CN217025393U - Immersion type aquaculture pond water purification device - Google Patents

Abstract

The application provides an immersion aquaculture pond water purification device, includes: the device comprises a sealed immersion box body structure, wherein the immersion box body structure is immersed into the water of the culture pond, a water purification treatment space is arranged inside the immersion box body structure, mesh wire bags are stacked layer by layer in the water purification treatment space along the height direction of the water purification treatment space, and water purification substances are filled in the mesh wire bags; the bottom of the immersion box body structure is connected with a sewage inlet device and a purified water discharge device, one end of the sewage inlet device extends into the water body of the culture pond, and the other end of the sewage inlet device is communicated with the internal water quality purification treatment space of the immersion box body structure; and the water discharge end of the purified water discharge device is communicated with the internal water quality purification treatment space of the immersion type box body structure. In this application device immerses the breed pond water body, need not to dispose extra water treatment pond separately, reduce the waste in extra supporting space of breed and place, sewage purification is effectual, reduces the human labor.

Description

Immersion type aquaculture pond water purification device

Technical Field

The application relates to the technical field of water purification devices, in particular to a water purification device for an immersion type aquaculture pond.

Background

At present, an aquaculture pond generally adopts a mode that sewage is directly discharged or a sewage treatment sedimentation tank is arranged near the aquaculture pond, the aquaculture sewage is treated and precipitated for a short time and then discharged, and meanwhile, underground water or other water sources are pumped and supplemented to the pond. If the water is required to be purified and then reused, one or more small ponds are generally matched near the pond for precipitating, treating and filtering the sewage discharged after the culture, and the sewage is pumped back to the culture pond after the purification treatment of the sewage is finished.

The existing aquaculture pond water purification treatment modes require one or more small sedimentation treatment filter ponds to be established near the aquaculture pond in a matching way for purifying and treating aquaculture sewage (including discharging or recycling). Both of these methods require more space for cultivation or additional space. And the current water quality treatment mode mainly adopts modes such as natural sedimentation, physical filtration, biodegradable purification, and the quality of water purifying effect is slow, and at the bottom of a large amount of aquatic filth and degradation deposit pond, needs the later stage manual work to carry out operations such as pond clearance, and the cost of labor is higher.

Therefore, how to provide a water quality purification device for an aquaculture pond, which does not need to be additionally provided with an additional water quality treatment pond, reduces the waste of additional aquaculture matching space and field, has good water quality purification effect and reduces the manpower and labor, is a technical problem still to be solved at present.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an immersion aquaculture pond water purification device, the device need not to dispose extra water treatment pond separately in immersing aquaculture pond water body, reduces the waste in extra breed assorted space and place, and sewage purification is effectual, reduces human labor.

In order to achieve the above object, the present application provides an immersion type aquaculture pond water purification device, comprising: the device comprises a sealed immersion box body structure, wherein the immersion box body structure is immersed into the water of the culture pond, a water purification treatment space is arranged inside the immersion box body structure, mesh wire bags are stacked layer by layer in the water purification treatment space along the height direction of the water purification treatment space, and water purification substances are filled in the mesh wire bags; the bottom of the immersion box body structure is connected with a sewage inlet device and a purified water discharge device, one end of the sewage inlet device extends into the water body of the culture pond, and the other end of the sewage inlet device is communicated with the internal water quality purification treatment space of the immersion box body structure; and the water discharge end of the purified water discharge device is communicated with the internal water quality purification treatment space of the immersion type box body structure.

As above, wherein, sewage inlet device's sewage water inlet is located the headspace in water purification treatment space, sewage water inlet exhaust sewage is from the upper strata the netted line bag gets into the lower floor in proper order the netted line bag utilizes multiple different filter media to carry out purification treatment such as physics filtration, adsorption purification or biodegradable water purification material to sewage after, the water purification gathering after will handling is in the bottom space in water purification treatment space, the bottom space in water purification treatment space is separated by immersion box structure bottom separation empty support.

The sewage inlet device comprises a sewage inlet pipe and an inlet extension pipe, wherein the sewage inlet pipe is communicated with the inlet extension pipe; the sewage inlet pipe is arranged outside the immersion type box body structure and extends outwards along a first opening at the bottom of the immersion type box body structure; the water inlet extension pipe is arranged inside the immersion type box body structure and extends upwards to the top space of the water quality purification treatment space along the first opening at the bottom of the immersion type box body structure.

