JPH0684849U - Gas dissolution equipment for aquaculture - Google Patents

Abstract

(57) [Summary] [Structure] This is a gas-dissolving device for aquaculture provided in an aquaculture tank, and an impeller 47 rotated by an electric motor 41 is provided in a stirring chamber 58. The rotation of the impeller 47 causes water in the aquarium to A water-dissolving gas such as CO ₂ is introduced into the stirring chamber 58 from the water inlet 45 and from the air inlet pipe 42, respectively, and a dissolution mechanism 101 for stirring and mixing the water and the gas, and a lower outer peripheral side of the stirring chamber 58 are provided. A fluid swirling member 102 for passing a mixture of water and gas from a communication port 54 to a spiral water passage 76 provided in an outer cylinder 74, and an end opening 75 of the water passage 76.
A bottom cover 91 is provided at the lower end portion of the stretching cylinder 8 that allows water to flow down to the bottom, and a stretching member 103 that sends water from the water outlet 9 provided in the bottom cover into the water tank. [Effect] Stir chamber 58, spiral water passage 76, extension tube 8
Therefore, the gas dissolves in the water, and the gas is sufficiently dissolved in the water due to the length of the water passage 76, and the gas is not wasted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This device is installed in a culture tank for algae and fish, and a gas that dissolves in water such as carbon dioxide and oxygen is supplied to the water in the aquarium to promote the growth of algae and fish in the aquarium. The present invention relates to a gas dissolving device for use.

[0002]

[Prior art]

Conventionally, as a gas dissolving device for aquaculture used for aquatic aquaculture tanks, a gas such as carbon dioxide (CO ₂ ) is directly introduced into the bottom of the aquaculture tank, and this gas is diffused in the aquarium to float the gas. By naturally dissolving it in water, or by introducing gas into a fixed range of the fixed bottom of the water tank, obstruction of the introduced gas is obstructed by an obstacle provided in the water tank, and the floating time is lengthened. The amount of dissolved gas is increased.

[0003]

[Problems to be solved by the device]

 However, all of the above-mentioned conventional gas dissolving devices for aquaculture are naturally dissolved by floating the gas in the aquaculture tank, so the floating speed of the gas introduced into the bottom of the aquarium is Due to its fast dissolution rate, most of the introduced water floats up and is dissipated from the water surface in the aquarium into the atmosphere and wasted, giving a sufficient amount of gas to the algae in the aquarium. There was a problem that I could not do it.

This invention solves the above-mentioned problems and introduces gas together with water in an aquaculture tank into an agitation chamber in the apparatus to agitate and mix them, and dissolve the gas sufficiently in water. Sending this water into the water tank, or in addition to this, the undissolved gas remaining on the downstream side of the stirring chamber in the device is automatically returned to the stirring chamber and again stirred with water to dissolve in water. By doing so, it is an object of the invention to provide a gas-dissolving device for aquaculture that can reduce waste of water.

[0005]

Means for Solving the Problems The invention of claim 1 is a gas dissolving apparatus for aquaculture, which comprises a dissolving mechanism, a fluid swirling member, and a stretching member, and is provided in an aquaculture tank. Is equipped with an impeller that is rotated by an electric motor in the stirring chamber, and the rotation of the impeller causes the water in the water tank to be supplied to the upper part of the stirring chamber and the water dissolved from the outside of the device to the upper part of the stirring chamber. An air inlet pipe for feeding the gas to be supplied, a communication port is formed on the outer peripheral side of the lower part of the stirring chamber, a spiral water passage is formed in the outer cylinder of the fluid swirling member, and the start end opening of the water passage is formed as described above. The extension member is provided with an extension tube whose upper end is connected to the terminal opening of the water passage, and the bottom member provided at the lower end of the extension tube is provided with a water outlet that communicates with the inside of the water tank. It was done.

According to a fourth aspect of the invention, in the apparatus for dissolving aquaculture of the first aspect of the invention, the fluid swirling mechanism has an inner cylinder that coaxially penetrates the outer cylinder of the vertical axis. A spiral water passage is formed between the cylinder and the outer cylinder, and the upper end of the inner cylinder is communicated with the stirring chamber through a hole provided at the center of the lower wall of the stirring chamber of the dissolution mechanism, The configuration is such that the lower end of the cylinder is communicated with the upper end of the stretching cylinder.

