Device for sweeping and washing surface of common rapid filter

Abstract

The utility model relates to a common rapid filter surface sweeping and washing device which comprises a filter body, a first cleaning structure is arranged outside the filter body and comprises a sweeping and washing water pipe, the sweeping and washing water pipe is fixedly installed inside the filter body, and a T-shaped water conveying pipe is fixedly installed on the left side of the sweeping and washing water pipe. According to the device for sweeping and washing the surface of the common rapid filter, a backwashing process is carried out on the interior of the filter through the arrangement of a backwashing structure, scum floats on the water surface in the backwashing process, then the floating scum retreats into a drainage tank through the arrangement of a first cleaning structure, and then a driving motor is started to drive a vertical rod and a scraper to move, so that the surface of the filter is cleaned. And the second cleaning structure is arranged to clean and pack the residual scum, so that the purpose of conveniently cleaning the scum in the backwashing process is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of surface cleaning devices for ordinary rapid sand filters, specifically a device for surface cleaning of ordinary rapid sand filters. Background Technology

[0002] A conventional rapid sand filter is a traditional type of rapid sand filter. It uses a single layer of fine sand graded filter media or a double layer of coal and sand filter media as the filter medium. During the filtration process, raw water flows from top to bottom through the filter media layer. Suspended solids are trapped in the filter media, while the clean water is collected through the water distribution system and transported to the clear water tank. When the effluent quality does not meet the requirements or the head loss of the filter layer reaches its maximum value, the filter media needs to be backwashed to ensure the continuous and efficient operation of the filter.

[0003] A search revealed a siphon filter backwash wastewater treatment and recycling mechanism disclosed in Chinese Patent Publication No. CN220098598U. This mechanism, by incorporating a pump inlet, pump outlet, and motor, and employing a self-priming pump that is easy to install, quick to start and stop, and convenient to maintain, addresses the issues of large short-term water volume and discontinuous drainage during siphon filter backwashing. Furthermore, by including a drain valve, a main flushing water pipe, and branch flushing water pipes, it improves upon the shortcomings of existing siphon filter backwash wastewater treatment and recycling mechanisms, which lack sufficient head adjustment and sometimes result in unsatisfactory flushing effects and incomplete cleaning.

[0004] However, in the backwashing wastewater treatment and recycling mechanism of the siphon filter, most of the surface scum remains on the surface during the backwashing of the filter sand and does not enter the drainage trough with the backwashing water flow. It is necessary to manually sweep it on site with water pipes. If it is not swept, the scum will adhere to the filter media after the backwashing is completed, which will affect the backwashing effect. Therefore, a surface sweeping device for ordinary rapid filter is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for surface cleaning of ordinary rapid sand filters, which has the advantages of facilitating the removal of scum during backwashing and solves the problem that the structure of existing devices needs to be optimized.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for cleaning the surface of a common rapid filter, comprising a filter body, a drainage trough fixedly installed inside the filter body, a wastewater channel fixedly installed on the left side of the filter body, a top plate fixedly installed on the top of the filter body, a first cleaning structure provided on the outside of the filter body, a second cleaning structure provided inside the filter body, and a backwashing structure provided inside the filter body;

[0007] The first cleaning structure includes a sweeping water pipe, which is fixedly installed inside the filter body. A T-shaped water pipe is fixedly installed on the left side of the sweeping water pipe. A threaded rod is rotatably connected inside the top plate. A drive motor is fixedly installed on the right side of the threaded rod. A moving block is threadedly connected to the outer surface of the threaded rod. A vertical rod is fixedly installed at the bottom of the moving block. An extension sleeve is fixedly installed inside the vertical rod. A spring body is fixedly installed inside the extension sleeve. An extension rod is fixedly installed at the end of the spring body. A scraper is fixedly installed at the end of the extension rod.

[0008] Furthermore, the second cleaning structure includes an electric slide rail, which is fixedly installed inside the top plate. A slide plate is provided on the outer surface of the electric slide rail, and a telescopic rod is fixedly installed on the top of the slide plate. A cleaning frame is fixedly installed at the output end of the telescopic rod, and a filter screen is fixedly installed inside the cleaning frame.

