JP4685738B2 - Stirrer - Google Patents

Description

  The present invention relates to a stirrer, and in particular, by moving a stirrer up and down in a stirring tank, uniform stirring of the stirring fluid in the stirring tank can be performed with low power and high efficiency even in a high-depth tank or the like. The present invention relates to a stirrer.

  Conventionally, in sewage treatment, construction wastewater treatment, etc., when treating a fluid such as sewage containing impurities such as earth and sand, sludge, for example, when treating sludge water, flocculant, sterilizing A chemical such as an agent is put into a stirring tank to which sludge water is supplied and stirred by a stirrer so as to perform necessary processing such as aggregation and sterilization.

  By the way, the conventional stirrer forcibly stirs the entire tank by rotating the screw-shaped stirring blade with a driving body such as a motor and using the water flow generated thereby to circulate in the tank. I have to.

  For this reason, the stirring power in this stirrer becomes large, and it cannot be used in a place where there is no commercial power. In addition, there is a problem that the power cost increases and the running cost increases in a high-depth tank.

  An object of the present invention is to provide a stirrer that can perform uniform stirring with low power and high efficiency in the entire tank in view of the problems of the conventional stirrer.

In order to achieve the above object, a stirrer according to the present invention is a stirrer capable of moving up and down by a buoyancy change in a stirring fluid in a tank, and comprising a hollow stirring body and a shrinkable liquid container disposed in the tank A mechanism that changes the buoyancy by supplying and discharging the fluid held in the stirrer, a guide mechanism that guides the raising and lowering of the stirrer, and a bellows-like shape with a lower surface provided at the bottom of the stirrer and a part of the peripheral wall opening And a telescopic cylinder body .

  In this case, the supply and discharge of the fluid inside the stirrer can be performed by detecting the lift position of the stirrer and driving the pump with a drive energy source provided inside the stirrer.

  Moreover, it can comprise so that the detection of the raising / lowering position of a stirring body may be performed with the pressure sensor which detects water pressure or an air pressure.

  Moreover, the raising / lowering position detection of a stirring body can be comprised by the pushbutton switch which protrudes in the upper and lower parts of a stirring body, respectively, and operate | moves by contacting a part of tank.

  Further, a water level sensor that detects the water level of the fluid supplied to and discharged from the stirring body can be provided, and supply and discharge of the fluid can be stopped when a predetermined water level is detected by the water level sensor.

  Further, a perforated disc-shaped flow forming plate that stirs the stirring fluid by moving up and down can be installed around the stirring body.

According to the stirrer of the present invention, a stirrer capable of moving up and down by a buoyancy change in a stirring fluid in a tank, which is a hollow stirrer and a fluid held in a contractible liquid container disposed in the tank Is provided with a mechanism for changing the buoyancy by supplying and discharging the stirring body and a guide mechanism for guiding the raising and lowering of the stirring body. It can be moved up and down in the agitating fluid, so that energy consumption can be reduced even in a high-depth tank, and the inside of the tank can be uniformly stirred.
In addition, the fluid held in the liquid container is separated from the agitating fluid and supplied to the agitating tank, so that the agitating fluid can be sanitized without taking it into the agitating tank, and the agitator can be easily maintained after use. Can be done.

Then, by providing a bellows-like telescopic cylinder whose lower surface and a part of the peripheral wall are open at the lower part of the stirring body, when the stirring body descends, the lower end of the telescopic cylinder first reaches the bottom, and the lower surface of the telescopic cylinder is Even after being blocked by the bottom of the tank, the upper part of the stirrer descends to compress and contract the telescopic cylinder, and the agitating fluid inside the telescopic cylinder flows out from the gap on the lower surface and the opening in the peripheral wall, Thus, a high flow rate is generated at the bottom of the tank, and the stirring fluid at the bottom of the tank which is difficult to be stirred can be reliably stirred.

  In addition, the supply and discharge of the fluid inside the stirrer is performed by detecting the lift position of the stirrer and driving the pump with a drive energy source provided inside the stirrer, so that stirring can be performed without supplying power from the outside. Fluid agitation in the tank can be easily performed.

  In addition, by detecting the raising / lowering position of the stirring member with a pressure sensor that detects water pressure or air pressure, it is possible to easily detect the raising / lowering position of the stirring member and to reliably switch the supply and discharge of the stirring fluid. it can.

  In addition, detection of the ascending / descending position of the stirrer is performed by a push button switch protruding from the upper and lower portions of the agitator and operating by contacting a part of the tank. It is simple and can reliably switch the supply and discharge of the stirring fluid.

