Oxygenation equipment

Abstract

The utility model discloses oxygenation equipment which comprises an oxygen dissolving cone, the size of the top of the oxygen dissolving cone is smaller than that of the bottom of the oxygen dissolving cone, a water inlet and a water outlet are formed in the top and the bottom of the oxygen dissolving cone respectively, the water inlet is connected with a first water-oxygen mixer, and the water outlet is connected with a second water-oxygen mixer towards the interior of the oxygen dissolving cone. The second water-oxygen mixer and the inner bottom face of the oxygen dissolving cone are arranged at intervals and jointly form a backflow space, a plurality of flow guide holes are formed in the bottom of the second water-oxygen mixer, and the second water-oxygen mixer is communicated with an inner cavity of the oxygen dissolving cone through the flow guide holes; the water supply pipe is connected to the first water-oxygen mixer; the oxygen supply device is provided with an oxygen supply pipe, and the oxygen supply pipe is connected to the water supply pipe or the first water-oxygen mixer. Compared with the prior art, the oxygen dissolving efficiency and the oxygen utilization rate can be improved, and stable water with certain oxygen content can be output outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture, in particular to oxygenation equipment. Background Art

[0002] In factory aquaculture, oxygenation technology for aquaculture water is one of the key technologies. The level of dissolved oxygen in water directly affects the aquaculture density and the growth rate of fish. When the dissolved oxygen in water is insufficient, it will cause anaerobic decomposition of organic matter, ammonia nitrogen and other fish excrement in the water, produce toxic substances, and cause a large number of farmed fish to be infected and die. At present, the main method is to supplement the dissolved oxygen value by adding water with high dissolved oxygen content in the aquaculture area through mechanical equipment or by making the water fully contact with the air.

[0003] In factory aquaculture, since the breeding density is much higher than the traditional breeding method, the traditional aeration equipment can no longer meet the oxygen demand of aquatic products, and the existing dissolved oxygen equipment has the defect of low dissolved oxygen efficiency. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] The utility model aims to provide an oxygenation device which can efficiently increase the dissolved oxygen content of water.

[0005] According to the first aspect of the present invention, the oxygen enrichment device comprises:

[0006] The size of the top of the dissolved oxygen cone is smaller than that of the bottom. The top and bottom of the dissolved oxygen cone are respectively provided with a water inlet and a water outlet. The water inlet is connected to a first water-oxygen mixer. The water outlet is connected to a second water-oxygen mixer toward the inside of the dissolved oxygen cone. The second water-oxygen mixer is spaced apart from the inner bottom surface of the dissolved oxygen cone and together form a reflux space. The bottom of the second water-oxygen mixer is provided with a plurality of guide holes. The second water-oxygen mixer is connected to the inner cavity of the dissolved oxygen cone through the guide holes.

[0007] a water supply pipe connected to the first water-oxygen mixer;

[0008] The oxygen supply device is provided with an oxygen supply pipe, and the oxygen supply pipe is connected to the water supply pipe or the first water-oxygen mixer.

[0009] The oxygen-increasing device according to the embodiment of the utility model has at least the following beneficial effects:

[0010] 1. Since the water inlet and outlet of the oxygen dissolving cone are both connected to a water-oxygen mixer, the water flow can be effectively stirred, so that the bubbles can be more evenly distributed in the water, promoting the mixing of oxygen and water, thereby improving the oxygen dissolving efficiency;

[0011] 2. The undissolved oxygen in the oxygen-dissolving cone divides the interior of the oxygen-dissolving cone into an oxygen chamber and a water chamber. Oxygen gathers in the oxygen chamber to form a high-pressure environment. The setting of the oxygen-dissolving cone can reduce the retention of oxygen in the oxygen chamber while maintaining high pressure, so as to improve the utilization rate of oxygen.

[0012] 3. There are a large number of bubbles in the water near the top of the dissolved oxygen cone, which are oxygen that has not dissolved in the water or oxygen that has been precipitated due to oversaturation. The closer to the bottom of the dissolved oxygen cone, the fewer bubbles there are in the water. The dissolved oxygen here is relatively stable. The water flow in the dissolved oxygen cone passes through the reflux space from the bottom and meanders upward to enter the second water-oxygen mixer. Since the solubility of oxygen in water is related to the water depth, the utility model can output stable water with a certain oxygen content.

[0013] According to some embodiments of the present invention, in order to achieve agitation of the water flow, the first water-oxygen mixer and the second water-oxygen mixer each include a mixing channel and a plurality of turbulence blades, and the plurality of turbulence blades are rotatably connected in the mixing channel.

