Wastewater treatment system

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a wastewater treatment system, which comprises a sludge suction travelling crane and a sludge suction pipe arranged in a sedimentation tank, the sludge suction travelling crane is driven to horizontally move along the length direction of the sedimentation tank, the sludge suction pipe is mounted on the sludge suction travelling crane, one end of the sludge suction pipe extends into the sedimentation tank, and the other end of the sludge suction pipe extends into the sedimentation tank. A first scraping plate and a second scraping plate are mounted at one end, extending into the sedimentation tank, of the sludge suction pipe, and are respectively arranged on two opposite sides in the moving direction of the sludge suction pipe; the first scraping plate and the second scraping plate can respectively move in different directions corresponding to the sludge suction travelling crane, and in the moving process in different directions, the first scraping plate and the second scraping plate can scrape sludge at the bottom of the sedimentation tank, guide the scraped sludge into a sludge suction area and suck away the sludge through a sludge suction pipe, so that the sludge suction efficiency is improved, and the sludge suction efficiency is improved. The bidirectional sludge scraping in the sedimentation tank is realized, and the problem that the sludge is raised can also be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system. Background Art

[0002] Wastewater treatment is the purification of wastewater through physical, chemical and biological methods to reduce pollution and make full use of water resources. The main methods include physical treatment, chemical treatment and biological treatment. Physical treatment removes suspended matter and sediment in wastewater through mechanical filtration, sedimentation and other methods; chemical treatment uses chemical reactions to remove pollutants, such as neutralization and precipitation; biological treatment uses microorganisms to decompose organic matter and convert it into harmless substances.

[0003] Therefore, sedimentation is an indispensable part in the process of wastewater treatment, especially in wastewater treatment plants. Sedimentation tanks can be divided into horizontal sedimentation tanks and vertical sedimentation tanks according to the direction of water flow. The existing horizontal sedimentation tanks are equipped with sludge suction vehicles and sludge suction mechanisms. The sludge suction vehicles move horizontally along the length of the horizontal sedimentation tank, and drive the sludge suction mechanism to move synchronously to achieve the absorption of sludge at the bottom of the horizontal sedimentation tank.

[0004] For example, a patent with publication number CN119080184A and publication date December 6, 2024 discloses a sludge treatment system based on a traveling sludge suction vehicle, which relates to the technical field of water purification treatment equipment, and includes a sedimentation tank, which is used to accommodate water; suspended matter and particulate matter in the water body gather in the sedimentation tank and settle to the bottom of the tank; the sedimentation tank is in the shape of a rectangular parallelepiped, and the water body enters the sedimentation tank from one end in the length direction and flows out from the other end in the length direction; a sludge discharge channel is arranged on the outside of the sedimentation tank; the sludge discharge channel is lower than the bottom of the sedimentation tank; a rail is installed on the top of the two side walls of the sedimentation tank and is arranged along the flow direction of the water body; a sludge suction vehicle, which includes a traveling beam, two traveling driving devices, a sludge suction device and a siphon device ; The traveling beam is arranged horizontally above the sedimentation tank, and the traveling driving device is installed on the lower side of both ends of the traveling beam; the traveling driving device is installed on the guide rail and can move forward or backward along the guide rail; the mud suction device includes: a hanger assembly, which is installed at the lower part of the traveling beam and extends downward into the sedimentation tank; a plurality of mud suction branch pipes, which are installed on the hanger assembly; the lower end of the mud suction branch pipe is the suction end, and the suction end is provided with a mud suction nozzle, which is arranged in the sedimentation tank and close to the bottom of the tank, and the upper end of the mud suction branch pipe is the output end; the output end of the mud suction branch pipe extends outward into the mud discharge channel; a self-priming pump, which is installed on the traveling beam; the water suction pipe of the self-priming pump extends into the sedimentation tank, and the water outlet pipe of the self-priming pump extends into the mud discharge channel.

