CN109329177B - Circulating water fish pond - Google Patents

Abstract

The invention discloses a circulating water fish pond, comprising: a fish pond body; a fermentation tank; a first water pipe, one end of which is inserted into the fish pond body, and the other end is communicated with the fermentation pond; a first sedimentation tank; In the fermentation tank, the long arm is inserted into the first sedimentation tank; the flocculation tank; the conduit, the bottom of which extends to the center of the guide plate; the second water pipe, one end of which is connected with the first sedimentation tank, and the other end is connected with the conduit; the second sedimentation tank, A filler layer is arranged in the second sedimentation tank, and the part located below the filler layer in the second sedimentation tank is communicated with the flocculation tank; the mixing tank; the third water pipe, one end of which is connected with the part located above the filler layer in the second sedimentation tank, and the other end is connected with the mixing tank. the tank is connected; the fourth water pipe is connected with the mixing tank at one end, and the other end extends into the body of the aquarium; the fifth water pipe is connected with the interior of the mixing tank. The invention can treat the sewage in the fish pond and reuse it, and the inside of the water circulation device is easy to clean, and the filler is convenient to replace.

Description

Circulating water fish pond

technical field

The invention relates to the technical field of aquaculture. More specifically, the present invention relates to circulating water aquaculture ponds.

Background technique

There are residual bait, fish feces and secretions in the fish pond, as well as sticky pollutants in the water. These substances are prone to breed a large number of bacteria and parasites, which are unfavorable for the growth of fish and need to be cleaned up in time to prevent the deterioration of water quality. The water quality can be improved by changing the water, but the fish needs to be transferred and replaced, and a large amount of purified water needs to be used, which requires a lot of work and takes a long time. In order to save water, sewage needs to be recycled, but the existing water circulation device has problems such as insufficient treatment of polluted water, and difficulty in cleaning and replacement of fillers.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a circulating water fish pond, the sewage in the fish pond can be treated and reused by the water circulation device, and the water circulation device can thoroughly treat the sewage, and the interior is easy to clean and easy to replace the filler.

In order to achieve these objects and other advantages in accordance with the present invention, a circulating water aquaculture pond is provided, comprising:

fish tank body;

Water circulation device, which includes:

The fermentation tank is in the shape of a hollow cuboid, and the side wall of the lower part of the fermentation tank is provided with a first sewage outlet;

One end of the first water pipe is inserted into the lower part of the fish pond body, and the other end is fixed on the upper part of one of the two side walls spaced along the width direction of the fermentation pond, and is connected with the interior of the fermentation pond. connected, the first water pipe is provided with a water pump;

the first sedimentation tank, which is in the shape of a hollow cuboid, and the side wall of the lower part of the first sedimentation tank is provided with a second sewage outlet;

The siphon, the short arm of which is inserted into the fermentation tank and is spaced from the bottom of the fermentation tank at a certain distance, and the long arm is inserted into the lower part of the first sedimentation tank and is located above the second sewage outlet;

The flocculation tank is in the shape of a hollow cuboid. The bottom of the flocculation tank is provided with a guide plate. The horizontal cross-section of the guide plate is spiral. The outlet end of the guide plate is separated from the side wall of the flocculation tank by a certain distance. ;

A duct, which is arranged in the vertical direction, the bottom of the duct passes through the top of the flocculation tank, extends to the center of the deflector, and is separated from the bottom of the deflector by a certain distance, and is used for introducing flocculant into the deflector ;

A second water pipe, one end of which communicates with the lower part of the first sedimentation tank and is located above the long arm of the siphon pipe, and the other end passes through the side wall of the flocculation tank and communicates with the conduit. The second water pipe There is a first valve on it;

In the second sedimentation tank, a third sewage outlet is arranged on the side wall of the lower part, and a packing layer is arranged in the second sedimentation tank. Above, the height of the top surface of the packing layer is lower than the height of the top of the guide plate, and the part located below the packing layer in the second sedimentation tank is communicated with the flocculation tank;

mixing pool;

A third water pipe, one end of which is communicated with the part located above the packing layer in the second sedimentation tank, and the other end is communicated with the mixing tank, and the third water pipe is provided with a second valve;

a fourth water pipe, one end of which is communicated with the mixing tank, and the other end extends into the body of the fish pond, and a water pump is arranged on the fourth water pipe;

The fifth water pipe, one end of which is communicated with the interior of the mixing tank, is used for introducing purified water into the mixing tank, and a third valve is arranged on the fifth water pipe.

