CN111903596B - A jet for indoor high-density shrimp breeding pond and jet-type water pushing oxygenation system and using method thereof - Google Patents

Abstract

The invention relates to a jet for indoor high-density shrimp breeding ponds, a jet-type water-pushing oxygenation system and a method for using the same, comprising: a suction part and a diffuser; one end of the diffuser is connected with a water inlet, and the The other end of the diffuser is connected with a nozzle, the nozzle is matched with a suction member, a mixing chamber is arranged inside the suction member, the nozzle is communicated with the mixing chamber, and the nozzle is at least partially inserted into the mixing chamber; the The suction member is a three-way structure, one end of the suction member is connected to the diffuser, the other end of the suction member is provided with an air inlet, the third end of the suction member is connected with a diffusion pipe, the nozzle, the mixing chamber Coaxially arranged with the diffusion tube, the ejector of the present invention is optimized and improved in structure and performance for indoor high-density shrimp ponds, improving the air-water ratio, producing more and finer bubbles, and increasing the efficiency of oxygenation. At the same time, it also has the advantages of low manufacturing cost, easy installation, no maintenance, and long service life.

Description

A jet and jet-type water-push oxygenation system for indoor high-density shrimp ponds and how to use it

technical field

The invention relates to the field of water body oxygenation or shrimp culture, in particular to a jet device for indoor high-density shrimp culture ponds, a jet-type water pushing oxygenation system and a method of using the same.

Background technique

Shrimp aquaculture has developed into a pillar industry of my country's aquaculture industry, among which Penaeus vannamei is the main aquaculture species. However, in recent years, due to the frequent occurrence of diseases and the increasingly prominent problems of environmental pollution, the traditional shrimp farming models in soil ponds and high-level ponds have been declining, and the farming area and output have been greatly reduced. At the same time, the indoor high-density shrimp farming model is gradually emerging, especially in Shandong and the coastal areas around the Bohai Sea, a large number of greenhouses and workshop cement shrimp farming ponds have been newly built and renovated.

Indoor shrimp ponds mostly use square ponds, circular ponds and annular runway ponds. The area of a single pond is not large, generally ranging from a dozen square meters to dozens of square meters; however, the density of stocked shrimp fry is very high, usually between 300 and 1000 square meters. Tail/cube body of water, much higher than earth ponds and raised ponds. Under such high-density breeding conditions, the continuous and stable supply of dissolved oxygen in pond water is the premise to ensure the survival and healthy growth of prawns. The traditional and common mechanical oxygenation methods such as waterwheel type, impeller type and jet aerator are suitable for shrimp ponds with large water bodies, and the oxygenation efficiency is limited; oxygen way. The microporous aeration and oxygenation method is generally pumped by a peripheral blower and aerated and aerated through densely distributed aeration stones or aeration pipes in the pond. Although it can generally meet the dissolved oxygen demand of high-density shrimp pond aquaculture water, It is impossible to promote the horizontal flow of the water body in the pool, and it is easy to form dirt accumulation on the bottom of the pool and deteriorate the water quality. Moreover, the aeration stone and the aeration pipe are prone to blockage or aging and cracking, which will also affect the oxygen-enhancing effect and require frequent maintenance and renewal.

On the other hand, in the process of high-density farming, a large amount of feed input in shrimp ponds will inevitably produce a large amount of aquaculture waste such as residual bait and feces. These organic wastes will not only cause eutrophication of water bodies and breed pathogenic bacteria, but also further decompose to produce Ammonia nitrogen, nitrite nitrogen and other harmful substances. Therefore, how to discharge these wastes in a timely and effective manner and control pollutants from the source is also a key problem that needs to be solved in indoor shrimp ponds. In actual production, the use of artificial siphon to absorb sewage and discharge sewage is time-consuming and labor-intensive; using a large number of water changes to discharge sewage not only wastes water resources, but may also have adverse effects on the external environment. Therefore, it is necessary to design a method that can promote the flow of water and discharge the pollutants in a centralized manner, so as to improve the collection capacity and discharge efficiency of aquaculture waste, which is very important to ensure the stability of water quality and improve the success rate of aquaculture.

