Aquaculture circulating water system

Abstract

The utility model relates to the technical field of aquaculture, and discloses an aquaculture circulating water system which comprises an aquaculture pond and a filtering system, and the filtering system comprises a first tank body, a second tank body, a first filtering module and a second filtering module; water on the middle upper layer or the upper layer in the culture pond is filtered by the first filtering module and then enters the first tank body; a water body on the middle lower layer or the lower layer in the culture pond is filtered by the second filtering module and then enters the second tank body; the first tank body is communicated with the second tank body; and water in the first tank body and the second tank body flows back to the culture pond through the first pump. The circulating water system can clean floating objects and sediments in the culture pond and keep the water quality of the culture pond stable, and meanwhile, workers can clean impurities conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, in particular to an aquaculture circulating water system. Background Art

[0002] Aquaculture is the production activity of breeding, cultivating and harvesting aquatic plants and animals under human control. It generally includes the whole process of growing aquatic products from seedlings under artificial breeding and management. Aquaculture has become a major industry. In the process of aquaculture, a large amount of water is needed. The quality of water is directly related to the yield and quality of aquatic organisms. When breeding, water needs to be filtered to ensure the clean water quality and improve the survival rate of aquaculture.

[0003] The current circulating water system generally extracts water from the bottom of the breeding pond, filters it, and then transports it back to the breeding pond. In this way, the sediment impurities in the breeding pond can be cleaned, such as leftover feed, feces of the breeding animals, and the cuticle of the breeding animals. However, floating impurities (such as leaves, algae, oil film, etc.) on the surface of the breeding pond cannot be cleaned, resulting in gradual lack of oxygen in the breeding pond or preventing sunlight from reaching the breeding pond, thereby affecting the water quality and dissolved oxygen content, and further affecting the growth of the breeding animals.

[0004] CN201721505125 discloses a circulating water filtration aquaculture equipment, including a culture pond, an aerator, an oxygen delivery pipe, a sterilizing lamp, a pond body, a circulating water pump, a circulating water pipe, a sterilizing pond and a purifying device, wherein a temperature sensor is provided at the top of the culture pond and a filter plate is provided at the left side, a circulating water pipe connected to the pond body is provided at the bottom of the culture pond, a circulating water pump is provided at the top of one end of the circulating water pipe, a heating plate and a cooling plate are provided at the other end of the circulating water pipe, a water delivery pipe is provided at the lower left end of the culture pond, and a purifying device is provided on the water delivery pipe, the purifying device is connected to the purifying pond through a water pipe, a sterilizing pond is provided on the left side of the purifying pond, and a layer of activated carbon adsorption layer is provided in the sterilizing pond, and the pond body is connected to the sterilizing pond through a sewage suction device; the water resources are circulated and reused by setting multiple filtering devices such as the sterilizing device, the purifying device and the activated carbon adsorption layer, saving the waste of water resources. However, since the floating objects in the culture pond cannot be cleaned, it is not conducive to the growth of the cultured objects in the culture pond in the long run.

[0005] The technical problem to be solved by the utility model is: how to clean the floating objects and sediments in the breeding pond, keep the water quality in the breeding pond stable, and enable the breeding objects to grow stably. Utility Model Content

[0006] The main purpose of the utility model is to provide an aquaculture circulating water system, which filters floating objects on the surface of the culture pool through the first filter module to keep the surface of the culture pool clean. Then, the sediment in the culture pool is collected and filtered through the second filter module, so as to keep the inside of the culture pool clean. By collecting floating objects and sediments, the water quality of the culture pool is kept stable.

[0007] To achieve the above objectives, the technical solutions adopted in this application are:

[0008] An aquaculture circulating water system comprises a culture pond and a filtering system, wherein the filtering system comprises a first tank body, a second tank body, a first filtering module and a second filtering module; water in the upper middle layer or the upper layer of the culture pond is filtered by the first filtering module and then enters the first tank body; water in the lower middle layer or the lower layer of the culture pond is filtered by the second filtering module and then enters the second tank body; the first tank body and the second tank body are connected; water in the first tank body and the second tank body flows back to the culture pond through a first pump.

