Ceramic membrane filtration equipment for producing phosphoric acid

Abstract

The utility model relates to ceramic membrane filtration equipment technical field, the utility model provides a kind of ceramic membrane filtration equipment for producing phosphoric acid, it includes shell with internal space, liquid inlet, liquid outlet and blowdown port;Isolation plate is arranged in internal space, isolation plate has the installation hole of circumferential arrangement, liquid inlet and liquid outlet are located isolation plate side, blowdown port is located isolation plate other side;Ceramic membrane filter tube has several, one-to-one rotation is arranged in several installation holes, ceramic membrane filter tube both ends are located the both sides of isolation plate respectively, ceramic membrane filter tube is communicated with liquid inlet;Cleaning pipe rotation is arranged on shell, cleaning pipe one end is located shell outside, the part of cleaning pipe in internal space has several spray pipes, cleaning pipe can be communicated with external water source, to make spray pipe can spray water to ceramic membrane filter tube cleaning.Solved the technical problem that substance in ceramic membrane micropore is not easy to clean in prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of ceramic membrane filtration equipment, specifically to a ceramic membrane filtration equipment for producing phosphoric acid. Background Technology

[0002] Ceramic membranes, also known as inorganic ceramic membranes, are asymmetric membranes formed from inorganic ceramic materials through a special process. Ceramic membranes are divided into two types: tubular ceramic membranes and flat-sheet ceramic membranes. Tubular ceramic membranes have densely packed micropores in their tube walls. Under pressure, the feed liquid flows inside or outside the membrane tube. Small molecules permeate through the membrane, while large molecules are retained, thus achieving separation, concentration, purification, and environmental protection. In the production of phosphoric acid, ceramic membranes are commonly used to filter impurities in the mixed phosphoric acid.

[0003] In existing technologies, ceramic membrane filtration equipment typically lacks an automatic cleaning function. After a period of use, substances can become trapped on the surface of the ceramic membrane, leading to low subsequent filtration efficiency. Patent CN118904079B, a ceramic ultrafiltration membrane concentration device, proposes using a scraper to clean the surface of the ceramic ultrafiltration membrane, but this method cannot remove substances from the micropores of the ceramic membrane. Utility Model Content

[0004] To overcome the above-mentioned defects, embodiments of this utility model provide a ceramic membrane filtration device for producing phosphoric acid, which solves the technical problem that the substances in the micropores of ceramic membranes are not easy to clean in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a ceramic membrane filtration device for producing phosphoric acid, including... The shell has an internal space, a liquid inlet, a liquid outlet, and a drain outlet; An isolation plate is disposed within the internal space. The isolation plate has circumferentially arranged mounting holes. The liquid inlet and the liquid outlet are located on one side of the isolation plate, and the sewage outlet is located on the other side of the isolation plate. A number of ceramic membrane filter tubes are rotatably installed in a number of mounting holes, with both ends of the ceramic membrane filter tubes located on both sides of the isolation plate, and the ceramic membrane filter tubes are connected to the liquid inlet. A cleaning tube is rotatably mounted on the housing. The cleaning tube is located at the center of several ceramic membrane filter tubes. The rotation axis of the cleaning tube is parallel to the axis of the ceramic membrane filter tube. One end of the cleaning tube is located outside the housing. The portion of the cleaning tube located in the internal space has several spray nozzles. The cleaning tube can be connected to an external water source so that the spray nozzles can spray water onto the ceramic membrane filter tubes for cleaning.

[0006] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid further includes: The first gear is mounted on the cleaning tube; The second gear has several of them, and each of the second gears is arranged one-to-one on one of the ceramic membrane filter tubes. Each of the second gears meshes with the first gear to drive the first gear to rotate synchronously.

[0007] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid further includes: A support plate is disposed in the internal space. The support plate has a plurality of through holes, each of which corresponds to a mounting hole. The support plate is located between the liquid inlet and the liquid outlet. The through holes can be passed through by the ceramic membrane filter tube so that the support plate can support the ceramic membrane filter tube.

[0008] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid further includes: The liquid separator has one inlet and several outlets. The outlets are connected to several ceramic membrane filter tubes in a one-to-one correspondence. The inlet is connected to the liquid inlet so that the liquid entering through the liquid inlet can enter the several ceramic membrane filter tubes evenly.

