Water treatment plant pump backwashing and water supply pump-room-free system and manufacturing method thereof

Abstract

The invention discloses a water treatment plant pump backwash and water supply pump-room-free system and a manufacturing method thereof.The pump-room-free system comprises a filter tank, a clean water tank connected with the filter tank, a water supply pump and a backwash pump, the water supply pump and the backwash pump are installed at the top of the clean water tank, and the lower portions of the water supply pump and the backwash pump extend into the clean water tank; the water supply pump can convey water in the clean water tank to the water supply pipeline; and the backwashing pump is connected with the filter tank and can provide backwashing water during backwashing of the filter tank. The water supply pump and the backwash pump are directly mounted on the clean water tank, so that the high cost and expense of building a pump room and supporting facilities in a traditional water treatment plant are avoided, and meanwhile, building land for building the pump room is avoided; the purposes of saving land, saving huge investments of hoisting equipment such as a joist barrow track, a hoist and the like matched in a pump room, a plurality of pipe networks and the like, and saving energy, reducing consumption and the like in the real sense of operation, maintenance, repair and the like of a water treatment plant are achieved.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a water treatment plant pump backwashing and water supply system without a pump room and a manufacturing method thereof. Background Art

[0002] A typical water treatment plant is designed with a water supply pump house, which delivers the designed rated water volume to users in the pipeline network, and a backwash pump house, which provides backwash water for the water treatment plant's filter tanks and other process stages. The pump house is connected to the filter tank backwash system in front and to the clear water tank (which stores treated finished water) and the water supply network in the back. It represents the end of the water treatment process and the starting point of the water supply service. Therefore, the pump house is one of the core power hubs of the entire water supply system, responsible for key functions such as water transportation, pressure regulation, and system operation assurance. Its multiple pump groups work together to ensure the continuity of the water treatment process and the stability of the water supply service.

[0003] Among them, the filter is a key link in the water treatment process to remove impurities. The surface of the filter material (such as quartz sand, activated carbon) will intercept suspended matter and microorganisms. During backwashing, the dirt and sludge trapped in the filter layer of the filter material in the process of filtering water in the filter process section of the water treatment plant are discharged with the backwash water flow under the action of the water pump backwashing the filter layer and clean the filter layer, so as to restore the filter's function of continuously filtering and purifying water. The water in the clear water tank needs to be pressurized by the pump group to overcome the resistance of the pipe network and be transported to the user end. The water supply pump room needs to match the head (pressure) and flow rate according to the coverage of the pipe network (such as urban area and building height) to ensure that the end users (especially high-rise buildings) have sufficient water pressure.

[0004] Existing clear water tanks and pump houses are usually built adjacent to each other, with a spacing of no more than 30 meters. Furthermore, clear water tanks are usually buried underground or semi-underground, with a covered earth structure that can utilize soil insulation to reduce water temperature fluctuations and algae growth. The pump house is also a semi-underground structure, with a reinforced concrete raft or pile foundation, buried at a depth of ≥2 meters, to ensure structural stability and reduce the negative impact of vibration generated during pump operation. In addition, the suction well is integrated with the pump room, utilizing gravity to draw water. Therefore, the water supply pump house and backwash pump house occupy a large area and have high construction costs. Furthermore, long and complex pipelines are required between the backwash pump house and the filter tank, and between the water supply pump house and the clear water tank. This not only increases construction costs but also significantly increases water loss in the pipelines. The high operating power requirements of the pump units result in high energy consumption in the water plant. Summary of the Invention

[0005] The purpose of this application is to provide a water treatment plant pump backwash and water supply pump room-free system and its manufacturing method, which directly installs the water supply pump and backwash pump on the clear water tank, eliminating the high cost and expense of building a pump room and supporting facilities in traditional water treatment plants. At the same time, it eliminates the need for building land for pump rooms, thereby saving land and huge investments in supporting gantry tracks, hoists and other lifting equipment in the pump room, and numerous pipe networks, as well as the purpose of truly saving energy and reducing consumption in the operation, maintenance and repair of water treatment plants.

