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KR20150130943A - Concrete mixer and ready-mixed concrete producing apparatus using the same - Google Patents

Concrete mixer and ready-mixed concrete producing apparatus using the same Download PDF

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Publication number
KR20150130943A
KR20150130943A KR1020150067116A KR20150067116A KR20150130943A KR 20150130943 A KR20150130943 A KR 20150130943A KR 1020150067116 A KR1020150067116 A KR 1020150067116A KR 20150067116 A KR20150067116 A KR 20150067116A KR 20150130943 A KR20150130943 A KR 20150130943A
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South Korea
Prior art keywords
paddle
kneading shaft
kneading
blades
blade
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KR1020150067116A
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Korean (ko)
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KR101759387B1 (en
Inventor
마코토 다무라
후토시 야기시타
다다시 이마이
고스케 후지와라
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고요 기카이 산교 가부시키가이샤
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B01F7/048—

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  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Provided is a concrete mixer capable of being effectively mixed by increasing a shear effect for a mixing material. The concrete mixer (8) of the present invention comprises: a mixer main body (10) capable of receiving a plurality of materials which are to be a raw material of ready-mixed concrete; a first mixing shaft (11) which has a nearly cylindrical shape and is arranged inside the mixer body (10) to be rotatable; and first to third stirring pads (24-26) which include an arm (29) connected to the first mixing shaft (11), and blades (30) installed at a front end of the arm (29), and mix a plurality of materials. The blades (30) are continuously disposed in a spiral shape to surround the first mixing shaft (11). A valley unit (Q) having a narrower interval between the blades (30) by progressing in a direction away from the first mixing shaft (11) is provided between the blades (30) adjacent to each other among the blades (30) which are continuously arranged.

Description

TECHNICAL FIELD [0001] The present invention relates to a concrete mixer, and a concrete concrete mixer,

The present invention relates to a concrete mixer and an apparatus for manufacturing a raw concrete using the same.

Conventionally, raw concrete is manufactured by a plant plant as a raw concrete production apparatus. A concrete mixer has been used in a plant plant (see, for example, Patent Document 1). The concrete mixer kneads each material such as gravel as a coarse aggregate, sand as a fine aggregate, cement, water and an admixture.

11 is a view showing an example of the internal structure of a conventional concrete mixer. The concrete mixer (50) has a mixer main body (51). The concrete mixer 50 has two kneading shafts 52, 53. The kneading shafts 52 and 53 are provided so as to be rotatable in the mixer main body 51. A plurality of paddles 54 are provided on the kneading shafts 52, 53. The paddle 54 kneads the respective materials. Each paddle 54 consists of an arm 55 and a blade 56. The arm 55 is connected to each of the kneading shafts 52, 53. The blade 56 is provided at the tip of the arm 55.

And a plurality of blades 56 are continuously connected to each other. The continuous blades 56 are arranged spirally and band-like so as to surround the peripheries of the kneading shafts 52 and 53. Motors 57 and 58 are provided outside the mixer main body 51. The motors 57 and 58 rotate the kneading shafts 52 and 53.

In the concrete mixer 50, the above-mentioned respective materials are put into the mixer main body 51. In the concrete mixer 50, the kneading shafts 52 and 53 are rotated in the circumferential direction by the motors 57 and 58. Thus, each material is mixed by the blade 56. [ In the concrete mixer 50, the blades 56 are continuously arranged in a strip shape. Therefore, the kneaded material smoothly moves in the mixer main body 51 by the blade 56 in a relatively short time.

Usually, the viscosity of the material is small immediately after the start of kneading. When each material is agitated and the kneading time elapses to some extent, the material becomes viscous. In the concrete mixer 50, the highly viscous kneaded material is not lifted by the blades 56 arranged in a band shape. The highly viscous kneaded material moves mainly along the side surface of the blade 56. [ The conventional concrete mixer 50 has a problem that the shearing effect on the highly viscous kneaded product is small.

Further, when the material is carried along the side surface of the blade 56, the material (see reference symbol M) tends to roll on the bottom of the mixer main body 51 and on the side of the blade 56 as shown in Fig. 12 . When the rolling distance of the material becomes longer, the volume of the material becomes larger. Thus, a so-called dough mass is generated. The lump of dough causes the quality of raw concrete to deteriorate. Therefore, in the concrete mixer 50, it is necessary to suppress the rolling of the material as much as possible.

Patent Document 1: JP-A-2008-212888

The present invention has been made under the above circumstances. SUMMARY OF THE INVENTION It is an object of the present invention to provide a concrete mixer capable of effectively mixing and kneading a material to be kneaded with high stirring and shearing effects. It is another object of the present invention to provide a raw concrete production apparatus using the concrete mixer.

