Sewage treatment equipment suitable for urban sewage treatment

Abstract

The invention discloses sewage treatment equipment suitable for urban sewage treatment, and relates to the technical field of sewage treatment.The sewage treatment equipment comprises a barrel, a discharging hopper is fixedly connected to the top of the barrel, the discharging end of the discharging hopper is located in the barrel, a T-shaped block is fixedly connected to the interior of the barrel, and an arc-shaped annular plate is fixedly connected to the middle of the top of the T-shaped block; a through hole is formed in the outer side of the arc-shaped annular plate, an extension hole is formed in the T-shaped block, a hollow ball is slidably connected into the extension hole, a round rod is fixedly connected to the top of the hollow ball, and a floating ball is fixedly connected to the end, away from the hollow ball, of the round rod. According to the sewage treatment equipment suitable for urban sewage treatment, separation can be better achieved through the surface tension difference of oil and water through the arc-shaped narrow opening, when an oil-water mixture passes through the arc-shaped narrow opening, due to the effect of surface tension, water tends to flow on the inner side of the narrow opening, oil flows on the outer side, and therefore the oil-water mixture is separated from the oil-water mixture. The oil-water separation efficiency is favorably improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to sewage treatment equipment suitable for urban sewage treatment. Background Art

[0002] Sewage treatment refers to the purification process of treating sewage to meet the requirements of a certain water body or reuse. Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage within the urban area. Urban sewage contains a large amount of organic matter, bacteria and viruses. With the growth of my country's urban population, the expansion of residential areas and the further concentration of population, the amount of domestic water consumption has also increased, making the amount of sewage discharged from cities more and more. Urban domestic sewage is mainly composed of kitchen washing, toilet flushing, bathing, laundry water, etc., and the sewage contains organic nitrogen and ammonia nitrogen.

