Separating device and filtering apparatus

Abstract

The utility model provides a separation device and filter equipment. In one aspect, the separation device is used to be arranged in the filter equipment to filter the fluid in the filter equipment, and the separation device comprises: a membrane separation element, comprising a filter membrane, and the membrane separation element has a hollow chamber defined by the filter membrane; and an ultrasonic cleaning component arranged inside the hollow chamber to clean the filter membrane through ultrasonic waves via the liquid inside and outside the hollow chamber. Thus, the online cleaning of the filter membrane in the filter equipment can be realized.

Description

Technical Field

[0001] This utility model relates to the field of separation and purification technology, and in particular to separation devices and filtration equipment. Background Technology

[0002] Membrane separation technology is a technique that uses a filtration membrane as its core to separate, concentrate, and purify the fluid to be filtered under external force. Compared with other separation technologies, membrane separation technology has significant advantages such as low energy consumption, high single-stage separation efficiency, simple separation process, and less environmental pollution. It is widely used in many fields such as petrochemicals, chemicals, biopharmaceuticals, wastewater treatment, and wastewater reuse.

[0003] However, during use, contaminants gradually accumulate on the surface of the filter membrane, causing its filtration flux to gradually decrease and eventually fail to meet filtration requirements. At this point, the filtration equipment usually needs to be shut down to clean the filter membrane or to replace it with a new one, severely impacting filtration efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a separation device and a filtration device to enable online cleaning of the filter membrane within the filtration device.

[0005] The technical solution of this utility model embodiment is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide a separation device for use within a filtration device to filter fluids inside and outside the filtration device. The separation device includes:

[0007] A membrane separation element includes a filter membrane, and the membrane separation element has a hollow chamber defined by the filter membrane; and

[0008] The ultrasonic cleaning component is located inside a hollow chamber to clean the filter membrane using ultrasonic waves passing through the liquid inside and outside the hollow chamber.

[0009] Optionally, for the separation device described above, the ultrasonic cleaning component includes a housing and an ultrasonic transducer element, and the ultrasonic transducer element is installed inside the housing.

[0010] Optionally, for the separation device described above, the separation device includes a fixed tube, and the wire connected to the ultrasonic transducer passes through the fixed tube.

[0011] Optionally, the separation device described above includes multiple ultrasonic cleaning components connected to a fixed tube.

[0012] Optionally, for the separation device described above, the plurality of ultrasonic cleaning components are connected in series via a fixed tube in the axial direction of the hollow cavity.

[0013] Optionally, for the separation device described above, the plurality of ultrasonic cleaning components are disposed on at least one of the circumferential inner wall and circumferential outer wall of the fixed tube.

[0014] Optionally, for the separation device described above, the plurality of ultrasonic cleaning components are arranged alternately in the axial direction of the fixed tube and / or spaced apart in the circumferential direction of the fixed tube.

[0015] Optionally, the separation device described above includes a plurality of ultrasonic cleaning components arranged along the circumferential direction of the hollow chamber and adjacent to the inner wall of the filter membrane, and a fluid channel is formed between each pair of adjacent ultrasonic cleaning components.

[0016] Optionally, for the separation device described above, the ultrasonic cleaning component and the membrane separation element are fixedly connected by a first connecting component.

[0017] Secondly, embodiments of the present invention provide a filtration device, which includes the separation device described in the first aspect.

[0018] This utility model provides a separation device and a filtration device; an ultrasonic cleaning component is set in the hollow cavity defined by the filter membrane, so as to clean the filter membrane by ultrasonic waves through the liquid inside and outside the hollow cavity, thereby realizing online cleaning of the filter membrane in the filtration device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a separation device provided according to an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of another separation device provided according to an embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram of another separation device provided according to an embodiment of the present utility model.

[0022] Figure 4 for Figure 3 Top view.

[0023] Figure 5 This is a schematic diagram of another separation device provided according to an embodiment of the present utility model.

[0024] Figure 6 for Figure 5 Top view.