The concrete mixer provided by the first aspect of the present invention comprises a mixer main body capable of accommodating a plurality of materials as raw materials for raw concrete, a kneading shaft rotatably disposed in the mixer main body, Wherein the agitation paddle has an arm connected to the kneading shaft and a first blade provided at a tip of the arm, the agitating paddle having a plurality of agitating paddles for agitating the agitating paddle, Wherein the first blades are arranged continuously in a spiral manner so as to surround the kneading shaft and are arranged between adjacent first blades among the first blades continuously arranged, And a trough portion in which the distance between the blades is narrowed.

In the concrete mixer of the present invention, the first blade may be formed in a substantially bow shape, and the valley may be formed by facing the end faces of the first blades continuously disposed.

In the concrete mixer of the present invention, it is preferable that at least one of the plurality of agitating paddles has an axially-shaped second blade at an axisymmetric position of the agitating paddles of the agitating paddles, And a first shearing paddle for shearing the water may be provided.

In the concrete mixer of the present invention, an axially symmetric position of the kneading shaft of the agitation paddle provided on one side of the mixer main body in the direction of the kneading axis among the plurality of agitation paddles, And a first dispensing paddle for dispensing the kneaded material to the outside of the rotation range of the third blade may be provided.

The concrete mixer of the present invention may further comprise a stirring paddle provided on the kneading shaft, wherein axially symmetric positions of the kneading shafts of the stirring paddles have a substantially axially-shaped second blade, And a second shearing paddle for shearing the kneaded product after kneading the kneaded product.

The concrete mixer of the present invention is characterized in that it has an arm provided on the kneading shaft and connected to the kneading shaft and a substantially planar third blade installed along the side surface of the arm, And a second delivery paddle for delivering the kneaded product to the outside of the rotation range of the second delivery paddle, wherein the axially symmetrical position of the kneading shaft of the second delivery paddle has the same configuration as the second delivery paddle, And the third delivery paddle for delivery to the outside of the rotation range of the third blade may be provided.

In the concrete mixer of the present invention, two kneading shafts are juxtaposed in the mixer main body. One of the mixing paddles, one of the stirring paddles, The second feeding paddle and the second feeding paddle are arranged in the order of the first feeding paddle and the second feeding paddle while the other kneading shaft is provided with the second feeding paddle from the one side face of the mixer main body, The paddles and the plurality of stirring paddles may be arranged in this order.

In the concrete mixer of the present invention, the second dispensing paddles are provided at symmetrical positions of the other kneading shafts in parallel to the one kneading shaft provided with the first dispensing paddles, and the first dispensing paddles It is preferable that the dispensing paddle and the second dispensing paddle provided on the other kneading shaft rotate about the axis of the kneading shaft in the opposite direction while maintaining the phase difference of 90 degrees.

The raw concrete production apparatus provided by the second aspect of the present invention is characterized by having the concrete mixer provided by the first aspect of the present invention.

According to the present invention, the plurality of first blades are arranged spirally and continuously so as to surround the kneading shaft. Among the plurality of first blades, a trough portion is provided between the adjacent first blades. The space near the valley flows irregularly as the stirring paddles rotate. The material also moves more irregularly depending on the space. Therefore, the concrete mixer of the present invention can increase the stirring and shearing effect on the material to be kneaded, and can efficiently knead the kneaded material.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic block diagram of a raw concrete production apparatus to which a concrete mixer of the present invention is applied. FIG.
2 is a front view of a concrete mixer.
3 is a side view of the concrete mixer.
4 is a top view of a concrete mixer.
5 is a perspective view showing the internal structure of the concrete mixer.
Fig. 6 is a view showing the first to third stirring paddles, viewed from the axial direction of the kneading shaft.
7 is a view showing the rotation states of the first to third stirring paddles.
Fig. 8 is a schematic diagram showing the overlapping of the respective states of the first to third stirring paddles.
9 is a view for explaining the action of the first to third stirring paddles.
10 is a view for explaining the action of the first to third delivery paddles.
11 is a view showing the internal structure of a conventional concrete mixer.
12 is a view for explaining the operation of a conventional concrete mixer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a schematic configuration of a raw concrete production apparatus (a plant for planting). FIG. The concrete mixer of the present invention is applied to the gypsum plant 1 shown in Fig. The guiding plant 1 is a device for producing raw concrete. The constituent material of the raw concrete is gravel (coarse aggregate), sand (fine aggregate), cement, water and admixture (hereinafter, collectively referred to as "kneaded product"). The guiding plant 1 is provided with a belt conveyor 2. The belt conveyor 2 carries the aggregate from a storage silo (not shown) for storing the aggregate. Aggregates conveyed by the belt conveyor 2 are distributed to a plurality of reservoirs 4 by a turn chute 3.