[0005] In the prior art, the scraper configured for the sludge suction mechanism is a V-shaped scraper, and the sludge suction nozzle is arranged in the middle of the V-shaped scraper. Due to the V-shaped setting of the scraper, although the sludge can be concentrated and introduced to the bottom of the sludge suction nozzle, the opening direction of the V-shaped scraper is fixed, resulting in the scraper being able to scrape the sludge only in one direction, and the sludge at the bottom of the sedimentation tank will be turned up during the rapid resetting movement, thereby affecting the subsequent sludge scraping work. Summary of the invention

[0006] The object of the present invention is to provide a wastewater treatment system to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wastewater treatment system, comprising a sludge suction vehicle and a sludge suction pipe for being arranged in a sedimentation tank, the sludge suction vehicle is driven to move horizontally along the length direction of the sedimentation tank, the sludge suction pipe is installed on the sludge suction vehicle, one end of the sludge suction pipe extends into the interior of the sedimentation tank, and a first scraper and a second scraper are installed at the end of the sludge suction pipe extending into the sedimentation tank, and the first scraper and the second scraper are respectively arranged on opposite sides of the moving direction of the sludge suction pipe.

[0008] Preferably, multiple groups of the first scraper and the second scraper are provided, and the multiple groups of first scraper and the multiple groups of second scraper are arranged along the width direction of the sedimentation tank, and adjacent first scraper are connected to each other, and adjacent second scraper are also connected to each other.

[0009] Preferably, the mud suction pipe includes a main pipe and a branch pipe, the main pipe is installed on the mud suction vehicle, and multiple groups of branch pipes are provided, one end of each group of branch pipes is connected to the main pipe and communicated with the inside of the main pipe, the other ends of each group of branch pipes are respectively connected to the first scraper and the second scraper, and extend into the V-shaped angle between the first scraper and the second scraper, and the area corresponding to the lower end opening of the branch pipe is the mud suction area.

[0010] Preferably, further, the lower end of the branch pipe is connected to both the first scraper and the second scraper.

[0011] Preferably, the first scraper and the second scraper are in an eight-shaped structure, the first scraper is provided with a first V-shaped groove, and the second scraper is provided with a second V-shaped groove.

[0012] Preferably, a conveying mechanism and a mud flushing nozzle are provided on the mud suction vehicle. The mud flushing nozzle is located between the first scraper and the second scraper. The conveying mechanism is used to convey water into the mud flushing nozzle and discharge it through the mud flushing nozzle. The mud flushing nozzle faces the bottom of the sedimentation tank.

[0013] Preferably, the first scraper includes a first plate body and a second plate body, a gap is provided between the first plate body and the second plate body, the first plate body and the second plate body are both fixedly connected to the branch pipe, the first plate body and the second plate body between two adjacent groups of first scrapers are connected to each other, the second scraper includes a third plate body and a fourth plate body, a gap is provided between the third plate body and the fourth plate body, the third plate body and the fourth plate body are both fixedly connected to the branch pipe, the third plate body and the fourth plate body between two adjacent groups of second scrapers are connected to each other, a sealing plate is fixedly connected between the first plate body and the third plate body and between the second plate body and the fourth plate body, and a water outlet is opened in the sealing plate.

[0014] Preferably, two adjacent groups of first scrapers and two adjacent groups of second scrapers are combined to form a chamber; a cover plate is provided on the top of the chamber, which is fixedly connected to the first scraper and the second scraper; the mud flushing nozzle is located in the chamber and faces the bottom of the sedimentation tank; and the chamber is connected to the mud suction area through the water outlet.

[0015] Preferably, the conveying mechanism includes a water pipe and a pump body, the water pipe is connected to the pump body, a mud flushing plate is installed on the inner wall of the chamber, the interior of the mud flushing plate is hollow, the top of the mud flushing plate is fixedly connected to the cover plate, the bottom opening of the mud flushing plate is a mud flushing nozzle, one end of the water pipe passes through the cover plate and is connected to the mud flushing plate, and the water pipe is communicated with the inside of the mud flushing pipe.

[0016] Preferably, a water outlet is provided on the sealing plate, the water outlet is inclined, and one end of the water outlet close to the branch pipe is lower than the height of the other end.

