JP4542716B2 - Underwater stirrer and stirrer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underwater stirrer and an agitator, and more particularly to an underwater agitator having a simple structure capable of agitating a liquid over a wide range by supplying and exhausting air and an agitator using the same.
[0002]
[Prior art]
In a water treatment device, a sewage treatment device, a sewage purification device, and the like, a stirrer is used to perform a stirring treatment by adding a flocculant to water to be treated.
[0003]
As such a stirrer, for example, a drive unit such as a motor is installed on a water tank or a storage tank in which water to be treated is stored, and the drive is extended from the drive means into the water to be treated in the water tank or the storage tank. A stirrer blade is provided at the tip of the shaft, and the stirrer blade is rotated by a drive means, thereby creating an upward flow or a downward flow in the water to be treated in the water tank or the storage tank to stir the water to be treated. .
[0004]
[Problems to be solved by the invention]
However, in such a stirrer, in order to hold the drive means installed on a water tank or a storage tank, it is necessary to provide a robust fixing base. Also, in general, on the water tank or storage tank, various pipes for supplying the treated water into the tank or discharging the treated water to the outside of the tank are provided, but if a driving means is provided on the water tank or the storage tank, However, there is a problem that the placement position of these pipes is restricted and the degree of freedom in pipe design is greatly impaired.
[0005]
On the other hand, in order to stir the water to be treated, the stirrer itself including the drive system is installed in the water to be treated, and the stirring blades are rotated to drive the water in the water to be treated for stirring. An underwater stirrer is also known. According to such an underwater stirrer, the above-mentioned problem that occurs when the drive means is installed on a water tank or a storage tank does not occur, but a severe watertight structure is required for the installation in the water, and the cost increases accordingly. There is a problem that leads to
[0006]
In addition, as a problem common to both, since the stirring blades existing in the water to be treated only rotate at a fixed position, the water to be treated in the water tank and the storage tank can be uniformly stirred over a wide range. In particular, when performing slow agitation where the water to be treated is agitated slowly by rotating the stirring blade at a low speed, the water to be treated cannot be uniformly agitated, and the stirring efficiency There is a very bad problem.
[0007]
This invention is made | formed in view of such a conventional situation, and makes it a subject to provide the stirring efficiency using water with high stirring efficiency of a to-be-processed water with a simple structure, and this. .
[0008]
[Means for Solving the Problems]
First aspect of the present invention, be provided with a stirring blade to the weight member attached expansion and contractible bladders by supply and exhaust of air, floated together with the weight member by its buoyancy by inflation of the bladder, the bladder by settling by the weight of the weight member by contraction, a underwater stirrer to stir the liquid by the agitating blade,
The weight member is formed in a cylindrical shape,
The floating bag is housed in a cage formed by a mesh-like member, a lattice-like member or a porous member made of metal or a synthetic resin material in the same shape as the shape of the floating bag when expanded, and the cage is the weight member The underwater stirrer is characterized in that it is inserted into and fixed to the periphery of the upper end opening of the weight member .
[0009]
According to a second aspect of the present invention, the agitating blade is extended by a resistance of the liquid at the time of settling operation to increase its resistance and closed by a resistance of the liquid at the time of the floating operation to reduce the resistance. 2. The underwater agitator according to claim 1, wherein the underwater agitator is provided so as to be swingable between the storage positions.
[0010]
According to a third aspect of the present invention, the air supply / exhaust means installed on the ground is connected to the floating bag of the underwater agitator according to the first or second aspect via a flexible pipe, and the above-mentioned supply / exhaust means is connected to the floating pipe through the flexible pipe. A stirrer characterized in that air is supplied to and exhausted from a float bag.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a partially broken side view showing an underwater stirrer according to the present invention, and FIG. 2 is a plan view thereof.
[0012]
The underwater agitator A includes a weight member 1, a float bag 2, and a stirring blade 3 attached to the weight member 1.