A plurality of weighing hoppers (5) are provided below the plurality of reservoirs (4). The weighing hopper 5 weighs each material discharged from the reservoir 4. A water storage tank (not shown) is provided inside the guiding plant 1. Water reservoir, store water. On the lower side of the water storage tank, a water metering hopper 6 is provided. The water metering hopper 6 weighs water.

On the lower side of each weighing hopper 5, a raw material chute 7 is provided. The raw material chute 7 collects each raw material discharged from each weighing hopper 5. On the downstream side of the raw material chute 7, a concrete mixer 8 is provided. Each material is discharged from the raw material chute 7. The water is sent out from the water metering hopper 6. The concrete mixer 8 kneads each material and water. A concrete hopper 9 is provided at the bottom of the concrete mixer 8. The concrete hopper 9 puts the raw concrete produced by mixing in the concrete mixer 8 into an agitator car (mixer car, not shown).

2 is a front view of the concrete mixer 8. Fig. 3 is a side view of the concrete mixer 8. Fig. 4 is a top view of the concrete mixer 8. Fig. 5 is a perspective view showing the internal structure of the concrete mixer 8. As shown in Fig. In Fig. 4, the ceiling of the mixer main body 10 (described later) is omitted.

The concrete mixer 8 kneads gravel, sand, cement, water and an admixture. The concrete mixer 8 has a mixer main body 10 as shown in Figs. The mixer body 10 has a desired size. Inside the mixer body 10, a first kneading shaft 11 and a second kneading shaft 12 are rotatably disposed. The first kneading shaft 11 and the second kneading shaft 12 are formed in a substantially cylindrical shape extending in a predetermined direction. The first kneading shaft 11 and the second kneading shaft 12 rotate in directions opposite to each other. For example, the first kneading shaft 11 rotates in the clockwise direction (see arrow C1 in Fig. 5). The second kneading shaft 12 rotates in the counterclockwise direction (see arrow C2 in Fig. 5).

The first kneading shaft 11 is rotationally driven by the first drive motor 13 and the first reduction gear 15. The first drive motor 13 and the first reduction gear 15 are attached to the front face of the mixer main body 10. On the other hand, the second kneading shaft 12 is rotationally driven by the second drive motor 14 and the second reduction gear 16. The first drive motor 13 serves as a drive source for rotation of the first kneading shaft 11. The second driving motor 14 serves as a driving source of rotation of the second kneading shaft 12. The first reduction gear 15 changes the driving force of the first drive motor 13. The second reduction gear 16 changes the driving force of the second drive motor 14. [

A V-pulley (not shown) is mounted on the output shaft of the first drive motor 13 and the input shaft of the first reduction gear 15. A V-pulley (not shown) is mounted on the output shaft of the second drive motor 14 and the input shaft of the second reduction gear 16. Each V-pulley is provided with a V-belt (not shown). The output shaft of the first reduction gear (15) is connected to the first kneading shaft (11). The output shaft of the second reduction gear 16 is connected to the second kneading shaft 12. The V-pulleys and the V-belts are covered with the first cover 17 and the second cover 18.

With this configuration, the driving force of the first drive motor 13 is transmitted to the first reduction gear 15. The driving force of the second drive motor 14 is transmitted to the second reduction gear 16. [ The output of the first reduction gear 15 is transmitted to the first kneading shaft 11. The output of the second reduction gear 16 is transmitted to the second kneading shaft 12. Thus, the first kneading shaft 11 and the second kneading shaft 12 are rotationally driven.

3, reference numeral 19 denotes a water supply port for water dispensed from the water metering hopper 6. [ Reference numeral 20 denotes a maintenance window that can be opened and closed. A counter piece (not shown) is mounted in the mixer main body 10 on each of the kneading shafts 11, 12. In the following description, the kneading shafts 11 and 12 are referred to as including the counter piece.

The first paddle module 21, the second paddle module 22, and the third paddle module 23 are provided on the first kneading shaft 11, respectively. The first paddle module 21, the second paddle module 22 and the third paddle module 23 are also provided on the second kneading shaft 12. [ The first paddle module 21, the second paddle module 22 and the third paddle module 23 have paddles of different shapes. Here, the paddle module refers to a paddle group composed of a plurality of paddles (to be described later in detail).