[0007]

[Action]

 In the aquaculture gas dissolving device according to the invention of claim 1, when the dissolving device is installed in the aquaculture water tank, the electric motor of the dissolving mechanism is driven, and the impeller in the stirring chamber is rotated, the impeller moves in the aquarium. Of water from the water inlet to the agitating chamber, and from this agitating chamber to the starting end opening of the fluid swirling member through the communication port, and the gas that dissolves in water such as carbon dioxide and oxygen from the outside of the dissolver. The gas is supplied into the stirring chamber by the trachea, and the function of stirring and mixing the gas and water in the stirring chamber is simultaneously performed.

Then, a part of the gas comes into contact with the water by stirring and mixing the water and the gas with the impeller, and the remaining part of the gas is mixed with the water from the communication port to the starting end opening of the fluid swirling member. Send out. Next, the sent mixture of water and gas passes through the spiral water passage provided in the fluid swirl member and reaches the end opening of this passage, and the spiral water passage is smaller than the straight passage. Since the mixture is long, the passage time of the mixture is long, and the mixture swirls strongly so that the gas is sufficiently dissolved in the water. Furthermore, the water in which the gas was melted entered the upper end of the drawing tube from the terminal opening of the spiral water passage, and flowed down inside the drawing tube until it reached the bottom lid provided at the lower end of the drawing tube, and remained in the meantime. The gas dissolves in the water, and the water in which the gas is sufficiently dissolved can be sent out from the water outlet into the water tank.

In addition to the function of the above-mentioned dissolving device according to the invention of claim 1, the aquaculture gas dissolving device according to the invention of claim 4 has the function of removing undissolved water contained in the drawing cylinder mixed with water. The gas separates from the water and rises without being sent to the water tank, and returns to the center of the stirring chamber from the hole provided in the lower wall of the stirring chamber through the inner cylinder provided in the center of the fluid swirling member. It can be stirred and mixed with water in the stirring chamber by rotation.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, 101 is a dissolving mechanism, 102 is a fluid swirling member connected below the dissolving mechanism 101, and 103 is an extending member connected below the fluid swirling member 102. I am configuring.

In the melting mechanism 101, the melting mechanism body 4 and the connecting body 5 are sequentially arranged below the upper lid 1, and the face plate 2 is provided outside the front wall 40a of the melting mechanism body 4 with a filtering member 3 such as filter cotton interposed therebetween. , And a plurality of suction plates 10 are fixed to the back wall of the melting mechanism body 4 so as to project to the back side.

The melting mechanism 101 will be described in detail. As shown in FIG. 4, the melting mechanism main body 4 is formed in a box shape with an open upper surface, and has a sealed power source set (not shown) and an electric motor 41 inside. Are fixed, and an intake pipe 42 extending vertically is provided on the outer surface of the front wall 40a. The intake pipe 42 has an upper end opened and a lower end communicated with an impeller storage space 43 in a peripheral wall 40c projecting downward from a front side portion of the bottom wall 40b of the main body 4. The accommodation space 43 constitutes an upper part of a stirring chamber 58 described later.

At the lower end of the front wall 40a, two water inlets 45 located on both sides of the air intake pipe 42 are formed, and the water inlets 45 are connected to the space 43, and both end portions of the outer surface of the front wall 40a are connected. Is provided with two guide grooves 46 extending parallel to the vertical direction. Below the bottom wall 40b, there are provided hook-shaped protrusions 48 facing each other at two positions near the front side and the back side.

In the face plate 2, the front side portion is formed in a convex arc shape, both side portions thereof are bent to the back side, and the ridge portions 21 projecting opposite to each other are formed at the back side edge portions of both sides. The parts 21 are engaged with the guide grooves 46, respectively, and are held outside the front wall 40a of the main body 4, and the lower end of the face plate 2 is supported on the bottom part protruding outside the front wall 40a of the main body 4. The front side of the face plate 2 is provided with a plurality of vertically adjustable slots 22 at an intermediate portion in the vertical direction and an adjustment knob 23 arranged on one side of these, and the amount of water entering is adjusted by operating the adjustment knob 23. It is configured to do. Since this configuration is general, it will not be described in detail.

