A sewage treatment tank

Abstract

The application relates to a sewage treatment tank and relates to the technical field of sewage treatment; the sewage treatment tank comprises a degradation tank body and a filter tank body, the filter tank body is communicated with the degradation tank body, a filter cylinder body is arranged inside the filter tank body along the height direction of the filter tank body, the top of the filter cylinder body is sealed, the bottom of the filter cylinder body penetrates the communication position of the filter tank body and the degradation tank body, there are supporting plates between the periphery of the filter cylinder body and the filter tank body, the height of all the supporting plates away from the filter cylinder body is lower than the height of the side close to the filter cylinder body, the filter tank body is communicated with a sewage inlet pipe; the sewage treatment tank further comprises a cleaning assembly which is used for cleaning the surface of the filter cylinder body; the sewage treatment tank has the effects of optimizing sewage treatment effect and improving sewage treatment efficiency.

Description

Technical Field

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

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment ponds are containers used to hold and purify wastewater. The purification process in wastewater treatment ponds generally includes filtration, flocculant degradation, and other methods.

[0003] Existing wastewater treatment tanks typically include a wastewater inlet pipe connected to the tank, and a filter screen installed inside. The filter screen divides the wastewater into a filtration zone and a degradation zone located below the filtration zone. It also includes a conveyor for supplying flocculant to the degradation zone. In actual use, wastewater is introduced into the wastewater treatment tank through the inlet pipe and first passes through the filter screen for filtration. Large particles of impurities in the wastewater are intercepted and retained on the filter screen surface. The filtered wastewater then flows into the degradation zone, where flocculant is introduced through the conveyor. The flocculant combines with the water, causing impurities in the water to form flocs and settle, achieving a relatively thorough separation of water and impurities.

[0004] Regarding the aforementioned technologies, impurities intercepted by the filter screen are deposited on the filter screen surface. As the amount of impurities deposited on the filter screen increases, the filtration speed of the filter screen for subsequent sewage entering the sewage treatment tank will slow down, resulting in low overall sewage treatment efficiency. Summary of the Invention

[0005] In order to improve the efficiency of sewage treatment, this application provides a sewage treatment pond.

[0006] This application provides a wastewater treatment tank, which adopts the following technical solution:

[0007] A wastewater treatment tank includes a degradation tank and a filtration tank. The filtration tank is connected to the degradation tank. A filter cylinder is installed inside the filtration tank along its height. The top of the filter cylinder is sealed, and the bottom of the filter cylinder penetrates through the connection point between the filtration tank and the degradation tank. A support plate is provided between the outer periphery of the filter cylinder and the filtration tank. The height of all support plates away from the filter cylinder is lower than the height of the side of the support plate closest to the filter cylinder. The filtration tank is connected to a wastewater inlet pipe. The tank also includes a cleaning component for cleaning the surface of the filter cylinder.

[0008] By adopting the above technical solution, the filter cylinder is set along the height direction of the filter tank, that is, vertically. Therefore, some of the impurities intercepted in the sewage can fall off under their own weight, thereby reducing the amount of impurities adhering to the surface of the filter cylinder. In addition, the receiving plate is used to receive the impurities filtered out in the sewage. This application limits the height of the receiving plate away from the filter cylinder to be lower than the height near the filter cylinder. Therefore, impurities can be deposited on the side away from the filter cylinder under the guidance of the receiving plate, further reducing the impact of impurities on the filtration effect of the filter cylinder. Furthermore, this application further adds a cleaning component for cleaning the surface of the filter cylinder, thereby further reducing the amount of impurities adhering to the surface of the filter cylinder and optimizing the filtration effect of the sewage.

[0009] Preferably, the receiving plate includes two interconnected support plates, which are arranged sequentially along the height direction of the filter cylinder and have a stepped cross-section; the height of the support plate near the filter cylinder is higher than the height of the support plate away from the filter cylinder; the sewage inlet pipe faces the surface of the bottom support plate.

[0010] By adopting the above technical solution, this solution limits the outlet of the sewage inlet pipe to face the bottom support plate, so that impurities in the sewage entering the sewage treatment tank can fall directly onto the support plate. Since the cross-section of the receiving plate formed by connecting all the support plates is stepped, this structure can block impurities from moving towards the filter cylinder, thereby reducing the problem of impurities clogging the filter holes of the filter cylinder.

[0011] Preferably, the support plate located away from the filter cylinder is inclined downward on the side away from the filter cylinder.

