Filtering structure

Abstract

The utility model relates to the technical field of water treatment filtering media, in particular to a filtering structure which comprises a first supporting plate, a second supporting plate, a water collecting pipe and a connecting piece, a plurality of filtering assemblies are clamped between the first supporting plate and the second supporting plate, and the water collecting pipe penetrates through the first supporting plate, the filtering assemblies and the second supporting plate. The connecting piece is connected with the first supporting plate and the second supporting plate, the filtering assembly comprises a filtering unit of a soft structure, a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are fixed to the two sides of the filtering unit respectively, and the filtering unit is communicated with the water collecting pipe. The first fixing frame and the second fixing frame are clamped on the two side surfaces of the filter unit to support the filter unit, so that secondary reinforcement of the filter unit is ensured, and a further reinforcement and protection effect is achieved in the running process of the filter unit to ensure the filter effect of the filter unit. When the filter assembly is replaced, only the filter unit needs to be replaced, and the first fixing frame and the second fixing frame do not need to be replaced, so that the use cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment filter media, and more specifically, to a filter structure. Background Art

[0002] At present, the filter unit in the filter structure used for water treatment is mainly a soft film membrane structure, and the soft film membrane structure usually includes a 5-layer connected structure, which is respectively two filter layers, two non-woven fabrics that play a supporting role, and a guide net. In order to strengthen the strength of the soft film membrane structure, some soft film membrane structures include a 7-layer connected structure, which is respectively two filter layers, two non-woven fabrics, two guide nets, and a support plate. Whether it is a 5-layer soft film membrane structure or a 7-layer soft film membrane structure, during use, due to the large number of layers of the soft film membrane structure and the thickness of the soft film membrane is too thick, it will form resistance to filtration, thereby causing waste in anti-pollution ability and energy consumption. In addition, due to the excessive number of layers of the soft film membrane structure, when replacing the soft film membrane structure, it is necessary to replace the soft film membrane structure that is connected to form an integral whole together, so there is a problem of high replacement cost. However, when there is no supporting layer structure in the soft film membrane structure, there is a problem of difficulty in supporting and fixing the soft film membrane structure.

[0003] The Chinese patent application with announcement number: CN204699588U discloses an MBR flat membrane assembly with low operating energy consumption, which includes a collecting pipe, a first fixed plate, a second fixed plate, and a plurality of flat membrane units located between the two fixed plates, one end of the collecting pipe is connected to the first fixed plate, and the other end of the collecting pipe is connected to the second fixed plate after passing through each guide hole and the spacer sealing sheet in sequence, it also includes a plurality of fixing rods, and spacers are arranged between the first fixed plate and the flat membrane unit, between the second fixed plate and the flat membrane unit, and between adjacent flat membrane units, each spacer and each fixing rod are located at the lower part of the flat membrane unit, one end of the fixing rod is connected to the first fixed plate, and the other end of the fixing rod is connected to the second fixed plate after passing through each spacer and each flat membrane unit in sequence, and the first fixed plate and the adjacent spacer, the spacer and the adjacent flat membrane unit, and the second fixed plate and the adjacent spacer are all in close contact with each other.

[0004] In this technical solution, since the spacers and the fixing rods are located at the bottom of the flat membrane unit, the upper part of the flat membrane unit can swing slightly with the water vapor, and the flow rate between the flat membrane units changes with the swing of the flat membrane units, and an instantaneous flushing flow rate exceeding the average flow rate can be obtained, so that the flat membrane unit can be effectively cleaned under the bottom aeration volume. However, the upper part of the flat membrane unit has a certain stiffness, and the flat membrane unit in this technical solution is at least the above-mentioned structure of more than five layers, and the number of layers of the flat membrane unit cannot be reduced.

[0005] In the filtering structure, reducing the supporting layer structure of the soft film membrane to reduce costs, allowing the soft film membrane to form a filtering unit with a soft structure, and also fixing and supporting the filtering unit to ensure the filtering effect are still technical problems that need to be solved urgently. Utility Model Content

[0006] The utility model provides a filtering structure, which reduces the cost on the basis of reducing the supporting layer structure of the filtering unit, and also ensures the fixed support of the filtering unit and the filtering effect of the filtering unit.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a filtering structure, including a first support plate, a second support plate, a water collecting pipe and a connecting piece, a plurality of filtering components are clamped between the first support plate and the second support plate, the water collecting pipe passes through the first support plate, each of the filtering components and the second support plate, the connecting piece is respectively connected to the first support plate and the second support plate, the filtering component includes a filtering unit with a soft structure and a first fixed frame and a second fixed frame respectively fixed on both sides of the filtering unit, and the filtering unit is connected to the water collecting pipe.

