CN111632411A - Sedimentation tank sludge cleaning device for sewage treatment - Google Patents

Abstract

The invention relates to a sludge cleaning device in a sedimentation tank for sewage treatment. Two water pumps and a sludge pump are arranged on the truss of the sedimentation tank. One water pump extracts the clarified water in the sedimentation tank and sends the clarified water into the sedimentation tank At the bottom of the tank, the sludge at the bottom of the tank is sprayed with a nozzle to disperse the deposited sludge, and then the sludge pump is used to pump out the muddy water to realize the sludge discharge at the bottom of the tank. The clarified water is lifted to the height of the truss, and a water distribution pipe is arranged along the length of the truss. The water distribution pipe is provided with multiple water outlets. The clarified water lifted by the pump falls vertically downward from the water outlet of the water distribution pipe, and impacts the liquid level of the sedimentation tank. The ice is washed away, so as to maintain the fluidity of the liquid surface and facilitate the overflow and discharge of the floating sludge and debris on the liquid surface of the sedimentation tank.

Description

Sedimentation tank sludge cleaning device for sewage treatment

technical field

The invention relates to the technical field of sewage treatment equipment, in particular to a sludge cleaning device in a sedimentation tank for sewage treatment.

Background technique

Sewage treatment is a process that is often required in the field of industrial production, especially for various industries such as textiles, papermaking, printing and dyeing, and chemical industries. Due to the large amount of wastewater, if reliable sewage treatment is not carried out, it will cause extremely serious pollution to the environment. . For the current sewage treatment system, it mainly includes three parts: pretreatment system, biochemical treatment system, and mud water filtration system; the pretreatment system is mainly composed of grid filter tank and adjustment tank, which are used to filter out large particles of impurities and make sewage The water quality is kept uniform; the biochemical treatment system is mainly composed of anaerobic, anoxic, aerobic and other treatment systems. In the case of large sewage treatment, it is usually composed of anaerobic tanks and aerobic tanks. In the biochemical treatment tank, it is necessary to Add anaerobic bacteria, aerobic bacteria, etc., to make them react with nitrogen and phosphorus elements in sewage to remove eutrophic substances; the mud water filtration system is mainly composed of air flotation system, sedimentation tank and filter tank, etc. Physical separation of clean water.

The main function of the sedimentation tank in sewage treatment is to remove the sedimented sludge. The sludge settled at the bottom of the tank is scraped to the central mud pit by the scraper, and then discharged by the sludge discharge pipe. In the prior art, due to the accumulation of sludge at the bottom of the sedimentation tank, the resistance to scraping the sludge is large, and the scraper runs poorly, and when the sludge at the bottom of the sedimentation tank is too thick, the sludge is easy to harden at the bottom of the tank, which is even more ineffective. Useful for scraping mud. In addition, most of the sedimentation tank has debris such as floating mud and fallen leaves on the liquid surface. The floating sludge and debris are generally collected and removed in the scum tank by overflow. However, the existing sedimentation tank is generally large in size and is installed in Outdoors, in northern my country, it is easy to freeze, and the liquid level of the sedimentation tank does not flow, resulting in the inability to remove debris such as floating mud and fallen leaves on the liquid surface.

SUMMARY OF THE INVENTION

To sum up, in order to overcome the deficiencies of the prior art, the present invention provides a sludge cleaning device for a sedimentation tank for sewage treatment, which is provided with two water pumps, a sludge pump, and a water pump on the truss of the sedimentation tank. The clarified water of the sedimentation tank is extracted and sent to the bottom of the sedimentation tank, the sludge at the bottom of the tank is sprayed with a nozzle, the deposited sludge is washed away, and then the sludge is pumped out by a sludge pump to realize the sludge at the bottom of the tank. The clarified water in the sedimentation tank is extracted by another pump, and the clarified water is lifted to the height of the truss. The water distribution pipe is arranged along the length of the truss, and a plurality of water outlets are arranged on the water distribution pipe. The clarified water lifted by the pump flows from the outlet of the water distribution pipe. The nozzle falls vertically downward, impacting the liquid surface of the sedimentation tank, and the liquid surface is frozen and dispersed, so as to maintain the fluidity of the liquid surface and facilitate the overflow discharge of floating sludge and debris on the liquid surface of the sedimentation tank.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A sludge cleaning device for a sedimentation tank for sewage treatment, which includes a tank body, a water inlet pipe, a sewage pump, a truss, a sludge collecting tank, a scum tank, a clear water tank, a transmission device, a sludge pump, a first water pump, a sludge collecting tank cover, nozzle, blowing pipe, mud suction pipe and mud discharge pipe, the center of the pool body is provided with a water distribution chamber, and the lower end of the water distribution chamber is connected to the water inlet pipe arranged below the pool body, and the water inlet pipe is arranged in the center of the pool body. The water pipe is connected with the water outlet of the sewage pump, the upper end of the water distribution chamber is hinged with one end of the truss, and the other end of the truss is provided with a transmission device, and the transmission device drives the truss to rotate around the water distribution chamber. A clear water tank and a scum tank are arranged on the inner wall of the pool body in sequence from the outside to the inside. There is a mud collecting hood arranged at the bottom of the pool body, the top of the mud collecting hood is provided with a mud suction port, the mud suction port is connected with the mud suction pipe through a pipeline, and the mud suction pipe is communicated and arranged on the truss The sludge inlet of the sludge pump, the sludge outlet of the sludge pump is connected to the sludge collecting tank outside the tank body through the sludge discharge pipe, the truss is provided with a first water pump, and the first water pump is The water inlet is connected to the clear water layer in the tank body through a pipeline, and the water outlet of the first water pump is connected to a blowing pipe through a pipeline. The blowing pipe is arranged in the mud collecting cover and arranged along the length direction of the mud collecting cover. The blowing pipe is provided with a plurality of nozzles, and the plurality of nozzles are arranged along the length direction of the blowing pipe.

