High-flux silicon carbide ceramic membrane filtering device

Abstract

The invention discloses a high-flux silicon carbide ceramic membrane filtering device, and belongs to the technical field of filtering equipment, the high-flux silicon carbide ceramic membrane filtering device comprises a guide cylinder unit and a rotating membrane cylinder unit, a dead end filtering station and a cross flow filtering station are arranged in the guide cylinder unit, and the rotating membrane cylinder unit is rotatably mounted in the guide cylinder unit; the two groups of silicon carbide ceramic membrane cylinders are rotatably mounted in the rotating membrane cylinder unit, pollutants on the surface of a membrane layer are cleaned by circularly switching the working states of the ceramic membrane cylinders, and the two groups of silicon carbide ceramic membranes can be always kept in a rotating state in the filtering process, so that the pollutants are uniformly distributed on the membrane layer; the deep deposition of pollutants in a specific area during dead-end filtration is avoided, and meanwhile, the two groups of membrane bodies are circularly switched between a dead-end filtration station and a cross-flow filtration station, so that the formation of a filter cake layer is effectively reduced, and the device is ensured to be in a high-membrane flux state.

Description

Technical Field

[0001] The present invention belongs to the technical field of filtering equipment, and in particular relates to a high-throughput silicon carbide ceramic membrane filtering device. Background Art

[0002] Carbonized ceramic membrane filter refers to a membrane separation device whose core filter element is made of silicon carbide ceramic material. It is a high-performance filtration technology that is widely used in many fields due to its excellent physical and chemical properties.

[0003] Chinese patent CN113368698A discloses a silicon carbide ceramic membrane filtration device, including a workbench, a filter box, a first water pressure sensor, a second water pressure sensor and a silicon carbide ceramic membrane, and also includes impurity removal equipment and a reflux equipment. If the pressure applied to the first water pressure sensor is much greater than the pressure applied to the second water pressure sensor, the first water pressure sensor and the second water pressure sensor transmit signals to perform cross-flow filtration. The cross-flow filtration can remove impurities in the silicon carbide ceramic membrane, and then the wastewater will carry the impurities into the impurity removal equipment, and then the impurities are recovered by the impurity removal equipment. The remaining liquid returns to the filter box again through the reflux equipment to complete the cleaning of the silicon carbide ceramic membrane. After the silicon carbide ceramic membrane is cleaned, the entire device will continue to return to the dead-end filtration state, thereby accelerating the filtration efficiency.

[0004] During the actual operation of the above-mentioned equipment, pollutants on the membrane surface will be unevenly distributed during dead-end filtration, causing pollutants to be concentrated in specific areas of the silicon carbide ceramic membrane. The deposition depth of pollutants on the membrane surface varies, and areas with excessively deep deposition are difficult to remove pollutants during cross-flow filtration, resulting in the easy formation of a filter cake layer in this area, which rapidly reduces the membrane flux. Summary of the Invention

[0005] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a high-throughput silicon carbide ceramic membrane filtration device to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-throughput silicon carbide ceramic membrane filtration device includes a flow guide cylinder unit and a rotating membrane cylinder unit. The flow guide cylinder unit is provided with two sets of pipes for pumping fluid, and the two sets of pipes are respectively used for dead-end filtration and cross-flow filtration of the silicon carbide ceramic membrane. The rotating membrane cylinder unit is rotatably installed inside the flow guide cylinder unit, and two sets of silicon carbide ceramic membrane cylinders are provided in the rotating membrane cylinder unit. The two sets of silicon carbide ceramic membrane cylinders rotate in the flow guide cylinder unit, and the working state of the silicon carbide ceramic membrane cylinders is cyclically switched to clean the contaminants on the surface of the ceramic membrane. The guide tube unit includes a guide shell assembly, which includes a guide shell body, a front panel and a rear panel. The front panel and the rear panel are respectively provided at both ends of the guide shell body. The rotating membrane cylinder unit includes a membrane cylinder assembly, which includes a reversing cylinder, a columnar groove and a ceramic membrane cylinder. The reversing cylinder is rotatably arranged in the guide shell body, and a gap is set between one side end face of the reversing cylinder and the rear panel. Two groups of columnar grooves are circumferentially arranged on the reversing cylinder, and the two groups of ceramic membrane cylinders are respectively rotatably assembled in the two groups of columnar grooves.

