Cover plate system at upper part of sedimentation tank of sewage treatment plant

Abstract

The utility model discloses an upper cover plate system of a sedimentation tank of a sewage treatment plant, which comprises a circular sedimentation tank, an annular channel arranged on the outer edge of the sedimentation tank and a cover plate system covered on the annular channel, the cover plate system comprises covering components distributed along the axis of the sedimentation tank at equal angles, and the adjacent covering components are tightly connected. The covering assembly comprises a fan-shaped mounting frame fixed above the annular channel and a fan-shaped cover plate hinged to one side of the mounting frame, a locking structure is arranged between the movable end of the cover plate and the mounting frame, and the sedimentation tank is communicated with a gap between the annular channel and the covering assembly. The effects of improving the cleaning efficiency of the inner side of the annular channel and maintaining the construction safety are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cover plate systems, in particular to an upper cover plate system for a sedimentation tank in a sewage treatment plant. Background Art

[0002] Sedimentation tanks are usually installed in sewage treatment plants or water purification plants to remove sludge contained in water. Sedimentation tanks are usually built in a circular or square shape with a depth of a predetermined height and a diameter of several tens of meters.

[0003] A sludge remover is installed at the bottom of the sedimentation tank, which rotates around the center of the sedimentation tank and guides the sludge accumulated at the bottom of the sedimentation tank to the sludge inlet set at the center of the bottom of the sedimentation tank to achieve rapid discharge. A discharge waterway of a predetermined width is provided at the edge of the sedimentation tank to discharge the water overflowing from the sedimentation tank into the waterway.

[0004] Generally, in order to ensure the safety of operation in the sedimentation tank, it is usually necessary to install a cover on the top of the sedimentation tank. This cover is usually large in size and inconvenient for inspecting the discharge waterway. Lichens such as algae microorganisms and pathogenic microorganisms usually grow in the discharge waterway. If the lichens are not removed within the specified time, it will affect the discharge rate of the overflow water in the sedimentation tank and affect its effect.

[0005] For example, a radial flow sedimentation tank in Chinese patent CN209128112U adopts a whole-piece cover plate. Therefore, when cleaning the water discharge channel, the operation is difficult and the cleaning is relatively laborious.

[0006] Based on the above problems, it is urgent to invent an upper cover system for the sedimentation tank of a sewage treatment plant, which can quickly and conveniently clean or maintain the waterway, reduce the difficulty of construction, and improve the safety of maintenance. Summary of the invention

[0007] The technical problem to be solved by the utility model is that the upper cover plate of the sedimentation tank is difficult to open and the cleaning efficiency is low.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: a cover system for the upper part of the sedimentation tank of a sewage treatment plant, a circular sedimentation tank, an annular channel arranged on the extension of the sedimentation tank and a cover system covered on the annular channel, the cover system includes covering components distributed at equal angles along the axis of the sedimentation tank, and adjacent covering components are tightly connected, the covering component includes a fan-shaped mounting frame fixed above the annular channel and a fan-shaped cover hinged on one side of the mounting frame, a locking structure is arranged between the movable end of the cover and the mounting frame, and the sedimentation tank is connected with the gap between the annular channel and the covering component.

[0009] Preferably, an adapter seat is fixedly connected to the inner side of the annular channel, one end of the installation frame is horizontally rotatably connected to the adapter seat, and the connecting shafts of the installation frame and the cover plate are respectively located on adjacent side walls of the covering assembly.

[0010] Preferably, an ear plate is provided at the top of the adapter seat, and two adapter rods are fixedly provided horizontally and vertically on the ear plate, and the top of the ear plate is inclined toward the inner side of the sedimentation tank, and the two adapter rods are respectively located at the top and bottom of the ear plate, and a connecting plate is fixedly connected to the end of the mounting frame, and the fixed end of the connecting plate is rotatably connected to the upper adapter rod, and the movable end of the connecting plate is provided with an arc-shaped notch for the lower adapter rod to be clamped into when the connecting plate rotates around the upper adapter rod.

[0011] Preferably, a handle is fixed on the top of the movable end of the installation frame.

