CN220174199U - Pumping sedimentation device of bottom-cleaning equipment for dredging fish pond - Google Patents

Abstract

The utility model discloses a pumping sedimentation device of a dredging bottom-changing purifying device for a fish pond, which relates to the technical field of fish pond sewage treatment and comprises the following components: the ship body is arranged on the water surface of the fish pond and can freely move on the water surface of the fish pond; a sewage extraction mechanism for extracting sewage containing silt in the fish pond, wherein a water inlet end of the sewage extraction mechanism is suspended on the ship body and moves along with the ship body; the sedimentation tank is arranged on the bank side of the fishpond and is used for carrying out primary sedimentation treatment on the fishpond sewage extracted by the sewage extraction mechanism, and the water outlet end of the sewage extraction mechanism is positioned in the sedimentation tank. The sedimentation tank is used for carrying out primary sedimentation on sewage, the purifying device is used for carrying out secondary sedimentation on the sewage by using a medicament, and the treatment effect of the sewage is increased by adopting twice sedimentation, so that the sewage treatment capacity of the bottom-improved purifying device for dredging the fishpond is increased, and further, the sewage treatment requirements of large sludge and large water pumping capacity are met; in addition, no treatment agent is added in the sedimentation tank, and the settled sludge can be directly returned to the field.

Description

Pumping sedimentation device of bottom-cleaning equipment for dredging fish pond

Technical Field

The utility model relates to the technical field of fish pond sewage treatment, in particular to a water pumping sedimentation device of a bottom-cleaning equipment for dredging a fish pond.

Background

With the rapid development of the aquaculture industry in China, the environment condition of carrier-water resources on which aquaculture depends has become a highly concerned problem in China and industry.

The fish in the fishpond is a specific form of the aquaculture, after the fish is cultured in the fishpond, the quality of water in the fishpond (such as permanganate index, ammonia nitrogen, total phosphorus and the like) is concerned, when water pollution damages the growth of the fish, sewage treatment is needed to be carried out on the water in the fishpond in time, otherwise, the water is polluted for a long time to damage the health of the fish, and meanwhile, pollutants in the fishpond enter a downstream river along with rainfall in a rainfall period, and water pollution is also caused to the downstream river. Therefore, in the fish pond culture technology in China, the standardization of water quality is very important, and a special sewage treatment device is needed to treat the fish pond sewage, so that on one hand, the growth of fish shoals is facilitated, and on the other hand, the pollution to downstream river channels is avoided.

Among the prior art, application number is 2022223693029, discloses a pond desilting changes end clarification plant, includes: the aeration device is used for introducing gas to the bottom of the fishpond to stir the sludge and water at the bottom of the fishpond, and the aeration output end of the aeration device is positioned in the fishpond; a sewage extraction device for extracting sewage which is stirred and contains silt, wherein the water inlet end of the sewage extraction device is arranged in the fishpond and is positioned beside the aeration output end of the aeration device; and a purifying device for purifying the sewage extracted by the sewage extracting device. According to the utility model, the aeration device is used for introducing gas to the bottom of the fish pond to stir the sludge and water at the bottom of the fish pond, the sewage extraction device is used for extracting the sewage which is stirred and contains the sludge, and the purification device is used for purifying the sewage extracted by the sewage extraction device, so that the sludge at the bottom of the fish pond is extracted and cleaned, the bottom of the fish pond is purified, the bottom environment of the fish pond is improved, the water quality of the fish pond is further improved, and the fish culturing effect of the fish pond is improved.

The device for dredging and changing the bottom of the fishpond disclosed by the patent realizes the sedimentation of sewage by adding the medicament into the purifying device, and the sludge after sedimentation and pollution discharge cannot be directly returned to the field for use due to the medicament; in addition, if the sewage treatment amount is large (including a large amount of sludge at the bottom of the pond and a large amount of water extraction), the purification effect by the purification device is not good.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a water pumping sedimentation device of a pond dredging and bottom-changing purifying device, so as to solve the problem that the sewage sedimentation is realized by adding a medicament into the purifying device, and the sludge after sedimentation and pollution discharge cannot be directly returned to the field for use due to the medicament; in addition, when the sewage treatment amount is large, the purification effect by the purification device is not good. According to the utility model, the sedimentation tank for carrying out primary sedimentation treatment on the sewage in the fishpond is arranged on the bank side of the fishpond, the sewage extracted by the sewage extraction mechanism is firstly subjected to sedimentation treatment in the sedimentation tank, the concentration of a pollution source of the sewage is reduced, and then the sewage is conveyed to the purification device of the subsequent fishpond dredging bottom-changing purification equipment for treatment, so that the sewage treatment capacity of the fishpond dredging bottom-changing purification equipment is increased, and further the sewage treatment requirements of large sludge and large water pumping capacity are met. In addition, no treatment agent is added in the sedimentation tank, and the settled sludge can be directly returned to the field for use.

