JP2005279383A - Stirrer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stirrer capable of stirring the whole of the inside of a vessel uniformly and highly efficiently with low power. <P>SOLUTION: This stirrer consists of a stirring body 2 which moves up and down by changing buoyancy within a stirring fluid W in the vessel 1, is rotatable and has a mechanism 8 changing the buoyancy by supplying a part of the fluid W into the body 2 or discharging a part of the fluid W from the body 2 and a stirring blade 3 and a guide bar 4 restricting the motion of the body other than vertical and rotational motions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stirrer, and in particular, a stirrer capable of performing uniform stirring of a stirring fluid in a stirring tank with low power even in a high-depth tank or the like by raising and lowering a stirring body in the stirring tank. It is about.

  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 stirrer forcibly stirs the entire tank by rotating the stirring blades with a driving body such as a motor, and circulating the liquid or fluid in the tank using the water flow generated thereby. ing.

  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, the stirrer of the present invention is a stirring body that can rotate while moving up and down in the stirring fluid in the tank by changing buoyancy, and a part of the stirring fluid is supplied to and discharged from the stirring body. And a stirring body having a stirring blade and a guide mechanism for restraining movement of the stirring body in directions other than the vertical direction and the rotation direction.

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

  Moreover, it can comprise so that the detection of the raising / lowering position of a stirring body may be performed with the switch protrudingly provided to the stirring body.

  The drive energy source can be a storage battery.

  Moreover, it can comprise so that charge to a storage battery may be performed by generating electric power using the rotational force at the time of raising / lowering of a stirring body.

  Moreover, it can comprise so that the stirring fluid in a tank may be stirred by discharging | emitting the stirring fluid inside a stirring body in a descent | fall position.

  According to the stirrer of the present invention, the stirring body that can be rotated while moving up and down in the stirring fluid in the tank by changing the buoyancy, and the buoyancy is changed by supplying and discharging a part of the stirring fluid to and from the stirring body. Since it comprises a stirring body having a mechanism and stirring blades, and a guide mechanism for restraining movement of the stirring body in directions other than the vertical direction and the rotation direction, the stirring body is supplied and discharged by stirring fluid into and out of the stirring body. Since it is raised and lowered while rotating, the inside of the tank can be stirred uniformly with less energy consumption.

  In addition, power is supplied and discharged from the outside by supplying and discharging the stirring fluid inside the stirring body by detecting the ascending / descending position of the stirring body and driving the pump by a driving energy source provided inside the stirring body. Without stirring, the fluid in the agitation tank can be easily agitated.

  In addition, by detecting the raising / lowering position of the agitator with a switch protruding from the agitator, it is easy to detect the ascending / descending position of the agitator, and switching of the supply and discharge of the agitating fluid is ensured. It can be carried out.

  In addition, by using a storage battery as the drive energy source, the necessary power can be easily supplied.

  In addition, by configuring the storage battery to generate electricity using the rotational force when the stirrer is raised and lowered, it is possible to reliably perform the stirring operation even in locations where power cannot be supplied from the outside. it can.

  Further, by discharging the stirring fluid inside the stirring body at the lowered position, the stirring fluid in the tank is stirred, so that the stirring fluid at the bottom of the tank which is difficult to be stirred can be reliably stirred.

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

1 to 3 show a first embodiment of a stirrer according to the present invention.
This stirrer takes in and out a part of the stirring fluid W in the stirring tank 1 into and out of the stirring tank 1 into which sewage, other liquid, and fluid W (hereinafter referred to as “stirring fluid W”) are introduced. A mechanism that changes the buoyancy by disposing the agitator 2 that can be discharged in the agitator 1 so as to be movable up and down, and supplying and discharging a part of the agitating fluid to the inside of the agitator 2, specifically, By disposing the pump 8 or the like and moving the stirring body 2 up and down by controlling the supply and discharge of the stirring fluid W into the stirring body 2, the power of the stirring fluid W in the stirring tank can be reduced with little power even in a deep tank. It is configured so that uniform stirring can be performed efficiently and reliably.

The agitation tank 1 is not particularly limited. For example, as shown in FIG. 1, the agitation tank 1 has a shape capable of agitating the agitation fluid W, such as a cube having a required internal volume, a rectangle, and the like. The agitating fluid W to be agitated is supplied, and the treated water after agitation can be drained, and the agitator support frame 7 is disposed on the top, and the agitator support frame 7 has a guide as a guide mechanism. A guide bar support 5 for hanging the bar 4 vertically is attached.
In addition, although the upper surface of this stirring tank 1 is opening, it can also be set as a sealing type.

