CN111903596B - Jet device and jet type water pushing and oxygen increasing system for indoor high-density shrimp pond and using method of jet device and jet type water pushing and oxygen increasing system - Google Patents
Jet device and jet type water pushing and oxygen increasing system for indoor high-density shrimp pond and using method of jet device and jet type water pushing and oxygen increasing system Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 306
- 241000238557 Decapoda Species 0.000 title claims abstract description 73
- 239000001301 oxygen Substances 0.000 title claims abstract description 40
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 230000001965 increasing effect Effects 0.000 title claims abstract description 29
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- 238000006213 oxygenation reaction Methods 0.000 claims description 34
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/047—Liquid pumps for aquaria
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention relates to an ejector and an ejection type water pushing and oxygen increasing system for an indoor high-density shrimp pond and a using method thereof, wherein the ejector and the ejection type water pushing and oxygen increasing system comprise the following steps: the suction piece and the pressure expanding piece; one end of the diffusion piece is connected with a water inlet, the other end of the diffusion piece is connected with a nozzle, the nozzle is connected with a suction piece in a matching mode, a mixing chamber is arranged inside the suction piece, the nozzle is communicated with the mixing chamber, and at least part of the nozzle is inserted into the mixing chamber; the ejector disclosed by the invention is optimized and improved in structure and performance aiming at an indoor high-density shrimp culture pond, the air-water ratio is improved, more bubbles are generated and the aeration efficiency is high; meanwhile, the device has the advantages of low manufacturing cost, simplicity and convenience in installation, no need of maintenance, long service life and the like.
Description
Technical Field
The invention relates to the field of water oxygenation or prawn culture, in particular to an ejector and an ejector type water pushing and oxygenation system for an indoor high-density prawn culture pond and a using method of the ejector and the ejector.
Background
The prawn culture has developed into a pillar industry of the aquaculture industry of China, wherein the penaeus vannamei is a main culture variety. However, in recent years, due to the problems of frequent diseases, environmental pollution and the like, the shrimp culture mode in the traditional outer ponds such as the soil ponds and the elevated ponds is greatly reduced in culture area and yield when the shrimps are cultured on the downhill. Meanwhile, indoor high-density shrimp culture modes are gradually increased, and large-batch warm sheds and workshop cement shrimp culture ponds are newly built and improved particularly in coastal regions of eastern mountains and Bohai sea in China.
The indoor shrimp culture pond mainly adopts a square pond, a circular pond and an annular runway pond, and the area of a single pond body is small and generally varies from dozens of squares to dozens of squares; but the density of the shrimp fries bred is very high, generally in 300-1000 per cubic water body, and is far higher than that of an earth pond and an elevated pond. Under the condition of high-density culture, the continuous and stable supply of dissolved oxygen in pond water is a prerequisite for ensuring the survival and healthy growth of prawns. The traditional common mechanical oxygen increasing modes such as a waterwheel type oxygen increasing machine, an impeller type oxygen increasing machine, a jet type oxygen increasing machine and the like are suitable for shrimp culture ponds of large water bodies, and the oxygen increasing efficiency is limited; at present, a micropore aeration oxygenation mode is adopted in indoor shrimp ponds more. The microporous aeration oxygenation mode is generally characterized in that an external air blower is used for inflating air and aeration is carried out through aeration stones or aeration pipes which are densely distributed in the shrimp pond, although the oxygen dissolving requirement of the high-density aquaculture water body of the shrimp pond can be met on the whole, the horizontal flow of the water body in the shrimp pond cannot be promoted, and dirt accumulation is easily formed at the local part of the bottom of the shrimp pond to spoil the water quality. Moreover, the aeration stone and the aeration pipe are easy to block or age and crack, the aeration effect is also influenced, and frequent maintenance and updating are needed.
On the other hand, in the high-density culture process, a large amount of feed input in the shrimp pond inevitably generates a large amount of culture wastes such as residual baits and excrement, and the organic wastes not only cause water eutrophication and breeding pathogenic bacteria, but also further decompose and generate harmful substances such as ammonia nitrogen, nitrite nitrogen and the like. Therefore, how to timely and effectively discharge the waste is a key problem to be solved in the indoor shrimp pond, and pollutants are controlled from the source. In the actual production, the sewage is sucked and discharged in a manual siphon mode, and the operation is time-consuming and labor-consuming; the sewage is discharged by adopting a large amount of water changing modes, so that not only is the water resource wasted, but also the external environment can be adversely affected. Therefore, a way for pushing the water body to flow so as to discharge the sewage in a centralized manner is needed to improve the collection capacity and discharge efficiency of the aquaculture waste, which is very important for ensuring the stable water quality and improving the success rate of aquaculture.