[0012] Preferably, a support platform is fixedly provided above the outer side of the annular channel, and when the installation frame is in a horizontal state, the outer side of the installation frame overlaps the top of the support platform.

[0013] Preferably, the locking structure includes a locking shaft vertically rotatably arranged in the middle of the movable end of the cover plate, both ends of the locking shaft are fixedly connected with a baffle rod, and the distance between the baffle rod located on the inner side of the cover plate and the cover plate is equal to the thickness of the installation frame.

[0014] Preferably, the cover plate comprises a fan-shaped frame and a fan-shaped stainless steel plate fixed on the outer side wall of the frame, and a reinforcing rod is arranged in the middle of the frame.

[0015] Preferably, the tops of the opposite inner side walls of the annular channel are both provided with arc-shaped connecting edges.

[0016] 1. The utility model provides an upper cover plate system for a sedimentation tank in a sewage treatment plant. An annular channel is arranged on the top of the sedimentation tank to quickly discharge the supernatant in the sedimentation tank. At the same time, the annular channel is covered or opened by a cover plate, so that the annular channel can be quickly cleaned when the middle cover plate is not opened, and the use and maintenance are convenient and quick.

[0017] 2. The cover system includes a mounting frame and a cover. The mounting frame is rotatably arranged, and the cover is rotatably connected to the mounting frame. When the annular channel needs to be cleaned, the top of the annular channel is opened by rotating the cover or the mounting frame to facilitate cleaning inside the annular channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a top view of the upper cover system of the sedimentation tank of a sewage treatment plant according to the utility model.

[0020] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A.

[0021] Figure 3 It is a side view of the upper cover plate system of the sedimentation tank of a sewage treatment plant according to the utility model.

[0022] Figure 4 For the utility model Figure 3 An enlarged schematic diagram of part B.

[0023] Figure 5 For the utility model Figure 3 Enlarged schematic diagram of part C of FIG.

[0024] Figure 6 It is a structural schematic diagram of the cover plate of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the adapter of the utility model.

[0026] In the figure: 10, cover system; 12, mounting frame; 13, handle; 16, cover; 161, frame; 162, stainless steel plate; 163, locking shaft; 164, stop rod; 121, connecting beam; 122, cross bar; 20, sedimentation tank; 21, mounting beam; 30, annular channel; 31, connecting edge; 32, adapter; 321, ear plate; 322, adapter rod; 323, connecting plate; 324, mounting edge; 325, through hole; 326, arc-shaped notch. DETAILED DESCRIPTION

[0027] like Figure 1-7 As shown, the utility model proposes an upper cover system for a sedimentation tank in a sewage treatment plant, comprising a circular sedimentation tank 20, an annular channel 30 arranged on the outer extension of the sedimentation tank 20, and a cover system 10 covered on the annular channel 30. The cover system 10 comprises cover components distributed at equal angles along the axis of the sedimentation tank 20, and adjacent cover components are tightly connected. The cover component comprises a fan-shaped mounting frame 12 fixed above the annular channel 30 and a fan-shaped cover plate 16 hinged on one side of the mounting frame 12. A locking structure is arranged between the movable end of the cover plate 16 and the mounting frame 12, and the sedimentation tank 20 is connected to the gap between the annular channel 30 and the cover component.

[0028] An annular mounting beam 21 is fixedly arranged on the top of the inner wall of the sedimentation tank 20. The mounting beam 21 is used to support the annular channel 30. The cross-section of the annular channel 30 is U-shaped. The top of the sedimentation tank 20 is connected to the top of the annular channel 30. The upper clear liquid on the top of the sedimentation tank 20 can quickly enter the annular channel 30 to discharge the upper clear liquid in the sedimentation tank 20.

