Cross-flow membrane filtration device

Abstract

The application discloses a cross-flow membrane filtering device and relates to the technical field of water purification. The application comprises a filtering flow guide box body, a sealing upper cover, and a plurality of stacked membrane filtering assemblies. The plurality of membrane filtering assemblies are installed in the filtering flow guide box body and the sealing upper cover is arranged at the uppermost end and is fixed by a plurality of screw rods. The two side walls of the membrane filtering assembly in the length direction are attached to the inner wall of the filtering flow guide box body in the length direction. Each of the two adjacent membrane filtering assemblies is provided with a first rubber sealing ring. A first rubber sealing ring is arranged between the bottom of the filtering flow guide box body and the lowermost membrane filtering assembly. A first rubber sealing ring is arranged between the sealing upper cover and the uppermost membrane filtering assembly. A second rubber sealing ring is arranged between the sealing upper cover, the uppermost membrane filtering assembly and the upper end of the filtering flow guide box body. The filtering flow guide box body, the sealing upper cover and the membrane filtering assembly are combined and installed conveniently. The overall structure for membrane filtering is in the form of stacking of the plurality of membrane filtering assemblies, and the cost of single replacement and maintenance is low.

Description

Technical Field

[0001] This invention belongs to the field of water purification technology, and in particular relates to a cross-flow membrane filtration device. Background Technology

[0002] Cross-flow flat plate filters are suitable for the treatment and purification of various wastewaters, relying on fluid scouring of the membrane surface to reduce membrane fouling. Compared with tubular filters, cross-flow filters have a smaller footprint, lower energy consumption, and are easier to use. Existing cross-flow membrane filtration devices generally use sealed cylindrical tubes with integral membrane filtration components, resulting in high maintenance costs due to disassembly and replacement. To address the above technical problems, this application provides a cross-flow membrane filtration device. Summary of the Invention

[0003] The purpose of this invention is to provide a cross-flow membrane filtration device, which is easy to install by combining the filter guide box, sealing cover and membrane filtration components. The structure is reasonable and simple. The overall structure for membrane filtration is a stacked arrangement of multiple membrane filtration components, resulting in low cost for individual component replacement and maintenance.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] This invention relates to a cross-flow membrane filtration device, comprising a filter guide box, a sealing top cover, and a plurality of stacked membrane filter components; the plurality of membrane filter components are installed in the filter guide box, with the sealing top cover positioned at the uppermost end and connected and fixed by a plurality of screws; the two side walls along the length direction of each membrane filter component are fitted to the inner wall along the length direction of the filter guide box; each pair of adjacent membrane filter components is provided with a first rubber sealing ring; a first rubber sealing ring is provided between the bottom of the filter guide box and the lowermost membrane filter component; a first rubber sealing ring is provided between the sealing top cover and the uppermost membrane filter component; a second rubber sealing ring is provided between the sealing top cover, the uppermost membrane filter component, and the upper end of the filter guide box.

[0006] In a preferred embodiment of the present invention, one end of the membrane filtration assembly forms an inlet collection chamber with the filter guide box; and an inlet pipe communicating with the inlet collection chamber is fixed on the side wall of the filter guide box; the other end of the membrane filtration assembly forms a reflux collection chamber with the filter guide box, and a reflux pipe communicating with the reflux collection chamber is fixed on the side wall of the filter guide box; a filtrate collection tank is provided at the center of the bottom of the filter guide box; and a filtrate output pipe is fixedly connected to the side wall of the filtrate collection tank.

[0007] As a preferred embodiment of the present invention, a first annular groove is provided at the bottom of the filter guide box to cooperate with the first rubber sealing ring; a plurality of threaded blind holes are provided at the bottom of the filter guide box to cooperate with the screw; two pairs of rectangular uprights for limiting the end of the membrane filter assembly are fixed to the side walls and bottom surface of the two ends of the filter guide box; a rectangular sealing plate is fixed between the upper end of the pair of rectangular uprights at the same end and the inner wall of the filter guide box.