The jet is a device developed based on the principle of jet negative pressure, which integrates high-efficiency oxygenation and water flow promotion. It is widely used in the field of water treatment and has also begun to be introduced into the field of aquaculture. The prior art such as Chinese utility model patent CN204490598U discloses a high-efficiency Venturi jet, which has a large product size, and the diameter of the small diameter end of the jet head is 20-30 mm, which is not suitable for small water bodies, and the jet water flow is too strong, and it is easy to be damaged. Farmed prawns cause harm. Another example is Chinese invention patent CN103102021B, which discloses a high-oxygen jet, which adopts the unique radiation structure of multiple spray guns with small diameter nozzles, which can improve the jet efficiency, but only local circulation is generated around the jet, which is not conducive to the entire breeding water body. Concentration and discharge of aquaculture waste. Another example is Chinese invention patent CN102887594B, which discloses a jet device and a plurality of jet devices to make the water flow and oxygenate the method and facility. And facilities need to be fixed in the water with buoys, etc., which brings inconvenience to operation and maintenance. Moreover, when the device and facility operates in a water body, the impact force of the water flow in the pipeline may wear or damage the water pipe network or air supply pipe. When the water pump is turned off and the operation is stopped, the aquaculture waste may block the ejector. These situations All will cause water hypoxia, directly lead to the failure of breeding.

SUMMARY OF THE INVENTION

The invention overcomes the deficiencies of the prior art, and provides a jet for indoor high-density shrimp breeding ponds, a jet-type water-pushing oxygenation system and a method for using the same.

In order to achieve the above purpose, a technical solution adopted in the present invention is: a jet device for indoor high-density shrimp breeding ponds, comprising: a suction part and a diffuser;

One end of the diffuser is connected with a water inlet, the other end of the diffuser is connected with a nozzle, the nozzle is matched with a suction member, a mixing chamber is arranged inside the suction member, and the nozzle communicates with the mixing chamber , the nozzle is at least partially inserted into the mixing chamber;

The suction piece is a three-way structure, one end of the suction piece is connected to the diffuser, 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 pipe, the nozzle, the The mixing chamber is arranged coaxially with the diffusion tube.

In a preferred embodiment of the present invention, the nozzle is a conical constriction structure, and the constriction angle is 15-30 degrees.

In a preferred embodiment of the present invention, the inner diameter of the nozzle is 5-10 mm.

In a preferred embodiment of the present invention, threads are provided on the inner sides of the water inlet and the air inlet, and the inner diameters of the water inlet and the air inlet are both 32 mm.

In a preferred embodiment of the present invention, the inner diameter of the diffusion tube is 15-20 mm, and the length of the diffusion tube is 90-120 mm.

In order to achieve the above-mentioned purpose, the second technical scheme adopted in the present invention is: a jet-type water-push aeration aeration system for indoor high-density shrimp cultivating ponds, comprising a culturing pond and a sewage collection and sedimentation pond connected to one side of the culturing pond. and a first jet, the jet is installed inside the cultivating pond, the sewage collection and sedimentation tank is connected to the first jet through the water main pipe, an arc-shaped plate is arranged inside one side of the cultivating pond, and the arc-shaped The inner side of the plate is provided with at least one protrusion, and when there are multiple protrusions, the multiple protrusions are distributed along the vertical direction to form an upper-layer protrusion and a lower-layer protrusion;

The water main pipe is connected with at least one water delivery branch pipe, the end of the water delivery branch pipe is connected with a second jet device, and the first jet device and the second jet device are located at different depths of the cultivating pond, so the The center position of the upper bulge of the first ejector, the second ejector jets to the center position of the lower bulge.

In a preferred embodiment of the present invention, one end of the water delivery branch pipe is connected with a joint, and the joint can adjust the jet angle of the second jet.

In a preferred embodiment of the present invention, there can be one or more protrusions on the upper layer, one or more protrusions on the lower layer, and the protrusions can be hemispherical, spherical or cylindrical structures or boss structures.

In order to achieve the above-mentioned purpose, the third technical scheme adopted by the present invention is: a method of using a jet type water-push oxygenation system for indoor high-density shrimp ponds,

Turn on the circulating water pump to extract the upper layer water of the sewage collection and sedimentation tank. After being pressurized by the circulating water pump, it is pumped to the water main pipe and the water branch pipe, and then enters the first ejector and the second ejector;

Start the first jet and the second jet to work, and the water body starts to aerate;

The first ejector jets to the center position of the upper bulge to form water flow scattering, and the water flows through the arc-shaped plate to shrink to form the upper layer opposite circulation;

The second ejector jets to the center of the lower bulge to form water flow scattering, and the water flows through the arc-shaped plate to shrink to form the lower opposite circulation;

The upper-layer counter-circulation and the lower-layer counter-circulation make the water flow in the culture pond layer-by-layer, and the water body in the culture pond is aerated.

