JP2013150941A - Stirring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely stir treated water to suppress precipitation and sticking of impurities in the treated water regarding the improvement of a stirring apparatus used in a process for purifying treated water that contains impurities such as sediment and sludge, like raw water taken in from a river, domestic and industrial sewage, etc.SOLUTION: A stirring apparatus includes a stirring blade 1 arranged in treated water that contains impurities, and stirs the treated water by rotating the stirring blade 1. The stirring apparatus also includes a rotation body 3 mounted to the stirring blade 1 and rotationally driven by a hydraulic motor 2.

Description

  The present invention relates to an improvement of a stirring device, and more particularly to a stirring device that suppresses precipitation and fixation of impurities in water to be treated.

  In general, a stirring device stirs water to be treated using a water flow generated by rotating a stirring blade disposed in the water to be treated.

  For example, the stirrers described in Patent Documents 1 to 3 are used in a process of purifying sewage, and a chemical such as a flocculant or a bactericide is mixed with water to be treated containing impurities such as earth and sand and sludge. The treated water is agglomerated and sterilized.

JP 2006-326377 A JP 2006-326378 A JP 2006-326379 A

  However, in the above-described conventional stirring apparatus, when impurities such as earth and sand and sludge settle and deposit in the stirring tank to form a solid matter, this solid matter obstructs the rotation of the stirring blade and requires dredging work. .

  Then, the objective of this invention is providing the stirring apparatus which can stir to-be-processed water more reliably than before and can suppress precipitation and fixation of an impurity.

  Means for solving the problems includes a stirring blade disposed in the water to be treated containing impurities, and is attached to the stirring blade in a stirring device that rotates the stirring blade to stir the water to be treated. A rotating body that is rotationally driven by a hydraulic motor.

  According to the present invention, by providing the rotating body attached to the stirring blade, it is possible to more reliably stir the water to be treated than before and suppress precipitation and fixation of impurities.

It is a top view which shows the attachment state of the stirring apparatus which concerns on one embodiment of this invention. FIG. 2 is a plan view showing a part of FIG. 1 enlarged and partially cut away. It is a perspective view which expands and shows the rotary body of the stirring apparatus which concerns on one embodiment of this invention.

  Hereinafter, a stirring device showing an embodiment of the present invention will be described with reference to the drawings. The same reference numerals used throughout the several drawings indicate the same parts.

  As shown in FIG. 1, the stirrer according to the present embodiment includes a stirring blade 1 disposed in water to be treated containing impurities, and rotates the stirring blade 1 to stir the water to be treated. And a rotating body 3 attached to the stirring blade 1 and driven to rotate by a hydraulic motor 2.

  Further, the stirrer according to the present embodiment is a process for purifying treated water containing impurities such as earth and sand and sludge, such as raw water taken from rivers and domestic and industrial sewage. Is used for stirring.

  Hereinafter, the stirrer according to the present embodiment will be described in detail. The stirrer is attached to a stirrer tank A that accommodates water to be treated, and stands up from the center of the stirrer tank A from a drive source (not shown). A drive shaft B that is rotated by the input of electrical energy, four stirring blades 1 that are arranged in the water to be treated and extend radially from the drive shaft B, and a hydraulic motor 2 that is attached to the stirring blade 1 And a rotating body 3 that is driven to rotate.

  And in this Embodiment, each said stirring blade 1 stands upright toward the advancing direction (arrow X). Each stirring blade 1 is provided with a plurality of mounting holes 10 penetrating through the thickness of the stirring blade 1 from the drive shaft side to the non-drive shaft side, and the hydraulic motor 2 and the rotating body are arranged in each mounting hole 10. 3 are attached respectively.

  Subsequently, as shown in FIG. 2, the rotating body 3 is attached to the stirring blade 1 via the holding member 4, and includes a rotating shaft 30 and a head portion 31 attached to an end of the rotating shaft 30. Consists of.

  The holding member 4 includes a connecting piece 40 that is fixed to the advancing direction (arrow X) side of the stirring blade 1, and a housing 41 that extends to the counter-traveling direction side of the connecting piece 40 and holds the hydraulic motor 2. It has. Further, a rotating shaft 30 is rotatably supported on the connecting piece 40 so that the head portion 31 faces the traveling direction, and an end portion of the rotating shaft 30 opposite to the head portion is an output shaft of the hydraulic motor 2. 20 and a coupling 5.

  Although not shown, the water pressure motor 2 rotates the output shaft 20 with the pressure of water flowing from the supply port to the discharge port to drive the rotating body 3, and includes a gear motor, a vane motor, a piston motor, and the like. A well-known configuration can be employed. The water supplied to the supply port is supplied from a supply source (not shown) installed outside the stirring tank A, but the water discharged from the discharge port is stirred even if it is returned to the supply source. It may be discharged into the tank A.

  Subsequently, as shown in FIG. 3, the head portion 31 of the rotating body 3 includes four reinforcing plates 6 a to 6 d extending radially from the approximate center of the rotating shaft 30 and an annular rotating shaft 30 formed inside. And an annular plate 7 to which the opposite ends of the respective reinforcing plates 6a to 6d are connected, and four pieces disposed obliquely from the annular plate 7 toward the tip of the rotating shaft 30. The head portion 31 is formed in a substantially conical shape, and the tip of the head portion 31 faces the advancing direction (arrow X) of the stirring blade 1.

