Cross-flow filtration module of ship membrane treatment equipment

Abstract

The utility model relates to the technical field of ship environment-friendly treatment, in particular to a cross-flow filtering module of ship membrane treatment equipment, which comprises a pipeline assembly, a circulating pump and a filtering assembly, the pipeline assembly comprises a water inlet pipe, a circulating pipe, a clear water header pipe and a sludge pipe, and the outlet of the water inlet pipe and the inlet of the sludge pipe are both communicated with the circulating pipe; a filter assembly is communicated between an outlet and an inlet of the circulating pump through a circulating pipe and comprises a shell and cylindrical filter membranes, the shell is provided with an inner cavity, a water inlet, a water outlet and a clear water outlet, one end of the clear water outlet extends to the inner cavity, the other end of the clear water outlet is communicated with a clear water main pipe, and each cylindrical filter membrane is provided with a circulating channel in the axis direction. The two ends of the circulation channel are communicated with the water inlet and the water outlet respectively, when fluid flows to the water outlet from the water inlet, the fluid flows through the circulation channel, sewage entering the barrel-shaped filter membrane continuously washes the surface of the inner wall of the barrel-shaped filter membrane, and the advantage that pollutant retention on the membrane surface is reduced is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of ship environmental protection treatment, and more specifically to a cross-flow filtration module of a ship membrane treatment equipment. Background Art

[0002] In order to reduce the negative impact of marine diesel engine exhaust gas on the atmospheric environment, existing diesel engine ships are mostly equipped with marine exhaust gas cleaning systems, which include a wastewater discharge unit including a silicon carbide membrane treatment device.

[0003] Patent document (CN117585763A) discloses a silicon carbide membrane wastewater treatment device, such as Figure 1 As shown, the system comprises a membrane tank 90, several flat membranes 91, and several water collection pipes 92. Sewage flows from the membrane tank 90 through a water production pump toward the flat membranes 91. Contaminants in the sewage are retained by the flat membranes 91 and remain outside the flat membranes 91. Clean water produced from this wastewater after the contaminants are retained passes through the flat membranes 91 and is discharged from the water collection pipes 92. The double-dash line represents the direction of water flow. It is readily apparent that during the filtration process, when contaminants adhere to the outside of the flat membranes 91, they prevent new sewage from passing through the membrane pores and entering the flat membranes 91, further affecting the production of clean water by the flat membranes 91. New contaminants further adhere to the flat membranes 91. After long-term use, the flat membranes 91 are prone to becoming heavily coated with contaminants, severely clogging the membrane pores and reducing the filtration flux of the flat membranes 91.

[0004] Therefore, there is a need to provide a cross-flow filtration module for a ship membrane treatment device that helps reduce the retention of pollutants on the membrane surface. Summary of the Invention

[0005] The main purpose of the present application is to provide a cross-flow filtration module for a ship membrane treatment device, wherein the cross-flow filtration module of the ship membrane treatment device includes a pipeline assembly, a circulation pump and a plurality of filter assemblies, the pipeline assembly includes a water inlet pipe, a plurality of circulation pipes, a clean water main pipe and a sludge pipe, the outlet of the water inlet pipe and the inlet of the sludge pipe are both connected to the circulation pipe, the outlet and inlet of the circulation pump are connected to a plurality of the filter assemblies through the circulation pipe, each of the filter assemblies includes a shell and a plurality of cylindrical filter membranes, the shell has an inner cavity, a plurality of water inlets, a water outlet and a clean water outlet, One end of the clean water outlet extends to the inner cavity, and the other end of the clean water outlet is connected to the clean water main pipe. Each of the cylindrical filter membranes has a plurality of flow channels for sewage to pass through in the axial direction, and the two ends of each of the flow channels are respectively connected to the corresponding water inlet and the water outlet. When the fluid flows from the water inlet to the water outlet, the fluid flows through the flow channel. Compared with the prior art, the sewage flow direction in this application is perpendicular to the clean water output direction, which has the advantage of cross-flow filtration. By allowing the sewage entering the cylindrical filter membrane to continuously flush the inner wall surface of the cylindrical filter membrane, it helps to reduce the retention of pollutants on the membrane surface.

