A high-efficiency municipal wastewater treatment device

Abstract

The present invention relates to the technical field of wastewater treatment, and in particular, to a highly efficient municipal wastewater treatment device. The device comprises a reactor and a stirring device installed at the inner end of the reactor. The present invention accelerates the reaction speed of the mixed solution and improves the municipal wastewater treatment efficiency by means of the stirring function of the stirring component and the stirring rod in real time. At the same time, the foam scraping component is arranged to move up and down in coordination with the driving of the stirring component, and the foam generated during the reaction of the mixed solution is brought out of the surface position in time to avoid the foam from forming a covering layer, hindering the contact between gas and liquid, and reducing the treatment efficiency. The foam carried by the foam scraping component is removed by the foam driving component so that the foam scraping component can perform secondary foam removal.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a high-efficiency municipal wastewater treatment device. Background Art

[0002] Municipal wastewater refers to wastewater discharged by urban residents in their daily life activities. This wastewater is mainly polluted by domestic waste and human excrement. The amount, composition and concentration of pollutants are related to people's living habits and water consumption. Domestic sewage generally does not contain toxic substances, but it has conditions suitable for the reproduction of microorganisms and contains a large number of bacteria and pathogens. From a hygienic point of view, it has certain hazards.

[0003] Due to the continuous increase in urban population, the problem of urban domestic wastewater treatment has become increasingly prominent. Due to backward technology, shortage of funds and difficulty in governance, it has been affecting the urban environment and its construction. If these problems are not solved as soon as possible, then with the advancement of urbanization and the continuous increase in water consumption, pollution will become more serious and the impact will be even worse.

[0004] In the process of municipal sewage treatment, due to the presence of a large number of microorganisms in the sewage, a chemical reaction will occur after the treatment reagent is added, resulting in a large amount of foam on the surface of the sewage, forming a foam layer, which hinders the contact between gas and liquid and reduces the treatment efficiency. At the same time, the foam layer will form a covering layer on the surface of the equipment, causing equipment blockage, corrosion and damage, and increasing maintenance costs. The foam layer will increase the surface area of ​​the sewage and increase the contact area between oxygen and sewage, resulting in oxygen waste.

[0005] In order to deal with the above problems, there is an urgent need for an efficient municipal wastewater treatment device. Summary of the invention

[0006] The object of the present invention is to provide a high-efficiency municipal wastewater treatment device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, a high-efficiency municipal wastewater treatment device is provided, comprising a reactor and a stirring device installed at the inner end of the reactor, wherein the reactor comprises a shell for storing wastewater and reaction reagents, the stirring device comprises a stirring rod for stirring the wastewater and reaction reagents and a stirring assembly for providing power to the stirring rod, a foam scraping assembly is arranged at the top of the stirring assembly, when the stirring rod is driven by the stirring assembly to rotate forward, the foam scraping assembly moves from the highest point to the lowest point and is immersed in the mixed solution of wastewater and reaction reagents, when the stirring rod rotates in the reverse direction, the foam scraping assembly moves from the lowest point to the highest point, and in the process, the foam generated on the surface of the mixed solution is brought upward out of the surface of the mixed solution;

[0008] The outer shell is provided with a foam driving component at one end located at the highest point of movement of the foam scraping component, and a collecting component is provided at the other end, and the two ends of the foam scraping component are respectively connected with the foam driving component and the collecting component, and when the foam scraping component carries the floating foam to the highest point, the foam driving component provides a cleaning liquid with kinetic energy to the surface of the foam scraping component, driving the floating foam on its surface to move to the inner end of the collecting component.

[0009] As a further improvement of the present technical solution, the stirring assembly includes a servo motor and a screw rod coaxially connected to the bottom end of the servo motor, a top cover is provided on the top of the outer shell, the servo motor is fixed on the inner side of the top cover, one end of the screw rod is coaxially connected to the servo motor, and the other end extends into the inner end of the outer shell and is coaxially connected to the stirring rod.

[0010] As a further improvement of the present technical solution, the froth scraping assembly includes a froth plate, which is sleeved on the outside of the screw rod and threadedly connected to the screw rod. The outside of the froth plate is in close contact with the inside of the outer shell. Inner rods are provided on both sides of the inner end of the outer shell. Slide grooves are provided on both sides of the froth plate that are slidably connected to the inner rods at corresponding positions. A plurality of froth-inducing grooves are provided on the top of the froth plate for the free entry and exit of the mixed solution.

