JP4417290B2 - Stirrer - Google Patents

Description

  The present invention relates to a stirrer, and in particular, is a stirrer that efficiently stirs a stirring fluid (liquid) such as sewage that is raised and lowered by changing the specific gravity of a stirrer and accommodated in a stirring tank. The present invention relates to a stirrer in which necessary power to be changed is supplied in a non-contact manner from the fixed side to the stirrer side.

  Conventionally, in sewage treatment, construction wastewater treatment, etc., when processing fluid such as sewage containing solid impurities such as earth and sand, sludge, for example, when treating sludge water, this sludge water (hereinafter referred to as “stir fluid”) And a chemical agent such as an aggregating agent and a bactericidal agent are put into a stirring tank and stirred by a stirrer to perform necessary agglomeration and sterilizing treatments.

  By the way, the stirrer obtains electric energy from the outside through a power supply cable, rotates a stirring blade through a driving body such as a motor, and circulates the stirring fluid in the tank using the water flow generated thereby. Thus, the entire tank is forcibly stirred. In this case, the power feeding cable may become entangled with the stirrer and the like due to the rotation of the stirrer, and the power feeding cable may be disconnected and power feeding may be disabled, or the stirring blade may be damaged.

  For this reason, without using a power supply cable for the required power for the stirrer, a power storage type power supply device that has the required power for stirring power in the stirrer, a drive motor, and the like are arranged in the stirrer. For this reason, since there is a limit to the amount of power supplied by a power storage type power supply device such as a storage battery (battery), the stirrer must be stopped and charged periodically, and the stirrer can be used continuously for a long time. There was a problem that I could not.

  In view of the above-described problems of the conventional stirrer, the present invention uses a power supply cable for power necessary for stirring the agitated fluid stored in the stirring tank by raising and lowering the stirrer by changing the specific gravity. It is another object of the present invention to provide a stirrer that can be driven for a long time by supplying power without contact each time the stirrer floats from the fixed side to the stirrer side.

  In order to achieve the above object, the stirrer of the present invention is a stirrer that stirs the stirring fluid in the stirring tank while moving up and down due to a change in specific gravity, and introduces or discharges the stirring fluid in the stirring tank into the stirring body. The power source for driving the pump that changes the specific gravity of the stirrer is configured by a storage battery provided in the stirrer, and power can be supplied in a non-contact manner from the fixed side every time the stirrer floats It is characterized by.

  In this case, a stirring blade for rotation drive formed so as to rotate by the resistance by the stirring fluid received when the stirring body moves up and down in the stirring fluid in the stirring tank is configured to protrude from the outer periphery of the stirring body. Can do.

  Further, the stirring body can be a tank shape that can supply and discharge the stirring fluid to and from the stirring body, and can be guided up and down by a guide rod penetrating the stirring body.

  In addition, an electrode that supplies power to the stirrer in a non-contact manner with the fixed electrode, and a stopper that is formed so that both the stirrer-side and fixed-side electrodes face each other when the stirrer floats are disposed. be able to.

  Further, the stopper can be formed in a tapered shape along the rotation direction of the stirring member.

  In addition, the locking tool provided at the lower end of the guide bar that guides the raising and lowering of the stirring body can be hooked with the locking groove formed on the lower surface of the stirring body so that the stirring body can be pulled up from the stirring tank together with the guide bar. can do.

  According to the stirrer of the present invention, the stirrer is configured to stir the stirring fluid in the stirring tank while moving up and down due to the change in specific gravity, and the stirring fluid is introduced into or discharged from the stirring tank. Operation of the agitator by configuring the power supply for driving the pump to change the specific gravity with a storage battery provided in the agitator and supplying power from the fixed side in a non-contact manner every time the agitator floats Since the stirrer that moves up and down can be stopped at a fixed position by the stirrer side and fixed side stoppers each time it floats, both the stirrer side and fixed side electrodes face up and down and the storage battery with a built-in stirrer is induced by the induced current. Since the power supply can be charged by the power supply, the stirrer can be operated for a long time, and the power supply cable or the like is not exposed, so that it is possible to prevent a failure due to entanglement of dust or the like.