The jet aerator is a device which is developed based on the negative pressure jet principle and integrates high-efficiency oxygenation and water flow pushing, is widely applied to the field of water treatment and also begins to be introduced into the field of aquaculture. The prior art discloses an efficient venturi ejector like chinese utility model patent CN204490598U, and its product size is great, and the first minor diameter end diameter of efflux has 20 ~ 30mm, unsuitable small-size water, and the efflux water flows through by force moreover, produces the injury to breeding the shrimp easily. For another example, chinese patent CN103102021B discloses a high oxygen jet device, which adopts a unique radiation structure of multiple spray guns with small-bore spray heads, and can improve the jet efficiency, but only local circulation is generated around the jet device, which is not beneficial to the concentration and discharge of aquaculture waste in the whole aquaculture water body. For example, chinese patent CN102887594B discloses a jet device and a method and facilities for making water flow and increasing oxygen by using multiple jet devices, wherein a water pump, a water pipe network, an air supply pipe, and a jet device are all installed on the water surface or in the water, and these devices and facilities need to be fixed in the water by using buoys, etc., which brings inconvenience to the operation and maintenance. Moreover, when the device and the facility operate in a water body, the impact force of water flow generated in the pipeline can abrade or damage a water pipe network or an air supply pipe, and when the water pump is closed and stops operating, the culture waste can block the ejector, so that the water body is anoxic, and the culture fails directly.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides an ejector and an ejection type water pushing and oxygen increasing system for an indoor high-density shrimp pond and a using method thereof.
In order to achieve the purpose, the invention adopts a technical scheme that: an ejector for an indoor high-density shrimp pond, comprising: the suction piece and the pressure expanding piece;
one end of the diffusion piece is connected with a water inlet, the other end of the diffusion piece is connected with a nozzle, the nozzle is connected with a suction piece in a matching manner, a mixing chamber is arranged in the suction piece, the nozzle is communicated with the mixing chamber, and at least part of the nozzle is inserted into the mixing chamber;
the suction piece is of a three-way structure, one end of the suction piece is connected to the diffusion piece, the other end of the suction piece is provided with an air inlet, the third end of the suction piece is connected with a diffusion tube, and the nozzle, the mixing chamber and the diffusion tube are coaxially arranged.
In a preferred embodiment of the invention, the nozzle is of conical constriction with a constriction angle of 15-30 degrees.
In a preferred embodiment of the invention, the inner diameter of the nozzle is 5-10 mm.
In a preferred embodiment of the present invention, the inner sides of the water inlet and the air inlet are both provided with threads, and the inner diameters of the water inlet and the air inlet are both 32 mm.
In a preferred embodiment of the invention, the inner diameter of the diffusion pipe is 15-20mm, and the length of the diffusion pipe is 90-120 mm.
In order to achieve the above purpose, the second technical solution adopted by the present invention is: a jet type water-pushing oxygenation system for an indoor high-density shrimp culture pond comprises a culture pond, a sewage collecting sedimentation pond and a first jet device, wherein the sewage collecting sedimentation pond is connected to one side of the culture pond, the jet device is installed in the culture pond, the sewage collecting sedimentation pond is connected to the first jet device through a water main pipe, an arc-shaped plate is arranged in one side of the culture pond, at least one bulge is arranged on the inner side of the arc-shaped plate, and when a plurality of bulges are arranged, the plurality of bulges are distributed in the vertical direction to form an upper-layer bulge and a lower-layer bulge;
the water delivery is responsible for and is connected with at least one water delivery branch pipe, water delivery branch pipe end connection has the second ejector, first ejector with the second ejector is located breed the different degree of depth in pond, the bellied central point in first ejector upper strata puts, the bellied central point in second ejector efflux to lower floor puts.
In a preferred embodiment of the invention, one end of the water delivery branch pipe is connected with a loose joint, and the angle of the jet flow of the second jet device can be adjusted by the loose joint.
In a preferred embodiment of the present invention, the upper layer of protrusions can be one or more, the lower layer of protrusions can be one or more, and the protrusions can be hemispherical, spherical or cylindrical structures or boss structures.
In order to achieve the above purpose, the third technical solution adopted by the present invention is: a using method of a jet-type water-pushing oxygenation system used for an indoor high-density shrimp culture pond,
starting a circulating water pump, pumping upper-layer water of the sewage collection sedimentation tank, pumping the upper-layer water to a main water delivery pipe and a branch water delivery pipe after the upper-layer water is pressurized by the circulating water pump, and then entering a first ejector and a second ejector;
starting the first ejector and the second ejector to work, and starting oxygenation of the water body;
the first jet device jets flow to the center of the upper layer bulge to form water flow scattering, and the water flow shrinks through the arc-shaped plate to form upper layer opposite circulation;
the second jet device jets flow to the center of the lower layer bulge to form water flow scattering, and the water flow shrinks through the arc-shaped plate to form lower layer opposite circulation;
the upper layer of the circulation flow and the lower layer of the circulation flow make the water flow in the culture pond flow in a layered manner, so as to increase the oxygen of the water body in the culture pond.
