A wastewater filtration mechanism based on thermal power plant

Abstract

The present invention relates to the technical field of wastewater filtration, and specifically to a wastewater filtration mechanism based on a thermal power plant. The wastewater filtration mechanism comprises a main cylinder, one end of which is fixedly connected to a supply pipe, the other end of which is fixedly connected to a clean water discharge pipe, a sewage discharge pipe being vertically distributed on one side of the clean water discharge pipe, a partition cylinder being distributed in the main cylinder, the partition cylinder being fixed on the main cylinder by turning its edge outward, a tubular ultrafiltration membrane being arranged at the axial position of the partition cylinder, one end of the tubular ultrafiltration membrane being blocked, and the other end being fixedly connected to the clean water discharge pipe, a row of cleaning units being sleeved on the tubular ultrafiltration membrane, in conventional technology, impurities scraped off the tubular ultrafiltration membrane will wander around the outside of the tubular ultrafiltration membrane, and under continuous filtration, there is a problem of secondary attachment of the impurities, the present invention scrapes off the impurities by a vortex scraper, and then the impurities are quickly sucked into a funnel cylinder, and are retained in an L-shaped neck tube after transportation, thereby effectively solving the problem of secondary attachment of impurities.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater filtration, in particular to a wastewater filtration mechanism based on a thermal power plant. Background Art

[0002] Ultrafiltration is an effective wastewater treatment technology. It is a membrane separation process that uses pressure as a driving force. Through the microporous screening on the membrane surface, impurities in the water can be effectively removed. This technology is suitable for the separation, concentration and purification of substances. It is also used in the field of wastewater filtration in thermal power plants. The ultrafiltration process does not require heating and can be operated at room temperature, saving energy. In addition, the ultrafiltration process is simple and the ultrafiltration membrane is resistant to corrosion by chemical substances. In the ultrafiltration process of thermal power plant wastewater, a tubular ultrafiltration membrane is used to filter and separate impurities and water. After a long period of filtration, an impurity layer is covered on the outer surface of the tubular ultrafiltration membrane. It is necessary to scrape off the impurity layer in time to ensure the permeability of the tubular ultrafiltration membrane. In addition, if the scraped impurities are collected in time, the secondary attachment problem caused by impurities floating around the outside of the tubular ultrafiltration membrane can be avoided. For this reason, the present invention provides a wastewater filtration mechanism based on thermal power plants. Summary of the invention

[0003] The purpose of the present invention is to provide a wastewater filtering mechanism based on a thermal power plant to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wastewater filtration mechanism based on a thermal power plant, comprising a main cylinder, one end of the main cylinder is fixedly connected to a supply pipe, the other end of the main cylinder is fixedly connected to a clean water discharge pipe, a sewage discharge pipe is vertically distributed on one side of the clean water discharge pipe, a partition cylinder is distributed in the main cylinder, the partition cylinder is fixed to the main cylinder by turning its edge outward, a cylindrical sewage collection chamber is formed between the partition cylinder and the main cylinder, and after one end of the sewage discharge pipe passes through the shell of the main cylinder, the sewage discharge pipe and the sewage collection chamber are connected, a tubular ultrafiltration membrane is arranged at the axial position of the partition cylinder, one end of the tubular ultrafiltration membrane is blocked, and the other end is The clean water discharge pipe is fixedly connected, a row of cleaning units is sleeved on the tubular ultrafiltration membrane, and two adjacent cleaning units are distributed in relative positions, the end of the supply pipe in the main tube is connected to a conversion device, and the conversion device is connected to two evenly arranged first straight columns, and the two first straight columns drive the cleaning unit to rotate by synchronously rotating, a section of blocking ring tube is removed from the spacer outside each cleaning unit, the cleaning unit and the blocking ring tube are connected, a support plate is fixed between the remaining cylinder of the spacer between two adjacent blocking ring tubes and the main tube, and the blocking ring tube rotates along with the cleaning unit by rotating in an offset manner with the remaining cylinder of the spacer.

[0005] The conversion device includes a power cover covering the end of the supply pipe, a waist tube movably sleeved on the supply pipe, and a worm gear group transmission-connected between the power cover and the waist tube. The power cover includes an annular tube, an annular plate on one side of the middle of the annular tube, and an inclined plate evenly fixedly arranged between the annular tube and the annular plate. The annular tube of the power cover is movably sleeved on an annular groove opened on the outer wall of the supply pipe.

