Ultrasonic automatic cleaning of ceramic membrane filters

Abstract

The present invention provides an ultrasonically automatically cleaned ceramic membrane filter, which belongs to the field of filtration and separation technology and comprises: a shell unit, a tubular ceramic membrane arranged inside the shell unit, at least two partition plates are arranged inside the shell unit, the partition plates divide the internal space of the shell unit into at least three spaces, a connecting component is used to limit the position of a vibration unit, the vibration unit is used to generate vibration energy, and the vibration energy is transferred to the tubular ceramic membrane through the liquid in the filter chamber, thereby playing the effect of cleaning the tubular ceramic membrane; using such an ultrasonically automatically cleaned ceramic membrane filter, a changing magnetic field is generated by an electromagnetic coil outside the shell unit, and the vibration unit inside the filter chamber can generate expansion and contraction deformation according to the magnetic field, and the expansion and contraction deformation generates vibration waves, and the vibration waves transfer energy to the surface of the tubular ceramic membrane through the clean water medium in the filter chamber, thereby playing the role of cleaning blockages.

Description

Technical Field

[0001] The invention belongs to the technical field of filtration and separation, and more particularly relates to an ultrasonic automatic cleaning ceramic membrane filter. Background Art

[0002] Ceramic membrane filtration technology is primarily used to address livestock manure pollution and achieve resource recycling. Through physical screening, it efficiently removes over 99% of suspended solids, pathogens, and organic pollutants from manure, ensuring compliance with discharge standards. It also recycles clean water and nutrient-rich concentrate, significantly reducing fresh water consumption and allowing for the extraction of organic fertilizer raw materials.

[0003] Manure water undergoes pretreatment, such as solid-liquid separation and pH adjustment, before entering a ceramic membrane system for cross-flow filtration at a pressure of 0.1-0.5 MPa. Microfiltration / ultrafiltration membranes separate the wastewater into clean water and concentrate. The clean water is used for irrigation, while the concentrate is used to make fertilizer or produce biogas.

[0004] In existing technologies, systems maintain stable membrane flux and prevent clogging of the ceramic membrane by periodically backwashing. However, this method cannot remove debris that adheres tightly to the surface of the ceramic membrane during backwashing, resulting in low filtration efficiency. Summary of the Invention

[0005] Based on this, the object of the present invention is to provide an ultrasonic automatic cleaning ceramic membrane filter, the ceramic membrane filter comprising: a shell unit, a tubular ceramic membrane arranged inside the shell unit, at least two partition plates are arranged in the shell unit, the partition plates divide the internal space of the shell unit into at least three spaces, including a liquid inlet cavity, a liquid outlet cavity, and a filter cavity arranged between the liquid inlet cavity and the liquid outlet cavity; the two ends of the tubular ceramic membrane are respectively arranged in the liquid inlet cavity and the liquid outlet cavity, and pass through the filter cavity; the liquid inlet cavity, the liquid outlet cavity and the filter cavity are respectively provided with a liquid inlet, a liquid outlet and a filter port; the liquid to be filtered is input into the liquid inlet cavity through the liquid inlet and then enters the tubular ceramic membrane, the liquid that passes through the filtration in the tubular ceramic membrane penetrates to the outside of the tubular ceramic membrane and is output through the filter port, and the liquid that does not pass through the filtration flows into the liquid outlet cavity and flows out through the liquid outlet;

[0006] A vibration unit and a connecting component connecting the vibration unit to the shell unit are provided in the filter cavity. The connecting component is used to limit the position of the vibration unit. The vibration unit is used to generate vibration energy. The vibration energy is transmitted to the tubular ceramic membrane through the liquid in the filter cavity, thereby cleaning the tubular ceramic membrane.

[0007] Preferably, the vibration unit is made of magnetostrictive material, and an electromagnetic coil is provided outside the shell unit. The electromagnetic coil can be connected to a power source, and when powered on, it generates a magnetic field and drives the vibration unit to vibrate.