[0008] In the present technical solution, the connector is connected to the first support plate and the second support plate, so that several filter components located between the first support plate and the second support plate can be clamped. The filter component includes a filter unit and a first fixed frame and a second fixed frame. Through the action of the first support plate, the second support plate and the connector, the filter unit can be fixed once. In addition, the filter unit is a soft structure, and its material is soft and has no supporting function. The first fixed frame and the second fixed frame are clamped on the two sides of the filter unit to support the filter unit, so as to ensure the secondary reinforcement of the filter unit, and play a further reinforcement and protection role during the operation of the filter unit to ensure the filtering effect of the filter unit. Since when replacing the filter component, only the filter unit needs to be replaced, and the first fixed frame and the second fixed frame that play a supporting role do not need to be replaced, the first fixed frame and the second fixed frame can be reused, which further saves the use cost.

[0009] Preferably, the filter unit comprises two filter membranes and a guide net, the edges of the two filter membranes are connected to form a containing space, the guide net is arranged in the containing space and is connected to the water collecting pipe.

[0010] Preferably, the first support plate and the second support plate are both provided with first mounting holes, and the connecting member is sequentially connected to each first mounting hole along the axial direction of the water collecting pipe.

[0011] Preferably, the first fixing frame, the filter membrane and the second fixing frame are provided with second mounting holes corresponding to the positions of the first mounting holes, and the connecting member is sequentially connected to the first mounting holes and the second mounting holes along the axial direction of the water collecting pipe.

[0012] Preferably, the filter membrane and the guide net are respectively provided with square holes, the water collecting pipe is installed in the square holes, and at least four water collecting holes are arranged on the water collecting pipe along its circumference at positions corresponding to the square holes of the guide net, and the positions of the water collecting holes respectively correspond to the four corners of the square holes on the guide net.

[0013] Preferably, a separation ring is provided at the place where the filter membrane is connected to the water collecting pipe, the separation ring is sleeved on the water collecting pipe, and both end surfaces of the separation ring are in contact with the filter membranes of two adjacent filter units respectively.

[0014] Preferably, the filtering structure further comprises at least two sealing rings, wherein the two sealing rings are respectively connected to the water collecting pipe and abut against the side surfaces of the first supporting plate and the second supporting plate away from the filtering unit.

[0015] Preferably, a plurality of the connecting members are provided, and the connecting members are bolt structures, and each of the bolt structures is installed at four corners of the first support plate, the second support plate and the filter assembly.

[0016] Preferably, the filter membrane is a membrane below 25 um.

[0017] Preferably, the guide net is made of PP or PET.

[0018] Compared with the prior art, the beneficial effect of the utility model is as follows: in the utility model, since the filter assembly includes a filter unit with a soft structure and a first fixed frame and a second fixed frame, the first fixed frame and the second fixed frame are clamped on the two sides of the filter unit to support the filter unit, thereby ensuring the secondary reinforcement of the filter unit, and playing a further reinforcement and protection role during the operation of the filter unit to ensure the filtering effect of the filter unit. When replacing the filter assembly, only the filter unit needs to be replaced, and the first fixed frame and the second fixed frame that play a supporting role do not need to be replaced, so that the first fixed frame and the second fixed frame can be reused, further saving the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of one of the viewing angles of the filter structure of the utility model;

[0020] Figure 2 It is an exploded view of the filter structure of the utility model from another perspective;

[0021] Figure 3It is a structural schematic diagram of the first fixed frame and the second fixed frame in Example 2 of the utility model.

[0022] In the accompanying drawings: 1. first support plate; 2. second support plate; 3. water collecting pipe; 4. connecting piece; 5. filter assembly; 51. filter unit; 52. first fixed frame; 53. second fixed frame; 511. filter membrane; 512. guide net; 6. first mounting hole; 7. second mounting hole; 521. boss; 8. third mounting hole; 9. separator ring; 10. sealing ring. DETAILED DESCRIPTION

[0023] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0026] Example 1

[0027] like Figure 1 , Figure 2 As shown, a filtering structure includes a first support plate 1, a second support plate 2, a water collecting pipe 3 and a connecting piece 4, a plurality of filtering components 5 are clamped between the first support plate 1 and the second support plate 2, the water collecting pipe 3 passes through the first support plate 1, each filtering component 5 and the second support plate 2, the connecting piece 4 is respectively connected to the first support plate 1 and the second support plate 2, the filtering component 5 includes a filtering unit 51 with a soft structure and a first fixed frame 52 and a second fixed frame 53 respectively fixed on both sides of the filtering unit 51, and the filtering unit 51 is connected to the water collecting pipe 3.