[0006] The conversion device also includes an outer control ring plate, a guide arc column, a J-shaped spring, a driving folding column, an annular spring and an adjusting ring tube. The waist tube is fixedly sleeved with an annular spring on the outside, and the annular spring is fixedly sleeved with an adjusting ring tube on the outside. Two symmetrically distributed driving folding columns are vertically fixed on the outside of the adjusting ring tube. The ends of the two first straight columns are vertically fixedly connected to an outer control ring plate, and one end of the driving folding column is fixed on the outer control ring plate. A plurality of guide arc columns are evenly arranged on the outside of the outer control ring plate. The guide arc columns are fixed on the inner wall of the main tube, and the guide arc columns are inserted into the annular grooves provided on the outer side wall of the outer control ring plate. A plurality of J-shaped springs for intercepting and blocking are evenly arranged on the surrounding path of the driving folding column, and the J-shaped springs are fixed on the inner wall of the main tube.

[0007] The worm gear group includes a worm, a side plate frame and a vertical shaft. One end of the side plate frame is fixed on the supply pipe, and the side plate frame supports and positions the worm and the vertical shaft. One end of the vertical shaft is connected by meshing transmission with a fixed bevel gear and a bevel gear fixed at one end of the worm. The other end of the vertical shaft is connected by meshing transmission with an outer gear ring arranged on a power cover ring cylinder through a fixed gear. The spiral teeth on the worm are connected by meshing transmission with an outer gear ring arranged on the waist cylinder.

[0008] The cleaning unit includes a spiral tube, an inner gear ring, a suction head device, a cartridge frame group and a vortex scraper. The spiral tube and the cartridge frame group are both arranged between the partition tube and the tubular ultrafiltration membrane. The cartridge frame group supports the vortex scraper. One end of the spiral tube is open, and the other end is connected to the suction head device. The suction head device is distributed at one end of the vortex scraper. The inner gear ring is arranged and fixed on the inner wall of the partition tube, and the inner gear ring and the suction head device are transmission-connected. The first straight column passes through the spiral tube, the inner gear ring and the cartridge frame group respectively. The first straight column is fixedly connected to the spiral tube. Between two adjacent cleaning units, the vortex scraper in one cleaning unit passes through the inside of the spiral tube in the other cleaning unit.

[0009] The cartridge rack assembly comprises a cartridge rack, a slide plate and a pressure spring plate. The vortex scraper is a vortex-shaped curved plate body. The outer edge of the vortex scraper is in vertical contact with the outer wall of the tubular ultrafiltration membrane. The cartridge rack comprises two ring bodies and a plate body vertically fixed between the two ring bodies. One end of the slide plate is fixed on the vortex scraper, and the slide plate slides through a plate hole opened on the cartridge rack plate body. One end of the pressure spring plate is fixed on the cartridge rack, and the other end is placed on the slide plate. The cartridge rack ring body and the first straight column are fixedly connected.

[0010] The suction head device includes an L-shaped neck tube, a suction head and a gear body. One end of the L-shaped neck tube penetrates a partial section of the sealing ring tube, the other end of the L-shaped neck tube is connected to the suction head, one side of the L-shaped neck tube is fixedly connected to the spiral tube, one side of the suction head supports the gear body, and the gear body is transmission-connected to the inner gear ring.

[0011] The suction head includes a one-way valve, a funnel tube, a fan shaft, an inner frame and a fluid fan. The closed end of the funnel tube is fixedly connected to the L-shaped neck tube, and the open end of the funnel tube is perpendicular to the inner cavity of the vortex scraper. The one-way valve is fixed in the funnel tube, and the fluid fan is distributed in the funnel tube on one side of the one-way valve. One end of the fan shaft is fixedly connected to the fluid fan, and the fan shaft is movably sleeved in a through hole opened on the inner frame. One end of the inner frame is fixed on the funnel tube.