  In addition, by configuring the stirring blade for rotation drive formed so as to rotate by the resistance by the stirring fluid received when the stirring body moves up and down in the stirring fluid in the stirring tank, the outer periphery of the stirring body is configured to project, When the stirrer moves up and down due to the change in specific gravity, it rotates due to the resistance by the stirring fluid, and the rotation direction is also automatically switched, so that the stirring fluid can be efficiently stirred throughout the tank. it can.

  Moreover, the specific gravity change for raising and lowering the stirring body is made into a tank shape in which the stirring fluid can be supplied and discharged to the inside of the stirring body, and the stirring body is led up and down by being guided by a guide rod penetrating the stirring body. Can be performed by a simple method of supplying and draining a stirring fluid.

  In addition, an electrode that supplies power to the stirrer in a non-contact manner with the fixed electrode, and a stopper that is formed so that both the stirrer-side and fixed-side electrodes face each other when the stirrer floats are disposed. Thus, since the stirrer stops at a fixed position only when the stirrer floats, both the stirrer side and the fixed side electrodes face each other up and down, and the power supply and charging to the stirrer side by the induced current can be performed reliably. it can.

  In addition, by forming the stopper in a tapered shape along the rotation direction of the stirrer, the stirrer floats while rotating, and when it reaches a fixed position, the stopper automatically positions and stops. Further, non-contact power feeding between both electrodes facing up and down can be performed easily and automatically.

  In addition, the locking tool provided at the lower end of the guide bar that guides the raising and lowering of the stirring body can be hooked with the locking groove formed on the lower surface of the stirring body so that the stirring body can be pulled up from the stirring tank together with the guide bar. By doing so, the stirrer can be easily pulled out of the agitation tank at the time of maintenance, equipment failure, etc., so failure repair and inspection can be easily performed without discharging the agitation fluid in the agitation tank. .

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

  1 to 5 show an embodiment of the stirrer of the present invention.

  In the treatment of sewage treatment, construction wastewater, etc., a stirring fluid W such as sludge water containing solid impurities such as earth and sand and sludge is supplied into the stirring tank 1 having the required shape and internal volume, and a flocculant Then, a chemical such as a bactericidal agent is added, and the stirrer A is moved up and down in the agitation tank to perform agitation and sterilization.

  The stirrer A disposed in the stirring tank 1 containing the stirring fluid W is configured such that a guide rod disposed so as to be substantially perpendicular to the central portion of the stirring tank 1 passes through the stirring tank 1. A cylindrical tank-shaped stirring body 2 having a hollow inside is configured so as to be led up and down (floating and falling) by being guided by the guide rod by itself by changing the specific gravity inside the stirring body.

  The agitation tank 1 is not particularly limited. For example, as shown in FIG. 1, the agitation fluid W to be contained can be efficiently agitated such as a cube having a required internal volume, a rectangle, or a circle. Although it has a shape that can be performed and is omitted in the drawing, it is provided with a supply means for supplying the stirring fluid W for stirring into the stirring tank 1 as necessary, and a discharge means for discharging the treated water after stirring. .

  In the cylindrical tank-shaped stirring body 2, the specific gravity is changed by supplying and discharging the stirring fluid W. Although this is not particularly limited, for example, the stirring fluid W is supplied and discharged. A pump, a solenoid valve connected to the discharge port, and a storage battery (both not shown) for supplying power to the pump and the solenoid valve, thereby providing a part of the stirring fluid W stored in the stirring tank. Part is taken in and out of the stirring body 2, that is, the stirring fluid W is sucked and introduced into the tank-shaped stirring body 2 to increase the specific gravity of the stirrer A, and the stirring tank 1 is naturally lowered by its own weight. On the contrary, the agitating fluid W is discharged from the agitator 2 so that the specific gravity of the agitator A is reduced to control the ascending operation (floating / sinking).

  Further, the stirrer 2 is formed so that a through hole 21 is formed in the central portion of the stirrer body, and the guide rod 3 is penetrated into the through hole 21. The guide rod 3 restrains the movement of the stirring body 2 in a direction other than the vertical direction (lifting direction) and the rotation direction, which is suspended and supported by the guide rod support body 4 disposed on the upper portion of the stirring tank 1, The lower end is a pointed tip 32 so that it can be supported at a fixed position on the inner bottom of the stirring tank 1, and a ring-shaped locking tool 31 is fixed in the vicinity of the lower end, and the guide bar 3 is stirred via the guide bar support 4. When it is further pulled up, the engaging member 31 is hooked so as to fit into a recess 22 formed on the lower surface of the stirring body 2 so that the stirring body 2 is pulled up together.

