Environment-friendly purifying and filtering equipment for water conservancy project

Abstract

The environment-friendly purifying and filtering equipment comprises a base, a sewage bucket is fixedly connected to the left side of the top of the base, a water storage tank is fixedly connected to the right side of the base, and a gas storage tank is arranged at the position, behind the water storage tank, of the top of the base; the air flotation assembly comprises a spray head, a partition plate and a jet piece, the spray head is arranged in the sewage barrel, the middle of the spray head is hollow and provided with a pressure cavity, the middle of the pressure cavity is horizontally connected with the partition plate, and the partition plate divides the pressure cavity into an upper cavity body and a lower cavity body. The invention relates to the technical field of water conservancy projects. According to the environment-friendly purifying and filtering equipment for the water conservancy project, the air flotation assembly is arranged and can be communicated with the air storage tank and the water storage tank, sewage in the sewage bucket is subjected to air flotation treatment, meanwhile, treated water is pumped away, and most particles can suspend above the sewage during water pumping; therefore, water is pumped while air flotation water purification is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects. Specifically, it relates to an environmental protection purification and filtration device for water conservancy projects. Background Art

[0002] Water conservancy projects play an important role in modern society, not only in the management and utilization of water resources, but also in environmental protection and ecological purification. In recent years, in view of the pollution problems existing in water conservancy projects, a variety of environmental protection filtration devices have been developed. These devices aim to improve water quality, reduce water pollution, effectively remove solid particles and impurities in water, and ensure the cleanliness and safety of water resources.

[0003] Among them, the commonly used air flotation method is an efficient solid-liquid separation technology, which is widely used in sewage treatment, especially for those suspended solids and emulsified oils that are difficult to remove by natural sedimentation. Its basic principle is to introduce tiny bubbles into the sewage, make these bubbles adhere to the pollutants in the water, form a floating body with buoyancy greater than gravity, so that the pollutants float to the water surface, and finally are removed by a slag scraping device.

[0004] In the prior art, when using the air flotation method, usually in order to ensure the stability of the foam that adsorbs impurities, it is necessary to continuously add surfactants to the sewage to improve the stability of the foam layer, so as to avoid the pollutants returning to the wastewater again before the slag scraping device scrapes the foam. This way of purifying water will undoubtedly increase the cost of purifying water. Without adding surfactants, the stability of the foam layer will be greatly reduced, causing a large amount of foam to break before the slag scraping device scrapes the foam, seriously affecting the water purification efficiency of the air flotation method.

[0005] Therefore, those skilled in the art have provided an environmental protection purification and filtration device for water conservancy projects to solve the problems raised in the above background art. Summary of the Invention

[0006] The purpose of the present invention is to provide an environmental protection purification and filtration device for water conservancy projects to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: The above technical object of the present invention is achieved through the following technical solutions: An environmental protection purification and filtration device for water conservancy projects includes a base. On the left side of the top of the base, a sewage bucket is fixedly connected. On the right side of the base, a water storage tank is fixedly connected. At the rear of the water storage tank on the top of the base, an air storage tank is arranged. The air flotation assembly includes a spray head, a partition plate and a jet component. The spray head is arranged in the sewage bucket. The middle part of the spray head is hollow and provided with a pressure chamber. A partition plate is horizontally connected to the middle of the pressure chamber. The partition plate divides the pressure chamber into an upper cavity and a lower cavity. Two groups of jet components respectively communicating with the upper cavity and the lower cavity are arranged at intervals up and down on the outer peripheral wall of the spray head; The flipping assembly includes a sleeve, a frame plate, a piston and a power unit. The sleeve is connected to the middle position on the right side of the sewage bucket. A frame plate is fixedly connected to the opening position on the right side of the sleeve. Two connecting long pipes are fixedly connected in the frame plate. The ends of the two connecting long pipes far away from the frame plate are respectively communicated with an air storage tank and a water storage tank. A piston is slidably connected to the left side of the sleeve. Connecting short pipes corresponding to the positions of the two connecting long pipes are inserted into the piston. The ends of the two connecting short pipes far away from the piston are respectively communicated with the upper cavity and the lower cavity of the spray head. When the piston contacts the frame plate, the connecting short pipes are docked with the connecting long pipes, and the air storage tank and the water storage tank are respectively communicated with the upper cavity and the lower cavity. A track groove is opened on the left side inner wall of the sleeve. A rolling ball contacting the track groove is connected to the outer wall of the piston. A power unit for driving the piston to move is connected to the bottom of the sleeve; The negative pressure assembly mainly consists of a Venturi tube, a negative pressure tube, a connecting cylinder and a float. The Venturi tube is connected to the position of the connecting long pipe close to the air storage tank. The throat of the Venturi tube is communicated with the water storage tank through the negative pressure tube. The negative pressure tube is connected with a connecting cylinder above the Venturi tube. A perforated support plate is connected to the inner wall of the connecting cylinder. A float is placed on the top of the perforated support plate.