  In addition, a water level sensor that detects the water level of the fluid supplied to and discharged from the stirring body is provided, and the water level inside the stirring body is detected by stopping the supply and discharge of the fluid when a predetermined water level is detected by the water level sensor. Thus, the buoyancy of the stirrer can be set to a preset upper limit value and lower limit value.

  In addition, by installing a perforated disc-shaped flow plate around the stirrer that stirs the agitating fluid by raising and lowering, the stirring fluid is agitated by the perforated disc flow-forming effect as the stirrer moves up and down. can do.

  Hereinafter, embodiments of the stirrer of the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of the stirrer of the present invention.

This stirrer is capable of moving up and down in the agitating fluid in the agitating tank 1 by buoyancy change, and the agitating body 2 is filled with the hollow agitating body 2 and the fluid held in the contractible liquid containers 3a and 3b. A mechanism for changing the buoyancy by supplying and discharging and a guide mechanism for guiding the raising and lowering of the agitator 2 are provided.
The supply and discharge of the fluid inside the stirring body 2 is performed by detecting the ascending / descending position of the stirring body 2 and driving the pumps P1 and P2 by a battery provided inside the stirring body 2 or by external power feeding.

As shown in FIG. 3, the stirring tank 1 has a shape capable of stirring the stirring fluid W, such as a rectangular parallelepiped or a cube having a required internal volume, and supplies the stirring fluid W to be stirred into the stirring tank 1. The configuration is such that the treated water after stirring can be drained, a stirring body support frame 41 is disposed at the top, and a guide for vertically suspending the guide rod 4 as a guide mechanism on the stirring body support frame 41 A bar support 42 is attached.
The guide bar 4 restrains the operations other than the raising and lowering of the stirring body 2 so that the stirring body 2 can smoothly move up and down in the stirring tank 1.

As shown in FIG. 1, the stirrer 2 is formed of a hollow ring-like non-stretchable hermetic cylindrical container in which a through hole 21 penetrating vertically is formed at the center.
Around the stirrer 2, a perforated disc-shaped flow forming plate 5 for stirring the stirring fluid W by raising and lowering is installed.
The flow forming plate 5 has circular holes 51 formed radially in the disk, and the stirring fluid W is stirred by the flow forming effect of the circular plate and the round holes 51 as the stirring body 2 is raised and lowered.

Further, in this embodiment, the stirring body 2 includes a telescopic supply container 3a for supplying a fluid such as water to the stirring body 2, and a telescopic drainage container 3b for discharging the fluid from the stirring body 2. And are connected.
The liquid supply container 3a and the drainage container 3b are independently provided outside the agitator 2, and are separated from the agitating fluid W by pipe lines 31 each having a pump P1, P2. It is connected to the stirring body 2.
In this embodiment, the liquid supply container 3a and the drainage container 3b and the two pumps P1 and P2 are provided. However, the liquid supply container 3a and the drainage container 3b are integrated into one. It is also possible to respond by rotating the pump in the forward and reverse directions.

The stirrer 2 includes a pressure sensor 6 that detects water pressure or air pressure. The pressure sensor 6 detects the lift position of the stirrer 2.
The pressure sensor 6 detects water pressure or air pressure on the water surface, and operates the pump P2 of the liquid supply container 3a when the stirring body 2 is located near the water surface from the numerical value.
Further, when the stirring member 2 is located at the bottom of the water due to the water pressure, the pump P1 of the drainage container 3b is operated.

The stirrer 2 is provided with push button switches 7 that protrude from the upper and lower parts of the stirrer and operate by contacting a part of the tank. When the pressure sensor 6 breaks down, the stirrer 2 is moved up and down. The position can be detected by these push button switches 7.
The push button switch 7 is disposed so as to protrude from the upper surface and the lower surface of the agitator 2, so that the agitator 2 ascends in the agitation tank 1 and comes into contact with the upper guide rod support 42 and the like. Thus, the upper push button switch 7 is operated.
Moreover, when it falls to the tank bottom part, the pushbutton switch 7 of the lower part of the stirring body 2 is made to operate by contacting a tank bottom directly or indirectly through a part of expansion-contraction cylinder. .

Furthermore, a water level sensor 8 that detects the water level of the fluid supplied to and discharged from the stirring body 2 is provided inside the stirring body 2.
The water surface sensor 8 determines that the buoyancy of the stirring body 2 is a preset upper limit value or lower limit value when the two water surface sensors 8a and 8b detect a predetermined water level.
Then, the pump P1 or P2 operating with the pressure sensor 6 as a trigger is stopped to stop the fluid supply / discharge.
The upper limit value of buoyancy is the specific gravity at which the stirrer 2 can obtain a sufficient flying speed, and the lower limit value of buoyancy is the specific gravity at which the stirrer 2 can obtain a sufficient lowering speed.