In order to achieve the above purpose, the present utility model adopts the technical scheme that:

a water pumping sedimentation device of a dredging and bottom-changing purifying device for a fish pond, comprising:

the ship body is arranged on the water surface of the fish pond and can freely move on the water surface of the fish pond;

a sewage extraction mechanism for extracting sewage containing silt in the fish pond, wherein a water inlet end of the sewage extraction mechanism is suspended on the ship body and moves along with the ship body;

the sedimentation tank is arranged on the bank side of the fishpond and is used for carrying out primary sedimentation treatment on the fishpond sewage extracted by the sewage extraction mechanism, and the water outlet end of the sewage extraction mechanism is positioned in the sedimentation tank.

Preferably, the settling tank is provided with multistage and loops through the pipe connection, and the play water end of sewage extraction mechanism is located first-stage settling tank, and the tail-stage settling tank passes through pipe connection to the purifier of pond desilting change bottom clarification plant.

Preferably, a water blocking cylinder is arranged in the sedimentation tank in a suspended manner, and the water blocking cylinder is higher than the water outlet at the top end of the sedimentation tank and penetrates through the bottom of the sedimentation tank.

Preferably, a drain pipe is further arranged at the bottom of the sedimentation tank.

Preferably, the fish pond water treatment device further comprises a cover body suspended at the bottom of the fish pond water body, wherein the cover body is suspended on the ship body through a suspension piece, and the water inlet end of the sewage extraction mechanism is positioned in the cover body and is used for extracting sewage containing sludge at the bottom of the fish pond.

Preferably, the cover body comprises a cover plate at the top and baffle plates with the periphery of the cover plate downwards.

Preferably, the water inlet end of the sewage extraction mechanism comprises a water inlet main pipe and a plurality of water inlet branch pipes, the water inlet branch pipes are connected with the water inlet main pipe, and the water inlet ends of the water inlet branch pipes are downward and positioned at the bottom of the fish pond to extract sewage containing sludge at the bottom of the fish pond.

Preferably, the water inlet branch pipes are all flexible pipes, and the water inlet ends of the water inlet branch pipes are all provided with weight-increasing blocks.

Preferably, the sewage pumping mechanism further comprises a sewage pump, a sewage pump water inlet pipe and a sewage pump water outlet pipe; the water pumping port of the sewage pump is connected with the water inlet pipe of the sewage pump, the water inlet end of the water inlet pipe of the sewage pump is positioned in the fishpond, the water outlet of the sewage pump is connected with the water outlet pipe of the sewage pump, and the water outlet pipe of the sewage pump is connected to the sedimentation tank.

Preferably, the water pipe of the sewage extraction mechanism in the fish pond is a hose and is suspended on the water surface of the fish pond through a floating piece.

The utility model has the beneficial effects that:

according to the pumping sedimentation device, the sedimentation tank for carrying out primary sedimentation treatment on the sewage in the fishpond is arranged on the bank side of the fishpond, the sewage extracted by the sewage extraction mechanism is firstly subjected to sedimentation treatment in the sedimentation tank, the concentration of a pollution source of the sewage is reduced, and then the sewage is conveyed to the purification device of the subsequent fishpond dredging bottom-changing purification equipment for treatment, the sedimentation tank carries out primary sedimentation on the sewage, the purification device carries out secondary sedimentation on the sewage by using a medicament, and the treatment effect of the sewage is increased by adopting twice sedimentation, so that the sewage treatment capacity of the fishpond dredging bottom-changing purification equipment is increased, and further the sewage treatment requirements of large sludge and large water pumping capacity are met. In addition, no treatment agent is added in the sedimentation tank, and the settled sludge can be directly returned to the field for use.

