Filtering device for municipal water supply and drainage

Abstract

The utility model discloses a filtering device for municipal water supply and drainage, belongs to the field of sewage treatment, and solves the problems that an existing filter screen cleaning mode is relatively inconvenient, and relatively long time is consumed. The device comprises a filter box and a cleaning mechanism, the front end of the filter box is provided with a water inlet, the rear end of the filter box is provided with a drain pipe, and a filter screen is arranged in the filter box; the cleaning mechanism comprises a cleaning motor, a rotating shaft and scrapers, the cleaning motor is installed outside the filter box, the rotating shaft is connected to the output end of the cleaning motor, the rotating shaft penetrates through the filter screen and is rotationally connected to the filter box, and the scrapers are installed on the rotating shaft and attached to the front surface and the rear surface of the filter screen. The cleaning mechanism is arranged in the filter box, the filter screen can be cleaned at any time, the filter screen does not need to be taken out, self-cleaning can be carried out in the device, the scraping plate can be driven to rotate by starting the cleaning motor, sundries attached to the surface of the filter screen can be scraped, operation is rapid, and cleaning work can be completed without long-time waiting.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, and in particular relates to a filtering device for municipal water supply and drainage. Background Art

[0002] Municipal water supply and drainage filtration devices usually use filter screens to filter sewage. After long-term use, the filter screens are attached with debris, and the operation needs to be suspended to remove the filter screens for cleaning, which is inconvenient and time-consuming, affecting work efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a filtering device for municipal water supply and drainage, so as to solve the problem that the existing filter cleaning method is relatively inconvenient and time-consuming.

[0004] The technical solution of the utility model is: a filtering device for municipal water supply and drainage, including a filter box and a cleaning mechanism, the front end of the filter box is provided with a water inlet, the rear end of the filter box is provided with a drain pipe, and the filter box is provided with a filter screen; the cleaning mechanism includes a cleaning motor, a rotating shaft and a scraper, the cleaning motor is installed outside the filter box, the rotating shaft is connected to the output end of the cleaning motor, the rotating shaft passes through the filter screen and is rotatably connected to the filter box, the scraper is installed on the rotating shaft, and the scraper is arranged to fit the front and rear surfaces of the filter screen.

[0005] As a further improvement of the present invention, a sewage outlet is provided at the bottom of the filter box, the sewage outlet corresponds to the position of the filter screen, a collecting tank is provided below the sewage outlet, and a bottom cover is provided at the bottom of the collecting tank.

[0006] As a further improvement of the utility model, it also includes a processing tank, which is provided with a water inlet pipe and a dosing port. The processing tank is connected to the water inlet through a connecting pipe, and a stirring mechanism is provided in the processing tank.

[0007] As a further improvement of the present invention, the stirring mechanism includes a stirring shaft and multiple stirring rods. The upper end of the stirring shaft is connected to a stirring motor. The stirring rods are installed on the stirring shaft. The multiple stirring rods are arranged along the radial direction and axis of the stirring shaft.

[0008] As a further improvement of the present invention, the ends of the stirring rods are connected as a whole through reinforcement rings, and a plurality of vertical scraping strips are provided between the reinforcement rings, and the scraping strips are arranged to fit the inner wall of the processing tank.

[0009] The beneficial effects of this utility model are as follows: the utility model is provided with a cleaning mechanism in the filter box, which can clean the filter at any time without removing the filter, and can perform self-cleaning inside the device. Turning on the cleaning motor drives the scraper to rotate and scrape away debris attached to the filter surface. The operation is quick and the cleaning work can be completed without waiting for a long time. The utility model is provided with a treatment tank at the front end of the filter box, which can be used in conjunction with chemical disinfection to improve the water treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 This is an exploded schematic diagram of the filter box in the utility model;

[0012] Figure 3 It is a structural diagram of the cleaning mechanism in the utility model;

[0013] Figure 4 This is a schematic diagram of the internal structure of the processing tank in the utility model;

[0014] Figure 5 It is a structural diagram of the stirring mechanism in the utility model.

[0015] In the figure: 2-treatment tank; 3-top cover; 4-dosing port; 5-water inlet pipe; 51-water inlet valve; 6-connecting pipe; 7-filter box; 71-water inlet; 72-drain pipe; 73-filter screen; 74-drain valve; 75-sewage outlet; 801-collecting tank; 802-bottom cover; 85-first support frame; 86-cleaning motor; 87-rotating shaft; 88-first fixed sleeve; 89-scraper; 91-second support frame; 92-stirring motor; 93-stirring shaft; 94-second fixed sleeve; 95-stirring rod; 96-reinforcement ring; 97-scraper bar. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings.

