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KR101737098B1 - Soil cement manufacturing apparatus with improved homogeneity - Google Patents

Soil cement manufacturing apparatus with improved homogeneity Download PDF

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Publication number
KR101737098B1
KR101737098B1 KR1020150123637A KR20150123637A KR101737098B1 KR 101737098 B1 KR101737098 B1 KR 101737098B1 KR 1020150123637 A KR1020150123637 A KR 1020150123637A KR 20150123637 A KR20150123637 A KR 20150123637A KR 101737098 B1 KR101737098 B1 KR 101737098B1
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KR
South Korea
Prior art keywords
cement
blade
soil
composition
unit
Prior art date
Application number
KR1020150123637A
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Korean (ko)
Other versions
KR20170027120A (en
Inventor
이태형
Original Assignee
(유)신기Ati
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (유)신기Ati filed Critical (유)신기Ati
Priority to KR1020150123637A priority Critical patent/KR101737098B1/en
Publication of KR20170027120A publication Critical patent/KR20170027120A/en
Application granted granted Critical
Publication of KR101737098B1 publication Critical patent/KR101737098B1/en

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Classifications

    • 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
    • B28C5/1238—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 for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
    • 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
    • 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
    • B28C5/34—Mixing on or by conveyors, e.g. by belts or chains provided with mixing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sole cement manufacturing apparatus, and more particularly, to a sole cement manufacturing apparatus improved in homogeneity by improving the efficiency of continuous pulverizing and mixing discharge. According to the present invention, there are provided a composition tank 130 for providing a composition space therein; And a plurality of unit impellers (150a) sequentially installed on the rotary shaft along the rotation axis, the rotary shaft (141) extending along the rotation axis in the composition space, and the impeller part (150) Said blend comprising at least one blade (171) of said plurality of blades, said blend (171) having a plurality of radially disposed blades A scratching edge 180 facing the inner surface of the bottom portion is provided at an end of the blade, and the end of the blade 175 excluding the scratching-off blade among the plurality of the scratching blades is rotated from the scratching- And the distance (a) from the axis of rotation to the axis of rotation gradually increases.

Description

TECHNICAL FIELD [0001] The present invention relates to a sole cement manufacturing apparatus with improved homogeneity,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sole cement manufacturing apparatus, and more particularly, to a sole cement manufacturing apparatus improved in homogeneity by improving the efficiency of continuous pulverizing and mixing discharge.

Soil cement is soil cement with soil and cement as main material and is different from general cement concrete in which water with optimum water content for compaction is added and cement, sand or gravel as main material and a large amount of water is added. Soil cement is added with a small amount of water with optimal water content, so it is important to ensure homogeneity of the mixture by pulverizing and mixing it at a very uniform rate using a high speed rotating body. Since soilless cement is less toxic and environmentally friendly, it has recently been used in pedestrian roads, bicycle roads, and road construction, and has been attracting attention as a substitute for conventional asphalt and concrete.

No. 10-0644245, which is a prior patent of the inventor of the present invention, discloses a soilless cement manufacturing apparatus which can prevent the wear of the blades of the impeller and prevent the impregnation of the soil cement in the composition tank, Discloses a soilless cement manufacturing apparatus equipped with an impeller equipped with a scratching blade. However, since the rotating speed of the impeller is relatively faster than the falling speed of the soil, the probability of clashing the impeller blade with the impeller blade is low in the structure of the prior patent in which the positions of the ends of the impeller blades are all the same, There is a problem that the mixing efficiency is lowered.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for producing a soil-cement with improved homogeneity by improving the continuous-pulverized mixed discharge efficiency.

According to an aspect of the present invention,

A composition tank 130 for providing a composition space therein, a bottom portion 140 and side portions 151a and 151b which can be worn in the composition tank, And a plurality of unit impellers (150a) sequentially installed on the rotating shaft along the rotational axis (B) in the composition space, and an impeller part (150) , Said composition being provided with a semicircular bottom (140) forming an arc with respect to said axis of rotation, said unit impeller comprising a plurality of blades radially disposed, wherein at least one of the blades A scratching edge 180 facing the inner surface of the bottom portion is provided at an end of the bottom portion 171. The end of the blade 175 excluding the scratching blade among the plurality of the blades is formed with the scratch- Wherein a distance (a) from the blade to the rotation axis line decreases stepwise along the rotation direction from the blade It is provided.

