JPH0420497Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an underwater agitation device for agitating liquid in an aquarium, for example, a sewage tank, a sedimentation pond, or the like.

[Prior Art] There are cases where it is necessary to stir the liquid in the aquarium. For example, when a liquid contains precipitates and it is necessary to keep the precipitates in a suspended state, when the precipitates that have already settled are made into a slurry and then transported by pump, or when the temperature of the liquid in an aquarium is In cases where it is necessary to maintain uniformity, a device for stirring the liquid is required. Various devices for this purpose have been proposed in the past. For example, Japanese Patent Publication No. 61-39239 discloses a stirring device for a heavy oil tank. Conventional stirring devices of this type, including this conventional device, are generally configured such that the stirrer body, which is equipped with a stirring device driven by an underwater motor, is moved up and down along a guide installed on the wall of the water tank. There is. The agitator main body is then raised and lowered by a hoist.

By the way, even in this type of equipment, the agitator needs to be lifted out of the tank for maintenance and inspection, to adjust the attitude of the agitator, and even to attach the agitator to a guide. Special equipment was required. The reason for this is that although it is equipped with a hoist, no special improvements have been made to the hoist's pedestal, etc.

Other conventional techniques include, for example, JP-A-55-
Publication No. 89092 discloses a mixer device for a storage tank. However, in this conventional technology, no improvements have been made to the roof on which the lifting device is installed, so when lifting the mixer for maintenance, inspection, posture adjustment, etc., the lifting device (lifting device consisting of a winch) (or a hanging mechanism) must be provided separately. Therefore, the above-mentioned special public service
The same problem as in Publication No. 39239 still exists.

[Purpose of the invention] The present invention was proposed in view of the various problems of the prior art described above, and is configured so that the main body of the agitator can be pulled up to a predetermined position and maintenance/inspection, installation, posture adjustment, etc. can be easily carried out. The object of the present invention is to provide an underwater agitation device that does not require any lifting equipment such as a crane.

[Structure of the invention] The underwater agitation device of the invention includes a base plate extending inward from the peripheral wall of the aquarium, a pedestal that is rotatably erected on the base plate, and a pedestal that is attached to the pedestal and is placed in the aquarium. a lifting shaft guide tube that supports the upper part of the vertically installed lifting shaft; a hoist that is provided on the pedestal and that hoists and unwinds the agitator body that moves up and down along the lifting shaft; an opening through which the lifting shaft is inserted is formed in the base plate,
The opening is formed with a notch having a width sufficient for the agitator main body to pass through, and the distance between the lower end of the elevating shaft guide tube and the base plate is set to be larger than the height dimension of the agitator main body. .

When carrying out the present invention, it is preferable to use a lifting shaft having a rectangular cross-section, as this will stabilize the posture of the stirrer body in the water, which is advantageous. Of course, a pipe-shaped shaft can also be used.

Further, it is preferable that the stirrer main body is configured to move up and down along the lifting shaft via the holder. Here, it is preferable that the holder has a two-piece structure to facilitate assembly and disassembly. Further, it is preferable that the holder and the stirrer main body be integrated by a horizontal connecting pin so that the attitude of the stirrer main body can be adjusted by rotating the main body around the pin axis.

Furthermore, the mechanism for rotatably erecting the pedestal on the base plate includes a lower receiving plate fixed to the base plate and having an upright flange, and a lower support plate fixed to the lower side of the pedestal and having a raised flange. It is preferable to include an upper receiving plate having a through hole formed therein that loosely fits into the flange of the receiving plate.

[Function] According to the present invention having the above-described configuration, when the hoist is operated to unwind and the agitator main body is submerged in water, the liquid in the water tank can be agitated. That is, when electricity is supplied to, for example, an underwater motor provided in the stirrer main body, the stirring blades are driven to rotate and the liquid is stirred.

According to the present invention, there is a gap greater than the height of the agitator body between the base plate and the lower end of the lifting shaft guide tube, and the agitator body passes through the opening of the base plate. Since the notch is formed with a width sufficient to allow the stirrer to be rolled up by operating the winding machine, the stirrer body can be rolled up above the base plate without interfering with the base plate. That is, without using a lifting device such as a crane, the main body of the agitator can be lifted above the base for maintenance, inspection, installation, and removal, etc.

Furthermore, since the present invention has a mechanism for rotatably erecting the pedestal on the base plate, maintenance and
Prior to inspection, installation, removal, etc., the pedestal, which is rotatably provided on the base plate, is rotated by a predetermined amount and suspended, so that the agitator main body is placed on the base plate. As a result, operations such as maintenance, inspection, installation, and removal can be performed more easily.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 1 indicates the peripheral wall of the water tank. A base plate 2 is fixed to the upper part of this peripheral wall, and its tip 3 projects inward of the aquarium. An opening 4 is formed at this tip, through which a lifting shaft (described later) is inserted, and a wide notch (not shown) communicating with the opening is also formed, and through this notch, a stirring device (described in detail later) is inserted. The main body can pass through the base plate.

