CN203899220U - A Radial Flow Secondary Settling Tank Based on a Vertical Sludge Scraper - Google Patents

Abstract

The utility model discloses a radial flow type secondary sedimentation tank based on a vertical frame mud scraper, which comprises a water tank, wherein a water inlet pipe and a water outlet pipe are arranged on the water tank, and the vertical frame mud scraper is arranged in the water tank; the bottom of the water tank is in a funnel shape, a sludge collecting groove is arranged at the bottom of the water tank, and a sludge outlet pipe is arranged on the sludge collecting groove; the vertical frame mud scraper comprises a fixed beam, a transmission device, a center frame and a scraper row frame, wherein one end of the fixed beam is fixedly connected with the external bearing equipment of a water tank, the other end of the fixed beam is arranged right above the center of the water tank and is fixed with a shell of the transmission device, an output shaft of the transmission device is fixedly connected with the vertically arranged center frame, the scraper row frame is fixed on the center frame, at least two vertical scrapers are further fixed on the center frame, and the lower ends of the vertical scrapers extend into a mud collecting groove. The utility model discloses a radial flow type secondary sedimentation tank can reach better sludge cleaning effect for the quality of water of separation obtains great promotion.

Description

A Radial Flow Secondary Settling Tank Based on a Vertical Sludge Scraper

technical field

The utility model relates to sewage treatment equipment, in particular to a radial-flow secondary sedimentation tank based on a vertical mud scraper, belonging to the technical field of sewage treatment equipment.

Background technique

The secondary sedimentation tank is the secondary sedimentation tank. It is an important part of the activated sludge system. Its function is to separate the sludge, clarify the mixed solution, concentrate and return the activated sludge. Its working effect directly affects the activated sludge system. effluent quality and return sludge concentration. In the current secondary settling tank, a mud scraper is usually installed in the pool, and the sludge is concentrated and discharged by scraping the mud scraper. For example, the patent No. ZL201220511544.0 discloses "a small trial secondary settling tank", which includes a mud scraper, an overflow pipe, a mud discharge pipe, and a water inlet pipe and a drain pipe, which are rotated by a rotating shaft installed in the mud scraper. Drain the sludge. Although the secondary settling tank with this structure can separate sludge and water to a certain extent, when it is used in a large pool, its single scraper structure is difficult to stir all the sludge, especially at the bottom of the pool. In the center position, because the bottom of the pool is a structure inclined to the center, some sludge will accumulate in the center of the bottom of the pool and it is difficult to discharge. In addition, due to the agitation of the scraper, some of the lighter sludge and scum will float on the water surface and flow into the overflow tank as the water level rises, which not only fails to separate the sewage, but may even block the drainage tube, resulting in equipment downtime for maintenance.

Contents of the invention

In view of the above-mentioned deficiencies in the prior art, the main purpose of this utility model is to solve the problem of unsmooth sewage discharge in the current secondary settling tank, and further solve the problem of poor water quality in the separation of the secondary settling tank, and provide a A radial flow secondary settling tank with good sewage discharge capacity and excellent water quality.

The technical scheme of the utility model: a radial flow secondary sedimentation tank based on a vertical mud scraper, including a pool, an inlet pipe and an outlet pipe are installed on the pool, and a vertical mud scraper is installed in the pool; its features In that, the bottom of the pool is in the shape of a funnel inclined towards the center, and a mud collecting tank is arranged at the center of the bottom of the pool, the mud collecting tank is a rectangular tank, and a mud outlet pipe is installed on the bottom side wall of the mud collecting tank; The vertical frame mud scraper includes a fixed beam, a transmission device, a center frame and a scraper row frame. One end of the fixed beam is fixedly connected to the load-bearing equipment outside the pool, and the other end of the fixed beam is arranged directly above the center of the pool and connected to the The casing of the transmission device is fixed, and the output shaft of the transmission device extends downward into the pool and is fixedly connected with the vertically arranged center frame. The scraper row frame is elongated and fixed on the center frame. The board row frame is arranged along the horizontal direction, and at least two vertical scrapers are fixed on the center frame, and the lower ends of the vertical scrapers extend into the mud collecting tank.