[0014] According to some embodiments of the utility model, each of the turbulent blades has at least two blades that are offset from each other. Through the above arrangement, when the water flow contacts different blades, the turbulent blades can divide the water flow into multiple small vortices to promote water-oxygen mixing.

[0015] According to some embodiments of the utility model, in order to save space, the water inlet is connected to the inside of the dissolved oxygen cone with the first water-oxygen mixer.

[0016] According to some embodiments of the utility model, one end of the water supply pipe is connected to a water pump, and one end of the water pump is connected to a filtration system. The aquaculture water is filtered by the filtration system and then pumped into the dissolved oxygen cone by the water pump to achieve circulating water aquaculture.

[0017] According to some embodiments of the utility model, the oxygenation equipment further comprises a controller, the controller is communicatively connected to a dissolved oxygen sensor, and the controller controls the oxygen supply device and / or the water pump through feedback from the dissolved oxygen sensor. The dissolved oxygen sensor is placed in the aquaculture water body, and when the oxygen content of the aquaculture water body changes, the oxygenation equipment maintains the oxygen content of the aquaculture water body within a certain range through automatic adjustment of the controller.

[0018] According to some embodiments of the present invention, the oxygen supply device includes an oxygen concentrator, and the oxygen supply pipe is installed with a check valve to avoid damaging the oxygen concentrator.

[0019] According to some embodiments of the utility model, since the oxygen-dissolving cone is a closed structure, a liquid level meter is installed on the oxygen-dissolving cone to facilitate observation of the water level in the oxygen-dissolving cone.

[0020] According to some embodiments of the utility model, the bottom surface of the oxygen-dissolving cone is connected to a drain pipe, and the drain pipe is provided with a switch valve. When the oxygen-dissolving cone needs to be cleaned, the switch valve is opened to drain the contents of the oxygen-dissolving cone.

[0021] According to some embodiments of the utility model, the oxygen enrichment equipment also includes a mounting frame, and the dissolved oxygen cone and the oxygen supply device are both mounted on the mounting frame. The mounting frame is positioned higher than the liquid level of the aquaculture water body to prevent the aquaculture water body from flowing back from the second water-oxygen mixer into the dissolved oxygen cone.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the oxygenation equipment of an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A top view of the oxygenation device shown;

[0026] Figure 3 yes Figure 2 A cross-sectional view of the oxygen enrichment device shown along the AA section line;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the turbulent fan blade of an embodiment of the utility model.

[0028] In the attached drawings: 100-dissolved oxygen cone, 200-oxygen supply device, 300-water pump, 310-water supply pipe, 210-oxygen supply pipe, 220-check valve, 230-spherical gate valve, 240-pressure gauge, 400-first water-oxygen mixer, 500-second water-oxygen mixer, 101-reflux space, 510-guide hole, 410-mixing channel, 420-installation shaft, 430-turbulent fan blade, 431-blade, 600-liquid level meter, 610-glass tube, 620-connecting pipe head, 110-drain pipe, 111-switch valve. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] like Figures 1 to 3 As shown, the oxygen enrichment equipment according to the first embodiment of the utility model includes a dissolved oxygen cone 100, a water supply device and an oxygen supply device 200, the water supply device includes a filtration system (not shown in the drawings), a water pump 300 and a water supply pipe 310, the filtration system, the water pump 300, the water supply pipe 310 and the dissolved oxygen cone 100 are connected in sequence to provide the dissolved oxygen cone 100 with clean circulating water with a certain water pressure.

[0034] The working principle of the filtration system is to remove pollutants in the water through physical and / or chemical and / or biological methods to keep the water clean and the environment conducive to the survival of fish. Specifically, physical filtration refers to the filtration system filtering solid particles, leftover bait and other impurities in the water through physical filters or sponges and other materials. The filter material will intercept most of the impurities, making the water clearer. Chemical filtration refers to the filtration system equipped with chemical filter media, such as activated carbon, ion exchange resin, etc. These media can absorb organic waste, odor substances and chemical pollutants in the water, thereby improving the water quality. Biological filtration refers to the filtration system equipped with biological filter materials, such as biological clay, biological balls, etc., on the surface of which a large number of beneficial bacteria will grow. These bacteria can decompose harmful substances such as ammonia and nitrite in the water and convert them into relatively harmless inorganic salts, thereby maintaining a stable level of ammonia nitrogen and nitrite in the water. The filtration system pumps the aquaculture water into the interior of the filter through the water pump 300, and after physical filtration and / or chemical filtration and / or biological filtration, the water is transported to the dissolved oxygen cone 100 through the water supply pipe 310 by the water pump 300. After the water in the dissolved oxygen cone 100 is mixed with the oxygen provided by the oxygen supply device 200, the oxygen-rich water flows back to the aquaculture water from the outlet of the dissolved oxygen cone 100 to form a water cycle, maintain the flow and ventilation of the water, and facilitate the dissolution of oxygen and the discharge of harmful gases.

