Novel shallow sand filtration modularized water distribution system

Abstract

The utility model discloses a novel shallow sand filtration modularized water distribution system which comprises a water collection and distribution module arranged below a filter screen at the bottom of a shallow filter, the water collection and distribution module comprises a middle pore plate, a plurality of uniformly distributed water passing holes are formed in the middle pore plate, and a square water passing pipe communicated with the water passing holes is fixedly arranged at the bottom of the middle pore plate. A plurality of square supporting pipes are fixedly arranged at the bottom of the middle pore plate at intervals, a grid plate assembly is fixedly arranged at the upper end of the middle pore plate through a pressing plate and comprises an upper-layer grid plate and a lower-layer grid plate, a metal filter screen is laid between the upper-layer grid plate and the lower-layer grid plate, and grids of the lower-layer grid plate correspond to the water passing holes one to one; compared with the prior art, the utility model has the advantages that the whole structure adopts the PVC square tube, compared with the traditional stainless steel welding or cylinder splicing, the PVC material is low in cost, the square tube connection mode is convenient to process, the size precision can be accurately controlled through die manufacturing, and the structural stability is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically to a novel shallow sand filtration modular water distribution system. Background Technology

[0002] In the field of environmental protection equipment, shallow sand filters are commonly used water treatment devices, and the performance of their water collection and distribution system directly affects the filtration effect and operating costs. Existing shallow sand filter water collection and distribution modules mostly adopt cylindrical splicing or stainless steel welded structures. This structure has significant shortcomings: firstly, the cylindrical splicing or welding process easily leads to dimensional deviations, causing a loss of effective filtration area and affecting the filter's treatment efficiency; secondly, stainless steel materials are expensive, and the welding process is complex and difficult to process, resulting in high overall equipment costs. Therefore, there is an urgent need for a new type of water collection and distribution system that is simple in structure, low in cost, and can ensure uniform water distribution. Utility Model Content

[0003] (I) Technical Issues

[0004] This invention provides a novel shallow sand filtration modular water distribution system, which aims to solve the problems mentioned in the background art.

[0005] (II) Technical Content

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a novel shallow sand filter modular water distribution system, including a water collection and distribution module arranged below the filter screen at the bottom of the shallow filter pool. The water collection and distribution module includes a central perforated plate with several evenly distributed water passage holes. A square water passage pipe communicating with the water passage holes is fixedly installed at the bottom of the central perforated plate. Several square support pipes are fixedly installed at intervals at the bottom of the central perforated plate. A grid plate assembly is fixedly installed at the upper end of the central perforated plate by a pressure plate. The grid plate assembly includes an upper grid plate and a lower grid plate. A metal filter screen is laid between the upper and lower grid plates. The squares of the lower grid plate correspond one-to-one with the water passage holes.

[0007] Furthermore, multiple pressure plates are provided, and the pressure plates are located above the upper grid plate and fixed to the bottom of the pool by expansion bolts.

[0008] Furthermore, the square support pipe is longer than the square water pipe, the square support pipe is in contact with the bottom of the pool, and the lower end of the square water pipe is suspended.

[0009] Furthermore, a water outlet is provided on the lower side wall of the square support pipe.

[0010] Furthermore, the adjacent square water pipes are tightly and securely connected.

[0011] Furthermore, both the square support pipe and the square water pipe are made of PVC material.

[0012] Furthermore, baffles are fixed around the central perforated plate to prevent backfill concrete from entering the grid plate assembly.

[0013] (III) Technical Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. The overall structure uses PVC square tubes (square water pipes and square support pipes). Compared with traditional stainless steel welding or cylindrical splicing, PVC material is cheaper, and the square tube connection method is easy to process. The mold making can accurately control the dimensional accuracy, and the structural stability is significantly improved.

[0016] 2. The diameter and spacing of the water passage holes on the middle perforated plate are consistent, and the squares of the lower grid plate correspond one-to-one with the water passage holes, ensuring that the filtration area radiated by each water passage hole is uniform, making the upper filter media layer flat, the water flow distribution uniform, and improving the filtration effect.

[0017] 3. The square support pipe is longer than the water pipe and its lower end is directly supported on the bottom of the pool, which enhances the overall support strength of the water collection and distribution module; the lower side wall of the support pipe has a water passage hole, which does not affect the flow of water and ensures the structural stability.

[0018] 4. All components are connected by standardized means such as fixing screws and pressure plates, making installation convenient and enabling modular assembly, which improves construction efficiency and reduces maintenance costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a novel shallow sand filtration modular water distribution system according to this utility model.

[0020] Figure 2 This is a schematic diagram of the main structure of a novel shallow sand filtration modular water distribution system according to this utility model.

[0021] Figure 3 This is a bottom view structural diagram of a novel shallow sand filtration modular water distribution system according to this utility model.

[0022] Figure 4 This is a left-side structural schematic diagram of a novel shallow sand filtration modular water distribution system according to this utility model.

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of a novel shallow sand filtration modular water distribution system according to this utility model. Figure 1 .

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of a novel shallow sand filtration modular water distribution system according to this utility model. Figure 2 .

[0025] Figure 7 This is a schematic diagram of the usage status of a novel shallow sand filtration modular water distribution system according to this utility model.