[0003] There is oily sewage in the existing urban sewage. When treating oily sewage, activated carbon or oil separators are generally used to separate oil from water. Since activated carbon is a consumable item and needs to be replaced regularly, and the amount of activated carbon used in sewage treatment is large, the daily maintenance cost is high; and the use of oil separators to separate oil from water is just a simple physical separation of sewage, and the oil-water separation effect is poor, which affects the effect of sewage treatment. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A sewage treatment device suitable for urban sewage treatment, comprising a frame, a shell is fixedly connected to the inner side of the frame, a motor is fixedly connected to the bottom of the shell, the output end of the motor passes through the shell, a feed pipe is fixedly connected to the outer side of the top of the shell, a feed opening is opened at the bottom edge of the shell, and the feed opening and the feed pipe are alternately arranged; A filter assembly is fixedly installed at the top middle of the shell; A limit assembly, the limit assembly is fixedly installed in the inner cavity of the shell; A conveying assembly, which is fixedly installed in the middle of the inner cavity of the shell; Among them, the conveying component includes a fixed cylinder, which is fixedly connected to the middle of the shell and penetrates the shell. A rotating shaft is arranged at the axis of the fixed cylinder. By arranging a spiral plate, continuous upward movement can help form a stable oil-water stratification in the fixed cylinder. When the sewage rises slowly under the drive of the spiral plate, the oil and water have enough time to separate and occupy different areas respectively, which will make the sewage form a specific flow state during the rising process, increase the collision and agglomeration opportunities between oil droplets and water, further promote oil-water separation, and facilitate centralized collection. The rotating shaft is fixedly connected to the output end of the motor, and the outer side of the rotating shaft is fixedly connected with a spiral plate; Preferably, the filter assembly includes a cylinder, which is fixedly mounted on the top of the shell, the fixed cylinder penetrates the cylinder, the top of the cylinder is fixedly connected with a connecting pipe, one end of the connecting pipe away from the cylinder is fixedly connected to the outside of the fixed cylinder, the inside of the cylinder is fixedly connected with a separation assembly, there are multiple separation assemblies, and the multiple separation assemblies are evenly distributed with the fixed cylinder as the center, and a connecting hole is opened at the bottom of the cylinder near the fixed cylinder; Preferably, the separation component includes a cylinder, the top of which is fixedly connected to a lower hopper, and the arc-shaped narrow mouth can better utilize the difference in surface tension between oil and water to achieve separation. The surface tension of water is relatively large, while the surface tension of oil is small. When the oil-water mixture passes through the arc-shaped narrow mouth, due to the effect of surface tension, water tends to flow on the inside of the narrow mouth, while the oil flows on the outside. At the same time, when the oil-water mixture passes through the narrow mouth, the flow rate will increase, while the flow rate in the area behind the narrow mouth will decrease. This change in flow rate will make it easier for oil droplets to float up under the action of gravity, while water will sink, which helps to improve the efficiency of oil-water separation. The lower end of the lower hopper is located inside the cylinder, and a T-shaped block is fixedly connected inside the cylinder, and an arc-shaped ring plate is fixedly connected to the middle of the top of the T-shaped block , a through hole is provided on the outer side of the arc-shaped ring plate, and the sewage enters the interior of the shell through the feed pipe. The motor is connected to an external power supply to work, and the motor drives the rotating shaft to rotate, thereby driving the spiral plate to rotate, so that the sewage at the bottom of the shell moves upward with the spiral plate, and then the sewage enters the interior of the separation component through the connecting pipe. The oil in the middle of the sewage is separated into oil and water layers as it slowly rises with the spiral plate. The separated oil and water enter the interior of the cylinder, so that the float is located at the oil-water layer. Under the action of buoyancy, as the sewage increases inside the lower hopper, the float moves away from the arc-shaped ring plate, and the arc-shaped ring plate is reset under the action of elastic force. At this time, the water at the bottom can enter the interior of the extension hole through the through hole on the top of the arc-shaped ring plate, so that the water enters the interior of the shell through the connecting hole, and then is discharged from the lower feed port at the bottom. As the water is discharged, the float moves downward with the water level and contacts the arc-shaped ring plate. When the float is not affected by buoyancy, the arc-shaped ring plate closes, and the oil in the lower hopper flows into the interior of the cylinder from the gap between the lower hopper and the arc-shaped ring plate. There are multiple through holes, and the multiple through holes are evenly distributed on the arc-shaped ring plate. The arc-shaped ring plate is elastic. In the initial state, under the gravity of the float and the hollow ball, the float contacts the top of the arc-shaped ring plate. Under the elastic performance of the arc-shaped ring plate, the through holes on the arc-shaped ring plate are closed at this time. An extended hole is opened inside the T-shaped block, and a hollow ball is slidably connected inside the extended hole. Through the hollow ball set in the extended hole, water carrying part of the oil enters the interior of the extended hole, and the oil remains above the hollow ball. As the separation and filtration are slowly carried out, the hollow ball The oil accumulation on the top slows down the speed of sewage passing through the extension hole, and the water level inside the lower hopper rises, so that the hollow ball inside the extension hole is under the action of buoyancy. When the top of the hollow ball is flush with the T-shaped block, by setting the float and the hollow ball, the liquid level will fluctuate due to external factors such as changes in sewage flow and temperature fluctuations. The upper and lower floats cooperate with the hollow ball to reduce the impact of fluctuations on the separation effect. At the same time, as it floats up and down, the connecting rod moves up and down in the liquid in the middle part to improve the oil-water separation effect. The top of the hollow ball is fixedly connected with a round rod, and the end of the round rod away from the hollow ball is fixedly connected with a float. The float is located on the top of the arc ring plate, the outside of the round rod is fixedly connected with a connecting rod, and the bottom of the T-shaped block is fixedly connected with a limit ring.

[0005] Preferably, a fixing plate is fixedly connected to the outer side of the rotating shaft near the outer side of the filter assembly, and an air outlet is provided on the outer side of the top of the fixing cylinder of the fixing plate, and the air outlet is located above the fixing plate, and a floating plate is slidably connected to the outer side of the rotating shaft near the fixing plate, and the motor is connected to an external power supply to work, and the motor drives the rotating shaft to rotate, thereby the rotating shaft drives the spiral plate to rotate, so that the sewage at the bottom of the shell moves upward with the spiral plate, and under the buoyancy of the sewage, the floating plate moves upward. At this time, the circular hole is flush with the annular groove on the cylinder, and since there is some gas in the sewage, the gas is discharged from the air outlet through the circular hole. By arranging multiple cylinders and fixing plates, a limiting guiding role is played for the floating plate, and while exhausting, the sewage is prevented from being discharged from the air outlet. The outer side of the floating plate is slidably connected to the inner wall of the fixing cylinder, and a circular hole is provided at the top edge of the floating plate, and a cylinder is fixedly connected to the inner wall of the fixing cylinder, the cylinder is located inside the circular hole, and the cylinder is slidably connected to the floating plate through the circular hole, and an annular groove is provided on the outer side of the cylinder near the circular hole, and a fixing rod is fixedly connected to the outer edge of the spiral plate.