The above, wherein the inlet extension pipe extends upwards along the first opening at the bottom of the submerged tank structure, and the height of the upper outlet of the inlet extension pipe is 20-30cm below the water surface, and the top of the submerged tank structure is higher than the water surface of the aquaculture pond.

As above, wherein the end of the sewage inlet pipe extending out of the submerged tank structure is connected with a floating body; the water inlet of the sewage inlet pipe is provided with a water suction head with a coarse strainer to prevent large-scale sundries from entering the pipeline.

As described above, the highest surface of the stack of the mesh wire bags is located below the top of the immersion type box structure, the highest point of the stack of the mesh wire bags is lower than the water surface of the aquaculture pond, and the distance between the highest surface of the stack of the mesh wire bags and the water surface of the aquaculture pond ranges from 30cm to 50 cm.

The above, wherein a spacing bracket is placed at the bottom inside the submerged tank structure, and the mesh wire bag is positioned above the spacing bracket.

As above, the purified water discharge device includes a drain pipe and a drain pump, the water inlet end of the drain pipe is located at the lower part of the partition support, the drain pipe extends out from the second opening at the bottom of the immersion box structure and extends to the bank of the aquaculture pond, the drain pipe is connected to the drain pump on the pipeline extending out from the immersion box structure, and the water outlet of the drain pipe is connected to the bank side channel, so that the treated purified water naturally flows back to the aquaculture pond along the bank side channel.

As above, wherein, the mesh bag contains a plurality of different water quality purifying substances, the water quality purifying substances include physical filtering substances, adsorption purifying substances and/or biodegradation water quality purifying substances.

As above, wherein the sewage inlet pipe is a hose.

The beneficial effect that this application realized as follows:

(1) this application takes immersion box structure that impervious material made to arrange sewage purification treatment in the aquaculture pond in to avoid aquaculture pond water purification treatment to need occupy extra space and place, practice thrift space and place resource.

(2) This application utilizes the pressure of the water head production between the inside water level of immersion box structure and the aquaculture pond water (constantly extracting the bottom water purification through the drain pump), thereby make the inside water level of immersion box structure be less than outside pond water level all the time, the height that the interior filter media of immersion box structure piled up and the position of the interior sewer pipe delivery port of immersion box structure remain throughout and be less than pond surface of water certain distance simultaneously, can impress the sewage of pond bottom inside the immersion box structure automatically, and make sewage from last to carrying out purification treatment step by step down, moreover, the steam generator is simple in structure, and the purifying effect is good.

(3) This application is through various physics of netted line bag partial shipment filtration, absorption purification, biodegradable material, and successive layer is placed in immersion box structure, and netted line bag makes things convenient for artifical installation, change and washing etc. and the operation is comparatively convenient, uses manpower sparingly.

(4) This application utilizes the water purification after the continuous extraction immersion box structure bottom of drain pump is handled to keep the water head (water pressure) of the inside and outside aquaculture pond of immersion box structure, thereby constantly impress the sewage of aquaculture pond bottom in the immersion box structure and carry out purification treatment, guarantee the incessant processing of sewage, improve the treatment effeciency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a perspective view of a water purification device for an immersion type aquaculture pond according to an embodiment of the present application.

FIG. 2 is a top view of a water purifying device for an immersion type aquaculture pond according to an embodiment of the present application.

FIG. 3 is a perspective view illustrating a submerged tank structure according to an embodiment of the present invention.

Reference numerals are as follows: 1-immersion box structure; 2-water quality purification treatment space; 3-a mesh wire bag; 4-sewage water inlet device; 5-purified water discharging device; 6-a space bracket; 7-a floating body; 8-water surface; 11-a first opening; 12-a second opening; 41-sewage inlet pipe; 42-a water inlet extension pipe; 43-sewage inlet; 51-a drain pipe; 52-a draining pump; 71-cord.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 and 2, the present application provides a water purifying device for an immersion type aquaculture pond, comprising: the device comprises a sealed immersion box body structure 1, wherein the sealed immersion box body structure 1 is made of flexible waterproof materials and has the characteristic of water impermeability, the immersion box body structure 1 is immersed in water in a culture pond, a water quality purification treatment space 2 is arranged inside the immersion box body structure 1, mesh wire bags 3 are stacked in the water quality purification treatment space 2 layer by layer along the height direction of the water quality purification treatment space, and water quality purification substances are filled in the mesh wire bags 3; the bottom of the immersion tank body structure 1 is connected with a sewage inlet device 4 and a purified water discharge device 5, one end of the sewage inlet device 4 extends into the water body of the culture pond, and the other end is communicated with the internal water quality purification treatment space 2 of the immersion tank body structure 1; the water discharge end of the purified water discharge device 5 is communicated with the internal water quality purification treatment space 2 of the immersion type tank structure 1.

