Water purification method for water conservancy gate

Abstract

The application relates to the technical field of sewage treatment, in particular to a water conservancy project gate water purification method. The opening and closing component comprises a gate body installed on a dam, the water guiding component comprises a water guiding mechanism, the water purification component comprises a water purification mechanism, the intercepting component comprises an intercepting mechanism, the stirring component comprises a stirring unit, and the extracting component comprises an extracting unit. In the water conservancy project gate water purification method, the intercepting mechanism is arranged to remove large-particle impurities in water flow, when the water flow passes through the intercepting plate, large-particle impurities are intercepted by the filter plate located in the back cavity, and the large-particle impurities accumulated in the filter plate groove affect the speed of the water flow passing through the filter plate, so that the original filter plate intercepting large-particle impurities is replaced, and the filter plate sliding out of the back cavity facilitates the cleaning of the large-particle impurities in the groove, so that the purification ability of the water purification device to the water flow in the water conservancy project is ensured while the impurities intercepted by the filter plate are cleaned.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a water purification method using a sluice gate in a water conservancy project. Background Technology

[0002] For the purpose of protecting water conservancy facilities, improving water quality for various uses (such as agricultural irrigation and landscape water use), and protecting the ecological environment, sewage purification devices are usually installed on one side of the gate of water conservancy projects to remove impurities such as silt, branches, fibrous materials (such as algae and aquatic plants) and small garbage contained in the water around the gate.

[0003] In related technologies, invention patent CN112573736B discloses a gate water purification device for water conservancy projects and its usage method. The gate water purification device includes a purification tank, a gate frame, a first dust baffle, a retrieval component, an ultraviolet disinfection lamp, a sedimentation disinfection component, a cleaning component, a second dust baffle, and a water outlet. The gate frame is installed at the center of one side of the top end face of the purification tank. A first water distribution plate, a second water distribution plate, and a third water distribution plate are fixedly installed on the inner end face of the purification tank by welding. The first dust baffle is fixedly installed on the top of the purification tank above the first and second water distribution plates. This gate water purification device can perform multi-stage filtration of water flow during use, thereby filtering out impurities and cleaning the water; it can also sterilize and disinfect the water flow, thereby improving water quality. It is understood that wastewater treatment requires multiple physical / chemical treatment processes to achieve water purification.

[0004] When using the gate-type water purification device proposed in the aforementioned patent, wastewater typically undergoes multiple treatment processes, including flocculation, sedimentation, and purification, after entering the device to achieve multi-stage purification and the desired purification effect. However, during the rainy season, when the demand for water treatment increases, the flow rate of wastewater into the treatment device increases. Since the purification device's capacity is fixed, and each process requires a certain reaction time to achieve the desired purification effect, the shorter flow time during the rainy season reduces the effectiveness of wastewater treatment. Consequently, the water flowing out of the purification device may fail to meet the standards for subsequent discharge and use. Moreover, as the amount of sewage treated by the water purification device increases, impurities intercepted from the sewage (including silt, garbage, and flocculent substances) will cause blockage if not cleaned in time, thus affecting the sewage treatment capacity of the water purification device. Generally speaking, when cleaning and removing these impurities, the gate needs to be closed to prevent interference with the cleaning process. However, during the flood season when the demand for sewage treatment is high, it is not possible to close the gate in time, otherwise it will damage the entire water conservancy project and even downstream industries.

[0005] In view of this, we propose a water purification method for water conservancy engineering gates to improve the shortcomings of existing technologies. Summary of the Invention

[0006] The purpose of this invention is to provide a water purification method for gates in water conservancy projects to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention aims to provide a water purification method for a sluice gate in a water conservancy project, comprising the following steps:

[0008] S1. Primary filtration: Opening the opening and closing components of the water conservancy project allows water to enter the water intake component, and the interception components in the water flow path intercept large particles of impurities in the water.

[0009] S2. Purification: After the water flows through the interception component, it flows into the water purification component under the action of gravitational potential energy difference and water pressure difference. The water purification component separates small particulate impurities from the water.