[0007] As a further solution of the present invention, the diversion shell assembly also includes a diverter shell cavity and a drainage pipe. The two groups of diverter shell cavities are respectively arranged on the bottom and top sides of the diversion shell body, and the diverter shell cavities are respectively connected to two groups of drainage pipes. The diverter shell cavity on the bottom side of the diversion shell body cavity is set as a relative first groove cavity, and the diverter shell cavity on the top side of the diversion shell body cavity is set as a relative second groove cavity. The first groove cavity is used to recover the filtered liquid on the dead-end filtration side, and the second groove cavity is used to recover the filtered liquid on the cross-flow filtration side.

[0008] As a further solution of the present invention, the membrane cylinder assembly also includes an outer gear ring, a front sliding surface and a rear sliding surface. The ceramic membrane cylinder is also provided with an outer gear ring at one end close to the front panel. The outer gear ring is fixedly assembled on the outer diameter of the ceramic membrane cylinder. The front sliding surface and the rear sliding surface are respectively arranged at the two ends of the reversing cylinder. The front sliding surface is fitted with the front panel, and the rear sliding surface is fitted with the rear panel.

[0009] As a further solution of the present invention, the membrane cylinder assembly also includes a partition plate, a driving shaft, a driving gear, an internal tooth hole and a transmission gear. The partition plate is rotatably assembled in the guide shell body, the driving shaft is inserted on the front panel and the end of the driving shaft is coaxially fixedly assembled with the driving gear. One end of the reversing cylinder is also provided with an internal tooth hole, and the transmission gear is fixedly assembled on one side of the reversing cylinder, and one end of the transmission gear is movably connected to the driving gear, and the other end of the transmission gear is movably connected to the outer gear ring.

[0010] As a further solution of the present invention, the guide shell assembly also includes a side pressure chamber, a pressure sensor, an inner ring groove, an inlet and an inlet pipe. The side pressure chamber is arranged at one end of the rear panel, and the pressure sensor is fixedly arranged in the side pressure chamber for measuring the fluid pressure in the first groove cavity. The inner ring groove is fixedly arranged at the inner diameter end of the guide shell body. The membrane cylinder assembly also includes a partition plate, which is limitedly assembled in the inner ring groove, and the two groups of ceramic membrane cylinders are rotatably assembled on the partition plate. The two groups of inlets are fixedly arranged on one side of the front panel, and the inlet is connected to the inlet with an inlet pipe. The two groups of inlet pipes are respectively used to transport sewage to be treated to the dead end filtration side and the cross-flow filtration side.

[0011] As a further solution of the present invention, the high-throughput silicon carbide ceramic membrane filtration device also includes an inlet assembly, which includes a side bracket, a sewage pipe, a shut-off valve, a driver, a traction rod, a slide member, a sliding pin and a driving wheel. The side bracket is fixedly arranged at one end of the guide shell body, the two groups of sewage pipes are respectively connected to the two groups of inlet pipes, and a shut-off valve is also arranged between the inlet pipe and the sewage pipe. The driver is fixedly assembled on the side bracket, and a traction rod is also assembled on the movable shaft of the driver. The slide member is fixedly arranged on both sides of the traction rod, one end of the sliding pin is slidably assembled in the slide member, and the other end of the sliding pin is inserted in the shut-off valve, and the driving wheel is slidably assembled on the driving shaft to drive the driving shaft to rotate.

[0012] As a further solution of the present invention, the high-throughput silicon carbide ceramic membrane filtration device also includes a speed regulating mechanism, which includes a shunt pipe, a drainage pipe, a telescopic driver and a columnar member. The shunt pipe is fixedly arranged on one side of the rear panel, and a drainage pipe is provided at the end of the shunt pipe. The telescopic driver is fixedly assembled on the shunt pipe, and the movable shaft of the telescopic driver is passed through the shunt pipe and fixedly connected to the columnar member. The columnar member is movably arranged in the shunt pipe and the ceramic membrane cylinder.