[0035] Optionally, the oxygen supply device 200 can be an oxygen concentrator, which uses the adsorption performance of molecular sieves, and through physical principles, uses a large-displacement oil-free compressor as a power to separate nitrogen from oxygen in the air, and finally obtains high-concentration oxygen. In this embodiment, the oxygen port of the oxygen concentrator is connected to an oxygen supply pipe 210. The oxygen supply pipe 210 is connected to the water supply pipe 310 or the dissolved oxygen cone 100. In this embodiment, the oxygen supply pipe 210 is connected to the water supply pipe 310, and the water supply pipe 310 is connected to the dissolved oxygen cone 100. Regardless of the connection method used by the oxygen supply pipe 210, it is eventually mixed with the circulating water.

[0036] It should be noted that in order to prevent the circulating water from flowing back to the oxygen concentrator through the oxygen supply pipe 210, the oxygen supply pipe 210 is also equipped with a check valve 220 to ensure the normal use of the oxygen concentrator. The oxygen supply pipe 210 is equipped with a ball gate valve 230 and a pressure gauge 240 downstream of the check valve 220. The ball gate valve 230 is used to realize the on-off of the oxygen supply pipe 210, and the pressure gauge 240 is used to detect the pressure in the dissolved oxygen cone 100.

[0037] It is understandable that the oxygen supply device 200 can also be an oxygen cylinder. Compared with an oxygen generator, the cost of using an oxygen cylinder is lower, but the cylinder needs to be replaced frequently and a corresponding electric control valve is required to adjust the oxygen supply.

[0038] like Figure 3 and Figure 4As shown, the dissolved oxygen cone 100 is a conical structure, the size of its top is smaller than the size of its bottom, and the top and bottom of the dissolved oxygen cone 100 are respectively provided with a water inlet and a water outlet, the water inlet is connected to the inside of the dissolved oxygen cone 100 with a first water-oxygen mixer 400, the first water-oxygen mixer 400 is connected to the water supply pipe 310, and the water outlet is connected to the inside of the dissolved oxygen cone 100 with a second water-oxygen mixer 500. The center line of the first water-oxygen mixer 400 coincides with the center axis of the dissolved oxygen cone 100, the center line of the second water-oxygen mixer 500 is orthogonal to the center axis of the dissolved oxygen cone 100, and the second water-oxygen mixer 500 is spaced apart from the inner bottom surface of the dissolved oxygen cone 100 and forms a reflux space 101 together, and the bottom of the second water-oxygen mixer 500 is provided with a plurality of guide holes 510, and the second water-oxygen mixer 500 is connected to the inner cavity of the dissolved oxygen cone 100 through the guide holes 510.

[0039] Specifically, the first water-oxygen mixer 400 and the second water-oxygen mixer 500 each include a mixing channel 410, a mounting shaft 420, and a plurality of turbulent blades 430. The mounting shaft 420 is fixedly connected in the mixing channel 410, and the plurality of turbulent blades 430 are connected to the mounting shaft 420 through respective bearings to achieve free rotation of all turbulent blades 430. Each turbulent blade 430 has at least two blades 431 that are staggered with each other, so that when the water flow contacts different blades 431, the turbulent blade 430 can divide the water flow into a plurality of small vortices to achieve agitation of the water flow, thereby promoting water-oxygen mixing.

[0040] When the water-oxygen mixture enters the first water-oxygen mixer 400 from the water supply pipe 310, the water-oxygen mixture is stirred by the first water-oxygen mixer 400, so that the bubbles can be more evenly dispersed in the water, promoting the mixing of oxygen and water, thereby improving the oxygen dissolution efficiency.