[0008] Further, the center position at the top of the perforated support plate is recessed downward to form a support surface. A pressure touch switch for controlling the power unit is connected to the middle of the support surface.

[0009] Further, the jet component includes a mesh plate, a pressure valve and a slider. A plurality of round holes are spaced apart on the outer wall of the spray head. A mesh plate is fixedly connected to the outer opening position of the round hole. A slider is slidably connected to the inner opening position of the round hole. A pressure valve for blocking the round hole is connected to the side far away from the mesh plate at the height of the slider.

[0010] Further, a through hole is opened in the middle of the slider along the axial length direction. Limiting grooves communicated with the through hole are spaced apart on the outer peripheral wall of the slider. A limiting block inserted into the limiting groove is fixedly connected to the inner wall of the round hole.

[0011] Further, the track groove includes an arc section and a horizontal section. There are two arc sections. Both arc sections are parabola-shaped and opened on both sides of the inner hole of the sleeve. The head and tail of the two arc sections are connected in sequence to form two wave peaks and wave valleys. A horizontal section is opened to the right along the axis direction of the sleeve at the wave valley position. [[ID=IS]]

[0012] Further, transition sections are opened in the front and back directions along the circumferential direction of the sleeve at the wave peak position of the arc section. The transition sections are tangent to the arc section.

[0013] Further, one end of the connecting long pipe close to the connecting short pipe protrudes to form an insertion part with the same length as the horizontal section, and a sealing airbag in contact with the inner wall of the connecting short pipe is connected to the outer peripheral wall of the insertion part.

[0014] Further, the power unit includes a telescopic rod and a connecting block. An annular groove is formed on the outer wall of the piston, a sliding groove is formed on the inner wall of the sleeve along the length direction, a connecting block is arranged in the overlapping area of the sliding groove and the annular groove, a telescopic rod is fixedly connected to the outer wall of the shelf board, and the output rod of the telescopic rod passes through the shelf board and is fixedly connected to the connecting block.

[0015] In summary, the present invention includes at least one of the following beneficial technical effects: 1. For the environmental protection purification and filtration equipment for water conservancy projects, through the arranged air flotation assembly, it can be respectively communicated with the air storage tank and the water storage tank, so that the sewage in the sewage bucket is pumped away while the sewage is being treated by air flotation, and most of the particulate matters will be suspended above the sewage when pumping water, so as to realize pumping water while purifying water by air flotation, saving the step of adding medicine to the sewage while improving the purification efficiency, and greatly reducing the purification cost; 2. For the environmental protection purification and filtration equipment for water conservancy projects, through the arranged negative pressure assembly, negative pressure can be generated in the water storage tank while purifying water by air flotation, and the clean water in the sewage bucket can be actively introduced into the water storage tank by using the pressure difference, realizing the function of automatic pumping, so as to reduce the control difficulty of the environmental protection purification and filtration equipment for water conservancy projects, and at the same time saving the cost of the water pump; 3. For the environmental protection purification and filtration equipment for water conservancy projects, through the arranged flipping assembly, the effect of interchanging the upper cavity and the lower cavity can be realized, so that the particles blocked on the mesh plate can be washed away when air is ejected, so as to realize the effect of automatic cleaning, effectively prevent the mesh plate from being blocked, and further greatly reduce the maintenance frequency of the environmental protection purification and filtration equipment for water conservancy projects and the use cost of the environmental protection purification and filtration equipment for water conservancy projects. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an environmental protection purification and filtration equipment for water conservancy projects of the present invention.

[0018] Figure 2It is a cross-sectional view of the base in a water conservancy project environmental protection purification and filtration device of the present invention.

[0019] Figure 3 It is a schematic structural diagram during the flipping process of the air flotation component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0020] Figure 4 It is a schematic structural diagram from the left side view during the flipping process of the air flotation component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the air flotation component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the jet component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0023] Figure 7 It is a schematic structural diagram of the flipping component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the insertion part in a water conservancy project environmental protection purification and filtration device of the present invention.

[0025] Figure 9 It is a perspective view of the sleeve in a water conservancy project environmental protection purification and filtration device of the present invention.

[0026] Figure 10 It is a cross-sectional view from the top-down perspective of the sleeve in a water conservancy project environmental protection purification and filtration device of the present invention.

[0027] Figure 11 It is a schematic diagram of the position of the ball during the flipping process of the air flotation component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0028] Figure 12 It is a schematic structural diagram of the negative pressure component in a water conservancy project environmental protection purification and filtration device of the present invention.

