Quartz sand filter with automatic backwashing function

Abstract

The utility model discloses a quartz sand filter with an automatic backwashing function, which comprises three filter tanks and three movable covers, four separation nets are arranged in each filter tank, and the filter tanks and the movable covers are arranged in parallel. Rubber rings are fixedly mounted on the upper surface of the filtering tank and the lower surface of the movable cover, a lifting frame is movably connected between the upper end of the filtering tank and the movable cover, and a supporting frame is fixedly mounted at the lower end of the filtering tank. According to the quartz sand filter with the automatic backwashing function, gravels with different thicknesses are layered through the separation net, the gravels with different thicknesses are not easy to mix together in the backwashing process, the use of the gravels is not influenced, the replacement of quartz sand is facilitated, and the production efficiency is improved. A rubber ring and a telescopic pipe are matched with a lifting frame, so that the quartz sand filter can be automatically opened and closed, and the interior of the quartz sand filter is favorably maintained.

Description

Technical Field

[0001] This utility model relates to the technical field of quartz sand filter structure, and in particular to a quartz sand filter with automatic backwashing function. Background Technology

[0002] Quartz sand filters are a common type of water treatment equipment, mainly used to remove suspended solids, colloids, organic matter and other impurities from water. Quartz sand filters use quartz sand as filter media, utilizing the gaps between its particles to trap impurities in the water. Due to its unique physical and chemical properties, quartz sand plays an irreplaceable role in the water treatment process. It has high hardness and wear resistance, can withstand large water flow impacts and friction, and is not easily broken or worn, thus ensuring a stable filtration effect over a long period of time.

[0003] Quartz sand filters with automatic backwashing function use quartz sand as filter media. The gaps between the particles trap suspended solids, organic matter, and other impurities in the water, thus purifying the water. Its most significant feature is its automatic backwashing function. This function automatically initiates the backwashing process after the filter has been operating for a period of time, using reverse water flow to flush the filter media layer, removing impurities trapped on the media and restoring the filter's filtration capacity, preventing filter failure due to clogging. In existing quartz sand filters, the reverse water flow is used to flush the quartz sand, and the tank cannot be opened for maintenance. Several problems arise when flushing the quartz sand and maintaining the tank: firstly, quartz sand of different coarsenesses easily mix during repeated flushing, making it difficult to remove the quartz sand from the tank and facilitating replacement; secondly, the filter tank cannot be opened, making internal maintenance inconvenient. Utility Model Content

[0004] The main purpose of this invention is to provide a quartz sand filter with an automatic backwashing function, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quartz sand filter with automatic backwashing function includes filter tanks and movable covers. Three filter tanks and movable covers are provided. Four isolation nets are provided inside each filter tank. Rubber rings are fixedly installed on the upper surface of the filter tank and the lower surface of the movable cover. A lifting frame is movably connected between the upper end of the filter tank and the movable cover. A support frame is fixedly installed at the lower end of the filter tank. A maintenance port is fixedly installed near the edge of the upper surface of the movable cover. A water outlet pipe is bolted between the water outlets of the filter tank. A connecting flange is bolted to the water inlet of the movable cover. A telescopic pipe is fixedly connected to the upper end of the connecting flange. A water inlet pipe is fixedly connected to the upper end of the telescopic pipe, and an air inlet pipe is fixedly connected to the lower end of the water inlet pipe.

[0007] Preferably, the isolation net includes a circular mesh frame, a rubber ring, a lifting strap, and a filter screen.

[0008] Preferably, the filter tank is provided with a circular mesh frame inside, and the number of circular mesh frames inside the filter tank is four.

[0009] Preferably, the rubber ring is fixedly installed in the annular groove on the outside of the circular mesh frame, the lifting strap is fixedly installed on the upper surface of the circular mesh frame, the filter screen is fixedly installed inside the circular mesh frame at the lower end, and there are two lifting straps on the upper surface of the circular mesh frame.

[0010] Preferably, the lifting frame includes a motor frame, a connecting plate, a screw, an electric motor, a first plate, an L-shaped plate, and a second plate.

[0011] Preferably, the motor outer frame is fixedly installed between the movable covers, the connecting plate is fixedly installed between the upper ends of the filter tank, the screw is located in the threaded through hole of the connecting plate, and the lower end of the electric motor rotating shaft is fixedly connected to the upper end of the screw.

[0012] Preferably, the first plate is fixedly installed on the outside of the movable cover, the L-shaped plate is fixedly installed on the lower surface of the first plate, the second plate is fixedly installed on the outside of the filter tank near the upper end, and the lower end of the L-shaped plate is inserted into the rectangular through hole of the second plate.