As a specific embodiment of the utility model, one end of the sewage inlet device 4 extends into the water body of the culture pond, and the other end is communicated with the top of the front end of the water quality purification treatment space 2; the water discharge end of the purified water discharge device 5 is communicated with the bottom of the rear end of the water quality purification treatment space 2.

As shown in FIG. 1, the sewage inlet 43 of the sewage inlet device 4 is located in the top space of the water purification space 2, the sewage discharged from the sewage inlet 43 sequentially enters the lower mesh-wire bag 3 from the upper mesh-wire bag 3 and is then processed into purified water, the purified water is collected in the bottom space of the water purification space 2, and the purified water is pumped out of the immersion type box body structure 1 through the purified water discharge device 5 and is replenished into the aquaculture pond.

As shown in fig. 1, the sewage inlet device 4 includes a sewage inlet pipe 41 and a water inlet extension pipe 42, and the sewage inlet pipe 41 is communicated with the water inlet extension pipe 42; the sewage inlet pipe 41 is provided outside the immersion tank structure 1 and extends outwardly along the first opening 11 at the bottom of the immersion tank structure 1; the inlet extension pipe 42 is disposed inside the immersion type tank structure 1, and the inlet extension pipe 42 is fixed to the inner wall of the immersion type tank structure 1 by a position fixing means and extends upward from the first opening 11 to the top space of the water purification treatment space 2 along the inner wall of the immersion type tank structure 1. Sewage enters the water inlet extension pipe 42 from the sewage inlet pipe 41 and then flows to the top layer of the mesh wire bag 3 from the water outlet of the water inlet extension pipe 42, and the sewage is purified by the multi-layer mesh wire bag 3 in sequence.

Preferably, the sewage inlet pipe 41 and the water inlet extension pipe 42 are connected through a turning elbow at the bottom of the tank body; the bottom box portion steering elbow is connected and arranged at the first opening 11, the bottom box portion steering elbow is connected with the first opening 11 in a sealing mode, and therefore external water of the immersion type box body structure 1 is prevented from entering the water quality purification treatment space 2 through the connection portion of the bottom box portion steering elbow and the first opening 11.

As shown in fig. 1-3, the water inlet extension pipe 42 extends upwards along the first opening 11 at the bottom of the submerged tank structure 1, and the upper end water outlet of the water inlet extension pipe 42 is located 20-30cm below the current 8 height of the water surface of the aquaculture pond, the top surface of the submerged tank structure 1 is higher than the water surface of the aquaculture pond, so as to prevent the surface water of the pond from directly flowing into the tank, and continuously maintain the water level difference inside and outside the submerged tank structure under the action of the drainage pump, thereby ensuring that the water level difference is formed between the water body in the submerged tank structure 1 and the aquaculture pond, the upper end water outlet of the water inlet extension pipe 42 is always lower than the water surface of the aquaculture pond by a certain distance, and ensuring that the water in the aquaculture pond naturally flows into the submerged tank structure 1 under the siphon action. There is not sewage between the upper end delivery port of the extension pipe 42 of intaking and the top surface of immersion box structure 1, the 1 inner space of immersion box structure and the pond water body of aquaculture form water head pressure difference, 1 inner space water pressure of immersion box structure is less than the water pressure of the 1 outside pond water of immersion box structure, the pond water of aquaculture is impressed sewage inlet pipe 41 and the extension pipe 42 of intaking with sewage from the water inlet department of sewage inlet pipe 41, sewage gets into immersion box structure 1 inside from the upper end delivery port department of the extension pipe 42 of intaking, then, behind the purification treatment of netted line bag 3, obtain the water purification, the water purification is taken out by water purification discharging equipment 5, and supply in the pond of aquaculture. The water purification discharging device 5 continuously pumps out the purified water, so that the water level difference between the inside of the immersion type box body structure 1 and the water body of the aquaculture pond is always kept, namely, the water pressure of the space inside the immersion type box body structure 1, which is smaller than the water body of the aquaculture pond outside the immersion type box body structure 1, always exists, and therefore the sewage at the bottom of the aquaculture pond is continuously pressed into the immersion type box body structure 1 for purification treatment.

