Ultrasonic automatic cleaning ceramic membrane filter

Abstract

The invention provides an ultrasonic automatic cleaning ceramic membrane filter, and belongs to the technical field of filtration and separation, the ultrasonic automatic cleaning ceramic membrane filter comprises a shell unit and a tubular ceramic membrane arranged in the shell unit, the shell unit is internally provided with at least two partition plates, the partition plates divide the internal space of the shell unit into at least three spaces, and the tubular ceramic membrane is arranged in the shell unit. The connecting assembly is used for limiting the position of the vibration unit, the vibration unit is used for generating vibration energy, and the vibration energy is transmitted to the tubular ceramic membrane through liquid in the filtering cavity, so that the effect of cleaning the tubular ceramic membrane is achieved; according to the ceramic membrane filter with the ultrasonic automatic cleaning function, a variable magnetic field is generated through the electromagnetic coil outside the shell unit, the vibration unit in the filter cavity can generate telescopic deformation according to the magnetic field, the telescopic deformation generates vibration waves, and the vibration waves transmit energy to the surface of the tubular ceramic membrane through a clean water medium in the filter cavity; and therefore, the effect of cleaning blockages is achieved.

Description

Technical Field

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

[0002] Ceramic membrane filtration technology is mainly used to solve the problem of aquaculture manure water pollution and achieve resource recycling. Through physical screening, it can efficiently remove more than 99% of the suspended solids, pathogens and organic pollutants in the manure water to ensure up-to-standard discharge. At the same time, clean water and nutrient-rich concentrate are recovered, significantly reducing the consumption of fresh water and extracting raw materials for organic fertilizers.

[0003] The manure water is first pretreated, such as solid-liquid separation and pH adjustment, and then enters the ceramic membrane system for cross-flow filtration at a pressure of 0.1 - 0.5 MPa: the microfiltration / ultrafiltration membrane separates clean water and concentrate. The clean water is used for irrigation, and the concentrate is used for making fertilizers or producing biogas.

[0004] In the prior art, the system maintains the stability of the membrane flux by regular automatic backwashing to prevent the ceramic membrane from being blocked. However, during backwashing, the attachments tightly attached to the surface of the ceramic membrane cannot be cleaned, resulting in low filtration efficiency. Summary of the Invention

[0005] Based on this, the object of the present invention is to provide a ceramic membrane filter with ultrasonic automatic cleaning. The ceramic membrane filter includes: a housing unit, and a tubular ceramic membrane disposed inside the housing unit. At least two partition plates are provided inside the housing unit, and the partition plates divide the internal space of the housing unit into at least three spaces, including a liquid inlet chamber, a liquid outlet chamber, and a filtration chamber disposed between the liquid inlet chamber and the liquid outlet chamber; both ends of the tubular ceramic membrane are respectively disposed in the liquid inlet chamber and the liquid outlet chamber, and pass through the filtration chamber; a liquid inlet, a liquid outlet, and a filtration port are respectively provided on the liquid inlet chamber, the liquid outlet chamber, and the filtration chamber; the liquid to be filtered is input into the liquid inlet chamber through the liquid inlet and then enters the tubular ceramic membrane. The liquid that passes through the filtration in the tubular ceramic membrane penetrates outside the tubular ceramic membrane and is output through the filtration port, and the liquid that does not pass through the filtration flows into the liquid outlet chamber and flows out through the liquid outlet. A vibration unit and a connection component for connecting the vibration unit to the housing unit are provided in the filtration chamber. The connection component is used to limit the position of the vibration unit, and the vibration unit is used to generate vibration energy. The vibration energy is transmitted to the tubular ceramic membrane through the liquid in the filtration chamber to clean the tubular ceramic membrane.

[0006] Preferably, the vibration unit is made of magnetostrictive material, and an electromagnetic coil is provided outside the housing unit. The electromagnetic coil can be connected to a power supply, and after being energized, it generates a magnetic field to drive the vibration unit to generate vibration.