The first paddle module 21 efficiently stirs and shear the kneaded product. The first paddle module 21 suppresses " clouds of material " or performs " material detachment " well. Here, " cloud of material " means that the material is rolled at the bottom of the mixer body 10. [ The term " withdrawal of material " means that the material moves out of each paddle (or each arm).

The first paddle module 21 includes a first agitation paddle 24, a second agitation paddle 25 and a third agitation paddle 26, a first shearing paddle 27, And a paddle 28 for padding. The first agitating paddle 24, the second agitating paddle 25 and the third agitating paddle 26 mainly stir and shear the kneaded product. The first agitating paddle 24, the second agitating paddle 25 and the third agitating paddle 26 are composed of an arm 29 and a blade (first blade) 30, respectively. The arms 29 are connected to the first kneading shaft 11, respectively. The blade (30) is provided at the tip of the arm (29).

The arms 29 are provided at a predetermined interval in the axial direction of the first kneading shaft 11. As shown in Fig. 6, the arms 29 extend in the centrifugal direction at an angle of about 90 degrees as viewed from the axial direction of the first kneading shaft 11. As shown in Fig. 6, only the first agitating paddle 24, the second agitating paddle 25 and the third agitating paddle 26 are shown, and the other paddles are omitted.

The blade 30 is formed of a flat plate having a substantially bow shape. More specifically, the blade 30 is made up of two individual blades. The blade 30 has a configuration in which one wide end face of each individual blade is joined. The blade 30 has a relatively long length in the width direction as compared with the conventional configuration. As a result, the number of the arms 29 for attaching the blade 30 is reduced. The blade 30 may be formed integrally with two individual blades.

4, the first paddle module 21 includes three stirring paddles 24 including a first stirring paddle 24, a second stirring paddle 25, and a third stirring paddle 26, And the first agitating paddle 24 is provided in the vicinity of the inner end face of the mixer main body 10 on the first drive motor 13 side. The first paddle module 21 is provided in the order of the second agitation paddle 25 and the third agitation paddle 26 in the leftward direction as shown in Fig.

The plurality of blades 30 of the first agitating paddle 24, the second agitating paddle 25 and the third agitating paddle 26 are connected to each other through the first kneading shaft 11, As shown in Fig. As shown in Fig. 6, the plurality of blades 30 are formed in an arc shape on the outer side in the axial direction of the first kneading shaft 11. As shown in Fig. The plurality of blades 30 has a trough portion in which the distance between the blades 30 becomes narrower between the adjacent blades 30 in the direction away from the first kneading shaft 11 Reference). Here, the valley portion is approximately at right angles in Fig. The valley may be acute or obtuse.

The first shearing paddle 27 shears mainly the kneaded product. The first shearing paddle 27 is provided axially symmetrically with respect to the second stirring paddle 25 with respect to the first kneading shaft 11. The first shearing paddle 27 is composed of an arm 29 and a blade (second blade) 31. The arm 29 is connected to the first kneading shaft 11. The blade (31) is provided at the tip of the arm (29). The blade 31 is formed to be approximately axially shaped when viewed from the side. The tip of the approximately ax-shaped blade 31 is directed to the rotating direction of the first kneading shaft 11. [ The blade 31 is slightly smaller in side surface area than the blades 30 of the first agitation paddle 24, the second agitation paddle 25 and the third agitation paddle 26.

The first delivery paddle 28 delivers the kneaded material to the outside of the rotation range of a blade (third blade) 32 to be described later (to be described later in detail). The first dispensing paddle 28 is disposed axially symmetrically with respect to the first stirring paddle 24 with respect to the first kneading shaft 11. The first delivery paddle 28 consists of an arm 29 and blades 32, 33. The arm 29 is connected to the first kneading shaft 11. The blades 32, 33 are installed along the arm 29. The blade (32) is provided at the tip end side of the arm (29). The blade 32 is approximately axially shaped and also substantially flat plate-shaped. The blade 33 is provided on the first kneading shaft 11 side and is formed in a substantially rectangular shape.

The first agitation paddle 24, the second agitation paddle 25 and the third agitation paddle 26 are provided with a blade 30 at the tip of the arm 29. On the other hand, in the first delivery paddle 28, the blades 32 and 33 are provided on the entire arm 29. [

The second paddle module 22 performs agitation and shearing of the kneaded product. The second paddle module 22 is arranged in the left direction as shown in Fig. 4 than the first paddle module 21. [ The second paddle module 22 is composed of a fourth stirring paddle 34 and a second shearing paddle 35. The fourth agitation paddle 34 has the same configuration as the first agitation paddle 24. The second shearing paddle 35 has the same configuration as that of the first shearing paddle 27.