[0008] Preferably, a plurality of tubular ceramic membranes are arranged inside the shell unit, and the two ends of the plurality of tubular ceramic membranes are respectively arranged in the liquid inlet cavity and the liquid outlet cavity. The plurality of tubular ceramic membranes pass through the filter cavity and are parallel to each other in the filter cavity; the vibration unit is arranged in the gap between the tubular ceramic membrane and the adjacent tubular ceramic membrane, and the vibration generated by the vibration unit can clean the surface of the tubular ceramic membrane near it.

[0009] Preferably, the connecting assembly includes an axial connecting piece, the length direction of the axial connecting piece is parallel to the length direction of the tubular ceramic membrane; both ends of the axial connecting piece are respectively connected to the partition plates on both sides of the filter cavity;

[0010] The axial connecting piece is made of flexible material, and the vibration unit is sleeved on the axial connecting piece.

[0011] Preferably, a plurality of vibration units are provided on the axial connecting member along the length direction, and the vibration units are in a circular ring shape and are sleeved on the outer side of the axial connecting member; an annular sleeve is also provided on the axial connecting member, and the annular sleeve is arranged between two adjacent vibration units. The annular sleeve is made of flexible material, and is used to keep a distance between the vibration unit and the adjacent vibration unit to avoid mutual collision during vibration, causing noise and energy loss.

[0012] Preferably, a plurality of axial connectors are provided inside the filter cavity, and the plurality of axial connectors are distributed in an annular shape; the connection assembly further includes an annular connector;

[0013] The annular connector includes a supporting portion in the shape of a circular ring, and also includes a plurality of clips arranged at intervals on the supporting portion, the clips are used to connect with the axial connector, and the annular connector is used to maintain the positions of the plurality of axial connectors in the length direction of the filter cavity, preventing the axial connectors from contacting other axial connectors, and avoiding the vibration units on the plurality of axial connectors from colliding with each other during vibration, causing noise and energy loss.

[0014] Preferably, a plurality of annular connectors are provided inside the filter cavity, and the plurality of annular connectors are spaced apart in the length direction of the axial connector. The plurality of annular connectors are used to keep the axial connector in position in the length direction to avoid contact between the vibration unit and the inner wall of the filter cavity or the tubular ceramic membrane.

[0015] Preferably, the plurality of axial connectors form two rings, the two rings being an inner ring and an outer ring, the inner ring and the outer ring being concentric; the ring connector is used to connect the inner ring;

[0016] The connecting assembly also includes a radial connecting piece, which is arranged along the radial direction of the filter cavity. The radial connecting piece is used to connect the axial connecting piece of the inner ring and the axial connecting piece of the outer ring. The radial connecting piece is used to keep the vibration units of the inner ring and the outer ring apart to prevent the vibration units of the inner ring and the outer ring from colliding with each other.

[0017] Preferably, a plurality of radial connectors are provided inside the filter cavity, and a plurality of radial connectors are spaced apart in the circumferential direction of the annular connector.

[0018] Preferably, the shell unit is provided with multiple sections in the length direction, each section is provided with an independent electromagnetic coil, and the shell unit is provided with multiple electromagnetic coils in the length direction, each electromagnetic coil corresponds to the vibration unit inside each section, and independent control of each electromagnetic coil can control the operation of the vibration unit in each section respectively.