The scratch blade may have a special steel attached to a front end that is close to and in contact with the wall surface of the bottom portion.

Wherein the special steel is opposed to a wall surface of the bottom portion in a face-to-face manner.

The bottom may be separable from the composition bath.

The soil cement manufacturing apparatus further includes a raw material supplying unit 110 for supplying soil and cement to the composition tank, wherein the raw material supplying unit includes a conveying conveyor belt 111 for conveying soil and cement to the composition tank, A soil hopper 112 for providing soil with cement, a cement hopper 113 for supplying cement with the conveying conveyor belt, and a scattering prevention part 114 for preventing scattering of cement.

The scattering prevention portion may be formed in the soil loaded on the conveying conveyor belt to form a groove for receiving the cement dropped from the cement hopper and to cover the groove after the cement is received in the groove.

The soil cementing apparatus further includes a side blade unit 183 disposed on the discharge side of the composition space and having a side blade unit 185 moving up and down and a blade drive unit 184 driving the side blade unit 185 .

According to the present invention, all of the objects of the present invention described above can be achieved. Specifically, the crushing mixing efficiency can be improved by increasing the probability of colliding with the falling soil by changing the position of the end of each blade of the impeller except the scratching blade.

In addition, since the special steel of high strength is attached to the tip of the scratch blade so that the inner surface and the surface of the bottom of the composition tank are close to each other, wear of the scratching blade can be remarkably reduced.

Since the lower bottom part and the side wall of the composition tank adjacent to the scratching blade are detachably coupled, it is possible to smoothly replace when worn, thereby facilitating maintenance.

1 is a view schematically showing the construction of an apparatus for producing a silo cement according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line A-A 'of the composition shown in FIG. 1, showing the interior of the composition.
FIG. 3 is a perspective view of the unit impeller shown in FIG. 2. FIG.
4 is an enlarged view of a portion C in Fig.
FIG. 5 is a view schematically showing a structure of a side blade unit provided in the apparatus for producing a silo cement shown in FIG. 1. FIG.
FIG. 6 is a plan view showing the scattering prevention portion shown in FIG. 1. FIG.
FIG. 7 is a perspective view showing the soil cover in FIG. 6. FIG.

Hereinafter, the configuration and operation of the embodiment of the present invention will be described in detail.

First, an embodiment of the present invention will be described in detail with reference to its constitution. 1, an apparatus 100 for producing a soil cement according to an embodiment of the present invention includes a raw material supply unit 110 for supplying soil and cement, which are main materials of soil cement, a soil supply unit 110 for supplying soil and cement supplied from the raw material supply unit 110, And a composition unit 120 for composing and discharging the soil cement using the cement.

The raw material supply unit 110 includes a conveying conveyor belt 111, a soil hopper 112, a cement hopper 113, and a scattering prevention unit 114. The raw material supply unit 110 supplies soil and cement to the composition unit 120.

The conveying conveyor belt 111 extends substantially horizontally to move the soil and the cement to one side.

The soil hopper 112 stores the soil, and drops the stored soil onto the conveying conveyor belt 111 to supply the soil. The soil hopper 112 is located upstream of the cement hopper 113 and the scattering prevention portion 114 in the conveying direction of the conveying conveyor belt 111.

The cement hopper 113 stores the cement and supplies the stored cement to the conveying conveyor belt 111. [ The cement hopper 113 is located downstream of the soil hopper 112 in the conveying direction of the conveying belt 111 so as to drop the cement onto the soil conveyed by the conveying conveyor belt 111 and supply the cement. The cement hopper 113 supplies an appropriate amount of cement according to the amount of soil to be supplied.