[0028] In this embodiment, the connector 4 is connected to the first support plate 1 and the second support plate 2, so that a plurality of filter assemblies 5 located between the first support plate 1 and the second support plate 2 can be clamped. The filter assembly 5 includes a filter unit 51 and a first fixed frame 52 and a second fixed frame 53. Through the first support plate 1, the second support plate 2 and the connector 4, the filter unit 51 can be fixed once. In addition, the first fixed frame 52 and the second fixed frame 53 are clamped on both sides of the filter unit 51 to support the filter unit 51, so that the secondary reinforcement of the filter unit 51 can be ensured, and the filter unit 51 is further reinforced and protected during the operation of the filter unit 51 to ensure the filtering effect of the filter unit 51. Since when replacing the filter assembly 5, only the filter unit 51 needs to be replaced, and the first fixed frame 52 and the second fixed frame 53 that play a supporting role do not need to be replaced, the first fixed frame 52 and the second fixed frame 53 can be reused, which further saves the use cost.

[0029] It should be noted that the structures of the first fixed frame 52 and the second fixed frame 53 can be the same. The first fixed frame 52 and the second fixed frame 53 are located on both sides of the filter unit 51. Since a number of filter components 5 are located between the first support plate 1 and the second support plate 2, they are connected to the first support plate 1 and the second support plate 2 through the connecting member 4, and then each filter component 5 is clamped between the first support plate 1 and the second support plate 2. Due to the transmission of force, the filter unit 51 is clamped by the first fixed frame 52 and the second fixed frame 53. It should also be pointed out that the water collecting pipe 3 passes through the first support plate 1, the first fixed frame 52, the filter unit 51, the second fixed frame 53, and the second support plate 2. External water is filtered through the filter unit 51, and then flows into the water collecting pipe 3 connected to the filter unit 51 to form water production, thereby completing the filtering function.

[0030] Among them, the filter unit 51 includes two filter membranes 511 and a guide net 512, the edges of the two filter membranes 511 are connected to form an accommodation space, the guide net 512 is arranged in the accommodation space and the guide net 512 is connected to the water collecting pipe 3. Since the filter unit 51 includes two filter membranes 511 and the guide net 512, the filter unit 51 is a soft structure, which has no support itself and needs to be supported by the first fixed frame 51 and the second fixed frame 52 on both sides. External water is filtered through the filter membrane 511, and then collected along the guide net 512 to the water collecting pipe 3 connected to the guide net 512 to form water production, thereby completing the filtering function. It should be noted that the water collecting pipe 3 passes through the filter membrane 511, but the water collecting pipe 3 is kept sealed at the connection with the filter membrane 511 to prevent water from leaking from the connection between the water collecting pipe 3 and the filter membrane 511, thereby affecting the filtering effect. The guide net 512 is located between the two filter membranes 511 . The edges of the two filter membranes 511 are bonded together by welding or other means, so that the guide net 512 is located in the accommodation space formed between the two filter membranes 511 .

[0031] In addition, first mounting holes 6 are provided on the first support plate 1 and the second support plate 2, and the connectors 4 are sequentially connected to the first mounting holes 6 along the axial direction of the water collecting pipe 3. In this embodiment, the connector 4 may be a connecting rod, which passes through the first mounting holes 6 and is then locked at both ends of the connecting rod by a locking nut and presses the first support plate 1 and the second support plate 2, so that the filter assembly 5 between the first support plate 1 and the second support plate 2 is fixed and clamped.

[0032] Among them, the first fixing frame 52, the filter membrane 511 and the second fixing frame 53 are provided with second mounting holes 7 corresponding to the positions of the first mounting holes 6, and the connecting member 4 is sequentially connected to the first mounting holes 6 and the second mounting holes 7 along the axial direction of the water collecting pipe 3. In this embodiment, the connecting member 4 can be a connecting rod, which passes through the first mounting hole 6 and the second mounting hole 7 in sequence along the axial direction, and then is locked at both ends of the connecting rod by a locking nut and presses the first support plate 1 and the second support plate 2, so that the filter assembly 5 located between the first support plate 1 and the second support plate 2 is fixed and clamped. It should be noted that the second mounting holes 7 opened on the filter membrane 511 are located at the four corners of the filter membrane 511, and the filter membrane 511 is installed on the connecting member 4, which can also further ensure the firmness of the installation position of the filter membrane 511.

