Circulating water body monitoring device for rice field fish culture based on Venturi tube

Abstract

The utility model relates to the technical field of rice field fish culture, and discloses a venturi tube-based circulating water body monitoring device for rice field fish culture, which comprises a box body, the bottom of the box body is fixedly connected with a first venturi tube and a second venturi tube, and the first venturi tube and the second venturi tube are in pipeline parallel connection. The bubble nozzles are arranged at the narrowest positions of the first venturi tube and the second venturi tube, nanometer microbubbles are pumped into water in the first venturi tube and the second venturi tube through the microbubble generating unit, and according to the working principle of the venturi tubes, the nanometer microbubbles can be pumped into the water in the first venturi tube and the second venturi tube, so that the nanometer microbubbles can be pumped into the water in the first venturi tube and the second venturi tube. When the oxygen-containing gas is pumped, the flow speed of the Venturi tube at the narrowest position is maximum, the pressure is reduced, and the dissolved amount of the pumped oxygen-containing gas is maximum, so that the oxygen content of the water body is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice field fish farming, in particular to a venturi tube-based circulating water body monitoring device for rice field fish farming. Background Art

[0002] Raising fish on the surface of rice fields can not only obtain fish products, but also use the fish to eat pests and weeds in the rice fields, excrete manure, and turn over the soil to promote fertilizer decomposition, creating good conditions for rice growth. It can generally increase rice production by about 10%, thereby achieving the synergistic effect of symbiosis and growth of rice and fish. The entire process of fish farming in rice fields has strict requirements on water quantity and water quality. There should be neither too much nor too little water, otherwise it will directly affect the growth of fish. In addition, in hot summer weather, a layer of emerald green film will often float on the surface of rice fields that have been storing water for a long time, which may cause hypoxia in the rice field water, causing fish to float or even die.

[0003] To avoid water hypoxia, the existing practice is usually to regularly add new water or replace the water in the rice field pool, or to increase the oxygen content of the water through a fish aeration device. However, this oxygenation operation method is too extensive, and the oxygenation efficiency may be insufficient. Moreover, the oxygenation effect cannot be considered, and it is still impossible to determine whether the oxygen concentration of the water in the entire rice field surface meets the standard. Based on this, a circulating water monitoring device for rice field fish farming based on a Venturi tube is proposed. Utility Model Content

[0004] In order to solve the technical problem of water hypoxia in rice field fish farming, the utility model provides a circulating water monitoring device for rice field fish farming based on a Venturi tube.

[0005] The utility model is implemented by the following technical solutions: a circulating water monitoring device for rice field fish farming based on a venturi tube, comprising a box body, a first venturi tube and a second venturi tube fixedly connected to the bottom of the box body, the first venturi tube and the second venturi tube are in a parallel pipeline relationship, the second venturi tube is located above the first venturi tube, the inner sides of the first venturi tube and the second venturi tube are both provided with a plurality of protrusions, the plurality of protrusions are used to increase the amount of bubbles generated in the water flow, an oxygenation mechanism for pumping microbubbles into the water flow in the venturi tube is provided on one side of the first venturi tube and the second venturi tube, a water pump mechanism for sending the water flow in the rice field into the venturi tube is provided at one end of the first venturi tube, and a water quality detection mechanism for detecting the water quality of the rice field water body is provided at the other end of the first venturi tube.

[0006] As a further improvement of the above scheme, the oxygenation mechanism includes mounting grooves opened on the first venturi tube and the second venturi tube, the mounting grooves are respectively located at the smallest diameters of the two venturi tubes, and bubble nozzles are installed inside the two mounting grooves. A microbubble generating unit is provided above the second venturi tube, and the lower side of the microbubble generating unit is connected to an air supply pipe, and one side of the air supply pipe is connected to the two microbubble generating units at the same time.

[0007] As a further improvement of the above scheme, the water pump mechanism includes a water inlet pipe connected to one side of the box body, one end of the water inlet pipe passes through one side of the box body and extends into the interior of the box body, one end of the water inlet pipe located inside the box body is connected to a water pump, the water pump is fixedly connected to the bottom of the box body, a first connecting pipe is connected between the water pump and the first venturi tube, and a second connecting pipe is connected to the other side of the first venturi tube, and a filter mesh mechanism for physically filtering the rice field water is provided on the first connecting pipe and the second connecting pipe.

