JP2003126668A - Double-shaft kneador for viscous fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of agitation by enhancing the moving speed of materials to be kneaded in the horizontal direction. SOLUTION: A first shaft 5 provided with an agitation/carrying part I installed at the one end in a mixing pan 1 having a charging port 2 in the top part and an discharge port 3 in the bottom part, and an agitating-direction changing part II at the other end, and a second shaft 5' provided with the agitation/carrying part I at the other end and the agitation/direction-changing part II at the one end are disposed in parallel to as to rotate in synchronization with each other in the opposite directions by an outside rotation/driving part 9. The agitation/carrying part I and the agitation/direction-changing part II are formed respectively by mounting an outer peripheral mixing paddle 18a or 18b formed of a spirally continuous blade 19a or 19b and an arm 21, and an inner peripheral mixing paddle 25a or 25b formed of a spirally continuous blade 26a or 26b, and an arm 28. In the case of kneading a concrete 16, each blade 19a, 19b, 26a, 26b driven for rotation gives continuously carrying force in the horizontal direction to the concrete 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viscous fluid kneading twin-screw mixer used for kneading ready-mixed concrete, mortar, special concrete, special kneaded materials and other fluids having high viscosity used in the fields of construction and civil engineering in general. It is a thing.

[0002]

2. Description of the Related Art In general, ready-mixed concrete, mortar, special concrete, etc. used in the fields of construction and civil engineering, include cement and required aggregates and water, and if necessary, various admixtures and admixture materials. It is generated by mixing and kneading at a predetermined ratio, but since the above-mentioned green concrete, mortar, special concrete, etc. to be generated becomes a viscous fluid having high viscosity, these objects to be kneaded are kneaded. A biaxial viscous fluid kneading mixer is used as one of the kneading devices for this purpose.

A biaxial mixer for kneading this kind of viscous fluid is shown in FIG.
As shown in (a) and (b), an example of the outline thereof is shown. The discharge port 3 has an opening at the upper end that serves as the charging port 2 and can be opened and closed at the bottom.
(For example, a discharge pan 3 having a gate door 4 that can be opened / closed by an opening / closing drive device (not shown)) is installed, and the mixing pan 1 is provided at two left and right positions of the mixing pan 1 extending in the front-rear direction. 1 shaft 5 and second
The shaft 5'is arranged in parallel with each other, and both ends thereof are rotatably supported by bearings 8. The first shaft 5 is provided with an outer peripheral side mixing paddle 6a and an inner peripheral side mixing paddle 7a for forming the agitating / conveying section I at a large number of locations (8 locations in the figure) at required longitudinal intervals except for the other end. It is attached integrally and a few places at the other end in the longitudinal direction (1 in the figure
Outer peripheral side mixing paddles 6b and inner peripheral side mixing paddles 7b for forming stirrer turning portions II are integrally attached to the second shaft 5 ', and a large number of points in the longitudinal direction except one end are provided on the second shaft 5'. Agitating and transporting part I (8 locations on the figure)
And the outer peripheral side mixing paddle 6a and the inner peripheral side mixing paddle 7a for integrally forming
Stirrer deflection part at a few places (one place in the figure) at one end in the longitudinal direction
The outer peripheral side mixing paddle 6b and the inner peripheral side mixing paddle 7b for forming II are integrally attached, and in the mixing pan 1, the outer peripheral side mixing paddle 6a on the first shaft 5 and the second shaft 5'and The rotation locus of 6b is overlapped by a required dimension at the outer peripheral end so as to interfere with each other, and the projecting end portion on one end side of each of the shafts 5 and 5'is provided with a rotary drive device 10 such as a hydraulic motor or an electric motor.
The shafts 5 and 5 are driven by the driving force of the rotation driving device 10.
′ And a gear box 11 with a built-in power transmission mechanism for synchronously driving the rotation direction in the opposite direction.
Connected to.

In the drawings, a symbol including the letter a indicates that each member to which the symbol is attached is arranged in the agitating / conveying section I, and a symbol including the letter b is assigned the symbol. It is shown that each of the removed members is arranged in the stirring deflection section II.

