JP2005000854A - Screw conveyer type continuous stirring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably carry out stirring and mixing materials regardless of the properties of the materials and at the same time save the installation space at the time of installation with respect to an apparatus for stirring and mixing materials using a screw conveyer. <P>SOLUTION: A feeding part 100 in which a feeding screw conveyer 20 is installed and a stirring part 200 in which a stirring screw conveyer 60 are separately composed and joint parts 31 and 32 in the feeding part side and joint parts 71 and 72 in the stirring part side are joined to each other to use them. Joining is done in a plurality of up and down stages other than linear joining so that the installation space is saved at the time of installation. A gate mechanism 50 is installed between the feeding screw conveyer 20 and the stirring screw conveyer 60 to expand or contract the flowing channel cross-section of a material to be stirred and at the same time to control the rotation so that feeding amount can be controlled precisely. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a continuous stirring apparatus that performs stirring and mixing using a screw conveyor.
[0002]
[Prior art]
In the field of architecture and civil engineering, a continuous mixing device is known that stirs and mixes various materials using the stirring function, mixing function, conveying function and the like of a screw conveyor.
[0003]
For example, in the field of civil engineering, in shield construction such as tunnel construction, an apparatus using a screw conveyor that continuously takes excavated earth and sand and mixes it with a modifying material and discharges it has been proposed (for example, Patent Document 1). With such a configuration, a configuration is adopted in which the screw casing of the screw conveyor is appropriately inclined so that the residence time in the screw casing having the screw conveyor can be adjusted in accordance with the change in fluidity of the excavated soil.
[0004]
On the other hand, in both the civil engineering and construction fields, concrete production on site may be required, and in order to meet such demands, continuous kneading using a screw conveyor is possible so that concrete materials can be mixed, stirred and kneaded on site. An apparatus has been proposed (Patent Document 2).
[0005]
[Patent Document 1]
JP-A-11-247176 (see FIG. 1)
[0006]
[Patent Document 2]
Japanese Patent Laid-Open No. 5-34512 (see FIG. 1)
[0007]
[Problems to be solved by the invention]
The continuous mixing apparatus using such a screw conveyor is configured so that the feed amount, mixing, and mixing state of the mixed material can be adjusted by rotation control of the screw conveyor.
[0008]
However, there are various kinds of mixed materials. When concrete is manufactured by sequentially adding cement, aggregate, water, etc., soft soil, soft mud soil by excavation soil or river lake water in shield construction etc. In the case of mixing together with the modifier, etc., the fluidity of the mixed material is different, and it has not been possible to cope with a continuous mixing apparatus having the same configuration. It was impossible to cope with only the rotation speed control of the screw conveyor of the same continuous mixing device without changing the model.
[0009]
That is, even if the number of rotations of the screw conveyor is changed, the feed amount is different for mixed materials with greatly different fluidity.For example, in the case of clogged in a screw casing or dredged soil with a high water content, In some cases, the mixture flows out of the outlet without being sufficiently mixed.
[0010]
In various construction sites, it is often necessary to improve soil quality such as excavated soil and dredged soil and to manufacture cast-in-place concrete. However, since the fluidity of the mixed material is remarkably different between the soil improvement and the concrete production, it is not possible to cope with the same apparatus, and it is necessary to prepare a dedicated continuous mixing apparatus for each.
[0011]
However, since various devices, machines, and the like are installed at the construction site, it is not possible to secure a sufficient installation space for the devices and the like, and the construction is proceeding while the input facilities are being exchanged.
[0012]
In such a situation, for example, it is not preferable to introduce a plurality of continuous mixing apparatuses on the site for each purpose of soil improvement and concrete production, both in terms of work efficiency and work pace.
[0013]
Moreover, the continuous mixing apparatus using a screw conveyor inevitably increases the length of the screw conveyor section due to its configuration, and the overall configuration of the apparatus becomes long. Although it depends on the construction situation, etc., there is generally a limit to the space at the site, and there are many cases where the soil storage and reforming space is limited, and it is often difficult to carry in such a large device.
[0014]
An object of the present invention is to enable stable stirring and mixing regardless of the properties of a material in an apparatus for stirring and mixing materials using a screw conveyor.
[0015]
Another object of the present invention is to enable space saving in an apparatus for stirring and mixing materials using a screw conveyor.
[0016]
[Means for Solving the Problems]
In the agitation and mixing in the screw conveyor, the agitation and mixing state are greatly affected by the feed amount of the material by the screw conveyor. Therefore, the present inventor considered that such a feed amount can be appropriately controlled so that stable stirring and mixing can be performed regardless of the properties of the material, and the following configuration has been conceived.
[0017]
That is, one configuration has been considered in which the feed amount is adjusted by appropriately narrowing the passage of the material fed from the feed screw conveyor by opening and closing the gate.
[0018]
The other is a configuration in which the screw conveyor is divided into two parts, and a feed screw conveyor for feeding materials and a stirring screw conveyor for stirring and mixing can be independently controlled to rotate independently.
[0019]
That is, the screw conveyor type continuous stirring device of the present invention has a built-in feed screw conveyor for feeding a stirring material, a feed unit equipped with a screw casing provided with an inlet for the stirring material, and a stirring screw conveyor. A stirring portion equipped with a screw casing provided with a discharge port, and the feeding screw conveyor and the stirring screw conveyor are formed integrally, and between the feeding portion and the stirring portion, An openable / closable gate for adjusting the feed amount of the stirring material is provided.
[0020]
Alternatively, the screw conveyor type continuous stirring device of the present invention includes a feed screw conveyor for feeding a stirring material, a feed section equipped with a screw casing provided with an inlet for the stirring material, and the feeding screw conveyor. And a stirring section equipped with a screw casing provided with a discharge port.
