Sewage treatment sedimentation tank

Abstract

The utility model relates to a sewage treatment sedimentation tank, belongs to the technical field of sewage treatment, and aims to solve the problems that part of sewage cannot be in full contact with a flocculating agent due to non-uniform spraying of the existing flocculating agent, and suspended particles, colloidal substances and the like in water cannot be effectively coagulated and settled. Through the arrangement of a water drainage pipe, a spraying assembly, a containing box, a water pump, a control valve, a notch, a guide plate, a water outlet pipe and a liquid outlet pipe, after sewage enters the sedimentation tank, the spraying assembly is started, the water pump pumps out a flocculating agent in the containing box, and the control valve is used for controlling the conveying flow of the flocculating agent; only part of the flocculating agent flows out of the liquid outlet pipe, and the rest part of the flocculating agent flows out of the notch through the inclined guide of the guide plate, so that the flocculating agent is sprayed all around, the moving assembly can move the spraying position, the flocculating agent cannot only gather at the spraying opening, spraying can be evenly distributed, sediment is discharged through the mud outlet, the flocculating agent can be evenly sprayed, and the sedimentation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment sedimentation tank. Background Technology

[0002] A wastewater sedimentation tank is an important piece of equipment or structure used in the wastewater treatment process to achieve solid-liquid separation. Its working principle is to use gravity to make suspended solid particles in the wastewater sink to the bottom of the tank under the action of gravity, thereby separating them from the upper clarified liquid. Wastewater enters the sedimentation tank through the inlet and flows slowly in the tank. The solid particles in it, because their density is greater than that of water, gradually sink to the bottom to form a sludge layer, while the clear water after sedimentation flows out from the outlet, achieving the purpose of preliminary purification of wastewater and removal of suspended impurities.

[0003] Chinese Patent Publication No. CN216039039U discloses a wastewater treatment sedimentation tank. A Roots blower and an inclined stirring screen are respectively installed in the pretreatment tank. Airflow is blown into the wastewater through the exhaust pipe of the Roots blower to generate bubbles, so that the wastewater can be fully mixed with flocculant. The stirring screen can facilitate the removal of oil stains from the wastewater.

[0004] The above-mentioned existing technical solutions have the following shortcomings: the flocculant will fall at the inlet and wait for the flocculant to slowly diffuse, resulting in uneven distribution of the flocculant. This will prevent some sewage from fully contacting the flocculant, and the suspended particles and colloidal substances in the water will not be effectively coagulated and precipitated, resulting in the treated water still containing more impurities and increased turbidity. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology, which is that uneven spraying of flocculants will prevent some sewage from fully contacting the flocculant, and the suspended particles and colloidal substances in the water will not be effectively coagulated and precipitated. This utility model proposes a sewage treatment sedimentation tank.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A sewage treatment sedimentation tank, comprising: a sedimentation tank, a sludge outlet at the lower end of the sedimentation tank, a spraying component for spraying flocculant slidably connected to one side of the sedimentation tank, a moving component for moving the spraying component on one side of the sedimentation tank, a filter screen snapped onto the inner wall of the sedimentation tank, a cleaning component for cleaning the filter screen inside the sedimentation tank, and a water outlet on one side of the sedimentation tank, with a sealing plug inside the water outlet;

[0007] The spraying assembly includes a holding tank located on one side of the sedimentation tank. A water pump is installed on the inner wall of the holding tank. A connecting pipe is installed at the outlet of the water pump. A control valve is installed on one side of the connecting pipe. A water outlet pipe is connected to the lower end of the connecting pipe. A slot is opened on the outer surface of the water outlet pipe. Multiple slots are opened. A guide plate is installed inside each set of slots. A liquid outlet pipe is installed between the multiple sets of guide plates.

[0008] Preferably, the filter screen is inclined, an opening is provided on one side of the sedimentation tank, the position of the opening corresponds to the lowest point of the filter screen, a waste bin is provided on one side of the opening, and a door is hinged to one side of the waste bin.