[0008] As a further improvement of the above solution, the filter mechanism includes filter valve units respectively provided on the first connecting pipe and the second connecting pipe, and the filter valve units are each provided with a filter cartridge assembly, and the filter cartridge assembly is a detachable structure.

[0009] As a further improvement of the above solution, the water quality detection mechanism includes a water quality detection unit connected to the second connecting pipe, and a new water pipeline mechanism is provided on one side of the water quality detection unit to re-inject the water flow that meets the water quality test into the rice field;

[0010] The new water pipeline mechanism includes an outlet pipe connected to one side of the water quality detection unit, one end of the outlet pipe extends to the side where the water inlet pipe is located and passes through the outside of the box. The upper side of the water quality detection unit is provided with a reflux pipeline mechanism for returning the water flow that fails the water quality test to the first connecting pipe for re-circulation and purification.

[0011] As a further improvement of the above solution, the return pipe mechanism includes a return pipe connected between the first connecting pipe and the upper side of the water quality detection unit, and the connection point where the return pipe intersects with the first connecting pipe is located upstream of the filter valve unit.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model arranges bubble nozzles at the narrowest points of the first and second venturi tubes, and pumps nano-microbubbles into the water in the first and second venturi tubes through a microbubble generating unit. According to the working principle of the venturi tube, the fluid velocity is the highest and the pressure drops at the narrowest point of the venturi tube. At this time, the amount of oxygen-containing gas pumped in is the highest, thereby effectively increasing the oxygen content of the water.

[0014] 2. The utility model filters algae and other solid waste in the paddy field water by respectively arranging filter mesh cylinder assemblies on the first connecting pipe and the second connecting pipe. The treated water is further tested for water quality by a water quality detection unit. When it is detected that the water quality does not meet the standard, the internal switch of the water quality detection unit is started to send the water flow back to the first connecting pipe for a new round of purification treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a venturi tube-based circulating water monitoring device for rice field fish farming provided by the utility model;

[0016] Figure 2 It is a partial structural view of the utility model;

[0017] Figure 3 for Figure 2 sectional view of

[0018] Figure 4 for Figure 2 Schematic diagram of the installation of the filter screen cartridge assembly (16);

[0019] Figure 5 It is a cross-sectional view of the first venturi tube (10) and the second venturi tube (14) in the utility model.

[0020] Description of main symbols:

[0021] 1. Box body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Return pipe; 5. Water quality detection unit; 6. Microbubble generating unit; 7. Water pump; 8. First connecting pipe; 9. Filter valve unit; 10. First venturi tube; 12. Second connecting pipe; 13. Mounting slot; 14. Second venturi tube; 15. Bubble nozzle; 16. Filter screen assembly; 17. Bump; 18. Air supply pipe. DETAILED DESCRIPTION

[0022] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example:

[0024] Please combine Figure 1-Figure 5 The embodiment of the invention is a venturi tube-based circulating water monitoring device for rice field fish farming, comprising a box 1, through which the core device of the utility model can be integratedly managed, which is convenient for transportation and carrying. The bottom of the box 1 is fixedly connected with a first venturi tube 10 and a second venturi tube 14. Figure 5 As shown, the venturi tube in this embodiment is a culvert type structure opened on the platform. In other embodiments, a venturi tube with a tapered tube docking structure can also be used, which also falls within the protection scope of the present utility model. The first venturi tube 10 and the second venturi tube 14 are in a parallel pipeline relationship. The second venturi tube 14 is located above the first venturi tube 10. The inner sides of the first venturi tube 10 and the second venturi tube 14 are both provided with a plurality of protrusions 17. The plurality of protrusions 17 are used to increase the amount of bubbles generated in the water flow. One side of the first venturi tube 10 and the second venturi tube 14 is provided with an oxygenation mechanism for pumping microbubbles into the water flow in the venturi tube. One end of the first venturi tube 10 is provided with a water pump mechanism for sending the water flow in the rice field into the venturi tube. The other end of the first venturi tube 10 is provided with a water quality detection mechanism for detecting the water quality of the rice field water body.