The outer peripheral side mixing paddle 6a forming the agitating / conveying section I has a long arm 12 extending a required dimension in the radial direction of each shaft 5 or 5 ', and a distal end portion of the arm 12 with respect to the rotational direction. The blades 13a are mounted so as to be inclined at a required angle, and the arms 12 are arranged in the longitudinal direction of the shafts 5 or 5'in order with the mounting angles shifted by 90 degrees in the circumferential direction. , The inner peripheral side mixing paddle 7a forming the agitating and conveying section I
Is at a position facing 180 degrees in the circumferential direction with respect to the mounting position of the outer peripheral side mixing paddle 6a of each shaft 5 or 5 ',
A blade 14 that is inclined at a required angle in the same direction as the blade 13a of the outer peripheral side mixing paddle 6a with respect to the rotation direction.
a is integrally attached via a short arm 15, and the shafts 5 and 5'are shown in FIG. 3B in order to knead the objects to be kneaded in the mixing pan 1.
In the direction as shown by, that is, the outer and inner peripheral mixing paddles 6a and 7a attached to the shafts 5 and 5 ', respectively, from below to above between the two shafts 5 and 5'. When rotating in the passing direction, the kneading target placed in the stirring and conveying section I in the mixing pan 1 is inclined by the inclination of the blade 13a of the outer peripheral side mixing paddle 6a and the blade 14a of the inner peripheral side mixing paddle 7a. , So that they can be conveyed to the side of the stirring deflecting section II along the respective shafts 5 or 5 '.

On the other hand, the outer peripheral side mixing paddle 6b forming the stirring turning portion II is provided at the tip end portion of the long arm 12 extending a required dimension in the radial direction of each shaft 5 or 5'to the rotational direction. A blade 13b that is inclined at a required angle in a direction opposite to the blade 13a of the outer peripheral side mixing paddle 6a of the agitating / conveying unit I is attached, and the other end of the shaft 5 and one end of the shaft 5'are each provided with a base end of an arm. The inner side mixing paddle 7b which forms the stirring turning portion II is
The other end of the shaft 5 and one end of the shaft 5 ′ face the mounting position of the outer peripheral side mixing paddle 6 b at a position 180 degrees in the circumferential direction, and the outer peripheral side mixing paddle of the stirring deflection part II with respect to the rotation direction. 6b blade 13b
The blades 14b inclined by the required angle in the same direction as the above are integrally attached via the short arm 15, and each of the shafts 5 and 5 is knitted in the same manner as above in order to knead the object to be kneaded.
3'is rotated in the direction indicated by arrow X in FIG. 3B, the blade 1 of the outer peripheral side mixing paddle 6b is rotated.
3b and the blade 14b of the inner mixing paddle 7b
The object to be kneaded, which is located in the stirring turning section II, can be extruded to the stirring conveyance section I side along the respective shafts 5 or 5'by the inclination.

The mixing paddles 7a on the inner peripheral side are provided.
And 7b, the rotation loci of the blades 14a and 14b are
The outer diameter of the mixing paddles 6a, 6b attached to the adjacent shafts 5 or 5'has a small diameter that does not interfere with the rotation loci of the blades 13a, 13b. The shafts 5 and 5'are arranged with their phases shifted by 45 degrees in the circumferential direction so that the outer peripheral side mixing paddles 6a and 6b do not come into contact with each other during rotation.

When, for example, concrete 16 is kneaded as an object to be kneaded by using the viscous fluid kneading mixer, the rotational drive transmitted from the rotary drive device 10 via the power transmission mechanism in the gear box 11 When the shafts 5 and 5'are driven to rotate in the direction indicated by arrow X in FIG. 3B, the mixing pan 1 is inserted through the inlet 2 as shown by the alternate long and short dash line in FIG. 3B. Inside, various raw materials 17 such as cement, aggregate, water, and admixtures and admixtures that are mixed as needed are charged, and the stirring and conveying section I attached to both rotating shafts 5 or 5 '.
Outer and inner peripheral mixing paddles 6a and 7a
And the mixing paddles 6b and 7b on the outer peripheral side and the inner peripheral side of the stirrer turning portion II knead the concrete 16 produced as a mixture of the various raw materials 17 while turning it back and forth at the same time, and at the same time, as shown in FIG. ), In the stirring and conveying section I of the first shaft 5 and the second shaft 5 ', the mixing paddles 6a on the outer peripheral side and the inner peripheral side are provided.
And 7a, the concrete 16 located in the stirring and conveying section I is moved in the direction of the stirring turning section II along the respective shafts 5 or 5 ', whereby the concrete 16 is moved to the other end of the shaft 5. Part or shaft 5
When reaching the stirrer deflecting section II provided at one end of the ‘′, in the stirrer deflecting section II, the concrete transported from the stirrer transport section I by the mixing paddles 6b and 7b on the outer peripheral side and the inner peripheral side, respectively. By imparting the movability in the opposite direction with respect to 16, the moving direction of the concrete 16 that has lost its place is changed to the lateral direction, and the adjacent shaft 5 or 5 '
To the agitating and conveying section I of the shafts 5 and 5'and the conveying by the agitating and conveying section I and the agitating and diverting section II of the shafts 5 and 5'as described above is repeated, so that the concrete 16 is horizontally moved in the mixing pan 1. By circulating and moving the concrete 16, the concrete 16 can be stirred and kneaded in the horizontal direction as well.