[0009] Compared with the prior art, this solution has the following beneficial effects:

[0010] The aquaculture circulating water system of this case filters the water in the upper and lower layers of the aquaculture pond through the first filtration module and the second filtration module respectively, and adopts different filtration methods according to the characteristics of different impurities contained in different water layers, thereby improving the filtration effect.

[0011] Secondly, a partition is set in the second tank body, and the partition cooperates with the second filter module to make the sediment of the lower water body settle in the impurity collection area, which is convenient for the staff to clean. In addition, the first tank body and the second tank body are connected, and a valve is set between the first tank body and the second tank body. When cleaning the lower water body, the water in the second tank body will flow to the first tank body and then flow back to the breeding pool. In this way, the breeding pool can always clean the upper water body, and the staff can also clean the impurities in the impurity collection area when not filtering the lower water body of the breeding pool, which will not affect the continuous filtering of the upper water body of the breeding pool by the first filter module. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a connection diagram of the aquaculture circulating water system of Example 1;

[0013] Figure 2 This is a schematic structural diagram of the second tank body of Example 1. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the present application implemented as described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Example 1

[0016] refer to Figure 1-2 A circulating water system for aquaculture includes a culture pond 1 and a filtering system, wherein the filtering system includes a first tank body 2, a second tank body 3, a first filtering module 4, and a second filtering module 5; the water in the middle and upper layers or the upper layer of the culture pond 1 is filtered by the first filtering module 4 and then enters the first tank body 2; the water in the middle and lower layers or the lower layer of the culture pond 1 is filtered by the second filtering module 5 and then enters the second tank body 3; the first tank body 2 and the second tank body 3 are connected; the water in the first tank body 2 and the second tank body 3 flows back to the culture pond 1 through the first pump 6.

[0017] In this embodiment, the impurities in the water body in the upper or middle layer of the culture pond 1 mainly include floating objects such as leaves, algae, microorganisms (such as mosquito or other insect larvae), while the water body in the lower or middle layer mainly includes sediments such as feces and residual feed of the cultured animals. In view of different impurities in different water layers, the first filter module 4 can use one or more combinations of filter nets, filter cotton 42, volcanic rocks, activated carbon, etc. to filter the water body in the upper or middle layer of the culture pond 1, and the second filter module 5 can use filter nets or drum filter elements with suitable meshes for filtering.

[0018] The specific working process of the circulating water system is as follows: the upper water body of the breeding pond 1 flows into the first filtering module 4, the first filtering module 4 filters the impurities in the upper water body, after the filtering is completed, the upper water body flows into the first tank body 2, the first pump 6 pumps the water in the first tank body 2 back to the breeding pond 1, and the upper water body of the breeding pond 1 is circulated and cleaned; the lower water body of the breeding pond 1 flows into the second filtering module 5, the second filtering module 5 filters the impurities in the lower water body, after the filtering is completed, the lower water body flows into the second tank body 3, and then flows into the first tank body 2, the first pump 6 pumps the water in the first tank body 2 back to the breeding pond 1, but the first pump 6 can also be provided with another pipeline directly connected to the second tank body 3 according to actual conditions, so that the water in the second tank body 3 flows back to the breeding pond 1.

[0019] It should be noted that the advantages of connecting the first tank 2 and the second tank 3 are as follows: 1. When the first pump 6 is connected to the first tank 2 and the second tank 3 at the same time, since the filtering period of the lower water body is relatively long, and the filtering of the upper water body is always working, if they are not connected, the second tank 3 has no water, which leads to a waste of part of the power of the first pump 6. 2. When the first pump 6 is only connected to the first tank 2, the first tank 2 and the second tank 3 will be equivalent to forming a communicating vessel, and the water in the second tank 3 will be completely pumped out as long as the water in the first tank 2 is completely pumped out.

