Flat membrane microfiltration device for sewage treatment

Abstract

The utility model discloses a flat membrane microfiltration device for sewage treatment, which comprises a filter box and a first dynamic filter membrane assembly longitudinally arranged in the middle of the filter box, the first dynamic filter membrane assembly comprises two first mounting rollers, two second mounting rollers and two third mounting rollers, the two first mounting rollers, the two second mounting rollers and the two third mounting rollers are sequentially and rotationally connected to the upper part, the middle part and the lower part of the filter box, and the distances are sequentially reduced from top to bottom; the first filter membrane body is arranged outside the first mounting roller, the second mounting roller and the third mounting roller in a sleeving manner; the waste residue cleaning assembly is arranged at the top of the filter box. According to the utility model, through the dynamic switching characteristic of the first filter membrane body, the filtering effect of the filter membrane is ensured, and under the morphological characteristic that the first filter membrane body is wide at the top and narrow at the bottom, in combination with the action of the waste residue cleaning assembly, the cleaning effect and efficiency are further ensured while waste residues on the first filter membrane body are cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a flat membrane microfiltration device for sewage treatment. Background Art

[0002] Membrane-bioreactor wastewater treatment technology is a modern industrial wastewater treatment technology that combines a membrane separation unit with a biological treatment unit. According to the structure of the membrane, it can be divided into flat membrane, tubular membrane and hollow fiber membrane, etc., and according to the membrane pore size, it can be divided into microfiltration membrane, ultrafiltration membrane, nanofiltration membrane and reverse osmosis membrane, etc. Among them, flat membrane is a new and efficient wastewater treatment technology, and membrane-bioreactor is increasingly attracting attention from all countries. In actual use, the existing flat membrane microfiltration device for sewage treatment mostly uses a replacement and cleaning method for cleaning the filter membrane. This method firstly requires shutdown operation, and a series of processes such as shutdown, replacement, and startup are very time-consuming; secondly, the filter membrane replacement operation is cumbersome, which further reduces the work efficiency. In order to solve the above problems, a flat membrane microfiltration device for sewage treatment is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a flat membrane microfiltration device for sewage treatment. The device ensures the filtering effect of the filter membrane through the dynamic switching characteristics of the first filter membrane body, and under its wide-upper-narrow-lower-side morphological characteristics, combined with the function of the waste residue cleaning component, the waste residue on the first filter membrane body is cleaned, and the cleaning effect and efficiency are further guaranteed.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flat membrane microfiltration device for sewage treatment, comprising: a filter box, an inlet pipe and an outlet pipe arranged on both sides of the filter box; and a first dynamic filter membrane assembly longitudinally arranged in the middle of the filter box, the first dynamic filter membrane assembly comprising two first mounting rollers, two second mounting rollers and two third mounting rollers, the two first mounting rollers, the two second mounting rollers and the two third mounting rollers are rotatably connected to the upper, middle and lower parts of the filter box in sequence, and the spacing decreases from top to bottom in sequence; and a first filter membrane body sleeved on the outside of the first mounting roller, the second mounting roller and the third mounting roller; and also comprising a waste residue cleaning assembly arranged on the top of the filter box, when the first filter membrane body runs between the two first mounting rollers, the waste residue cleaning assembly is used to rinse and collect the waste residue thereon.

[0005] Preferably, the waste residue cleaning assembly consists of a flushing assembly and a belt recovery assembly, the flushing assembly is arranged on the top of the filter box, the belt recovery assembly is arranged on the upper part of the filter box and placed inside the first filter membrane body to collect waste residue on the first filter membrane body between the two first mounting rollers; the flushing assembly includes a spray head, the spray head longitudinally penetrates the top of the filter box, and a connecting pipe arranged on the top of the spray head, and the connecting pipe is connected to the connecting sleeve through a pump body arranged at its end, and the connecting sleeve is arranged on the top of the water outlet pipe and connected to the water outlet pipe.