[0029] In the figure, 1 is the base; 2 is the air flotation assembly; 201 is the spray head; 202 is the partition plate; 203 is the jet component; 2031 is the mesh plate; 2032 is the pressure valve; 2033 is the slider; 3 is the flipping assembly; 301 is the sleeve; 302 is the frame plate; 303 is the piston; 304 is the power unit; 3041 is the telescopic rod; 3042 is the connecting block; 4 is the negative pressure assembly; 401 is the Venturi tube; 40,2 is the negative pressure tube; 403 is the connecting cylinder; 404 is the float; 5 is the sewage bucket; 6 is the water storage tank; 7 is the gas storage tank; 8 is the pressure chamber; 801 is the upper chamber; 802 is the lower chamber; 9 is the track groove; 901 is the arc section; 902 is the horizontal section; 903 is the transition section; 10 is the ball; 11 is the connecting long tube; 12 is the connecting short tube; 13 is the perforated support plate; 14 is the support surface; 15 is the pressure contact switch; 16 is the round hole; 17 is the through hole; 18 is the limit groove; 19 is the limit block; 20 is the insertion part; 21 is the sealing airbag; 22 is the annular groove; 23 is the sliding groove. Detailed implementation manners

[0030] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described: Embodiment

[0031] Refer to Figure 1 - Figure 12 , a water conservancy project environmental protection purification and filtration device disclosed by the present invention includes a base 1. A sewage bucket 5 is fixedly connected to the left side of the top of the base 1. A water storage tank 6 is fixedly connected to the right side of the base 1. A gas storage tank 7 is arranged behind the water storage tank 6 at the top of the base 1; An air flotation assembly 2, which includes a spray head 201, a partition plate 202 and a jet component 203. The spray head 201 is arranged in the sewage bucket 5. The middle of the spray head 201 is hollow and provided with a pressure chamber 8. A partition plate 202 is horizontally connected to the middle of the pressure chamber 8. The partition plate 202 divides the pressure chamber 8 into an upper chamber 801 and a lower chamber 802. Two groups of jet components 203 respectively communicating with the upper chamber 801 and the lower chamber 802 are arranged at intervals up and down on the outer peripheral wall of the spray head 201; The flipping assembly 3 includes a sleeve 301, a mounting plate 302, a piston 303, and a power unit 304. The sleeve 301 is connected to the middle position on the right side of the sewage bucket 5. A mounting plate 302 is fixedly connected to the opening position on the right side of the sleeve 301. Two connecting long pipes 11 are fixedly connected inside the mounting plate 302. The two ends of the two connecting long pipes 11 away from the mounting plate 302 are respectively communicated with the gas storage tank 7 and the water storage tank 6. A piston 303 is slidably connected to the left side of the sleeve 301. Connecting short pipes 12 corresponding to the positions of the two connecting long pipes 11 are inserted into the piston 303. The two ends of the two connecting short pipes 12 away from the piston 303 are respectively communicated with the upper cavity 801 and the lower cavity 802 of the nozzle 201. When the piston 303 contacts the mounting plate 302, the connecting short pipes 12 are docked with the connecting long pipes 11, and the gas storage tank 7 and the water storage tank 6 are respectively communicated with the upper cavity 801 and the lower cavity 802. A track groove 9 is opened on the left inner wall of the sleeve 301. A ball 10 in contact with the track groove 9 is connected to the outer wall of the piston 303. The bottom of the sleeve 301 is connected with a power unit 304 for driving the piston 303 to move; The negative pressure assembly 4 mainly consists of a Venturi tube 401, a negative pressure tube 402, a connecting cylinder 403, and a float 404. A Venturi tube 401 is connected to the position of the connecting long pipe 11 close to the gas storage tank 7. The throat of the Venturi tube 401 is communicated with the water storage tank 6 through the negative pressure tube 402. A connecting cylinder 403 is connected to the negative pressure tube 402 above the Venturi tube 401. A perforated support plate 13 is connected to the inner wall of the connecting cylinder 403. A float 404 is placed on the top of the perforated support plate 13.

[0032] In this embodiment, by observing Figure 1 it can be found that by connecting a sewage bucket 5 to the left side of the top of the base 1 and connecting a water storage tank 6 to the right side of the top of the base 1, the purified clean water source in the sewage bucket 5 can be pumped into the water storage tank 6, and then transferred from the water storage tank 6 to the water usage point to realize the purified use of sewage.

