CN113443741A

CN113443741A - Follow-on high-density pond

Info

Publication number: CN113443741A
Application number: CN202110746289.1A
Authority: CN
Inventors: 丁云松; 于鹏; 陈远; 庞彦绮
Original assignee: Chongqing Liangping Drainage Co ltd
Current assignee: Chongqing Yudong Water Service Co.,Ltd.
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-09-28
Anticipated expiration: 2041-07-01
Also published as: CN113443741B

Abstract

The invention relates to an improved high-density pond, which comprises an antifouling sludge settling structure, wherein the antifouling sludge settling structure comprises a plurality of slopes and a flushing main pipe; the slopes are respectively arranged at the junctions of the two adjacent vertical pool walls and the pool bottom; a water inlet valve is arranged on the flushing main pipe, and a plurality of flushing pipes are communicated with the flushing main pipe; the plurality of flushing pipes are respectively arranged along the junction of the two pool walls at the plurality of slopes and are fixedly connected with the pool walls; the lower part of the flushing pipe is respectively provided with two flushing branch pipes, and the two flushing branch pipes are respectively arranged along the junction of the slope surface and the two pool walls; a row of small holes are arranged on the flushing branch pipe, and the openings of the small holes face the surface of the slope. The invention adds the slopes at the four corners of the primary sedimentation area, and arranges the washing branch pipes at the slopes, so that the sludge accumulated in the area can be washed into the working range of the mud scraper.

Description

Follow-on high-density pond

Technical Field

The invention relates to the field of sewage treatment, in particular to an improved high-density tank.

Background

In the field of sewage treatment, the treatment of sewage generally proceeds through the following stages: after sewage enters a sewage treatment plant, filtering the sewage through a coarse grating to remove large impurities; filtering the sewage through a fine grid to remove small impurities in the sewage; then the filtered sewage is treated correspondingly by a grit chamber, a biochemical tank, a high-density tank and a disinfection tank in sequence, and finally the sewage is discharged into a water body. Wherein the high-density tank mainly comprises a water inlet area, a mixed reaction area, a primary sedimentation area and an inclined tube sedimentation area, and solid sediments in the sewage in the primary sedimentation area are settled to the bottom of the tank under the action of gravity.

The water inlet has between mixed reaction district and the preliminary sedimentation district, and the water entering preliminary sedimentation district in mixed reaction district is divided into two through the wall body water inlet, but in the actual motion, often appears, and a full load or even overload of two water inlets, and the problem that another water inlet inflow is few, because another inflow is few, consequently easy mud jam, do not go out mud, cause the sedimentation effect not good to influence out water quality of water and on-the-spot sense organ.

Solid sediment in the preliminary sedimentation district is got rid of through the mud scraper, but the four corners in preliminary sedimentation district is the blind area of mud scraper, consequently leads to this region to appear mud a large amount of piles up for a long time, and bold mud conglobation come-up is discharged along with the play water, seriously influences out water quality of water to can block up the worry hole in preliminary sedimentation district.

In addition, a small amount of scum, foam and a part of floating sludge particles float on the surface of the primary sedimentation area. For the floaters, the floaters are collected and removed through the skimming pipe, the existing skimming pipe can only collect the floaters at the front end, the rear end area of the skimming device is a collecting blind area, and the floaters and the floating sludge are easy to accumulate at the rear end of the skimming device to influence the overall sense of the pool surface. The cleaning is carried out through a manual fishing mode, time and labor are wasted, and the cleaning effect is not good. The existing skimming pipe has low skimming efficiency, the removal of floaters in a single tank body needs about ten minutes once, the efficiency is low, the loss of water for biochemical treatment can be caused, and the economic benefit is seriously influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the technical problems to be solved by the invention are as follows: four corners of the preliminary sedimentation area are dead areas of the mud scraper, but a large amount of mud is accumulated in the area for a long time, and the filter holes of the deep bed filter tank can be blocked.

In order to solve the technical problems, the invention adopts the following technical scheme: an improved high-density pond comprises a water inlet area, a mixed reaction area, a primary sedimentation area and an inclined tube sedimentation area; the bottom parts of the water inlet area, the mixed reaction area, the preliminary sedimentation area and the inclined tube sedimentation area are sequentially communicated; a water inlet is arranged between the mixed reaction zone and the preliminary sedimentation zone; the water inlet is divided into two parts through a wall body, a half pool wall is arranged on the right side of the water inlet and is parallel to the left and right pool walls of the preliminary sedimentation area, the half pool wall is fixedly connected with the pool bottom of the preliminary sedimentation area and the front and rear pool walls, and the upper end of the half pool wall is lower than the upper end of the pool wall of the preliminary sedimentation area.

Still include and prevent sludge deposit structure, prevent sludge deposit structure includes a plurality of slopes and washes the house steward.

The slopes are respectively arranged at the junctions of the two adjacent vertical tank walls and the tank bottom, and in specific implementation, two slopes are respectively arranged at two corners of the bottom of the right side of the half tank wall; and two wall corners on the right side of the primary settling zone are respectively provided with two slopes.

The flushing main pipe is provided with a water inlet valve and is communicated with a plurality of flushing pipes.

The plurality of flushing pipes are respectively arranged along the junction of the two vertical pool walls at the plurality of slopes and are fixedly connected with the pool walls; the flushing pipe is provided with two flushing branch pipes respectively, and the two flushing branch pipes are arranged along the junction of the slope surface and the two pool walls respectively, namely the two flushing branch pipes and the flushing pipe correspondingly connected form a Y-shaped structure.

A row of small holes are formed in the washing branch pipe, and the openings of the small holes face the surface of the slope.

In the invention, when the mud scraper operates, sludge at four corners of a primary sedimentation area where the mud scraper is located is difficult to remove, slopes are arranged at the four corners of the primary sedimentation area, and the vertical included angle formed by the bottom of the right side of the half pool wall and the bottom of the primary sedimentation area is replaced by the slope surface through the slope arrangement.

If a small part of sludge fails to slide down along the slope surface, the water inlet valve on the flushing main pipe is opened, and reclaimed water flows in from the flushing main pipe and then flows into the plurality of flushing pipes, flows out from a row of small holes on the plurality of flushing pipes, flushes the slope, and flushes the sludge on the slope to the working range of the sludge scraper.

Preferably, the slag skimming machine further comprises a skimming structure, wherein the skimming structure comprises a skimming pipe, and the skimming pipe comprises a skimming pipe body, a shell, a skimming pipe motor, a speed reducing mechanism, a turbine screw lifter, a screw and a plurality of long grooves.

The skimming pipe body is of a circular pipe structure, and a plurality of long grooves are formed in two sides of the skimming pipe body in the radial direction; in specific implementation, the heights and the lengths of the plurality of long grooves are equal, and the distances between two adjacent long grooves are equal; the height of the long grooves is between one fifth and one fourth of the diameter of the skimming pipe body; the number of the long grooves on one side along the radial direction of the skimming pipe body is multiple, the number of the long grooves on the other side of the skimming pipe body is one, the long grooves are arranged at the front end of the skimming pipe body, the left side area is large, the number of floaters is large, and the floaters on the left pool surface of the skimming pipe body can be removed more quickly by arranging the long grooves; the right side area is smaller, and the floating objects on the right side pool surface of the skimming pipe body can be removed by arranging the long groove.