The third paddle module 23 sends out the kneaded material to the outside of the rotation range of the blade (third blade) 32 (details will be described later). The third paddle module 23 is disposed further in the leftward direction than the second paddle module 22 shown in Fig. The third paddle module 23 is composed of a second sending paddle 36 and a third sending paddle 37. The second delivery paddle 36 and the third delivery paddle 37 are axially symmetrical with respect to the first kneading shaft 11. The second sending paddle 36 and the third sending paddle 37 have the same configuration as the first sending paddle 28. [ The second delivery paddle 36 and the third delivery paddle 37 each have an approximately axially-shaped blade 32 and a substantially rectangular blade 33, respectively.

The second kneading shaft 12 includes the first paddle module 21, the second paddle module 22 and the third paddle module 23 in the same manner as the first kneading shaft 11. However, in the second kneading shaft 12, the arrangement of the first paddle module 21, the second paddle module 22 and the third paddle module 23 is different from that of the first kneading shaft 11. That is, in the first kneading shaft 11, the first paddle module 21, the second paddle module 22, and the third paddle module 23 are arranged in this order from the first drive motor 13 side. On the other hand, in the second kneading shaft 12, the third paddle module 23, the second paddle module 22 and the first paddle module 21 are arranged in this order from the second drive motor 14 side.

When the arrangement positions of the respective paddles of the first kneading shaft 11 and the second kneading shaft 12 are compared with each other, the first stirring paddle 24 of the first mixing shaft 11, The second dispensing paddle 36 and the third dispensing paddle 37 are disposed at symmetrical positions of the second kneading shaft 12 with respect to the dispensing paddle 28 in parallel. The fourth agitating paddle 34 and the second shearing paddle 35 are disposed symmetrically with respect to the second agitating paddle 25 of the first agitating shaft 11 in parallel to the second kneading shaft 12, Respectively.

The second agitating paddle 25 is disposed at the symmetrical positions of the second agitating paddle 34 and the second sheath paddle 35 of the first kneading shaft 11 in parallel to each other. And a first shearing paddle 27 are disposed. The first agitating paddle 24 and the second agitating paddle 24 are disposed at symmetrical positions of the second kneading shaft 12 with respect to the second delivering paddle 36 and the third delivering paddle 37 of the first kneading shaft 11, And a first delivery paddle 28 are disposed.

Next, the operation of the concrete mixer 8 will be described.

Gravel, sand, cement, water, and admixture are put into the concrete mixer 8 from the raw chute 7 and the water metering hopper 6, respectively. In the concrete mixer 8, their kneading starts. Specifically, the first drive motor 13, the second drive motor 14, the first reducer 15, and the second reducer 16 are driven. By rotating the first kneading shaft 11 and the second kneading shaft 12, the material is kneaded. At this time, as shown in Fig. 5, the first kneading shaft 11 rotates clockwise (see C1). The second kneading shaft 12 rotates counterclockwise (see C2).

Hereinafter, the kneading action around the first kneading shaft 11 will be mainly described. The kneading action around the second kneading shaft 12 is also performed in the same manner. In the concrete mixer 8, in the respective blades 30 of the first agitation paddle 24, the second agitation paddle 25 and the third agitation paddle 26 of the first paddle module 21, And a valley portion Q on the inner surface of the first kneading shaft 11 side. Therefore, in the concrete mixer 8, agitation and shearing of the kneaded product can be efficiently performed.

7 is a view showing a state in which the first agitation paddle 24, the second agitation paddle 25 and the third agitation paddle 26 are rotated from the first drive motor 13 side. Fig. 7 shows a state in which the first kneading shaft 11 and the second kneading shaft 12 are rotated by, for example, about 22.5 degrees (refer to (a) to (d)). Fig. 8 is a schematic diagram in which inner surfaces in the respective states of the first agitation paddle 24, second agitation paddle 25 and third agitation paddle 26 shown in Fig. 7 are overlapped. The dotted line in Fig. 8 shows the inner side of each paddle.

In these figures, for example, the first stirring paddle 24, the second stirring paddle 25, and the second stirring paddle 25 are provided at the bottom of the mixer main body 10 on the first kneading shaft 11 side The valley portion Q of the blade 30 moves with the elapse of time with reference to the rotation of the third stirring paddle 26 and the rotation of the third stirring paddle 26 as shown in Figs. Further, the space in the vicinity of the valley (Q) also moves with the lapse of time. Therefore, in the vicinity of the valley (Q), there is a space to move along the side surface of the blade (30) or to move beyond the valley (Q) of the blade (30). That is, the space in the vicinity of the valley (Q) flows anomalously and causes so-called turbulence.