[0010] S2.1 Flocculation: The water flowing into the water purification unit first passes through the flocculation zone. The water undergoes a flocculation reaction in the flocculation space, and small particulate impurities agglomerate into flocs and remain in the flocculation space.

[0011] S2.2 Particulate media filtration: After the water flows out of the flocculation space, it enters the media filtration area, where the media filtration space filters out residual small particulate impurities and floc residues in the water flow.

[0012] S3. Unblocking the flocculation space: When the water flow speed increases during the rainy season, the stirring components in the flocculation space stir the water flow in a direction perpendicular to the water flow direction, so that the water flow is fully flocculated.

[0013] S4. Floc Removal: The extraction component located above the stirring component extracts the flocs to the water purification component;

[0014] S5. Excessive buffering: When the water flow during the flood season exceeds the purification capacity of the water purification components, the water flow directly bypasses the water purification components and enters the flood discharge area.

[0015] The opening and closing component includes a gate body installed on the dam; the water diversion component includes a water diversion mechanism; the water purification component includes a water purification mechanism; the interception component includes an interception mechanism; the stirring component includes a stirring unit; and the extraction component includes an extraction unit.

[0016] The gate body is used to control the opening and closing of water flow in the water conservancy project. The water intake mechanism includes a return cavity with openings at both ends of the return cavity. One of the openings of the return cavity is connected to the outlet of the gate body. The bottom of the return cavity is connected to the water purification mechanism. The interception mechanism is located between the gate body and the water purification mechanism and is located inside the return cavity. The stirring unit is located at the internal center of the water purification mechanism, and the extraction unit is located above the stirring unit.

[0017] The water guiding mechanism is used to guide the direction of water flows of different flow rates. The interception mechanism is used to intercept large particles of impurities in the water flow, and the interception mechanism can carry the intercepted large particles of impurities away from the return cavity. The water purification mechanism is used to remove small particles of impurities in the water flow. The stirring unit is used to stir the water flow entering the water purification mechanism, and the rotating stirring unit can prevent the water purification mechanism from being blocked. The extraction unit can drive the impurities in the water purification mechanism upward away from the stirring unit.

[0018] During the process of the extraction unit driving the impurities in the water purification mechanism to move upward, the extraction unit is able to separate the impurities from the water.

[0019] After the impurities carried by the extraction unit enter the cavity, the turbulent water flow from the water conservancy project impacts the impurities away from the interior of the extraction unit.

[0020] As a further improvement to this technical solution, the opening of the cavity away from the gate body is connected to the flood discharge area. The top of the cavity is provided with a mounting base, and the bottom of the cavity is provided with a drain outlet below the mounting base. The cavity is provided with a slotted plate groove between the drain outlet and the slotted plate groove.

[0021] As a further improvement to this technical solution, the water purification mechanism includes a water purification tank fixedly connected to the bottom of the drain outlet. A flocculation receiving plate is fixedly connected inside the water purification tank. The top of the flocculation receiving plate and the inner wall of the water purification tank form a flocculation chamber, and the bottom of the flocculation receiving plate and the inner wall of the water purification tank form a media filtration chamber.

[0022] As a further improvement to this technical solution, the interception mechanism includes an interception plate and a hydraulic rod. The interception plate is slidably connected in the insertion plate groove, the fixed part of the hydraulic rod is fixedly connected to the top of the cavity, and the movable part of the hydraulic rod is fixedly connected to one end of the interception plate.

[0023] As a further improvement to this technical solution, the interception plate includes two fixedly connected filter plates. Each of the two filter plates has a groove on the side near the gate body. The groove is used to collect large particles of waste. The area of ​​a single filter plate is equal to the cross-sectional area of ​​the cavity opening.

[0024] As a further improvement to this technical solution, the stirring unit includes a drive motor fixedly connected to the top of the mounting base. The output shaft of the drive motor is vertically downward, and a main rod is coaxially connected to the bottom of the output shaft of the drive motor. A stirring paddle is coaxially connected to the bottom of the main rod.

[0025] As a further improvement to this technical solution, the stirring paddle is close to the flocculation receiving plate, and the stirring paddle is provided with multiple inclined blades, the inclination direction of the bottom of the blades being the same as the direction of rotation of the stirring paddle.