The filtering member 3 is interposed between the front wall 40 a of the main body 4 and the face plate 2, and the lower surface of the filtering member 3 is supported on the bottom wall 40 b protruding to the outside of the front wall 40 a of the main body 4. Above the body 4, the face plate 2 and the filter member 3, an upper lid 1 is provided to cover them.

As shown in FIG. 3, the upper lid 1 is provided with an air inlet 11 having a small upper diameter and a lower lower diameter than the upper portion in the front portion, and an electric wire insertion hole 12 in an appropriate position in the rear portion. The power supply set and the power supply line to the electric motor 41 are connected to the power supply outside the water tank through the insertion port 12. Further, columnar bodies 13 are respectively projected downward at the four corners of the upper lid 1, and the columnar bodies 13 are provided at the four corners of the main body 4 and are fitted into the tubular bodies 49 extending in the vertical direction. Thus, the upper lid 1 is detachably fixed to the main body 4. In this state, the lower part of the inlet 11 is fitted to the upper end of the inlet pipe 42 provided in the main body 4, and they are communicated with each other.

The impeller accommodating space 43 in the peripheral wall body 40c formed below the bottom wall 40b of the main body 4 accommodates the impeller 47 driven by the electric motor 41, and the peripheral wall body 40c surrounding the outer periphery of the space 43 is accommodated in the impeller 47. Connect the connecting bodies 5.

As shown in FIG. 5, the connecting body 5 is provided with a stirring chamber 58 that includes the above-mentioned space 43 inside a peripheral wall 51 and a lower wall 57, and an upper end opening of the peripheral wall 51. Two arcuate edges 52 are formed on the outer peripheral side of the part, and a notch 53 is formed between them. These notches 53 are passed through the two hook-shaped protrusions 48 protruding downward from the bottom wall 40b of the main body 4 from below, respectively, and the connecting body 5 is rotated by an appropriate angle, whereby the arc-shaped edge 52 is removed. The hook-shaped protrusion 48 and the bottom wall 40b of the main body 4 are detachably fixed.

At the lower end of the peripheral wall 51 of the connecting body 5, an appropriate portion in the circumferential direction is bulged toward the outer peripheral side, and a communication passage 54 a is formed in this bulging portion, and the communication passage 54 a and the lower wall 57 are formed. The communication hole 54b is formed with the communication hole 54b, and the hole 56 is also formed in the central portion of the lower wall 57. Further, an annular wall 55 having a larger diameter and a shorter axial length than the peripheral wall 51 is formed below the lower wall 57 in the connecting body 5, and the inside of the annular wall 55 is communicated with the stirring chamber 58 via the communication port 54. There is.

The fluid revolving member 102 is composed of an upper revolving structure 6 and a lower revolving structure 7. As shown in FIG. 6, the upper swing body 6 has a spiral lid plate 62 formed between an upper inner cylinder 61 and an intermediate cylinder 64 arranged concentrically, and the upper end of the lid plate 62 and the lid plate 62 are formed. A start end opening 65 is formed between the lower end and an end plate 63 protruding upward.

The small-diameter upper portion 64a of the intermediate cylinder 64 is fitted and inserted into the annular wall 55 of the connecting body 5 without any clearance, and the starting end opening 65 and the communication port 54 provided in the connecting body 5 are communicated with each other, and the intermediate cylinder 64 is connected to the annular wall. It is fixed to 55 by an appropriate means. Further, the upper end of the intermediate cylinder 64 is brought into contact with or close to the lower wall 57 of the connecting body 5, and the lower end of the annular wall 54 is brought into contact with the step portion 64b of the intermediate cylinder 64. A lower portion 64c having a diameter slightly larger than that of the small diameter upper portion 64a is provided below the step portion 64b of the intermediate cylinder 64.