[0021]
In the screw conveyor type continuous stirring apparatus having such a configuration, an openable and closable gate for adjusting the feed amount of the stirring material is provided between the feeding unit and the stirring unit.
[0022]
In the screw conveyor type continuous stirring device having the above-described configuration, the feeding unit and the stirring unit are formed separately, and the feeding unit is provided with a feeding unit side coupling unit that couples the feeding unit to the stirring unit. The stirring unit is provided with a stirring unit side connecting unit for connecting the stirring unit to the feeding unit, and the screw conveyor type is connected with the feeding unit side connecting unit and the stirring unit side connecting unit. It is characterized by using a continuous stirring device.
[0023]
In the screw conveyor type continuous stirring device having such a configuration, the feeding part side connecting part is provided at an opening end of a screw casing incorporating the feeding screw conveyor and an opening part of a peripheral surface, and the stirring part side connecting part is The screw casing having the built-in stirring screw conveyor is provided at the opening end of the screw casing and the opening of the peripheral surface.
[0024]
In the screw conveyor type continuous stirring device having the above-described configuration, the feeding portion side connecting portion provided on the circumferential surface of the screw casing incorporating the feeding screw conveyor, and the circumferential surface of the screw casing incorporating the stirring screw conveyor. Further, the agitation unit side coupling unit is connected to each other, and the feeding unit and the agitation unit are provided in a plurality of stages in the vertical direction.
[0025]
In the screw conveyor type continuous stirring device having any one of the above-mentioned configurations, the feed portion side connecting portion provided on the peripheral surface of the screw casing containing the feeding screw conveyor, and the periphery of the screw casing containing the stirring screw conveyor. The stirrer-side connecting portion provided on the surface is connected to each other, and the arrangement of the screw casing incorporating the feeding screw conveyor and the screw casing incorporating the agitating screw conveyor is arranged in parallel or crossedly. It is formed in the connection part which can select either of these.
[0026]
In the screw conveyor type continuous stirring apparatus having any one of the above-described configurations, the feeding unit is provided with a hopper as a stirring material charging port, and the hopper is provided with a paddle.
[0027]
In the screw conveyor type continuous stirring apparatus having such a configuration, a gravel removing member having a plurality of passage holes through which a predetermined size of gravel cannot pass on the opening surface of the hopper is freely selectable in the opening / closing direction on the opening end side of the hopper. It is possible to be provided.
[0028]
As shown in the above configuration, if the feeding unit and the stirring unit are configured separately and can be connected in use, the apparatus can be easily carried in and, for example, depending on the site situation, It can be connected to a plurality of stages such as two stages to save space during installation.
[0029]
In particular, when connecting up and down in a plurality of stages, the arrangement can be selected so that the top and bottom are parallel or in the intersecting direction, thereby facilitating on-site handling.
[0030]
In addition, the gravel removal member can be freely selected in the opening and closing direction on the hopper provided for the addition of the stirring material, so that the gravel collected on the gravel removal member can be opened so that the gravel removal member is inclined in the desired direction. The gravel can be slid down from the gravel removal member.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the screw conveyor type continuous stirring apparatus of the present invention, a so-called stirring material including a mixed material is fed using a feeding screw conveyor, and the sent stirring material can be stirred or mixed by the stirring screw conveyor. It has become.
[0032]
That is, in the screw conveyor type stirring device of the present invention, stirring of a single material or mixing of a plurality of materials is performed by stirring or mixing while feeding the charged material first on the screw conveyor and continuously discharging it. It is configured to be able to.
[0033]
In addition, although the name of the apparatus of the present invention is a screw conveyor type continuous stirring apparatus for the sake of convenience, it is not necessary to limit the apparatus function to such a name, and it does not mean a dedicated apparatus that performs only stirring of materials. That is, the apparatus of the present invention can both stir materials and mix materials. It is an apparatus that can be used for both stirring and mixing of materials.
[0034]
(Embodiment 1)
FIG. 1 is a front view showing the overall configuration of the screw conveyor type continuous stirring device of the present invention in a state where it is connected to a feeding unit and a stirring unit which are configured separately from each other in the longitudinal direction. FIG. 2 is a plan view showing the gravel removal member. FIG. 3 is an end view showing the rear end side of FIG. FIG. 4A is an exploded explanatory view showing the opening / closing mechanism part of the gravel removing member, and FIG. 4B is a plan view showing a part of the opening / closing mechanism part of the gravel removing member. FIG. 5A is a perspective view showing the configuration of the main part of the handle for opening and closing the gate, and FIGS. 5B and 5C are front views showing the gate plate. FIG. 6A is a plan view showing a flange surface of the feeding portion side connecting portion, and FIG. 6B is a plan view showing a lid of the inspection hole. 7A and 7B are front views showing the propeller-shaped spiral blade. FIG. 8 is a front view showing the tip side of FIG.
[0035]
As shown in FIG. 1, the screw conveyor type continuous stirring apparatus A of the present invention is composed of a feeding unit 100 and a stirring unit 200 formed separately, and the feeding unit 100 and the stirring unit 200 are connected to each other. It is intended to be used in. In the drawing, the feeding unit 100 and the stirring unit 200 are shown in a range of double arrows.
[0036]
The feed unit 100 is provided with a hopper 10 into which a so-called stirring material including a mixed material and the like and a screw casing 30 having a feed screw conveyor 20 built therein are provided. The hopper 10 is provided above the screw casing 30 through an opening so that a stirring material can be put into the screw casing 30.
[0037]
A gravel removing member 11 is provided on the upper opening surface of the hopper 10. As shown in FIG. 2, the gravel removing member 11 is provided with a plurality of predetermined large passage holes 14 in a frame 11 a intersecting the vertical beam 12 and the horizontal beam 13 to cover the entire upper opening surface of the hopper 10. It is formed to be able to.