[0006] Another object of the present application is to provide a cross-flow filtration module for a ship membrane treatment equipment, wherein the inner cavity is cylindrical or elliptical, the cylindrical filter membrane is arranged along the axial direction of the inner cavity, the shell has a water inlet and a water outlet, and the water inlet and the water outlet are respectively located at the two ends of the inner cavity and are connected to the inner cavity, the clean water outlet is arranged along the radial direction of the shell and is located between the water inlet and the water outlet, and by arranging the clean water main pipe, the water outlet on the shell, the water inlet and the cylindrical filter membrane in the shell in the above manner, cross-flow filtration in which the sewage flow direction is perpendicular to the clean water output direction is specifically realized.

[0007] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a cross-flow filtration module for a ship membrane treatment device, wherein the cross-flow filtration module for the ship membrane treatment device comprises:

[0008] a piping assembly, the piping assembly comprising a water inlet pipe, a plurality of circulation pipes, a clean water main pipe, and a sludge pipe, wherein the outlet of the water inlet pipe and the inlet of the sludge pipe are both connected to the circulation pipe; and

[0009] a circulation pump, wherein the outlet and the inlet of the circulation pump are connected to a plurality of the filter assemblies via the circulation pipe; and

[0010] Several filter components, each of which includes a shell and several cylindrical filter membranes, the shell having an inner cavity, several water inlets, water outlets and a clean water outlet, one end of the clean water outlet extending to the inner cavity, and the other end of the clean water outlet being connected to the clean water main pipe, each of the cylindrical filter membranes having several flow channels for sewage to pass through in the axial direction, and the two ends of each flow channel are respectively connected to the corresponding water inlet and the water outlet, when the fluid flows from the water inlet to the water outlet, the fluid flows through the flow channel.

[0011] In one or more embodiments of the present application, the inner cavity is cylindrical or elliptical, the cylindrical filter membrane is arranged along the axial direction of the inner cavity, the shell has a water inlet and a water outlet, and the water inlet and the water outlet are respectively located at the two ends of the inner cavity and connected to the inner cavity, and the clean water outlet is arranged along the radial direction of the shell and is located between the water inlet and the water outlet.

[0012] In one or more embodiments of the present application, the filter assembly also includes two pressure plates, which are respectively arranged at the two ends of the shell, and one pressure plate is located between the water inlet and the cylindrical filter membrane, and the other pressure plate is located between the water outlet and the cylindrical filter membrane. Each of the pressure plates has a plurality of diversion holes, and the diversion holes correspond one-to-one to the cylindrical filter membrane. One end of the diversion hole is connected to the flow channel on the corresponding cylindrical filter membrane, and the other end of the diversion hole is connected to the water inlet or the water outlet.

[0013] In one or more embodiments of the present application, the circulation pipe includes two end pipes and an intermediate pipe, the number of the filter components is two, the intermediate pipe is located between the two end pipes, and a filter component is provided between each end pipe and the intermediate pipe, and the two end pipes are respectively connected to the inlet and outlet of the circulation pump.

[0014] In one or more embodiments of the present application, the two end tubes are a straight tube and an L-shaped tube respectively, the middle tube is a U-shaped tube, and the U-shaped tube is located between the straight tube and the L-shaped tube.

[0015] In one or more embodiments of the present application, the pipeline assembly also includes two clean water pipes and a connecting pipe, the clean water pipes correspond one-to-one to the filter assembly, each of the shells is provided with two clean water outlets, the two clean water outlets are located between the two pressure plates, the two ends of each clean water pipe are respectively connected to the two clean water outlets on the corresponding shell, the two ends of the connecting pipe are respectively connected to the two clean water pipes, and one clean water pipe is connected to the clean water main pipe.

[0016] In one or more embodiments of the present application, one end of the water inlet pipe is connected to the straight pipe located at a lower position in the height direction.

[0017] In one or more embodiments of the present application, the inlet of the sludge pipe is connected to the intermediate pipe.

[0018] In one or more embodiments of the present application, the pipeline assembly further includes a valve, which is located on the clean water pipe between the connecting pipe and the clean water main pipe.