[0013]
The weight member 1 is formed in a cylindrical shape from a metal having excellent corrosion resistance, such as stainless steel, and is made of a heavy material that settles under its own weight when thrown into water. Alternatively, the metal surface may be coated with a synthetic resin excellent in chemical resistance and corrosion resistance to impart chemical resistance and corrosion resistance. In addition, although the cylindrical example is shown in the illustrated example, as long as a floating bag 2 and a stirring blade 3 described later can be attached, the shape is not limited to a cylindrical shape, but is arbitrary.
[0014]
A buffer member 12 is provided on the entire periphery of the lower end opening 11 of the weight member 1 so that the shock can be reduced when the weight member 1 sinks and collides with the bottom of the water tank. It has become.
[0015]
The float bag 2 is formed in a bag shape that is substantially spherical when inflated with chemical-resistant / water-resistant rubber, polyethylene fiber, etc., and has a large number of openings on a mesh-like member, a lattice-like member, or a surface made of metal or a synthetic resin material. The inside of the floating bag 2 is accommodated in a car 21 formed in the shape substantially the same as the shape when the floating bag 2 is inflated by the formed porous member or the like, and the car 21 is inserted from the upper opening of the cylindrical weight member 1. It is attached to the weight member 1 by being fixed to the peripheral edge 13 of the upper end opening with an appropriate fixing tool such as a bolt nut 14 so that the buoyancy when the floating bag 2 is inflated can be exerted on the weight member 1. ing.
[0016]
The weight member 1 to which the floating bag 2 is attached is designed so as to have a weight that can be lifted together by the buoyancy generated when the floating bag 2 is inflated. Both float up, and when the floating bag 2 contracts, it sinks due to its own weight.
[0017]
Reference numeral 15 denotes an eyebolt that anchors the underwater agitator A in the water and locks a holding rope for stabilizing the behavior during the ascent and sink operations, and is provided in an appropriate number on the peripheral edge 13 of the upper end opening of the weight member 1. Yes.
[0018]
A flexible pipe 23 is connected to the top of the car member 21 via an air joint 22, and air is supplied into and out of the floating bag 2 by a supply / exhaust means (not shown) via the flexible pipe 23. The float bag 2 is inflated by supplying, and contracted by exhausting the float bag 2. Reference numeral 24 denotes a protective cover made of chemical resistant, water resistant rubber or the like that covers and protects the air joint 22.
[0019]
The stirring blades 3 are formed in a substantially flat plate shape from a metal plate or a synthetic resin plate, and a large number are attached to the outer peripheral surface of the weight member 1 at substantially equal intervals.
[0020]
As shown in the figure, these stirring blades 3 are preferably attached so as to be rotatable in the vertical direction in FIG. That is, the hinge 31 to which each stirring blade 3 is attached is provided with a stopper 32 that regulates the rotation range of the stirring blade 3, and the stirring blade 3 rotates about the hinge 31 as a support shaft, thereby the weight member 1. The lower surface side of the stirring blade 3 is supported at the position where it protrudes most to the side of the, and further rotation is restricted. Thereby, each agitating blade 3 projects to the side of the weight member 1, the lower surface thereof abuts against the stopper 32, and an expanded position (solid line position in FIG. 1) where further rotation is restricted, The hinge 31 is pivoted upward with the spindle as a support shaft, and can swing between a storage position (a broken line position in FIG. 1) stored in a contact manner on the outer peripheral surface of the weight member 1.
[0021]
In this way, when the stirring blade 3 swings between the expanded position and the storage position, during the operation of either the ascending operation or the sinking operation of the underwater agitator A (in the embodiment of FIG. 1, during the ascending operation) The to-be-treated water can be agitated by the expanded stirring blade 3, and an upflow or a downflow can be created in the to-be-treated water by repeating the floating and settling operations of the underwater agitator A.
[0022]
As shown in FIG. 3, the stirring device 100 using such an underwater stirrer A includes a compressor B1 which is a supply / exhaust means B for supplying and exhausting air to the underwater stirrer A and the floating bag 2 of the underwater stirrer A, and driving of the compressor B1. The controller B2 is configured to control the above. The compressor B1 and the controller B2 are installed on the ground, and are submerged in an aquarium 4 in which water to be treated is stored, and an underwater agitator A moored so that the holding rope 5 can move in the vertical direction. The compressor B1 is connected by a flexible pipe 23.