[0026] As a further improvement to this technical solution, the extraction unit includes an L-shaped tube disposed on the upper part of the stirring paddle. One of the arms of the L-shaped tube is sleeved on the outside of the main rod, and the other arm of the L-shaped tube is fixedly connected to the cavity. The arm fixedly connected to the inner wall of the cavity faces away from the gate body. Multiple punches are provided at the corner of the L-shaped tube on the side close to the gate body. The extraction unit also includes an auger coaxially connected to the main rod.

[0027] As a further improvement to this technical solution, the auger is provided with multiple drainage holes along a direction parallel to the main rod.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. In the water purification method of the gate of this water conservancy project, large particulate impurities in the water flow are removed by the interception mechanism. When the water flows through the interception plate, the larger particulate impurities are intercepted by the filter plate located in the cavity. The large particulate impurities accumulated in the groove of the filter plate will affect the speed of water flow through the filter plate. The filter plate located in the cavity slides out of the cavity, and the filter plate that was originally outside the cavity slides into the cavity, replacing the original filter plate's function of intercepting large particulate impurities. The filter plate that slides out of the cavity is easy to clean the large particulate impurities in the groove, thus ensuring that the purification capacity of the water purification device for the water flow in the water conservancy project is not affected while cleaning the impurities intercepted by the filter plate.

[0030] 2. In the water purification method of the gate of this water conservancy project, the flocculant is dispersed into the water flowing through the flocculation chamber by the set stirring unit. When the flocs accumulate to a certain amount, they will affect the water flow capacity of the flocculation receiving plate. Therefore, the stirring blades close to the flocculation receiving plate scrape the flocs to prevent them from clogging the flocculation receiving plate.

[0031] 3. In the water purification method of the gate of this water conservancy project, the turbulent water that passes through the perforation and enters the L-shaped pipe impacts the flocs, and the flocs extracted by the extraction unit are flushed out of the L-shaped pipe, thereby realizing the automatic removal of flocs in the flocculation chamber. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0034] Figure 3 This is a cross-sectional front view of the water intake mechanism of the present invention;

[0035] Figure 4 This is a three-dimensional structural diagram of the interception mechanism of the present invention;

[0036] Figure 5 This is a cross-sectional front view of the water purification mechanism of the present invention;

[0037] Figure 6 This is a three-dimensional structural diagram of the stirring unit of the present invention;

[0038] Figure 7 This is a cross-sectional front view of the extraction unit of the present invention;

[0039] Figure 8 This is a second cross-sectional front view of the extraction unit of the present invention;

[0040] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.

[0041] The meanings of the labels in the diagram are as follows:

[0042] 100. Gate body; 110. Water intake mechanism; 111. Recessed cavity; 112. Mounting base; 113. Outlet; 114. Insert plate slot;

[0043] 120. Water purification unit; 121. Water purification tank; 122. Flocculation receiving plate; 123. Flocculation chamber; 124. Media filtration chamber;

[0044] 200. Interception mechanism; 210. Interception plate; 220. Hydraulic rod;

[0045] 300. Stirring unit; 310. Drive motor; 320. Main rod; 330. Stirring paddle;

[0046] 400, extraction unit; 410, L-shaped pipe; 411, punch; 420, auger; 421, drain hole. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1: In order to improve the purification effect of the water purification device on the water flow when the water flow of the water conservancy project is large, a stirring component is set in the flocculation area of ​​the water purification device so that the water flow can fully contact the flocculant when passing through the flocculation area, thereby improving the water purification capacity of the water flow of the water conservancy project.

[0049] Please see Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide a water purification method for a sluice gate in a water conservancy project, including the following steps:

[0050] S1. Primary filtration: Opening the opening and closing components of the water conservancy project allows water to enter the water intake component, and the interception components in the water flow path intercept large particles of impurities in the water.

[0051] S2. Purification: After the water flows through the interception component, it flows into the water purification component under the action of gravitational potential energy difference and water pressure difference. The water purification component separates small particulate impurities from the water.