[0019] In an embodiment of the present application, a cross-flow filtration module of a ship membrane treatment equipment includes a pipeline assembly, a circulation pump and several filter assemblies. The pipeline assembly includes an inlet pipe, several circulation pipes, a clean water main pipe and a sludge pipe. The outlet of the water inlet pipe and the inlet of the sludge pipe are both connected to the circulation pipe. Several filter assemblies are connected between the outlet and the inlet of the circulation pump through the circulation pipe. Each filter assembly includes a shell and several cylindrical filter membranes. The shell has an inner cavity, several water inlets, water outlets and a clean water outlet. One end of the clean water outlet extends to the inner cavity, and the other end of the clean water outlet is connected to the clean water main pipe. Each cylindrical filter membrane has several flow channels for sewage to pass through in the axial direction, and the two ends of each flow channel are respectively connected to the corresponding water inlet and outlet. When the fluid flows from the water inlet to the water outlet, the fluid flows through the flow channel, and the flow direction of the sewage is perpendicular to the clean water output direction, thereby realizing cross-flow filtration. By allowing the sewage entering the cylindrical filter membrane to continuously flush the inner wall surface of the cylindrical filter membrane, it helps to reduce the retention of pollutants on the membrane surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a schematic diagram of the sewage permeation flow direction of a flat membrane of an existing silicon carbide membrane wastewater treatment device;

[0022] Figure 2 The figure shows a schematic structural diagram of a cross-flow filtration module of a ship membrane treatment device of the present invention;

[0023] Figure 3 The diagram shows a schematic diagram of the sewage infiltration flow direction of the utility model. DETAILED DESCRIPTION

[0024] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0025] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0026] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0028] Schematic diagram of a cross-flow filtration module for a marine membrane treatment plant, see Figures 2 to 3 According to a preferred embodiment of the present invention, a cross-flow filtration module of a ship membrane treatment device includes a pipeline component 10, a circulation pump 20 and a plurality of filter components 30.

[0029] Specifically, if Figure 2 As shown, the pipeline assembly 10 includes a water inlet pipe 101, a plurality of circulation pipes 102, a clean water main pipe 103 and a sludge pipe 106. The outlet of the water inlet pipe 101 and the inlet of the sludge pipe 106 are both connected to the circulation pipe 102; the outlet and inlet of the circulation pump 20 are connected to a plurality of the filter assemblies 30 through the circulation pipe 102; Figure 3Each of the filter components 30 includes a shell 301 and several cylindrical filter membranes 302. The shell 301 has an inner cavity 3011, several water inlets 3012, a water outlet 3013 and a clean water outlet 3014. One end of the clean water outlet 3014 extends to the inner cavity 3011, and the other end of the clean water outlet 3014 is connected to the clean water main pipe 103. Each of the cylindrical filter membranes 302 has several circulation channels (not marked in the figure) for sewage to pass through in the axial direction, and the two ends of each circulation channel are respectively connected to the corresponding water inlet 3012 and the water outlet 3013. When the fluid flows from the water inlet 3012 to the water outlet 3013, the fluid flows through the circulation channel.

[0030] More specifically, in the embodiment of the present application, the inner cavity 3011 is cylindrical or elliptical, the cylindrical filter membrane 302 is arranged along the axial direction of the inner cavity 3011, the shell 301 has a water inlet 3012 and a water outlet 3013, and the water inlet 3012 and the water outlet 3013 are respectively located at the two ends of the inner cavity 3011 and are connected to the inner cavity 3011, and the clean water outlet 3014 is arranged along the radial direction of the shell 301 and is located between the water inlet 3012 and the water outlet 3013.

[0031] It should be noted that the sewage flows into the circulation pipe 102 from the water inlet pipe 101, and the sewage flowing into the circulation pipe 102 flows in the pipe through the circulation pump 20 and flows through each of the cylindrical filter membranes 302 in the housing 301. When the circulation pipe 102 is filled with sewage, as sewage is further injected into the circulation pipe 102, the sewage is discharged. Figure 3As shown in the double-dash arrow in the figure, the sewage flowing into the cylindrical filter membrane 302 is subjected to pressure and exerts an outward seepage force along the radial direction of the cylindrical filter membrane 302. At this time, the pollutants in the sewage are blocked by the cylindrical filter membrane 302, while the sewage passing through the cylindrical filter membrane 302 is easily converted into clean water and discharged to the external clean water tank along the clean water main pipe 103. It should be emphasized that when pollutants are retained on the cylindrical filter membrane 302, since sewage is continuously injected into the circulation pipe 102 and circulates within the cylindrical filter membrane 302, it can be considered that the pollutants adhering to the cylindrical filter membrane 302 are constantly subjected to the shear force from the influx of sewage on the membrane surface, and the pollutants are easily separated from the cylindrical filter membrane 302 and washed away along the flow direction of the sewage. It is obvious that compared with the prior art in which sewage flows or further presses pollutants onto the filter membrane, the embodiment of the present application arranges the clean water main pipe, the water outlet 3013 on the shell, the water inlet 3012 and the cylindrical filter membrane in the shell in the above-mentioned manner, thereby specifically realizing cross-flow filtration in which the sewage flow direction is perpendicular to the clean water output direction, which has the advantage of helping to reduce the retention of pollutants on the membrane surface; in addition, the provision of the sewage pipe 106 provides conditions for discharging pollutants in the circulation pipe 102.