In a preferred embodiment of the present invention, the circulating water pump is arranged outside the culture tank, the water inlet end of the circulating water pump is connected to the upper part of the sewage collection and sedimentation tank through a suction pipe, and the water outlet end of the circulating water pump is connected to the water main pipe.

In a preferred embodiment of the present invention, the end of the water delivery branch pipe is connected with a regulating valve, and the regulating valve can adjust the jet flow of the jet, thereby regulating the oxygen increase of the water body of the breeding pond.

The present invention solves the defects existing in the background technology, and the present invention has the following beneficial effects:

(1) The jet of the present invention is optimized and improved in structure and performance for indoor high-density shrimp ponds, improves the air-water ratio, produces many and delicate bubbles, and has high oxygen-enhancing efficiency; it also has manufacturing costs. Low cost, easy installation, no maintenance, long service life and so on.

(2) The jet-type water-push oxygenation system of the present invention is equipped with a plurality of jets by one motive force (circulating water pump), which can realize various functions of oxygenation, flow generation, sewage collection and water circulation. The high dissolved oxygen pond water circulates in the shrimp pond, on the one hand, it keeps the water quality in the pond stable and balanced, and eliminates the dead angle of hypoxia; The sedimentation tank is conducive to the timely concentration and effective discharge of aquaculture waste. At the same time, a certain degree of water flow in the shrimp pond is also in line with the biological habits of the shrimp, which is conducive to the healthy growth of the shrimp and enhances the breeding effect. In addition, the recycling of water in shrimp ponds effectively saves water resources and reduces adverse effects on the environment.

(3) The power of the circulating water pump used in the present invention is adjustable, the oxygenation strength of the jet device and the direction of the jet flow are adjustable, and the system can be installed and used flexibly according to the actual needs such as the size and shape of the shrimp breeding pond, and the shrimp breeding density and growth stage. Adjustment to maximize the efficiency of power use, thereby reducing operating energy consumption, making it efficient, practical, safe and controllable.

(4) Through the jet to the convex structure, the water flow hits the convex to form a certain water flow scattering, that is, the water flows to the outer edge of the convex, the flow hits the inner wall of the arc-shaped plate, and the water flow shrinks through the arc-shaped plate, so that the water flow along the arc The inner walls on both sides of the shaped plate flow to form a countercurrent circulation. When the water flows to the other side of the aquaculture pond, the two water flows form an impact, which makes the water flow vibrate and can improve the oxygenation strength of the water flow.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the partial three-dimensional structure schematic diagram of the preferred embodiment of the present invention;

Figure 2 is a cross-sectional view of a fluidizer of a preferred embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a diffuser according to a preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a partial structure of an oxygenation system according to a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of the structure of the ejector and the position of the protrusion according to the preferred embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an oxygenation system according to another embodiment of the present invention.

FIG. 7 is a schematic diagram of the water circulation of the oxygenation system according to the preferred embodiment of the present invention.

Reference number:

1. Diffuser, 2, Suction, 3, Air inlet, 4, Gasket, 5, Diffusion pipe, 6, Nozzle, 7, Mixing chamber, 8, Arc plate, 9, Upper protrusion, 10, Lower bulge, 11, first jet, 12, second jet, 13, breeding pond, 14, water pressure gauge, 15, regulating valve, 16, water branch pipe, 17, drain outlet, 18, water main pipe , 19, drain pipe, 20, circulating water pump, 21, pumping pipe, 22, sewage settling tank.

Detailed ways

The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

In the description of this application, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientations or positional relationships indicated by vertical, horizontal, top, bottom, inner, and outer are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and The description is simplified rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

As shown in Figure 1, the present invention discloses a schematic partial three-dimensional structure of a jet used in an indoor high-density shrimp pond;

A jet for indoor high-density shrimp farming ponds, comprising: a suction part 2 and a diffuser 1;

One end of the diffuser 1 is connected with a water inlet, the other end of the diffuser 1 is connected with a nozzle 6, the nozzle 6 is matched with a suction member 2, and a mixing chamber 7 is arranged inside the suction member 2, the nozzle 6 communicates with the mixing chamber 7, and the nozzle 6 at least partially inserted into the mixing chamber 7;

The suction part 2 is a three-way structure. One end of the suction part 2 is connected to the diffuser part 1; the other end of the suction part 2 is provided with an air inlet 3; In communication with the suction part 2 , the gasket 4 can play a sealing role, and the nozzle 6 , the mixing chamber 7 and the diffusion pipe 5 are arranged coaxially.