[0009] For example, in a ceramic membrane filtration device for producing phosphoric acid provided in at least one embodiment of the present invention, the inner wall of the housing has a first protruding ring, which is used to support the isolation plate.

[0010] For example, in a ceramic membrane filtration device for producing phosphoric acid provided in at least one embodiment of the present invention, the inner wall of the housing also has a protrusion, the protrusion is located above the first convex ring, and the isolation plate has a notch corresponding to the protrusion, so that the isolation plate can pass through the protrusion and enter between the protrusion and the first convex ring.

[0011] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid is provided, wherein the outer wall of the ceramic membrane filter tube has a second convex ring, and further includes: A plurality of buffer pads are provided, one to one, in the mounting holes, and the buffer pads are able to abut against the bottom of the second convex ring.

[0012] For example, in a ceramic membrane filtration device for producing phosphoric acid provided in at least one embodiment of the present invention, the diameter of the through hole is larger than the diameter of the mounting hole so that the ceramic membrane filter tube can pass through, and a filling pad is provided between the ceramic membrane filter tube and the through hole.

[0013] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid further includes: The cover is detachably mounted on the housing; A rotation drive device is provided on the housing cover, and the rotation drive device is located on one side of the cleaning tube. The rotation drive device is used to drive the cleaning tube to rotate.

[0014] For example, in at least one embodiment of the present invention, a ceramic membrane filtration device for producing phosphoric acid further includes: A connecting pipe is provided on the shell cover. The connecting pipe is rotatably and sealingly connected to the cleaning pipe. The connecting pipe is used to communicate with an external power water source.

[0015] The beneficial effects of this utility model are as follows: In this invention, a cleaning tube with a spray nozzle is set in the center of the ceramic membrane filter tube. The cleaning tube and the ceramic membrane filter tube are rotatable, so that the water sprayed from the nozzle can impact the surface and micropores of the ceramic membrane filter tube from all directions, effectively cleaning the impurities therein. Compared with the prior art, the micropore cleaning effect of the ceramic membrane is significantly improved, the filtration efficiency can be increased by 30%-50%, and the service life of the ceramic membrane is extended. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 for Figure 2 Enlarged structural diagram at point B; In the diagram: 100, shell; 110, internal space; 120, liquid inlet; 130, liquid outlet; 140, drain outlet; 200, isolation plate; 210, mounting hole; 300, ceramic membrane filter tube; 400, cleaning tube; 510, first gear; 520, second gear; 600, support plate; 610, through hole; 700, dispensing tube; 150, first convex ring; 160, protrusion; 310, second convex ring; 220, buffer pad; 170, shell cover; 800, rotation drive device; 900, connecting pipe. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0019] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-4 The diagram illustrates a ceramic membrane filtration device for producing phosphoric acid according to one embodiment of the present invention. It includes a housing 100 with an internal space 110, an inlet 120, an outlet 130, and a drain 140; a partition plate 200; a ceramic membrane filter plate; and a cleaning pipe 400. The housing 100 is cylindrical or rectangular in shape. The inlet 120 is located on the upper side of one side of the housing 100 and is connected by a flange or quick-connect coupling for easy connection to a phosphoric acid mixture delivery pipeline. The outlet 130 is located on the lower side of the same side as the inlet 120 and is also connected by a flange or quick-connect coupling, used to discharge the phosphoric acid solution filtered by the ceramic membrane. The drain 140 is located at the bottom of the housing 100 and is controlled by a ball valve or butterfly valve to discharge liquid that has not passed through the ceramic filter membrane and impurities washed off during ceramic membrane cleaning.

[0025] The isolation plate 200 is circular and fits snugly against the inner wall of the housing 100. It is fixed to the housing 100 by welding or bolting. A sealing structure exists between the isolation plate 200 and the housing 100 to prevent liquid passing through the ceramic membrane filter tube 300 above the isolation plate 200 from flowing below it. The isolation plate 200 has several circumferentially arranged mounting holes 210. A rotating sealing structure is installed between the ceramic membrane filter tube 300 and the mounting holes 210, allowing the ceramic membrane filter tube 300 to rotate freely within it while maintaining a certain level of sealing. The rotating sealing structure can be made of rubber rings.

