A municipal sewage sedimentation tank with enhanced filtering effect

Abstract

The utility model discloses a municipal sewage sedimentation tank of enhanced filtration effect, including the sedimentation tank mechanism, including fixedly connected sedimentation tank body and overflow pool edge, both ends with overflow pool edge fixedly connected fixed plate, top with fixed plate welded water outlet pipeline, the water inlet pipe of penetrating sedimentation tank body, sewage blocking subassembly, including vertical fixed plate's cross arm, the connecting rod and connecting plate of welding connection, welding connection's blocking ring plate and cone cover, with the sedimentation ring of cone cover surface through bolt fixed, with the flow guide cover of blocking ring plate through bolt fixed, welding connection's first blocking ring and second blocking ring, through the design sewage blocking subassembly, the flow guide cover and first blocking ring and second blocking ring hinder sewage rising speed, and sewage rises along the sedimentation ring of the ladder shape of the diameter from small to big, and the sedimentation ring caliber becomes big, and sewage rising speed slows down, and it is beneficial to the suspended matter of sewage in the sedimentation tank body and fully deposits, and the effect of suspended matter deposition separation in sewage is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of municipal sewage treatment technology, specifically relating to a municipal sewage sedimentation tank with enhanced filtration effect. Background Technology

[0002] In municipal wastewater treatment, the wastewater needs to be filtered. Vertical flow wastewater sedimentation tanks are a primary treatment facility used for municipal wastewater filtration. The principle is that municipal wastewater flows into the wastewater sedimentation tank through the inlet pipe. Suspended solids and impurities in the wastewater gradually settle under the action of gravity. After a period of sedimentation, the clarified wastewater flows out through the outlet pipe, while the settled sludge is discharged in conjunction with the sludge discharge equipment and sludge discharge pipe, thereby achieving the purpose of solid-liquid separation in wastewater treatment.

[0003] When vertical flow sewage sedimentation tanks are used to treat municipal sewage, if the sewage inflow rate is too fast, the sewage will rise rapidly along the tank wall, causing impurities in the sewage to overflow directly without sufficient sedimentation. The sewage sedimentation tank does not have a design to obstruct the sewage and reduce the sewage's rising speed, so the sewage in the sedimentation tank cannot be fully settled, separated, and filtered. This is a shortcoming that needs to be improved. Existing vertical flow sewage sedimentation tanks, when used for sedimentation, separation, and filtration of sewage impurities, suffer from the problem of lacking a design that obstructs the sewage and reduces its upward velocity. To address this, this application proposes a solution. Utility Model Content

[0004] The purpose of this invention is to provide a municipal sewage sedimentation tank that enhances filtration, thereby solving the problem in the background art where vertical flow sewage sedimentation tanks lack a design that obstructs sewage and reduces its upward velocity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a municipal sewage settling tank with enhanced filtration effect, comprising... The sedimentation tank structure includes a sedimentation tank body and an overflow tank side that are fixedly connected, a fixed plate that is fixedly connected to the overflow tank side at both ends, an outlet pipe that is welded to the fixed plate at the top, and an inlet pipe that penetrates the sedimentation tank body. The wastewater barrier assembly includes a horizontal arm of a vertically fixed plate, a welded connecting rod and a connecting plate, a welded barrier ring plate and a cone cover, a sedimentation ring fixed to the surface of the cone cover by bolts, a flow guide cover fixed to the barrier ring plate by bolts, and a first barrier ring and a second barrier ring welded together. The sinking assembly includes a fixing post that is bolted to the second blocking ring, a support ring and a blocking plate that are welded together.

[0006] Preferably, a filter screen is fixed inside the sedimentation tank, and a cone-shaped flow guide cone is fixed at the center of the filter screen, with a flow divider plate welded to the center of the flow guide cone.

[0007] Preferably, an inverted bowl-shaped mesh barrier is welded to the surface of the filter screen, and the top center of the barrier is an open structure.

[0008] Preferably, the cone cover is a hollow cone-shaped structure, and the sedimentation ring has a stepped cross-section.