[0007] Preferably, a plurality of tubular ceramic membranes are arranged inside the housing unit. Both ends of the plurality of tubular ceramic membranes are respectively arranged in the liquid inlet chamber and the liquid outlet chamber. The plurality of tubular ceramic membranes pass through the filtration chamber and are parallel to each other in the filtration chamber. The vibration unit is arranged in the gap between adjacent tubular ceramic membranes, and the vibration generated by the vibration unit can clean the surfaces of the tubular ceramic membranes near it.

[0008] Preferably, the connection assembly includes an axial connector. The length direction of the axial connector is parallel to the length direction of the tubular ceramic membrane. Both ends of the axial connector are respectively connected to the partition plates on both sides of the filtration chamber. The axial connector is made of a flexible material, and the vibration unit is sleeved on the axial connector.

[0009] Preferably, a plurality of vibration units are arranged along the length direction on one axial connector. The vibration units are circular rings and are sleeved on the outer side of the axial connector. An annular sleeve is also arranged on the axial connector. The annular sleeve is arranged between two adjacent vibration units. The annular sleeve is made of a flexible material and is used to keep a distance between the vibration units and adjacent vibration units to avoid noise and energy loss caused by mutual collision during vibration.

[0010] Preferably, a plurality of axial connectors are arranged inside the filtration chamber, and the plurality of axial connectors are annularly distributed. The connection assembly further includes an annular connector. The annular connector includes a circular ring-shaped support portion and a plurality of buckles spaced on the support portion. The buckles are used to connect with the axial connectors. The annular connector is used to maintain the positions of the plurality of axial connectors in the length direction of the filtration chamber, prevent the axial connectors from contacting other axial connectors, and avoid noise and energy loss caused by mutual collision of the vibration units on the plurality of axial connectors during vibration.

[0011] Preferably, a plurality of annular connectors are arranged inside the filtration cavity. The plurality of annular connectors are spaced 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 and avoid the vibration unit from contacting the inner wall of the filtration cavity or the tubular ceramic membrane.

[0012] Preferably, the plurality of axial connectors form two rings, namely an inner ring and an outer ring, and the inner ring and the outer ring are concentric. The annular connector is used to connect the inner ring. The connection assembly further includes a radial connector. The radial connector is arranged along the radial direction of the filtration chamber. The radial connector is used to connect the axial connectors of the inner ring and the outer ring, and the radial connector is used to keep the vibration units of the inner ring and the outer ring at a distance from each other to prevent the vibration units of the inner ring and the outer ring from colliding with each other.

[0013] Preferably, a plurality of radial connectors are arranged inside the filtering cavity, and a plurality of radial connectors are arranged at intervals in the circumferential direction of the annular connector.

[0014] Preferably, a plurality of sections are arranged in the length direction of the housing unit, and each section is provided with an independent electromagnetic coil. A plurality of electromagnetic coils are arranged in the length direction of the housing unit, and each electromagnetic coil corresponds to a vibration unit inside each section. By independently controlling each electromagnetic coil, the vibration units in each section can be controlled to work respectively.

[0015] Beneficial effects: According to the embodiments of the present invention, an ultrasonic automatic cleaning ceramic membrane filter generates a changing magnetic field through the electromagnetic coil outside the housing unit. The vibration unit inside the filtering cavity can generate telescopic deformation according to the magnetic field, and the telescopic deformation generates vibration waves. The vibration waves transfer energy to the surface of the tubular ceramic membrane through the clear water medium in the filtering cavity, thereby playing a role in cleaning the blockage. Description of the Drawings