[0032] Furthermore, in order to ensure that the sewage flowing in from the water inlet 3012 only flows into the flow channel of the cylindrical filter membrane 302, as shown in FIG. Figure 3 As shown, the filter assembly also includes two pressure plates 40, which are respectively arranged at both ends of the shell 301 and fixedly connected to the shell 301, and the fixed connection method includes but is not limited to bolt connection, and one pressure plate 40 is located between the water inlet 3012 and the cylindrical filter membrane 302, and the other pressure plate 40 is located between the water outlet 3013 and the cylindrical filter membrane 302, each of the pressure plates 40 has a plurality of diversion holes 401, and the diversion holes 401 correspond one-to-one to the cylindrical filter membrane 302, one end of the diversion hole 401 is connected to the corresponding flow channel on the cylindrical filter membrane 302, and the other end of the diversion hole 401 is connected to the water inlet 3012 or the water outlet 3013.

[0033] Furthermore, in order to realize that the outlet and the inlet of the circulation pump 20 are connected through the circulation pipe 102, the filter assembly 30 is provided. Figure 2 As shown, the circulation pipe 102 includes two end pipes 1021 and an intermediate pipe 1022, the number of the filter components 30 is two, the intermediate pipe 1022 is located between the two end pipes 1021, and a filter component 30 is provided between each end pipe 1021 and the intermediate pipe 1022, and the two end pipes 1021 are respectively connected to the inlet and outlet of the circulation pump 20.

[0034] More specifically, in the embodiments of the present application, Figure 2 As shown, the two end pipes 1021 are a straight pipe and an L-shaped pipe respectively, and the middle pipe 1022 is a U-shaped pipe. The U-shaped pipe is located between the straight pipe and the L-shaped pipe, so that the circulation pipe 102 is waist-shaped as a whole.

[0035] Furthermore, in the embodiment of the present application, in order to achieve the communication between the clean water outlet 3013 and the clean water main pipe 103, as shown in FIG. Figure 2 As shown, the pipeline assembly 10 also includes two clean water pipes 104 and a connecting pipe 105. The clean water pipes 104 correspond one-to-one to the filter assembly 30. Each shell 301 is provided with two water outlets 3013 and clean water outlets 3014. The two ends of each clean water pipe 104 are respectively connected to the two water outlets 3013 and clean water outlets 3014 of the corresponding shell 301. The two ends of the connecting pipe 105 are respectively connected to the two clean water pipes 104, and the clean water pipe 104 located at a lower position in the height direction is connected to the clean water main pipe 103.

[0036] Furthermore, in the embodiment of the present application, one end of the water inlet pipe 101 is connected to a straight pipe located at a lower height. It should be noted that the end of the water inlet pipe 101 facing away from the straight pipe is connected to an external pre-filter. That is, the coarsely filtered sewage flows from the external pre-filter along the water inlet pipe 101 into the straight pipe, and is powered by the circulation pump 20.

[0037] Further, if Figure 2 As shown, in the embodiment of the present application, the inlet of the sludge pipe 106 is connected to the intermediate pipe 1022. It should be noted that the end of the sludge pipe 106 away from the intermediate pipe 1022 is connected to the external sludge bin.

[0038] Further, if Figure 2 As shown, the pipeline assembly 10 further includes a valve 107, which is located on the clean water pipe 104 between the connecting pipe 105 and the clean water main pipe 103. It should be noted that the clean water main pipe 103 is located at the other end of the clean water pipe 104 provided with the valve 107, and the clean water main pipe 103 is located between the two water outlets 3013 and clean water outlets 3014 of the clean water pipe 104. When the valve 107 blocks the clean water pipe 104, the filtered clean water only flows out from the water outlet 3013 and clean water outlet 3014 corresponding to the end of the clean water pipe 104 away from the valve 107.