This application utilizes the continuous water purification of extraction immersion box structure bottom processing back of drain pump to keep the inside water head (water pressure) with outside aquaculture pond of immersion box structure, thereby constantly impress the sewage of aquaculture pond bottom into the immersion box structure with the help of the siphon effect and carry out purification treatment, guarantee the incessant processing of sewage, improve the treatment effeciency.

As a specific embodiment of the utility model, if the purified water treated at the bottom of the immersion type box body structure is not extracted in time by the drainage pump, because the water outlet at the upper end of the water inlet extension pipe 42 is positioned 20cm-30cm below the current water surface 8 of the aquaculture pond, and the top surface of the immersion type box body structure 1 is higher than the water surface of the aquaculture pond, the water level pressure difference is ensured to be formed between the inside of the immersion type box body structure 1 and the water body of the aquaculture pond, the water in the water body of the aquaculture pond can still be pressed into the immersion type box body structure under the siphon action for purification treatment until the water in the immersion type box body structure 1 is more and more, and the water level pressure difference cannot be formed between the inside of the immersion type box body structure 1 and the water body of the aquaculture pond, and the sewage cannot enter the immersion type box body structure 1 for treatment.

Preferably, the bottom of the immersion tank structure 1 sinks to the bottom of the water in the aquaculture pond, and the top surface of the immersion tank structure 1 is higher than the water surface of the aquaculture pond.

As shown in fig. 1 and 2, the end of the sewage inlet pipe 41 extending outside the submerged tank structure 1 is connected to a float 7 by a wire 71. Preferably, the waste water inlet pipe 41 is a hose, i.e. a deformable and bendable pipe, and the hose may be a plastic hose. The floating body 7 is used for conveniently identifying the position of the water inlet of the sewage inlet pipe 41; by moving the floating body 7, the position of the water inlet of the sewage inlet pipe 41 can be conveniently moved. The position of the water inlet of the sewage inlet pipe 41 is moved, and sewage with the worst water quality deposited at the bottom of the aquaculture pond can be extracted from all places of the pond along the bottom of the pond. Preferably, the floating body 7 is a floating ball or a buoy.

Preferably, the water inlet of the sewage inlet pipe 41 is provided with a suction head with a coarse screen to prevent large impurities from entering the sewage inlet pipe 41.

Preferably, body 7 is connected with the migration operation line, and migration operation line one end is connected with body 7, and the other end is connected with the operating means on pond bank, through the length and the position of control migration operation line, can remove the position of body 7 to the position of the water inlet of convenient removal operation sewage inlet tube 41, with extend to the pond along the pond bottom and extract the sewage that deposits in aquaculture pond bottom quality of water worst everywhere. Preferably, the migration operation line includes two lines.

Preferably, the length of the wire rope 71 is adjusted according to actual needs, and the depth of the bottom of the aquaculture pond where the water inlet of the sewage inlet pipe 41 is located can be adjusted by adjusting the length of the wire rope 71. The water inlet of the sewage inlet pipe 41 is connected with a gravity block, and the gravity block can ensure that the water inlet of the sewage inlet pipe 41 sinks to the bottom of the water and cannot float out of the water. The water inlet of the sewage inlet pipe 41 is connected with the floating body 7 through the thread rope 71, the floating body 7 floats on the water surface, and the thread rope 71 pulls the water inlet of the sewage inlet pipe 41.

Preferably, the highest surface of the stacked mesh wire bags 3 is located 30cm-50cm below the current water surface 8 of the aquaculture pond, the highest surface of the stacked mesh wire bags 3 is located below the top surface of the immersion type box body structure 1, and the highest surface of the stacked mesh wire bags 3 is lower than the water outlet at the upper end of the water inlet extension pipe 42. The top surface of the immersion tank structure 1 is higher than the current water surface 8 of the aquaculture pond. The size and weight of the mesh string bag 3 are limited to facilitate manual handling and installation. Preferably, the multi-layered mesh-string bag 3 is fixed together by a binding which does not restrict the circulation of water. Wherein, each layer of mesh-wire bags 3 can comprise a plurality of rows or a plurality of columns of mesh-wire bags 3.

As shown in FIG. 1, a partition frame 6 is placed at the bottom of the immersion type tank structure 1, and the mesh bag 3 is placed above the partition frame 6. The height of the spacing bracket 6 ranges from 15 cm to 20 cm. Separate empty support 6 and be used for supporting multilayer netted line bag 3, guarantee that multilayer netted line bag 3 below has certain space that holds the water purification.