[0033] Subsequently, it can also be found in Figure 2 that Figure 2It is a schematic three-dimensional sectional view of the base 1 and the sewage tank 5 in the environmental protection purification and filtration equipment for water conservancy projects. At this time, it can be found that a gas storage tank 7 is connected to the rear of the water storage tank 6 at the top of the base 1. An air flotation component 2 is arranged in the sewage tank 5, which includes a spray head 201, a partition plate 202 and a jet component 203. The spray head 201 is arranged in the sewage tank 5. The middle of the spray head 201 is hollow and provided with a pressure chamber 8. A partition plate 202 is horizontally connected to the middle of the pressure chamber 8. The partition plate 202 divides the pressure chamber 8 into an upper cavity 801 and a lower cavity 802. Two groups of jet components 203 respectively communicating with the upper cavity 801 and the lower cavity 802 are arranged at intervals up and down on the outer peripheral wall of the spray head 201. Subsequently, the upper cavity 801 and the lower cavity 802 are respectively communicated with the gas storage tank 7 and the water storage tank 6, which can be used to input high-pressure air into the sewage tank 5 through a pipeline. Subsequently, the high-pressure air is discharged from the jet component 203 in the sewage tank 5, causing a large number of microbubbles to be generated in the sewage in the sewage tank 5. These bubbles can effectively adhere to the suspended substances when rising in the water, promoting their floating, and are used to concentrate the solid particles in the sewage in the upper area of the sewage tank, thereby improving the purification efficiency of the sewage.

[0034] And in Figure 2 we can see that the connecting pipe is connected to the middle of the spray head 201, and a plurality of jet components 203 are arranged at intervals on the outer wall of the spray head 201. This will cause the most air to be ejected from the jet component 203 closest to the connecting pipe. Subsequently, as the distance increases, the jet gradually weakens, which will affect the air flotation water purification effect.

[0035] So observing Figure 5 and Figure 6 it can be found that Figure 5 is a schematic three-dimensional sectional view of the air flotation component 2. Figure 6 Then it is Figure 5Schematic three-dimensional structure diagram of the position of the jet member 203. At this time, we can find that the jet member 203 includes a mesh plate 2031, a pressure valve 2032, and a slider 2033. A plurality of round holes 16 are spaced apart on the outer wall of the nozzle 201. The mesh plate 2031 is fixedly connected to the outer opening position of the round hole 16. When air is discharged through the round hole 16, the mesh plate 2031 can disperse the ejected air flow, so that a large number of microbubbles are formed in the sewage tank 5 by the ejected air flow to ensure the air flotation effect. Subsequently, a slider 2033 is slidably connected to the inner opening position of the round hole 16. A pressure valve 2032 for blocking the round hole 16 is connected to the side of the slider 2033 away from the mesh plate 2031 at a height. At this time, when air enters the upper cavity 801, the air will be blocked by the pressure valve 2032, causing the air to accumulate in the upper cavity 801. As the air accumulates, the air pressure in the upper cavity 801 will gradually increase until the pressure exceeds the threshold value of the pressure valve 2032. At this time, all the pressure valves 2032 are opened simultaneously, and the nozzles 201 jet air simultaneously, which can effectively ensure the water purification effect in the sewage tank 5.

[0036] Since the air flotation method is usually used to ensure the stability of the foam that adsorbs impurities, it is necessary to continuously add surfactants to the sewage to improve the stability of the foam layer, so as to prevent the pollutants from returning to the wastewater again before the foam is scraped off by the slag scraping equipment. This water purification method will undoubtedly increase the cost of water purification. If surfactants are not added, the stability of the foam layer will be greatly reduced, causing a large amount of foam to break before the slag scraping equipment scrapes off the foam, seriously affecting the water purification efficiency of the air flotation method.

[0037] At this time, we can see that Figure 1 a negative pressure component 4 is provided on the connecting pipe between the gas storage tank 7 and the sewage tank 5. Then look at Figure 12 and we can find that Figure 12 is the schematic structure diagram of the negative pressure component. The negative pressure component 4 mainly consists of a Venturi tube 401, a negative pressure tube 402, a connecting cylinder 403, and a float 404. The Venturi tube 401 is connected to the connecting pipe near the gas storage tank 7. The throat of the Venturi tube 401 is connected to the water storage tank 6 through the negative pressure tube 402. At this time, when there is a high-speed flow of gas in the connecting pipe, when the gas quickly passes through the Venturi tube 401, a low-pressure area will appear in the throat of the Venturi tube 401, attracting the surrounding fluid or gas to enter. Since the throat of the Venturi tube 401 is connected to the water storage tank 6 through the negative pressure tube 402, as long as the water storage tank 6 remains airtight during the non-drainage process, the air in the water storage tank 6 will gradually be pumped away by the negative pressure tube 402 until the air pressure in the water storage tank 6 approaches the air pressure in the throat of the Venturi tube 401 and then stops pumping.

[0038] When a negative pressure is generated in the water storage tank 6, a suction force will be generated in the connecting pipe between the water storage tank 6 and the sewage bucket 5 to suck the purified water in the sewage bucket into the connecting pipe. Since the negative pressure in the water storage tank 6 gradually increases, when the negative pressure increases enough to suck water into the water storage tank 6 through the connecting pipe, the air flotation process can concentrate most of the small particles in the sewage at the top of the sewage, making the middle part of the sewage in a relatively clean state, so as to ensure that the water pumped into the water storage tank 6 is purified water, realizing the simultaneous pumping of water during air flotation purification, saving the step of adding medicine to the sewage while improving the purification efficiency, and greatly reducing the cost of water purification.