Fig. 9 is a diagram showing the movement of the material in the valley portion Q. Fig. When the first agitating paddle 24, the second agitating paddle 25 and the third agitating paddle 26 are rotated, the space in the vicinity of the valley Q flows irregularly. Therefore, the material in the space can be transported along the blade 30 (see M1 in FIG. 9) or carried over the valley Q of the blade 30 (see M2 in FIG. 9) do. As the material is conveyed by the blade 30 as described above, the kneaded material of the material is agitated and the first kneading shaft 11 crosses the valley portion Q of the blade 30 so as to cross the kneaded material. The end face of the blade 30 rotating around effectively shears the kneaded product. In Fig. 9, for the sake of convenience of explanation, the material is shown schematically, and the mechanism members partially different from each other are omitted.

In the construction of the conventional concrete mixer 50, as shown in Fig. 12, the blades 56 are arranged in a band shape. In the concrete mixer 50, the trajectory of the inner surface of the blade 56 viewed from the side of the drive motor 57 when the paddle 54 is rotated becomes substantially circular (see the dotted line L1 in Fig. 12). Therefore, the space moved by the blade 56 is mainly moved along the side surface of the blade 56.

On the other hand, in the bottom portion U (see Fig. 8) of the mixer main body 10, the space in the vicinity of the valley portion Q flows irregularly with the lapse of time. Therefore, the material also moves more irregularly depending on the space.

Normally, immediately after the start of kneading, the material is stirred because it is less viscous. Thereafter, when the kneading time has elapsed to some extent and the material becomes viscous, the material is sheared. In the concrete mixer 8, since the space near the valley (Q) flows irregularly, stirring and shearing of the kneaded material can be performed almost simultaneously. Therefore, stirring and shearing of the kneaded product can be performed efficiently, and the kneading effect of the kneaded product can be further enhanced.

In the conventional configuration, the material is rolled along the side surface of the blade 56 to generate a " dough mass ". In the concrete mixer 8, the material moves as the space in the vicinity of the valley Q flows irregularly with the lapse of time. Therefore, the concrete mixer 8 can greatly suppress the possibility of generating " dough masses ".

In the concrete mixer 8, the size of the blade 30 is relatively large. Therefore, in the concrete mixer 8, the number of the arms 29 is smaller than in the conventional structure. As a result, the amount of material passing between the arm 29 and the arm 29 increases, that is, " material detachment " can be improved.

The concrete mixer 8 is provided with a first shearing paddle 27 on the axis of the first kneading shaft 11 in symmetry with respect to the second stirring paddle 25. [ The concrete mixer 8 is likewise provided with a second shearing paddle 35 axially symmetrical to the first mixing shaft 11 with respect to the fourth stirring paddle 34. [ As a result, the concrete mixer 8 can alternately perform stirring and shearing of the kneaded product, thereby improving the kneading performance.

The material in the vicinity of the first paddle module 21 is agitated by the second agitation paddle 25. The material is immediately sheared by the first shearing paddle 27 after the first kneading shaft 11 has rotated half a turn. In addition, the material in the vicinity of the second paddle module 22 is agitated by the fourth agitation paddle 34. The material is immediately sheared by the second shearing paddle 35 after the first kneading shaft 11 has rotated half a turn.

Thus, while the first kneading shaft 11 rotates once, the stirring and the shearing are alternately repeated, so that the kneaded product can be effectively kneaded. Further, since stirring and shearing are alternately repeated, the kneading time can be shortened.

In the concrete mixer 8, the second delivery paddle 36 and the third delivery paddle 37 are disposed symmetrically with respect to the first delivery paddle 28 provided on the first kneading shaft 11 side Is installed. Therefore, the concrete mixer 8 can mix a large amount of material without retaining the material.

10A, the material on the first kneading shaft 11 side is fed to the second kneading shaft 12 side by the first feeding paddle 28 (arrow P1 Reference). At this time, the third delivery paddle 37 on the second kneading shaft 12 side faces downward. Therefore, the third dispensing paddle 37 is in a state in which the material dispensed by the first dispensing paddle 28 is received.

10 (b), when the second kneading shaft 12 is rotated by about 90 degrees, the material in the vicinity of the third delivery paddles 37 on the second kneading shaft 12 side, And is sent to the first kneading shaft 11 side by the third delivery paddle 37 (see arrow P2). At this time, the first agitating paddle 24 on the first kneading shaft 11 side faces downward. Therefore, the first agitating paddle 24 is in a state in which the material dispensed by the third dispensing paddle 37 is received.