[0017] The beneficial effect of the present invention is that in the above technical scheme, the first scraper and the second scraper of the present invention can respectively correspond to the movement of the sludge suction vehicle in different directions, and during the movement in different directions, the first scraper and the second scraper can scrape the sludge at the bottom of the sedimentation tank, guide the scraped sludge into the sludge suction area, and suck the sludge away through the sludge suction pipe, that is, realize two-way sludge scraping in the sedimentation tank, and can also avoid the problem of lifting the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the front structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a top view of a first scraper and a second scraper provided in an embodiment of the present invention;

[0021] Figure 3A top cross-sectional view of a first scraper and a second scraper provided in an embodiment of the present invention;

[0022] Figure 4 A front cross-sectional view of a first scraper and a second scraper provided in an embodiment of the present invention;

[0023] Figure 5 A side cross-sectional view of a sealing plate provided in an embodiment of the present invention;

[0024] Figure 6 A front cross-sectional view of a sealing plate provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Sedimentation tank; 2. Mud suction vehicle; 3. Mud suction pipe; 31. Main pipe; 32. Branch pipe; 33. Mud suction area; 4. First scraper; 41. First plate body; 42. Second plate body; 5. Second scraper; 51. Third plate body; 52. Fourth plate body; 6. Chamber; 61. Sealing plate; 62. Water outlet; 63. Cover plate; 7. Conveying mechanism; 71. Water pipe; 72. Pump body; 8. Mud flushing plate; 81. Mud flushing nozzle; 82. Adjusting assembly; 821. Sliding block; 822. Rack; 823. First gear; 824. Second gear; 825. Receiving groove; 826. Pressure block; 827. Spring; 828. Slide; 9. Shield plate. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1-6As shown, an embodiment of the present invention provides a wastewater treatment system, including a sludge suction vehicle 2 and a sludge suction pipe 3 for being arranged in a sedimentation tank 1. The sludge suction vehicle 2 is driven to move horizontally along the length direction of the sedimentation tank 1. The sludge suction pipe 3 is installed on the sludge suction vehicle 2. One end of the sludge suction pipe 3 extends into the interior of the sedimentation tank 1. A first scraper 4 and a second scraper 5 are installed at the end of the sludge suction pipe 3 extending into the sedimentation tank 1. The first scraper 4 and the second scraper 5 are respectively arranged on opposite sides of the moving direction of the sludge suction pipe 3.

[0030] Specifically, the sedimentation tank 1 is a horizontal sedimentation tank 1, that is, the sedimentation tank 1 is a rectangular parallelepiped structure, and a driving mechanism is also installed on the mud suction vehicle 2, and the driving mechanism is used to drive the mud suction vehicle 2 to move horizontally along the length direction of the sedimentation tank 1. The driving mechanism is generally composed of a running wheel and a track. The running wheel is installed at the bottom of the mud suction vehicle 2, and the track is installed on the sedimentation tank 1. The running wheel is located on the track and forms a rolling guide with the track. The length direction of the track is consistent with the length direction of the sedimentation tank 1. The running wheel can be driven by a driving member such as a motor, and the rotation of the running wheel on the track drives the mud suction vehicle. 2 moves along the length direction of the sedimentation tank 1. This driving mechanism is a standard mechanism of the mud suction vehicle 2 and is a prior art, so it is not repeated here. The mud suction pipe 3 is fixedly connected to the mud suction vehicle 2. The first scraper 4 and the second scraper 5 are fixedly connected to the lower end of the mud suction pipe 3. The area below the lower end opening of the mud suction pipe 3 is the mud suction area 33. Therefore, when the mud suction vehicle 2 moves horizontally, it will drive the mud suction pipe 3, the first scraper 4 and the second scraper 5 to move synchronously. The first scraper 4 and the second scraper 5 are arranged on the mud suction pipe 3 in sequence along the length direction of the sedimentation tank 1. The first scraper 4 and the second scraper 5 are There are multiple groups, multiple groups of first scrapers 4 and multiple groups of second scrapers 5 are arranged along the width direction of the sedimentation tank 1, adjacent first scrapers 4 are connected to each other, and adjacent second scrapers 5 are also connected to each other. In this embodiment, the first scrapers 4 and the second scrapers 5 are both V-shaped structures, and the mud suction pipe 3 includes a main pipe 31 and a branch pipe 32. The main pipe 31 is installed on the mud suction vehicle 2, and the branch pipe 32 is provided with multiple groups. One end of the multiple groups of branch pipes 32 is connected to the main pipe 31 and communicated with the inside of the main pipe 31. The other ends of the multiple groups of branch pipes 32 are respectively connected to the corresponding first scrapers 4 and second scrapers 5 , and extends into the V-shaped angle between the first scraper 4 and the second scraper 5, that is, in this embodiment, each of the first scraper 4 and the second scraper 5 is installed with a branch pipe 32, that is, during the reciprocating movement of the sludge suction vehicle 2, the first scraper 4 and the second scraper 5 can respectively correspond to the movement of the sludge suction vehicle 2 in different directions, and during the movement in different directions, the first scraper 4 and the second scraper 5 can both scrape the sludge at the bottom of the sedimentation tank 1, and through the setting of their own V-shaped structure, the scraped sludge is guided to the inside of the sludge suction area 33, and the sludge is sucked away through the sludge suction pipe 3.