[0025] Figure 7This is a schematic diagram of another separation device provided according to an embodiment of the present utility model.

[0026] Figure 8 for Figure 7 Top view.

[0027] Figure 9 This is a schematic diagram of a connection method between the ultrasonic cleaning component and the fixing tube according to an embodiment of the present invention.

[0028] Figure 10 This is a schematic diagram of an arrangement of multiple ultrasonic cleaning components according to an embodiment of the present invention.

[0029] Figure 11 for Figure 10 Top view.

[0030] Figure 12 This is a schematic diagram of another arrangement of multiple ultrasonic cleaning components according to an embodiment of the present invention.

[0031] Figure 13 for Figure 12 The corresponding top view.

[0032] Figure 14 This is a structural schematic diagram of a filtration device provided according to an embodiment of the present utility model. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] It should be noted that, for clarity, not all features of a particular embodiment are described or shown in the specification and drawings. Furthermore, to avoid unnecessary details obscuring the technical solution of interest to this utility model, only the device structure and parts closely related to the technical solution of this utility model are described and shown in the specification and drawings, while other details that are not closely related to the technical content of this utility model and are known to those skilled in the art are omitted.

[0035] As mentioned earlier, currently, cleaning the filter membrane requires shutting down the filtration equipment and removing the filter membrane for cleaning, which significantly prolongs the filtration cycle and affects filtration efficiency.

[0036] Ultrasonic cleaning technology, as a highly efficient cleaning method, works by using a high-frequency oscillation signal emitted by an ultrasonic generator. This signal is converted into high-frequency mechanical vibration by an ultrasonic transducer and propagates into the liquid. The instantaneous high pressure and shock waves generated by the cavitation effect are then used to achieve efficient cleaning of the surface of the workpiece. Therefore, this invention aims to apply ultrasonic cleaning technology to the cleaning of filter membranes and achieve online cleaning of filter membranes within filtration equipment.

[0037] Based on this, see Figure 1 It shows a separation device 1 provided by the present invention, which is installed in a filtration device ( Figure 1 (Not shown) A separation device 1 is used to filter fluid within a filtration apparatus. The separation device 1 includes:

[0038] A membrane separation element 10 includes a filter membrane 101 and has a hollow chamber 102 defined by the filter membrane 101; and

[0039] The ultrasonic cleaning component 20 is disposed inside the hollow chamber 102 to clean the filter membrane 101 by means of ultrasonic waves passing through the liquid inside and outside the hollow chamber 102.

[0040] In this invention, the membrane separation element 10 may include a filter membrane 101 and a support member (not shown in the figure) on which the filter membrane 101 is attached. However, the structure of the membrane separation element 10 is not specifically limited in this invention, as long as it enables the fluid in the filtration device to be filtered.

[0041] In some examples, the filter membrane of this invention is a semi-permeable material used to separate different substances in a mixture, typically having tiny pores that allow some substances to pass through while blocking others. It should be noted that the mixture mentioned above includes the fluid to be filtered.

[0042] In this invention, the ultrasonic cleaning component 20 is a cleaning component that includes an ultrasonic transducer element 30. In specific implementations, such as... Figure 1 As shown, the ultrasonic waves emitted by the ultrasonic cleaning component 20 ( Figure 1 (As shown by the dashed arrow in the image) The liquid inside the filtration device acts on the surface of the filter membrane 101, using the instantaneous high pressure and shock waves generated by the "cavitation effect" to clean the filter membrane 101. This "cavitation effect" ensures that the ultrasonic waves can act uniformly on the surface of the filter membrane 101, including areas that are difficult to clean in some related cleaning methods, thereby ensuring the consistency of the cleaning effect.

[0043] In some examples, the ultrasonic transducer 30 can be the ultrasonic transducer described above.