[0019] Beneficial effect: According to an embodiment of the present invention, an ultrasonic automatic cleaning ceramic membrane filter generates a changing magnetic field through the electromagnetic coil outside the shell unit, and the vibration unit inside the filter cavity can generate expansion and contraction deformation according to the magnetic field, and the expansion and contraction deformation generates vibration waves. The vibration waves transfer energy to the surface of the tubular ceramic membrane through the clean water medium in the filter cavity, thereby playing a role in clearing blockages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present disclosure includes accompanying drawings, which should be considered as included in and constitute a part of the specification and, together with the specification, illustrate various exemplary embodiments, features, and aspects of the present disclosure and are used to explain the principles of the present disclosure. The present disclosure will be more fully understood through the following detailed description in conjunction with the accompanying drawings. Among them:

[0021] Figure 1 is a schematic diagram of a ceramic membrane filter for automatic ultrasonic cleaning according to an embodiment of the present invention;

[0022] Figure 2 2. It is a schematic diagram of the internal structure of a ceramic membrane filter for automatic ultrasonic cleaning according to an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 Schematic diagram of a filter cavity of a ceramic membrane filter for automatic ultrasonic cleaning according to an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of a liquid inlet cavity of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention;

[0026] Figure 62. It is a schematic diagram of the internal structure of a housing unit of a ceramic membrane filter for ultrasonic automatic cleaning according to an embodiment of the present invention;

[0027] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0028] Figure 8 yes Figure 6 A partial enlarged view of point C in the middle;

[0029] Figure 9 Schematic diagram of an annular connector and a radial connector of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention;

[0030] Figure 10 1 is a schematic diagram of an end cap assembly of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention;

[0031] Figure 11 Schematic diagram of an axial connector of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention;

[0032] Figure 12 yes Figure 11 A partial enlarged view of point D in the middle;

[0033] Among them: shell unit 11, tubular ceramic membrane 12, liquid inlet 13, liquid outlet 14, filter port 15, vibration unit 16, electromagnetic coil 17, protective shell 18, inner plate 21, outer plate 22, small sealing ring 23, large sealing ring 24, axial connector 31, annular sleeve 32, knot 33, rod 34, annular connector 41, buckle 42, radial connector 43. DETAILED DESCRIPTION

[0034] The technical solutions of the present invention are further described in detail below through examples and in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

[0035] Ceramic membrane filtration technology is primarily used to address livestock manure pollution and achieve resource recycling. Through physical screening, it efficiently removes over 99% of suspended solids, pathogens, and organic pollutants from manure, ensuring compliance with discharge standards. It also recycles clean water and nutrient-rich concentrate, significantly reducing fresh water consumption and allowing for the extraction of organic fertilizer raw materials.

[0036] Manure water undergoes pretreatment, such as solid-liquid separation and pH adjustment, before entering a ceramic membrane system for cross-flow filtration at a pressure of 0.1-0.5 MPa. Microfiltration / ultrafiltration membranes separate the wastewater into clean water and concentrate. The clean water is used for irrigation, while the concentrate is used to make fertilizer or produce biogas.

[0037] In existing technologies, systems maintain stable membrane flux and prevent clogging of the ceramic membrane by periodically backwashing. However, this method cannot remove debris that adheres tightly to the surface of the ceramic membrane during backwashing, resulting in low filtration efficiency.

[0038] In order to solve the above problems, the object of the present invention is to provide an ultrasonic automatic cleaning ceramic membrane filter, the ceramic membrane filter comprising: a shell unit 11, a tubular ceramic membrane 12 arranged inside the shell unit 11, at least two partitions are provided in the shell unit 11, the partitions divide the internal space of the shell unit 11 into at least three spaces, including a liquid inlet chamber, a liquid outlet chamber, and a filter chamber arranged between the liquid inlet chamber and the liquid outlet chamber; the two ends of the tubular ceramic membrane 12 are respectively arranged in the liquid inlet chamber and the liquid outlet chamber, and pass through the filter chamber; the liquid inlet chamber, the liquid outlet chamber and the filter chamber are respectively provided with a liquid inlet 13, a liquid outlet 14 and a filter port 15; the liquid to be filtered is input into the liquid inlet chamber through the liquid inlet 13 and then enters the tubular ceramic membrane 12, the liquid filtered in the tubular ceramic membrane 12 penetrates to the outside of the tubular ceramic membrane 12 and is output through the filter port 15, and the liquid that has not passed the filtration flows into the liquid outlet chamber and flows out through the liquid outlet 14;

[0039] A vibration unit 16 and a connecting component connecting the vibration unit 16 to the shell unit 11 are provided in the filter chamber. The connecting component is used to limit the position of the vibration unit 16. The vibration unit 16 is used to generate vibration energy. The vibration energy is transmitted to the tubular ceramic membrane 12 through the liquid in the filter chamber, thereby cleaning the tubular ceramic membrane 12.