[0008] As a preferred embodiment of the present invention, a first drain pipe is fixedly installed at the bottom of the filter guide box below the liquid inlet collection chamber; a second drain pipe is fixedly installed at the bottom of the filter guide box below the return liquid collection chamber; a guide groove communicating with the first drain pipe and the second drain pipe is opened at both ends of the bottom of the filter guide box; a ball valve is installed on both the first drain pipe and the second drain pipe.

[0009] As a preferred embodiment of the present invention, a fixed support leg is fixed at each of the four corners of the lower end of the filter guide box, and the fixed support leg has an L-shaped structure.

[0010] As a preferred embodiment of the present invention, the upper surface of the sealing cover is provided with a plurality of stepped through holes that cooperate with the screw; the lower surface of the sealing cover is provided with a second annular groove that cooperates with the first rubber sealing ring.

[0011] As a preferred embodiment of the present invention, the membrane filtration assembly includes a rectangular frame and a plurality of filter membrane tubes; the plurality of filter membrane tubes pass through both ends of the rectangular frame in a single row and are connected into a whole by injection of connecting colloid.

[0012] As a preferred embodiment of the present invention, the rectangular frame has several through holes that mate with the screw; the upper and lower surfaces of the rectangular frame have symmetrically formed third annular grooves that mate with the first rubber sealing ring; the two ends of the rectangular frame along its length have several mounting holes that mate with the filter membrane tube, and the mounting holes are connected through a rectangular elongated hole; and the outer wall ends of the two ends of the rectangular frame along its length are each provided with a rectangular protrusion.

[0013] As a preferred embodiment of the present invention, the connecting colloid is wrapped around the outer wall of several filter membrane tubes and disposed between two rectangular protrusions and inside the rectangular elongated hole.

[0014] The present invention has the following beneficial effects:

[0015] This invention features a convenient combination and installation of a filter guide box, a sealed top cover, and a membrane filtration assembly. The structure is reasonable and simple. The overall structure for membrane filtration is a stacked arrangement of multiple membrane filtration assemblies, resulting in low cost for individual replacement and maintenance.

[0016] The combination of the filter guide box, the sealed top cover and the membrane filter assembly of this invention can effectively reduce membrane fouling, reduce cleaning frequency and make cleaning convenient.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a cross-flow membrane filtration device according to the present invention.

[0020] Figure 2 This is the left view of the present invention.

[0021] Figure 3 This is the right view of the present invention.

[0022] Figure 4 This is a top view of the present invention.

[0023] Figure 5 for Figure 4 Sectional view at point AA.

[0024] Figure 6 for Figure 4 Sectional view at point BB.

[0025] Figure 7 for Figure 5 A magnified view of a portion of point A in the middle.

[0026] Figure 8 This is a schematic diagram of the filter guide box.

[0027] Figure 9 for Figure 8 A magnified view of a section at point B.

[0028] Figure 10 This is a schematic diagram of the structure of the sealed top cover.

[0029] Figure 11 This is a schematic diagram of the membrane filtration assembly.

[0030] Figure 12 This is a schematic diagram of a rectangular frame.

