Multi-channel drop water oxygenation device for running water culture

Abstract

The invention relates to a multi-channel water drop oxygenation device for running water culture, which comprises a multi-stage step body and water insulation blocks, the multi-stage step body is composed of a plurality of stages of step monomers, a plurality of water insulation blocks are fixed at the front end part of the top surface of each stage of step monomer, and a water drop channel is formed between the adjacent water insulation blocks on each stage of step monomer. The device is simple in structure, convenient to manage and maintain, low in cost and capable of effectively improving the yield of cultured aquatic products. According to the invention, the purpose of increasing dissolved oxygen is realized by mainly utilizing the terrain fall and increasing the contact area and contact time with air in the flowing water process, so that the trouble of equipment configuration is avoided. And the stage number of the step single bodies can be designed according to the height of the breeding water inlet according to local conditions. The device is especially suitable for running water breeding modes with terrain fall and difficult circuit erection and pipeline maintenance in mountainous areas and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of pond ecological aquaculture, and specifically discloses a multi-channel waterfall oxygenation device for flow aquaculture. Background Art

[0002] Dissolved oxygen (DO) refers to the oxygen (O2) element dissolved in water in a molecular state (usually expressed in mg / L). As the most critical water quality indicator in ponds, it not only provides the oxygen necessary for the life activities of farmed animals, but also facilitates the growth and reproduction of aerobic microorganisms, promotes the degradation of organic matter, reduces the effects of toxic and harmful substances, and inhibits the activities of harmful anaerobic microorganisms. In the process of aquaculture, ensuring sufficient dissolved oxygen helps farmed animals to improve their digestion and absorption of nutrients, accelerate growth, enhance tolerance to other adverse environmental factors (such as ammonia nitrogen, nitrite, etc.), and enhance resistance to environmental stress. When the dissolved oxygen concentration in water is insufficient, fish and other aquatic organisms are in an oxygen-deficient environment, causing growth restriction, decreased immune function, and even death; low dissolved oxygen will also promote the production of harmful substances such as ammonia nitrogen, nitrite, and hydrogen sulfide in the pool water, and increase their toxicity. In severe cases, it can cause the death of a large number of aquatic organisms. In addition, dissolved oxygen can effectively reflect the self-purification ability of water bodies. A decrease in dissolved oxygen concentration may lead to problems such as eutrophication and organic pollution. Therefore, the dissolved oxygen index has been listed as one of the important indicators for water quality monitoring.

[0003] In the natural environment, the surface of the water body is in direct contact with the air, and the water body can freely exchange substances and energy with each other to achieve the saturated content of dissolved oxygen. However, due to the complex ecosystem in the water body, affected by biological factors such as photosynthesis and respiration, the dissolved oxygen in the water deviates from the equilibrium concentration, resulting in uneven distribution of dissolved oxygen in time and space. Commonly used artificial oxygenation methods include mechanical oxygenation and chemical oxygenation. Mechanical oxygenation: mainly by pumping new water into the aquaculture water body while oxygenating, or mechanically stirring the water body to increase the contact between the water body and the air and accelerate the dissolution of oxygen. However, the initial cost of setting up the circuit and emergency generator required for this method is high, and the lines and equipment are also easily damaged and need to be regularly repaired, which increases the later cost. In addition, mechanical oxygenation is mostly local oxygenation, and the mechanical operation noise is large, which is easy to affect the growth of aquatic animals; chemical oxygenation: mainly using some oxygen-producing chemicals (such as sodium percarbonate, calcium peroxide, hydrogen peroxide, etc.) to increase the dissolved oxygen content of the water body. It is generally used for emergency use when electricity is difficult to supply or when acute floating occurs. It has a quick oxygenation effect, but the amount of the drug used is large and it is not suitable for storage. Excessive use can easily cause harm to aquatic animals. It should not be used during fish fry cultivation to prevent the occurrence of bubble disease.

[0004] Pond aquaculture in mountainous areas is affected by the terrain and environment, and is mostly flowing water aquaculture. Circuit installation and pipeline maintenance are more difficult, and traditional pond aquaculture oxygenation methods cannot be used. It is necessary to develop an aquaculture oxygenation method that requires low investment, low operating costs, small footprint, and easy management and maintenance based on the characteristics of flowing water pond aquaculture in mountainous areas and in combination with the topography, so as to promote the growth of aquaculture products and protect the natural water environment. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multi-channel waterfall oxygenation device for flow aquaculture, which has a simple structure, convenient management and maintenance, low cost, can provide sufficient oxygen to farmed fish, and can completely replace the use of oxygenators.