[0040] In this embodiment, Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 As shown, the housing unit 11 is cylindrical and hollow inside. The tubular ceramic membrane 12 is a precision separation membrane made of inorganic ceramic material and has a tubular structure. It boasts excellent chemical and thermal stability, mechanical strength, long life, and superior separation performance. It plays an important role in numerous industrial fields requiring demanding separation conditions or high membrane performance. It is particularly suitable for processing complex fluid systems involving high temperatures, strong acids and bases, organic solvents, or those requiring aggressive cleaning.

[0041] Driven by pressure, the fluid to be treated enters the inlet chamber and flows through the tube. Small molecules or particles smaller than the membrane pore size in the fluid can penetrate the micropores in the membrane wall, permeate the outside of the tubular ceramic membrane 12, and exit through the filter port 15 as the permeate. Particles larger than the membrane pore size, colloids, macromolecules, bacteria, and even partially soluble substances are trapped in the membrane tube, enter the outlet chamber, and exit through the outlet 14 as the concentrated liquid.

[0042] As the filtration continues, a large amount of matter adheres to the tubular ceramic membrane 12. Usually, in order to clean the matter adhered to the tubular ceramic membrane 12, the filter port 15 is connected to a pressurized water source to flush the matter adhered to the tubular ceramic membrane 12. This process is backwashing.

[0043] In some embodiments, two filter ports 15 are respectively provided on both sides of the filter cavity. During backwashing, one filter port 15 serves as an input port, and the other filter port 15 serves as an output port for backwashing.

[0044] The vibration unit 16 is a component that can generate vibration and is arranged inside the filter cavity and outside the tubular ceramic membrane 12. During backwashing, the filter cavity is filled with liquid. The vibration energy generated by the vibration unit 16 can transmit the vibration energy through the liquid as a medium. The vibration energy acts on the tubular ceramic membrane 12, so that the substances attached to the tubular ceramic membrane 12 are separated from the tubular ceramic membrane 12 and discharged to the outside of the shell unit 11 together with the backwashing liquid.

[0045] Furthermore, the vibration unit 16 is made of magnetostrictive material, and an electromagnetic coil 17 is provided outside the housing unit 11. The electromagnetic coil 17 can be connected to a power source, and when powered on, generates a magnetic field to drive the vibration unit 16 to vibrate.

[0046] Magnetostrictive materials are a class of smart materials that can convert magnetic energy into mechanical energy and vice versa. When an external magnetic field is applied, the material's shape or size reversibly expands or contracts.

[0047] In a specific implementation, the magnetostrictive material may be a rare earth-iron alloy. When the electromagnetic coil 17 is connected to an alternating current, a changing magnetic field is generated, and the magnetostrictive material deforms with the change in the magnetic field, thereby generating a vibration wave.

[0048] It is preferred that Figure 6 、 Figure 7 As shown, a protective shell 18 is further provided on the outer side of the housing unit, and the protective shell 18 is used to protect the electromagnetic coil 17 .

[0049] Furthermore, a plurality of tubular ceramic membranes 12 are arranged inside the shell unit 11, and the two ends of the plurality of tubular ceramic membranes 12 are respectively arranged in the liquid inlet cavity and the liquid outlet cavity. The plurality of tubular ceramic membranes 12 pass through the filter cavity and are parallel to each other in the filter cavity; the vibration unit 16 is arranged in the gap between the tubular ceramic membrane 12 and the adjacent tubular ceramic membrane 12, and the vibration generated by the vibration unit 16 can clean the surface of the tubular ceramic membrane 12 near it.