[0012] By adopting the above technical solution, the tilt of the support plate is limited, thereby further optimizing the guiding effect of the support plate on the impurities accumulated on its surface. This allows the impurities to concentrate and accumulate on the side of the support plate away from the filter cylinder, further reducing the impact of impurities on the filtration effect of the filter cylinder.

[0013] Preferably, one side of the support plate near the filter cylinder is hinged to the periphery of the filter cylinder, and the other side is hinged to a docking plate. The other side of the docking plate is movably connected to the surface of another support plate. The cleaning assembly includes a lifting component for driving the filter cylinder to move up and down along the height direction of the filter tank.

[0014] By adopting the above technical solution, the support plate and the connecting plate are rotated around the hinge point by raising and lowering the filter cylinder. This causes the support plate near the filter cylinder to tilt, allowing impurities on the surface of the support plate near the filter cylinder to fall onto the bottom support plate under the tilting guidance. This keeps the impurities away from the filter cylinder and further reduces the possibility of impurities clogging the filter cylinder's filter holes.

[0015] Preferably, a sliding plate is hinged to the side of the docking plate away from the filter cylinder, and the sliding plate is slidably connected to the surface of the support plate away from the filter cylinder. The lifting component includes a motor, a rotating rod, a pull rope, a docking gear, a docking rack, and a lower pressure plate. The rotating rod is rotatably connected to the filter tank body, and the motor drive end is connected to the end of the rotating rod to drive the rotating rod to rotate. One end of the pull rope is wound around the rotating rod, and the other end is connected to the top of the filter cylinder body. The docking gear is sleeved on the rotating rod, and the docking rack meshes with the docking gear. The docking rack is connected to the lower pressure plate, and the lower pressure plate is slidably connected to the filter tank body by the transmission action of the docking gear and the docking rack. The lower pressure plate is used to press against the hinge position between the docking plate and the support plate near the filter cylinder body during the sliding process, so that the sliding plate moves towards the inner wall of the filter tank body.

[0016] By adopting the above technical solution, when the moving part drives the filter cylinder to move upward and causes the support plate to tilt, the lower pressure plate moves downward and presses against the hinge position between the docking plate and the support plate near the filter cylinder under the rotation of the rotating rod and the transmission action of the docking gear and docking rack. This causes the sliding plate to move towards the filter tank, thereby scraping the surface of the support plate near the filter tank to further push the impurities away from the filter cylinder.

[0017] Preferably, the cleaning component further includes a limiting plate, which is inserted into the inner side of the filter cartridge and fits against the inner wall of the filter cartridge.

[0018] By adopting the above technical solution, the limiting plate is used to restrict the lifting and lowering movement of the filter cylinder, so as to ensure that the lower plate can accurately press against the hinge position between the docking plate and the support plate near the filter cylinder when it is pressed down, and so that the slide plate can slide relative to the support plate in a direction away from the filter cylinder.

[0019] Preferably, the scraper is provided with bristles on the side facing the filter cylinder, and the bristles abut against the surface of the filter cylinder.

[0020] By adopting the above technical solution, when the filter cylinder moves up and down, the filter cylinder moves relative to the scraper, so that the bristles on the surface of the scraper scrape the filter cylinder, thereby cleaning the surface of the filter cylinder.

[0021] Preferably, a stirring rod is rotatably connected inside the degradation tank, the stirring rod is provided with stirring blades, and a rotating component for driving the stirring rod to rotate is provided inside the degradation tank.

[0022] By adopting the above technical solution, the rotating component drives the stirring rod to rotate, thereby using the stirring rod and its surface stirring blades to fully mix the flocculant and water in the degradation tank, thus optimizing the sedimentation and separation effect of the flocculant on the water.

[0023] Preferably, the filter tank is provided with a pusher plate and a pusher component. The pusher component is used to drive the pusher plate through the filter tank and slide back and forth along the length of the support plate. During the sliding process of the pusher plate, the pusher plate is attached to the surface of the support plate away from the filter cylinder.

[0024] By adopting the above technical solution, the pusher plate is slid by the pusher component, and during the sliding process of the pusher plate, the pusher plate is attached to the surface of the support plate, so that the impurities on the surface of the support plate can be pushed out of the filter tank by the pusher plate.

