Mixing device for admixture-wrapped aggregate concrete

Abstract

The utility model relates to an admixture-wrapped aggregate concrete mixing device which comprises a mixing drum, a mixing part for mixing materials, a feed port formed in the top of the mixing drum, a discharge port formed in the bottom of the mixing drum, and a spiral conveyor arranged above the mixing drum and used for conveying admixtures, a conveying belt for conveying wet aggregate and receiving admixture is arranged below the spiral conveyor, the conveying belt conveys the wet aggregate and the admixture into the mixing drum together through the feeding port to be mixed, and compared with common mixing equipment, the concrete with the aggregate wrapped by the admixture produced through the mixing device can greatly improve the strength of the concrete; the durability and workability of the concrete are improved, the service life of the concrete can be prolonged, the overall consumption of the concrete is reduced, and the overall material cost is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete mixing technical field especially relates to a mixing material wraps aggregate concrete mixing device. BACKGROUND

[0002] At present, the ordinary concrete mixing process is that cement, water, fine aggregate, coarse aggregate and mixing material are mixed together to form concrete mixture, the concrete mixed by this process is prone to form a directional enrichment layer of calcium hydroxide at the interface of aggregate and cement stone, which affects the strength and durability of the concrete.

[0003] There are many methods to improve the strength of concrete by improving the mixing process, such as compared with the ordinary mixing process, the cement wrapped sand process can increase the 28d compressive strength by 0-30%; the cement wrapped sandstone process can increase the compressive strength of the concrete by about 10%; the 28d compressive strength of the concrete prepared by the low water-cement ratio paste wrapped aggregate process is increased by 20-56%, and the cement consumption per unit of concrete is saved by 10-20% under the same 28d compressive strength; the strength of the concrete prepared by the mixing material wrapped aggregate process can be increased by 20-40%.

[0004] However, the ordinary mixing process is still widely used in the concrete mixing station at present, and it cannot be adapted to the above-mentioned mixing process, and can only be simply adjusted on the basis of the existing production equipment, thereby leading to the failure to realize the above-mentioned new mixing process, which makes the above-mentioned new mixing process have good technical feasibility, but it is difficult to be converted into actual productivity, and therefore it is urgent to develop a feeding device which can realize the above-mentioned new mixing process. UTILITY MODEL CONTENTS

[0005] The utility model solves the above-mentioned problems of the prior art and provides a mixing material wrapped aggregate concrete mixing device, which is adaptively set for the cement wrapped sand process, the mixing material can be stacked and covered on the wet aggregate in advance before mixing, and then the two are sent into the mixing drum together for mixing, so that the cement particles are bonded on the surface of the sand, a low water-cement ratio paste shell is formed, and the strength of the concrete or mortar is improved.

[0006] The utility model solves the technical problems by adopting the following technical scheme: the mixing material wrapped aggregate concrete mixing device comprises a mixing drum, a stirring part for stirring the material, a feeding port arranged at the top of the mixing drum, and a discharging port arranged at the bottom of the mixing drum, a spiral conveyor for conveying the mixing material is arranged above the mixing drum, a conveying belt for conveying the wet aggregate and catching the mixing material is arranged below the spiral conveyor, and the conveying belt sends the wet aggregate and the mixing material into the mixing drum through the feeding port for mixing.

[0007] For further improvement, the inner wall of the stirring barrel is provided with a tapered guide surface leading to the discharge port.

[0008] Further improvement, the stirring part includes a shaft body arranged in the interior of the stirring barrel, stirring blades mounted on the outer side of the shaft body, a motor mounted on the stirring barrel and used for driving the shaft body to rotate, and a positioning member arranged in the stirring barrel and used for supporting the rotation of the shaft body.

[0009] Further improvement, the stirring blades and the shaft body are fixedly mounted with a lining plate for reinforcing the connection.

[0010] Further improvement, the positioning member includes a support sleeve sleeved on the outer side of the shaft body and a plurality of support rods fixed on the outer side of the support sleeve and the inner wall of the stirring barrel, and the shaft body is rotationally connected to the support sleeve and supported by the support sleeve.

[0011] Further improvement, the stirring barrel is made of steel plate, with a diameter of 500-800mm, a height of 1000-2000mm, and a thickness of 20-50mm.

[0012] Further improvement, the diameter of the feeding port is 200-300mm, and the diameter of the discharge port is 200-500mm.

[0013] Further improvement, the diameter of the shaft body is 100-300mm.

[0014] Further improvement, the stirring blades are made of steel plate with an outer arc surface of 150-300mm, an inner arc surface of 50-100mm, an arc center angle of 45°, and a thickness of 10-30mm.

[0015] Further improvement, the stirring blades are inclined by 10-15 degrees and welded on the shaft body.

[0016] Further improvement, the longest side of the lining plate is 60-100mm, and the thickness is 10-30mm.