[0006] Preferably, the belt recovery assembly includes a through slot which is opened through the upper part of the filter box and is placed below the first mounting roller, and two mounting plates fixed on both sides of the through slot, and the two ends of the two mounting plates extend outward and are respectively rotatably connected to rollers, and the two rollers are sleeved with transmission belts; it also includes a recovery frame which is fixed to the side wall of the filter box and placed at the conveying end of the transmission belt; a driving motor is also provided at the end of one of the mounting plates away from the recovery frame, and the output shaft of the driving motor passes through a through hole opened at the end of one of the mounting plates and is fixedly connected to the corresponding roller.

[0007] Preferably, a second dynamic filter membrane assembly is also longitudinally arranged in the middle of the filter box, and the second dynamic filter membrane assembly includes two transmission rollers, which are respectively arranged at the upper and lower parts of the filter box; and a second filter membrane body mounted on the two transmission rollers, and the second filter membrane body is placed inside the first filter membrane body; and also includes a second motor arranged on the outer wall of the filter box, and the output end of the second motor extends toward the inside of the filter box and is fixedly connected to the lower transmission roller.

[0008] Preferably, a scraper frame assembly is also provided on the upper part of the filter box, and the scraper frame assembly includes a placement groove, the placement groove is opened through the upper part of the filter box, and a slag collecting part is installed inside the placement groove and can be pulled out, and the slag collecting part is provided with an open groove opposite to the running direction of the second filter membrane body and forms a groove part and a scraper part, and the scraper part is tangent to the surface of the second filter membrane body, when the second filter membrane body rotates, the scraper part is used to scratch the surface of the second filter membrane body and guide the waste residue to the groove part.

[0009] Preferably, the groove where the slag collecting member is located is also provided with a plurality of filter holes.

[0010] Preferably, two partitions are further provided at the lower portion of the filter box, and the two partitions are tangent to both sides of the first filter membrane body.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model ensures the filtering effect of the filter membrane through the dynamic switching characteristics of the first filter membrane body. At the same time, the two first mounting rollers, the two second mounting rollers, and the two third mounting rollers are rotatably connected to the upper, middle, and lower parts of the filter box in sequence, and the spacing is reduced from top to bottom, so that the first filter membrane body mounted on the first mounting roller, the second mounting roller, and the third mounting roller presents an irregular shape that is wide at the top and narrow at the bottom, as shown in the figure. This shape design is combined with the waste residue cleaning component on the upper part of the filter box, which realizes the waste residue cleaning process on the first filter membrane body while ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0014] Figure 2 This is a schematic diagram of the third perspective structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a third viewing angle;

[0016] Figure 4 It is a side view structural schematic diagram of the utility model;

[0017] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure.

[0019] In the figure: 1. filter box; 2. water inlet pipe; 3. water outlet pipe; 4. flushing assembly; 401. spray head; 402. connecting pipe; 403. pump body; 404. connecting sleeve; 5. first dynamic filter membrane assembly; 501. first mounting roller; 502. second mounting roller; 503. third mounting roller; 504. first filter membrane body; 505. first motor; 6. second dynamic filter membrane assembly; 601. transmission roller; 602. second filter membrane body; 603. second motor; 7. scraper frame assembly; 701. slag collecting part; 702. opening groove; 703. filter hole; 704. placement groove; 9. belt recovery assembly; 901. mounting plate; 902. transmission belt; 903. driving motor; 904. recovery frame; 905. through groove; 10. handle. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.

[0021] Example 1

[0022] See also Figures 1 to 6 The utility model preferably provides a technical solution: a flat membrane microfiltration device for sewage treatment, comprising: a filter box 1, an inlet pipe 2 and an outlet pipe 3 arranged on both sides of the filter box 1; and a first dynamic filter membrane assembly 5 longitudinally arranged in the middle of the filter box 1, the first dynamic filter membrane assembly 5 comprising two first mounting rollers 501, two second mounting rollers 502 and two third mounting rollers 503, the two first mounting rollers 501, the two second mounting rollers 502, and the two third mounting rollers 503 are rotatably connected to the upper, middle and lower parts of the filter box 1 in sequence, and the spacing is reduced from top to bottom in sequence; and a first filter membrane body 504 sleeved on the outside of the first mounting roller 501, the second mounting roller 502, and the third mounting roller 503; and also comprising a waste residue cleaning assembly arranged on the top of the filter box 1, when the first filter membrane body 504 runs between the two first mounting rollers 501, the waste residue cleaning assembly is used to wash and collect the waste residue thereon.