10 (c), when the first kneading shaft 11 is rotated by about 90 degrees, the material in the vicinity of the first agitating paddle 24 is supplied to the first agitating paddle 24) in the axial direction of the first kneading shaft 11 (inward direction in Fig. 10). This is because the first agitating paddle 24 is formed in a spiral shape.

Thus, when the material is fed in the axial direction of the first kneading shaft 11, a space is formed inside the first agitating paddle 24 (see slant line S). At this time, the second delivery paddle 36 on the second kneading shaft 12 side faces downward. In the vicinity of the second delivery paddle 36, there is another material. This is because the first paddle module 21 and the second paddle module 22 newly supply different materials from the inner side in Fig. 10 to the front side.

10 (d), when the second kneading shaft 12 is rotated by about 90 degrees, the material in the vicinity of the second delivery paddle 36 on the second kneading shaft 12 side, And is sent to the first kneading shaft 11 side by the second delivery paddle 36 (see arrow P3). 10 (e), when the first kneading shaft 11 is rotated by about 90 degrees, the material (a part thereof) fed to the first kneading shaft 11 side is subjected to the first feeding And is sent to the second kneading shaft 12 side by the paddle 28 (see arrow P4).

Thus, every time the first kneading shaft 11 and the second kneading shaft 12 are rotated by about 90 degrees, the first dispensing paddle 28 and the second dispensing shaft 28 on the first kneading shaft 11 side The material is sent to the first kneading shaft 11 and the second kneading shaft 12 alternately by the second sending paddle 36 and the third sending paddle 37 on the side of the first kneading shaft 11 and the second kneading shaft 12. Therefore, the concrete mixer 8 can mix a large amount of material without retaining the material.

The material dispensed toward the first kneading shaft 11 by the third dispensing paddle 37 is supplied to the first mixing paddle 11 and the second mixing paddle 12 every time the first mixing shaft 11 and the second mixing shaft 12 make one revolution. (24) in the axial direction of the first kneading shaft (11). Therefore, the concrete mixer 8 can efficiently circulate the material in the inward direction from the lateral direction shown in Fig. Therefore, the concrete mixer 8 can more effectively perform kneading of the material.

The first dispensing paddle 28, the second dispensing paddle 36 and the third dispensing paddle 37 prevent the kneaded product from adhering to the inner end face of the mixer body 10. [ The blades 32 and 33 of the first delivery paddle 28, the second delivery paddle 36 and the third delivery paddle 37 are arranged so as to follow the inner end face of the mixer body 10 Is installed. Accordingly, when the first dispensing paddle 28, the second dispensing paddle 36, and the third dispensing paddle 37 are rotated, they move along the inner end face of the mixer body 10. Therefore, the first dispensing paddle 28, the second dispensing paddle 36 and the third dispensing paddle 37 remove the kneaded product adhering to the inner end face of the mixer body 10 during kneading .

The scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. The concrete mixer 8, the first kneading shaft 11, the second kneading shaft 12, the first paddle module 21, the second paddle module 22, and the second paddle module 22 in the above- The third paddle module 23, the first agitation paddle 24, the second agitation paddle 25, the third agitation paddle 26, the fourth agitation paddle 34, the first shearing paddle ( 27, the second shearing paddle 35, the first delivering paddle 28, the second delivering paddle 36, the third delivering paddle 37, and the blades 30, 31, 32 The shape, size, quantity, structure, and the like are not limited to the above-described embodiment, but can be appropriately changed in design.

Particularly, in the present embodiment, the first paddle module 21 has three first paddles 24 for stirring, a second paddle 25 for stirring, and a third paddle 26 for stirring. However, The number of paddles is not limited to this. Therefore, the number of valleys Q formed by the adjacent blades 30 is not limited to the two disclosed in the above embodiment.

The first paddle module includes a first paddle module and a second paddle module. The first paddle module includes a first paddle module, a second paddle module, and a second paddle module. A second paddle module having a first paddle module and a second paddle module having a first paddle module and a second paddle module having a first paddle module and a second paddle module, The first and second shearing paddles 29 and 29 are provided with a pair of shearing paddles 29 and 29. The shearing paddles 29 and 30 are provided with a plurality of blades , 36: second delivery paddle, 37: third delivery paddle

Claims (9)