[0026] As shown in the figure: 1. Middle perforated plate; 2. Water passage hole; 3. Square water passage pipe; 4. Square support pipe; 5. Pressure plate; 6. Upper mesh plate; 7. Lower mesh plate; 8. Metal filter screen; 9. Expansion bolt; 10. Water outlet; 11. Baffle; 12. Pool bottom. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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 structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Combined with appendix Figure 1 To be continued Figure 7 A novel shallow sand filter modular water distribution system includes a water collection and distribution module arranged below the filter screen at the bottom of the shallow filter tank. The water collection and distribution module includes a central perforated plate 1 with several evenly distributed water passage holes 2. A square water passage pipe 3 communicating with the water passage holes 2 is fixedly installed at the bottom of the central perforated plate 1. Several square support pipes 4 are fixedly installed at intervals at the bottom of the central perforated plate 1. A grid plate assembly is fixedly installed at the upper end of the central perforated plate 1 by a pressure plate 5. The grid plate assembly includes an upper grid plate 6 and a lower grid plate 7. A metal filter screen 8 is laid between the upper grid plate 6 and the lower grid plate 7. The squares of the lower grid plate 7 correspond one-to-one with the water passage holes 2.

[0031] Multiple pressure plates 5 are provided, located above the upper grid plate 6 and fixed to the pool bottom by expansion bolts 9. The square support pipe 4 is longer than the square water passage pipe 3, the square support pipe 4 contacts the pool bottom, and the lower end of the square water passage pipe 3 is suspended. A water passage 10 is provided on the lower side wall of the square support pipe 4. Adjacent square water passage pipes 3 are tightly fixedly connected. Both the square support pipe 4 and the square water passage pipe 3 are made of PVC material.

[0032] The intermediate perforated plate 1 is fixedly provided with baffles 11 around its perimeter to prevent backfill concrete from entering the grid plate assembly. The upper grid plate 6 and the lower grid plate 7 are made by mold, which ensures the dimensions while also achieving a smooth surface, thereby reducing wear on the filter screen.

[0033] The working principle of this utility model is as follows: When this novel shallow sand filter modular water distribution system is working, the water to be treated enters the shallow filter tank from above, undergoes preliminary filtration through the metal filter screen 8, passes through the square grid of the lower mesh plate 7, and enters the corresponding water passage holes 2 on the middle perforated plate 1. Because the water passage holes 2 are evenly distributed, the water flow is uniformly dispersed. The water enters the square water passage pipe 3 and square support pipe 4 connected to it through the water passage holes 2, and the water flows within the square water passage pipe 3 and square support pipe 4. The square support pipe 4 is longer than the square water passage pipe 3, and its lower side wall has a water outlet 10. The water flow can pass through the water outlet 10 between and inside the square support pipe 4, and finally enters the bottom of the tank, completing the water distribution process. In this process, the square support pipe 4 not only supports the middle perforated plate 1 and the mesh plate assembly, but its fixed spacing design also ensures structural stability and does not affect the water flow. The pressure plate 5 is fixed to the bottom of the pool by expansion bolts 9, which tightly fixes the upper grid plate 6, metal filter screen 8 and lower grid plate 7 to prevent them from shaking and affecting the filtration effect. The baffles 11 around the middle perforated plate 1 can prevent backfill concrete from entering the grid plate assembly, avoid damage to the filter screen 8 and the grid plate, and ensure the normal operation of the equipment.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A novel shallow sand filtration modular water distribution system comprising a water distribution module arranged below the filter screen at the bottom of a shallow filter tank, characterized in that: The water collection and distribution module includes an intermediate perforated plate (1), on which several evenly distributed water passage holes (2) are provided. The bottom of the intermediate perforated plate (1) is fixedly provided with a square water passage pipe (3) communicating with the water passage holes (2). Several square support pipes (4) are fixedly provided at intervals at the bottom of the intermediate perforated plate (1). A grid plate assembly is fixedly provided at the upper end of the intermediate perforated plate (1) through a pressure plate (5). The grid plate assembly includes an upper grid plate (6) and a lower grid plate (7). A metal filter screen (8) is laid between the upper grid plate (6) and the lower grid plate (7). The squares of the lower grid plate (7) correspond one-to-one with the water passage holes (2).

2. A novel shallow sand filtration modular water distribution system as claimed in claim 1, wherein: Multiple pressure plates (5) are provided. The pressure plates (5) are located above the upper grid plate (6) and are fixed to the bottom of the pool by expansion bolts (9).

3. A novel shallow sand filtration modular water distribution system as claimed in claim 1, wherein: The square support pipe (4) is longer than the square water pipe (3), the square support pipe (4) is in contact with the bottom of the pool and the lower end of the square water pipe (3) is suspended.

4. A novel shallow sand filtration modular water distribution system as claimed in claim 3, wherein: The square support pipe (4) has a water outlet (10) on its lower side wall.

5. A novel shallow sand filtration modular water distribution system according to claim 1, characterized in that: The adjacent square water pipes (3) are tightly and fixedly connected.

6. A novel shallow sand filtration modular water distribution system as claimed in claim 1, wherein: Both the square support pipe (4) and the square water pipe (3) are made of PVC material.

7. A novel shallow sand filtration modular water distribution system as claimed in claim 1, wherein: The intermediate perforated plate (1) is fixedly provided with baffles (11) around its perimeter to prevent backfill concrete from entering the grid plate assembly.

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