[0016] This disclosure includes the accompanying drawings of the specification, which should be regarded as being included in the specification and constituting a part of the specification, and together with the specification, show various exemplary embodiments, features and aspects of the present disclosure, and are used to explain the principles of the present disclosure. The present invention will be more fully understood through the following detailed description in conjunction with the drawings. Among them: Figure 1 is a schematic diagram of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 2 is an internal structure schematic diagram of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 3 is Figure 2 a partial enlarged view of part A in Figure 4 is a schematic diagram of the filtering cavity of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 5 is a schematic diagram of the liquid inlet cavity of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 6 is an internal structure schematic diagram of the outer shell unit of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 7 is Figure 6 a partial enlarged view of part B in Figure 8 is Figure 6 a partial enlarged view of part C in Figure 9 is a schematic diagram of the annular connector and the radial connector of an ultrasonic automatic cleaning ceramic membrane filter according to an embodiment of the present invention; Figure 10 Schematic diagram of an end cover assembly of a ceramic membrane filter for ultrasonic automatic cleaning according to an embodiment of the present invention; Figure 11 Schematic diagram of an axial connecting member of a ceramic membrane filter for ultrasonic automatic cleaning according to an embodiment of the present invention; Figure 12 is Figure 11 partial enlarged view at position D in Wherein: housing unit 11, tubular ceramic membrane 12, liquid inlet 13, liquid outlet 14, filtration port 15, vibration unit 16, electromagnetic coil 17, protective housing 18, inner layer plate 21, outer layer plate 22, small sealing ring 23, large sealing ring 24, axial connecting member 31, annular sleeve 32, knot 33, rod 34, annular connecting member 41, buckle 42, radial connecting member 43. Specific embodiments

[0017] The technical solutions of the present invention will be further described in detail below through embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0018] Ceramic membrane filtration technology is mainly used to solve the problem of aquaculture manure water pollution and achieve resource recycling. Through physical screening, more than 99% of the suspended solids, pathogens and organic pollutants in the manure water can be efficiently removed to ensure up-to-standard discharge. At the same time, clean water and nutrient-rich concentrated liquid are recovered, significantly reducing the consumption of fresh water and extracting raw materials for organic fertilizers.

[0019] The manure water is first pretreated, such as solid-liquid separation and pH adjustment, and then enters the ceramic membrane system for cross-flow filtration at a pressure of 0.1 - 0.5 MPa: the microfiltration / ultrafiltration membrane separates clean water and concentrated liquid. The clean water is used for irrigation, and the concentrated liquid is used for manufacturing fertilizers or producing biogas.

[0020] In the prior art, the system maintains the stability of the membrane flux by regular automatic backwashing to prevent the ceramic membrane from being blocked. In this way, during backwashing, the attachments closely attached to the surface of the ceramic membrane cannot be cleaned, resulting in low filtration efficiency.

[0021] To solve the above problems, the purpose of the present invention is to provide an ultrasonic automatic cleaning ceramic membrane filter, which includes: a housing unit 11 and a tubular ceramic membrane 12 disposed inside the housing unit 11. At least two partition plates are provided 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 chamber, a liquid outlet chamber, and a filtration chamber disposed between the liquid inlet chamber and the liquid outlet chamber; both ends of the tubular ceramic membrane 12 are respectively disposed in the liquid inlet chamber and the liquid outlet chamber and pass through the filtration chamber; a liquid inlet 13, a liquid outlet 14, and a filtration port 15 are respectively provided on the liquid inlet chamber, the liquid outlet chamber, and the filtration chamber; 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 that passes through the filtration in the tubular ceramic membrane 12 penetrates outside the tubular ceramic membrane 12 and is output through the filtration port 15, and the liquid that does not pass through the filtration flows into the liquid outlet chamber and flows out through the liquid outlet 14. A vibration unit 16 and a connection assembly for connecting the vibration unit 16 to the housing unit 11 are provided in the filtration chamber. The connection assembly is used to limit the position of the vibration unit 16, and 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 filtration chamber, achieving the effect of cleaning the tubular ceramic membrane 12.

[0022] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 6 shown, the housing unit 11 is cylindrical and hollow inside, and the tubular ceramic membrane 12 is a precision separation membrane made of inorganic ceramic materials and having a tubular structure. It has excellent chemical stability, thermal stability, mechanical strength, long service life, and excellent separation performance, and plays an important role in many industrial fields with demanding separation conditions or high requirements for membrane performance, especially suitable for treating high-temperature, strong acid and strong alkali, organic solvent-containing or complex fluid systems that require strong cleaning.

[0023] The fluid to be treated enters from the liquid inlet chamber under the drive of pressure and flows inside the tube. Small molecule substances or particles smaller than the membrane pore size in the fluid can penetrate through the micropores on the membrane wall, penetrate outside the tubular ceramic membrane 12 and are output from the filtration port 15, becoming the permeate. Particles, colloids, macromolecular substances, bacteria, and even some soluble substances larger than the membrane pore size are retained inside the membrane tube, enter the liquid outlet chamber and are output from the liquid outlet 14, becoming the concentrate.