[0006] Preferably, the limiting assembly includes a trapezoidal plate, which is fixedly connected to the shell, the opening of the trapezoidal plate is fixedly connected to the inner wall of the shell, and one end of the trapezoidal plate away from the shell is fixedly connected to the outer side of the fixed cylinder. There are multiple trapezoidal plates, and the multiple trapezoidal plates are evenly distributed with the fixed cylinder as the center. The outer side of the side of the trapezoidal plate is fixedly connected with an intermediate plate. The sewage enters the interior of the shell through the feed pipe, and the sewage contacts the filter plate. The sewage moves downward along the filter plates that are inclined and alternately arranged. By setting up multiple filter plates, filter plates with different inclination angles can intercept particles of different sizes to achieve graded filtration. The sewage passes through these levels in turn, and larger particles of impurities are initially trapped by coarser holes. The filter plates with smaller pores intercept the impurities, while the impurities with smaller particles are removed in the subsequent filter plates with finer pores. This multi-level filtration method can more comprehensively remove various impurities in the sewage, from large suspended solids to tiny particulate matter, which can be effectively filtered. The inclined and alternating filter plates will cause turbulence and mixing of the fluid in the filtration area, which helps to break the laminar flow state in the fluid, better disperse the particles in the fluid, increase the contact opportunities between the particles and the filter plates, and also prevent the accumulation of particles in local areas, improving the uniformity of filtration. Subsequently, the sewage passing through the filter plates moves to the middle of the shell through the gap between the middle plate and the shell, and the two ends of the middle plate are connected to the corresponding Two adjacent trapezoidal plates are fixedly connected, and a block is fixedly connected to the outer side of the shell near the middle plate. By setting the block, the silt in the sewage can be effectively intercepted to prevent a large amount of silt from entering the subsequent treatment. The block and the trapezoidal plate are alternately arranged, and the trapezoidal plate is fixedly connected to the outer side of the side near the fixed cylinder. The filter plate is alternately arranged by tilting, which effectively extends the path of the sewage flow. At the same time, when the sewage passes through these filter plates, it is necessary to constantly change the flow direction, which increases the contact time and area with the filter medium. There are multiple filter plates, and the multiple filter plates are alternately arranged up and down at the interval between two adjacent trapezoidal plates. A slot is provided at the opening of the trapezoidal plate, and the slot is located at two opposite In the middle of the adjacent filter plate, a fixing ring is fixedly installed inside the slot, and a fan-shaped plate is fixedly connected to the inner wall of the fixing ring. The inner cavity of the trapezoidal plate and the connecting hole are located on the same vertical plane. The sewage after oil-water separation enters the interior of the trapezoidal plate through the connecting hole, falls onto the fan-shaped plate, moves along the guide block, flows downward from the fan-shaped groove, and is finally discharged from the discharge port. After filtration, there may still be some fine particulate matter in the water. By setting up multiple fan-shaped plates and guide blocks, the guide blocks can guide the water flow to form a specific flow state, so that these fine particles are gradually settled under the action of gravity. The top of the fan-shaped plate is fixedly connected with the guide block, and a fan-shaped groove is opened at one end of the fan-shaped plate close to the fixing ring.

[0007] The present invention provides a sewage treatment device suitable for urban sewage treatment. It has the following beneficial effects: 1. This sewage treatment equipment, which is suitable for urban sewage treatment, achieves separation by utilizing the difference in surface tension between oil and water. The surface tension of water is relatively large, while the surface tension of oil is small. When the oil-water mixture passes through the arc-shaped narrow mouth, due to the effect of surface tension, water tends to flow on the inside of the narrow mouth, while oil flows on the outside, which helps to improve the efficiency of oil-water separation.

[0008] 2. This sewage treatment equipment, which is suitable for urban sewage treatment, uses a float and a hollow ball. Due to the influence of external factors such as changes in sewage flow and temperature fluctuations, the liquid level will fluctuate. The upper and lower floats and the hollow balls cooperate with each other to reduce the influence of fluctuations on the separation effect. At the same time, as it floats up and down, the connecting rod moves up and down in the liquid in the middle part to improve the oil-water separation effect.