[0031] Figure 13This is a schematic diagram of the second rubber sealing ring.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1-Filter guide box, 2-Sealed top cover, 3-Membrane filter assembly, 4-First rubber sealing ring, 5-Second rubber sealing ring, 6-Inlet collection chamber, 7-Return liquid collection chamber, 11-Inlet pipe, 12-Return pipe, 13-Filtrate collection tank, 14-Filtrate output pipe, 15-First annular groove, 16-Rectangular upright, 17-Rectangular sealing plate, 18-First drain pipe, 19-Second drain pipe, 110-Guide groove, 111-Fixed support leg, 31-Rectangular frame, 32-Filter membrane tube, 33-Connecting colloid, 311-Third annular groove, 312-Mounting round hole, 313-Rectangular elongated hole, 314-Rectangular protrusion. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Specific Implementation Example 1: Please refer to... Figure 1-13 As shown, the present invention is a cross-flow membrane filtration device, including a filter guide box 1, a sealing cover 2, and a plurality of stacked membrane filter components 3; the plurality of membrane filter components 3 are installed in the filter guide box 1 and the sealing cover 2 is located at the uppermost end, and are connected and fixed by a plurality of screws; the two side walls of the membrane filter components 3 in the length direction are in contact with the inner wall of the filter guide box 1 in the length direction; each of two adjacent membrane filter components 3 is provided with a first rubber sealing ring 4; a first rubber sealing ring 4 is provided between the bottom of the filter guide box 1 and the lowermost membrane filter component 3; a first rubber sealing ring 4 is provided between the sealing cover 2 and the uppermost membrane filter component 3; a second rubber sealing ring 5 is provided between the sealing cover 2, the uppermost membrane filter component 3 and the upper end of the filter guide box 1. One end of the membrane filter assembly 3 forms an inlet collection chamber 6 with the filter guide box 1; and an inlet pipe 11 connected to the inlet collection chamber 6 is fixed on the side wall of the filter guide box 1; the other end of the membrane filter assembly 3 forms a return liquid collection chamber 7 with the filter guide box 1; and a return liquid pipe 12 connected to the return liquid collection chamber 7 is fixed on the side wall of the filter guide box 1; a filtrate collection tank 13 is provided at the center of the bottom of the filter guide box 1; and a filtrate output pipe 14 is fixedly connected to the side wall of the filtrate collection tank 13.

[0036] like Figure 4-9As shown, the bottom of the filter guide box 1 has a first annular groove 15 that mates with the first rubber sealing ring 4; the bottom of the filter guide box 1 has several threaded blind holes that mate with the screws; two pairs of rectangular uprights 16 for limiting the ends of the membrane filter assembly 3 are fixed to the side walls and bottom surface of the filter guide box 1 at both ends; a rectangular sealing plate 17 is fixed between the upper end of one pair of rectangular uprights 16 and the inner wall of the filter guide box 1. A first drain pipe 18 is fixed through the bottom of the filter guide box 1 below the inlet collection chamber 6; a second drain pipe 19 is fixed through the bottom of the filter guide box 1 below the return liquid collection chamber 7; a guide groove 110 communicating with the first drain pipe 18 and the second drain pipe 19 is opened at both ends of the bottom of the filter guide box 1; ball valves are installed on both the first drain pipe 18 and the second drain pipe 19. A fixed support leg 111 is fixed at each of the four corners of the lower end of the filter guide box 1, and the fixed support leg 111 has an L-shaped structure.

[0037] like Figure 10 As shown, the upper surface of the sealing cover 2 has several stepped through holes that cooperate with the screw; the lower surface of the sealing cover 2 has a second annular groove that cooperates with the first rubber sealing ring 4.

[0038] like Figure 11-12 As shown, the membrane filtration assembly 3 includes a rectangular frame 31 and several filter membrane tubes 32. The filter membrane tubes 32 pass through both ends of the rectangular frame 31 along its length in a single row and are connected by injecting a connecting colloid 33. Several through holes for mates with screws are formed on the rectangular frame 31. Third annular grooves 311 for mates with the first rubber sealing ring 4 are symmetrically formed on the upper and lower surfaces of the rectangular frame 31. Several mounting holes 312 for mates with the filter membrane tubes 32 are formed at both ends of the rectangular frame 31 along its length, and these mounting holes 312 are connected by a rectangular elongated hole 313. A rectangular protrusion 314 is provided at each end of the outer wall of both ends of the rectangular frame 31 along its length. The connecting colloid 33 is wrapped around the outer wall of the filter membrane tubes 32 and is disposed between two rectangular protrusions 314 and inside the rectangular elongated hole 313.