[0038]
The size of the passage hole 14 is set such that a predetermined size of gravel to be removed does not pass through so that too much of the gravel to be thrown in does not enter the hopper 10.
[0039]
Hinges 15a and 15b provided with pin insertion holes for detachably pinning the opening / closing mechanism portion of the gravel removal member 11 are opposed to both lateral frame portions of the frame 11a so as to protrude outward. Is provided. On the other hand, hooks 16a and 16b are provided at both opposing vertical frame portions of the frame 11a so that the gravel removing member 11 can be hung on both sides of the vertical frame portion with a wire or the like.
[0040]
On the other hand, as shown in FIG. 3, a plurality of pairs of hinges 17 a and 17 b are provided on the periphery of the upper opening portion of the hopper 10 at positions corresponding to the hinges 15 a and 15 b of the gravel removing member 11. The hinges 17a and 17b are provided with pin insertion holes in the same manner as the hinges 15a and 15b.
[0041]
As shown in FIG. 4A, the pin 18 is passed through the hinges 17a, 15a, and 17a in this order with the hinge 15a on the gravel removal member 11 side being sandwiched between a pair of hinges 17a provided on the hopper 10 side. . In a state where the pin 18 is passed, as shown in FIG. 4 (B), the pin removal preventing member 19 is inserted into the hole 18a at the tip of the pin 18 so that the gravel removing member 11 can be freely opened and closed in the upper surface opening of the hopper 10. Install.
[0042]
For example, when soil or the like that needs to be modified is introduced into the hopper 10 through the gravel removing member 11, excessive gravel accumulates on the gravel removing member 11 without passing through the passage holes 14 of the gravel removing member 11. In a state where it has accumulated to some extent, the pin 18 on the side corresponding to either the hinge 15a side or the hinge 15b side constituting the opening / closing mechanism is removed.
[0043]
When the pin 18 on the hinge 15a side is pulled out, if the hook 16a side is hung with a crane or the like and lifted, the gravel removing member 11 opens obliquely upward with the pin 18 of the opening / closing mechanism on the hinge 15b side as a fulcrum. The gravel on the gravel removing member 11 is slid down.
[0044]
The opening / closing direction may be pulled up by pulling the pin 18 on the hinge 15b side and lifting the hook 16b side. In that case, the opening / closing direction can be reversed from the above direction, and the gravel can be dropped according to the field situation. The gravel removing member 11 can be opened and closed freely in a convenient direction.
[0045]
In addition, 10a shown in FIG. 3 shows a hopper hook, and is used when lifting the entire hopper 10 with a crane or the like when assembling the apparatus.
[0046]
The hopper 10 is provided with a paddle mechanism 40 as shown in FIGS. The paddle mechanism 40 is configured by providing paddles 43 at appropriate intervals on a rotating shaft 42 that can be rotated by a motor 41 provided outside the hopper 10.
[0047]
The paddle mechanism 40, for example, enters a bridging state at a narrow portion of the mouth of the hopper 10 when a stirrer material with strong adhesion and poor fluidity such as clay is introduced, and subsequent material charging cannot proceed. It is provided to prevent the situation. By rotating the paddle 43, the bridge state of the input material can be destroyed, and the material can be continuously input.
[0048]
Of course, when there is no possibility of such a bridge phenomenon, the paddle 43 may be stopped. Alternatively, when it is not planned from the beginning to introduce a material that causes such a bridge phenomenon, the paddle mechanism 40 may not be provided.
[0049]
The screw casing 30 provided with the hopper 10 having the above configuration includes a screw conveyor 20 for feeding. The rotating shaft 21 is provided so that the center side of the screw casing 30 may be along the longitudinal direction.
[0050]
A spiral blade 22 is provided around the rotating shaft 21 so that the stirring material charged through the hopper 10 can be fed first. The peripheral surface of the spiral blade 22 is provided with a built-up portion by welding so that chipping or the like of the spiral blade 22 does not occur when sending gravel or the like.
[0051]
The rear end side of the rotary shaft 21 of the feed screw conveyor 20 is connected to a motor 23 externally attached to the screw casing 30, and the rotation control of the motor 23 can control the rotation of the feed screw conveyor 20. .
[0052]
The screw casing 30 is formed in a long cylindrical casing, and is set longer than the end of the rotating shaft 21 of the feed screw conveyor 20 and is opened as it is. On the opening end side of the screw casing 30, a flange 31 a formed in a ring shape is provided around the screw casing 30, and a bolt hole is formed on the ring surface of the flange 31 a so as to be formed in the feeding portion side connecting portion 31. .
[0053]
Between the feed part side connection part 31 and the terminal end 21a of the rotating shaft 21, the inside of the screw casing 30 is formed in the hollow part 30a.
[0054]
As shown in FIG. 1, in the screw casing 30 portion formed in the hollow portion 30a, a gate mechanism 50 for adjusting the feed amount of the stirring material is provided immediately after the position of the terminal end 21a of the rotating shaft 21. The gate mechanism 50 moves up and down in the screw casing 30 to narrow the flow path width of the stirring material and adjust the flow rate.
[0055]
As shown in FIGS. 5A and 5B, the gate mechanism 50 includes a circular gate plate 51 having a size corresponding to the size of the cross-sectional opening of the screw casing 30, that is, the flow passage cross section of the stirring material. A male screw 52 is connected to the upper end of the screw casing 52, and the male screw 52 is screwed into a female screw 54 at the center of a handle 53 provided above the screw casing 30.
[0056]
By rotating the handle 53, the male screw 52 is moved up and down, and the disk provided at the tip of the male screw 52 is moved up and down to close and squeeze the circular cross-section stirring material flow path in the screw casing 30. Or open.
[0057]
That is, the flow path control can be performed by adjusting the expansion and contraction of the cross section of the flow path in accordance with the fluidity of the material of the stirring material sent by the feed screw conveyor 20. In particular, the feed amount can be finely adjusted by combining the rotation control of the feed screw conveyor 20 and the flow rate adjusting mechanism of the gate mechanism 50.