The lower revolving structure 7 has a spiral plate 72 formed between a lower inner cylinder 71 and an outer cylinder 74 arranged concentrically, and a partition plate 73 is projected upward from the upper end of the spiral plate 72. The upper part of the outer cylinder 74 is fitted to the lower part 64c of the intermediate cylinder 64 and the outer periphery of the annular wall 55 of the connecting body 5 without any gap, and these are fixed by appropriate means. The spiral water passage 7 6 is hermetically sealed between the spiral cover plate 62 of the upper swing body 6 and the start end of the spiral plate 72 of the lower swing body 7 and between the intermediate portion and the end portion of the spiral plate 72. Is formed in series, and the upper portion of the lower inner cylinder 71 is fitted to the outer periphery of the lower portion of the upper inner cylinder 61 to form the gas collecting passages 67 and 77 inside them, and the upper end of the gas collecting passage 67 is formed. The opening is arranged so as to include the hole 56 provided in the lower wall 57 of the connecting body 5. The upper end of the partition plate 73 is in contact with the lower end of the end plate 63.

The stretching member 103 is composed of a stretching cylinder 8 and a bottom cover 9. The extension cylinder 8 has its upper end fitted to the inner peripheral surface of the outer cylinder 74 of the lower revolving unit 7 without a gap, and these are detachably fixed by an appropriate means. Further, the bottom lid 9 has a large number of water outlets 91 formed on the front side of the lower step portion 92 of the large outer diameter at small intervals in the circumferential direction, and an upper step portion 93 of an outer diameter smaller than that of the lower step portion 92 is formed at the lower end of the extension tube 8. It is fitted and fixed on the inner peripheral surface of the part without any gap. The effective length of the stretching member 103 can be increased by fixing the stretching cylinder 8 and the outer cylinder 74 via a joint pipe between them.

In the gas dissolving apparatus of the embodiment configured as described above, after assembling the respective parts, the plurality of adsorption plates 10 provided on the back side of the dissolving mechanism main body 4 are provided on the inner wall surface of the aquaculture tank (not shown). By adsorbing, the entire gas dissolution apparatus is installed in the water in the water tank.

A gas supply pipe (not shown) such as carbon dioxide (CO ₂ ) or oxygen (O ₂ ) is connected to an air inlet 11 provided in the upper lid 1 of the dissolution mechanism 101, and the supply pipe is supplied from outside the water tank. At the same time when the supply of the gas to the air inlet 11 is started, the electric motor 41 provided in the main body 4 is driven to rotate the impeller 47 accommodated in the impeller accommodating space 43 of the main body 4. By the rotation of the impeller 47, the water contained in the space 43 and the stirring chamber 58 connected to the space 43 below is agitated and mixed with the gas supplied from the air inlet 11 to the space 43 through the air inlet pipe 42. The gas dissolves in water.

Then, the water in which the gas is melted and mixed with the gas is rotated by the centrifugal force generated by the rotation of the impeller 47, and the starting end of the spiral water passage 66 provided in the fluid swirling member 102 through the communication passage 54 a and the communication hole 54 b. It is sent to the opening 65. As a result, the water in the water tank passes through the plurality of slots 22 provided in the face plate 2 of the dissolution mechanism 101 through the filtering member 3, and through the water inlet 45 formed at the lower end of the front wall 4a of the dissolution mechanism main body 4 as described above. It is sucked into the space 43, stirred and mixed with the gas supplied in the stirring chamber 58, and sent out to the starting end opening 65 of the spiral water passage 76. When the water in the water tank passes through the filtering member 3, foreign matters such as dust mixed in the water are trapped by the member 3 to prevent these from entering the space 43.

The water sent to the starting end opening 65 of the spiral water passage 76 flows down while being swirled in the spiral water passage 76 by the partition plate 73 or the like in a spiral manner. This water enters the drawing cylinder 8 through the terminal opening 75 and flows down, flows out from the water outlet hole 91 of the bottom lid 9 provided at the lower end of the drawing cylinder 8 and enters the water tank. During this time, the water has a long distance in the spiral water passage 76 and swirls strongly, so that a large amount of the mixed gas dissolves in the water, and even when the water flows down in the stretching cylinder 8, the gas remains Further, the water, which is dissolved in water and sufficiently dissolved in the gas through the water discharge hole 91, can be discharged into the water tank.

