JP2002059030A - Slow down cyclone excellent in stirring/kneading function of dredged mud and solidifing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more homogeneously knead dredged mud and a solidifying material in a slow down cyclone for injecting the solidifying material in a pressure feed pipe for feeding dredged mud by air pressure to feed dredged mud and the solidifying material under air pressure to discharge them to a landfill site. SOLUTION: In the slow down cyclone, an extension part 5, wherein the wall of a body part 2 is extended to a feed-in port 3 in the tangential direction coming into contact with the circumference of the body part 2, is formed to the area from a point, which advances on the circumference of the body part by 3/4 (270 deg.) from the starting point which is the end of the tangential feed-in port to the body part 2, to the point before 30 deg. (240 deg.) of the advance point, and either one of a mode (1), such that the angle of the feed-in port is turned upwardly, a mode (2), such that a guide plate 6 for forcibly guiding a plug to the position of the feed-in port is provided in the body part 2, and a mode (3), such that the body part 2 above the position of the feed-in port is formed in an upwardly opened shape, is taken so that the plug discharged in the body part 2 from the feed-in port 3 returns to the position of the feed-in port 3 through the extension part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pumping method in which a solidified material is injected into a pressure feeding pipe for pneumatically feeding dredged mud for use as a landfill material, and the dredged mud and the solidified material are pneumatically fed while being stirred and kneaded. An excellent reduction in the agitation and kneading function of the dredged mud and the solidified material, which is provided at the outlet of the pipe and discharged in a state where the dredged mud and the solidified material discharged from the inlet are more uniformly stirred and kneaded. It is about the cyclone.

[0002]

2. Description of the Related Art In recent port dredging works, the water content is reduced as much as possible in order to minimize the disposal capacity of dredged mud and to eliminate the treatment of water contained in dredged mud. Techniques for dredging mud in low concentrations and high concentrations have been developed. As a means of discharging such dredged mud to the landfill, the pneumatic feeding method that supplies a large amount of air and sends the mud using the expansion energy of the air is adopted because the dredged mud is highly concentrated and has low fluidity. It is becoming. This pneumatic pumping method enabled the muddy mud to be fed in a state close to the water content of the ground, but the properties of the dredged mud itself did not change after the mud was drained, so the landfill was left as it was. In the case of land reclamation, the water content of the landfill does not drop sharply even if it is left as it is after completion of the landfill, so the trafficability in the landfill does not improve over a long period of time, so people and vehicles can not enter, so The land becomes unusable as it is.

In view of this, a method has been proposed and implemented in which a solidifying material such as cement is injected into a pumping pipe for pneumatically feeding dredged mud so that the dredged mud has good trafficability before landfill. From the method of injecting the solidified material into the pressure feeding pipe for pneumatically feeding the dredged mud and stirring and kneading the dredged mud and the solidified material by the turbulent effect of the plug flow, stirring and kneading in the middle of the pressure feeding pipe to increase the degree of kneading The method of attaching variously devised devices for accelerating the mixing and further improving the degree of stirring and kneading is becoming widespread. By these methods, the in-pipe mixed solidification treatment method has been adopted in actual construction and has achieved results, but compared to the method of using a mechanical mixer to improve the quality of solidified treated soil, These methods are inexpensive but still in the medium quality range, and further improvement in quality is desired.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plug material is injected into a pumping pipe for pneumatically feeding the dredged mud, and when the dredged mud and the solidified material are pneumatically fed and discharged to a landfill, a plug flow is formed. The single- or double-body deceleration cyclone provided at the outlet of the pumping pipe to reduce the momentum into a spiral motion to reduce the momentum and prevent it from being scattered over a wide area, and discharge it downwards, solidifies it with dredging mud It is an object to make it possible to knead materials more uniformly.

[0005]

The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems. As a result, the conventional energy-saving cyclone has a cylindrical shape only from the outlet thereof, and the inner portion of the body has a cylindrical shape. During the movement of the plug discharged along the inner wall of the body, there was only an action that weakened the momentum and changed it into a spiral motion, so the kneading action of the dredged mud and the solidified material could not be expected much In the first place, focusing on the fact that the deenergized cyclone does not need to form a long-term spiral flow along the inner wall of the body like a normal cyclone, the plug discharged from the inlet into the body is the body. At the time when it has made one round along the inner wall of the part, it collides with the plug discharged from the inlet into the body so as to have a vector perpendicular to or opposite to the direction of travel of the plug discharged from the inlet,
The present invention was completed by investigating that the solidified material can be more uniformly mixed with the sludge mud.