[0006] The present application discloses a pump backwashing and water supply system without a pump room in a water treatment plant, comprising a filter tank, a clean water tank connected to the filter tank, a water supply pump and a backwashing pump. The water supply pump and the backwashing pump are installed on the top of the clean water tank, the lower parts of the water supply pump and the backwashing pump extend into the clean water tank, and the upper parts are exposed at the top of the clean water tank. The exposed parts include a pump outlet and a motor. The water supply pump can transport water in the clean water tank to the water supply pipeline; the backwashing pump is connected to the filter tank and can provide backwashing water when the filter tank is backwashed.

[0007] Furthermore, a top plate is provided on the top of the clear water tank, the top plate is provided with perforations, a mounting plate is provided on the upper part of the water supply pump and the backwash pump, the water supply pump and the backwash pump are fixed on the top plate through the mounting plate, and the lower part of the water supply pump and the backwash pump extends into the clear water tank from the perforations of the top plate.

[0008] Furthermore, a mounting hole is reserved in the top plate, and the anchor bolt passes through the mounting plate and extends into the mounting hole. The mounting hole is then grout-sealed, and a gasket is placed on the head of the anchor bolt, which is then fastened with a fixing nut.

[0009] Furthermore, an elastic sealing material layer is provided between the mounting plate and the top plate, and the elastic sealing material layer includes an upper rubber waterstop and a lower damping layer.

[0010] Furthermore, the lower part of the water supply pump and the backwash pump is provided with a pump head, the pump head is located in the clean water tank, and the pump head is provided with a filter cover.

[0011] Furthermore, the distance between the pump head and the bottom of the clean water tank is greater than 0.5 times the diameter of the pump head.

[0012] Furthermore, the clean water tank is connected to the filter tank through an outlet pipe, the outlet pipe is provided with an outlet valve, and the backwash pump is connected to the filter tank through a water flushing pipe, and the water flushing pipe is provided with a backwash valve.

[0013] Furthermore, protective covers are provided outside the water supply pump and the backwash pump.

[0014] Furthermore, an expansion tank is provided for the clear water tank.

[0015] The present application also discloses a method for manufacturing a pump backwashing and water supply pump room-free system for a water treatment plant, comprising the following steps:

[0016] S1. Calculate the clear water tank capacity, which is 10-20% of the maximum daily water consumption. Based on this, set up an expansion tank for the clear water tank, increasing the water storage capacity by 1%-4% according to the scale;

[0017] S2. The clear water tank is made of reinforced concrete, with a reinforced concrete roof slab on top.

[0018] S3. The water supply pump and backwash pump are installed on the top plate, and the lower parts of the water supply pump and backwash pump extend into the clean water tank;

[0019] S4. The water supply pump is connected to the water supply pipeline, and the backwash pump is connected to the filter tank through the water flushing pipe.

[0020] Beneficial effects:

[0021] Installing the water supply pump and backwash pump directly on the clear water tank eliminates the high cost and expense of building a pump room and supporting facilities in traditional water treatment plants. At the same time, it eliminates the need for construction land for the pump room, thus saving both land and the huge investment in supporting lifting equipment such as gantry tracks, hoists, and numerous pipe networks in the pump room, as well as achieving the goal of truly saving energy and reducing consumption in the operation, maintenance, and repair of the water treatment plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. Hereinafter, some specific embodiments of the present application will be described in detail in an illustrative and non-limiting manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the pump backwash and water supply pump room-free system for the water treatment plant in this application;

[0024] Figure 2 This is a top view of the pump backwash and water supply system without a pump room in the water treatment plant under application;

[0025] Figure 3 for Figure 2 Sectional view in the AA direction;

[0026] Figure 4 for Figure 2 Cross-sectional view in the middle BB direction;

[0027] Figure 5 This is the installation diagram of the water supply pump and backwash pump for this application.