[0058]
Compared to the conventional method of adjusting the feed amount by adjusting the rotation of the screw conveyor, the feed amount can be finely adjusted, so even with soft soils such as concrete mixed materials and dredged soils, sufficient agitation can be achieved. Alternatively, an appropriate feed amount to the stirring unit 200 can be ensured so that sufficient mixing can be performed.
[0059]
As shown in FIG. 1, a circular opening is provided on the lower peripheral surface of the screw casing 30 formed in the hollow portion 30 a. A short cylindrical portion is raised in accordance with the circular opening, and a cylindrical end portion is formed on the flange 32a. The flange 32 a functions as the feeding part side connecting part 32.
[0060]
FIG. 6A shows the flange surface of the flange 32a. The flange 32a is provided with a plurality of bolt insertion holes 33 at equal intervals on the same circumference of the ring-shaped flange surface. In the case shown in the figure, a total of 24 bolt insertion holes 33 are provided, 12 on the inner circumference and 12 on the outer circumference so that the central angle is 36 degrees.
[0061]
When the feeding portion side connecting portion 30 does not function, as shown in FIG. 1, the circular opening is provided with a lid 34 formed in a detachable hatch shape and is fed from the feeding screw conveyor 20. The stirring material thus produced can be smoothly delivered without being dropped into the circular opening.
[0062]
A small cylindrical portion is provided on the upper peripheral surface of the screw casing 30 portion formed in the hollow portion 30a through a circular opening provided in the peripheral surface, and is configured as a stirring material charging port 35 as shown in FIG. ing.
[0063]
Further, as shown in FIG. 1, a stand 36 is provided below the screw casing 30 of the feeding unit 100, so that it is not necessary to construct a support stand by each time by assembling H-shaped steel or the like when installing on the site. It has become.
[0064]
Next, the stirring unit 200 connected to the feeding unit 100 having the above configuration will be described. As shown in FIG. 1, the stirring unit 200 includes a screw casing 70 that incorporates a stirring screw conveyor 60. The agitation screw conveyor 60 is configured by providing a spiral blade 62 around a rotating shaft 61.
[0065]
As shown in FIG. 1, the spiral blade 62 provided on the rotating shaft 61 has a continuous spiral blade 62 a (62), a propeller-shaped spiral blade 62 b (62), from the rear end 61 a side to the tip of the rotating shaft 61. In the order of the continuous spiral blades 62c (62), the adjacent blade intervals are provided so as to have the same pitch a. However, the interval between adjacent blades does not necessarily have to be the same pitch.
[0066]
As shown in FIG. 7A, the propeller-shaped spiral blade 62b is formed in a propeller shape that is divided into three portions of 60 ° per one cycle on the outer periphery of the spiral blade 62. Alternatively, as shown in FIG. 7B, a propeller-shaped spiral blade 62b that is divided into two small blades and large blades may be formed. In such a configuration, the opposing edge angle θ is set to 60 °.
[0067]
The shape of the propeller-shaped spiral blade 62b need not be limited to the above-described shape, and may be a shape divided into a plurality of portions, for example, every 40 °. A shape with good stirring efficiency may be set as appropriate.
[0068]
As shown in FIGS. 1 and 8, the stirring screw conveyor 60 having such a configuration is connected to a motor 63 provided on the outer side of the distal end of the screw casing 70 as shown in FIGS. 1 and 8 so that the rotation can be controlled by the motor 63. It is configured.
[0069]
In this way, by independently controlling the rotation of the feeding screw conveyor 20 on the feeding unit 100 side and the stirring screw conveyor 60, a screw conveyor in which feeding and stirring are integrally formed on one axis is adopted. Unlike the case, the feed amount and the stirring amount can be minutely adjusted, and the optimum feed amount can be set for stirring and mixing of the stirring materials having various fluidity.
[0070]
On the open end of the screw casing 70, that is, on the rear end 61a side of the rotary shaft 61 of the stirring screw conveyor 60, the screw casing 70 is opened as it is. A flange 71a formed in a ring shape around the opening end of the screw casing 70 is provided on the opening end side, and a bolt hole is formed on the ring surface of the flange 71a so as to be formed in the stirring portion side connecting portion 71. Yes.
[0071]
In a state where the flange surfaces of the flange 71a and the flange 31a described above are opposed to each other, both the flanges 71a and 31a are tightened together with bolts, so that the agitation unit side connection 71 and the feed unit side connection unit 31 are connected. The feeding unit 100 and the stirring unit 200 are connected to each other.
[0072]
On the other hand, a circular opening is provided on the upper peripheral surface on the distal end side of the screw casing 70, and a ring-shaped flange 72a is provided at the opening end of the cylindrical portion raised from the circular opening so as to be connected to the stirring portion. A portion 72 is formed.
[0073]
The flange 72a of the stirring portion side connecting portion 72 having such a configuration is formed in the same manner as the flange 31a shown in FIG. That is, twelve bolt insertion holes are provided on the flange surface at a center angle of 36 ° on the inner and outer circumferences at equal intervals.
[0074]
On the other hand, the screw casing 70 having such a configuration is provided with a stirring material charging port 73 formed in a small cylindrical portion through a circular opening provided on the peripheral surface thereof. In addition, in the case shown in FIG. 1, an inspection port 74 provided with a lid 74 a formed in a hatch shape as shown in FIG. 6B is provided on the upper peripheral surface of the screw casing 70.
[0075]
Further, a discharge port 75 provided with a detachable lid 75a is provided on the lower peripheral surface on the distal end side of the screw casing 70. A product stirred or mixed by the stirring unit is discharged from the discharge port 75.