The skimming pipe comprises a skimming pipe body and is characterized in that the two ends of the skimming pipe body are both provided with the shell, the two ends of the skimming pipe body respectively penetrate through the shell and are rotatably connected with the shell through bearings, and the motor of the skimming pipe is arranged in the shell. During specific implementation, the skimming pipe motor is arranged on a fixing block inside the shell, and the fixing block is fixedly connected to the bottom surface inside the shell. And the rotating shaft of the skimming pipe motor is fixedly connected with the skimming pipe body through a speed reducing mechanism. The turbine lead screw lifter is arranged in the shell, and in specific implementation, the turbine lead screw lifter is arranged on one side of a fixed block in the shell and is fixedly connected with the bottom of the shell; the number of the turbine screw rod lifters and the number of the screw rods are two, and the turbine screw rod lifters and the screw rods are respectively arranged at two ends of the skimming pipe body in the length direction.

The top of the screw penetrates through the shell, and the screw is in sliding connection with the shell; the turbine lead screw lifter is in threaded connection with the lead screw.

The skimming pipe is arranged at the right part of the primary settling zone. When the skimming pipe is used for skimming, the lower notch of the long groove is positioned at the position which is more than 2mm-5mm below the sewage surface of the primary sedimentation area.

When the automatic skimming pipe is used, the turbine screw rod lifter drives the skimming pipe body to move to the horizontal plane, when suspended matters on the left side of the automatic skimming pipe are collected and removed, the skimming pipe motor drives the speed reducing mechanism to act, and the speed reducing mechanism drives the output shaft and the skimming pipe body fixed on the output shaft to rotate; a plurality of long grooves on the left side of the skimming pipe body can be used for properly collecting and removing suspended matters on the surface of the tank; when suspended matters on the right side of the automatic skimming pipe are collected and removed, the skimming pipe motor drives the gear shaft to rotate, and the gear shaft drives the gear to rotate, so that the output shaft and a skimming pipe body fixed on the output shaft are driven to rotate; so that the right long groove on the skimming pipe body can just collect and remove suspended matters on the surface of the tank.

Preferably, in order to reduce the rotational speed of the skimmer tube motor, the reduction mechanism includes a reduction housing, a gear shaft, an output shaft, and a gear. The speed reduction shell is arranged inside the shell, and the speed reduction shell is fixedly connected with the bottom of the shell. The two ends of the gear shaft penetrate through the speed reduction shell respectively, and the two ends of the gear shaft are rotatably connected with the two sides of the speed reduction shell through bearings respectively. The two ends of the output shaft penetrate through the speed reduction shell respectively, and the two ends of the output shaft are rotatably connected with the two sides of the speed reduction shell through bearings respectively. The gear is arranged on the output shaft and is fixedly connected with the output shaft through a flat key; the teeth on the gear are meshed with the teeth on the gear shaft. The number of teeth of the gear is larger than that of the gear shaft. The skimming pipe comprises an output shaft, a skimming pipe motor, a skimming pipe body, a gear shaft, a skimming pipe motor, a skimming pipe body, a skimming pipe motor, a gear shaft, an output shaft and a gear shaft, wherein the output shaft and the gear shaft are arranged in parallel, one end of the gear shaft is fixedly connected with the rotating shaft of the skimming pipe motor, the gear shaft and the rotating shaft of the skimming pipe motor are positioned on the same axis, one end of the output shaft is fixedly connected with the skimming pipe body, and the output shaft and the skimming pipe body are positioned on the same axis. The speed reducing mechanism is simple in structure, convenient to install and low in use and maintenance cost.

Preferably, the automatic skimming control device further comprises an automatic skimming control structure, wherein the automatic skimming control structure comprises a single chip microcomputer, a third time relay, a fourth time relay and a liquid level sensor; the third time relay is arranged in a power supply loop of the skimming pipe motor, and the fourth time relay is arranged in a power supply loop of the turbine screw lifter; the detection end of the liquid level sensor is arranged at the bottom of the outer side of the skimming pipe body, and the signal input end of the liquid level sensor is connected with the liquid level signal input end of the single chip microcomputer; and the first control signal output end and the second control signal output end of the single chip microcomputer are respectively connected with the skimming pipe motor and the turbine screw rod lifter. The timing start and stop of the motor and the turbine screw lifter can be realized through the time relay, so that automatic skimming can be realized.

Preferably, the slag flushing device further comprises a slag flushing structure, wherein the slag flushing structure comprises a slag flushing main pipe, and a first slag flushing pipe and a second slag flushing pipe are communicated with the slag flushing main pipe. The first slag flushing pipe is arranged at the upper end of the left pool wall of the preliminary sedimentation area and is parallel to the skimming pipe body, a water inlet valve is arranged at the water inlet end of the first slag flushing pipe, a row of small holes are formed in the first slag flushing pipe, and the openings of the small holes face to the lower right, namely the pool surface of the preliminary sedimentation area; when the automatic skimming pipe is specifically implemented, the water inlet valve is opened, the reclaimed water enters the first skimming pipe, the reclaimed water is discharged from the row of small holes, the reclaimed water drops on the surface of the pool to cause a circle of fine waves, and floaters on the surface of the sewage on the left side of the automatic skimming pipe are flushed into the skimming pipe body through the long groove.

The second flushing slag pipe is arranged on the right side of the skimming pipe body and is perpendicular to the skimming pipe body, the second flushing slag pipe is fixed to the upper end of the rear side pool wall of the primary settling area, a water inlet valve is arranged at one end of the second flushing slag pipe, a row of small holes are formed in the second flushing slag pipe, and the opening direction of the small holes is the left lower side, namely the pool surface of the primary settling area. When the automatic skimming device is specifically implemented, the water inlet valve is opened, the reclaimed water enters the second skimming pipe, the reclaimed water is discharged from the row of small holes, the reclaimed water drops on the surface of the pool to cause a circle of fine waves, and floaters on the surface of the sewage on the right side of the automatic skimming pipe are flushed into the skimming pipe body through the long grooves.

Preferably, the device also comprises a water outlet anti-blocking structure; the water outlet anti-blocking structure comprises a water outlet anti-blocking shell, a first motor, a transmission device and a flow impeller. The right end of the water outlet anti-blocking shell is provided with a rectangular long groove; a first fixing plate is fixedly arranged in the water outlet anti-blocking shell, and a second fixing plate and a third fixing plate are sequentially and respectively fixedly arranged below the first fixing plate; the bottom of the water outlet anti-blocking shell is provided with a double-rod hydraulic cylinder, the cylinder body of the double-rod hydraulic cylinder is fixedly connected with the shell, and the double-rod hydraulic cylinder is arranged in the front-back direction; during the concrete implementation, the bottom of a pool in mixed reaction district is fixed in respectively through the staple bolt in the piston rod both ends of two pole pneumatic cylinders for the piston rod of two pole pneumatic cylinders is parallel with mixed reaction district bottom of a pool, it prevents stifled casing left side hugs closely on the pond wall of the water inlet opposite face between mixed reaction district and the preliminary sedimentation district to go out the water.