Regardless of the supply and discharge of the stirring body 2, a bellows-like telescopic cylindrical body 9 having an opening on the lower surface and a part of the lower part of the peripheral wall is provided below the stirring body 2.
When the stirrer 2 is lowered, the lower end of the expandable cylinder 9 is first bottomed, and the upper part of the stirrer 2 is also lowered after the lower surface of the expandable cylinder 9 is closed by the tank bottom. As a result, the telescopic cylinder 9 is compressed and contracted.
As a result, as shown in FIG. 2, the agitating fluid W inside the telescopic cylinder 9 flows out from the gap on the lower surface or the opening 91 of the peripheral wall, and a high flow velocity is generated at the bottom of the tank by the jet, so that the tank is not easily stirred. Stirring of the stirring fluid W at the bottom can be performed reliably.

Next, the operation of this stirrer will be described.
The stirring fluid W is supplied into the stirring tank 1 and, for example, by driving the pump P2 in the stirring body 2, the fluid in the liquid supply container 3a is sucked into the stirring tank 1, and the stirring body 2 is filled with the fluid. The air in the stirring member 2 is compressed in accordance with the amount of fluid sucked, and the weight mixing ratio of air and fluid is changed.
As a result, the specific gravity of the stirring body 2 increases, and the stirring body 2 descends in the stirring tank 1 along the guide rod 4.
At this time, the stirring fluid W can be stirred by the flow-forming effect of the perforated disk of the flow-forming plate 5 as the stirring body 2 is lowered.

In this case, when a specified amount of fluid is supplied, the pump P2 is stopped by detecting the rising water surface by the water surface sensor 8a. However, since the buoyancy of the stirrer 2 is reduced, it continues to descend without power. .
When the stirring body 2 reaches the bottom of the tank, as shown in FIG. 2, the lower end of the expansion / contraction cylinder 9 first settles down, and the lower surface of the expansion / contraction cylinder 9 is closed by the tank bottom. As the upper part of the lowering part descends, the telescopic cylinder 9 is compressed and contracted.
As a result, the stirring fluid W inside the expansion / contraction cylinder 9 flows out from the gap on the lower surface of the expansion / contraction cylinder 9 or the opening 91 of the peripheral wall, and the jet flow generates a high flow velocity at the bottom of the tank. The fluid W can be reliably stirred.

When the stirring body 2 reaches the bottom of the tank, the pressure sensor 6 detects the water pressure at the bottom of the water, detects from the water pressure that the stirring body 2 is located at the bottom of the water, and operates the pump P1 of the drainage container 3b. .
In this case, when the fluid is discharged by a specified amount, the pump P1 is stopped by detecting the lowered water surface by the water surface sensor 8b. However, since the buoyancy is increased, the agitator 2 continues to rise without power.
At this time, the stirring fluid W can be stirred again by the flow-forming effect of the perforated disk of the flow-forming plate 5 as the stirring body 2 rises.

Further, when the stirring body 2 rises and reaches a predetermined position, the pressure sensor 6 detects the water surface or the pressure on the water surface, and detects that the stirring body 2 is located on the water surface from the pressure, The pump P2 of the liquid supply container 3a is operated.
Then, a prescribed amount of fluid is supplied to the stirring body, the buoyancy is reduced, and it is lowered again to the bottom of the tank.
Thereafter, such ascending and descending operations are repeated, and the stirring fluid W in the tank is stirred uniformly with small power and high efficiency.

Thus, the stirrer according to the present embodiment is a stirrer capable of moving up and down by the buoyancy change in the stirring fluid W in the tank, and the stirring member includes the hollow stirring member 2 and the fluid held in the contractible liquid container. 2 is provided with a mechanism for changing the buoyancy by supplying and discharging to 2 and a guide mechanism for guiding the raising and lowering of the stirring body 2, so that the stirring body 2 can be moved by a slight pump power that changes the buoyancy by supplying and discharging fluid. It can be moved up and down in the agitating fluid W, and thereby, even in a high-depth tank, the energy can be reduced and the tank can be uniformly stirred.
In addition, the fluid held in the liquid containers 3a and 3b is separated from the stirring fluid W and supplied to and discharged from the stirring tank 1, so that the stirring fluid W is hygienically stirred without being taken into the stirring tank 1 and used. The subsequent agitator maintenance can be easily performed.

