Flat sheet membrane filtration device

Abstract

The utility model relates to flat plate membrane filtration technical field discloses a kind of flat plate membrane filtration device, including bearing frame, filter cartridge and intercepting box, the filter basket is embedded in the intercepting box, the mounting seat is fixedly installed in the filter cartridge, the flat plate membrane body is installed on the mounting seat upper end by fastener, the inner wall of the flow guide ring is fixed with multiple groups of oblique shunt piece, the bottom of the flow guide ring is fixed with elastic scraping strip, the utility model uses the physical barrier effect of filter basket, the large block impurities contained in water flow are left in basket, pretreated sewage flows into annular water jet pipe, annular water jet pipe first converts direct water flow into full range spraying, using rotating force lets water flow spiral downward along piece body, avoid membrane local pollution overload, while elastic scraping strip and flat plate membrane body surface slightly contact, continuously physically wipe membrane surface in the process of rotation, to reduce membrane replacement frequency, improve filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of flat sheet membrane filtration technology, and in particular to a flat sheet membrane filtration device. Background Technology

[0002] A flat-plate filter membrane is a filtration device that uses a flat-plate design to separate impurities from liquids or gases through physical sieving principles. Flat-plate filter membranes consist of flat-plate membrane modules, typically secured by a stainless steel frame, and utilize a flow channel design to achieve high-efficiency filtration. An existing energy-saving flat-plate ceramic membrane filtration device (publication number: CN222729553U) uses a motor to drive a rotating cleaning brush. Although this achieves automated cleaning of the ceramic membrane surface, if large impurities carried in the wastewater enter the filter tank, they will directly impact the ceramic membrane. This not only easily causes physical damage to the membrane surface but also accelerates the accumulation of impurities on the membrane surface, leading to faster membrane fouling. Furthermore, the direct action of water flow on the membrane surface can easily cause localized overload of the membrane, further reducing the overall filtration efficiency of the device. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a flat sheet membrane filtration device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A flat sheet membrane filtration device includes a support frame, a filter cartridge, and an interception box. A filter basket is embedded in the interception box. A delivery pipe is fixed between the bottom end of the interception box and the side wall of the filter cartridge. An installation base is fixedly installed inside the filter cartridge. A flat sheet membrane body is installed on the upper end of the installation base by fasteners. A movable frame is provided above the flat sheet membrane body. A flow guide ring is fixedly installed at the bottom end of the movable frame. Multiple sets of inclined flow dividers are fixed on the inner wall of the flow guide ring. An elastic scraper is fixed at the bottom of the flow guide ring.

[0005] As a further embodiment of this utility model, the top of the interception box is fitted with a flip cover via a buckle, and a water inlet pipe is fixed to the outer side wall of the interception box.

[0006] As a further embodiment of this utility model, an annular water spray pipe is installed inside the filter cylinder by fasteners, and a motor is fixedly installed on the top of the filter cylinder.

[0007] As a further embodiment of this utility model, the motor is fixedly connected to the movable frame via an output shaft, and a drain pipe is fixed on the side of the filter cylinder away from the conveying pipe.

[0008] As a further embodiment of this utility model, a fixing pipe is fixed between the conveying pipe and the annular spray pipe, and the fixing pipe passes through and connects to the side wall of the filter cylinder.

[0009] As a further embodiment of this utility model, a second valve is fixedly installed on the sewage pipe, a drain pipe is fixedly installed at the bottom of the filter cylinder, and a first valve is fixedly installed on the drain pipe.

[0010] As a further embodiment of this utility model, a valve three is fixedly installed on the conveying pipe, and the filter cylinder and the interception box are installed on the support frame by fasteners.