[0039] One specific application of this embodiment is:

[0040] The inlet pipe 11 is connected to the raw liquid tank via a high-pressure pump and pipeline, and a pressure gauge is installed on the pipeline. The high-pressure raw liquid enters the inlet collection chamber 6, and the raw liquid in the inlet collection chamber 6 flows evenly into the filter membrane tube 32 in the membrane filtration assembly 3. A portion of the raw liquid that passes through the filter membrane tube 32 is collected by gravity into the filtrate collection tank 13 below and then discharged through the filtrate output pipe 14. The unfiltered portion of the raw liquid that passes through the filter membrane tube 32 is collected into the return liquid collection chamber 7, the return pipe 12, and the delivery pipe and flows back into the raw liquid tank.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cross-flow membrane filtration device, characterized in that: The filter includes a filter guide box (1), a sealing cover (2), and several stacked membrane filter components (3); several membrane filter components (3) are installed inside the filter guide box (1) and the sealing cover (2) is located at the top and is fixed by several screws; the two side walls of the membrane filter components (3) in the length direction are attached to the inner wall of the filter guide box (1) in the length direction. Each of the two adjacent membrane filter components (3) is provided with a first rubber sealing ring (4); A first rubber sealing ring (4) is provided between the bottom of the filter guide box (1) and the membrane filter assembly (3) at the bottommost end. A first rubber sealing ring (4) is provided between the sealing cover (2) and the uppermost membrane filter assembly (3). A second rubber sealing ring (5) is provided between the sealing cover (2) and the uppermost membrane filter assembly (3) and the upper end of the filter guide box (1). One end of the membrane filter assembly (3) and the filter guide box (1) form an inlet collection cavity (6); and an inlet pipe (11) connected to the inlet collection cavity (6) is fixed on the side wall of the filter guide box (1). The other end of the membrane filter assembly (3) and the filter guide box (1) form a reflux liquid collection cavity (7), and a return liquid pipe (12) connected to the reflux liquid collection cavity (7) is fixed on the side wall of the filter guide box (1). The bottom center of the filter guide box (1) is provided with a filtrate collection tank (13); the side wall of the filtrate collection tank (13) is fixedly connected to a filtrate output pipe (14). The bottom of the filter guide box (1) is provided with a first annular groove (15) that cooperates with the first rubber sealing ring (4); the bottom of the filter guide box (1) is provided with several threaded blind holes that cooperate with the screw; two pairs of rectangular uprights (16) for limiting the end of the membrane filter assembly (3) are fixed to the side walls and bottom surface of the two ends of the filter guide box (1); a rectangular sealing plate (17) is fixed between the upper end of the pair of rectangular uprights (16) at the same end and the inner wall of the filter guide box (1). The filter guide box (1) has a fixed support leg (111) fixed at each of the four corners at the bottom, and the fixed support leg (111) is an L-shaped structure; The membrane filtration assembly (3) includes a rectangular frame (31) and a plurality of filter membrane tubes (32); the plurality of filter membrane tubes (32) are connected into one piece by passing through both ends of the rectangular frame (31) in a single row along the length direction and by injecting connecting colloid (33).

2. The cross-flow membrane filtration device according to claim 1, characterized in that, The bottom of the filter guide box (1) is located below the liquid inlet collection chamber (6) and a first drain pipe (18) is fixed through it. The bottom of the filter guide box (1) is located below the return liquid collection chamber (7) and a second drain pipe (19) is fixed through it. The bottom of the filter guide box (1) has a guide groove (110) at each end, which is connected to the first drain pipe (18) and the second drain pipe (19); ball valves are installed on both the first drain pipe (18) and the second drain pipe (19).

3. The cross-flow membrane filtration device according to claim 2, characterized in that, The upper surface of the sealing cover (2) has several stepped through holes that cooperate with the screw; the lower surface of the sealing cover (2) has a second annular groove that cooperates with the first rubber sealing ring (4).

4. A cross-flow membrane filtration device according to claim 3, characterized in that, The rectangular frame (31) has several through holes that mate with the screw; the upper and lower surfaces of the rectangular frame (31) have symmetrically formed third annular grooves (311) that mate with the first rubber sealing ring (4); the two ends of the rectangular frame (31) along the length direction have several mounting holes (312) that mate with the filter membrane tube (32), and the mounting holes (312) are connected by rectangular elongated holes (313); the outer walls of the two ends of the rectangular frame (31) along the length direction are respectively provided with a rectangular protrusion (314).

5. A cross-flow membrane filtration device according to claim 4, characterized in that, The connecting colloid (33) is wrapped around the outer wall of several of the filter membrane tubes (32) and disposed between the two rectangular protrusions (314) and inside the rectangular elongated hole (313).

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