[0013] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: The present invention provides a rotatable and rotating membrane cylinder unit in the guide cylinder unit, which can enable the two groups of silicon carbide ceramic membranes to always maintain a rotating state during the filtration process, so that the pollutants can be evenly distributed on the membrane layer, avoiding the deep deposition of pollutants in a specific area during dead-end filtration. At the same time, the two groups of membrane bodies are cyclically switched between the dead-end filtration station and the cross-flow filtration station, which can effectively reduce the formation of filter cakes and ensure that the device is in a high membrane flux state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a partial cross-sectional view of a high-throughput silicon carbide ceramic membrane filtration device provided in one embodiment of the present invention.

[0015] Figure 2 This is a schematic structural diagram of a high-throughput silicon carbide ceramic membrane filtration device provided in one embodiment of the present invention.

[0016] Figure 3 for Figure 2 An enlarged schematic diagram of the figure marked A.

[0017] Figure 4 for Figure 2 An enlarged schematic diagram of the figure marked B.

[0018] Figure 5 This is a schematic side structural diagram of a high-throughput silicon carbide ceramic membrane filtration device provided in one embodiment of the present invention.

[0019] Figure 6 for Figure 5 An enlarged schematic diagram of the figure marked C.

[0020] Figure 7 for Figure 5 An enlarged schematic diagram of the figure marked D.

[0021] Reference numerals: 1- flow guide housing assembly, 101- flow guide housing body, 102- front panel, 103- rear panel, 104- diverter housing cavity, 1041- first groove cavity, 1042- second groove cavity, 105- discharge pipe, 106- side pressure cavity, 107- pressure sensor, 108- inner ring groove, 109- inlet, 110- inlet pipe, 2- membrane cylinder assembly, 201- reversing cylinder, 202- columnar groove, 2021- first columnar groove, 2022- second columnar groove, 203- ceramic membrane cylinder, 204 -External gear ring, 205-front sliding surface, 206-rear sliding surface, 207-partition plate, 208-driving shaft, 209-driving gear, 210-inner tooth hole, 211-transmission gear, 3-inlet assembly, 301-side bracket, 302-sewage pipe, 303-shutoff valve, 304-driver, 305-traction rod, 306-chute member, 307-sliding pin, 308-driving wheel, 4-speed regulating mechanism, 401-diverter pipe, 402-drainage pipe, 403-telescopic driver, 404-column member. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figure 1-Figure 7The high-throughput silicon carbide ceramic membrane filtration device in one embodiment of the present invention includes a flow guide cylinder unit and a rotating membrane cylinder unit, wherein the flow guide cylinder unit is provided with two sets of pipes for pumping fluid, and the two sets of pipes are respectively used for dead-end filtration and cross-flow filtration of the silicon carbide ceramic membrane, and the rotating membrane cylinder unit is rotatably installed inside the flow guide cylinder unit, and two sets of silicon carbide ceramic membrane cylinders are provided in the rotating membrane cylinder unit, and the two sets of silicon carbide ceramic membrane cylinders rotate in the flow guide cylinder unit, and the working states of the silicon carbide ceramic membrane cylinders are cyclically switched to clean the pollutants on the surface of the ceramic membrane; the flow guide cylinder unit includes a flow guide shell assembly 1, and the flow guide shell assembly 1 includes a guide shell body 101, a front panel 102 and a rear panel 103, and the front panel 102 and the rear panel 103 are respectively provided at both ends of the guide shell body 101; the rotating membrane cylinder unit includes a membrane cylinder assembly 2, and the membrane cylinder assembly 2 includes a reversing cylinder 201, a columnar groove 202 and a ceramic membrane cylinder 203. The reversing cylinder 201 is rotatably arranged in the guide shell body 101, and a gap is set between one end surface of the reversing cylinder 201 and the rear panel 103. Two groups of columnar grooves 202 are arranged circumferentially on the reversing cylinder 201, and the two groups of ceramic membrane cylinders 203 are rotatably assembled in the two groups of columnar grooves 202.