That is, the present invention relates to a single-body or double-body energy-saving cyclone which is provided at an outlet of a pumping tube for pneumatically feeding dredged mud and solidified material into a pumping tube for pneumatically feeding dredged mud. Starting from the tangential inlet end to the torso and proceeding 3/4 (270 degrees) along the circumference of the torso, the 30
An extension is formed by extending the body wall to the inlet in a tangential direction tangent to the circumference of the body up to a point before (240 degrees), and a plug discharged from the inlet into the body The angle of the inlet is upward so that the plug returns to the inlet position via the extension portion. A guide plate is provided in the body for forcibly guiding the plug to the inlet position. The body of the present invention is formed in a shape that is opened upward. The present invention relates to a deenergizing cyclone having an excellent stirring / kneading function of a dredged mud and a solidified material, wherein the cyclone has at least one form. .

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a deenergizing cyclone according to the present invention, which is excellent in a function of stirring and kneading a dredged mud and a solidified material. FIG. 1 is a plan view of one embodiment of a single-body type dredging mud according to the present invention, which is excellent in agitating and kneading function of a dredging mud with solidified material, and FIG. 2 is a double-body dredging mud according to the present invention. FIG. 3 is a plan view of one embodiment of a deenergizing cyclone excellent in agitation / kneading function with a solidifying material, and FIG. 3 is a deenergizing cyclone excellent in agitating / kneading function of a double-barreled dredged mud with a solidifying material according to the present invention. FIG. 4 is a plan view of another embodiment of the present invention, and FIG. 4 is a cross-sectional explanatory view at the inlet position of a deenergizing cyclone having excellent stirring and kneading functions of the dredged mud and the solidified material according to the present invention, and FIG. In the deceleration cyclone with excellent stirring and kneading function of dredged mud and solidified material, the angle of the inlet is turned upward so that the plug discharged from the inlet into the body returns to the inlet position via the extension. FIG. 6 is an explanatory side view showing a state in which dredging mud and solidified material according to the present invention are shown. A guide forcibly guiding the plug into the body to the inlet position so that the plug discharged from the inlet into the body returns to the inlet position via the extension in the energy-reducing cyclone with excellent stirring and kneading functions. FIG. 7 is an explanatory side view showing a state in which a plate is provided, and FIG. 7 shows a plug discharged from an inlet into a body in a deceleration cyclone having excellent stirring and kneading functions of dredged mud and solidified material according to the present invention. It is a side explanatory view showing the state where the trunk above the position of the entrance was formed so as to open upward so as to return to the entrance position via the extension.

In the drawings, reference numeral 1 denotes a single-body or double-body deenergizing cyclone having an excellent stirring / kneading function of a dredged mud according to the present invention and a solidified material, and a tangential direction of the body 2 to a body 2 thereof. Is provided with an inlet 3 to which an outlet of a pressure feed pipe (not shown) for feeding air by pressure so that the plug P is discharged is provided, and an air vent 4 is provided at the top thereof in some cases. Same as the deenergized cyclone.

[0010] As shown in FIG. 4, reference numeral 5 denotes a point which starts from the end A of the tangential inlet 3 to the trunk 2 and extends on the circumference of the trunk 2 by 3/4 (2).
70 °) From the point B advanced to the point C 30 degrees before (240 °), the inlet 3 is tangential to the circumference of the body 2 in a tangential direction.
The plug P discharged from the inlet 3 into the body 2 returns to the position of the inlet 3 via the extension 5. In other words, when the plug P discharged from the inlet 3 into the body 2 makes a round along the inner wall of the body 2, it passes through the extension 5 and is discharged from the inlet 3 into the body 2. The plug P collides with the plug P with a vector perpendicular to or in the direction of travel of the plug discharged from the inlet 3.

6 forcibly forces the plug P discharged from the inlet 3 into the body 2 to return to the position of the inlet 3 via the extension 5 to the plug P discharged from the inlet 3. As shown in FIGS. 1 and 6, the guide plate is provided along the inner wall of the body portion 2 for guiding. In addition to providing the guide plate 6 along the inner wall of the body portion 2 as shown in FIG. In order for the plug P discharged from the inlet 3 into the section 2 to return to the position of the inlet 3 via the extension 5, the angle of the inlet 3 must be upward as shown in FIG. Fig. 7
As shown in (1), there is a mode in which the body 2 above the position of the inlet 3 is formed to be open upward, and these modes can be employed in combination of one or more.