After that, the concrete 16 which has been kneaded
As shown by the chain double-dashed line in FIG. 3B, the gate door 4 of the discharge port 3 at the bottom of the mixing pan 1 is opened by the opening / closing drive device so that it can be discharged from the discharge port 3 and collected. is there.

[0010]

However, in the above-mentioned conventional biaxial mixer for kneading viscous fluids, the shafts 5 and 5'are provided.
The outer peripheral side and the inner peripheral side of the mixing paddles 6a and 7a forming the agitating and conveying section I are arranged adjacent to each other in the longitudinal direction of each shaft 5 or 5 ', with their mounting angles shifted by 90 degrees in the circumferential direction. Blade 1 of mixing paddle 6a
3a and the blades 14a of the mixing paddle 7a are wide, so that the adjacent mixing paddles 6
The concrete 16 located between a and 7a includes blades 13a and 14 of each mixing paddle 6a and 7a.
Since the horizontal conveying force due to a does not act, the horizontal conveying of the concrete 16 is intermittent, and therefore the moving speed of the concrete 16 in the horizontal direction is slow and the horizontal stirring efficiency is too high. Therefore, it takes a certain amount of time to uniformly knead the introduced raw materials 17, and the horizontal movement speed of the introduced raw materials 17 is slow. Takes time to be evenly dispersed in the mixing pan 1, and it takes time to eliminate the uneven distribution of one introduced material to some extent. Therefore, various raw materials 17 are mixed in the mixing pan 1 as described above. When charging, it was necessary to charge each raw material at a time interval.

Therefore, according to the present invention, the mobility in the horizontal direction of the object to be kneaded in the mixing pan can be significantly increased, the stirring efficiency can be improved, and the stirring time can be shortened as compared with the conventional case. The present invention is intended to provide a biaxial mixer for kneading viscous fluid, which is made possible.

[0012]

In order to solve the above-mentioned problems, the present invention has two shafts arranged in parallel inside a mixing pan having an input port on the upper side and a discharge port which can be opened and closed at the bottom. And a mixing paddle forming an agitating / conveying part is attached to the outer periphery of one end of the first shaft and a mixing paddle forming an agitating deflecting part is attached to the outer periphery of the other end, and the agitating / conveying is provided to the other end of the second shaft. A mixing paddle that forms a part of the mixing paddle and a mixing paddle that forms a stirring deflection portion are attached to the outer circumference of one end, and the outer peripheral ends of the rotation loci of the mixing paddles on the shafts are synchronized so as to interfere with each other by a required amount. So that the shafts can be rotationally driven, and the rotational drive of the shafts causes the mixing paddles of the agitating and conveying parts of the respective shafts to convey the mixture to the direction of the agitating turning part. The object to be kneaded is sent to the agitating and conveying section of the adjacent shaft by the mixing paddle of the agitating and diverting section so that the object to be kneaded can be circulated horizontally in the mixing pan to be kneaded. Angle range in which the mixing paddles, which are attached to the above shafts to form the agitating and conveying section and the agitation deflecting section, continuously spirally and interfere with the mixing paddles of the adjacent shafts during rotation, The blade has a notched shape, and an arm for attaching the blade to the outer circumference of each shaft.

When the shafts are rotationally driven in synchronization with each other in the opposite direction to perform the kneading of the objects to be kneaded, the objects to be kneaded in the mixing pan are turned back by the rotating mixing paddles and stirred and kneaded. At the same time, the kneading target located in the stirring and conveying section of each shaft has a substantially continuous conveying force in the horizontal direction toward the stirring turning section by the spirally continuous blades of the mixing paddle of the stirring and conveying section. Therefore, it is continuously sent to the corresponding agitation deflecting portion side of the shaft. When the object to be kneaded reaches the agitation turning section, the mixing paddle blade of the agitation turning section imparts a conveying force in a direction opposite to that of the agitating and conveying section, so that the object to be kneaded loses its destination. The direction of movement is changed to the lateral direction and it is sent to the stirring and conveying section of the adjacent shafts.By sequentially carrying the stirring and conveying section of each shaft and the stirring changing section, the object to be kneaded is mixed. It is circulated horizontally in the pan, and horizontal stirring and kneading are performed.

