JP2022080247A - Steam separator for water tank and aeration device comprising the same - Google Patents

Abstract

To provide a steam separator for a water tank capable of preventing dispersion of water to inside/outside of a water tank by aeration, and properly circulating water to the inside of the whole water tank, and an aeration device comprising the same.SOLUTION: A steam separator is configured such that: a discharge hole part 43 which derives water and air introduced from an air supply source P to a withdrawal pipe 21 to an inner space part 100 of a housing 10 forming an outer fence, toward a second side wall 12 facing the first side wall 11 is provided on a first side wall 11 of the housing 10; a water discharge hole 50 for making the water derived from the discharge hole part 43 flow outward of the housing 10 is provided on a position near a lower edge of the second side wall 12; an exhaust hole 51 for discharging the air derived from the discharge hole part 43 to outside of the housing 10 is provided on a position near a side wall upper edge of the housing 10; and a water guide plate 13 extending from a lower position of the discharge hole part 43 on the first side wall 11 to a lower position of the water discharge hole 50 on the second side wall 12 is provided on an inner bottom part of the housing 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to a brackish water separator for an aquarium for preventing water scattering caused by aeration in an aquarium for growing ornamental fish and aquatic plants, and an aeration device provided with the aeration separator.

In an aquarium for growing ornamental fish and aquatic plants, a method of performing so-called aeration that maintains the dissolved oxygen content of water by sending air into the water from an externally installed air pump via an air tube to generate bubbles is widely known. ing.

In addition, as an aeration device for the water tank, a pumping pipe installed in the water tank and a filter such as a bottom filter and a sponge filter connected to the lower end of the water tank are provided to perform aeration in the water tank. The ascending flow of water generated when the bubbles rise in the pumping pipe, that is, the so-called airlift type filtration in which the water in the water tank is introduced into the pumping pipe through a filter by the air lift effect and led out from the upper end to the water tank again. The device is known (for example, Patent Documents 1 to 3).

In the filtration devices of Patent Documents 1 and 2, a discharge pipe is continuously provided at the upper end of the pumping pipe, and the water introduced into the pumping pipe as described above has a discharge port provided on the side surface of the discharge pipe. Outflows along the surface of the water with air bubbles. Further, the water flowing out along the water surface is guided to the bottom side along the inner surface of the water tank, and is sucked into the pumping pipe through the filter again. As a result, a circulating flow of water is formed in the entire water tank, so that the water can be efficiently filtered while maintaining an appropriate amount of dissolved oxygen in the water.

In the filtration device of Patent Document 3, a container-shaped filtration chamber with a lid is continuously provided at the upper end of the pumping pipe, and the water introduced into the pumping pipe as described above is introduced from the upper end opening of the pumping pipe. After being introduced into the filtration chamber together with the air bubbles, it is discharged into the water tank from the filtered water discharge hole at the bottom of the filtration chamber through the filter material housed in the filtration chamber. This makes it possible to filter the water in the aquarium more efficiently.

Japanese Unexamined Patent Publication No. 2016-146773 Japanese Patent Application Laid-Open No. 5-168824 JP-A-2005-58201

However, in the filtration devices of Patent Documents 1 and 2, a large amount of air bubbles generated in the pumping pipe are led out from the discharge pipe into the water tank as they are on the water flow, and burst on the water surface to scatter the water. On the surface of the upper frame, the glass surface, and the lighting fixtures installed on the upper part of the aquarium, water stains such as calcium components adhered and accumulated, causing mold to grow.

On the other hand, in the case of the filtration device of Patent Document 3, the bubbles generated in the pumping pipe are once introduced into the filtration chamber together with the water and separated from the water when passing through the filter material, which is caused by the popping of the bubbles. It is considered that the scattering of water inside and outside the aquarium can be suppressed. However, on the other hand, the water introduced into the filtration chamber flows out below the filtered water discharge hole at the bottom of the filtration chamber through the filter material, so that it is difficult for the water to circulate throughout the aquarium and a stagnation portion of water is formed. On the contrary, there was a risk that the water quality would deteriorate.

The present invention has been made in view of the above problems, and is an air-water separator for an aquarium capable of appropriately circulating water throughout the aquarium while preventing water from scattering inside and outside the aquarium due to aeration. , And an aeration device equipped with it.

In order to solve the above problems, the air-water separator for aquarium of the present invention and the aeration device provided with the same have taken the following technical means.

The air-water separator for a water tank of the present invention is connected to the upper end of a pumping pipe erected in the water tank, and is introduced into the pumping pipe by the air sent from the air supply source into the pumping pipe and its air lift effect. An air-water separator for a water tank that separates water to be introduced, and the water and air introduced into the pumping pipe face the first side wall on the first side wall of a housing constituting the outer shell. A discharge port portion that leads to the inside of the housing toward the second side wall side of the housing is provided, and water led out from the discharge port portion is discharged to the outside of the housing at a position near the lower edge of the second side wall. A drain hole for draining water is provided, and an exhaust hole for discharging air led out from the discharge port portion to the outside of the housing is provided at a position near the upper edge of at least one side wall of the housing. The inner bottom portion is characterized in that a water guide plate extending from a position below the discharge port portion on the first side wall to a position below the drain hole on the second side wall is provided. Further, the aeration device of the present invention is characterized in that it is erected in a water tank and includes a pumping pipe into which air is sent from an air supply source and the air-water separator for the water tank.

Preferably, the drainage hole is provided at a position lower than the height of the upper edge of the opening of the discharge port portion on the second side wall.