The energy-saving cyclone according to the present invention having such a structure and excellent in the function of stirring and kneading the dredged mud and the solidified material,
Regardless of single-body type or double-body type, the solidified material is injected into the pressure feeding pipe for pneumatically feeding the dredged mud and discharged from the inlet 3 connected to the outlet of the pressure feeding pipe for pneumatically feeding the dredged mud and the solidified material. When the plug P has made a round of the body 2, from the point B, which starts from the end of the tangential inlet 3 to the body 2 and starts 3/4 (270 degrees) on the circumference of the body 2. 30 degrees before that (24
0 °), an extension 5 is formed extending the wall of the body 2 to the inlet 3 in a tangential direction tangent to the circumference of the body 2 up to the point C, and the angle of the inlet 3 is directed upward. A guide plate 6 for forcibly guiding the plug P to the position of the inlet 3 is provided in the body 2, and the body 2 above the position of the inlet 3 is formed to be open upward. Since at least one member is in the form, the plug P discharged from the inlet 3 into the body 2 passes through the extension 5 when making a round along the inner wall of the body 2, and passes through the extension 5. The plug P discharged from the inlet 3 collides with the plug P discharged from the inlet 3 with a vector perpendicular or opposite to the traveling direction of the plug P, so that different positions (front and rear) of the plug P are mixed. At the same time, stirring and kneading are performed to improve the quality, and the sludge is discharged from below the body 2.

[0012]

As described above in detail, the energy-saving cyclone according to the present invention, which is excellent in the function of stirring and kneading the dredged mud and the solidified material, is provided by injecting the solidified material into a pressure pipe for pneumatically feeding the dredged mud. The plug that is tangentially discharged from the inlet connected to the outlet of the pressure feed pipe that pneumatically feeds the dredged mud and the solidified material, and the plug that is rounded around the body is the plug that is sent from the inlet into the body. Since it collides so as to have a vector perpendicular to or opposite to the traveling direction, the dredged mud and the solidified material can be more uniformly stirred and kneaded. It can be easily manufactured by partial modification of the cyclone, and its industrial value is very large.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of a single-body dredging cyclone according to the present invention having an excellent stirring / kneading function between a dredged mud and a solidified material.

FIG. 2 is a plan view of one embodiment of the energy dissipating cyclone according to the present invention, which has an excellent function of stirring and kneading the dredged mud and solidified material of the double-body type.

FIG. 3 is a plan view of another embodiment of the energy dissipating cyclone according to the present invention, which is excellent in the function of stirring and kneading the dredged mud and solidified material of the double-body type.

FIG. 4 is an explanatory cross-sectional view at the inlet position of the energy dissipating cyclone, which is excellent in the function of stirring and kneading the dredged mud and the solidified material according to the present invention.

FIG. 5 is a view showing a plug discharged from an inlet into a body in an energy-reducing cyclone having excellent stirring and kneading functions of dredged mud and solidified material according to the present invention so as to return to an inlet position via an extension. It is a side explanatory view showing the state where the angle of the entrance is upward.

FIG. 6 is a view illustrating a plug that is discharged from an inlet into a body in an energy-reducing cyclone according to the present invention, which has excellent stirring and kneading functions of dredged mud and solidified material, returns to an inlet position through an extension. FIG. 7 is an explanatory side view showing a state in which a guide plate for forcibly guiding a plug to an inlet position is provided in a body.

FIG. 7 is a view showing a plug in a body discharged from an inlet to return to an inlet position via an extension part in a deceleration cyclone having excellent stirring and kneading functions of dredged mud and solidified material according to the present invention. It is a side explanatory view showing the state where the body part above the position of the entrance was formed in the shape opened upward.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Energy-saving cyclone excellent in agitation and kneading function of dredged mud and solidified material according to the present invention 2 Body 3 Inlet 4 Air vent 5 Extension 6 Guide plate P plug A End of inlet in tangential direction to body B A point that has advanced 3/4 on the circumference of the torso C A point 30 degrees before the point that has advanced 3/4 on the circumference of the torso

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E02F 7/10 E02F 7/10 Z

Claims (1)

[Claims] In a single-body or double-body deceleration cyclone provided at an outlet of a pumping pipe for injecting a solidified material into a pumping pipe for pneumatically feeding dredged mud and for pneumatically feeding the dredged mud and the solidified material, a body ( A point (B) that starts from the end of the tangential inlet (3) to 2) as a starting point (A) and advances 3/4 (270 degrees) on the circumference of the body (2).
To the point (C) 30 degrees before (240 degrees)
Body (2) tangentially to the circumference of (2) up to the inlet (3)
An extension (5) is formed by extending the wall of
The angle of the inlet (3) is adjusted so that the plug (P) discharged from the inlet (3) into the (2) returns to the position of the inlet (3) via the extension (5). A guide plate (6) for forcibly guiding the plug (P) to the position of the inlet (3) is provided in the body (2) which faces upward, and the torso above the position of the inlet (3) is provided. 2) is formed in an upwardly open shape. The energy-saving cyclone (1) having an excellent stirring / kneading function of the dredged mud and the solidified material, wherein the energy-saving cyclone (1) has at least one of the following features.