Preferably, in the circulating water fish pond, the water circulation device further comprises:

The filter screen is arranged in the first sedimentation tank, and divides the interior of the first sedimentation tank into two chambers from top to bottom, the long arm of the siphon pipe passes through the filter screen, and one end of the second water pipe is located in the filter screen. above the net.

Preferably, in the circulating water fish pond, the height of one end of the second water pipe is higher than the height of the other end of the second water pipe.

Preferably, in the circulating water fish pond, the water circulation device further comprises:

The first pipe body is arranged in the vertical direction, the upper part of the first pipe body is located in the mixing tank, the bottom of the first pipe body passes through the bottom of the mixing tank, and the oxygen or air inlet is formed by the bottom of the first pipe body, and the first pipe body is formed. One end of the five water pipes and the other end of the third water pipe are respectively fixedly connected with the side wall of the upper part of the first pipe body, and communicated with the interior of the first pipe body;

A plurality of second pipe bodies are arranged at intervals along the circumferential direction of the first pipe body and are located in the mixing tank, and one end of each second pipe body is connected to the side wall of the lower part of the first pipe body It is fixedly connected and communicated with the inside of the first pipe body, and the other end extends upward.

Preferably, in the circulating water fish pond, the water circulation device further comprises:

The third pipe body is annular, the other end of each second pipe body is connected to the third pipe body, and communicates with the interior of the third pipe body, and the third pipe body and the fourth water pipe Connected.

Preferably, in the circulating water fish pond, the water circulation device further comprises:

a baffle plate, which is L-shaped and consists of a vertically arranged first plate body and a horizontally arranged second plate body, the first plate body is parallel to the two side walls spaced along the width direction of the fermentation tank, And separated by a certain distance, and opposite to the other end of the first water pipe, the second plate body is provided with a plurality of through holes at intervals, and the three sides of the second plate body that are not connected with the first plate body are respectively connected with the three sides of the fermentation tank. The side walls are seamlessly connected, the short arm of the siphon pipe is inserted into the area enclosed by the baffle and the fermentation tank, and is located above the second plate body, and the first sewage outlet is located below the second plate body.

Preferably, in the circulating water aquaculture pond, the top of the fermentation tank is detachably connected to its side wall, and the top of the first plate is abutted against the top of the fermentation tank; the fermentation tank is spaced apart along its width direction. A first support block and a second support block are respectively fixed on the two side walls provided, and the second plate body rests on the first support block and the second support block. The second support block does not seal the plurality of through holes, the first support block and the second support block are spaced apart from the two side walls of the fermentation tank that are spaced along its length direction, and the first plate A limit rod is fixed on the side opposite to one of the two side walls spaced along its width direction on the fermentation tank, and the limit rod is spaced from the fermentation tank along its width direction. One of the two side walls abuts.

Preferably, in the circulating water fish pond, a feeding device is provided on the top of the conduit, and the feeding device is located above the flocculation tank for adding flocculant to the conduit.

Preferably, in the circulating water aquaculture pond, the top of the first sedimentation tank is detachably connected to its sidewall, the top of the second sedimentation tank is detachably connected to its sidewall, and the top of the flocculation tank and its sidewall are detachable Removably connected.

Preferably, in the circulating water fish pond, an annular first limit block is fixed on the long arm of the siphon, and an annular first stop is fixed on the inner side wall of the lower part of the first sedimentation tank the second limit block, the filter screen is sandwiched between the first limit block and the second limit block, and the first limit block and the second limit block are not sealed Mesh on the filter.