The scattering prevention portion 114 prevents the cement powder from being scattered when the cement falls from the cement hopper 113 into the soil or when the cement is conveyed. The scattering prevention part 114 forms grooves in the soil before the soil conveyed by the conveying conveyor belt 111 passes through the cement hopper 113 and covers the grooves after the cement has fallen in the grooves so that the cement powder is scattered ≪ / RTI > 6 and 7, the scattering prevention portion 114 includes a groove forming portion 114a and a cement hopper 113 positioned upstream of the discharge port of the cement hopper 113 in the conveying direction of the conveying conveyor belt 111, And a groove cover 114b located on the downstream side of the conveying belt 111 in the conveying direction than the outlet of the conveying belt 111. [ 6, the groove forming part 114a is located upstream of the discharge port of the cement hopper 113 in the conveying direction of the conveying conveyor belt 111 and contacts the central portion of the soil S to be conveyed, ). The cement powder P discharged to the cement hopper 113 falls into the groove D formed in the soil S by the groove forming portion 114a. 6, the groove cover 114b is located on the downstream side of the conveying belt 111 in the conveying direction with respect to the discharge port of the cement hopper 113 so that the cement powder P located in the groove D is filled with the earth . Referring to FIGS. 6 and 7, the groove cover 114b includes first and second cover plates 114c and 114d located on both sides of the conveying conveyor belt 111, respectively. The two cover plates 114c and 114d are arranged so as to be spaced apart from each other toward the downstream side in the conveying direction of the conveying conveyor belt 111 and are inclined so as to spread outwardly toward the conveying conveyor belt 111 . The two cover plates 114c and 114d collect the soil S toward the center so that the groove D is covered with the soil S so that the cement powder P is not exposed.

1, the composition section 120 includes a composition tank 130 and a rotation axis line B extending generally in the horizontal direction so as to crush, mix and form the soil and the cement in the composition tank 130, And a driving unit 190 for rotating the impeller unit 150. The impeller unit 150 is rotatable with respect to the impeller unit 150, The composition section 120 composes and discharges soil cement using the soil and cement supplied from the raw material supply section 110.

Referring to FIGS. 1 and 2, the composition tank 130 provides a composition space 131 for crushing, mixing and forming soil and cement therein. The composition bath 130 is elongated along the axis of rotation B and the composition space 131 extends along the axis of rotation B as well. That is, the direction of the axis of rotation B is the longitudinal direction of the composition tank 130. The composition tank 130 includes a bottom portion 140 and two end walls 145a and 145b located at both ends in the longitudinal direction and two side walls 151a and 151b formed on both sides of the bottom wall 140, And an outer wall 190 for receiving the bottom portion 140 and the two side wall portions 151a and 151b. The bottom part (140) is used with a steel part interposed therebetween so that wear is severe.

The bottom portion 140 has a semicircular shape centering on the axis of rotation B and is fitted to the lower ends of the two side wall portions 151a and 151b as a lining so as to be replaceable because of a heavy wear. The bottom portion 140 is preferably made of a metal material.

The two end walls 145a and 145b have a first end wall 145a located on the upstream side in the moving direction of the soil and the cement in the composition space 131 and a second end wall 145b located on the downstream side. The two end walls 145a and 145b are fixed to both ends of the bottom portion 140. [ The lower end of the second end wall 145b is provided with a discharge port 132 formed by cutting. The two end walls 145a, 145b are releasably engaged with the bottom portion 140 to facilitate replacement of the bottom portion 140. The two end walls 145a and 145b are preferably made of a metal material.

Each of the side wall portions 151a and 151b is located at the upper end of the bottom portion 140 and is formed to extend upward from both side ends of the end walls 145a and 145b. The two side wall portions 151a and 151b are detachably engaged with the bottom portion 140 to facilitate the replacement of the bottom portion 140. [ To this end, the two side wall portions 151a and 151b and the bottom portion 140 are detachably fixed by bolts. The two side wall portions 151a and 151b are preferably made of a metal material.

The extension wall portion 165 is formed to extend upward from the two side wall portions 151a and 151b to prevent the soil and the cement splashing out from the composition space 131 from going out. The extending wall portion 165 is preferably made of a relatively light material such as wood or plastic.

The outer wall 190 is formed to surround the bottom portion 140 and the two side wall portions 151a and 151b from the outside.