[0039] Since the jet member 203 is also provided in the lower cavity 802, the negative pressure pumping in the water storage tank 6 will be interfered by the jet member 203, affecting the pumping efficiency. Therefore, in Figure 6 it can be found that a through hole 17 is opened in the middle of the slider 2033 along the axial length direction, and limiting grooves 18 communicating with the through hole 17 are spaced apart on the outer peripheral wall of the slider 2033. A limiting block 19 inserted into the limiting groove 18 is fixedly connected to the inner wall of the round hole 16. At this time, when negative pressure pumping occurs in the water storage tank 6, the water flow will exert a thrust on the pressure valve 2032, causing the slider 2033 to slide in the round hole 16, making the state of the slider 2033 in the lower cavity 802 as Figure 6 shown. At this time, water can enter the through hole 17 through the round hole 16, and then enter the lower cavity 802 through the limiting groove 18 communicating with the through hole 17, which can reduce the interference of the pressure valve 2032 on pumping.

[0040] When the purified water enters the water storage tank 6, with the replenishment of water, the space in the water storage tank 6 will be filled, thereby slightly restoring the air pressure in the water storage tank 6, so that a pressure difference is re-generated at both ends of the negative pressure pipe 402. During the aeration process in the sewage bucket 5, the air in the water storage tank 6 will be gradually pumped away, so that the purified water source can be continuously pumped into the water storage tank 6, realizing the function of automatic pumping.

[0041] Due to the suction at the throat of the Venturi tube 401, the connecting pipe and the fluid in the Venturi tube 401 need to maintain a stable flow to ensure that the changes in flow velocity and pressure conform to Bernoulli's principle. When the air storage tank 7 starts to input air into the sewage bucket 5, when these airs are injected into the connecting pipe, they will squeeze the air originally stored in the connecting pipe, so that the original air changes from static to dynamic under the squeezed state. At this time, the air in the connecting pipe is in an unstable state, and the unstable flow may cause eddy currents and turbulent flows of the air current, which will interfere with the normal operation of the Venturi tube. The disturbance of the air current may cause insufficient negative pressure at the throat and cannot effectively suck in the surrounding fluid. Even when the air at the throat is pressurized, the air at the throat will rush into the negative pressure pipe 402, resulting in the air being squeezed into the water storage tank 6, increasing the air pressure in the water storage tank 6, thus affecting the subsequent negative pressure pumping efficiency and the sewage purification efficiency.

[0042] Therefore, in Figure 12 it can also be seen that a connecting cylinder 403 is connected above the Venturi tube 401 of the negative pressure pipe 402. A perforated support plate 13 is connected to the inner wall of the connecting cylinder 403, and a float 404 is placed on the top of the perforated support plate 13. At this time, if the air at the throat position is pressurized and rushes into the negative pressure pipe 402, the air will first enter the connecting cylinder 403 and then enter the negative pressure pipe 402 through the connecting cylinder 403. At this time, the rapid upward flow of the air will exert a thrust on the bottom of the float 404, causing the float 404 to move upward in the connecting cylinder 403, thus blocking the negative pressure pipe 402, effectively preventing air backflow, and then ensuring the sewage purification efficiency.

[0043] Subsequently, when the air flow in the connecting pipe is stable, the subsequent air passing through the Venturi tube 401 will generate a stable low-pressure area at the throat, and then extract the air that originally rushed into the connecting cylinder 403, making the inside of the connecting cylinder 403 in a negative pressure state. At this time, the unsupported float 404 will move downward until it is supported by the perforated support plate 13. Subsequently, during the continuous air extraction at the throat, a low pressure will appear in the water storage tank 6, and the purified water in the sewage bucket 5 will be pumped into the water storage tank 6, effectively ensuring the water purification efficiency.

[0044] Since not all suspended particles can float up during the air flotation process, there will still be trace amounts of particles remaining in the water after water purification. Therefore, when pumping water, the mesh plate 2031 connected to the round hole 16 of the lower cavity 802 can be used as a filter screen for intercepting suspended particles, so that the water pumped into the water storage tank 6 is purified again. Finally, an activated carbon filter element (a commercially available product, not shown in the figure, as long as it is connected to the connecting pipe) is installed on the connecting pipe between the water storage tank 6 and the sewage bucket 5 to absorb harmful gases in the sewage, such as hydrogen sulfide and ammonia, and further ensure the cleanliness of the water in the water storage tank 6 by means of multiple purifications.

