Ceramic membrane filtration device cleaning structure

Abstract

The utility model discloses a cleaning structure of a ceramic membrane filter device in the field of industrial wastewater treatment technology. The tops of the first ceramic membrane filter and the second ceramic membrane filter are connected to a liquid storage tank through a three-way pipe. The top of the liquid storage tank is connected to a water outlet pipe through a second connecting pipe. The second connecting pipe is connected to the side end of the water outlet pipe. The two ends of the water outlet pipe are respectively connected to a filter outlet and a backwashing air inlet. The backwashing air inlet is connected to a high-pressure gas source. By setting a high-pressure gas backwashing structure, the ceramic membrane can be quickly cleaned. When cleaning, only the on-off of the pipeline needs to be processed. The structure is simple, the operation is convenient, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to a cleaning structure of a ceramic membrane filtering device. Background Art

[0002] Ceramic membrane filters are often used in industrial wastewater treatment equipment. The core component, inorganic ceramic membrane, has excellent thermal stability and pore stability. It is not only high in strength and resistant to chemical corrosion, but also has good cleaning and regeneration performance. It has the dual advantages of high-efficiency filtration and precision filtration.

[0003] In the process of industrial wastewater treatment, ceramic membranes are prone to clogging after being used for a long time, and the ceramic membranes need to be cleaned. If the ceramic membranes are removed for cleaning, the operation is cumbersome, and the existing ceramic membrane cleaning structure is complex, so a cleaning structure is needed to quickly clean the ceramic membranes. Utility Model Content

[0004] Based on this, it is necessary to provide a structure for cleaning the ceramic membrane filtration device by high-pressure gas in order to optimize the ceramic membrane cleaning structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cleaning structure of a ceramic membrane filtration device, comprising a pump, a first ceramic membrane filter and a second ceramic membrane filter arranged vertically in parallel, the tops of the first ceramic membrane filter and the second ceramic membrane filter are connected by a first connecting pipe, the bottom of the first ceramic membrane filter is connected to the liquid outlet of the pump, the liquid inlet of the pump is connected to the liquid inlet, the liquid inlet is connected to the bottom end of the second ceramic membrane filter through a third connecting pipe, the side end of the third connecting pipe is connected to a return pipe, the return pipe port is provided with a concentrated liquid return port, the concentrated liquid return port and the liquid inlet are respectively connected to the top and bottom of the industrial wastewater tank.

[0006] The top of the first ceramic membrane filter and the second ceramic membrane filter are connected to a liquid storage tank via a three-way pipe, and the top of the liquid storage tank is connected to a water outlet pipe via a second connecting pipe, and the second connecting pipe is connected to the side end of the water outlet pipe. Both ends of the water outlet pipe are respectively connected to a filtered water outlet and a backwash air inlet, and the backwash air inlet is connected to a high-pressure gas source.

[0007] The top of the first connecting pipe is provided with an openable and closable membrane exhaust port, and the bottoms of the first ceramic membrane filter and the second ceramic membrane filter are connected with an openable and closable drain port through a three-way pipe.

[0008] Close the filter water outlet, open the membrane exhaust port and drain port, inject high-pressure gas through the backwash air inlet, enter the liquid storage tank through the second connecting pipe, and enter the first ceramic membrane filter and the second ceramic membrane filter through the three-way pipe. The gas is discharged from the membrane exhaust port and the liquid is discharged from the drain port to achieve cleaning of the drain port and the membrane exhaust port.

[0009] In a preferred example, the utility model can be further configured as follows: the liquid storage tank is vertically arranged, and the three-way pipe is connected to the top of the liquid storage tank.

[0010] In a preferred example, the utility model can be further configured as follows: the filter water outlet, the concentrate return port, and the backwash air inlet port are all provided with pneumatic valves.

[0011] By adopting the above technical solution, it is convenient to open and close pipe intersections.

[0012] In summary, the present invention includes at least one of the following beneficial technical effects:

[0013] By setting up a high-pressure gas recoil structure, the ceramic membrane can be quickly cleaned. During cleaning, it is only necessary to handle the on-off of the pipeline. It has a simple structure, is easy to operate, and improves cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0016] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle.

[0017] In the attached figure:

[0018] 1. Liquid inlet; 2. Pump; 3. First ceramic membrane filter; 4. Second ceramic membrane filter; 5. Return pipe; 6. First connecting pipe; 7. Drain port; 8. Membrane exhaust port; 9. Liquid storage tank; 91. Tee pipe; 92. Second connecting pipe; 10. Water outlet pipe; 11. Filter water outlet; 12. Concentrate return port; 13. Third connecting pipe; 14. Backwash air inlet; 15. Pneumatic valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] exist Figure 1-2In the illustrated embodiment, the utility model provides a technical solution: a cleaning structure of a ceramic membrane filtration device, comprising a pump 2, a first ceramic membrane filter 3 and a second ceramic membrane filter 4 arranged vertically in parallel, the top ends of the first ceramic membrane filter 3 and the second ceramic membrane filter 4 are connected by a first connecting pipe 6, the bottom of the first ceramic membrane filter 3 is connected to the liquid outlet end of the pump 2, the liquid inlet end of the pump 2 is connected to the liquid inlet 1, the liquid inlet 1 is connected to the bottom end of the second ceramic membrane filter 4 through a third connecting pipe 13, the side end of the third connecting pipe 13 is connected to a return pipe 5, the end of the return pipe 5 is provided with a concentrated liquid return port 12, the concentrated liquid return port 12 and the liquid inlet 1 are respectively connected to the top and bottom of the industrial wastewater tank.

