Defoaming and skimming device for radial-flow secondary sedimentation tank

Abstract

The utility model discloses a radial-flow type secondary sedimentation tank defoaming and skimming device which comprises a sewage tank, a central buttress is fixedly connected to the bottom of an inner cavity of the sewage tank, a rotary working bridge is installed on the top of the central buttress, and a slag scraping baffle is connected to the bottom of the rotary working bridge through bolts. The top of the rotary working bridge is connected with a fixed water pipe through bolts, the surface of the fixed water pipe fixedly communicates with a fan-shaped spray head, the bottom of the fixed water pipe is fixedly connected with a mounting mechanism, a mounting sliding plate is inserted into the bottom of the mounting mechanism, and the bottom of the mounting sliding plate is connected with a flow guide buoy through bolts. Mounting shells are fixedly connected to the left side and the right side of the bottom of the fixed water pipe. According to the defoaming and skimming device for the radial-flow secondary sedimentation tank, provided by the utility model, the skimming efficiency can be improved, defoaming can be carried out while skimming is carried out, floating objects are cleaned more thoroughly, and the labor intensity of personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a defoaming and scum skimming device for a radial secondary sedimentation tank. Background Art

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it. A large amount of biological foam often appears on the surface of the secondary sedimentation tank in a sewage treatment plant, which is difficult to eliminate for a while, affecting the appearance of the plant; when the temperature rises, the floating algae such as duckweed are likely to multiply explosively in the illuminated water body. If not cleaned in time, it will affect the effluent quality.

[0003] At present, the cleaning of scum on the pool surface mainly relies on a slag scraping plate. Generally, a radial secondary sedimentation tank is an open structure with a large diameter. The rotation speed of the slag scraping plate is generally 1 - 3 r / h, and the peripheral linear speed does not exceed 3 m / min, usually 1.5 m / min. Therefore, the following problems are likely to occur during the operation of the secondary sedimentation tank: (1) The slag scraping speed is slow, and it is difficult to collect and clean the floating objects well; (2) Manual fishing is time-consuming and laborious, with poor results, and there are safety hazards. At the same time, the disassembly and assembly of the components of the slag scraping equipment are not fast enough, resulting in a low component replacement efficiency.

[0004] The above problems are manifested as low slag scraping efficiency, unsatisfactory collection and cleaning of floating objects, large labor intensity of personnel fishing operations, and low component disassembly, assembly and replacement efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to propose a defoaming and scum skimming device for a radial secondary sedimentation tank in view of the deficiencies of the prior art, so as to solve the problems of low slag scraping efficiency, unsatisfactory cleaning of floating objects, increased labor intensity of personnel, and low component disassembly, assembly and replacement efficiency during the operation of the existing secondary sedimentation tank.

[0006] The technical purpose of the utility model is achieved through the following technical solutions:

[0007] A defoaming and scum skimming device for a radial secondary sedimentation tank includes a sewage tank. A central pier is fixedly connected to the bottom of the inner cavity of the sewage tank. A rotating working bridge is installed on the top of the central pier. A slag scraping baffle is connected to the bottom of the rotating working bridge by bolts. A fixed water pipe is connected to the top of the rotating working bridge by bolts. A sector-shaped nozzle is fixedly communicated with the surface of the fixed water pipe. An installation mechanism is fixedly connected to the bottom of the fixed water pipe. An installation slide plate is inserted into the bottom of the installation mechanism. A diversion floating cylinder is connected to the bottom of the installation slide plate by bolts. Installation shells are fixedly connected to the left and right sides of the bottom of the fixed water pipe. An installation seat is inserted into the bottom of the installation shell. A support roller is connected to the bottom of the left installation seat by bolts. A support rod is fixedly connected to the left side of the surface of the fixed water pipe. A water pump is fixedly connected to the left side of the top of the central pier.

[0008] Preferably, the installation mechanism includes a fixed vertical plate. Plugging grooves are formed on both the front and rear sides of the bottom of the fixed vertical plate. Connection sliding plates are slidably connected to both the front and rear sides inside the fixed vertical plate. A positioning plate is fixedly connected to the outer side of the connection sliding plate, and a positioning spring is fixedly connected between the front and rear connection sliding plates.

[0009] Preferably, the outer side of the positioning plate penetrates to the outer side of the fixed vertical plate. Sliding openings are formed on both the left and right sides inside the fixed vertical plate. Push plates are fixedly connected to both the left and right sides of the connection sliding plate, and the outer sides of the push plates penetrate to the outer sides of the sliding openings.

[0010] Preferably, a water outlet groove and a water inlet groove are respectively formed on the top of the sewage tank. A slag discharge well is fixedly connected to the top of the outer surface of the sewage tank.

[0011] Preferably, a slag discharge hopper is fixedly connected to the top inside the sewage tank, and a floating slag baffle is fixedly connected to the inner wall of the sewage tank.

[0012] Preferably, a water outlet is formed on the left side inside the water outlet groove, and the water outlet pipe of the water pump is communicated with the fixed water pipe.