[0023] In this embodiment, the water inlet pipe 2 and the water outlet pipe 3 arranged on both sides of the filter box 1 are connected to the external sewage pipe and the clean water pipe respectively; and the first dynamic filter membrane assembly 5 arranged longitudinally in the middle of the filter box 1 has the following structural characteristics: Figure 1 , 5 As shown, the dynamic switching characteristics of the first filter membrane body 504 ensure the filtering effect of the filter membrane. At the same time, the two first installation rollers 501, the two second installation rollers 502, and the two third installation rollers 503 are rotated and connected to the upper, middle, and lower parts of the filter box 1 in sequence, and the spacing is reduced from top to bottom, so that the first filter membrane body 504 sleeved on the first installation roller 501, the second installation roller 502, and the third installation roller 503 is an irregular shape with a wide top and a narrow bottom. Figure 5 As shown, this form design is combined with the waste residue cleaning component on the upper part of the filter box 1, which realizes the waste residue cleaning process on the first filter membrane body 504 and ensures the cleaning effect;

[0024] In this device, the running direction of the first filter membrane body 504 is preferably clockwise, and the power comes from the first motor 505 arranged on the outer wall of the filter box 1. Figure 2As shown, the output shaft of the first motor 505 passes through the mounting hole opened in the side wall of the filter box 1 and is fixed to one of the first mounting rollers 501 , and in order to ensure the filtering effect of the first dynamic filter membrane assembly 5 , the sewage water level inside the filter box 1 is not higher than the position of the second mounting roller 502 .

[0025] This design ensures the filtering effect of the filter membrane through the dynamic switching characteristics of the first filter membrane body 504. Under its wide-upper-narrow-lower-side morphological characteristics, combined with the function of the waste residue cleaning component, it realizes the cleaning of waste residue on the first filter membrane body 504 and further ensures the cleaning effect and efficiency.

[0026] Example 2

[0027] As another embodiment of the utility model, the waste residue cleaning component is composed of a flushing component 4 and a belt recovery component 9, the flushing component 4 is arranged on the top of the filter box 1, the belt recovery component 9 is arranged on the upper part of the filter box 1 and is placed inside the first filter membrane body 504 to collect the waste residue on the first filter membrane body 504 between the two first mounting rollers 501; the flushing component 4 includes a spray head 401, the spray head 401 longitudinally penetrates the top of the filter box 1, and a connecting pipe 402 is arranged on the top of the spray head 401, and the connecting pipe 402 is connected to the connecting sleeve 404 through the pump body 403 arranged at its end, and the connecting sleeve 404 is arranged on the top of the outlet pipe 3 and is connected to the outlet pipe 3.

[0028] like Figure 1 , 4 As shown, the spray head 401 is arranged on the top of the filter box 1, and the spray end thereof is placed above the first filter membrane body 504 and covers the first filter membrane body 504 between the two first installation rollers 501. The top thereof is connected with a connecting pipe 402, and a pump body 403 is installed between the connecting pipe 402 and the connecting sleeve 404. When the pump body 403 is activated, the filtered water inside the outlet pipe 3 can be re-sucked into the spray head 401, and the first filter membrane body 504 can be flushed to realize the water recycling process.

[0029] Furthermore, the belt recovery assembly 9 includes a through slot 905 which is opened through the upper part of the filter box 1 and is placed below the first mounting roller 501, and two mounting plates 901 fixed on both sides of the through slot 905, and the two ends of the two mounting plates 901 extend outward and are respectively rotatably connected to rollers, and the two rollers are sleeved with a transmission belt 902; it also includes a recovery frame 904 fixed to the side wall of the filter box 1 and placed at the conveying end of the transmission belt 902; a drive motor 903 is also provided at the end of one of the mounting plates 901 away from the recovery frame 904, and the output shaft of the drive motor 903 passes through a through hole opened at the end of one of the mounting plates 901 and is fixedly connected to the corresponding roller.