[0076]
In the screw conveyor type continuous stirring apparatus A having the configuration described above, the feeding unit 100 and the stirring unit 200 are configured such that the rotating shaft 21 of the feeding screw conveyor 20 and the rotating shaft 61 of the stirring screw conveyor 60 are in a straight line. Although the case where they are connected so as to be arranged is shown, as shown in FIG. 9, they may be connected in two stages up and down, that is, a plurality of stages.
[0077]
In the field situation, from the viewpoint of space, as shown in FIG. 1, the feeding unit 100 and the stirring unit 200 may not be connected for a long time. Therefore, the screw conveyor type continuous stirring device of the present invention adopts a configuration that can be connected in a plurality of stages up and down.
[0078]
That is, as shown in FIG. 9, by connecting the feed part side connection part 32 provided in the screw casing 30 of the feed part 100 and the stirring part side connection part 72 provided in the screw casing 70 of the stirring part 200, The feed unit 100 and the stirring unit 200 are connected in two upper and lower stages.
[0079]
As shown in FIG. 6 (A), bolt insertion holes 33 are provided at equal intervals on the flange surface so that the flange 32a of the feed portion side connecting portion 32 has a central angle of 36 °. On the other hand, although not shown, the flange 72a of the stirrer side connecting portion 72 is also provided with bolt insertion holes at equal intervals on the flange surface, as in the case shown in FIG.
[0080]
Therefore, by performing joint tightening with bolts in a state where the positions of the bolt insertion holes 33 on the flange surfaces of both flanges 32a and 72a are aligned, as shown in FIG. 9, the feeding portion side connecting portion 32 and the stirring portion side connecting portion are connected. Connection with the unit 72 is performed.
[0081]
In the case shown in FIG. 9, the flange 31 a side of the feed part side connecting part 31 of the feed part 100 installed above is closed by a lid 37. On the other hand, the lid 34 is removed on the flange 32a side of the feeding portion side connecting portion 32.
[0082]
In the stirring unit 200 provided below the feeding unit 100, the stirring unit side connecting unit 71 side is opened as it is and used as a discharge port. On the other hand, the discharge port 75 is closed with a lid 75a.
[0083]
In this way, as shown in FIG. 9, the feeding unit 100 and the stirring unit 200 are connected by the feeding unit side connecting unit 32 and the stirring unit side connecting unit 72, and the discharge port side of the stirring unit 200 is the upper feed. Two portions are provided so as to be positioned on the hopper 10 side of the portion 100.
[0084]
When connecting the feeding unit 100 and the stirring unit 200 in two stages, there are several methods depending on how the flange surfaces of the flanges 32a and 72a are overlapped. In other words, for such connection, for example, the positions of the bolt insertion holes 33 of the flange 32a and the flange 72a are made different by a central angle of 36 °, so that the direction in which the screw casing 30 faces and the direction in which the screw casing 70 faces are mutually positioned. The relationship can be set in 10 ways as schematically shown in FIG.
[0085]
In FIG. 10, the positional relationship of the stirring part 200 (indicated by an arrow in the figure) with respect to the feeding part 100 is shown. An arrowhead direction of the stirring unit 200 indicated by an arrow indicates a discharge port side direction that is an opening end side of the screw casing 70 of the stirring unit 200. The two-stage configuration shown in FIG. 9 corresponds to the case where the broken line arrow shown in FIG. 10 faces the right side of the page.
[0086]
Although the case where the flange insertion holes 33 of the flange 32a constituting the feeding portion side connecting portion 32 and the flange 72a constituting the stirring portion side connecting portion 72 are provided at a center angle of 36 ° is shown, of course, other than that The central angle may be set. For example, if the central angle is set in increments of 18 °, 20 setting methods can be selected in the two-stage configuration of the feeding unit 100 and the stirring unit 200. Further, the bolt insertion hole 33 may be set as a long hole so that the degree of freedom is further increased so that the connection angle between the feeding unit 100 and the stirring unit 200 can be arbitrarily set.
[0087]
If independent control of the rotational speeds of the feeding screw conveyor and the agitating screw conveyor is possible, stable mixing can be achieved by changing the rotational speed of the screw regardless of the flowability process of the mixed material.
[0088]
A method for using the screw conveyor type continuous stirring apparatus A of the present invention having the above-described configuration will be described below.
[0089]
For example, when used for reforming sludge when dredging rivers or lakes, sludge dripped continuously with a belt conveyor or the like from the dredging side is supplied into the hopper 10 of the screw conveyor type continuous agitator A. . When handling such sludge, the gravel removing member 11 may be removed.
[0090]
Since the sludge that has been continuously fed has a large amount of water, when it enters the screw casing 30, it shows a behavior that it flows out before being fed out by the feeding screw conveyor 20. Therefore, the handle 53 of the gate mechanism 50 is rotated to rotate the gate plate. 51 is lowered, for example, until it is lower than half of the cross section of the screw casing 30 to suppress sludge natural outflow.
[0091]
By suppressing the natural outflow in this manner, sludge is sent first in accordance with the rotation of the feeding screw conveyor 20, and the flow rate can be controlled. In the absence of such a gate mechanism 50, sludge naturally flows out and fills the hollow portion 30a of the screw casing 30 and further overflows from the stirring material inlet 35.
[0092]
The sludge whose flow rate is adjusted by the gate mechanism 50 and the feed screw conveyor 20 in this way passes through the cavity 30a and is pushed into the screw casing 70 of the stirring unit 200.
[0093]
On the other hand, for example, a modifying material such as incinerated ash from a yarn factory is introduced into the screw casing 30 from the stirring material inlet 35 provided in the cavity 30a. The reforming material such as incinerated ash and the sludge sent from the rear by the feed screw conveyor 20 are sent together into the screw casing 70 of the stirring unit 200.
