CN210786350U - Mud scraping mechanism for secondary sedimentation tank and secondary sedimentation tank - Google Patents
Mud scraping mechanism for secondary sedimentation tank and secondary sedimentation tank Download PDFInfo
- Publication number
- CN210786350U CN210786350U CN201921774834.2U CN201921774834U CN210786350U CN 210786350 U CN210786350 U CN 210786350U CN 201921774834 U CN201921774834 U CN 201921774834U CN 210786350 U CN210786350 U CN 210786350U
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- China
- Prior art keywords
- mud
- scraping mechanism
- sedimentation tank
- sludge
- secondary sedimentation
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- 238000007790 scraping Methods 0.000 title claims abstract description 72
- 238000004062 sedimentation Methods 0.000 title claims abstract description 36
- 239000010802 sludge Substances 0.000 claims abstract description 55
- 230000002093 peripheral effect Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000005056 cell body Anatomy 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Images
Abstract
The utility model relates to a scrape mud mechanism and second grade sedimentation tank for second grade sedimentation tank. Second grade sedimentation tank includes central zone and peripheral zone, its characterized in that, mud scraping mechanism includes: the driving device drives the mud scraping bridge of the mud scraping mechanism to rotate around the center of the secondary sedimentation tank; a central scraping mechanism comprising a first scraping plate extending radially within a central region of the secondary sedimentation tank to scrape sludge from the central region into a sludge collection hopper, and a connecting member connecting the first scraping plate to the scraping bridge; peripheral mud scraping mechanism, it includes: a second scraper bar connected to the scraper bridge by a connecting piece, the second scraper bar extending in a radial direction within a peripheral area of the secondary sedimentation tank; a mud suction pipe installed near the second mud scraper; the fan inputs air into the sludge suction pipeline so as to suck sludge into the sludge suction pipeline; and the mud guide pipeline is communicated with the mud suction pipeline and leads to the mud collection hopper.
Description
Technical Field
The utility model relates to a scrape mud mechanism and including the second grade sedimentation tank of scraping mud mechanism like this for second grade sedimentation tank.
Background
The clarifier used in the activated sludge system is generally called a secondary clarifier ("secondary clarifier") which can settle the sludge and concentrate it effectively so that the desired activated sludge concentration can be achieved when it is returned to the biochemical pond. The characteristics of the secondary sedimentation tank make the sludge collection mode very important: the sludge collection amount is large, and meanwhile, the retention time of the sludge at the bottom of the tank needs to be strictly controlled, so that the deterioration of the sludge property caused by the lack of aeration for a long time is avoided. The mode of mud is scraped to general selection of small-size cell body, and equipment is simple, and the investment is also lower, but apart from the mud of central bagger department far away, owing to be subject to the structure of mud scraper, can't in time scrape central bagger, anaerobic reaction can take place under the very unfavorable condition, influences two heavy pond water quality of water of leaving. For a larger tank body, a larger bottom slope is needed for collecting peripheral sludge to a central sludge hopper by sludge scraping, so that the tank body is deeper; meanwhile, the retention time of peripheral sludge is too long only by sludge scraping, so that a self-siphon sludge scraping bridge is selected for use, the sludge suction equipment is complex, the manufacturing cost is high, the device is not stable enough in operation, the sludge suction is not thorough and uniform, the sludge is accumulated too much, and the final water quality of the secondary sedimentation tank is influenced.
Therefore, to the above shortcoming in the prior art, the utility model aims to provide a mud scraping mechanism that can overcome at least one of above shortcomings.
SUMMERY OF THE UTILITY MODEL
The utility model provides a scrape mud mechanism for second grade sedimentation tank, second grade sedimentation tank includes central zone and peripheral region, its characterized in that, it includes to scrape mud mechanism: the driving device drives the mud scraping bridge of the mud scraping mechanism to rotate around the center of the secondary sedimentation tank; a central scraping mechanism comprising a first scraping plate extending radially within a central region of the secondary sedimentation tank to scrape sludge from the central region into a sludge collection hopper, and a connecting member connecting the first scraping plate to the scraping bridge; peripheral mud scraping mechanism, it includes: a second scraper bar connected to the scraper bridge by a connecting piece, the second scraper bar extending in a radial direction within a peripheral area of the secondary sedimentation tank; a mud suction pipe installed near the second mud scraper; the fan inputs air into the sludge suction pipeline so as to suck sludge into the sludge suction pipeline; and the mud guide pipeline is communicated with the mud suction pipeline and leads to the mud collection hopper.
Advantageously, the peripheral scraping means further comprise an air intake duct connected between the fan and the mud suction duct for feeding air into the mud suction duct.