[0052] S2.1 Flocculation: The water flowing into the water purification unit first passes through the flocculation zone. The water undergoes a flocculation reaction in the flocculation space, and small particulate impurities agglomerate into flocs and remain in the flocculation space.

[0053] S2.2 Particulate media filtration: After the water flows out of the flocculation space, it enters the media filtration area, where the media filtration space filters out residual small particulate impurities and floc residues in the water flow.

[0054] S3. Unblocking the flocculation space: When the water flow speed increases during the rainy season, the stirring components in the flocculation space stir the water flow in a direction perpendicular to the water flow direction, so that the water flow is fully flocculated.

[0055] S4. Floc Removal: The extraction component located above the stirring component extracts the flocs to the water purification component;

[0056] S5. Excessive buffering: When the water flow during the flood season exceeds the purification capacity of the water purification components, the water flow directly bypasses the water purification components and enters the flood discharge area.

[0057] Among them, the opening and closing components include a gate body 100 installed on the dam, the water diversion components include a water diversion mechanism 110, the water purification components include a water purification mechanism 120, the interception components include an interception mechanism 200, the stirring components include a stirring unit 300, and the extraction components include an extraction unit 400.

[0058] The gate body 100 is used to control the opening and closing of the water flow in the water conservancy project. The water intake mechanism 110 includes a return cavity 111. Both ends of the return cavity 111 are provided with openings. One of the openings of the return cavity 111 is connected to the water outlet of the gate body 100. The bottom of the return cavity 111 is connected to the water purification mechanism 120. The interception mechanism 200 is located between the gate body 100 and the water purification mechanism 120, and the interception mechanism 200 is located inside the return cavity 111. The stirring unit 300 is located in the center of the water purification mechanism 120. The extraction unit 400 is located above the stirring unit 300.

[0059] Since the water flow rate of the water conservancy project varies in different seasons, it is necessary to set up a water diversion mechanism 110 to guide the direction of water flow with different flow rates, an interception mechanism 200 to intercept large particles of impurities in the water flow, and the interception mechanism 200 can carry the intercepted large particles of impurities away from the return cavity 111, a water purification mechanism 120 to remove small particles of impurities in the water flow, a stirring unit 300 to stir the water flow entering the water purification mechanism 120, and the rotating stirring unit 300 can prevent the water purification mechanism 120 from being blocked, and an extraction unit 400 can drive the impurities in the water purification mechanism 120 upward away from the stirring unit 300.

[0060] During the process of the extraction unit 400 driving the impurities in the water purification mechanism 120 to move upward, the extraction unit 400 is able to separate the impurities from the water.

[0061] After the impurities driven by the extraction unit 400 enter the return cavity 111, the turbulent water flow from the water conservancy project impacts the impurities away from the interior of the extraction unit 400.

[0062] Because the water flow rate of water conservancy projects varies in different seasons, the water intake mechanism 110 was improved in order to enhance the water purification device's ability to handle water flow.

[0063] like Figure 3 As shown, the opening of the cavity 111 away from the gate body 100 is connected to the flood discharge area. The top of the cavity 111 is provided with a mounting base 112, and the bottom of the cavity 111 is provided with a drain outlet 113 below the mounting base 112. The cavity 111 is provided with a slot 114 between the drain outlet 113 and the slot 114.

[0064] It should be noted that when the water flow of the water conservancy project is within the processing capacity of the water purification device, the water flow enters the cavity 111 after being released from the opening of the gate body 100. After passing through the interception mechanism 200, most of the water flow falls from the drain outlet 113 to the water purification device 120 for water purification treatment. A small portion of the water flow first impacts the corner of the extraction unit 400 and then falls naturally into the water purification device 120.

[0065] Water flow from water conservancy processes inevitably carries impurities such as tree branches and floating garbage. If these impurities enter the water purification device, they can easily cause blockages and affect the purification effect of the water flow. Therefore, an interception mechanism 200 is installed to prevent the water flow from being purified by the water purification device.

[0066] like Figure 4 As shown, the interception mechanism 200 includes an interception plate 210 and a hydraulic rod 220. The interception plate 210 is slidably connected in the insertion plate groove 114. The fixed part of the hydraulic rod 220 is fixedly connected to the top of the cavity 111, and the movable part of the hydraulic rod 220 is fixedly connected to one end of the interception plate 210.