[0044] In the present utility model, by arranging the ultrasonic cleaning component 20 within the hollow chamber 102 defined by the filter membrane 101, when it is necessary to clean the filter membrane 101, ultrasonic waves can be directly emitted by the ultrasonic cleaning component 20, thereby causing the liquid inside and outside the hollow chamber 102 to vibrate, and then the pollutants on the surface of the filter membrane 101 can be peeled off under the action of the liquid vibration. In some examples, the surface of the ultrasonic cleaning component 20 for emitting ultrasonic waves faces the filter membrane 101.

[0045] It should be noted that, on the one hand, when the fluid to be filtered is a liquid, it is not necessary to stop the operation of the filtering device, and the originally existing fluid in the filtering device can be used to emit ultrasonic waves through the ultrasonic cleaning component 20 to remove the pollutants on the surface and in the pores of the filter membrane 101. In this case, it is not necessary to stop the filtering device, nor to stop the filtering of the fluid to be filtered, and the cleaning work of the filter membrane can be completed, realizing the non-intrusive online cleaning operation of the filter membrane 101 and the continuous production of the filtering device. On the other hand, when the fluid to be filtered is a gas, after the filtering device is stopped, a liquid is filled into the above-mentioned hollow chamber 102, and then ultrasonic waves are emitted by the ultrasonic cleaning component 20 to remove the pollutants on the surface and in the pores of the filter membrane 101. In this case, the liquid can be filled into the hollow chamber 102 at a set interval time to clean the filter membrane 101. After the cleaning is completed, the fluid to be filtered can be continuously introduced into the filtering device for filtering. In this case, the filter membrane 101 does not need to be disassembled during the cleaning of the filter membrane 101. Based on the above description, the separation device 1 provided by the present utility model can realize the online cleaning of the filter membrane 101 within the filtering device.

[0046] The above-mentioned online cleaning of the filter membrane 101 within the filtering device means that it is not necessary to stop the operation of the fluid filtering or disassemble the separation device 1 from the corresponding filtering device, and the filter membrane 101 can be directly cleaned.

[0047] In addition, different from the related cleaning methods, when the filter membrane 101 is ultrasonically cleaned, it mainly relies on physical effects, so no new substances are introduced, thereby reducing the risk of secondary pollution of the filter membrane 101 and ensuring the cleaning effect of the filter membrane 101.

[0048] In addition, in the present utility model, since the ultrasonic cleaning component 20 is arranged within the hollow chamber 102, its volume of the membrane separation element 10 can be fully utilized, and it will not have a negative impact on the volume of the filtering device.

[0049] The separation device 1 provided by this utility model has an ultrasonic cleaning component 20 set in the hollow cavity 102 defined by the filter membrane 101, so that the filter membrane 101 is cleaned by ultrasonic waves through the liquid inside and outside the hollow cavity 102, and the filter membrane 101 is cleaned online without the need to stop the filtration equipment.

[0050] Regarding the separation device 1 described above, in some possible embodiments, such as Figure 1 As shown, the ultrasonic cleaning component 20 includes a housing 201 and an ultrasonic transducer 30, and the ultrasonic transducer 30 is installed inside the housing 201.

[0051] As an electronic component, the ultrasonic transducer 30 must avoid contact with flammable, explosive, or corrosive gases or liquids during use. However, when using the filter membrane 101 to filter fluids within a filtration device or to clean the filter membrane 101 with liquid, these gases or liquids may possess flammable, explosive, or corrosive properties. Therefore, in this invention, the ultrasonic transducer 30 is installed inside the housing 201, preventing direct contact between the ultrasonic transducer 30 and these gases or liquids, thus avoiding damage or even malfunction.

[0052] Regarding the separation device 1 described above, in some possible embodiments, such as Figure 1 As shown, the separation device 1 includes a fixed tube 40, and a wire 50 connected to the ultrasonic transducer element 30. Figure 1 (As shown by the dashed line in the diagram) passes through the fixed tube 40.

[0053] In some examples, the aforementioned wire 50 is used for connection between ultrasonic transducer elements 30, and for electrical connection between ultrasonic transducer elements 30 and controller (not shown in the figure), thereby controlling the working state of ultrasonic cleaning component 20 based on the controller's instructions.