[0013] Preferably, the side of the support rod away from the fixed water pipe is fixedly connected to the rotating working bridge. Positioning holes are formed on the surface of the installation sliding plate, and a positioning bolt is threadedly connected through the outer side of the installation shell.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a defoaming and scum skimming device for a radial flow secondary sedimentation tank. The device can improve the slag scraping efficiency, defoam while skimming the scum, clean the floating objects more thoroughly, and reduce the labor intensity of personnel.

[0016] The device can quickly disassemble and assemble components, is more time-saving and labor-saving in operation, improves the replacement efficiency of components, and has better practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric view of the structure of the utility model;

[0018] Figure 2 is an axonometric view of a partial structure of the utility model;

[0019] Figure 3 is a bottom-up sectional axonometric view of the installation mechanism of the utility model;

[0020] Figure 4 is an axonometric view of the diversion floating cylinder of the utility model;

[0021] Figure 5 For the utility modelFigure 2 Enlarged view of A.

[0022] In the above-mentioned drawings: 1. sewage tank; 2. central pier; 3. water pump; 4. fixed water pipe; 5. sector nozzle; 6. guiding floating drum; 7. rotating working bridge; 8. slag scraping baffle; 9. support rod; 10. water outlet; 11. support roller; 12. water outlet trough; 13. slag discharge well; 14. slag discharge hopper; 15. water inlet trough; 16. scum baffle; 17. installation mechanism; 18. installation shell; 19. installation seat; 20. fixed vertical plate; 21. positioning plate; 22. connecting slide plate; 23. positioning spring; 24. insertion slot; 25. positioning hole; 26. installation slide plate; 27. positioning bolt. Specific embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] As a preferred embodiment of the present invention, as Figures 1 - 5 shown, this embodiment provides a defoaming and scum skimming device for a radial secondary sedimentation tank, including a sewage tank 1. A central pier 2 is fixedly connected to the bottom of the inner cavity of the sewage tank 1. A rotating working bridge 7 is installed on the top of the central pier 2. A slag scraping baffle 8 is bolted to the bottom of the rotating working bridge 7. A fixed water pipe 4 is bolted to the top of the rotating working bridge 7. A sector nozzle 5 is fixedly communicated with the surface of the fixed water pipe 4. An installation mechanism 17 is fixedly connected to the bottom of the fixed water pipe 4. An installation slide plate 26 is inserted into the bottom of the installation mechanism 17. A guiding floating drum 6 is bolted to the bottom of the installation slide plate 26. Installation shells 18 are fixedly connected to both the left and right sides of the bottom of the fixed water pipe 4. Installation seats 19 are inserted into the bottoms of the installation shells 18. A support roller 11 is bolted to the bottom of the left installation seat 19. A support rod 9 is fixedly connected to the left side of the surface of the fixed water pipe 4. A water pump 3 is fixedly connected to the left side of the top of the central pier 2.

[0025] When the above-mentioned embodiment is implemented, the water pump 3 is installed on the top of the central pier 2, the water inlet pipe of the water pump 3 sinks into the interior of the sewage tank 1, after the water pump 3 works, the supernatant is sucked from the secondary sedimentation tank and conveyed into the fixed water pipe 4, and then sprayed out through the sector-shaped nozzle 5 on the surface of the central pier 2. Through spraying, the biological foam on the sewage surface can be eliminated, and at the same time, it helps to collect the floating objects on the collection tank surface to the slag scraping baffle 8. The rotating working bridge 7 can drive the slag scraping baffle 8 to rotate clockwise to scrape the sewage surface. The slag scraping baffle 8 pushes the fixed water pipe 4 to rotate clockwise through the support rod 9 and is always located on the front side of the slag scraping baffle 8 to eliminate foam. The diversion floating cylinder 6 at the bottom of the fixed water pipe 4 can support the fixed water pipe 4 and play a role in diverting the floating objects at the same time. The support rollers 11 can cooperate to support the fixed water pipe 4 and make its rotation more convenient.

[0026] In some embodiments, as Figure 3 shown, the installation mechanism 17 includes a fixed vertical plate 20. Plug-in slots 24 are opened on the front and rear sides of the bottom of the fixed vertical plate 20. Connecting slide plates 22 are slidably connected to the front and rear sides of the inner cavity of the fixed vertical plate 20. A positioning plate 21 is fixedly connected to the outer side of the connecting slide plate 22. A positioning spring 23 is fixedly connected between the front and rear connecting slide plates 22. The outer side of the positioning plate 21 penetrates to the outside of the fixed vertical plate 20. Sliding openings are opened on the left and right sides of the inner cavity of the fixed vertical plate 20. Push plates are fixedly connected to the left and right sides of the connecting slide plate 22. The outer sides of the push plates penetrate to the outside of the sliding openings.