The present invention includes at least the following beneficial effects:

The water circulation device of the invention includes a fermentation tank, a first sedimentation tank, a flocculation tank, a second sedimentation tank and a mixing tank, and can first perform anaerobic fermentation on pollutants, degrade the pollutants, and then sediment the sewage, and then Most of the sedimented sewage is flocculated by flocculants, so that the small particles in the sewage are aggregated into clusters, and then the flocs are precipitated. Finally, the treated water is mixed with purified water and introduced into the fish pond. Gradual treatment can completely remove pollutants in sewage.

The baffle plate and the filter screen of the present invention can be taken out for cleaning or replacement, and the filler is also easy to take out. ground is polluted.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

1 is a schematic structural diagram of a circulating water fish pond according to an embodiment of the present invention;

2 is a schematic structural diagram of a connection between a conduit and a second water pipe according to an embodiment of the present invention;

3 is a schematic structural diagram of a deflector according to an embodiment of the present invention;

4 is a schematic structural diagram of a mixing tank according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a third pipe body according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be noted that in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

As shown in Figure 1 to Figure 5, the present invention provides a circulating water fish pond, including:

Fish pond body 100;

Water circulation device, which includes:

The fermentation tank 110 is in the shape of a cuboid with a hollow interior, and a first sewage outlet 111 is provided on the side wall of the lower part of the fermentation tank 110 for discharging the sludge generated at the bottom of the fermentation tank 110 after fermentation;

One end of the first water pipe 120 is inserted into the lower part of the fish pond body 100, and the other end is fixed on the upper part of one of the two side walls spaced along the width direction of the fermentation pond 110, and is connected with the said fermentation tank 110. The interior of the fermentation tank 110 is communicated, and a water pump is provided on the first water pipe 120 for introducing sewage into the fermentation tank 110;

The first sedimentation tank 130 is in the shape of a cuboid with a hollow interior, and a second sewage outlet 131 is provided on the side wall of the lower part of the first sedimentation tank 130 for discharging the sediment at the bottom of the first sedimentation tank 130;

The siphon 140, the short arm of which is inserted into the fermentation tank 110 and is separated from the bottom of the fermentation tank 110 by a certain distance, and the long arm is inserted into the lower part of the first sedimentation tank 130, and is located above the second sewage outlet 131, for the fermentation tank 110 The water in the upper part is introduced into the first sedimentation tank 130;

The flocculation tank 150 is in the shape of a hollow cuboid. The bottom of the flocculation tank 150 is provided with a guide plate 151. The horizontal cross-sections of the guide plate 151 are all spirals. The side walls are separated by a certain distance, so that the sewage enters the deflector 151 from the center of the deflector 151, and can enter the flocculation tank 150 after flowing along the spiral of the deflector 151;

The duct 160 is arranged in the vertical direction, the bottom of the duct 160 passes through the top of the flocculation tank 150, and extends to the center of the deflector 151, and is separated from the bottom of the deflector 151 by a certain distance for guiding the flow A flocculant is introduced into the plate 151;

One end of the second water pipe 170 communicates with the lower part of the first sedimentation tank 130 and is located above the long arm of the siphon pipe 140 , and the other end passes through the side wall of the flocculation tank 150 and is connected to the conduit 160 The second water pipe 170 is provided with a first valve, and the precipitated water in the first sedimentation tank 130 is introduced into the guide plate 151 through the second water pipe 170;

The second sedimentation tank 180 is provided with a third sewage outlet 181 on the side wall of the lower part, which is used to discharge the sediment at the bottom of the second sedimentation tank 180. The second sedimentation tank 180 is provided with a packing layer 182. The top and bottom of the sedimentation tank 180 are separated by a certain distance, and are located above the third sewage outlet 181. The height of the top surface of the packing layer 182 is lower than the height of the top of the guide plate 151, and the second sedimentation tank 180 is located in the packing layer. The part below 182 is communicated with the flocculation tank 150; the filler is arranged in an inner hollow filter screen, the size of the filter screen is the same as the size of the horizontal section of the second sedimentation tank 180, and the filter screen is arranged in the second sedimentation tank along the horizontal direction. In the tank 180, the top of the filter screen is fixedly connected to the bottom of the T-shaped connecting rod, the vertical part of the T-shaped connecting rod passes through the top of the second sedimentation tank 180, and the horizontal part rests on the top of the second sedimentation tank 180, so that the filler The layer 182 is suspended in the second settling tank 180 .