[0028] In the figure: reaction tank 1, sedimentation tank 2, filtration tank 3, clear water tank 4, water supply pump 5, backwash pump 6, top plate 7, pump outlet 8, motor 9, perforation 10, mounting plate 11, mounting hole 12, anchor bolt 13, gasket 14, fixing nut 15, pump head 16, filter cover 17, outlet pipe 18, outlet valve 19, water flushing pipe 20, backwash valve 21, protective cover 22, expansion tank 23. DETAILED DESCRIPTION

[0029] The following further describes the structure of the present invention or the technical terms used in the present invention. These descriptions are merely examples of how the present invention is implemented and do not constitute any limitation to the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "back," "left," and "right" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the indicated positions or components must have a specific orientation, be constructed, or operate in a specific orientation, and are therefore not to be construed as limitations of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0031] In the description of the present invention, unless otherwise specified or limited, the terms "connected" and "fixed" should be understood in a broad sense. For example, "fixed" can mean fixed connection, detachable connection, or integration; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] like Figure 1-5 As shown, this embodiment provides a water treatment plant pump backwash and water supply pump room-free system, including a filter tank 3, a clean water tank 4 connected to the filter tank 3, a water supply pump 5 and a backwash pump 6. The water supply pump 5 and the backwash pump 6 are installed on the top of the clean water tank 4. The lower parts of the water supply pump 5 and the backwash pump 6 extend into the clean water tank 4, and the upper parts are exposed at the top of the clean water tank 4. The exposed parts include a pump outlet 8 and a motor 9. The water supply pump 5 and the backwash pump 6 are long-axis pumps. The water supply pump 5 can transport water in the clean water tank 4 to the water supply pipeline; the backwash pump 6 is connected to the filter tank 3 and can provide backwash water when the filter tank 3 is backwashed.

[0033] The water supply pump 5 and the backwash pump 6 are directly installed on the clear water tank 4, and there is no need to build a separate pump room and supporting foundations, walls, roofs and other structures, which saves construction land and is particularly suitable for water plants with limited land. At the same time, it reduces the pump room building materials (rebar, concrete, waterproof materials, etc.) and construction costs; the water supply pump 5 and the backwash pump 6 draw water directly from the clear water tank 4. Compared with the conventional pump room (which requires laying a suction pipe to lead water from the clear water tank to the pump room), the suction pipeline is shortened, the pipeline investment and the head loss along the way are reduced, and the energy consumption is reduced. In addition, the backwash pump 6 and the water supply pump 5 are integrated in the clear water tank 4, and the pipeline network layout is more compact, achieving the purpose of energy saving and consumption reduction in the true sense in the operation, maintenance and repair of the water treatment plant.

[0034] Clean water tank 4 is a large "mass block + elastic body" system. The water within the tank can be considered a "liquid spring," and the reinforced concrete structure of the tank possesses a certain degree of inertia and damping. When vibrations are introduced from the water supply pump 5 and backwash pump 6, the water flow and slight deformations of the tank dissipate the vibration energy, acting like a "shock absorber," reducing the efficiency of vibration transmission and, in turn, the propagation of vibration to the surrounding environment, such as the factory floor and buildings. This indirectly reduces secondary noise caused by vibration, particularly the low-frequency hum caused by structural resonance.

[0035] The motors 9 of the water supply pump 5 and the backwash pump 6 are located outside the clean water tank 4 to prevent oil leakage from polluting the water quality in the clean water tank 4 and ensure the safety of water supply.

[0036] The water treatment plant includes a reaction tank 1, a sedimentation tank 2, a filter tank 3, and a clear water tank 4 connected in sequence. Raw water enters the reaction tank 1, undergoes flocculation in the reaction tank 1, sedimentation in the sedimentation tank 2, and filtration in the filter tank 3, and finally enters the clear water tank 4. The water supply pump 5 supplies water in the clear water tank 4 to users, and the backwash pump 6 uses the water in the clear water tank 4 as flushing water to backwash the filter tank 3. Figure 1 The clean water tank 4 can also be a water storage tank. The number of water supply pumps 5 and backwash pumps 6 can be set according to actual requirements.

[0037] As a specific example, Figure 5 As shown, a top plate 7 is provided on the top of the clean water tank 4, and the top plate 7 is provided with a through hole 10. A mounting plate 11 is provided on the upper part of the water supply pump 5 and the backwash pump 6. The water supply pump 5 and the backwash pump 6 are fixed on the top plate 7 through the mounting plate 11. The lower parts of the water supply pump 5 and the backwash pump 6 extend into the clean water tank 4 from the through hole 10 of the top plate 7.