Drawings

FIG. 1 is a schematic view of a pumped settlement device of the present utility model;

FIG. 2 is another schematic view of the water pump sedimentation device of the present utility model;

FIG. 3 is an enlarged view of the water inlet end of the sewage extraction mechanism of FIG. 2;

FIG. 4 is a schematic diagram of the dredging bottom-changing purifying device for the fishpond corresponding to FIG. 1;

FIG. 5 is a schematic diagram of the dredging bottom-changing purifying device for the fishpond corresponding to FIG. 2;

reference numerals:

1. a hull; 2. a sewage extraction mechanism; 21. a water inlet main pipe; 22. a water inlet branch pipe; 23. weight increasing blocks; 24. a sewage pump; 25. a sewage pump inlet pipe; 26. a sewage pump drain pipe; 3. a cover body; 31. a cover plate; 32. a baffle; 4. a float; 5. a settling tank; 51. a water blocking cylinder; 52. and a blow-down pipe.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model.

Example 1

A pumping sedimentation device of a dredging and bottom-changing purifying device for a fish pond, as shown in figures 1-5, comprising:

a hull 1 arranged on the water surface of the fish pond and capable of freely moving on the water surface of the fish pond;

a sewage extraction mechanism 2 for extracting sewage containing sludge in the fish pond, wherein the water inlet end of the sewage extraction mechanism 2 is suspended on the ship body 1 and moves along with the ship body 1;

the sedimentation tank 5 is arranged on the bank side of the fish pond and is used for carrying out primary sedimentation treatment on the fish pond sewage extracted by the sewage extraction mechanism 2, and the water outlet end of the sewage extraction mechanism 2 is positioned in the sedimentation tank 5.

As shown in fig. 1 and 2, the settling tank 5 is provided with multiple stages and sequentially connected through pipelines, the embodiment is provided with two stages, the water outlet end of the sewage extraction mechanism 2 is positioned in the first-stage settling tank 5, and the tail-stage settling tank 5 is connected to the purifying device of the bottom-cleaning and bottom-cleaning device of the fish pond through a pipeline.

In this embodiment, the sewage extracted by the sewage extraction mechanism 2 is firstly subjected to sedimentation treatment in the sedimentation tank 5, the concentration of the pollution source of the sewage is reduced, and then the sewage is conveyed to the purification device of the subsequent dredging bottom-improved purification equipment for treatment, the sedimentation tank 5 is used for carrying out primary sedimentation on the sewage, the purification device is used for carrying out secondary sedimentation on the sewage by using a medicament, and the treatment effect of the sewage is increased by adopting twice sedimentation, so that the sewage treatment capacity of the dredging bottom-improved purification equipment for the fishpond is increased, and further the sewage treatment requirements of large sludge and large water pumping capacity are met. In addition, no treatment agent is added in the sedimentation tank 5, and the settled sludge can be directly returned to the field.

As shown in fig. 1 and 2, a water blocking cylinder 51 is suspended in the interior of the settling tank 5, the water blocking cylinder 51 is higher than the water outlet at the top end of the settling tank 5, and the bottom of the water blocking cylinder penetrates through.

In this embodiment, the height of the water blocking cylinder 51 is higher than the height of the water outlet at the top end of the settling tank 5, and the bottom of the water blocking cylinder penetrates through, so that the sewage fed by the sewage extraction mechanism 2 can only impact on the flocculate inside the water blocking cylinder 51 and cannot impact on the flocculate outside the water blocking cylinder 51, so that compared with the prior art, the flocculate of the whole settling tank 5 can be impacted, in this embodiment, only the inside of the water blocking cylinder 51 is impacted, and the settling effect is better; meanwhile, since the height of the water blocking cylinder 51 is higher than that of the water outlet, the flocculate in the water blocking cylinder 51 does not flow to the water outlet.

The water blocking cylinder 51 is higher than the water outlet and the bottom of the water blocking cylinder 51 penetrates through, when sewage flows, the sewage downwards flows in the water blocking cylinder 51, passes through the water blocking cylinder 51 from the bottom of the water blocking cylinder 51 and upwards flows, and is discharged from the water outlet, and the flowing distance of the sewage in the settling tank 5 is increased, so that the flowing time of the sewage in the settling tank 5 is increased, and a pollution source (mainly sludge) is fully settled.

A drain pipe 52 is also arranged at the bottom of the settling tank 5. When the sewage is required to be discharged, the sewage pipe 52 is utilized to discharge the pollution source containing the sludge at the bottom of the sedimentation tank 5, and the settled pollution source containing the sludge can be directly returned to the field for use as no treatment agent is added in the sedimentation tank 5.