[0026] The ceramic membrane filter tube 300 has a hollow tubular structure with densely packed micropores on its wall. One end of the ceramic membrane filter tube 300 is connected to the inlet 120, allowing the phosphoric acid mixture to enter the ceramic membrane filter tube 300. Some liquid and small molecular particles can pass through the micropores on the outer wall of the ceramic membrane filter tube 300 and enter the space above the isolation plate 200 and be discharged from the outlet 130. Liquid that fails to pass through the ceramic membrane filter tube 300 enters the space below the isolation plate 200 and is discharged from the drain outlet 140.

[0027] The cleaning tube 400 is located at the center of several ceramic membrane filter tubes 300, and its axis of rotation is parallel to the axis of the ceramic membrane filter tubes 300. One end of the cleaning tube 400 extends to the outside of the housing 100 for easy connection to an external water source; the connection method can be a quick-connect coupling. Several spray nozzles are evenly distributed within the internal space 110 of the cleaning tube 400. The number of spray nozzles is determined by the number and distribution of the ceramic membrane filter tubes 300, generally between 5 and 20. The spray nozzles are perpendicularly connected to the cleaning tube 400, and are fixed by welding or threaded connections. The diameter of the spray nozzles is between 5 and 15 mm, and the length is between 20 and 50 mm. The outlets of the spray nozzles are set at different angles to ensure that the sprayed water can fully cover the surface and micropores of the ceramic membrane filter tubes 300, effectively cleaning impurities.

[0028] By setting a cleaning pipe 400 with a spray nozzle at the center of the ceramic membrane filter tube 300, and the cleaning pipe 400 and the ceramic membrane filter tube 300 being rotatable, the water sprayed from the spray nozzle can impact the surface and micropores of the ceramic membrane filter tube 300 from all directions, effectively cleaning the impurities therein. Compared with the existing technology, the micropore cleaning effect of the ceramic membrane is significantly improved, the filtration efficiency can be increased by 30%-50%, and the service life of the ceramic membrane is extended.

[0029] refer to Figure 2 In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a first gear 510 and several second gears 520. The first gear 510 is mounted on a cleaning pipe 400 and fixed to the cleaning pipe 400 by a key connection or an expansion sleeve connection. The second gears 520 are correspondingly arranged on the ceramic membrane filter pipe 300, and the diameter of the second gear 520 is smaller than the diameter of the first gear 510. The second gears 520 are fixed to the ceramic membrane filter pipe 300 by a similar key connection or expansion sleeve connection. Through the meshing transmission of the first gear 510 and the several second gears 520, the synchronous rotation of the ceramic membrane filter pipe 300 is achieved, allowing the cleaning water sprayed from the nozzle to more comprehensively and evenly cover the ceramic membrane filter pipe 300, greatly improving the cleaning effect of the ceramic membrane.

[0030] refer to Figure 2 and Figure 3In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a support plate 600. The support plate 600 is disposed in the internal space 110 of the device, between the inlet 120 and the outlet 130, and is mainly used to support the ceramic membrane filter tube 300 and prevent the ceramic membrane filter tube 300 from tilting. The first gear 510 and the second gear 520 can be located above the support plate 600, so that the support plate 600 provides certain support for the first gear 510 and the second gear 520. The support plate 600 is provided with a plurality of through holes 610, which correspond one-to-one with the mounting holes 210 on the isolation plate 200. The diameter of the through holes 610 is slightly larger than the outer diameter of the ceramic membrane filter tube 300, generally 3-6 mm larger, which can ensure that the ceramic membrane filter tube 300 can pass through smoothly, and also provide certain support and positioning functions for it. After the ceramic membrane filter tube 300 passes through the through hole 610, a filling pad can be added between the ceramic membrane filter tube 300 and the through hole 610 to ensure the stability of the ceramic membrane filter tube 300.

[0031] The support plate 600 can be fixed to the inner wall of the housing 100 by welding, bolting, or snap-fit ​​connection. Alternatively, the housing 100 can be arranged into two parts with different diameters, with the inner diameter of the upper part being larger than that of the lower part, and the support plate 600 fixed to the boss formed by the upper and lower parts.

[0032] refer to Figure 2 and Figure 3 In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a distribution pipe 700, which can uniformly distribute the influent to each ceramic membrane filter tube 300. The distribution pipe 700 has an inlet communicating with the inlet 120 and several outlets communicating with each ceramic membrane filter tube 300 in a one-to-one correspondence. The distribution pipe 700 is generally an annular pipe with the outlets facing downwards and the inlets facing the side of the distribution pipe 700.