[0006] According to the technical solution provided by the present invention, the multi-channel waterfall oxygenation device for flow aquaculture includes a multi-level step body and a water-isolating block. The multi-level step body is composed of a plurality of step monomers. A plurality of water-isolating blocks are fixed to the front end of the top face of each step monomer, and a waterfall channel is formed between adjacent water-isolating blocks on each step monomer.

[0007] Preferably, the water-blocks on two adjacent step monomers are staggered.

[0008] Preferably, the top surface of the step monomer is a concave arc surface, and the height of the front end portion of the top surface of the step monomer is higher than the height of the rear end portion of the top surface.

[0009] Preferably, the water-blocking block is in the shape of a vertical triangular prism, with one edge of the water-blocking block facing the top surface of the step monomer, and the other two edges of the water-blocking block facing both sides of the front end of the top surface of the step monomer.

[0010] Preferably, the water-block is in a cubic shape, and pebbles are fixed on the top surface of the step monomer corresponding to the outer side of the water-block.

[0011] Preferably, the height A of the multi-step body is 60-120 cm, the width B is 100-200 cm, and the length C is 60-80 cm. The height D of each step unit on the multi-step body is 20-30 cm, and the width E is 40-50 cm.

[0012] Preferably, the multi-step body is made of concrete or stainless steel.

[0013] Preferably, the bottom side length H of the water-isolating block is 4-6 cm, and the height G of the water-isolating block is 8-12 cm.

[0014] Preferably, the width I of the front end of the drop channel is 15-20 cm.

[0015] The present invention has the following advantages: 1. The invention has a simple structure, convenient management and maintenance, low cost, and can effectively increase the output of aquatic products.

[0016] 2. The present invention mainly utilizes the terrain drop to increase the contact area and contact time between water and air during the flow process to achieve the purpose of increasing dissolved oxygen, so there is no trouble in configuring equipment. And the number of steps can be designed according to the height of the aquaculture water inlet, and it is suitable for the flow aquaculture mode in mountainous areas where there is a terrain drop and it is difficult to set up circuits and maintain pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of embodiment 1 of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the water-block in Example 1 of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of embodiment 2 of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the water-block in Example 2 of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Example 1 A multi-channel waterfall oxygenation device for flow aquaculture, such as Figure 1 and Figure 2 As shown, it includes a multi-level step body 1 and a water-blocking block 2. The multi-level step body 1 is composed of a plurality of step monomers. A plurality of water-blocking blocks 2 are fixed to the front end of the top face of each step monomer, and a water drop channel is formed between adjacent water-blocking blocks 2 on each step monomer.

[0023] The water-blocking blocks 2 on two adjacent step monomers are arranged in a staggered manner.

[0024] The top surface of the step monomer is a concave arc surface, and the height of the front end of the top surface of the step monomer is higher than the height of the rear end of the top surface.

[0025] The water-blocking block 2 is in the shape of a vertical triangular prism, and one edge of the water-blocking block 2 faces the top surface of the step monomer, and the other two edges of the water-blocking block 2 face the two sides of the front end of the top surface of the step monomer.

[0026] The multi-step body 1 has a height A of 60-120 cm, a width B of 100-200 cm, and a length C of 60-80 cm. The height D of each step unit on the multi-step body 1 is 20-30 cm, and a width E of 40-50 cm.

[0027] The multi-level step body 1 is made of concrete or stainless steel. If the multi-level step body 1 is made of concrete, the multi-level step body 1 can be temporarily dug and cast at the water inlet of the breeding pond; if the multi-level step body 1 is made of stainless steel, the multi-level step body 1 can be processed in a factory according to the size before being put into use.

[0028] The bottom side length H of the water-isolating block 2 is 4-6 cm, and the height G of the water-isolating block 2 is 8-12 cm.

[0029] The width I of the front end of the drop channel is 15-20 cm.

[0030] When the multi-channel waterfall oxygenation device for flow aquaculture of Example 1 is actually used, the upstream water forms multiple streams under the water flow separation effect of the water barrier 2, thereby increasing the flow velocity of the water flow. The high-speed water flow falls from the waterfall channel and hits the concave arc top surface of the step unit, thereby increasing the impact area of ​​the water flow from top to bottom. The water flow flows along the concave arc surface during the falling impact process, wraps the air, and greatly increases the dissolved oxygen content in the water body, thereby achieving the purpose of fully increasing the dissolved oxygen in the water body.