[0041] After being stirred by the first water-oxygen mixer 400, the water-oxygen mixture enters the interior of the dissolved oxygen cone 100. The undissolved oxygen in the dissolved oxygen cone 100 divides the interior of the dissolved oxygen cone 100 into an oxygen chamber and a water chamber from top to bottom. The oxygen gathers in the oxygen chamber to form a high-pressure environment, which can increase the oxygen content in the water. Since the undissolved oxygen can only be dissolved near the liquid surface, when the water flow rate is fixed, the closer the water flow is to the bottom of the dissolved oxygen cone 100, the slower its flow rate. When the rising speed of the oxygen bubbles in the water is the same as the downward speed of the water flow, the bubbles will be suspended in the water flow of the dissolved oxygen cone 100 and finally dissolved in the water. Since the dissolved oxygen cone 100 is a structure that is narrow at the top and wide at the bottom, it can reduce the retention of oxygen in the oxygen chamber while maintaining high pressure to improve the utilization rate of oxygen.

[0042] According to the above structure, the closer to the bottom of the dissolved oxygen cone 100, the fewer bubbles there are in the water body, and the oxygen dissolution here is relatively stable. The water flow in the dissolved oxygen cone 100 goes from the bottom through the reflux space 101 and detours upward to enter the second water-oxygen mixer 500. After being stirred by the second water-oxygen mixer 500, the water-oxygen mixture flows out from the water outlet and flows back into the aquaculture water body to replenish the dissolved oxygen in the aquaculture water body. Since the solubility of oxygen in water is related to the water depth, the second water-oxygen mixer 500 is spaced apart from the inner bottom surface of the dissolved oxygen cone 100, which is conducive to outputting stable water with a certain oxygen content to meet the dissolved oxygen requirements of aquaculture.

[0043] like Figure 1 As shown, in some embodiments of the present invention, since the dissolved oxygen cone 100 is a closed structure, in order to facilitate the observation of the water level in the dissolved oxygen cone 100, the dissolved oxygen cone 100 is installed with a liquid level meter 600. There are many types of liquid level meters 600, such as magnetic float liquid level gauges, capacitive liquid level gauges, static pressure liquid level gauges, radar liquid level gauges, ultrasonic liquid level gauges, magnetic flap liquid level gauges, buoyancy liquid level gauges or connected liquid level gauges. Since the connected liquid level gauge has the lowest cost and does not need to consume any energy, in this embodiment, the liquid level meter 600 is preferably a connected liquid level gauge. The connected liquid level gauge includes a glass tube 610 and two connecting pipe heads 620, the glass tube 610 is connected between the two connecting pipe heads 620, the two connecting pipe heads 620 are respectively connected to the upper and lower positions of the dissolved oxygen cone 100, and the glass tube 610 is connected to the inner cavity of the dissolved oxygen cone 100 through the connecting pipe head 620. When the water level in the oxygen-dissolving cone 100 is higher than the lowermost connecting pipe head 620 , the circulating water in the oxygen-dissolving cone 100 will enter the glass tube 610 , so that the user can observe the water level in the oxygen-dissolving cone 100 from the outside.

[0044] In some embodiments of the present invention, in order to facilitate the cleaning of the dissolved oxygen cone 100, the bottom surface of the dissolved oxygen cone 100 is connected to a drain pipe 110, and the drain pipe 110 is provided with a switch valve 111. When the dissolved oxygen cone 100 needs to be cleaned, the switch valve 111 is opened, and the contents of the dissolved oxygen cone 100 are discharged from the drain pipe 110. Since the interior of the dissolved oxygen cone 100 is divided into an oxygen chamber and a water chamber, and the oxygen chamber is a high-pressure environment, when the switch valve 111 is opened, the high-pressure environment of the oxygen chamber can promote the discharge of the contents of the dissolved oxygen cone 100, so as to drive the flow of solid sediments. It should be noted that the reason why the utility model is provided with a reflux space 101 is that in addition to being able to stabilize the dissolved oxygen in the water body, it can also precipitate the solid sediments in the water body to prevent them from flowing back to the aquaculture water body.

[0045] In some embodiments of the utility model, the oxygenation device further includes a controller (not shown in the drawings), the controller includes but is not limited to a single chip microcomputer, an FPGA or a PLC, the controller is communicatively connected to a dissolved oxygen sensor (not shown in the drawings), the dissolved oxygen sensor is placed in the aquaculture water body, and the controller controls the power of the oxygen generator and / or the water pump 300 through feedback from the dissolved oxygen sensor. When the oxygen content of the aquaculture water body changes, the controller controls the power of the oxygen generator and / or the water pump 300 to keep the oxygen content of the aquaculture water body within a certain range.