[0033] Furthermore, a first protruding ring 150 can be provided on the inner wall of the housing 100. The first protruding ring 150 surrounds the inner wall of the housing 100 and has a ring structure. The first protruding ring 150 is connected to the housing 100 by welding or integral molding. The first protruding ring 150 can support the isolation plate 200 and ensure the stability and ease of installation of the isolation plate 200.

[0034] Furthermore, a protrusion 160 can be provided on the inner wall of the housing 100. The number of protrusions 160 can be one or more, and the protrusions 160 are located above the first protruding ring 150.

[0035] Furthermore, the isolation plate 200 has notches, the number and size of which correspond one-to-one with the protrusions 160. When the notches are aligned with the protrusions 160, the isolation plate 200 can enter between the protrusions 160 and the first protruding ring 150. Then, rotating the isolation plate 200 can fix the isolation plate 200 and prevent the isolation plate 200 from vibrating in the height direction.

[0036] The stability and ease of installation of the isolation plate 200 are further improved by the first protrusion 160 and the protrusion 160.

[0037] Furthermore, the outer wall of the ceramic membrane filter tube 300 has a second convex ring 310, as shown in the reference. Figure 2 and Figure 3 In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a buffer pad 220. The buffer pad 220 is made of a material with good elasticity, corrosion resistance, and wear resistance. Each buffer pad 220 is annular, with its inner diameter matching the outer diameter of the ceramic membrane filter tube 300 and its outer diameter matching the inner wall of the mounting hole 210. This ensures that the buffer pad 220 can be easily fitted into the mounting hole 210 without causing excessive shaking of the ceramic membrane filter tube 300. The thickness of the buffer pad 220 is between 5 and 10 mm. This thickness provides sufficient elastic cushioning without affecting the installation accuracy of the ceramic membrane filter tube 300 or causing sealing problems on both sides of the separator plate 200 due to excessive thickness.

[0038] The height of the buffer pad 220 can exceed the top surface of the separator plate 200, allowing the buffer pad 220 to support the ceramic membrane filter tube 300 via the second protruding ring 310. When replacing or installing the ceramic membrane filter tube 300, after passing through the through hole 610 from above, one end of the ceramic membrane filter tube 300 passes through the mounting hole 210 until the buffer pad 220 abuts against the bottom of the second protruding ring 310. This prevents damage to the ceramic membrane filter tube 300 due to excessive speed when it comes into contact with the separator plate 200.

[0039] Furthermore, the diameter of the through hole 610 is larger than the diameter of the mounting hole 210 to allow the ceramic membrane filter tube 300 to pass through. After the ceramic membrane filter tube 300 passes through the through hole 610, a filler pad can be filled between the through hole 610 and the ceramic membrane filter tube 300 to ensure the stability of the ceramic membrane filter tube 300.

[0040] refer to Figure 2 and Figure 4In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a housing cover 170 and a rotation drive device 800. The main function of the housing cover 170 is to seal the housing 100, protect the internal components, and prevent external impurities from entering the internal space 110 and affecting the phosphoric acid solution. The housing cover 170 is connected to the housing 100 by a flange to facilitate maintenance and repair of the internal components. The rotation drive device 800 is used to drive the cleaning tube 400 to rotate, thereby effectively cleaning the ceramic membrane filter tube 300. It mainly consists of a motor, a reducer, a coupling, and a support frame. The motor serves as the power source, providing the torque required for the rotation of the cleaning tube 400. The drive end of the rotation drive device 800 is parallel to but does not coincide with the rotation axis of the cleaning tube 400, thus avoiding interference between the rotation drive device 800 and the water inlet channel of the cleaning tube 400. The drive end of the rotation drive device 800 and the cleaning tube 400 can be connected by gear transmission, belt transmission, or chain transmission.

