Sedimentation tank

Abstract

The utility model relates to the technical field of sedimentation tanks, in particular to a sedimentation tank which comprises a water outlet cylinder vertically arranged in the middle of the sedimentation tank, a water outlet weir is arranged in the water outlet cylinder, and the lower end of the water outlet cylinder is connected with filtering equipment through a pipeline; the supporting shaft is arranged in the water outlet cylinder and is coaxial with the water outlet cylinder; the middle of the rotating platform is connected with a top rotating shaft of the supporting shaft. Two rotating assemblies are arranged at the two ends of the rotating platform correspondingly. A connecting rod at the upper end of the water tank is connected with the lower surface of the rotating platform; a drain pipe on the water tank is communicated with the water outlet cylinder; the multiple mud scraping pipes are arranged below the water containing tank in parallel at intervals, the upper ends of the mud scraping pipes communicate with the water containing tank, and each mud scraping plate is connected with the air exhaust assembly; the multiple mud scraping covers correspond to the multiple mud scraping pipes one to one, the mud scraping covers are communicated with the lower ends of the mud scraping pipes, mud scraping plates are arranged on one sides of the lower ends of the mud scraping covers, and the mud scraping covers and the mud scraping plates are obliquely arranged. The sludge scraper has the advantages that the sludge scraping period is shortened, and the overall sludge treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sedimentation tank technology, specifically to a sedimentation tank. Background Technology

[0002] Sedimentation tanks are crucial units in wastewater treatment systems for solid-liquid separation. During solid-liquid separation, a large amount of sludge accumulates at the bottom of the sedimentation tank, requiring scrapers to remove it and gradually move it into the sludge hopper at the bottom of the tank. However, due to the large area of ​​the sedimentation tank, the scrapers must slowly move the sludge from the front or other locations towards the sludge hopper at the rear, resulting in a long scraping path. During the scraping process, the scrapers need to operate continuously for a considerable time to collect all the sludge into the sludge hopper, leading to a long scraping cycle, low efficiency, and impacting the overall sludge treatment efficiency. Utility Model Content

[0003] In view of this, the present invention provides a sedimentation tank, which aims to solve the problems of long sludge scraping cycle and low efficiency in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sedimentation tank, comprising:

[0005] A sedimentation tank has a vertically installed outlet cylinder in the middle, and an outlet weir is installed inside the outlet cylinder. The lower end of the outlet cylinder is connected to a filtration device through a pipeline, and the upper end of the outlet cylinder is higher than the outlet weir.

[0006] A support shaft is disposed inside the water outlet cylinder and is coaxial with the water outlet cylinder;

[0007] A rotating platform, the middle of which is connected to the top rotating shaft of the support shaft, and two rotating components are respectively provided at both ends of the rotating platform;

[0008] A water tank, the connecting rod at its upper end of which is connected to the lower surface of the rotating platform, and the drain pipe on the water tank is connected to the water outlet cylinder;

[0009] Multiple sludge scraping pipes are arranged in parallel and spaced apart below the water tank. The upper end of each sludge scraping pipe is connected to the water tank, and each sludge scraper is connected to the air extraction assembly.

[0010] Multiple mud scraper covers correspond one-to-one with multiple mud scraper tubes. The lower ends of the mud scraper covers and mud scraper tubes are connected. A mud scraper plate is provided on one side of the lower end of the mud scraper cover. Both the mud scraper cover and the mud scraper plate are inclined.

[0011] A further improvement of this utility model is that the air extraction assembly includes multiple air extraction pipes, which correspond one-to-one with the multiple mud scraping pipes. The first end of the air extraction pipe is connected to the mud scraping pipe, and the second end is connected to the air inlet pipe on the air extraction pump.

[0012] A further improvement of this utility model is that each of the sludge scraping pipes is provided with a blocking component at its upper end. The blocking component includes a lifting shaft, which is disposed in the water tank. The lower end of the lifting shaft is tapered, and the upper end is connected to the lifting component. The lifting shaft moves up and down under the action of the lifting component.

[0013] A further improvement of this utility model is that the lifting assembly includes a screw, which is disposed on the rotating platform and coaxial with the lifting shaft. The lower end of the screw is nested in the upper end of the lifting shaft and is threadedly connected to the lifting shaft. The upper end of the screw is connected to the rotating shaft of the rotating platform and a handwheel is provided therethrough. The upper end of the lifting shaft and the baffles on both sides of the upper end are slidably connected to and pass through the top of the water tank.

[0014] A further improvement of this utility model is that the rotating assembly includes:

[0015] Two rotating wheels are rotatably positioned below the rotating platform and make rolling contact with the sedimentation tank;

[0016] An electric motor is mounted on the rotating platform, and its power output end is connected to one of the rotating wheels.

