Anti-fouling and anti-blocking device for sewage treatment ceramic membrane

Abstract

The utility model discloses an anti-fouling and anti-blocking device for a sewage treatment ceramic membrane, and relates to the technical field of industrial sewage treatment. The device comprises a ceramic membrane tube which is vertically arranged; covers are correspondingly sealed and fixed at the upper and lower ends of the ceramic membrane tube; a packaging shell is sleeved outside the ceramic membrane tube; the ceramic membrane tube is positioned on the lower side in the packaging shell; the cover cap is fixed to the packaging shell through a supporting column. The lower end of the packaging shell fixedly communicates with a drainage pipe. Water inlet pipes are fixedly communicated with the covers respectively; the water inlet pipes penetrate through the packaging shell in a sealed mode and communicate with a collecting pipe arranged outside the packaging shell. The ceramic membrane tube is provided with a back-flushing decontamination assembly; the back-flushing pollution discharge assembly comprises an expansion piece fixed at the upper end of the packaging shell; the telescopic end of the telescopic device vertically and downwards extends into the packaging shell and is fixedly provided with a supporting frame. The industrial sewage filter has the beneficial effects that the industrial sewage filter can filter industrial sewage, and meanwhile, the ceramic membrane tube can be continuously backflushed and decontaminated, so that the workload is reduced, and the treatment efficiency of the industrial sewage is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial sewage treatment, in particular to an anti-fouling and blocking device for a sewage treatment ceramic membrane. Background Art

[0002] Ceramic membranes are made of silicon carbide, aluminum oxide or zirconium oxide and other materials through high-temperature sintering. The formed ceramic membrane is tubular. The filtering method is that the raw water flows through the flow channel in the membrane tube, and the clean water seeps out from the side wall through the pressure. Usually, water molecules, ions, and small molecules can pass through the membrane surface, and organic matter, colloids, inorganic scaling substances, silt particles, microorganisms, etc. will be retained on the membrane surface. However, as the filtration time accumulates, more and more substances are retained on the membrane surface, resulting in a decrease in the membrane filtration flux, and even causing the membrane to be unable to continue to be used, which hinders its wide application in practice, especially for ceramic membranes used in sewage treatment processes, where fouling and blockage can occur at any time.

[0003] In the process of industrial wastewater treatment, due to the large amount of pollutants, the ceramic membrane can filter and intercept a large amount of pollutants in a short period of time, causing pollution blockage to occur at any time. Therefore, when using ceramic membranes to filter industrial wastewater, in order to ensure the filtering effect of the ceramic membrane, the ceramic membrane needs to be stopped at short intervals for flushing or replacement, which not only increases the workload of the staff, but also seriously affects the efficiency of wastewater treatment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an anti-fouling and clogging device for ceramic membranes for sewage treatment in view of the above-mentioned technical deficiencies. The device can continuously backwash and remove dirt from the ceramic membrane tubes while maintaining the filtration work of industrial sewage, thereby reducing the workload and ensuring the treatment efficiency of industrial sewage.

[0005] The technical solution adopted by the utility model is: to provide an anti-fouling and blocking device for a ceramic membrane for sewage treatment, comprising a ceramic membrane tube, which is arranged vertically; the upper and lower ends of the ceramic membrane tube are respectively and correspondingly sealed and fixed with covers; the outer side of the ceramic membrane tube is covered with a packaging shell; the ceramic membrane tube is located at the lower side of the packaging shell; the cover is fixed to the packaging shell through a support; the lower end of the packaging shell is fixedly connected with a drain pipe; the cover is respectively fixedly connected with a water inlet pipe; the water inlet pipes are all sealed and pass through the packaging shell and are connected with a collecting pipe arranged outside the packaging shell; a backwash sewage discharge component is arranged on the ceramic membrane tube;

[0006] The recoil drainage assembly comprises a telescopic device fixed at the upper end of the packaging shell; the telescopic end of the telescopic device vertically extends downward into the packaging shell and is fixed with a support frame; an extension rod, a recoil pipe and a plurality of sewage extraction pipes are respectively fixed vertically on the lower side of the support frame; an annular liquid collection shell is fixed at the lower end of the extension rod; the liquid collection shell is correspondingly slidably sleeved on the outside of the ceramic membrane tube; a flushing bin is provided between the inside of the liquid collection shell and the outer wall of the ceramic tube; the lower end of the recoil pipe is connected with the flushing bin; the upper end of the recoil pipe is fixedly connected with a telescopic introduction pipe; the upper end of the telescopic introduction pipe is sealed and penetrates the outer wall of the packaging shell; the plurality of sewage extraction pipes are all slidably and sealably penetrated through the upper cover, and extend one by one into the plurality of cavities of the ceramic membrane tube; a dirt blocking member is provided in each cavity of the ceramic membrane tube;

