removal system includes a ceramic membrane module 10. A ceramic membrane is a filter membrane based on inorganic materials (such as alumina, zirconium oxide, or titanium oxide), possessing characteristics such as high temperature resistance, chemical corrosion resistance, high mechanical strength, and long service life. The ceramic membrane module 10 is generally used in applications such as solid-liquid separation, oil-water separation, and impurity filtration. In this application, the ceramic membrane is responsible for filtering out oil molecules and particulate impurities from oily liquids, achieving liquid purification.

[0049] The first pipeline 20 has one end connected to the top of the ceramic membrane assembly 10; it connects the top of the ceramic membrane to the top of the oil-separating circulation tank 30 and is used for reflux of the concentrate.

[0050] The oil-water separation circulation tank 30 is connected to the other end of the first pipeline 20, and the end of the first pipeline 20 is close to the top side of the oil-water separation circulation tank 30; it stores the liquid to be treated, receives high-concentration reflux liquid at the top, and supplies the circulation pump 70 at the bottom to promote natural oil-water separation.

[0051] The second pipeline 40 is connected at one end to the bottom of the ceramic membrane assembly 10 and at the other end to the bottom of the oil-separating circulation tank 30; oil-containing liquid is drawn from the bottom of the oil-separating circulation tank 30 and transported to the bottom of the ceramic membrane to form a circulation process.

[0052] The third pipeline 50 is connected at one end to the bottom side near the ceramic membrane assembly 10; it transports the clean permeate after filtration by the ceramic membrane, that is, the liquid after degreasing, into the cleaning liquid storage tank 60 for subsequent cleaning or reuse.

[0053] The cleaning fluid storage tank 60 is arranged adjacent to the oil-separating circulation tank 30 and is connected to the other end of the third pipeline 50 near its bottom; it collects clean permeate and also serves as a cleaning agent storage, which facilitates system maintenance.

[0054] The circulating pump 70 is installed on the second pipeline 40; it can provide a stable driving force.

[0055] The oil-containing concentrate in the oil-separating circulation tank 30 is supplied to the ceramic membrane module 10 for filtration and oil removal via the circulation pump 70, and the treated clean permeate is then delivered to the cleaning solution storage tank 60.

[0056] Specifically, the oil-containing concentrate is transported to the oil-separating circulation tank 30 through the first pipeline 20;

[0057] After natural stratification, the oily liquid in the oil-water separation circulation tank 30 is driven by the circulation pump 70. The liquid at the bottom of the oil-water separation circulation tank 30 is replenished into the bottom of the membrane module through the second pipeline 40, forming a liquid inlet mode with upper and lower combination and balanced pressure distribution, thereby improving filtration efficiency.

[0058] After filtration by the ceramic membrane module 10, the clean permeate flows through the third pipeline 50 into the cleaning solution storage tank 60 for storage or recycling.

[0059] Concentrated oil molecules and impurities are blocked on the membrane surface and flow back into the oil-water separation circulation tank 30 for circulation treatment until the oil concentration reaches the preset standard for further treatment or discharge.

[0060] This application also has the following beneficial effects:

[0061] 1. High-efficiency oil-water separation: The ceramic membrane module 10 can efficiently filter out grease and suspended impurities in liquids, with high separation accuracy and good permeate cleanliness.

[0062] Second, it is highly durable and adaptable to harsh environments. The ceramic membrane material is resistant to high temperatures, acids and alkalis, and is not easily contaminated or clogged, which greatly reduces the frequency of maintenance and replacement costs.

[0063] Third, recycling and resource conservation: the system realizes continuous circulation filtration of oily liquids, and the permeate can be reused, saving water resources and cleaning fluid consumption.

[0064] Fourth, it has a high degree of automation and continuous and stable operation. Driven by a circulating pump 70 and with a dual liquid inlet design at the top and bottom, it ensures uniform filtration pressure and stable liquid flow, which is conducive to the long-term use of membrane modules.