[0009] Preferably, the shroud, the first blocking ring, and the second blocking ring are hollow conical structures, with the outer conical surface of the first blocking ring matching the inner conical surface of the shroud, and the outer conical surface of the second blocking ring matching the inner conical surface of the first blocking ring.

[0010] Preferably, the plane on which the bottom surface of the first blocking ring is located is the blocking water surface a, the plane on which the bottom surface of the second blocking ring is located is the blocking water surface b, and the stepped surfaces of the sedimentation ring are the overflow surface c and the overflow surface d, respectively.

[0011] Preferably, the barrier plate is in an inclined state, the inclined bottom end of the barrier plate is connected to the support ring, and the inclined top end of the barrier plate is flush with the overflow surface c.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the designed sewage blocking component, the guide hood and the first and second blocking rings hinder the upward speed of sewage. The sewage rises along the stepped sedimentation rings with increasing diameter. As the diameter of the sedimentation rings increases, the upward speed of the sewage slows down, which is conducive to the full sedimentation of suspended solids in the sedimentation tank and enhances the effect of sedimentation and separation of suspended solids in the sewage.

[0013] 2. In this utility model, through the designed sinking component, the barrier plate plays the role of blocking suspended solids in sewage. The suspended solids in sewage adhere to the surface of the inclined barrier plate, and under gravity, the suspended solids settle.

[0014] 3. In this utility model, the designed barrier net obstructs sewage and reduces the upward speed of sewage, and also filters suspended solids in sewage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the sedimentation tank body of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a top view of the air deflector structure of this utility model; Figure 5 This is a schematic diagram of the structure of this utility model; In the diagram: 3. Baffle ring plate; 4. Conical hood; 5. Sedimentation ring; 11. Sedimentation tank body; 12. Overflow tank edge; 13. Fixing plate; 14. Inlet pipe; 15. Outlet pipe; 21. Cross arm; 22. Connecting rod; 23. Connecting plate; 61. Flow guide hood; 62. First baffle ring; 63. Second baffle ring; 71. Filter screen; 72. Flow guide cone; 73. Diverting plate; 74. Barrier net; 81. Fixing column; 82. Support ring; 83. Barrier plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 5This utility model provides a technical solution: a municipal sewage sedimentation tank with enhanced filtration effect, comprising a sedimentation tank mechanism, including a sedimentation tank body 11 and an overflow tank edge 12 fixedly connected, a fixing plate 13 fixedly connected to the overflow tank edge 12 at both ends, an outlet pipe 15 welded to the fixing plate 13 at the top, and an inlet pipe 14 penetrating the sedimentation tank body 11. A drainage pipe is provided on the overflow tank edge 12, and the sewage discharge path is sequentially: inlet pipe 14, outlet pipe 15, sedimentation tank body 11, overflow tank edge 12, and drainage pipe. Wastewater slowly rises along the entire inner wall of the settling tank 11. Suspended solids and impurities in the wastewater settle into the conical sludge hopper of the settling tank 11 under gravity. Clarified water is discharged from the overflow edge 12 around the upper end of the tank. The wastewater barrier assembly includes a horizontal arm 21 of a vertical fixed plate 13, a welded connecting rod 22 and a connecting plate 23, a welded blocking ring plate 3 and a cone shroud 4, a sedimentation ring 5 fixed to the surface of the cone shroud 4 by bolts, a flow guide shroud 61 fixed to the blocking ring plate 3 by bolts, and a welded... The first and second blocking rings 62 and 63 are connected. When sewage rises slowly along the entire inner wall of the sedimentation tank 11, the inner conical surfaces of the guide hood 61, the first blocking ring 62 and the second blocking ring 63 are inclined, which hinders the rise of sewage and reduces the rising speed of sewage. After the sewage overflows the blocking ring plate 3, the sewage rises along the stepped sedimentation rings 5 ​​with increasing diameter. Sewage that rises too fast overflows the overflow surface c and flows to the inner wall of the sedimentation ring 5 with a large diameter, which slows down the rising speed of sewage and facilitates the full sedimentation of suspended solids in the sedimentation tank 11, enhancing the effect of sedimentation and separation of suspended solids in sewage. Impurities adhering to the sewage blocking components can be cleaned manually. The sedimentation component includes a fixed column 81 fixed to the second blocking ring 63 by bolts, a support ring 82 welded together and a blocking plate 83. The blocking plate 83 has the effect of blocking suspended solids in sewage. Suspended solids in sewage adhere to the inclined surface of the blocking plate 83. Under gravity, the suspended solids settle. Impurities adhering to the blocking plate 83 can be cleaned manually.