[0025] Preferably, the pusher includes a linkage rod and a return spring. The return spring is disposed between the pusher plate and the filter tank body, and the extension and retraction direction of the return spring is parallel to the sliding direction of the pusher plate. The linkage rod is disposed on the stirring rod. When the return spring is not deformed, the pusher plate is located at the end of the filter tank body, and at this time the pusher plate is located on the rotation path of the linkage rod as it rotates with the stirring rod.

[0026] By adopting the above technical solution, the rotation of the stirring rod drives the rotation of the linkage rod. When the linkage rod rotates to contact the pusher plate, the linkage rod pushes the pusher plate so that the pusher plate slides along the length of the support plate, thereby pushing the impurities on the surface of the support plate out of the filter tank.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] The filter cylinder is installed vertically along the height of the filter tank, so some of the impurities intercepted in the wastewater can fall off under their own weight, thereby reducing the amount of impurities adhering to the surface of the filter cylinder. In addition, the receiving plate is used to receive the impurities filtered out of the wastewater. This application limits the height of the receiving plate away from the filter cylinder to be lower than the height near the filter cylinder. Therefore, impurities can be deposited on the side away from the filter cylinder under the guidance of the receiving plate, further reducing the impact of impurities on the filtration effect of the filter cylinder. Furthermore, this application adds a cleaning component for cleaning the surface of the filter cylinder, thereby further reducing the amount of impurities adhering to the surface of the filter cylinder and optimizing the filtration effect of the wastewater. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a sewage treatment tank disclosed in an embodiment of this application.

[0030] Figure 2 yes Figure 1 Sectional view along the AA direction.

[0031] Figure 3 yes Figure 1 Sectional view along the BB direction.

[0032] Explanation of reference numerals in the attached drawings: 1. Filter tank body; 11. Sewage inlet pipe; 12. Filter cylinder body; 13. Receiving plate; 131. Support plate; 1311. Receiving tank; 132. Connecting plate; 133. Slide plate; 14. Pushing plate; 15. Pushing component; 151. Return spring; 152. Linkage rod; 2. Degradation tank body; 21. Water outlet pipe; 22. Pump; 23. Stirring rod; 231. Stirring blade; 232. Rotating component; 3. Cleaning assembly; 31. Lifting component; 311. Motor; 312. Rotating rod; 313. Pull rope; 314. Connecting gear; 315. Connecting rack; 316. Lower pressure plate; 32. Limiting plate; 321. Brush bristles. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a wastewater treatment tank. (Refer to...) Figure 1 and Figure 2 The wastewater treatment tank includes a degradation tank 2 and a filter tank 1 located on the top of the inner wall of the degradation tank 2. The bottom of the filter tank 1 is connected to the degradation tank 2. A wastewater inlet pipe 11 is connected to the top of the filter tank 1, and an outlet pipe 21 and a valve for opening and closing the outlet pipe 21 are connected to the side wall at the top of the degradation tank 2. A filter cylinder 12 is installed inside the filter tank 1, which divides the filter tank 1 into a filtration zone and an impurity retention zone. The filtration zone is connected to the degradation tank 2. Wastewater enters the wastewater treatment tank through the wastewater inlet pipe 11, is filtered by the filter cylinder 12, and then flows into the degradation tank 2, where it mixes with the chemical agents in the degradation tank 2 for further purification.

[0035] Reference Figure 2 and Figure 3 A receiving plate 13 is connected to the lower end of the filter cylinder 12. The receiving plate 13 includes two support plates 131 and a connecting plate 132 hinged between the two support plates 131. One support plate 131 is hinged to the lower end of the filter cylinder 12, and a sliding plate 133 is provided between the other support plate 131 and the connecting plate 132. The sliding plate 133 is slidably connected to the support plate by a spring, and the sliding plate 133 is hinged to the connecting plate 132. The support plate 131 located away from the filter cylinder 12 is fixedly connected to the inner wall of the filter tank 1, and the side of the support plate 131 used for fixed connection to the filter tank 1 is inclined downward. The sewage inlet pipe 11 faces the upper surface of the support plate 131 located away from the filter cylinder 12.

[0036] Reference Figure 2 and Figure 3It also includes a cleaning component 3, which includes a lifting component 31 and a limiting plate 32. There can be several limiting plates 32, and the limiting plates 32 are evenly distributed along the height direction of the filter cylinder 12. The limiting plates 32 are fixedly connected to the inner wall of the filter tank 1 and inserted into the inner side of the filter cylinder 12. The side wall of the limiting plate 32 facing the filter cylinder 12 is provided with bristles 321, and the bristles 321 abut against the surface of the filter cylinder 12.

