Box-type hollow fiber ultrafiltration membrane filtering equipment

Abstract

The utility model discloses box-type hollow fiber ultrafiltration membrane filtering equipment which comprises a box body fixed on a base, a frame is fixedly connected to an opening in the top of the box body, a cover plate is detachably connected to the frame in a sealed mode, a water inlet buffer partition plate and an installation partition plate are sequentially and fixedly connected to the inner wall of the box body from bottom to top, and a water outlet buffer partition plate is fixedly connected to the installation partition plate. A plurality of ultrafiltration membrane elements are mounted on the water inlet buffer partition plate and the mounting partition plate in a penetrating manner, and the bottom ends of the ultrafiltration membrane elements are water inlet ends; the utility model has the advantages of high integration level, compact and reasonable arrangement of ultrafiltration membrane elements, small number of pipe fittings, simplicity in operation and low investment cost, and effectively solves the problems of large occupied area, serious hydraulic loss, high pipeline fracture risk, non-uniform water distribution and air intake and the like of the traditional ultrafiltration equipment; the device has the advantages of being convenient to install and use, easy to operate and maintain and the like, runs stably and can be suitable for the fields of drinking water treatment, mine water treatment, industrial wastewater treatment, seawater desalination, reclaimed water reuse and the like.

Description

Technical Field

[0001] The utility model relates to an ultrafiltration membrane filtration device, in particular to a box-type hollow fiber ultrafiltration membrane filtration device. Background Technique

[0002] Hollow fiber filter membrane is a new membrane technology product formed by the intersection of functional fiber materials and separation membrane technology. It is an efficient filtration technology widely used in the field of water treatment. It utilizes the unique structure and characteristics of the hollow fiber membrane to effectively separate and remove tiny particles, suspended solids and macromolecular organic matter in water.

[0003] Most ultrafiltration membrane elements on the market are made by processing hollow fiber ultrafiltration membrane filaments, membrane shells, end caps, etc. The filter membrane is provided with a water inlet, a water outlet and a drain outlet. The ultrafiltration membrane device consists of multiple ultrafiltration membrane elements, and the water inlets, water outlets and drain outlets of each membrane element are connected together through pipelines and pipe fittings. However, the existing ultrafiltration membrane device is limited by the specifications of the ultrafiltration membrane elements, and a large number of pipe fittings and valves need to be equipped. The membrane elements are arranged loosely, the pipeline is complex, the water loss is serious, the electrical control is complex, the membrane elements are easy to be blocked, the cleaning is frequent, and the operation cost is high. Content of the Utility Model

[0004] The purpose of the utility model is to provide a box-type hollow fiber ultrafiltration membrane filtration device to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A box-type hollow fiber ultrafiltration membrane filtration device, including a box body fixed on a base, a frame is fixedly connected to the opening at the top of the box body, a cover plate is detachably and sealingly connected to the frame, the inner wall of the box body is fixedly connected with a water inlet buffer partition and an installation partition from bottom to top in sequence, a plurality of ultrafiltration membrane elements are installed through the water inlet buffer partition and the installation partition together, the bottom end of the ultrafiltration membrane element is the water inlet end, the top end of the ultrafiltration membrane element is the water outlet end, the ultrafiltration membrane element is detachably and sealingly connected to the installation partition, a plurality of water inlet channels are arranged through the water inlet buffer partition, at least one first drain outlet, a plurality of first water inlets, a plurality of second drain outlets, at least one backwash water inlet and a plurality of water outlets are arranged on the outer wall of the box body, and a gas washing mechanism is installed through the box body.

[0007] As a further scheme of the utility model: the first drain outlet and the first water inlet are both located below the water inlet buffer partition, the second drain outlets are all located above the water inlet buffer partition and close to the water inlet buffer partition, and the backwash water inlet and the water outlets are all located above the installation partition and close to the installation partition.