[0045] As the mesh plate 2031 intercepts suspended particles, the meshes of the mesh plate 2031 will gradually become blocked, affecting the subsequent pumping efficiency. Therefore, in combination with Figure 2 and Figure 7 it can be found that Figure 7 is a schematic internal structure diagram of the sleeve 301 in the flipping assembly 3. At this time, it is found that the flipping assembly 3 includes a sleeve 301, a frame plate 302, a piston 303 and a power unit 304. The sleeve 301 is connected to the middle position on the right side of the sewage bucket 5. A frame plate 302 is fixedly connected to the opening position on the right side of the sleeve 301. A piston 303 is slidably connected to the left side of the sleeve 301. Subsequently, the connecting pipe is separately provided as a connecting long pipe 11 and a connecting short pipe 12, so that one end of each of the two connecting long pipes 11 is connected to the frame plate 302, and the ends of the two connecting long pipes 11 far from the frame plate 302 are respectively communicated with the gas storage tank 7 and the water storage tank 6. One end of each of the two connecting short pipes 12 is inserted into the piston 303, and the ends of the two connecting short pipes 12 far from the piston 303 are respectively communicated with the upper cavity 801 and the lower cavity 802 of the nozzle 201. At this time, when the piston 303 contacts the frame plate 302, the connecting short pipe 12 is docked with the connecting long pipe 11, achieving the effect of communicating the gas storage tank 7 and the water storage tank 6 with the upper cavity 801 and the lower cavity 802 respectively.

[0046] Looking at this time Figure 9 and Figure 10 , Figure 9 is a perspective view of the sleeve 301. Figure 10It is a bottom view cross-sectional view of the sleeve 301. At this time, we can see that a track groove 9 is provided on the left side of the inner wall of the sleeve 301. The track groove 9 includes an arc section 901 and a horizontal section 902. There are two arc sections 901, and both arc sections 901 are formed in a parabolic shape on both sides of the inner hole of the sleeve 301. The head and tail of the two arc sections 901 are connected in sequence to form two peaks and valleys. A horizontal section 902 is opened to the right along the axis direction of the sleeve 301 at the valley position. A ball 10 in contact with the track groove 9 is connected to the outer wall of the piston 303. A power unit 304 for driving the piston 303 to move is connected to the bottom of the sleeve 301. At this time, when the power unit 304 pushes the piston 303 to move in the sleeve 301, the ball 10 will roll in the track groove 9. The ball 10 first enters the arc section 901 from the horizontal section 902, separating the connecting short pipe 12 from the connecting long pipe 11. Subsequently, the ball 10 will roll along the arc section 901, causing the piston 303 to flip. By driving the air flotation assembly 2 to flip through the connecting short pipe 12, the original upper cavity 801 becomes the lower cavity 802 communicating with the water storage tank 6, and the original lower cavity 802 becomes the upper cavity 801 communicating with the gas storage tank 7. At this time, when air is ejected through the round hole 16, the airflow will flush away the particles blocking the mesh, and then the microbubbles will carry the particles to float, achieving the effect of clearing the blockage. It can effectively prevent the mesh plate 2031 from being blocked, thereby greatly reducing the maintenance frequency of the water conservancy project environmental protection purification and filtration equipment and reducing the use cost of the water conservancy project environmental protection purification and filtration equipment.

[0047] Since during the flipping process of the piston 303, it is necessary to first separate the connecting short pipe 12 from the connecting long pipe 11, then rotate 180 degrees to complete the flipping action, and finally reset to dock the connecting short pipe 12 with the connecting long pipe 11 to avoid leakage when the fluid flows in the connecting pipe, so observe Figure 7 and Figure 8It can be found that the power unit 304 includes a telescopic rod 3041 and a connecting block 3042. An annular groove 22 is formed on the outer wall of the piston 303, and a sliding groove 23 is formed along the length direction on the inner wall of the sleeve 301. A connecting block 3042 is arranged in the overlapping area of the sliding groove 23 and the annular groove 22. The outer wall of the support plate 302 is fixedly connected with a telescopic rod 3041. The output rod of the telescopic rod 3041 passes through the support plate 302 and is fixedly connected with the connecting block 3042. At this time, whether the telescopic rod 3041 is driven by hydraulic pressure or air pressure, as long as the output rod of the telescopic rod 3041 extends, the connecting block 3042 can be pushed to slide in the sliding groove 23. And a part of the connecting block 3042 is in the annular groove 22. So when the connecting block 3042 slides, it will squeeze the side wall of the annular groove 22, causing the piston 303 to slide in the sleeve 301. After the ball 10 enters the arc section 901 from the horizontal section 902, the ball 10 will drive the piston 303 to rotate under the guidance of the arc section 901 until the ball 10 stops rolling when it enters the valley peak position. Subsequently, when the telescopic rod 3041 retracts, it pulls the ball 10 to move in the reverse direction, so that the ball continues to rotate under the traction of the arc section 901 to achieve the flipping effect.