[0017] A further improvement of this utility model is that the rotating platform and the top of the water tank are both perforated partitions.

[0018] A further improvement of this utility model is that railings are provided on both symmetrical sides of the rotating platform.

[0019] A further improvement of this utility model is that the top of the water tank is higher than the outlet weir.

[0020] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0021] This invention provides a sedimentation tank. After sewage enters the sedimentation tank, heavier particles settle to the bottom of the tank under gravity, while clear water is discharged through the effluent weir. When scraping sludge, the scraper, under the action of the air extraction component, uses negative pressure to transport the sludge from the bottom of the tank to the water tank via the scraper cover and scraper pipe. The scraper cover and scraper are inclined, which makes the contact area and contact angle between the scraper and the sludge more reasonable. During the scraping process, it can cut into the sludge layer with less resistance, reducing friction and resistance during scraping and improving the scraping effect. The rotating platform can rotate around the support shaft under the action of two rotating components, driving the water tank, scraper pipe, scraper cover, and scraper to rotate synchronously, so that the scraping range covers the entire bottom of the sedimentation tank, improving the comprehensiveness of scraping. Compared with the prior art, the scraper can conveniently pump the sludge into the water tank through the air extraction component while scraping, which can effectively reduce the scraping cycle and improve the overall sludge treatment efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a sedimentation tank according to the present invention;

[0024] Figure 2 This is a schematic diagram of the air extraction component of a sedimentation tank according to the present invention;

[0025] Figure 3 This is a schematic diagram of the barrier component of a sedimentation tank according to the present invention;

[0026] Figure 4 This is a schematic diagram of the rotating assembly of a sedimentation tank according to the present invention;

[0027] Figure 5 This is a schematic diagram of the sludge scraper pipe of a sedimentation tank according to the present invention;

[0028] Explanation of reference numerals in the attached figures:

[0029] 10-Sedimentation tank, 101-Effluent cylinder, 102-Effluent weir, 103-Pipeline, 11-Support shaft, 12-Rotating platform, 121-Baluster, 13-Water tank, 131-Drainage pipe, 132-Perforated baffle, 14-Sludge scraper pipe, 15-Sludge scraper cover, 16-Sludge scraper plate, 20-Air extraction assembly, 21-Air extraction pipe, 22-Air extraction pump, 23-Air inlet pipe, 30-Blocking assembly, 31-Lifting shaft, 311-Conical shape, 312-Blocking plate, 32-Screw, 40-Rotating assembly, 41-Rotating wheel, 42-Motor. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details hindering the description of the present invention.

[0031] This utility model provides a sedimentation tank, which, in conjunction with the appendix to the instruction manual, is described below. Figure 1To be continued Figure 5 It can be seen that a sedimentation tank mainly includes the following parts or components: sedimentation tank 10, support shaft 11, rotating platform 12, water tank 13, sludge scraper pipe 14, and sludge scraper cover 15.

[0032] In this utility model, a water outlet cylinder 101 is fixedly and vertically arranged in the middle of the sedimentation tank 10, and a water outlet weir 102 is fixedly arranged in the sedimentation tank 10. The lower end of the water outlet cylinder 101 is connected to a filtration device (not shown in the figure) through a pipe 103, and the upper end of the water outlet cylinder 101 is higher than the water outlet weir 102. A support shaft 11 is fixedly arranged inside the water outlet cylinder 101 and is coaxial with the water outlet cylinder 101. The middle part of the rotating platform 12 is connected to the top shaft of the support shaft 11, and two rotating components 40 are respectively arranged at both ends of the rotating platform 12. The connecting rod at the upper end of the water tank 13 ( (Not shown in the figure) is connected to the lower surface of the rotating platform 12. The drain pipe 131 on the water tank 13 is connected to the water outlet cylinder 101. Multiple sludge scraping pipes 14 are fixedly arranged in parallel and at intervals below the water tank 13. The upper end of the sludge scraping pipe 14 is connected to the water tank 13. Each sludge scraping plate 16 is connected to the air extraction component 20. Multiple sludge scraping covers 15 correspond one-to-one with multiple sludge scraping pipes 14. The lower end of the sludge scraping cover 15 is connected to the lower end of the sludge scraping pipe 14. A sludge scraping plate 16 is fixedly arranged on one side of the lower end of the sludge scraping cover 15. Both the sludge scraping cover 15 and the sludge scraping plate 16 are inclined.

