Vertical-flow sedimentation tank and sewage treatment equipment

Abstract

The present application relates to sewage treatment field, disclose a kind of vertical flow type sedimentation tank and sewage treatment equipment, vertical flow type sedimentation tank includes jar body, collection container, drive device, residue storage bin and plug valve, wherein, jar body top is open, central inside jar body is equipped with standpipe, and gap is left between the lower end of standpipe and the bottom of jar body, and the side wall of standpipe is connected with inlet pipe;Collection container is rotatably connected with the top of standpipe, and notch and multiple scrapers are arranged on the side wall of collection container, and a group of pipes are communicated in the standpipe in the bottom of collection container;Drive device is used to drive collection container to rotate;Residue storage bin upper end is communicated with the bottom of jar body and lower end is open, and a group of retaining rings are coaxially arranged in the lower end of residue storage bin, and a group of grooves are recessed in the upper end wall surface of retaining ring;Plug valve upper plug and lower plug can alternately seal residue storage bin;The vertical flow type sedimentation tank of the present application can conveniently realize the separation of float, sludge and water in jar, improve the working efficiency of the whole sewage treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a vertical flow sedimentation tank and wastewater treatment equipment. Background Technology

[0002] Wastewater treatment equipment often integrates structures such as physicochemical tanks, membrane tanks, deep-water tanks, and sedimentation tanks. Wastewater passes through these tanks and structures in sequence to achieve sludge removal and purification. Among them, sedimentation tanks are mostly vertical flow sedimentation tanks with a high degree of integration. They take advantage of the fact that particulate matter is easy to settle in liquids to achieve sludge settling and clear water overflowing and being discharged. Only the sludge at the bottom of the sedimentation tank needs to be cleaned periodically.

[0003] In practice, as sewage is poured into the sedimentation tank from top to bottom, a lot of foam carrying impurities will be formed in the sedimentation tank. The foam is suspended on the surface of the water in the sedimentation tank and is more likely to overflow along the triangular weir with the treated water, affecting the sewage treatment effect. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vertical flow sedimentation tank and sewage treatment equipment.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] On one hand, the present invention provides a vertical flow sedimentation tank, comprising:

[0007] The tank has an open top and a set of vertical pipes in the center of the tank. There is a gap between the lower end of the vertical pipes and the bottom of the tank. The side wall of the vertical pipes is connected to the liquid inlet pipe.

[0008] The collection container is rotatably connected to the top of the vertical pipe. The side wall of the collection container is provided with a notch and multiple scrapers to scrape off the foam on the surface of the liquid in the tank and guide it into the collection container along the notch. The bottom of the collection container is connected to a set of conduits that pass through the vertical pipe.

[0009] A drive unit, which is connected to the collection container, is used to drive the rotation of the collection container;

[0010] The slag storage bin has its upper end connected to the bottom of the tank and its lower end open. A set of retaining rings is coaxially installed at the lower end of the slag storage bin, and a set of grooves is recessed on the upper wall surface of the retaining rings; and

[0011] The plug valve, installed inside the slag storage bin, includes an upper plug and a lower plug connected by a connecting rod. The lower end of the lower plug is equipped with a set of limiting rods that abut against the upper wall of the retaining ring. The lower end of the guide tube passes through the upper plug and the lower plug in sequence to drive the rotation of the plug valve. The limiting rods contact the upper wall and the groove of the retaining ring in sequence, so that the upper plug and the lower plug alternately seal the slag storage bin.

[0012] Furthermore, the catheter is a telescopic tube, which includes multiple tube sections that are connected in a telescopic manner, and the tube section at the lowermost end of the catheter is fixedly connected to the lower plug.

[0013] Furthermore, the notch and scraper of the collection container are both higher than the liquid level inside the tank, and the front end of the scraper is inclined downward and has a guide plate that contacts the liquid level inside the tank; a set of first gears extending into the collection container are also fixedly connected to the top of the vertical pipe, and multiple second gears that mesh with the first gears are rotatably installed inside the collection container.

[0014] Each set of scrapers is equipped with a conveyor belt along its length, and several scraper blades are evenly distributed on the outer surface of the conveyor belt to guide the foam into the gap. All second gears are connected to a set of conveyor belts for drive.