[0011] Compared with the prior art, the present invention has the following beneficial effects: During wastewater treatment, when wastewater enters the interception box from the inlet pipe, it first flows through the built-in filter basket. The physical barrier effect of the filter basket traps large impurities in the water flow, preventing them from entering subsequent pipes and the membrane zone. After interception, the wastewater enters the filter cartridge through the delivery pipe. The pre-treated wastewater flows into the annular spray pipe, which first converts the direct water flow into a full-range spray to reduce local water flow concentration. When the motor-driven movable frame rotates the guide ring, the rotating guide ring further disperses the water flow through each set of inclined diverting plates. The rotational force makes the water flow spiral downward along the plates, thus preventing the water flow from directly impacting the surface of the flat sheet membrane. This allows the water flow to evenly cover every part of the membrane surface, preventing localized overload of membrane fouling. At the same time, the elastic scraper makes slight contact with the surface of the flat sheet membrane, continuously wiping the membrane surface during rotation. This removes solid particles and colloidal impurities adsorbed outside the membrane pores, thereby reducing the membrane replacement frequency and improving the filtration effect. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a flat sheet membrane filtration device proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of a flat sheet membrane filtration device proposed in this utility model; Figure 3 for Figure 2 Enlarged diagram of point A in the diagram; Figure 4 This is a schematic diagram of the movable frame and flow guide ring structure of a flat sheet membrane filtration device proposed in this utility model; In the diagram: 1. Support frame; 2. Filter cartridge; 201. Drain pipe; 202. Valve 1; 203. Mounting base; 204. Annular spray pipe; 3. Interception box; 301. Filter basket; 302. Flip cover; 303. Inlet pipe; 4. Flat sheet membrane body; 401. Guide ring; 402. Inclined flow divider; 403. Elastic scraper; 404. Movable frame; 5. Motor; 6. Sewage pipe; 601. Valve 2; 7. Conveying pipe; 701. Valve 3; 702. Fixed pipe. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Reference Figures 1-4 A flat sheet membrane filtration device includes a support frame 1, a filter cartridge 2, and an interception box 3. The interception box 3 has a filter basket 301 embedded inside. A delivery pipe 7 is fixed between the bottom end of the interception box 3 and the side wall of the filter cartridge 2. An installation base 203 is fixedly installed inside the filter cartridge 2. A flat sheet membrane body 4 is installed on the upper end of the installation base 203 by fasteners. A movable frame 404 is provided above the flat sheet membrane body 4. A guide ring 401 is fixedly installed at the bottom end of the movable frame 404. Multiple sets of inclined flow dividers 402 are fixed on the inner wall of the guide ring 401. An elastic scraper 403 is fixed at the bottom of the guide ring 401.

[0017] After large impurities in the wastewater are first intercepted by the filter basket 301, the valve 701 is opened, and the wastewater with the large impurities removed enters the filter cylinder 2 through the conveying pipe 7, and further flows into the annular spray pipe 204. The annular spray pipe 204 transforms the originally direct water flow into a full-range spray state, reducing the local water flow concentration. Then, the motor 5 is started, and the motor 5 drives the movable frame 404 to rotate through the output shaft. The movable frame 404 drives the guide ring 401 to start rotating. The rotating guide ring 401 further disperses the water flow sprayed above through the inclined flow divider 402 set inside it. With the help of rotational force, the water flow spirals downward along the inclined flow divider 402, thereby avoiding the water flow directly impacting the surface of the flat sheet membrane body 4, allowing the water flow to... The flow guide ring 401 can evenly cover every part of the membrane surface of the flat sheet membrane body 4, preventing local pollution overload. While the flow guide ring 401 rotates, the elastic scraper 403 at its bottom end maintains slight contact with the surface of the flat sheet membrane body 4. As the flow guide ring 401 rotates, the elastic scraper 403 continuously physically wipes the membrane surface of the flat sheet membrane body 4, removing solid particles and colloidal impurities adsorbed outside the membrane pores of the flat sheet membrane body 4. Under the action of gravity, the removed impurities slide down along the conical mounting base 203 to the drain pipe 6 on one side. The clean water filtered by the flat sheet membrane body 4 can be discharged through the drain pipe 201. When it is necessary to discharge impurities, the valve 601 is opened to discharge the impurities through the drain pipe 6.

[0018] In this embodiment, a flip cover 302 is installed on the top of the interception box 3 via a buckle, and a water inlet pipe 303 is fixed on the outer side wall of the interception box 3.

[0019] When the motor 5 drives the movable frame 404 to rotate, the water flow sprayed by the annular spray pipe 204 is further dispersed through the cooperation of the guide ring 401 and the inclined flow divider 402. With the help of the rotational force, a spiral downward water flow is formed, which not only avoids the water flow from directly impacting the flat membrane body 4, but also achieves uniform coverage of the membrane surface by the water flow, effectively preventing local pollution overload of the flat membrane body 4.

[0020] In this embodiment, an annular water spray pipe 204 is installed inside the filter cylinder 2 by fasteners, and a motor 5 is fixedly installed on the top of the filter cylinder 2.

[0021] The filter basket 301 effectively intercepts and retains large impurities in the basket by physically blocking the sewage flowing into the interception box 3, preventing impurities from entering the membrane area in the subsequent delivery pipe 7 and filter cartridge 2, and effectively preventing pipe blockage and damage to the flat sheet membrane body 4.

[0022] In this embodiment, the motor 5 is fixedly connected to the movable frame 404 via the output shaft, and the filter cylinder 2 is fixed with a drain pipe 6 on the side away from the conveying pipe 7.

[0023] The annular spray pipe 204 has equally spaced oblique spray holes, which can convert the sewage transported by the conveying pipe 7 through the fixed pipe 702 into a full-range spray state.

[0024] In this embodiment, a fixing pipe 702 is fixed between the delivery pipe 7 and the annular spray pipe 204, and the fixing pipe 702 penetrates through the side wall of the filter cylinder 2.