mixing pool 190;

The third water pipe 200 has one end communicated with the part of the second sedimentation tank 180 located above the packing layer 182, and the other end communicated with the mixing tank 190, and the third water pipe 200 is provided with a second valve;

The fourth water pipe 210, one end of which is communicated with the mixing tank 190, and the other end extends into the fish tank body 100, and a water pump is provided on the fourth water pipe 210;

One end of the fifth water pipe 220 is connected with the interior of the mixing tank 190 , and the other end is connected with a purified water source for introducing purified water into the mixing tank 190 . The fifth water pipe 220 is provided with a third valve.

In the circulating water fish pond provided by this solution, when in use, the valves on the second water pipe 170 and the third water pipe 200 are closed first, and sewage is introduced into the fermentation tank 110 through the first water pipe 120, and the sewage is depleted in the fermentation tank 110. Oxygen fermentation, after the degradation of pollutants is completed, the preliminary purified water is introduced into the first sedimentation tank 130 through the siphon 140 for sedimentation. After the sedimentation is completed, the valves on the second water pipe 170 and the third water pipe 200 are opened, and at the same time, the pipes 160 are continuously sent to the first sedimentation tank 130. The flocculant is introduced into the flocculation tank 150, and the water in the first sedimentation tank 130 is led to the deflector 151 through the second water pipe 170 to be mixed with the flocculant, and then enters the flocculation tank 150 through the water outlet end of the deflector 151, Because the part of the second sedimentation tank 180 below the filler layer 182 is connected to the flocculation tank 150, the water in the flocculation tank 150 is introduced into the second sedimentation tank 180, and then filtered through the filler layer 182, and then introduced into the mixing tank through the third water pipe 200. In the tank 190, purified water is introduced into the mixing tank 190 through the fifth water pipe 220, and the treated water and the purified water are mixed and introduced into the fish tank body 100 through the fourth water pipe 210.

In another technical solution, in the circulating water fish pond, the water circulation device further includes:

The filter screen 132 is arranged in the first sedimentation tank 130, and divides the interior of the first sedimentation tank 130 into two chambers from top to bottom, the long arm of the siphon 140 passes through the filter screen 132, One end of the second water pipe 170 is located above the filter screen 132 . The filter screen 132 can filter large-particle impurities in the first sedimentation tank 130 , and can also prevent the second water pipe 170 from introducing large-particle impurities into the flocculation tank 150 .

In another technical solution, in the circulating water fish pond, the height of one end of the second water pipe 170 is higher than the height of the other end of the second water pipe 170 . The water in the first sedimentation tank 130 can easily flow into the flocculation tank 150 .

In another technical solution, in the circulating water fish pond, the water circulation device further includes:

The first pipe body 230 is arranged in the vertical direction, the upper part of the first pipe body 230 is located in the mixing tank 190, the bottom of the first pipe body 230 passes through the bottom of the mixing tank 190, and the bottom of the first pipe body 230 forms oxygen or The air inlet (a one-way valve is provided at the inlet), one end of the fifth water pipe 220 and the other end of the third water pipe 200 are respectively fixedly connected to the side wall of the upper part of the first pipe body 230, and are connected to the the internal communication of the first pipe body 230;

A plurality of second pipe bodies 240 are arranged at intervals along the circumferential direction of the first pipe body 230 and are located in the mixing tank 190, and one end of each second pipe body 240 is connected to the first pipe body The side wall of the lower part of 230 is fixedly connected and communicated with the inside of the first pipe body 230, and the other end extends upward.