In a preferred embodiment of the invention, the circulating water pump is arranged outside the culture pond, the water inlet end of the circulating water pump is connected to the upper part of the sewage collecting and settling pond through a water pumping pipe, and the water outlet end of the circulating water pump is connected to the main water conveying pipe.
In a preferred embodiment of the invention, the end part of the water delivery branch pipe is connected with a regulating valve, and the regulating valve can regulate the jet flow of the ejector so as to regulate the oxygen increasing amount of the water in the culture pond.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the ejector provided by the invention is optimized and improved in structure and performance aiming at an indoor high-density shrimp culture pond, the air-water ratio is improved, more and fine bubbles are generated, and the oxygenation efficiency is high; meanwhile, the device has the advantages of low manufacturing cost, simplicity and convenience in installation, no need of maintenance, long service life and the like.
(2) The jet-type water-pushing oxygenation system of the invention is provided with a plurality of ejectors by one prime power (circulating water pump), thus realizing the functions of oxygenation, flow making, sewage collection and water circulation in various aspects. The water in the high dissolved oxygen pond circularly flows in the shrimp culture pond, so that the stability and the balance of the water quality in the pond are kept, and anoxic dead corners are eliminated; on the other hand, the flowing pond water drives wastes such as residual baits, excrement and the like to the sewage discharge port, and then the wastes enter the sewage collecting and settling pond, so that the timely concentration and effective discharge of the breeding wastes are facilitated. Meanwhile, the water flow in the shrimp culture pond to a certain degree also accords with the biological habit of the prawns, is beneficial to the healthy growth of the prawns and enhances the culture effect. In addition, the water in the shrimp pond is recycled, so that water resources are effectively saved, and adverse effects on the environment are reduced.
(3) The circulating water pump used in the invention has adjustable power, the aerator has adjustable oxygenation strength and adjustable jet direction, and the system can be flexibly adjusted according to the actual requirements of the shrimp pond such as size, shape, prawn culture density, growth stage and the like during installation and use, thereby improving the power utilization efficiency to the maximum extent, reducing the operation energy consumption and achieving high efficiency, practicability, safety and controllability.
(4) Through the ejector to protruding structure efflux, rivers impact the arch and form certain rivers scattering, and rivers flow to protruding outward flange promptly, flow and strike the arc inner wall, carry out rivers shrink through the arc, make rivers flow along arc both sides inner wall, form the circulation of counter flow, and when rivers flow to breed pond opposite side, two water flows form the impact, make rivers take place the vibrations that remove, can improve rivers oxygenation intensity.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic partial perspective view of a preferred embodiment of the present invention;
fig. 2 is a cross-sectional view of an ejector of a preferred embodiment of the present invention.
Fig. 3 is a schematic view of the diffuser structure of the preferred embodiment of the present invention.
Fig. 4 is a schematic view of a partial structure of an oxygen increasing system according to a preferred embodiment of the present invention.
Fig. 5 is a schematic view of the ejector and protrusion position structure of the preferred embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an oxygenation system according to another embodiment of the invention.
Fig. 7 is a schematic water circulation diagram of the oxygen increasing system according to the preferred embodiment of the present invention.
Reference numerals are as follows:
1. the expanding and pressing piece 2, the suction piece 3, the air inlet 4, the gasket 5, the diffusion tube 6, the nozzle 7, the mixing chamber 8, the arc-shaped plate 9, the upper layer protrusion 10, the lower layer protrusion 11, the first ejector 12, the second ejector 13, the culture pond 14, the water pressure gauge 15, the regulating valve 16, the water delivery branch pipe 17, the water outlet 18, the water delivery main pipe 19, the water discharge pipe 20, the circulating water pump 21, the water pumping pipe 22 and the sewage collection sedimentation pond.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in figure 1, the invention discloses a partial three-dimensional structure schematic diagram of an ejector for an indoor high-density shrimp pond;
an ejector for an indoor high-density shrimp pond, comprising: the suction member 2 and the diffuser 1;
one end of the pressure expanding piece 1 is connected with a water inlet, the other end of the pressure expanding piece 1 is connected with a nozzle 6, the nozzle 6 is connected with an inhalation piece 2 in a matching way, a mixing chamber 7 is arranged in the inhalation piece 2, the nozzle 6 is communicated with the mixing chamber 7, and at least part of the nozzle 6 is inserted into the mixing chamber 7;
inhale 2 and be tee bend structure, inhale 2 one end and be connected to diffusion piece 1, inhale 2 other ends and be provided with air inlet 3, inhale 2 third end connection has diffusion tube 5, diffusion tube 5 passes through gasket 4 and inhales 2 intercommunications, and gasket 4 can play sealed effect, and nozzle 6, mixing chamber 7 set up with the axle center with diffusion tube 5.