Preferably, a cover plate that covers the exhaust holes from the outside is juxtaposed on the outside of the side wall of the housing at a predetermined interval.

Preferably, the first side wall is provided with a water absorption hole for allowing water in the water surface area outside the housing to flow into the inner space.

More preferably, a throttle portion is provided in the middle portion of the water flow path from the water absorption hole to the drainage hole, in which the cross-sectional area of the water flow path decreases from the water absorption hole side toward the drainage hole side.

According to the air-water separator for aquarium of the present invention and the aeration device provided therein, the water led out from the pumping pipe to the inside of the housing through the discharge port by the air lift effect flows down onto the water guide plate at the bottom of the housing. After that, it is guided to the lead-out direction along the water guide plate as it is, that is, to the second side wall side, and flows out to the outside of the housing through the drain hole of the second side wall, so that an appropriate circulating water flow can be formed in the entire water tank. can. On the other hand, the air bubbles that are led out from the discharge port together with the water into the housing float up to the water surface side of the flowing water when flowing down onto the water guide plate, burst while flowing to the second side wall side, and disappear inside the housing. do. As a result, it is possible to prevent water from splashing into and out of the aquarium due to the popping of bubbles on the water surface.

It is a figure which shows the installation state of the aeration apparatus provided with the brackish water separator for aquarium of 1st Embodiment. It is a partial cross-sectional perspective schematic view of the steam separator for aquarium of 1st Embodiment. It is a side view vertical cross-sectional schematic diagram of the steam separator for aquarium of 1st Embodiment. It is a front view vertical sectional schematic view of the steam separator for aquarium of 1st Embodiment. It is a side view vertical cross-sectional schematic diagram of the steam separator for aquarium of 2nd Embodiment. It is a partial cross-sectional perspective schematic view of the steam separator for a water tank of 2nd Embodiment. It is a rear perspective schematic view of the steam separator for aquarium of 2nd Embodiment. FIG. 3 is a schematic cross-sectional view of the brackish water separator for a water tank of the second embodiment in a downward view.

Hereinafter, the air-water separator for an aquarium according to the embodiment of the present invention and the aeration device including the aeration device will be described with reference to the drawings. It should be noted that the embodiments described below are examples that embody the present invention, and the specific examples do not limit the configuration of the present invention.

[First Embodiment]
As shown in FIG. 1, in the aeration device 2 of the first embodiment, a filter 23 such as a bottom filter or a sponge filter is provided at the lower end of the pumping pipe 21 erected in the water tank 3, and the filter 23 is provided in the pumping pipe 21. It is an air lift type filtration device that circulates the water in the water tank 3 through the filter 23 by generating air bubbles.

More specifically, the aeration device (hereinafter referred to as "filtration device") 2 is connected to a pumping pipe 21 installed inside the water tank 3 and a connecting pipe 22 connected to the lower end of the pumping pipe 21. A filter (sponge filter in this embodiment) 23 connected to the lower end of the pipe 22 and a discharge pipe 24 and a water tank separator 1 connected to the upper end of the pumping pipe 21 are provided. There is. The pumping pipe 21 is supported and fixed to the inner wall surface of the water tank 3 by a single or a plurality of suction cups (not shown).

The pumping pipe 21 is a pipe body having an inner / outer double structure composed of an outer pipe 21A and an inner pipe 21B, and is configured to expand and contract by sliding both pipes 21A and 21B up and down. In the present embodiment, the outer pipe 21A constitutes the lower portion of the pumping pipe 21, the inner pipe 21B constitutes the upper portion of the pumping pipe 21, and the connecting pipe 22 is continuously provided at the lower end of the outer pipe 21A. A discharge pipe 24 and an air-water separator 1 for a water tank are connected to the upper end of 21B. The outer diameter of the inner pipe 21B is formed to be substantially the same as the inner diameter of the outer pipe 21A. Therefore, when both pipes 21A and 21B are slid up and down, the inner pipe 21B is held inside the outer pipe 21A by the contact friction force between the overlapping surfaces of both pipes 21A and 21B.

The outer pipe 21A is connected to the upper end of the connecting pipe 22, and a suction port 41 that bends downward in a substantially L shape is provided at the lower end. The filter 23 is annularly mounted on the outer periphery of the suction port portion 41 on the tip end side. Although not shown, a large number of water passage holes are formed on the peripheral surface of the suction port portion 41, and the water in the water tank 3 that has passed through the filter 23 is introduced into the connecting pipe 22 through the water passage holes. Will be done.

A tube connection port 42 to which the air tube 25 can be connected is provided on the side surface of the connecting pipe 22, and is installed outside the water tank 3 as an air supply source for sending air into the pumping pipe 21. The air pump P is connected to the tube connection port 42 via the air tube 25. Although not shown, an air outlet hole connected to the tip opening of the tube connection port 42 is provided on the inner peripheral surface of the connecting pipe 22, and is supplied from the air pump P to the tip opening of the tube connection port 42 through the air tube 25. The air to be generated is discharged into the connecting pipe 22 as small bubbles from the air outlet hole.

Further, the air (air bubbles) released into the connecting pipe 22 rises in the internal space of the pumping pipe 21 to generate an ascending flow of water. Then, due to this air lift effect, the water in the water tank 3 is sucked into the connecting pipe 22 through the filter 23. Further, the water sucked into the connecting pipe 22 rises in the pumping pipe 21 together with the bubbles and is guided to the discharge pipe 24. As a result, the water in the aquarium 3 is filtered. Further, by performing aeration in the pumping pipe 12 as described above, the amount of dissolved oxygen in the water in the water tank 3 is also appropriately maintained.

