Water body purification device for environmental governance

Abstract

The invention relates to a water body purification device for environmental governance. The water body purification device comprises a shell, a purified water outlet pipe, a sand discharge pipe, a valve plate, a first elastic piece, a filter cartridge, a silt water inlet pipe, a rack, a second elastic piece, a gear, a cam, a connecting rod, a third elastic piece, a small variable-diameter section, an equal-diameter section and a large variable-diameter section, core driving energy comes from gravitational potential energy of sediment, complete self-adaptive operation according to the actual sediment amount is achieved through the ingenious mechanical logic of gravity sensing, energy storage and sudden change release, external electric power and complex control are not needed, and the device is particularly suitable for low-energy-consumption and low-maintenance in-situ purification of high-sediment and intermittent-pollution rivers such as the Yellow River; the desilting effect is good, and the combination of efficient filtration, automatic decontamination and ecological restoration is realized.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a water purification device for environmental remediation. Background Technology

[0002] In water environment management, especially in the case of water bodies with high sediment content such as the Yellow River, purification devices face a more fundamental and challenging prerequisite problem than "how to purify": how to automatically and thoroughly remove the large amount of sediment trapped from the system? The self-cleaning logic of existing technologies largely avoids or fails to properly solve this ultimate challenge, causing the devices to often degenerate from "purifiers" into "sediment collection tanks", and eventually fail due to siltation.

[0003] Currently, purification devices with a certain degree of self-cleaning ability have revealed deep-seated flaws in their technology when dealing with silt and sand: The first common design can be called "internal circulation" cleaning, represented by various backwash filters. Its core logic is to use reverse water flow to "wash away" contaminants adhering to the filter media surface. However, for silt, this is essentially just "internal transport." Fine silt particles are briefly suspended by hydraulic disturbance, then settle again at the bottom of the equipment cavity or in dead corners due to the decrease in flow velocity, and are not truly discharged from the system. This is like sweeping dust from the center of the room to the corners, rather than sweeping it out the door. Over time, silt accumulates inside the equipment, forming clumps, which not only drastically compresses the effective volume, but its re-suspension also causes secondary pollution of the effluent. This design only solves the problem of "temporarily clear filter," but spatially transfers and delays the problem of silt treatment, ultimately still requiring manual opening and dredging. It is an incomplete "pseudo-cleaning" method with poor silt removal efficiency.

[0004] The second, more advanced approach attempts to incorporate sediment removal functionality, but its automation largely relies on external power and programmed control. For example, using electric valves to periodically open the bottom sediment removal port presents a mismatch between timing and actual flow. Sediment inflow is not uniform; the load surges during flood season and irrigation drainage periods, while the load is very low during the dry season. A fixed sediment removal frequency results in wasted water and energy consumption under low loads, while under high loads, untimely sediment removal leads to rapid clogging, also resulting in poor sediment removal efficiency.

[0005] Therefore, the "self-cleaning" capability under current technological conditions faces a dilemma when dealing with sediment: either it involves internal cleaning without discharge, which is only a temporary solution, or it relies on unintelligent mechanical discharge that cannot adapt to complex working conditions. The root cause lies in the disconnect between the "trigger signal" for cleaning (when to discharge) and the actual physical state of the sediment inside the device. They rely on external, pre-set instructions or fragile power sources, rather than utilizing the weight of the sediment itself—the most direct and reliable physical signal and energy source. Summary of the Invention

[0006] This invention provides a water purification device for environmental governance, which can solve the problem in the prior art where the timing of the discharge of silt filtered inside the water purification device is disconnected from the actual physical state of the silt inside the device, resulting in poor silt removal effect.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a water purification device for environmental remediation, comprising: The outer casing is connected to a clean water outlet pipe, and a sand discharge pipe is vertically fixedly connected to the bottom of the outer casing. A valve plate is rotatably connected inside the sand discharge pipe, and a first elastic element for driving the valve plate to reset is connected between the valve plate and the sand discharge pipe. The filter cartridge is located inside the outer shell. The upper end of the filter cartridge is connected to a mud and sand inlet pipe, and the lower end of the filter cartridge is slidably connected to a sand discharge pipe. The linkage assembly includes: a rack connected to the filter cartridge and vertically arranged; a second elastic element connected to the rack; a gear meshing with the rack; a cam coaxially arranged with the gear; a connecting rod, one end of which contacts the cam surface of the cam, and the other end of which extends into the sand discharge pipe from the lower end; and a third elastic element connected to the connecting rod. The cam surface of the cam includes a small diameter section, a constant diameter section, and a large diameter section connected in sequence.