[0021] In actual applications, compared with the existing ceramic membrane filtration equipment, the top of the first ceramic membrane filter 3 and the second ceramic membrane filter 4 are connected to a liquid storage tank 9 through a three-way pipe 91. The liquid storage tank 9 is vertically arranged, and the three-way pipe 91 is connected to the top of the liquid storage tank 9. The top of the liquid storage tank 9 is connected to a water outlet pipe 10 through a second connecting pipe 92. The second connecting pipe 92 is connected to the side end of the water outlet pipe 10. The two ends of the water outlet pipe 10 are respectively connected to a filtered water outlet 11 and a backwash air inlet 14, and the backwash air inlet 14 is connected to a high-pressure gas generating device.

[0022] The top of the first connecting pipe 6 is provided with an openable and closable membrane exhaust port 8, and the bottoms of the first ceramic membrane filter 3 and the second ceramic membrane filter 4 are connected with an openable and closable drain port 7 through a three-way pipe.

[0023] The ports of the filtered water outlet 11, the concentrated liquid return outlet 12, and the backwash air inlet 14 are all provided with pneumatic valves 15 for opening and closing.

[0024] The specific working principle of the utility model will be described in detail below:

[0025] When the filtering device is in working state, the membrane exhaust port 8 and the drain port 7 are in a blocked state, the backwash air inlet 14 is blocked by the pneumatic valve 15, the filtered water outlet 11 and the concentrated liquid return port 12 are opened, and the wastewater enters the liquid inlet 1 at the bottom of the wastewater tank body. A part of the concentrated wastewater enters the return pipe 5 from the third connecting pipe 13 and flows back into the industrial wastewater tank body through the concentrated liquid return port 12, and the other part enters the pump 2 through the liquid inlet 1, enters the first ceramic membrane filter 3 for filtration, and then enters the second ceramic membrane filter 4 from the first connecting pipe 6 for filtration. Then the filtered concentrated liquid flows back into the industrial wastewater tank body from the return pipe 5, and the cycle is repeated to achieve the purification of industrial wastewater.

[0026] The water filtered by the first ceramic membrane filter 3 and the second ceramic membrane filter 4 enters the liquid storage tank 9 . After the liquid storage tank 9 is full, the water enters the water outlet pipe 10 through the second connecting pipe 92 and is then discharged from the filtered water outlet 11 .

[0027] When the first ceramic membrane filter 3 and the second ceramic membrane filter 4 need to be cleaned, the filtered water outlet 11 and the concentrated liquid return port 12 are closed through the pneumatic valve 15, the drain port 7 and the membrane exhaust port 8 are opened, and the backwash air inlet 14 is opened through the pneumatic valve 15. The high-pressure gas enters the liquid storage tank 9 from the second connecting pipe 92, and then enters the first ceramic membrane filter 3 and the second ceramic membrane filter 4 through the three-way pipe 91 to clean them. The residual particulate liquid is discharged from the drain port 7, and the gas is discharged from the membrane exhaust port 8 to complete the cleaning.

[0028] In summary, the cleaning structure of the ceramic membrane filtration device of the utility model has a simple cleaning structure and is easy to operate.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning structure of a ceramic membrane filtration device, comprising a pump (2), a first ceramic membrane filter (3) and a second ceramic membrane filter (4) arranged in parallel in a vertical shape, wherein the tops of the first ceramic membrane filter (3) and the second ceramic membrane filter (4) are connected via a first connecting pipe (6), the bottom of the first ceramic membrane filter (3) is connected to the liquid outlet of the pump (2), the liquid inlet of the pump (2) is connected to the liquid inlet (1), the liquid inlet (1) is connected to the bottom of the second ceramic membrane filter (4) via a third connecting pipe (13), the side end of the third connecting pipe (13) is connected to a return pipe (5), the end of the return pipe (5) is provided with a concentrated liquid return port (12), the concentrated liquid return port (12) and the liquid inlet (1) are respectively connected to the top and bottom of an industrial wastewater tank, characterized in that: The tops of the first ceramic membrane filter (3) and the second ceramic membrane filter (4) are connected to a liquid storage tank (9) via a three-way pipe (91); the tops of the liquid storage tank (9) are connected to a water outlet pipe (10) via a second connecting pipe (92); the second connecting pipe (92) is connected to the side end of the water outlet pipe (10); both ends of the water outlet pipe (10) are respectively connected to a filtered water outlet (11) and a backwashing air inlet (14); the backwashing air inlet (14) is connected to a high-pressure gas source; The top of the first connecting pipe (6) is provided with an openable and closable membrane exhaust port (8), and the bottoms of the first ceramic membrane filter (3) and the second ceramic membrane filter (4) are connected to an openable and closable drain port (7) via a three-way pipe.

2. The cleaning structure of the ceramic membrane filtration device according to claim 1, characterized in that: The liquid storage tank (9) is arranged vertically, and the three-way pipe (91) is connected to the top of the liquid storage tank (9).

3. The cleaning structure of the ceramic membrane filtration device according to claim 1, characterized in that: The ports of the filtered water outlet (11), the concentrated liquid return port (12), and the backwash air inlet (14) are all provided with pneumatic valves (15).

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