The discharge pipe 24 is a pipe body bent in a substantially inverted L shape, and the upper end portion of the inner pipe 21B of the pumping pipe 21 is connected to the lower end portion thereof. The side end portion (hereinafter referred to as “discharge port portion”) 43 of the discharge pipe 24 is formed to extend substantially horizontally from the upper side surface of the discharge pipe 24 toward the side, and is formed as an outer shell of the water tank separator 1. It is inserted into the housing 10 constituting the housing 10 from the outside rear thereof.

The tip opening 430 of the discharge port 43 is arranged in the inner space (hereinafter referred to as “separation chamber”) 100 of the housing 10, and the water and air guided to the discharge pipe 24 as described above are discharged. It is led out into the separation chamber 100 from the tip opening 430 of the outlet portion 43.

As shown in FIGS. 2 to 4, the water tank separator 1 includes a substantially rectangular box-shaped housing 10 and a support plate portion 40 that supports the housing 10 on the pumping pipe 21. The inner pipe 21B of the pumping pipe 21 is inserted into the pipe insertion hole 400 formed in the plate portion 40, and the pipe connection hole is formed in the rear wall of the housing 10 (hereinafter referred to as “rear wall of the housing”) 11. By inserting the discharge port 43 of the discharge pipe 24 into the 110, it is continuously supported at the upper end of the pumping pipe 21.

In the present embodiment, the extension direction of the discharge port 43 is the front-rear direction of the housing 10, the direction horizontally orthogonal to the extension direction is the left-right direction of the housing 10, and the direction perpendicular to the extension direction is the casing. The vertical direction of the body 10.

The upper edge of the rear wall 11 of the housing extends substantially horizontally forward from the front end of the discharge port 43 inserted into the pipe connection hole 110, and the eaves plate 111 covers the tip opening 430 of the discharge port 43 from above. Is provided. At the leading edge of the eaves plate 111, an eaves front wall 112 that stands up substantially vertically is provided. Since the eaves plate 111 is provided above the tip opening 430 as described above, when water is led out together with air bubbles from the discharge port 43, the water is scattered from the vicinity of the tip opening 430 to the upper side thereof. Can be suppressed.

The pipe connection hole 110 of the rear wall 11 of the housing is provided at a substantially central position between the upper, lower, left and right sides of the separation chamber 100. That is, the tip opening 430 of the discharge port portion 43 is arranged at a substantially central position between the upper, lower, left and right sides of the separation chamber 100.

The front wall (hereinafter referred to as “the front wall of the housing”) 12 as the second side wall of the housing 10 is erected facing the front of the rear wall 11 of the housing as the first side wall. At a position below the center between the upper and lower sides of the front wall 12 of the housing, a plurality of long vertical slits are used as drainage holes for draining water led out from the discharge port 43 into the separation chamber 100 to the outside of the housing 10. A width linear slit (hereinafter referred to as “drainage slit”) 50 is opened. That is, the drainage slit 50 is arranged at a height below the center between the upper and lower sides of the tip opening 430 of the discharge port 43, that is, below the upper edge of the tip opening 430.

The drainage slits 50 are arranged side by side at substantially equal intervals on the left and right sides of the front wall 12 of the housing. Further, the drainage slit 50 is formed in the lower half region of the front wall 12 of the housing, and the lower end thereof is a position that substantially coincides with the bottom wall (hereinafter, referred to as “bottom wall of the housing”) 13 of the housing 10. It is arranged in. Therefore, the water led out from the discharge port 43 into the separation chamber 100 smoothly flows out to the outside of the housing 10 through the drainage slit 50.

The brackish water separator 1 for a water tank of the present embodiment is installed and used at a height at which the drainage slit 50 is completely submerged in water and a space is defined in substantially the upper half of the separation chamber 100. It is designed with this in mind (see Figures 1 to 3). By installing in this way, air bubbles remaining in the water led out in the separation chamber 100 may flow out to the outside through the drain slit 50, or the internal pressure of the separation chamber 100 may rise too much and the air bubbles may greatly swell. It is possible to effectively prevent the water from overflowing from the exhaust slit 51 to the outside. Further, by setting the steam separator 1 for the water tank to the above-mentioned height position, the water flowing out from the drain slit 50 to the outside of the housing 10 is one of the water tanks 3 along the water surface WL in the water tank 3. Since it flows to the inner wall surface side, the circulation of water to the entire water tank 3 is promoted. The installation height of the steam separator 1 for the water tank can be adjusted by expanding and contracting the pumping pipe 21 up and down.

At a position near the upper edge of the front wall 12 of the housing, one long left and right as an exhaust hole for discharging the air led out from the discharge port 43 into the separation chamber 100 of the housing 10 to the outside of the housing 10. A narrow linear slit (hereinafter referred to as “exhaust slit”) 51 is provided. The exhaust slit 51 extends over substantially the entire area between the left and right sides of the front wall 12 of the housing.

The exhaust slit 51 is similarly provided on the left and right side walls (hereinafter referred to as “housing side wall”) 14 of the housing 10 and the eaves front wall 112 provided on the front upper portion of the housing rear wall 11. The exhaust slit 51 of the housing side wall 14 extends over substantially the entire area between the front and rear of the housing side wall 14, and the exhaust slit 51 of the eaves front wall 112 extends over substantially the entire area between the left and right sides of the eaves front wall 112. It has been extended. All of these exhaust slits 51, including the exhaust slits 51 of the housing front wall 12, are provided at the same height position. That is, the exhaust slit 51 is arranged above the tip opening 430 of the discharge port portion 43 and so as to surround the upper region of the separation chamber 100 over the entire circumference.