[0048] Since the curvatures on both sides of the valley peak are the same, when the ball 10 is at the valley peak position, there is a probability that the ball 10 will return along the original path during the process of moving back, resulting in the failure of the flipping effect. Therefore, observe Figure 9 and Figure 10 It can be found that transition sections 903 are formed in the circumferential direction before and after at the peak position of the arc section 901 along the sleeve 301. The transition sections 903 are tangent to the arc section 901. When the telescopic rod 3041 pushes the ball 10 to the valley peak position, the air floating assembly 2 will continue to flip a short distance under the action of rotational inertia (for the state of the air floating assembly 2, refer to Figure 3 and Figure 4 the state, and the position of the ball 10 is as Figure 11 shown), so that the ball 10 enters the transition section 903. At this time, the position where the ball 10 is located is no longer the vertex position of the valley peak. At this time, when the ball 10 moves back, it can continue to move forward along the path of the arc section 901 until the flipping is completed, which can effectively ensure the stability of the flipping effect.

[0049] In a further preferred embodiment of the present invention, as Figure 12 shown, the top center position of the perforated support plate 13 is recessed downward to form a support surface 14. A pressure contact switch 15 for controlling the power unit 304 is connected to the middle of the support surface 14.

[0050] In this embodiment, when air is pumped out of the negative pressure pipe 402, the air in the connecting cylinder 403 will flow downward. At this time, the air exerts a downward pressure on the top of the float 404, pressing the float 404 against the perforated support plate 13. Therefore, observing Figure 12 it can be found that by recessing downward at the central position of the top of the perforated support plate 13 to form a support surface 14, a pressure contact switch 15 for controlling the power unit 304 is connected to the middle of the support surface 14. At this time, the float 404 will directly enter the support surface 14 under the action of wind pressure, and then press the pressure contact switch 15 to enter the preparation state for the flipping stage.

[0051] When the water purification process ends, with the closing of the air storage tank 7, the air pressure in the Venturi tube 401 returns to balance, and the pressure applied to the float 404 disappears. At this time, the pressure contact switch 15 pops up, completing a pressing action of the switch, thereby generating an electrical signal for controlling the power unit 304, causing the power unit 304 to operate and control the air flotation assembly 2 to flip, eliminating the manual active operation process and further reducing the usage difficulty of the water conservancy project environmental protection purification and filtration equipment.

[0052] In a further preferred embodiment of the present invention, as Figure 8 shown, one end of the connecting long pipe 11 close to the connecting short pipe 12 protrudes to form an insertion portion 20 having the same length as the horizontal section 902, and a sealing airbag 21 in contact with the inner wall of the connecting short pipe 12 is connected to the outer peripheral wall of the insertion portion 20.

[0053] In this embodiment, since the connecting short pipe 12 and the connecting long pipe 11 are separately provided, there will be an assembly gap between the connecting short pipe 12 and the connecting long pipe 11, affecting the sealing performance during fluid flow.

[0054] So observing Figure 8 it can be found that by protruding one end of the connecting long pipe 11 close to the connecting short pipe 12 to form an insertion portion 20 having the same length as the horizontal section 902, a groove is provided on the outer peripheral wall of the insertion portion 20, and a sealing airbag 21 in contact with the inner wall of the connecting short pipe 12 is connected in the groove. At this time, when the insertion portion 20 is inserted into the connecting short pipe 12, the sealing airbag 21 will contact the inner wall of the connecting short pipe 12 to achieve preliminary sealing.

[0055] When the pressure at the insertion joint increases, under the extrusion of the pressure, the sealing airbag 21 will deform, making the outer wall of the sealing airbag 21 fit more closely with the inner wall of the connecting short pipe 12, thereby improving the sealing performance to ensure the sealing effect.