A mixer main body capable of accommodating a plurality of materials as raw materials for raw concrete,
A kneading shaft rotatably disposed in the mixer body,
A plurality of stirring paddles for stirring the plurality of materials,
The stir paddle
An arm connected to the kneading shaft, and a first blade provided at a tip of the arm,
The first blades of the plurality of agitation paddles,
A kneading shaft disposed continuously in a spiral shape so as to surround the kneading shaft,
And a trough portion in which the distance between the first blades becomes narrower toward the direction away from the kneading shaft, among adjacent first blades among the first blades continuously arranged. Concrete mixer. The method according to claim 1,
The first blade is formed in an approximately bow shape,
Wherein the valleys are formed by opposing end faces of the first blades which are successively disposed. 3. The method according to claim 1 or 2,
At an axially symmetric position of the kneading shaft of one of the plurality of stirring paddles,
Wherein a first shearing paddle is provided for shearing the kneaded material having a second axially-shaped second blades and after the plurality of materials have been kneaded. 4. The method according to any one of claims 1 to 3,
Wherein the agitating paddles provided on one side of the mixer main body in the direction of the kneading shaft among the plurality of agitating paddles are provided at axially symmetric positions of the kneading shafts,
An arm connected to the kneading shaft and a third blade having a substantially flat plate shape provided along a side surface of the arm and provided with first dispatch paddles for dispensing the kneaded product outwardly of the rotation range of the third blade A concrete mixer. 5. The method according to any one of claims 1 to 4,
Further comprising a stirring paddle provided on the kneading shaft,
In the axisymmetric position of the kneading shaft of the stirring paddles,
Wherein a second shearing paddle is provided for shearing the kneaded material having an approximately axially shaped second blade and after the plurality of materials have been kneaded. 6. The method according to any one of claims 1 to 5,
A kneading shaft provided on the kneading shaft,
An arm connected to the kneading shaft and a third blade substantially in the shape of a plate provided along a side surface of the arm and having a second delivery paddle for delivering the kneaded material out of the rotation range of the third blade and,
At the axially symmetric position of the kneading shaft of the second delivery paddles,
Wherein a third dispensing paddle is provided which has the same configuration as the second dispensing paddle and dispenses the kneaded product to the outside of the rotation range of the third blades. The method according to claim 5 or 6,
In the mixer main body, two kneading shafts are juxtaposed,
The mixing shaft of one side is provided in parallel with the mixing paddle, the second shearing paddle and the second feeding paddle in this order from one side of the mixer main body in the kneading shaft direction,
And the other kneading shaft is disposed in the order of the second dispensing paddle, the second shearing paddle and the plurality of stirring paddles in this order from the one side of the mixer main body. 8. The method of claim 7,
The second delivery paddles are provided at symmetrical positions of the other kneading shafts symmetrically with respect to the one kneading shaft on which the first delivery paddles are provided,
The first dispensing paddle provided on the one kneading shaft and the second dispensing paddle provided on the other kneading shaft,
And is rotated about the axis of the kneading shaft in the middle reverse direction when the phase difference of 90 degrees is maintained. 9. A raw concrete producing apparatus, comprising the concrete mixer according to any one of claims 1 to 8.
KR1020150067116A 2014-05-14 2015-05-14 Concrete mixer and ready-mixed concrete producing apparatus using the same KR101759387B1 (en)

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KR102196954B1 (en) * 2018-11-12 2020-12-31 대상이앤씨(주) On-site reassembly apparatus for ultra early strength concrete and construction method using the same
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JPS437109Y1 (en) * 1965-06-14 1968-03-29
CN2267089Y (en) * 1996-09-07 1997-11-12 浙江省舟山盐业科学研究所 Equipment for wet-filling additives to granular material
JP4132344B2 (en) * 1999-01-25 2008-08-13 日工株式会社 2-axis continuous mixer
JP4610112B2 (en) * 2001-03-22 2011-01-12 日工株式会社 Mixer
CN2491098Y (en) * 2001-07-08 2002-05-15 武冈市蜂窝煤机制造厂 Novel spiral agigator
JP3968391B2 (en) * 2001-10-24 2007-08-29 光洋機械産業株式会社 2 axis mixer for kneading viscous fluid
JP2007152190A (en) * 2005-12-02 2007-06-21 Nikko Co Ltd Two-shaft mixer
JP2008212888A (en) * 2007-03-07 2008-09-18 Kyc Machine Industry Co Ltd Double-shaft mixer for kneading viscous fluid
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JP2010201835A (en) * 2009-03-05 2010-09-16 Nikko Co Ltd Biaxial mixer
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CN202506349U (en) * 2012-03-14 2012-10-31 四川三塔重工机械有限公司 Machine for humidifying, stirring and conveying municipal solid waste

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SG10201503713UA (en) 2015-12-30
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CN105082355A (en) 2015-11-25
JP5968360B2 (en) 2016-08-10
CN105082355B (en) 2018-06-05
TWI589350B (en) 2017-07-01
KR101759387B1 (en) 2017-07-18

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