[0012] The gear body includes a column gear, an outer shaft and a disk gear. The outer shaft is movably sleeved in a protruding through hole set on the outer wall of the funnel tube. One end of the outer shaft is connected to the inner gear ring through a meshing transmission via a fixed column gear, and the other end of the outer shaft is connected to the gear fixed on the fan shaft through a meshing transmission via a fixed disk gear, and the disk gear passes through an arc plate hole opened on the funnel tube shell.

[0013] A wastewater filtration process based on a thermal power plant comprises the following steps:

[0014] Step 1: Wastewater filtration, open the valves of the supply pipe and the clean water discharge pipe, close the valve of the sewage discharge pipe, inject the wastewater into the main cylinder through the supply pipe, and then filter through the tubular ultrafiltration membrane. Impurities cover the surface of the tubular ultrafiltration membrane, and clean water penetrates into the inside of the tubular ultrafiltration membrane and is then transferred and discharged through the clean water discharge pipe;

[0015] Step 2: Self-cleaning. When the wastewater in the supply pipe is injected into the main cylinder, it will impact the conversion device. The conversion device drives the cleaning unit to rotate by driving the two first straight columns to move around. While the cleaning unit scrapes and cleans the surface of the tubular ultrafiltration membrane, the cleaning unit collects and stores the scraped impurities.

[0016] Step three: Impurity transportation. The impurity transfer work is carried out once at a certain interval. Specifically, the pipe valve of the clean water discharge pipe is closed, and the pipe valves of the supply pipe and the sewage discharge pipe are opened. Clean water is injected into the main cylinder through the supply pipe, and then the clean water is injected into the sewage collection chamber between the main cylinder and the partition cylinder through the cleaning unit. In this process, the clean water will push the impurities collected in the cleaning unit into the sewage collection chamber, and then the impurities will be transferred and discharged through the sewage discharge pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the conventional technology, the impurities scraped off the tubular ultrafiltration membrane will wander around the outside of the tubular ultrafiltration membrane. Under continuous filtration, the impurities will have the problem of secondary attachment. The present invention scrapes off the impurities through the vortex scraper, and then the impurities are quickly sucked into the funnel tube and retained in the L-shaped neck tube after transportation, which effectively solves the problem of secondary attachment of impurities.

[0019] 2. The present invention injects clean water into the main cylinder, and the clean water transports and pushes the impurities in the L-shaped neck tube, so that all the impurity fluids are injected into the sewage collection chamber, and then discharged centrally through the sewage discharge pipe, accurately locating and controlling the position of impurities from beginning to end. Compared with the comprehensive cleaning and sewage discharge method in traditional technology, the present invention only needs clean water to take away the impurities in the spiral tube, so a small amount of clean water can solve the problem of impurity transfer and discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the partition structure.

[0022] Figure 3 This is a schematic diagram of the cleaning unit location.

[0023] Figure 4 Schematic diagram of the location of tubular ultrafiltration membrane.

[0024] Figure 5 Schematic diagram of the conversion device structure.

[0025] Figure 6 Schematic diagram of the driving folding column structure.

[0026] Figure 7 Schematic diagram of the tubular ultrafiltration membrane structure.

[0027] Figure 8 Schematic diagram of the worm gear structure.

[0028] Fig. 9 Schematic diagram of the location of the sealing ring.

[0029] Fig.10 This is a schematic diagram of the cleaning unit structure.

[0030] Fig.11 Schematic diagram of the suction head device structure.

[0031] Fig.12 Schematic diagram of the sealing ring structure.

[0032] Fig.13 Schematic diagram of the suction head structure.

[0033] Fig.14 Schematic diagram of the one-way valve position.