[0031] It should be noted that a suction mechanism is also installed on the sludge suction vehicle 2, and the suction mechanism can be a sludge pump, which is connected to the sludge suction pipe 3. The sludge pump is used to generate suction in the sludge suction pipe 3 and suck the sludge into the sludge suction pipe 3. In other embodiments, there is also a method of using siphon technology to generate suction in the sludge suction pipe 3. Both the sludge pump and the siphon technology are existing technologies and will not be elaborated on.

[0032] In another embodiment of the present invention, further, the lower end of the branch pipe 32 is connected to the first scraper 4 and the second scraper 5 at the same time.

[0033] Specifically, in this embodiment, the first scraper 4 and the second scraper 5 are in an eight-shaped structure, the first scraper 4 is formed with a first V-shaped groove, and the second scraper 5 is formed with a second V-shaped groove. Figure 2 and Figure 3As shown, since the lower end of the branch pipe 32 is connected to the V-shaped corner of the first scraper 4 and the second scraper 5 at the same time, the area corresponding to the lower end opening of the branch pipe 32 is the mud suction area 33 in the above embodiment, and the mud suction area 33 is connected to the first V-shaped groove and the second V-shaped groove at the same time, that is, the inside of the branch pipe 32 is connected to the first V-shaped groove and the second V-shaped groove at the same time (the bottom of the branch pipe 32 is higher than the bottom of the first scraper 4 and the second scraper 5). In actual use, the mud suction vehicle 2 is driven to move linearly along the length direction of the sedimentation tank 1, and drives the first scraper 4 and the second scraper 5 to move synchronously. For example, when the sludge suction vehicle 2 moves in one direction, the first scraper 4 contacts the sludge, and the first scraper 4 scrapes the sludge into the sludge suction area 33 during the movement. At this time, the lower end opening of the branch pipe 32 generates suction, and the sludge is sucked into the branch pipe 32, and sent into the main pipe 31, and then discharged through the main pipe 31. Since the first scraper 4 contacts the sludge before the second scraper 5, the area passed by the second scraper 5 is the area that has been cleaned by the first scraper 4. Therefore, it can be understood that in this one-way movement, the sludge in the first V-shaped groove is accumulated, and the sludge in the second V-shaped groove is accumulated. The V-shaped groove contains water at the bottom of the sedimentation tank 1. Since the sludge suction area 33 is connected to the first V-shaped groove and the second V-shaped groove, when the sludge enters the sludge suction area 33, the water in the second V-shaped groove is also sucked into the sludge suction area 33 under the action of the suction force of the branch pipe 32, that is, the sludge and water enter the sludge suction area 33 at the same time, and under the action of the flow of water, the sludge and water can be mixed to a certain extent in the sludge suction area 33, and the traction force generated by the flow of water will also assist the sludge to enter the branch pipe 32. Even if the first V-shaped groove is completely filled with sludge, there will be The water flows into the mud suction area 33, reducing the problem of the mud having difficulty entering the branch pipe 32 due to the poor fluidity of the mud. When the mud suction vehicle 2 is reset, similarly, the second scraper 5 contacts the mud before the first scraper 4. The accumulated sludge is located in the second V-shaped groove, and the water at the bottom of the sedimentation tank 1 is located in the first V-shaped groove. That is, during the reset movement, the sludge and water will also enter the mud suction area 33 at the same time. In other words, during the reciprocating movement of the mud suction vehicle 2, the sludge and water will also enter the mud suction area 33 at the same time, thereby improving the sludge suction efficiency.