[0009] Preferably, the cleaning component includes a telescopic rod installed on the inner wall of the sedimentation tank. A fixing plate is provided on one side of the telescopic rod, and a connecting plate is provided at the lower end of the fixing plate. A connecting rod is provided on one side of the connecting plate, and a fixing plate is also provided on one side of the connecting rod. A spring is provided at the lower end of each set of fixing plates. Multiple sets of springs are provided. A mounting plate is provided at the lower end of every two sets of springs, and a brush is provided at the lower end of the mounting plate.

[0010] Preferably, the inner wall of the sedimentation tank is provided with a support plate, a motor is provided at the upper end of the support plate, a gear A is provided at the output end of the motor, and a cover is provided on the outer surface of the motor.

[0011] Preferably, a fixed shaft is provided on the inner wall of the sedimentation tank, and a gear B is rotatably connected to one side of the fixed shaft. Gear A and gear B are meshed together. A rotating shaft is provided on one side of gear B, and fixed frames are provided on both sides of the rotating shaft. A stirring net is provided inside the fixed frame.

[0012] Preferably, the moving component includes a slide rail disposed on one side of the sedimentation tank, a telescopic cylinder disposed on the inner wall of the slide rail, a slider slidably connected inside the slide rail, the telescopic cylinder being fixedly connected to the slider, and the slider being fixedly connected to the holding tank.

[0013] Compared with the prior art, the beneficial effects of this utility model include: through the arrangement of the drain pipe, spraying assembly, holding tank, water pump, control valve, trough, guide plate, water outlet pipe and liquid outlet pipe, after the sewage enters the sedimentation tank, the spraying assembly is activated, the water pump extracts the flocculant from the holding tank, the control valve is used to control the delivery flow rate of the flocculant, since the diameter of the liquid outlet pipe is much smaller than the diameter of the water outlet pipe, only part of the flocculant flows out from the liquid outlet pipe, and the remaining part is guided by the tilt of the guide plate and flows out from the trough, thereby spraying it in all directions. The moving assembly can move the spraying position, so the flocculant will not only accumulate at the spraying port, and the spraying can be evenly distributed. The sediment is discharged through the sludge outlet, which can evenly spray the flocculant and improve the sedimentation efficiency. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts.

[0015] in:

[0016] Figure 1 The schematic diagram shows the overall structure of a wastewater treatment sedimentation tank according to one embodiment of the present invention;

[0017] Figure 2 The schematic diagram shows a structural schematic of a wastewater treatment sedimentation tank spraying assembly according to one embodiment of the present invention;

[0018] Figure 3 The schematic diagram shows a structural schematic of a wastewater treatment sedimentation tank cleaning component according to one embodiment of the present invention;

[0019] Figure 4 The schematic diagram illustrates the internal structure of a sedimentation tank for wastewater treatment according to one embodiment of the present invention. Figure 1 ;

[0020] Figure 5 The schematic diagram illustrates the internal structure of a sedimentation tank for wastewater treatment according to one embodiment of the present invention. Figure 2 ;

[0021] Figure 6 The diagram schematically shows a half-sectional view of the effluent pipe of a sedimentation tank for wastewater treatment according to one embodiment of the present invention.

[0022] Figure 7 The schematic diagram shows a structural schematic of a moving assembly for a wastewater treatment sedimentation tank according to one embodiment of the present invention.

[0023] Numbered in the diagram: 1. Sedimentation tank; 11. Sludge outlet; 12. Opening; 13. Water outlet; 2. Waste bin; 3. Filter screen; 4. Spraying assembly; 41. Container tank; 42. Water pump; 43. Connecting pipe; 44. Control valve; 45. Groove; 46. Guide plate; 47. Liquid outlet pipe; 48. Water outlet pipe; 5. Cleaning assembly; 51. Telescopic rod; 52. Connecting rod; 53. Connecting plate; 54. Fixing plate; 55. Spring; 56. Mounting plate; 57. Brush; 6. Moving assembly; 61. Slide rail; 62. Telescopic cylinder; 63. Slider; 7. Support plate; 71. Motor; 72. Gear A; 73. Fixed shaft; 74. Gear B; 75. Rotating shaft; 76. Fixing frame; 77. Mixing screen. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods without changing the essential spirit of this utility model. Therefore, the following specific embodiments and accompanying drawings are merely exemplary descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction on the technical solution of this utility model.