It should be noted that the ejector of the present invention is optimized and improved in structure and performance for indoor high-density shrimp ponds, improves the air-water ratio, produces many and delicate bubbles, and has high oxygen-enhancing efficiency; It has the advantages of low manufacturing cost, simple installation, no maintenance, and long service life.

The ejector is made of high-strength corrosion-resistant engineering plastic materials (such as POM, PVDF), and the mold is opened for mass production. Specifically, the ejector is made of polyoxymethylene (POM) material, but it is not limited to this material. Those skilled in the art can During actual use, the material of the ejector is routinely replaced.

As shown in FIG. 2 , the present invention discloses a cross-sectional view of the ejector; as shown in FIG. 3 , the present invention discloses a schematic structural diagram of the diffuser 1 ;

In a preferred embodiment of the present invention, the nozzle 6 is a conical constriction structure, and the constriction angle is 15-30 degrees.

In a preferred embodiment of the present invention, the inner diameter of the nozzle 6 is 5-10 mm.

In a preferred embodiment of the present invention, threads are provided on the inner sides of the water inlet and the air inlet 3, 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 diffusion tube 5 is 15-20 mm, and the length of the diffusion tube 5 is 90-120 mm.

Preferably, the inner diameter of the diffusion tube 5 is 15 mm or 20 mm, and preferably, the length of the diffusion tube 5 is 90 mm, 100 mm or 120 mm.

As shown in Figure 4, the present invention discloses a schematic diagram of the partial structure of the oxygenation system;

In order to achieve the above-mentioned purpose, the second technical scheme adopted by the present invention is: a jet-type water-push water oxygenation system for indoor high-density shrimp cultivating ponds, comprising a culturing pond 13 and a sewage collector connected to one side of the culturing pond 13. The sedimentation tank 22 and the first ejector 11, the ejector is installed in the culture tank 13, the sewage collection sedimentation tank 22 is connected to the first ejector 11 through the water delivery main pipe 18, and the inner side of the culture tank 13 is provided with an arc-shaped plate 8, The inner side of the arc-shaped plate 8 is provided with at least one protrusion, and when there are multiple protrusions, the multiple protrusions are distributed along the vertical direction to form an upper protrusion 9 and a lower protrusion 10;

The water main pipe 18 is connected with at least one water branch pipe 16, the end of the water branch pipe 16 is connected with a second jet 12, the first jet 11 and the second jet 12 are located at different depths of the culture pond 13, and the first jet 11 The center position of the upper protrusion 9, the second jet 12 jets to the center position of the lower protrusion 10.

It should be noted that the jet-type water-push oxygenation system of the present invention consists of a motive force, namely, a circulating water pump 20. The circulating water pump 20 selects a low-lift, large-flow centrifugal pump and a variable frequency pump with a rated power of 1.5 or 2.2 kw. Equipped with multiple jets, the functions of aeration, flow generation, sewage collection and water circulation can be realized. The high dissolved oxygen pond water circulates in the shrimp pond, on the one hand, it keeps the water quality in the pond stable and balanced, and eliminates the dead angle of hypoxia; The sedimentation tank 22 is conducive to the timely concentration and effective discharge of aquaculture waste. At the same time, a certain degree of water flow in the shrimp pond is also in line with the biological habits of the shrimp, which is conducive to the healthy growth of the shrimp and enhances the breeding effect. In addition, the recycling of water in shrimp ponds effectively saves water resources and reduces adverse effects on the environment.

As shown in FIG. 5 , the present invention discloses a schematic diagram of the structure of the ejector and the position of the protrusion;

Specifically, through the jet to the convex structure, the water flow hits the convex to form a certain water flow scattering, that is, the water flows to the outer edge of the convex, the flow hits the inner wall of the arc-shaped plate 8, and the water flow shrinks through the arc-shaped plate 8 to make the water flow Flow along the inner walls of both sides of the arc-shaped plate 8 to form a counter-current circulation. When the water flow flows to the other side of the culture pond 13, the two water flows form an impact, which makes the water flow move and vibrate, which can improve the oxygenation strength of the water flow.