Further, an inner peripheral side mixing paddle provided with spirally continuous blades is provided within a required angle range where the blades of the mixing paddle in the stirring / conveying portion and the stirring deflecting portion of each shaft are cut out, and By configuring the outer peripheral end of the rotation track of the peripheral side mixing paddle to be close to the outer peripheral end of the rotation track of the mixing paddle of the adjacent shaft, the kneading target located in the stirring and conveying section The kneading object located in the notch of the blade of the mixing paddle and located in an angular range in which the horizontal conveying force cannot be applied by the blade,
Since the horizontal conveying force can be continuously imparted by the blade continuous in the spiral direction of the inner peripheral side mixing paddle, the horizontal moving speed of the kneading object can be further increased, and the stirring efficiency can be further improved. You can

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1A and 1B show an embodiment of a biaxial mixer for mixing viscous fluid of the present invention.
Similar to the one shown in (b), the first shaft 5 and the second shaft 5 are provided inside the mixing pan 1 having the input port 2 on the upper side and the discharge port 3 provided at the bottom for opening and closing the gate door 4. Two shafts of the shaft 5 ′ are arranged in parallel and both ends thereof are rotatably supported by bearings 8. The first shaft 5 has an agitating / conveying portion on the outer periphery on one end side as shown in FIG. An outer peripheral side mixing paddle 6a and an inner peripheral side mixing paddle 7a for forming I are attached, and a stirring deflection portion is provided on the outer periphery of the other end portion.
An outer peripheral side mixing paddle 6b for forming II and an inner peripheral side mixing paddle 7b are attached, and an outer peripheral side mixing paddle 6a for forming an agitating / conveying section I on the outer periphery on the other end side is attached to the second shaft 5 '. The inner mixing paddle 7a is attached, and the outer mixing paddle 6b and the inner mixing paddle 7b for forming the stirring deflection portion II on the outer circumference of one end are attached, and one end of each shaft 5, 5'is external. Each of the shafts 5 connected to the rotary drive unit 9 of
And 5 ′ can be rotationally driven in synchronism with each other in the opposite direction, the outer peripheral side mixing paddle 6
a, 6b and the inner peripheral side mixing paddles 7a, 7b, instead of the outer peripheral side mixing paddles 18a, 18b in which the blades 19a, 19b are spirally connected, and the blade 26.
The inner peripheral side mixing paddles 25a and 25b in which a and 26b are spirally connected are used, and the outer peripheral side mixing paddles 18a and 18b on the first shaft 5 are used.
And the outer peripheral side mixing paddle 18 on the second shaft 5 '.
Only the portion where a and 18b interfere with each other is cut out.

More specifically, the agitating and conveying section I is provided at one end of the first shaft 5 and the other end of the second shaft 5 ', respectively.
The outer peripheral side mixing paddle 18a to be attached to form the blade is formed at a required angle in the circumferential direction, for example, 45 so that the blade 19a spirally continues over a required angle range in the circumferential direction, for example, 225 degrees. Blade segment 2 shaped to extend in a helical direction over an angular range of degrees
0, and an outer peripheral side paddle unit 22 having a required dimension in the radial direction of the shaft and an arm 21 to which the blade segment 20 is attached on the distal end side. It is installed at five places in the required direction direction, and at five places in the longitudinal direction required space on the other end side excluding one end portion of the second shaft 5 ', while shifting the installation angle from one end side to the other end side by 45 degrees. As a result, the blade segments 20 of each of the five outer peripheral side paddle units 22 attached to the shafts 5 and 5'are continuously arranged in the spiral direction.

The other end of the first shaft 5 and the second
Outer peripheral side mixing paddles 18b to be attached to each of the one ends of the shafts 5'to form the agitating turning portions II.
Is a blade 19b spirally continuous in a direction opposite to the blade 19a of the outer peripheral side mixing paddle 18a of the stirring and conveying section I over a required angular range in the circumferential direction, for example, 90 degrees. A blade segment 23 having a shape extending in a spiral direction opposite to the blade segment 20 of the stirring and conveying section I over an angular range of 45 degrees in the circumferential direction;
An outer peripheral side paddle unit 24 having a required dimension in the radial direction of the shafts 5 and 5 ′ and having an arm 21 to which the blade segment 23 is attached at the tip end thereof is provided at the other end of the first shaft 5 in the longitudinal direction. In two places,
In addition, the second shaft 5'is attached to the shafts 5 and 5'by mounting them at two positions at a required longitudinal interval on one end with the mounting angle shifted from one end to the other end by 315 degrees. Two blade segments 23 of the outer peripheral side paddle unit 24 are arranged continuously in a spiral shape.