[0009] 3. The sewage treatment equipment suitable for urban sewage treatment has a circular hole flush with the annular groove on the cylinder. Since there is some gas in the sewage, the gas is discharged from the air outlet through the circular hole. By setting up multiple cylinders and fixed plates, the floating plate plays a limiting and guiding role, which prevents sewage from being discharged from the air outlet while exhausting the gas.

[0010] 4. This sewage treatment equipment, which is suitable for urban sewage treatment, can cause turbulence and mixing of the fluid in the filtration area by tilting the filter plates relatively alternately, which helps to break the laminar flow state in the fluid, so that the particles are better dispersed in the fluid, and increase the contact opportunities between the particles and the filter plates. At the same time, it can also prevent the accumulation of particles in local areas and improve the uniformity of filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the external structure of a sewage treatment device suitable for urban sewage treatment according to the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the conveying assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the separation component of the present invention; Figure 6 It is a schematic diagram of the structure of the enlarged view of point A in the figure of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the limit assembly of the present invention; Figure 8 It is a schematic diagram of the local structure of the limit assembly of the present invention; Fig. 9 It is a schematic diagram of the local structure of the limiting component of the present invention.

[0012] In the figure: 1, frame; 2, shell; 3, feed pipe; 4, filter assembly; 41, cylinder; 42, connecting pipe; 43, separation assembly; 431, cylinder; 432, lower hopper; 433, arc ring plate; 434, float; 435, round rod; 436, hollow ball; 437, T-shaped block; 438, extension hole; 439, limit ring; 4310, through hole; 4311, connecting rod; 44, connecting hole; 5, motor; 6. Feeding port; 7. Limiting assembly; 71. Trapezoidal plate; 72. Intermediate plate; 73. Filter plate; 74. Slot; 75. Fan-shaped plate; 76. Guide block; 77. Fixed ring; 78. Fan-shaped groove; 79. Stopper; 8. Conveying assembly; 81. Fixed cylinder; 82. Rotating shaft; 83. Spiral plate; 84. Fixed rod; 85. Air outlet; 86. Cylinder; 87. Ring groove; 88. Floating plate; 89. Round hole; 810. Fixed plate. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0014] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a sewage treatment device suitable for urban sewage treatment, comprising a frame 1, a shell 2 is fixedly connected to the inner side of the frame 1, a motor 5 is fixedly connected to the bottom of the shell 2, an output end of the motor 5 passes through the shell 2, a feed pipe 3 is fixedly connected to the outer side of the top of the shell 2, a feed port 6 is opened at the bottom edge of the shell 2, and the feed port 6 and the feed pipe 3 are alternately arranged; The filter assembly 4 is fixedly installed at the top middle of the housing 2; A limit assembly 7, the limit assembly 7 is fixedly installed in the inner cavity of the housing 2; The conveying assembly 8 is fixedly installed in the middle of the inner cavity of the shell 2; The conveying assembly 8 includes a fixed cylinder 81, which is fixedly connected to the middle of the shell 2 and penetrates the shell 2. A rotating shaft 82 is provided at the axis of the fixed cylinder 81. By providing a spiral plate 83, continuous upward movement can help form a stable oil-water stratification in the fixed cylinder 81. When the sewage rises slowly under the drive of the spiral plate 83, the oil and water have enough time to separate and occupy different areas respectively, which will cause the sewage to form a specific flow state during the rising process, increase the collision and coalescence opportunities between oil droplets and water, further promote oil-water separation, and facilitate centralized collection. The rotating shaft 82 is fixedly connected to the output end of the motor 5, and the outer side of the rotating shaft 82 is fixedly connected with a spiral plate 83; The filter assembly 4 includes a cylinder 41, which is fixedly mounted on the top of the housing 2, and a fixed cylinder 81 passes through the cylinder 41. A connecting pipe 42 is fixedly connected to the top of the cylinder 41, and one end of the connecting pipe 42 away from the cylinder 41 is fixedly connected to the outside of the fixed cylinder 81. A separation assembly 43 is fixedly connected to the inside of the cylinder 41. There are multiple separation assemblies 43, and the multiple separation assemblies 43 are evenly distributed around the fixed cylinder 81. A connecting hole 44 is opened near the bottom of the cylinder 41 near the fixed cylinder 