[0017] The beneficial effects of the present application are: compared with ordinary stirring equipment, the admixture-wrapped aggregate concrete produced by the stirring device can greatly improve the strength of the concrete, improve the durability and workability of the concrete, not only that, but also can prolong the service life of the concrete, save the overall consumption quantity of the concrete, and further reduce the overall material cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic view of the present application;

[0019] Fig. 2 is a structural schematic view of the positioning member in the present application;

[0020] Fig. 3 is a structural schematic view of the stirring blades and the lining plate in the present application.

[0021] Explanation of reference signs: stirring drum 1, stirring part 2, shaft body 2-1, stirring blade 2-2, motor 2-3, positioning piece 2-4, support sleeve 2-4-1, support rod 2-4-2, lining plate 2-5, feeding port 3, discharging port 4, screw conveyor 5, conveying belt 6, conical guide surface 7. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0023] Referring to the drawings Figs. 1-3 : In this embodiment, the admixture-wrapped aggregate concrete mixing device comprises a stirring drum 1, the inside of the stirring drum 1 is provided with a stirring part 2, the stirring part 2 is used for stirring the admixture and the aggregate put into the inside of the stirring drum 1, finally achieving the effect that the admixture wraps the aggregate, a feeding port 3 is formed at the top of the stirring drum 1, a feeding hopper or a feeding cylinder can be selectively installed at the feeding port 3, which is used for conveniently feeding the materials into the stirring drum 1 through the feeding port 3, a discharging port 4 is formed at the bottom of the stirring drum 1, a screw conveyor 5 used for conveying the admixture and a conveying belt 6 used for conveying the wet aggregate are arranged above the stirring drum 1, the conveying belt 6 is located above the feeding port 3, the discharging end of the conveying belt 6 corresponds to the feeding port 3, the screw conveyor 5 is arranged above the conveying belt 6, the discharging end of the screw conveyor 5 faces the conveying belt 6, the admixture is conveyed by the screw conveyor 5 and falls on the conveying belt 6, because the conveying belt 6 is continuously conveying the wet aggregate, the admixture will cover the wet aggregate and form a double-layer stacking structure, the conveying belt 6 feeds the wet aggregate and the admixture into the stirring drum 1 through the feeding port 3 together, then the stirring part 2 is used for stirring, a conical guide surface 7 leading to the discharging port 4 is arranged on the inner wall of the stirring drum 1, which is used for helping the materials to be discharged from the discharging port 4.

[0024] Referring to the drawings Figs. 1-3 : The stirring part 2 comprises a shaft body 2-1 arranged in the inside of the stirring drum 1, the shaft body 2-1 is a steel shaft, a plurality of steel stirring blades 2-2 are installed on the outer side of the shaft body 2-1, a lining plate 2-5 used for strengthening the connection between the stirring blades 2-2 and the shaft body 2-1 is fixedly installed between the stirring blades 2-2 and the shaft body 2-1, the lining plate 2-5 is triangular, a motor 2-3 is fixedly installed at the top of the stirring drum 1, one end of the shaft body 2-1 is connected with the motor 2-3, the motor 2-3 can drive the shaft body 2-1 to rotate, a positioning piece 2-4 is further arranged in the lower half of the inside of the stirring drum 1, the positioning piece 2-4 is used for supporting and positioning the shaft body 2-1 and also enabling the shaft body 2-1 to rotate.

[0025] Referring to the drawings Figs. 1-3The positioning component 2-4 includes a support sleeve 2-4-1 sleeved on the outside of the shaft 2-1, and multiple support rods 2-4-2 that support and fix the outside of the support sleeve 2-4-1 and the inner wall of the mixing drum 1. The shaft 2-1 is rotatably connected to the support sleeve 2-4-1 and supported by the support sleeve 2-4-1. The support sleeve 2-4-1 is selected as a bearing capable of withstanding large axial loads. The shaft 2-1 is fixed to the inner ring of the bearing, and the support rods 2-4-2 are fixedly installed on the outer ring of the bearing.

[0026] See attached document Figs. 1-3 :

[0027] The mixing drum 1 is made of steel plate, with a diameter of 500mm, a height of 1000mm, and a thickness of 20mm;

[0028] The diameter of feed inlet 3 is 200mm;

[0029] Shaft 2-1 has a diameter of 100mm;

[0030] The diameter of discharge port 4 is 200mm;

[0031] The stirring blade 2-2 is made of a steel plate with an outer arc surface of 150mm, an inner arc surface of 50mm, an arc center angle of 45°, and a thickness of 10mm.

[0032] The stirring blade 2-2 is tilted at 10 degrees and connected to the shaft 2-1 by welding.

[0033] The longest side of liner 2-5 is 60mm, and the thickness is 10mm.