[0008] As a further solution of the utility model: a connecting flange is fixedly sleeved at the top end of the outer wall of the ultrafiltration membrane element, a sealing ring is arranged at the bottom of the connecting flange, the bottom surface of the sealing ring is attached to the top surface of the installation partition board, a plurality of screw rods are fixedly connected to the corresponding positions of the top of the installation partition board and each connecting flange, and the top end of the screw rod passes through the corresponding sealing ring and the connecting flange and is cooperatively connected with a nut.

[0009] As a further solution of the utility model: the air washing mechanism includes a main air inlet pipe penetrating through the box body at both ends, the main air inlet pipe is located at the inner bottom of the box body, a plurality of air supply branch pipes are communicated with the outer wall of the main air inlet pipe located inside the box body, a plurality of air outlet discs are communicated with the air supply branch pipes, a plurality of air outlet holes are formed in the top of the air outlet disc, an exhaust hole is arranged on the cover plate, and an exhaust valve is installed at the exhaust hole.

[0010] As a further solution of the utility model: there are a plurality of cover plates, and a plurality of the cover plates are detachably connected to the frame through bolts, and a sealing gasket is arranged between the frame and the cover plate.

[0011] As a further solution of the utility model: a plurality of support rods are fixedly penetrated through the water inlet buffer partition board and the installation partition board, the bottom end of the support rod is fixedly connected to the inner wall of the box body, and the top end of the support rod is fixedly connected to the bottom of the frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model has high integration degree, the ultrafiltration membrane elements are arranged compactly and reasonably, the number of pipe fittings is small, the operation is simple, the investment cost is low, and it effectively solves the problems of large floor area, serious hydraulic loss, high risk of pipeline rupture, uneven water distribution and air intake of traditional ultrafiltration equipment; it has the advantages of convenient installation and use, easy operation and maintenance, etc., and has stable operation, and can be applied to the fields of drinking water treatment, mine water treatment, industrial wastewater treatment, seawater desalination, reclaimed water reuse, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a box-type hollow fiber ultrafiltration membrane filtration device.

[0015] Figure 2 It is a left view of a box-type hollow fiber ultrafiltration membrane filtration device.

[0016] Figure 3 It is a right view of a box-type hollow fiber ultrafiltration membrane filtration device.

[0017] Figure 4 It is Figure 1 The enlarged view of part A in

[0018] Among them, there are a box body 1, a base 2, a frame 3, a cover plate 4, a lifting ring 5, an exhaust valve 6, a first drain port 7, a first water inlet 8, a second drain port 9, a backwash water inlet 10, a water outlet 11, a maintenance port 12, a transparent cover plate 13, a main air inlet pipe 14, an air supply branch pipe 15, an air outlet plate 16, an inlet buffer partition plate 17, an inlet channel 18, a mounting partition plate 19, an ultrafiltration membrane element 20, a connecting flange 21, a sealing ring 22, a screw 23, a nut 24, and a support rod 25. Specific embodiments

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation in the specification, and thus cannot be understood as a limitation to the present utility model.