In the embodiment, by arranging the freely movable hull 1 on the water surface of the fish pond, the water inlet end of the sewage extraction mechanism 2 is suspended on the hull 1 and moves along with the hull 1, after dredging and bottom-changing of a certain area of the fish pond, the movable hull 1 can move to another position of the fish pond, when moving, the hull 1 drives the water inlet end of the sewage extraction mechanism 2 to move along, after moving in place, dredging and bottom-changing are carried out on the position, and then, by analogy, dredging and bottom-changing are carried out on each area of the fish pond; the sludge at the bottom of the fish pond is extracted and cleaned, the bottom of the fish pond is purified, the bottom environment of the fish pond is improved, the water quality of the fish pond is further improved, the fish culturing effect of the fish pond is improved, and water pollution to downstream river channels is avoided.

In this embodiment, the hull 1 may be a conventional manual rowing or an electric boat.

Example 2

The embodiment is further described on the basis of embodiment 1, as shown in fig. 1 and 4, the device further comprises a cover body 3 suspended at the bottom of the water body of the fish pond, the cover body 3 is suspended on the ship body 1 through a suspension piece, and the water inlet end of the sewage extraction mechanism 2 is positioned in the cover body 3 and is used for extracting sewage containing sludge at the bottom of the fish pond.

In this embodiment, the cover 3 covers the bottom of the pond, that is, covers the top of the sludge at the bottom of the pond, and when the sewage pumping mechanism 2 pumps water, it generates a certain suction force to pump the sludge in the cover 3; when the sewage is pumped, the sewage at the bottom of the water enters the cover body 3 through the bottom of the cover body 3, and is pumped by the water inlet end of the sewage pumping mechanism 2 in the cover body 3, and when the sewage flows inwards at the bottom of the cover body 3, the sewage can carry the sludge at the bottom of the fish pond to flow into the cover body 3 along with the sewage, and is pumped by the sewage pumping mechanism 2 for purification.

As shown in fig. 1, the cover 3 includes a top cover 31 and a baffle 32 downward around the cover 31. The cover plate 31 and the baffle 32 are both used for blocking the water body from flowing, the cover body 3 is utilized to cover the water body, so that the water body can only flow through the gap between the cover body and the bottom of the pond, sewage flows through the gap during extraction, sludge carrying the bottom of the pond flows into the cover body 3 along with the sewage, and is extracted and purified by the sewage extraction mechanism 2, and the sludge at the bottom of the pond is extracted and cleaned, so that dredging and bottom changing are realized.

Example 3

The cover 3 provided in embodiment 2 is suitable for dredging and changing the bottom of a relatively flat bottom of a fish pond, and the height of the cover 3 is not required to be adjusted when the ship body 1 is moved to another position. However, when the bottom of the fish pond is uneven, i.e. uneven, and the ship body 1 is moved to a position with different depths for dredging and bottom changing every time, the height of the cover body 3 needs to be readjusted on the ship body 1, which is troublesome.

The present embodiment is further described on the basis of embodiment 1, so as to solve the problem that the cover 3 is troublesome to adjust when the embodiment 2 is applied to a fishpond with uneven bottom to perform dredging and bottom changing.

As shown in fig. 2, 3 and 5, the water inlet end of the sewage pumping mechanism 2 comprises a water inlet main pipe 21 and a plurality of water inlet branch pipes 22, the water inlet branch pipes 22 are connected with the water inlet main pipe 21, and the water inlet ends of the water inlet branch pipes 22 face downwards and are positioned at the bottom of the fish pond to pump sewage containing sludge at the bottom of the fish pond. And the sludge at the bottom of the fishpond is extracted by utilizing a plurality of water inlet branch pipes 22, and the extracted sewage is collected to a water inlet main pipe 21 and then is conveyed outwards.

The water inlet branch pipes 22 are all flexible pipes, and the water inlet ends of the water inlet branch pipes are all provided with weight-increasing blocks 23. The weight block 23 settles the bottom of the water inlet branch pipe 22 at the bottom of the fishpond so as to carry out dredging treatment on the bottom of the fishpond, and the water inlet branch pipes 22 are all flexible pipes, so that when dredging is carried out on the bottom of the fishpond with different depths, the height of the flexible pipes of the water inlet branch pipes 22 can be adaptively adjusted under the action of the weight block 23 so as to carry out dredging treatment on the bottom of the fishpond, and the water inlet branch pipes 22 do not need to be readjusted on the ship body 1.