A pedestal 10 is rotatably provided at the tip 3 of the base plate. That is, the pedestal 10 is erected so as to be rotatable around the opening 4 of the tip 3. A lower support plate 6 having an upright flange 5 is fixed to the base plate in order to be rotatable, and a through hole is formed at the lower end of the mount to loosely fit into the flange 5 of the lower support plate. A receiving plate 11 is fixed. and,
These receiving plates allow the pedestal 10 to rotate relative to the base plate. Of course, it is not necessary to rotate 360 degrees, for example, rotation within a range of 180 degrees is sufficient, and a stopper or the like for fixing it in a predetermined position is provided as necessary. In the upper part of the pedestal 10,
A lifting shaft guide tube 12 is fixedly installed. Guide tube 1
2 has a rectangular cross-sectional shape, and an elevating shaft 30 is inserted through this guide tube so that it can only slide. Note that the lower end of the lifting shaft 30 may or may not be fixed to the bottom of an aquarium (not shown).

The distance D between the lower end 13 of the lifting shaft guide cylinder 12 and the upper surface of the base plate 2 is equal to the height H of the stirrer main body 20.
It is designed to be larger. Further, a hoist 14 is provided at the upper end of the gantry 10.
Since the hoist 14 is provided at the upper end of the gantry, its lower end is naturally located above the lower end 13 of the guide cylinder. The hoist 14 is equipped with a handle 15, a winding drum 16, etc., and a wire 17 is fed out from the winding drum to suspend the agitator body.

The stirrer main body 20 is guided by a lifting shaft 30 via a holder 31 so as to move up and down in the water tank. The stirrer itself is a known one,
It is composed of an underwater motor, stirring blades 21, and the like.

The holder 31 includes a cylindrical portion 32 into which the lifting shaft 30 is inserted, and a bracket portion 33. The cylindrical portion 32 has a two-part structure. Therefore, the holder can be easily attached to and detached from the lifting shaft. Further, when the cylindrical portion 32 of the holder is assembled and attached to the lifting shaft 30, the holder 31 can slide along the shaft 30, but the shaft 30 and the holder 31 cannot rotate relative to each other.

The bracket portion 33 has a substantially right-angled triangular shape when viewed from the front, and a horizontal connection pin 34 is provided near the right angle portion, and the agitator main body is attached to the holder 31 by this pin 34. The stirrer main body 20 is connected to a holder 31 by pins 31.
It is rotatable in the vertical direction about the pin as shown by arrow A in the figure. That is, the stirring blade 21
The structure allows the discharge direction to be changed up or down. In order to fix the agitator body 20 at a predetermined position in the discharge direction, the bracket part 33 is provided with, for example, a plurality of pin holes 35 in an arc shape, and these predetermined pin holes are used to hold the agitator main body 20 at a predetermined angle. Holder 31
Fixed.

The underwater stirring device of the above embodiment operates as follows. That is, as shown in FIG.
The agitator main body 20 is submerged in a predetermined position in the water tank by being rewound, and the stirring blades 21 are driven to stir the liquid in the water tank. At this time, frame 1
0 is fixed to the base plate 2 in a state where rotation is restricted, so neither the pedestal 10 nor the elevating shaft guide tube 12 rotates. Therefore, neither the lifting shaft 30 nor the holder rotates. Therefore, the stirrer main body 20 does not rotate either, but instead discharges and stirs the liquid in a predetermined direction.

If maintenance, inspection, or position adjustment of the agitator main body 20 is required, the hoist 14 is operated to lift the agitator main body 20 above the base plate 2, as shown in FIG. The frame 10 has a space 18
is formed, and the lower end 13 of the guide tube for the lifting shaft is
Since the height is sufficiently higher than that of the stirrer body 20, the stirrer body can also be rolled up through a notch in the base plate (not shown). Predetermined work is performed in this state. In addition, it is also possible to work by passing a plate or the like through the notch in the rolled up state, then unwinding it, and leaving the stirrer body still on the plate. Adjustment of the discharge direction of the stirring blade 21, that is, adjustment of the horizontal discharge direction, can be performed by rotating the pedestal 10 with respect to the base plate 2, and adjustment of the vertical discharge direction can be performed by using the pin hole 35. It is clear that this can be done.

[Effects of the invention] As detailed above, according to the invention, there is a gap greater than the height of the agitator body between the base plate and the lower end of the lifting shaft guide cylinder, and the opening of the base plate has a notch wide enough for the stirrer body to pass through, so when lifting the stirrer body with a hoist, the stirrer body can be lifted above the base plate without interfering with the base plate. I can do it. Therefore, the operation of attaching and detaching the agitator main body to the lifting shaft, as well as maintenance and inspection, and posture adjustment, can be easily performed without the need for a hanging device such as a crane.

In addition, since the pedestal is rotatably erected on the base plate, the main body of the agitator can be placed on the base plate, and operations such as maintenance, inspection, installation, and removal can be performed more easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view showing the stirrer body submerged in a water tank, and FIG. 2 is a side view showing the stirrer body pulled up onto a base plate. DESCRIPTION OF SYMBOLS 1... Water tank wall, 2... Base plate, 10... Frame, 12... Guide tube for lifting shaft, 13... Lower end of guide tube for lifting shaft, 14... Winding machine, 20... Stirrer main body.

Claims (1)

[Scope of utility model registration request] A base plate that extends inward from the surrounding wall of the water tank, a pedestal that is rotatably erected on the base plate, and an upper part of the lifting shaft that is attached to the pedestal and that is erected in the water tank. and a hoist provided on the pedestal for hoisting and lowering the agitator main body that moves up and down along the elevating shaft, and the elevating shaft is mounted on the base plate. An opening to be inserted is formed, and the opening has a notch wide enough for the agitator main body to pass through,
An underwater stirring device characterized in that a distance between a lower end of the guide tube for the lifting shaft and the base plate is set to be larger than a height dimension of the stirrer main body.