[0022] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0023] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a box-type hollow fiber ultrafiltration membrane filtration device includes a box body 1 fixed on a base 2. The box body 1 is made of Q235A, SS304 or higher requirements of materials. When using Q235A material, the outside of the box body 1 is sprayed with paint for anti-corrosion, and the inside of the box body is treated with environment-friendly paint, fiberglass or plastic-lined rubber. And the box body 1 is a cuboid, and each folded edge of the box body 1 is rounded to prevent cleaning dead corners. A frame 3 is fixedly connected to the opening at the top of the box body 1, and a cover plate 4 is detachably and sealingly connected to the frame 3. The inner wall of the box body 1 is fixedly connected with an inlet buffer partition 17 and an installation partition 19 in sequence from bottom to top. The installation partition 19 divides the interior of the box body 1 into two areas. Among them, the area above the installation partition 19 is the water outlet area, and the area below the installation partition 19 is the water inlet area. A number of ultrafiltration membrane elements 20 are installed through the inlet buffer partition 17 and the installation partition 19 together. The ultrafiltration membrane elements 20 are selected from external pressure type hollow fiber ultrafiltration membrane filaments, and the materials are mainly PVDF, PS, PES, PVC, PP, etc. The bottom end and the outer peripheral wall of the ultrafiltration membrane element 20 are the water inlet sides, and the top end of the ultrafiltration membrane element 20 is the water outlet end. The ultrafiltration membrane element 20 is detachably and sealingly connected to the installation partition 19. A number of water inlet channels 18 are penetrated through the inlet buffer partition 17. At least one first drain port 7, a number of first water inlet ports 8, a number of second drain ports 9, at least one backwash water inlet port 10 and a number of water outlet ports 11 are opened on the outer wall of the box body 1. An air washing mechanism is installed through the box body 1.

[0024] Further, the first drain port 7 and the first water inlet port 8 are both located below the inlet buffer partition 17, the second drain ports 9 are all located above the inlet buffer partition 17 and close to the inlet buffer partition 17, and the backwash water inlet port 10 and the water outlet ports 11 are all located above the installation partition 19 and close to the installation partition 19.

[0025] By adopting the above scheme, in the installation of the present utility model, the first water inlet port 8 is connected to an external water inlet pipe through an automatic valve; the water outlet port 11 is connected to an external water outlet pipe through an automatic valve; at least one first drain port 7 and the second drain ports 9 are connected to a drain pipe through an automatic valve and a regulating valve; the backwash water inlet port 10 is connected to a backwash water inlet pipe through an automatic valve; the air inlet of the air washing mechanism is connected to an external air inlet pipe through an automatic valve. The inspection port 12 is provided with a transparent cover plate 13 to facilitate observing the internal situation of the box body 1; the remaining idle first drain port 7, second drain ports 9 and water outlet ports 11 are all closed with blind flanges for standby.

[0026] Equipment operation: Open the automatic valves of the first water inlet 8, the water outlet 11, the first drain 7 and the second drain 9, and close the automatic valves of the backwash water inlet 10 and the air washing mechanism. The water to be treated enters the internal water inlet area of the box body 1 from the first water inlet 8 through the water inlet pipeline, fills the internal water inlet area of the box body 1 through the water inlet channel 18 on the water inlet buffer partition 17. Slowly adjust the regulating valves of the first drain 7 and the second drain 9 to slowly increase the pressure of the water to be treated in the water inlet area. Under the action of the pressure, the water to be treated is pressed from the outer peripheral wall and the bottom water inlet side of the ultrafiltration membrane element 20 to the top water outlet end and discharged. The water to be treated and the qualified water after filtration are separated by the installation partition 19. The water produced by multiple ultrafiltration membrane elements 20 accumulates in the water outlet area of the box body 1 and is finally sent to the water outlet pipeline through the water outlet 11 of the box body 1. The impurities blocked by the ultrafiltration membrane element 20 follow a small amount of water in the water inlet area and are discharged into the drainage pipeline through the first drain 7 and the second drain 9.

[0027] Equipment backwashing: Open the automatic valves at the backwash water inlet 10, the first drain 7 and the second drain 9, and close the automatic valves of the first water inlet 8, the water outlet 11 and the air washing mechanism. The qualified water produced by the ultrafiltration membrane element 20 enters the water outlet area in the box body 1 from the backwash water inlet 10 through the backwash water inlet pipeline, enters the inside of the ultrafiltration membrane element 20 from the water outlet end of the ultrafiltration membrane element 20, and flushes the impurities remaining on the surface of the water inlet side 28 of the ultrafiltration membrane element 20. The sewage generated by the flushing flows into the drainage pipeline through the first drain 7 and the second drain 9.