[0018] In this embodiment, a filter screen 71 is fixed inside the sedimentation tank 11, and a cone-shaped flow guide cone 72 is fixed at the center of the filter screen 71. A diversion plate 73 is welded at the center of the flow guide cone 72. The filter screen 71 filters suspended solids in the sewage, and the diversion plate 73 diverts the sewage.

[0019] In this embodiment, an inverted bowl-shaped mesh barrier 74 is welded to the surface of the filter screen 71. The center of the top surface of the barrier 74 is an open structure. The barrier 74 plays a certain role in obstructing the flow of sewage and can reduce the upward speed of sewage. The barrier 74 also filters suspended solids in the sewage.

[0020] In this embodiment, the cone cover 4 is a hollow cone-shaped structure, and the sedimentation ring 5 has a stepped cross-section. The sewage rises along the stepped sedimentation ring 5 with an increasing diameter, and the sedimentation ring 5 slows down the rising speed of the sewage.

[0021] In this embodiment, the flow guide 61, the first blocking ring 62, and the second blocking ring 63 are hollow conical structures. The outer conical surface of the first blocking ring 62 matches the inner conical surface of the flow guide 61, and the outer conical surface of the second blocking ring 63 matches the inner conical surface of the first blocking ring 62. The inner conical surfaces of the flow guide 61, the first blocking ring 62, and the second blocking ring 63 are inclined, which plays a role in hindering the rise of sewage and reducing the rising speed of sewage.

[0022] In this embodiment, the plane where the bottom surface of the first blocking ring 62 is located is the blocking water surface a, and the plane where the bottom surface of the second blocking ring 63 is located is the blocking water surface b. The stepped surfaces of the sedimentation ring 5 are the overflow surface c and the overflow surface d, respectively. The blocking plate 83 is in an inclined state. The inclined bottom end of the blocking plate 83 is connected to the support ring 82, and the inclined top end of the blocking plate 83 is flush with the overflow surface c. After the sewage overflows the blocking ring plate 3, the sewage rises along the stepped sedimentation ring 5 with the diameter increasing from small to large. The sewage that rises too fast overflows the overflow surface c and flows to the inner wall of the sedimentation ring 5 with the larger diameter, which slows down the rising speed of the sewage and facilitates the full sedimentation of suspended solids in the sedimentation tank 11, thereby enhancing the effect of sedimentation and separation of suspended solids in the sewage.