[0011] As a further improvement of the present technical solution, the foam removal component includes a liquid pump and a liquid tank, one end of the liquid pump is connected to the inner end of the shell, and the other end of the liquid pump is connected to the inner end of the liquid tank.

[0012] As a further improvement of the present technical solution, an inner cylinder is provided on the outer side of the outer shell near one end of the liquid pump, one end of the inner cylinder is maintained in communication with the inner end of the outer shell, and a top plate is provided on the other end of the inner cylinder, the end of the liquid pump is connected to an outer tube, the outer tube is rotatably connected to the outside of the outer shell, the end of the top plate extends into the inner end position of the outer tube, and a partition is provided on the inner end of the outer tube, a connecting hole maintained in communication with the end of the liquid pump is opened on the side of the partition near the top position, a connecting pipe is connected between the inner side of the top plate and the inner end of the inner cylinder, one end of the connecting pipe is maintained in communication with the inner end of the inner cylinder, the other end of the connecting pipe protrudes from the side of the top plate and is maintained in communication with the inner end of the connecting hole, a driving assembly is connected between the outer side of the outer tube and the screw rod, and when the screw rod drives the floating foam plate to move to the highest point, the outer tube is driven to rotate by the driving assembly, so that the connecting hole moves to a position aligned with the end of the connecting tube.

[0013] As a further improvement of the present technical solution, the drive assembly includes a longitudinal gear plate and a transverse gear ring. The longitudinal gear plate is arranged on the outside of the outer tube and is coaxially connected to the outer tube. The transverse gear ring is sleeved on the outside of the screw rod near the top end, and the transverse gear ring is meshed with the longitudinal gear plate.

[0014] As a further improvement of the technical solution, a plurality of top rods are arranged on the top of the foam plate, a gap is reserved between two of the top rods, the foam-inducing grooves are distributed in sequence at the inner ends of the gaps, side openings connected to the inner ends of the inner tubes are provided at both ends of the side surfaces of the inner rods close to the inner tubes, inner arc grooves connected to the side openings are provided on both sides of the inner ends of the slide grooves, the ends of the inner arc grooves are connected to a plurality of guide grooves, and the ends of the guide grooves are respectively connected to the inner ends of the gaps.

[0015] As a further improvement of the technical solution, a bottom ring is provided at the bottom of the foam tray, the cross-section of the bottom ring is a right-angled triangle structure, one of the right-angled sides of the bottom ring is kept in contact with the bottom of the foam tray, and the other right-angled side of the bottom ring is kept in contact with the inner wall of the outer shell.

[0016] As a further improvement of the present technical solution, the collecting assembly includes an outer frame, which is fixed on the outer side of the outer shell near the top, and a pair of foam discharge grooves are provided at one end of the outer side of the outer shell, foam collecting plates are provided on both sides of the top of the outer frame, and a leakage groove connected to the foam discharge groove is provided on the foam collecting plate near the top, and a notch connected to the foam discharge groove is provided on one side of the top of the floating foam plate.

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

[0018] 1. In the high-efficiency municipal wastewater treatment device, the stirring assembly and the stirring rod are used to stir the mixed solution in real time, thereby accelerating the reaction speed of the mixed solution and improving the municipal wastewater treatment efficiency. At the same time, the scraper assembly is driven by the stirring assembly to move up and down, and the foam generated during the reaction of the mixed solution is brought out of the surface position in time to avoid the foam from forming a covering layer, hindering the contact between gas and liquid, and reducing the treatment efficiency. The foam driven assembly is used to remove the foam carried by the scraper assembly so that the scraper assembly can perform secondary defoaming work.

[0019] 2. In the high-efficiency municipal wastewater treatment device, a top rod is provided to form a partition at the top of the foam plate to isolate the foam at various positions, and a channel for the foam to flow is formed through the partition, and each partition is connected with the guide groove port position at the corresponding position, so that the cleaning liquid discharged from the guide groove can directly contact the foam, and drive the foam to flow along the partition to the inner end of the collection component, so as to discharge the cleaning liquid in a direction and improve the foam collection efficiency.