The first motor is fixedly arranged on the first fixing plate, an output shaft of the first motor penetrates through the first fixing plate, and the output shaft of the first motor is rotatably connected with the first fixing plate through a bearing.

The transmission device comprises a speed reducer, a first bevel gear, a second bevel gear, a connecting shaft and a hydraulic cylinder.

The speed reducer is arranged on the second fixing plate and is fixedly connected with the second fixing plate; the input shaft of the speed reducer is fixedly connected with the output shaft of the first motor, and the input shaft of the speed reducer and the output shaft of the first motor are on the same axis.

An output shaft of the speed reducer penetrates through the third fixing plate, and is rotatably connected with the third fixing plate through a bearing; and the shaft end of the output shaft of the speed reducer is fixedly connected with a first bevel gear.

The upper end of the connecting shaft penetrates through the third fixing plate, and the connecting shaft is rotatably connected with the third fixing plate through a bearing; the lower end of the connecting shaft is rotatably connected with the bottom surface in the water outlet anti-blocking shell through a bearing.

The second bevel gear is fixedly connected to the upper end of the connecting shaft and meshed with the first bevel gear.

The left end of the hydraulic cylinder penetrates through a rectangular long groove at the right end of the water outlet anti-blocking shell, and the left end of the cylinder body of the hydraulic cylinder is fixedly connected to the connecting shaft.

The impeller comprises a second motor, a protective cover, a rotating block and a plurality of blades.

The safety cover is right-hand member opening left end confined semi-enclosed construction, just the opening of safety cover right-hand member is towards the water inlet between the mixed reaction zone in high-density pond and the preliminary sedimentation district.

The second motor casing passes through the center of the protection cover, and the right end of the second motor casing is fixedly connected with the protection cover.

And the left end of the second motor shell is fixedly connected with one end of a hydraulic rod of the hydraulic cylinder.

And the output shaft of the second motor is fixedly connected with the rotating block.

One ends of the blades are fixedly connected to the rotating block respectively, and the blades are perpendicular to the output shaft of the second motor. In specific implementation, the protective cover is of a cylindrical structure; the blades are arranged inside the protective cover. The number of the plurality of blades is three, and the included angle between the plurality of blades is 120 degrees.

When the device is implemented specifically, the shell fixes the first motor, the speed reducer and the connecting shaft through the first connecting plate, the second connecting plate and the third connecting plate, and the first motor, the speed reducer, the first bevel gear, the second bevel gear, the connecting shaft and the hydraulic cylinder are sequentially connected, so that the first motor rotates to drive the hydraulic cylinder to rotate, the flow pushing device is driven to rotate, and the hydraulic rod moves in a telescopic mode, so that the flow pushing device is driven to move; the second motor rotates and drives the rotating block to rotate, so that the plurality of blades on the rotating block are driven to rotate, the plurality of blades stir the sewage to form a rotational flow to push the sewage to flow, and the diversion effect is achieved.

Preferably, the device also comprises a water outlet anti-blocking automatic control structure, wherein the water outlet anti-blocking automatic control structure comprises a first part and a second part

Two time relays; the first time relay is arranged in a power supply loop of the first motor, and the second time relay is arranged in a power supply loop of the second motor; and the third, fourth, fifth and sixth control signal output ends of the single chip microcomputer are respectively connected with the first motor, the second motor, the hydraulic cylinder and the double-rod hydraulic cylinder. The timing start and stop of the first motor and the second motor can be realized through the time relay, so that automatic control can be realized.

Preferably, the water used in the sluicing main pipe and the flushing main pipe is reclaimed water for saving cost.

Preferably, in order to prevent the primary settling zone from effectively settling the reclaimed water after dropping, the system also comprises a slag flushing automatic control structure, and the slag flushing automatic control structure comprises a fifth time relay; the fifth time relay is arranged in a power supply loop of the water inlet valve of the flushing main pipe; and a seventh control signal output end of the singlechip is connected with a water inlet valve of the flushing main pipe. The timing start and stop of the water inlet valve can be realized through the third time relay, so that the automatic control can be realized.

Compared with the prior art, the invention has at least the following advantages:

1. reduce the mud scraping blind area. The slope is added to the blind area of the mud scraper for the four corners of the preliminary sedimentation zone, and the flushing pipe is arranged on the slope, so that the sludge in the blind area can be flushed by the flushing pipe in the working range of the mud scraper, and the problem that the deep bed filter is blocked due to the fact that a large amount of sludge is accumulated in the mud scraping blind area for a long time is solved.

2. The skimming efficiency is high, the loss of the treated water is small, and the economic benefit is increased. The size of the space for the floating objects to enter the skimming pipe is controlled by adjusting the upper and lower positions of the skimming pipe and the rotating direction of the skimming pipe, so that the floating objects can properly enter the skimming pipe, and the treated water can enter the skimming pipe in the minimum amount; still through addding two towards the sediment pipe for the floater of skimming pipe both sides can be quick gets into the skimming pipe, reduces the skimming time.

3. Reduce the blind area of collection, increase the clearance of pond surface floater. An opening is additionally arranged at the rear end of the skimming pipe, and the floating materials at the rear end of the skimming pipe are controlled to enter the skimming pipe through the rotating direction of the skimming pipe, so that the floating materials at the rear-end blind area can be removed.

4. The difference of the water inflow of the two water inlets is reduced, and the water inlets cannot be blocked. Through the action of the anti-blocking structure of going out water, the water inlet that the inflow is little in two water inlets pushes away the flow for the inflow difference of two water inlets diminishes, increases the work efficiency of two water inlets, and a plurality of blades also make sewage flash mixed under the drive of second motor, can not deposit and cause the water inlet to block up in the department of intaking.

5. The plug flow range is wide, and dead angles are few. The flow pusher in the water outlet anti-blocking structure rotates for 180 degrees, thereby enlarging the flow pushing range of the flow pusher and reducing the flow pushing dead angle. The plug flow effect is higher. The rear end of the flow pusher is additionally provided with a hydraulic cylinder, so that one end far away from the flow pusher can also have certain thrust to push sewage.

Drawings

Fig. 1 is a schematic overall structure diagram of the embodiment.

Fig. 2 is an enlarged view at G in fig. 1.

Fig. 3 is a sectional view of the entire structure of the embodiment.

Fig. 4 is a perspective view of an automatic skimmer tube.

Fig. 5 is a left side view of the automatic skimmer tube.

Fig. 6 is a perspective view of the water outlet anti-blocking structure.

Fig. 7 is a left side view of the water outlet anti-blocking structure.

Fig. 8 is a sectional view of the speed reducing mechanism.