[0013] This utility model uses an isolation net to separate different coarse and fine sand into layers, making it less likely for the sand of different coarse and fine sizes to mix together during backwashing, thus not affecting the use of the sand and making it easier to replace the quartz sand.

[0014] The rubber rings, lifting frame, and telescopic tubes allow the quartz sand filter to open and close automatically, facilitating internal maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a quartz sand filter with automatic backwashing function according to the present invention;

[0016] Figure 2 This is an exploded schematic diagram of the isolation mesh structure of a quartz sand filter with automatic backwashing function according to the present invention.

[0017] Figure 3 This is an exploded schematic diagram of the lifting frame structure of a quartz sand filter with automatic backwashing function according to the present invention.

[0018] Figure 4 This is a schematic diagram of the connecting flange, telescopic pipe, water inlet pipe and air inlet pipe of a quartz sand filter with automatic backwashing function according to this utility model.

[0019] Figure 5 This utility model relates to a quartz sand filter with an automatic backwashing function. Figure 1 Enlarged diagram of part A in the middle.

[0020] In the diagram: 1. Filter tank; 2. Movable cover; 3. Isolation net; 301. Circular mesh frame; 302. Rubber ring; 303. Lifting strap; 304. Filter screen; 4. Rubber ring; 5. Lifting frame; 501. Motor outer frame; 502. Connecting plate; 503. Screw; 504. Electric motor; 505. Plate No. 1; 506. L-shaped plate; 507. Plate No. 2; 6. Maintenance port; 7. Support frame; 8. Water outlet pipe; 9. Connecting flange; 10. Telescopic pipe; 11. Water inlet pipe; 12. Air inlet pipe. Detailed Implementation

[0021] 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.

[0022] like Figure 1-5As shown, a quartz sand filter with automatic backwashing function includes a filter tank 1 and a movable cover 2. There are three filter tanks 1 and three movable covers 2. The filter tank 1 is equipped with an isolation net 3 inside. There are four isolation nets 3 inside the filter tank 1. A rubber ring 4 is fixedly installed on the upper surface of the filter tank 1 and the lower surface of the movable cover 2. A lifting frame 5 is movably connected between the upper end of the filter tank 1 and the movable cover 2. A support frame 7 is fixedly installed on the lower end of the filter tank 1. A maintenance port 6 is fixedly installed on the upper surface of the movable cover 2 near the edge. A water outlet pipe 8 is fixedly installed between the water outlets of the filter tank 1 by bolts. A connecting flange 9 is fixedly installed on the water inlet of the movable cover 2 by bolts. A telescopic pipe 10 is fixedly connected to the upper end of the connecting flange 9. A water inlet pipe 11 is fixedly connected to the upper end of the telescopic pipe 10. An air inlet pipe 12 is fixedly connected to the lower end of the water inlet pipe 11. The water inlet pipe 11 is connected to the water inlet pipe. The air inlet pipe 12 is connected to the air inlet pipe. The water outlet pipe 8 is connected to the filtered sewage conveying pipe.

[0023] In this embodiment, the isolation net 3 includes a circular mesh frame 301, a rubber ring 302, an upper lifting strap 303, and a filter screen 304.

[0024] In this embodiment, the filter tank 1 is provided with a circular mesh frame 301 inside, and there are four circular mesh frames 301 inside the filter tank 1.

[0025] In this embodiment, the rubber ring 302 is fixedly installed in the annular groove on the outside of the circular mesh frame 301, the lifting strap 303 is fixedly installed on the upper surface of the circular mesh frame 301, and the filter screen 304 is fixedly installed inside the circular mesh frame 301 at the lower end. There are two lifting straps 303 on the upper surface of the circular mesh frame 301. Different activated carbon and different coarse and fine gravel are laid on the upper surface of the isolation net 3. When the gravel needs to be replaced, the lifting strap 303 is hooked and the circular mesh frame 301 is pulled up, and it is pulled out of the filter tank 1 through the filter screen 304. The rubber ring 302 plays a sealing role. The isolation net 3 makes the different coarse and fine gravel separate into layers. The different coarse and fine gravel are not easy to mix together during the backwashing process, which does not affect the use of the gravel and is conducive to the replacement of quartz sand.

[0026] In this embodiment, the lifting frame 5 includes a motor outer frame 501, a connecting plate 502, a screw 503, an electric motor 504, a first plate 505, an L-shaped plate 506, and a second plate 507.