Advantageously, the peripheral mud scraping mechanism further comprises an air inlet control valve arranged on the air inlet pipe to regulate the air flow rate and thus the sludge flow rate sucked into the mud suction pipe.
Advantageously, the peripheral mud scraping means comprise an air release ring arranged at the outlet of the air intake duct into the mud suction duct.
Advantageously, an air outlet is arranged on the sludge suction pipeline.
Advantageously, the sludge-guiding duct comprises a transverse duct in direct communication with the sludge-suction duct and a vertical duct in communication with the transverse duct, the vertical duct leading to the sludge-collecting hopper.
Advantageously, the transverse conduit extends obliquely downwards towards the centre of the secondary sedimentation tank.
Advantageously, the diameter of the vertical ducts is greater than the diameter of the transverse ducts.
Advantageously, the first and second mud scrapers are separate.
Advantageously, the first and second mud scrapers overlap each other.
The utility model also provides a second grade sedimentation tank, include as above mud scraping mechanism.
Drawings
The advantages and objects of the present invention will be better understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:
fig. 1 shows a schematic view of a secondary sedimentation tank comprising a mud scraping mechanism according to the present invention.
Fig. 2 shows a schematic view of a peripheral mud scraping mechanism according to the present invention.
Detailed Description
Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The term "sequentially comprising A, B, C, etc" merely indicates the order of the included elements A, B, C, etc. and does not exclude the possibility of including other elements between a and B and/or between B and C.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof.
Fig. 1 shows a schematic view of a secondary sedimentation tank comprising a mud scraping mechanism according to the present invention. The secondary sedimentation tank comprises a central region and a peripheral region, preferably the central region is inclined towards the centre of the secondary sedimentation tank, and the peripheral region is flat. In this example, the central region covers an area 2/3 from the center of the secondary settling tank to the diameter of the secondary settling tank, with the remainder of the secondary settling zone being the peripheral region.
The mud scraping mechanism comprises a driving device 2 for driving a mud scraping bridge 1 of the mud scraping mechanism to rotate around the center of the secondary sedimentation tank. The mud scraping mechanism further comprises a central mud scraping mechanism and a peripheral mud scraping mechanism. The central mud scraping mechanism is used for scraping the sludge in the central area into the sludge collecting hopper 3, and the peripheral mud scraping mechanism is used for scraping the sludge in the peripheral area into the sludge collecting hopper 3. In particular, the central scraping mechanism comprises a first scraping plate 4, which is connected to the scraping bridge by means of a connecting piece 5, extends in the radial direction in the central area of the secondary sedimentation tank, and scrapes the sludge in the central area along with the rotation of the scraping bridge, so that the sludge is collected in the sludge collecting hopper 3.
The peripheral scraping mechanism comprises a second scraper bar 6, which is also connected to the scraper bridge by means of a connecting piece 5. The second scraper may be integrated with the first scraper or may be separated from the first scraper, and when the second scraper is separated from the first scraper, the second scraper and the first scraper overlap each other, so that sludge at the bottom of the secondary sedimentation tank can be ensured to be scraped, and fig. 1 shows no overlapping area for showing a separated state. The second scraper bar extends radially in the peripheral area. The peripheral scraping mechanism further comprises a sludge suction pipe 7 installed near the second scraping plate, and one or more sludge suction pipes for sucking sludge in the peripheral area can be provided as required, as described below.
As shown in fig. 2, the blower 8 is used for inputting air into the mud suction pipe 7 through the air inlet pipe 9, the density of the fluid in the mud suction pipe is reduced as a large number of bubbles are blown in, and the outside of the mud suction pipe is a normal mud-water mixture, and the pressure outside the mud suction pipe is greater than the pressure inside the mud suction pipe due to the difference of the densities, so that the mud in the peripheral area is sucked into the mud suction pipe 7 through the mud inlet (not shown). The sludge then enters a sludge conduit communicating with the sludge suction conduit and further to a sludge collection hopper. The mud guiding pipeline comprises a transverse pipeline 10 directly communicated with the mud sucking pipeline 7 and a vertical pipeline 11 communicated with the transverse pipeline 10, and the vertical pipeline is communicated with the mud collecting hopper 3. Preferably, the transverse conduit extends obliquely downwards towards the centre of the secondary sedimentation tank, so that sludge can flow by gravity along the transverse conduit towards the vertical conduit and into the sludge collection hopper. Advantageously, the diameter of the vertical pipes is greater than the diameter of the transverse pipes, to make it easier to convey the sludge to the sludge collection hopper. An overhaul channel 12 is arranged on the fan accessory, so that each part can be conveniently overhauled.