[0033] Specifically, a pump is connected to the end of the drain pipe 131 inside the water tank 13, which can pump the sludge in the water tank 13 to the water outlet cylinder 101. The upper end of the water outlet cylinder 101 is higher than the water outlet weir 102, which can prevent clean water from entering the water outlet cylinder 101.

[0034] Specifically, the filtration equipment is existing technology and will not be discussed in detail here.

[0035] Specifically, the top of the water tank 13 is higher than the outlet weir 102. It can be seen that the water tank 13 is higher than the water surface in the sedimentation tank 10, which can prevent the upper layer of clear water from entering the water tank 13.

[0036] As one embodiment, in conjunction with the appendix to the specification Figure 2 It can be seen that the air extraction assembly 20 includes multiple air extraction pipes 21, which correspond one-to-one with multiple mud scraping pipes 14. The first end of the air extraction pipe 21 is connected to the mud scraping pipe 14, and the second end is connected to the air inlet pipe 23 on the air extraction pump 22.

[0037] The air pump 22 draws air into the sludge scraping pipe 14 through the air inlet pipe 23 and the air extraction pipe 21, creating a negative pressure inside, which can then draw the scraped sludge from the sludge scraping cover 15 and the sludge scraping pipe 14 into the water tank 13.

[0038] Specifically, when air is drawn from the scraper pipe 14, the amount of air inside the scraper pipe 14 decreases, resulting in a drop in air pressure inside the scraper pipe 14. The sludge and water at the bottom of the scraper pipe 14 are connected to the outside atmosphere, and the outside atmospheric pressure is greater than the air pressure inside the scraper pipe 14. Under this pressure difference, the water and sludge are forced from the bottom of the scraper pipe 14 to the top by the outside atmospheric pressure, thus achieving the effect of drawing water and sludge from the bottom into the water tank 13 at the top.

[0039] Specifically, the air pump 22 and the air inlet pipe 23 are both installed on the rotating platform 12.

[0040] In this embodiment, refer to the appendix to the specification. Figure 3 Each scraper pipe 14 is equipped with a blocking assembly 30 at its upper end. The blocking assembly 30 includes a lifting shaft 31, which is installed inside the water tank 13. The lower end of the lifting shaft 31 is tapered 311, and the upper end is connected to the lifting assembly. The lifting shaft 31 moves up and down under the action of the lifting assembly. The lifting assembly includes a screw 32, which is installed on the rotating platform 12 and is coaxial with the lifting shaft 31. The lower end of the screw 32 is nested in the upper end of the lifting shaft 31 and is threadedly connected to the lifting shaft 31. The upper end of the screw 32 is connected to the rotating shaft of the rotating platform 12 and passes through it, and a handwheel (not shown in the figure) is fixedly installed thereafter. The upper end of the lifting shaft 31 and the blocking plates 312 on both sides of the upper end are slidably connected to and pass through the top of the water tank 13.

[0041] When sludge is sent to the water tank 13 through the sludge scraper pipe 14, the amount of sludge sucked up is also different due to the uneven distribution of sludge. The blocking component 30 can block the top of the sludge scraper pipe 14 where the amount of sludge sucked up is less, thereby reducing water discharge. Specifically, the blocking method is as follows: turn the handwheel, which drives the screw 32 to rotate. The screw 32 rotates inside the lifting shaft 31. The blocking plates 312 on both sides can prevent the lifting shaft 31 from rotating synchronously with the screw 32. Under the action of the threaded connection, the lifting shaft 31 begins to rise and fall. The diameter of the larger end of the cone 311 below the lifting shaft 31 is adapted to the inner diameter of the sludge scraper pipe 14. The cone 311 can block the upper end of the sludge scraper pipe 14 to different degrees as needed based on the amount of sludge to be sucked out.

[0042] As one embodiment, in conjunction with the appendix to the specification Figure 4 The rotating assembly 40 includes two rotating wheels 41, which are rotatably disposed below the rotating platform 12 and roll in contact with the sedimentation tank 10; the motor 42 is fixedly disposed on the rotating platform 12, and its power output end is connected to one of the rotating wheels 41.

[0043] Motor 42 drives one of the rotating wheels 41 to rotate, and the other rotating wheel 41 is driven by it, which can drive the rotating platform 12 to rotate around the support shaft 11. The rotating platform 12 drives the water tank 13, the sludge scraper pipe 14, the sludge scraper cover 15, and the sludge scraper 16 to rotate synchronously, which can thoroughly clean the sludge in the sedimentation tank 10.

[0044] As one embodiment, in conjunction with the appendix to the specification Figure 2 To be continued Figure 3 Both the rotating platform 12 and the top of the water tank 13 are perforated partitions 132. This allows for easy observation of the area below the rotating platform 12 or inside the water tank 13.