[0065] As can be seen from the above description, this application achieves the following technical effects:

[0066] In this embodiment, a ceramic membrane is used for oil removal filtration. The oil-containing concentrate in the oil-separating circulation tank 30 is supplied to the ceramic membrane module 10 for filtration and oil removal via the circulation pump 70. The treated clean permeate is then transported to the cleaning liquid storage tank 60, achieving the purpose of oil removal filtration and separation. This improves the filtration accuracy and achieves the technical effect of circulating oil removal filtration. It also solves the problems of existing filtration methods, such as physical sedimentation, bag filtration, sand filtration, and traditional organic membrane separation, which generally suffer from low filtration accuracy, ineffective separation of microemulsion oil, easy contamination or clogging of membrane materials, frequent cleaning cycles, and poor processing stability. These methods are difficult to meet the technical requirements of high cleanliness and long-term operation in industrial applications.

[0067] Furthermore, the first pipeline 20 is equipped with a first switching valve 80 for opening or closing the oil-containing concentrate to be transported to the oil-separating circulation tank 30. It is understood that by installing the first switching valve 80 on the first pipeline 20, the oil-containing concentrate can be controlled to be transported to the oil-separating circulation tank 30, allowing for flexible control of whether the filtered oil-containing liquid returns to the circulation tank by switching the flow path as needed.

[0068] Furthermore, the inner wall of the oil-water separation circulation tank 30 is vertically equipped with several level sensors 90 for monitoring the liquid level within the tank. This allows for multi-point monitoring of the liquid level, providing real-time feedback on the oil-water stratification status. It enables automatic start / stop of the circulation pump 70 or triggers oil drainage based on the level signal. Simultaneously, it provides high-level alarms to prevent liquid overflow and low-level protection to prevent pump damage from dry running.

[0069] Furthermore, a first pressure sensor 100 is also installed on the second pipeline 40, located between the ceramic membrane module 10 and the circulation pump 70. It is understood that a pressure sensor is used to detect the inlet pressure of the ceramic membrane module 10, thereby determining the operating status of the membrane module, such as whether it is clogged or whether filtration is normal, thus achieving timely protection of the membrane module and the circulation system.

[0070] Furthermore, a liquid level divider plate 110 is vertically arranged between the oil-separating circulation tank 30 and the cleaning fluid storage tank 60;

[0071] The height of the liquid level separator 110 is lower than the height of the oil-water separation circulation tank 30 and the cleaning fluid storage tank 60, so that the liquid at the top of the cleaning fluid storage tank 60 overflows into the oil-water separation circulation tank 30. It can be understood that by setting the liquid level separator 110, the oil-containing cleaning fluid at the top of the cleaning fluid storage tank 60 can overflow back into the oil-water separation circulation tank 30, facilitating further purification and filtration.

[0072] Furthermore, the liquid level divider 110 is provided with a filter screen for filtering overflow liquid near its top side. It is understood that by providing a filter screen, suspended matter in the overflow liquid can be intercepted, resulting in a good filtration effect.

[0073] Furthermore, it also includes a fourth pipeline 120 for conveying the concentrated liquid, which is connected to the first pipeline 20. It is understood that this enables the independent discharge of high-concentration oily waste liquid.

[0074] Furthermore, the junction 130 of the fourth pipeline 120 and the first pipeline 20 is located on the input side of the first switching valve 80. This allows for a good flow diversion effect.

[0075] Furthermore, the fourth pipeline 120 is equipped with a second switch valve 140 for opening or closing the discharge of concentrated liquid. This allows control over whether the concentrated liquid is discharged, ensuring its proper and orderly discharge and preventing system overload or excessive pollutant levels.