It should be noted that the ejector of the invention is optimized and improved in structure and performance aiming at the indoor high-density shrimp culture pond, the air-water ratio is improved, the generated bubbles are more and exquisite, and the oxygenation efficiency is high; meanwhile, the device has the advantages of low manufacturing cost, simplicity and convenience in installation, no need of maintenance, long service life and the like.
The ejector is made of high-strength corrosion-resistant engineering plastic materials (such as POM and PVDF), the mold is used for batch production, specifically, the ejector is made of Polyformaldehyde (POM), but the ejector is not limited to the POM, and technical personnel in the field can replace the ejector conventionally according to the materials in the actual use process.
As shown in fig. 2, the present invention discloses a cross-sectional view of an ejector; as shown in fig. 3, the present invention discloses a schematic structural view of a diffuser 1;
in a preferred embodiment of the invention, the nozzle 6 is of conical constriction with a constriction angle of 15-30 degrees.
In a preferred embodiment of the invention, the nozzle 6 has an internal diameter of 5-10 mm.
In a preferred embodiment of the present invention, the inner sides of the water inlet and the air inlet 3 are both provided with threads, and the inner diameters of the water inlet and the air inlet 3 are both 32 mm.
In a preferred embodiment of the present invention, the inner diameter of the diffuser pipe 5 is 15 to 20mm, and the length of the diffuser pipe 5 is 90 to 120 mm.
Preferably, the inner diameter of the diffuser pipe 5 is 15mm or 20mm, and preferably, the length of the diffuser pipe 5 is 90mm, 100mm or 120 mm.
As shown in FIG. 4, the present invention discloses a schematic view of a local structure of an oxygenation system;
in order to achieve the above purpose, the second technical solution adopted by the present invention is: a jet type water-pushing oxygenation system for an indoor high-density shrimp culture pond comprises a culture pond 13, a sewage collecting sedimentation pond 22 and a first jet device 11, wherein the sewage collecting sedimentation pond 22 and the first jet device 11 are connected to one side of the culture pond 13;
the water delivery main pipe 18 is connected with at least one water delivery branch pipe 16, the end part of the water delivery branch pipe 16 is connected with a second ejector 12, the first ejector 11 and the second ejector 12 are positioned at different depths of the culture pond 13, the central position of the upper layer bulge 9 of the first ejector 11 is positioned, and the second ejector 12 jets to the central position of the lower layer bulge 10.
It should be noted that the jet-type water-pushing oxygenation system of the invention is composed of a prime power, namely a circulating water pump 20, wherein the circulating water pump 20 is a low-lift large-flow centrifugal pump and a variable frequency pump with the rated power of 1.5 or 2.2 kw. And a plurality of ejectors are arranged, so that various functions of oxygenation, flow generation, sewage collection and water circulation can be realized. The water in the high dissolved oxygen pond circularly flows in the shrimp culture pond, so that the stability and the balance of the water quality in the pond are kept, and anoxic dead corners are eliminated; on the other hand, the flowing pond water drives the wastes such as residual baits and excrement to the sewage discharge port, and then the wastes enter the sewage collecting and settling pond 22, so that the timely concentration and effective discharge of the breeding wastes are facilitated. Meanwhile, the water flow in the shrimp culture pond to a certain degree also accords with the biological habit of the prawns, is beneficial to the healthy growth of the prawns and enhances the culture effect. In addition, the water in the shrimp pond is recycled, so that water resources are effectively saved, and adverse effects on the environment are reduced.
As shown in fig. 5, the present invention discloses a schematic structural diagram of the ejector and the protrusion position;
specifically, through ejector to protruding structure efflux, rivers impact the protruding certain rivers scattering that forms, and rivers flow to protruding outward flange promptly, and 8 inner walls of impact arc flow through 8 rivers contractions of arc, make rivers flow along 8 both sides inner walls of arc, form the circulation of opposite flow, and when rivers flow to breeding 13 opposite sides in the pond, two water flows form the impact, make the vibrations that rivers take place to remove, can improve rivers oxygenation intensity.
In a preferred embodiment of the present invention, a loose joint is connected to one end of the water delivery branch pipe 16, and the angle of the jet flow of the second jet device 12 can be adjusted by the loose joint.
It should be noted that, every 4-6 meters on the main water pipe 18, the pipe diameter of the main water pipe 18 is 40-75mm, preferably, the pipe diameter of the main water pipe 18 is 40mm or 50mm or 63mm or 75mm, at least one branch water pipe 16 is tapped from the main water pipe 18, the pipe diameter is 32mm, and an ejector is installed below each branch water pipe 16.