[0027] In this embodiment, in order to facilitate the disassembly, installation and replacement of the diversion floating cylinder 6, when the diversion floating cylinder 6 needs to be replaced after long-term use, the push plates on both sides are pushed simultaneously, and the connecting slide plates 22 on the front and rear sides move relatively. The middle positioning spring 23 is in a compressed state. At this time, the diversion floating cylinder 6 is pulled downward, and the installation slide plate 26 moves out of the plug-in slot 24 accordingly. Then, the operator takes a new diversion floating cylinder 6 and inserts the installation slide plate 26 at the top into the plug-in slot 24. After inserting to an appropriate length, the push plates are released, and the compressed positioning spring 23 releases its elastic force to push the positioning plates 21 on both sides into the positioning holes 25 to position the new diversion floating cylinder 6. In this way, the disassembly and installation operation is more time-saving and labor-saving, the replacement efficiency of the diversion floating cylinder 6 is higher, and at the same time, the use height of the diversion floating cylinder 6 can be adjusted.

[0028] In some embodiments, as Figure 1 、 Figure 4 and Figure 5As shown in the figure, a water outlet groove 12 and a water inlet groove 15 are respectively opened at the top of the sewage tank 1. A slag discharge well 13 is fixedly connected to the top of the outer surface of the sewage tank 1. A slag discharge hopper 14 is fixedly connected to the top of the inner cavity of the sewage tank 1. A floating slag baffle 16 is fixedly connected to the inner wall of the sewage tank 1. A water outlet 10 is opened on the left side of the inner cavity of the water outlet groove 12. The water outlet pipe of the water pump 3 is communicated with the fixed water pipe 4. One side of the support rod 9 far away from the fixed water pipe 4 is fixedly connected to the rotating working bridge 7. A positioning hole 25 is opened on the surface of the installation slide plate 26. A positioning bolt 27 is threadedly connected through the outside of the installation shell 18.

[0029] In this embodiment, the slag discharge hopper 14 can enable floating objects to flow from the sewage tank 1 into the slag discharge well 13 for collection. The water outlet groove 12 can enable the defoamed and scum-removed sewage to flow out of the sewage tank 1, and the water inlet groove 15 enables the untreated sewage to flow into the sewage tank 1. After loosening the positioning bolts 27 on the surfaces of the two installation shells 18, the installation seat 19 can be pulled down. When it is pulled down to an appropriate length, then tighten the positioning bolts 27 to fix the installation seat 19. In this way, the support height of the support roller 11 can be adjusted according to the actual use situation, improving the practicability.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A radial flow secondary sedimentation tank defoaming and slag skimming device, comprising a sewage tank (1), characterized in that: The bottom of the inner cavity of the sewage pool (1) is fixedly connected to a central pier (2), the top of the central pier (2) is installed with a rotating working bridge (7), the bottom of the rotating working bridge (7) is connected to a scraper baffle (8) by bolts, the top of the rotating working bridge (7) is connected to a fixed water pipe (4) by bolts, the surface of the fixed water pipe (4) is fixedly connected to a fan-shaped nozzle (5), the bottom of the fixed water pipe (4) is fixedly connected to a mounting mechanism (17), the bottom of the mounting mechanism (17) is plugged with a mounting slide (26), the bottom of the mounting slide (26) is connected to a guide buoy (6) by bolts, the left and right sides of the bottom of the fixed water pipe (4) are fixedly connected to a mounting shell (18), the bottom of the mounting shell (18) is plugged with a mounting seat (19), the bottom of the left mounting seat (19) is connected to a supporting roller (11) by bolts, the left side of the surface of the fixed water pipe (4) is fixedly connected to a support rod (9), and the left side of the top of the central pier (2) is fixedly connected to a water pump (3).

2. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 1, characterized in that: The mounting mechanism (17) comprises a fixed vertical plate (20), the front and rear sides of the bottom of the fixed vertical plate (20) are provided with plug-in slots (24), the front and rear sides of the inner cavity of the fixed vertical plate (20) are slidably connected with connecting slides (22), the outer side of the connecting slide (22) is fixedly connected with a positioning plate (21), and a positioning spring (23) is fixedly connected between the front and rear connecting slides (22).

3. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 2, characterized in that: The outer side of the positioning plate (21) penetrates to the outer side of the fixed vertical plate (20), and sliding openings are provided on both the left and right sides of the inner cavity of the fixed vertical plate (20). Push plates are fixedly connected to the left and right sides of the connecting slide plate (22), and the outer side of the push plates penetrates to the outer side of the sliding opening.

4. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 1, characterized in that: A water outlet trough (12) and a water inlet trough (15) are respectively provided on the top of the sewage pool (1), and a slag discharge well (13) is fixedly connected to the top of the outer surface of the sewage pool (1).

5. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 1, characterized in that: A slag discharge bucket (14) is fixedly connected to the top of the inner cavity of the sewage pool (1), and a slag baffle (16) is fixedly connected to the inner wall of the sewage pool (1).

6. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 4, characterized in that: A water outlet (10) is provided on the left side of the inner cavity of the water outlet trough (12), and the water outlet pipe of the water pump (3) is connected to the fixed water pipe (4).

7. A radial flow type secondary sedimentation tank defoaming and slag skimming device according to claim 1, characterized in that: The side of the support rod (9) away from the fixed water pipe (4) is fixedly connected to the rotating working bridge (7), a positioning hole (25) is provided on the surface of the mounting slide plate (26), and a positioning bolt (27) is threadedly connected to the outer side of the mounting shell (18).

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