81. The separation component 43 includes a cylinder 431, and a lower hopper 432 is fixedly connected to the top of the cylinder 431. The arc-shaped narrow mouth can better utilize the difference in surface tension between oil and water to achieve separation. The surface tension of water is relatively large, while the surface tension of oil is small. When the oil-water mixture passes through the arc-shaped narrow mouth, due to the effect of surface tension, water tends to flow on the inside of the narrow mouth, while oil flows on the outside. At the same time, when the oil-water mixture passes through the narrow mouth, the flow rate will increase, while the flow rate in the area behind the narrow mouth will decrease. This change in flow rate will make it easier for oil droplets to float up under the action of gravity, while water will sink, which helps to improve the efficiency of oil-water separation. The lower end of the lower hopper 432 is located inside the cylinder 431, and a T-shaped block 437 is fixedly connected inside the cylinder 431. T An arc-shaped ring plate 433 is fixedly connected to the middle of the top of the block 437, and a through hole 4310 is provided on the outer side of the arc-shaped ring plate 433. The sewage enters the interior of the shell 2 through the feed pipe 3. The motor 5 is connected to an external power supply to work, and the motor 5 drives the rotating shaft 82 to rotate, so that the rotating shaft 82 drives the spiral plate 83 to rotate, so that the sewage at the bottom of the shell 2 moves upward with the spiral plate 83, and then the sewage enters the interior of the separation component 43 through the connecting pipe 42. In the process of the oil in the middle of the sewage slowly rising with the spiral plate 83, the oil and water are separated, and the separated oil and water enter the interior of the cylinder 431, so that the float 434 is located at the oil-water separation. Under the action of buoyancy, as the sewage increases in the lower hopper 432, the float 434 moves away from the arc-shaped ring plate 433, and the arc-shaped ring plate 433 The water is then reset under the action of elastic force. At this time, the water at the bottom can enter the interior of the extended hole 438 through the through hole 4310 at the top of the arc-shaped ring plate 433, so that the water enters the interior of the shell 2 through the connecting hole 44, and then is discharged from the bottom discharge port 6. As the water is discharged, the float 434 moves downward with the water level and contacts the arc-shaped ring plate 433. When the float 434 is not affected by the buoyancy, the arc-shaped ring plate 433 closes, and the oil inside the lower hopper 432 flows into the interior of the cylinder 431 from the gap between the lower hopper 432 and the arc-shaped ring plate 433. There are multiple through holes 4310, and the multiple through holes 4310 are evenly distributed on the arc-shaped ring plate 433. The arc-shaped ring plate 433 is elastic. In the initial state, under the gravity of the float 434 and the hollow ball 436, The float 434 contacts the top of the arc-shaped ring plate 433. Under the elastic performance of the arc-shaped ring plate 433, the through hole 4310 on the arc-shaped ring plate 433 is closed at this time, and an extension hole 438 is opened inside the T-shaped block 437. The inside of the extension hole 438 is slidably connected with a hollow ball 436. Through the hollow ball 436 set in the extension hole 438, water carrying part of the oil enters the extension hole 438, and the oil remains above the hollow ball 436. With the gradual separation and filtration, the oil accumulates above the hollow ball 436, which slows down the speed of sewage passing through the extension hole 438. The water level inside the lower hopper 432 rises, so that the hollow ball 436 inside the extension hole 438 is under the action of buoyancy. When the top of the hollow ball 436 is flush with the T-shaped block 437,By setting the float 434 and the hollow ball 436, the liquid level will fluctuate due to external factors such as changes in sewage flow and temperature fluctuations. The upper and lower floats 434 and the hollow ball 436 cooperate with each other to reduce the impact of fluctuations on the separation effect. At the same time, as the upper and lower floats float, the connecting rod 4311 moves up and down in the liquid in the middle part to improve the oil-water separation effect. The top of the hollow ball 436 is fixedly connected to the round rod 435, and the end of the round rod 435 away from the hollow ball 436 is fixedly connected to the float 434. The float 434 is located at the top of the arc-shaped ring plate 433, and the outer side of the round rod 435 is fixedly connected to the connecting rod 4311. The bottom of the T-shaped block 437 is fixedly connected to the limit ring 439.