The housing bottom wall 13 extends substantially horizontally from the position below the pipe connection hole 110 on the housing rear wall 11, that is, the position below the discharge port 43 to the position below the drainage slit 50 on the housing front wall 12. It is formed out. Therefore, the water led out from the discharge port 43 into the housing 10 is smoothly guided to the drainage slit 50 along the upper surface portion of the housing bottom wall 13. That is, the housing bottom wall 13 constituting the inner bottom portion of the housing 10 serves as a water guide plate that guides the water led out from the discharge port portion 43 into the housing 10 to the drainage slit 50. The support plate portion 40 connected to the pumping pipe 21 is formed to extend from the trailing edge portion of the housing bottom wall 13 toward the rear of the housing 10.

The leading edge portion of the housing bottom wall 13 is formed to extend substantially horizontally from the outer surface of the housing front wall 12 to the outside, and extends toward the outside front of the housing 10 at a position below the drainage slit 50. It forms a plate body (hereinafter referred to as "front end plate") 113 to be discharged. Similarly, the front edges of the left and right housing side walls 14 are formed to extend substantially horizontally from the outer surface of the housing front wall 12, and the plate body stands up at the left and right positions of the front end plate 113 (hereinafter referred to as “the plate body”). It forms 114) (referred to as "side end plate"). Therefore, the water flowing out from the separation chamber 100 through the drainage slit 50 is smoothly guided to the front of the housing 10 along the front end plate 113 and the side end plate 114.

The upper wall of the housing 10 (hereinafter referred to as “the upper wall of the housing”) 15 is provided so as to face the upper side of the bottom wall 13 of the housing, and covers the upper area of the separation chamber 100 from above. The peripheral edge of the housing upper wall 15 is formed so as to extend to the outside from the eaves front wall 112, the housing front wall 12, and the housing side wall 14, and the peripheral edges thereof are formed on the side walls 112, 12, and 14, respectively. The exhaust slit 51 provided is provided with a strip-shaped cover plate 115 facing the exhaust slit 51 with a predetermined interval S from the outer peripheral side. Therefore, the air discharged from the inside of the separation chamber 100 through each exhaust slit 51 is discharged to the outside of the housing 10 through the gap S inside the cover plate 115.

As described above, according to the filtration device 2 provided with the air-water separator 1 for the water tank of the present embodiment, the water led out from the pumping pipe 21 into the separation chamber 100 of the housing 10 through the discharge port 43 is a casing. After flowing down onto the body bottom wall 13, it is guided as it is along the upper surface of the housing bottom wall 13 in the lead-out direction, that is, toward the housing front wall 12, and is provided at a position near the lower edge of the housing front wall 12. Since the water is discharged to the outside of the housing 10 through the drainage slit 50, it is possible to form an appropriate circulating water flow in the entire water tank 3. As a result, water can be efficiently filtered while maintaining an appropriate amount of dissolved oxygen in the water.

On the other hand, the air bubbles led out from the discharge port 43 together with the water into the separation chamber 100 rise to the water surface side of the flowing water when flowing down onto the housing bottom wall 13, and until they reach the housing front wall 12. Or, when it reaches the front wall 12 of the housing, it pops and disappears in the separation chamber 100. As a result, it is possible to reliably prevent water from splashing into and out of the water tank 3. Therefore, even if aeration is performed as described above, the inside and outside of the water tank 3 are not easily soiled.

Moreover, as described above, if the drainage slit 50 is completely submerged in water and the air-water separator 1 for a water tank is installed at a height at which a space is defined in substantially the upper half of the separation chamber 100. The air bubbles that flow on the water surface WL in the separation chamber 100 and reach the housing front wall 12 are blocked at the position above the drainage slit 50 in the housing front wall 12 to prevent the outflow to the outside of the housing 10. To. Therefore, it is possible to more reliably prevent water from scattering into and out of the water tank 3 due to the popping of bubbles. In the case of the water tank air-water separator 1 of the present embodiment, since the drainage slit 50 is formed in a narrow linear shape that is long in the vertical direction, even if the water level in the water tank 3 is lowered, the water tank air-water separator 1 is formed. Even if a part (upper end) of the drainage slit 50 is exposed above the water surface WL by setting the installation height of the housing, the air bubbles that reach the front wall 12 of the housing are on the peripheral edge of the drainage slit 50. It is adsorbed and the outflow to the outside of the housing 10 is hindered.

Further, in this case, since the drainage slit 50 is arranged at a height lower than the center between the upper and lower parts of the tip opening 430 of the discharge port portion 43, the water surface WL is substantially the center between the upper and lower parts of the tip opening 30. By adjusting the installation height of the air-water separator 1 for the water tank so as to be at the height position of, the drainage slit 50 is completely submerged in water, and a space is defined in the substantially upper half area of the separation chamber 100. It is possible to put it in a state.

Further, in this case, a cover plate covering the exhaust slit 51 from the outside with a predetermined interval S on the outside of each side wall of the eaves front wall 112, the housing front wall 12, and the housing side wall 14 of the housing 10. Since the 115s are arranged side by side, when the internal pressure of the separation chamber 100 rises and air bubbles burst in the vicinity of the exhaust slit 51, water directly scatters to the outside of the housing 10 through the exhaust slit 51. It can be surely prevented.