[0020] 3. In the high-efficiency municipal wastewater treatment device, a ring-shaped scraping surface is formed at the bottom end of the froth tray by a bottom ring. When the froth tray moves downward after completing the froth removal work, the bottom ring slides on the inner wall of the shell to scrape off the residual mixed solution adhering to the inner wall of the shell, thereby preventing the residual mixed solution from adhering to and affecting the subsequent cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the reactor of the present invention;

[0024] Figure 4 It is a split cross-sectional view of the housing structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 A local enlarged view of point A;

[0026] Figure 6 For the present invention Figure 4 A partial enlarged view of point B;

[0027] Figure 7 It is a schematic diagram of the external frame structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the stirring device of the present invention;

[0029] Fig. 9 It is a schematic diagram of the screw rod structure of the present invention;

[0030] Fig.10 It is a cross-sectional view of the structure of the foam tray of the present invention;

[0031] Fig.11 For the present invention Fig.10 A partial enlarged view of point C.

[0032] The meaning of each number in the figure is:

[0033] 10. Reactor; 110. Shell; 111. Inner rod; 1111. Side port; 112. Foam discharge groove; 113. Inner tube; 114. Top plate; 115. Connecting pipe; 116. Outer tube; 117. Partition plate; 1171. Connecting hole; 118. Longitudinal gear plate; 120. Top cover; 130. Liquid pump; 140. Liquid tank; 150. Outer frame; 151. Foam collecting plate; 1511. Leakage groove;

[0034] 20. stirring device; 210. servo motor; 220. screw rod; 221. stirring rod; 222. transverse gear ring; 230. foam plate; 231. push rod; 232. foam guide groove; 233. slide groove; 234. inner arc groove; 235. guide groove; 236. bottom ring. 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 embodiments of 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] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] See also Figure 1-Figure 11 As shown, a high-efficiency municipal wastewater treatment device is provided, comprising a reactor 10 and a stirring device 20 installed at the inner end of the reactor 10, the reactor 10 comprising a housing 110 for storing wastewater and reaction reagents, the stirring device 20 comprising a stirring rod 221 for stirring the wastewater and reaction reagents and a stirring assembly for providing power to the stirring rod 221, a foam scraping assembly is arranged at the top of the stirring assembly, when the stirring rod 221 is driven by the stirring assembly to rotate forward, the foam scraping assembly moves from the highest point to the lowest point and is immersed in the mixed solution of the wastewater and the reaction reagent, when the stirring rod 221 rotates in the reverse direction, the foam scraping assembly moves from the lowest point to the highest point, and in the process, the foam generated on the surface of the mixed solution is brought upward out of the surface of the mixed solution;

[0038] The outer shell 110 is located at the highest point of the movement of the scraper assembly, and is provided with a foam driving assembly at one end, and a collecting assembly at the other end. The two ends of the scraper assembly are respectively connected to the foam driving assembly and the collecting assembly. When the scraper assembly carries the floating foam to the highest point, the foam driving assembly provides a cleaning liquid with kinetic energy to the surface of the scraper assembly, driving the floating foam on its surface to move to the inner end of the collecting assembly.

[0039] In the process of treating municipal sewage, the sewage to be treated is first injected into the inner end of the shell 110, and an appropriate amount of reaction reagent is added to the inner end of the shell 110 to react chemically with it to remove pollutants in the municipal sewage. In order to increase the reaction rate of the two, the stirring rod 221 is driven to rotate by the stirring component, and the stirring rod 221 is located at the bottom end of the shell 110. During its rotation, the mixed solution of the two is agitated to accelerate the reaction rate of the mixed solution. In the process of the stirring component driving the stirring rod 221 to rotate forward, the scraper component is driven to move from the highest point of the inner end of the shell 110 to the lowest point. At this time, the entire scraper component is immersed in the mixed solution. In this process, the mixed solution undergoes a chemical reaction, and a large amount of The foam is driven by the stirring assembly to drive the stirring rod 221 to rotate in the opposite direction, continue to stir the reaction solution, and drive the scraper assembly to return from the lowest point to the highest point. When the scraper assembly is separated from the mixed solution, the top of the scraper assembly will bring out the foam floating on the surface of the mixed solution, and carry the floating foam upward to the highest point. The shell 110 is located at both ends of the highest point of the scraper assembly and is respectively provided with a foam driving assembly and a collecting assembly, and the two ends of the scraper assembly are respectively connected to the foam driving assembly and the collecting assembly. When the scraper assembly reaches the highest point, the cleaning liquid with kinetic energy is increased to the top surface of the scraper assembly through the foam driving assembly, so that the cleaning liquid contacts the floating foam on the top surface of the scraper assembly, and drives the floating foam to move toward the connection between the collecting assembly and the scraper assembly until it flows to the inner end of the collecting assembly.