Specifically, the hollow frame 6 is a flat cubic structure formed by splicing a plurality of supporting plates, so that the hollow frame is conveniently supported below the multilayer mesh wire bags 3, and the top of the hollow frame 6 is open to allow purified water purified by the multilayer mesh wire bags 3 to enter the inner space of the hollow frame 6.

As shown in fig. 1-3, the purified water discharge device 5 includes a water discharge pipe 51 and a water discharge pump 52, the water inlet end of the water discharge pipe 51 is located inside the partitioned bracket 6, the water discharge pipe 51 extends from the second opening 12 at the bottom of the immersion type box structure 1, the extending portion of the water discharge pipe 51 extends to the bank of the aquaculture pond, the water discharge pipe 51 is connected to the water discharge pump 52 on the pipeline extending from the immersion type box structure 1, the water outlet of the water discharge pipe 51 is connected to the pond side water channel, the pond side water channel is arranged around the bank of the aquaculture pond, so that the treated purified water naturally flows back to the aquaculture pond along the pond side water channel, and the purified water circulated through the pond side water channel is exposed to oxygen (absorbs oxygen in the air), which is more beneficial for improving the water quality of the aquaculture pond. Preferably, the drain pipe 51 is a hose.

As an embodiment of the present invention, after the drainage pipe 51 extends from the inside of the hollow frame 6, it extends upwards along the inner wall of the submerged box structure 1 to leave the submerged box structure 1 and is connected with the drainage pump 52 at the bank of the aquaculture pond, the treated purified water pumped by the drainage pump 52 is drained into the annular channel around the pond, the annular channel can be provided with a plurality of drainage ports at all places of the pond and is selectively opened according to the requirement, the treated purified water is drained into the pond, and a slow circulation (water body stirring and water quality purification effect enhancement) around the pond is formed. Because the drain pump 52 continuously extracts the purified water at the bottom of the immersion tank structure 1 after treatment, the water level inside the immersion tank structure 1 is always lower than the current water level of the aquaculture pond, so that a water level difference is formed, the sewage at the bottom of the pond is continuously pressed into the immersion tank structure 1 by the movable sewage inlet pipe 41 (marked and moved by the floating body 7) placed along the bottom of the pond, and the water quality precipitation, filtration, purification and degradation treatment are carried out layer by layer from top to bottom. Thereby realizing the purification treatment of the water inside the aquaculture pond on the premise of not occupying additional space.

As a specific embodiment of the present invention, the string bag 3 contains a physical filtering material, an adsorption purification material or a biodegradable water purification material. The physical filtration substance, the adsorption purification substance or the biodegradation water quality purification substance are all substances in the prior art. The sewage is filtered, purified and treated by the reticular bag 3 which is filled with physical filtration, adsorption purification or biodegradation water quality purification substances. The physical filter material is for example activated carbon. Examples of the adsorption purification material include activated carbon, adsorption resin, zeolite, alumina, silica gel, and the like. The biodegradable water quality purifying substance is microorganism. A decontamination method for carrying out flocculation precipitation by using microorganisms or metabolites produced by the microorganisms.

As an embodiment of the present invention, the mesh bag 3 may contain a plurality of different water quality purification materials, including physical filtration materials, adsorption purification materials, or biodegradable water quality purification materials. The mesh bag 3 can contain a plurality of different physical filtering substances, a plurality of different adsorption purification substances and/or a plurality of different biodegradable water quality purification substances.

As a specific embodiment of the present invention, after a period of water purification treatment, when the purification effect is found to be reduced, that is, when the filtration adsorption and biodegradation efficiency is found to be reduced, and the water purification requirements cannot be met, the mesh wire bags 3 containing various physical filtration, adsorption purification and biodegradation substances placed in the submerged box structure 1 can be taken out one by one, and the material can be reused or directly replaced with new material after being manually cleaned and aired (the cleaned solid dirt can be used for agricultural fertilizer or other purposes).

The beneficial effect that this application realized as follows:

(1) this application takes immersion box structure that impervious material made to arrange sewage purification treatment in the aquaculture pond in to avoid aquaculture pond water purification treatment to need occupy extra space and place, practice thrift space and place resource.

(2) This application utilizes the pressure (constantly extracting bottom water purification through the drain pump) that the water head between the inside water level of immersion box structure and the aquaculture pond water produced, thereby make the inside water level of immersion box structure be less than outside pond water level all the time, the position of sewage pipe delivery port (the upper end delivery port of the extension pipe that advances promptly) in the height that the filter media piled up in the immersion box structure and the immersion box structure remains throughout to be less than pond surface of water certain distance simultaneously, can impress the immersion box structure inside with the sewage of pond bottom automatically, and make sewage from last to going on purification treatment step by step down, moreover, the steam generator is simple in structure, purifying effect is good.