[0029] like Figure 1 and Figure 3 When the sedimentation tank 20 is working, the sludge is scraped to the center of the sedimentation tank 20 by the sludge remover in the sedimentation tank 20, and discharged through the sludge discharge port in the center of the sedimentation tank 20. The upper clear liquid in the upper part of the sedimentation tank 20 overflows and enters the annular channel 30 for discharge. When used for a long time, the sewage is rich in various algae, which will gradually adhere to the annular channel 30. At this time, the gantry vehicle at the top of the sedimentation tank 20 is controlled to move to the position where the annular channel 30 needs to be cleaned, and then the locking structure is manually opened, and the cover plate 16 is rotated to realize the opening of the annular channel 30 at the corresponding position, so as to facilitate the rapid cleaning of the annular channel 30.

[0030] like Figure 5 As shown. A transfer seat 32 is fixedly connected to the inner side of the annular channel 30, one end of the installation frame 12 is horizontally rotatably connected to the transfer seat 32, and the connecting shafts of the installation frame 12 and the cover plate 16 are respectively located on the adjacent side walls of the cover assembly. The installation frame 12 is composed of two connecting beams 121 and two cross bars 122.

[0031] The mounting frame 12 is padded by the adapter seat 32 so that when the cover plate 16 seals the top of the annular channel 30 , a connecting opening is left on one side of the annular channel 30 , so that the top of the annular channel 30 can be connected with the top of the sedimentation tank 20 , and the upper clear liquid of the sedimentation tank 20 can enter the annular channel 30 .

[0032] The rotating setting of the mounting frame 12 allows the inner wall of the annular channel 30 to be cleaned by rotating the mounting frame 12 when the annular channel 30 is overhauled. For minor maintenance, the inner wall of the annular channel 30 can be cleaned by rotating and opening the cover plate 16.

[0033] like Figure 5 , Figure 6 and Figure 7 The top of the adapter seat 32 is provided with an ear plate 321, on which two adapter rods 322 are fixedly provided horizontally and vertically, the top of the ear plate 321 is tilted toward the inner side of the sedimentation tank 20, and the two adapter rods 322 are respectively located at the top and bottom of the ear plate 321, and the end of the installation frame 12 is fixedly connected with a connecting plate 323, the fixed end of the connecting plate 323 is rotatably connected to the upper adapter rod 322, and the movable end of the connecting plate 323 is provided with an arc-shaped notch 326 for the lower adapter rod 322 to be inserted when the connecting plate 323 rotates around the upper adapter rod 322.

[0034] The ear plates 321 are arranged in pairs, and the ear plates 321 are fixedly connected to the inner top of the annular channel 30, and two transfer rods 322 are fixed between the two ear plates 321. The ear plates 321 include a mounting edge 324 fixed obliquely at the top, and the top of the mounting edge 324 is arranged toward the inner side of the sedimentation tank 20. Two through holes 325 are arranged on the mounting edge 324, and the two through holes 325 correspond to the two transfer rods 322 respectively, and are used for fixing the two transfer rods 322. The transfer rod 322 at the top is used for horizontally rotating the mounting connecting plate 323, and the transfer rod 322 at the bottom is used to cooperate with the arc-shaped notch 326 of the transfer rod 322. After the mounting frame 12 is rotated to a certain angle, the support locking of the mounting frame 12 can be performed.

[0035] like Figure 6 As shown, it is convenient for the staff to rotate the installation frame 12. A handle 13 is fixed to the top of the movable end of the installation frame 12.

[0036] like Figure 5 A support platform is fixedly arranged above the outer side of the annular channel 30, and when the installation frame 12 is in a horizontal state, the outer side of the installation frame 12 overlaps the top of the support platform.

[0037] The support platform is locked on the outer wall of the annular channel 30 by means of expansion bolts, and the mounting frame 12 is raised and supported horizontally by means of the support platform and the adapter 32 .

[0038] like Figure 2 , Figure 5 and Figure 6 The locking structure includes a locking shaft 163 which is vertically rotatably arranged in the middle of the movable end of the cover plate 16 , and both ends of the locking shaft 163 are fixedly connected with a blocking rod 164 , and the distance between the blocking rod 164 located on the inner side of the cover plate 16 and the cover plate 16 is equal to the thickness of the installation frame 12 .

[0039] By rotating the blocking rod 164 located on the outer side of the cover plate 16 , the angle of the blocking rod 164 located on the inner side of the cover plate 16 is adjusted to control the connection form between the cover plate 16 and the installation frame 12 .