[0024] In actual application of this embodiment, the high-throughput silicon carbide ceramic membrane filtration device includes a guide tube unit and a rotating membrane tube unit. The main structure of the guide tube unit is composed of a guide shell body 101. The two ends of the guide shell body 101 are respectively provided with a front panel 102 and a rear panel 103. One side of the front panel 102 is connected with two groups of pipes for pumping pollutant fluids. The reversing tube 201 is rotatably assembled in the guide shell body 101, and two groups of independent columnar grooves 202 are provided inside the reversing tube 201. The ceramic membrane tube 203 is rotatably arranged in the columnar groove 2 02, a communicating notch is further provided between the cylindrical groove 202 and the outer cylinder surface of the reversing cylinder 201, and a gap is provided between the outer wall of the reversing cylinder 201 and the inner wall of the guide shell body 101, so that during the rotation of the reversing cylinder 201, the filtered liquid obtained by filtering the silicon carbide ceramic membrane cylinder can be independently output through the notch, and a dead-end filtration station and a cross-flow filtration station are respectively provided on one side of the cavity bottom and the cavity top of the guide shell body 101. When a group of ceramic membrane cylinders 203 are filtering sewage at the dead-end filtration station, the sewage is transported to the inner diameter end of the ceramic membrane cylinder 203 through a pipeline, so that the sewage is filtered through the dead-end filtration station. When passing through the ceramic membrane cylinder 203, the pollutants thereon are trapped in the porous structure of the silicon carbide ceramic membrane. Since the ceramic membrane cylinder 203 always keeps rotating during the filtration process and a fixed notch is provided on one side of the columnar groove 202, the pollutants can be evenly retained on the inner membrane surface of the ceramic membrane cylinder 203, thereby avoiding the concentration of pollutants in a specific area of the silicon carbide ceramic membrane during dead-end filtration, reducing the depth of pollutant deposition on the membrane surface, avoiding excessive deposition and difficulty in cleaning pollutants, and thus preventing the rapid reduction of membrane flux. When the membrane pressure on one side of the dead-end filtration station reaches the threshold, the membrane pressure is driven to The cylinder 201 is rotated to rotate the ceramic membrane cylinder 203 on the cross-flow filtration side to the dead-end filtration station side, and the ceramic membrane cylinder 203 on the dead-end filtration side is rotated to the cross-flow filtration station side. Since the sewage on the cross-flow filtration station side flows at a high flow rate parallel to the membrane surface, and driven by pressure, a small amount of fluid vertically passes through the membrane layer and is discharged from the notch on the cross-flow filtration station side, while a large amount of remaining fluid, in the process of flowing parallel to the membrane surface, can wash away the retained materials on the inner wall of the ceramic membrane cylinder 203 along the membrane surface, so that the concentrated liquid containing a large amount of pollutants is discharged independently along the ceramic membrane cylinder 203. The ceramic membrane cylinder 203 on the dead-end filtration station side, on the one hand, evenly retains pollutants on the membrane surface, reducing the deep deposition of pollutants. On the other hand, when the membrane pressure reaches a threshold, the ceramic membrane cylinder 203 on the dead-end filtration station and the cross-flow filtration station can be quickly switched, thereby ensuring that the filtration device always maintains a high-throughput working state.

[0025] See also Figure 2In a preferred embodiment of the present invention, the diversion shell assembly 1 further includes a diverter shell cavity 104 and a drainage pipe 105. The two groups of diverter shell cavities 104 are respectively arranged on the bottom and top sides of the diversion shell body 101, and the diverter shell cavities 104 are respectively connected to two groups of drainage pipes 105. The diverter shell cavity 104 on the bottom side of the diversion shell body 101 is set as a relative first slot cavity 1041, and the diverter shell cavity 104 on the top side of the diversion shell body 101 is set as a relative second slot cavity 1042. The first slot cavity 1041 is used to recover the filtered liquid on the dead-end filtration side, and the second slot cavity 1042 is used to recover the filtered liquid on the cross-flow filtration side.

[0026] In actual application of this embodiment, the top and bottom sides of the diversion shell body 101 are both provided with a diversion shell cavity 104, and the diversion shell cavity 104 is connected to a drainage pipe 105, and the drainage pipe 105 is used to output the filtered liquid independently. The two groups of diversion shell cavities 104 are respectively provided with a first groove cavity 1041 and a second groove cavity 1042 relative to each other. The first groove cavity 1041 is used to recover the filtered liquid on the dead-end filtering station side, and the second groove cavity 1042 is used to recover the filtered liquid on the cross-flow filtering station side. The reversing cylinder 201 is 180 degrees in the circumferential direction. ° rotated so that the two groups of ceramic membrane cylinders 203 arranged thereon can be cyclically switched between the dead-end filtration station and the cross-flow filtration station. A notch is provided on one side of the columnar groove 202, so that when the sewage enters the dead-end filtration station side, it can only flow through the ceramic membrane cylinder 203 and the notch on the side of the columnar groove 202 to the first groove cavity 1041, and when the sewage enters the cross-flow filtration station side, a small amount of filtered liquid can flow through the ceramic membrane cylinder 203 and the notch on the side of the columnar groove 202 to the second groove cavity 1042, and the remaining large amount of sewage is discharged from the independent pipe on the side of the cross-flow filtration station.