[0034] In the above embodiment, since the first scraper 4 and the second scraper 5 are used to scrape the sludge on the bottom of the sedimentation tank 1, the bottom of the first scraper 4 and the second scraper 5 will contact the bottom of the sedimentation tank 1, and during the movement of the first scraper 4 and the second scraper 5, the first scraper 4 and the second scraper 5 will generate friction with the bottom of the sedimentation tank 1. As the running time increases, the wear of the bottom of the first scraper 4 and the second scraper 5 will become more and more serious, resulting in gaps between the first scraper 4 and the second scraper 5 and the bottom of the tank, and part of the sludge will leak out from the gap, resulting in the phenomenon of incomplete sludge washing becoming more and more serious. Therefore, in another embodiment of the present invention, further, a conveying mechanism 7 and a mud flushing nozzle 81 are provided on the mud suction vehicle 2. The mud flushing nozzle 81 is located between the first scraper 4 and the second scraper 5. The conveying mechanism 7 is used to convey water to the mud flushing nozzle 81 and discharge it through the mud flushing nozzle 81. The mud flushing nozzle 81 faces the bottom of the sedimentation tank 1.

[0035] Specifically, the first scraper 4 includes a first plate body 41 and a second plate body 42 (i.e., two wings of a V-shape), a spacing is provided between the first plate body 41 and the second plate body 42 (i.e., the V-shaped tip area is an open space), the first plate body 41 and the second plate body 42 are both fixedly connected to the branch pipe 32, the first plate body 41 and the second plate body 42 between two adjacent groups of first scrapers 4 are connected to each other, similarly, the second scraper 5 includes a third plate body 51 and a fourth plate body 52, a spacing is provided between the third plate body 51 and the fourth plate body 52, the third plate body 51 and the fourth plate body 52 are both fixedly connected to the branch pipe 32, the third plate body 51 and the fourth plate body 52 between two adjacent groups of second scrapers 5 are connected to each other, a sealing plate 61 is fixedly connected in the area between the first plate body 41 and the third plate body 51 and between the second plate body 42 and the fourth plate body 52, and a water outlet 62 is opened in the sealing plate 61;

[0036] That is to say, the two adjacent groups of first scrapers 4 and the two adjacent groups of second scrapers 5 are combined to form a chamber 6, that is, the second plate body 42 and the adjacent first plate body 41, the fourth plate body 52 and the adjacent third plate body 51, and the two groups of sealing plates 61 are combined to form the chamber 6, and the chamber 6 is approximately a diamond structure, and a cover plate 63 is provided on the top of the chamber 6, and the cover plate 63 is fixedly connected to the first scraper 4 and the second scraper 5, and the mud flushing nozzle 81 is located in the chamber 6 and faces the bottom of the sedimentation tank 1, and the chamber 6 is connected to the mud suction area 33 through the water outlet 62;

[0037] When the first scraper 4 or the second scraper 5 is scraping mud, the gap caused by wear will cause some of the residual sludge at the bottom of the pool to enter the chamber 6 as the first scraper 4 or the second scraper 5 moves. At this time, the conveying mechanism 7 conveys water to the mud flushing nozzle 81 and discharges it through the mud flushing nozzle 81. The discharged water impacts the pool bottom position corresponding to the chamber 6, that is, the sludge entering the chamber 6 is impacted, and the impact causes the sludge to separate from the bottom of the pool. The impacted sludge is mixed with water and discharged from the water outlet 62 on the sealing plate 61. The mixture of sludge and water enters the suction through the water outlet 62. The sludge at the bottom of the pool that has not been scraped away will enter the chamber 6, and will also be hit from the bottom of the pool by the mud flushing nozzle 81, and mixed with the water in the chamber 6, and then discharged into the mud suction area 33. In other words, although the bottom of the first scraper and the second scraper will be worn due to friction with the bottom of the pool, the gap caused by the wear will not affect the scraping of the first scraper and the second scraper.

[0038] It should be noted that, in the chamber 6, although a gap will be generated between the first scraper 4 and the second scraper 5 and the bottom of the tank after wear, that is, the bottom of the chamber 6 will also be connected to the outside through the gap, that is to say, a small part of the mixture of water and sludge in the chamber 6 will also be discharged from the gap into the sedimentation tank 1. Since the gap is small, this part can be ignored.