[0094]
An agitating screw conveyor 60 is provided in the screw casing 70, and the sludge and the reforming material fed in are agitated and mixed by the agitating screw conveyor 60. The number of rotations of the agitating screw conveyor 60 during agitation and mixing corresponds to the feed amount, that is, the sludge that is continuously charged does not unnecessarily fill the cavity 30a, and the agitation unit The rotation of the motor 63 is controlled so that the supply to the motor 200 is not interrupted.
[0095]
The dredged sludge is mixed with the modifying material by the stirring screw conveyor 60 that is appropriately rotationally controlled in this manner, and discharged from the discharge port 75 as smooth modified soil.
[0096]
Even when the feeding unit 100 and the stirring unit 200 shown in FIG. 1 are linearly connected to each other, the feeding unit 100 and the stirring unit 200 are stacked in two upper and lower stages as shown in FIG. This is basically the same even in the case of a configuration that is folded. In the configuration shown in FIG. 9, the opening end side of the screw casing 70 can be used as the discharge port as it is without using the discharge port 75.
[0097]
The mud soil such as soft soil other than sludge can be mixed with the modifier in the same manner. The open / close amount of the gate plate 51 of the gate mechanism 50 may be set according to the amount of moisture in the mud to be handled.
[0098]
As the moisture content of the mud increases, that is, as the fluidity increases, the gate plate 51 may be lowered to narrow the flow path so as to suppress natural outflow. Conversely, the smaller the fluidity, the wider the flow path may be by opening the gate.
[0099]
The opening / closing amount of the gate plate 51 of the gate mechanism 50 may be set in advance, but may be adjusted flexibly according to the situation. For example, in shield construction such as tunnels, it is assumed that the excavated soil is discharged without being modified using this machine. However, adjustment of the feed screw conveyor 20, the gate mechanism 50, and the stirring screw conveyor 60 should be adjusted. If various combinations are made, it is possible to appropriately cope with changes in soil quality during excavation.
[0100]
Further, in the case of clay mud, when mud is continuously poured into the hopper 10, the clay adheres to the lower inner wall of the hopper 10, often passing through a bridge phenomenon, and the loaded mud is screw casing 30. In some cases, it is not supplied promptly.
[0101]
When such a situation is expected, the paddle mechanism 40 provided in the hopper 10 may be operated so that the rotating paddle 43 does not cause a mud-bridge phenomenon.
[0102]
Moreover, when throwing in the soil containing gravel, the gravel removal member 11 should just be provided in the upper surface of the opening of the hopper 10, and it should just prevent it being taken in into the hopper 10.
[0103]
Next, the case where CSG concrete is manufactured using the screw conveyor type continuous stirring apparatus A will be described.
[0104]
In such a case, crushed stone as a mixed material of CSG concrete is introduced from the hopper 10. The charging may be performed continuously using, for example, a backhoe so that the inside of the hopper 10 is not emptied. The input crushed stone is fed first by the feed screw conveyor 20.
[0105]
When the crushed stone is supplied from the hopper 10 and sent, it is preferable that the gate plate 51 of the gate mechanism 50 is lifted upward so that the crushed stone flow path is sufficiently wide so that the crushed stone is not clogged. In addition, when throwing crushed stone, the paddle mechanism 40 provided in the hopper 10 is stopped.
[0106]
On the other hand, cement is supplied from the stirring material inlet 35. To input cement, a fixed amount may be supplied with a rotary feeder or the like by connecting a suction hose for input so that cement powder is not scattered around. The input amount may be controlled by inverter control or the like.
[0107]
In this way, the crushed stone and cement sent from the rear are brought together in the cavity 30 a and fed into the screw casing 70.
[0108]
On the other hand, water is supplied from the stirring material charging port 73. When supplying water, water may be uniformly sprayed using a nozzle (not shown) or the like.
[0109]
In this way, in the screw casing 70, the cement and crushed stone that have been fed are drawn into the stirring screw conveyor 60 side at the continuous spiral blade 62a portion of the stirring screw conveyor 60, and water is transferred at the propeller spiral blade 62b portion. And mixed. The CSG concrete in which these materials are stirred and mixed is further sent to the discharge port 75 side at the continuous spiral blade 62c portion.
[0110]
In this way, regardless of the fluidity of the material, it can be applied to materials of various properties, and can be processed with this machine from the production of CSG concrete to the improvement of mud. It is not necessary to change the model, etc., and it is an extremely easy-to-use device, and it is possible to greatly reduce the moving cost in stirring and mixing.
[0111]
(Embodiment 2)
In the said embodiment, it connects with the feed part 100 so that it may return in two steps up and down by providing one stirring part side connection part 72 provided in the surrounding surface of the screw casing 70 by the side of the stirring part 200. Although the configuration is shown, it is also possible to configure a multi-stage configuration with three or more stages.
[0112]
That is, as schematically shown in FIG. 11 (A) above and below the screw casing 70 of the agitation unit 200, the agitation unit side coupling portion including the flange 76 a is similar to the configuration of the flange 72 a of the agitation unit side coupling unit 72. If 76 is provided, for example, as shown in FIG.
[0113]
In such a configuration, of course, the feed unit side connection unit 31 side of the first stage feed unit 100, the stirring unit side connection unit 71 side of the second stage stirring unit 200, and the stirring unit side connection of the third stage stirring unit 200. On the part 76 side, lids 37 and 77 may be provided and closed.
[0114]
(Embodiment 3)
In the present embodiment, unlike the case shown in FIG. 1, the installation position of the feed part side connecting part 32 of the feed part 100 is not provided on the hollow part 30 a side of the screw casing 30, as shown in FIG. The front side of the gate mechanism 50 is provided.
[0115]
By connecting the flange 32a of the feed part side connecting part 32 having such a configuration and the flange 72a of the stirring part side connecting part 72 of the stirring part 200 in the same manner as described above, as shown in FIG. The stirring material can be dropped onto the stirring screw conveyor 60 of the stirring unit 200 from the front end side of the feeding screw conveyor 20.