Further, the stirrer 2 is not particularly limited. For example, the positions of the electrode 5 for supplying power to the top surface in a non-contact manner and the fixed side electrode on which the electrode is disposed on the fixed side are up and down. And a stopper 6 for restricting them so as to coincide with each other.
Both the electrode and the fixed side electrode are waterproofed, and the stirrer 2 is placed at a predetermined position so that an induced current flows between the electrode 5 and the fixed side electrode 51 disposed on the lower surface of the guide rod support 4. When ascending to, face up and down.
Further, the stopper 6 is paired with the stirrer side 61 and the guide bar support side 62, and as shown in FIGS. 2 and 3, both of them form a spiral taper (wedge shape) along the rotation direction of the stirrer. The stirrer-side stopper 61 that is formed in this manner and that floats while rotating is brought into contact with the stopper 62 on the guide rod support side and stops at a fixed position.

Further, the stirrer 2 is not particularly limited to the outer periphery of the stirrer 2 as shown in FIG. 1 and FIG. 3. For example, as shown in FIG. A stirring blade 7 for generating a rotational driving force is provided so as to protrude.
Thereby, when the stirring body 2 moves up and down by changing the specific gravity by supplying water to the inside or by draining from the inside, the stirring body 7 receives the resistance force of the stirring fluid to The direction is rotated forward or counterclockwise.

The stirring tank 1 is stirred by the lifting and lowering operation of the stirring body 2 and the rotation operation by the stirring blade 7. In this case, instead of the stirring blade 7, a plurality of nozzles (not shown) are provided on the outer peripheral surface of the stirring body 2. ) In a radial direction, and stirring may be performed with a jet that discharges the stirring liquid from the inside of the stirring body 2. The stirring method of this stirring liquid is not limited.
Further, when the stirring body 2 floats, if the stirring blade 7 is at the water surface position of the stirring tank 1, the scum floating on or near the water surface by the rotation of the stirring body 2 is crushed by the rotational force of the stirring blade 7. can do.

Next, the operation of the stirrer A will be described.
When a predetermined amount of the agitating fluid W is supplied into the agitation tank 1, the agitation body 2 is in a state of being floated to the water surface position in the agitation tank 1, as shown in FIG. In this state, the stopper 61 on the stirrer side comes into contact with the stopper 62 on the guide bar support side so that the stirrer 2 stops at a fixed position, and the stirrer side electrode 5 and the fixed side electrode 51 on the guide bar support side An induced current flows between the electrodes 5 and 51 facing up and down, and is fed in a non-contact manner, and is charged in a built-in storage battery.
Then, in this floating state, a part of the stirring fluid W is introduced into the stirring tank 1 by driving the pump in the stirring body 2 with power supplied from the storage battery or releasing the electromagnetic valve. The air a in the stirring body is compressed according to the amount of the fluid w introduced into the body. By contracting the air in the stirrer 2, the weight mixing ratio between the air (gas) a and the fluid w is changed.
As a result, the weight ratio of the stirring fluid increases and the average specific gravity decreases, so that the specific gravity of the stirring body 2 increases, and the stirring body 2 descends along the guide rod 3 in the stirring tank 1. The operation of the pump when the stirring body 2 is lowered is supplied with necessary power from the storage battery. At this time, when the stirring blade 7 is provided on the outer peripheral surface of the stirring body 2, the stirring blade 7 receives resistance of the stirring fluid as the stirring body 2 is lowered. The stirring body 2 rotates counterclockwise and the inside of the stirring body 2 is stirred.

When the agitator 2 reaches the bottom of the tank, a discharge pump that discharges the fluid w in the agitator 2 by the action of a sensor or the like provided at the lower part of the agitator starts to be powered by the storage battery and operates. Is discharged into the stirring tank 1.
At this time, the jet fluid discharged from the fluid w is used to further stir the stirring fluid W in the stirring tank and at the bottom of the tank.
The driving of the pump for discharging the fluid w can be stopped when a time set in advance by a timer elapses.