In the figure, 100-mixed reaction zone, 110-water inlet; 120-water outlet anti-blocking shell, 121-rectangular long groove, 122-first fixing plate, 123-second fixing plate, 124-third fixing plate, 125-double-rod hydraulic cylinder and 130-first motor; 140-transmission device, 141-speed reducer, 142-first bevel gear, 143-second bevel gear, 144-connecting shaft, 145-hydraulic cylinder; 150-impeller, 151-second motor, 152-protective cover, 153-turning block, 154-blade; 200-preliminary sedimentation zone, 210-half pool wall, 220-slope; 240-an automatic skimming pipe, 241-a skimming pipe body, 242-a shell, 243-a skimming pipe motor, 244-a speed reducing mechanism, 245-a turbine screw rod lifter, 246-a screw rod and 247-a long groove; 251-a first slag flushing pipe, 252-a second slag flushing pipe, 260-a flushing pipe and 261-a flushing branch pipe; 41-reduction housing, 42-gear shaft, 43-output shaft, 44-gear.

Detailed Description

The present invention is described in further detail below.

In the present invention, 'front', 'rear', 'left', 'right', 'up', 'down' all refer to the orientation in fig. 1, wherein 'front' refers to being out with respect to the paper in fig. 1 and 'rear' refers to being in fig. 1. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-8, one embodiment of the present invention is provided: an improved high-density pond comprises a water inlet area, a mixed reaction area 100, a primary settling area 200 and an inclined tube settling area; the water inlet area, the mixed reaction area 100, the preliminary sedimentation area 200 and the bottom of the inclined tube sedimentation area are communicated in sequence; a water inlet 110 is arranged between the mixing reaction zone 100 and the preliminary sedimentation zone 200; the water inlet 110 is divided into two parts by a wall body, a half pool wall 210 is arranged on the right side of the water inlet 110, the half pool wall 210 is parallel to the left and right pool walls of the preliminary sedimentation zone 200, the half pool wall 210 is fixedly connected with the pool bottom and the front and rear pool walls of the preliminary sedimentation zone 200, and the upper end of the half pool wall 210 is lower than the upper end of the pool wall of the preliminary sedimentation zone 200.

Also included is an anti-sludge-settling structure comprising a plurality of ramps 220 and a flushing header.

The slopes 220 are respectively arranged at the junctions of the two adjacent vertical pool walls and the pool bottom, and in specific implementation, two slopes 220 are respectively arranged at two corners of the bottom of the right side of the half pool wall 210; two slopes 220 are respectively arranged at two corners of the right side of the primary sedimentation area 200.

The flushing main pipe is provided with a water inlet valve and is communicated with a plurality of flushing pipes 260.

The plurality of flushing pipes 260 are respectively arranged along the junction of the two vertical pool walls at the plurality of slopes 220 and are fixedly connected with the pool walls; the flushing pipe 260 is provided with two flushing branch pipes 261 at the lower part, and the two flushing branch pipes 261 are respectively arranged along the junction of the surface of the slope 220 and the two pool walls.

The branch irrigation pipe 261 is provided with a row of small holes, and the openings of the small holes face the surface of the slope 220.

In the invention, when the mud scraper operates, sludge at four corners of a primary sedimentation area where the mud scraper is located is difficult to remove, at the moment, the slopes 220 are arranged at the four corners of the primary sedimentation area, and through the arrangement of the slopes 220, a vertical included angle formed by the bottom of the right side of the half pool wall 210 and the bottom of the primary sedimentation area 200 is replaced by the slope surface, and because the sludge cannot be stopped on the slope surface, the sludge naturally slides down along the slope 220 surface and enters the mud scraping range of the mud scraper, thereby avoiding the accumulation of the sludge as much as possible. If a small amount of sludge does not slide down along the surface of the slope 220, only the water inlet valve on the flushing header pipe is opened, and reclaimed water flows in from the flushing header pipe and then flows into the plurality of flushing pipes 260, flows out from a row of small holes on the plurality of flushing pipes 260, flushes the slope 220 and flushes the sludge on the slope to the working range of the mud scraper.

Further, the slag skimming structure is also included. The skimming structure includes a skimming tube 240, and the skimming tube 240 includes a skimming tube body 241, a housing 242, a skimming tube motor 243, a speed reducing mechanism 244, a turbine screw lifter 245, a screw 246, and a plurality of elongated slots 247.

The skimming pipe body 241 is of a circular pipe structure, and a plurality of long grooves 247 are formed on two sides of the skimming pipe body 241 in the radial direction; in specific implementation, the heights and lengths of the plurality of long grooves 247 are equal, and the distances between two adjacent long grooves 247 are equal; the height of the long grooves 247 is between one fifth and one fourth of the diameter of the skimmer tube body 241; the number of the long grooves 247 on one side in the radial direction of the skimming pipe body 241 is multiple, the number of the long grooves 247 on the other side of the skimming pipe body 241 is one, the long grooves are arranged at the front end of the skimming pipe body 241, the left side area is large, the number of floaters is large, and the floaters on the left pool surface of the skimming pipe body 241 can be removed more quickly by arranging the long grooves 247; the right side has a smaller area, and the floating materials on the right side pool surface of the skimming pipe body 241 can be removed by arranging the long groove 247.

The two ends of the skimming pipe body 241 are both provided with the shell 242, and the two ends of the skimming pipe body 241 respectively penetrate through the shell 242 and are rotatably connected with the shell 242 through bearings.

The skimmer tube motor 243 is disposed within the housing 242. In specific implementation, the skimmer tube motor 243 is disposed on a fixed block inside the housing 242, and the fixed block is fixedly connected to the bottom surface inside the housing 242.

The rotating shaft of the skimmer tube motor 243 is fixedly connected with the skimmer tube body 241 through a speed reducing mechanism 244. The turbine screw rod lifter 245 is arranged in the shell 242, and in specific implementation, the turbine screw rod lifter 245 is arranged on one side of a fixed block in the shell 242, and the turbine screw rod lifter 245 is fixedly connected with the bottom of the shell 242; the number of the turbine screw lifters 245 and the number of the screws 246 are two, and the turbine screw lifters and the screws are respectively arranged at two ends of the skimming pipe body 241 in the length direction. The top of the screw 246 penetrates through the housing 242, and the screw 246 is slidably connected with the housing 242, in specific implementation, the lower end of the screw 246 is vertically and fixedly connected to the bottom of the tank, and the upper end of the screw 246 is fixedly connected to the tank wall at the top of the tank; the turbine screw lifter 245 is threadedly connected to the screw 246.

The skimmer pipe 240 is provided in a right portion of the preliminary settling zone 200. When the skimming pipe 240 is used for skimming, the lower notch of the long groove 247 is located more than 2mm to 5mm below the surface of the sewage in the preliminary sedimentation zone 200.