In addition, an angle of 225 degrees in the circumferential direction, which includes the notch of the blade 19a of the outer peripheral side mixing paddle 18a in the agitating and conveying section I of the shafts 5 and 5 ', and which faces the outer peripheral side mixing paddle 18a. The inner peripheral side mixing paddle 25a having a continuous blade 26a is provided at a position within the range, and the agitating / conveying section I or the agitating direction of the agitating / conveying portion I of the shaft 5 or 5'where the outer peripheral end of the rotational trajectory of the inner peripheral side mixing paddle 25a is adjacent. In order not to interfere with the rotation locus of each outer peripheral side mixing paddle 18a or 18b of the section II, the inner side in the radial direction of the blade segment 20 of the outer peripheral side paddle unit 22 forming the outer peripheral side mixing paddle 18a of the stirring and conveying section I. The blade segment 27 extending in the spiral direction over an angular range of 45 degrees in the circumferential direction, and the shaft 5 Comprising a short arm 28 extending in the radial direction of 5'five inner circumferential side paddle unit 29
Are attached to the inner peripheral side paddle units at positions opposed to the outer peripheral side paddle units 24 of the stirring and conveying section I while sandwiching the shaft while shifting the mounting angle from the one end side to the other end side by 45 degrees. 29 blade segments 27 are arranged continuously in a spiral manner. Further, the mixing paddles 18b on the outer peripheral side in the stirring deflection portion II of the shafts 5 and 5'and the shafts 5 are
Or, at the position of the angle range of 90 degrees facing each other across 5 ',
The inner peripheral side mixing paddle 25b provided with a continuous blade 26b is rotated by the outer peripheral side mixing paddle 18a of the agitating / conveying section I of the shaft 5, 5'where the outer peripheral ends of the rotation loci of the inner peripheral side mixing paddle 25b are adjacent. An outer peripheral side paddle unit 24 that forms the outer peripheral side mixing paddle 18b of the stirring turning portion II so as not to interfere with the locus.
Of the blade segment 23, which extends radially inward of the blade segment 23 over the angular range of 45 degrees in the circumferential direction, and which extends in the spiral direction opposite to the blade segment 27, and the short arm 28 which extends in the radial direction of the shafts 5, 5 '. By mounting the two inner peripheral side paddle units 31 having the and the outer peripheral side paddle units 24 of the stirring deflection portion II on opposite sides of the shaft 5 or 5 ', respectively, The blade segments 30 of the paddle unit 24 are arranged continuously in a spiral shape.

Each of the outer peripheral side paddle units 22 and 24
And the corresponding inner paddle units 29 and 31
Examples of the mechanism for attaching the shafts 5 or 5'to opposite positions on the outer periphery thereof so as to rotate integrally with the shafts 5 or 5'are, for example, the shafts 5 described above.
The cross-sectional shape of each of the outer peripheral side paddle units 22 and 24 and the inner peripheral side paddle units 29 and 31 on 5 ′ is a non-circular shape (octagon in the figure) such as a polygon or an ellipse, and Semi-cylindrical shape in which the inside can be fitted to the non-circular cross section of the shaft 5, 5 ′ at the base ends of the arms 21 and 28 of the outer paddle units 22 and 24 and the inner paddle units 29 and 31, respectively. Each of the bosses 32 of the outer paddle unit 22 is provided with the arm boss 32 of the outer paddle unit 22 and the arm boss 32 of the inner paddle unit 29, and the arm boss 32 of the outer paddle unit 24 and the inner paddle unit 24. The arm boss portions 32 of 31 are fitted to the outer circumferences of the shafts 5 and 5 ′ from the 180 ° direction, and face each other with the shafts 5 and 5 ′ sandwiched therebetween. Bolts 2 together, by detachably connected by a nut mechanism, each shaft 5 or 5
It can be fixed to the outer periphery of the required position of ‘.