[0008] Preferably, the bottom of the outer shell is vertically fixedly connected to a guide cylinder filled with damping medium, and a slider is vertically slidably connected inside the guide cylinder. The rack is connected to the slider, and the slider is provided with a guide hole and a throttling hole that vertically penetrate the slider. A one-way valve is provided inside the guide hole.

[0009] Preferably, the outer shell is fixedly connected to a piston cylinder located below the sand discharge pipe. Inside the piston cylinder, a piston connected to a connecting rod is vertically slidably connected. The piston cylinder is connected to an inlet pipe and an outlet pipe. The inlet pipe is connected to a purified water source. Multiple nozzles are arranged circumferentially on the inner wall of the outer shell, and the outlet pipe is connected to each nozzle.

[0010] Preferably, the upper end of the piston cylinder is connected to a purified water source via an inlet pipe, and the lower end of the piston cylinder is connected to each nozzle via an outlet pipe. A one-way valve is provided on the inlet pipe and the outlet pipe respectively.

[0011] Preferably, the connection point between the purified water outlet pipe and the outer shell is higher than the inner bottom wall of the outer shell, and the purified water source is purified water stored inside the outer shell.

[0012] Preferably, the lower end of the filter cartridge has a funnel-shaped structure.

[0013] Preferably, the vertical section of the funnel-shaped structure is provided with an annular guide groove, and the sand discharge pipe is slidably connected inside the annular guide groove.

[0014] Preferably, the sand discharge pipe is provided with a limit block inside.

[0015] Compared to existing technologies, this invention utilizes a combination of a shell, a purified water outlet pipe, a sand discharge pipe, a valve plate, a first elastic element, a filter cartridge, a muddy water inlet pipe, a rack, a second elastic element, a gear, a cam, a connecting rod, a third elastic element, a small diameter section, a constant diameter section, and a large diameter section. Muddy water enters the filter cartridge through the muddy water inlet pipe. Under the filtration effect of the filter cartridge, the mud and sand are trapped inside, and purified water is discharged from the purified water outlet pipe. As the amount of mud and sand accumulates inside the filter cartridge, its weight gradually increases, causing the rack to move downwards and compress the second elastic element. The rack, through the gear, drives the cam to rotate. The contact position between the connecting rod and the cam changes from the constant diameter section to the large diameter section. When the connecting rod contacts the large diameter section of the cam, it begins to be subjected to downward compression, and the third elastic element is simultaneously compressed, until the weight of the filter cartridge increases to the point that the connecting rod disengages from the large diameter section. Instantly, the third elastic element resets, the connecting rod contacts the small diameter section of the cam, and the end of the connecting rod extending into the sand discharge pipe moves upward under the elastic potential energy of the third elastic element, pushing open the valve plate and causing the first elastic element to store energy. The silt in the filter cartridge is discharged from the sand discharge pipe, the weight of the filter cartridge decreases, and the filter cartridge and rack move upward under the elastic potential energy of the second elastic element. The cam reverses, and the contact position between the connecting rod and the cam changes sequentially from the small diameter section, the large diameter section to the equal diameter section. The end of the connecting rod extending into the sand discharge pipe disengages from the valve plate, and the valve plate resets under the elastic potential energy of the first elastic element, sealing the sand discharge pipe and automatically filtering silt. The core driving energy of this device comes from the gravitational potential energy of the silt. Through the ingenious mechanical logic of "gravity sensing - energy storage - sudden release", it achieves fully adaptive operation according to the actual amount of silt, resulting in good sand discharge effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 3For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the main sectional view of the piston cylinder of the present invention; Figure 6 This is a side sectional view of the sand discharge pipe section of the present invention.