The technical solution of the present invention can also be realized as follows: the truss is provided with a second water pump, the lower end of the truss is provided with a water distribution pipe along its length direction, and the water inlet of the second water pump is connected to the clean water in the tank through the pipe The water outlet of the second water pump is connected to a water distribution pipe, and the water distribution pipe is arranged with a plurality of water outlets with downward openings along its length direction.

The technical solution of the present invention can also be realized as follows: the cross-sectional shape of the mud collecting hood is a semicircle, and a plurality of rollers are arranged therein, and the plurality of rollers are arranged along the length direction of the mud collecting hood.

The technical solution of the present invention can also be realized as follows: the mud collecting hood is provided with a mud raking device, and the mud raking device includes a raking mud rod and a raking tooth, and the raking mud rod and the mud collecting hood are in the The wheel frame of the roller is fixedly connected, and the raking mud rod is located on the side of the mud collecting hood in the forward direction. The raking mud rod is provided with a plurality of raking teeth, and the plurality of raking teeth are arranged along the length direction of the raking mud rod. The rake teeth are arranged obliquely, one end of which is fixedly connected with the raking mud rod, and the other end is in contact with the bottom surface of the pool body, and the rake teeth are wear-resistant rake teeth.

The technical solution of the present invention can also be realized as follows: the nozzles are arranged obliquely, and the angle a between the nozzles and the bottom surface of the mud collecting hood is 10° to 55°.

The beneficial effects of the present invention are:

1. In the present invention, two water pumps and one sludge pump are arranged on the truss of the sedimentation tank. , to disperse the deposited sludge, and then use the sludge pump to pump out the muddy water to realize the sludge discharge at the bottom of the pool, and another pump to extract the clarified water in the sedimentation tank, lift the clarified water to the height of the truss, and set it along the length of the truss. The water distribution pipe is provided with multiple water outlets, and the clarified water lifted by the pump falls vertically downward from the water outlet of the water distribution pipe, hitting the liquid surface of the sedimentation tank, and dispersing the liquid surface, thereby maintaining the fluidity of the liquid surface. It is convenient for the overflow and discharge of floating sludge and sundries on the liquid surface of the sedimentation tank.

2. The mud collecting hood of the present invention is provided with rollers, which can reduce the friction between the mud collecting hood and the bottom surface of the sedimentation tank, reduce the power required for the truss to rotate, and save energy.