[0040] The present invention accelerates the reaction speed of the mixed solution and improves the municipal wastewater treatment efficiency by means of the stirring component and the stirring rod 221 that are set to stir the mixed solution in real time. At the same time, the scraping component is set to move up and down in coordination with the driving of the stirring component, so that the floating foam generated during the reaction of the mixed solution is brought out of its surface position in time to avoid the floating foam from forming a covering layer, hindering the contact between gas and liquid and reducing the treatment efficiency. The floating foam carried by the scraping component is removed by the foam driving component so that the scraping component can perform secondary defoaming work.

[0041] In addition, the stirring assembly includes a servo motor 210 and a screw rod 220 coaxially connected to the bottom end of the servo motor 210. A top cover 120 is provided at the top of the outer shell 110. The servo motor 210 is fixed on the inner side of the top cover 120. One end of the screw rod 220 is coaxially connected to the servo motor 210, and the other end extends into the inner end of the outer shell 110 and is coaxially connected to the stirring rod 221. During the stirring process of the mixed solution, the servo motor 210 is first turned on, and the servo motor 210 rotates forward, synchronously driving the screw rod 220 and the stirring rod 221 to rotate in the same direction. The stirring rod 221 rotates to form a vortex inside the mixed solution, stirring the deposits at the inner end of the mixed solution, thereby improving the contact efficiency between the wastewater and the reaction reagent and accelerating the reaction speed of the mixed solution.

[0042] Furthermore, the froth scraping assembly includes a froth plate 230, which is sleeved on the outside of the screw rod 220 and is threadedly connected to the screw rod 220, the outside of the froth plate 230 is kept in contact with the inside of the shell 110, the inner rods 111 are arranged on both sides of the inner end of the shell 110, and the froth plate 230 is provided with slide grooves 233 that are slidably connected to the inner rods 111 at corresponding positions on both sides, and a plurality of froth guide grooves 232 for free entry and exit of the mixed solution are provided on the top of the froth plate 230. When the servo motor 210 drives the stirring rod 221 to rotate forwardly through the screw rod 220, the froth plate 230 is coaxially connected to the screw rod 220, and the slide grooves 233 respectively provided on both sides of the froth plate 230 are stuck in the inner rods 111 at corresponding positions. 1 inner end, the screw rod 220 rotates forward, which will drive the foam plate 230 to move vertically downward along the inner end of the shell 110, and move from the highest point to the lowest point, so that the foam plate 230 is immersed in the inner end of the mixture, and the mixed solution overflows upward from the top position of the foam plate 230 through the slide groove 233 opened at the top of the foam plate 230. As the mixed solution continues to react, a large amount of foam will be generated on the surface of the mixed solution. Then, the servo motor 210 drives the screw rod 220 to rotate in the opposite direction, so that the foam plate 230 moves vertically upward along the inner end of the shell 110 until the foam plate 230 is separated from the inner end of the mixed solution. At this time, the foam will adhere to the top of the foam plate 230 and move out of the surface of the mixed solution with the foam plate 230, thereby completing the foam removal work.

[0043] Furthermore, the foam-removing component includes a liquid pump 130 and a liquid tank 140. One end of the liquid pump 130 is connected to the inner end of the outer shell 110, and the other end of the liquid pump 130 is connected to the inner end of the liquid tank 140. When the foam tray 230 moves to the highest point with the foam, the liquid pump 130 is started, and the cleaning liquid stored in the inner end of the liquid tank 140 is extracted by the liquid pump 130, and the extracted cleaning liquid is sprayed into the inner end of the outer shell 110. Since the end of the liquid pump 130 is aligned with the top position of the foam tray 230 at the highest point, the sprayed cleaning liquid will flow along the surface of the foam tray 230 and drive the foam on the flow path, so that it flows into the inner end of the collection component along with the cleaning liquid for centralized collection, and the top surface of the foam tray 230 is cleaned in time.

