JP2988824B2 - Stirrer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer for stirring fly ash inside a heater for treating fly ash generated in, for example, an incinerator.

[0002]

2. Description of the Related Art Conventionally, a stirrer for stirring fly ash inside a heater for treating fly ash generated in a waste incinerator, for example, is shown in FIGS. 3 and 4. FIG. This is achieved by welding the base end of the stirring blade support member 21 to the surface of the stirring rotary shaft 20 rotatably provided inside the cylindrical heater, and stirring the stirring blade support member 21 at the tip end thereof. The blades (paddles) 22 are fixed, and the fly ash is stirred by the stirring blades 22 by rotating the rotation shaft 20 for stirring.

[0003]

In the above-described conventional stirring blade device, the rotating shaft 20 for stirring and the stirring blade 22 wear or corrode when they come into contact with powder such as fly ash. Repair work is required at any time. And these repairs are dealt with by welding.

[0004] However, in repairing by welding, residual thermal distortion occurs in the stirring rotary shaft 20, so that this repairing operation is not easy. In some cases, the entire device needs to be replaced, and this replacement requires a lot of time.

Accordingly, an object of the present invention is to provide a stirring device which can solve the above-mentioned problems.

[0006]

Means for solving the problems of the present invention include a rotating shaft for stirring provided rotatably inside a cylindrical body, and an arc-shaped rotating shaft mounted on the surface of the rotating shaft for stirring. Mounting body, a stirring blade support member having a base end erected on the plate surface of the mounting body, and a stirring blade provided at a distal end of the stirring blade support member for stirring the object to be stirred. A first elongated hole long in the axial direction of the stirring rotary shaft is formed in the plate surface of the mounting body, and a second elongated hole long in the axial direction of the stirring rotary shaft is formed in the plate surface of the stirring blade. The mounting body is detachably attached to the rotating shaft for stirring via a fixture inserted into the first slot, and the stirring blade is detachable from the stirring blade support member via a fixture inserted into the second slot. It is said that.

[0007]

In the above-mentioned means for solving the problems, the mounting body is fitted around the rotary shaft for stirring, and the mounting member is fixed to the rotary shaft for stirring by inserting a mounting tool into the first elongated hole and tightening. The stirrer blade is fixed to the stirrer blade support member by inserting the fitting into the hole and tightened to assemble the stirrer. The object to be stirred introduced into the cylinder is stirred by the stirrer blade by rotating the stirring shaft. However, in the case where the mounting body is worn or corroded by the stirring operation, or the stirring blade is worn or corroded, the mounting fixture is removed from the first or second long hole and another mounting body or the stirring blade is removed. To be replaced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the stirring device of the present invention will be described below with reference to a cutaway side view of FIG. 1 and a cutaway front view of FIG.

A stirrer according to an embodiment of the present invention is for stirring the fly ash inside a cylindrical heater 1 for treating fly ash generated in an incinerator. A rotary shaft 2 for fly ash stirring is rotatably provided inside the heater 1, and a plurality of sets of a pair of arc-shaped half-split mounting bodies 3 </ b> A and 3 </ b> B which are fitted on the surface of the rotary shaft 2 for stirring are provided. A plurality of first long holes 4 which are provided at 90 ° intervals in the circumferential direction of the stirring rotary shaft 2 and which are long in the axial direction of the stirring rotary shaft 2 are formed on the plate surfaces of the mounting bodies 3A and 3B. And the mounting body 3A,
3B is a first bolt (attachment) 5 to be inserted into the first slot 4
And is detachably attached to the rotating shaft 2 for stirring.

At the center of the plate surface of each of the mounting bodies 3A and 3B, a base end of a stirring blade support member 6 is erected in the radial direction of the stirring rotary shaft 2 by welding or the like, and the stirring blade support member is provided. 6, a reinforcing member 6a is provided at the base end, and a stirring blade 7 is disposed at a distal end of the stirring blade support member 6. The stirring blade 7 is long on the plate surface of the stirring blade 7 in the axial direction of the rotary shaft 2 for stirring. A pair of second long holes 8 are formed, and the stirring blade 7 is detachably attached to the stirring blade support member 6 via a second bolt 9 (attachment) inserted into the second long hole 8.

At the abutting portion of each of the mounting bodies 3A and 3B, abutting members 10a and 10b which are bent in the radial direction of the agitating rotary shaft 2 are formed, and the abutting members 10a and 10b are connected to each other. Are fixed by bolts 11.