The impeller section 150 includes a rotating shaft 141 extending along the rotational axis B in the composition space 131 and a plurality of unit impellers (not shown) fixed to the rotating shaft 141 and rotating together with the rotating shaft 141 150a. The impeller portion 150 is rotated by the driver 190 to crush, mix and form the soil and cement in the composition tank 130 while moving the soil and cement from the first end wall 145a to the second end wall 145b And discharged through an outlet 132 formed at the lower end of the second end wall 145b.

The rotary shaft 141 extends along the axis of rotation B and is rotated by a driver 190 installed outside the composition tank 130 and is provided with a plurality of unit impellers 150a fixed to the rotary shaft 141, .

1 to 3, a plurality of unit impellers 150a are arranged in sequence in the composition space 131 along the axis of rotation B. Referring to FIGS. 2 and 3, each of the plurality of unit impellers 150a includes a coupling portion 151 fixed to the rotary shaft 141 and a plurality of blades fixed to the coupling portion 151.

The engaging portion 151 is generally disk-shaped and its center is fixed to the rotating shaft 141. A plurality of blades are fixed to the engaging portion 151.

The plurality of blades are fixed to the engaging portion 151 in a radial manner so as to extend generally radially outward with respect to the axis of rotation B. In the present embodiment, six blades are described by way of example, but the present invention is not limited thereto. Referring to FIGS. 2 to 4, at the ends of two blades 171 positioned symmetrically among the six blades, a scratch-off blade 180 for scraping the pressed soil and cement on the round bottom 140 is provided. In this embodiment, the scraper blade 180 is described as being fixed to the blade with a separate T-shaped member. Alternatively, the scraping blade 180 may be integrally formed with the blade 171. The scratching edge 180 is inclined with respect to the wall surface 141a so that the tip of the scratching edge 180 approaches the wall surface. The angle formed by the scratching edge 180 and the wall surface 141a . A special steel 181 facing the surface 141a is attached to the tip end of the scraping blade 180 that is adjacent to the wall surface 141a without being in contact with the wall surface 141a. As such, the wear of the scratching blade 180 can be significantly reduced by attaching the special steel 181. The scratching edge 180 also has an exit angle that is formed by being twisted to push the mixture backward, preferably between 81 degrees and 91 degrees. When the upper limit of the angular range is exceeded with respect to the lift angle and the discharge angle, the pulverization effect is lowered while the discharge amount is increased. The radial ends of the remaining four blades 175 that do not have the scratching blade 180 among the six blades are spaced apart from the blade 171 in which the scratching blade 180 is formed, The direction distance a is arranged to decrease stepwise. By arranging the respective blades 175 so that the positions of the radial ends of the blades 175 are different from each other, the mixture scraped by the scratching blade 180 falls and collides more with the ends of the blades 175, Is further improved.

The driving unit 190 rotates the rotating shaft 141 of the impeller unit 140 to drive the impeller unit 140.

The mixture formed in the composition tank 130 of the soil cement manufacturing apparatus 100 is divided into a side wall portion 151a on the side where the blades 171 and 175 are brought close to the second end wall 145b where the discharge port 132 is located, ) Is concentrated on the surface of the substrate. In order to solve such a problem, according to an embodiment of the present invention, a side blades 185 that move up and down at a corresponding position are provided as shown in FIG. 5 is a view schematically showing a structure of a side-mounted blade having side-by-side blades 185. As shown in Fig. 5, the side blade unit 183 includes a plate side blade unit 185 provided adjacent to the side wall unit 151a, a blade drive unit 184 for moving the side blade unit 185 up and down, And a connecting rod 186 connecting the side blades 185 and the side blades 184. The side blade 185 is driven to move up and down by the blade drive unit 184 to prevent the mixture from being accumulated inside the side wall portion 151a. The blade driver 184 is fixed to the outside of the composition tank to move the side blade 185 up and down. In the present embodiment, a hydraulic cylinder is used, but the present invention is not limited thereto. The connection rod 186, which moves up and down by the hydraulic cylinder 184, extends vertically and connects the side blade 185 and the blade drive 184. The side walls 151a and the outer walls 191 are formed by vertically extending guide grooves 151c to which the side blades 185 and the connecting rods 186 are connected.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