[0046] In some embodiments of the present invention, although the oxygen content of the outlet water of the dissolved oxygen cone 100 can be adjusted by changing the power of the oxygen generator and / or the water pump 300, the above-mentioned adjustment methods are all electronically controlled, which has a certain hysteresis and error. Since the solubility of oxygen in water is related to the water depth, in order to fine-tune the oxygen content of the outlet water of the dissolved oxygen cone 100, the second water-oxygen mixer 500 can be connected to the dissolved oxygen cone 100 by rotation. The utility model defines the position where the guide hole 510 of the second water-oxygen mixer 500 is set downward as the initial position of the second water-oxygen mixer 500. When the oxygen content of the outlet water needs to be increased, the user can manually rotate the second water-oxygen mixer 500 to increase the position of the guide hole 510 in the dissolved oxygen cone 100, thereby fine-tuning the oxygen content of the outlet water of the dissolved oxygen cone 100 in real time and accurately. In order to facilitate the rotation of the second water-oxygen mixer 500, the second water-oxygen mixer 500 extends outward to the outside of the dissolved oxygen cone 100.

[0047] It should be noted that when the second water-oxygen mixer 500 is rotated so that its guide hole 510 is facing upward, the water flow no longer passes through the reflux space 101. Therefore, in this embodiment, the initial position of the second water-oxygen mixer 500 is used as the zero point, and the rotation angle of the second water-oxygen mixer 500 is limited to within the range of ±90°.

[0048] In some embodiments of the utility model, the oxygen enrichment equipment also includes a mounting frame (not shown in the drawings), and the dissolved oxygen cone 100, the oxygen supply device 200 and the water pump 300 are all mounted on the mounting frame. The position of the mounting frame is higher than the liquid level of the aquaculture water body to prevent the aquaculture water body from flowing back from the second water-oxygen mixer 500 into the dissolved oxygen cone 100.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. Oxygen enrichment equipment, characterized in that: include: A dissolved oxygen cone (100) having a top whose size is smaller than that of a bottom; a water inlet and a water outlet are respectively provided at the top and bottom of the dissolved oxygen cone (100); the water inlet is connected to a first water-oxygen mixer (400); the water outlet is connected to a second water-oxygen mixer (500) toward the inside of the dissolved oxygen cone (100); the second water-oxygen mixer (500) and the inner bottom surface of the dissolved oxygen cone (100) are spaced apart and jointly form a reflux space (101); a plurality of guide holes (510) are provided at the bottom of the second water-oxygen mixer (500); the second water-oxygen mixer (500) and the inner cavity of the dissolved oxygen cone (100) are connected through the guide holes (510); A water supply pipe (310), connected to the first water-oxygen mixer (400); The oxygen supply device (200) is provided with an oxygen supply pipe (210), wherein the oxygen supply pipe (210) is connected to the water supply pipe (310) or the first water-oxygen mixer (400).

2. The oxygen enrichment device according to claim 1, characterized in that: The first water-oxygen mixer (400) and the second water-oxygen mixer (500) both comprise a mixing channel (410) and a plurality of turbulent blades (430), and the plurality of turbulent blades (430) are rotatably connected in the mixing channel (410).

3. The oxygen enrichment device according to claim 2, characterized in that: Each of the turbulent fan blades (430) has at least two blades (431) that are offset from each other.

4. The oxygen enrichment device according to claim 1 or 3, characterized in that: The water inlet is connected to the interior of the oxygen-dissolving cone (100) with the first water-oxygen mixer (400).

5. The oxygen enrichment device according to claim 1, characterized in that: One end of the water supply pipe (310) is connected to a water pump (300), and one end of the water pump (300) is connected to a filtering system.

6. The oxygen enrichment device according to claim 5, characterized in that: It also includes a controller, which is communicatively connected to a dissolved oxygen sensor, and the controller controls the oxygen supply device (200) and / or the water pump (300) through feedback from the dissolved oxygen sensor.

7. The oxygen enrichment device according to claim 1, characterized in that: The oxygen supply device (200) includes an oxygen generator, and the oxygen supply pipe (210) is installed with a check valve (220).

8. The oxygen enrichment device according to claim 1, characterized in that: The oxygen dissolving cone (100) is installed with a liquid level meter (600).

9. The oxygen enrichment device according to claim 1, characterized in that: The bottom surface of the oxygen dissolving cone (100) is connected to a drainage pipe (110), and the drainage pipe (110) is provided with an on-off valve (111).

10. The oxygen enrichment device according to claim 1, characterized in that: It also comprises a mounting frame, on which the oxygen dissolving cone (100) and the oxygen supply device (200) are both mounted, and the mounting frame is located higher than the liquid level of the aquaculture water body.

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