Furthermore, the outer peripheral side paddle unit 22 of the agitating / conveying unit I and the inner portion of the agitating / conveying unit I are provided at the longitudinally required portions of the agitating / conveying unit I on the side of the agitating deflection unit II side. A set of an outer peripheral side paddle unit 22 and an inner peripheral side paddle unit 29 having the same structure as that of the peripheral side paddle unit 29 is provided in the agitating / conveying section I of the shafts 5 and 5 ′ which are adjacent to each other when the outer peripheral side paddle unit 22 rotates. The shafts 5 or 5'are integrally attached to the shafts 5 or 5'arranged so as not to interfere with the rotation of the outer peripheral side mixing paddle 18a. The object to be kneaded, which is respectively conveyed to, can be more reliably sent to the stirring deflection section II by the set of the outer peripheral side paddle unit 22 and the inner peripheral side paddle unit 29.

Reference numeral 33 is a spacer pipe attached to the outer circumference of each shaft 5 and 5'so as to cover the space between the arm boss portions 32 adjacent to each other in the longitudinal direction of each shaft 5 and 5 '. In addition, the same components as those shown in FIGS. 3A and 3B are designated by the same reference numerals.

When the concrete 16 to be kneaded is kneaded using the above-mentioned biaxial mixer for kneading viscous fluid of the present invention, it is rotationally driven as shown by an arrow X in FIG. Rotational driving force transmitted from the rotation driving device 10 of the portion 9 via the power transmission mechanism in the gear box 11 causes the shafts 5 and 5'to move and the mixing paddles to move between the shafts 5 and 5 '. 18a, 18b, 25
In the state in which the a and 25b are rotationally driven so as to pass from the lower side to the upper side, as shown by the alternate long and short dash line in FIG.
When cement, aggregate, water and various raw materials 17 such as admixtures and admixtures that are mixed as needed are fed into the mixing pan 1 through the charging port 2, the outer peripheral sides of both rotating shafts 5 and 5 '. Concrete 1 produced as a mixture of the various raw materials 17 by the mixing paddles 18a, 18b and the inner peripheral side mixing paddles 25a, 25b.
No. 6 is kneaded while being turned up and down, and is simultaneously rotated by the spirally continuous blades 19a and 26a of the mixing paddles 18a and 25a on the outer peripheral side and the inner peripheral side of the stirring and conveying section I of the first shaft 5, respectively. , The concrete 16 located around the one end side of the first shaft 5 is
The first shaft 5 is moved in the direction of the stirring deflection portion II,
When the moved concrete 16 reaches the stirring deflection portion II of the first shaft 5, the mixing paddles 18b and 25b of the mixing paddles 18b and 25b on the outer peripheral side and the inner peripheral side of the stirring deflection portion II, The conveying direction is changed to the lateral direction and the mixture is sent to the stirring and conveying section I of the second shaft 5 '. The concrete 16 located in the stirring and conveying section I of the second shaft 5'is sent to the stirring deflecting section II side of the second shaft 5'by the spirally continuous blades 19a and 26a of the mixing paddles 18a and 25a. The stirring diversion part II
When reaching the point, the blades 19b and 26b of the mixing paddles 18b and 25b of the stirring turning portion II of the shaft 5 '
As a result, the conveying direction is changed to the lateral direction, and the mixture is fed to the stirring and conveying section I of the first shaft 5, and the conveying by the stirring and conveying section I and the stirring and changing section II of the shafts 5 and 5'is performed. By repeating, concrete 16
Is circulated and moved horizontally in the mixing pan 1, so that it is also stirred and kneaded in the horizontal direction.

After that, the concrete 16 which has been kneaded
Is the same as the conventional one, as shown by the chain double-dashed line in FIG.
The gate door 4 of the discharge port 3 at the bottom of the mixing pan 1 is opened by an opening / closing drive device (not shown), so that it can be collected from the discharge port 3.

In the above description, the blade 19a of the mixing paddle 18a on the outer peripheral side of the agitating / conveying section I has the agitating / conveying section I and the agitating / diverting section II of the adjacent shaft 5 or 5'when rotating.
Outer side mixing paddles 18a and 18b
Since it has a shape that spirally continues over 225 degrees in the circumferential direction in which only the portion that interferes with is cut, it is horizontal with respect to the concrete 16 located in the stirring and conveying section I as the outer peripheral side mixing paddle 18a rotates. The conveying force in the direction can be applied almost continuously, and therefore, the moving speed of the concrete 16 in the mixing pan 1 in the horizontal direction can be significantly increased as compared with the conventional case. The efficiency can be increased, the time required until the various raw materials 17 that have been added are uniformly kneaded can be shortened, and the various raw materials 17 that have been input can be evenly dispersed in the mixing pan 1 in a short time. Therefore, the various raw materials 17 can be charged at one time, which also reduces the time required for kneading the concrete 16. It becomes possible to achieve condensation. or,
The outer peripheral side mixing paddle 18 in the stirring and conveying section I
Since the inner peripheral side mixing paddle 25a is provided so as to include the spirally continuous blades 26a in the required angular range in the circumferential direction which is the cutout portion of the blade 19a of a, the outer peripheral side mixing paddle 18a is Blade 19
Since the horizontal conveying force can be imparted to the concrete 16 located in a portion where the horizontal conveying force cannot be imparted by a by rotating the blade 26a of the inner peripheral side mixing paddle 25a, The movement in the direction can be further continuously performed, and the stirring efficiency can be further improved.