[0067] Furthermore, the interceptor plate 210 includes two fixedly connected filter plates. Each filter plate has a groove on the side near the gate body 100. The groove is used to collect large particles of waste. The area of ​​a single filter plate is equal to the cross-sectional area of ​​the opening of the U-shaped cavity 111.

[0068] In other words, when water from the water conservancy project passes through the interceptor plate 210, larger particles of impurities are intercepted by the filter plate located in the cavity 111. As the interception time increases, the amount of large particles of debris accumulated in the groove of the filter plate gradually increases, which will affect the speed of water flow through the filter plate. Therefore, the hydraulic rod 220 is activated, and its movable part pushes the filter plate located in the cavity 111 to slide out of the cavity 111. At the same time, the filter plate that was originally outside the cavity 111 slides into the cavity 111, replacing the original filter plate's function of intercepting large particles of impurities. The filter plate that slides out of the cavity 111 is easy to clean the large particles of impurities in the groove, thus ensuring that while cleaning the impurities intercepted by the filter plate, the purification capacity of the water purification device for the water flow in the water conservancy project is not affected.

[0069] After being intercepted by the filter plate, the water flows into the water purification unit 120 for further purification, further removing small particulate impurities such as algae contained in the water.

[0070] exist Figure 5 In the process, the water purification mechanism 120 includes a water purification tank 121 fixedly connected to the bottom of the drain outlet 113. A flocculation receiving plate 122 is fixedly connected inside the water purification tank 121. The top of the flocculation receiving plate 122 and the inner wall of the water purification tank 121 form a flocculation chamber 123, and the bottom of the flocculation receiving plate 122 and the inner wall of the water purification tank 121 form a media filtration chamber 124.

[0071] It should be noted that when the water flows into the water purification tank 121, it first reacts with the flocculant in the flocculation chamber 123 to form flocs, which gradually settle downwards and are intercepted by the flocculation receiving plate 122. The water then passes through the flocculation receiving plate 122 and enters the media filtration chamber 124. After the media filtration chamber 124 removes the small particulate impurities and floc residues remaining in the water, it can be fed into other systems for use.

[0072] The principle behind the flocculation reaction between flocculants and small particulate impurities such as algae in water is as follows:

[0073] Many suspended particles carry an electrical charge in water, which allows them to disperse stably. For example, some colloidal particles, such as clay particles and algal cells, typically carry a negative charge. When a flocculant is added, the cations in the flocculant (if it is a cationic flocculant) attract these negatively charged particles. As more flocculant is added, the charge on the surface of the particles is gradually neutralized. Once the charge is neutralized to a certain extent, the electrostatic repulsion between the particles decreases, allowing them to approach each other. Like two repelling magnets, when their magnetism is weakened, they are more likely to move closer together.

[0074] Flocculants are generally high molecular weight compounds, such as polyacrylamide (PAM). These high molecular weight flocculants have many active groups on their molecular chains, which can adsorb onto the surface of suspended particles. A single flocculant molecule can adsorb multiple particles simultaneously, acting like a bridge connecting them. For example, PAM molecular chains can extend and wrap around different particles, aggregating them to form larger flocs.

[0075] When flocculants form hydroxide precipitates in water (such as aluminum hydroxide precipitate produced by the hydrolysis of polyaluminum chloride), these precipitates encapsulate suspended particles in the water during sedimentation. Like a large net settling in the water, they capture surrounding particles, thus promoting particle aggregation and sedimentation.

[0076] With the arrival of the rainy season, the water flow in the water conservancy project increases, and the water flows faster through the water purification tank 121. However, the flocculation reaction requires a certain amount of time to achieve an effective purification effect. If the water stays in the flocculation chamber 123 for too short a time, the purification effect will not be ideal. Therefore, a stirring unit 300 needs to be installed in the flocculation chamber 123 to disperse the flocculant into the water flowing through the flocculation chamber 123.