Specifically, as shown in fig. 3, in use, a section of hose will settle on the sludge at the bottom of the pond under the action of the weight increasing block 23. When the depth of the fish pond becomes shallow, the other part of the hose can continue to be settled at the bottom of the fish pond, namely the part of the hose settled at the bottom of the fish pond can be increased, and the height of the hose becomes low; when the depth of the fish pond becomes deep, the part of the hose which is settled at the bottom of the fish pond can leave the bottom of the fish pond, namely, the part of the hose which is settled at the bottom of the fish pond can be reduced, and the height of the hose becomes high. The part of the hose settled at the bottom of the fishpond is increased or reduced so as to adaptively adjust the height of the hose, and the bottom of the fishpond with different depths is subjected to dredging treatment.

Example 4

This embodiment is further explained on the basis of embodiment 2 or 3, and as shown in fig. 1 and 2, the sewage pumping mechanism 2 further includes a sewage pump 24, a sewage pump water inlet pipe 25, and a sewage pump water outlet pipe 26; the water suction port of the sewage pump 24 is connected with a sewage pump water inlet pipe 25, the water inlet end of the sewage pump water inlet pipe 25 is positioned in the fishpond, the water discharge port of the sewage pump 24 is connected with a sewage pump water discharge pipe 26, and the sewage pump water discharge pipe 26 is connected into the settling tank 5.

When the cover 3 of embodiment 2 is adopted, the water inlet end of the sewage pump water inlet pipe 25 is positioned in the cover 3; when the intake manifold + several intake branch structures of embodiment 3 are adopted, the intake end of the sewage pump intake pipe 25 is connected to the intake manifold 21. When in use, the sewage pump 24 is utilized to generate suction force, so that sewage in the fish pond enters the sewage pump 24 through the sewage pump water inlet pipe 25 and is then sent into the settling tank 5 for treatment through the sewage pump water inlet pipe 25.

As shown in fig. 1 and 2, the water pipe of the sewage pumping mechanism 2 in the fish pond is a hose and is suspended on the water surface of the fish pond by a float 4, the float 4 can be a pontoon, and the hose pipe of the sewage pumping mechanism 2 is floated on the water surface of the fish pond by the float 4 so as to drag the hose pipe when moving.

For a better understanding of the present utility model, the following is a complete description of the principles of the utility model:

as shown in fig. 1 and 4, when sewage is pumped, a pumping suction force is generated by the sewage pump 24 of the sewage pumping mechanism 2 to pump the sludge inside the cover 3. During extraction, sewage in the cover body 3 is extracted, and at the same time, the sewage at the water bottom enters the cover body 3 through the bottom of the cover body 3 and is extracted by the water inlet end of the sewage extraction mechanism 2 in the cover body 3, and sewage in the fish pond enters the sewage pump 24 through the sewage pump water inlet pipe 25 and is then sent into the sedimentation tank 5 for treatment through the sewage pump water inlet pipe 25.

Alternatively, as shown in fig. 2, 3 and 5, the weight-increasing block 23 settles the bottom of the water inlet branch pipe 22 at the bottom of the fish pond, when sewage is pumped, the sewage containing sludge is pumped by the sewage pump 24 of the sewage pumping mechanism 2, the pumped sewage is collected to the water inlet manifold 21, enters the sewage pump 24 through the sewage pump water inlet pipe 25, and is sent to the settling tank 5 for treatment through the sewage pump water inlet pipe 25.

In the settling tank 5, sewage flows downwards in the water blocking cylinder 51 when flowing, passes through the water blocking cylinder 51 from the bottom of the water blocking cylinder 51, flows upwards again, is discharged from a water outlet, and enters the next-stage settling tank 5 for settling.

After the sewage is settled by the multistage settling tank 5, the sewage is sent into the purifying device again, and the sewage is settled again by adding the medicament, and the structure and the principle of the purifying device are the same as those of the patent with the application number of 2022223693029, and are not further described here. The settling cask 5 has carried out primary sedimentation to sewage, and purifier utilizes the medicament to subside once more to sewage, adopts twice to subside the treatment effect that makes sewage to make the pond desilting change bottom clarification plant's sewage treatment capacity increase, and then satisfies the sewage treatment requirement that silt volume is big and the water extraction is big.