The present invention is not limited to the above-described embodiment, but the angular range in which the blades 19a of the mixing paddle 18a on the outer peripheral side of the agitating / conveying section I are continuous in the spiral direction, and the agitation deflecting section II. The angular range in which the blade 19b of the outer peripheral side mixing paddle 18b is continuous in the reverse spiral direction is determined by synchronizing the first and second shafts 5 and 5'according to the inclination angle of each blade 19a, 19b with respect to the rotation direction. The angle may be increased or decreased as long as only the angular range that does not interfere with the rotation of the outer peripheral side mixing paddles 18a and 18b of the adjacent shaft 5 or 5'when rotated in the opposite direction is cut out. Outer peripheral side mixing paddle 18a and inner peripheral side mixing paddle 25 of the transport section I
a is a spiral formed by arranging five outer peripheral paddle units 22 each having a blade segment 20 having an angle range of 45 degrees in the circumferential direction and five inner peripheral paddle units 29 each having a blade segment 27 having a similar angle range. Blades 19a or 26a are formed in a circular shape, while the outer peripheral side mixing paddle 18b and the inner peripheral side mixing paddle 25b of the stirring deflection portion II each have an outer peripheral side paddle unit having a blade segment 23 in the angular range of 45 degrees in the circumferential direction. 24 and the inner peripheral side paddle unit 31 having the blade segment 30 in the same angle range is shown as forming the blade 19b or 26b that is continuous in a spiral shape by providing two consecutive paddle units 31.
In the paddle units 22, 24, 29 and 31, the respective blade segments 20, 23, 27 and 30 have different angular ranges corresponding to the corresponding mixing paddles 18a, 18a.
b, 25a and 25b blades 19a, 19b, 26
If the desired angle ranges for a and 26b are equally divided into a plurality of angles, the number of paddle units to be installed may be freely set according to the number of divisions.
(A) As shown in (b), the stirring / conveying section I and the stirring / diverting section
Each of the mixing paddles 18a and 1 on the outer peripheral side and the inner peripheral side of II
8b and 25a and 25b with respective blades 19a
And 19b and 26a and 26b are blade segments 2
0, 23, 27, and 30 may be formed as a single member that extends spirally instead of as an aggregate formed by continuously arranging. Concrete 16 was exemplified as the object to be kneaded. Adopted for mortar and special concrete used in general construction and civil engineering fields, special kneaded materials, and biaxial mixers used for kneading any viscous fluid other than construction and civil engineering fields, as long as it is a highly viscous fluid that requires It goes without saying that various changes can be made without departing from the scope of the present invention.

[0027]