In the above configuration, when assembling the stirrer, the butting member 10 of the pair of attachments 3A and 3B is used.
a and 10b are fitted to the agitating rotary shaft 2 so that they abut against each other, and the butting members 10a and 10b are tightened and fixed with bolts 11 and the first bolts 5 are inserted into the first elongated holes 4. Tightening, fixing the rotating shaft 2 for stirring and the mounting bodies 3A, 3B, inserting the second bolt 9 into the second long hole 8 of the stirring blade 7, and fixing the stirring blade 7 to the stirring blade support member 6. I do.

The mounting members 3A and 3B adjacent to each other in the axial direction of the stirring rotary shaft 2 are arranged at 90 ° intervals so that the stirring blades 7 mounted on the stirring blade support members 6 are alternately positioned. It is arranged to be shifted in the direction.

In the stirrer thus assembled, the fly ash introduced into the heater 1 is stirred by the stirring blades 7 by rotating the stirring rotary shaft 2, and the stirred fly ash is shown in the drawing. It is transferred to the next processing equipment such as a cooler.

When the inside of the heater 1 is heated, thermal expansion may occur in the attachments 3A and 3B, the stirring blade 7, and the like. 4, and the stirring blade 7 is provided with a stirring blade support member 6.
Are mounted via the second long holes 8 respectively.
Compatible with expansion and contraction due to thermal expansion.

When the stirring blade 7 is worn or corroded by the stirring operation, the second bolt 9 is removed to replace it with another stirring blade 7, and the mounting members 3A and 3B are worn. In case of corrosion, the first bolt 5 is removed and replaced with another mounting body 3A, 3B.

The mounting bodies 3A and 3B and the stirring blade 7
Is carried out through the first slot 4 and the second slot 8, so that the attachments 3A and 3B and the stirring blade 7 are attached to the first slot 4 and the second slot 8 with the same length. It can be performed flexibly while adjusting the position within the range.

As described above, according to the embodiment of the present invention, when the stirring wing 7 and the attachments 3A and 3B are worn or corroded by fly ash, the first bolt 5 or the second bolt 9 is moved to the first length. Repair work can be performed by removing from the hole 4 or the second long hole 8 and exchanging the stirring blade 7 and the attachments 3A and 3B. In this case, the stirring blade 7 and the attachment 3A need repairing.
Since only the 3B needs to be replaced, it is not necessary to replace the entire device, so that the repair work can be performed extremely easily and can be performed in a short time.

Further, since the repair is not performed by welding but is performed by replacing a member requiring repair, thermal agitation does not occur on the stirring rotary shaft 2. Further, since the rotating shaft 2 for stirring is externally fitted by the attachment bodies 3A and 3B, it is possible to prevent fly ash from being worn or corroded by hitting the rotating shaft 2 for stirring, and the length of the rotating shaft 2 for stirring can be prevented. Life can be extended.

[0020]

As is clear from the above description, the present invention
The mounting member is removably attached to the surface of a stirring rotary shaft rotatably provided inside the cylindrical body via a mounting tool for inserting the mounting member into a first elongated hole formed in the plate surface. The stirring blade is detachably attached to the tip of the stirring blade support member erected on the surface via a fixture for inserting the stirring blade into the second long hole formed in the plate surface. In the event of wear or corrosion, it can be repaired by removing the fittings and replacing the fitting or stirring blade that needs repair with another fitting or stirring blade, thus replacing the entire device as before. The repair work can be performed extremely easily and can be performed in a short time, and since the repair work is not performed by welding, no thermal distortion occurs in the rotating shaft for stirring.

[Brief description of the drawings]

FIG. 1 is a cutaway front view of a stirring device according to an embodiment of the present invention.

FIG. 2 is a cutaway side view of the same.

FIG. 3 is a front view of a stirring device showing a conventional example.

FIG. 4 is a cutaway side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater 2 Stirring rotary shaft 3A Mounting body 3B Mounting body 4 First long hole 6 Stirring blade support member 7 Stirring blade 8 Second long hole 10a Butting member 10b Butting member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-11679 (JP, A) JP-A-54-37376 (JP, A) JP-A-63-238306 (JP, A) 114770 (JP, U) Real opening 63-54927 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F23G 5/28 ZAB B01F 7/04 B09B 3/00 ZAB

Claims (1)

(57) [Claims] An agitating rotary shaft rotatably provided inside a cylindrical body, an arc-shaped mounting body mounted on a surface of the agitating rotary shaft, and a base end portion on a plate surface of the mounting body. An agitating blade support member provided upright, and a stirring blade provided at a tip end of the agitating blade support member for agitating an object to be agitated. A long slot in the axial direction of the stirring rotary shaft is formed on the plate surface of the stirring blade, and the mounting body is provided with a fitting inserted into the first slot. Wherein the stirring blade is detachably attached to the stirring blade supporting member via a fixture inserted into the second elongated hole.