In a further technical solution, a scum cleaning mechanism is also installed on the vertical frame mud scraper, and the scum cleaning mechanism is composed of a scum scraper and a scum rake; the scum scraper is floating on A long bar on the water surface, one end of the scum scraper is fixed on the center frame, and the other end of the scum scraper is pressed against the scum rake; the scum rake is installed on the scraper rack, and the floating The upper end of the slag rake plate is exposed to the water surface, and the scum rake plate is close to the scum baffle installed on the pool wall.

In a further technical solution, a steady flow cylinder is also installed on the center frame.

In a further technical solution, the angle between the inclined surface at the bottom of the pool and the horizontal plane is 15°.

In a further technical solution, the angle between the water inlet pipe and the water outlet pipe in the horizontal direction is 60°.

In a further technical solution, a steel walkway plate is also installed on the fixed beam.

In a further technical solution, the depth of the mud collecting tank is 1m~1.5m.

Still further, a water inlet and overflow mechanism is also installed on the pool wall of the pool, and the water inlet and overflow mechanism is composed of a water collection tank, a water outlet tank, and an overflow tank arranged side by side from the pool wall to the pool center. Constituted by a canal and a drainage trough, the water collection trough, the effluent main trough, the overflow channel and the drainage trough are all annular grooves with the center of the pool as the center; between the water collection trough and the water effusion main trough The diversion wall is provided with a water inlet hole at the bottom of the water collection tank, and a scum baffle is formed on the outside of the drainage trough, and the height of the scum baffle is greater than the height of the water surface of the pool.

Still further, the depth of the water collection tank is greater than the depth of the water outlet tank, and the distance between the diversion wall and the bottom of the pool is less than half of the depth of the water in the pool.

Still further, there are four vertical scrapers and they are evenly distributed.

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

1. The radial-flow secondary settling tank of this utility model adopts a mud scraper with a vertical frame structure. The mud scraper not only uses the scraper rack to clean up the sludge in the horizontal direction, but also is equipped with a vertical scraper. Use the plate to clean the sludge accumulated in the center of the bottom of the pool, so that a better sludge cleaning effect can be achieved.

2. The utility model adopts the structure of installing the scum scraper and the scum rake. The scum scraper is used to remove the scum on the water surface, and the scum rake is used to block the floating sludge on the water surface and various This residue greatly improves the quality of the separated water.

3. The secondary settling tank of the utility model also designs the overflow channel as a multi-layer structure, and is equipped with the structure of the main outlet channel, so that even in the case of a large amount of water inflow, the overflow channel can still maintain normal work , to prevent the water after the pool is separated from flowing back into the pool.

Description of drawings

Fig. 1 is a top view of a radial-flow secondary settling tank based on a vertical frame mud scraper of the present invention.

Fig. 2 is a structural schematic diagram of a radial-flow secondary settling tank based on a vertical frame mud scraper of the present invention.

In the figure, 1—water pool, 2—water inlet pipe, 3—water outlet pipe, 4—vertical mud scraper, 41—fixed beam, 42—transmission device, 43—center frame, 44—scraper rack, 45—vertical Direction scraper, 46—stabilizing tube, 47—walkway plate, 5—sludge collection tank, 6—sludge outlet pipe, 7—scum scraper, 8—scum rake, 9—scum baffle, 10— Inlet hole, 11—water collection main tank, 12—water outlet main tank, 13—overflow channel, 14—drainage groove, 15—drainage wall.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