[0039] In an optional embodiment, the conveying mechanism 7 includes a water pipe 71 and a pump body 72, the water pipe 71 is connected to the pump body 72, a mud flushing plate 8 is installed on the inner wall of the chamber 6, the interior of the mud flushing plate 8 is hollow, the top of the mud flushing plate 8 is fixedly connected to the cover plate 63, the bottom opening of the mud flushing plate 8 is a mud flushing nozzle 81, one end of the water pipe 71 passes through the cover plate 63 and is connected to the mud flushing plate 8, and the water pipe 71 is communicated with the interior of the mud flushing plate 8.

[0040] Specifically, the pump body 72 and the water pipe 71 are both fixedly connected to the mud suction vehicle 2. One end of the water pipe 71 is connected to the mud flushing plate 8, and the other end is connected to an external water supply mechanism. It can also be directly extended into the sedimentation tank 1 to transport the water inside the sedimentation tank 1 to the mud flushing plate 8. The mud flushing plate 8 is arranged vertically, and the sides of the mud flushing plate 8 are connected to two groups of sealing plates 61. In actual use, the pump body 72 pumps water into the water pipe 71, and the water is transported to the mud flushing plate 8 through the water pipe 71, and discharged from the bottom opening of the mud flushing plate 8, that is, discharged from the mud flushing nozzle 81. Since the bottom opening of the mud flushing plate 8 is narrow, the discharged water flow has a certain speed, so it can knock up the sludge at the bottom of the pool in the chamber 6, and flow into the mud suction area 33 with the water flow, and be discharged from the mud suction pipe 3.

[0041] In another embodiment of the present invention, further, a water outlet 62 is opened on the sealing plate 61, and the water outlet 62 is opened at an angle, and one end of the water outlet 62 close to the branch pipe 32 is lower than the height of the other end.

[0042] Specifically, since the water outlet 62 connects the chamber 6 and the mud suction area 33, the opening of the water outlet 62 at one end close to the mud suction area 33 is lower than the opening at the other end, that is, the opening at one side close to the chamber 6. Since the chamber 6 is located at the bottom of the pool, the interior of the chamber 6 is initially filled with water. Since the diameter of the water outlet 62 is smaller than the diameter of the opening at the bottom of the mud flushing plate 8, in order to achieve a relative balance between the water inlet and outlet of the chamber 6, the flow rate of the water flowing out of the water outlet 62 is greater than the flow rate of the water discharged from the bottom opening of the mud flushing plate 8. That is, in actual use, the water discharged from the water outlet 62 The water and sludge mixture fluid has a certain flow rate. Due to the inclined arrangement of the water outlet 62, the fluid with a certain flow rate will impact downward on the sludge entering the sludge suction area 33 after being discharged, and the sludge will be knocked upward in the sludge suction area 33 and mixed with the water in the sludge suction area 33, so as to avoid the problem that the sludge is too dense and cannot enter the sludge suction pipe 3. By opening the water outlet 62 in an inclined manner, not only the disturbance of the water flow in the sludge suction area 33 is achieved, and the mixing effect of water and sludge is improved, but also the sludge can be knocked up from the bottom of the pool to avoid the problem of sludge adhering to the bottom of the pool.

[0043] Furthermore, a shield plate 9 is fixedly installed on the first scraper 4 and the second scraper 5, and the shield plate 9 covers the sludge suction area 33 inside. When the water in the sludge suction area 33 is ejected upward by the water outlet 62, the shield plate 9 can limit the water in the sludge suction area 33 from diffusing outward, that is, reduce the mixture of water and sludge discharged into the water body of the entire sedimentation tank 1.

[0044] In another embodiment of the present invention, the fender 8 can swing in the chamber 6 .

