JP2549233Y2 - Stirring and mixing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring and mixing apparatus for mixing and solidifying a solidified material in a step of pumping soft mud such as excavated soil or dredged soil with high water content.

[0002]

2. Description of the Related Art At construction sites and civil engineering sites, soft mud such as excavated soil or dredged soil with high water content is generally pumped as raw mud to a location away from the site by a pumping pipe, and is separated from the site by a pressure pipe. Then, the mixture is stirred and mixed with the solidified material by a stirring and mixing device to perform a solidification treatment.

[0003]

However, in such a conventional processing method, the pumping step and the solidification processing step are performed independently, and it is necessary to separately install separate apparatuses. For this reason, equipment costs are high and a large space must be secured.Moreover, since an operator who manages the pumping process and an operator who manages the solidification process are required, the number of workers increases, and Has a disadvantage that a cycle gap is apt to occur between the pressure feeding step and the solidification processing step. The present invention has been made in view of the above circumstances,
SUMMARY OF THE INVENTION An object of the present invention is to provide a stirring and mixing apparatus capable of efficiently performing a solidification process with no variation in strength without securing a large space, reducing equipment costs and reducing the number of workers.

[0004]

According to the present invention, there is provided a housing having a predetermined length, an inflow port provided at one longitudinal end of the housing and connected to a pressure feed pipe, and the housing having a predetermined length. An outlet provided at the other end in the longitudinal direction of the housing, a solidified material ejecting portion for ejecting solidified material into the housing near the inlet, and an inflow port provided laterally in the housing in the longitudinal direction of the housing. A stirring blade that stirs and mixes the press-fitted raw mud and the solidified material, and a drive unit that rotationally drives the stirring blade, wherein the stirring blade has a rotation shaft and a narrow width radially outside the rotation shaft. The plate member is composed of a spirally wound blade body, and two stirring blades are provided so as to rotate at the same speed but in opposite directions.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is an overall side view including a pumping tube and a stirring and mixing device, FIG. 2 is a plan view of the stirring and mixing device, and FIG. 3 is a perspective view of the same.
It is pumped to the landfill 5 via the pumping pipe 3. The stirring and mixing device 7 according to the present invention is connected to the end of the feed pipe 3 and also serves as a part of the feed path for raw mud, as shown by the hatched portion in FIG. The stirring and mixing device 7 includes a housing 9 and two stirring blades 11 disposed in the housing 9 as shown in FIGS.

[0006] Two cylindrical portions 901 are provided in the housing 9 in parallel, the leading end of each tubular portion 901 is connected to the inflow pipe 15 via the inner wall 9A, and the rear end of each tubular portion 901 is connected. The front end of the inflow pipe 15 is detachably connected to the rear end of the feed pipe 3 via a flange via the inner wall 9B. Each stirring blade 11 is composed of a rotating shaft 21 rotatably supported by a bearing 19 and two blades 23 disposed around the rotating shaft 21. As shown in FIGS. 3 and 4, each of the blades 23 is formed by spirally bending a plate having a predetermined width with a large inner diameter.
Are held on the rotating shaft 21 via a plurality of supporting rods 25, respectively.
It is formed so that the stirring can be performed effectively and the resistance to the movement of the raw mud in the pumping direction becomes as small as possible.

In the vicinity of the inflow pipe 15, a driving device 31 for driving the stirring blade 11 to rotate and a solidifying material injection device 33 are additionally provided. The driving device 31 includes a motor 311 and a gear box 312, and the power of the motor 311 is taken out from the output shaft 313 of the gear box 312, and this power is transmitted to one of the stirring blades 11 via a pair of gears 314.
Each of the stirring blades 11 is transmitted to the other stirring blade 11 via a chain 315, and the two stirring blades 11 are configured to rotate in opposite directions and at the same rotation speed as indicated by arrows in FIG. In the figure, reference numeral 317 denotes a bracket for supporting the motor 311.

