A water distribution well with pre-settling function

Abstract

This invention provides a water distribution well with pre-sedimentation function, belonging to the technical field of water distribution wells in water purification plants. It solves the disadvantages of simultaneously constructing a pre-sedimentation tank and a water distribution well, such as large footprint and high construction costs. This invention includes a tank body with vertical and parallel first and second partition walls inside, which sequentially divide the tank's internal cavity into a sedimentation chamber, a water distribution chamber, and an outlet chamber. A water passage is provided in the middle of the first partition wall, and an overflow weir plate is provided at the top of the second partition wall. An inlet pipe is provided on the tank body, through which raw water enters the sedimentation chamber for initial sedimentation. After secondary sedimentation in the water distribution chamber, water is evenly distributed through the overflow weir plate and enters the outlet chamber. An outlet pipe is provided at the bottom of the outlet chamber for drainage. The advantage of this invention is that it combines sedimentation and water distribution functions, reducing the footprint and construction workload.

Description

Technical Field

[0001] This utility model belongs to the technical field of water distribution wells in water purification plants, and relates to a water distribution well with pre-settling function. Background Technology

[0002] Currently, most water treatment plants in my country use surface water as their source. Due to factors such as loose surface soil, rainfall, floods, and reservoir sediment discharge, the content of impurities such as sediment in the water source is prone to increase, resulting in high-turbidity raw water. When excessive impurities enter the water treatment system, it will lead to wear and tear on pump impellers and equipment, as well as siltation in pipes, channels, and structures, thus affecting the normal operation of water treatment structures. For high-turbidity raw water, pre-sedimentation tanks are typically used to remove larger particles such as sediment, floating matter, and ice chips.

[0003] Distribution wells are one of the most important structures in a water treatment plant, primarily responsible for the even distribution of incoming raw water. To ensure reliable water supply and ease of maintenance, water treatment plants typically employ multiple sets or sections of these structures in parallel. To maintain balanced operation across these structures, distribution wells are needed to distribute the incoming water evenly. Distribution wells play a crucial role in balancing the operating load of each treatment structure and ensuring its economical and efficient operation.

[0004] For the aforementioned water treatment plants, it is usually necessary to construct both a pre-sedimentation tank and a distribution well to meet the needs of sedimentation and water distribution. However, this approach has disadvantages such as a large footprint and high construction costs. If the distribution well is designed to simultaneously fulfill the functions of water distribution and pre-sedimentation, the footprint of the structures can be minimized and construction costs reduced while ensuring the quality of the effluent. Utility Model Content

[0005] The purpose of this utility model is to provide a water distribution well with a pre-settling function, which aims to solve the problems of large land area and high construction cost when the pre-settling tank and water distribution well are built separately.

[0006] The objective of this utility model can be achieved through the following technical solutions: A water distribution well with pre-settling function includes a pool body, characterized in that the pool body is provided with two vertical and parallel partition walls, which divide the inner cavity of the pool body into three independent chambers, namely a sedimentation chamber, a water distribution chamber, and a water outlet chamber, with the water distribution chamber located between the sedimentation chamber and the water outlet chamber; the partition wall between the sedimentation chamber and the water distribution chamber is a first partition wall, and the partition wall between the water distribution chamber and the water outlet chamber is a second partition wall; the first partition wall has a water passage hole in the middle, and the second partition wall has an overflow weir plate at the top; The pool body is equipped with an inlet pipe. Raw water enters the sedimentation chamber through the inlet pipe and undergoes initial sedimentation in the sedimentation chamber. After secondary sedimentation in the water distribution chamber, the water is evenly distributed through the overflow weir plate and enters the outlet chamber. The bottom of the outlet chamber is equipped with an outlet pipe through which the water is discharged.

[0007] In the aforementioned water distribution well with pre-settling function, an overflow pipe is also provided at the upper part of the pool. When the water level in the water distribution chamber is higher than the overflow weir plate, the water in the water distribution chamber is discharged through the overflow pipe.

[0008] In the aforementioned water distribution well with pre-settling function, the bottom of the sedimentation chamber, water distribution chamber, and water outlet chamber are all equipped with sand flushing pipes, which are used to discharge the silt accumulated at the bottom of the water distribution well.

[0009] In the aforementioned water distribution well with pre-settling function, a vertical inner partition wall is provided inside the water outlet chamber. This inner partition wall divides the inner cavity of the water outlet chamber into two independent chambers for storing the raw water distributed by the water distribution chamber. The height of the inner partition wall is consistent with that of the water distribution well.