[0025] Please combine Figure 2 and Figure 5 As shown, the oxygenation mechanism includes mounting grooves 13 provided on the first venturi tube 10 and the second venturi tube 14. The mounting grooves 13 are respectively located at the smallest diameters of the two venturi tubes. Bubble nozzles 15 are installed inside the two mounting grooves 13. A microbubble generating unit 6 is provided above the second venturi tube 14. The lower side of the microbubble generating unit 6 is connected to an air supply pipe 18, and one side of the air supply pipe 18 is connected to the two microbubble generating units 6 at the same time.

[0026] It should be noted that there are currently various technical routes for producing microbubbles in water, including dispersed air method, dissolved air release method, ultrasonic cavitation method, electrolysis method, chemical method, etc. In this embodiment, the microbubble generating unit 6 is an ultrasonic generator. The water body in contact with the bubble nozzle 15 causes pressure changes under the high-frequency vibration of the ultrasonic wave, causing cavitation inside the liquid, thereby generating micro-nano bubbles.

[0027] Please combine Figure 2 As shown, the water pump mechanism includes a water inlet pipe 2 connected to one side of the box body 1, one end of the water inlet pipe 2 passes through one side of the box body 1 and extends to the interior of the box body 1, and one end of the water inlet pipe 2 located inside the box body 1 is connected to a water pump 7, and the water pump 7 is fixedly connected to the bottom of the box body 1. A first connecting pipe 8 is connected between the water pump 7 and the first venturi tube 10, and the other side of the first venturi tube 10 is connected to a second connecting pipe 12. The first connecting pipe 8 and the second connecting pipe 12 are provided with a filter mesh mechanism for physically filtering the rice field water.

[0028] like Figure 3 and Figure 4 As shown, the filter mechanism includes filter valve units 9 respectively provided on the first connecting pipe 8 and the second connecting pipe 12. A filter cylinder assembly 16 is provided on the filter valve unit 9. The filter cylinder assembly 16 is a detachable structure. Water flows into the cylinder mouth of the filter cylinder assembly 16. Algae and other impurities can be retained in the cylinder, and the filtered water is leached from the other side of the filter cylinder assembly 16.

[0029] Please combine Figure 2 As shown, the water quality detection mechanism includes a water quality detection unit 5 connected to the second connecting pipe 12. A new water pipeline mechanism is provided on one side of the water quality detection unit 5 to re-inject the water flow that has passed the water quality test into the rice field; the water quality detection unit 5 has a built-in pH detector, which can detect the filtered water and provide a window for people to check the current water quality status to take the next step.

[0030] Please combine Figure 2 As shown, the new water pipeline mechanism includes a water outlet pipe 3 connected to one side of the water quality detection unit 5, one end of the water outlet pipe 3 extends to the side where the water inlet pipe 2 is located and passes through the outside of the box 1, and the upper side of the water quality detection unit 5 is provided with a reflux pipeline mechanism for returning the water flow that fails the water quality test to the first connecting pipe 8 for re-circulation and purification.

[0031] Please combine Figure 2 The return pipe mechanism includes a return pipe 4 connected between the first connecting pipe 8 and the upper side of the water quality detection unit 5 , and the connection point where the return pipe 4 and the first connecting pipe 8 meet is located upstream of the filter valve unit 9 .

[0032] The implementation principle of a venturi-based circulating water monitoring device for rice field fish farming in the embodiment of the present application is as follows: the water in the rice field fish farming is connected to the water inlet pipe 2 through a pipe, and the outlet pipe 3 is re-injected into the rice field fish farming paddy field, and the water pump 7 is started. The water flows from the first connecting pipe 8 into the first venturi tube 10 and the second venturi tube 14 connected in parallel, and then is discharged from the second connecting pipe 12 and enters the water quality detection unit 5. When the filter valve unit 9 is set on the first connecting pipe 8 and the second connecting pipe 12, the solid impurities such as algae in the rice field water can be filtered through the filter screen assembly 16 on the filter valve unit 9. When the filtered algae and other water garbage cause the filter screen assembly 16 to When the component 16 is blocked, the filter cylinder component 16 can be disassembled and cleaned. When the water flows into the first venturi tube 10 and the second venturi tube 14, the microbubble generating unit 6 is started, and the prepared microbubbles dissolve the oxygen-containing gas into the water through the bubble nozzle 15. The two venturi tubes are provided with a protrusion 17 inside. When the water flows through, the protrusion 17 can increase the amount of gas generated. The water entering the water quality detection unit 5 is detected by the built-in detection device. For unqualified water quality, the switch can be started to return the water to the first connecting pipe 8 for the next cycle of purification. For water that passes the water quality test, it is directly injected into the paddy field for rice fish farming through the outlet pipe 3 again.