[0015] Furthermore, the bottom of the tank is funnel-shaped, and the vertical pipe and slag storage bin are both located on the central axis of the tank.

[0016] Furthermore, the slag storage bin is cylindrical, with its upper end connected to the center of the bottom of the tank, and its lower end connected to a slag discharge pipe; the inner diameter of the slag discharge pipe is larger than the inner diameter of the slag storage bin, and a retaining ring is installed in the slag discharge pipe.

[0017] Furthermore, a tension spring is provided between the lower plug and the slag discharge pipe to ensure that the limiting rod is pressed tightly against the retaining ring.

[0018] Furthermore, on the conveyor belt surface facing the direction of rotation of the collection container, the included angle between each set of scrapers and the conveyor belt surface is towards the collection container side.

[0019] Furthermore, the vertical pipe is fixed by multiple sets of brackets installed inside the tank.

[0020] Furthermore, a triangular weir is provided on the top periphery of the tank.

[0021] On the other hand, the present invention also provides a sewage treatment device, wherein the sewage treatment device is provided with a vertical flow sedimentation tank as described above.

[0022] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0023] In the vertical flow sedimentation tank of the present invention, sludge enters the sludge storage bin along the bottom of the tank. The foam on the liquid surface in the tank is collected by the scraper and the collection container and discharged along the guide pipe, while the sludge accumulates in the sludge storage bin at the bottom of the tank. At the same time, as the collection container rotates, the plug valve is driven to rotate through the guide pipe, and with the support of the limit rod and the retaining ring, the sludge storage bin can be automatically discharged once for every rotation of the collection container.

[0024] Therefore, the vertical flow sedimentation tank of the present invention can easily separate foam, sludge and water in the tank, thereby improving the working efficiency of the entire sewage treatment equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the vertical flow sedimentation tank of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0027] Figure 3 This is a top view of the vertical flow sedimentation tank of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of part B in the image;

[0029] Icons: 1-Tank body, 10-Gap, 11-Support, 12-Triangular weir, 13-Slag storage bin, 14-Slag discharge pipe, 141-Tension spring, 15-Retaining ring, 150-Groove, 2-Vertical pipe, 20-Liquid inlet pipe, 3-Collection container, 30-Notch, 31-Conduit pipe, 32-Drive device, 33-First gear, 34-Second gear, 4-Scraper, 40-Guide plate, 41-Baffle, 42-Conveyor belt, 420-Scraper blade, 5-Plug valve, 50-Upper plug head, 51-Lower plug head, 510-Limiting rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Example 1:

[0032] This embodiment provides a vertical flow sedimentation tank, including a tank body 1, a vertical pipe 2, a collection container 3, a scraper 4, and a plug valve 5.

[0033] The tank 1 has an open top and a funnel-shaped bottom. The vertical pipe 2 stands inside the tank 1 and is fixed to the inner wall of the tank 1 by multiple sets of brackets 11. A triangular weir 12 for drainage is provided on the top periphery of the tank 1. The upper end of the vertical pipe 2 is flush with the triangular weir 12 on the tank 1. A gap 10 is left between the lower end of the vertical pipe 2 and the bottom of the tank 1. The side wall of the vertical pipe 2 is connected to an inlet pipe 20, which extends to the outside of the tank 1. The inlet pipe 20 guides the sewage into the vertical pipe 2. The sewage flows out along the lower end of the vertical pipe 2, the sludge sinks, and the water enters the tank 1 outside the vertical pipe 2 through the gap 10 and finally overflows along the triangular weir 12.

[0034] The slag storage bin 13 is cylindrical, with its upper end connected to the center of the bottom of the tank body 1. The lower end of the slag storage bin 13 is open, and the lower end of the slag storage bin 13 is connected to a slag discharge pipe 14. The inner diameter of the slag discharge pipe 14 is larger than the inner diameter of the slag storage bin 13. A set of retaining rings 15 are welded inside the slag discharge pipe 14 through a bracket. The retaining rings 15 are coaxially arranged with the slag storage bin 13.

[0035] Reference Figure 3 A set of grooves 150 is also provided on the upper wall of the retaining ring 15.