[0010] In the aforementioned water distribution well with pre-settling function, there are two overflow weir plates at the top of the second partition wall, both of the same length. The raw water in the water distribution chamber is evenly distributed to the two chambers of the outlet chamber through the two overflow weir plates. There are two outlet pipes, located at the bottom of the two chambers of the outlet chamber respectively.

[0011] In the aforementioned water distribution well with pre-settling function, the first partition wall and the second partition wall have different heights and are both lower than the height of the pool body; the height of the first partition wall is higher than the height of the second partition wall. The height of the first partition wall is 0.20m above the water level in the sedimentation chamber.

[0012] In the aforementioned water distribution well with pre-settling function, a reducer is provided at the top of the overflow pipe, and the top elevation of the reducer is 0.25m higher than the water level in the water distribution chamber.

[0013] In the aforementioned water distribution well with pre-sedimentation function, a recovery water pipe is also provided inside the sedimentation chamber. The recovery water pipe is used to recycle wastewater.

[0014] In the aforementioned water distribution well with pre-settling function, the top of the inlet pipe is lower than the water level in the sedimentation chamber, and a switch valve is provided on the inlet pipe to control the opening and closing of the inlet pipe.

[0015] In the aforementioned water distribution well with pre-settling function, a water collection pit is provided at the bottom of the sedimentation chamber, water distribution chamber, and water outlet chamber. The bottom of the pool slopes towards the water collection pit at a 1% gradient.

[0016] In the aforementioned water distribution well with pre-settling function, the sand flushing pipe is connected to the water collection pit, and a switch valve is provided on the sand flushing pipe to control the opening and closing of the sand flushing pipe.

[0017] In the aforementioned water distribution well with pre-settling function, the water distribution well also includes a valve well, which is located on both sides of the pool body, and the switch valve on the sand flushing pipe is installed in the valve well.

[0018] In the aforementioned water distribution well with pre-settling function, waterproof sleeves are provided at the connections between the inlet pipe, outlet pipe, overflow pipe, sand flushing pipe, reclaimed water pipe and the pool body and valve well.

[0019] In the aforementioned water distribution well with pre-settling function, a patrol platform and stairs are provided on the top of the pool, and guardrails are installed on both sides of the patrol platform and stairs. The patrol platform and stairs are used for daily inspection, maintenance, and repair.

[0020] In the aforementioned water distribution well with pre-settling function, maintenance steps are provided in the sedimentation chamber, water distribution chamber, and water outlet chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) Pre-sedimentation of silt and impurities: The raw water containing silt and impurities is initially settled in the sedimentation chamber and then evenly distributed in the water distribution chamber to prevent silt and impurities from entering the subsequent treatment system, wearing down the pump impeller and equipment, and silting up the pipes and structures, thus ensuring the normal operation of the subsequent structures. (2) Uniform water distribution: The water distribution wells distribute the raw water evenly to each group of structures, ensuring the balanced operation of each group of structures. (3) Less land occupation and less investment: The water distribution well has both sedimentation and water distribution functions. Compared with the traditional method of building a pre-sedimentation tank and water distribution well at the same time, it reduces the land occupation of the structure and the amount of construction work, thereby reducing investment. (4) When the turbidity of the raw water intake is normal, the water distribution well can also have the comprehensive functions of water storage and regulation. Attached Figure Description

[0022] Figure 1 This is a top view of the water distribution well of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the sedimentation chamber of this utility model; Figure 4 This is a cross-sectional view of the water distribution chamber of this utility model; Figure 5 This is a cross-sectional view of the water outlet cavity of this utility model.

[0023] In the diagram, 1. Sedimentation chamber; 2. Water distribution chamber; 3. Water outlet chamber; 4. First partition wall; 5. Water passage hole; 6. Second partition wall; 7. Overflow weir plate; 8. Inlet pipe; 9. Outlet pipe; 10. Overflow pipe; 11. Reducer; 12. Sand flushing pipe; 13. Inner partition wall; 14. Recycled water pipe; 15. Sump; 16. Inspection platform; 17. Guardrail; 19. Valve well; 20. Switch valve. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figures 1 to 5 As shown, the water distribution well with pre-settling function of this utility model includes a pool body. The pool body is provided with two vertical and parallel partition walls, which divide the inner cavity of the pool body into three independent chambers, namely a sedimentation chamber 1, a water distribution chamber 2, and a water outlet chamber 3. The water distribution chamber 2 is located between the sedimentation chamber 1 and the water outlet chamber 3. The partition wall between the sedimentation chamber 1 and the water distribution chamber 2 is a first partition wall 4, and the partition wall between the water distribution chamber 2 and the water outlet chamber 3 is a second partition wall 6. A water passage hole 5 is opened in the middle of the first partition wall 4, and a stainless steel overflow weir plate 7 is provided on the upper part of the second partition wall 6.