[0054] Regarding the separation device 1 described above, in some possible embodiments, such as Figures 2 to 9 As shown, the separation device 1 includes a plurality of ultrasonic cleaning components 20, which are connected to the fixed tube 40.

[0055] By incorporating multiple ultrasonic cleaning components 20, the ultrasonic cleaning effect is improved, and overload operation of a single ultrasonic cleaning component 20 is avoided, thereby extending the service life of each ultrasonic transducer element 30. Furthermore, the connection of multiple ultrasonic cleaning components 20 via a fixing tube 40 prevents displacement of the ultrasonic cleaning components 20 and thus the separation device 1 due to ultrasonic vibration or external forces, ensuring the structural stability of the ultrasonic cleaning components 20 and thus the separation device 1. Moreover, the wires used to connect the multiple ultrasonic cleaning components 20 can also pass through the fixing tube 40, preventing contact between the wires and the fluid inside the hollow cavity 102, thus preventing wire damage or even short circuits.

[0056] In some possible implementations, such as Figure 2 As shown, the multiple ultrasonic cleaning components 20 are connected in series in the axial direction of the hollow cavity 102 via a fixed tube 40.

[0057] In this configuration, multiple ultrasonic cleaning components 20 are arranged along the axial direction of the hollow chamber 102, enabling ultrasonic energy to completely cover the filter membrane 101 in the axial direction of the hollow chamber 102 with a smaller number of ultrasonic cleaning components 20. This not only saves costs but also ensures that all areas of the filter membrane 101 in the axial direction of the hollow chamber 102 are adequately cleaned.

[0058] In some possible implementations, such as Figure 3 and Figure 4 As shown, the plurality of ultrasonic cleaning components 20 are disposed on the circumferential inner wall of the fixed tube 40.

[0059] In this way, the ultrasonic cleaning component 20 is located inside the fixed tube 40, which can enhance the protection of the ultrasonic cleaning component 20 and reduce the possibility of failure.

[0060] In some possible implementations, such as Figures 5 to 9 As shown, the plurality of ultrasonic cleaning components 20 are disposed on the circumferential outer wall of the fixed tube 40.

[0061] In this way, the ultrasonic waves emitted by the ultrasonic cleaning component 20 can directly act on the filter membrane through the liquid in the filtration device without passing through the circumferential wall of the fixed tube 40, thereby improving the ultrasonic cleaning effect.

[0062] It is conceivable that the plurality of ultrasonic cleaning components 20 can also be disposed on both the inner and outer circumferential walls. That is, a portion of the plurality of ultrasonic cleaning components 20 is disposed on the inner circumferential wall of the fixed tube 40, and another portion is disposed on the outer circumferential wall of the fixed tube 40.

[0063] In some possible implementations, such as Figure 3 and Figure 4 As shown, the multiple ultrasonic cleaning components 20 are arranged in a staggered manner in the axial direction of the fixed tube 40.

[0064] In this way, precise cleaning can be achieved by adjusting the power or working state of the ultrasonic transducer element 30 in the corresponding ultrasonic cleaning component 20 according to the degree of contamination in different areas of the filter membrane 101, thereby saving consumable costs while ensuring the cleaning effect.

[0065] Understandable, Figure 3 The diagram shows the case where the plurality of ultrasonic cleaning components 20 are disposed on the circumferential inner wall of the fixed tube 40, and the plurality of ultrasonic cleaning components 20 are staggered in the axial direction of the fixed tube 40. However, it is also possible to arrange them as follows: Figure 5 As shown, when the plurality of ultrasonic cleaning components 20 are disposed on the circumferential outer wall of the fixed tube 40, the plurality of ultrasonic cleaning components 20 are staggered in the axial direction of the fixed tube 40.

[0066] To improve the cleaning effect on various regions of the filter membrane 101 surface in the circumferential direction, in some possible embodiments of the separation device 1 described above, such as... Figures 5 to 9 As shown, the multiple ultrasonic cleaning components 20 are arranged at intervals along the circumferential direction of the fixed tube 40.