[0044] Specifically, an inner tube 113 is provided on the outer side of the shell 110 near one end of the liquid pump 130, one end of the inner tube 113 is connected to the inner end of the shell 110, and a top plate 114 is provided on the other end of the inner tube 113. The end of the liquid pump 130 is connected to an outer tube 116, and the outer tube 116 is rotatably connected to the outer side of the shell 110. The end of the top plate 114 extends to the inner end of the outer tube 116, and a partition 117 is provided on the inner end of the outer tube 116. A connecting hole 1171 connected to the end of the liquid pump 130 is provided on the side of the partition 117 near the top position. A connecting tube 115 is connected between the inner side of the top plate 114 and the inner end of the inner tube 113, one end of the connecting tube 115 is connected to the inner end of the inner tube 113, and the other end of the connecting tube 115 protrudes from the side of the top plate 114 and is connected to the inner end of the connecting hole 1171. A driving assembly is connected between the outer side of the outer tube 116 and the screw rod 220. When the screw rod 220 is driven by the screw rod 220, a connecting hole 1171 is provided on the side of the partition 117 near the top position. When the movable froth plate 230 moves to the highest point, the driving assembly drives the outer tube 116 to rotate, so that the connecting hole 1171 moves to a position aligned with the end of the connecting tube 115. In the process of the screw rod 220 driving the froth plate 230 to move from the lowest point to the highest point, the driving assembly drives the outer tube 116 to rotate. Before this, the connecting hole 1171 and the connecting tube 115 are staggered, and the outer tube 116 and the inner end of the inner tube 113 remain in a sealed state, and no cleaning liquid passes through until the froth plate 230 reaches the highest point. At this time, the connecting hole 1171 just moves to a position aligned with the port of the connecting tube 115. At this time, the liquid pump 130 injects the cleaning liquid stored at the inner end of the liquid tank 140 into the inner end of the inner tube 113 through the outer tube 116, and injects it into the top surface of the froth plate 230 along the port position of the inner tube 113, so as to remove the froth carried by the top of the froth plate 230.

[0045] In addition, the drive assembly includes a longitudinal gear disc 118 and a transverse gear ring 222. The longitudinal gear disc 118 is arranged on the outside of the outer tube 116 and maintains a coaxial connection with the outer tube 116. The transverse gear ring 222 is sleeved on the outside of the screw rod 220 near the top position, and the transverse gear ring 222 maintains an engaged connection with the longitudinal gear disc 118. During the rotation of the screw rod 220, since the transverse gear ring 222 is meshed with the longitudinal gear plate 118, when the screw rod 220 drives the transverse gear ring 222 to rotate synchronously, the longitudinal gear plate 118 will be driven to rotate, and the longitudinal gear plate 118 drives the outer tube 116 to rotate synchronously along the outer side of the shell 110, so that the partition plate 117 at the inner end of the outer tube 116 is adjusted in position to change the alignment position of the connecting hole 1171 with the port of the connecting tube 115, so that when the foam plate 230 moves to the highest point, the connecting hole 1171 just moves to align with the port of the connecting tube 115, prompting the liquid pump 130 to maintain communication with the inner end of the inner tube 113, so that the cleaning liquid is smoothly introduced into the surface of the foam plate 230, and the foam cleaning work is completed.

[0046] Since the top of the foam plate 230 is in a horizontal state, the foam attached to the top of the foam plate 230 has an uncertain flow direction after being washed by the cleaning liquid, and it is easy to collide with the outer wall of the foam plate 230, resulting in a greatly reduced efficiency of the cleaning liquid being discharged into the inner end of the collection component. Furthermore, a plurality of top rods 231 are provided at the top of the foam plate 230, and a gap is reserved between the two top rods 231. Each foam-inducing groove 232 is sequentially distributed at the inner end of each gap. The two ends of the side of the inner rod 111 near the position of the inner cylinder 113 are provided with side ports 1111 that are connected to the inner end of the inner cylinder 113, and both sides of the inner end of the slide groove 233 are provided with side ports 1111 that are connected to the inner end of the inner cylinder 113. The side opening 1111 maintains a connected inner arc groove 234, and the end of the inner arc groove 234 is connected to a plurality of guide grooves 235. The ends of the guide grooves 235 are respectively connected to the inner ends of the intervals. The top rod 231 is provided to form intervals for isolating the foam at various positions at the top of the foam plate 230, and channels for the foam to flow are formed through the intervals. Each interval is connected to the port position of the guide groove 235 at the corresponding position, so that the cleaning liquid discharged from the guide groove 235 can directly contact the foam, and drive the foam to flow along the interval to the inner end of the collection component, so as to discharge the cleaning liquid in a direction and improve the foam collection efficiency.