[0033] In addition, the filter membrane 511 and the guide net 512 are respectively provided with square holes, the water collecting pipe 3 is installed in the square hole, and at least four water collecting holes are provided along the circumference of the water collecting pipe 3 corresponding to the square hole position of the guide net 512, and the position of each water collecting hole corresponds to the four corners of the square hole on the guide net 512. In this embodiment, the water collecting holes are evenly divided in four directions on the water collecting pipe 3, and the four water collecting holes just correspond to the four corners of the square hole. After the water passes through the filter membrane 511, it is collected by the guide net 512 and flows into the water collecting pipe 3 through the water collecting holes corresponding to the four corners of the square hole on the guide net 512.

[0034] Among them, the filter membrane 511 is provided with a separator ring 9 at the place where it is connected to the water collecting pipe 3, and the separator ring 9 is sleeved on the water collecting pipe 3, and the two end faces of the separator ring 9 are respectively in contact with the filter membranes 511 of the two adjacent filter units 51. In this embodiment, the separator ring 9 can separate the two filter units 51 of the two adjacent filter assemblies 5. In addition, the separator ring 9 is sleeved on the water collecting pipe 3, and the two end faces of the separator ring 9 are also in contact with the two adjacent filter units 51, which can play a sealing role to avoid water leakage at the connection between the water collecting pipe 3 and the outside of the filter unit 51. Specifically, the separator ring 9 contacts the filter membrane 511 and can prevent water leakage at the connection between the filter membrane 511 and the water collecting pipe 3.

[0035] It should also be pointed out that the guide net 512 is made of PP or PET. Since the filter unit 51 is a three-layer structure, a membrane below 25um is used, and two layers of filter membrane 511 wrap a layer of guide net 512, both of which are ultra-soft structures, so that the filter unit 51 has no supporting function. In the background technology, the flat membrane unit in the Chinese patent application with announcement number CN204699588U is actually a 5-layer structure, namely, filter membrane 511, supporting non-woven fabric, guide net 512, supporting non-woven fabric, and filter membrane 511, but the filter membrane 511 and the support can be integrated, and the non-woven fabric itself has a supporting structure.

[0036] Example 2

[0037] like Figure 3As shown, the difference between this embodiment 2 and embodiment 1 is that a boss 521 is provided on one side of the first fixed frame 52 facing the filter membrane 511 where it is located, and the filter unit 51 and the second fixed frame 53 are sequentially installed in the boss 521, and the second fixed frame 53 protrudes from or is flush with the first fixed frame 52 on the side away from the filter membrane 511. In this embodiment, the filter unit 51 is installed on the boss 521 and then fixed by the second fixed frame 53, which can also ensure the stability of the installation position of the filter unit 51. It should be noted that when the second fixed frame 53 presses the filter unit 51 on the boss 521, the side of the second fixed frame 53 away from the filter unit 51 can be flush with the first fixed frame 52 or partially protrude from the first fixed frame 52, so that the side of the second fixed frame 53 away from the filter unit 51 can be pressed by the adjacent first fixed frame 52, and then the filter unit 51 is pressed on the boss 521.

[0038] Among them, the first fixing frame 52 is provided with a third mounting hole 8 corresponding to the position of the first mounting hole 6, and the connecting member 4 is sequentially connected to each of the first mounting holes 6 and the third mounting hole 8 along the axial direction of the water collecting pipe 3. In this embodiment, in order to further ensure the stability and firmness of the installation position of the filter unit 51, the connecting member 4 is sequentially connected to each of the first mounting holes 6 and the third mounting hole 8 along the axial direction of the water collecting pipe 3 to press each filter assembly 5. It should be noted that the connecting member 4 can be a bolt structure, and the connection between the first support plate 1, the first fixing frame 52, the second fixing section 53 and the second support plate 2 is realized by the cooperation of the bolt structure and the nut. The filter unit 51 is fixed on the boss 521 by using the first fixing frame 52 and the second fixing section 53, and the fixed support of the filter unit 51 can be completed.