As shown in Figures 1 and 2, a radial-flow secondary sedimentation tank based on a vertical mud scraper includes a pool 1, and the pool 1 is a large pool. The utility model takes a circular pool as an example for illustration . A water inlet pipe 2 and a water outlet pipe 3 are installed on the pool 1, the position of the water inlet pipe 2 is higher than the water outlet pipe 3, and the included angle between the water inlet pipe 2 and the water outlet pipe 3 in the horizontal direction is 60°. The bottom of the pool 1 is in the shape of a funnel inclined towards the center, and the angle between the inclined surface of the bottom of the pool 1 and the horizontal plane is 15°. A mud collecting tank 5 is arranged at the bottom center of the pool 1. The mud collecting tank 5 is a rectangular tank. The depth of the mud collecting tank 5 is 1m~1.5m, usually 1m is the best. A mud outlet pipe 6 is installed on the top, and the mud outlet pipe 6 transports the sludge to an external sludge storage place. A vertical frame mud scraper 4 is also installed in the pool 1. The vertical frame mud scraper 4 includes a fixed beam 41, a transmission device 42, a center frame 43 and a scraper row frame 44. The fixed beam 41 is a steel frame structure , one end of which is fixedly connected to the load-bearing equipment outside the pool 1. The load-bearing equipment can be various heavy pressing parts, the purpose is to support the mud scraper, and the specific load-bearing equipment can be selected according to the site environment. , not detailed here. The other end of the fixed beam 41 is arranged directly above the center of the pool 1 and fixed to the casing of the transmission device 42 , and a steel walkway plate 47 is also installed on the fixed beam 41 . The output shaft of the transmission device 42 protrudes downward into the pool 1 and is fixedly connected with the vertical center frame 43 . The transmission device 42 is driven by a motor, and the output shaft of the transmission device 42 will rotate after electrification, and drive the center frame 43 to rotate. A steady flow cylinder 46 is also installed on the center frame 43 . The scraper row frame 44 is in the shape of a strip and is fixed on the lower end of the center frame 43. The scraper row frame 44 is arranged along the horizontal direction and is close to the bottom of the pool 1. When the center frame 43 rotates, it will synchronously drive the scraper row frame 44 spins. In order to stir the sludge in the sludge collection tank 5 at the same time and avoid sludge accumulation, the utility model is also fixed with at least two vertical scrapers 45 on the center frame 43, and the lower ends of the vertical scrapers 45 extend into the sludge collection in slot 5. Here, four vertical scrapers 45 are taken as an example for illustration. During installation, the vertical scrapers 45 are evenly distributed, so that the best stirring effect can be obtained.

Referring to FIG. 2 , a scum cleaning mechanism is installed on the vertical frame mud scraper 4 , and the scum cleaning mechanism is composed of a scum scraper 7 and a scum rake 8 . The scum scraper 7 is a long bar floating on the water surface, one end of the scum scraper 7 is fixed on the upper end of the center frame 43 , and the other end of the scum scraper 7 is pressed against the scum rake 8 . The scum rake plate 8 is installed on the scraper row frame 44, and the upper end of the scum rake plate 8 is exposed to the water surface. After installation, the scum rake plate 8 is close to the scum baffle plate 9 installed on the pool wall of the pool 1. . Like this, the rubbish floating on the water surface just can be caught when cleaning mechanism rotates.

Referring to Fig. 1 and Fig. 2, a water inlet and overflow mechanism is also installed on the pool wall of the pool 1, and the water inlet and overflow mechanism is composed of a water collection tank 11 arranged side by side from the pool wall to the center of the pool, Outlet main tank 12, overflow channel 13 and drainage channel 14 are formed, and described water collecting main tank 11, water outlet main tank 12, overflow channel 13 and drainage channel 14 are all annular grooves with the center of the pool 1 as the center of circle, And the four grooves form an integral structure. Between the water collection tank 11 and the water outlet tank 12 is a diversion wall 15, the distance between the diversion wall 15 and the bottom of the pool 1 is less than 1/2 of the depth of the water in the pool 1, so that The water conveyed by the water inlet pipe 2 first flows into the bottom of the pool 1, thereby facilitating cleaning of the sludge. A water inlet 10 is provided at the bottom of the water collection tank 11. The function of the water inlet hole 10 is to allow the sewage to be cleaned to be preliminarily settled in the water collection tank 11 to play a role in pre-cleaning. The depth of the main water collection tank 11 is greater than the depth of the main water outlet tank 12, so that sufficient buffer space can be ensured in the main water collection tank 11. On the outside of the drainage groove 14 is a scum baffle 9 whose height is greater than that of the water surface of the pool 1 . The scum baffle 9 can prevent the scum from entering the drainage groove, and it is also convenient to clean the scum.

When working, the transmission device 42 is energized first, and then the transmission device 42 drives the scraper rack 44 and the vertical scraper 45 to rotate, and the scraper rack 44 and the vertical scraper 45 can collect and clean the sludge in the water. Make it sink into the mud collecting tank 5, and then further discharge. At the same time, the scum scraper 7 and the scum rake 8 on the mud scraper also rotate synchronously, and cooperate with the scum baffle 9 to remove the scum on the water surface, thereby achieving the purpose of improving the separated water quality.