[0027] See also Figure 3 、 Figure 4 and Figure 6In a preferred embodiment of the present invention, the membrane cylinder assembly 2 further includes an outer gear ring 204, a front sliding surface 205, a rear sliding surface 206, a partition plate 207, a driving shaft 208, a driving gear 209, an inner gear hole 210 and a transmission gear 211. The ceramic membrane cylinder 203 is also provided with an outer gear ring 204 at one end close to the front panel 102. The outer gear ring 204 is fixedly assembled on the outer diameter of the ceramic membrane cylinder 203. The front sliding surface 205 and the rear sliding surface 206 are respectively provided at both ends of the reversing cylinder 201. The front sliding surface 205 and the front sliding surface 206 are respectively provided at both ends of the reversing cylinder 201. The panel 102 is fitted together, the rear sliding surface 206 and the rear panel 103 are fitted together, the partition plate 207 is rotatably assembled in the deflector shell body 101, the driving shaft 208 is inserted on the front panel 102 and the end of the driving shaft 208 is coaxially fixedly assembled with a driving gear 209, one end of the reversing cylinder 201 is also provided with an internal tooth hole 210, the transmission gear 211 is fixedly assembled on one side of the reversing cylinder 201, and one end of the transmission gear 211 is movably connected to the driving gear 209, and the other end of the transmission gear 211 is movably connected to the outer gear ring 204.

[0028] In actual application of this embodiment, the two groups of columnar grooves 202 in the reversing cylinder 201 are respectively set as the first columnar groove 2021 and the second columnar groove 2022. The first columnar groove 2021 is set near the dead-end filtration station on the bottom side of the diversion shell main body 101 cavity, and the second columnar groove 2022 is set near the cross-flow filtration station on the top side of the diversion shell main body 101 cavity. The outer gear ring 204 is set at one end of the ceramic membrane cylinder 203 and arranged on the outer diameter side of the ceramic membrane cylinder 203. The inner ring groove 108 is set on the inner diameter side of the diversion shell main body 101 and is set near one end of the front panel 102. The partition plate 207 is limited and rotatably assembled in the inner ring groove 108, and the two groups of ceramic membrane cylinders 203 are both rotatably set on the partition plate 207. When the driving shaft 208 moves toward one side of the reversing cylinder 201 in the driving state, the driving gear 209 on the end side of the driving shaft 208 is released from the transmission gear 211 The driving shaft 208 drives the inner tooth hole 210 to rotate during the rotation, thereby driving the reversing cylinder 201 to rotate axially as a whole, so as to realize the exchange of the ceramic membrane cylinder 203 on the dead-end filtration station side and the ceramic membrane cylinder 203 on the cross-flow filtration station side. When the driving shaft 208 moves toward the side away from the reversing cylinder 201, the driving gear 209 on the end side of the driving shaft 208 slips off the inner tooth hole 210 and meshes with the transmission gear 211 again. Since the transmission gear 211 is meshed with the outer gear ring 204, the driving shaft 208 can synchronously drive the outer gear ring 204 on the two groups of ceramic membrane cylinders 203 to rotate during the rotation, thereby causing the ceramic membrane cylinders 203 in the first cylindrical groove 2021 and the second cylindrical groove 2022 to rotate at the same time, ensuring that the pollutants are evenly covered on the membrane layer during the filtration process to reduce the deep deposition of pollutants in a specific area.

