Raw water purification treatment system and working method thereof

Abstract

The invention discloses a raw water purification treatment system and a working method thereof, and solves the problem of how to design water treatment equipment which is simple in structure and small in occupied area. Comprising a raw water storage tank (1), the raw water storage tank (1) is connected with a water guide pipe (2), the other end of the water guide pipe (2) is connected with a water collecting pipe (8), the water collecting pipe (8) is connected with a cyclone separation device used for clarifying raw water, and the water guide pipe (2) is sequentially connected with a water outlet valve (3), a booster pump (4), a pressure gauge (5), a pump valve (6) and a pipeline mixer (7) in series. A coagulant filling pipe (9) is arranged on the water guide pipe (2) between the water outlet valve (3) and the booster pump (4); a coagulant aid filling pipe (10) is arranged at a water inlet of the pipeline mixer (7); the process of raw water dosing clarification is simplified, a clarification tank is replaced, and the site space and the construction cost of the clarification tank are saved.

Description

Technical Field

[0001] The invention relates to a raw water treatment system, in particular to a raw water purification treatment system. Background Art

[0002] Raw water generally refers to water collected from nature, including groundwater, spring water, reservoir water and other natural water sources in nature, which have not undergone any artificial purification treatment; when the water treatment system takes surface water or shallow groundwater as the water source, the water contains a large amount of suspended matter, sediment and colloid substances, and the raw water needs to be pretreated. Generally, a clarification tank is used for pretreatment with drug addition and precipitation. However, the clarification tank has a complex structure, high cost and occupies a large area. How to design a water treatment equipment with a simple structure and small footprint has become a problem that needs to be solved. Summary of the invention

[0003] The invention provides a raw water purification system and a working method thereof, which solves the technical problem of how to design a water treatment device with a simple structure and a small footprint.

[0004] The present invention solves the above technical problems through the following technical solutions: A raw water purification system comprises a raw water storage tank, a water pipe is connected to the raw water storage tank, the other end of the water pipe is connected to a water collecting pipe, a cyclone separation device for raw water clarification is connected to the water collecting pipe, a water outlet valve, a booster pump, a pressure gauge, a pump valve and a pipeline mixer are sequentially connected in series on the water pipe; a coagulant filling pipe is arranged on the water pipe between the water outlet valve and the booster pump, and a coagulant aid filling pipe is arranged at the water inlet of the pipeline mixer.

[0005] The cyclone separation device is composed of a cyclone cone, a slag ball collecting chamber and an annular water branch pipe, the annular water branch pipe is connected to the water collecting pipe through a water branch valve, cyclone injection nozzles are arranged at equal intervals on the inner circumference of the annular water branch pipe, cyclone injection inlets are arranged at equal intervals on the side wall of the top end of the cyclone cone, and the cyclone injection nozzles are fixedly connected to the cyclone injection inlet; a first spiral guide plate that descends in a spiral is arranged on the inner side wall of the cyclone cone, the slag ball collecting chamber is connected to the bottom outlet of the cyclone cone, a bowl-shaped water accumulation cover is arranged on the top port of the cyclone cone, a water outlet is arranged at the center of the top of the bowl-shaped water accumulation cover, a cyclone inner cylinder is connected to the inner side of the bowl-shaped water accumulation cover, the cyclone inner cylinder and the bowl-shaped water accumulation cover form a connected closed space, and a second spiral guide plate that rises in a spiral is arranged on the inner side wall of the cyclone inner cylinder.

[0006] A flange is fixedly connected to the outer circle of the bowl-shaped water accumulation cover, and the bowl-shaped water accumulation cover is connected with the top port of the swirl cone through the flange, positioning bolts and sealing gaskets.

[0007] The swirl injection inlet of each swirl injection nozzle is arranged on the same horizontal circumference of the top side wall of the swirl cone, and the central axis of each swirl injection nozzle is tangent to the same horizontal circumference; the upper end and the lower end of the cyclone inner cylinder are both trumpet-shaped.