  The discharge of the fluid w in the stirring body 2 causes the air a that has been compressed and contracted in the stirring body 2 to expand again, and the specific gravity of the stirring body 2 changes, that is, the specific gravity decreases. For this reason, the buoyancy of the stirrer 2 increases, and the buoyancy acts on the stirrer 2 so that the stirrer 2 rises along the guide rod 3 while rotating clockwise in the stirrer 1. . And even if the stirring body 2 is in the process of rising, the pump stops when the discharge of the fluid w in the stirring body 2 is completed, and the rising of the stirring body 2 is continued, and it rises while rotating without power. .

Further, when the stirring body 2 rises along the guide rod 3 and rises to a predetermined position on the water surface, and the stirring blade 7 is at the water surface position, the scum floats near the water surface or near the water surface by the rotation of the stirring body 2. Is crushed by the stirring blade 7.
In this way, by repeating the switching of the raising / lowering operation of the stirring body 2 and the switching action of the rotation direction, the stirring fluid is changed by the raising / lowering operation and / or rotation of the stirring body 2 while the stirring body 2 is rising and lowering. It can stir with the stirring blade 7, and can uniformly stir the whole inside of a tank with high efficiency.

  As mentioned above, although the stirrer of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure can be changed suitably in the range which does not deviate from the meaning. It can be done.

  The stirrer of the present invention is a stirrer that stirs the stirring fluid in the stirring tank while moving up and down due to a change in specific gravity, and changes the specific gravity of the stirring body by introducing or discharging the stirring fluid in the stirring tank. The pump drive power supply is composed of a storage battery provided in the stirring body, and has the property that power can be supplied in a non-contact manner from the fixed side every time the stirring body floats. In addition to being suitable for agitation in reaction tanks (anaerobic tanks or oxygen-free tanks) in treatment plants, for example, dam lake agitation, chemical reaction tank agitation, tank bottom condition sensing machine (sensing at the tank bottom) The data can be used by a person to confirm the data above the liquid).

It is a front longitudinal cross-sectional view which shows one Example of the stirrer of this invention. It is an external appearance perspective view of the stirring body upper part vicinity. It is a side view of the vicinity of the upper part of the stirring body. It is an external appearance perspective view of a stirring body. It is explanatory drawing at the time of stirring body raising.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stirring tank 2 Stirring body 3 Guide rod 4 Guide rod support body 5 Stirring body side electrode 51 Fixed side electrode on the guide rod support side 61 Stopper on the stirring body side
62 Stopper on the guide rod support side 7 Stirrer blade A Stirrer a Air W Stir fluid w

Claims (6)

  A stirrer that stirs the agitating fluid in the agitation tank while moving up and down due to a change in specific gravity, for driving a pump that changes the specific gravity of the agitator by introducing or discharging the agitating fluid in the agitation tank A stirrer characterized in that a power source is constituted by a storage battery provided in a stirring body, and power can be supplied in a non-contact manner from the fixed side every time the stirring body floats.   It is characterized in that a stirring blade for rotation drive formed so as to be rotated by a resistance by the stirring fluid received when the stirring body moves up and down in the stirring fluid in the stirring tank is configured to protrude from the outer periphery of the stirring body. The stirrer according to claim 1.   The stirrer according to claim 1 or 2, wherein the stirrer has a tank shape capable of supplying and discharging a stirring fluid to and from the stirrer, and is guided up and down by a guide rod penetrating the stirrer. .   An electrode that feeds power to the stirrer in a non-contact manner with the fixed electrode, and a stopper that is formed so that both the stirrer-side and fixed-side electrodes face each other when the stirrer floats are disposed. The stirrer according to claim 1, 2, or 3.   The stirrer according to claim 1, 2, 3, or 4, wherein the stopper is formed in a tapered shape along the rotation direction of the stirrer.   The locking tool provided at the lower end of the guide bar that guides the raising and lowering of the stirring body is hooked with the locking groove formed on the lower surface of the stirring body, and the stirring body can be pulled up from the stirring tank together with the guide bar. The stirrer according to claim 1, 2, 3, 4 or 5.

Images