When a gas that does not dissolve in the water flowing down the stretching cylinder 8 remains, the remaining gas separates from the water and rises, and the inner cylinder 71 of the lower swivel body 7, the upper swivel body. Since it returns to the inside of the stirring chamber 58 through the inner cylinder 61 of No. 6 and the hole 56 of the lower wall 57 of the stirring chamber 58 provided in the connecting body 5, the remaining gas can be effectively used.

In this invention, CO ₂ is used as a gas when algae are cultivated in an aquarium, and O ₂ or O ₃ or O ₂ in the air is used as gas when a fish is cultivated. The gas dissolving device may be operated intermittently so as to be operated at a proper time for a required time, or may be continuously operated.

[0030]

[Effect of device]

 As described above, in the aquaculture gas dissolving device according to the first aspect of the present invention, when the dissolving device is installed in the aquaculture water tank and the electric motor of the dissolving mechanism is driven to rotate the impeller in the stirring chamber, The impeller sucks the water in the water tank from the water inlet into the stirring chamber and sends it from the stirring chamber to the starting end opening of the fluid swirling member through the communication port, and the gas that dissolves in water such as carbon dioxide and oxygen. Is supplied into the stirring chamber from the outside of the dissolution apparatus by an inlet pipe, and the function of stirring and mixing the gas and water in the stirring chamber is performed at the same time.

Then, a part of the gas comes into contact with the water by stirring and mixing the water and the gas with the impeller, and the remaining part of the gas is mixed with the water from the communication port to the starting end opening of the fluid swirling member. Send out. Next, the sent mixture of water and gas passes through the spiral water passage provided in the fluid swirl member and reaches the end opening of this passage, and the spiral water passage is smaller than the straight passage. Since the mixture is long, the passage time of the mixture is long, and the mixture swirls strongly so that the gas is sufficiently dissolved in the water.

Further, water in which gas is dissolved enters the upper end of the stretching cylinder from the terminal opening of the spiral water passage, and flows down in the stretching cylinder until it reaches the bottom lid provided at the lower end of the stretching cylinder, and in the meantime. The remaining gas dissolves in the water, and the water in which the gas is sufficiently dissolved can be sent out into the water tank from the water outlet, and it is extremely unlikely to waste carbon dioxide and oxygen gas lost to the atmosphere. It can be used by efficiently dissolving it in a large amount in water.

Further, in addition to the effect of the above-mentioned dissolving device according to the invention of claim 1, the aquaculture gas dissolving device according to the invention of claim 4 has the effect of removing undissolved water contained in water in the drawing cylinder. The gas separates from the water and rises without being sent to the water tank, and returns to the center of the stirring chamber from the hole provided in the lower wall of the stirring chamber through the inner cylinder provided in the center of the fluid swirling member. By rotating, the water in the stirring chamber can be stirred and mixed, and the waste of gas can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a gas dissolving device for aquaculture according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the gas dissolving device for aquaculture of FIG.

FIG. 3 is a vertical cross-sectional view showing an upper lid of the aquaculture gas dissolving apparatus of FIG.

FIG. 4 is a vertical cross-sectional view showing the main body of the dissolution mechanism of the gas dissolution apparatus for aquaculture shown in FIG.

FIG. 5 is a vertical cross-sectional view showing a connected body of the aquaculture gas dissolving apparatus of FIG.