[0020] Preferably, the water in the upper middle layer or the upper layer enters into the first tank body 2 through overflow or the second pump; the water in the lower middle layer or the lower layer enters into the second tank body 3 through the third pump 7.

[0021] In this embodiment, the water in the middle and upper layers or the upper layers preferably enters the first tank body 2 through overflow, and an overflow port can be provided on the side of the culture pond 1, the overflow port is connected to the first tank body 2, or the first tank body 2 is provided with a pipeline extending from the inside of the culture pond 1 to the upper water body of the culture pond 1. In this way, the first filter module 4 can continuously clean the upper water body of the culture pond 1. The water in the middle and lower layers or the lower layers enters the second tank body 3 through the third pump 7. When the staff turns on the third pump 7, the lower water body of the culture pond 1 is filtered and circulated. It takes a period of time to wait for the impurities in the lower water body to settle before filtering and circulating the lower water body of the culture pond 1.

[0022] Preferably, the first tank body 2 is provided with a first pipe 21; the first filter module 4 is arranged on the first pipe 21; the free end of the first pipe 21 extends to the upper middle layer or the upper layer of the breeding pond 1; and a precision filter 8 is provided between the first tank body 2 and the first pump 6.

[0023] In this embodiment, the end face of the first pipe 21 is parallel to the liquid surface of the culture pond 1, so that the upper water of the culture pond 1 can better enter the first filter module 4. A precision filter 8 is arranged between the first tank 2 and the first pump 6. After the water in the culture pond 1 is filtered by the first filter module 4 and the second filter module 5, the precision filter 8 is used to filter it again, so as to further maintain the stability of the water quality in the culture pond 1.

[0024] Preferably, the first filter module 4 includes a net bag type filter 41 and filter cotton 42 ; the net bag type filter 41 and filter cotton 42 are respectively detachably connected to the first pipe 21 .

[0025] In this embodiment, the first filter module 4 adopts a double filtering method, and a detachable net bag filter 41 is set at the port of the first pipe 21 or the position away from the breeding pool 1 to collect leaves and algae. The upper water of the breeding pool 1 is filtered by the net bag filter 41 and then filtered by the filter cotton 42 to filter out the microorganisms in the upper water. The detachable installation method is convenient for the staff to clean and replace the net bag filter 41 and the filter cotton 42.

[0026] Preferably, a valve 9 is provided between the first tank body 2 and the second tank body 3 ; the valve 9 is used to prevent the water in the first tank body 2 from flowing into the second tank body 3 .

[0027] In this embodiment, by setting the valve 9, the water in the second tank body 3 can flow to the first tank body 2, while the water in the first tank body 2 cannot flow to the second tank body 3. In this way, it can be achieved that the upper water body of the breeding pool 1 is always filtered, and the lower water body of the breeding pool 1 can be cleaned regularly, and the cleaning of the two does not affect each other. Moreover, when the staff cleans the impurities in the second tank body 3, there is no need to suspend the filtering work of the upper water body of the breeding pool 1, thereby improving efficiency.

[0028] Preferably, the valve is a one-way valve 9 .

[0029] Preferably, a partition 31 is provided in the second tank body 3; the partition 31 and the inner wall of the second tank body 3 form an impurity collection area 32; the second filter module 5 is a filter screen; the mesh of the filter screen can be a 250-mesh PP material filter screen, or it can be selected according to actual conditions. The filter screen is set on the partition 31; the filter screen cooperates with the partition 31 to allow impurities to settle in the impurity collection area 32.

[0030] In this embodiment, the partition 31 and the inner wall of the second tank body 3 form an impurity collection area 32. The outline of the impurity collection area 32 is preferably arc-shaped, but it does not exclude the possibility of choosing a circle, square, rectangle or polygon; the filter net is arranged on the partition 31 along the outline of the impurity collection area 32.