As shown in FIGS. 1 to 2, the stirring body 2 is formed in a ring shape or a donut shape in which a through hole 21 is formed so as to penetrate vertically through the central portion of the stirring body body. In the illustrated embodiment, four stirring blades 3 are provided on the outer peripheral surface so as to project in the radial direction at substantially equal intervals, whereby the stirring body 2 moves up and down. When stirring, the stirring blade 3 is raised or lowered while rotating the stirring member 2 by the resistance of the liquid. The size, shape, and number of the stirring blade 3 correspond to the size of the stirring tank. Shall.
The stirring body 2 is hermetically sealed, but forms a supply / discharge port 22 for sucking and discharging a part of the stirring fluid in the stirring tank to the inside of the stirring body. The pump 8 is disposed in the stirring body 2 so as to be connected to the supply / discharge port 22 so as to suck or discharge a part of the stirring fluid in the stirring tank.

A driving energy source necessary for driving the pump 8, for example, a storage battery 9 is disposed in the agitator 2, and is electrically wired so that electric power necessary for driving the pump 8 can be supplied. .
Furthermore, although not shown in the figure, it is also possible to provide a power generator in the stirrer 2 and generate power using the power that rotates when the stirrer is raised and lowered to charge the storage battery.
Moreover, the inside of the stirring body 2 can be made into a multilayer structure, and the apparatus etc. which are arrange | positioned in the stirring body 2 can be divided | segmented into each layer suitably, and can be arrange | positioned. For example, when the inside of the stirring member 2 has a two-layer structure, an apparatus is disposed in the upper layer, and air a and the stirring fluid w are supplied and discharged to the lower layer. In this case, the upper layer and the lower layer are connected via a tube, and electrical wiring or the like is performed using the tube.
Further, the pump 8 is driven by a push button switch 6 in the electrically wired circuit, and the push button switch 6 is disposed so as to protrude from the upper surface and the lower surface of the agitator 2, respectively. Thus, when the stirring body 2 moves up in the stirring tank 1 and comes into contact with the upper stirring body support frame 7 or the like, the upper push button switch 6 is operated, or when it is lowered to the bottom of the tank The push button switch 6 below the stirring body 2 is operated in contact with the bottom of the tank. Note that this electric circuit may be provided with a switching switch for switching the rotation direction of the pump 8 so that the rotation direction of the pump 8 is switched by the upper and lower push button switches 6.

  The guide rod 4 is passed through the through hole 21 of the ring-shaped stirring member 2. As shown in FIG. 1, the guide bar 4 is disposed so as to be suspended vertically from the guide bar support 5 of the stirring body support frame 7 or between the inner bottom surface of the stirring tank 1 and the stirring body support frame 7. It is fixed vertically so as to span. Thereby, when the stirring body 2 moves up and down in the stirring tank 1, it is guided by the guide rod 4 while restraining the plane position range when the stirring body 2 moves up and down, so that it can be moved up and down smoothly.

Next, the operation of this stirrer will be described.
By supplying the stirring fluid W into the stirring tank 1 and driving the pump 8 in the stirring body 2, a part of the stirring fluid W is put into the stirring tank 1 by, for example, normal rotation according to the rotation direction of the pump. The air a in the air chamber partitioned by the sheet 10 in the stirring body 2 is compressed and contracted according to the amount of the stirring fluid w sucked into the stirring body, so that the air (gas) a And the mixing ratio of the weight of the stirring fluid w are changed.
As a result, the weight of the stirring fluid increases, the buoyancy of the stirring body 2 decreases, and the stirring body 2 descends along the guide rod 4 in the stirring tank 1. At this time, the stirring blade 2 of the stirring body 2 receives resistance, and as shown in FIG. 3B, the stirring body 2 rotates counterclockwise to stir the stirring fluid W in the stirring body 2. Become.

In this case, the pump 8 is stopped by the timer, but the agitator 2 is lowered while rotating because the buoyancy is reduced.
And when the stirring body 2 reaches | attains the tank bottom part, the pushbutton switch 6 provided in the lower part of the stirring body is pushed, and this switch 6 turns on. When the stirring body 2 reaches the bottom of the tank in this way, the pump 8 that discharges the stirring fluid w in the stirring body 2 starts to operate by the action of the switch, and the stirring fluid w is discharged into the stirring tank 1. At this time, the stirring fluid W at the bottom of the stirring tank is further stirred using the jet discharged from the stirring fluid w.
The driving of the pump 8 for discharging the stirring fluid w is stopped when a time preset by a timer has elapsed.

  With the discharge of the stirring fluid w in the stirring body 2, the air a that has been compressed and contracted in the air chamber partitioned by the sheet 10 in the stirring body 2 starts to expand again, and the buoyancy of the stirring body 2 changes. That is, buoyancy is increased. The buoyancy of the stirrer 2 increases, and the buoyancy acts on the stirrer 2 so that the stirrer 2 rises while rotating in the stirring tank 1 in the clockwise direction. Even when the stirring body 2 is rising, the pump 8 stops when the discharge of the stirring fluid w in the stirring body 2 is completed, but the rising of the stirring body 2 is continued, and the pump 8 rises while rotating without power. It will be a thing.