[0050] In this embodiment, Figure 5The multiple tubular ceramic membranes 12 shown can improve the filtration efficiency. In this embodiment, seven tubular ceramic membranes 12 are arranged in the housing unit 11, one of which is arranged in the center and the other six are arranged in a ring shape.

[0051] In the specific implementation process, Figure 10 As shown, the partition plate includes two layers of plates, namely an inner plate 21 close to the filter cavity and an outer plate 22 close to the liquid inlet cavity or the liquid outlet cavity. The inner plate 21 and the outer plate 22 are both provided with through holes that match the shape and position of the tubular ceramic membrane 12. The end of the tubular ceramic membrane 12 passes through the inner plate 21 and the outer plate 22 through the through holes. An annular sealing ring is provided between the inner plate 21 and the outer plate 22. The annular sealing ring includes a small sealing ring 23 and a large sealing ring 24. The small sealing ring 23 is sleeved on the outside of each tubular ceramic membrane 12, and the large sealing ring 24 wraps all the small sealing rings 23. Fasteners are also provided between the inner plate 21 and the outer plate 22. Fastener holes are also provided on the inner plate 21 and the outer plate 22. The fasteners are bolts and nuts that match them. The fasteners can clamp the inner plate 21 and the outer plate 22 and squeeze the sealing ring at the same time, thereby increasing the airtightness. It is ensured that the fluid enters the tubular ceramic membrane 12 from the end of the tubular ceramic membrane 12 .

[0052] Furthermore, the connection assembly includes an axial connection member 31, the length direction of the axial connection member 31 is parallel to the length direction of the tubular ceramic membrane 12; both ends of the axial connection member 31 are respectively connected to the partition plates on both sides of the filter cavity;

[0053] The axial connection member 31 is made of a flexible material, and the vibration unit 16 is sleeved on the axial connection member 31 .

[0054] In this embodiment, Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 11 、 Figure 12 As shown, the axial connecting member 31 can be a flexible rope, specifically a rubber rope or a textile rope. The vibration unit 16 is configured into a circular ring shape and is sleeved on the axial connecting member 31 .

[0055] Preferably, one end of the axial connector 31 passes through one partition plate, while the other end is threadedly connected to the other partition plate. Specifically, the inner plate 21 of one partition plate has a rope hole, through which the axial connector 31 is passed and secured with a knot 33. The inner plate 21 of the other partition plate has a threaded hole, and the end of the axial connector 31 is provided with an externally threaded rod 34. Rotating the rod 34 adjusts the relative position of the rod 34 and the partition plate, thereby tightening the axial connector 31.

[0056] Furthermore, a plurality of vibration units 16 are provided on the axial connecting member 31 along the length direction. The vibration unit 16 is in a circular ring shape and is sleeved on the outer side of the axial connecting member 31. An annular sleeve 32 is also provided on the axial connecting member 31. The annular sleeve 32 is arranged between two adjacent vibration units 16. The annular sleeve 32 is made of a flexible material. The annular sleeve 32 is used to keep a distance between the vibration unit 16 and the adjacent vibration unit 16 to avoid collision during vibration, causing noise and energy loss.

[0057] In this embodiment, Figure 3 、 Figure 6 、 Figure 8 As shown, a plurality of vibration units 16 are provided on an axial connection member 31. The vibration units 16 are annular and sleeved on the outside of the axial connection member 31. An annular sleeve 32 is provided between the vibration units 16 and adjacent vibration units 16. The annular sleeve 32 is also annular and made of a flexible material. The annular sleeve 32 is used to maintain a distance between the vibration units 16 and adjacent vibration units 16 to prevent collisions during vibration, thereby causing noise and energy loss.