[0024] As the filtration continues, a large amount of substances adhere to the tubular ceramic membrane 12. Usually, in order to clean the substances adhering to the tubular ceramic membrane 12, the filtration port 15 is connected to a water source with pressure to wash the substances adhering to the tubular ceramic membrane 12, and this process is backwashing.

[0025] In some embodiments, two filter ports 15 are respectively arranged on both sides of the filter chamber. During backwashing, one filter port 15 serves as the input port, and the other filter port 15 serves as the output port for backwashing.

[0026] The vibration unit 16 is a component capable of generating vibration, which is arranged inside the filter chamber and outside the tubular ceramic membrane 12. During backwashing, the filter chamber is filled with liquid, and the vibration energy generated by the vibration unit 16 can be transmitted through the liquid as a medium. The vibration energy acts on the tubular ceramic membrane 12, separating the substances attached to the tubular ceramic membrane 12 from the tubular ceramic membrane 12 and discharging them together with the backwashing liquid to the outside of the housing unit 11.

[0027] Furthermore, the vibration unit 16 is made of magnetostrictive material, and an electromagnetic coil 17 is arranged outside the housing unit 11. The electromagnetic coil 17 can be connected to a power supply, and after being energized, it generates a magnetic field to drive the vibration unit 16 to generate vibration.

[0028] Magnetostrictive materials are a class of intelligent materials that can convert magnetic energy and mechanical energy into each other. When an external magnetic field is applied, the shape or size of the material will undergo reversible elongation or shortening.

[0029] In the specific implementation process, the magnetostrictive material can be a rare earth-iron-based alloy. After the electromagnetic coil 17 is connected to an alternating current, it can generate a changing magnetic field, and the magnetostrictive material generates deformation with the change of the magnetic field, thereby generating vibration waves.

[0030] Preferably, as Figure 6 、 Figure 7 shown, a protective shell 18 is further arranged on the outer side of the housing unit, and the protective shell 18 is used to protect the electromagnetic coil 17.

[0031] Furthermore, a plurality of tubular ceramic membranes 12 are arranged inside the housing unit 11. Both ends of the plurality of tubular ceramic membranes 12 are respectively arranged in the liquid inlet chamber and the liquid outlet chamber. The plurality of tubular ceramic membranes 12 pass through the filter chamber and are parallel to each other in the filter chamber; the vibration unit 16 is arranged in the gap between adjacent tubular ceramic membranes 12, and the vibration generated by the vibration unit 16 can clean the surfaces of the adjacent tubular ceramic membranes 12.

[0032] In this embodiment, as Figure 5 shown, the plurality of tubular ceramic membranes 12 can improve the filtration efficiency. In the housing unit 11 of this embodiment, 7 tubular ceramic membranes 12 are arranged, one is arranged at the central position, and the other 6 are arranged in a circular pattern.

[0033] In the specific implementation process, as Figure 10As shown, the partition plate includes two layers of plates, namely an inner layer plate 21 close to the filtration chamber and an outer layer plate 22 close to the liquid inlet chamber or the liquid outlet chamber. Through holes matching the shape and position of the tubular ceramic membrane 12 are provided on both the inner layer plate 21 and the outer layer plate 22, and the end of the tubular ceramic membrane 12 passes through the inner layer plate 21 and the outer layer plate 22 through the through holes. An annular sealing ring is arranged between the inner layer plate 21 and the outer layer 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 arranged between the inner layer plate 21 and the outer layer plate 22, and fastener holes are also opened on the inner layer plate 21 and the outer layer plate 22. The fasteners are bolts and nuts matching therewith. By means of the fasteners, the inner layer plate 21 and the outer layer plate 22 can be clamped and the sealing rings can be extruded simultaneously, so as to increase the airtightness effect. Ensure that the fluid enters the tubular ceramic membrane 12 from the end of the tubular ceramic membrane 12.