After dredging and bottom-changing a certain area of the fishpond, the ship body 1 is moved, and the ship body 1 is moved to another position to carry out dredging and bottom-changing. When the ship body 1 moves, the cover body 3 is driven, or the water inlet main pipe 21 and the water inlet branch pipes 22 move together, the water inlet main pipe 21 and the water inlet branch pipes 22 move to another position to perform dredging and bottom changing of the fishpond, and the like, and dredging and bottom changing are performed on each area of the fishpond.

The pond dredging and bottom-changing purifying equipment with the water pumping and settling device is not limited to pond dredging and bottom-changing purification, and can be applied to other aquaculture ponds. The dredging and bottom-changing are carried out on the fishpond, so that the culture density of the fishpond is increased, and the income of farmers is increased; meanwhile, the device is arranged on the bank side of the fish pond and in the fish pond, the installation conditions are not limited, and the cost of dredging and bottom changing of the fish pond is reduced.

While the embodiments of the present utility model have been described in detail, the present utility model is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a pond desilting changes bottom clarification plant's sedimentation device that draws water which characterized in that includes:

a hull (1) arranged on the water surface of the fish pond and capable of freely moving on the water surface of the fish pond;

a sewage extraction mechanism (2) for extracting sewage containing silt in the fish pond, wherein the water inlet end of the sewage extraction mechanism (2) is suspended on the ship body (1) and moves along with the ship body (1);

the sedimentation tank (5) is arranged on the bank side of the fishpond and is used for carrying out primary sedimentation treatment on the fishpond sewage extracted by the sewage extraction mechanism (2), and the water outlet end of the sewage extraction mechanism (2) is positioned in the sedimentation tank (5).

2. The water pumping sedimentation device according to claim 1, characterized in that the sedimentation tank (5) is provided with a plurality of stages and is connected in sequence through a pipeline, the water outlet end of the sewage extraction mechanism (2) is positioned in the first-stage sedimentation tank (5), and the tail-stage sedimentation tank (5) is connected to the purification device of the bottom-modified fish pond dredging purification device through a pipeline.

3. The water pumping sedimentation device according to claim 1, wherein a water blocking cylinder (51) is arranged in the sedimentation tank (5) in a suspended manner, and the water blocking cylinder (51) is higher than the water outlet at the top end of the sedimentation tank (5) and penetrates through the bottom.

4. The pumped sedimentation device according to claim 1, characterized in that the bottom of the sedimentation tank (5) is further provided with a drain pipe (52).

5. The water pumping and sedimentation device according to claim 1, further comprising a cover body (3) suspended at the bottom of the water body of the fish pond, wherein the cover body (3) is suspended on the ship body (1) through a suspension piece, and the water inlet end of the sewage pumping mechanism (2) is positioned in the cover body (3) and is used for pumping sewage containing sludge at the bottom of the fish pond.

6. The water pumping sedimentation device according to claim 5, wherein the cover body (3) comprises a cover plate (31) at the top and baffles (32) with downward circumferences of the cover plate (31).

7. The water pumping sedimentation device according to claim 1, characterized in that the water inlet end of the sewage pumping mechanism (2) comprises a water inlet main pipe (21) and a plurality of water inlet branch pipes (22), the water inlet branch pipes (22) are connected with the water inlet main pipe (21), and the water inlet ends of the water inlet branch pipes (22) are downward and positioned at the bottom of the fish pond to pump sewage containing sludge at the bottom of the fish pond.

8. The water pumping and sedimentation device as claimed in claim 7, characterized in that the water inlet branches (22) are hoses and are provided with weight-increasing blocks (23) at the water inlet ends.

9. The pumped sedimentation device according to claim 1, characterized in that the sewage extraction mechanism (2) further comprises a sewage pump (24), a sewage pump inlet pipe (25) and a sewage pump outlet pipe (26); the water pumping port of the sewage pump (24) is connected with the sewage pump water inlet pipe (25), the water inlet end of the sewage pump water inlet pipe (25) is positioned in the fish pond, the water outlet of the sewage pump (24) is connected with the sewage pump water outlet pipe (26), and the sewage pump water outlet pipe (26) is connected into the settling tank (5).

10. A pumped sedimentation apparatus as claimed in claim 1, characterised in that the water pipe of the sewage extraction means (2) located in the pond is a hose and is suspended above the surface of the pond by a float (4).