[0058] Preferably, both end edges of the vibration unit 16 are provided with chamfers, which can make the direction of the vibration wave obliquely forward, so that the vibration waves generated by two adjacent vibration units 16 working simultaneously can be superimposed to increase energy.

[0059] Preferably, a plurality of knots 33 are provided at intervals on the axial connector 31, and a plurality of vibration units 16 are provided between each of the knots 33. The knots 33 divide the vibration units 16 into different regions. In a specific implementation, the knots 33 can be used to restrict the positions of some vibration units 16 to areas near the tubular ceramic membrane 12 where accumulation is likely to occur.

[0060] Furthermore, a plurality of axial connectors 31 are provided inside the filter cavity, and the plurality of axial connectors 31 are distributed in an annular shape; the connection assembly further includes an annular connector 41;

[0061] The annular connector 41 includes a supporting portion in the shape of a circular ring, and also includes a plurality of clips 42 arranged at intervals on the supporting portion. The clips 42 are used to connect with the axial connector 31. The annular connector 41 is used to maintain the positions of the plurality of axial connectors 31 in the length direction of the filter cavity, to prevent the axial connector 31 from contacting other axial connectors 31, and to avoid the vibration units 16 on the plurality of axial connectors 31 from colliding with each other during vibration, causing noise and energy loss.

[0062] In this embodiment, the plurality of axial connectors 31 are parallel to each other and are arranged between the partition plates on both sides of the filter cavity. Figure 9As shown, the annular connector 41 is a circular support portion made of an elastic material, which can be metal or plastic. The buckle 42 can be sleeved onto the axial connector 31 or onto the annular sleeve 32 on the axial connector 31. The annular connector 41 can provide support along the length of the axial connector 31, maintaining the distance between the multiple axial connectors 31, preventing the axial connectors 31 from contacting each other, and preventing the vibration units 16 from colliding with each other and causing energy loss.

[0063] Furthermore, a plurality of annular connectors 41 are provided inside the filter cavity, and the plurality of annular connectors 41 are arranged at intervals in the length direction of the axial connector 31. The plurality of annular connectors 41 are used to keep the axial connector 31 in position in the length direction to prevent the vibration unit 16 from contacting the inner wall of the filter cavity or the tubular ceramic membrane 12.

[0064] In the specific implementation process, multiple annular connectors 41 are arranged inside the filter cavity. For the axial connector 31 with a longer length, multiple annular connectors 41 are arranged in the length direction of the axial connector 31 to enable the axial connector 31 to maintain its position in the length direction, thereby avoiding collision between the vibration unit 16 and other vibration units 16 or the inner wall of the filter cavity.

[0065] Furthermore, the plurality of axial connectors 31 form two rings, the two rings being an inner ring and an outer ring, and the inner ring and the outer ring are concentric; the annular connector 41 is used to connect the inner ring;

[0066] The connecting assembly also includes a radial connecting member 43, which is arranged along the radial direction of the filter cavity. The radial connecting member 43 is used to connect the axial connecting member 31 of the inner ring and the axial connecting member 31 of the outer ring. The radial connecting member 43 is used to keep the vibration units 16 of the inner ring and the outer ring at a distance to prevent the vibration units 16 of the inner ring and the outer ring from colliding with each other.

[0067] In some embodiments, the annular connector 41 can be a ring that connects the inner ring's axial connector 31. In some embodiments, the connector can be two concentric rings, one connecting the inner ring's axial connector 31 and the other connecting the outer ring's axial connector 31. The two rings are connected by a radial connector 43.

[0068] The radial connector 43 is arranged along the diameter direction of the filter cavity, and the radial connector 43 can be made of elastic material. In some embodiments, the radial connector 43 can also be provided with a plurality of bending shapes for shock absorption.

[0069] Furthermore, a plurality of radial connectors 43 are provided inside the filter cavity, and a plurality of radial connectors 43 are spaced apart in the circumferential direction of the annular connector 41 .