[0017] In the diagram: 1. Outer shell; 2. Clean water outlet pipe; 3. Sand discharge pipe; 4. Filter cartridge; 5. Sewage inlet pipe; 6. Valve plate; 7. First elastic element; 8. Rack; 9. Second elastic element; 10. Gear; 11. Connecting rod; 12. Third elastic element; 13. Small diameter section; 14. Constant diameter section; 15. Large diameter section; 16. Limiting block; 17. Guide cylinder; 18. Slider; 19. Flow guide hole; 20. Throttling hole; 21. Piston cylinder; 22. Piston; 23. Nozzle; 24. Inlet pipe; 25. Outlet pipe; 26. Annular guide groove. Detailed Implementation

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figures 1 to 3 as well as Figures 5 to 6 As shown, an environmental water purification device includes: a shell 1, a filter cartridge 4, and a linkage assembly. The filter cartridge 4 is made of stainless steel wedge wire with a gap of 0.2mm to balance water permeability and interception capacity.

[0020] The outer casing 1 is connected to a clean water outlet pipe 2. A sand discharge pipe 3 is vertically fixedly connected to the bottom of the outer casing 1. A valve plate 6 is rotatably connected inside the sand discharge pipe 3. A first elastic element 7 is connected between the valve plate 6 and the sand discharge pipe 3 to drive the valve plate 6 to reset. The filter cartridge 4 is located inside the outer casing 1. The upper end of the filter cartridge 4 is connected to a mud and sand inlet pipe 5. The lower end of the filter cartridge 4 is slidably connected to the sand discharge pipe 3.

[0021] The linkage assembly includes: a rack 8, which is connected to the filter cartridge 4 and vertically arranged; a second elastic element 9, which is connected to the rack 8; a gear 10, which meshes with the rack 8; a cam, which is coaxially arranged with the gear 10; a connecting rod 11, one end of which contacts the cam surface of the cam, and the other end of which extends into the sand discharge pipe 3 from the lower end of the sand discharge pipe 3; and a third elastic element 12, which is connected to the connecting rod 11. The cam surface of the cam includes a small diameter section 13, a constant diameter section 14, and a large diameter section 15 connected in sequence.

[0022] In practical use, the device is fixed in a suitable location in the river channel by foundations or anchors, such as the inlet of a tributary or downstream of a sewage outlet. The river water to be treated enters the filter cartridge 4 through the sediment inlet pipe 5. Under the filtration effect of the filter cartridge 4, the sediment is trapped inside, and the purified water is discharged from the purified water outlet pipe 2. As the amount of sediment accumulates inside the filter cartridge 4, its weight gradually increases, causing the rack 8 to move downwards and compress the second elastic element 9. The rack 8 drives the cam to rotate via the gear 10. The contact position between the connecting rod 11 and the cam changes from the equal diameter section 14 to the large diameter transition section 15. When the connecting rod 11 contacts the large diameter transition section 15 of the cam, the connecting rod 11 begins to be subjected to downward compression, and the third elastic element 12 is simultaneously compressed until the weight of the filter cartridge 4 increases to the instant the connecting rod 11 disengages from the large diameter transition section 15, at which point the third elastic element 12... Upon resetting, the connecting rod 11 contacts the small diameter section 13 of the cam. The end of the connecting rod 11 extending into the sand discharge pipe 3 moves upward under the elastic potential energy of the third elastic element 12, pushing open the valve plate 6 and causing the first elastic element 7 to store force. The mud and sand in the filter cartridge 4 are discharged from the sand discharge pipe 3, reducing the weight of the filter cartridge 4. The filter cartridge 4 and the rack 8 move upward under the elastic potential energy of the second elastic element 9. The cam reverses, and the contact position between the connecting rod 11 and the cam changes sequentially from the small diameter section 13, the large diameter section 15 to the equal diameter section 14. The end of the connecting rod 11 extending into the sand discharge pipe 3 disengages from the valve plate 6. The valve plate 6 resets under the elastic potential energy of the first elastic element 7, sealing the sand discharge pipe 3 and automatically filtering the mud and sand.

[0023] like Figure 3 As shown, preferably, a guide cylinder 17 filled with damping medium is vertically fixedly connected to the bottom of the outer shell 1. A slider 18 is vertically slidably connected inside the guide cylinder 17. A rack 8 is connected to the slider 18. A guide hole 19 and a throttling hole 20 are provided on the slider 18. A one-way valve is provided inside the guide hole 19. The damping medium is silicone oil. Silicone oil is incompressible and can provide stable and predictable damping force. The diameter of the throttling hole 20 is smaller than the diameter of the guide hole 19. The one-way valve only allows the damping medium in the lower part of the guide cylinder 17 to pass upward, but does not allow the damping medium in the upper part of the guide cylinder 17 to pass downward.