[0036] Reference Figure 1 The vertical pipe 2 and the slag storage bin 13 are both located on the central axis of the tank body 1.

[0037] Reference Figure 1 and Figure 4 The collection container 3 is rotatably connected to the top of the vertical pipe 2. A driving device 32 is installed on the top of the vertical pipe 2. The driving device 32 is used to drive the collection container 3 to rotate. Therefore, the driving device 32 can be a motor. In this embodiment, the side wall of the collection container 3 is provided with three sets of notches 30 and three sets of scrapers 4. The scrapers 4 are used to scrape off the foam on the surface of the liquid in the tank 1. The notches 30 can guide the foam into the collection container 3. The bottom of the collection container 3 is connected to a set of conduits 31. The conduits 31 extend along the lower end of the tank 1 to the outside of the tank 1, so that the foam can be discharged.

[0038] In this embodiment, the conduit 31 is a telescopic tube, which includes multiple tube sections that are connected in a telescopic manner and can slide between the tube sections.

[0039] Reference Figure 4 Specifically, the notch 30 of the collection container 3 and the scraper 4 are both higher than the liquid level in the tank 1. The scraper 4 rotates clockwise. A set of guide plates 40 is set at the front end of the scraper 4 at a downward angle. The higher side of the guide plate 40 is smoothly connected to the scraper 4, and the lower side of the guide plate 40 is in contact with the liquid level in the tank 1. When the scraper 4 rotates, the foam on the liquid surface can be scooped into the scraper 4.

[0040] In addition, a set of first gears 33 extending into the collection container 3 are fixedly connected to the top of the vertical tube 2. That is, a set of support rods (not shown) are installed at the upper end of the vertical tube 2. The support rods pass through the collection container 3. The first gears 33 are fixedly installed on the support rods. The top of the support rods is equipped with a drive device 32. The output end of the drive device 32 is connected to the collection container 3 through a belt. Under the drive of the drive device 32, the collection container 3 can rotate along the support rods.

[0041] Reference Figure 4 The collection container 3 is rotatably equipped with three second gears 34 that mesh with the first gear 33. During the rotation of the collection container 3 around the first gear 33, the three second gears 34 can rotate on their own axis.

[0042] Reference Figure 4 Each set of scrapers 4 is provided with a conveyor belt 42 along its length. Several scraper blades 420 are evenly provided on the outer surface of the conveyor belt 42 to guide the foam into the notch 30. Three sets of second gears 34 are connected to the three sets of conveyor belts 42 in a one-to-one driving manner. In addition, on the surface of the conveyor belt 42 facing the rotation direction (clockwise) of the collection container 3, the included angle between each set of scraper blades 420 and the surface of the conveyor belt 42 is towards the collection container 3. This can transport the foam shoveled onto the scraper 4 to the notch 30 and finally flow into the collection container 3.

[0043] Reference Figure 1 and Figure 3 The plug valve 5 is installed inside the slag storage bin 13. The plug valve 5 includes an upper plug head 50 and a lower plug head 51 connected by a connecting rod. A set of limiting rods 510 that abut against the upper wall of the retaining ring 15 are installed at the lower end of the lower plug head 51. The lower end of the guide tube 31 passes through the upper plug head 50 and the lower plug head 51 in sequence. The lowermost section of the guide tube 31 is fixedly connected to the lower plug head 51. During the rotation of the collection container 3, the guide tube 31 can be driven to rotate, and the guide tube 31 can drive the rotation of the plug valve 5.

[0044] In its natural state, the plug valve 5 falls under its own weight, causing the upper plug head 50 to seal the upper end of the slag storage bin 13, while the lower plug head 51 slides out from the lower end of the slag storage bin 13. Due to the setting of the limit rod 510, during the rotation of the plug valve 5, the limit rod 510 contacts the upper wall of the retaining ring 15 in sequence. At this time, the upper plug head 50 is higher than the upper opening of the slag storage bin 13, and sludge enters the slag storage bin 13. The lower end of the slag storage bin 13 is sealed by the lower plug head 51. When the lower end of the limit rod 510 slides into the groove 150, the plug valve 5 moves down, causing the upper plug head 50 to slide down and seal the upper end of the slag storage bin 13, and the lower plug head 51 slides down and opens the lower end of the slag storage bin 13, allowing the sludge to be discharged.