[0007] The dirt blocking member includes two blocking plates, one above and one below; the blocking plate slides correspondingly with the cavity of the ceramic membrane tube; the two corresponding blocking plates are connected by a connecting rod; the sewage extraction pipe is fixed one by one to the blocking plate on the upper side; the sewage extraction pipe is sealed and penetrated between the two corresponding blocking plates; the dirt blocking member is at a height corresponding to that of the liquid collecting shell; the upper ends of the sewage extraction pipes are connected to the telescopic lead-out pipes fixed on the support frame; the upper ends of the telescopic lead-out pipes are sealed and penetrate the outer wall of the packaging shell.

[0008] To further optimize the technical solution, a three-way valve is arranged on the outside of the packaging shell of an anti-fouling device for a sewage treatment ceramic membrane; one port of the three-way valve is connected to the upper end of the telescopic inlet pipe, and the other two ports are respectively connected to the liquid injection pipe and the air pressure pipe.

[0009] To further optimize the technical solution, an ultrasonic transducer is fixed to the outer wall of the packaging shell of an anti-fouling and clogging device for a sewage treatment ceramic membrane.

[0010] To further optimize the technical solution, the surfaces of the blocking plate and the connecting rod of an anti-fouling device for a sewage treatment ceramic membrane are coated with a ceramic coating.

[0011] The beneficial effects of the utility model are:

[0012] 1. Industrial sewage can be input from both ends of the ceramic membrane tube through the water inlet pipe connected on the two covers; filtered produced water can be discharged through the drain pipe connected at the lower end of the packaging shell; the cover is fixed to the packaging shell through a support, so as to achieve the effect of positioning the ceramic membrane tube inside the packaging shell; an annular liquid collection shell is fixed at the lower end of the telescopic rod, and the liquid collection shell is correspondingly slidably sleeved on the outside of the ceramic membrane tube, and a flushing chamber is arranged between the inside of the liquid collection shell and the outer wall of the ceramic tube, and the backwashing pipe is connected to the flushing chamber, and flushing liquid can be injected into the flushing chamber through the backwashing pipe. Through the action of pressure, the flushing liquid penetrates from the outside of the ceramic membrane tube to the inside, so as to achieve a backwashing effect on the inner wall of the ceramic membrane tube.

[0013] 2. The sewage suction pipe seal is inserted between the two corresponding blocking pieces at the upper and lower parts. The dirt blocking piece corresponds to the height of the liquid collecting shell. The dirt that is flushed down from the inner wall of the ceramic membrane tube by the flushing liquid can be sucked away through the sewage suction pipe. Through the telescopic effect of the telescope, the liquid collecting shell and the dirt blocking piece can be driven to move along the height of the ceramic membrane tube, thereby achieving comprehensive decontamination of all parts of the ceramic membrane tube, ensuring that the ceramic membrane tube can continuously filter and treat sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the backwash sewage discharge component.

[0016] In the figure, 1. ceramic membrane tube; 2. cover; 3. packaging shell; 4. support; 5. drain pipe; 6. water inlet pipe; 7. collecting pipe; 8. telescopic device; 9. support frame; 10. extension rod; 11. recoil pipe; 12. sewage extraction pipe; 13. liquid collecting shell; 14. flushing chamber; 15. telescopic inlet pipe; 16. blocking plate; 17. connecting rod; 18. telescopic outlet pipe; 19. three-way valve; 20. liquid injection pipe; 21. air compressor pipe; 22. ultrasonic transducer. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 As shown, a fouling and blocking prevention device for a ceramic membrane for sewage treatment comprises a ceramic membrane tube 1, which is arranged vertically; a cover 2 is sealed and fixed to the upper and lower ends of the ceramic membrane tube 1; a packaging shell 3 is sleeved on the outside of the ceramic membrane tube 1; the ceramic membrane tube 1 is located at the lower side of the inside of the packaging shell 3; the cover 2 is fixed to the packaging shell 3 through a support 4; a drain pipe 5 is fixedly connected to the lower end of the packaging shell 3; a water inlet pipe 6 is fixedly connected to the cover 2; the water inlet pipe 6 is sealed and passes through the packaging shell 3 and is connected to a collecting pipe 7 arranged outside the packaging shell 3; a backwash sewage discharge component is arranged on the ceramic membrane tube 1;