Wherein, second ejector 12 horizontal installation is in the bottom of the pool, and the water inlet passes through outer silk, elbow and water delivery branch 16 intercommunication, and air inlet 3 passes through outer silk and intake pipe intercommunication, and the intake pipe stretches out on the surface of water, and as an option, the intake pipe still can be connected with pure oxygen pipe through the bypass, and pure oxygen pipe again with pure oxygen jar UNICOM.
Wherein, the loose joint connected with the upper end of the water delivery branch pipe 16 can rotate freely so as to adjust the jet direction of the jet device conveniently; the regulating valve 15 can control the water flow of the water delivery branch pipe 16 so as to flexibly regulate the jet strength of the jet device.
Wherein, the water pressure gauge 14 is arranged at the tail end of the water delivery main pipe 18 and used for indicating the water pressure in the water pipe network; the water delivery main pipe 18 is provided with a regulating valve 15 for regulating the water pressure in the water pipe network.
Aiming at an indoor high-density shrimp culture pond, the installation method of the jet-type water pushing and oxygen increasing system comprises the following steps:
step (1): according to the size and the shape of the shrimp pool, the model of the circulating water pump 20, the specification and the number of the ejectors, corresponding pipelines, accessories and the like are selected; determining the configuration and layout of a jet type water pushing and oxygen increasing system;
step (2): fixedly installing a circulating water pump 20 at a proper position outside the shrimp pond, extending the water inlet end of a water pumping pipe 21 to the upper part of a sewage collecting and settling tank 22 outside the shrimp pond, and connecting the water outlet end of the water pumping pipe 21 with the water inlet of the circulating water pump 20;
and (3): two or more main water conveying pipes 18 are connected from a water outlet of a circulating water pump 20, the main water conveying pipes 18 are fixed along the upper edges of the pond walls on two sides of the shrimp pond, branches are connected at intervals of 4-6 meters and are connected with a branch water conveying pipe 16 through a reducing tee joint, an adjusting valve 15 and a loose joint in sequence, and a water pressure gauge 14 is installed at the tail end of each main water conveying pipe 18;
and (4): the water delivery branch pipe 16 vertically extends to the bottom of the pool and is connected with the ejector through an elbow, an external thread, and the ejector is horizontally arranged at the bottom of the pool.
In a preferred embodiment of the present invention, the upper layer protrusions 9 can be one or more, the lower layer protrusions 10 can be one or more, and the protrusions can be in a hemispherical, spherical or cylindrical structure or a boss structure.
Production application example one: certain shrimp plant in Shanshan city of Guangdong province utilizes original square fillet abalone pool (side length 6 meters, the water depth 0.8 meters), and aeration stone and micropore aeration pipe have successively been adopted to aeration oxygenation mode, though the accessible improves peripheral hardware air-blower power and increases the aeration rate in order to satisfy breed the shrimp demand, nevertheless remains incomplete bait, excrement and urine all the time around aeration stone or the aeration pipe, has spoiled quality of water, has influenced the healthy growth of shrimp. Finally, a 1.1kw circulating water pump and 8 ejectors were configured according to the system described in the patent. When the biomass of the cultured Litopenaeus vannamei reaches 17 jin/cubic water, the dissolved oxygen concentration of the water can be maintained to be more than 4.8 mg/L; when the biomass of the cultured prawns reaches 11 jin/cubic water, the concentration of dissolved oxygen in the water can be maintained to be more than 5.5 mg/L.
As shown in FIG. 6, the present invention discloses another schematic structural view of the oxygen increasing system;
it should be noted that the culture pond 13 is an annular structure, and includes a water pumping pipe 21, a circulating water pump 20, a main water delivery pipe 18, a plurality of branch water delivery pipes 16, a plurality of ejectors, a water pressure gauge 14, a regulating valve 15, and the like. The water inlet end of the water pumping pipe 21 is positioned at the upper part of the shrimp pond outer sewage collecting and settling pond 22, the water outlet end of the water pumping pipe is connected with the water inlet of the circulating water pump 20, the water outlet of the circulating water pump 20 is connected with the two main water delivery pipes 184, the water pressure gauge 14 is installed at the tail end of one main water delivery pipe 18, the branch water delivery pipes 16 are arranged at intervals along the main water delivery pipes 184, the upper ends of the branch water delivery pipes are communicated with the main water delivery pipes 18 through loose joints, adjusting valves 15 and reducing tee joints in sequence, the lower ends of the branch water delivery pipes 16 are connected with jet ejectors, the bottom of the culture pond 13 is provided with a water outlet 17, the water outlet 17 is connected to the circulating water pump 20 through a water outlet 19, it needs to be noted that the culture pond is not limited to a square structure or an annular structure, and a person skilled in the art can adjust the culture pond to a circular structure or other shapes according to actual use.