[0034] In the figure: main cylinder 1, supply pipe 2, clean water discharge pipe 3, sewage discharge pipe 4, partition cylinder 5, tubular ultrafiltration membrane 6, cleaning unit 7, conversion device 8, first straight column 9, blocking ring cylinder 10, outer control ring plate 11, guide arc column 12, J-shaped spring 13, power cover 14, drive folding column 15, waist cylinder 16, worm group 17, annular spring 18, adjusting ring cylinder 19, worm 20, side plate frame 21, vertical shaft 22, spiral tube 23, inner gear ring 24, suction head device 25, cylinder frame group 26, vortex scraper 27, cylinder frame 28, slide plate 29, pressure spring 30, L-shaped neck tube 31, suction head 32, gear body 33, one-way valve 34, funnel cylinder 35, fan shaft 36, inner frame 37, fluid fan 38, column gear 39, outer shaft 40, disc gear 41. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 14 The present invention provides a technical solution: a wastewater filtering mechanism based on a thermal power plant, comprising a main cylinder 1, one end of the main cylinder 1 is fixedly connected with a supply pipe 2, the other end of the main cylinder 1 is fixedly connected with a clean water discharge pipe 3, a sewage discharge pipe 4 is vertically distributed on one side of the clean water discharge pipe 3, a partition 5 is distributed in the main cylinder 1, the partition 5 is fixed on the main cylinder 1 by turning the edge outward, a cylindrical sewage collection chamber is formed between the partition 5 and the main cylinder 1, and after one end of the sewage discharge pipe 4 passes through the shell of the main cylinder 1, the sewage discharge pipe 4 is connected to the sewage collection chamber, a tubular ultrafiltration membrane 6 is arranged at the axial position of the partition 5, one end of the tubular ultrafiltration membrane 6 is blocked, and the other end is fixedly connected to the clean water discharge pipe 3, a row of cleaning units 7 are sleeved on the tubular ultrafiltration membrane 6, and two adjacent cleaning units 7 is the relative position distribution. The end of the supply pipe 2 in the main cylinder 1 is connected to a conversion device 8. Two evenly arranged first straight columns 9 are connected to the conversion device 8, and the two first straight columns 9 drive the cleaning unit 7 to rotate by synchronously rotating. A section of the blocking ring tube 10 is taken off the partition 5 outside each cleaning unit 7, and the cleaning unit 7 is connected to the blocking ring tube 10. A support plate is fixed between the remaining cylinder body of the partition 5 between two adjacent blocking ring tubes 10 and the main cylinder 1, and the blocking ring tube 10 rotates with the cleaning unit 7 by rotating with the remaining cylinder body of the partition 5. Valves in the prior art are installed on the supply pipe 2, the clean water discharge pipe 3 and the sewage discharge pipe 4, and the supply pipe 2 is simultaneously externally connected to the wastewater supply mechanism and the clean water supply mechanism in the prior art.

[0037] refer to Figure 5It is understood that the conversion device 8 includes a power cover 14 covering the end of the supply pipe 2, a waist tube 16 movably sleeved on the supply pipe 2, and a worm gear group 17 transmission-connected between the power cover 14 and the waist tube 16. The power cover 14 includes an annular tube, an annular plate on one side of the middle of the annular tube, and an inclined plate evenly fixed between the annular tube and the annular plate, and the annular tube of the power cover 14 is movably sleeved on an annular groove opened on the outer wall of the supply pipe 2.

[0038] refer to Figure 5 It is understood that the conversion device 8 also includes an outer control ring plate 11, a guide arc column 12, a J-shaped spring 13, a driving folding column 15, an annular spring 18 and an adjusting ring tube 19. The waist tube 16 is fixedly sleeved with an annular spring 18 on the outside, and the annular spring 18 is fixedly sleeved with an adjusting ring tube 19 on the outside. Two symmetrically distributed driving folding columns 15 are vertically fixed on the outside of the adjusting ring tube 19. The ends of the two first straight columns 9 are vertically fixedly connected to an outer control ring plate 11, and one end of the driving folding column 15 is fixed on the outer control ring plate 11. A plurality of guide arc columns 12 are evenly arranged on the outside of the outer control ring plate 11. The guide arc columns 12 are fixed on the inner wall of the main tube 1, and the guide arc columns 12 are stuck in the annular groove opened on the outer wall of the outer control ring plate 11. A plurality of J-shaped springs 13 for intercepting and blocking are evenly arranged on the circumferential path of the driving folding column 15, and the J-shaped springs 13 are fixed on the inner wall of the main tube 1.

[0039] refer to Figure 8 It is understood that the worm group 17 includes a worm 20, a side plate frame 21 and a vertical shaft 22. One end of the side plate frame 21 is fixed on the supply pipe 2. The side plate frame 21 supports and positions the worm 20 and the vertical shaft 22. One end of the vertical shaft 22 is meshingly connected with a fixed bevel gear and a bevel gear fixed at one end of the worm 20. The other end of the vertical shaft 22 is meshingly connected with an outer gear ring arranged on the ring tube of the power cover 14 through a fixed gear. The spiral teeth on the worm 20 are meshingly connected with an outer gear ring arranged on the waist tube 16. The worm 20 and the vertical shaft 22 are respectively movably sleeved in two through holes opened on the side plate frame 21, and the waist tube 16 is inserted into a cylindrical groove opened on the outer wall of the supply pipe 2.