[0045] The groove 150 is smoothly connected to the upper wall of the retaining ring 15, allowing the limiting rod 510 to slide smoothly into / out of the groove 150. In addition, a tension spring 141 can be provided between the lower plug head 51 and the slag discharge pipe 14 so that the limiting rod 510 is tightly pressed against the retaining ring 15.

[0046] With the above setup, the slag storage bin 13 can discharge slag once for each rotation of the collection container 3 and scraper 4, and at the same time, the foam and sludge can be discharged. After the foam and sludge are discharged, they can be dried and dehydrated before being landfilled or incinerated.

[0047] Example 2:

[0048] This embodiment provides a wastewater treatment device, which includes the vertical flow sedimentation tank as described in Embodiment 1.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vertical flow sedimentation tank, characterized in that, include: The tank has an open top and a set of vertical pipes in the center of the tank. There is a gap between the lower end of the vertical pipes and the bottom of the tank. The side wall of the vertical pipes is connected to the liquid inlet pipe. The bottom of the tank is funnel-shaped. The vertical pipes and the slag storage bin are both located on the central axis of the tank. A collection container is rotatably connected to the top of the vertical pipe. The side wall of the collection container is provided with a notch and multiple scrapers to scrape off the foam on the surface of the liquid in the tank and guide it into the collection container along the notch. The bottom of the collection container is connected to a set of conduits that pass through the vertical pipe. The conduits are telescopic pipes, which include multiple pipe sections that are connected in sequence to telescopically extend. A drive unit, which is connected to the collection container, is used to drive the rotation of the collection container; A slag storage bin, its upper end connected to the bottom of the tank and its lower end open, has a set of retaining rings coaxially arranged at the lower end of the bin, with a set of grooves on the upper wall of the retaining rings. The slag storage bin is cylindrical, its upper end connected to the center of the bottom of the tank, and its lower end connected to a slag discharge pipe; the inner diameter of the slag discharge pipe is larger than the inner diameter of the slag storage bin, and the retaining rings are disposed within the slag discharge pipe; and A plug valve, installed inside a slag storage silo, includes an upper plug and a lower plug connected by a connecting rod. A set of limiting rods is installed at the lower end of the lower plug, which abuts against the upper wall of a retaining ring. The lower end of a guide tube passes through the upper and lower plugs in sequence to drive the rotation of the plug valve. The limiting rods contact the upper wall and groove of the retaining ring in sequence, so that the upper and lower plugs alternately seal the slag storage silo. The lowermost section of the guide tube is fixedly connected to the lower plug. A tension spring is provided between the lower plug and the slag discharge pipe to keep the limiting rods tightly against the retaining ring. With the above setup, the slag bin will discharge slag once for each rotation of the collection container and scraper.

2. The vertical flow sedimentation tank according to claim 1, characterized in that, The notch and scraper of the collection container are both higher than the liquid level inside the tank. The front end of the scraper is inclined downward and has a guide plate that contacts the liquid level inside the tank. A set of first gears extending into the collection container is also fixedly connected to the top of the vertical pipe. Multiple second gears that mesh with the first gears are rotatably installed inside the collection container. Each set of scrapers is equipped with a conveyor belt along its length, and several scraper blades are evenly distributed on the outer surface of the conveyor belt to guide the foam into the gap. All second gears are connected to a set of conveyor belts for drive.

3. The vertical flow sedimentation tank according to claim 2, characterized in that, On the conveyor belt surface facing the direction of rotation of the collection container, the angle between each set of scrapers and the conveyor belt surface is towards the collection container.

4. The vertical flow sedimentation tank according to claim 1, characterized in that, The vertical pipe is fixed by multiple sets of brackets installed inside the tank.

5. The vertical flow sedimentation tank according to claim 1, characterized in that, A triangular weir is provided on the top periphery of the tank.

6. A wastewater treatment device, characterized in that, The wastewater treatment equipment is equipped with a vertical flow sedimentation tank as described in any one of claims 1 to 5.

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