Wherein, circulating water pump 20 is arranged on the ground outside the shrimp pond, and a low-lift large-flow centrifugal pump and a variable frequency pump with the rated power of 1.5 or 2.2kw are selected.
Wherein, the three main water pipes 18 are respectively fixed along the upper edges of the tank walls at the two sides of the shrimp culture tank and the middle water partition wall, and the pipe diameters are 63mm or 75 mm.
A water delivery branch pipe 16 is branched at intervals of 6 meters from the main water delivery pipe 18, the pipe diameter of the water delivery branch pipe is 32mm, and an ejector is installed below each water delivery branch pipe 16.
The ejector is horizontally arranged at the bottom of the pool, the water inlet is communicated with the water delivery branch pipe 16 through an outer thread and an elbow, the air inlet 3 is communicated with the air inlet pipe through the outer thread, and the air inlet pipe extends out of the water surface. Simultaneously, intake pipe accessible bypass and pure oxygen union coupling, pure oxygen pipe again with pure oxygen jar UNICOM.
The loose joint connected with the upper end of the water delivery branch pipe 16 can rotate freely so as to adjust the jet direction of the jet device 1 conveniently; the regulating valve 15 can control the water flow of the water delivery branch pipe 16 so as to flexibly regulate the jet strength of the jet device.
The water pressure gauge 14 is arranged at the tail end of the water delivery main pipe 18 and used for indicating the water pressure in the water pipe network; the main water pipe 18 is provided with a regulating valve 15 for regulating the water pressure in the water pipe network.
Further, an installation method of the jet type water pushing and oxygen increasing system is provided, which comprises the following steps:
step (1): selecting the model of the circulating water pump 20, the number of ejectors, corresponding pipelines, accessories and the like according to the size of the culture pond 13; determining the configuration and layout of a jet-type water pushing and oxygen increasing system;
step (2): fixedly installing a circulating water pump 20 at a proper position outside the shrimp culture pond, extending the water inlet end of a water pumping pipe 21 to the upper part of a sewage collecting and settling tank 22 outside the shrimp culture pond, and connecting the water outlet end of the water pumping pipe 21 with the water inlet of the circulating water pump 20;
and (3): three main water conveying pipes 18 are connected from a water outlet of a circulating water pump 20, the two main water conveying pipes 18 are fixed along the upper edges of the two side walls of the shrimp culture pond, the other main water conveying pipe 18 is fixed along the upper edge of the middle water-stop wall of the shrimp culture pond, branches are distributed at equal intervals of 6 meters and are connected with a branch water conveying pipe 16 sequentially through a reducing tee joint, an adjusting valve 15 and a loose joint, and a water pressure meter 14 is installed at the tail end of the main water conveying pipe 18;
and (4): the water delivery branch pipe 16 vertically extends to the bottom of the pool and is connected with the ejector through an elbow, an external thread, and the ejector is horizontally arranged at the bottom of the pool.
Still further, the use method of the jet-type water pushing and oxygen increasing system comprises the following steps:
step (A): starting a circulating water pump 20, pumping the upper water layer of the sewage collecting sedimentation tank 22, pressurizing by the circulating water pump 20, pumping out, and then entering the ejector through a main water delivery pipe 18 and a branch water delivery pipe 16;
step (B): opening the regulating valve 15 on the water delivery branch pipe 16, starting the ejector to work, starting oxygenation of the water body, and regulating the regulating valve 15 to control oxygenation strength;
step (C): the movable joint on the water delivery branch pipe 16 is rotated to adjust the jet direction of the jet device, so that the water body generates directional flow along the runway;
step (D): after the system is operated, the flowing pond water drives the cultivation waste to a drainage/sewage port, the pond water carries the waste to enter a sewage collecting and settling pond 22 through a drainage/sewage pipe, the bottom deposited waste in the sewage collecting and settling pond 22 can be discharged at regular time, and the pond water on the upper layer of the sewage collecting and settling pond 22 is pumped out by a circulating water pump 20 and continuously circulated to the shrimp culture pond.
A step (E): in the culture process, according to the difference of prawn culture density and growth stage, the real-time regulation and control of water oxygenation efficiency is realized through the change of the power of the circulating water pump 20 and the regulating valve 15; in the later stage of high-density culture, the pure oxygen tank can be opened as required to assist in enhancing the oxygenation effect of the water body.