[0023]
As shown in FIG. 4, a plurality of underwater agitators A1, A2, A3, A4,... Are connected to the compressor B1 through a flexible pipe 23 so that air can be supplied and exhausted. The plurality of underwater agitators A1, A2, A3, A4,... May be simultaneously driven and controlled. At this time, a plurality of submerged agitators A1, A2, A3, A4,... Are installed in one aquarium or storage tank, so that two or more underwater agitators agitate the water to be treated in the aquarium or storage tank. You may make it handle at the same time.
[0024]
Next, the operation of the underwater agitator A according to the present invention and the operation of the agitator 100 using the underwater agitator A will be described with reference to FIG. 3. When air is supplied to the floating bag 2 of the underwater agitator A through the flexible pipe 23 by the compressor B1 under the control of the controller B, buoyancy is generated by the expansion of the floating bag 2, and the underwater agitator A is held by the holding rope. By being held at 5, the ascending operation is started while maintaining a substantially vertical position in water. Due to this floating operation, each stirring blade 3 receives the resistance of the water to be treated and pivots laterally around the hinge 31 as a support shaft, and eventually its lower surface abuts against the stopper 32 and stops at the expanded position. By further floating in this state, the water to be treated in the water tank 4 is gradually stirred from the bottom to the top by the spread stirring blade 3.
[0025]
When the underwater stirrer A rises to near the surface of the water to be treated, the air in the float bag 2 is then discharged through the flexible pipe 23 under the control of the controller B. As a result, the floating bag 2 contracts, and the underwater agitator A loses buoyancy and starts the sedimentation operation. By this settling operation, each agitating blade 3 in the expanded position receives the resistance of the liquid, rotates upward with the hinge 31 as a support shaft, and contacts the outer peripheral surface of the weight member 1 to receive the resistance of the liquid. It is stored so that there is no. As a result, the weight member 1 quickly sinks to the settling standby position near the bottom of the water tank 4 to prepare for the next levitation operation.
[0026]
Thereafter, ascending and sinking operations are repeated in the same manner, an upward flow indicated by an arrow is created in the water to be treated in the water tank 4, and the entire water to be treated is uniformly stirred.
[0027]
As described above, the underwater stirrer A according to the present invention performs a slow operation using the buoyancy of the float bag 2 and the weight of the weight member 1, so that it is very useful when the water to be treated in the water tank 4 is slowly stirred. Is suitable. Moreover, during the operation of the underwater stirrer A, the water to be treated is stirred by moving from the bottom of the water tank 4 to the vicinity of the water surface without stopping at one point of the water to be treated. It can be uniformly stirred and is extremely excellent in stirring efficiency.
[0028]
In addition, since the underwater agitator A does not have an electric drive unit such as a motor provided in a conventional underwater agitator, the structure is simplified, the weight is relatively light, and the operation sound is extremely quiet. There is also an advantage of being.
[0029]
Furthermore, since the stirring device 100 according to the present invention can perform the stirring operation by the underwater stirrer A by the supply / exhaust by the air supply / exhaust means B, the running cost (power cost) can be kept low, and the underwater stirrer A and the ground installation Since it is only necessary to connect the compressor B1 of the air supply / exhaust means B via the flexible pipe 23, it is not necessary to lay electrical wiring for each submerged stirrer A, and large-scale electrical work is required. There is no advantage. Further, for example, as shown in FIG. 5, even when the underwater agitator A is installed in the storage tank 6 whose upper surface is covered, a robust fixing for installing the agitator on the storage tank 6 as in the prior art. There is no need to provide a stand, the degree of freedom in piping design is improved, and the equipment cost can be greatly reduced.