[0070] In this embodiment, the plurality of radial connectors 43 are arranged in a divergent shape, and the plurality of radial connectors 43 are spaced apart in the circumferential direction of the annular connector 41 , so as to evenly connect the two concentric annular connectors 41 .

[0071] Furthermore, the shell unit 11 is provided with multiple sections in the length direction, and each section is provided with an independent electromagnetic coil 17. The shell unit 11 is provided with multiple electromagnetic coils 17 in the length direction, and each electromagnetic coil 17 corresponds to the vibration unit 16 inside each section. Independently controlling each electromagnetic coil 17 can control the operation of the vibration unit 16 in each section.

[0072] In this embodiment, the housing unit 11 is provided with multiple sections along its length, and the electromagnetic coil 17 of each section can be independently controlled. In the specific implementation process, energy can be concentrated on the electromagnetic coil 17 of a certain section to increase the vibration energy and remove stubborn attachments.

[0073] In some embodiments, the annular connector 41 may be disposed between the two sections, and the electromagnetic coil 17 is not disposed between the two sections, so as to avoid eddy currents on the annular connector 41 when the electromagnetic coil 17 is working, thereby generating unnecessary heat.

[0074] The various embodiments disclosed in the present invention have been described above. The above description is exemplary and not exhaustive, and the scope of the present invention is not limited to the above embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the spirit and scope of the present invention. That is to say, those skilled in the art can make various changes and improvements to the present invention in form and detail, and these are all considered to fall within the scope of protection of the present invention. The choice of terms used in this article is intended to best explain the principles of the various embodiments, practical applications or improvements to the technology in the market, or to enable those skilled in the art to understand the various embodiments disclosed herein.

Claims

1. A ceramic membrane filter with ultrasonic automatic cleaning, characterized in that: The ceramic membrane filter comprises: a housing unit (11), a tubular ceramic membrane (12) arranged inside the housing unit (11), at least two partition plates are arranged inside the housing unit (11), and the partition plates divide the internal space of the housing unit (11) into at least three spaces, including a liquid inlet cavity, a liquid outlet cavity, and a filter cavity arranged between the liquid inlet cavity and the liquid outlet cavity; the two ends of the tubular ceramic membrane (12) are respectively arranged in the liquid inlet cavity and the liquid outlet cavity, and pass through the filter cavity; the liquid inlet cavity, the liquid outlet cavity, and the filter cavity are respectively provided with a liquid inlet (13), a liquid outlet (14), and a filter port (15); the liquid to be filtered is input into the liquid inlet cavity through the liquid inlet (13) and then enters the tubular ceramic membrane (12), the liquid that passes through the filtration in the tubular ceramic membrane (12) permeates outside the tubular ceramic membrane (12) and is output through the filter port (15), and the liquid that does not pass through the filtration flows into the liquid outlet cavity and flows out through the liquid outlet (14); A vibration unit (16) and a connecting assembly for connecting the vibration unit (16) to the housing unit (11) are provided in the filter chamber. The connecting assembly is used to limit the position of the vibration unit (16). The vibration unit (16) is used to generate vibration energy. The vibration energy is transmitted to the tubular ceramic membrane (12) through the liquid in the filter chamber, thereby achieving the effect of cleaning the tubular ceramic membrane (12). A plurality of tubular ceramic membranes (12) are arranged inside the housing unit (11), and the two ends of the plurality of tubular ceramic membranes (12) are respectively arranged in the liquid inlet cavity and the liquid outlet cavity. The plurality of tubular ceramic membranes (12) pass through the filter cavity and are parallel to each other in the filter cavity. The vibration unit (16) is arranged in the gap between the tubular ceramic membrane (12) and the adjacent tubular ceramic membrane (12). The vibration generated by the vibration unit (16) can clean the surface of the tubular ceramic membrane (12) nearby. The vibration unit (16) is made of magnetostrictive material. An electromagnetic coil (17) is provided outside the housing unit (11). The electromagnetic coil (17) can be connected to a power source and generates a magnetic field when energized, thereby driving the vibration unit (16) to generate vibration.

