JPS5922307Y2 - air pump for aquarium - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air pump used to supply air to an air supply unit such as an air stone installed in an aquarium for ornamental fish such as goldfish and tropical fish. An exhaust nozzle is provided so that air supply can be controlled independently from one air pump to a plurality of air supplied parts.
The purpose is to provide an air pump for an aquarium that is easy to handle, compact, and low cost, and has the following characteristics:
A large chamber connected to the discharge side of the pump mechanism is formed in the air pump body, and a gutter-like groove is formed on the wall that makes this large chamber nationally prestigious, and on the inner surface of the groove, each of the large chambers has independent grooves. A plurality of exhaust holes are opened at intervals on the same straight line, and a plurality of pairs of bearing brackets are provided on the grooves so as to sandwich each exhaust hole, and a plurality of exhaust holes are communicated with or cut off from each other. The bases of a plurality of exhaust nozzles, each having a ventilation hole, are rotatably supported on the same axis, and a seal is provided between each base and the groove, and each exhaust nozzle is A sealing plate capable of frictionally retaining the rotational position of the exhaust nozzle is interposed, and each tip of the exhaust nozzle is connected to an air supply part such as an air stone in the water tank via a conduit such as a vinyl pipe.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show the first embodiment, P is an air pump,
A pump mechanism section (not shown) is accommodated within the air pump body 1.

A partition plate 2 and a short cylindrical cap 3 are fitted into an opening formed at one end of the air pump body 1, and the cap 3 is fixed to the air pump body 1 by a pair of screws 4.

The partition plate 2 has exhaust passages 5 to 5 on the discharge side of the pump mechanism section.
An inflow hole 8 is formed which communicates with the cap 3 through the cap 3, and the inflow hole 8 opens into a vast chamber 9 located between the upper wall 10 of the cap 3 and the partition plate 2.

A gutter-like groove 11 is formed on the outer surface of the upper wall 10 of the cap 3, and a plurality of exhaust holes 12 (three in the illustrated example) are formed on the bottom surface of the groove 11, each independently communicating with the ampulla 9. are opened at a predetermined interval on the same straight line.

In addition, a pair of bearing brackets 13 are integrally protruded in the groove 11 at positions sandwiching each exhaust hole 12, and each bearing bracket 13 has a bearing hole concentrically with the arc center of the groove 11. 14 is formed.

A communication hole 1 is provided between each pair of bearing brackets 13.
An arcuate sealing plate 16 is fitted as a sealing member made of rubber or the like having a diameter of 5, with its communication hole 15 aligned with the exhaust hole 12, and three exhaust nozzles 17 are installed on both end surfaces of their disc-shaped base 18. A shaft portion 19 protruding from the center is fitted into the bearing holes 14 of the pair of bearing brackets 13 to be rotatably supported.

When each exhaust nozzle 17 is supported by the bearing bracket 13, the base 18 of the exhaust nozzle 17 is supported by the bearing bracket 13 forming the pair.
The shaft portion 19 is fitted into the bearing hole 14 while the both bearing brackets 13 are bent outward using their elasticity, so that the outer circumferential surface of the disc-shaped base 18 is fitted into the seal plate. It is press-deformed and brought into close contact with the concave arc surface of No. 16.

Each exhaust nozzle 17 has a ventilation hole 20 in its axial direction,
When the exhaust nozzle 17 is placed upright, the ventilation hole 20 is completely aligned with the exhaust hole 12, and the amount of air blown from the exhaust nozzle 17 is maximized.

When the exhaust nozzle 17 is rotated left or right from an upright position, the ventilation 7L 20 gradually becomes misaligned with the exhaust hole 12, the amount of air sent from the exhaust nozzle 17 gradually decreases, and the exhaust nozzle 17 is rotated at a predetermined angle. When rotated, the exhaust hole 12 is completely closed by the outer peripheral surface of the base 18 of the exhaust nozzle 17, and the amount of air sent from the exhaust nozzle 17 becomes zero.

Each position of this exhaust nozzle 17 is located between the seal plate 16 and the base 18.
It is held by the frictional force acting between the seal plate 16 and
Thus, the space between the exhaust nozzle 17 and the groove 11 is reliably sealed.

A cover 22 having three elongated holes 21 for allowing rotation of each exhaust nozzle 17 is fixed to the upper wall 10 of the cap 3 with four screws 23.

FIG. 4 shows an example of how the air pump P is used.
The bottom of the water absorption base 2 has numerous inflow holes 25 in the earthen wall.
6 is fixed via a suction cup 39, and the water inlet 27 at one end
The proximal end of the vertically extending water conduit 28 is fitted into this.

An air stone 29 is housed in the base end of the water conduit pipe 28, and the air stone 29 is connected to the intermediate exhaust nozzle 17 via a vinyl pipe 30.

A filter medium 31 is placed on the upper surface of the water absorption base 26, Oiso sand 32 is spread on it, and a water wheel house 33 as a near-late member is installed on the Oiso sand 32.

At the bottom of the water wheel 34, the tip of a vinyl pipe 35 whose base end is connected to the intermediate exhaust nozzle 17 is arranged.

The upper and middle exhaust nozzles 17 are each held in an upright position, and the lower exhaust nozzle 17 is held in an inclined position, so that only the lower exhaust hole 12 is closed.

In the above configuration, when the air pump P is started, air is supplied from the intermediate exhaust nozzle 17 to the water guide pipe 28 via the vinyl pipe 30 and the air stone 29.
The water in the tank 24 is pushed up and the inside tends to absorb water, so the water in the water tank 24 is sucked into the water absorption base 26 through the filter medium 31 and the inflow hole 25, and the water is removed by the filter medium 31. be purified.