[0029] See also Figure 4 and Figure 6 In a preferred embodiment of the present invention, the guide shell assembly 1 also includes a side pressure chamber 106, a pressure sensor 107, an inner annular groove 108, an inlet 109 and an inlet pipe 110, the side pressure chamber 106 is arranged at one end of the rear panel 103, the pressure sensor 107 is fixedly arranged in the side pressure chamber 106, and is used to measure the fluid pressure in the first groove cavity 1041, the inner annular groove 108 is fixedly arranged at the inner diameter end of the guide shell body 101, the membrane cylinder assembly also includes a partition plate 207, the partition plate 207 is limitedly assembled in the inner annular groove 108, and the two groups of ceramic membrane cylinders 203 are rotatably assembled on the partition plate 207, the two groups of inlets 109 are fixedly arranged on one side of the front panel 102, and the inlet 109 is connected to the inlet pipe 110, and the two groups of inlet pipes 110 are respectively used to transport the sewage to be treated to the dead end filtration side and the cross-flow filtration side.

[0030] In actual application of this embodiment, the side pressure chamber 106 is arranged at one end of the rear panel 103, and the side pressure chamber 106 is arranged close to the side of the first slot chamber 1041. The pressure sensor 107 arranged in the side pressure chamber 106 is used to detect the membrane pressure at the dead-end filtration station, and the controller assembled at one end of the pressure sensor 107 is electrically connected to multiple groups of driving sources in the device. The specific structure of the control module is not limited here. When the membrane pressure on the ceramic membrane cylinder 203 on the dead-end filtration station side exceeds the threshold range, the reversing cylinder 201 moves along the circle in the driving state. The front panel 102 is rotated 180 degrees in the circumferential direction to exchange the positions of the ceramic membrane cylinders 203 on the dead-end filtration station and the cross-flow filtration station. Two groups of flow inlets 109 are also provided on one side of the front panel 102. The two groups of flow inlets 109 are respectively connected to the first columnar groove 2021 and the second columnar groove 2022, and the first columnar groove 2021 is provided on one side of the first groove cavity 1041, and the second columnar groove 2022 is provided on one side of the second groove cavity 1042, so that the input sewage is transported to the dead-end filtration station and the cross-flow filtration station along the two groups of guide grooves for treatment.

[0031] See also Figure 6In a preferred embodiment of the present invention, the high-throughput silicon carbide ceramic membrane filtration device further includes an inlet assembly 3, which includes a side bracket 301, a sewage pipe 302, a shut-off valve 303, a driver 304, a traction rod 305, a chute 306, a sliding pin 307 and a driving wheel 308. The side bracket 301 is fixedly arranged at one end of the guide shell body 101, and the two groups of sewage pipes 302 are respectively connected to the two groups of inlet pipes 110. The inlet pipes 110 and A shut-off valve 303 is also provided between the sewage pipes 302. The driver 304 is fixedly mounted on the side bracket 301, and a traction rod 305 is also mounted on the movable shaft of the driver 304. The slide member 306 is fixedly arranged on both sides of the traction rod 305. One end of the sliding pin 307 is slidably assembled in the slide member 306, and the other end of the sliding pin 307 is inserted into the shut-off valve 303. The driving wheel 308 is slidably assembled on the driving shaft 208 for driving the driving shaft 208 to rotate.

[0032] In actual application of this embodiment, the side bracket 301 is fixedly arranged on one side of the guide shell body 101, and the two groups of sewage pipes 302 assembled on the side bracket 301 are respectively connected to the two groups of inlet pipes 110 through the shut-off valve 303. A sliding pin 307 is slidingly provided on one side of the shut-off valve 303. The sliding pin 307 is used to adjust the opening and closing of the shut-off valve 303. The driver 304 is electrically connected to the controller. When the pressure sensor 107 detects that the membrane pressure at the dead-end filtration station is high, the driver 304 is controlled to start, so that the traction rod 305 pushes the driving shaft 208 to the side of the reversing cylinder 201 along the layout direction, so that the driving gear 209 engages and abuts against the inner tooth hole 210, thereby making the two groups of ceramic membrane cylinders 203 actually work at the station. Now it is switched, and during the movement of the traction rod 305, the slide groove part 306 thereon slides and abuts against the slide pin 307, thereby controlling the extension and contraction of the slide pin 307, so that the two groups of shut-off valves 303 are in a closed state during the switching process, reducing the leakage of sewage during the reversing process. When the ceramic membrane cylinder 203 on the first groove cavity 1041 and the second groove cavity 1042 side are switched, the driver 304 drives the traction rod 305 to return to the initial position, thereby allowing the two groups of inlet pipes 110 to resume the input of sewage, and the driving wheel 308 is slidably assembled on one side of the driving shaft 208, and the driving wheel 308 is driven by an external driving source, so that the driving shaft 208 can be extended and retracted while also being able to rotate axially, thereby driving the driving gear 209 to rotate.