[0024] Specifically, as the filter cartridge 4 moves downward, the slider 18 moves downward simultaneously. The damping medium at the bottom of the guide cylinder 17 flows to the top of the guide cylinder 17 through the throttling orifice 20 and the guide hole 19. When sand discharge begins, the second elastic element 9 pre-pushes the slider 18 upward to reset. The damping medium at the top of the guide cylinder 17 can only flow slowly to the bottom of the guide cylinder 17 through the small-diameter throttling orifice 20, generating a huge damping force. This damping force makes the reset process slow (for example, set to 45 seconds). During this time, although the filter cartridge 4 becomes lighter, the valve plate 6 remains fully open, ensuring that the sediment has sufficient time to be completely discharged, thus improving the sand discharge effect.

[0025] like Figures 1 to 2 as well as Figure 5 As shown, preferably, the outer shell 1 is fixedly connected to a piston cylinder 21 located below the sand discharge pipe 3. Inside the piston cylinder 21, a piston 22 connected to the connecting rod 11 is vertically slidably connected. The piston cylinder 21 is connected to an inlet pipe 24 and an outlet pipe 25. The inlet pipe 24 is connected to a purified water source. The connection position of the purified water outlet pipe 2 to the outer shell 1 is higher than the inner bottom wall of the outer shell 1. The purified water source is purified water stored inside the outer shell 1. Multiple nozzles 23 are arranged circumferentially on the inner wall of the outer shell 1. The outlet pipe 25 is connected to each nozzle 23. One-way valves are respectively installed on the inlet pipe 24 and the outlet pipe 25. The one-way valve on the inlet pipe 24 only allows water to flow from the inlet pipe 24 to the piston cylinder 21 and cuts off the flow in the opposite direction. The one-way valve on the outlet pipe 25 only allows water to flow from the outlet pipe 25 to the nozzle 23 and cuts off the flow in the opposite direction.

[0026] Specifically, during the silt filtration process, the connecting rod 11 descends, causing the piston 22 to move synchronously, creating a negative pressure inside the piston cylinder 21, which draws purified water from the water source through the water inlet pipe 24; while during the sand discharge process, the connecting rod 11 and piston 22 return to their original position under the elastic potential energy of the third elastic element 12, pumping the purified water to each nozzle 23. The purified water sprayed from each nozzle 23 backwashes the cylinder wall of the filter cylinder 4, and the silt that has been washed off is discharged from the sand discharge pipe 3, improving the sand discharge effect.

[0027] like Figure 2 As shown, preferably, the lower end of the filter cartridge 4 has a funnel-shaped structure.

[0028] Specifically, by setting the lower end of the filter cylinder 4 into a funnel-shaped structure, it is easy for the silt to slide down the inner wall of the filter cylinder 4 to the bottom of the filter cylinder 4. On the one hand, the silt accumulates at the bottom of the filter cylinder 4, which is conducive to the complete discharge of silt; on the other hand, it is conducive to improving the fluidity of silt inside the filter cylinder 4 and reducing the clogging of the filter cylinder 4 mesh by silt.

[0029] like Figure 4As shown, preferably, the vertical section of the funnel-shaped structure is provided with an annular guide groove 26, and the sand discharge pipe 3 is slidably connected inside the annular guide groove 26, so that the lower end of the filter cylinder 4 is completely aligned with the sand discharge pipe 3 to prevent leakage.

[0030] like Figure 2 As shown, preferably, a limit block 16 is provided inside the sand discharge pipe 3.

[0031] Specifically, the limiting block 16 limits the rotation of the valve plate 6, ensuring that the valve plate 6 is in a horizontal position after being reset by the elastic action of the first elastic element 7, thereby improving the sealing effect and preventing leakage of mud, sand and purified water.