[0038] As a specific example, Figure 5As shown, top plate 7 has a reserved mounting hole 12. Anchor bolts 13 extend through mounting plate 11 and into mounting hole 12. Holes 12 are then sealed with grouting. Gaskets 14 are placed around the heads of anchor bolts 13, and then secured with fixing nuts 15. Expansive cement is used as the grouting material. Its volume expansion during hardening allows it to completely fill mounting hole 12, reducing shrinkage cracks and ensuring full filling of mounting hole 12, minimizing hollowing and effectively preventing leakage. The number of anchor bolts 13 can be adjusted based on actual requirements.

[0039] As a specific embodiment, an elastic sealing material layer is disposed between the mounting plate 11 and the top plate 7. The elastic sealing material layer includes an upper rubber waterstop and a lower damping layer. The lower damping layer can be made of a material such as butyl, acrylate, or rubber, and serves to cut off the rigid vibration transmission path and reduce vibration of the water supply pump 5 and the backwash pump 6.

[0040] As a specific example, Figure 5 As shown, the lower part of the water supply pump 5 and the backwash pump 6 has a pump head 16, which is located in the clean water tank 4 and is provided with a filter cover 17. After the water supply pump 5 and the backwash pump 6 are installed in the clean water tank 4, they need to be debugged. The filter cover 17 can prevent the pump head 16 from being blocked by impurities such as leaves and garbage in the clean water tank 4 during debugging.

[0041] As a specific embodiment, the distance H between the pump head 16 and the bottom of the clean water tank 4 is greater than 0.5 times the diameter of the pump head 16, see Figure 5 Preferably, the distance between the pump head 16 and the bottom of the clean water tank 4 is 0.6 to 0.8 times the diameter of the pump head 16. The pump head 16 is located at the bottom of the clean water tank 4, below the lowest water level. This ensures that the pump head 16 is fully submerged in the clean water at low water levels, preventing the pump head 16 from running unloaded. Furthermore, it extends the immersion depth of the pump head 16 in the clean water tank 4, improving noise and vibration reduction.

[0042] As a specific example, Figure 1 As shown, the clean water tank 4 is connected to the filter tank 3 through an outlet pipe 18, and the outlet pipe 18 is provided with an outlet valve 19. The backwash pump 6 is connected to the filter tank 3 through a water flushing pipe 20, and the water flushing pipe 20 is provided with a backwash valve 21.

[0043] As a specific example, Figure 3 As shown, a protective cover 22 is provided outside the water supply pump 5 and the backwash pump 6. The protective cover 22 prevents the water supply pump 5 and the backwash pump 6 from being damaged by external factors such as sunlight, high temperature, rain, snow, people, etc. The protective cover 22 can be made of steel or non-steel.

[0044] As a specific example, Figure 2As shown, the clear water tank 4 is provided with an expansion tank 23. The clear water tank 4 increases the water storage capacity by 1% to 4% on the conventional design size by the expansion tank 23, further improving the noise reduction and vibration reduction effect of the clear water tank 4. For example, for a water plant with a daily supply of 30,000 tons, the basic volume of the clear water tank 4 is 3000m 3 After the addition of expansion pool 23, the capacity increased to 3300m 3 .

[0045] The working process of the water treatment plant pump backwash and water supply pump room-free system is as follows: the raw water enters the clear water tank 4 after flocculation, sedimentation and filtration. At this time, the backwash valve 21 is closed, the outlet valve 19 is opened, and the water supply pump 5 supplies water to the user; the outlet valve 19 is closed, the backwash valve 21 is opened, and the backwash pump 6 delivers flushing water to the filter tank 3 through the water flushing pipe 20 to backwash the filter material in the filter tank 3.