[0015] The second embodiment is based on the first embodiment. Figures 4 to 6 As shown, the rotating shaft 82 is fixedly connected to the outer side of the filter assembly 4 with a fixing plate 810, and the outer side of the top of the fixing cylinder 81 of the fixing plate 810 is provided with an air outlet 85, and the air outlet 85 is located above the fixing plate 810. The rotating shaft 82 is slidably connected to the outer side of the fixing plate 810 with a floating plate 88, and the motor 5 is connected to an external power supply to work, and the motor 5 drives the rotating shaft 82 to rotate, so that the rotating shaft 82 drives the spiral plate 83 to rotate, so that the sewage at the bottom of the shell 2 moves upward with the spiral plate 83. Under the buoyancy of the sewage, the floating plate 88 moves upward, and at this time, the circular hole 89 is flush with the annular groove 87 on the cylinder 86. Due to the presence of some gas in the sewage, The gas is discharged from the air outlet 85 through the circular hole 89. By setting up multiple cylinders 86 and fixed plates 810, the floating plate 88 is limited and guided. While exhausting the gas, sewage is prevented from being discharged from the air outlet 85. The outer side of the floating plate 88 is slidably connected to the inner wall of the fixed cylinder 81. A circular hole 89 is opened at the top edge of the floating plate 88. The inner wall of the fixed cylinder 81 is fixedly connected with a cylinder 86. The cylinder 86 is located inside the circular hole 89, and the cylinder 86 is slidably connected to the floating plate 88 through the circular hole 89. An annular groove 87 is opened on the outer side of the cylinder 86 near the circular hole 89. A fixing rod 84 is fixedly connected to the outer edge of the spiral plate 83.

[0016] The third embodiment is based on the first and second embodiments. Figures 7 to 9As shown, the limiting assembly 7 includes a trapezoidal plate 71, which is fixedly connected to the shell 2, and the opening of the trapezoidal plate 71 is fixedly connected to the inner wall of the shell 2, and one end of the trapezoidal plate 71 away from the shell 2 is fixedly connected to the outer side of the fixed cylinder 81. There are multiple trapezoidal plates 71, and the multiple trapezoidal plates 71 are evenly distributed around the fixed cylinder 81. The outer side of the side of the trapezoidal plate 71 is fixedly connected with an intermediate plate 72. The sewage enters the interior of the shell 2 through the feed pipe 3, and the sewage contacts the filter plate 73. The sewage moves downward along the filter plates 73 that are inclined and alternately arranged. By setting multiple filter plates 73, filter plates with different inclination angles can intercept particles of different sizes to achieve graded filtration. The sewage passes through these levels in turn, and larger particles of impurities are removed at the initial stage. The filter plates with coarse pores intercept, while the impurities with smaller particles are removed at the subsequent filter plates with finer pores. This multi-level filtration method can more comprehensively remove various impurities in the sewage, from large suspended solids to tiny particulate matter, which can be effectively filtered. The relatively alternating inclined filter plates will cause turbulence and mixing of the fluid in the filtration area, which helps to break the laminar flow state in the fluid, better disperse the particles in the fluid, increase the contact opportunities between the particles and the filter plates, and also prevent the accumulation of particles in local areas, thereby improving the uniformity of filtration. Subsequently, the sewage passing through the filter plate 73 moves toward the middle of the shell 2 through the gap between the middle plate 72 and the shell 2. The two ends of the middle plate 72 are fixedly connected to the two adjacent trapezoidal plates 71. The shell 2 is close to the middle. A stopper 79 is fixedly connected to the outer side of the intermediate plate 72. By setting the stopper 79, the silt in the sewage can be effectively intercepted to prevent a large amount of silt from entering the subsequent treatment. The stopper 79 is alternately arranged with the trapezoidal plate 71. The outer side of the side of the trapezoidal plate 71 close to the fixed cylinder 81 is fixedly connected with a filter plate 73. The filter plates 73 are alternately arranged obliquely, which effectively extends the path of the sewage flow. At the same time, when the sewage passes through these filter plates 73, it is necessary to continuously change the flow direction, which increases the contact time and area with the filter medium. There are multiple filter plates 73, and multiple filter plates 73 are alternately arranged up and down at the interval between two adjacent trapezoidal plates 71. A card slot 74 is provided at the opening of the trapezoidal plate 71. The card slot 74 is located in the middle of two adjacent filter plates 73. A fixing ring 77 is fixedly installed inside the groove 74, and a fan-shaped plate 75 is fixedly connected to the inner wall of the fixing ring 77. The inner cavity of the trapezoidal plate 71 and the connecting hole 44 are located on the same vertical plane. The sewage after oil-water separation enters the interior of the trapezoidal plate 71 through the connecting hole 44, falls on the fan-shaped plate 75, moves along the guide block 76, flows downward from the fan-shaped groove 78, and is finally discharged from the discharge port 6. After filtration, there may still be some fine particulate matter in the water. By setting up multiple fan-shaped plates 75 and guide blocks 76, the guide blocks 76 can guide the water flow to form a specific flow state, so that these fine particles gradually settle down under the action of gravity. The top of the fan plate 75 is fixedly connected with the guide block 76, and the fan plate 75 is provided with a fan-shaped groove 78 at one end close to the fixing ring 77.

