CN211705999U - Improved generation vertical flow sedimentation tank - Google Patents

Abstract

The utility model discloses an improved generation vertical flow sedimentation tank, including the cell body, be provided with water inlet and delivery port on the cell body, the cell body bottom is provided with big-end-up's conical mud bucket, is provided with the mud scraping device in the cell body, and the mud scraping device includes drive arrangement, central transmission shaft and scraper blade, and central transmission shaft links to each other with drive arrangement's output, and the scraper blade is fixed on central transmission shaft, and the scraper blade is located the inboard of mud bucket, and the mud discharge mouth has been seted up to the bottom of mud bucket. The utility model discloses an improved generation vertical flow sedimentation tank, be provided with the mud scraping device in its cell body, in sewage treatment process, drive arrangement can drive central transmission shaft slowly rotatory, and the scraper blade can play to scrape and grind and stirring effect to the mud in the mud fill as the sludge concentration district, increases the mobility of mud, makes mud can last smooth discharge from the mud drainage port, avoids the mud jam condition, and is effectual to the sediment of mud, guarantees the continuity and the mud drainage efficiency of mud drainage, ensures quality of water purifying effect.

Description

Improved generation vertical flow sedimentation tank

Technical Field

The utility model relates to a sewage treatment plant specifically is an improved generation vertical flow sedimentation tank.

Background

The sedimentation tank is a common sewage treatment device or system and has the functions of removing suspended matters in water and purifying water quality. The structure of the existing sedimentation tank generally comprises a tank body with a water inlet and a water outlet, a sedimentation device is arranged inside the tank body, and a sludge collecting hopper is arranged at the bottom of the tank body. After water flow enters the tank body through the water inlet, sludge is precipitated in the precipitation device and collected by the sludge collecting hopper, and purified water is discharged from the water outlet. For example, CN202822888U discloses a rapid horizontal flow high-efficiency sedimentation separator, which comprises an upper rectangular tank and a lower conical mud-collecting bucket, wherein a plurality of rows of vertically parallel special-shaped inclined plates are vertically distributed in the rectangular tank, the special-shaped inclined plates are formed into a whole by a vertical baffle plate and an upward inclined plate, the inclined plates of the special-shaped inclined plates are fixed on a vertical partition plate, the vertical baffle plate is fixed on a vertical partition strip, two vertically adjacent special-shaped inclined plates and the vertical partition plate form a horizontal flow passage, the cross section of the flow passage is parallelogram, a mud discharge port is arranged between the vertical baffle plates of the upper and lower special-shaped inclined plates, two rows of special-shaped inclined plates are axially and symmetrically distributed by the vertical partition plate to form a special-shaped inclined plate group, a mud discharge passage is arranged in the area between the vertical partition strips of the two adjacent special-shaped inclined plate groups, and the mud discharge ports between the vertical, the device has compact structure, small volume, small occupied space and quick, thorough and efficient separation of water and suspended matters. The existing sedimentation tank simply collects sludge through a sludge collecting hopper, and the sludge is easy to adhere and accumulate in a sedimentation device and the sludge collecting hopper due to high viscosity of the sludge, so that the sludge cannot be timely and effectively discharged, and the continuity and the sludge discharge efficiency of sludge discharge are influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that, to prior art not enough, provide one kind to the sedimentation of mud effectual, arrange the continuity of mud and arrange the efficient improved generation vertical flow sedimentation tank of mud.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the improved vertical flow sedimentation tank comprises a tank body, wherein a water inlet and a water outlet are formed in the tank body, a conical mud bucket with a large upper part and a small lower part is arranged at the bottom of the tank body, a mud scraping device is arranged in the tank body, the mud scraping device comprises a driving device, a central transmission shaft and a scraper, the central transmission shaft is connected with the output end of the driving device, the scraper is fixed on the central transmission shaft, the scraper is positioned on the inner side of the mud bucket, and a mud discharge port is formed in the bottom of the mud bucket.

The utility model discloses vertical flow sedimentation tank is provided with the mud scraping device in its cell body, and in sewage treatment process, drive arrangement can drive central transmission shaft and slowly rotate, and the scraper blade can play the scraping and stirring effect to the mud in the mud fill as the sludge concentration district, increases the mobility of mud, makes mud can last smooth discharge from the mud discharging port, avoids the mud jam condition, and is effectual to the sediment of mud, guarantees the continuity and the mud discharging efficiency of mud discharging, ensures quality of water purifying effect.