[0047] Since the screw rod 220 drives the stirring rod 221 to stir the mixed solution, part of the solution will be splashed, resulting in the mixed solution residue adhering to the inner wall of the shell 110 near the bottom end. If it is not cleaned for a long time, the solution residue will dry into a solid, making it difficult to remove it later. At the same time, it will also affect the movement of the froth plate 230. Furthermore, a bottom ring 236 is provided at the bottom end of the froth plate 230. The cross-section of the bottom ring 236 is a right-angled triangle structure, and one of the right-angled sides of the bottom ring 236 is kept in contact with the bottom end of the froth plate 230, and the other right-angled side of the bottom ring 236 is kept in contact with the inner wall of the shell 110. During the reaction of the mixed solution at the inner end of the shell 110, an annular scraping surface is formed at the bottom end of the froth plate 230 by the provided bottom ring 236. When the froth plate 230 completes the froth removal work and moves downward, the bottom ring 236 slides on the inner wall of the shell 110 to scrape off the mixed solution residue adhering to the inner wall of the shell 110, so as to avoid the adhesion of the mixed solution residue affecting the later cleaning work.

[0048] In addition, the collecting assembly includes an outer frame 150, which is fixed on the outer side of the shell 110 near the top, and a pair of foam discharge grooves 112 are provided at one end of the outer side of the shell 110, and foam collecting panels 151 are provided on both sides of the top of the outer frame 150, and the foam collecting panels 151 are provided with leakage grooves 1511 connected to the foam discharge grooves 112 near the top, and a notch connected to the foam discharge grooves 112 is provided on one side of the top of the foam plate 230. When the foam plate 230 moves to the highest point, The inner tube 113 is connected to the inner end of the outer tube 116, and the cleaning liquid at the inner end of the liquid tank 140 is injected into the inner end of the inner tube 113 through the liquid pump 130. The cleaning liquid is introduced into the inner ends of the guide grooves 235 through the side opening 1111 through the inner tube 113, so that the cleaning liquid moves the foam adhered to the top of the foam plate 230 to a position close to the outer frame 150 along each interval, until the cleaning liquid carrying the foam is introduced into the inner end of the foam collecting plate 151 along the notch, thereby completing the work of collecting the foam.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-efficiency municipal wastewater treatment device, comprising a reactor (10) and a stirring device (20) installed at the inner end of the reactor (10), wherein the reactor (10) comprises a housing (110) for storing wastewater and reaction reagents, and the stirring device (20) comprises a stirring rod (221) for stirring the wastewater and the reaction reagents and a stirring assembly for providing power to the stirring rod (221), characterized in that: A foam scraping assembly is provided at the top of the stirring assembly. When the stirring rod (221) is driven by the stirring assembly to rotate in the forward direction, the foam scraping assembly moves from the highest point to the lowest point and is immersed in the mixed solution of wastewater and reaction reagents. When the stirring rod (221) rotates in the reverse direction, the foam scraping assembly moves from the lowest point to the highest point and in the process, foam generated on the surface of the mixed solution is brought upward out of the surface of the mixed solution. The housing (110) is provided with a foam driving component at one end of the highest moving point of the foam scraping component, and a collecting component at the other end, and both ends of the foam scraping component are respectively connected to the foam driving component and the collecting component, and when the foam scraping component carries the floating foam to the highest point, the foam driving component provides a cleaning liquid with kinetic energy to the surface of the foam scraping component, driving the floating foam on the surface to move to the inner end of the collecting component; The stirring assembly comprises a servo motor (210) and a screw rod (220) coaxially connected to the bottom end of the servo motor (210); a top cover (120) is provided at the top end of the housing (110); the servo motor (210) is fixed to the inside of the top cover (120); one end of the screw rod (220) is coaxially connected to the servo motor (210); the other end extends into the inner end of the housing (110) and is coaxially connected to the stirring rod (221); During the forward rotation of the stirring rod (221), the foam scraping assembly is driven to move from the highest point of the inner end of the housing (110) to the lowest point, and the entire foam scraping assembly is immersed in the mixed solution to form foam on its surface. During the reverse rotation of the stirring rod (221), the foam scraping assembly is driven to return from the lowest point to the highest point, and when the foam scraping assembly is separated from the mixed solution, the top end of the foam scraping assembly brings out the foam floating on the surface of the mixed solution and moves upward to the highest point with the floating foam. When the scraper assembly reaches the highest point, the foam driving assembly raises the cleaning liquid with kinetic energy to the top surface of the scraper assembly, so that the cleaning liquid contacts the floating foam on the top surface of the scraper assembly, and drives the floating foam to move toward the connection point between the collecting assembly and the scraper assembly, until it flows to the inner end of the collecting assembly; The froth scraping assembly comprises a froth plate (230), the froth plate (230) being sleeved on the outside of the screw rod (220) and being threadedly connected to the screw rod (220), the outside of the froth plate (230) being in contact with the inside of the housing (110), inner rods (111) being provided on both sides of the inner end of the housing (110), sliding grooves (233) being slidably connected to the inner rods (111) at corresponding positions being provided on both sides of the froth plate (230), and a plurality of froth guide grooves (232) for the free entry and exit of a mixed solution being provided on the top of the froth plate (230); The foam removal component comprises a liquid pump (130) and a liquid tank (140); one end of the liquid pump (130) is connected to the inner end of the housing (110); and the other end of the liquid pump (130) is connected to the inner end of the liquid tank (140).