In a preferred embodiment of the present invention, one end of the water delivery branch pipe 16 is connected with a live joint, and the live joint can adjust the jet angle of the second jet 12 .

It should be noted that, at intervals of 4 to 6 meters on the water delivery main pipe 18, the pipe diameter of the water delivery main pipe 18 is 40-75 mm. At least one water delivery branch pipe 16 is tapped from the top 18, the diameter of which is 32 mm, and an ejector is installed under each water delivery branch pipe 16.

Wherein, the second jet 12 is installed horizontally at the bottom of the pool, the water inlet is communicated with the water delivery branch pipe 16 through the outer wire and the elbow, the air inlet 3 is communicated with the air inlet pipe through the outer wire, and the air inlet pipe extends above the water surface, as an option , the intake pipe can also be connected with the pure oxygen pipe through the bypass, and the pure oxygen pipe is connected with the pure oxygen tank.

Among them, the articulation connected to the upper end of the water delivery branch pipe 16 can be freely rotated to adjust the jet flow direction of the jet; the regulating valve 15 can control the water flow of the water delivery branch pipe 16 to flexibly adjust the jet intensity of the jet.

Among them, the water pressure gauge 14 provided at the end of the water main pipe 18 is used to indicate the water pressure in the water pipe network; the regulating valve 15 provided on the water main pipe 18 is used to adjust the water pressure in the water pipe network.

For indoor high-density shrimp ponds, an installation method of a jet-type water-push oxygenation system is provided, including the following steps:

Step (1): According to the size and shape of the shrimp pond, select the 20 model of the circulating water pump, the size and quantity of the jet, and the corresponding pipes, accessories, etc.; determine the configuration and layout of the jet-type water-push oxygenation system;

Step (2): The circulating water pump 20 is fixedly installed in a suitable position outside the shrimp pond, the water inlet end of the water pump 21 is extended to the upper part of the sewage collection and sedimentation tank 22 outside the shrimp pond, the water outlet end of the water pump 21 and the water inlet of the circulating water pump 20 are extended. connected;

Step (3): Two or more water delivery main pipes 18 are tapped from the water outlet of the circulating water pump 20, and the water delivery main pipes 18 are fixed along the upper edges of the pond walls on both sides of the shrimp pond, and branch out at a distance of 4 to 6 meters It is connected to the water delivery branch pipe 16 through the reducing tee, the regulating valve 15 and the live connection in turn, and a water pressure gauge 14 is installed at the end of the water delivery main pipe 18;

Step (4): Extend the water delivery branch pipe 16 to the bottom of the pool vertically, and connect it with the elbow, the outer wire and the jet, and the jet is installed horizontally at the bottom of the pool.

In a preferred embodiment of the present invention, the upper protrusions 9 can be one or more, the lower protrusions 10 can be one or more, and the protrusions can be hemispherical, spherical or cylindrical structures or boss structures.

Production and application example 1: a shrimp farm in Shanwei City, Guangdong Province, using the original square rounded abalone pond (side length 6 meters, water depth 0.8 meters), aeration and oxygenation methods have successively adopted aeration stone and microporous aeration. Although it is possible to increase the aeration amount by increasing the power of the peripheral blower to meet the needs of shrimp farming, there are always residual bait and feces around the aeration stone or the aeration pipe, which spoils the water quality and affects the healthy growth of shrimp. Finally, a 1.1kw circulating water pump and 8 jets are configured according to the system described in the patent. When the biomass of cultured Penaeus vannamei reaches 17 catties/cubic water body, the dissolved oxygen concentration of the water body can be maintained above 4.8 mg/L; when the biomass of cultured Penaeus monodon reaches 11 catties/cubic water body, the dissolved oxygen concentration of the water body can be Maintain above 5.5mg/L.