[0025] According to one embodiment of the present invention, in conjunction with Figure 1 The diagram shows a wastewater treatment sedimentation tank, comprising: a sedimentation tank 1, a sludge outlet 11 at the lower end of the sedimentation tank 1, a spraying assembly 4 for spraying flocculant slidably connected to one side of the sedimentation tank 1, a moving assembly 6 for moving the spraying assembly 4 on one side of the sedimentation tank 1, a filter screen 3 snapped onto the inner wall of the sedimentation tank 1, a cleaning assembly 5 for cleaning the filter screen 3 inside the sedimentation tank 1, and a water outlet 13 on one side of the sedimentation tank 1, with a sealing plug inside the water outlet 13.

[0026] Example 1:

[0027] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 6 The spraying assembly 4 includes a holding tank 41 located on one side of the sedimentation tank 1. A water pump 42 is installed on the inner wall of the holding tank 41. A connecting pipe 43 is installed at the outlet end of the water pump 42. A control valve 44 is installed on one side of the connecting pipe 43. A water outlet pipe 48 is connected to the lower end of the connecting pipe 43. A slot 45 is opened on the outer surface of the water outlet pipe 48. Multiple sets of slots 45 are opened. A guide plate 46 is installed inside each set of slots 45. A liquid outlet pipe 47 is installed between the multiple sets of guide plates 46.

[0028] Specifically, after the sewage enters the sedimentation tank 1, the spraying assembly 4 is activated, and the water pump 42 extracts the flocculant from the holding tank 41. The control valve 44 is used to control the flow rate and on / off of the flocculant. The flocculant reaches the outlet pipe 48 through the connecting pipe 43. Since the diameter of the liquid outlet pipe 47 is much smaller than the diameter of the water outlet pipe 48, only part of the flocculant flows out from the liquid outlet pipe 47. The remaining part is guided by the inclined guide plate 46 and flows out from the slot 45, thus spraying it in all directions. The moving assembly 6 can move the spraying position so that the flocculant mixes with the sewage, causing the impurities in the sewage to coagulate. The coagulated impurities and sludge settle to the bottom of the sedimentation tank. The filter screen 3 can initially filter the suspended solids in the sewage. The water in the upper layer of the sealed plug flows out from the outlet 13. The fine impurities are coagulated by the flocculant to form larger precipitates, which are discharged through the sludge outlet 11 at the lower end along with the sludge precipitate. The flocculant will not only gather at the spraying nozzle, and the spraying can be evenly distributed. The suspended particles, colloidal substances and other substances in the water can be effectively coagulated and precipitated.

[0029] Example 2:

[0030] In this embodiment, please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The filter screen 3 is inclined, and an opening 12 is provided on one side of the sedimentation tank 1. The position of the opening 12 corresponds to the lowest point of the filter screen 3. A waste bin 2 is provided on one side of the opening 12, and a door is hinged to one side of the waste bin 2. The cleaning component 5 includes a telescopic rod 51 installed on the inner wall of the sedimentation tank 1. A fixing plate 54 is provided on one side of the telescopic rod 51, and a connecting plate 53 is provided at the lower end of the fixing plate 54. A connecting rod 52 is provided on one side of the connecting plate 53, and a fixing plate 54 is also provided on one side of the connecting rod 52. A spring 55 is provided at the lower end of each set of fixing plates 54. There are multiple sets of springs 55. An installation plate 56 is provided at the lower end of every two sets of springs 55. A brush 57 is provided at the lower end of the installation plate 56. The inner wall of the sedimentation tank 1 is provided with... The settling tank 1 has a support plate 7, a motor 71 at the upper end of the support plate 7, a gear A72 at the output end of the motor 71, a cover on the outer surface of the motor 71, a fixed shaft 73 on the inner wall of the settling tank 1, a gear B74 rotatably connected to one side of the fixed shaft 73, gear A72 meshing with gear B74, a rotating shaft 75 on one side of gear B74, fixed frames 76 on both sides of the rotating shaft 75, a stirring net 77 inside the fixed frame 76, and a moving component 6 including a slide rail 61 on one side of the settling tank 1, a telescopic cylinder 62 on the inner wall of the slide rail 61, a slider 63 slidably connected inside the slide rail 61, the telescopic cylinder 62 and the slider 63 being fixedly connected, and the slider 63 being fixedly connected to the holding box 41.