Production application example two: a shrimp biotechnology limited shrimp culture base in Yangjiang province, Guangdong, is provided with a newly-built runway type culture pond (35 meters in length, 3 meters in width and 0.95 meter in water depth), and a 1.5kw circulating water pump and 16 ejectors are configured according to the system described in the patent. When the biomass of the litopenaeus vannamei bred reaches 15 jin/cubic water, the dissolved oxygen concentration of the water can be maintained to be more than 4.5 mg/L. And residual bait and excrement generated in the culture pond can be timely driven by water flow sprayed and pushed by the ejector to enter the sewage collection sedimentation tank through the drainage pipeline and be discharged, so that the consumption of accumulated organic matters on dissolved oxygen in a water body is reduced, and the concentration of the dissolved oxygen is further indirectly improved.
As shown in FIG. 7, the present invention discloses a water circulation schematic diagram of an oxygenation system;
in order to achieve the above purpose, the third technical solution adopted by the present invention is: a using method of a jet-type water-pushing oxygenation system used for an indoor high-density shrimp culture pond,
starting a circulating water pump 20, extracting upper-layer water in a sewage collection sedimentation tank 22, pressurizing the upper-layer water by the circulating water pump 20, pumping the upper-layer water to a main water delivery pipe 18 and a branch water delivery pipe 16, and then entering a first ejector 11 and a second ejector 12;
starting the first ejector 11 and the second ejector 12 to work, and starting oxygenation of the water body;
the first jet device 11 jets the water to the center of the upper layer bulge 9 to form water flow scattering, and the water flow shrinks through the arc-shaped plate 8 to form upper layer opposite circulation;
the second ejector 12 jets the water to the central position of the lower layer bulge 10 to form water flow scattering, and the water flow shrinks through the arc-shaped plate 8 to form lower layer opposite circulation;
the upper layer of the opposite circulation and the lower layer of the opposite circulation make the water flow in the culture pond 13 flow in layers to increase the oxygen of the water body in the culture pond 13.
It should be noted that, after the system is operated, the flowing pond water drives the cultivation waste to the drainage/sewage port, the pond water carries the waste to enter the sewage collecting and settling pond 22 through the drainage/sewage pipe, the bottom deposition waste in the sewage collecting and settling pond 22 can be discharged at regular time, and the pond water on the upper layer of the sewage collecting and settling pond 22 is pumped out by the circulating water pump 20 and continuously circulated to the shrimp culture pond.
In a preferred embodiment of the present invention, the circulating water pump 20 is disposed outside the culture pond 13, the water inlet end of the circulating water pump 20 is connected to the upper portion of the sewage collecting and settling pond 22 through the water pumping pipe 21, and the water outlet end of the circulating water pump 20 is connected to the main water pipe 18.
It should be noted that the circulating water pump 20 used in the invention has adjustable power, the aerator has adjustable oxygenation strength and adjustable jet direction, and the system can be flexibly adjusted according to the actual requirements of the shrimp pond size, shape, shrimp culture density, growth stage and the like during installation and use, so that the electric power utilization efficiency is improved to the maximum extent, thereby reducing the operation energy consumption and achieving high efficiency, practicability, safety and controllability.
In a preferred embodiment of the invention, the end of the water delivery branch pipe 16 is connected with a regulating valve 15, and the regulating valve 15 can regulate the jet flow of the ejector so as to regulate the oxygen increasing amount of the water body in the culture pond 13.
It should be noted that, in the process of cultivation, the real-time regulation and control of the water oxygenation efficiency is realized through the variation of the power of the circulating water pump 20 and the regulating valve 15 according to the differences of the prawn cultivation density and the growth stage; in the later stage of high-density culture, the pure oxygen tank can be opened as required to assist in enhancing the oxygenation effect of the water body.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A jet type water pushing and oxygen increasing system for an indoor high-density shrimp culture pond is characterized by comprising a culture pond, a sewage collecting sedimentation pond connected to one side of the culture pond and a first jet device, wherein the jet device is installed in the culture pond, the sewage collecting sedimentation pond is connected to the first jet device through a water delivery main pipe, an arc-shaped plate is arranged in one side of the culture pond, at least one bulge is arranged on the inner side of the arc-shaped plate, and when the number of the bulges is multiple, the bulges are distributed in the vertical direction to form an upper-layer bulge and a lower-layer bulge;
the main water delivery pipe is connected with at least one branch water delivery pipe, the end part of the branch water delivery pipe is connected with a second ejector, the first ejector and the second ejector are positioned at different depths of the culture pond,the first jet device jets to the upper layer convex Central position of the screwThe second ejector jets to the central position of the lower layer bulge;