[0040] refer to Fig.10It is understood that the cleaning unit 7 includes a spiral tube 23, an inner gear ring 24, a suction head device 25, a cartridge frame group 26 and a vortex scraper 27. The spiral tube 23 and the cartridge frame group 26 are both arranged between the partition tube 5 and the tubular ultrafiltration membrane 6. The cartridge frame group 26 supports the vortex scraper 27. One end of the spiral tube 23 is open, and the other end is connected to the suction head device 25. The suction head device 25 is distributed at one end of the vortex scraper 27. The inner gear ring 24 is arranged and fixed on the inner wall of the partition tube 5, and the inner gear ring 24 and the suction head device 25 are transmission-connected. The first straight column 9 passes through the spiral tube 23, the inner gear ring 24 and the cartridge frame group 26 respectively. The first straight column 9 is fixedly connected to the spiral tube 23. Between two adjacent cleaning units 7, the vortex scraper 27 in one cleaning unit 7 passes through the inside of the spiral tube 23 in the other cleaning unit 7. Fig.12 In this way, all the vortex scrapers 27 in a row of cleaning units 7 scrape the surface of the tubular ultrafiltration membrane 6 in a circular motion, and the surface of the tubular ultrafiltration membrane 6 between two adjacent cleaning units 7 can be fully scraped. Fig.10 The top of the spiral tube 23 is the clean water injection port for the backwash stage.

[0041] refer to Fig.11 It is understood that the cartridge rack group 26 includes a cartridge rack 28, a slide plate 29 and a pressure spring plate 30, the vortex scraper 27 is a vortex-shaped curved plate body, the outer end edge of the vortex scraper 27 is in vertical contact with the outer wall of the tubular ultrafiltration membrane 6, the cartridge rack 28 includes two ring bodies, and a plate body vertically fixed between the two ring bodies, one end of the slide plate 29 is fixed on the vortex scraper 27, and the slide plate 29 slides through the plate hole opened on the plate body of the cartridge rack 28, one end of the pressure spring plate 30 is fixed on the cartridge rack 28, and the other end is placed on the slide plate 29, and the cartridge rack 28 ring body and the first straight column 9 are fixedly connected.

[0042] The suction head device 25 includes an L-shaped neck tube 31, a suction head 32 and a gear body 33. One end of the L-shaped neck tube 31 passes through a partial section of the sealing ring tube 10, and the other end of the L-shaped neck tube 31 is connected to the suction head 32. One side of the L-shaped neck tube 31 is fixedly connected to the spiral tube 23, and one side of the suction head 32 supports the gear body 33. The gear body 33 and the inner gear ring 24 are transmission-connected.

[0043] The suction head 32 includes a one-way valve 34, a funnel tube 35, a fan shaft 36, an inner frame 37 and a fluid fan 38. The closed end of the funnel tube 35 is fixedly connected to the L-shaped neck tube 31, and the open end of the funnel tube 35 is vertically opposite to the inner cavity of the vortex scraper 27. The one-way valve 34 is fixed in the funnel tube 35, and the fluid fan 38 is distributed in the funnel tube 35 on one side of the one-way valve 34. One end of the fan shaft 36 is fixedly connected to the fluid fan 38, and the fan shaft 36 is movably sleeved in the through hole opened on the inner frame 37. One end of the inner frame 37 is fixed on the funnel tube 35. Fig.14It is understood that the one-way valve 34 is a one-way guide valve in the prior art, and the fluid shell in the funnel tube 35 impacts through the one-way valve 34 and is then injected into the L-shaped neck tube 31 without being able to flow back.

[0044] The gear body 33 includes a column gear 39, an outer shaft 40 and a disk gear 41. The outer shaft 40 is movably sleeved in a protruding through hole set on the outer wall of the funnel tube 35. One end of the outer shaft 40 is connected to the inner gear ring 24 through a meshing transmission via a fixed column gear 39, and the other end of the outer shaft 40 is connected to the gear fixed on the fan shaft 36 through a meshing transmission via a fixed disk gear 41, and the disk gear 41 passes through an arc plate hole opened on the shell of the funnel tube 35.