[0045] Specifically, the two ends of the mud flushing plate 8 are rotatably connected to the sealing plate 61, and an adjustment component 82 is provided in the sealing plate 61. The adjustment component 82 can passively adjust the swing direction of the mud flushing plate 8 according to the moving direction of the mud suction vehicle 2. More specifically, the adjustment mechanism includes a slider 821, a rack 822, a first gear 823 and a second gear 824. A slide groove 828 is provided inside the sealing plate 61. The slider 821 is installed inside the slide groove 828 and forms a sliding guide with the slide groove 828. The rack 822 is fixedly installed on the upper end of the slider 821. A coupling is installed at both ends of the mud flushing plate 8. The end of the coupling away from the mud flushing plate 8 extends into the inner wall of the sealing plate 61. The mud flushing plate 8 is rotated through the coupling. Connected to the sealing plate 61, the first gear 823 is fixedly installed on one end of the connecting shaft extending into the sealing plate 61, the second gear 824 is rotatably installed inside the sealing plate 61, the first gear 823 and the second gear 824 are both installed above the rack 822, the second gear 824 meshes with the rack 822 and the first gear 823, the slider 821 is provided with a receiving groove 825, the receiving groove 825 contains a pressing block 826 and a spring 827, the pressing block 826 and the receiving groove 825 form a sliding guide, one end of the spring 827 is fixedly connected to the pressing block 826, and the other end is fixedly connected to the inner wall of the slider 821, the edge of the slide groove 828 is horizontally opened, and the receiving groove 825 is vertically opened;

[0046] In actual use, the slider 821 is initially located in the middle of the slide groove 828. When the movement of the sludge suction vehicle 2 synchronously drives the sealing plate 61 to move at the bottom of the sedimentation tank 1, the movement at this time is set so that the first scraper 4 contacts the sludge. Since the pressure block 826 is sent out from the bottom opening of the slider 821 under the elastic action of the spring 827, the bottom of the pressure block 826 is attached to the bottom of the sedimentation tank 1. The pressure block 826 contacts the bottom of the sedimentation tank 1 and a certain friction force is generated between the two. Therefore, in the initial stage of the movement of the sealing plate 61, the pressure block 826 will remain stationary under the action of the friction force, that is, the slider 821 remains stationary, and the slider 821 and the sealing plate 61 during the movement process produce relative movement, and the slider 821 slides in the slide groove 828, that is, the slider 821 moves to the side away from the moving direction of the sludge suction vehicle 2, that is, to the side away from the first scraper 4. The movement of the slider 821 drives the rack 822 to move synchronously, and the rack 822 drives the second gear 824 to rotate through meshing, and the second gear 824 drives the first gear 823 to rotate, and the first gear 823 drives the mud flushing plate 8 to swing in the chamber 6 through the connecting shaft, that is, the lower end of the mud flushing plate 8 swings toward the moving direction close to the mud suction vehicle 2, that is, the lower end of the mud flushing plate 8 swings toward the side close to the first scraper 4. When the sludge enters the chamber 6 through the gap between the bottom of the first scraper 4 and the bottom of the sedimentation tank 1, the mud flushing plate 8 can discharge the water flow from the bottom in a corresponding inclined posture. The inclined direction can cause the discharge direction of the water flow to be opposite to the entry direction of the sludge. The opposite movement of the water flow and the sludge can better knock the sludge entering the chamber 6 from the bottom of the tank, further reducing the adhesion of the sludge to the bottom.

[0047] Similarly, when the mud suction vehicle 2 moves in the opposite direction, that is, when the second scraper 5 scrapes the sludge, the slider 821 slides again in the slide groove 828 under the action of the friction between the pressure block 826 and the bottom of the pool, and moves from one end close to the second scraper 5 to the other end. The slider 821 drives the mud flushing plate 8 to rotate in the chamber 6 through the rack 822, the second gear 824 and the first gear 823, that is, the lower end of the mud flushing plate 8 swings toward the side close to the second scraper 5, that is, when the mud suction vehicle 2 moves, the swinging direction of the lower end of the mud flushing plate 8 is consistent with the moving direction of the mud suction vehicle 2. It should be supplemented that the end of the water pipe 71 extending into the chamber 6 is a hose, which is adapted to the swinging of the mud flushing plate in the chamber.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wastewater treatment system, characterized in that: The invention comprises a sludge suction vehicle (2) and a sludge suction pipe (3) for being arranged in a sedimentation tank (1); the sludge suction vehicle (2) is driven to move horizontally along the length direction of the sedimentation tank (1); the sludge suction pipe (3) is installed on the sludge suction vehicle (2); one end of the sludge suction pipe (3) extends into the sedimentation tank (1); a first scraper (4) and a second scraper (5) are installed at the end of the sludge suction pipe (3) extending into the sedimentation tank (1); the first scraper (4) and the second scraper (5) are respectively arranged on opposite sides of the moving direction of the sludge suction pipe (3).