[0028] Specifically combined with Figure 4 , in an embodiment of the present invention, a connecting flange 21 is fixedly sleeved on the top end of the outer wall of the ultrafiltration membrane element 20. A sealing ring 22 is arranged at the bottom of the connecting flange 21. The bottom surface of the sealing ring 22 is attached to the top surface of the installation partition 19. A plurality of screw rods 23 are fixedly connected to the corresponding positions of the top of the installation partition 19 and each connecting flange 21. The top end of the screw rod 23 passes through the corresponding sealing ring 22 and the connecting flange 21 and is cooperatively connected with a nut 24.

[0029] Through the cooperation of the connecting flange 21, the screw rod 23 and the nut 24, it is convenient to quickly disassemble and assemble each ultrafiltration membrane element 20 on the installation partition 19, thereby improving the overhaul and maintenance efficiency of the filtration equipment. And when a certain ultrafiltration membrane element 20 is damaged and there is a lack of replacement parts in the short term, after removing the ultrafiltration membrane element 20, installing a blind flange at the installation position of the ultrafiltration membrane element 20 can keep the filtration equipment running normally.

[0030] Specifically combined with Figure 1, in an embodiment of the present utility model, the air washing mechanism includes a main air inlet pipe 14 that penetrates through the box body 1 at both ends. The main air inlet pipe 14 is located at the inner bottom of the box body 1. A plurality of air supply branch pipes 15 are connected to the outer wall of the main air inlet pipe 14 inside the box body 1. A plurality of air outlet plates 16 are connected to the air supply branch pipes 15. A plurality of air outlet holes are formed at the top of the air outlet plate 16. An exhaust hole is provided on the cover plate 4, and an exhaust valve 6 is installed at the exhaust hole.

[0031] When one air inlet of the main air inlet pipe 14 is connected to an external air inlet pipe through an automatic valve and the other air inlet is blocked, when equipment air washing is required, the automatic valves at the first water inlet 8, air inlet, first drain outlet 7, and second drain outlet 9 are opened, and the automatic valves at the backwashing water inlet 10 and water outlet 11 are closed. The flushing water flows into the internal water inlet area of the box body 1 through the first water inlet 8 of the water inlet pipe. At the same time, the external air source rushes into the water inlet area of the box body 1 from the air inlet, main air inlet pipe 14, and air outlet plate 16. The air and water are mixed in the internal water inlet area of the box body 1, disturbing the outer wall of the water inlet side of the ultrafiltration membrane element 20, causing the residual impurities on the outer wall of the water inlet side of the ultrafiltration membrane element 20 to fall off and flow into the drain pipe through the first drain outlet 7 and the second drain outlet 9.

[0032] When equipment chemical cleaning is required, first perform the conventional backwashing and air washing operations of the equipment; then open the automatic valves at the first water inlet 8, water outlet 11, first drain outlet 7, and second drain outlet 9, and close the automatic valves at the backwashing water inlet 10 and air inlet. The prepared cleaning agent flows into the inside of the box body 1 through the first water inlet 8 and flows back to the cleaning agent tank from the water outlet 11, first drain outlet 7, and second drain outlet 9 for circulating cleaning. After the cleaning is completed, the equipment needs to be subjected to the conventional backwashing and air washing operations again until the pH values of the water discharged from the first drain outlet 7, drain outlet 8b, and water outlet 11 of the filtration equipment reach the specified requirements.

[0033] Specifically combined with Figure 1 , in an embodiment of the present utility model, there are multiple cover plates 4, and the multiple cover plates 4 are all detachably connected to the frame 3 through bolts. A sealing gasket is provided between the frame 3 and the cover plate 4.

[0034] Through the arrangement of the multiple cover plates 4, when it is necessary to replace a certain ultrafiltration membrane element 20, only the corresponding cover plate 4 above it needs to be opened, making the operation more time-saving and labor-saving.