  In this case, the supply and discharge of the fluid inside the stirring body 2 is performed by driving the pumps P1 and P2 with the drive energy source provided inside the stirring body 2 by detecting the raising and lowering position of the stirring body 2. The fluid in the agitation tank 1 can be easily agitated without supplying.

  Moreover, the detection of the raising / lowering position of the stirring member 2 is performed by the pressure sensor 6 that detects water pressure or air pressure, so that the raising / lowering position of the stirring member 2 can be easily detected and the supply / discharge of the stirring fluid W can be reliably switched. Can be done.

  Moreover, the raising / lowering position of the stirring body 2 is detected by a push button switch 7 that protrudes from the upper and lower portions of the stirring body 2 and operates by contacting a part of the tank. The detection of the position is simple, and the supply / discharge of the stirring fluid W can be switched reliably.

  Further, by providing the bellows-like telescopic cylinder body 9 whose lower surface and a part of the peripheral wall are open at the lower part of the stirring body 2, when the stirring body 2 descends, the lower end of the telescopic cylinder body 9 first reaches the bottom, and the telescopic cylinder Even after the lower surface of the body 9 is closed by the bottom of the tank, the upper part of the stirring body 2 is lowered so that the telescopic cylinder 9 is compressed and contracted. It is possible to generate a high flow velocity at the bottom of the tank by the jet flow, and reliably stir the stirring fluid W at the bottom of the tank that is difficult to stir.

  Further, water level sensors 8a and 8b for detecting the water level of the fluid supplied to and discharged from the stirring body 2 are provided, and when the predetermined water level is detected by the water level sensors 8a and 8b, the supply and discharge of the fluid is stopped. The water surface inside the body 2 can be detected, and the buoyancy of the stirring body 2 can be set to a preset upper limit value and lower limit value.

  Further, by installing the perforated disc-shaped flow forming plate 5 that stirs the stirring fluid W by raising and lowering around the stirrer 2, as the stirrer 2 moves up and down, The stirring fluid W can be stirred.

  As described above, the stirrer of the present invention has been described based on the examples thereof, but the present invention is not limited to the configurations described in the above examples, and the gist thereof includes, for example, appropriately combining the configurations described in the respective examples. The configuration can be changed as appropriate without departing from the scope of the invention.

  The stirrer of the present invention has the characteristic that the buoyancy of the stirrer is changed by raising and lowering the buoyancy of the stirrer by feeding and discharging the fluid into the stirrer, and thus the stirrer in the tank is stirred. It can be suitably used as an agitator for closed water areas or fluid foods.

It is sectional drawing which abbreviate | omitted the guide bar which shows one Example of the stirrer of this invention. It is a fragmentary sectional view which shows the state which the stirrer settled. It is the perspective view which fractured | ruptured a part which shows the same stirrer and a stirring tank.

DESCRIPTION OF SYMBOLS 1 Stirring tank 2 Stirring body 21 Through-hole 3a Liquid supply container 3b Drainage container 31 Pipe line 4 Guide rod (guide mechanism)
41 Stirring body support frame 42 Guide rod support 5 Flow-casting plate 51 Round hole 6 Pressure sensor 7 Push button switch 8 Water surface sensor 9 Telescopic cylinder 91 Opening P Pump W Stirring fluid

Claims (6)

A stirrer capable of moving up and down in the agitating fluid in the tank by changing the buoyancy, and supplying and discharging the hollow agitating body and the fluid held in the contractible liquid container disposed in the tank to the agitating body A mechanism for changing the buoyancy, a guide mechanism for guiding the raising and lowering of the stirrer, and a lower surface provided at the lower part of the stirrer and a bellows-like telescopic cylindrical body having a part of the peripheral wall open. Stirrer.   2. The stirrer according to claim 1, wherein the supply and discharge of the fluid inside the stirring body is performed by detecting a lift position of the stirring body and driving a pump by a driving energy source provided inside the stirring body. .   The stirrer according to claim 1 or 2, wherein detection of the raising and lowering position of the stirrer is performed by a pressure sensor that detects water pressure or air pressure.   The detection of the ascending / descending position of the stirrer is performed by a push button switch that protrudes from the upper and lower portions of the stirrer and operates by contacting a part of the tank. 2. The stirrer according to 2. 2. A water level sensor for detecting the water level of the fluid supplied to and discharged from the stirring body is provided, and the supply and discharge of the fluid is stopped when a predetermined water level is detected by the water level sensor. The stirrer according to 3 or 4 . The stirrer according to claim 1, 2, 3, 4, or 5, wherein a perforated disc-shaped flow forming plate for stirring the stirring fluid by raising and lowering is installed around the stirring body.

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