[0033] See also Figure 2In a preferred embodiment of the present invention, the high-throughput silicon carbide ceramic membrane filtration device also includes a speed regulating mechanism 4, which includes a shunt tube 401, a drainage tube 402, a telescopic driver 403 and a columnar member 404. The shunt tube 401 is fixedly arranged on one side of the rear panel 103, and a drainage tube 402 is provided at the end of the shunt tube 401. The telescopic driver 403 is fixedly assembled on the shunt tube 401. The movable shaft of the telescopic driver 403 is passed through the shunt tube 401 and is fixedly connected to the columnar member 404. The columnar member 404 is movably arranged in the shunt tube 401 and the ceramic membrane cylinder 203.

[0034] In actual application of this embodiment, the diverter pipe 401 is fixedly arranged at one end of the rear panel 103, and the diverter pipe 401 is arranged on one side of the second slot cavity 1042, so that the concentrated sewage at the cross-flow filtration station flows along the second columnar slot 2022 into the diverter pipe 401 and is discharged from the drainage pipe 402 at the end side of the diverter pipe 401. The telescopic driver 403 at one end of the diverter pipe 401 can control the telescopic movement of the columnar member 404 in the ceramic membrane cylinder 203. When the columnar member 404 extends into the ceramic membrane cylinder 203 at the cross-flow filtration station along the axial direction, the pressure at the sewage input end is increased. The force is constant. Due to the obstruction of the cylindrical member 404, the original flow area is reduced. Under the Bernoulli principle, when the input pressure is constant, the flow area is reduced and the fluid flow rate increases, so that the fluid flows at high speed between the inner wall of the ceramic membrane cylinder 203 and the outer wall of the cylindrical member 404, and then the shear force generated by the fluid acts on the surface of the membrane layer, and the pollutants are washed away by the cross-flow flow rate to avoid the formation of a dead zone with deep deposition. When the membrane pressure of the ceramic membrane cylinder 203 on the dead-end filtration station side is too high, the telescopic drive 403 pulls the cylindrical member 404 out of the cross-flow filtration station to avoid mechanical interference during the replacement process.

[0035] The above-mentioned embodiment of the present invention provides a high-throughput silicon carbide ceramic membrane filtration device. By arranging a rotatable and rotating membrane cylinder unit in the guide cylinder unit, the two groups of silicon carbide ceramic membranes can always maintain a rotating state during the filtration process, so that the pollutants can be evenly distributed on the membrane layer, avoiding the deep deposition of pollutants in specific areas during dead-end filtration. At the same time, the two groups of membrane bodies can be cyclically switched between the dead-end filtration station and the cross-flow filtration station, which can effectively reduce the formation of filter cakes and ensure that the device is in a high membrane flux state.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-throughput silicon carbide ceramic membrane filtration device, characterized in that: The high-throughput silicon carbide ceramic membrane filtration device comprises: The flow guide cylinder unit and the rotating membrane cylinder unit are provided with two sets of pipes for pumping fluid, and the two sets of pipes are used for dead-end filtration and cross-flow filtration of the silicon carbide ceramic membrane respectively. The rotating membrane cylinder unit is rotatably installed inside the flow guide cylinder unit, and two sets of silicon carbide ceramic membrane cylinders are provided in the rotating membrane cylinder unit. The two sets of silicon carbide ceramic membrane cylinders rotate in the flow guide cylinder unit, and the working state of the silicon carbide ceramic membrane cylinders is cyclically switched to clean the pollutants on the surface of the ceramic membrane; The guide tube unit includes a guide shell assembly, which includes a guide shell body, a front panel and a rear panel. The front panel and the rear panel are respectively provided at both ends of the guide shell body. The rotating membrane cylinder unit includes a membrane cylinder assembly, which includes a reversing cylinder, a columnar groove and a ceramic membrane cylinder. The reversing cylinder is rotatably arranged in the guide shell body, and a gap is set between one side end face of the reversing cylinder and the rear panel. Two groups of columnar grooves are circumferentially arranged on the reversing cylinder, and the two groups of ceramic membrane cylinders are respectively rotatably assembled in the two groups of columnar grooves.