By the way, in a water tank for growing ornamental fish and aquatic plants, the excrement of living organisms and oil components contained in food may condense on the surface of the water to form an oil film. It causes inhibition of the activity of aerobic bacteria that contribute to the decomposition of ammonia and nitrite. Therefore, it is desirable to circulate water throughout the water tank to improve the filtration efficiency so that an oil film is not formed on the water surface as much as possible. However, even so, when an oil film is formed on the water surface, the oil film floating on the water surface is not sufficiently decomposed only by the circulating water flow in the water tank.

[Second Embodiment]
Therefore, as shown in FIGS. 5 to 8, in the water tank air separator 6 of the second embodiment, water absorption holes 52 and 53 are provided in the housing rear wall 61 as the first side wall of the housing 60, and the water tank is provided. By allowing water in the water surface WL region in 3 to flow into the inner space (separation chamber) 600 of the housing 60 from the water absorption holes 52 and 53, the oil film formed on the water surface WL is agitated in the housing 60 and decomposed. I try to do it.

More specifically, the steam separator 6 for a water tank of the present embodiment has a substantially rectangular box-shaped housing 60 and a housing 60.
A support frame portion 80 for supporting the discharge pipe 24 at the upper end of the pumping pipe 21 is provided, and the water tank air / water separator 6, the discharge pipe 24, the pumping pipe 21, the connecting pipe 22, and the filter 23 are provided. This constitutes an air lift type filtration device 7 similar to the filtration device 2 of the first embodiment.

In the filtration device 7 of the present embodiment, the air pipe 26 is inserted into the pumping pipe 21, and the air tube 25 is connected to the upper end portion of the air pipe 26. Further, although not shown, an air stone is continuously provided at the lower end of the air pipe 26. Therefore, the air supplied from the air pump P to the upper end of the air pipe 26 through the air tube 25 is discharged into the pumping pipe 21 as small bubbles from the plurality of air holes on the surface of the air stone. As a result, as in the filtration device 2 of the first embodiment, the water in the water tank 3 is circulated and filtered through the filter 23, and the amount of dissolved oxygen in the water is appropriately maintained by aeration.

The discharge pipe 24 is a pipe body bent in a substantially inverted L shape, and the pumping pipe 21 is connected to the lower end portion thereof. The discharge port 43 of the discharge pipe 24 of the present embodiment is formed in a substantially rectangular tubular shape in cross section, and is inserted into the rear opening 800 of the support frame 80 from the outside rear. Further, a small-diameter connecting hole 44 is formed through the upper portion of the discharge pipe 24, and the upper end portion of the air pipe 26, which is the connection port portion of the air tube 25, protrudes to the upper portion of the discharge port portion 43 through the connecting hole 44. Has been done. Therefore, in the present embodiment, the connecting pipe 22 may not be provided with the tube connecting port 42 or the air outlet hole.

In the present embodiment, the extension direction of the discharge port 43 is the front-rear direction of the housing 60, the direction horizontally orthogonal to the extension direction is the left-right direction of the housing 60, and the direction perpendicular to the extension direction is the casing. The vertical direction of the body 60.

The support frame portion 80 is formed in a substantially rectangular cylinder shape that is open in the front-rear direction and whose left-right width dimension is smaller than the left-right width dimension of the housing 60, and the discharge port portion 43 of the discharge pipe 24 is formed by the frame portion upper plate 81. , The frame portion lower plate 83, and the left and right frame portion side plates 84 hold the frame portion so as to be sandwiched from the top, bottom, left, and right.

The support frame portion 80 is continuously provided at a substantially central position between the upper, lower, left and right sides of the rear wall 61 of the housing. Therefore, the tip opening 430 of the discharge port portion 43 inserted into the rear opening 800 of the support frame portion 80 is arranged at a substantially central position between the upper, lower, left and right sides of the separation chamber 600.

The frame portion upper plate 81 is provided with a through hole 85 having a small diameter facing the connecting hole 44, and the upper end portion of the air pipe 26 projecting from the upper portion of the discharge port portion 43 is formed in the through hole 85. It is inserted and protrudes above the support frame portion 80.

The front end portion of the frame portion upper plate 81 is connected and supported along the lower edge portion of the upper wall surface portion (hereinafter, referred to as “housing upper rear wall”) 611 of the housing rear wall 61. On the other hand, in the frame portion lower plate 83, the central portion between the front and rear portions is connected and supported along the upper edge portion of the lower wall surface portion (hereinafter referred to as “housing lower rear wall”) 612 of the housing rear wall 61.

The frame portion upper plate 81 is formed to extend substantially horizontally forward from the front end of the discharge port portion 43 inserted into the rear opening 800, and covers the tip opening 430 of the discharge port portion 43 from above. As a result, when water is led out from the discharge port 43 into the separation chamber 600, it is possible to suppress the water from scattering from the vicinity of the tip opening 430 to the upper side thereof.

The front plate portion 830 of the frame portion lower plate 83 is formed so as to extend diagonally downward from the upper edge of the lower rear wall 612 of the housing toward the lower region of the separation chamber 600. As a result, the water drawn out from the tip opening 430 of the discharge port portion 43 is guided to the front of the upper surface of the housing bottom wall 63 along the upper surface of the front plate portion (hereinafter referred to as “inclined plate”) 830.

The housing upper rear wall 611 is erected at a position slightly forward of the trailing edge portion of the housing upper wall 65. On the other hand, the lower rear wall 612 of the housing is erected along the trailing edge of the bottom wall 63 of the housing. As described above, the lower rear wall 612 of the housing is arranged at a position offset rearward from the upper rear wall 611 of the housing. Further, the lower rear wall 612 of the housing is formed to be smaller than the left and right width of the housing 60, and extends between the left and right frame portion side plates 84. In the present embodiment, the housing rear wall 61 as the first side wall includes not only the housing upper rear wall 611 and the housing lower rear wall 612, but also the rear end faces of the left and right housing side walls 64, and behind them. A virtual plane (a surface on which the water absorption hole 53 described later is formed) whose end surface is horizontally extended toward the frame portion side plate 84 is also included.