[0030] like Figure 1 ,3 As shown, the through groove 905 is horizontally opened at the upper part of the filter box 1 and is placed below the first installation roller 501, and the transmission belt 902 arranged inside it is placed directly below the first filter membrane body 504 between the two first installation rollers 501, and is used to receive and transport the waste residue washed therefrom, as shown in FIG. Figure 5 As shown, a recovery frame 904 is disposed at the output end of the drive belt 902 to further collect waste residues to complete the centralized recovery process of the waste residues.

[0031] Example 3

[0032] As other embodiments of the utility model, a second dynamic filter membrane assembly 6 is also longitudinally arranged in the middle of the filter box 1, and the second dynamic filter membrane assembly 6 includes two transmission rollers 601, and the two transmission rollers 601 are respectively arranged at the upper and lower parts of the filter box 1; and a second filter membrane body 602 is sleeved on the two transmission rollers 601, and the second filter membrane body 602 is placed inside the first filter membrane body 504; it also includes a second motor 603 arranged on the outer wall of the filter box 1, and the output end of the second motor 603 extends toward the inside of the filter box 1 and is fixedly connected to the lower transmission roller 601.

[0033] In this embodiment, the second filter membrane body 602 and the first filter membrane body 504 are distributed inside and outside. Figure 1 , 5 As shown, this structural characteristic enables the sewage to undergo a multi-stage filtration process when it flows from the water inlet pipe 2 to the water outlet pipe 3, thereby further improving the filtration effect of the sewage.

[0034] Example 4

[0035] As other embodiments of the utility model, a scraper frame assembly 7 is also provided on the upper part of the filter box 1, and the scraper frame assembly 7 includes a placement groove 704, the placement groove 704 is opened through the upper part of the filter box 1, and a slag collecting part 701 is installed inside the placement groove 704 and can be pulled out, and the slag collecting part 701 is provided with an open groove 702 opposite to the running direction of the second filter membrane body 602 and forms a groove part and a scraper part, and the scraper part is tangent to the surface of the second filter membrane body 602. When the second filter membrane body 602 rotates, the scraper part is used to scratch the surface of the second filter membrane body 602 and guide the waste residue to the groove part.

[0036] Here, if Figure 4 , 5 As shown, the slag collecting member 701 is arranged inside the placing groove 704 and is horizontally arranged on the upper part of the filter box 1, and the running direction of the second filter membrane body 602 is consistent with the rotation direction of the first filter membrane body 504, both of which are clockwise. The slag collecting member 701 is provided with an open groove 702 in the opposite direction of the rotation of the second filter membrane body 602 and forms a groove part and a scraping part. The scraping part is tangent to the surface of the second filter membrane body 602, and the scraping part is combined with the second filter membrane body 602. Figure 6As shown, when the second filter membrane body 602 rotates clockwise, the scraper can scrape the surface of the second filter membrane body 602 and collect the waste residue into the groove, thereby completing the cleaning process of the second filter membrane body 602.

[0037] Furthermore, a handle 10 is fixed to a side of the slag collecting member 701 away from the recovery frame 904 .

[0038] Furthermore, the groove where the slag collecting member 701 is located is also provided with a plurality of filter holes 703, such as Figure 6 shown.

[0039] Furthermore, two partitions are provided at the bottom of the filter box 1, and the two partitions are tangent to both sides of the first filter membrane body 504, such as Figure 5 As shown, this design is to reduce the situation where the first filter membrane body 504 and the bottom of the filter box 1 are relatively moved, which may affect the water filtering effect.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. There are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, or through the method of bolt connection, etc.