2. A wastewater treatment system according to claim 1, characterized in that: Multiple groups of first scrapers (4) and second scrapers (5) are provided. Multiple groups of first scrapers (4) and multiple groups of second scrapers (5) are arranged along the width direction of the sedimentation tank (1). Adjacent first scrapers (4) are connected to each other, and adjacent second scrapers (5) are also connected to each other.

3. A wastewater treatment system according to claim 1, characterized in that: The mud suction pipe (3) comprises a main pipe (31) and a branch pipe (32). The main pipe (31) is installed on the mud suction vehicle (2). The branch pipe (32) is provided with a plurality of groups. One end of each of the plurality of groups of branch pipes (32) is connected to the main pipe (31) and communicates with the interior of the main pipe (31). The other ends of the plurality of groups of branch pipes (32) are respectively connected to the first scraper (4) and the second scraper (5) and extend into the V-shaped angle between the first scraper (4) and the second scraper (5). The area below the lower end opening of the branch pipe (32) corresponds to the mud suction area (33).

4. A wastewater treatment system according to claim 3, characterized in that: The lower end of the branch pipe (32) is connected to both the first scraper (4) and the second scraper (5).

5. A wastewater treatment system according to claim 1, characterized in that: The first scraper (4) and the second scraper (5) are in an eight-shaped structure; the first scraper (4) is provided with a first V-shaped groove, and the second scraper (5) is provided with a second V-shaped groove.

6. A wastewater treatment system according to claim 1, characterized in that: A conveying mechanism (7) and a mud flushing nozzle (81) are provided on the mud suction vehicle (2). The mud flushing nozzle (81) is located between a first scraper (4) and a second scraper (5). The conveying mechanism (7) is used to convey water into the mud flushing nozzle (81) and discharge the water through the mud flushing nozzle (81). The mud flushing nozzle (81) faces the bottom of the sedimentation tank (1).

7. A wastewater treatment system according to claim 3, characterized in that: The first scraper (4) comprises a first plate body (41) and a second plate body (42), a spacing is provided between the first plate body (41) and the second plate body (42), the first plate body (41) and the second plate body (42) are both fixedly connected to the branch pipe (32), the first plate body (41) and the second plate body (42) between two adjacent groups of first scrapers (4) are connected to each other, and similarly, the second scraper (5) comprises a third plate body (51) and a fourth plate body (52), the third plate body (51 ) and the fourth plate body (52), the third plate body (51) and the fourth plate body (52) are both fixedly connected to the branch pipe (32), the third plate body (51) and the fourth plate body (52) between two adjacent groups of second scrapers (5) are connected to each other, a sealing plate (61) is fixedly connected between the first plate body (41) and the third plate body (51), and between the second plate body (42) and the fourth plate body (52), and a water outlet (62) is provided in the sealing plate (61).

8. A wastewater treatment system according to claim 6, characterized in that: Two adjacent groups of first scrapers (4) and two adjacent groups of second scrapers (5) are combined to form a chamber (6); a cover plate (63) is provided on the top of the chamber (6); the cover plate (63) is fixedly connected to the first scraper (4) and the second scraper (5); a mud flushing nozzle (81) is located in the chamber (6) and faces the bottom of the sedimentation tank (1); and the chamber (6) is connected to the mud suction area (33) through a water outlet (62).

9. A wastewater treatment system according to claim 8, characterized in that: The conveying mechanism (7) comprises a water delivery pipe (71) and a pump body (72), the water delivery pipe (71) being connected to the pump body (72), a mud flushing plate (8) being installed on the inner wall of the chamber (6), the interior of the mud flushing plate (8) being hollow, the top of the mud flushing plate (8) being fixedly connected to the cover plate (63), the bottom opening of the mud flushing plate (8) being a mud flushing nozzle (81), one end of the water delivery pipe (71) passing through the cover plate (63) and being connected to the mud flushing plate (8), and the water delivery pipe (71) being communicated with the interior of the mud flushing pipe.

10. A wastewater treatment system according to claim 7, characterized in that: A water outlet (62) is provided on the sealing plate (61), and the water outlet (62) is provided at an angle, and one end of the water outlet (62) close to the branch pipe (32) is lower than the height of the other end.

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