[0031] Example 2 A multi-channel waterfall oxygenation device for flow aquaculture, such as Figure 3 and Figure 4 As shown, it includes a multi-level step body 1 and a water-blocking block 2. The multi-level step body 1 is composed of a plurality of step monomers. A plurality of water-blocking blocks 2 are fixed to the front end of the top face of each step monomer, and a water drop channel is formed between adjacent water-blocking blocks 2 on each step monomer.

[0032] The water-blocking blocks 2 on two adjacent step monomers are arranged in a staggered manner.

[0033] The water-blocking block 2 is in a cubic shape, and pebbles 3 are fixed on the top surface of the step monomer corresponding to the outer side of the water-blocking block 2 .

[0034] The multi-step body 1 has a height A of 60-120 cm, a width B of 100-200 cm, and a length C of 60-80 cm. The height D of each step unit on the multi-step body 1 is 20-30 cm, and a width E of 40-50 cm.

[0035] The multi-level step body 1 is made of concrete or stainless steel. If the multi-level step body 1 is made of concrete, the multi-level step body 1 can be temporarily dug and cast at the water inlet of the breeding pond; if the multi-level step body 1 is made of stainless steel, the multi-level step body 1 can be processed in a factory according to the size before being put into use.

[0036] The bottom side length H of the water-isolating block 2 is 4-6 cm, and the height G of the water-isolating block 2 is 8-12 cm.

[0037] The width I of the front end of the drop channel is 15-20 cm.

[0038] When the multi-channel waterfall oxygenation device for flow aquaculture of Example 2 is actually used, the upstream water forms multiple streams under the water flow separation effect of the water barrier 2, thereby increasing the flow velocity of the water. The high-velocity water falls from the waterfall channel and hits the pebbles 3 fixed on the top surface of the step monomer, thereby increasing the impact area of ​​the water from top to bottom, which not only increases the contact area with the air, but also forms many fine bubbles, greatly increasing the dissolved oxygen content in the water body, thereby achieving the purpose of fully increasing the dissolved oxygen in the water body.

[0039] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A multi-channel waterfall oxygenation device for flowing water aquaculture, characterized by: It comprises a multi-step body (1) and a water barrier block (2). The multi-step body (1) is composed of a plurality of step monomers. A plurality of water barrier blocks (2) are fixed to the front end of the top surface of each step monomer. A water drop channel is formed between adjacent water barrier blocks (2) on each step monomer.

2. The multi-channel waterfall oxygenation device for flowing water aquaculture according to claim 1, characterized in that: The water-isolating blocks (2) on two adjacent step monomers are arranged in a staggered manner.

3. The multi-channel waterfall oxygenation device for flowing water aquaculture as claimed in claim 2 is characterized in that: The top surface of the step monomer is a concave arc surface, and the height of the front end of the top surface of the step monomer is higher than the height of the rear end of the top surface.

4. The multi-channel waterfall oxygenation device for flowing water aquaculture as claimed in claim 3 is characterized by: The water-blocking block (2) is in the shape of a vertical triangular prism, and one of the edges of the water-blocking block (2) faces the top surface of the step monomer, while the other two edges of the water-blocking block (2) face the two sides of the front end of the top surface of the step monomer.

5. The multi-channel waterfall oxygenation device for flowing water aquaculture as claimed in claim 2 is characterized by: The water-isolating block (2) is in a cubic shape, and pebbles (3) are fixed on the top surface of the step monomer corresponding to the outside of the water-isolating block (2).

6. The multi-channel waterfall oxygenation device for flow aquaculture according to any one of claims 1 to 5, characterized in that: The multi-step body (1) has a height A of 60-120 cm, a width B of 100-200 cm, and a length C of 60-80 cm. The height D of each step unit on the multi-step body (1) is 20-30 cm, and a width E of 40-50 cm.

7. The multi-channel waterfall oxygenation device for flowing water aquaculture according to claim 6, characterized in that: The multi-step step body (1) is made of concrete or stainless steel.

8. The multi-channel waterfall oxygenation device for flow aquaculture according to claim 4 or 5, characterized in that: The bottom side length H of the water-isolating block (2) is 4-6 cm, and the height G of the water-isolating block (2) is 8-12 cm.

9. The multi-channel waterfall oxygenation device for flowing water aquaculture according to claim 1, characterized in that: The width I of the front end of the drop channel is 15-20 cm.

Images