KR200223625Y1 - Ventri Supplied Water With Air - Google Patents

Abstract

The present invention is for the use of air compressors (browers and compressors) for the maintenance of dissolved oxygen in aquaculture water and various kinds of water treatment in aquaculture fish farms, or the abandonment system for various aerobic facilities. Excludes and improves the air intake structure by the pressure water of the pump, and relates to an air blower capable of blowing a large amount of air in a small power ratio in the water.

Description

Air blower in water {Ventri Supplied Water With Air}

WATER EJECTOR, which uses the principle of inhaling air by using the flow rate of water, has long been used as a glass aspirator in chemical laboratories. It is used as a decompression device when the pump is difficult to use.

In other words, it is well known that water pressure-induced physics is produced by the flow rate of the jetting water from the jet 6 hole to the nozzle 7 in a straight line.

In view of the inhalation action of these gases (air), an attempt has been made to use the ejector in aquaculture farms to satisfy the dissolved oxygen of the aquaculture (abbreviated as DO). Both the 6 and the nozzles 7 have obtained achievements that are difficult to achieve the purpose, but are not practically available until today due to their poor practicality.

That is, due to the same power consumption as the windmill type gas-liquid contactor developed for the same purpose, the main cause is that the D.O maintenance is not equivalent.

Windmill-type gas-liquid contactor, currently the most popular and in operation, realizes minimal DO maintenance with the lowest power consumption, while the windmill-type gas-liquid contact device causes water to splash into the air due to the rotating wing. As a result of this, the winged fish cannot intercept the groove with the closed end where the swimming fish are occasionally hit and the wound or the killing occurs.

Especially in the case of large fish (sharks, etc.), there is an example of being hit by a single blow, so it is not possible to exclude the Buddhas that cause great damage to the blow.

Therefore, there is an urgent need for the development of an air blower that can maintain proper D.O in such a non-hazardous manner and reduce power consumption as much as possible.

In addition, there is a need for improvement because the power cost required for manufacturing compressed air in the aeration tank of various water treatment facilities to inject a large amount of air into water is excessive compared to the amount of injected air.

In the fish farming industry, high-density farming is used as a means to increase productivity. In this method, a large amount of fish is in a fixed tank, which lowers the D.O of the farmed water.

Natural water of vast area has a D.O of 5.7 when the water temperature is 25 ℃ on average, and all species are growing in the environment of D.O 5.7 or higher of this natural state.

However, in high-density aquaculture, even though the same temperature is 25 ℃, a large number of fish are concentrated and their respiration, other excretion, etc. DO usually fall below 4, this lack of DO is a fish survival It is well known to fish farmers that, of course, excessive DO deficiency is the primary cause of fish deaths.

According to the gas dissolution table for water in the literature (Table 1), it can be seen that D.O and water temperature have a close relationship with each other. In other words, when the water temperature is 0 ℃, D.O is the highest as 10. As D.O appears at 0 at 100 ° C, it can be seen that the higher the water temperature, the lower the D.O.

In the fish farming industry, the water temperature of aquaculture water is aimed at 18 ℃, which is the long-experienced water temperature in which fish are the most active and eat well.The above table shows that DO at 18 ℃ is around 6.6. . This is why most fish farmers prefer air blowers that can maintain near D.O.

The reason that the windmill type gas contactor is most popular is that the machine is not satisfied with the formation of D.O 7 farmed water, but there is no other way to find it.

The present invention was designed to meet the precondition that the power consumption of this windmill gas-liquid contactor is 2HP, and at least the same or higher air blower should be developed with the same power consumption. Therefore, the main reason that the performance of the pump that consumes the same power is limited to 50 mm and the performance of DO 7 cannot be achieved by the conventional single ejector type that has been tried many times is considered as the main cause that has not been put to practical use until now. Became.

In addition, in the above various water treatments, the water temperature of the water treatment becomes a problem, but a cooling facility for increasing the DO cannot be realized economically, and most of the water treatments cover this by excessively inhaling the air by excessively blowing air in the activated sludge tank. . Therefore, the cost of power required for this large amount of air injection is a burden, and countermeasures against it are also expected.

The air blower of the present invention can be equally blown into the water at a power cost of about one tenth of that of the Browau, so it can be said that the facility can expect a significant reduction in power costs.

1 is a cross-sectional view of the air blower in the water according to the present invention

2 is a diaphragm and jet position diagram (plural)

3 is a schematic view of a nozzle block

4 is a gas dissolution table for water

<Description of the code | symbol about the principal part of drawing>

1. Blower body 2. Air intake

3. Pressure water inlet 4. Gas-liquid water outlet

5. Jet 6-1. Primary nozzle block

6-2. Second nozzle block 7. Diaphragm

8. Nozzle (primary) 9. Nozzle (secondary)

A. Pressure path B. Intake air path

C. Gas Flow Path D. Gas Flow Conflict Point

E. Gas-liquid discharge water

Referring to the present invention in detail by the drawings as follows.

A plurality of jets 5 mounted in the diaphragm 7 in the blower body 1 to which the air suction pipe 2 is connected flow from the pressure water inlet 3 to the straight lines C, respectively, in the direction of the gas-liquid collision point D. Air between the block in which the plurality of nozzles 8 are inserted in the primary block 6-1 and the block in which the plurality of nozzles 9 are also in the secondary block 6-2. Was sucked (B1, B2) to allow the maximum amount of air to be sucked.

In addition, each water flow (C) was a secondary collision at the gas-liquid impact point (8) to form a microbubble further to create a state finer than the air particles of any conventional diffuser.

Water was discharged by connecting a 50 mm pump (2HP, 2㎏ / ㎠) to the designed air blower. The water was transferred to 300 l per minute, and the air intake was measured to 20 m 3 per minute. In the case of a conventional brooche, the amount of air comparable to this is blown with a power consumption of about one tenth that consumes 20 HP at 150 diameter, 1150 RPM, and discharge pressure of 0.3 kg / cm 2. In other words, about 4 tonnes of oxygen per minute are incredible.

In addition, it was confirmed that the particle size of the bubble was discharged at a distance of 2.6M, which is white as if milk was sprayed in the water in a super fine state, which cannot be seen in any existing precision diffuser.

This air blower was 2,000g flounder per 800g (normally 5 or less in DO) in 8m diameter culture tank, but water temperature was 22 ℃ (about 6 in DO table). ) Was also measured as DO 7.1, and in terms of DO table, it was confirmed that DO was formed at a water temperature of 15 ° C or lower. This not only made DO of the aquaculture tank optimal for fish at a minimum amount of power, but also achieved a fixed state other than the pump. It confirmed that it was effective as a device. In addition, since a large amount of air can be injected by small power in the water, the essential amount of air in the various kinds of water treatment aeration tanks is a key factor, which greatly contributes to the increase of the aeration effect, and also reduces the cost of power. It is considered to be devised.

Claims (1)

One air inlet is provided in one air inlet body, and two or more jets and two or more nozzles are inserted in a plurality of blocks, and the air is sucked in the gaps, so that air and liquid are mixed as much as possible. A gas-liquid contact air blower that increases the DO synergistic effect by making the bubble state finer by forming a gas-liquid collision point at the center of the discharge port.