[0023] Working principle and usage process of this utility model: The sewage discharge path is as follows: inlet pipe 14, outlet pipe 15, sedimentation tank 11, overflow tank side 12 and drainage pipe. The sewage rises slowly along the entire inner wall of the sedimentation tank 11. The suspended solids and impurities in the sewage settle into the conical sludge hopper of the sedimentation tank 11 under the action of gravity. The clarified water is discharged from the overflow tank side 12 around the upper end of the tank. Filter screen 71 filters suspended solids in sewage, diversion plate 73 diverts sewage, and barrier screen 74 plays a certain role in obstructing the flow of sewage and can reduce the upward speed of sewage. Barrier screen 74 also filters suspended solids in sewage. The inner conical surfaces of the flow guide 61, the first blocking ring 62, and the second blocking ring 63 are inclined, which hinders the rise of sewage and reduces the rising speed of sewage. The barrier plate 83 serves to block suspended solids in sewage. The suspended solids in sewage adhere to the surface of the inclined barrier plate 83. Under gravity, the suspended solids settle. The impurities adhering to the barrier plate 83 can be cleaned manually. After the sewage overflows the baffle ring 3, the sewage rises along the stepped sedimentation ring 5 with increasing diameter. The rapidly rising sewage overflows the overflow surface c and flows towards the inner wall of the large-diameter sedimentation ring 5, slowing down the rising speed of the sewage and facilitating the full sedimentation of suspended solids in the sedimentation tank 11, thereby enhancing the effect of sedimentation and separation of suspended solids in the sewage. In summary: The vertical flow sewage sedimentation tank of this application has a blocking design that obstructs sewage and reduces the upward velocity of sewage. The blocking net 74 obstructs sewage and reduces the upward velocity of sewage. The blocking net 74 also filters suspended solids in sewage. The guide hood 61, the first blocking ring 62, and the second blocking ring 63 obstruct the upward velocity of sewage. Sewage rises along the stepped sedimentation rings 5 ​​with increasing diameter. As the diameter of the sedimentation rings 5 ​​increases, the upward velocity of sewage slows down, which is conducive to the full sedimentation of suspended solids in the sedimentation tank 11 and enhances the effect of sedimentation and separation of suspended solids in sewage.

[0024] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A municipal wastewater settling tank with enhanced filtration effect, characterized in that: include The sedimentation tank structure includes a sedimentation tank body (11) and an overflow tank edge (12) that are fixedly connected, a fixed plate (13) that is fixedly connected to the overflow tank edge (12) at both ends, an outlet pipe (15) that is welded to the fixed plate (13) at the top, and an inlet pipe (14) that penetrates the sedimentation tank body (11). The wastewater barrier assembly includes a horizontal arm (21) of a vertical fixed plate (13), a welded connecting rod (22) and a connecting plate (23), a welded blocking ring plate (3) and a cone (4), a sedimentation ring (5) fixed to the surface of the cone (4) by bolts, a flow guide (61) fixed to the blocking ring plate (3) by bolts, and a first blocking ring (62) and a second blocking ring (63) welded together. The sinking assembly includes a fixing post (81) bolted to the second blocking ring (63), a support ring (82) welded together, and a blocking plate (83).

2. A municipal sewage settling tank with enhanced filtration effect according to claim 1, characterized in that: The sedimentation tank (11) is equipped with a filter screen (71) inside. A cone-shaped flow guide cone (72) is fixed at the center of the filter screen (71), and a flow divider plate (73) is welded to the center of the flow guide cone (72).

3. A municipal sewage settling tank with enhanced filtration effect according to claim 2, characterized in that: The filter screen (71) has an inverted bowl-shaped mesh barrier (74) welded to its surface, and the top center of the barrier (74) has an open structure.

4. A municipal sewage settling tank with enhanced filtration effect according to claim 1, characterized in that: The cone cover (4) is a hollow cone structure, and the sedimentation ring (5) has a stepped cross-section.

5. A municipal sewage settling tank with enhanced filtration effect according to claim 1, characterized in that: The flow guide (61), the first blocking ring (62), and the second blocking ring (63) are hollow conical structures. The outer conical surface of the first blocking ring (62) matches the inner conical surface of the flow guide (61), and the outer conical surface of the second blocking ring (63) matches the inner conical surface of the first blocking ring (62).

6. A municipal sewage settling tank with enhanced filtration effect according to claim 1, characterized in that: The bottom surface of the first blocking ring (62) is located on the plane of blocking water surface a, the bottom surface of the second blocking ring (63) is located on the plane of blocking water surface b, and the stepped surfaces of the sedimentation ring (5) are the overflow surface c and the overflow surface d, respectively.

7. A municipal sewage settling tank with enhanced filtration effect according to claim 6, characterized in that: The barrier plate (83) is in an inclined state, the inclined bottom end of the barrier plate (83) is connected to the support ring (82), and the inclined top end of the barrier plate (83) is flush with the overflow surface c.

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