[0009] Furthermore, the backwashing structure includes a water distribution main pipe, a water distribution main pipe is fixedly installed at the bottom of the filter body, a water distribution branch pipe is fixedly installed on the outer surface of the water distribution main pipe, a flushing water pipe is fixedly installed on the left side of the water distribution main pipe, a support layer is provided on the top of the water distribution branch pipe, and a filter media layer is provided on the top of the support layer.

[0010] Furthermore, there are two drainage channels, two through holes are provided on the inner left wall of the filter body, two sweeping water pipes are fixedly installed on the inner front wall and inner rear wall of the filter body, and sweeping nozzles are fixedly installed on the opposite side of the two sweeping water pipes. The top of the T-shaped water supply pipe is fixedly connected to the left side of the two sweeping water pipes, and the bottom of the T-shaped water supply pipe is fixedly connected to the top of the flushing water pipe.

[0011] Furthermore, there are two threaded rods, and pulleys are fixedly installed on the outer surfaces of both threaded rods. The two pulleys are connected by belt drive. The output end of the drive motor is fixedly connected to the right side of one of the threaded rods, and a vertical rod is fixedly installed at the bottom of each threaded rod.

[0012] Furthermore, four extension sleeves are fixedly installed on the front and rear sides of each vertical rod, and a spring body is fixedly installed inside each extension sleeve, and an extension rod is fixedly installed at the end of each spring body.

[0013] Beneficial effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This device for cleaning the surface of a common rapid filter tank uses a backwashing structure to perform a backwashing process inside the filter tank. During the backwashing process, scum floats on the water surface. Then, through the first cleaning structure, a water flow is generated by the cleaning pipe and cleaning nozzle to push the floating scum into the interior of the drainage trough. Then, the drive motor is started to move the vertical rod and scraper to scrape off the scum on the inner wall of the drainage trough and send it into the wastewater channel along with the water flow. Then, the second cleaning structure cleans and packages the remaining scum, thereby facilitating the cleaning of scum during the backwashing process. Attached Figure Description

[0016] Figure 1 This is a partial three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of a portion of the top plate of this utility model;

[0018] Figure 3 This is a front sectional view of the present invention.

[0019] Figure 4 This is a side sectional view of the present invention.

[0020] Figure 5 This is a top sectional view of the top plate of this utility model.

[0021] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Filter body; 2. Drainage trough; 3. Wastewater channel; 4. Top plate; 5. First cleaning structure; 501. Sweeping water pipe; 502. T-shaped water pipe; 503. Threaded rod; 504. Drive motor; 505. Moving block; 506. Vertical rod; 507. Extension sleeve; 508. Spring body; 509. Extension rod; 510. Scraper; 6. Second cleaning structure; 601. Electric slide rail; 602. Slide plate; 603. Telescopic rod; 604. Cleaning frame; 605. Filter screen; 7. Backwashing structure; 701. Water distribution main pipe; 702. Water distribution branch pipe; 703. Flushing water pipe; 704. Support layer; 705. Filter media layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 A device for cleaning the surface of a common rapid filter includes a filter body 1, a drainage trough 2 fixedly installed inside the filter body 1, a wastewater channel 3 fixedly installed on the left side of the filter body 1, a top plate 4 fixedly installed on the top of the filter body 1, a first cleaning structure 5 provided on the outside of the filter body 1, a second cleaning structure 6 provided inside the filter body 1, and a backwashing structure 7 provided inside the filter body 1.

[0025] The first cleaning structure 5 includes a sweeping water pipe 501. The sweeping water pipe 501 is fixedly installed inside the filter body 1. A T-shaped water pipe 502 is fixedly installed on the left side of the sweeping water pipe 501. A threaded rod 503 is rotatably connected inside the top plate 4. A drive motor 504 is fixedly installed on the right side of the threaded rod 503. A moving block 505 is threadedly connected to the outer surface of the threaded rod 503. A vertical rod 506 is fixedly installed at the bottom of the moving block 505. An extension sleeve 507 is fixedly installed inside the vertical rod 506. A spring body 508 is fixedly installed inside the extension sleeve 507. An extension rod 509 is fixedly installed at the end of the spring body 508. A scraper 510 is fixedly installed at the end of the extension rod 509.