[0077] Figure 6 The structure of the stirring unit 300 is shown. The specific structure of the stirring unit 300 is disclosed below. The stirring unit 300 includes a drive motor 310 fixedly connected to the top of the mounting base 112. The output shaft of the drive motor 310 is vertically downward. The bottom of the output shaft of the drive motor 310 is coaxially connected to the main rod 320. The bottom of the main rod 320 is coaxially connected to the stirring paddle 330.

[0078] It should be noted that the stirring paddle 330 is close to the flocculation receiving plate 122, and the stirring paddle 330 is provided with multiple inclined blades, the inclination direction of the bottom of the blades is the same as the rotation direction of the stirring paddle 330.

[0079] When water flows through the flocculation chamber 123, the power to the drive motor 310 is turned on. The drive motor 310 drives the main rod 320, which is coaxially connected to its output shaft, to rotate. The main rod 320 drives the agitator 330 at its bottom to rotate, dispersing the flocculant added to the flocculation chamber 123. After the flocculant and small particles in the water flow agglomerate into flocs, their volume gradually increases and they settle onto the flocculation receiving plate 122. As the flocculation time increases, the flocs gradually agglomerate together and accumulate at the top of the flocculation receiving plate 122. When the flocs accumulate to a certain amount, they will affect the water flow capacity of the flocculation receiving plate 122. Therefore, the blades of the agitator 330 close to the flocculation receiving plate 122 scrape the flocs to prevent them from clogging the flocculation receiving plate 122.

[0080] After the water flows through the flocculation receiving plate 122, most of the impurities have been removed. The water entering the media filtration chamber 124 contains only a small amount of small particulate impurities such as algae and the floc residue that has passed through the flocculation receiving plate 122. After being filtered by the quartz sand, activated carbon and other filter materials in the media filtration chamber 124, the water can be used for other purposes.

[0081] like Figure 7 and Figure 8 As shown, the specific structure of the extraction unit 400 will be disclosed next. The extraction unit 400 includes an L-shaped tube 410 disposed on the upper part of the stirring paddle 330. One of the arms of the L-shaped tube 410 is sleeved on the outside of the main rod 320, and the other arm of the L-shaped tube 410 is fixedly connected to the cavity 111. The arm fixedly connected to the inner wall of the cavity 111 faces away from the gate body 100. Multiple punch holes 411 are opened at the corner of the L-shaped tube 410 on the side close to the gate body 100. The extraction unit 400 also includes an auger 420 coaxially connected to the main rod 320.

[0082] Furthermore, the auger 420 has multiple drainage holes 421 opened along a direction parallel to the main rod 320.

[0083] Based on the above description of the stirring unit 300, when the flocs located in the flocculation chamber 123 are scooped up by the rotating stirring paddle 330, the main rod 320 drives the auger 420 to rotate, generating suction on the end of the L-shaped tube 410 that is submerged in the flocculation chamber 123, thereby drawing the flocs suspended in the flocculation chamber 123 into the L-shaped tube 410. Then, driven by the rotating auger 420, the flocs move upward. During this process, the water that rises with the flocs will slide down through the drain hole 421 on the auger 420, thus gradually dissolving the flocs. The water rises to the top of the water tank 121 into the cavity 111 (but is still located inside the L-shaped tube 410). Since the water flow in the cavity 111 comes from the water conservancy project, and the water pressure and flow velocity are relatively high after the water flow is intercepted by the gate body 100, part of the turbulent flow that impacts the corner of the L-shaped tube 410 will pass through the perforation 411 and enter the horizontal section of the L-shaped tube 410. The turbulent flow that enters the L-shaped tube 410 impacts the flocs that rise to the top and flushes the flocs out of the L-shaped tube 410, thereby achieving automatic removal of the flocs in the flocculation chamber 123.

[0084] In summary, the working principle of this invention is as follows:

[0085] First, the gate body 100 of the water conservancy project is opened, allowing water to enter the cavity 111. The filter plate on the water flow path intercepts large particles of impurities in the water.

[0086] Next, after the water flows through the filter plate, it flows into the water purification tank 121 under the action of gravitational potential energy difference and water pressure difference. The flocculation receiving plate 122 separates the small particulate impurities in the water from the water. After the water flows out of the flocculation chamber 123, it enters the media filtration chamber 124. The media filtration chamber 124 filters out the remaining small particulate impurities and floc residue in the water flow.