Preferably, the mud scraping device comprises a plurality of inclined plates, the inclined plates are fixedly connected with the central transmission shaft through a plurality of connecting rods respectively, each inclined plate is parallel to the inner side surface of the mud bucket, and a gap is formed between each inclined plate and the inner side surface of the mud bucket. The arrangement of the plurality of inclined plates ensures the sludge scraping effect, has a certain flow guide effect and can promote the sludge to flow to the sludge discharge port.

Preferably, a vertically arranged center cylinder, a sleeve and a sludge turnover box are fixed in the tank body, the sleeve is sleeved outside the center cylinder, the sleeve and the center cylinder enclose a closed annular cavity, the water inlet and the water outlet are respectively positioned at the upper part of the tank body, a water inlet pipe transversely penetrates through the water inlet, the water inlet pipe is communicated with the annular cavity, the lower part of the center cylinder is provided with an opening, the side wall of the center cylinder is provided with a plurality of through holes, the inner cavity of the center cylinder is communicated with the annular cavity through the plurality of through holes, the center cylinder is sleeved outside the center transmission shaft, the sludge turnover box is erected above the sludge hopper, the outer side surface of the sludge turnover box and the inner side surface of the tank body enclose an annular channel, and the upper part of the sludge turnover box is provided with an opening, the lower part of the central transmission shaft penetrates through the mud turning box and extends into the mud bucket, the lower parts of the sleeve and the central cylinder respectively extend into the bottom of the mud turning box, and when the mud turning box is used, sewage led into the annular cavity from the water inlet pipe enters the inner cavity of the central cylinder through the through holes and continuously flows into the mud turning box from the lower part of the central cylinder. By utilizing the gravity principle, mud, floccules, colloids and the like in the sewage are slowly deposited at the middle lower part of the sludge turning box, supernatant overflows from the upper part of the sludge turning box and is accumulated in the tank body, and water finally flows out of the tank body from the water outlet along with the continuous rising of the water level in the tank body. Along with the accumulation of mud, floccule, colloid etc. in turning over the mud case, formed one deck "natural filter layer" in turning over the mud incasement, play the filtering action to the follow-up sewage that constantly gets into in the mud case that turns over, filter the interception with mud and pollutant, played certain quality of water purification effect, improved the efficiency that sewage vertical flow deposits. And finally, as the sludge is deposited more and more in the sludge turnover box, the sludge overflows from the upper part of the sludge turnover box and continuously flows into the mud bucket through the annular channel under the action of the self weight of the sludge. The central cylinder, the sleeve and the sludge turning box are matched for use, so that the flow of sewage is more concentrated, the sewage can be intensively introduced into the sludge turning box, and supernatant is discharged firstly after natural sedimentation in the sludge turning box. At the initial stage of sewage treatment, the sludge-water mixture is mainly used in the sludge turning box, and along with the increase of the sludge amount deposited in the sludge turning box, supernatant firstly overflows from the upper part of the sludge turning box, and when the sludge in the sludge turning box is accumulated to a certain amount, the supernatant also overflows from the upper part of the sludge turning box.

Furthermore, a plurality of first supporting cross rods are fixed on the outer side of the mud turning box, the mud turning box is fixed at the bottom of the pond body through the first supporting cross rods, a plurality of second supporting cross rods are fixed on the inner side of the mud turning box, and two ends of each second supporting cross rod are respectively fixed on the sleeve and the mud turning box. The first supporting cross rod and the second supporting cross rod can improve the strength of the mud turning box and facilitate the installation of the mud turning box.

Preferably, the lower part of the central cylinder is communicated with a water distribution device, the water distribution device is suspended in the sludge turning box, and when the sludge turning box is used, sewage in the central cylinder flows through the water distribution device and enters the sludge turning box. Besides the water distribution function, the water distribution device also plays a certain surging role in the sludge turning box, so that redundant sludge overflows from the upper part of the sludge turning box and falls into the annular channel and the sludge hopper to be concentrated, and the continuity of sludge discharge is improved.

Furthermore, the water distribution device comprises an even number of water distribution pipes which are horizontally arranged by taking the central transmission shaft as the center, each water distribution pipe is provided with a plurality of water distribution holes, and the plurality of water distribution holes are arranged at intervals along the length direction of each water distribution pipe so as to ensure the uniform water distribution effect.

Preferably, the aperture of the water distribution hole on each water distribution pipe is gradually increased along with the distance from the central transmission shaft. In the water treatment process, sewage flows in from the middle of the sludge turning box, and the design of the water distribution holes with gradually increased hole diameters is adopted, so that the uniform water distribution is further ensured.

Preferably, the plurality of water distribution holes are formed at the lower part of each water distribution pipe, and the plurality of water distribution holes are symmetrically arranged by taking a longitudinal section passing through the center line of each water distribution pipe as a center, so that the uniformity of water distribution can be improved.