[0031] Specifically, when spraying flocculant, the telescopic cylinder 62 extends, causing the slider 63 to slide within the slide rail 61, thereby adjusting the position of the container 41 and thus the spraying position. This allows the flocculant spraying position to move, resulting in more uniform spraying. The wastewater in the sedimentation tank 1 does not exceed the support plate 7, reducing the probability of the motor 71 being corroded by wastewater. The motor 71 is protected by a cover, preventing wastewater from corroding it. Impurities slide along the inclined surface of the filter screen 3 to the lowest point and enter the waste bin 2 through the opening 12. When the cleaning component 5 is working, the telescopic rod... 51. The position is adjusted by extension. Spring 55 is always in a contracted state. Spring 55 can extend and retract according to the distance between mounting plate 56 and filter screen 3, so that brush 57 contacts filter screen 3. Under the action of spring 55, brush 57 adheres tightly to filter screen 3 for cleaning, sweeping impurities into waste bin 2. The impurities can be removed by opening the bin door. Motor 71 drives gear A72 to rotate. Gear A72 meshes with gear B74, so that gear B74 drives rotating shaft 75 and fixed frame 76 to rotate. Stirring screen 77 can stir sewage, so that flocculant and sewage are fully mixed and reacted.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A wastewater treatment sedimentation tank, characterized in that, include: A sedimentation tank is provided with a sludge outlet at the lower end of the sedimentation tank. A spraying component for spraying flocculant is slidably connected to one side of the sedimentation tank. A moving component for moving the spraying component is provided on one side of the sedimentation tank. A filter screen is snapped onto the inner wall of the sedimentation tank. A cleaning component for cleaning the filter screen is provided inside the sedimentation tank. A water outlet is opened on one side of the sedimentation tank. A sealing plug is provided inside the water outlet. The spraying assembly includes a holding tank located on one side of the sedimentation tank. A water pump is installed on the inner wall of the holding tank. A connecting pipe is installed at the outlet end of the water pump. A control valve is installed on one side of the connecting pipe. A water outlet pipe is connected to the lower end of the connecting pipe. A slot is opened on the outer surface of the water outlet pipe. Multiple sets of slots are opened. A guide plate is installed inside each set of slots. A liquid outlet pipe is installed between the multiple sets of guide plates.

2. The wastewater treatment sedimentation tank according to claim 1, characterized in that, The filter screen is inclined, and an opening is provided on one side of the sedimentation tank. The position of the opening corresponds to the lowest point of the filter screen. A waste bin is provided on one side of the opening, and a door is hinged to one side of the waste bin.

3. The wastewater treatment sedimentation tank according to claim 1, characterized in that, The cleaning assembly includes a telescopic rod installed on the inner wall of the sedimentation tank. A fixing plate is provided on one side of the telescopic rod, and a connecting plate is provided at the lower end of the fixing plate. A connecting rod is provided on one side of the connecting plate, and a fixing plate is also provided on one side of the connecting rod. A spring is provided at the lower end of each set of fixing plates. Multiple sets of springs are provided. A mounting plate is provided at the lower end of every two sets of springs, and a brush is provided at the lower end of the mounting plate.

4. The wastewater treatment sedimentation tank according to claim 1, characterized in that, The sedimentation tank is provided with a support plate on its inner wall, a motor is provided at the upper end of the support plate, a gear A is provided at the output end of the motor, and a cover is provided on the outer surface of the motor.

5. The wastewater treatment sedimentation tank according to claim 4, characterized in that, The sedimentation tank has a fixed shaft on its inner wall. A gear B is rotatably connected to one side of the fixed shaft. Gear A meshes with gear B. A rotating shaft is provided on one side of gear B. Fixed frames are provided on both sides of the rotating shaft. A stirring net is provided inside the fixed frames.

6. The wastewater treatment sedimentation tank according to claim 1, characterized in that, The moving component includes a slide rail disposed on one side of the sedimentation tank, a telescopic cylinder disposed on the inner wall of the slide rail, a slider slidably connected inside the slide rail, the telescopic cylinder being fixedly connected to the slider, and the slider being fixedly connected to the holding tank.

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