[0034] Furthermore, the connection assembly includes an axial connecting piece 31, and the length direction of the axial connecting piece 31 is 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 filtration chamber; The axial connecting piece 31 is made of a flexible material, and the vibration unit 16 is sleeved on the axial connecting piece 31.

[0035] In this embodiment, as Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 11 、 Figure 12 shown, the axial connecting piece 31 can be a flexible rope body, specifically a rubber rope or a textile rope. The vibration unit 16 is configured to be circular, and the vibration unit 16 is sleeved on the axial connecting piece 31.

[0036] Preferably, one end of the two ends of the axial connecting piece 31 passes through a partition plate, and the other end is threadedly connected to the other partition plate. Specifically, a rope hole is provided on the inner layer plate 21 of a partition plate. After the axial connecting piece 31 passes through the rope hole, a rope knot 33 is tied for fixation. A threaded hole is provided on the inner layer plate 21 of the other partition plate. A rod 34 with an external thread is provided at the end of the axial connecting piece 31. Rotating the rod 34 can adjust the relative position of the rod 34 and the partition plate, thereby tensioning the axial connecting piece 31.

[0037] Further, a plurality of vibration units 16 are arranged along the length direction on the axial connector 31. The vibration units 16 are circular rings and are sleeved on the outer side of the axial connector 31. An annular sleeve 32 is also arranged on the axial connector 31. The annular sleeve 32 is arranged between two adjacent vibration units 16. The annular sleeve 32 is made of a flexible material and is used to keep a distance between the vibration units 16 and adjacent vibration units 16 to avoid noise and energy loss caused by mutual collision during vibration.

[0038] In this embodiment, as Figure 3 , Figure 6 , Figure 8 shown, a plurality of vibration units 16 are arranged on an axial connector 31. The vibration units 16 are circular rings and are sleeved on the outer side of the axial connector 31. An annular sleeve 32 is arranged between the vibration unit 16 and adjacent vibration units 16. The annular sleeve 32 is also a circular ring and 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 noise and energy loss caused by mutual collision during vibration.

[0039] Preferably, chamfered edges are provided at both ends of the vibration unit 16. The chamfered edges can make the direction of the vibration wave in the front diagonal direction, and the vibration waves generated when two adjacent vibration units 16 work simultaneously can be superimposed to increase energy.

[0040] Preferably, a plurality of knots 33 are arranged at intervals on the axial connector 31. A plurality of vibration units 16 are arranged between each knot 33. The knots 33 divide the vibration units 16 into regions. In the specific implementation process, the positions of some vibration units 16 can be restricted near the regions where the tubular ceramic membrane 12 is prone to accumulation through the knots 33.

[0041] Further, a plurality of axial connectors 31 are arranged inside the filtration chamber, and the plurality of axial connectors 31 are annularly distributed; the connection assembly further includes an annular connector 41; The annular connector 41 includes a circular support portion and a plurality of buckles 42 arranged at intervals on the support portion. The buckles 42 are used to connect with the axial connectors 31. The annular connector 41 is used to maintain the positions of the plurality of axial connectors 31 in the length direction of the filtration chamber, prevent the axial connectors 31 from contacting other axial connectors 31, and avoid noise and energy loss caused by mutual collision of the vibration units 16 on the plurality of axial connectors 31 during vibration.

[0042] In this embodiment, the plurality of axial connectors 31 are all parallel to each other and are arranged between the partition plates on both sides of the filtration chamber. As Figure 9As shown, the annular connecting member 41 is a circular support portion made of an elastic material, which can be a metal material or a plastic material. The buckle 42 can be sleeved on the axial connecting member 31 or on the annular sleeve 32 on the axial connecting member 31. The annular connecting member 41 can play a supporting role in the length direction of the axial connecting member 31, maintain the distance between multiple axial connecting members 31, prevent the axial connecting member 31 from contacting other axial connecting members 31, and avoid the vibration units 16 from colliding with each other and causing energy loss.

[0043] Furthermore, a plurality of annular connecting members 41 are arranged inside the filtering cavity. The plurality of annular connecting members 41 are spaced apart in the length direction of the axial connecting member 31. The plurality of annular connecting members 41 are used to keep the axial connecting member 31 in position in the length direction and avoid the vibration unit 16 from contacting the inner wall of the filtering cavity or the tubular ceramic membrane 12.