[0046] This embodiment also introduces a method for manufacturing a pump backwash and water supply system without a pump room in a water treatment plant. Manufacturing the above-mentioned pump room-free system includes the following steps:

[0047] S1 calculation of the water tank capacity 4, is the maximum daily water consumption of 10 to 20%, on this basis, the water tank 4 set expansion pool 23, according to the scale of the increase of 1% to 4% of the water storage capacity;

[0048] S2 clear water tank 4 is made of reinforced concrete, the clear water tank 4 is provided with a top plate made of reinforced concrete 7;

[0049] S3. The water supply pump 5 and the backwash pump 6 are mounted on the top plate 7, and the lower portion of the water supply pump 5 and the backwash pump 6 extends into the clean water tank 4;

[0050] S4. The water outlet 8 of the water supply pump 5 is connected to the water supply pipeline, and the water outlet 8 of the backwash pump 6 is connected to the filter tank 3 through the water flushing pipe 20.

[0051] The above description is only a partial specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application.

Claims

1. A pump backwash and water supply system without pump room in a water treatment plant, characterized in that: It includes a filter tank, a clean water tank connected to the filter tank, a water supply pump and a backwash pump. The water supply pump and the backwash pump are installed on the top of the clean water tank. The lower parts of the water supply pump and the backwash pump extend into the clean water tank, and the upper parts are exposed at the top of the clean water tank. The exposed parts include a pump outlet and a motor. The water supply pump can transport water in the clean water tank to the water supply pipeline; the backwash pump is connected to the filter tank and can provide backwash water when the filter tank is backwashed.

2. The water treatment plant pump backwashing and water supply pump room-free system according to claim 1, characterized in that: A top plate is provided on the top of the clear water tank, and the top plate is provided with perforations. A mounting plate is provided on the upper part of the water supply pump and the backwash pump. The water supply pump and the backwash pump are fixed on the top plate through the mounting plate. The lower part of the water supply pump and the backwash pump extends into the clear water tank from the perforations of the top plate.

3. The water treatment plant pump backwashing and water supply pump room-free system according to claim 2, characterized in that: The top plate is provided with mounting holes, the anchor bolts pass through the mounting plate and extend into the mounting holes, the mounting holes are then sealed with grouting, gaskets are placed on the heads of the anchor bolts, and then they are fastened with fixing nuts.

4. The water treatment plant pump backwashing and water supply pump room-free system according to claim 2, characterized in that: An elastic sealing material layer is arranged between the mounting plate and the top plate, and the elastic sealing material layer comprises an upper rubber waterstop and a lower damping layer.

5. The water treatment plant pump backwashing and water supply pump room-free system according to claim 1, characterized in that: The lower part of the water supply pump and the backwash pump is provided with a pump head, the pump head is located in the clean water tank, and the pump head is provided with a filter cover.

6. The water treatment plant pump backwashing and water supply pump room-free system according to claim 5, characterized in that: The distance between the pump head and the bottom of the clean water tank is greater than 0.5 times the diameter of the pump head.

7. The water treatment plant pump backwashing and water supply pump room-free system according to claim 1, characterized in that: The clean water tank is connected to the filter tank through an outlet pipe, the outlet pipe is provided with an outlet valve, and the backwash pump is connected to the filter tank through a water flushing pipe, and the water flushing pipe is provided with a backwash valve.

8. The water treatment plant pump backwashing and water supply pump room-free system according to claim 1, characterized in that: Protective covers are installed on the outside of the water supply pump and backwash pump.

9. The water treatment plant pump backwashing and water supply pump room-free system according to claim 1, characterized in that: An expansion tank is set up for the clear water tank.

10. A method for manufacturing a pump backwashing and water supply system without a pump room in a water treatment plant, characterized in that: Manufacturing the pump room-free system according to any one of claims 1 to 9 comprises the following steps: S1. Calculate the clear water tank capacity, which is 10-20% of the maximum daily water consumption. Based on this, set up an expansion tank for the clear water tank, increasing the water storage capacity by 1%-4% according to the scale; S2. The clear water tank is made of reinforced concrete, with a reinforced concrete roof slab on top. S3. The water supply pump and backwash pump are installed on the top plate, and the lower parts of the water supply pump and backwash pump extend into the clean water tank; S4. The water supply pump is connected to the water supply pipeline, and the backwash pump is connected to the filter tank through the water flushing pipe.

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