[0087] When the water flow speed increases during the rainy season, the stirring paddle 330 in the flocculation chamber 123 stirs the water flow in a direction perpendicular to the water flow direction, so that the water flow can fully contact the flocculant. At the same time, when the flocs accumulate to a certain amount, they will affect the water flow capacity of the flocculation receiving plate 122. Therefore, the blades of the stirring paddle 330 close to the flocculation receiving plate 122 scrape the flocs to prevent them from clogging the flocculation receiving plate 122.

[0088] When the flocs located in the flocculation chamber 123 are scooped up by the rotating agitator blades 330, the main rod 320 drives the auger 420 to rotate, generating suction on the end of the L-shaped pipe 410 that is submerged in the flocculation chamber 123. This draws the flocs suspended in the flocculation chamber 123 into the L-shaped pipe 410. Then, driven by the rotating auger 420, the flocs move upward. During this process, the water that rises with the flocs slides down through the drain hole 421 on the auger 420. As a result, the flocs gradually rise into the purified water tank 121. Inside the top cavity 111 (but still within the L-shaped tube 410), the water flow in the cavity 111 comes from the hydraulic engineering project. After the water flow is intercepted by the gate body 100, the water pressure and flow velocity are relatively high. Part of the turbulent flow that impacts the corner of the L-shaped tube 410 will pass through the perforation 411 and enter the horizontal section of the L-shaped tube 410. The turbulent flow that enters the L-shaped tube 410 impacts the flocs that rise to the top and flushes the flocs out of the L-shaped tube 410, thereby achieving automatic removal of the flocs in the flocculation chamber 123.

[0089] Example 2: Please continue reading Figure 1 and Figure 2 As shown, when the rainfall during the flood season is too heavy and the water volume completely exceeds the water treatment capacity of the water purification device, the device cannot purify the water in time. At this point, the water flowing through the purification tank 121 cannot be used for other purposes. Therefore, preliminary treatment of the water is necessary.

[0090] During the flood season, the water flow of the water conservancy project is so large that it overflows directly from the top of the cavity 111. In other words, the water released by the gate body 100 enters the cavity 111 from one end and then flows out directly from the other end of the cavity 111, thus entering the flood discharge area connected to the cavity 111.