2. The high-efficiency municipal wastewater treatment device according to claim 1, characterized in that: An inner tube (113) is provided on the outer side of the outer shell (110) near one end of the liquid pump (130); one end of the inner tube (113) is in communication with the inner end of the outer shell (110); a top plate (114) is provided on the other end of the inner tube (113); a terminal end of the liquid pump (130) is in communication with an outer tube (116); the outer tube (116) is rotatably connected to the outer side of the outer shell (110); a terminal end of the top plate (114) extends into the inner end of the outer tube (116); a partition (117) is provided on the inner end of the outer tube (116); a connection hole (117) is provided on the side of the partition (117) near the top end thereof and is in communication with the terminal end of the liquid pump (130). 171), a connecting tube (115) is connected between the inner side of the top plate (114) and the inner end of the inner tube (113), one end of the connecting tube (115) is in communication with the inner end of the inner tube (113), the other end of the connecting tube (115) protrudes from the side of the top plate (114) and is in communication with the inner end of the connecting hole (1171), a driving assembly is connected between the outer side of the outer tube (116) and the screw rod (220), when the screw rod (220) drives the froth plate (230) to move to the highest point, the driving assembly drives the outer tube (116) to rotate, so that the connecting hole (1171) moves to a position aligned with the end of the connecting tube (115).

3. The high-efficiency municipal wastewater treatment device according to claim 2, characterized in that: The drive assembly comprises a longitudinal toothed disc (118) and a transverse toothed ring (222); the longitudinal toothed disc (118) is arranged outside the outer tube (116) and is coaxially connected to the outer tube (116); the transverse toothed ring (222) is sleeved on the outside of the screw rod (220) near the top end, and the transverse toothed ring (222) is meshedly connected to the longitudinal toothed disc (118).

4. The high-efficiency municipal wastewater treatment device according to claim 3, characterized in that: A plurality of top rods (231) are arranged at the top of the foam plate (230), a space is reserved between two of the top rods (231), and the foam guide grooves (232) are sequentially distributed at the inner ends of the spacers. Side ports (1111) communicating with the inner end of the inner tube (113) are provided at both ends of the side surface of the inner rod (111) near the inner tube (113). Inner arc grooves (234) communicating with the side ports (1111) are provided on both sides of the inner end of the slide groove (233). The ends of the inner arc grooves (234) are connected to a plurality of guide grooves (235), and the ends of the guide grooves (235) are respectively communicated with the inner ends of the spacers.

5. The high-efficiency municipal wastewater treatment device according to claim 4, characterized in that: A bottom ring (236) is provided at the bottom end of the froth plate (230). The cross section of the bottom ring (236) is a right-angled triangle structure. One right-angled side of the bottom ring (236) is in close contact with the bottom end of the froth plate (230), and the other right-angled side of the bottom ring (236) is in close contact with the inner wall of the outer shell (110).

6. The high-efficiency municipal wastewater treatment device according to claim 5, characterized in that: The collecting assembly comprises an outer frame (150), the outer frame (150) being fixed on the outer side of the outer shell (110) near the top, and a pair of foam discharge grooves (112) being provided at one end of the outer side of the outer shell (110), foam collecting panels (151) being provided on both sides of the top of the outer frame (150), a leakage groove (1511) being provided near the top of the foam collecting panels (151) and being in communication with the foam discharge grooves (112), and a notch being provided on one side of the top of the foam plate (230) and being in communication with the foam discharge grooves (112).

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