[0035] Specifically combined with Figure 1 , in an embodiment of the present utility model, a plurality of support rods 25 are fixedly penetrated through the water inlet buffer partition 17 and the installation partition 19. The bottom end of the support rod 25 is fixedly connected to the inner wall of the box body 1, and the top end of the support rod 25 is fixedly connected to the bottom of the frame 3.

[0036] Through the arrangement of multiple support rods 25, the connection strength between the water inlet buffer partition 17 and the installation partition 19 and the box body 1 can be improved, thereby improving the stability of the equipment operation.

[0037] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A box-type hollow fiber ultrafiltration membrane filtration device, characterized in that: The invention comprises a box body (1) fixed on a base (2), a frame (3) fixedly connected to the top opening of the box body (1), a cover plate (4) detachably sealed and connected to the frame (3), a water inlet buffer baffle (17) and a mounting baffle (19) fixedly connected to the inner wall of the box body (1) in sequence from bottom to top, a plurality of ultrafiltration membrane elements (20) are installed on the water inlet buffer baffle (17) and the mounting baffle (19), the bottom end of the ultrafiltration membrane element (20) is the water inlet end, and the The top end of the ultrafiltration membrane element (20) is a water outlet end, and the ultrafiltration membrane element (20) is detachably sealed and connected to the mounting baffle (19). A plurality of water inlet channels (18) are provided through the water inlet buffer baffle (17). The outer wall of the box body (1) is provided with at least one first drainage port (7), a plurality of first water inlets (8), a plurality of second drainage ports (9), at least one backwashing water inlet (10) and a plurality of water outlets (11). An air washing mechanism is provided and installed on the box body (1).

2. A box-type hollow fiber ultrafiltration membrane filtration device according to claim 1, characterized in that: The first water outlet (7) and the first water inlet (8) are both located below the water inlet buffer baffle (17), the second water outlet (9) is both located above the water inlet buffer baffle (17) and close to the water inlet buffer baffle (17), and the backwash water inlet (10) and the water outlet (11) are both located above the installation baffle (19) and close to the installation baffle (19).

3. The box-type hollow fiber ultrafiltration membrane filtration device according to claim 1, characterized in that: A connecting flange (21) is fixedly sleeved on the top of the outer wall of the ultrafiltration membrane element (20), and a sealing ring (22) is arranged at the bottom of the connecting flange (21). The bottom surface of the sealing ring (22) is in contact with the top surface of the mounting baffle (19), and a plurality of screw rods (23) are fixedly connected to the top of the mounting baffle (19) and the corresponding positions of each connecting flange (21), and the top ends of the screw rods (23) pass through the corresponding sealing rings (22) and the connecting flange (21) and are then matched with nuts (24).

4. The box-type hollow fiber ultrafiltration membrane filtration device according to claim 1, characterized in that: The air washing mechanism comprises a main air inlet pipe (14) with both ends penetrating the box body (1); the main air inlet pipe (14) is located at the bottom of the box body (1); the outer wall of the main air inlet pipe (14) located in the box body (1) is connected to a plurality of air supply branch pipes (15); the air supply branch pipes (15) are connected to a plurality of air outlet disks (16); a plurality of air outlet holes are opened on the top of the air outlet disk (16); an exhaust hole is provided on the cover plate (4), and an exhaust valve (6) is installed at the exhaust hole.

5. The box-type hollow fiber ultrafiltration membrane filtration device according to claim 1, characterized in that: There are a plurality of cover plates (4), and the plurality of cover plates (4) are detachably connected to the frame (3) via bolts, and a sealing gasket is provided between the frame (3) and the cover plates (4).

6. The box-type hollow fiber ultrafiltration membrane filtration device according to claim 1, characterized in that: A plurality of support rods (25) are fixedly provided on the water inlet buffer baffle (17) and the installation baffle (19), the bottom ends of the support rods (25) are fixedly connected to the inner wall of the box body (1), and the top ends of the support rods (25) are fixedly connected to the bottom of the frame (3).

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