[0008] A working method of a raw water purification system comprises the following steps: The first step is to open the water outlet valve and the pump valve. The raw water in the raw water storage tank enters the pipeline mixer through the water pipe under the action of the booster pump. At the same time, the coagulant is added to the water pipe through the coagulant filling pipe, and the coagulant aid is added to the pipeline mixer through the coagulant aid filling pipe. The coagulant and coagulant aid are mixed with the raw water in the pipeline mixer. The second step is to open the water diversion valve, and the raw water in the pipeline mixer is sprayed into the swirl cone in a clockwise swirl direction through each swirl injection nozzle, and swirls downward under the guidance of the spiral descending first spiral guide plate arranged on the inner side wall of the swirl cone. In this process, the slag in the raw water slides along the inner side wall of the swirl cone into the slag ball collecting chamber; Step 3: Swirl to the center of the bottom of the cyclone cone. The water flows into the inner cylinder of the cyclone from the bottom port of the inner cylinder of the cyclone. Under the guidance of the second spiral guide plate that spirally rises on the inner wall of the inner cylinder of the cyclone, the water swirls upward in a clockwise direction into the bowl-shaped water collection cover and flows out through the water outlet, thereby achieving the treatment and purification of the raw water in the raw water storage tank.

[0009] The raw water inside the water pipe of the present invention is mixed with the coagulant and the coagulant aid through a mixing mechanism, so that the mixed raw water is clarified in the cyclone device, and the sediment, suspended matter and colloidal flocculants in the raw water are centrifugally separated in the cyclone tube. The impurities after centrifugal separation are discharged from the lower port of the cyclone tube, and the clean water is discharged from the upper port of the cyclone tube to enter the next water treatment device, thereby simplifying the process of raw water clarification by adding chemicals, replacing the clarification tank, saving site space and clarification tank construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of a half-section structure of the swirl cone 14 of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a schematic structural diagram of the annular water distribution branch pipe 12 of the present invention. DETAILED DESCRIPTION

[0011] The present invention is described in detail below in conjunction with the accompanying drawings: A raw water purification system comprises a raw water storage tank 1, a water pipe 2 is connected to the raw water storage tank 1, a water collecting pipe 8 is connected to the other end of the water pipe 2, a cyclone separation device for raw water clarification is connected to the water collecting pipe 8, a water outlet valve 3, a booster pump 4, a pressure gauge 5, a pump valve 6, and a pipeline mixer 7 are sequentially connected in series on the water pipe 2; a coagulant filling pipe 9 is arranged on the water pipe 2 between the water outlet valve 3 and the booster pump 4, and a coagulant aid filling pipe 10 is arranged at the water inlet of the pipeline mixer 7; through the mixing mechanism installed on the water pipe 2 and the cyclone installed at the end of the water pipe 2, the raw water inside the water pipe 2 is mixed with the coagulant and the coagulant aid through the mixing mechanism, so that the mixed raw water is clarified in the cyclone, and the sediment in the raw water is made to settle. Sediment, suspended matter and colloidal flocculants are centrifugally separated in the cyclone, and the impurities after centrifugal separation are discharged from the lower port of the cyclone, while the clean water is discharged from the upper port of the cyclone to enter the next water treatment device, thereby simplifying the process of adding chemicals to clarify the raw water, replacing the clarifier, saving site space and clarifier construction costs; the water pipe 2 of the present invention is located between the pump valve 6 and the pipeline mixer 7. The coagulant filling pipe 10 installed allows the coagulant in the coagulant filling pipe 9 to be preliminarily mixed by the booster pump 4. At the same time, the booster pump 4 also plays a role of pressurization, and the coagulant in the coagulant filling pipe 10 is mixed with the coagulant through the pipeline mixer 7, thereby improving the effect of mixing the coagulant and the coagulant in the raw water, so that it is convenient for the raw water to be clarified in the cyclone after the coagulant and the coagulant are added.