The front wall 62 of the housing as the second side wall of the housing 60 is discharged at a height below the tip opening 430 of the discharge port 43, that is, below the center between the upper and lower sides of the front wall 62 of the housing. A plurality of narrow linear drainage slits 50 that are long in the vertical direction are provided as drainage holes for draining the water led out from the outlet portion 43 into the separation chamber 600 to the outside of the housing 60.

The drainage slits 50 are arranged side by side at substantially equal intervals on the left and right sides of the front wall 62 of the housing. Further, the lower end of the drainage slit 50 substantially coincides with the bottom wall 63 of the housing, and the upper end thereof is below the lower edge of the tip opening 430 of the discharge port portion 43, more specifically, the height of the front end of the inclined plate 830. It is formed to match the length.

The housing bottom wall 63 passes below the inclined plate 830 from the lower end of the housing lower rear wall 612, and is formed to extend substantially horizontally toward the lower end of the housing front wall 62, that is, the lower position of the drainage slit 50. ing. Therefore, the water led out from the discharge port 43 into the separation chamber 600 flows forward along the upper surface of the inclined plate 830, and is smoothly guided to the drainage slit 50 along the upper surface of the housing bottom wall 63. .. That is, the housing bottom wall 63 constituting the inner bottom portion of the housing 60 serves as a water guide plate that guides the water led out from the discharge port 43 into the housing 60 to the drainage slit 50.

Both the front edges of the housing bottom wall 63 and the left and right housing side walls 64 are formed to extend substantially horizontally from the outer surface of the housing front wall 62, as in the filtration device 2 of the first embodiment. A front end plate 613 and a side end plate 614 are formed on the outside of the drainage slit 50. Therefore, the water flowing out from the separation chamber 600 through the drainage slit 50 is smoothly guided to the front of the housing 60 along the front end plate 613 and the side end plate 614.

In the upper rear wall 611 of the housing, one narrow linear exhaust slit 51 long to the left and right is used as an exhaust hole for discharging the air led out from the discharge port 43 into the separation chamber 600 to the outside of the housing 60. Has been opened. The exhaust slit 51 extends over substantially the entire area between the left and right sides of the upper rear wall 611 of the housing.

Similarly, one narrow linear exhaust slit 51 long to the left and right is provided at a position facing the front of the exhaust slit 51 on the front wall 62 of the housing. The exhaust slit 51 extends over substantially the entire area between the left and right sides at a position near the upper edge of the front wall 62 of the housing.

As described above, in the present embodiment, the exhaust slit 51 is provided at the front and rear positions in the upper region of the separation chamber 600 above the tip opening 430 of the discharge port portion 43. A strip-shaped cover plate 615 facing the exhaust slit 51 with a predetermined distance S from the outside is erected on the trailing edge portion and the front edge portion of the upper wall 65 of the housing, respectively, and the separation chamber 600 is provided. The air discharged from the inside through each exhaust slit 51 is discharged to the outside of the housing 60 through the gap S inside the cover plate 615.

The lower rear wall 612 of the housing has a plurality of narrow linear slits (hereinafter, "first water absorption slits") that are long in the vertical direction as water absorption holes for allowing water in the water surface WL region in the water tank 3 to flow into the separation chamber 600. 52) has been established. Water in the water surface WL region in the water tank 3 also flows into the separation chamber 600 between the trailing edge portion of the housing side wall 64 and the left and right side plates (hereinafter referred to as “frame portion side plates”) 84 of the support frame portion 80. As a water absorption hole, a narrow linear gap (hereinafter referred to as “second water absorption slit”) 53 that is long in the vertical direction is provided.

The first water absorption slits 52 are arranged side by side at substantially equal intervals on the left and right sides in substantially the entire area between the left and right sides of the lower rear wall 612 of the housing. Further, the first water absorption slit 52 is formed to have a length such that the lower end substantially coincides with the housing bottom wall 63 and the upper end substantially coincides with the upper edge of the housing lower rear wall 612.

The second water absorption slit 53 is formed along the trailing edge of the housing side wall 64 to a length extending from the upper surface of the housing bottom wall 63 to the height of the upper surface of the frame portion upper plate 81. Therefore, even if the water surface WL is set at a height position above the upper edge of the lower rear wall 612 of the housing and the first water absorption slit 52 is submerged in water, the second water absorption slit 53 is at least at the upper end thereof. A part can be exposed on the water surface WL.

Further, as described above, since the water absorption slits 52 and 53 are provided in the rear wall 61 of the housing, the water introduced into the separation chamber 600 from the discharge port 43 is drained along the bottom wall 63 of the housing. Due to the draft force when flowing to the slit 50 side (downstream side), the water in the water surface WL region in the water tank 3 is sucked into the separation chamber 600 through the water absorption slits 52 and 53. Therefore, when the oil film is suspended on the water surface WL, the oil film is also sucked into the separation chamber 600 together with the water. Then, the oil film sucked into the separation chamber 600 is agitated by water and air bubbles flowing down from the discharge port 43 along the inclined plate 830 onto the bottom wall 63 of the housing, and is decomposed into fine particles. Further, the oil component atomized in the housing 60 as described above flows out of the housing 60 together with the water through the drainage slit 50, and while circulating in the water tank 3, is filtered in water, in the soil, or in the soil. It is efficiently decomposed and removed by the bacteria inside.