[0026] Furthermore, the second cleaning structure 6 includes an electric slide rail 601, which is fixedly installed inside the top plate 4. A slide plate 602 is provided on the outer surface of the electric slide rail 601. A telescopic rod 603 is fixedly installed on the top of the slide plate 602. A cleaning frame 604 is fixedly installed at the output end of the telescopic rod 603. A filter screen 605 is fixedly installed inside the cleaning frame 604.

[0027] Specifically, such as Figure 3 As shown, the device is electrically connected to a main control box, which controls the device. Then, by opening the flushing water pipe 703, water can be supplied to the water distribution main pipe 701 and the water distribution branch pipe 702, thereby performing a backwashing process on the support layer 704 and the filter media layer 705. After the flushing water pipe 703 supplies water, some water will be sent into the two sweeping water pipes 501 through the T-shaped water supply pipe 502 and sprayed out by the sweeping nozzles set on both sides, thus forming a water flow. The water flow sends the floating scum on the water surface into the two drainage troughs 2 and into the wastewater channel 3 through the perforation and discharged into the filter body 1.

[0028] Specifically, such as Figure 4As shown, the drive motor 504 is then turned on, and the pulley and belt drive the two threaded rods 503 to rotate in the same direction. The rotation of the two threaded rods 503 drives the two moving blocks 505 to move. The movement of the moving blocks 505 drives the scraper 510 to move along the inner wall of the drainage trough 2. The scraper 510 scrapes away the impurities adhering to the inner wall of the drainage trough 2, allowing them to be discharged into the filter body 1 with the water flow. With the spring body 508 and the action of the extension rod 509, the scraper 510 is made to fit more closely to the inner wall of the drainage trough 2, achieving a thorough cleaning effect.

[0029] Specifically, such as Figure 4 As shown, when there is still some scum on the water surface, the electric slide rail 601 can be opened to move the slide plate 602 towards the drain trough 2. Then, the telescopic rod 603 can be opened to move the two cleaning frames 604 downwards to a position on the water surface. Then, the electric slide rail 601 can be controlled to move the two cleaning frames 604 in opposite directions. With the water flow formed by the sweeping water pipe 501 and the sweeping nozzle, the residual scum is sent into the interior of the cleaning frame 604. The water flow will pass through the filter screen 605, while the scum will remain inside the cleaning frame 604. After use, the telescopic rod 603 can be controlled to raise the cleaning frame 604 to collect and clean the scum inside the cleaning frame 604.

[0030] Specifically, such as Figure 5 As shown, drive motor 504 is a forward and reverse motor. A forward and reverse motor is a motor that can achieve forward and reverse rotation. The working principle of a forward and reverse motor is based on changing the phase sequence of the motor power supply to change the direction of rotation. In a three-phase asynchronous motor, the direction of rotation of the motor can be changed by swapping any two phases. This operation is called commutation, which allows the motor to run in different directions as needed.

[0031] Specifically, such as Figure 5As shown, the main components of the electric slide rail 601 include a power supply, a motor, a driver, a controller, a transmission mechanism, and the slide rail itself, which consists of a track and a slider. Its working principle is as follows: the power supply provides electrical energy to the entire system; the motor, as the power source, rotates under the command of the controller via the driver; and the transmission mechanism converts the motor's rotational motion into the linear motion of the slider on the slide rail. Common transmission mechanisms include precision mechanical structures such as worm gears, lead screws, and nuts. During operation, the controller precisely controls the motor's speed, direction, and operating time according to a preset program or external signals, thereby driving the slider to slide smoothly and accurately on the track. This motion method has high precision and stability, meeting the linear motion requirements of various automated equipment and precision machinery. Furthermore, the electric slide rail 601 is equipped with limit devices and safety protection devices to ensure the slider moves within a specified range and can quickly stop in case of abnormalities, thus protecting the safety of the equipment and operators. At the same time, the maintenance and upkeep of the electric slide rail 601 are relatively simple; only regular inspection and lubrication are needed to ensure its long-term stable operation.

[0032] When implementing this procedure, please follow these steps:

[0033] 1) First, the backwashing process is carried out on the support layer 704 and filter media layer 705 inside the filter body 1 through the backwashing structure 7.

[0034] 2) Then, the scum generated during the backwashing process is sent into the interior of the drainage trough 2 and into the interior of the wastewater channel 3 through the first cleaning structure 5.

[0035] 3) The remaining scum on the water surface is then retrieved and collected separately using the second cleaning structure 6.