[0019] like Figure 1-2As shown, the recoil sewage discharge assembly includes a telescopic device 8 fixed at the upper end of the packaging shell 3; the telescopic end of the telescopic device 8 extends vertically downward into the packaging shell 3 and is fixed with a support frame 9; the lower side of the support frame 9 is respectively fixed with an extension rod 10, a recoil pipe 11 and a plurality of sewage extraction pipes 12 along the vertical direction; the lower end of the extension rod 10 is fixed with an annular liquid collection shell 13; the liquid collection shell 13 is correspondingly slidably sleeved on the outside of the ceramic membrane tube 1; a flushing chamber 14 is arranged between the inside of the liquid collection shell 13 and the outer wall of the ceramic tube; the lower end of the recoil pipe 11 is connected with the flushing chamber 14; the upper end of the recoil pipe 11 is fixedly connected with a telescopic introduction pipe 15; the upper end of the telescopic introduction pipe 15 seals and penetrates the outer wall of the packaging shell 3; the plurality of sewage extraction pipes 12 all slide and seal and penetrate the upper cover 2, and extend into the plurality of cavities of the ceramic membrane tube 1 one by one; each cavity of the ceramic membrane tube 1 is provided with a dirt blocking member;

[0020] like Figure 2 As shown, the dirt blocking member includes two blocking sheets 16, one above and one below; the blocking sheet 16 slides correspondingly with the cavity of the ceramic membrane tube 1; the two corresponding blocking sheets 16 are connected by a connecting rod 17; the sewage extraction pipe 12 is fixed one by one to the blocking sheet 16 on the upper side; the sewage extraction pipe 12 is sealed and penetrated between the two corresponding blocking sheets 16 above and below; the dirt blocking member corresponds to the height of the liquid collecting shell 13; the upper ends of the sewage extraction pipes 12 are connected to the telescopic lead-out pipes 18 fixed on the support frame 9; the upper ends of the telescopic lead-out pipes 18 are sealed and penetrate the outer wall of the packaging shell 3.

[0021] When filtering industrial wastewater, the wastewater is introduced through the collecting pipe 7, and the wastewater is input from both ends of the ceramic membrane tube 1 through the water inlet pipe 6, and is filtered by the ceramic membrane tube 1. The filtered water seeps out from the outer wall of the ceramic membrane tube 1 into the packaging shell 3, and then the filtered water can be discharged through the drain pipe 5.

[0022] The backwash sewage discharge component in the present technical solution can keep working while the sewage filtering is in progress. There is no need to stop the filtering work before backwashing sewage discharge, which ensures the filtering and treatment efficiency of industrial sewage. Moreover, the operation of the backwash sewage discharge component can effectively save manpower and reduce the labor intensity and work burden of the staff.

[0023] Specifically, the telescopic inlet pipe 15 is connected to the external flushing liquid supply system (for example, using a booster pump to inject liquid), and flushing liquid is continuously injected into the telescopic inlet pipe 15; the telescopic outlet pipe 18 is connected to the external liquid extraction device (for example, using a sewage pump to extract sewage), and sewage is continuously extracted.

[0024] The flushing liquid enters the flushing chamber 14 through the telescopic introduction pipe 15 and the backwashing pipe 11, and then penetrates inward through the outer wall of the ceramic membrane tube 1, achieving a backwashing effect on the inner wall of the ceramic membrane tube 1 at the corresponding position of the flushing chamber 14. Through the backwashing effect, the dirt blocked on the inner wall of the ceramic membrane tube 1 is effectively removed, and the removed dirt is confined between the two blocking sheets 16 to prevent it from falling to other positions in the ceramic membrane tube 1 and affecting the extraction of dirt. The dirt removed by the backwashing of the flushing liquid can be extracted to the outside through the sewage extraction pipe 12 and the telescopic outlet pipe 18.

[0025] Through the above process, the ceramic membrane tube 1 and the corresponding position of the liquid collecting shell 13 can be backwashed and decontaminated, and then the support frame 9 can be driven to move up and down by the expansion and contraction of the expansion joint 8 (the expansion and contraction inlet pipe 15 and the expansion and contraction outlet pipe 18 can be correspondingly expanded and contracted with the movement of the support frame 9), and the liquid collecting shell 13 and the dirt blocking member can be driven to move up and down along the ceramic membrane tube 1 (the sewage extraction pipe 12 is made of a material with supporting capacity, and the movement of the dirt blocking member is driven by the sewage extraction pipe 12), thereby achieving comprehensive decontamination of the ceramic membrane tube 1. The decontamination process can continue to work while the ceramic membrane tube 1 is filtering, ensuring the stable filtration performance of the ceramic membrane tube 1, without stopping the machine to flush or replace the ceramic membrane, ensuring the stable efficiency of continuous treatment of industrial wastewater.