Preferably, a cylindrical overflow weir is arranged in the tank body, the overflow weir is arranged at the upper part of the inner side of the tank body, the outer diameter of the overflow weir is smaller than the inner diameter of the tank body, an annular water collecting tank with an upper opening is defined by the outer side surface of the overflow weir and the inner side surface of the tank body, and the water outlet is communicated with the water collecting tank. The overflow weir has the buffer function, can prevent a large amount of water from flowing to the water outlet, and ensures the water treatment effect.

Preferably, the upper edge of the overflow weir is provided with a circle of saw teeth to play a further role in buffering.

Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses an improved generation vertical flow sedimentation tank, be provided with the mud scraping device in its cell body, in sewage treatment process, drive arrangement can drive central transmission shaft slowly rotatory, and the scraper blade can play to scrape and grind and stirring effect to the mud in the mud fill as the sludge concentration district, increases the mobility of mud, makes mud can last smooth discharge from the mud drainage port, avoids the mud jam condition, and is effectual to the sediment of mud, guarantees the continuity and the mud drainage efficiency of mud drainage, ensures quality of water purifying effect.

Drawings

FIG. 1 is a schematic structural diagram of an improved vertical flow sedimentation tank in the embodiment;

FIG. 2 is a schematic diagram showing the arrangement of the sizes of water distribution holes in the water distribution pipes;

FIG. 3 is a schematic view (top view) of a water distribution device comprising 2 water distribution pipes connected to a central cylinder and a central transmission shaft;

FIG. 4 is a schematic view (top view) of a water distribution device comprising 4 water distribution pipes connected to a central cylinder and a central transmission shaft;

FIG. 5 is a schematic view (top view) of a water distribution device comprising 8 water distribution pipes connected to a central cylinder and a central transmission shaft;

FIG. 6 is a schematic cross-sectional view of a water distribution pipe having 1 arrangement of water holes;

FIG. 7 is a schematic cross-sectional view of a water distribution pipe having 3 water distribution holes;

FIG. 8 is a schematic cross-sectional view of a water distribution pipe having 4 rows of water holes.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The improved vertical flow sedimentation tank of embodiment 1, as shown in fig. 1, comprises a tank body 1, a water inlet 11 and a water outlet 12 are arranged on the tank body 1, a tapered mud bucket 2 with a large top and a small bottom is arranged at the bottom of the tank body 1, a mud scraping device is arranged in the tank body 1, the mud scraping device comprises a driving device 31, a central transmission shaft 3 and a scraping plate, the central transmission shaft 3 is connected with an output end of the driving device 31, in this embodiment, the driving device 31 adopts a motor, the motor 31 is installed at the top end of the tank body 1, the scraping plate is fixed on the central transmission shaft 3, the scraping plate is located at the inner side of the mud bucket 2, the scraping plate comprises a plurality of inclined plates 4, the plurality of inclined plates 4 are respectively and fixedly connected with the central transmission shaft 3 through a plurality of connecting rods 41, each inclined plate 4 is arranged parallel to the inner side of the mud bucket 2, a cylindrical overflow weir 13 is arranged in the pool body 1, the overflow weir 13 is arranged on the upper part of the inner side of the pool body 1, the outer diameter of the overflow weir 13 is smaller than the inner diameter of the pool body 1, a circle of saw teeth 14 are arranged on the upper edge of the overflow weir 13, an annular water collecting tank 15 with an upper opening is enclosed by the outer side surface of the overflow weir 13 and the inner side surface of the pool body 1, and a water outlet 12 is communicated with the water collecting tank 15.

In the embodiment 1, a vertically arranged central cylinder 5 is fixed in a tank body 1, the sludge-dumping device comprises a sleeve 6 and a sludge-dumping box 7, wherein the sleeve 6 is sleeved on the outer side of a central cylinder 5, the sleeve 6 and the central cylinder 5 enclose a closed annular cavity 61, a water inlet 11 and a water outlet 12 are respectively positioned on the upper part of a tank body 1, a water inlet pipe 16 penetrates through the water inlet 11, the water inlet pipe 16 is communicated with the annular cavity 61, the lower part of the central cylinder 5 is opened, the side wall of the central cylinder 5 is provided with a plurality of through holes 51, the inner cavity of the central cylinder 5 is communicated with the annular cavity 61 through the plurality of through holes 51, the central cylinder 5 is sleeved on the outer side of a central transmission shaft 3, the sludge-dumping box 7 is erected above a sludge hopper 2, the outer side surface of the sludge-dumping box 7 and the inner side surface of the tank 1 enclose an annular channel 17, the upper part of the sludge-dumping box 7 is opened, the lower part of the central transmission shaft 3 penetrates through.