[0045] A wastewater filtration process based on a thermal power plant comprises the following steps:

[0046] Step 1: Wastewater filtration, open the pipe valves of the supply pipe 2 and the clean water discharge pipe 3, close the pipe valve of the sewage discharge pipe 4, inject the wastewater into the main cylinder 1 through the supply pipe 2, and then filter through the tubular ultrafiltration membrane 6, the impurities cover the surface of the tubular ultrafiltration membrane 6, and the clean water penetrates into the inside of the tubular ultrafiltration membrane 6, and then is transferred and discharged through the clean water discharge pipe 3;

[0047] Step 2: Self-cleaning. When the wastewater in the supply pipe 2 is injected into the main cylinder 1, it will impact the conversion device 8. The conversion device 8 drives the cleaning unit 7 to rotate by driving the two first straight columns 9 to move around. While the cleaning unit 7 scrapes and cleans the surface of the tubular ultrafiltration membrane 6, the cleaning unit 7 collects and stores the scraped impurities.

[0048] Step three: Impurity transportation. The impurity transfer work is performed once at a certain interval. Specifically, the pipeline valve of the clean water discharge pipe 3 is closed, and the pipeline valves of the supply pipe 2 and the sewage discharge pipe 4 are opened. Clean water is injected into the main cylinder 1 through the supply pipe 2, and then the clean water is injected into the sewage collection chamber between the main cylinder 1 and the partition cylinder 5 through the cleaning unit 7. In this process, the clean water will push the impurities collected in the cleaning unit 7 into the sewage collection chamber, and then the impurities will be transferred and discharged through the sewage discharge pipe 4.

[0049] During the wastewater filtration process, wastewater in the supply pipe 2 is injected into the main cylinder 1. The wastewater discharged from the supply pipe 2 will first impact the power cover 14. The rotation of the power cover 14 drives the vertical shaft 22 to rotate, and then drives the waist cylinder 16 through the worm 20. The rotation of the waist cylinder 16 causes the annular spring 18 to contract and accumulate force. After the accumulated force is saturated, it is released to drive the adjusting ring cylinder 19 to rotate. The reason for the release is that the rotation pressure borne by the driving folding column 15 is greater than the elastic positioning pressure of the J-shaped spring 13, and then the driving folding column 15 can move in a circle, breaking through the interception of the J-shaped spring 13, and then encountering the interception of the next J-shaped spring 13. In this way, the frame composed of the outer control ring plate 11, the driving folding column 15 and the adjusting ring cylinder 19 rotates intermittently. In each rotation, the annular spring 18 provides sufficient release pressure, and the outer control ring plate 11 rotates intermittently to drive the first straight column 9 to circle. The first straight column 9 drives all the cleaning units 7 to work. Specifically, except for the inner gear ring 24 which is fixed, the other structures in the cleaning unit 7 are driven by the first straight column 9 to rotate synchronously. The vortex scraper 27 is pressed by the pressure spring 30 and presses against the outer wall of the tubular ultrafiltration membrane 6. The vortex scraper 27 will scrape up the impurity layer covering the surface of the tubular ultrafiltration membrane 6 during the circular motion, and the impurities gradually move along the surface of the vortex scraper 27 to the inside of the rolled vortex scraper 27 under the push of accumulation. At the same time, the fluid fan 38 rotates to make the fluid flow in a directional manner. After the external water flow passes through the inside of the vortex scraper 27, it is injected into the L-shaped neck tube 31 through the funnel tube 35. The fluid will drive the impurities attached to the vortex scraper 27, and the impurities are finally collected in the L-shaped neck tube 31. The one-way valve 34 is used to prevent the impurity fluid in the L-shaped neck tube 31 from flowing back.

[0050] The fluid fan 38 rotates because the gear body 33 moves along with the suction head 32 around the tubular ultrafiltration membrane 6, and the orbiting column gear 39 meshes with the stationary inner gear ring 24, so that the column gear 39 continuously rotates to drive the outer shaft 40, and then transmits the fan shaft 36 through the disc gear 41, and then the fan shaft 36 drives the fluid fan 38 to rotate continuously.

