JPH08164330A - Cylindrical mixer for separation of muddy water - Google Patents

Abstract

PURPOSE: To provide a mixer for efficiently mixing and stirring waste muddy water. CONSTITUTION: A cylindrical mixer for separation of muddy water is provided with a rotary shaft 3 which is arranged and fixed plural numbers of ribbon screw blades 4 fixed with a spacing between the rotary shaft 3 and a cylindrical case 6 and of baffles 5, consisting of four sheets, attached with a twist in the shaft direction, in the shaft direction of the rotary shaft with a specified spacing in the center of a cylindrical case 6 rotatably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixer for mixing and stirring fluids and the like, and more particularly to a mixer for separating industrial waste muddy water into water and muddy particles.

[0002]

2. Description of the Related Art With the increase of environmental problems, the processing of industrial waste has become more severe. For example, when excavating the ground for civil engineering and construction work, in order to smoothly rotate the excavator, a large amount of mud containing suspension agents such as bentonite is injected into the excavation hole. The method of treating muddy water is extremely difficult and has become a problem in the industry.

For this reason, in recent years, a technical means for applying a separating agent which is a functional polymer liquid to muddy water and mixing and stirring this into muddy water to separate it into water and mud particles has been attracting attention. . This treatment is performed by a chemical method, and after separating into water and mud particles, it is possible to easily separate into water and mud particles by a filter without applying pressure, and it is solidified. 1/3 to 1/5 mud particles
It is possible to reduce the volume to 0, and it is very much noted that it can be easily disposed of.

[0004]

A mixer is used to mix and stir the separating agent and the muddy water.
Mud particles in the mud water coagulate and contract as flocs by the separating agent, and these particles accumulate between the blades in the mixer that perform the stirring action, which makes continuous operation of the mixer impossible. In addition, in order to remove the accumulated flocs, the structure of the blades is complicated and therefore cannot be easily removed. Furthermore, the mixer needs to be compact so that it can be carried to the construction site. The present invention has been made in view of such a point, and an efficient cylindrical mixer for separating muddy water, in which flocs are less likely to accumulate, and can be easily cleaned even if the flocs are accumulated in the mixer. The purpose is to provide.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a ribbon screw blade mounted with a space between it and a rotary shaft, and a baffle plate composed of four sheets mounted with a twist in the axial direction. A cylindrical mixer, wherein a plurality of rotating shafts mounted side by side in the rotating shaft direction at fixed intervals are rotatably arranged in the center of a cylindrical case. In addition, the cylindrical mixer is formed by forming elongated openings in the axial direction in the upper and lower sides of a cylindrical case, and covering the openings with an outer case having a semi-cylindrical cross section from above and below.

[0006]

[Function] The muddy water added with the separating agent is mixed in the mixer.
Two streams are sent from above and below the agitating ribbon screw blade to generate a turbulent flow behind the ribbon screw blade, and further collide with a baffle provided after the ribbon screw blade to amplify the turbulent flow and increase efficiency. Good mixing and stirring is performed. In addition, in the baffle, mud water with a separating agent is sent as two flows, a flow that passes over this and a flow that flows through the space between the adjacent baffles, and here also the turbulence is behind the baffle. Since a flow is generated, efficient mixing and stirring is performed. Further, since turbulent flow is generated in the muddy water, it is less likely that muddy particles will be accumulated on the rear side of the ribbon screw blade or the baffle plate. Further, since large cleaning openings are formed above and below the case of the stirring unit, the accumulated mud particles can be easily cleaned by flowing water from the upper side.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view showing the configuration of a cylindrical mixer. That is, the cylindrical mixer main body 1 supported by the left and right support members 11 and 12 on the base plate 10 has a rotary shaft rotatably supported by a shaft support portion 17 having a bearing in a cylindrical case 6. 3 is provided, a side plate 13 provided with an inlet 14 for introducing a separating agent is fitted to the left end of the case 6, and a hole for inserting the rotary shaft 3 is provided at the center of the side plate 13. Formed,
A packing 9 is provided here to be liquid-tight. On the other hand, a side plate 15 having a bearing 16 for supporting the rotating shaft 3 is attached to the right end portion of the case 6, an inlet pipe 7 for sending muddy water is provided on the left side of the case 6, and an inside of the mixer body 1 is provided on the right side. A discharge pipe 8 for discharging the mixture of water and mud particles mixed and stirred in (1) is provided. The rotary shaft 3 is formed so as to rotate the driving force of the motor 2 via the speed reduction mechanism 18.

The rotating shaft 3 in the case 6 is formed to have a quadrangular cross section, and as shown in the front view of FIG. 2 and the side view of FIG.
And has a space 4a between it and the rotary shaft 3, and is fixed to the three pins 25 planted on the rotary shaft 3 by welding. Further, on the right side of the blade 4, as shown in the front view of FIG. 4 and the side view of FIG. 5, four baffles 5 are axially twisted on the four sides of the rotary shaft 3 at a pitch of 9 mm, for example. In addition, a space 5a is provided between adjacent baffle plates 5 and is fixed. A plurality of blades 4 and baffle plates 5 are provided at regular intervals in the longitudinal direction of the rotating shaft to form a cylindrical mixer.