The inclined plate 830 of the frame portion lower plate 83 extends diagonally downward from the upper position of the first water absorption slit 52 toward the lower region of the separation chamber 600, and is a gap between the inclined plate 830 and the housing bottom wall 63. The vertical width is gradually narrowed from the first water absorption slit 52 side toward the drainage slit 50 side. That is, the inclined plate 830 has a flow of water from the upstream side (first water absorption slit 52 side) to the downstream side (drainage slit 50 side) in the middle portion of the water flow path from the first water absorption slit 52 to the drainage slit 50. A slit portion 602 having a small road cross-sectional area is defined. When the water sucked from the first water absorption slit 52 flows to the drainage slit 50 side by the throttle portion 602, the pressure difference between the space on the first water absorption slit 52 side and the space on the drainage slit 50 side is increased. Since the draft force is increased, the water in the water surface WL region is more reliably sucked into the separation chamber 600 from the first water absorption slit 52.

An inclined surface portion 66 projecting diagonally forward from the inner side surface of the housing side wall 64 toward the frame portion side plate 84 is formed at a position facing the frame side plate 84 on the inner side surface of the housing side wall 64, and is inclined. The left-right width of the gap between the surface portion 66 and the frame portion side plate 84 is gradually narrowed from the second water absorption slit 53 side toward the drainage slit 50 side. That is, the inclined surface portion 66 has a flow of water from the upstream side (second water absorption slit 53 side) to the downstream side (drainage slit 50 side) in the middle portion of the water flow path from the second water absorption slit 53 to the drainage slit 50. The slit portion 603 in which the road cross-sectional area is reduced is defined. When the water sucked from the second water absorption slit 53 flows to the drainage slit 50 side by the throttle portion 603, the pressure difference between the space on the second water absorption slit 53 side and the space on the drainage slit 50 side is increased. Since the draft force is increased, the water in the water surface WL region is more reliably sucked into the separation chamber 600 from the second water absorption slit 53.

In the water tank air / water separator 6 of the present embodiment, the drainage slit 50 is completely submerged in water, and a part of the upper end side of the first water absorption slit 52 is exposed above the water surface WL, that is, the water surface WL. Is designed to be installed and used at a height above the upper end of the drainage slit 50 and below the upper end of the first water absorption slit 52 (see FIG. 5). By installing in this way, a space is defined in a range of about 3/4 of the upper side of the separation chamber 600, so that air bubbles pass through the drainage slit 50 to the outside as in the water tank air / water separator 1 of the embodiment. It is possible to effectively prevent the water from flowing out to the outside or swelling as the internal pressure of the separation chamber 600 rises and overflowing from the exhaust slit 51 together with water. Further, it is also possible to promote the circulation of water into the entire water tank 3 by the flow of water discharged from the drainage slit 50 toward the inner wall surface side of one of the water tanks 3 along the water surface WL in the water tank 3. The installation height of the steam separator 6 for the water tank can be adjusted by expanding and contracting the pumping pipe 21 up and down.

Moreover, by installing as described above, not only the second water absorption slit 53 but also a part of the upper end side of the first water absorption slit 52 is exposed above the water surface WL, so that the oil film floating on the water surface WL is separated from the separation chamber. It can be sucked into the 600 more reliably.

As described above, according to the filtration device 7 provided with the air-water separator 6 for the aquarium of the present embodiment, as in the filtration device 2 of the first embodiment, the discharge port portion 43 is placed in the separation chamber 600 of the housing 60. Since the derived water flows out from the drainage slit 50 of the housing front wall 62 to the outside of the housing 60 along the upper surface of the housing bottom wall 63, an appropriate circulating water flow is formed in the entire water tank 3. It is possible. Further, the bubbles led out from the discharge port 43 together with the water into the separation chamber 600 are separated from the water when flowing down onto the bottom wall 63 of the housing and disappear in the separation chamber 600, which is caused by the popping of the bubbles. It is also possible to reliably prevent water from splashing into and out of the water tank 3.

Moreover, as described above, the water tank separator 6 is installed at a height at which the drainage slit 50 is completely submerged in water and a space is defined in a range of approximately 3/4 of the upper side of the separation chamber 600. Then, as in the filtration device 2 of the first embodiment, the air bubbles that have reached the front wall 62 of the housing are prevented from flowing out from the drainage slit 50 to the outside of the housing 10, so that the water tank 3 caused by the popping of the air bubbles 3 It is possible to prevent water from splashing inside and outside the room more reliably.

Further, in this case, the cover plate 615 that covers the exhaust slit 51 from the outside is erected along the trailing edge portion and the front edge portion of the housing upper wall 65 at predetermined intervals S, respectively. Similar to the filtration device 2 of the first embodiment, it is possible to reliably prevent water from directly scattering to the outside of the housing 60 through the exhaust slit 51.

Further, in this case, when the oil film is suspended on the water surface WL, the oil film can be sucked into the separation chamber 600 from the water absorption slits 52 and 53 together with the water in the water surface WL region and decomposed in the separation chamber 600. , The amount of dissolved oxygen in the water in the water tank 3 can be maintained more appropriately. Therefore, the water quality is further improved.