The peripheral mud scraping mechanism further includes an air intake control valve (not shown) provided on the air intake pipe 9 to regulate the air flow rate, thereby controlling the flow rate of the sludge sucked into the mud suction pipe 7. An air release ring (not shown) is also provided at the outlet of the air inlet pipe into the mud suction pipe to allow air to more uniformly flow into the mud suction pipe to promote the mud suction effect. An air outlet (not shown) is provided on the sludge suction duct to discharge air. Of course, an exhaust port may be provided in the lateral duct as long as air can be exhausted.
The utility model discloses a mud scraping mechanism utilizes central zone to scrape mud and peripheral zone to inhale the mode that mud combined together, and it is longer to have solved the single mud scraper mud dwell time in the great cell body, and the darker problem of cell body structure has also avoided simultaneously from siphon equipment cost height, and the problem that the working costs is high has both advantages concurrently.
The above description is merely illustrative of the present invention, which is set forth to enable one of ordinary skill in the art to make and use the present invention in its full, but not limiting, form. The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention to achieve the aim of the invention.
Claims (11)
1. A mud scraping mechanism for a secondary sedimentation tank, the secondary sedimentation tank comprising a central region and a peripheral region, the mud scraping mechanism comprising:
the driving device drives the mud scraping bridge of the mud scraping mechanism to rotate around the center of the secondary sedimentation tank;
a central scraping mechanism comprising a first scraping plate extending radially within a central region of the secondary sedimentation tank to scrape sludge from the central region into a sludge collection hopper, and a connecting member connecting the first scraping plate to the scraping bridge;
peripheral mud scraping mechanism, it includes:
a second scraper bar connected to the scraper bridge by a connecting piece, the second scraper bar extending in a radial direction within a peripheral area of the secondary sedimentation tank;
a mud suction pipe installed near the second mud scraper;
the fan inputs air into the sludge suction pipeline so as to suck sludge into the sludge suction pipeline;
and the mud guide pipeline is communicated with the mud suction pipeline and leads to the mud collection hopper.
2. The mud scraping mechanism of claim 1, wherein said peripheral mud scraping mechanism further comprises an air intake duct connected between the fan and the mud suction duct for feeding air into the mud suction duct.
3. The mud scraping mechanism of claim 2, wherein said peripheral mud scraping mechanism further comprises an air inlet control valve disposed on the air inlet pipe to regulate the flow of air to control the flow of sludge drawn into the mud suction pipe.
4. A mud scraping mechanism as claimed in claim 2, wherein said peripheral mud scraping mechanism includes an air release ring disposed at the outlet of said air inlet duct into said mud suction duct.
5. A mud scraping mechanism as claimed in claim 2, wherein said mud suction pipe is provided with an air outlet.
6. A mud scraping mechanism as claimed in claim 1, wherein said mud guiding conduit comprises a transverse conduit in direct communication with the mud suction conduit and a vertical conduit in communication with the transverse conduit, the vertical conduit leading to the mud collection hopper.
7. A mud scraping mechanism as claimed in claim 6, wherein the transverse duct extends obliquely downwards towards the centre of the secondary sedimentation tank.
8. A mud scraping mechanism as claimed in claim 6, wherein the diameter of said vertical duct is greater than the diameter of said transverse duct.
9. The mud scraping mechanism of claim 1, wherein the first and second mud scraping plates are separate.
10. The mud scraping mechanism of claim 9, wherein the first and second mud scraping plates overlap one another.
11. A secondary sedimentation tank comprising a mud scraping mechanism as claimed in any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774834.2U CN210786350U (en) | 2019-10-22 | 2019-10-22 | Mud scraping mechanism for secondary sedimentation tank and secondary sedimentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774834.2U CN210786350U (en) | 2019-10-22 | 2019-10-22 | Mud scraping mechanism for secondary sedimentation tank and secondary sedimentation tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210786350U true CN210786350U (en) | 2020-06-19 |
Family
ID=71237018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921774834.2U Active CN210786350U (en) | 2019-10-22 | 2019-10-22 | Mud scraping mechanism for secondary sedimentation tank and secondary sedimentation tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210786350U (en) |
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2019
- 2019-10-22 CN CN201921774834.2U patent/CN210786350U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 3101, 27th Floor, Building 1, Yard 38, East 3rd Ring North Road, Chaoyang District, Beijing, 100026 Patentee after: Suez Environmental Technology (Beijing) Co.,Ltd. Address before: 100026 31 / F, Taikang financial building, building 1, courtyard 38, East Third Ring Road North, Chaoyang District, Beijing Patentee before: Suez Water Treatment Co,.Ltd. |
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| CP03 | Change of name, title or address |