[0045] As one embodiment, in conjunction with the appendix to the specification Figure 1 The rotating platform 12 is symmetrically equipped with railings 121 on both sides. Operators can hold onto the railings 121 while on the rotating platform 12 to prevent themselves from falling into the sedimentation tank 10.

[0046] This utility model provides a sedimentation tank, and its specific operation process during use is as follows:

[0047] After the wastewater enters the sedimentation tank 10, the heavier particles settle to the bottom of the tank under gravity, while the clear water is discharged through the effluent weir 102. The effluent weir 102 has an outlet to discharge the clear water to where it is needed. When the scraper 16 scrapes the sludge, under the action of the suction component 20, the negative pressure is used to transport the sludge from the bottom of the tank through the scraper cover 15 and scraper pipe 14 to the water tank 13. The water tank 13 sends the pumped-up sludge and some water to the effluent outlet 101 through the drain pipe 131. The sludge in the effluent outlet 101 is then sent to the filtration equipment through the pipeline 103 for further processing. The scraper cover 15 and scraper 16 are inclined to allow for... The contact area and contact angle between the scraper blade 16 and the sludge are made more reasonable, so that it can cut into the sludge layer with less resistance during the scraping process, reducing friction and resistance during scraping and improving the scraping effect. The rotating platform 12 can rotate around the support shaft 11 under the action of the two rotating components 40, driving the water tank 13, scraper pipe 14, scraper cover 15, and scraper blade 16 to rotate synchronously, so that the scraping range covers the bottom of the entire sedimentation tank 10, improving the comprehensiveness of scraping. While scraping sludge, the scraper blade 16 can conveniently pump the sludge into the water tank 13 through the air extraction component 20, which can effectively reduce the scraping cycle and improve the overall sludge treatment efficiency.

[0048] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A sedimentation tank, characterized in that, include: A sedimentation tank has a vertically installed outlet cylinder in the middle, and an outlet weir is installed inside the outlet cylinder. The lower end of the outlet cylinder is connected to a filtration device through a pipeline, and the upper end of the outlet cylinder is higher than the outlet weir. A support shaft is disposed inside the water outlet cylinder and is coaxial with the water outlet cylinder; A rotating platform, the middle of which is connected to the top rotating shaft of the support shaft, and two rotating components are respectively provided at both ends of the rotating platform; A water tank, the connecting rod at its upper end of which is connected to the lower surface of the rotating platform, and the drain pipe on the water tank is connected to the water outlet cylinder; Multiple sludge scraping pipes are arranged in parallel and spaced apart below the water tank. The upper end of each sludge scraping pipe is connected to the water tank, and each sludge scraper is connected to the air extraction assembly. Multiple mud scraper covers correspond one-to-one with multiple mud scraper tubes. The lower ends of the mud scraper covers and mud scraper tubes are connected. A mud scraper plate is provided on one side of the lower end of the mud scraper cover. Both the mud scraper cover and the mud scraper plate are inclined.

2. A sedimentation tank according to claim 1, characterized in that, The air extraction assembly includes multiple air extraction pipes, each corresponding to one of the multiple mud scraping pipes. The first end of each air extraction pipe is connected to the mud scraping pipe, and the second end is connected to the air inlet pipe on the air extraction pump.

3. A sedimentation tank according to claim 2, characterized in that, Each of the sludge scraper pipes is equipped with a blocking component at its upper end. The blocking component includes a lifting shaft, which is located inside the water tank. The lower end of the lifting shaft is tapered, and the upper end is connected to the lifting component. The lifting shaft moves up and down under the action of the lifting component.

4. A sedimentation tank according to claim 3, characterized in that, The lifting assembly includes a screw, which is disposed on the rotating platform and coaxial with the lifting shaft. The lower end of the screw is nested in the upper end of the lifting shaft and is threadedly connected to the lifting shaft. The upper end of the screw is connected to the rotating shaft of the rotating platform and a handwheel is provided therethrough. The upper end of the lifting shaft and the baffles on both sides of the upper end are slidably connected to and pass through the top of the water tank.

5. A sedimentation tank according to claim 1, characterized in that, The rotating assembly includes: Two rotating wheels are rotatably positioned below the rotating platform and make rolling contact with the sedimentation tank; An electric motor is mounted on the rotating platform, and its power output end is connected to one of the rotating wheels.

6. A sedimentation tank according to claim 1, characterized in that, Both the rotating platform and the top of the water tank are perforated partitions.

7. A sedimentation tank according to claim 1, characterized in that, The rotating platform is equipped with railings on both symmetrical sides.

8. A sedimentation tank according to claim 1, characterized in that, The top of the water tank is higher than the outlet weir.

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