Moreover, as described above, if the water tank water separator 6 is installed at a height at which a part of the upper end side of the first water absorption slit 52 is exposed above the water surface WL, only the second water absorption slit 53 is used. However, since the oil film floating on the water surface WL can flow into the separation chamber 600 from the first water absorption slit 52, the oil film can be more reliably decomposed. Further, even if the first water absorption slit 52 is completely submerged in water, the oil film floating on the water surface WL flows into the separation chamber 600 through the second water absorption slit 53 extending above the first water absorption slit 52. Therefore, it is possible to reliably decompose the oil film.

Further, in this case, since the suction force of water from the water absorption slits 52 and 53 is increased by providing the throttle portions 602 and 603 on the downstream side of the water absorption slits 52 and 53, the oil film floating on the water surface WL is separated. It can be more reliably sucked into the chamber 600 and disassembled.

In the first embodiment, an exhaust slit 51 is provided on each side wall of the eaves front wall 112, the housing front wall 12, and the housing side wall 14 of the housing 10, but from the inside of the separation chamber 100. If air is surely discharged to the outside of the housing 10, the exhaust slit 51 is provided only on one of the eaves front wall 112, the housing front wall 12, and the housing side wall 14 of the housing 10. Alternatively, the exhaust slits 51 may be provided on a plurality of predetermined side walls (for example, only the left and right housing side walls 14).

Further, in each of the above embodiments, the housings 10 and 60 and the discharge pipe 24 are configured as separate bodies, but the rear walls 11 and 61 of the housing have a substantially inverted L shape corresponding to the discharge pipe 24. A pipe connection port is integrally formed, and the upper end of the pumping pipe 21 is connected to the lower end of the pipe connection port, and water and air introduced into the pumping pipe 21 are transferred to the side surface of the pipe connection port. It may be configured to be led out from the discharge port portion of the above to the separation chambers 100 and 600. Also in this case, the same action and effect as those of the above-mentioned embodiments are obtained.

Further, in each of the above embodiments, as an aeration device provided with a water tank air / water separators 1 and 6, air lift type filtration devices 2 and 7 having a filter 23 provided at the lower end of the pumping pipe 21 have been described. The water tank separators 1 and 6 can also be used in an aeration device in which a filter such as a bottom filter or a sponge filter is not provided at the lower end of the pumping pipe 21. Similarly, even in the aeration device not provided with the filter function as described above, it is possible to form an appropriate circulating water flow in the entire water tank 3, so that the dissolved oxygen amount of water can be appropriately maintained. In addition, dirt inside and outside the water tank 3 due to aeration can be prevented. Further, in the aeration device provided with the steam separator 6 for the water tank of the second embodiment, it is possible to decompose the oil film floating on the water surface WL, so that the dissolved oxygen amount of the water should be maintained more appropriately. Can be done.

Further, in the first embodiment, as an aeration device provided with an air-water separator 1 for a water tank, an air tube 25 is connected to a tube connection port 42 of the connecting pipe 22, and water is pumped from an air outlet hole (not shown) of the connecting pipe 22. Although the one configured to supply air into the pipe 21 has been described, an air tube 25 is inserted into the pumping pipe 21, an air stone is connected to the tip of the air tube 25, and the pumping pipe is connected to the air stone. It may be configured to supply air into the 21.

1,6 Aquarium steam separator 2,7 Filtration device (aeration device)
3 Water tank 10,60 Housing 11,61 Housing rear wall (first side wall)
12,62 Housing front wall (second side wall)
13,63 Housing bottom wall (water guide plate)
14,64 Housing side wall 15,65 Housing upper wall 21 Pumping pipe 22 Connecting pipe 23 Filter 24 Discharge pipe 43 Discharge port 50 Drainage slit (drainage hole)
51 Exhaust slit (exhaust hole)
52 First water absorption slit (water absorption hole)
53 Second water absorption slit (water absorption hole)
100 Separation room (inner space)
115 Cover plate P Air pump (air supply source)
WL water surface

Claims (6)

Air for the water tank that is connected to the upper end of the pumping pipe erected in the water tank and separates the air sent from the air supply source into the pumping pipe and the water introduced into the pumping pipe by the air lift effect. It ’s a water separator,
On the first side wall of the housing constituting the outer shell, the water and air introduced into the pumping pipe are directed toward the second side wall side of the housing facing the first side wall, and the inner space portion of the housing is provided. A discharge port is provided to lead to
A drainage hole is provided at a position near the lower edge of the second side wall to allow water led out from the discharge port portion to the inner space portion to flow out to the outside of the housing.
An exhaust hole is provided at a position near the upper edge of at least one side wall of the housing to discharge the air led out from the discharge port portion to the inner space portion to the outside of the housing.
An aquarium air-water separator provided with a water guide plate extending from a position below the discharge port on the first side wall to a position below the drain hole on the second side wall on the inner bottom of the housing. .. The air-water separator for an aquarium according to claim 1, wherein the drainage hole is provided at a position below the height of the upper edge of the opening of the discharge port on the second side wall. The air-water separator for an aquarium according to claim 1 or 2, wherein a cover plate that covers the exhaust holes from the outside is juxtaposed on the outside of the side wall of the housing at a predetermined interval. The air-water separator for an aquarium according to any one of claims 1 to 3, wherein the first side wall is provided with a water absorption hole for allowing water in the water surface area outside the housing to flow into the inner space. The fourth aspect of claim 4, wherein a throttle portion is provided in the middle portion of the water flow path from the water absorption hole to the drainage hole, in which the cross-sectional area of the water flow path decreases from the water absorption hole side toward the drainage hole side. Air-water separator for water tank. A pumping pipe that is erected in the water tank and in which air is sent from the air supply source,
An aeration device comprising the air-water separator for an aquarium according to any one of claims 1 to 5.

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