[0037] Reference Figure 2 and Figure 3 The lifting component 31 is used to drive the filter cylinder 12 to rise and fall. Specifically, the lifting component 31 includes a motor 311, a rotating rod 312, a pull rope 313, a docking gear 314, a docking rack 315, and a lower pressure plate 316. The motor 311 is installed on the side wall of the filter tank 1, and the drive shaft of the motor 311 is connected to the rotating rod 312. The rotating rod 312 is rotated and connected to the filter tank 1 by the drive of the motor 311. One end of the pull rope 313 is wrapped around the rotating rod 312, and the other end is fixedly connected to the top of the filter cylinder 12. The docking gear 314 is fixedly sleeved on the rotating rod 312. The docking rack 315 meshes with the docking gear 314, and the docking rack 315 slides parallel to the direction of lifting and lowering the filter cylinder 12 and is connected to the filter tank 1. The lower pressure plate 316 is connected to the lower end of the docking rack 315, and the lower pressure plate 316 is used to press against the hinge position between the docking plate 132 and the support plate near the filter cylinder 12 when it moves down with the docking rack 315, so that the slide plate 133 slides towards the inside of the filter tank 1, thereby deforming the spring connecting the slide plate 133 and the support plate 131. When the lower pressure plate 316 moves up and releases the pressure on the aforementioned hinge position, the slide plate 133 will move towards the filter cylinder 12 under the action of the spring force until it moves to the... Figure 3 The state shown, and Figure 3 The state shown is the initial state before the filter cylinder 12 moves upward.

[0038] Reference Figure 2 and Figure 3 A pump 22 is installed at the top of the degradation tank 2. The inlet of the pump 22 is connected to a chemical agent supply source. In this embodiment, the chemical agent is specifically a flocculant. The outlet of the pump 22 is connected to the degradation tank 2. A stirring rod 23 is installed inside the degradation tank 2. Stirring blades 231 are integrally formed on the periphery of the stirring rod 23 along its height direction. A rotating component 232 for driving the stirring rod 23 to rotate is provided at the top of the degradation tank 2. Specifically, the rotating component 232 can be a motor 311 installed at the top of the degradation tank 2. The drive shaft of the motor 311 is connected to the top of the stirring rod 23.

[0039] Reference Figure 2 and Figure 3A pusher plate 14 is inserted through the end of the filter tank body 1. The pusher plate 14 is located above the end of the support plate 131, which is away from the filter cylinder body 12. A pusher component 15 is also provided. The pusher component 15 is used to drive the pusher plate 14 through the filter tank body 1 and slide back and forth along the length of the support plate 131. During the movement of the pusher plate 14, the pusher plate 14 is attached to the upper surface of the support plate 131 so that the impurities on the support plate 131 can be pushed by the pusher plate 14 into the receiving groove 1311 located at the end of the support plate 131, so that the operator can open the sludge discharge door preset on the end wall of the filter tank body 1 and discharge the impurities from the receiving groove 1311.

[0040] Reference Figure 2 and Figure 3 The pusher 15 includes a linkage rod 152 and a return spring 151. The return spring 151 is connected between the pusher plate 14 and the filter tank 1, and the linkage rod 152 is disposed on the side wall of the stirring rod 23. When the return spring 151 is not deformed, the pusher plate 14 is located at the end of the filter tank 1. At this time, the pusher plate 14 is located on the path of the linkage rod 152 rotating with the stirring rod 23, so that the pusher plate 14 can slide by means of the linkage rod 152 abutting against the pusher plate 14.