As shown in FIG. 1, the solidified material injection device 33 includes a solidified material plant 35 installed at an appropriate position, a pressure feeding hose 37 connected to the solidified material plant 35 side, and a solidified material plant 35 as shown in FIG. A solidified material injection section 39 connected to the end of the pressure feeding hose 37, a solidified material injection nozzle 41, and the like are provided. As shown in the enlarged sectional view of FIG. 5, the solidified material injection section 39 is attached to the inflow pipe 15 and the housing 4 in which the rotating shaft 21 is inserted.
O-rings 45 are respectively interposed between both ends of the housing 43 and the rotating shaft 21, and a closed space 47 is formed in the housing 9. Is supplied. And this closed space 47
A horizontal hole 49A is opened in the rotation shaft 21 portion located at
A vertical hole 49B is formed so as to communicate with the horizontal and horizontal holes 49A,
A horizontal hole 49C communicating with the vertical hole 49B is opened at a portion of the tubular portion 901 near the inflow pipe 15, and an injection nozzle 41 is attached to this opening.

[0009] Since the present embodiment is constructed as described above, the excavated soft mud such as excavated soil or dredged soil with high water content is pumped to the landfill 5 side by the pumping pipe 3. In the stage, it reaches the stirring and mixing device 7. Then, in the stirring and mixing device 7, the raw mud from the pressure feeding pipe 3 is fed into the housing 9 from the inflow pipe 15, and the solidified material is injected from the injection nozzle 41 to the raw mud in the housing 9. Then, the raw mud is pressure-fed to the outflow pipe 17 side while being stirred and mixed with the solidified material by the stirring blade 11 in the housing 9, sufficiently stirred and mixed, and discharged from the outflow pipe 17 to the landfill 5.

Therefore, according to this embodiment, since the solidification treatment is performed in the pressure feeding step, no cycle gap is generated, and the stirring and mixing is forcibly performed by the stirring blades 11, so that the solidification processing can be performed efficiently. Good quality improved soil with no variation in strength can be obtained. In addition, since the pumping step and the solidification processing step are performed in the same step, it is not necessary to separately install separate devices and to secure a large space as in the related art, so that equipment costs can be reduced and solidification processing can be achieved. The personnel and the pumping personnel can also serve concurrently, and the number of workers can be reduced.

[0011]

[Effect of the Invention] As is apparent from the above description, according to the present invention, the solidification treatment is performed in the step of feeding the raw mud, so that the solidification treatment with no variation in strength can be efficiently performed without securing a large space. It is possible to reduce the equipment cost and the number of workers.

[Brief description of the drawings]

FIG. 1 is an overall side view including a pressure feed pipe and a stirring and mixing device.

FIG. 2 is a plan view of a stirring and mixing device.

FIG. 3 is a perspective view of a stirring and mixing device.

FIG. 4 is a front view of a main part of the stirring and mixing device.

FIG. 5 is a cross-sectional view of a main part of a solidified material injection device.

[Description of Signs] 1 Pressure pump 3 Pressure tube 7 Stirring / mixing device 9 Housing 11 Stirring blade 15 Inflow tube 17 Outflow tube 21 Rotating shaft 23 Blade body 31 Drive device 33 Solidified material injection device

Claims (1)

(57) [Scope of request for utility model registration] A housing having a predetermined length; an inlet provided at one end in the longitudinal direction of the housing and connected to a pressure feed pipe; an outlet provided at the other end in the longitudinal direction of the housing; A solidified material jetting unit for jetting the solidified material into the housing near the inlet, and mixing and stirring the solidified material and the raw mud, which is provided in the housing in a longitudinal direction of the housing and is press-fitted from the inlet, and a stirring blade, and a driving unit for rotationally driving the stirring blade, the stirring blades and the rotary shaft, fine radially outward of the rotating shaft
A plate member having a width is formed of a spirally wound blade body, and the two stirring blades are provided in opposite directions at the same speed.
A stirring and mixing device , which is configured to rotate .