[0026] Figures 1 to 5 The direction of the arrow indicates the direction of water flow. The pool body is equipped with an inlet pipe 8, through which raw water enters the sedimentation chamber 1 for initial sedimentation. The water then flows through the aforementioned water passage 5 into the distribution chamber 2, where it undergoes secondary sedimentation. Finally, it is evenly distributed through the overflow weir plate 7 and enters the outlet chamber 3. An outlet pipe 9 is located at the bottom of the outlet chamber 3, through which water is discharged. An overflow pipe 10 is also provided at the top of the pool body. When the water level in the distribution chamber 2 is higher than the overflow weir plate 7, the water in the distribution chamber 2 is discharged through the overflow pipe 10. The overflow pipe 10 serves as an emergency channel to prevent overloading of the distribution chamber during heavy rain or when the raw water has high turbidity, thus protecting subsequent processes. A sand flushing pipe 12 is installed at the bottom of the sedimentation chamber 1, distribution chamber 2, and outlet chamber 3 to flush out silt accumulated at the bottom of the distribution chamber. A recovery water pipe 14 is also installed in the sedimentation chamber 1. The recovery water pipe 14 is used to recycle wastewater.

[0027] The outlet chamber 3 is equipped with a vertical inner partition wall 13, which divides the interior of the outlet chamber 3 into two independent chambers for storing the raw water distributed by the distribution chamber 2. The inner partition wall 13 is at the same height as the distribution well. The upper part of the second partition wall 6 has two overflow weir plates 7 of the same length. The raw water in the distribution chamber 2 is evenly distributed to the two chambers of the outlet chamber 3 through the two overflow weir plates 7. There are two outlet pipes 9, located at the bottom of the two chambers of the outlet chamber 3 respectively.

[0028] like Figure 2 As shown, the first partition wall 4 and the second partition wall 6 have different heights and are both lower than the height of the pool body; the height of the first partition wall 4 is higher than the height of the second partition wall 6. The height of the first partition wall 4 is 0.20m higher than the water level in the sedimentation chamber 1. The top of the overflow pipe 10 is provided with a reducer 11, and the top elevation of the reducer 11 is 0.25m higher than the water level in the water distribution chamber 2.

[0029] like Figure 1 As shown, the bottom of the sedimentation chamber 1, water distribution chamber 2, and water outlet chamber 3 are all equipped with a water collection pit 15. The bottom of the pool slopes towards the water collection pit 15 at a 1% gradient. The sand flushing pipe 12 is connected to the water collection pit 15, and a switch valve 20 is provided on the sand flushing pipe 12 to control its opening and closing. The water distribution well also includes a valve well 19, which is located on both sides of the pool body. The switch valve 20 on the sand flushing pipe 12 is located inside the valve well 19. The top of the inlet pipe 8 is lower than the water level in the sedimentation chamber 1, and a switch valve 20 is provided on the inlet pipe 8 to control its opening and closing. Waterproof sleeves are provided at the connections between the inlet pipe 8, water outlet pipe 9, overflow pipe 10, sand flushing pipe 12, and reclaimed water pipe and the pool body and valve well 19. The switch valve 20 includes a manual gate valve and a rubber expansion joint.

[0030] The top of the pool is equipped with an inspection platform 16 and a staircase, both of which are fitted with guardrails 17. The inspection platform 16 and the staircase are used for daily inspection, maintenance, and repair, facilitating the observation of water levels, removal of debris, and equipment maintenance. The sedimentation chamber 1, water distribution chamber 2, and water outlet chamber 3 are all equipped with maintenance steps, allowing personnel to easily access the bottom of the pool to inspect the sand flushing pipes or remove silt.

[0031] This invention features a three-stage chamber tiered processing design: Sedimentation chamber: The design of the inlet pipe being lower than the water level (submerged inlet) reduces water flow disturbance and effectively removes large particles of impurities in conjunction with the initial sedimentation; the addition of a recycling pipe enables wastewater recycling and improves resource utilization.

[0032] Water distribution chamber: The water passage hole of the first partition wall is located in the middle to avoid short flow and promote the uniform rise of water flow; the secondary sedimentation further removes suspended solids and reduces the load on the subsequent overflow weir.