[0039] In summary, the cross-flow filtration module of the ship membrane treatment equipment based on the embodiment of the present application is explained, which is the cross-flow filtration module of the ship membrane treatment equipment to achieve cross-flow filtration, which helps to reduce the retention of pollutants on the membrane surface and other advantages.

[0040] It's worth noting that the cross-flow filtration module of the marine membrane treatment system described in the embodiments of this application has a simple structure, eliminating complex manufacturing processes and expensive materials, and thus offering high economic efficiency. Furthermore, for manufacturers, the cross-flow filtration module of the marine membrane treatment system provided in this application is easy to produce and inexpensive, which helps control production costs and further facilitates product promotion and adoption.

[0041] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.

Claims

1. A cross-flow filtration module for a marine membrane treatment device, characterized in that: The cross-flow filtration module of the ship membrane treatment equipment includes a piping assembly, the piping assembly comprising a water inlet pipe, a plurality of circulation pipes, a clean water main pipe, and a sludge pipe, wherein the outlet of the water inlet pipe and the inlet of the sludge pipe are both connected to the circulation pipe; and a circulation pump, wherein the outlet and the inlet of the circulation pump are connected to a plurality of filter assemblies via the circulation pipe; and Several filter components, each of which includes a shell and several cylindrical filter membranes, the shell having an inner cavity, several water inlets, water outlets and a clean water outlet, one end of the clean water outlet extending to the inner cavity, and the other end of the clean water outlet being connected to the clean water main pipe, each of the cylindrical filter membranes having several flow channels for sewage to pass through in the axial direction, and the two ends of each flow channel are respectively connected to the corresponding water inlet and the water outlet, when the fluid flows from the water inlet to the water outlet, the fluid flows through the flow channel.

2. The cross-flow filtration module of the marine membrane treatment equipment according to claim 1, characterized in that: The inner cavity is cylindrical or elliptical, the cylindrical filter membrane is arranged along the axial direction of the inner cavity, the shell has a water inlet and a water outlet, and the water inlet and the water outlet are respectively located at the two ends of the inner cavity and are connected to the inner cavity, and the clean water outlet is arranged along the radial direction of the shell and is located between the water inlet and the water outlet.

3. The cross-flow filtration module of the marine membrane treatment equipment according to claim 2, characterized in that: The filter assembly also includes two pressure plates, which are respectively arranged at both ends of the shell, and one pressure plate is located between the water inlet and the cylindrical filter membrane, and the other pressure plate is located between the water outlet and the cylindrical filter membrane. Each of the pressure plates has a plurality of diversion holes, and the diversion holes correspond one-to-one to the cylindrical filter membrane. One end of the diversion hole is connected to the flow channel on the corresponding cylindrical filter membrane, and the other end of the diversion hole is connected to the water inlet or the water outlet.

4. The cross-flow filtration module of the marine membrane treatment equipment according to any one of claims 1 to 3, characterized in that: The circulation pipe includes two end pipes and an intermediate pipe. There are two filter components. The intermediate pipe is located between the two end pipes, and a filter component is provided between each end pipe and the intermediate pipe. The two end pipes are respectively connected to the inlet and outlet of the circulation pump.

5. The cross-flow filtration module of the marine membrane treatment equipment according to claim 4, characterized in that: The two end tubes are respectively a straight tube and an L-shaped tube, and the middle tube is a U-shaped tube, and the U-shaped tube is located between the straight tube and the L-shaped tube.

6. The cross-flow filtration module of the marine membrane treatment equipment according to claim 3, characterized in that: The pipeline assembly also includes two clean water pipes and a connecting pipe. The clean water pipes correspond one-to-one to the filter assembly. Each shell is provided with two clean water outlets. The two clean water outlets are located between the two pressure plates. The two ends of each clean water pipe are respectively connected to the two clean water outlets on the corresponding shell. The two ends of the connecting pipe are respectively connected to the two clean water pipes, and one clean water pipe is connected to the clean water main pipe.

7. The cross-flow filtration module of the marine membrane treatment equipment according to claim 5, characterized in that: One end of the water inlet pipe is communicated with the straight pipe located at a lower position in the height direction.

8. The cross-flow filtration module of the marine membrane treatment equipment according to claim 4, characterized in that: The inlet of the sludge pipe is communicated with the intermediate pipe.

9. The cross-flow filtration module of the marine membrane treatment equipment according to claim 6, characterized in that: The pipeline assembly also includes a valve, which is located on the clean water pipe between the connecting pipe and the clean water main pipe.

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