[0025] The elastic scraper 403 uses its own elasticity to make slight contact with the surface of the flat membrane body 4, thereby continuously wiping the membrane surface during the rotation of the guide ring 401, and peeling off the solid particles and colloidal impurities adsorbed outside the membrane pores.

[0026] In this embodiment, a second valve 601 is fixedly installed on the sewage pipe 6, a drain pipe 201 is fixedly installed at the bottom of the filter cylinder 2, and a first valve 202 is fixedly installed on the drain pipe 201.

[0027] The conical mounting base 203 can guide the impurities cleaned by the elastic scraper 403 to slide towards the drain pipe 6, preventing impurities from accumulating around the membrane and providing stable support for the membrane.

[0028] In this embodiment, a valve 701 is fixedly installed on the delivery pipe 7, and the filter cylinder 2 and the interception box 3 are installed on the support frame 1 by fasteners.

[0029] The filter basket 301 can be directly removed for cleaning impurities by opening the flip cover 302, without disassembling the interception box 3 and subsequent pipelines, which facilitates the cleaning operation for staff.

[0030] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: First, sewage enters the interception box 3 from the inlet pipe 303. The filter basket 301 first intercepts and retains large impurities in the sewage through physical barrier, preventing these impurities from entering the subsequent pipes and membrane area with the water flow and causing blockage or damage. After pretreatment, valve 701 is opened, and the sewage with large impurities removed enters the filter cylinder 2 through the conveying pipe 7, and further flows into the annular spray pipe 204. The annular spray pipe 204 transforms the originally direct water flow into a full-range spray state, reducing the situation of local water flow concentration. Then, the motor 5 is started. The motor 5 drives the movable frame 404 to rotate through the output shaft. The movable frame 404 drives the guide ring 401 to start rotating. The rotating guide ring 401 further disperses the water flow sprayed above through the inclined diverting plate 402 set inside it. The rotational force causes the water to flow spirally downwards along the inclined flow divider 402, thus preventing the water from directly impacting the surface of the flat sheet membrane body 4. This allows the water to evenly cover every part of the membrane surface of the flat sheet membrane body 4, preventing localized pollution overload. While the guide ring 401 rotates, the elastic scraper 403 at its bottom maintains slight contact with the surface of the flat sheet membrane body 4. As the guide ring 401 rotates, the elastic scraper 403 continuously physically wipes the membrane surface of the flat sheet membrane body 4, removing solid particles and colloidal impurities adsorbed outside the membrane pores. Under the action of gravity, the removed impurities slide down the conical mounting base 203 to the drain pipe 6 on one side. When it is necessary to discharge impurities, the valve 601 is opened to discharge the impurities through the drain pipe 6. The clean water filtered by the flat sheet membrane body 4 can be discharged through the drain pipe 201.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A flat sheet membrane filtration device, comprising a support frame (1), a filter cartridge (2), and an interception box (3), characterized in that: The interception box (3) is embedded with a filter basket (301). A conveying pipe (7) is fixed between the bottom end of the interception box (3) and the side wall of the filter cylinder (2). An installation base (203) is fixedly installed inside the filter cylinder (2). A flat membrane body (4) is installed on the upper end of the installation base (203) by fasteners. A movable frame (404) is provided above the flat membrane body (4). A guide ring (401) is fixedly installed at the bottom end of the movable frame (404). Multiple sets of inclined flow dividers (402) are fixed on the inner wall of the guide ring (401). An elastic scraper (403) is fixed at the bottom of the guide ring (401).

2. The flat sheet membrane filtration device according to claim 1, characterized in that, The top of the interception box (3) is fitted with a flip cover (302) via a buckle, and the outer side wall of the interception box (3) is fixed with a water inlet pipe (303).

3. The flat sheet membrane filtration device according to claim 1, characterized in that, The filter cylinder (2) is fitted with an annular water spray pipe (204) by fasteners, and a motor (5) is fixedly installed on the top of the filter cylinder (2).

4. A flat sheet membrane filtration device according to claim 3, characterized in that, The motor (5) is fixedly connected to the movable frame (404) via the output shaft, and a drain pipe (6) is fixed on the side of the filter cylinder (2) away from the conveying pipe (7).

5. A flat sheet membrane filtration device according to claim 3, characterized in that, A fixing pipe (702) is fixed between the delivery pipe (7) and the annular spray pipe (204), and the fixing pipe (702) passes through and connects to the side wall of the filter cylinder (2).

6. A flat sheet membrane filtration device according to claim 4, characterized in that, A valve 2 (601) is fixedly installed on the sewage pipe (6), a drain pipe (201) is fixedly installed at the bottom of the filter cylinder (2), and a valve 1 (202) is fixedly installed on the drain pipe (201).

7. A flat sheet membrane filtration device according to claim 1, characterized in that, A valve (701) is fixedly installed on the delivery pipe (7), and the filter cylinder (2) and the interception box (3) are installed on the support frame (1) by fasteners.

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