[0017] like Figure 1-5 As shown, a municipal water supply and drainage filtration device includes a filter box 7 and a cleaning mechanism. The front end of the filter box 7 is provided with a water inlet 71, the rear end of the filter box 7 is provided with a drain pipe 72, the drain pipe 72 is provided with a drain valve 74, and the filter box 7 is provided with a filter screen 73. The cleaning mechanism includes a cleaning motor 86, a rotating shaft 87, and a scraper 89. The cleaning motor 86 is mounted on the outside of the filter box 7 via a first support frame 85. The rotating shaft 87 is connected to the output end of the cleaning motor 86. The rotating shaft 87 passes through the filter screen 73 and is rotatably connected to the filter box 7. The scraper 89 is mounted on the rotating shaft 87 via a first fixing sleeve 88. The scraper 89 is arranged to fit the front and rear surfaces of the filter screen 73. The front and rear mentioned in this utility model are defined according to the direction of water flow.

[0018] A sewage outlet 75 is provided at the bottom of the filter box 7 , and the sewage outlet 75 corresponds to the position of the filter screen 73 . A collecting tank 801 is provided below the sewage outlet 75 , and a bottom cover 802 is provided at the bottom of the collecting tank 801 .

[0019] The process tank 2 also includes a treatment tank 2, which is provided with a water inlet pipe 5 and a dosing port 4. The water inlet pipe 5 is provided with a water inlet valve 51. The treatment tank 2 is connected to the water inlet 71 through a connecting pipe 6. A stirring mechanism is provided in the treatment tank 2.

[0020] The stirring mechanism includes a stirring shaft 93 and a plurality of stirring rods 95 . The upper end of the stirring shaft 93 is connected to a stirring motor 92 . The stirring rods 95 are mounted on the stirring shaft 93 through a second fixing sleeve 94 . The plurality of stirring rods 95 are arranged along the radial direction and axis of the stirring shaft 93 .

[0021] The ends of the stirring rod 95 are connected as a whole through a reinforcement ring 96 , and a plurality of vertical scraping strips 97 are provided between the reinforcement rings 96 . The scraping strips 97 are arranged to fit the inner wall of the processing tank 2 .

[0022] A top cover 3 is provided on the top of the treatment tank 2 . The water inlet pipe 5 and the drug adding port 4 are both provided on the top cover 3 . The stirring motor 92 is installed on the top cover 3 through a second support frame 91 .

[0023] Chemical is added to treatment tank 2 through dosing port 4. Sewage enters treatment tank 2 through water inlet pipe 5. Stirring motor 92 is activated, and stirring shaft 93 rotates stirring rod 95, mixing the chemical and sewage, thereby disinfecting the sewage. This stirring also rotates scraper 97, which cleans the inner wall of treatment tank 2 to prevent debris from adhering. The sewage then enters filter box 7 through connecting pipe 6, is filtered by filter screen 73, and is discharged through drain pipe 72.

[0024] After a period of use, the filter screen 73 needs to be cleaned. The inlet valve 51 and drain valve 74 are closed, pausing the device. The cleaning motor 86 is turned on, and the rotating shaft 87 drives the scraper 89 to rotate. Debris adhering to the surface of the filter screen 73 is scraped off by the scraper 89 and falls into the collection trough 801 below. The debris can then be removed by opening the bottom cover 802. Once cleaning is complete, operations can be resumed immediately, making it quick and convenient without compromising efficiency.

Claims

1. A filter device for municipal water supply and drainage, characterized by: The invention comprises a filter box (7) and a cleaning mechanism, wherein the front end of the filter box (7) is provided with a water inlet (71), the rear end of the filter box (7) is provided with a drain pipe (72), and the filter box (7) is provided with a filter screen (73); the cleaning mechanism comprises a cleaning motor (86), a rotating shaft (87) and a scraper (89), the cleaning motor (86) is installed outside the filter box (7), the rotating shaft (87) is connected to the output end of the cleaning motor (86), the rotating shaft (87) passes through the filter screen (73) and is rotatably connected to the filter box (7), the scraper (89) is installed on the rotating shaft (87), and the scraper (89) is arranged to fit the front and rear surfaces of the filter screen (73).

2. A filter device for municipal water supply and drainage according to claim 1, characterized in that: A sewage outlet (75) is provided at the bottom of the filter box (7), and the sewage outlet (75) corresponds to the position of the filter screen (73). A collecting trough (801) is provided below the sewage outlet (75), and a bottom cover (802) is provided at the bottom of the collecting trough (801).

3. A filter device for municipal water supply and drainage according to claim 1 or 2, characterized in that: The invention also includes a treatment tank (2), which is provided with a water inlet pipe (5) and a drug addition port (4). The treatment tank (2) is connected to the water inlet (71) via a connecting pipe (6), and a stirring mechanism is provided in the treatment tank (2).

4. A filter device for municipal water supply and drainage according to claim 3, characterized in that: The stirring mechanism comprises a stirring shaft (93) and a plurality of stirring rods (95); the upper end of the stirring shaft (93) is connected to a stirring motor (92); the stirring rods (95) are mounted on the stirring shaft (93); and the plurality of stirring rods (95) are arranged along the radial direction and the axis of the stirring shaft (93).

5. A filter device for municipal water supply and drainage according to claim 4, characterized in that: The ends of the stirring rods (95) are connected as a whole through the reinforcement rings (96), and a plurality of vertical scraping strips (97) are provided between the reinforcement rings (96), and the scraping strips (97) are arranged in contact with the inner wall of the processing tank (2).

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