Further, in order to reduce the rotation speed of the skimmer tube motor 243, the reduction mechanism 244 includes a reduction housing 41, a gear shaft 42, an output shaft 43, and a gear 44. The speed reducing housing 41 is disposed inside the housing 242, and the speed reducing housing 41 is fixedly connected to the bottom of the housing 242. Two ends of the gear shaft 42 respectively penetrate through the speed reduction housing 41, and two ends of the gear shaft 42 are respectively rotatably connected with two sides of the speed reduction housing 41 through bearings. Two ends of the output shaft 43 respectively penetrate through the speed reduction housing 41, and two ends of the output shaft 43 are respectively rotatably connected with two sides of the speed reduction housing 41 through bearings. The gear 44 is arranged on the output shaft 43, and the gear 44 is fixedly connected with the output shaft 43 through a flat key; the teeth on the gear 44 mesh with the teeth on the gear shaft 42. The number of teeth of the gear 44 is greater than that of the gear shaft 42. The output shaft 43 is arranged in parallel with the gear shaft 42, one end of the gear shaft 42 is fixedly connected with the rotating shaft of the skimmer tube motor 243, and the gear shaft 42 and the rotating shaft of the skimmer tube motor 243 are on the same axis. One end of the output shaft 43 is fixedly connected with the skimming pipe body 241, and the output shaft 43 and the skimming pipe body 241 are positioned on the same axis.

In specific implementation, the turbine screw lifter 245 drives the skimming pipe body 241 to move to a horizontal plane, when suspended matters on the left side of the automatic skimming pipe are collected and removed, the skimming pipe motor 243 drives the speed reducing mechanism 244 to act, and the speed reducing mechanism 244 drives the output shaft and the skimming pipe body 241 fixed on the output shaft to rotate; so that the plurality of long grooves 247 on the left side of the skimming pipe body 241 can just collect and remove suspended matters on the pool surface; when the suspended matters on the right side of the automatic skimming pipe are collected and removed, the skimming pipe motor 243 drives the gear shaft to rotate, and the gear shaft drives the gear to rotate, so that the output shaft and the skimming pipe body 241 fixed on the output shaft are driven to rotate; so that the right elongated slot 247 on the skimming tube body 241 can just collect and remove the suspended matters on the pool surface.

Further, the slag flushing device further comprises a slag flushing structure, wherein the slag flushing structure comprises a slag flushing main pipe, and a first slag flushing pipe 251 and a second slag flushing pipe 252 are communicated with the slag flushing main pipe. The first slag flushing pipe 251 is arranged at the upper end of the left pool wall of the preliminary sedimentation zone 200, the first slag flushing pipe 251 is fixedly connected with the pool walls at the front side and the rear side and is parallel to the skimming pipe body 241, a water inlet valve is arranged at the water inlet end of the first slag flushing pipe 251, a row of small holes are formed in the first slag flushing pipe 251, and the openings of the small holes face to the lower right; in specific implementation, the water inlet valve is opened, reclaimed water enters the first slag flushing pipe 251, the reclaimed water is discharged from the row of small holes, the reclaimed water drops on the pool surface to cause a circle of fine waves, and floaters on the sewage surface on the left side of the automatic slag skimming pipe 240 are flushed into the slag skimming pipe body 241 through the long groove 247.

The second slag flushing pipe 252 is arranged on the right side of the skimming pipe body 241 and is perpendicular to the skimming pipe body 241, the second slag flushing pipe 252 is fixed to the upper end of the rear side pool wall of the preliminary sedimentation zone 200, a water inlet valve is arranged at one end of the second slag flushing pipe 252, a row of small holes are formed in the second slag flushing pipe 252, and the opening direction of the small holes is the left lower side. In specific implementation, the water inlet valve is opened, reclaimed water enters the second flushing slag pipe 252, the reclaimed water is discharged from the row of small holes, the reclaimed water drops on the pool surface to cause a circle of fine waves, and floaters on the sewage surface on the right side of the automatic skimming pipe 240 are flushed into the skimming pipe body 241 through the long groove 247.

Further, the device also comprises a water outlet anti-blocking structure; the water outlet anti-blocking structure comprises a water outlet anti-blocking shell 120, a first motor 130, a transmission device 140 and a flow pusher 150. A rectangular long groove 121 is formed at the right end of the water outlet anti-blocking shell 120; a first fixing plate 122 is fixedly arranged in the outlet anti-blocking shell 120, and a second fixing plate 123 and a third fixing plate 124 are sequentially and respectively fixedly arranged below the first fixing plate 122; the bottom of the water outlet anti-blocking shell 120 is provided with a double-rod hydraulic cylinder 125, the body of the double-rod hydraulic cylinder 125 is fixedly connected with the shell 120, and the double-rod hydraulic cylinder 125 is arranged in the front-back direction; during specific implementation, the piston rod both ends of two pole pneumatic cylinders 125 are fixed in the bottom of the pool of mixed reaction zone 100 respectively through the staple bolt for the piston rod of two pole pneumatic cylinders 125 is parallel with mixed reaction zone bottom of the pool, it prevents stifled casing 120 left side hugs closely on the pond wall of the water inlet between mixed reaction zone and the preliminary sedimentation zone is opposite.

The first motor 130 is fixedly disposed on the first fixing plate 122, an output shaft of the first motor 130 penetrates through the first fixing plate 122, and the output shaft of the first motor 130 is rotatably connected to the first fixing plate 122 through a bearing. The transmission 140 includes a reducer 141, a first bevel gear 142, a second bevel gear 143, a connecting shaft 144, and a hydraulic cylinder 145.

The speed reducer 141 is arranged on the second fixing plate 123 and is fixedly connected with the second fixing plate 123; the input shaft of the speed reducer 141 is fixedly connected with the output shaft of the first motor 130, and the input shaft of the speed reducer 141 and the output shaft of the first motor 130 are on the same axis. An output shaft of the speed reducer 141 penetrates through the third fixing plate 124, and the output shaft of the speed reducer 141 is rotatably connected with the third fixing plate 124 through a bearing; a first bevel gear 142 is fixedly connected to a shaft end of an output shaft of the speed reducer 141.

The upper end of the connecting shaft 144 penetrates through the third fixing plate 124, and the connecting shaft 144 and the third fixing plate 124 are rotatably connected through a bearing; the lower end of the connecting shaft 144 is rotatably connected with the inner bottom surface of the water outlet anti-blocking housing 120 through a bearing. The second bevel gear 143 is fixedly connected to the upper end of the connecting shaft 144, and the second bevel gear 143 is engaged with the first bevel gear 142. The left end of the hydraulic cylinder 145 penetrates through the rectangular long groove 121 at the right end of the water outlet anti-blocking shell 120, and the left end of the cylinder body of the hydraulic cylinder 145 is fixedly connected to the connecting shaft 144. The impeller 150 includes a second motor 151, a protective cover 152, a rotating block 153, and a plurality of blades 154. The safety cover 152 is the semi-enclosed structure of right-hand member opening left end confined, just the opening of safety cover 152 right-hand member is towards the water inlet between the mixed reaction zone in high-density pond and the preliminary sedimentation zone. The second motor 151 housing passes through the center of the protective cover 152, and the right end of the second motor 151 housing is fixedly connected with the protective cover 152. The left end of the housing of the second motor 151 is fixedly connected with one end of a hydraulic rod of the hydraulic cylinder 145. The output shaft of the second motor 151 is fixedly connected with the rotating block 153. One end of each of the plurality of blades 154 is fixedly connected to the rotating block 153, and the plurality of blades 154 are perpendicular to the output shaft of the second motor 151. In specific implementation, the protective cover 152 is a cylindrical structure; the plurality of blades 154 are disposed inside the protective cover 152. The number of the plurality of blades 154 is three, and an included angle between the plurality of blades 154 is 120 °