2. The ultrasonic automatic cleaning ceramic membrane filter according to claim 1, characterized in that: The connecting assembly comprises an axial connecting piece (31), the length direction of the axial connecting piece (31) being parallel to the length direction of the tubular ceramic membrane (12); both ends of the axial connecting piece (31) are respectively connected to the partition plates on both sides of the filter cavity; The axial connecting member (31) is made of a flexible material, and the vibration unit (16) is sleeved on the axial connecting member (31).

3. The ultrasonic automatic cleaning ceramic membrane filter according to claim 2, characterized in that: A plurality of vibration units (16) are provided on the axial connecting member (31) along the length direction. The vibration units (16) are annular and sleeved on the outside of the axial connecting member (31). The axial connecting member (31) is also provided with an annular sleeve (32). The annular sleeve (32) is provided between two adjacent vibration units (16). The annular sleeve (32) is made of a flexible material. The annular sleeve (32) is used to keep a distance between the vibration units (16) and adjacent vibration units (16) to avoid mutual collision during vibration, thereby causing noise and energy loss.

4. The ultrasonic automatic cleaning ceramic membrane filter according to claim 2, characterized in that: A plurality of axial connecting members (31) are provided inside the filter cavity, and the plurality of axial connecting members (31) are distributed in an annular shape; the connecting assembly further comprises an annular connecting member (41); The annular connector (41) includes a supporting portion in the shape of a circular ring, and also includes a plurality of buckles (42) arranged at intervals on the supporting portion, the buckles (42) being used to connect with the axial connector (31), and the annular connector (41) being used to maintain the positions of the plurality of axial connectors (31) in the longitudinal direction of the filter cavity, preventing the axial connectors (31) from contacting other axial connectors (31), and avoiding the vibration units (16) on the plurality of axial connectors (31) from colliding with each other during vibration, thereby preventing noise and energy loss.

5. The ultrasonic automatic cleaning ceramic membrane filter according to claim 4, characterized in that: A plurality of annular connectors (41) are provided inside the filter cavity. The plurality of annular connectors (41) are spaced apart in the length direction of the axial connector (31). The plurality of annular connectors (41) are used to keep the axial connector (31) in position in the length direction to prevent the vibration unit (16) from contacting the inner wall of the filter cavity or the tubular ceramic membrane (12).

6. The ultrasonic automatic cleaning ceramic membrane filter according to claim 4, characterized in that: The plurality of axial connecting members (31) form two rings, the two rings being an inner ring and an outer ring, the inner ring and the outer ring being concentric; the annular connecting member (41) is used to connect the inner ring; The connecting assembly further includes a radial connecting member (43), which is arranged along the radial direction of the filter cavity. The radial connecting member (43) is used to connect the axial connecting member (31) of the inner ring and the axial connecting member (31) of the outer ring. The radial connecting member (43) is used to keep the vibration units (16) of the inner ring and the outer ring apart to prevent the vibration units (16) of the inner ring and the outer ring from colliding with each other.

7. The ultrasonic automatic cleaning ceramic membrane filter according to claim 6, characterized in that: A plurality of radial connecting pieces (43) are provided inside the filter cavity, and a plurality of radial connecting pieces (43) are provided at intervals in the circumferential direction of the annular connecting piece (41).

8. The ultrasonic automatic cleaning ceramic membrane filter according to claim 1, characterized in that: The shell unit (11) is provided with a plurality of sections in the longitudinal direction, and each section is provided with an independent electromagnetic coil (17). The shell unit (11) is provided with a plurality of electromagnetic coils (17) in the longitudinal direction, and each electromagnetic coil (17) corresponds to a vibration unit (16) inside each section. Independently controlling each electromagnetic coil (17) can control the operation of the vibration unit (16) in each section.

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