[0051] The specific process of impurity transfer and discharge is that after clean water is injected into the main tube 1 through the supply pipe 2, the clean water will be injected into the spiral tube 23, and then the impurities collected in the spiral tube 23 will be impacted and pushed into the L-shaped neck tube 31. The impurities cannot pass through the one-way valve 34 and can only be injected into the sewage collection chamber between the main tube 1 and the partition tube 5. In this way, the impurities in each spiral tube 23 enter the sewage collection chamber driven by the clean water flow, and then transferred and discharged through the sewage discharge pipe 4.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater filtering mechanism for a thermal power plant, comprising a main cylinder (1), characterized in that: One end of the main cylinder (1) is fixedly connected to a supply pipe (2), and the other end of the main cylinder (1) is fixedly connected to a clean water discharge pipe (3). A sewage discharge pipe (4) is vertically distributed on one side of the clean water discharge pipe (3). A partition cylinder (5) is distributed in the main cylinder (1). The partition cylinder (5) is fixed to the main cylinder (1) by turning its edge outward. A cylindrical sewage collection chamber is formed between the partition cylinder (5) and the main cylinder (1). After one end of the sewage discharge pipe (4) passes through the shell of the main cylinder (1), the sewage discharge pipe (4) and the sewage collection chamber are connected. A tubular ultrafiltration membrane (6) is arranged at the axial position of the partition cylinder (5). One end of the tubular ultrafiltration membrane (6) is blocked, and the other end is fixedly connected to the clean water discharge pipe (3). The tubular ultrafiltration membrane (6) is sleeved with a A row of cleaning units (7), and two adjacent cleaning units (7) are distributed in relative positions, the end of the supply pipe (2) in the main cylinder (1) is connected to a conversion device (8), and two uniformly annular first straight columns (9) are connected to the conversion device (8), and the two first straight columns (9) drive the cleaning unit (7) to rotate by synchronously rotating, a section of the blocking ring cylinder (10) is removed from the spacer (5) outside each cleaning unit (7), the cleaning unit (7) and the blocking ring cylinder (10) are connected, a support plate is fixed between the remaining cylinder of the spacer (5) between the two adjacent blocking ring cylinders (10) and the main cylinder (1), and the blocking ring cylinder (10) rotates along with the cleaning unit (7) by rotating in an offset manner with the remaining cylinder of the spacer (5); The conversion device (8) comprises a power cover (14) covering the end of the supply pipe (2), a waist tube (16) movably sleeved on the supply pipe (2), and a worm gear group (17) drivingly connected between the power cover (14) and the waist tube (16), the power cover (14) comprising an annular tube, an annular plate on one side of the middle of the annular tube, and an inclined plate evenly fixedly arranged between the annular tube and the annular plate, and the annular tube of the power cover (14) is movably sleeved on an annular groove provided on the outer wall of the supply pipe (2); The conversion device (8) further comprises an outer control ring plate (11), a guide arc column (12), a J-shaped spring (13), a driving folding column (15), an annular spring (18) and an adjusting ring tube (19); the waist tube (16) is externally fixed with an annular spring (18); the annular spring (18) is externally fixed with an adjusting ring tube (19); the adjusting ring tube (19) is externally vertically fixed with two symmetrically distributed driving folding columns (15); the ends of the two first straight columns (9) are both connected to an outer control ring plate (11). ) are vertically fixedly connected, and one end of the driving folding column (15) is fixed on the outer control ring plate (11), a plurality of guide arc columns (12) are evenly arranged on the outer side of the outer control ring plate (11), the guide arc columns (12) are fixed on the inner wall of the main cylinder (1), and the guide arc columns (12) are inserted into the annular grooves provided on the outer side wall of the outer control ring plate (11), and a plurality of J-shaped spring pieces (13) for intercepting and blocking are evenly arranged on the circumferential path of the driving folding column (15), and the J-shaped spring pieces (13) are fixed on the inner wall of the main cylinder (1); The worm gear group (17) comprises a worm (20), a side plate frame (21) and a vertical shaft (22); one end of the side plate frame (21) is fixed on the supply pipe (2); the side plate frame (21) supports and positions the worm (20) and the vertical shaft (22); one end of the vertical shaft (22) is meshed and driven with a bevel gear fixed to one end of the worm (20) through a fixed bevel gear; the other end of the vertical shaft (22) is meshed and driven with an outer gear ring provided on the ring tube of the power cover (14) through a fixed gear; and the spiral teeth on the worm (20) are meshed and driven with an outer gear ring provided on the waist tube (16); The cleaning unit (7) comprises a spiral tube (23), an inner gear ring (24), a suction head device (25), a cartridge frame group (26) and a vortex scraper (27). The spiral tube (23) and the cartridge frame group (26) are both arranged in a ring between the spacer tube (5) and the tubular ultrafiltration membrane (6). The cartridge frame group (26) supports the vortex scraper (27). One end of the spiral tube (23) is open, and the other end is connected to the suction head device (25). The suction head device (25) is distributed at one end of the vortex scraper (27). The inner gear ring (24) is fixedly mounted on the inner wall of the spacer (5), and the inner gear ring (24) and the suction head device (25) are transmission-connected. The first straight column (9) passes through the spiral tube (23), the inner gear ring (24) and the cylinder frame group (26) respectively. The first straight column (9) and the spiral tube (23) are fixedly connected. Between two adjacent cleaning units (7), the vortex scraper (27) in one cleaning unit (7) passes through the inside of the spiral tube (23) in the other cleaning unit (7).