  Further, in each of the inclined pieces 8a to 8d, the rotation direction (arrow Y) of the rotating body 3 and the surface 81 on the counter-rotation direction side of the surface 81 on the side of the rotation direction (arrow X) and the counter-travel direction side of the stirring blade 1 are compared. Is more widely set.

  Furthermore, in the present embodiment, the rotating body 3 and the holding member 4 are composed of strength members, and when the head unit 31 comes into contact with a fixed object formed by depositing and depositing impurities in the stirring tank A, The strength is set such that the fixed matter can be pulverized by the rotating head portion 31. Further, the hydraulic motor 2 is set so as to obtain a torque capable of crushing the fixed matter.

  Next, the function and effect of the stirrer according to the present embodiment will be described. In this embodiment, since the stirring device includes the stirring blade 1 and the rotating body 3 attached to the stirring blade 1, the water to be treated is more reliably stirred than in the prior art to precipitate and fix impurities. Can be suppressed.

  Further, since the rotating body 3 is driven by the hydraulic motor 2, there is no fear that the water to be treated is contaminated with water discharged from the hydraulic motor 2.

  Moreover, in the conventional stirring apparatus not provided with the rotating body 3, when the stirring blade stops rotating due to collision with a fixed object in the stirring tank A, the dredging work of the stirring tank A is necessary. In the embodiment, since the fixed object can be pulverized by the rotating body 3 attached to the stirring blade 1, the dredging work is not required.

  Further, in the present embodiment, the rotating body 3 includes a rotating shaft 30 connected to the output shaft 20 of the hydraulic motor 2 and a head portion 31 attached to the end of the rotating shaft 30. Since the head portion 31 is arranged so as to face the advancing direction (arrow X) of the stirring blade 1, the fixed matter in the moving direction of the stirring blade 1 is pulverized by the rotating body 3, and the fixed matter rotates the stirring blade 1. Can be prevented.

  Further, in the present embodiment, the head portion 31 is formed in a plurality of reinforcing plates 6a to 6d extending radially from the rotating shaft 30, and the rotating shaft 30 penetrates inside and the reinforcing plates 6a to 6d are formed inside. And the plurality of inclined plates 8 a to 8 d that are arranged obliquely from the annular plate 7 to the tip of the rotating shaft 30.

  Further, in each of the inclined pieces 8a to 8d, the rotation direction (arrow Y) of the rotating body 3 and the surface 81 on the counter-rotation direction side of the surface 81 on the side of the agitation blade 1 in the direction of movement (arrow X) and the direction of counter-rotation direction. Therefore, when the head unit 31 is rotated, the water to be treated can be efficiently stirred and the fixed matter can be pulverized.

  While the preferred embodiment of the present invention has been described above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above-described embodiment, the stirring device includes four stirring blades 1, and three rotating bodies 3 and hydraulic motors 2 are attached to each stirring blade 1. The number of attachments of the body 3 and the hydraulic motor 2 can be appropriately changed. When a plurality of stirring blades 1 are provided, there may be stirring blades to which the rotating body 3 and the hydraulic motor 2 are not attached.

  Further, in the above embodiment, the rotating body 3 can stir the water to be treated and pulverize the fixed matter. May be pulverizable.

  Moreover, in the said embodiment, although the said rotary body 3 has faced the advancing direction (arrow X) of the stirring blade 1, the direction and shape of the rotary body 3 can also be changed suitably.

  Moreover, in the said embodiment, although the rotating shaft 30 of the rotary body 3 is connected with the output shaft 20 of the hydraulic motor 2 via the coupling 5, the head part 31 is attached to this output shaft 20, and an output is carried out. The shaft 20 may function as the rotating shaft 30 of the present embodiment.

  In the above embodiment, the drive shaft B to which the stirring blade 1 is attached rotates by receiving electric energy supplied from a drive source (not shown), but generates a propulsive force when the rotating body 3 rotates. The stirring blade 1 may be rotated by this propulsive force.

A Stirring tank B Drive shaft 1 Stirring blade 2 Hydraulic motor 3 Rotating body 4 Holding member 5 Couplings 6a to 6d Reinforcement plate 7 Annular plate 8a to 8d Inclined plate 10 Mounting hole 30 Rotating shaft 31 Head part 40 Connecting piece 41 Housing

Claims (4)

In a stirrer equipped with a stirring blade disposed in the water to be treated containing impurities, and stirring the water to be treated by rotating the stirring blade,
A stirring device comprising a rotating body attached to the stirring blade and driven to rotate by a hydraulic motor.   The stirring device according to claim 1, wherein the rotating body is capable of pulverizing a fixed substance formed by depositing and depositing the impurities in a stirring tank containing the water to be treated.   The rotating body includes a rotating shaft connected to the output shaft of the hydraulic motor, and a head portion attached to an end portion of the rotating shaft, and the head portion faces the traveling direction of the stirring blade. The stirring device according to claim 1, wherein the stirring device is arranged. A plurality of reinforcing plates in which the head portion extends radially from the rotation shaft, an annular plate formed in an annular shape, the rotation shaft penetrating inside, and an annular plate connected to a counter-rotation shaft side end of each reinforcing plate; It consists of a plurality of inclined plates arranged obliquely from the annular plate to the tip of the rotating shaft,
4. Each of the inclined plates is characterized in that the surface of the rotating body on the rotating direction and the counter rotating direction side is set wider than the surface of the stirring blade on the moving direction and counter moving direction side. A stirrer described in 1.

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