As described above, according to the biaxial mixer for kneading viscous fluids of the present invention, the two inside the mixing pan having the input port on the upper side and the discharge port which can be opened and closed at the bottom portion are provided.
The shafts are arranged in parallel, a mixing paddle for forming a stirring and conveying section is attached to the outer periphery of one end of the first shaft, and a mixing paddle for forming a stirring deflection section is attached to the outer periphery of the other end of the first shaft. A mixing paddle that forms a stirring and conveying section is attached to the outer circumference of the end side, and a mixing paddle that forms a stirring deflection section is attached to the outer circumference of one end, and the outer peripheral ends of the rotation trajectory of the mixing paddle on each shaft are the required amount. The kneading target is conveyed in the direction of the agitation changing section by the mixing paddle of the agitating and conveying section of each shaft by the rotational drive of each shaft so that the kneading target is agitated and diverted. The mixing paddle of this part sends it to the agitating / conveying part of the adjacent shaft to circulate the above-mentioned kneading object horizontally in the mixing pan. In a viscous fluid kneading twin-screw mixer that can be moved and kneaded, each mixing paddle for attaching the above-mentioned respective shafts to form an agitation conveying section and an agitation diverting section is spirally continuous and at the time of rotation. Since the blade is formed by cutting out a required angle range portion that interferes with the mixing paddle of the adjacent shaft, and an arm for attaching the blade to the outer circumference of each shaft, each shaft is rotationally driven and kneaded. With the kneading of the object, the mixing paddle blades forming the agitating / conveying section of each shaft act on the object to be kneaded in the agitating / conveying section in a substantially continuous direction in the horizontal direction. Therefore, the horizontal circulation speed of the kneading target in the mixing pan can be significantly increased, Since it is possible to increase the stirring efficiency of the object to be kneaded, it is possible to shorten the time required until the various substances charged into the mixing pan from the charging port are uniformly kneaded, and more than one charging port can be used. When the substances are added, each substance can be evenly dispersed in the mixing pan in a short time, so that it is possible to add and knead the plurality of substances at once, which also reduces the time required for kneading. It has an excellent effect that it is possible to reduce the length, and within the required angle range where the blades of the mixing paddle in the stirring / conveying portion and the stirring / diverting portion of each shaft are notched, a spirally continuous blade is provided. The inner peripheral mixing paddle is provided so that the outer peripheral end of the rotation track of the inner peripheral mixing paddle is close to the outer peripheral end of the rotating track of the mixing paddle of the adjacent shaft. By being configured to be in contact, with respect to the kneading object located in the stirring and conveying section, even for the kneading object located in an angular range in which the horizontal conveying force cannot be imparted by the mixing paddle on the outer peripheral side. Since the horizontal conveying force can be imparted by the blade of the inner peripheral side mixing paddle, it is possible to further increase the horizontal moving speed of the kneading target and further improve the stirring efficiency. Be effective.

[Brief description of drawings]

FIG. 1 shows an embodiment of a biaxial mixer for kneading viscous fluid of the present invention, in which (a) is a partially cutaway schematic plan view,
(B) is a view taken along the line AA of (A).

FIG. 2 shows another embodiment of the present invention, in which (a)
Is a partially cutaway schematic plan view, and (b) is a view taken along the line BB of (a).

3A and 3B schematically show an example of a conventional biaxial mixer for kneading viscous fluid, in which FIG. 3A is a partially cut plan view and FIG. 3B is a view taken along the line C-C of FIG.

[Explanation of symbols]

I Stirring / conveying section II Stirring / diverting section 1 Mixing pan 2 Input port 3 Discharge port 5 First shaft 5'Second shaft 16 Concrete (object to be mixed) 18a, 18b Outer peripheral side mixing paddles (mixing paddles) 19a, 19b Blade 21 Arms 25a, 25b Inner peripheral side mixing paddles 26a, 26b Blades 28 Arms

Claims (2)

[Claims] 1. Two shafts are arranged in parallel inside a mixing pan having an inlet on the upper side and an outlet that can be opened and closed at the bottom, and a stirring and conveying section is formed on the outer periphery of one end of the first shaft. A mixing paddle is attached to the outer circumference of the other end, a mixing paddle is attached to the outer circumference of the other end, and a mixing paddle is attached to the outer circumference of the other end of the second shaft. A mixing paddle that forms a section is attached, and the outer peripheral ends of the rotation loci of the mixing paddles on the respective shafts can be rotationally driven in synchronization so as to interfere with each other by a required amount. The kneading target conveyed in the direction of the stirring changing section by the mixing paddle of the stirring and conveying section of the shaft is adjacent to the mixing paddle of the stirring and changing section. A biaxial mixer for viscous fluid kneading, in which the object to be kneaded is circulated horizontally in a mixing pan for kneading by being sent to an agitating / conveying section of a shaft. Each of the mixing paddles for forming the conveying section and the stirring deflection section is a blade having a shape in which a required angle range portion which is continuous in a spiral and interferes with the mixing paddle of the adjacent shaft at the time of rotation is cut out, and the blade is described above. A biaxial mixer for kneading a viscous fluid, characterized by comprising an arm for attaching to the outer circumference of each shaft. 2. An inner peripheral side mixing paddle provided with spirally continuous blades is provided within a required angle range where the blades of the mixing paddle in the stirring / conveying portion and the stirring deflecting portion of each shaft are cut out, and 2. The biaxial mixer for mixing viscous fluid according to claim 1, wherein the outer peripheral end of the rotation locus of the peripheral mixing paddle is arranged close to the outer peripheral end of the rotation locus of the mixing paddle of the adjacent shaft.