[0017] When in use, sewage enters the interior of the shell 2 through the feed pipe 3, and the sewage contacts the filter plate 73. The sewage moves downward along the filter plates 73 that are inclined and arranged alternately. By setting a plurality of filter plates 73, filter plates with different inclination angles can intercept particles of different sizes to achieve graded filtration. The sewage passes through these levels in turn, and larger particles of impurities are intercepted by the filter plates with coarser pores in the early stage, while smaller particles of impurities are removed at the subsequent filter plates with finer pores. Subsequently, the sewage passing through the filter plate 73 moves toward the middle of the shell 2 through the gap between the intermediate plate 72 and the shell 2.

[0018] The motor 5 is connected to an external power source to work, and the motor 5 drives the rotating shaft 82 to rotate, so that the rotating shaft 82 drives the spiral plate 83 to rotate, so that the sewage at the bottom of the shell 2 moves upward with the spiral plate 83, and then the sewage enters the interior of the separation component 43 through the connecting pipe 42. The oil in the sewage is separated into oil and water layers in the process of slowly rising with the spiral plate 83. The separated oil and water enter the interior of the cylinder 431, so that the float 434 is located at the oil-water layer. Under the action of buoyancy, as the sewage increases inside the lower hopper 432, the float 434 moves away from the arc-shaped ring plate 433, and the arc-shaped ring plate 433 is reset under the action of elastic force. At this time, the water at the bottom can pass through the arc-shaped ring plate 433. The through hole 4310 at the top enters the interior of the extended hole 438, so that water enters the interior of the shell 2 through the connecting hole 44, and then is discharged from the bottom discharge port 6. As the water is discharged, the float 434 moves downward with the water level and contacts the arc-shaped ring plate 433. When the float 434 is not affected by buoyancy, the arc-shaped ring plate 433 closes, and the oil inside the lower hopper 432 flows into the interior of the cylinder 431 from the gap between the lower hopper 432 and the arc-shaped ring plate 433. The sewage after oil-water separation enters the interior of the trapezoidal plate 71 through the connecting hole 44, falls on the fan plate 75, moves along the guide block 76, flows downward from the fan groove 78, and is finally discharged from the discharge port 6.

[0019] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A sewage treatment equipment suitable for urban sewage treatment, characterized in that: include: A frame (1), wherein a shell (2) is fixedly connected to the inner side of the frame (1), a motor (5) is fixedly connected to the bottom of the shell (2), an output end of the motor (5) passes through the shell (2), a feed pipe (3) is fixedly connected to the outer side of the top of the shell (2), a feed opening (6) is provided at the bottom edge of the shell (2), and the feed opening (6) and the feed pipe (3) are alternately arranged; A filter assembly (4), wherein the filter assembly (4) is fixedly mounted at the middle of the top of the housing (2); A limit assembly (7), wherein the limit assembly (7) is fixedly mounted in the inner cavity of the housing (2); A conveying assembly (8), wherein the conveying assembly (8) is fixedly mounted in the middle of the inner cavity of the shell (2); The conveying assembly (8) comprises a fixed cylinder (81), the fixed cylinder (81) is fixedly connected to the middle of the shell (2), and the fixed cylinder (81) passes through the shell (2), a rotating shaft (82) is arranged at the axis of the fixed cylinder (81), the rotating shaft (82) is fixedly connected to the output end of the motor (5), and a spiral plate (83) is fixedly connected to the outer side of the rotating shaft (82); The filter assembly (4) comprises a cylinder (41), the cylinder (41) being fixedly mounted on the top of the housing (2), the fixed cylinder (81) penetrating the cylinder (41), the top of the cylinder (41) being fixedly connected to a connecting pipe (42), one end of the connecting pipe (42) away from the cylinder (41) being fixedly connected to the outside of the fixed cylinder (81), and the inside of the cylinder (41) being fixedly connected to a separation assembly (43); The separation assembly (43) comprises a cylinder (431), the top of the cylinder (431) is fixedly connected to a material discharge hopper (432), the material discharge end of the material discharge hopper (432) is located inside the cylinder (431), a T-shaped block (437) is fixedly connected inside the cylinder (431), an arc-shaped ring plate (433) is fixedly connected to the middle of the top of the T-shaped block (437), a through hole (4310) is provided on the outside of the top of the arc-shaped ring plate (433), an extension hole (438) is provided inside the T-shaped block (437), a hollow ball (436) is slidably connected inside the extension hole (438), a round rod (435) is fixedly connected to the top of the hollow ball (436), and a floating ball (434) is fixedly connected to the end of the round rod (435) away from the hollow ball (436).