2. A high-throughput silicon carbide ceramic membrane filtration device according to claim 1, characterized in that: The guide shell assembly also includes a diverter shell cavity and a drainage pipe. The two groups of diverter shell cavities are respectively arranged on the bottom and top sides of the guide shell body, and the diverter shell cavities are respectively connected to two groups of drainage pipes. The diverter shell cavity on the bottom side of the guide shell body cavity is set as a relative first groove cavity, and the diverter shell cavity on the top side of the guide shell body cavity is set as a relative second groove cavity. The first groove cavity is used to recover the filtered liquid on the dead-end filtration side, and the second groove cavity is used to recover the filtered liquid on the cross-flow filtration side.

3. A high-throughput silicon carbide ceramic membrane filtration device according to claim 1, characterized in that: The membrane cylinder assembly also includes an outer gear ring, a front sliding surface and a rear sliding surface. The ceramic membrane cylinder is also provided with an outer gear ring at one end close to the front panel. The outer gear ring is fixedly assembled on the outer diameter of the ceramic membrane cylinder. The front sliding surface and the rear sliding surface are respectively arranged at the two ends of the reversing cylinder. The front sliding surface is fitted with the front panel, and the rear sliding surface is fitted with the rear panel.

4. A high-throughput silicon carbide ceramic membrane filtration device according to claim 1, characterized in that: The membrane cylinder assembly also includes a partition plate, a driving shaft, a driving gear, an inner tooth hole and a transmission gear. The partition plate is rotatably assembled in the guide shell body, the driving shaft is inserted on the front panel and the driving gear is coaxially fixedly assembled at the end of the driving shaft. An inner tooth hole is also provided at one end of the reversing cylinder. The transmission gear is fixedly assembled on one side of the reversing cylinder, and one end of the transmission gear is movably connected to the driving gear, and the other end of the transmission gear is movably connected to the outer gear ring.

5. A high-throughput silicon carbide ceramic membrane filtration device according to claim 2, characterized in that: The guide shell assembly also includes a side pressure chamber, a pressure sensor, an inner ring groove, an inlet and an inlet pipe. The side pressure chamber is arranged at one end of the rear panel. The pressure sensor is fixedly arranged in the side pressure chamber for measuring the fluid pressure in the first groove cavity. The inner ring groove is fixedly arranged at the inner diameter end of the guide shell body. The membrane cylinder assembly also includes a partition plate, which is limitedly assembled in the inner ring groove, and the two groups of ceramic membrane cylinders are rotatably assembled on the partition plate. The two groups of inlets are fixedly arranged on one side of the front panel, and the inlet is connected to the inlet. The two groups of inlet pipes are respectively used to transport sewage to be treated to the dead end filtration side and the cross-flow filtration side.

6. A high-throughput silicon carbide ceramic membrane filtration device according to claim 1, characterized in that: The high-throughput silicon carbide ceramic membrane filtration device also includes an inlet assembly, which includes a side bracket, a sewage pipe, a shut-off valve, a driver, a traction rod, a slide member, a sliding pin and a driving wheel. The side bracket is fixedly arranged at one end of the guide shell body, and the two groups of sewage pipes are respectively connected to the two groups of inlet pipes. A shut-off valve is also arranged between the inlet pipe and the sewage pipe. The driver is fixedly assembled on the side bracket, and a traction rod is also assembled on the movable shaft of the driver. The slide member is fixedly arranged on both sides of the traction rod. One end of the sliding pin is slidably assembled in the slide member, and the other end of the sliding pin is inserted into the shut-off valve. The driving wheel is slidably assembled on the driving shaft to drive the driving shaft to rotate.

7. A high-throughput silicon carbide ceramic membrane filtration device according to claim 1, characterized in that: The high-throughput silicon carbide ceramic membrane filtration device also includes a speed regulating mechanism, which includes a shunt pipe, a drainage pipe, a telescopic driver and a columnar member. The shunt pipe is fixedly arranged on one side of the rear panel, and a drainage pipe is provided at the end of the shunt pipe. The telescopic driver is fixedly assembled on the shunt pipe, and the movable shaft of the telescopic driver is passed through the shunt pipe and fixedly connected to the columnar member. The columnar member is movably arranged in the shunt pipe and the ceramic membrane cylinder.

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