[0044] In the specific implementation process, a plurality of annular connecting members 41 are arranged inside the filtering cavity. For the axial connecting member 31 with a longer length, arranging a plurality of annular connecting members 41 in the length direction of the axial connecting member 31 can keep the axial connecting member 31 in position in the length direction and avoid the vibration unit 16 from colliding with other vibration units 16 or with the inner wall of the filtering cavity.

[0045] Furthermore, the plurality of axial connecting members 31 form two rings, namely an inner ring and an outer ring, and the inner ring and the outer ring are concentric; the annular connecting member 41 is used to connect the inner ring; The connecting assembly further includes a radial connecting member 43. The radial connecting member 43 is arranged along the radial direction of the filtering cavity. The radial connecting member 43 is used to connect the axial connecting members 31 of the inner ring and the axial connecting members 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 and prevent the vibration units 16 of the inner ring and the outer ring from colliding with each other.

[0046] In some embodiments, the annular connecting member 41 can be a single ring connecting the axial connecting members 31 of the inner ring. In some embodiments, the connecting member can be two concentric rings, one ring connecting the axial connecting members 31 of the inner ring and the other ring connecting the axial connecting members 31 of the outer ring. The two rings are connected by a radial connecting member 43.

[0047] The radial connecting member 43 is arranged along the diameter direction of the filtering cavity and can be made of an elastic material. In some embodiments, the radial connecting member 43 can also be provided with a plurality of bent shapes for shock absorption.

[0048] Furthermore, a plurality of radial connecting members 43 are arranged inside the filtering cavity, and a plurality of radial connecting members 43 are spaced apart in the circumferential direction of the annular connecting member 41.

[0049] In this embodiment, a plurality of radial connectors 43 are arranged in a divergent manner, and a plurality of radial connectors 43 are arranged at intervals in the circumferential direction of the annular connector 41. This serves to evenly connect the two concentric annular connectors 41.

[0050] Furthermore, a plurality of sections are provided in the length direction of the housing unit 11, and each section is provided with an independent electromagnetic coil 17. A plurality of electromagnetic coils 17 are provided in the length direction of the housing unit 11, and each electromagnetic coil 17 corresponds to a vibration unit 16 inside each section. Independently controlling each electromagnetic coil 17 can respectively control the operation of the vibration units 16 in each section.

[0051] In this embodiment, a plurality of sections are provided in the length direction of the housing unit 11, and the electromagnetic coils 17 of each section can be independently controlled. In the specific implementation process, the energy can be concentrated on the electromagnetic coil 17 of a certain section to increase the vibration energy and remove stubborn attachments.

[0052] In some embodiments, the annular connector 41 can be arranged between two sections, and no electromagnetic coil 17 is provided between the two sections, so as to avoid generating eddy currents on the annular connector 41 when the electromagnetic coil 17 operates, and thus generating unnecessary heat.

[0053] The above has described the various embodiments of the present invention disclosed. 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 of ordinary skill in the art of the present technology without departing from the spirit and scope of the present invention. That is to say, those of ordinary skill in the art can make various changes and improvements to the present invention in form and details, and all of these are considered to fall within the protection scope of the present invention. The selection of the terms used herein is intended to best explain the principles of the various embodiments, practical applications, or improvements to the technologies in the market, or to enable those of ordinary skill in the art of the present technology to understand the various embodiments disclosed herein.

Claims

1. An ultrasonic automatic cleaning ceramic membrane filter, characterized in that The ceramic membrane filter includes: a housing unit (11) and a tubular ceramic membrane (12) disposed inside the housing unit (11). At least two partition plates are provided 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 chamber, a liquid outlet chamber, and a filtration chamber disposed between the liquid inlet chamber and the liquid outlet chamber; both ends of the tubular ceramic membrane (12) are respectively disposed in the liquid inlet chamber and the liquid outlet chamber and pass through the filtration chamber; a liquid inlet (13), a liquid outlet (14), and a filtration port (15) are respectively provided on the liquid inlet chamber, the liquid outlet chamber, and the filtration chamber; 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 passing through the filtration in the tubular ceramic membrane (12) penetrates outside the tubular ceramic membrane (12) and is output through the filtration port (15), and the liquid that does not pass through the filtration flows into the liquid outlet chamber and flows out through the liquid outlet (14). A vibration unit (16) and a connection assembly for connecting the vibration unit (16) to the housing unit (11) are provided in the filtration chamber. The connection assembly is used to limit the position of the vibration unit (16), and 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 filtration chamber, achieving the effect of cleaning the tubular ceramic membrane (12).

2. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 1, characterized in that: 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 supply, and after being energized, it generates a magnetic field to drive the vibration unit (16) to generate vibration.

3. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 1 or 2, characterized in that: A plurality of tubular ceramic membranes (12) are provided inside the housing unit (11). Both ends of the plurality of tubular ceramic membranes (12) are respectively disposed in the liquid inlet chamber and the liquid outlet chamber. The plurality of tubular ceramic membranes (12) pass through the filtration chamber and are parallel to each other in the filtration chamber; the vibration unit (16) is disposed 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.

4. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 3, characterized in that: The connection assembly includes an axial connection member (31), and 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 filtration chamber. The axial connection member (31) is made of a flexible material, and the vibration unit (16) is sleeved on the axial connection member (31).

5. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 4, wherein: A plurality of vibration units (16) are provided along the length direction on one axial connection member (31). The vibration units (16) are circular rings and are sleeved on the outer side of the axial connection member (31); an annular sleeve (32) is further provided on the axial connection member (31). The annular sleeve (32) is disposed between two adjacent vibration units (16). The annular sleeve (32) is made of a flexible material, and the annular sleeve (32) is used to keep a distance between the vibration unit (16) and the adjacent vibration unit (16) to avoid noise and energy loss caused by mutual collision during vibration.

6. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 4, characterized in that: A plurality of axial connectors (31) are arranged inside the filtering chamber, and the plurality of axial connectors (31) are distributed in a ring shape; the connecting assembly further includes an annular connector (41); The annular connector (41) includes a circular support portion, and further includes a plurality of buckles (42) spaced apart on the support portion. The buckles (42) are used to connect with the axial connectors (31). The annular connector (41) is used to maintain the positions of the plurality of axial connectors (31) in the length direction of the filtering chamber, prevent the axial connectors (31) from contacting other axial connectors (31), and avoid the vibration units (16) on the plurality of axial connectors (31) colliding with each other during vibration, resulting in noise and energy loss.

7. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 6, characterized in that: A plurality of annular connectors (41) are arranged inside the filtering cavity body, and the plurality of annular connectors (41) are spaced apart in the length direction of the axial connectors (31). The plurality of annular connectors (41) are used to keep the axial connectors (31) in position in the length direction and avoid the vibration units (16) from contacting the inner wall of the filtering cavity body or the tubular ceramic membrane (12).

8. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 6, wherein: The plurality of axial connectors (31) form two rings, namely an inner ring and an outer ring. The inner ring and the outer ring are concentric; the annular connector (41) is used to connect the inner ring; The connecting assembly further includes a radial connector (43). The radial connector (43) is arranged along the radial direction of the filtering chamber. The radial connector (43) is used to connect the axial connectors (31) of the inner ring and the axial connectors (31) of the outer ring. The radial connector (43) is used to keep the vibration units (16) of the inner ring and the outer ring at a distance from each other and prevent the vibration units (16) of the inner ring and the outer ring from colliding with each other.

9. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 8, wherein: A plurality of radial connectors (43) are arranged inside the filtering cavity body, and a plurality of radial connectors (43) are spaced apart in the circumferential direction of the annular connector (41).

10. The ceramic membrane filter for ultrasonic automatic cleaning according to claim 2, wherein: A plurality of sections are arranged in the length direction of the housing unit (11), and each section is provided with an independent electromagnetic coil (17). A plurality of electromagnetic coils (17) are arranged in the length direction of the housing unit (11). Each electromagnetic coil (17) corresponds to the vibration unit (16) inside each section. Controlling each electromagnetic coil (17) independently can control the vibration units (16) in each section to work respectively.

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