2. A sewage treatment equipment suitable for urban sewage treatment according to claim 1, characterized in that: There are a plurality of separation components (43), and the plurality of separation components (43) are evenly distributed around the fixed cylinder (81), and a communicating hole (44) is provided at the bottom of the cylinder (41) close to the fixed cylinder (81).

3. A sewage treatment equipment suitable for urban sewage treatment according to claim 2, characterized in that: There are a plurality of through holes (4310), and the plurality of through holes (4310) are evenly distributed on the top of the arc-shaped ring plate (433). The arc-shaped ring plate (433) is elastic. The floating ball (434) is located on the top of the arc-shaped ring plate (433). The outer side of the round rod (435) is fixedly connected to a connecting rod (4311), and the bottom of the T-shaped block (437) is fixedly connected to a limiting ring (439).

4. A sewage treatment equipment suitable for urban sewage treatment according to claim 3, characterized in that: A fixing plate (810) is fixedly connected to the outer side of the rotating shaft (82) close to the filter assembly (4); an air outlet (85) is provided on the outer side of the top of the fixing cylinder (81) of the fixing plate (810); and the air outlet (85) is located above the fixing plate (810).

5. A sewage treatment equipment suitable for urban sewage treatment according to claim 4, characterized in that: A floating plate (88) is slidably connected to the outer side of the rotating shaft (82) close to the fixed plate (810); the outer side of the floating plate (88) is slidably connected to the inner wall of the fixed cylinder (81); a circular hole (89) is provided at the top edge of the floating plate (88); and a cylinder (86) is fixedly connected to the inner wall of the fixed cylinder (81).

6. The sewage treatment equipment suitable for urban sewage treatment according to claim 5, characterized in that: The cylinder (86) is located inside the circular hole (89), and the cylinder (86) is slidably connected to the floating plate (88) through the circular hole (89). An annular groove (87) is provided on the outer side of the cylinder (86) near the circular hole (89), and a fixing rod (84) is fixedly connected to the outer edge of the spiral plate (83).

7. The sewage treatment equipment suitable for urban sewage treatment according to claim 1, characterized in that: The limiting assembly (7) comprises a trapezoidal plate (71), the trapezoidal plate (71) being fixedly connected to the housing (2), the opening of the trapezoidal plate (71) being fixedly connected to the inner wall of the housing (2), and one end of the trapezoidal plate (71) away from the housing (2) being fixedly connected to the outer side of the fixing cylinder (81).

8. The sewage treatment equipment suitable for urban sewage treatment according to claim 7 is characterized in that: There are a plurality of trapezoidal plates (71), which are evenly distributed around the fixing cylinder (81), and an intermediate plate (72) is fixedly connected to the outer side of the side edge of the trapezoidal plate (71), and both ends of the intermediate plate (72) are fixedly connected to two adjacent trapezoidal plates (71).

9. The sewage treatment equipment suitable for urban sewage treatment according to claim 8, characterized in that: A stopper (79) is fixedly connected to the outer side of the shell (2) near the middle plate (72), and the stopper (79) and the trapezoidal plate (71) are arranged alternately. A filter plate (73) is fixedly connected to the outer side of the side of the trapezoidal plate (71) near the fixed cylinder (81), and there are a plurality of filter plates (73). The plurality of filter plates (73) are alternately arranged up and down at the interval between two adjacent trapezoidal plates (71).

10. The sewage treatment equipment suitable for urban sewage treatment according to claim 9, characterized in that: A slot (74) is provided at the opening of the trapezoidal plate (71), the slot (74) being located in the middle of two adjacent filter plates (73), a fixing ring (77) being fixedly installed inside the slot (74), a sector plate (75) being fixedly connected to the inner wall of the fixing ring (77), a guide block (76) being fixedly connected to the top of the sector plate (75), and a sector slot (78) being provided at one end of the sector plate (75) close to the fixing ring (77).

Images