The purified water passes through the water absorption base 26 and then returns to the water tank 24 through the water pipe 28.

On the other hand, since air is supplied to the lower part of the water wheel 34 from the upper exhaust nozzle 17 through the vinyl pipe 35, the water wheel 34 rotates at the same time as the near-reduction effect is performed, which can add interest.

Fifth. FIG. 6 shows a second embodiment, in which the seal plate 16 is formed into a plate shape having an arcuate cross section, and a pair of engagement protrusions 37 in the groove 11 are formed in a pair of engagement holes 36 of the seal plate 16. The seal plate 16 is positioned by engaging with each other, and each bearing bracket 13 is integrally provided on the inner surface of the cover 22, and the bearing groove 38 of each bearing bracket 13 and the shaft portion 19 of each exhaust nozzle 17 are aligned with each other. The outer circumferential surface of each base 18 is pressed and deformed to bring it into close contact with the concave arc surface of the seal plate 16.

The other constituent parts are substantially the same as those of the first embodiment, so the same parts are given the same reference numerals.

As described above, according to the present invention, an expansive chamber 9 connected to the discharge side of the pump mechanism is formed in the air pump body 1, and a gutter-like groove 11 is formed in the wall that defines the expansive chamber 9. A plurality of exhaust holes 12 are opened on the same straight line at intervals on the inner surface of the groove 11, each independently communicating with the enlarged chamber 9.
Each base 18 of a plurality of exhaust nozzles 17 each having a ventilation hole 20 that communicates with or is blocked from each of the exhaust holes 12 is coaxially supported between the plurality of pairs of bearing brackets 13 provided above. Furthermore, since each tip of the exhaust nozzle 17 is connected to an air supply part such as the air stone 29 in the water tank 24 via a conduit such as a vinyl pipe 30, 35,
By changing the rotational position of each exhaust nozzle 17 and making the ventilation hole 20 of the same nozzle 17 and the exhaust hole 12 coincide with each other or making them different from each other, the opening area of the ventilation hole 20 and, therefore, the air supply amount of the exhaust nozzle 17 can be adjusted. can be changed continuously, and therefore the supply of air to a plurality of air supplied sections connected to each exhaust nozzle 17 can be independently controlled.

In particular, since the bases 18 of the plurality of exhaust nozzles 17 are supported so that they can rotate on the same axis, even if the exhaust nozzles 17 are arranged close to each other, they will not interfere with each other when rotating them. Therefore, the air pump body 1
can be configured extremely compactly in the arrangement direction of the exhaust nozzles 17, and moreover, it is easy to compare the amount of rotation of each exhaust nozzle 17, and the opening degree of each vent hole 20 can be set appropriately.

Further, since it is possible to simultaneously rotate a plurality of exhaust nozzles 17 by the same amount in the same direction with a finger or the like facing toward the side in the direction in which they are arranged, the ventilation holes 2 of each exhaust nozzle 17 can be rotated by the same amount.
The zero opening degree can be quickly and accurately adjusted to the same amount, improving the efficiency of nozzle opening/closing operations.

Moreover, since the same amount of air discharged from the air pump can be supplied to the plurality of exhaust holes 12 from the expansive chamber 9 having a relatively large capacity, the opening degree of the ventilation holes 20 can be adjusted to exactly the same amount as described above. Coupled with the effect of being able to adjust the destination, it is possible to accurately match the amount of air ejected from each exhaust nozzle 17, and for example, when it is necessary to send air evenly to each air supplied part of a plurality of water tanks 24. It is extremely convenient in such situations.

Furthermore, a seal plate 16 is interposed between the base 18 of the exhaust nozzle 17 and the groove 11 to seal the space therebetween and to frictionally maintain the rotational position of each exhaust nozzle 17. Seal plate 1 that should seal between groove 11
6 can also be used as a friction material for frictionally holding the exhaust nozzle 17 in an appropriate rotational position, and the structure is simple and can contribute to cost reduction.

[Brief explanation of the drawing]

1 to 4 show the first embodiment of the present invention,
Figure 1 is an exploded perspective view, Figure 2 is a front view with main parts cut away,
Fig. 3 is a bottom view with the main parts cut away, Fig. 4 is an explanatory diagram of the state of use, and Fig. 5. FIG. 6 shows a second embodiment of the present invention.
FIG. 5 is an exploded perspective view, and FIG. 6 is a bottom view with main parts cut away. P... Air pump, 1... Air pump body, 9... Vast chamber, 10... Upper wall of cap as wall, 11...・Concave groove, 12...
...Exhaust hole, 13...Bearing bracket, 1
6...Seal plate, 17...Exhaust nozzle, 18...Base, 20...Vent hole, 2
4...Aquarium, 29...Airstone, 3
0゜35・・・vinyl pipe.

Claims (1)

[Scope of utility model registration request] An enlarged chamber 9 connected to the discharge side of the pump mechanism is formed in the air pump body 1, and a gutter-like groove 11 is formed in the wall defining the enlarged chamber 9, and on the inner surface of the groove 11, A plurality of exhaust holes 12 each independently communicating with the enlarged chamber 9 are opened at intervals on the same straight line, and a plurality of bearing brackets are provided on the groove 11 so as to sandwich each exhaust hole 12. 13, each base 18 of a plurality of exhaust nozzles 17, each having a ventilation hole 20 that communicates with or is blocked from each of the exhaust holes 12, is rotatably supported on the same axis, and each base 18 and the groove A seal plate 16 is interposed between the exhaust nozzle 17 and the exhaust nozzle 11 to seal the space therebetween and frictionally maintain the rotational position of each exhaust nozzle 17. An air pump for an aquarium, which is connected to the air supplied part through a conduit such as a vinyl pipe 30 or 35.