The treated water is introduced into the first pipe body 230 through the third water pipe 200, purified water is introduced into the first pipe body 230 through the fifth water pipe 220, and oxygen or air is introduced through the bottom of the first pipe body 230. After mixing the fresh water, purified water and oxygen or air, it flows out through the second pipe body 240, and then is introduced into the fish pond body 100 through the fourth water pipe 210, which can increase the oxygen content in the water. If the sewage needs to introduce purified water into the fish tank body 100 during the fermentation process, the purified water is introduced into the first pipe body 230 through the fifth water pipe 220. After the purified water is mixed with oxygen or air, the purified water is guided through the fourth water pipe 210. into the main body 100 of the fish pond. If only the treated water needs to be introduced into the fish tank body 100 , the valve on the fifth water pipe 220 is closed, and the treated water is introduced into the first pipe body 230 only through the third water pipe 200 .

In another technical solution, in the circulating water fish pond, the water circulation device further includes:

The third pipe body 250 is annular, and the other end of each second pipe body 240 is connected to the third pipe body 250 and communicated with the interior of the third pipe body 250. The third pipe body 250 communicates with the fourth water pipe 210 . The treated water is introduced into the first pipe body 230 through the third water pipe 200 and/or purified water is introduced into the first pipe body 230 through the fifth water pipe 220, and oxygen or air is introduced through the bottom of the first pipe body 230, After the treated water and/or purified water, oxygen or air are mixed in the first pipe body 230 and the second pipe body 240 , flow into the third pipe body 250 through the second pipe body 240 , and then pass through the fourth water pipe 210 Introduced into the main body 100 of the fish pond, which can greatly increase the oxygen content in the water.

In another technical solution, in the circulating water fish pond, the water circulation device further includes:

The baffle is L-shaped and consists of a first plate body 112 arranged vertically and a second plate body 113 arranged horizontally. The side walls are parallel and spaced apart by a certain distance, and are opposite to the other end of the first water pipe 120 . The second plate body 113 is provided with a plurality of through holes at intervals, and the second plate body 113 is not connected to the first plate body 112 . The three sides are respectively seamlessly connected with the three side walls of the fermentation tank 110. The short arm of the siphon pipe 140 is inserted into the area enclosed by the baffle and the fermentation tank 110, and is located above the second plate body 113. The first sewage outlet 111 located below the second plate body 113 .

When the first water pipe 120 introduces sewage into the fermentation tank 110 , the first plate body 112 can prevent the sewage from directly flowing to the second plate body 113 , and the second plate body 113 can prevent the siphon 140 from pulling out the water in the fermentation tank 110 , The sludge at the bottom of the fermentation tank 110 is pumped into the first sedimentation tank 130 together.

In another technical solution, in the circulating water fish pond, the top of the fermentation tank 110 is detachably connected to its side wall, so that the top of the fermentation tank 110 can be opened, and the top of the first plate body 112 is connected to the side wall. The tops of the fermentation tank 110 are abutted against each other, and the top of the fermentation tank 110 restricts the upward movement of the first plate body 112; the two side walls spaced apart along the width direction of the fermentation tank 110 are respectively fixed with first support blocks 114 and 112. The second support block 115, the second plate body 113 rests on the first support block 114 and the second support block 115, and the second plate body 113 is restricted downward by the first support block 114 and the second support block 115 Moving, the first support block 114 and the second support block 115 do not seal the plurality of through holes, and both the first support block 114 and the second support block 115 are connected to the fermentation tank 110 along its length direction The two side walls arranged at intervals are separated by a certain distance, so that the sewage led into the fermentation tank 110 through the first water pipe 120 can flow to the lower part of the fermentation tank 110 after passing through the first support block 114 and the second support block 115. A limit rod 116 is fixed on a side of a plate body 112 opposite to one of the two side walls of the fermentation tank 110 spaced along its width direction, and the limit rod 116 is connected to the fermentation tank. One of the two side walls spaced along the width direction on the 110 abuts against each other, and the baffle cannot be moved horizontally by setting the limit rod 116 . When the through hole on the second plate body 113 is blocked, the top of the fermentation tank 110 can be opened, and the baffle plate can be taken out upward to clean the sundries in the through hole.