[0039] Example 3

[0040] like Figure 1 , Figure 2 As shown, the difference from implementations 1 and 2 is that the filtration structure further includes at least two sealing rings 10, which are respectively connected to the water collecting pipe 3 and abut against the side of the first support plate 1 and the second support plate 2 away from the filter unit 51. In this embodiment, the sealing ring 10 is connected to the water collecting pipe 3, so that the relative position between the water collecting pipe 3 and each filter component 5 can be guaranteed, and the position of the water collecting pipe 3 and each filter component 5 is prevented from being misaligned, thereby affecting the filtration effect. It should be noted that the sealing ring 10 can be a locking nut, and threads are provided at both ends of the water collecting pipe 3. By connecting the locking nut with the threads and making the locking nut abut against the first support plate 1 and the second support plate 2, the relative position between the water collecting pipe 3 and each filter component 5 can be fixed.

[0041] It should also be pointed out that one end of the water collecting pipe 3 can be closed, and the other end can be connected to a suction pump to provide power.

[0042] Among them, there are multiple connecting members 4, and the connecting members 4 are bolt structures, and each bolt structure is installed at the four corners of the first support plate 1, the second support plate 2 and the filter assembly 5 to connect the first support plate 1 and the second support plate 2 so as to press the filter assembly 5 located in the first support plate 1 and the second support 2. In this embodiment, by setting the bolt structure on the first support plate 1 and the second support plate 2, the effect of stable and fixed position of each filter assembly 5 in the filter structure can be achieved.

[0043] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A filtering structure, characterized in that: The invention comprises a first support plate (1), a second support plate (2), a water collecting pipe (3) and a connecting piece (4); a plurality of filter components (5) are sandwiched between the first support plate (1) and the second support plate (2); the water collecting pipe (3) passes through the first support plate (1), each of the filter components (5) and the second support plate (2); the connecting piece (4) is respectively connected to the first support plate (1) and the second support plate (2); the filter component (5) comprises a filter unit (51) of a soft structure and a first fixing frame (52) and a second fixing frame (53) respectively fixed on both sides of the filter unit (51); the filter unit (51) is connected to the water collecting pipe (3).

2. The filtering structure according to claim 1, characterized in that: The filter unit (51) comprises two filter membranes (511) and a guide net (512); the edges of the two filter membranes (511) are connected to form a receiving space; the guide net (512) is arranged in the receiving space and is connected to the water collecting pipe (3).

3. The filtering structure according to claim 2, characterized in that: The first support plate (1) and the second support plate (2) are both provided with first mounting holes (6), and the connecting member (4) is sequentially connected to each first mounting hole (6) along the axial direction of the water collecting pipe (3).

4. The filtering structure according to claim 3, characterized in that: The first fixing frame (52), the filter membrane (511) and the second fixing frame (53) are provided with second mounting holes (7) corresponding to the positions of the first mounting holes (6), and the connecting member (4) is sequentially connected to the first mounting holes (6) and the second mounting holes (7) along the axial direction of the water collecting pipe (3).

5. The filter structure according to any one of claims 2 to 4, characterized in that: The filter membrane (511) and the guide net (512) are respectively provided with square holes, the water collecting pipe (3) is installed in the square hole, and at least four water collecting holes are provided on the water collecting pipe (3) along its circumference at positions corresponding to the square holes of the guide net (512), and the positions of the water collecting holes respectively correspond to the four corners of the square holes on the guide net (512).

6. The filtering structure according to claim 5, characterized in that: The filter membrane (511) is provided with a separation ring (9) at the place where it is connected to the water collecting pipe (3); the separation ring (9) is sleeved on the water collecting pipe (3); and the two end surfaces of the separation ring (9) are respectively in contact with the filter membranes (511) of two adjacent filter units (51).

7. The filtering structure according to claim 1, characterized in that: The filtering structure further comprises at least two sealing rings (10), the two sealing rings (10) being respectively connected to the water collecting pipe (3) and abutting against the side surfaces of the first supporting plate (1) and the second supporting plate (2) away from the filtering unit (51).

8. The filtering structure according to claim 1, characterized in that: A plurality of the connecting members (4) are provided, and the connecting members (4) are bolt structures, each of which is installed at four corners of the first support plate (1), the second support plate (2), and the filter assembly (5).

9. The filtering structure according to claim 2, characterized in that: The filter membrane (511) is a membrane with a thickness of less than 25 um.

10. The filtering structure according to claim 2, characterized in that: The guide net (512) is made of PP or PET.

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