[0033] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A circulating water monitoring device for rice field fish farming based on a Venturi tube, comprising a housing (1), characterized in that: The bottom of the box (1) is fixedly connected with a first venturi tube (10) and a second venturi tube (14), the first venturi tube (10) and the second venturi tube (14) are in a pipeline parallel relationship, the second venturi tube (14) is located above the first venturi tube (10), the inner sides of the first venturi tube (10) and the second venturi tube (14) are both provided with a plurality of protrusions (17), the plurality of protrusions (17) are used to increase the amount of bubbles generated in the water flow, one side of the first venturi tube (10) and the second venturi tube (14) is provided with an oxygenation mechanism for pumping microbubbles into the water flow in the venturi tube, one end of the first venturi tube (10) is provided with a water pump mechanism for sending water flow in the rice field into the venturi tube, and the other end of the first venturi tube (10) is provided with a water quality detection mechanism for detecting the water quality of the rice field water body.

2. A venturi tube-based circulating water monitoring device for rice field fish farming as claimed in claim 1, characterized in that: The oxygenation mechanism comprises mounting grooves (13) provided on both the first venturi tube (10) and the second venturi tube (14), wherein the mounting grooves (13) are respectively located at the smallest diameters of the two venturi tubes, and bubble nozzles (15) are installed inside the two mounting grooves (13). A microbubble generating unit (6) is provided above the second venturi tube (14), and the lower side of the microbubble generating unit (6) is connected to an air supply pipe (18), and one side of the air supply pipe (18) is simultaneously connected to the two microbubble generating units (6).

3. The venturi tube-based circulating water monitoring device for rice field fish farming according to claim 1, characterized in that: The water pump mechanism comprises a water inlet pipe (2) connected to one side of the box (1), one end of the water inlet pipe (2) passes through one side of the box (1) and extends into the interior of the box (1), one end of the water inlet pipe (2) located inside the box (1) is connected to a water pump (7), the water pump (7) is fixedly connected to the bottom of the box (1), a first connecting pipe (8) is connected between the water pump (7) and the first venturi tube (10), the other side of the first venturi tube (10) is connected to a second connecting pipe (12), and a filter mechanism for physically filtering the paddy field water is provided on the first connecting pipe (8) and the second connecting pipe (12).

4. A venturi tube-based circulating water monitoring device for rice field fish farming as claimed in claim 3, characterized in that: The filter mechanism comprises filter valve units (9) respectively arranged on the first connecting pipe (8) and the second connecting pipe (12), and the filter valve units (9) are each provided with a filter cylinder assembly (16), and the filter cylinder assembly (16) is a detachable structure.

5. The venturi tube-based circulating water monitoring device for rice field fish farming according to claim 4, characterized in that: The water quality detection mechanism comprises a water quality detection unit (5) connected to the second connecting pipe (12), and a new water pipeline mechanism is provided on one side of the water quality detection unit (5) for re-injecting water that has passed the water quality test into the rice field; The new water pipeline mechanism comprises a water outlet pipe (3) connected to one side of the water quality detection unit (5), one end of the water outlet pipe (3) extends to the side where the water inlet pipe (2) is located and passes through the outside of the box (1), and a return pipeline mechanism is provided on the upper side of the water quality detection unit (5) for returning water that fails the water quality test to the first connecting pipe (8) for recirculation and purification.

6. A venturi tube-based circulating water monitoring device for rice field fish farming as claimed in claim 5, characterized in that: The return pipe mechanism comprises a return pipe (4) connected between the first connecting pipe (8) and the upper side of the water quality detection unit (5), and the connection point where the return pipe (4) and the first connecting pipe (8) meet is located upstream of the filter valve unit (9).

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