As shown in Figure 6, the present invention discloses another schematic structural diagram of the oxygenation system;

It should be noted that the culture pond 13 is an annular structure, including a water pumping pipe 21, a circulating water pump 20, a water delivery main pipe 18, a plurality of water delivery branch pipes 16, a plurality of jets, a water pressure gauge 14, and a regulating valve 15. The water inlet end of the suction pipe 21 is located at the upper part of the sewage collection and sedimentation tank 22 outside the shrimp pond, and the water outlet end is connected with the water inlet of the circulating water pump 20, and the water outlet of the circulating water pump 20 is connected with the two water delivery main pipes 184, and the water pressure gauge 14 is installed therein. At the end of a water delivery main pipe 18, the water delivery branch pipes 16 are arranged at intervals along the water delivery main pipe 184. The cultivating pond 13 is provided with a drainage port 17 at the bottom, and the drainage port 17 is connected to the circulating water pump 20 through a drain pipe 19. It should be noted that the culturing pond is not limited to a square structure or a ring structure, and those skilled in the art can use the culturing pond according to actual use. Pools adjusted to circular structures or other shapes.

Among them, the circulating water pump 20 is placed on the ground outside the shrimp pond, and a low-lift, large-flow centrifugal pump is selected, and a variable frequency pump with a rated power of 1.5 or 2.2 kw is used.

Among them, the three water conveying main pipes 18 are respectively fixed along the upper edges of the two sides of the shrimp pond and the middle partition wall, and their pipe diameters are 63mm or 75mm.

The water delivery main pipe 18 is connected to a water delivery branch pipe 16 at intervals of 6 meters, the diameter of which is 32 mm, and an ejector is installed under each water delivery branch pipe 16 .

The jet is installed horizontally at the bottom of the pool, the water inlet is communicated with the water delivery branch pipe 16 through the outer wire and the elbow, the air inlet 3 is communicated with the air inlet pipe through the outer wire, and the air inlet pipe extends above the water surface. At the same time, the intake pipe can be connected with the pure oxygen pipe through the bypass, and the pure oxygen pipe is connected with the pure oxygen tank.

The articulation connected to the upper end of the water delivery branch pipe 16 can be freely rotated to adjust the jet direction of the jet 1; the regulating valve 15 can control the water flow of the water delivery branch pipe 16 to flexibly adjust the jet intensity of the jet.

The water pressure gauge 14 provided at the end of the water main pipe 18 is used to indicate the water pressure in the water pipe network; the regulating valve 15 provided on the water main pipe 18 is used to adjust the water pressure in the water pipe network.

Further, an installation method of a jet type water-push oxygenation system is provided, comprising the following steps:

Step (1): according to the size of the culturing pond 13, select the model of the circulating water pump 20, the number of jets and the corresponding pipelines, accessories, etc.; determine the configuration and layout of the jet-type water-push oxygenation system;

Step (2): The circulating water pump 20 is fixedly installed in a suitable position outside the shrimp pond, the water inlet end of the water pump 21 is extended to the upper part of the sewage collection and sedimentation tank 22 outside the shrimp pond, the water outlet end of the water pump 21 and the water inlet of the circulating water pump 20 are extended. connected;

Step (3): tap the three water delivery main pipes 18 from the water outlet of the circulating water pump 20, the two water delivery main pipes 18 are fixed along the upper edges of the pool walls on both sides of the shrimp pond, and the other water delivery main pipe 18 follows the shrimp pond. The upper edge of the intermediate water partition wall is fixed, and branches are divided at equal intervals of 6 meters, and are connected to the water delivery branch pipe 16 through the reducing tee, the regulating valve 15, and the live connection in turn, and a water pressure gauge is installed at the end of the water delivery main pipe 18. 14;

Step (4): Extend the water delivery branch pipe 16 to the bottom of the pool vertically, and connect it with the elbow, the outer wire and the jet, and the jet is installed horizontally at the bottom of the pool.

Still further, the using method of the jet type pushing water oxygenation system, comprises the steps:

Step (A): turn on the circulating water pump 20, extract the upper layer water of the sewage collection and sedimentation tank 22, pump out after the pressurization of the circulating water pump 20, and then enter the ejector through the water main pipe 18 and the water transfer branch pipe 16;

Step (B): open the regulating valve 15 on the water delivery branch pipe 16, start the jet to work, the water body starts to increase oxygen, and adjust the regulating valve 15 to control the aeration intensity;

Step (C): Rotate the live connection on the water delivery branch pipe 16 to adjust the jet flow direction of the jet, so that the water body produces a directional flow along the runway;

Step (D): After the system is in operation, the flowing pool water drives the aquaculture waste to the drainage/sewage outlet, and the pool water carries the waste into the sewage collection and sedimentation tank 22 through the drainage/sewage pipe, and the sedimentation of the waste at the bottom of the sewage collection and sedimentation tank 22 can be timed. After discharge, the water in the upper layer of the sewage collection and sedimentation tank 22 is pumped out by the circulating water pump 20 and continues to be circulated to the shrimp breeding pond.