[0026] like Figure 1 As shown, a three-way valve 19 is provided outside the packaging shell 3; one port of the three-way valve 19 is connected to the upper end of the telescopic inlet pipe 15, and the other two ports are respectively connected to the injection pipe 20 and the air pressure pipe 21. In addition to using the injection pipe 20 to inject flushing liquid into the telescopic inlet pipe 15, the three-way valve 19 can also inject compressed air (through an external air compressor) into the telescopic inlet pipe 15 through the air pressure pipe 21, and the dirt blocked on the ceramic membrane tube 1 is flushed down by the compressed air, and the double recoil of liquid and gas is used to improve the removal effect of dirt. The three-way valve 19 can be an electromagnetic three-way valve 19, so that the staff does not need to manually control it, reducing the workload.

[0027] like Figure 1 As shown, an ultrasonic transducer 22 is fixed to the outer wall of the packaging shell 3. The ultrasonic transducer 22 can transmit high-frequency vibration to the ceramic membrane tube 1 through the conduction of the packaging shell 3 and the liquid inside the packaging shell 3, thereby reducing the adhesion rate of dirt on the surface of the ceramic membrane tube 1 and helping to improve the working efficiency of the recoil sewage discharge assembly.

[0028] The surfaces of the blocking piece 16 and the connecting rod 17 are coated with a ceramic coating. The ceramic coating has a smooth surface and is not easy to adhere to pollutants, so that the dirt inside the dirt blocking part can be extracted more thoroughly.

[0029] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A sewage treatment ceramic membrane anti-fouling device, comprising a ceramic membrane tube (1), characterized in that: The ceramic membrane tube (1) is arranged vertically; the upper and lower ends of the ceramic membrane tube (1) are respectively and correspondingly sealed and fixed with a cover (2); the ceramic membrane tube (1) is covered with a packaging shell (3) on the outside; the ceramic membrane tube (1) is located at the lower side of the inside of the packaging shell (3); the cover (2) is fixed to the packaging shell (3) through a support (4); the lower end of the packaging shell (3) is fixedly connected to a drainage pipe (5); the cover (2) is respectively fixedly connected to a water inlet pipe (6); the water inlet pipe (6) is sealed and passes through the packaging shell (3) and is connected to a collecting pipe (7) arranged outside the packaging shell (3); a backwash sewage discharge component is arranged on the ceramic membrane tube (1); The recoil discharge assembly comprises a telescopic device (8) fixed at the upper end of the encapsulation shell (3); the telescopic end of the telescopic device (8) vertically extends downward into the encapsulation shell (3) and is fixed with a support frame (9); an extension rod (10), a recoil pipe (11) and a plurality of sewage extraction pipes (12) are respectively fixed vertically on the lower side of the support frame (9); an annular liquid collection shell (13) is fixed at the lower end of the extension rod (10); the liquid collection shell (13) is correspondingly slidably sleeved on the outside of the ceramic membrane tube (1); the liquid collection shell (13) 3) A flushing chamber (14) is provided between the interior and the outer wall of the ceramic tube; the lower end of the recoil pipe (11) is connected to the flushing chamber (14); the upper end of the recoil pipe (11) is fixedly connected to a telescopic introduction pipe (15); the upper end of the telescopic introduction pipe (15) is sealed and penetrates the outer wall of the packaging shell (3); the plurality of sewage extraction pipes (12) are all slidably sealed and penetrate the upper cover (2), and extend one by one into the plurality of cavities of the ceramic membrane tube (1); each cavity of the ceramic membrane tube (1) is provided with a dirt blocking member; The dirt blocking member comprises two blocking sheets (16) one above and one below; the blocking sheets (16) slide in correspondence with the cavity of the ceramic membrane tube (1); the two corresponding blocking sheets (16) are connected via a connecting rod (17); the sewage extraction pipe (12) is fixed to the upper blocking sheet (16) one by one; the sewage extraction pipe (12) is sealed and penetrated between the two corresponding blocking sheets (16); the dirt blocking member is at a height corresponding to that of the liquid collecting shell (13); the upper ends of the sewage extraction pipes (12) are connected to the telescopic lead-out pipes (18) fixed on the support frame (9); the upper ends of the telescopic lead-out pipes (18) are sealed and penetrate the outer wall of the packaging shell (3).

2. The anti-fouling device for ceramic membrane for sewage treatment according to claim 1, characterized in that: A three-way valve (19) is arranged outside the packaging shell (3); one port of the three-way valve (19) is connected to the upper end of the telescopic introduction pipe (15), and the other two ports are respectively connected to the injection pipe (20) and the air pressure pipe (21).

3. The anti-fouling device for ceramic membrane for sewage treatment according to claim 1, characterized in that: An ultrasonic transducer (22) is fixed on the outer wall of the packaging shell (3).

4. The anti-fouling device for ceramic membrane for sewage treatment according to claim 1, characterized in that: The surfaces of the blocking plate (16) and the connecting rod (17) are both coated with ceramic coatings.

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