[0012] The cyclone separation device is composed of a cyclone cone 14, a slag ball collecting chamber 16 and an annular water branch pipe 12. The annular water branch pipe 12 is connected to the water collecting pipe 8 through a water diversion valve 11. Cyclone injection nozzles 13 are arranged at equal intervals on the inner circumference of the annular water branch pipe 12. Cyclone injection inlets are arranged at equal intervals on the top side wall of the cyclone cone 14. The cyclone injection nozzles 13 are fixedly connected to the cyclone injection inlet; a first spiral descending spiral is arranged on the inner side wall of the cyclone cone 14. The cyclone guide plate 15 is connected to the bottom outlet of the cyclone cone 14 with a slag ball collecting chamber 16, a bowl-shaped water accumulation cover 19 is arranged on the top port of the cyclone cone 14, a water outlet is arranged at the center of the top of the bowl-shaped water accumulation cover 19, a cyclone inner cylinder 17 is connected to the inner side of the bowl-shaped water accumulation cover 19, the cyclone inner cylinder 17 and the bowl-shaped water accumulation cover 19 form a connected closed space, and a second spiral guide plate 18 with a spiral rise is arranged on the inner side wall of the cyclone inner cylinder 17; the water collecting pipe 8 guides the guide The raw water mixed with the coagulant and the coagulant aid in the water pipe 2 is injected into the annular water branch pipe 12 through the water diversion valve 11, and the annular water branch pipe 12 is injected into the cyclone cone 14 through the cyclone injection nozzle 13 tangential to the cyclone cone 14, so that the raw water injected into the cyclone cone 14 flows in a spiral. At the same time, a cyclone inner cylinder 17 is provided in the cyclone cone 14. At the same time, when the water in the cyclone cone 14 enters the cyclone inner cylinder 17, the large particles in the water flow outward due to the rotation, and the clean water flows outward. The water converges at the center and flows upward from the cyclone inner cylinder 17 into the bowl-shaped water collection cover 19. The first spiral guide plate 15 welded on the inner surface of the cyclone cone 14 and the second spiral guide plate 18 welded on the inner surface of the cyclone inner cylinder 17 facilitate the first spiral guide plate 15 to guide the water rotating inside the cyclone cone 14 downward, and facilitate the second spiral guide plate 18 to guide the water rotating inside the cyclone inner cylinder 17 upward, so as to facilitate the precipitation of large particles of impurities in the cyclone cone 14 in the slag ball collecting chamber 16.

[0013] A flange 20 is fixedly connected to the outer circle of the bowl-shaped water collection cover 19 , and the bowl-shaped water collection cover 19 is connected to the top port of the swirl cone 14 through the flange 20 , positioning bolts 22 and a sealing gasket 21 .

[0014] The swirl injection inlet of each swirl injection nozzle 13 is arranged on the same horizontal circumference of the top side wall of the swirl cone 14, and the central axis of each swirl injection nozzle 13 is tangent to the same horizontal circumference; the upper end and the lower end of the cyclone inner cylinder 17 are both trumpet-shaped, and the cyclone inner cylinder 17 and the bowl-shaped water collection cover 19 at the center of the swirl cone 14 form a connected closed channel for conveying water upward, and the space inside the swirl cone 14 outside the swirl cone 14 is connected with the water collecting pipe 8 and each swirl injection nozzle 13, forming a water conveying channel for downward swirl separation, and the slag separated by swirl is discharged into the slag ball collecting chamber 16 through the bottom port of the swirl cone 14.

[0015] A working method of a raw water purification system comprises the following steps: The first step is to open the water outlet valve 3 and the pump valve 6. The raw water in the raw water storage tank 1 enters the pipeline mixer 7 through the water pipe 2 under the action of the booster pump 4. At the same time, the coagulant is added to the water pipe 2 through the coagulant filling pipe 9, and the coagulant aid is added to the pipeline mixer 7 through the coagulant aid filling pipe 10. The coagulant and the coagulant aid are mixed with the raw water in the pipeline mixer 7; The second step is to open the water diversion valve 11, and the raw water in the pipeline mixer 7 is injected into the swirl cone 14 in a clockwise swirl direction through each swirl injection nozzle 13, and swirls downward under the guidance of the spiral descending first spiral guide plate 15 arranged on the inner side wall of the swirl cone 14. In this process, the slag in the raw water slides along the inner side wall of the swirl cone 14 into the slag ball collecting chamber 16; Step 3: The water swirls to the center of the bottom of the swirl cone 14. The water flows into the cyclone inner cylinder 17 from the bottom port of the cyclone inner cylinder 17, and under the guidance of the spirally ascending second spiral guide plate 18 arranged on the inner side wall of the cyclone inner cylinder 17, the water swirls upward in the clockwise direction into the bowl-shaped water collection cover 19, and flows out through the water outlet 23, thereby achieving the treatment and purification of the raw water in the raw water storage tank 1.