[0067] It should be noted that, in this invention, the arrangement of the multiple ultrasonic cleaning components 20 along the circumferential direction of the fixed tube 40 is not limited to... Figures 5 to 9 The layout shown is as follows. For example, although in Figure 8 As can be seen in the top view of the separation device 1, four ultrasonic cleaning components 20 are arranged along the circumferential direction of the fixed tube 40. However, in the actual implementation, more or fewer ultrasonic cleaning components 20 may be arranged.

[0068] It is also understandable that Figures 5 to 9 The diagram shows the case where the plurality of ultrasonic cleaning components 20 are disposed on the circumferential outer wall of the fixed tube 40, with the plurality of ultrasonic cleaning components 20 spaced apart along the circumferential direction of the fixed tube 40. However, it may also be as follows: Figure 3 As shown, when the plurality of ultrasonic cleaning components 20 are disposed on the circumferential inner wall of the fixed tube 40, the plurality of ultrasonic cleaning components 20 are arranged at intervals along the circumferential direction of the fixed tube 40.

[0069] Furthermore, in this invention, the cross-sectional shape of the fixing tube 40 is not limited to... Figure 6 and Figure 8 The circle shown can also be as follows: Figure 9 The square or other shape shown.

[0070] Furthermore, in specific implementation processes, for the aforementioned separation device 1, in some possible embodiments, such as Figures 10 to 13 As shown, the separation device 1 includes a plurality of ultrasonic cleaning components 20 arranged along the circumferential direction of the hollow chamber 102 and adjacent to the inner wall 1011 of the filter membrane 101, and a fluid channel 60 is formed between each pair of adjacent ultrasonic cleaning components 20.

[0071] It should be noted that, Figures 10 to 13 Only a partial arrangement of the multiple ultrasonic cleaning components 20 in this embodiment of the present invention is shown. The specific arrangement can also be adjusted according to the actual situation.

[0072] In the above embodiment, multiple ultrasonic cleaning components 20 are arranged along the circumferential direction of the hollow cavity 102, and the multiple ultrasonic cleaning components 20 are adjacent to the inner wall 1011 of the filter membrane 101, so that the ultrasonic cleaning components 20 and the filter membrane 101 are closer, thereby minimizing the loss of ultrasonic energy during propagation, improving the utilization efficiency of ultrasonic energy, and thus achieving a more efficient cleaning effect.

[0073] A fluid channel 60 is provided between every two adjacent ultrasonic cleaning components 20 in the circumferential direction of the hollow chamber 102, so that when the fluid in the filtration device is filtered by the filter membrane 101, the fluid can flow in the fluid channel 60 and flow out of the separation device 1 through the fluid channel 60, and then be discharged from the filtration device.

[0074] To further improve the structural stability of the separation device 1, in some possible embodiments, the ultrasonic cleaning component 20 is fixedly connected to the membrane separation element 10. Furthermore, the fixed connection between the ultrasonic cleaning component 20 and the membrane separation element 10 makes the membrane separation element 10 and the ultrasonic cleaning component 20 a single unit, making installation or replacement easier.

[0075] In some examples, the ultrasonic cleaning component 20 is fixedly connected to the membrane separation element 10, specifically including but not limited to a detachable connection. For example, as... Figure 1 As shown, the membrane separation element 10 and the ultrasonic cleaning component 20 can be connected via a first connector 70. This first connector 70 can be a bolt. Of course, in practice, the ultrasonic cleaning component 20 and the membrane separation element 10 can also be connected via other methods, such as welding.

[0076] In order to enable the wire 50 connected to the ultrasonic transducer 30 to be connected to a controller located outside the filtration device, in some possible embodiments of the separation device 1 described above, the fixing tube 40 extends out of the hollow chamber 102 so as to guide the wire 50 to extend out of the hollow chamber 102 without contacting the fluid inside the hollow chamber 102, or even to the outside of the filtration device.