[0033] Water outlet chamber: The double overflow weir plate + internal partition wall design ensures that the water volume is evenly distributed to two independent chambers, avoids flow deviation, and ensures water outlet stability.

[0034] This invention utilizes a height difference design between the first and second partition walls to create a stepped water flow. The sedimentation-distribution-discharge process is achieved through gravity flow, requiring no additional power. The overflow weir and reducer (0.25m above the distribution chamber water level) provide dual water level control, ensuring uniform water distribution while preventing abnormal drainage from the overflow pipe due to excessively high water levels.

[0035] This utility model features a sludge removal and anti-siltation design: a sump with a 1% slope: the inclined bottom of the pool guides the sludge to slide naturally into the sump, and the flushing pipe removes sludge periodically (centralized control via valve well for easy operation). Separate chamber flushing pipes: each chamber removes sludge independently, avoiding cross-contamination, making it particularly suitable for high-turbidity raw water conditions.

[0036] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A water distribution well with pre-settling function, comprising a pool body, characterized in that, The pool body is provided with two vertical and parallel partition walls, which divide the pool body into three independent chambers: sedimentation chamber (1), water distribution chamber (2), and water outlet chamber (3). The water distribution chamber (2) is located between the sedimentation chamber (1) and the water outlet chamber (3). The partition wall between the sedimentation chamber (1) and the water distribution chamber (2) is the first partition wall (4), and the partition wall between the water distribution chamber (2) and the water outlet chamber (3) is the second partition wall (6). The first partition wall (4) has a water passage hole (5) in the middle, and the second partition wall (6) has an overflow weir plate (7) at the top. The pool body is provided with an inlet pipe (8). Raw water enters the sedimentation chamber (1) through the inlet pipe (8) and undergoes initial sedimentation in the sedimentation chamber (1). It then enters the water distribution chamber (2) through the above-mentioned water passage (5). After secondary sedimentation in the water distribution chamber (2), the water is evenly distributed through the above-mentioned overflow weir plate (7) and enters the water outlet chamber (3). The bottom of the water outlet chamber (3) is provided with an outlet pipe (9), and the water in the water outlet chamber (3) is discharged through the outlet pipe (9).

2. A water distribution well with pre-settling function according to claim 1, characterized in that, The upper part of the pool is also provided with an overflow pipe (10). When the water level in the water distribution chamber (2) is higher than the overflow weir plate (7), the water in the water distribution chamber (2) is discharged through the overflow pipe (10).

3. A water distribution well with pre-settling function according to claim 1, characterized in that, The bottom of the sedimentation chamber (1), water distribution chamber (2), and water outlet chamber (3) are all equipped with sand flushing pipes (12), which are used to discharge the silt accumulated at the bottom of the water distribution well.

4. A water distribution well with pre-settling function according to claim 1, characterized in that, The water outlet cavity (3) is provided with a vertical inner partition wall (13), which divides the inner cavity of the water outlet cavity (3) into two independent chambers for storing the raw water distributed by the water distribution cavity (2). The height of the inner partition wall (13) is consistent with that of the water distribution well.

5. A water distribution well with pre-settling function according to claim 1, characterized in that, The upper part of the second partition wall (6) has two overflow weir plates (7) with the same length. The raw water in the water distribution chamber (2) is evenly distributed to the two chambers of the water outlet chamber (3) through the two overflow weir plates (7). There are two water outlet pipes (9), which are located at the bottom of the two chambers of the water outlet chamber (3).

6. A water distribution well with pre-settling function according to claim 1, characterized in that, The first partition wall (4) and the second partition wall (6) have different heights and are both lower than the height of the pool; the first partition wall (4) is higher than the second partition wall (6).

7. A water distribution well with pre-settling function according to claim 1, characterized in that, The sedimentation chamber (1) is also equipped with a water recovery pipe (14).

8. A water distribution well with pre-settling function according to claim 3, characterized in that, The bottom of the sedimentation chamber (1), water distribution chamber (2), and water outlet chamber (3) are all provided with water collection pits (15).

9. A water distribution well with pre-settling function according to claim 8, characterized in that, The flushing pipe (12) is connected to the water collection pit (15), and the flushing pipe (12) is equipped with a switch valve (20) to control the opening and closing of the flushing pipe (12).

10. A water distribution well with pre-settling function according to claim 9, characterized in that, The water distribution well also includes a valve well (19), which is located on both sides of the pool body. The switch valve (20) on the sand flushing pipe (12) is installed in the valve well (19).

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