In specific implementation, the water outlet anti-blocking shell 120 fixes the first motor 130, the speed reducer 141 and the connecting shaft 144 through the first connecting plate 122, the second connecting plate 123 and the third connecting plate 124, and the first motor 130, the speed reducer 141, the first bevel gear 142, the second bevel gear 143, the connecting shaft 144 and the double-rod hydraulic cylinder 125 are sequentially connected, so that the first motor 130 rotates to drive the double-rod hydraulic cylinder 1215 to rotate, thereby driving the flow pusher 150 to rotate, and the double-rod hydraulic cylinder 125 moves in a telescopic manner, thereby driving the flow pusher 150 to move; the second motor 151 rotates to drive the rotating block 153 to rotate, so as to drive the plurality of blades 154 on the rotating block 153 to rotate, and the plurality of blades 154 agitate the sewage to form a rotational flow to push the sewage to flow, thereby playing a role in guiding the flow.

Further, in order to save cost, the water used in the slag flushing main pipe and the flushing main pipe is reclaimed water.

The automatic control device further comprises an automatic control structure, wherein the automatic control structure comprises a single chip microcomputer, five time relays and a liquid level sensor;

a first time relay is arranged in the power supply circuit of the first motor 130, and a second time relay is arranged in the power supply circuit of the second motor 151; the third time relay is arranged in a power supply loop of the skimmer tube motor 243, and the fourth time relay is arranged in a power supply loop of the turbine screw lifter 245; the third time relay is arranged in a power supply loop of the water inlet valve of the flushing main pipe; the detection end of the liquid level sensor is arranged at the bottom of the outer side of the skimming pipe body 241, and the signal input end of the liquid level sensor is connected with the liquid level signal input end of the single chip microcomputer;

the first control signal output end and the second control signal output end of the single chip microcomputer are respectively connected with the skimming pipe motor 243 and the turbine screw rod lifter 245, the third control signal output end, the fourth control signal output end, the fifth control signal output end and the sixth control signal output end of the single chip microcomputer are respectively connected with the first motor 130, the second motor 151, the hydraulic cylinder 35 and the double-rod hydraulic cylinder 14, and the seventh control signal output end of the single chip microcomputer is connected with a water inlet valve of a flushing main pipe.

The working principle of the improved high-density tank defined by the invention is as follows:

prevent mud deposit structure:

during manual control, when the mud scraper operates, the water inlet valve on the flushing main pipe is opened, reclaimed water flows in from the flushing main pipe and then flows into the plurality of flushing pipes 260, flows out from a row of small holes on the plurality of flushing pipes 260, flushes the slope 220, flushes sludge on the slope 220 to the working range of the mud scraper, closes the water inlet valve on the flushing main pipe after flushing of the sludge on the slope 220 is completed, waits for the next operation of the mud scraper, and repeats the steps.

During automatic control, when the mud scraper operates, the water inlet valve on the flushing main pipe is controlled to be opened by the single chip microcomputer, reclaimed water flows in from the flushing main pipe and then flows into the plurality of flushing pipes 260, flows out from a row of small holes on the plurality of flushing pipes 260, flushes the slope 220, and flushes the sludge on the slope 220 to the working range of the mud scraper; meanwhile, the time relay starts to time, after a period of time, the time relay finishes the timing, the single chip microcomputer controls the water inlet valve on the flushing main pipe to be closed, the next operation of the mud scraper is waited, and the steps are repeated.

Skimming structure and flushing structure:

during manual control, a switch of the turbine lead screw lifter 245 is turned on, the turbine lead screw lifter 245 drives the skimming pipe body 241 to move to a proper position of the pool surface, and then the switch of the turbine lead screw lifter 245 is turned off, so that a plurality of long grooves 247 on the left side of the skimming pipe body 241 can be used for properly collecting and removing suspended matters on the pool surface on the left side of the skimming pipe body 241; meanwhile, a water inlet valve on the first slag flushing pipe 251 is opened, reclaimed water enters the first slag flushing pipe 251 and is discharged from a row of small holes, the reclaimed water drops on the surface of the pool to cause a circle of fine waves, floaters on the surface of sewage on the left side of the automatic slag skimming pipe 240 are flushed into the skimming pipe body 241 through the long groove 247, after a period of time and after the suspended matters on the left pool surface are completely removed, the water inlet valve on the first slag flushing pipe 251 is closed, a switch of a skimming pipe motor 243 is opened, the skimming pipe motor 243 operates, the skimming pipe motor 243 drives the skimming pipe body 241 to move to a proper position on the pool surface through a speed reducing mechanism 244, and the right long groove 247 on the skimming pipe body 241 can properly collect and remove the suspended matters on the right pool surface of the skimming pipe body 241; meanwhile, a water inlet valve on the second slag flushing pipe 252 is opened, reclaimed water enters the second slag flushing pipe 252 and is discharged from a row of small holes, the reclaimed water drops on the surface of the pool to cause a circle of fine waves, floaters on the surface of sewage on the right side of the automatic skimming pipe 240 are flushed into the skimming pipe body 241 through the long groove 247, after suspended matters are completely removed, the water inlet valve on the second slag flushing pipe 252 is closed, and the turbine screw lifter 245 and the skimming pipe motor 243 are controlled to return to the initial positions through a switch of the turbine screw lifter 245 and a switch of the skimming pipe motor 243.

During automatic control, the liquid level sensor transmits acquired signals to the single chip microcomputer, the single chip microcomputer controls the turbine screw rod lifter 245 to act according to the signals acquired by the liquid level sensor, the skimming pipe body 241 is driven to move to a proper position of the tank surface, a plurality of long grooves 247 on the left side of the skimming pipe body 241 can be used for properly acquiring and removing suspended matters on the tank surface on the left side of the skimming pipe body 241, meanwhile, a time relay starts timing, a water inlet valve of a first skimming pipe 251 controlled by the single chip microcomputer is opened, medium water enters the first skimming pipe 251 and is discharged from a row of small holes, the medium water drops on the tank surface to cause a circle of fine waves, floaters on the sewage surface on the left side of the automatic skimming pipe 240 are flushed into the skimming pipe body 241 through the long grooves 247, after the time of the time relay reaches a set time, the first skimming pipe 251 controlled by the single chip microcomputer is closed, and a water inlet valve 243 of the skimming pipe acts, the skimming pipe motor drives the skimming pipe body 241 to move to a proper position of the pool surface through speed reduction construction, so that suspended matters on the right pool surface of the skimming pipe body 241 can be collected and removed properly through a right long groove 247 on the skimming pipe body 241, meanwhile, a time relay starts timing, a water inlet valve on the second skimming pipe 252 is controlled to be opened through the single chip microcomputer, reclaimed water enters the second skimming pipe 252 and is discharged from a row of small holes, the reclaimed water drops on the pool surface to cause a circle of fine waves, floaters on the sewage surface on the right side of the automatic skimming pipe 240 are flushed into the skimming pipe body 241 through the long groove 247, after timing of the time relay is completed, the water inlet valve on the second skimming pipe 252 is controlled to be closed through the single chip microcomputer, and the skimming pipe motor 243 and the turbine screw lifter 245 return to the initial position.