[0076] Furthermore, a second pressure sensor 150 is provided at the confluence point 130;

[0077] Specifically, the oil content of the circulating fluid is determined by monitoring the pressure difference across the ceramic membrane module 10 using the first pressure sensor 100 and the second pressure sensor 150, respectively, to control the opening or closing of the second switching valve 140. It can be understood that by comparing the pressure difference between the inlet (first pressure sensor 100) and outlet (second pressure sensor 150) of the ceramic membrane module 10, the oil content of the circulating fluid can be determined, achieving intelligent discharge control. When the pressure difference increases, indicating an increase in oil content, the second switching valve 140 is automatically opened to discharge the concentrate. Simultaneously, a membrane protection mechanism is also included, which forces a shutdown when the pressure difference exceeds the limit to prevent membrane structure damage.

[0078] This utility model also has the following beneficial effects:

[0079] 1. Precise liquid level management: The arrangement of multiple liquid level sensors at 90° enables the system to monitor the liquid status in real time, preventing abnormalities such as overflow and dry running, and ensuring safe operation.

[0080] 2. Intelligent differential pressure monitoring: By monitoring the pressure difference between the two ends, it can not only determine the blockage of the membrane module, but also dynamically adjust the emission logic to avoid membrane fouling and extend its life.

[0081] 3. Flexible drainage mechanism: The fourth pipeline 120 and the second switch valve 140 are set up to achieve controllable discharge of concentrated liquid, making the system operation more flexible and efficient.

[0082] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A ceramic membrane filtration oil removal system characterized by, include: Ceramic membrane modules; The first conduit is connected at one end to the top of the ceramic membrane assembly; An oil-water separation circulation tank is connected to the other end of the first pipeline, and the end of the first pipeline is close to the top side of the oil-water separation circulation tank. The second pipeline has one end connected to the bottom of the ceramic membrane assembly and the other end connected to the bottom of the oil-separating circulation tank. The third conduit is connected at one end to the bottom side near the ceramic membrane assembly; A cleaning fluid storage tank is disposed adjacent to the oil-separating circulation tank and connected to the other end of the third pipeline near its bottom; and A circulating pump is installed on the second pipeline; The oil-containing concentrate in the oil-separating circulation tank is supplied to the ceramic membrane module for filtration and oil removal via the circulation pump, and the treated clean permeate is then delivered to the cleaning solution storage tank.

2. The ceramic membrane filtration oil removal system of claim 1, wherein, The first pipeline is equipped with a first switch valve for opening or closing the oil-containing concentrate to the oil-separating circulation tank.

3. The ceramic membrane filtration oil removal system of claim 1, wherein, The inner wall of the oil-separating circulation tank is equipped with several liquid level sensors along the vertical direction for monitoring the liquid level height in the oil-separating circulation tank.

4. The ceramic membrane filtration oil removal system of claim 2, wherein, The second pipeline is also equipped with a first pressure sensor, which is located between the ceramic membrane assembly and the circulation pump.

5. The ceramic membrane filtration oil removal system of claim 1, wherein, A liquid level separator is vertically installed between the oil-separating circulation tank and the cleaning fluid storage tank. The height of the liquid level separator is lower than the height of the oil-water separation circulation tank and the height of the cleaning fluid storage tank, so that the liquid at the top of the cleaning fluid storage tank overflows into the oil-water separation circulation tank.

6. The ceramic membrane filtration oil removal system of claim 5, wherein, The liquid level divider is equipped with a filter screen near its top for filtering overflow liquid.

7. The ceramic membrane filtration oil removal system of claim 4, wherein, Also includes: A fourth pipeline for conveying the concentrate, the fourth pipeline being connected to the first pipeline.

8. The ceramic membrane filtration oil removal system of claim 7, wherein, The junction of the fourth pipeline and the first pipeline is located on the input side of the first switching valve.

9. The ceramic membrane filtration oil removal system of claim 8, wherein, The fourth pipeline is equipped with a second switch valve for opening or closing the discharge of concentrated liquid.

10. The ceramic membrane filtration oil removal system of claim 9, wherein, A second pressure sensor is installed at the confluence point; Specifically, the oil content of the circulating fluid is determined by monitoring the pressure difference across the ceramic membrane assembly using the first pressure sensor and the second pressure sensor, respectively, in order to control the opening or closing of the second switching valve.

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