[0032] Compared to existing technologies, this invention utilizes the coordinated arrangement of a shell 1, a purified water outlet pipe 2, a sand discharge pipe 3, a valve plate 6, a first elastic element 7, a filter cartridge 4, a mud and sand inlet pipe 5, a rack 8, a second elastic element 9, a gear 10, a cam, a connecting rod 11, a third elastic element 12, a small diameter section 13, a constant diameter section 14, and a large diameter section 15. Mud and sand water enters the filter cartridge 4 from the mud and sand inlet pipe 5. Under the filtration effect of the filter cartridge 4, the mud and sand are trapped inside the filter cartridge 4, and purified water flows out from the purified water outlet pipe 2. As the amount of silt accumulates inside the filter cartridge 4, its weight gradually increases, causing the rack 8 to move downwards and compress the second elastic element 9. The rack 8 drives the cam to rotate via the gear 10. The contact position between the connecting rod 11 and the cam changes from the constant diameter section 14 to the large diameter section 15. When the connecting rod 11 contacts the large diameter section 15 of the cam, it begins to be subjected to downward compression, and the third elastic element 12 is simultaneously compressed until the weight of the filter cartridge 4 increases to the point where the connecting rod 11 and the cam... At the moment the large diameter section 15 disengages, the third elastic element 12 resets, the connecting rod 11 contacts the small diameter section 13 of the cam, and the end of the connecting rod 11 extending into the sand discharge pipe 3 moves upward under the elastic potential energy of the third elastic element 12, pushing open the valve plate 6 and causing the first elastic element 7 to store energy. The mud and sand in the filter cartridge 4 are discharged from the sand discharge pipe 3, the weight of the filter cartridge 4 decreases, and the filter cartridge 4 and the rack 8 move upward under the elastic potential energy of the second elastic element 9. The cam reverses, and the contact position between the connecting rod 11 and the cam changes sequentially from the small diameter section 13, the large diameter section 15 to the equal diameter section 14. The end of the connecting rod 11 extending into the sand discharge pipe 3 disengages from the valve plate 6, and the valve plate 6 resets under the elastic potential energy of the first elastic element 7, sealing the sand discharge pipe 3 and automatically filtering the mud and sand. The core driving energy of this device comes from the gravitational potential energy of the mud and sand. Through the ingenious mechanical logic of "gravity sensing-energy storage-sudden release", it achieves fully adaptive operation according to the actual amount of mud and sand, resulting in good sand discharge effect.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water purification device for environmental remediation, characterized in that, include: The outer casing is connected to a clean water outlet pipe, and a sand discharge pipe is vertically fixedly connected to the bottom of the outer casing. A valve plate is rotatably connected inside the sand discharge pipe, and a first elastic element for driving the valve plate to reset is connected between the valve plate and the sand discharge pipe. The filter cartridge is located inside the outer shell. The upper end of the filter cartridge is connected to a mud and sand inlet pipe, and the lower end of the filter cartridge is slidably connected to a sand discharge pipe. The linkage assembly includes: a rack connected to the filter cartridge and vertically arranged; a second elastic element connected to the rack; a gear meshing with the rack; a cam coaxially arranged with the gear; a connecting rod, one end of which contacts the cam surface of the cam, and the other end of which extends into the sand discharge pipe from the lower end; and a third elastic element connected to the connecting rod. The cam surface of the cam includes a small diameter section, a constant diameter section, and a large diameter section connected in sequence.

2. The water purification device for environmental remediation according to claim 1, characterized in that: The bottom of the outer shell is vertically fixed to a guide cylinder filled with damping medium. A slider is vertically slidably connected inside the guide cylinder. The rack is connected to the slider. The slider has a guide hole and a throttling hole that vertically penetrate the slider. A one-way valve is installed inside the guide hole.

3. The water purification device for environmental remediation according to claim 1, characterized in that: The outer shell is fixedly connected to a piston cylinder located below the sand discharge pipe. Inside the piston cylinder, a piston connected to a connecting rod is vertically slidably connected. The piston cylinder is connected to an inlet pipe and an outlet pipe. The inlet pipe is connected to a purified water source. Multiple nozzles are arranged circumferentially on the inner wall of the outer shell. The outlet pipe is connected to each nozzle.

4. The water purification device for environmental remediation according to claim 3, characterized in that: One-way valves are installed on the inlet pipe and the outlet pipe respectively.

5. The water purification device for environmental remediation according to claim 3, characterized in that: The connection point between the purified water outlet pipe and the outer casing is higher than the inner bottom wall of the outer casing, and the purified water source is purified water stored inside the outer casing.

6. The water purification device for environmental remediation according to claim 1, characterized in that: The lower end of the filter cartridge has a funnel-shaped structure.

7. The water purification device for environmental remediation according to claim 6, characterized in that: The vertical section of the funnel-shaped structure has an annular guide groove, and the sand discharge pipe is slidably connected inside the annular guide groove.

8. The water purification device for environmental remediation according to claim 1, characterized in that: The sand discharge pipe is equipped with a limit block inside.

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