[0041] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A flat membrane microfiltration device for sewage treatment, characterized in that: include: A filter box (1), a water inlet pipe (2) and a water outlet pipe (3) arranged on both sides of the filter box (1); and a first dynamic filter membrane assembly (5) longitudinally arranged in the middle of the filter box (1), the first dynamic filter membrane assembly (5) comprising two first mounting rollers (501), two second mounting rollers (502) and two third mounting rollers (503), the two first mounting rollers (501), the two second mounting rollers (502) and the two third mounting rollers (503) being rotatably connected to the upper, middle and lower parts of the filter box (1) in sequence, and the spacing between them is reduced in sequence from top to bottom; and a first filter membrane body (504) sleeved on the outside of the first installation roller (501), the second installation roller (502), and the third installation roller (503); It also includes a waste residue cleaning assembly arranged on the top of the filter box (1), and when the first filter membrane body (504) runs between the two first installation rollers (501), the waste residue cleaning assembly is used to flush and collect the waste residue thereon.

2. A flat membrane microfiltration device for sewage treatment according to claim 1, characterized in that: The waste residue cleaning assembly is composed of a flushing assembly (4) and a belt recovery assembly (9), wherein the flushing assembly (4) is arranged on the top of the filter box (1), and the belt recovery assembly (9) is arranged on the upper part of the filter box (1) and placed inside the first filter membrane body (504) to collect waste residue on the first filter membrane body (504) between the two first installation rollers (501); The flushing assembly (4) comprises a spray head (401), the spray head (401) longitudinally penetrating the top of the filter box (1), and a connecting pipe (402) arranged on the top of the spray head (401), and the connecting pipe (402) is connected to a connecting sleeve (404) through a pump body (403) arranged at the end thereof, and the connecting sleeve (404) is arranged on the top of the water outlet pipe (3) and is connected to the water outlet pipe (3).

3. A flat membrane microfiltration device for sewage treatment according to claim 2, characterized in that: The belt recovery assembly (9) comprises a through slot (905) which is opened through the upper part of the filter box (1) and is placed below the first mounting roller (501), and two mounting plates (901) fixed on both sides of the through slot (905), and the two ends of the two mounting plates (901) extend outwards and are respectively rotatably connected to rollers, and the two rollers are sleeved with transmission belts (902); It also includes a recovery frame (904) fixed to the side wall of the filter box (1) and placed at the conveying end of the transmission belt (902); A driving motor (903) is also provided at one end of one of the mounting plates (901) away from the recovery frame (904), and an output shaft of the driving motor (903) passes through a through hole provided at the end of one of the mounting plates (901) and is fixedly connected to the corresponding roller.

4. A flat membrane microfiltration device for sewage treatment according to claim 1, characterized in that: A second dynamic filter membrane assembly (6) is also longitudinally arranged in the middle of the filter box (1), and the second dynamic filter membrane assembly (6) comprises two transmission rollers (601), and the two transmission rollers (601) are respectively arranged at the upper and lower parts of the filter box (1); and a second filter membrane body (602) sleeved on the two driving rollers (601), wherein the second filter membrane body (602) is placed inside the first filter membrane body (504); It also comprises a second motor (603) arranged on the outer wall of the filter box (1), wherein the output end of the second motor (603) extends into the interior of the filter box (1) and is fixedly connected to the lower transmission roller (601).

5. A flat membrane microfiltration device for sewage treatment according to claim 1, characterized in that: The upper part of the filter box (1) is also provided with a scraper frame assembly (7), and the scraper frame assembly (7) includes a placement groove (704), the placement groove (704) is opened through the upper part of the filter box (1), and a slag collecting part (701) installed inside the placement groove (704) and can be pulled out, and the slag collecting part (701) is provided with an open groove (702) opposite to the running direction of the second filter membrane body (602) and forms a groove part and a scraper part, and the scraper part is tangent to the surface of the second filter membrane body (602), when the second filter membrane body (602) rotates, the scraper part is used to scrape the surface of the second filter membrane body (602) and guide the waste residue to the groove part.

6. A flat membrane microfiltration device for sewage treatment according to claim 5, characterized in that: The groove where the slag collecting member (701) is located is also provided with a plurality of filter holes (703).

7. A flat membrane microfiltration device for sewage treatment according to claim 1, characterized in that: The lower part of the filter box (1) is also provided with two partitions, and the two partitions are tangent to the two sides of the first filter membrane body (504).

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