(3) This application is through various physics of netted line bag partial shipment filtration, absorption purification, biodegradable material, and successive layer is placed in immersion box structure, and netted line bag makes things convenient for artifical installation, change and washing etc. and the operation is comparatively convenient, uses manpower sparingly.

(4) This application utilizes the water purification after the continuous extraction immersion box structure bottom of drain pump is handled to keep the inside water head (water pressure) with outside aquaculture pond of immersion box structure, thereby constantly impress the sewage of aquaculture pond bottom in the immersion box structure and carry out purification treatment, guarantee the incessant processing of sewage, improve the treatment effeciency.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an immersion type aquaculture pond water purification device which characterized in that includes: the device comprises a sealed immersion box structure, a water purification treatment space is arranged in the immersion box structure, mesh wire bags are stacked in the water purification treatment space layer by layer along the height direction of the water purification treatment space, and water purification substances are filled in the mesh wire bags; the bottom of the immersed box body structure is connected with a sewage inlet device and a purified water discharge device, one end of the sewage inlet device extends into the water body of the culture pond, and the other end of the sewage inlet device is communicated with the water quality purification treatment space; and the water discharge end of the purified water discharge device is communicated with the water quality purification treatment space.

2. The water purifying apparatus for an immersion type aquaculture pond of claim 1, wherein the sewage inlet of said sewage inlet device is located in the top space of said water purifying space, and the sewage discharged from said sewage inlet sequentially enters the lower mesh-wire bags from the upper mesh-wire bags to form purified water, and the purified water is collected in the bottom space of said water purifying space.

3. The water purification device for the immersion type aquaculture pond of claim 2, wherein said sewage inlet device comprises a sewage inlet pipe and an inlet extension pipe, said sewage inlet pipe is communicated with said inlet extension pipe; the sewage inlet pipe is arranged outside the immersion type box body structure and extends outwards along the first opening at the bottom of the immersion type box body structure; the water inlet extension pipe is arranged inside the immersion type box body structure and extends upwards to the top space of the water quality purification treatment space along the first opening at the bottom of the immersion type box body structure.

4. The water purification apparatus for immersion type aquaculture pond of claim 3, wherein said inlet extension pipe extends upward along the first opening of the bottom of said immersion type tank structure, and the height of the outlet of the upper end of said inlet extension pipe is 20-30cm below the water surface of the aquaculture pond, and the top of said immersion type tank structure is higher than the water surface of the aquaculture pond.

5. The immersion type aquaculture pond water purification device of claim 3, wherein the end of the sewage inlet pipe extending out of the immersion type tank body structure is connected with a floating body; the water inlet of the sewage inlet pipe is provided with a water suction head with a coarse strainer to prevent large impurities from entering the sewage inlet pipe.

6. The water quality purification device for the immersion type aquaculture pond of claim 1, wherein the highest surface of the stack of the mesh wire bags is located below the top of the immersion type tank structure, the highest point of the stack of the mesh wire bags is lower than the water surface of the aquaculture pond, and the distance between the highest surface of the stack of the mesh wire bags and the water surface of the aquaculture pond ranges from 30cm to 50 cm.

7. The water purification device for the immersion type aquaculture pond of claim 1, wherein a space bracket is placed at the bottom in the immersion type tank structure, and the mesh wire bag is positioned above the space bracket.

8. The water purification apparatus for immersion type aquaculture pond of claim 7, wherein said water purification discharging means comprises a water discharging pipe and a water discharging pump, the water discharging pipe has a water inlet end located at the lower part of the hollow frame, said water discharging pipe extends from the second opening at the bottom of the immersion type tank structure and extends to the shore of the aquaculture pond, said water discharging pipe is connected to said water discharging pump on the pipeline extending from the immersion type tank structure, and the water outlet of said water discharging pipe is connected to the pond side channel, so that the treated purified water naturally flows back to the aquaculture pond along the pond side channel.

9. The water purification apparatus for an immersion type aquaculture pond of claim 1, wherein said mesh bag contains a plurality of different water purification materials, said water purification materials including physical filtration materials, adsorption purification materials and/or biodegradable water purification materials.

10. The water purification device for the submerged culture pond of claim 3, wherein the sewage inlet pipe is a hose.

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