It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than limit the technical solution. Although the applicant has described the utility model in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that those who are not familiar with the utility model The modification or equivalent replacement of the technical solution of the utility model cannot deviate from the purpose and scope of the technical solution, and shall be covered by the claims of the utility model.

Claims (10)

1. the Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down, comprises pond (1), and water inlet pipe (2) and outlet pipe (3) are installed on pond (1), and the frame mud scraper (4) that hangs down is installed in pond (1), it is characterized in that, the bottom of described pond (1) is centroclinal funnel shaped, and in pond, the bottom centre of (1) is provided with a mud-collecting slot (5), and described mud-collecting slot (5) is rectangular channel, on the sidewall of mud-collecting slot (5) bottom, sludge out pipe (6) is installed, described vertical frame mud scraper (4) comprises built-in beam (41), transmission device (42), centre frame (43) and the capable frame of scraper plate (44), one end of described built-in beam (41) bearing equipment outside with pond (1) is fixedly connected with, the other end of built-in beam (41) be located at center, pond (1) directly over and fix with the shell of transmission device (42), the output shaft of described transmission device (42) stretches into downwards in pond (1) and with the centre frame (43) of vertical laying and is fixedly connected with, the capable frame of described scraper plate (44) is elongate in shape and is fixed on centre frame (43), the capable frame of described scraper plate (44) along continuous straight runs is laid, on centre frame (43), be also fixed with at least two vertical scraper plates (45), the lower end of described vertical scraper plate (45) is stretched in mud-collecting slot (5).

2. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, it is characterized in that, on described vertical frame mud scraper (4), scum silica frost cleaning mechanism is also installed, described scum silica frost cleaning mechanism is comprised of scum silica frost scraper plate (7) and scum silica frost rake plate (8); Described scum silica frost scraper plate (7) is for swimming in the elongate posts on the water surface, and it is upper that one end of scum silica frost scraper plate (7) is fixed on centre frame (43), and the other end of scum silica frost scraper plate (7) and scum silica frost rake plate (8) push against; It is upper that described scum silica frost rake plate (8) is arranged on the capable frame of scraper plate (44), surfaces in the upper end of scum silica frost rake plate (8), and described scum silica frost rake plate (8) is close with the scum board (9) being arranged on the pool wall of pond (1).

3. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, is characterized in that, stabilizing feed well (46) is also installed on described centre frame (43).

4. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, is characterized in that, inclined plane and the horizontal plane angle of described pond (1) bottom are 15 °.

5. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, is characterized in that, described water inlet pipe (2) is 60 ° with outlet pipe (3) angle in the horizontal direction.

6. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, is characterized in that, the walkway board (47) of steel is also installed on described built-in beam (41).

7. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 1, is characterized in that, the degree of depth of described mud-collecting slot (5) is 1m ~ 1.5m.

8. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 2, it is characterized in that, on the pool wall of described pond (1), be also provided with into water overflow mechanism, described water inlet overflow mechanism is to consist of the total groove (11) that catchments being arranged side by side successively to center, pond from pool wall, the total groove of water outlet (12), overflow canal (13) and drainage trough (14), and the described total groove (11) that catchments, the total groove of water outlet (12), overflow canal (13) and drainage trough (14) is take the annular groove that center, pond (1) is the center of circle; Described catchmenting between total groove (11) and the total groove of water outlet (12), it is training wall (15), catchmenting, total groove (11) bottom offers inlet opening (10), in the outside of described drainage trough (14), be scum board (9), the height of described scum board (9) is greater than pond (1) water surface elevation.

9. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 8, it is characterized in that, the described degree of depth of catchmenting total groove (11) is greater than the degree of depth of the total groove of water outlet (12), the spacing at the bottom of described training wall (15) and pond, pond (1) be less than water in pond (1) the degree of depth 1/2nd.

10. a kind of Radial Flow Secondary Sedimentation Tank based on the frame mud scraper that hangs down according to claim 9, is characterized in that, described vertical scraper plate (45) is four and is uniformly distributed.