In embodiment 1, a plurality of first support cross bars 71 are fixed on the outer side of the sludge turnover box 7, the sludge turnover box 7 is fixed at the bottom of the pond body 1 through the plurality of first support cross bars 71, a plurality of second support cross bars 72 are fixed on the inner side of the sludge turnover box 7, and two ends of each second support cross bar 72 are respectively fixed on the sleeve 6 and the sludge turnover box 7.

The difference between the improved vertical flow sedimentation tank in the embodiment 2 and the embodiment 1 is that in the embodiment 2, the lower part of the central cylinder 5 is communicated with a water distribution device which is suspended in the sludge turning tank 7, and when the improved vertical flow sedimentation tank is used, sewage in the central cylinder 5 flows through the water distribution device and enters the sludge turning tank 7.

In embodiment 2, the water distribution device includes an even number of water distribution pipes 8 horizontally disposed with the central transmission shaft 3 as the center, each water distribution pipe 8 is provided with a plurality of water distribution holes 81, and the plurality of water distribution holes 81 are disposed at intervals along the length direction of each water distribution pipe 8; a plurality of water distribution holes 81 are formed at the lower part of each water distribution pipe 8, and the plurality of water distribution holes 81 are symmetrically arranged by taking the longitudinal section passing through the central line of each water distribution pipe 8 as the center; the diameter of the water distribution holes 81 on each water distribution pipe 8 is gradually increased with the distance from the central transmission shaft 3, as shown in fig. 2.

In example 2, the number of the water distribution pipes 8 is even, and may be 2 (as shown in fig. 3), 4 (as shown in fig. 4), 8 (as shown in fig. 5) or other even numbers. The number of the water distribution holes 81 symmetrically arranged centering on the longitudinal section passing through the center line of each water distribution pipe 8 may be 1 row (as shown in fig. 6), 3 rows (as shown in fig. 7), 4 rows (as shown in fig. 8) or other rows.

When sewage is treated by the improved vertical flow sedimentation tank of the embodiment 2, the sewage introduced into the annular chamber 61 from the water inlet pipe 16 enters the inner chamber of the central cylinder 5 through the plurality of through holes 51 and continuously enters the water distribution device from the lower part of the central cylinder 5 and flows into the sludge overturning tank 7 through the water distribution holes 81. By utilizing the gravity principle, mud, floccules, colloids and the like in the sewage are slowly deposited at the middle lower part of the sludge turning box 7, supernatant overflows from the upper part of the sludge turning box 7 and is accumulated in the tank body 1, and water finally flows out of the tank body from the water outlet 12 along with the continuous rise of the water level in the tank body 1. Along with the accumulation of mud, floccule, colloid, etc. in the mud turning box 7, a layer of 'natural filter layer' is formed in the mud turning box 7, and the filter effect is played to the sewage that continuously enters the mud turning box 7 in the follow-up, and mud and pollutant are filtered and intercepted, so that the mud in the mud turning box 7 also plays a certain water quality purification effect, and the efficiency of sewage vertical flow sedimentation is improved. And finally, as the sludge is deposited more and more in the sludge overturning box 7, the sludge overflows from the upper part of the sludge overturning box 7 and continuously flows into the mud bucket 2 through the annular channel 17 under the self-weight action of the sludge.

In the initial stage of sewage treatment, the sludge-water mixture is mainly used in the sludge turning box 7, and as the amount of sludge deposited in the sludge turning box 7 increases, supernatant firstly overflows from the upper part of the sludge turning box 7, and when the sludge in the sludge turning box 7 is accumulated to a certain amount, the supernatant also overflows from the upper part of the sludge turning box 7. The sludge in the sludge turning box 7 is substantially a mixture of sludge, floccules, colloids and the like, and the mixture forms a natural filter layer along with the sewage treatment, so that the sewage which continuously enters the sludge turning box 7 in the follow-up process can be filtered, the sludge and pollutants can be filtered and intercepted, and a certain water quality purification effect can be realized. Along with the proceeding of water treatment, water is accumulated in the tank body 1, the water level in the tank body 1 is continuously raised, the water overflows from the overflow weir 13, enters the water collecting tank 15 and finally flows out of the tank body 1 from the water outlet 12, and the overflowed sludge continuously flows into the sludge hopper 2 through the annular channel 17 under the self-weight action of the sludge to be concentrated and finally is discharged from the sludge discharge port 21. The flow paths are shown by arrows in figure 1.