one end of the water delivery branch pipe is connected with a loose joint, and the jet angle of the second jet device can be adjusted through the loose joint;
the ejector includes: the suction piece and the pressure expanding piece; one end of the diffusion piece is connected with a water inlet, the other end of the diffusion piece is connected with a nozzle, the nozzle is connected with a suction piece in a matching mode, a mixing chamber is arranged inside the suction piece, the nozzle is communicated with the mixing chamber, and at least part of the nozzle is inserted into the mixing chamber;
the suction piece is of a three-way structure, one end of the suction piece is connected to the diffusion piece, the other end of the suction piece is provided with an air inlet, the third end of the suction piece is connected with a diffusion tube, and the nozzle, the mixing chamber and the diffusion tube are coaxially arranged;
the application method applied to the oxygenation system comprises the following steps:
starting a circulating water pump, extracting upper-layer water of the sewage collection sedimentation tank, pumping the upper-layer water to a main water delivery pipe and a branch water delivery pipe after the upper-layer water is pressurized by the circulating water pump, and then entering a first ejector and a second ejector;
starting the first ejector and the second ejector to work, and starting oxygenation to the water body;
the first jet device jets to the center of the upper layer bulge to form water flow scattering, and the water flow is contracted through the arc-shaped plate to form upper layer opposite circulation;
the second jet device jets flow to the center of the lower layer bulge to form water flow scattering, and the water flow shrinks through the arc-shaped plate to form lower layer opposite circulation;
the upper layer of the circulation flow and the lower layer of the circulation flow make the water flow in the culture pond flow in a layered manner, so as to carry out oxygenation on the water body in the culture pond;
the circulating water pump is arranged outside the culture pond, the water inlet end of the circulating water pump is connected to the upper part of the sewage collecting sedimentation tank through a water pumping pipe, and the water outlet end of the circulating water pump is connected to the main water conveying pipe;
the end of the water delivery branch pipe is connected with a regulating valve which can regulate the jet flow of the ejector, change the water-gas ratio and further adjust the oxygen increasing amount of the water body of the culture pond.
2. The jet type water pushing and oxygen increasing system for the indoor high-density shrimp pond as claimed in claim 1, wherein the nozzle is a conical contraction structure with a contraction angle of 15-30 degrees.
3. The jet type water pushing and oxygen increasing system for the indoor high-density shrimp pond as claimed in claim 1, wherein: the inner diameter of the nozzle is 5-10 mm.
4. The jet type water pushing and oxygen increasing system for the indoor high-density shrimp pond as claimed in claim 1, wherein: the water inlet with the air inlet inboard all is provided with the screw thread, just the water inlet with the air inlet internal diameter is 32 mm.
5. The jet type water-pushing oxygen-increasing system for the indoor high-density shrimp pond as claimed in claim 1, wherein the inner diameter of the diffusion tube is 15-20mm, and the length of the diffusion tube is 90-120 mm.
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| CN202010608633.6A CN111903596B (en) | 2020-06-29 | 2020-06-29 | Jet device and jet type water pushing and oxygen increasing system for indoor high-density shrimp pond and using method of jet device and jet type water pushing and oxygen increasing system |
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| CN202010608633.6A CN111903596B (en) | 2020-06-29 | 2020-06-29 | Jet device and jet type water pushing and oxygen increasing system for indoor high-density shrimp pond and using method of jet device and jet type water pushing and oxygen increasing system |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103132A (en) * | 1989-09-18 | 1991-04-30 | Shoji Hakoishi | Oxygen feeding apparatus of culture pond |
| CN2336573Y (en) * | 1998-03-30 | 1999-09-08 | 张鑫珩 | Submersible aeration pump |
| US6155794A (en) * | 1998-09-09 | 2000-12-05 | Fangchenggang Ocean Science And Technology Development Center | Aspirating aerator |
| CN2430017Y (en) * | 2000-06-05 | 2001-05-16 | 荣成市水产科学技术研究所 | Areator for aguatic product cultivation |
| CN102887593A (en) * | 2011-07-22 | 2013-01-23 | 吴为国 | Jet apparatus and method and facility for making water body flow and oxygenating by using multiple jet apparatuses |
| CN203313905U (en) * | 2013-05-31 | 2013-12-04 | 鹤山市鸿堡机械设备有限公司 | Fishpond aerating device |
| CN106259137B (en) * | 2016-08-09 | 2019-11-08 | 中国水产科学研究院南海水产研究所 | A kind of method that racetrack high density closes aquaculture system and aquatic |
| US20190045756A1 (en) * | 2018-10-09 | 2019-02-14 | Hongze Fishseeds Biotechnology Inc, Ltd | Dark-bright integrated greenhouse system in intensive recirculating eco-aquaculture and aquaculture method |
| CN210124223U (en) * | 2019-05-22 | 2020-03-06 | 中国水产科学研究院南海水产研究所 | Water circulation shrimp culture pond |
| CN213153536U (en) * | 2020-06-29 | 2021-05-11 | 中国水产科学研究院南海水产研究所 | Ejector and jet type water pushing and oxygen increasing system of high-density shrimp pond |
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