Go out water anti-blocking structure:

during manual control: the second motor 151 is turned on, the second motor drives the rotating block 153 to rotate, so as to drive the plurality of blades 154 to rotate, then the first motor 130 is turned on, the first motor 130 is controlled to rotate forwards, the first motor 130 drives the hydraulic cylinder 145 to rotate through a transmission line of the speed reducer 141, the first bevel gear 142, the second bevel gear 143, the connecting shaft 144 and the hydraulic cylinder 145, so as to drive the flow pusher 150 to rotate on a horizontal plane by taking the connecting shaft 144 as an axis, when the flow pusher 150 rotates 180 degrees, the first motor 130 is controlled to rotate backwards, so that the flow pusher 150 returns to an initial position, then the first motor 130 is controlled to rotate forwards, and the above steps are repeated in a circulating manner. Thereby causing the flow pushing device 150 to push the sewage back and forth in a semicircular area.

The switch on the double-rod hydraulic cylinder 125 is opened, the double-rod hydraulic cylinder 125 acts to drive the water outlet anti-blocking shell 120 to move on the piston rod of the double-rod hydraulic cylinder 125, so that the forward and backward movement of the flow pusher 150 is realized, and the flow pusher 150 can be pushed alternately towards the directions of the two water inlets, so that the flow of the two water inlets is the same, the difference of the two water inlets is prevented from being too large, and the two water inlets are also prevented from being blocked. When the switch on the hydraulic cylinder 145 is turned on, the hydraulic cylinder 145 starts to act, so that the flow pushing device 150 is driven to move left and right, and the end far away from the flow pushing device 150 can have higher flow pushing force to push the sewage.

During automatic control: the singlechip controls the second time relay to start timing, controls the action of the double-rod hydraulic cylinder 125, and drives the water outlet anti-blocking shell 120 to move on the piston rod of the double-rod hydraulic cylinder 125, so that the forward and backward movement of the flow pusher 150 is realized, and the flow pusher 150 can alternately push the flow in the directions opposite to the two water inlets, so that the flow of the two water inlets is the same, the difference of the two water inlets is prevented from being too large, and the two water inlets are also prevented from being blocked. The hydraulic cylinder 145 is controlled to start to act, so that the flow pushing device 150 is driven to move left and right, and the end far away from the flow pushing device 150 can have higher flow pushing force to push the sewage.

The single chip microcomputer controls the first time relay to start timing, and at the same time, controls the first motor 130 to start forward rotation, the first motor 130 drives the hydraulic cylinder 145 to rotate through a transmission line of the speed reducer 141, the first bevel gear 142, the second bevel gear 143, the connecting shaft 144 and the hydraulic cylinder 145, so as to drive the flow pusher 150 to rotate, when the timing of the first time relay is finished, the flow pusher 150 just rotates 180 degrees, at the same time, controls the first motor 130 to rotate reversely, the first time relay starts a new round of timing, when the timing of the first time relay is finished, the flow pusher 150 just returns to an initial position, and then controls the first motor 130 to rotate forward, and at the same time, the first time relay starts a new round of timing again, and the steps are repeated in a cycle until the timing of the second time relay is finished. Thereby enabling the flow impeller 150 to push sewage back and forth in a semicircular area.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. An improved high-density pond comprises a water inlet area, a mixed reaction area (100), a primary settling area (200) and an inclined tube settling area; the water inlet area, the mixed reaction area (100), the primary sedimentation area (200) and the bottom of the inclined tube sedimentation area are communicated in sequence; a water inlet (110) is arranged between the mixing reaction zone (100) and the preliminary sedimentation zone (200); the water inlet (110) is divided into two parts through a wall body, a half pool wall (210) is arranged on the right side of the water inlet (110), the half pool wall (210) is parallel to the left and right pool walls of the primary sedimentation area (200), the half pool wall (210) is fixedly connected with the pool bottom, the front pool wall and the rear pool wall of the primary sedimentation area (200), and the upper end of the half pool wall (210) is lower than the upper end of the pool wall of the primary sedimentation area (200); the method is characterized in that: the system also comprises a sludge deposition prevention structure, wherein the sludge deposition prevention structure comprises a plurality of slopes (220) and a flushing header pipe;

the slopes (220) are respectively arranged at the junctions of two adjacent vertical pool walls and the pool bottom;

a water inlet valve is arranged on the flushing main pipe, and a plurality of flushing pipes (260) are communicated with the flushing main pipe;

the plurality of flushing pipes (260) are respectively arranged along the junction of two vertical pool walls at the plurality of slopes (220) and are fixedly connected with the pool walls; the lower part of the flushing pipe (260) is respectively provided with two flushing branch pipes (261), and the two flushing branch pipes (261) are respectively arranged along the junction of the surface of the slope (220) and the two pool walls;

the branch flushing pipe (261) is provided with a row of small holes, and the openings of the small holes face the surface of the slope (220).

2. An improved dense pond, as claimed in claim 1, wherein: also comprises a skimming structure;

the skimming structure comprises a skimming pipe (240), and the skimming pipe (240) comprises a skimming pipe body (241), a shell (242), a skimming pipe motor (243), a speed reducing mechanism (244), a turbine lead screw lifter (245), a lead screw (246) and a plurality of long grooves (247);

the skimming pipe body (241) is of a circular pipe structure, and a plurality of long grooves (247) are formed in two sides of the skimming pipe body (241) in the radial direction;

the shell (242) is arranged at each of two ends of the skimming pipe body (241), and two ends of the skimming pipe body (241) respectively penetrate through the shell (242) and are rotatably connected with the shell (242) through bearings;

the skimming pipe motor (243) is arranged in the shell (242);

the rotating shaft of the skimming pipe motor (243) is fixedly connected with the skimming pipe body (241) through a speed reducing mechanism (244);

the turbine lead screw lifter (245) is arranged in the shell (242), and the turbine lead screw lifter (245) is fixedly connected with the bottom of the shell (242);

the top of the lead screw (246) penetrates through the shell (242), the lead screw (246) is connected with the shell (242) in a sliding mode, and the turbine lead screw lifter (245) is connected with the lead screw (246) in a threaded mode;

the skimming pipe (240) is arranged at the right part of the primary settling zone (200).