[0077] In some examples, for example Figure 10 As shown, the separation device 1 is also provided with a first outlet 80 so that the fluid entering the separation device 1 can flow out of the separation device 1.

[0078] In another example, the fixed tube 40 is fixedly connected to the first outlet 80.

[0079] Finally, as Figure 14 As shown, it illustrates a filtration device 14 provided by an embodiment of the present invention. Specifically, the filtration device 14 includes a separation device 1 as described in the foregoing technical solution, for filtering the fluid within the filtration device 14.

[0080] In some examples, the separation device 1 is fixedly disposed within the filtration device 14. For example, a second connecting member 90 is provided in the separation device 1, which is fixedly connected to the fixing member 141 in the filtration device 14. The fixing member 141 may be a perforated sieve plate structure, which is not specifically limited in this invention.

[0081] In some examples, the filtration device 14 also includes an inlet 142, a second outlet 143, and a third outlet 144, wherein,

[0082] The inlet 142 is used for fluid to enter the filter device 14. For example, the fluid to be filtered enters the filter device 14 through the inlet 142, or the liquid used to clean the filter membrane 101 enters the filter device 14 through the inlet 142.

[0083] The second outlet 143 is used for fluid discharge from the filter device 14. For example, filtered fluid is discharged from the filter device 14 through the second outlet 143, or liquid used to clean the filter membrane 101 enters the filter device 14 through the second outlet 143.

[0084] The third outlet 144 is used to discharge the contaminants formed after the fluid to be filtered from the filtration device 14, or to discharge the liquid after cleaning the filter membrane 101 from the filtration device 14 through the third outlet 144.

[0085] It should be noted that, in Figure 14The illustration only shows the case where three separation devices 1 are installed in the filter device 14. However, the number of separation devices 1 in the filter device 14 can be determined according to the actual situation, and this utility model does not make a specific limitation in this regard. Furthermore, the installation method of the separation devices 1 in the filter device 14 is not limited to... Figure 14 As shown, the separating device 1 is connected to the fixing member 141 located at the top of the filtering device 1 via the second connecting member 90. Of course, in some examples, the fixing member 141 can also be located at the bottom of the filtering device 1, thereby... Figure 7 The separation device 1 shown is installed inside the filter equipment 14 via a fastener 14.

[0086] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A separation device for being arranged in a filtration apparatus for filtering a fluid in the filtration apparatus, characterized in that, The separation device includes: a membrane separation element including a filtration membrane, and the membrane separation element has a hollow chamber defined by the filtration membrane; and a plurality of ultrasonic cleaning components disposed inside the hollow chamber along a circumferential direction of the hollow chamber and adjacent to an inner wall of the filtration membrane to clean the filtration membrane by ultrasonic waves via liquid outside and inside the hollow chamber, and a fluid passage is formed between every two adjacent ultrasonic cleaning components.

2. The separation device of claim 1, wherein, The ultrasonic cleaning component includes a housing and an ultrasonic transducing element, and the ultrasonic transducing element is installed in the housing.

3. The separation device of claim 2, wherein, The separation device includes a fixed tube, and a wire connected to the ultrasonic transducing element passes through the fixed tube.

4. The separation device of claim 3, wherein, A plurality of the ultrasonic cleaning components are connected to the fixed tube.

5. The separation device of claim 4, wherein, A plurality of the ultrasonic cleaning components are connected in series in an axial direction of the hollow chamber through the fixed tube.

6. The separation device of claim 4, wherein, A plurality of the ultrasonic cleaning components are disposed on a circumferential outer wall of the fixed tube.

7. The separation device of claim 6, wherein, A plurality of the ultrasonic cleaning components are staggered in an axial direction of the fixed tube and / or are spaced apart along a circumferential direction of the fixed tube.

8. The separation device of any one of claims 1 to 7, wherein, The ultrasonic cleaning component is fixedly connected to the membrane separation element by a first connecting component.

9. A filter device, characterized by The filtration device includes the separation device according to any one of claims 1 to 8.

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