When the agitator 2 is raised to a predetermined position, the upper push button switch 6 is turned on until the position of the agitator 2 is detected and the timer of the pump 8 is activated. When driven, the stirring fluid W in the stirring tank 1 is again sucked into the stirring body 2 from the supply / discharge port 22, and the buoyancy of the stirring body 2 decreases, and the stirring body 2 moves along the guide rod 4. It will descend again in 1.
By repeating this operation, the stirring fluid can be stirred by the rotation of the stirring body 2 while the stirring body 2 is rising and descending, and the entire tank can be uniformly stirred with high efficiency.
And as above-mentioned, in order to suppress that the air a compressed by the air chamber in the stirring body 2 melt | dissolves in the stirring fluid w, and gas decreases gradually, as shown in FIG. A sheet 10 is disposed at the gas-liquid interface in the body.
Further, the position of the stirring body 2, particularly the upper end position and the lower end position thereof, can be detected by, for example, a sensor or the like, and the stirring fluid in the stirring body can be supplied and discharged.
The air chamber partitioned by the sheet 10 in the stirring member 2 can be configured as an air chamber closed like a balloon in addition to the structure shown in the present embodiment.

4 to 5 show a second embodiment of the stirrer of the present invention.
This stirrer is configured to supply electric energy from the outside to the storage battery 9 in the stirrer 2, and this is not limited to a power generation device disposed outside the stirring tank. The power generation from the power generation device 12 and / or the wind power generation device 13 is charged by supplying power to the storage battery 9 in the stirring body via the converter 11 or the like.

4 to 5, the supply / exhaust port 2h of the agitator 2 is arranged on the top surface, and a valve 26 for closing the supply / exhaust port 2h is provided on the valve support piece 23 protruding from the agitator, and a spring 26 is provided. The valve 25 is opened and closed by the valve operating tool 41.
Further, the valve guide 24 protrudes from the valve support piece 23 so that the valve 25 can be raised and lowered accurately by the spring pressure. In the drawing, a packing projecting from the valve 25 is used to securely close the supply / discharge port 2h with the valve.

  The operation of the stirrer of this embodiment is the same as that of the first embodiment.

  As mentioned above, although the stirrer of the present invention has been described based on a plurality of examples, the present invention is not limited to the configurations described in the above examples, The configuration can be changed as appropriate without departing from the spirit of the invention.

  The stirrer of the present invention changes the buoyancy of the stirring body by supplying and discharging a part of the stirring fluid to and from the stirring body, and moves the stirring body up and down in the stirring tank fluid to rotate the stirring body. Since it has the characteristic of stirring the internal fluid, it can be suitably used for the purpose of stirring the reaction tank (anaerobic tank or anoxic tank) of the sewage treatment plant. It can also be used for stirring chemical reaction tanks and sensing machines for tank bottom conditions (persons check data sensed at the tank bottom at the top of the liquid).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially broken perspective view showing a first embodiment of a stirrer according to the present invention. It is sectional drawing which shows the structure of a stirring body. It is a principle explanatory view, (A) shows when the stirrer is raised, and (B) shows when it is lowered. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially broken perspective view showing a first embodiment of a stirrer according to the present invention. It is sectional explanatory drawing of the state which closed the valve | bulb.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stirring tank 2 Stirring body 3 Stirring blade 4 Guide rod (guide mechanism)
5 Guide rod support 6 Switch 7 Guide rod support frame 8 Pump 9 Storage battery 10 Seat a Air W Stir fluid w Stir fluid in the stirrer

Claims (6)

  A stirring body that can rotate while moving up and down in a stirring fluid in a tank by buoyancy change, and has a mechanism that changes buoyancy by supplying and discharging a part of the stirring fluid to and from the stirring body, and a stirring body having a stirring blade And a guide mechanism for restraining movement of the stirrer in directions other than the vertical direction and the rotational direction.   2. The stirrer according to claim 1, wherein the stirring fluid is supplied and discharged by detecting a lifted position of the stirring body and driving a pump by a driving energy source provided inside the stirring body. .   The stirrer according to claim 2, characterized in that the raising / lowering position of the stirrer is detected by a switch protruding from the stirrer.   The stirrer according to claim 1, 2, or 3, wherein the drive energy source is a storage battery.   The stirrer according to claim 4, wherein charging to the storage battery is performed by generating electric power using a rotational force when the stirrer is raised and lowered.   The stirrer according to claim 1, 2, 3, 4 or 5, wherein the stirring fluid in the tank is stirred by discharging the stirring fluid inside the stirring body at the lowered position.

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