[0031] After the water in the lower layer of the breeding pond 1 enters the second filter module 5, the water will pass through the second filter module 5 into the second tank 3, and the impurities will slide along the inner wall of the second filter module 5 to the impurity collection area 32, which is convenient for the staff to clean the impurities. A sewage pipe can also be set in the impurity collection area 32 to discharge the impurities in the impurity collection area 32.

[0032] Preferably, the bottom of the culture pond 1 is a gradually narrowing end 11 ; the end of the gradually narrowing end 11 is connected to the second tank body 3 .

[0033] In this embodiment, the bottom of the breeding pond 1 is a gradually narrowing end 11, which allows the sediment to move downward along the inner wall of the breeding pond 1 under the action of water flow and its own gravity, and enter the second filter module 5 from the top of the second tank body 3, thereby completing the cleaning of the sediment.

[0034] Preferably, the impurity collection area is provided with a sewage pipe 321; and the sewage pipe 321 is provided with a switch.

[0035] In this embodiment, the switch is preferably a stop valve, and other switches that prevent the impurities and water in the second tank from flowing out of the sewage pipe can also be selected. The staff can discharge the impurities in the impurity collection area through the sewage pipe 321.

[0036] Preferably, the filter screen is a stainless steel filter screen with a mesh size of 200 to 300.

[0037] In this embodiment, the filter screen adopts a 200-mesh stainless steel filter screen, which can isolate most fish feces, and the use of stainless steel can increase the service life of the filter screen.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aquaculture circulating water system, comprising a culture pond and a filtration system, characterized in that: The filtration system includes a first tank body, a second tank body, a first filtering module, and a second filtering module; the water in the upper middle layer or the upper layer of the breeding pond is filtered by the first filtering module and then enters the first tank body; the water in the lower middle layer or the lower layer of the breeding pond is filtered by the second filtering module and then enters the second tank body; the first tank body and the second tank body are connected; the water in the first tank body and the second tank body flows back to the breeding pond through the first pump.

2. The aquaculture circulating water system according to claim 1, characterized in that: The water in the upper middle layer or the upper layer enters into the first tank body through overflow or the second pump; the water in the lower middle layer or the lower layer enters into the second tank body through the third pump.

3. The aquaculture circulating water system according to claim 1, characterized in that: The first tank body is provided with a first pipeline; the first filter module is arranged on the first pipeline; the free end of the first pipeline extends to the upper middle layer or the upper layer of the breeding pond; a precision filter is provided between the first tank body and the first pump.

4. The aquaculture circulating water system according to claim 3, characterized in that: The first filter module includes a net bag type filter and filter cotton; the net bag type filter and filter cotton are respectively detachably connected to the first pipe.

5. The aquaculture circulating water system according to claim 1, characterized in that: A valve is provided between the first tank body and the second tank body; the valve is used to prevent water in the first tank body from flowing to the second tank body.

6. The aquaculture circulating water system according to claim 5, characterized in that: The valve is a one-way valve.

7. The aquaculture circulating water system according to claim 1, characterized in that: A partition is provided in the second tank body; the partition and the inner wall of the second tank body form an impurity collection area; the second filter module is a filter net; the filter net is arranged on the partition; the filter net cooperates with the partition to allow impurities to settle in the impurity collection area.

8. The aquaculture circulating water system according to claim 1, characterized in that: The bottom of the breeding pond is a gradually narrowing end; the end of the gradually narrowing end is communicated with the second tank body.

9. The aquaculture circulating water system according to claim 7, characterized in that: The impurity collection area is provided with a sewage pipe; the sewage pipe is provided with a switch.

10. The aquaculture circulating water system according to claim 7, characterized in that: The filter screen is a stainless steel filter screen with mesh sizes of 200 to 300.

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