In the sewage treatment process, drive arrangement 31 drives 3 slow rotations of central transmission shaft, and the scraper blade can play the sludge scraping and stirring effect in the mud fill 2 as the sludge concentration district, increases the mobility of mud, makes mud can last smooth discharge from mud discharging port 21, avoids the mud jam condition, and is effectual to the sediment of mud, guarantees the continuity and the mud discharging efficiency of mud discharging, ensures water purification effect.

Besides the water distribution function, the water distribution device also plays a certain surging role in the sludge turning box 7, so that the redundant sludge overflows from the upper part of the sludge turning box 7 and falls into the annular channel 17 and the sludge hopper 2 to be concentrated, and the continuity of sludge discharge is improved.

Claims (10)

1. The improved vertical flow sedimentation tank comprises a tank body, wherein a water inlet and a water outlet are formed in the tank body, a conical mud bucket with a large upper part and a small lower part is arranged at the bottom of the tank body, and the improved vertical flow sedimentation tank is characterized in that a mud scraping device is arranged in the tank body and comprises a driving device, a central transmission shaft and a scraper, the central transmission shaft is connected with the output end of the driving device, the scraper is fixed on the central transmission shaft, the scraper is positioned on the inner side of the mud bucket, and a mud discharge port is formed in the bottom of the mud bucket.

2. An improved vertical flow sedimentation tank as claimed in claim 1, wherein the scraper comprises a plurality of inclined plates, the inclined plates are fixedly connected with the central transmission shaft through a plurality of connecting rods, each inclined plate is arranged in parallel with the inner side surface of the hopper, and a gap is formed between each inclined plate and the inner side surface of the hopper.

3. An improved vertical flow sedimentation tank as claimed in claim 1, wherein a vertically arranged central cylinder, a sleeve and a sludge turnover box are fixed in the tank body, the sleeve is sleeved outside the central cylinder, the sleeve and the central cylinder enclose a closed annular cavity, the water inlet and the water outlet are respectively positioned at the upper part of the tank body, a water inlet pipe transversely penetrates through the water inlet, the water inlet pipe is communicated with the annular cavity, the lower part of the central cylinder is open, a plurality of through holes are arranged on the side wall of the central cylinder, the inner cavity of the central cylinder is communicated with the annular cavity through the plurality of through holes, the central cylinder is sleeved outside the central transmission shaft, the sludge turnover box is erected above the sludge hopper, the outer side surface of the sludge turnover box and the inner side surface of the tank body enclose an annular channel, the upper part of the mud dumping box is provided with an opening, the lower part of the central transmission shaft penetrates through the mud dumping box and extends into the mud bucket, and the lower parts of the sleeve and the central cylinder respectively extend into the bottom of the mud dumping box.

4. An improved vertical flow sedimentation tank as claimed in claim 3, wherein a plurality of first support cross bars are fixed to the outer side of the sludge turnover tank, the sludge turnover tank is fixed to the bottom of the tank body through the plurality of first support cross bars, a plurality of second support cross bars are fixed to the inner side of the sludge turnover tank, and both ends of each second support cross bar are respectively fixed to the sleeve and the sludge turnover tank.

5. An improved vertical flow sedimentation tank as claimed in claim 3, wherein the lower part of the central cylinder is connected to a water distribution device which is suspended in the sludge turnover tank, and when in use, sewage in the central cylinder flows through the water distribution device into the sludge turnover tank.

6. The improved vertical flow sedimentation tank as claimed in claim 5, wherein the water distribution device comprises an even number of water distribution pipes horizontally arranged with the central transmission shaft as the center, each water distribution pipe is provided with a plurality of water distribution holes, and the plurality of water distribution holes are arranged at intervals along the length direction of each water distribution pipe.

7. An improved vertical flow sedimentation tank as claimed in claim 6, wherein the diameter of the water distribution holes of each water distribution pipe is gradually increased with the distance from the central transmission shaft.

8. An improved vertical flow sedimentation tank as claimed in claim 6, wherein the plurality of water distribution holes are formed at a lower portion of each of the water distribution pipes, and the plurality of water distribution holes are arranged symmetrically about a longitudinal section passing through a center line of each of the water distribution pipes.

9. An improved vertical flow sedimentation tank as claimed in claim 1, wherein a cylindrical weir is provided in the tank body, the weir is provided at an upper portion of an inner side of the tank body, an outer diameter of the weir is smaller than an inner diameter of the tank body, an annular water collection tank with an upper opening is defined by an outer side surface of the weir and an inner side surface of the tank body, and the water outlet is communicated with the water collection tank.

10. An improved vertical flow sedimentation tank as claimed in claim 9, wherein the upper edge of the weir is provided with a ring of serrations.

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