3. The mud collecting hood of the present invention is provided with a mud raking device. The mud raking device moves forward with the mud collecting hood, and its raking teeth loosen the mud deposited on the bottom surface of the sedimentation tank. Dispersion, the combination of rake teeth and nozzles makes the deposited sludge fully dispersed, and prevents the deposited sludge from spreading under the action of the mud collecting cover. Sludge cleaning.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the mud collecting hood of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of FIG. 2 taken along the line A-A of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2 and Figure 3, a sewage treatment sedimentation tank sludge cleaning device, including a tank body 1, a water inlet pipe 2, a sewage pump 3, a truss 4, a sludge collecting tank 5, a scum tank 6, The clean water tank 7, the transmission device 8, the sludge pump 9, the first water pump 10, the sludge collection cover 11, the nozzle 12, the injection pipe 13, the sludge suction pipe 14, the sludge discharge pipe 15 and the roller 16, the The center is provided with a water distribution chamber 17, the lower end of the water distribution chamber 17 is connected to the water inlet pipe 2 arranged below the pool body 1, the water inlet pipe 2 is connected with the water outlet of the sewage pump 3, and the water distribution chamber The upper end of 17 is hinged with one end of the truss 4, the other end of the truss 4 is provided with a transmission device 8, and the transmission device 8 drives the truss 4 to rotate around the water distribution chamber 17. A clear water tank 7 and a scum tank 6 are arranged in sequence, the outside of the tank body 1 is provided with a mud collecting tank 5, the bottom of the clear water tank 7 is provided with a drain pipe, and the lower end of the truss 4 is suspended with a The mud collecting hood 11 is arranged at the bottom of the pool body 1 . The cross-sectional shape of the mud collecting hood 11 is a semicircle, and a plurality of rollers 16 are arranged in it. The plurality of rollers 16 are along the length of the mud collecting hood 11 . Orientation arrangement. The mud collecting hood 11 is provided with a mud raking device. The mud raking device includes a raking mud rod 21 and a raking tooth 22. The raking mud rod 21 is fixed to the wheel frame of the roller 16 in the mud collecting hood 11. connected, and the raking bar 21 is located on one side of the mud collecting hood 11 in the forward direction. The raking bar 21 is provided with a plurality of raking teeth 22, and the plurality of raking teeth 22 are arranged along the length direction of the raking bar 21. The raking teeth 22 are arranged obliquely, one end of which is fixedly connected with the raking mud rod 21, and the other end is in contact with the bottom surface of the pool body 1. The raking teeth 22 are wear-resistant raking teeth 22. The top of the mud collecting cover 11 is provided with a mud suction port 18, the mud suction port 18 is connected with the mud suction pipe 14 through a pipeline, and the mud suction pipe 14 is connected with the sludge pump 9 arranged on the truss 4. The mud inlet of the mud pump 9 is connected to the mud collecting tank 5 outside the pool body 1 through the mud discharge pipe 15. The truss 4 is provided with a first water pump 10. The water inlet of the water pump 10 is connected to the clear water layer in the pool body 1 through the pipeline, and the water outlet of the first water pump 10 is connected to the injection pipe 13 through the pipeline. The mud hood 11 is arranged in the length direction, the blowing pipe 13 is provided with a plurality of nozzles 12, the plurality of nozzles 12 are arranged along the length direction of the blowing pipe 13, the nozzles 12 are arranged obliquely, and the bottom surface of the mud collecting hood 11 is arranged. The included angle a is 30°. The truss 4 is provided with a second water pump 19, and the lower end of the truss 4 is provided with a water distribution pipe 20 along its length direction. The water outlet of the second water pump 19 is connected to the water distribution pipe 20, and the water distribution pipe 20 is arranged with a plurality of water outlets with downward openings along its length direction.

In use, under the action of the transmission device 8, the truss 4 rotates around the water distribution chamber 17 arranged in the center of the pool body 1, and the mud collecting cover 11 rotates with the truss 4 around the water distribution chamber 17 under the action of the truss 4. The roller 16 rotates to drive the raking rod 21 and the raking teeth 22 to advance, and the raking teeth 22 will loosen the sludge deposited at the bottom of the pool to loosen it, start the first water pump 10, and the first water pump 10 extracts the clear water layer in the sedimentation tank. The clean water is lifted to the height of the truss 4. After the clean water is pressurized, it falls into the blowing pipe 13 under the action of gravity, and is sprayed from the nozzle 12 at a high speed. In the water in the mud collecting hood 11, the sludge pump 9 is activated. Under the action of the sludge pump 9, the muddy water in the mud collecting hood 11 enters the mud suction pipe 14 from the mud suction port 18 at the top of the mud collecting hood 11, and then enters The sludge pump 9 finally enters the sludge discharge pipe 15 from the sludge outlet of the sludge pump 9, and then enters the sludge collection cover 11 outside the sedimentation tank body 1 from the sludge discharge pipe 15 for discharge. The floating mud debris floating on the liquid surface in the sedimentation tank body 1 enters the clear water tank 7 with the overflow of clean water, and as the liquid level in the clear water tank 7 rises, the floating mud debris floating on the liquid surface of the clear water tank 7 The overflow enters the scum tank 6, and the clean water in the clean water tank 7 is discharged along the drain pipe.