[0030]
In the underwater agitator A described above, the stopper 32 of the hinge 31 abuts on the lower surface of the agitating blade 3 and rotates so that each agitating blade 3 is in the expanded position during the ascending operation and agitates the water to be treated. However, as shown in FIG. 6, the stirring blade 3 is rotated at the position where the stirring blade 3 rotates around the hinge 31 as a support shaft and protrudes most to the side of the weight member 1. You may provide so that the upper surface may be supported and the rotation may be controlled. As a result, each agitating blade 3 protrudes to the side of the weight member 1 and abuts against the stopper 32, and rotates downward with the hinge 31 serving as a support shaft. Then, it can swing between the storage position where the weight member 1 is stored in contact with the outer peripheral surface of the weight member 1.
[0031]
Therefore, when the floating operation is performed by the expansion of the float bag 2, each stirring blade 3 receives the resistance of the water to be treated and rotates downward with the hinge 31 as a support shaft, and comes into contact with the outer peripheral surface of the weight member 1 to reduce the resistance of the liquid. It is stored so as not to receive it. Thereby, the weight member 1 rises promptly. Further, when the settling operation is performed due to the shrinkage of the floating bag 2, each stirring blade 3 receives the resistance of the water to be treated and rotates to the side with the hinge 31 as a support shaft. Stop on. By further settling operation in this state, the water to be treated is stirred by the expanded stirring blade 3, and stirring is performed by the reverse operation to the above embodiment.
[0032]
In this aspect, since the stirring blade 3 is expanded during the settling operation of the submerged stirrer A, there is no possibility that the submerged stirrer A will collide with the bottom of the water tank 4 or the storage tank 6 vigorously. When moored by 5, the load on the holding rope 5 is also reduced.
[0033]
Although not shown, instead of the stirring blade 3 formed of a substantially flat plate material, the stirring blade itself can be formed of an air bag. That is, an air bag formed so as to protrude to the side of the weight member 1 when inflated by supplying air from the air supply / exhaust means B is attached to the outer periphery, and the air bag is inflated to the side. The air bag is extended to function as a stirring blade, and the resistance is reduced by contracting the air bag. At this time, since the inflated air bag itself functions as a floating bag, the floating bag 2 is not necessarily provided.
[0034]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the stirring efficiency using to-be-processed water is high, and it is cheap with a simple structure, and a stirring apparatus using the same can be provided.
[Brief description of the drawings]
FIG. 1 is a partially broken side view of an underwater stirrer. FIG. 2 is a plan view of an underwater stirrer. FIG. 3 is an explanatory view showing the structure of the stirrer. FIG. 5 is a side view showing a case where an underwater agitator is used in a storage tank. FIG. 6 is a partial side view showing another aspect of a stirring blade.
A: Underwater stirrer B: Supply / exhaust means B1: Compressor B2: Controller 1: Weight member 2: Floating bag 3: Stirring blade 4: Water tank 5: Holding rope 6: Storage tank 23: Flexible pipe 100: Stirring device

Claims (3)

Will provide a stirring blade to the weight member attached expansion and contractible bladders by supply and exhaust of air, the floats with the weight member by its buoyancy by inflation of the bladder, by the weight of the weight member by contraction of the bladder by settling a underwater stirrer to stir the liquid by the agitating blade,
The weight member is formed in a cylindrical shape,
The floating bag is housed in a cage formed by a mesh-like member, a lattice-like member or a porous member made of metal or a synthetic resin material in the same shape as the shape of the floating bag when expanded, and the cage is the weight member An underwater agitator, which is inserted into the weight member and fixed to the periphery of the upper end opening of the weight member . The agitating blade swings between an expanded position where the resistance of the liquid is extended by the resistance of the liquid during the sedimentation operation and increases the resistance, and a storage position which is closed by the resistance of the liquid during the ascent operation and decreases the resistance. The underwater agitator according to claim 1, wherein the underwater agitator is provided. An air supply / exhaust means installed on the ground is connected to the float bag of the underwater agitator according to claim 1 or 2 through a flexible pipe, and air is supplied to or exhausted from the float bag by the air supply / exhaust means through the flexible pipe. A stirrer characterized by performing the above.

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