Step (E): in the culturing process, according to the difference of the prawn culturing density and the growth stage, through the change of the power of the circulating water pump 20 and the regulating valve 15, the real-time regulation of the water body oxygenation efficiency is realized; It is necessary to open the pure oxygen tank to help strengthen the oxygenation effect of the water body.

Production and application example 2: The shrimp breeding base of Yangjiang Xiami Biotechnology Co., Ltd., Guangdong Province, built a new runway-type breeding pond (length 35 meters, width 3 meters, water depth 0.95 meters), and configured a 1.5kw circulation according to the system described in the patent. Water pump and 16 jets. When the biomass of cultured Litopenaeus vannamei reaches 15 catties/cubic water body, the dissolved oxygen concentration in the water body can also be maintained above 4.5 mg/L. In addition, the residual bait and feces produced in the breeding pond can be discharged in time through the drainage pipeline into the sewage collection and sedimentation tank driven by the water flow driven by the jet, thereby reducing the consumption of dissolved oxygen in the water by the accumulated organic matter, and further indirectly improving the efficiency of the water. dissolved oxygen concentration.

As shown in Figure 7, the present invention discloses a schematic diagram of the water circulation of the oxygenation system;

In order to achieve the above-mentioned purpose, the third technical scheme adopted by the present invention is: a method of using a jet type water-push oxygenation system for indoor high-density shrimp ponds,

Turn on the circulating water pump 20, extract the upper layer water of the sewage collection and sedimentation tank 22, pressurized by the circulating water pump 20, and pump it to the water delivery main pipe 18 and the water delivery branch pipe 16, and then enter the first ejector 11 and the second ejector 12;

Start the first jet 11 and the second jet 12 to work, and the water body starts to aerate;

The first jet 11 jets to the center of the upper bulge 9 to form water flow scattering, and the water flows through the arc-shaped plate 8 to shrink to form an upper-layer opposite circulation;

The second jet 12 jets to the center of the lower protrusion 10 to form water flow scattering, and the water flows through the arc-shaped plate 8 to shrink to form a lower opposite circulation;

The upper-layer counter-circulation and the lower-layer counter-circulation make the water flow in the culture pond 13 flow in layers, and the water body in the culture pond 13 is aerated.

It should be noted that after the system is running, the flowing pool water drives the aquaculture waste to the drainage/sewage outlet, and the pool water carries the waste into the sewage collection and sedimentation tank 22 through the drainage/sewage pipe, and the waste deposited at the bottom of the sewage collection and sedimentation tank 22 can be timed After discharge, the water in the upper layer of the sewage collection and sedimentation tank 22 is pumped out by the circulating water pump 20 and continues to be circulated to the shrimp breeding pond.

In a preferred embodiment of the present invention, the circulating water pump 20 is arranged on the outside of the culture tank 13, the water inlet end of the circulating water pump 20 is connected to the upper part of the sewage collection and sedimentation tank 22 through the suction pipe 21, and the water outlet end of the circulating water pump 20 is connected to the water main pipe 18 .

It should be noted that the power of the circulating water pump 20 used in the present invention is adjustable, the oxygenation intensity of the jet device and the direction of the jet flow are adjustable, and the system can be installed and used according to the actual needs such as the size and shape of the shrimp pond and the shrimp breeding density and growth stage. Flexible adjustment to maximize the efficiency of power use, thereby reducing operating energy consumption, making it efficient, practical, safe and controllable.

In a preferred embodiment of the present invention, a regulating valve 15 is connected to the end of the water delivery branch pipe 16 , and the regulating valve 15 can adjust the jet flow rate of the ejector, thereby adjusting the oxygenation amount of the water body of the culture pond 13 .

It should be noted that, in the breeding process, according to the different shrimp breeding density and growth stage, the real-time control of the oxygenation efficiency of the water body is realized through the change of the power of the circulating water pump 20 and the adjustment valve 15; It is necessary to open the pure oxygen tank to help strengthen the oxygenation effect of the water body.

The ideal embodiments of the present invention are inspired by the above, and relevant persons can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope 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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