[0116]
In the feeding unit 100 having such a configuration, the configuration of the cavity 30a can be omitted. However, when the feed unit 100 having such a configuration is used, the feed amount cannot be adjusted using the gate mechanism 50 in the upper and lower multi-stage configuration with the stirring unit 200.
[0117]
(Embodiment 4)
In the above description, the feeding unit 100 and the stirring unit 200 have been described as separate components, and in the use, a configuration in which the feeding unit 100 and the stirring unit 200 are connected in a plurality of stages as appropriate linearly or vertically is described.
[0118]
In particular, by separately controlling the feeding screw conveyor 20 and the stirring screw conveyor 60, the amount of stirring material fed can be finely adjusted. In addition, a configuration in which various stirring materials can be stirred and mixed up to soft soil such as clay. In addition, the gate mechanism 50 is combined to allow further fine adjustment.
[0119]
However, in the present embodiment, a case will be described in which the configuration described in the first embodiment is configured such that the feeding unit 100 and the stirring unit 200 are integrally formed from the beginning and are not configured separately.
[0120]
Certainly, if the feeding unit 100 and the stirring unit 200 are configured separately, various effects can be obtained as described above. However, various materials are not assumed as the stirring material, but a certain amount is assumed. In this case, it may be considered that the adjustment of the feed amount is not required.
[0121]
In addition, the screw conveyor 20 for feeding and the screw conveyor 60 for stirring are configured as a single shaft, so that the configuration of the screw conveyor can be simplified and the cost can be reduced.
[0122]
In the case illustrated in FIG. 13, the feeding unit 100 and the stirring unit 200 are not configured so as to be separated separately, and are integrally formed from the beginning. Further, the screw conveyor for feeding 20 and the screw conveyor for stirring 60 are not separated and are configured as a single screw conveyor 80. The rotating shaft 81 is provided with a spiral blade 22 for feeding and a spiral blade 62 for stirring.
[0123]
However, the spiral blade 22 for feeding and the spiral blade 62 for stirring are not continuously provided, and a space corresponding to one cycle of the blade is opened. The gate plate 51 of the gate mechanism 50 is formed as shown in FIG. 5 (C), and moves up and down across the rotation shaft 81 at the cut portion so that the feed amount of the stirring material can be adjusted. It has become.
[0124]
Further, as shown in FIGS. 13 and 14, the rotating shaft 81 of the screw conveyor 80 is rotatably supported by a bearing 84 of a rotating shaft support member 83 that is suspended from above the screw casing 82. Yes.
[0125]
Thus, the tip end side of the screw casing 82 on which the rotating shaft 81 is supported is opened as it is and used as the discharge port 85. As shown in FIG. 1, it is not necessary to provide the lower discharge port 75 in particular.
[0126]
Further, in such a configuration, unlike the configuration of the feeding unit 100 shown in FIG. 1, a configuration corresponding to the hollow portion 30a can be omitted.
[0127]
(Embodiment 5)
In the above embodiment, as shown in FIG. 13, the case where the rotating shaft 81 of the screw conveyor 80 is integrally formed as one shaft has been shown. However, as shown in FIG. The controllable screw conveyor 20 for feeding and the screw conveyor 60 for stirring may be provided separately. In such a configuration, as shown in FIG. 1, the rotation can be independently controlled by the motors 23 and 63.
[0128]
The present invention is not limited to the above-described embodiment, and may be changed as necessary without departing from the scope of the invention.
[0129]
For example, in the description of the embodiment described above, the gate mechanism has been described in connection with the independent control of the screw conveyor for feeding and the screw conveyor for stirring, and the case where more precise feed amount control can be performed, If such precise control of the feed amount is not required, a configuration in which the gate mechanism is omitted from this configuration may be used.
[0130]
Further, the necessary number of stirring material charging ports may be provided as appropriate without being limited by the description of the above embodiment.
[0131]
Regardless of the description of the embodiments so far, a necessary number of feeding unit side coupling units and stirring unit side coupling units may be provided. For example, in the case shown in FIG. 1, the case where one stirring portion side connecting portion provided on the peripheral surface of the screw casing is provided is shown. In this case, the connection length may be adjusted.
[0132]
【The invention's effect】
In the present invention, it is possible to finely adjust the feed amount of the material to be charged, and to set an appropriate feed amount according to the properties of the material.
[0133]
If the feeding unit and the stirring unit are configured separately, space saving during installation can be achieved.
[Brief description of the drawings]
FIG. 1 is a front view showing an overall configuration of a screw conveyor type continuous stirring apparatus of the present invention in a state where a feeding section and a stirring section configured separately are connected in a longitudinal direction.
FIG. 2 is a plan view showing a gravel removal member.
FIG. 3 is an end view showing a rear end side of the screw conveyor type continuous stirring apparatus shown in FIG. 1;
4A is an exploded explanatory view showing an opening / closing mechanism of a gravel removal member, and FIG. 4B is a plan view showing an opening / closing mechanism part of the gravel removal member.
FIGS. 5A and 5B are perspective views showing the main configuration of a gate opening / closing handle, and FIGS. 5B and 5C are front views showing a gate plate; FIGS.
6A is a plan view showing a configuration of a flange surface of a feeding portion side connecting portion, and FIG. 6B is a plan view of a lid provided in an inspection hole.
7A and 7B are front views showing the configuration of a propeller-like spiral blade.
8 is an explanatory view showing a front end side of the screw conveyor type continuous stirring apparatus shown in FIG. 1. FIG.
FIG. 9 is a front view showing a configuration in which a feeding unit and a stirring unit are connected vertically.