FIG. 6 is a vertical cross-sectional view showing an upper turning member of the gas-dissolving device for aquaculture shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper lid 11 Inlet port 12 Electric wire insertion port 2 Face plate 21 Projection part 22 Slot 23 Adjustment knob 3 Filtering member 4 Dissolving device main body 40a Front wall 40b Bottom wall 40c Peripheral wall body 41 Electric motor 42 Intake pipe 43 Impeller storage space 45 Water inlet 46 guide groove 47 impeller 48 hook-like protrusion 49 tubular body 5 connecting body 51 peripheral wall of stirring chamber 52 arcuate edge 53 notch 54 communication port 54a communication hole 54b communication channel 56 hole 57 lower wall 58 stirring chamber 6 upper revolving body 61 upper Inner cylinder 62 Spiral cover plate 63 End plate 64 Intermediate cylinder 65 Starting end opening 7 Lower revolving structure 71 Lower inner cylinder 72 Spiral plate 73 Separation plate 74 Outer cylinder 75 End opening 76 Spiral water passage 8 Extending cylinder 9 Bottom lid 91 Water outlet 10 Adsorption board 101 Melting mechanism 102 Fluid swirl member 103 Stretching member

Claims (5)

[Scope of utility model registration request] 1. An aquaculture gas dissolving device comprising a dissolving mechanism, a fluid swirling member, and a stretching member and provided in an aquaculture tank, wherein the dissolving mechanism includes an impeller rotated by an electric motor in a stirring chamber. With the provision of a water inlet for supplying water in the water tank to the upper portion of the stirring chamber by rotation of the impeller and an inlet pipe for feeding a gas dissolved in water to the upper portion of the stirring chamber from the outside of the device, the stirring chamber is provided. A communication port is formed on the outer peripheral side of the lower portion, a spiral water passage is formed in the outer cylinder of the fluid swirl member, and a starting end opening of the water passage is connected to the communication port, and the extension member has an upper end. Is provided with an extension tube connected to an end opening of the water passage, and a bottom cover provided at a lower end portion of the extension tube is provided with a water outlet communicating with the inside of the water tank. 2. The melting mechanism is provided with an electric motor in a box-shaped melting mechanism main body having an open top surface, an upper lid is fixed on the main body, and the upper lid is fixed to the bottom wall of the main body. A face plate located outside the front wall and a filtering member are provided, and a slot provided in the face plate and a water inlet provided at a lower portion of the front wall of the main body are communicated with each other through the filtering member, and opened on the upper surface of the upper lid. A vertical axis air inlet pipe provided in the main body is connected to the air inlet, and an impeller accommodating space that forms an upper part of the stirring chamber is provided below the bottom wall of the main body, and an impeller rotated by the electric motor is accommodated in this space. At the same time, the water inlet and the air inlet pipe are communicated with each other, a connecting body protruding downward is fixed to the bottom wall, and a stirring chamber is provided in the connecting body. . 3. The connecting body detachably fixes the peripheral wall of the stirring chamber to the bottom wall of the dissolution mechanism main body, and bulges to the communication hole formed in the outer peripheral portion of the lower wall of the stirring chamber and the lower peripheral side of the peripheral wall. The communication port is formed by a communication passage.
Gas dissolving device for aquaculture. 4. The fluid swirling member has an inner cylinder that coaxially penetrates through an outer cylinder of a vertical axis, forms a spiral water passage between the inner cylinder and the outer cylinder, and The upper end of the inner cylinder is communicated with the stirring chamber through a hole provided in the center of the lower wall of the stirring chamber of the dissolution mechanism, and the lower end of the inner cylinder is communicated with the upper end of the stretching cylinder. , 2 or 3 gas dissolving device for aquaculture. 5. The fluid revolving member is configured by connecting an upper revolving structure and a lower revolving structure, and an intermediate cylinder of the upper revolving structure is fitted to a lower cylinder protruding below a lower wall of the coupling structure, and the intermediate structure is provided. An upper inner cylinder is concentrically provided in the cylinder, a spiral lid plate is formed between the intermediate cylinder and the upper inner cylinder, and the lower part of the intermediate cylinder is fitted and supported on the upper part of the outer cylinder of the lower revolving body. A lower inner cylinder concentrically provided inside is connected to the upper inner cylinder, and a spiral plate is formed between the outer cylinder and the lower inner cylinder to form a spiral water passage between the outer cylinder and the upper and lower inner cylinders. The aquaculture gas dissolving device according to claim 4, wherein the gas dissolving device is formed.