[0041] The implementation principle of a sewage treatment tank according to an embodiment of this application is as follows: Sewage is transported to the filter tank 1 through the sewage inlet pipe 11. The sewage flows directly onto the bottom support plate 131. Some impurities in the sewage are trapped on the bottom support plate 131 by the interception of the docking plate 132. Then, the sewage is filtered through the filter cylinder 12 and flows into the degradation tank 2. Chemical agents are drawn in by the pump 22 to mix with the sewage, thereby achieving further separation of impurities from the water. After a period of use, the filter cylinder 12 is moved upward by the lifting component 31. During this process, the support plate 131 at the top tilts, and the lower pressure plate 316 presses down against the hinge position of the support plate 131 and the docking plate 132, so that the docking plate 132 tilts further. This causes the sliding plate 133 to slide relative to the bottom support plate 131, so that the impurities on the bottom support plate are pushed away from the filter cylinder 12 by the sliding plate 133.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wastewater treatment tank, comprising a degradation tank (2) and a filtration tank (1), wherein the filtration tank (1) is connected to the degradation tank (2), characterized in that: The filter tank (1) has a filter cylinder (12) arranged inside it along its height direction. The top of the filter cylinder (12) is sealed, and the bottom of the filter cylinder (12) passes through the connection between the filter tank (1) and the degradation tank (2). There is a support plate (13) between the outer periphery of the filter cylinder (12) and the filter tank (1). The height of all support plates (13) away from the filter cylinder (12) is lower than the height of the side of the support plate (13) near the filter cylinder (12). The filter tank (1) is connected to a sewage inlet pipe (11). It also includes a cleaning component (3) for cleaning the surface of the filter cylinder (12). The support plate (13) includes two interconnected support plates (131). The support plates (131) are arranged sequentially along the height direction of the filter cylinder (12) and have a stepped cross-section. The height of the support plate (131) near the filter cylinder (12) is higher than that away from the filter cylinder. The height of the support plate (131) at the body (12); the sewage inlet pipe (11) faces the surface of the bottom support plate (131), one side of the support plate (131) near the filter cylinder (12) is hinged to the periphery of the filter cylinder (12), and the other side is hinged to a docking plate (132), the other side of the docking plate (132) is movably connected to the surface of another support plate (131), the cleaning assembly (3) includes a component for driving the filter cylinder (12) along the filter tank The body (1) has a lifting component (31) that moves vertically in the height direction; a sliding plate (133) is hinged to the side of the docking plate (132) away from the filter cylinder (12), and the sliding plate (133) is slidably connected to the surface of the support plate (131) away from the filter cylinder (12); the lifting component (31) includes a motor (311), a rotating rod (312), a pull rope (313), a docking gear (314), a docking rack (315), and a lower pressure plate (316); The rotating rod (312) is rotatably connected to the filter tank body (1). The driving end of the motor (311) is connected to the end of the rotating rod (312) to drive the rotating rod (312) to rotate. One end of the pull rope (313) is wound around the rotating rod (312), and the other end is connected to the top of the filter cylinder body (12). The mating gear (314) is sleeved on the rotating rod (312), and the mating rack (315) meshes with the mating gear (314). The docking rack (315) is connected to the lower pressure plate (316). The lower pressure plate (316) slides and is connected to the filter tank body (1) by the transmission action of the docking gear (314) and the docking rack (315). The lower pressure plate (316) is used to press against the hinge position of the docking plate (132) and the support plate (131) near the filter cylinder (12) during the sliding process, so that the sliding plate (133) moves towards the inner wall of the filter tank body (1).

2. The sewage treatment tank according to claim 1, characterized in that: The support plate (131) located away from the filter cylinder (12) is inclined downward on the side away from the filter cylinder (12).

3. The sewage treatment tank according to claim 1, characterized in that: The cleaning component (3) also includes a limiting plate (32), which is inserted into the inner side of the filter cylinder (12) and fits against the inner wall of the filter cylinder (12).

4. The sewage treatment tank according to claim 3, characterized in that: The limiting plate (32) is provided with bristles (321) on the side facing the filter cylinder (12), and the bristles (321) abut against the surface of the filter cylinder (12).

5. The sewage treatment tank according to claim 1, characterized in that: A stirring rod (23) is rotatably connected inside the degradation tank (2). A stirring blade (231) is provided on the stirring rod (23). A rotating component (232) for driving the stirring rod (23) to rotate is provided inside the degradation tank (2).

6. The sewage treatment tank according to claim 5, characterized in that: The filter tank (1) is provided with a pusher plate (14) and a pusher component (15). The pusher component (15) is used to drive the pusher plate (14) through the filter tank (1) and slide back and forth along the length of the support plate (131). During the sliding process of the pusher plate (14), the pusher plate (14) is attached to the surface of the support plate (131) away from the filter cylinder (12).

7. The sewage treatment tank according to claim 6, characterized in that: The pusher (15) includes a linkage rod (152) and a return spring (151). The return spring (151) is located between the pusher plate (14) and the filter tank (1), and the extension and retraction direction of the return spring (151) is parallel to the sliding direction of the pusher plate (14). The linkage rod (152) is located on the stirring rod (23). When the return spring (151) is not deformed, the pusher plate (14) is located at the end of the filter tank (1), and at this time the pusher plate (14) is located on the rotation path of the linkage rod (152) as the stirring rod (23) rotates.

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