[0056] When the pressure at the insertion joint decreases, due to the limitation of the inner wall of the groove, the sealing airbag 21 cannot be stretched, so the sealing performance between the sealing airbag 21 and the connecting short tube 12 will not be affected. At the same time, the existence of negative pressure makes the fluid not actively apply pressure to the sealing airbag 21, which can also ensure the stability of the sealing performance.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmental protection purification and filtration device for water conservancy projects, characterized in that, It includes a base (1). On the left side of the top of the base (1), a sewage bucket (5) is fixedly connected. On the right side of the base (1), a water storage tank (6) is fixedly connected. On the top of the base (1) and behind the water storage tank (6), an air storage tank (7) is arranged. An air flotation assembly (2), which includes a spray head (201), a partition plate (202) and a jet component (203). The spray head (201) is arranged in the sewage bucket (5). The middle of the spray head (201) is hollowly provided with a pressure chamber (8). Horizontally connected in the middle of the pressure chamber (8) is a partition plate (202). The partition plate (202) divides the pressure chamber (8) into an upper chamber (801) and a lower chamber (802). On the outer peripheral wall of the spray head (201), two groups of jet components (203) are arranged at intervals up and down and are respectively communicated with the upper chamber (801) and the lower chamber (802). A flipping assembly (3), which includes a sleeve (301), a frame plate (302), a piston (303) and a power unit (304). The sleeve (301) is connected to the middle position on the right side of the sewage bucket (5). At the opening position on the right side of the sleeve (301), a frame plate (302) is fixedly connected. Two connecting long pipes (11) are fixedly connected in the frame plate (302). The ends of the two connecting long pipes (11) far away from the frame plate (302) are respectively communicated with the air storage tank (7) and the water storage tank (6). A piston (303) is slidably connected to the left side of the sleeve (301). Inserted in the piston (303) are connecting short pipes (12) corresponding to the positions of the two connecting long pipes (11). The ends of the two connecting short pipes (12) far away from the piston (303) are respectively communicated with the upper chamber (801) and the lower chamber (802) of the spray head (201). When the piston (303) contacts the frame plate (302), the connecting short pipes (12) are docked with the connecting long pipes (11), and the air storage tank (7) and the water storage tank (6) are respectively communicated with the upper chamber (801) and the lower chamber (802). On the left side of the inner wall of the sleeve (301), a track groove (9) is opened. The outer wall of the piston (303) is connected with a ball (10) in contact with the track groove (9). The bottom of the sleeve (301) is connected with a power unit (304) for driving the piston (303) to move. A negative pressure assembly (4), which is mainly composed of a Venturi tube (401), a negative pressure tube (402), a connecting cylinder (403) and a float (404). A Venturi tube (401) is connected to the position of the connecting long pipe (11) close to the air storage tank (7). The throat of the Venturi tube (401) is communicated with the water storage tank (6) through a negative pressure tube (402). Above the Venturi tube (401), the negative pressure tube (402) is connected with a connecting cylinder (403). An inner wall of the connecting cylinder (403) is connected with a perforated support plate (13). On the top of the perforated support plate (13), a float (404) is placed.

2. The water conservancy project environmental protection purification and filtration equipment according to claim 1, characterized in that, The top center position of the perforated support plate (13) is recessed downward to form a support surface (14). In the middle of the support surface (14), a pressure touch switch (15) for controlling the power unit (304) is connected.

3. The water conservancy project environmental protection purification and filtration equipment according to claim 2, characterized in that, The jet component (203) includes a mesh plate (2031), a pressure valve (2032) and a slider (2033). A plurality of round holes (16) are spaced apart on the outer wall of the nozzle (201). The mesh plate (2031) is fixedly connected to the outer opening position of the round hole (16), and the slider (2033) is slidably connected to the inner opening position of the round hole (16). A pressure valve (2032) for blocking the round hole (16) is connected to the side of the slider (2033) away from the mesh plate (2031) at a height.

4. The water conservancy project environmental protection purification and filtration equipment according to claim 3, characterized in that, A through hole (17) is formed in the middle of the slider (2033) along the axial length direction, and limiting grooves (18) communicating with the through hole (17) are spaced apart on the outer peripheral wall of the slider (2033). A limiting block (19) inserted into the limiting groove (18) is fixedly connected to the inner wall of the round hole (16).

5. The water conservancy project environmental protection purification and filtration equipment according to claim 4, characterized in that, The track groove (9) includes an arc section (901) and a horizontal section (902). There are two arc sections (901), and both arc sections (901) are formed in a parabolic shape on both sides of the inner hole of the sleeve (301). The heads and tails of the two arc sections (901) are connected in sequence to form two peaks and valleys. A horizontal section (902) is opened to the right along the axis direction of the sleeve (301) at the valley position.

6. A water conservancy project environmental protection purification and filtration device according to claim 5, characterized in that, Transition sections (903) are formed in the circumferential direction of the sleeve (301) before and after at the peak position of the arc section (901), and the transition sections (903) are tangent to the arc section (901).

7. The water conservancy project environmental protection purification and filtration equipment according to claim 6, characterized in that, One end of the connecting long pipe (11) close to the connecting short pipe (12) protrudes to form an insertion part (20) with the same length as the horizontal section (902). A sealing airbag (21) in contact with the inner wall of the connecting short pipe (12) is connected to the outer peripheral wall of the insertion part (20).

8. The water conservancy project environmental protection purification and filtration equipment according to claim 7, characterized in that, The power unit (304) includes a telescopic rod (3041) and a connecting block (3042). An annular groove (22) is formed on the outer wall of the piston (303). A chute (23) is formed in the inner wall of the sleeve (301) along the length direction. A connecting block (3042) is arranged in the overlapping area of the chute (23) and the annular groove (22). A telescopic rod (3041) is fixedly connected to the outer wall of the frame plate (302). The output rod of the telescopic rod (3041) passes through the frame plate (302) and is fixedly connected to the connecting block (3042).

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