In another technical solution, in the circulating water fish pond, a feeding device is provided on the top of the conduit 160, and the feeding device is located above the flocculation tank 150 for continuously adding flocculant to the conduit 160, The flocculant is continuously mixed with the water introduced into the conduit 160 from the first sedimentation tank 130 .

In another technical solution, in the circulating water fish pond, the top of the first sedimentation tank 130 is detachably connected to its sidewall, the top of the second sedimentation tank 180 is detachably connected to its sidewall, and the flocculation tank The top of 150 is removably attached to its side walls. The tops of the first sedimentation tank 130 , the second sedimentation tank 180 and the flocculation tank 150 can all be opened, so that the interiors of the first sedimentation tank 130 , the second sedimentation tank 180 and the flocculation tank 150 can be easily cleaned.

In another technical solution, in the circulating water fish pond, an annular first limiting block 141 is fixed on the long arm of the siphon 140, and the inner side of the lower part of the first sedimentation tank 130 An annular second limit block 133 is fixed on the wall, the filter screen 132 is sandwiched between the first limit block 141 and the second limit block 133, and the first limit block 141 and the second limiting block 133 do not seal the mesh holes on the filter screen 132 . The up and down movement of the filter screen 132 is restricted by the first limiting block 141 , the siphon 140 is pulled out upward, and the top of the first sedimentation tank 130 is opened, the filter screen 132 can be removed for cleaning or replacement.

When the amount of sewage treatment is large and the pollution in the fish pond is serious, the water in the fourth water pipe 210 can be led to the sterilization device for sterilization, and then led to the fish pond body 100 through the sixth water pipe communicated with the sterilization device. That is, the fourth water pipe 210 does not directly guide the water in the mixing tank 190 into the fish tank body 100, but guides the water in the sterilization device to the fish tank body 100 through the sixth water pipe after being sterilized. However, if the amount of sewage treatment is small and the concentration of pollutants in the sewage is not high, there is no need to install a sterilization device.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (10)