[0091] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for purifying water through a gate in a water conservancy project, characterized in that: Includes the following steps: S1. Primary filtration: Opening the opening and closing components of the water conservancy project allows water to enter the water intake component, and the interception components in the water flow path intercept large particles of impurities in the water. S2. Purification: After the water flows through the interception component, it flows into the water purification component under the action of gravitational potential energy difference and water pressure difference. The water purification component separates small particulate impurities from the water. S2.1 Flocculation: The water flowing into the water purification unit first passes through the flocculation zone. The water undergoes a flocculation reaction in the flocculation space, and small particulate impurities agglomerate into flocs and remain in the flocculation space. S2.2 Particulate media filtration: After the water flows out of the flocculation space, it enters the media filtration area, where the media filtration space filters out residual small particulate impurities and floc residues in the water flow. S3. Unblocking the flocculation space: When the water flow speed increases during the rainy season, the stirring components in the flocculation space stir the water flow in a direction perpendicular to the water flow direction, so that the water flow is fully flocculated. S4. Floc Removal: The extraction component located above the stirring component extracts the flocs to the water purification component; S5. Excessive buffering: When the water flow during the flood season exceeds the purification capacity of the water purification components, the water flow directly bypasses the water purification components and enters the flood discharge area. The opening and closing components include a gate body (100) installed on the dam, the water diversion components include a water diversion mechanism (110), the water purification components include a water purification mechanism (120), the interception components include an interception mechanism (200), the stirring components include a stirring unit (300), and the extraction components include an extraction unit (400). The gate body (100) is used to control the opening and closing of the water flow in the water conservancy project. The water diversion mechanism (110) includes a cavity (111). Both ends of the cavity (111) are provided with openings. One of the openings of the cavity (111) is connected to the outlet of the gate body (100). The bottom of the cavity (111) is connected to the water purification mechanism (120). The interception mechanism (200) is located between the gate body (100) and the water purification mechanism (120), and the interception mechanism (200) is located inside the cavity (111). The stirring unit (300) is located at the internal center of the water purification mechanism (120). The extraction unit (400) is located above the stirring unit (300). The water guiding mechanism (110) is used to guide the direction of water flows of different flow rates. The interception mechanism (200) is used to intercept large particulate impurities in the water flow, and the interception mechanism (200) can carry the intercepted large particulate impurities away from the return cavity (111). The water purification mechanism (120) is used to remove small particulate impurities in the water flow. The stirring unit (300) is used to stir the water flow entering the water purification mechanism (120), and the rotating stirring unit (300) can prevent the water purification mechanism (120) from clogging. The extraction unit (400) can drive the impurities in the water purification mechanism (120) upward away from the stirring unit (300). During the process of the extraction unit (400) driving the impurities in the water purification mechanism (120) to move upward, the extraction unit (400) is able to separate the impurities from the water; After the impurities carried by the extraction unit (400) enter the cavity (111), the turbulent water flow from the water conservancy project impacts the impurities away from the interior of the extraction unit (400); The stirring unit (300) includes a drive motor (310), the output shaft of the drive motor (310) is vertically downward, the bottom of the output shaft of the drive motor (310) is coaxially connected to a main rod (320), and the bottom of the main rod (320) is coaxially connected to a stirring paddle (330). The extraction unit (400) includes an L-shaped tube (410) disposed on the upper part of the stirring paddle (330). One of the arms of the L-shaped tube (410) is sleeved on the outside of the main rod (320). The other arm of the L-shaped tube (410) is fixedly connected to the cavity (111), and the arm fixedly connected to the inner wall of the cavity (111) faces away from the gate body (100). Multiple punches (411) are provided at the corner of the L-shaped tube (410) on the side close to the gate body (100). The extraction unit (400) also includes an auger (420) coaxially connected to the main rod (320).

2. The water purification method for gates in water conservancy projects according to claim 1, characterized in that: The opening of the cavity (111) away from the gate body (100) is connected to the flood discharge area. The top of the cavity (111) is provided with a mounting base (112). The bottom of the cavity (111) is provided with a drain outlet (113) below the mounting base (112). The cavity (111) is provided with a slot (114) between the drain outlet (113) and the slot (114).

3. The water purification method for gates in water conservancy projects according to claim 2, characterized in that: The water purification mechanism (120) includes a water purification tank (121) fixedly connected to the bottom of the drain (113). A flocculation receiving plate (122) is fixedly connected inside the water purification tank (121). The top of the flocculation receiving plate (122) and the inner wall of the water purification tank (121) form a flocculation chamber (123). The bottom of the flocculation receiving plate (122) and the inner wall of the water purification tank (121) form a media filtration chamber (124).

4. The water purification method for gates in water conservancy projects according to claim 2, characterized in that: The interception mechanism (200) includes an interception plate (210) and a hydraulic rod (220). The interception plate (210) is slidably connected in the insertion slot (114). The fixed part of the hydraulic rod (220) is fixedly connected to the top of the cavity (111), and the movable part of the hydraulic rod (220) is fixedly connected to one end of the interception plate (210).

5. The water purification method for gates in water conservancy projects according to claim 4, characterized in that: The interceptor plate (210) includes two fixedly connected filter plates. Both filter plates have grooves on the side near the gate body (100). The grooves are used to collect large particles of garbage. The area of ​​a single filter plate is equal to the cross-sectional area of ​​the opening of the cavity (111).

6. The water purification method for gates in water conservancy projects according to claim 1, characterized in that: The stirring paddle (330) is close to the flocculation receiving plate (122). The stirring paddle (330) is provided with multiple inclined blades, and the inclination direction of the bottom of the blades is the same as the rotation direction of the stirring paddle (330).

7. The water purification method for gates in water conservancy projects according to claim 1, characterized in that: The auger (420) has multiple drainage holes (421) in a direction parallel to the main rod (320).

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