FIG. 10 is an explanatory diagram showing the selectivity of the mutual position of the feeding unit and the stirring unit in a configuration in which the feeding unit and the stirring unit are connected vertically.
11A is an explanatory diagram showing a configuration of a stirring unit that can be used in a three-stage configuration, and FIG. 11B is an explanatory diagram showing a case where a feeding unit and a stirring unit are configured in three stages.
FIG. 12A is an explanatory view schematically showing a feed portion in which a feed portion side connecting portion is provided below the feed screw conveyor, and FIG. 12B is a diagram showing a 2 portion using the feed portion shown in FIG. It is explanatory drawing which shows typically the case where it is set as a stage structure.
FIG. 13 is a front view showing a case where the feeding section and the stirring section are not configured separately.
14 is a front view showing the configuration on the distal end side of the rotating shaft in the configuration shown in FIG. 13; FIG.
FIG. 15 is a front view showing a case where the feeding screw conveyor and the agitating screw conveyor are configured separately without configuring the feeding section and the agitating section as separate bodies.
[Explanation of symbols]
10 Hopper
10a Hopper hook
11 Gravel removal material
11a frame
12 Vertical rail
13 Horizontal cross
14 Passing hole
15a hinge
15b hinge
16a hook
16b hook
17a Hinge
17b Hinge
18 pin
18a hole
19 Pin removal prevention member
20 Feed screw conveyor
21 Rotating shaft
21a Termination
22 Spiral feather
23 Motor
30 Screw casing
30a cavity
31 Feeder side connecting part
31a Flange
32 Feeder side connecting part
32a flange
33 Bolt insertion hole
34 lid
35 Stirring material inlet
36 frame
37 lids
40 paddle mechanism
41 motor
42 Rotating shaft
43 paddles
50 Gate mechanism
51 Gate board
52 Male thread
53 Handle
54 Female thread
60 Screw conveyor for stirring
61 Rotating shaft
61a rear end
62 Spiral feather
62a Continuous spiral blade
62b Propeller spiral blade
62c Continuous spiral blade
63 motor
70 Screw casing
71 Stirrer side connecting part
71a Flange
72 Stirrer side connecting part
72a Flange
73 Stirring material inlet
74 Inspection hole
74a lid
75 outlet
75a lid
76 Stirrer side connecting part
76a Flange
77 lid
80 Screw conveyor
81 Rotating shaft
81a Tip side
82 Screw casing
83 Rotating shaft support member
84 Bearing
85 outlet
100 Feeder
200 Stirrer
A Screw conveyor type continuous stirring device

Claims (9)

A feed unit equipped with a screw casing that incorporates a feed screw conveyor for feeding the stirring material and provided with an inlet for the stirring material;
A stirring part equipped with a screw casing with a built-in stirring screw conveyor and a discharge port;
The feeding screw conveyor and the stirring screw conveyor are integrally formed,
A screw conveyor type continuous stirrer characterized in that an openable and closable gate for adjusting a feed amount of the stirring material is provided between the feeding unit and the stirring unit. A feed unit equipped with a screw casing that incorporates a feed screw conveyor for feeding the stirring material and provided with an inlet for the stirring material;
A screw conveyor type continuous agitation device comprising an agitation unit equipped with a screw casing provided with a discharge port and having an agitation screw conveyor independent of the feeding screw conveyor. In the screw conveyor type continuous stirring device according to claim 2,
A screw conveyor type continuous stirrer characterized in that an openable and closable gate for adjusting a feed amount of the stirring material is provided between the feeding unit and the stirring unit. In the screw conveyor type continuous stirring apparatus according to claim 2 or 3,
The feeding unit and the stirring unit are formed separately,
The feeding unit is provided with a feeding unit side coupling unit that couples the feeding unit to the stirring unit,
The stirrer is provided with a stirrer side connecting part for connecting the stirrer to the feed part,
The screw conveyor type continuous stirring device, wherein the screw conveyor type continuous stirring device is used in a state in which the feeding portion side connecting portion and the stirring portion side connecting portion are connected. In the screw conveyor type continuous stirring device according to claim 4,
The feeding part side connecting part is provided at an opening end of a screw casing and a peripheral opening of the screw casing incorporating the feeding screw conveyor,
The screw conveyor type continuous stirring device, wherein the stirring portion side connecting portion is provided at an opening end of a screw casing and a peripheral surface opening portion in which the stirring screw conveyor is incorporated. In the screw conveyor type continuous stirring device according to claim 4,
The feed part side connecting part provided on the peripheral surface of the screw casing incorporating the feed screw conveyor and the stirring part side connecting part provided on the peripheral surface of the screw casing containing the stirring screw conveyor are connected to each other. The screw conveyor type continuous stirring apparatus, wherein the feeding section and the stirring section are provided in a plurality of stages in the vertical direction. In the screw conveyor type continuous stirring apparatus according to claim 5 or 6,
The feeding part side connecting part provided on the peripheral surface of the screw casing incorporating the feeding screw conveyor, and the stirring part side connecting part provided on the peripheral surface of the screw casing containing the stirring screw conveyor,
In a state of being connected to each other, the screw casing containing the feeding screw conveyor and the screw casing containing the stirring screw conveyor are formed in a connecting portion that can select either a parallel arrangement or a cross arrangement. A screw conveyor type continuous stirring device. In the screw conveyor type continuous stirring apparatus according to any one of claims 1 to 7,
The screw conveyor type continuous stirring apparatus, wherein the feeding unit is provided with a hopper as a stirring material charging port, and the hopper is provided with a paddle. In the screw conveyor type continuous stirring apparatus according to claim 8,
The opening surface of the hopper is provided with a gravel removing member having a plurality of passage holes through which a predetermined amount of gravel cannot pass so as to be freely selectable in the opening / closing direction on the opening end side of the hopper. Screw conveyor type continuous stirring device.

Images