2. A wastewater filtration mechanism based on a thermal power plant according to claim 1, characterized in that: The cartridge frame assembly (26) comprises a cartridge frame (28), a slide plate (29) and a pressure spring plate (30). The vortex scraper (27) is a vortex-shaped curved plate body. The outer edge of the vortex scraper (27) is in vertical contact with the outer wall of the tubular ultrafiltration membrane (6). The cartridge frame (28) comprises two ring bodies and a plate body vertically fixed between the two ring bodies. One end of the slide plate (29) is fixed to the vortex scraper (27), and the slide plate (29) slides through a plate hole opened on the plate body of the cartridge frame (28). One end of the pressure spring plate (30) is fixed to the cartridge frame (28), and the other end is placed on the slide plate (29). The cartridge frame (28) ring body and the first straight column (9) are fixedly connected.

3. The wastewater filtering mechanism based on thermal power plant according to claim 1 is characterized by: The suction head device (25) comprises an L-shaped neck tube (31), a suction head (32) and a gear body (33); one end of the L-shaped neck tube (31) penetrates a partial section of the sealing ring tube (10); the other end of the L-shaped neck tube (31) is connected to the suction head (32); one side of the L-shaped neck tube (31) is fixedly connected to the spiral tube (23); one side of the suction head (32) supports the gear body (33); and the gear body (33) is drivingly connected to the inner gear ring (24).

4. The wastewater filtering mechanism based on thermal power plant according to claim 3 is characterized by: The suction head (32) comprises a one-way valve (34), a funnel tube (35), a fan shaft (36), an inner frame (37) and a fluid fan (38); the closed end of the funnel tube (35) is fixedly connected to the L-shaped neck tube (31), and the open end of the funnel tube (35) is perpendicularly opposite to the inner cavity of the vortex scraper (27); the one-way valve (34) is fixed in the funnel tube (35); the fluid fan (38) is distributed in the funnel tube (35) on one side of the one-way valve (34); one end of the fan shaft (36) is fixedly connected to the fluid fan (38), and the fan shaft (36) is movably sleeved in a through hole provided on the inner frame (37); and one end of the inner frame (37) is fixed to the funnel tube (35).

5. The wastewater filtering mechanism based on thermal power plant according to claim 4 is characterized in that: The gear body (33) comprises a column gear (39), an outer shaft (40) and a disc gear (41); the outer shaft (40) is movably sleeved in a protruding through hole provided on the outer wall of the funnel tube (35); one end of the outer shaft (40) is meshed and transmission-connected with the inner gear ring (24) through the fixed column gear (39); the other end of the outer shaft (40) is meshed and transmission-connected with a gear fixed on the fan shaft (36) through the fixed disc gear (41); and the disc gear (41) passes through an arc-shaped plate hole provided on the shell of the funnel tube (35).

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