1. the circulating water fish pond, is characterized in that, comprises: fish tank body; Water circulation device, which includes: The fermentation tank is in the shape of a hollow cuboid, and the side wall of the lower part of the fermentation tank is provided with a first sewage outlet; One end of the first water pipe is inserted into the lower part of the fish pond body, and the other end is fixed on the upper part of one of the two side walls spaced along the width direction of the fermentation pond, and is connected with the interior of the fermentation pond. connected, the first water pipe is provided with a water pump; the first sedimentation tank, which is in the shape of a hollow cuboid, and the side wall of the lower part of the first sedimentation tank is provided with a second sewage outlet; The siphon, the short arm of which is inserted into the fermentation tank and is spaced from the bottom of the fermentation tank at a certain distance, and the long arm is inserted into the lower part of the first sedimentation tank and is located above the second sewage outlet; The flocculation tank is in the shape of a hollow cuboid. The bottom of the flocculation tank is provided with a guide plate. The horizontal cross-section of the guide plate is spiral. The outlet end of the guide plate is separated from the side wall of the flocculation tank by a certain distance. ; A duct, which is arranged in the vertical direction, the bottom of the duct passes through the top of the flocculation tank, extends to the center of the deflector, and is separated from the bottom of the deflector by a certain distance, and is used for introducing flocculant into the deflector ; A second water pipe, one end of which communicates with the lower part of the first sedimentation tank and is located above the long arm of the siphon pipe, and the other end passes through the side wall of the flocculation tank and communicates with the conduit. The second water pipe There is a first valve on it; In the second sedimentation tank, a third sewage outlet is arranged on the side wall of the lower part, and a packing layer is arranged in the second sedimentation tank. Above, the height of the top surface of the packing layer is lower than the height of the top of the guide plate, and the part located below the packing layer in the second sedimentation tank is communicated with the flocculation tank; mixing pool; A third water pipe, one end of which is communicated with the part located above the packing layer in the second sedimentation tank, and the other end is communicated with the mixing tank, and the third water pipe is provided with a second valve; a fourth water pipe, one end of which is communicated with the mixing tank, and the other end extends into the body of the fish pond, and a water pump is arranged on the fourth water pipe; The fifth water pipe, one end of which is communicated with the interior of the mixing tank, is used for introducing purified water into the mixing tank, and a third valve is arranged on the fifth water pipe. 2. The circulating water fish pond as claimed in claim 1, wherein the water circulation device further comprises: The filter screen is arranged in the first sedimentation tank, and divides the interior of the first sedimentation tank into two chambers from top to bottom, the long arm of the siphon pipe passes through the filter screen, and one end of the second water pipe is located in the filter screen. above the net. 3 . The circulating water fish pond according to claim 2 , wherein the height of one end of the second water pipe is higher than the height of the other end of the second water pipe. 4 . 4. The circulating water fish pond as claimed in claim 1, wherein the water circulation device further comprises: The first pipe body is arranged in the vertical direction, the upper part of the first pipe body is located in the mixing tank, the bottom of the first pipe body passes through the bottom of the mixing tank, and the oxygen or air inlet is formed by the bottom of the first pipe body, and the first pipe body is formed. One end of the five water pipes and the other end of the third water pipe are respectively fixedly connected with the side wall of the upper part of the first pipe body, and communicated with the interior of the first pipe body; A plurality of second pipe bodies are arranged at intervals along the circumferential direction of the first pipe body and are located in the mixing tank, and one end of each second pipe body is connected to the side wall of the lower part of the first pipe body It is fixedly connected and communicated with the inside of the first pipe body, and the other end extends upward. 5. The circulating water fish pond as claimed in claim 4, wherein the water circulation device further comprises: The third pipe body is annular, the other end of each second pipe body is connected to the third pipe body, and communicates with the interior of the third pipe body, and the third pipe body and the fourth water pipe Connected. 6. The circulating water fish pond as claimed in claim 1, wherein the water circulation device further comprises: a baffle plate, which is L-shaped and consists of a vertically arranged first plate body and a horizontally arranged second plate body, the first plate body is parallel to the two side walls spaced along the width direction of the fermentation tank, And separated by a certain distance, and opposite to the other end of the first water pipe, the second plate body is provided with a plurality of through holes at intervals, and the three sides of the second plate body that are not connected with the first plate body are respectively connected with the three sides of the fermentation tank. The side walls are seamlessly connected, the short arm of the siphon pipe is inserted into the area enclosed by the baffle and the fermentation tank, and is located above the second plate body, and the first sewage outlet is located below the second plate body. 7. The circulating water fish pond according to claim 6, wherein the top of the fermentation tank is detachably connected to its side wall, and the top of the first plate body is in contact with the top of the fermentation tank; A first support block is fixed on one of the two side walls spaced along its width direction, a second support block is fixed on the other side wall, and the second plate body rests on the first support block and on the second support block, the first support block and the second support block do not seal the plurality of through holes, and both the first support block and the second support block are connected to the fermentation tank along its length. The two side walls arranged at intervals in the direction are separated by a certain distance, and a limit is fixed on the opposite side of the first plate body and one of the two side walls arranged at intervals along the width direction of the fermentation tank. a rod, and the limit rod is in contact with one of the two side walls spaced along the width direction of the fermentation tank. 8 . The circulating water fish pond according to claim 1 , wherein a feeding device is provided on the top of the conduit, and the feeding device is located above the flocculation tank for adding flocculant into the conduit. 9 . 9. The circulating water fish pond as claimed in claim 2, wherein the top of the first settling tank is detachably connected to its side wall, the top of the second settling tank is detachably connected to its side wall, and the The top is removably attached to its side walls. 10. The circulating water fish pond according to claim 9, characterized in that, an annular first stop block is fixed on the long arm of the siphon pipe, and an inner side wall of the lower part of the first sedimentation tank is fixed on the long arm. An annular second limit block is fixed, the filter screen is sandwiched between the first limit block and the second limit block, and the first limit block and the second limit block are fixed. The bit block does not seal the mesh on the filter.

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