[0036] In summary, this ordinary rapid filter surface cleaning device, through the backwashing structure 7, performs a backwashing process on the inside of the filter. During the backwashing process, scum floats on the water surface. Then, through the first cleaning structure 5, water flow is generated by the cleaning water pipe 501 in conjunction with the cleaning nozzle, pushing the floating scum into the interior of the drainage trough 2. Then, the drive motor 504 is started to move the vertical rod 506 and the scraper 510, thereby scraping off the scum on the inner wall of the drainage trough 2 and sending it into the wastewater channel 3 along with the water flow. Then, the second cleaning structure 6 is set up to clean and pack the remaining scum, thereby facilitating the cleaning of scum during the backwashing process.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for surface scouring of a conventional rapid filter, comprising a filter body (1), characterized in that: The filter body (1) is fixedly installed with a drainage trough (2), the filter body (1) is fixedly installed with a wastewater channel (3) on the left side, the filter body (1) is fixedly installed with a top plate (4), the filter body (1) is provided with a first cleaning structure (5) on the outside, the filter body (1) is provided with a second cleaning structure (6) inside, and the filter body (1) is provided with a backwashing structure (7). The first cleaning structure (5) includes a sweeping water pipe (501). The sweeping water pipe (501) is fixedly installed inside the filter body (1). A T-shaped water pipe (502) is fixedly installed on the left side of the sweeping water pipe (501). A threaded rod (503) is rotatably connected inside the top plate (4). A drive motor (504) is fixedly installed on the right side of the threaded rod (503). A moving block (505) is threadedly connected to the outer surface of the threaded rod (503). A vertical rod (506) is fixedly installed at the bottom of the moving block (505). An extension sleeve (507) is fixedly installed inside the vertical rod (506). A spring body (508) is fixedly installed inside the extension sleeve (507). An extension rod (509) is fixedly installed at the end of the spring body (508). A scraper (510) is fixedly installed at the end of the extension rod (509).

2. A device for surface scouring of a conventional rapid filter according to claim 1, characterized in that: The second cleaning structure (6) includes an electric slide rail (601), the electric slide rail (601) is fixedly installed inside the top plate (4), a slide plate (602) is provided on the outer surface of the electric slide rail (601), a telescopic rod (603) is fixedly installed on the top of the slide plate (602), a cleaning frame (604) is fixedly installed at the output end of the telescopic rod (603), and a filter screen (605) is fixedly installed inside the cleaning frame (604).

3. A device for surface scouring of a conventional rapid filter according to claim 1, characterized in that: The backwashing structure (7) includes a water distribution main pipe (701), the bottom of the filter body (1) is fixedly installed with the water distribution main pipe (701), the outer surface of the water distribution main pipe (701) is fixedly installed with a water distribution branch pipe (702), the left side of the water distribution main pipe (701) is fixedly installed with a flushing water pipe (703), the top of the water distribution branch pipe (702) is provided with a support layer (704), and the top of the support layer (704) is provided with a filter media layer (705).

4. A device for surface scouring of a conventional rapid sand filter according to claim 1, characterized in that: The number of drainage troughs (2) is two. The inner left wall of the filter body (1) has two through holes. The inner front wall and inner rear wall of the filter body (1) are respectively fixedly installed with two sweeping water pipes (501). Sweeping nozzles are fixedly installed on the opposite side of the two sweeping water pipes (501). The top of the T-shaped water pipe (502) is fixedly connected to the left side of the two sweeping water pipes (501) respectively. The bottom of the T-shaped water pipe (502) is fixedly connected to the top of the flushing water pipe (703).

5. A device for surface scouring of a conventional rapid sand filter according to claim 1, characterized in that: There are two threaded rods (503). The outer surfaces of the two threaded rods (503) are fixedly mounted with pulleys. The two pulleys are connected by belt drive. The output end of the drive motor (504) is fixedly connected to the right side of one of the threaded rods (503). A vertical rod (506) is fixedly mounted at the bottom of each threaded rod (503).

6. A device for surface scouring of a conventional rapid sand filter according to claim 1, characterized in that: Each of the vertical rods (506) has four extension sleeves (507) fixedly installed on its front and rear sides respectively. Each extension sleeve (507) has a spring body (508) fixedly installed inside it. Each spring body (508) has an extension rod (509) fixedly installed at its end.

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