Therefore, the muddy water and the separating agent sent from the introduction pipe 7 and the injection port 14 are rotated and rotated by the motor 2 in the mixer body 1, mixed and stirred by the blades 4 of the ribbon screw in the mixer main body 1, and are sequentially moved to the right side. Sent out. At this time, the mixed fluid of the muddy water and the separating agent flows between the outer side of the blade 4 and the case 6 at the blade 4 of the ribbon screw and the gap between the rotary shaft 3 and the blade 4 of the ribbon screw. It is divided into two flows, that is, a flow passing through 4a, and is sequentially sent out while causing a turbulent flow to the right side. These flows then strike the baffle 5 and the turbulence is further amplified. Further, in the baffle plate 5 portion, the fluid is sent to the right side while generating a turbulent flow as two flows, that is, a flow that overcomes the baffle plate 5 and a flow that passes through the space 5a between the adjacent baffle plates 5. Thus, the mud water and the separating agent flow are sequentially passed through the plurality of ribbon screw blades 4 and baffle plates 5 provided at regular intervals in the mixer main body 1 while being stirred and mixed, and the mud and the coagulated mud are mixed. To form particles.
At this time, since turbulent flow is generated behind the blades 4 of the ribbon screw and the baffle plate 5, solidified mud particles rarely accumulate as a lump.

However, since the mud particles are a coagulating liquid, the blades 4 of the ribbon screw and the baffle plate 5 are a little.
I have to clean it up as it gradually accumulates in the back of. Therefore, oval openings 20 and 21 are formed in the upper and lower sides of the case 6 in the axial direction, and the openings 20 and 21 have a semi-cylindrical cross section.
2, 23 are formed so as to cover from the top and bottom.

That is, in FIG. 6 which is a view taken along the line AA of FIG. 1, support members 24 having holes 25 at the upper and lower sides are vertically attached to both sides of the case 6, and a cross section having insertion holes therein. The outer case 22 and 23, which are semi-cylindrical in shape,
It is formed so as to be fitted in from above and below to cover the openings 20 and 21 provided at the top and bottom of the case 6 so as to form a cylindrical lid. Then, the wedges 26 are inserted into the holes 25 of the support member 24 from the side and fixed. Rubber is attached to the back sides of the outer cases 22 and 23 so that even if muddy water is liquid, it does not leak out of the mixer body 1.

Although mud water has been described in the above embodiment,
The same effect can be obtained even with a mixture of powder, gas, etc., and the mixer can be surely mixed and stirred.

[0013]

As described above, in the cylindrical mixer of the present invention, the blade of the ribbon screw provided on the rotary shaft is fixed to the rotary shaft through a space, and the flow overflowing over the blade is performed. A turbulent flow is generated by two flows, a flow that flows through a space, and the turbulent flow is amplified by colliding the two flows with a baffle plate that is arranged at a fixed interval with the blade of the ribbon screw. Behind the blades of the ribbon screw or the baffle plate by creating two turbulent flows, one is a flow that overhangs from this baffle and the other is a flow that flows in the space between adjacent baffles. No lumps of mixture collect in. Moreover, the mixture can be effectively mixed and stirred, and the mixer can be operated for a long time. Also, if a lump of the mixture accumulates behind the blades of the ribbon screw or the baffle plate, it is possible to easily open the upper and lower openings by removing the outer case. It is possible to easily remove the lump accumulated between the blades of the screw and the baffle from above by using a water stream such as a hose and clean it.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a configuration of a cylindrical mixer of an embodiment,

FIG. 2 is a front view showing a state in which a ribbon screw blade is attached to a rotating shaft,

FIG. 3 is a side view showing a state in which a ribbon screw blade is attached to a rotating shaft,

FIG. 4 is a front view showing a state where a baffle plate is attached to the rotating shaft,

FIG. 5 is a side view showing a state where a baffle plate is attached to the rotary shaft,

6 is a view taken along the line AA of FIG.

[Explanation of symbols]

 1 Mixer main body 2 Motor 3 Rotating shaft 4 Ribbon screw blade 4a Space 5 Baffle plate 5a Space 6 Case 7 Introducing pipe 8 Discharging pipe 9 Packing 10 Base plate 11, 12 Supporting member 13, 15 Side plate 14 Pouring port 16 Bearing 20, 21, Opening Part 22, 23 Outer case 24 Support member 25 Hole 26 Wedge

Claims (2)

[Claims] 1. A ribbon screw blade attached with a space between the rotary shaft and a baffle plate composed of four sheets attached with a twist in the axial direction in the rotary shaft direction at a constant interval. A cylindrical mixer for separating muddy water, wherein a plurality of rotating shafts mounted side by side are rotatably arranged in the center of a cylindrical case. 2. An opening having an elongated hole is formed in the upper and lower sides of the cylindrical case in the axial direction, and the opening is formed so as to be covered with an outer case having a semi-cylindrical cross section from above and below. A cylindrical mixer for separating muddy water according to claim 1.