[0040] like Figure 6 As shown, in order to ensure that the cover plate 16 has sufficient strength, the cover plate 16 comprises a sector-shaped frame 161 and a sector-shaped stainless steel plate 162 fixed on the outer side wall of the frame 161, and a reinforcing rod is arranged in the middle of the frame 161.

[0041] like Figure 4 The tops of the opposite inner side walls of the annular channel 30 are provided with arc-shaped connecting edges 31. The connecting edges 31 are used to reduce the scouring when the water flows into the annular channel 30, reduce the generation of foam, and facilitate the staff to use tools to clean the inner side wall of the annular channel 30.

Claims

1. A cover plate system for an upper part of a sedimentation tank in a sewage treatment plant, comprising a circular sedimentation tank (20), an annular channel (30) arranged outside the sedimentation tank (20), and a cover plate system (10) covering the annular channel (30), characterized in that: The cover plate system (10) comprises cover assemblies which are distributed at equal angles along the axis of the sedimentation tank (20), and adjacent cover assemblies are tightly connected. The cover assemblies comprise a fan-shaped mounting frame (12) fixed above the annular channel (30) and a fan-shaped cover plate (16) hinged to one side of the mounting frame (12). A locking structure is provided between the movable end of the cover plate (16) and the mounting frame (12), and the sedimentation tank (20) is connected to the gap between the annular channel (30) and the cover assembly.

2. The upper cover plate system of a sedimentation tank in a sewage treatment plant according to claim 1, characterized in that: An adapter seat (32) is fixedly connected to the inner side of the annular channel (30), one end of the installation frame (12) is horizontally rotatably connected to the adapter seat (32), and the connecting shafts of the installation frame (12) and the cover plate (16) are respectively located on adjacent side walls of the covering assembly.

3. A sewage treatment plant sedimentation tank upper cover system as claimed in claim 2, characterized in that: The top of the adapter seat (32) is provided with an ear plate (321), and two adapter rods (322) are fixedly provided on the ear plate (321) horizontally and vertically. The top of the ear plate (321) is arranged to be inclined toward the inner side of the sedimentation tank (20), and the two adapter rods (322) are respectively located at the top and bottom of the ear plate (321). The end of the installation frame (12) is fixedly connected with a connecting plate (323), and the fixed end of the connecting plate (323) is rotatably connected to the upper adapter rod (322), and the movable end of the connecting plate (323) is provided with an arc-shaped notch (326) for the lower adapter rod (322) to be clamped when the connecting plate (323) rotates around the upper adapter rod (322).

4. A sewage treatment plant sedimentation tank upper cover system as claimed in claim 3, characterized in that: A handle (13) is fixed to the top of the movable end of the installation frame (12).

5. The upper cover plate system of a sedimentation tank in a sewage treatment plant as claimed in claim 3, characterized in that: A support platform is fixedly arranged above the outer side of the annular channel (30); when the installation frame (12) is in a horizontal state, the outer side of the installation frame (12) overlaps the top of the support platform.

6. The upper cover plate system of a sedimentation tank in a sewage treatment plant according to claim 1, characterized in that: The locking structure comprises a locking shaft (163) which is vertically rotatably arranged in the middle of the movable end of the cover plate (16), and both ends of the locking shaft (163) are fixedly connected to blocking rods (164), and the spacing between the blocking rod (164) located on the inner side of the cover plate (16) and the cover plate (16) is equal to the thickness of the installation frame (12).

7. A sewage treatment plant sedimentation tank upper cover system as claimed in claim 6, characterized in that: The cover plate (16) comprises a fan-shaped frame (161) and a fan-shaped stainless steel plate (162) fixed to the outer side wall of the frame (161), and a reinforcing rod is arranged in the middle of the frame (161).

8. The upper cover plate system of a sedimentation tank in a sewage treatment plant according to claim 1, characterized in that: The tops of the opposite inner side walls of the annular channel (30) are both provided with arc-shaped connecting edges (31).

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