Claims

1. A raw water purification system, comprising a raw water storage tank (1), to which a water pipe (2) is connected, characterized in that: The other end of the water guide pipe (2) is connected to a water collecting pipe (8), to which a cyclone separation device for clarifying raw water is connected; a water outlet valve (3), a booster pump (4), a pressure gauge (5), a pump valve (6), and a pipeline mixer (7) are sequentially connected in series on the water guide pipe (2); a coagulant filling pipe (9) is provided on the water guide pipe (2) between the water outlet valve (3) and the booster pump (4), and a coagulant aid filling pipe (10) is provided at the water inlet of the pipeline mixer (7).

2. A raw water purification system according to claim 1, characterized in that: The cyclone separation device is composed of a cyclone cone (14), a slag ball collecting chamber (16) and an annular water branch pipe (12). The annular water branch pipe (12) is connected to the water collecting pipe (8) through a water branch valve (11). Cyclone injection nozzles (13) are arranged at equal intervals on the inner circumference of the annular water branch pipe (12). Cyclone injection inlets are arranged at equal intervals on the top side wall of the cyclone cone (14). The cyclone injection nozzles (13) are connected to the cyclone injection inlets correspondingly. A first spiral descending spiral is arranged on the inner side wall of the cyclone cone (14). A cyclone guide plate (15) is connected to a slag ball collecting chamber (16) at the bottom outlet of the cyclone cone (14); a bowl-shaped water accumulation cover (19) is provided at the top port of the cyclone cone (14); a water outlet (23) is provided at the center of the top of the bowl-shaped water accumulation cover (19); a cyclone inner cylinder (17) is connected to the inner side of the bowl-shaped water accumulation cover (19); the cyclone inner cylinder (17) and the bowl-shaped water accumulation cover (19) form a connected closed space; and a second spiral guide plate (18) is provided on the inner side wall of the cyclone inner cylinder (17) in a spiral manner.

3. A raw water purification system according to claim 1 or 2, characterized in that: A flange (20) is fixedly connected to the outer circle of the bowl-shaped water collection cover (19), and the bowl-shaped water collection cover (19) is connected to the top port of the swirl cone (14) through the flange (20), positioning bolts (22) and a sealing gasket (21).

4. A raw water purification system according to claim 1 or 2, characterized in that: The swirl injection inlet of each swirl injection nozzle (13) is arranged on the same horizontal circumference of the top side wall of the swirl cone (14), and the central axis of each swirl injection nozzle (13) is tangent to the same horizontal circumference; the upper end and the lower end of the cyclone inner cylinder (17) are both trumpet-shaped.

5. The working method of a raw water purification system according to claim 4, comprising the following steps: The first step is to open the water outlet valve (3) and the pump valve (6), and the raw water in the raw water storage tank (1) enters the pipeline mixer (7) through the water guide pipe (2) under the action of the booster pump (4). At the same time, the coagulant is added to the water guide pipe (2) through the coagulant filling pipe (9), and the coagulant aid is added to the pipeline mixer (7) through the coagulant aid filling pipe (10). The coagulant and the coagulant aid are mixed with the raw water in the pipeline mixer (7); Step 2: Open the water diversion valve (11), and the raw water in the pipeline mixer (7) is injected into the swirl cone (14) in a clockwise swirl direction through each swirl injection nozzle (13), and swirls downward under the guidance of the spirally descending first spiral guide plate (15) provided on the inner side wall of the swirl cone (14). During this process, the slag in the raw water slides along the inner side wall of the swirl cone (14) into the slag ball collecting chamber (16); Step 3: The water flows to the center of the bottom of the cyclone cone (14) and enters the cyclone inner cylinder (17) from the bottom port of the cyclone inner cylinder (17). Under the guidance of the second spiral guide plate (18) arranged on the inner side wall of the cyclone inner cylinder (17), the water flows upward in a clockwise direction into the bowl-shaped water collection cover (19) and flows out through the water outlet (23), thereby achieving the treatment and purification of the raw water in the raw water storage tank (1).

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