3. An improved high density pond as claimed in claim 1 or 2, wherein: the speed reduction mechanism (244) comprises a speed reduction housing (41), a gear shaft (42), an output shaft (43) and a gear (44);

the speed reduction shell (41) is arranged inside the shell (242), and the speed reduction shell (41) is fixedly connected with the bottom of the shell (242);

two ends of the gear shaft (42) penetrate through the speed reduction shell (41) respectively, and two ends of the gear shaft (42) are rotatably connected with two sides of the speed reduction shell (41) through bearings respectively;

two ends of the output shaft (43) penetrate through the speed reducing shell (41) respectively, and two ends of the output shaft (43) are rotatably connected with two sides of the speed reducing shell (41) through bearings respectively;

the gear (44) is arranged on the output shaft (43), and the gear (44) is fixedly connected with the output shaft (43) through a flat key; the teeth on the gear (44) are meshed with the teeth on the gear shaft (42);

the number of teeth of the gear (44) is greater than that of the gear shaft (42);

the output shaft (43) is arranged in parallel with the gear shaft (42), one end of the gear shaft (42) is fixedly connected with a rotating shaft of the skimmer tube motor (243), and the rotating shafts of the gear shaft (42) and the skimmer tube motor (243) are positioned on the same axis;

one end of the output shaft (43) is fixedly connected with the skimming pipe body (241), and the output shaft (43) and the skimming pipe body (241) are positioned on the same axis.

4. An improved dense pond, as claimed in claim 3, wherein: the automatic skimming control structure comprises a single chip microcomputer, a third time relay, a fourth time relay and a liquid level sensor;

wherein a third time relay is provided in the power supply circuit of the skimmer tube motor (243) and a fourth time relay is provided in the power supply circuit of the turbine screw hoist (245);

the detection end of the liquid level sensor is arranged at the bottom of the outer side of the skimming pipe body (241), and the signal input end of the liquid level sensor is connected with the liquid level signal input end of the single chip microcomputer;

and a first control signal output end and a second control signal output end of the single chip microcomputer are respectively connected with a skimming pipe motor (243) and a turbine screw rod lifter (245).

5. An improved dense pond, as claimed in claim 1, wherein: the slag flushing device also comprises a slag flushing structure, wherein the slag flushing structure comprises a slag flushing main pipe, and a first slag flushing pipe (251) and a second slag flushing pipe (252) are communicated with the slag flushing main pipe;

the first slag flushing pipe (251) is arranged at the upper end of the left pool wall of the primary settling area (200) and is parallel to the skimming pipe body (241), a water inlet valve is arranged at the water inlet end of the first slag flushing pipe (251), a row of small holes are formed in the first slag flushing pipe (251), and the openings of the small holes face the pool surface of the primary settling area (200);

the second is washed sediment pipe (252) and is set up on skimming body (241) right side, and perpendicular with skimming body (241), the second is washed sediment pipe (252) and is fixed in the rear side pool wall upper end of preliminary sedimentation zone (200), the one end of second is washed sediment pipe (252) is equipped with the water intaking valve, be equipped with a row of aperture on second is washed sediment pipe (252), just the aperture is towards the pool face of preliminary sedimentation zone (200).

6. An improved dense pond, as claimed in claim 4, wherein: the device also comprises a water outlet anti-blocking structure; the water outlet anti-blocking structure comprises a water outlet anti-blocking shell (120), a first motor (130), a transmission device (140) and a flow pusher (150);

a rectangular long groove (121) is formed in the right end of the water outlet anti-blocking shell (120); a first fixing plate (122) is fixedly arranged in the water outlet anti-blocking shell (120), and a second fixing plate (123) and a third fixing plate (124) are sequentially and respectively fixedly arranged below the first fixing plate (122); the bottom of the water outlet anti-blocking shell (120) is provided with a double-rod hydraulic cylinder (125), the cylinder body of the double-rod hydraulic cylinder (125) is fixedly connected with the shell (120), and the double-rod hydraulic cylinder (125) is arranged in the front-back direction;

the first motor (130) is fixedly arranged on the first fixing plate (122), an output shaft of the first motor (130) penetrates through the first fixing plate (122), and the output shaft of the first motor (130) is rotatably connected with the first fixing plate (122) through a bearing;

the transmission device (140) comprises a speed reducer (141), a first bevel gear (142), a second bevel gear (143), a connecting shaft (144) and a hydraulic cylinder (145);

the speed reducer (141) is arranged on the second fixing plate (123) and is fixedly connected with the second fixing plate (123); the input shaft of the speed reducer (141) is fixedly connected with the output shaft of the first motor (130), and the input shaft of the speed reducer (141) and the output shaft of the first motor (130) are on the same axis;

an output shaft of the speed reducer (141) penetrates through the third fixing plate (124), and the output shaft of the speed reducer (141) is rotatably connected with the third fixing plate (124) through a bearing; the shaft end of the output shaft of the speed reducer (141) is fixedly connected with a first bevel gear (142);

the upper end of the connecting shaft (144) penetrates through the third fixing plate (124), and the connecting shaft (144) is rotatably connected with the third fixing plate (124) through a bearing; the lower end of the connecting shaft (144) is rotatably connected with the inner bottom surface of the water outlet anti-blocking shell (120) through a bearing;

the second bevel gear (143) is fixedly connected to the upper end of the connecting shaft (144), and the second bevel gear (143) is meshed with the first bevel gear (142);

the left end of the hydraulic cylinder (145) penetrates through a rectangular long groove (121) at the right end of the water outlet anti-blocking shell (120), and the left end of the cylinder body of the hydraulic cylinder (145) is fixedly connected to the connecting shaft (144);

the impeller (150) comprises a second motor (151), a protective cover (152), a rotating block (153) and a plurality of blades (154);

the protective cover (152) is of a semi-closed structure with an opening at the right end and a closed left end, and the opening at the right end of the protective cover (152) faces to a water inlet between a mixing reaction zone and a primary sedimentation zone of the high-density pond;

the shell of the second motor (151) penetrates through the center of the protective cover (152), and the right end of the shell of the second motor (151) is fixedly connected with the protective cover (152);

the left end of the shell of the second motor (151) is fixedly connected with one end of a hydraulic rod of the hydraulic cylinder (145);

the output shaft of the second motor (151) is fixedly connected with the rotating block (153);

one ends of the blades (154) are respectively fixedly connected to the rotating blocks (153), and the blades (154) are perpendicular to an output shaft of the second motor (151).

7. An improved dense pond, as claimed in claim 6, wherein: the automatic water outlet anti-blocking control structure comprises a first time relay and a second time relay;

wherein a first time relay is arranged in the supply circuit of the first electric machine (130) and a second time relay is arranged in the supply circuit of the second electric machine (151);

and the third, fourth, fifth and sixth control signal output ends of the single chip microcomputer are respectively connected with the first motor (130), the second motor (151), the hydraulic cylinder (35) and the double-rod hydraulic cylinder (14).

8. An improved dense pond, as claimed in claim 5, wherein: the water used in the slag flushing main pipe and the flushing main pipe is reclaimed water.

9. An improved dense pond, as claimed in claim 8, wherein: the slag flushing automatic control structure is a fifth time relay; the third time relay is arranged in a power supply loop of the water inlet valve of the flushing main pipe; and a seventh control signal output end of the singlechip is connected with a water inlet valve of the flushing main pipe.