[0041] refer to Figure 2 and Figure 3 In some embodiments, a ceramic membrane filtration device for producing phosphoric acid further includes a connecting pipe 900. The connecting pipe 900 is a component that connects an external power water source to a cleaning pipe 400. The connecting pipe 900 is tubular in shape, and its connection to the housing cover 170 is achieved by welding or flange connection to ensure stability and facilitate connection between the connecting pipe 900 and the external power water source. The connecting pipe 900 is sleeved on the cleaning pipe 400, and the connecting pipe 900 and the cleaning pipe 400 are rotatably sealed together, which can be achieved using a rotary joint. The rotary joint consists of a housing 100, a spindle, and seals. The housing 100 is fixedly connected to the connecting pipe 900, and the spindle is connected to the cleaning pipe 400 to ensure that the spindle rotates synchronously when the cleaning pipe 400 rotates.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A ceramic membrane filtration apparatus for producing phosphoric acid, characterized by, include The housing (100) has an internal space (110), a liquid inlet (120), a liquid outlet (130), and a drain outlet (140). An isolation plate (200) is disposed in the internal space (110). The isolation plate (200) has circumferentially arranged mounting holes (210). The liquid inlet (120) and the liquid outlet (130) are located on one side of the isolation plate (200), and the sewage outlet (140) is located on the other side of the isolation plate (200). A number of ceramic membrane filter tubes (300) are rotatably disposed in a number of mounting holes (210) in a corresponding manner. The two ends of the ceramic membrane filter tubes (300) are respectively located on both sides of the isolation plate (200). The ceramic membrane filter tubes (300) are connected to the liquid inlet (120). A cleaning tube (400) is rotatably mounted on the housing (100). The cleaning tube (400) is located at the center of several ceramic membrane filter tubes (300). The rotation axis of the cleaning tube (400) is parallel to the axis of the ceramic membrane filter tube (300). One end of the cleaning tube (400) is located outside the housing (100). The portion of the cleaning tube (400) located in the internal space (110) has several spray nozzles. The cleaning tube (400) can be connected to an external water source so that the spray nozzles can spray water onto the ceramic membrane filter tubes (300) for cleaning.

2. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 1, wherein Also includes: The first gear (510) is disposed on the cleaning tube (400); The second gear (520) has a plurality of them, and the plurality of second gears (520) are arranged one-to-one on the plurality of ceramic membrane filter tubes (300). The plurality of second gears (520) mesh with the first gear (510) for transmission, so that the first gear (510) can drive the plurality of second gears (520) to rotate synchronously.

3. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 1, wherein Also includes: A support plate (600) is disposed in the internal space (110). The support plate (600) has a plurality of through holes (610), which correspond one-to-one with the mounting holes (210). The support plate (600) is located between the liquid inlet (120) and the liquid outlet (130). The through holes (610) can be passed through by the ceramic membrane filter tube (300) so that the support plate (600) can support the ceramic membrane filter tube (300).

4. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 1, wherein Also includes: The separator (700) has an inlet and several outlets. The outlets are connected to several ceramic membrane filter tubes (300) in a one-to-one correspondence. The inlet is connected to the liquid inlet (120) so that the liquid entering through the liquid inlet (120) can be evenly entered into several ceramic membrane filter tubes (300).

5. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 3, wherein The inner wall of the housing (100) has a first protruding ring (150) for supporting the isolation plate (200).

6. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 5, wherein The inner wall of the housing (100) also has a protrusion (160) located above the first convex ring (150). The partition plate (200) has a notch corresponding to the protrusion (160) so that the partition plate (200) can pass through the protrusion (160) and enter between the protrusion (160) and the first convex ring (150).

7. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 6, wherein The outer wall of the ceramic membrane filter tube (300) has a second convex ring (310), and also includes: A plurality of buffer pads (220) are provided in the mounting holes (210) in a corresponding manner, and the buffer pads (220) can abut against the bottom of the second convex ring (310).

8. The ceramic membrane filtration apparatus for producing phosphoric acid according to claim 6, wherein The diameter of the through hole (610) is larger than the diameter of the mounting hole (210) so that the ceramic membrane filter tube (300) can pass through, and a filling pad is provided between the ceramic membrane filter tube (300) and the through hole (610).

9. The ceramic membrane filter apparatus for producing phosphoric acid according to claim 1, wherein Also includes: A cover (170) is detachably mounted on the housing (100); A rotation drive device (800) is provided on the housing cover (170). The rotation drive device (800) is located on one side of the cleaning tube (400). The rotation drive device (800) is used to drive the cleaning tube (400) to rotate.

10. A ceramic membrane filtration device for producing phosphoric acid according to claim 9, characterized in that, Also includes: A connecting pipe (900) is provided on the housing cover (170). The connecting pipe (900) is rotatably and sealed to the cleaning pipe (400). The connecting pipe (900) is used to communicate with an external power water source.

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