In the cold weather in winter, when the liquid surface of the sedimentation tank body 1 freezes, and when thin ice appears on the liquid surface, the second water pump 19 is started, and the second water pump 19 extracts the clean water in the clear water layer in the sedimentation tank, and lifts the clean water. To the height of the truss 4, the clean water is pressurized and fed into the water distribution pipe 20, and then flows vertically downward from the water outlet of the water distribution pipe 20. The liquid surface in the tank body 1 will disperse the thin ice on the liquid surface, so as to keep the liquid surface flowing.

It should be noted that the above-mentioned embodiment is an illustration of the technical solution of the present invention rather than a limitation, and equivalent replacement by those of ordinary skill in the art or other modifications made according to the prior art, as long as the idea of the technical solution of the present invention is not exceeded and scope should be included within the scope of the claims of the present invention.

Claims (5)

1. A sedimentation tank sludge cleaning device for sewage treatment, characterized in that it comprises a tank body (1), a water inlet pipe (2), a sewage pump (3), a truss (4), a sludge collecting tank (5), a floating Slag tank (6), clean water tank (7), transmission device (8), sludge pump (9), first water pump (10), sludge collecting cover (11), nozzle (12), spray pipe (13), The mud suction pipe (14) and the mud discharge pipe (15) are provided with a water distribution chamber (17) in the center of the pool body (1), and the lower end of the water distribution chamber (17) is connected to the pool body (17). 1) The water inlet pipe (2) below, the water inlet pipe (2) is connected with the water outlet of the sewage pump (3), and the upper end of the water distribution chamber (17) is hinged with one end of the truss (4), so The other end of the truss (4) is provided with a transmission device (8), and the transmission device (8) drives the truss (4) to rotate around the water distribution chamber (17). A clean water tank (7) and a scum tank (6) are arranged in sequence from outside to inside, a mud collecting tank (5) is arranged on the outside of the pool body (1), and a drain pipe is arranged at the bottom of the clean water tank (7). The lower end of the truss (4) is suspended with a mud collecting hood (11) arranged at the bottom of the pool body (1), and the top of the mud collecting hood (11) is provided with a mud suction port (18), so The mud suction port (18) is communicated with the mud suction pipe (14) through a pipeline, and the mud suction pipe (14) is communicated with the mud inlet of the mud pump (9) arranged on the truss (4). The sludge outlet of the sludge pump (9) is connected to the sludge collecting tank (5) outside the tank body (1) through the sludge discharge pipe (15), and the truss (4) is provided with a first water pump (10), The water inlet of the first water pump (10) is connected to the clear water layer in the pool body (1) through a pipeline, and the water outlet of the first water pump (10) is connected to a spray pipe (13) through a pipeline. The blowing pipe (13) is arranged in the mud collecting hood (11) and is arranged along the length direction of the mud collecting hood (11). ) along the length of the blowing pipe (13). 2 . The sludge cleaning device for sewage treatment according to claim 1 , wherein a second water pump ( 19 ) is arranged on the truss ( 4 ), and the lower end of the truss ( 4 ) is arranged along its length direction. 3 . There is a water distribution pipe (20), the water inlet of the second water pump (19) is connected to the clear water layer in the pool body (1) through a pipe, and the water outlet of the second water pump (19) is connected to the water distribution pipe (20) , the water distribution pipe (20) is arranged along its length direction with a plurality of water outlets with downward openings. 3. The device for cleaning sludge in a sedimentation tank for sewage treatment according to claim 1, characterized in that the cross-sectional shape of the mud collecting cover (11) is a semicircle, and a plurality of rollers (16) are arranged in it. , the plurality of rollers (16) are arranged along the length direction of the mud collecting cover (11). 4 . The sludge cleaning device in a sedimentation tank for sewage treatment according to claim 3 , wherein the mud collecting hood ( 11 ) is provided with a mud raking device, and the mud raking device comprises a mud raking rod ( 4 . 21) and raking teeth (22), the raking mud rod (21) is fixedly connected with the wheel frame of the roller (16) in the mud collecting hood (11), and the raking mud bar (21) is located in the mud collecting hood (11). ) on one side in the forward direction, a plurality of raking teeth (22) are arranged on the raking mud bar (21), and the plurality of raking teeth (22) are arranged along the length direction of the raking mud bar (21). (22) The inclined arrangement, one end of which is fixedly connected with the raking mud rod (21), and the other end is in contact with the bottom surface of the pool body (1), and the raking teeth (22) are wear-resistant raking teeth (22). 5 . The sludge cleaning device in a sedimentation tank for sewage treatment according to claim 1 , wherein the nozzles ( 12 ) are arranged obliquely, and the angle a between the nozzles ( 12 ) and the bottom surface of the mud collecting cover ( 11 ) is 10 to 55 . °.

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