100: Soil cement manufacturing apparatus 110: Material supply unit
111: conveying conveyor belt 112: dirt hopper
113: cement hopper 114: scattering prevention part
120: Composition part 130: Composition part
150: impeller part 141: rotating shaft
150a: unit impeller 151:
171, 175: blade 180: scratched blade
183: Side blade unit 185: Side blade unit
181: Specialty steel 190: Actuator

Claims (7)

A composition bath 130 providing a composition space therein; And
A rotating shaft 141 extending in the horizontal direction along the rotational axis B in the composition space and a plurality of unit impellers 150a arranged in turn on the rotating shaft along the rotational axis B ),
The composition set has a semicircular bottom (140) forming an arc with respect to the axis of rotation,
Wherein the unit impeller has a plurality of blades radially disposed at the same position in the extending direction of the rotating shaft,
At least one of the plurality of blades radially disposed at the same position in the extending direction of the rotating shaft is provided with a scratching edge 180 facing the inner surface of the bottom portion of the at least one blade 171, Wherein a distance (a) between the blade and the rotation axis line is gradually decreased along the rotation direction from the blade formed with the scratch-off blade. The method according to claim 1,
Wherein the scratching blade has a special steel attached to a front end of the scratching blade facing the wall surface of the bottom portion. The method of claim 2,
Wherein the special steel is opposed to a wall surface of the bottom portion in a face-to-face manner. The method according to claim 1,
Wherein the bottom portion has a structure separable from the composition tank. The method according to claim 1,
Further comprising a raw material supply unit (110) for supplying soil and cement to the composition tank,
The raw material supply unit includes a conveying conveyor belt 111 for conveying soil and cement to the composition tank, a soil hopper 112 for supplying soil with the conveying conveyor belt, a cement hopper 113 for supplying cement with the conveying conveyor belt And a scattering prevention part (114) for preventing scattering of cement. The method of claim 5,
Wherein the scattering prevention portion forms a groove for receiving the cement dropped from the cement hopper in the soil placed on the conveying conveyor belt and covers the groove after receiving the cement in the groove. The method according to claim 1,
And a side blade unit 183 disposed on the discharge side of the composition space and having a side blade unit 185 moving up and down and a blade drive unit 184 driving the side blade unit 185. [ Wherein the apparatus comprises:
KR1020150123637A 2015-09-01 2015-09-01 Soil cement manufacturing apparatus with improved homogeneity KR101737098B1 (en)

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Application Number Priority Date Filing Date Title
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KR101737098B1 true KR101737098B1 (en) 2017-05-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002471A (en) * 2019-12-25 2020-04-14 东阳普润保温容器有限公司 Container device for cement storage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018155747A1 (en) * 2017-02-27 2018-08-30 유한회사 신기에이티아이 Device for manufacturing soil cement having improved uniformity
KR101976677B1 (en) * 2018-11-19 2019-05-09 시지엔지니어링(주) Pretreatment hopper of soil for manufacturing light weight mixed soil
CN114060048B (en) * 2021-11-05 2023-11-24 中国建筑第五工程局有限公司 Three-dimensional blade disc of dregs stirring refinement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200295234Y1 (en) 2002-08-08 2002-11-21 이태형 Manufacturing system for soil cement
KR100644245B1 (en) 2005-11-01 2006-11-10 주식회사 신기 Soil cement manufacturing machine quipped with impeller having scratching blade
JP2009030370A (en) 2007-07-27 2009-02-12 Jfe Steel Kk Soil agitating method for columnar improvement of ground, and agitating head for use in it
KR101179201B1 (en) 2012-06-04 2012-09-03 (주)일신엔지니어링 Agitator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200295234Y1 (en) 2002-08-08 2002-11-21 이태형 Manufacturing system for soil cement
KR100644245B1 (en) 2005-11-01 2006-11-10 주식회사 신기 Soil cement manufacturing machine quipped with impeller having scratching blade
JP2009030370A (en) 2007-07-27 2009-02-12 Jfe Steel Kk Soil agitating method for columnar improvement of ground, and agitating head for use in it
KR101179201B1 (en) 2012-06-04 2012-09-03 (주)일신엔지니어링 Agitator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111002471A (en) * 2019-12-25 2020-04-14 东阳普润保温容器有限公司 Container device for cement storage

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