[0027] In this embodiment, the motor outer frame 501 is fixedly installed between the movable cover 2, the connecting plate 502 is fixedly installed between the upper ends of the filter tank 1, the screw 503 is provided in the threaded through hole of the connecting plate 502, and the lower end of the rotating shaft of the electric motor 504 is fixedly connected to the upper end of the screw 503.

[0028] In this embodiment, plate 505 is fixedly installed on the outside of movable cover 2, L-shaped plate 506 is fixedly installed on the lower surface of plate 505, and plate 507 is fixedly installed on the outside of filter tank 1 near the upper end. The lower end of L-shaped plate 506 is inserted into the rectangular through hole of plate 507. When movable cover 2 is raised or lowered, electric motor 504 drives screw 503 to rotate. Screw 503 rotates in the threaded through hole of connecting plate 502, and motor frame 501 rises or falls accordingly. L-shaped plate 506 slides in the rectangular through hole of plate 507, and movable cover 2 rises or falls accordingly. During the raising or lowering of movable cover 2, telescopic tube 10 extends or retracts accordingly. Rubber ring 4 seals the gap between the upper surface of filter tank 1 and the lower surface of movable cover 2. Rubber ring 4 and telescopic tube 10, together with lifting frame 5, enable the quartz sand filter to open and close automatically, which is beneficial for the maintenance of the inside of the quartz sand filter.

[0029] The scope of protection of this utility model is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this utility model.

Claims

1. A quartz sand filter with automatic backwashing function, characterized in that: The filter includes a filter tank (1) and a movable cover (2). There are three filter tanks (1) and three movable covers (2). There is an isolation net (3) inside the filter tank (1). There are four isolation nets (3) inside the filter tank (1). A rubber ring (4) is fixedly installed on the upper surface of the filter tank (1) and the lower surface of the movable cover (2). A lifting frame (5) is movably connected between the upper end of the filter tank (1) and the movable cover (2). A support frame (7) is fixedly installed at the lower end of the filter tank (1). A maintenance port (6) is fixedly installed near the edge of the upper surface of the movable cover (2). A water outlet pipe (8) is fixedly installed between the water outlets of the filter tank (1) by bolts. A connecting flange (9) is fixedly installed at the water inlet of the movable cover (2) by bolts. A telescopic pipe (10) is fixedly connected to the upper end of the connecting flange (9). A water inlet pipe (11) is fixedly connected to the upper end of the telescopic pipe (10). An air inlet pipe (12) is fixedly connected to the lower end of the water inlet pipe (11).

2. A quartz sand filter with automatic backwashing function according to claim 1, characterized in that: The isolation net (3) includes a circular mesh frame (301), a rubber ring (302), an upper lifting strap (303), and a filter screen (304).

3. A quartz sand filter with automatic backwashing function according to claim 2, characterized in that: The filter tank (1) is provided with a circular mesh frame (301) inside, and there are four circular mesh frames (301) inside the filter tank (1).

4. A quartz sand filter with automatic backwashing function according to claim 3, characterized in that: The rubber ring (302) is fixedly installed in the annular groove on the outside of the circular mesh frame (301), the lifting strap (303) is fixedly installed on the upper surface of the circular mesh frame (301), and the filter screen (304) is fixedly installed inside the circular mesh frame (301) at the lower end. There are two lifting straps (303) on the upper surface of the circular mesh frame (301).

5. A quartz sand filter with automatic backwashing function according to claim 4, characterized in that: The lifting frame (5) includes a motor outer frame (501), a connecting plate (502), a screw (503), an electric motor (504), a first plate (505), an L-shaped plate (506), and a second plate (507).

6. A quartz sand filter with automatic backwashing function according to claim 5, characterized in that: The motor outer frame (501) is fixedly installed between the movable cover (2), the connecting plate (502) is fixedly installed between the upper ends of the filter tank (1), the screw (503) is located in the threaded through hole of the connecting plate (502), and the lower end of the rotating shaft of the electric motor (504) is fixedly connected to the upper end of the screw (503).

7. A quartz sand filter with automatic backwashing function according to claim 6, characterized in that: The first plate (505) is fixedly installed on the outside of the movable cover (2), the L-shaped plate (506) is fixedly installed on the lower surface of the first plate (505), the second plate (507) is fixedly installed on the outside of the filter tank (1) near the upper end, and the lower end of the L-shaped plate (506) is inserted into the rectangular through hole of the second plate (507).

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