[0034] See attached document Figs. 1-3 :

[0035] The mixing drum 1 is made of steel plate, with a diameter of 800mm, a height of 2000mm, and a thickness of 50mm;

[0036] The diameter of feed inlet 3 is 300mm;

[0037] The diameter of shaft 2-1 is 300mm;

[0038] The diameter of discharge port 4 is 500mm;

[0039] The stirring blade 2-2 is made of a steel plate with an outer arc surface of 300mm, an inner arc surface of 100mm, an arc center angle of 45°, and a thickness of 30mm.

[0040] The stirring blade 2-2 is inclined at 15 degrees and connected to the shaft 2-1 by welding.

[0041] The longest side of liner 2-5 is 100mm, and the thickness is 30mm.

[0042] See attached document Figs. 1-3 :

[0043] The stirring drum 1 is made of steel plate, with a diameter of 750 mm, a height of 1500 mm, and a thickness of 45 mm;

[0044] The feeding port 3 has a diameter of 250 mm;

[0045] The shaft body 2-1 has a diameter of 200 mm;

[0046] The discharging port 4 has a diameter of 400 mm;

[0047] The stirring blade 2-2 is made of steel plate with an outer arc surface of 200 mm, an inner arc surface of 75 mm, an arc center angle of 45°, and a thickness of 20 mm;

[0048] The stirring blade 2-2 is connected with the shaft body 2-1 by welding with an inclination of 12 degrees;

[0049] The lining plate 2-5 has a longest side of 80 mm and a thickness of 20 mm.

[0050] Referring to the drawings, Figs. 1-3 :

[0051] The stirring drum 1 is made of steel plate, with a diameter of 600 mm, a height of 1200 mm, and a thickness of 30 mm;

[0052] The feeding port 3 has a diameter of 225 mm;

[0053] The shaft body 2-1 has a diameter of 180 mm;

[0054] The discharging port 4 has a diameter of 300 mm;

[0055] The stirring blade 2-2 is made of steel plate with an outer arc surface of 180 mm, an inner arc surface of 60 mm, an arc center angle of 45°, and a thickness of 16 mm;

[0056] The stirring blade 2-2 is connected with the shaft body 2-1 by welding with an inclination of 12.5 degrees;

[0057] The lining plate 2-5 has a longest side of 60 mm and a thickness of 18 mm.

[0058] In use, first, the aggregate is pre-wetted by the humidifying sprayer, the spraying amount is calculated and determined and automatically controlled according to the water content of the aggregate, the aggregate amount, the pre-water absorption amount and the like, then the admixture is conveyed by the screw conveyor 5, the admixture is conveyed to the conveying belt 6 and covers and stacks on the wet aggregate, then the conveying belt 6 simultaneously enters the wet aggregate and the admixture into the feeding port 3, the wet aggregate and the admixture in the feeding port 3 fall downwards in the cylinder 3 by gravity, the motor 2-3 drives the stirring blade 2-2 to rotate through the rotating shaft 2-1, the stirring blade 2-2 stirs the wet aggregate and the admixture, so that the admixture can wrap the aggregate, after stirring, the wet aggregate and the admixture are discharged through the discharge port 4, so as to realize the admixture wrapping aggregate stirring process.

[0059] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application. Any modification, equivalent change and modification of the above embodiment, which does not depart from the technical solution of the present application, is still within the scope of the present application.

Claims

1. A blended material-wrapped aggregate concrete mixing device, comprising a mixing drum (1), a mixing part (2) for mixing the material, an inlet (3) formed on the top of the mixing drum (1), and an outlet (4) formed on the bottom of the mixing drum (1), characterized in that: Said stirring drum (1) is provided with a spiral conveyor (5) for conveying the mixed material, and the spiral conveyor (5) is provided with a conveying belt (6) for conveying the wet aggregate and catching the mixed material, which sends the wet aggregate and the mixed material into the stirring drum (1) through the feeding port (3) for stirring.

2. The blended-wrapped aggregate concrete mixing apparatus of claim 1, wherein: The inner wall of the stirring drum (1) is provided with a tapered guide surface (7) leading to the discharge port (4).

3. The blended coated aggregate concrete mixing apparatus of claim 1, wherein: The stirring part (2) comprises a shaft body (2-1) arranged inside the stirring drum (1), stirring blades (2-2) mounted on the outer side of the shaft body (2-1), a motor (2-3) mounted on the stirring drum (1) and used for driving the shaft body (2-1) to rotate, and a positioning member (2-4) arranged in the stirring drum (1) and used for supporting the rotation of the shaft body (2-1).

4. The blended coated aggregate concrete mixing apparatus of claim 3, wherein: The lining plate (2-5) is fixedly mounted between the stirring blades (2-2) and the shaft body (2-1) for reinforcing the connection.

5. The blended coated aggregate concrete mixing apparatus of claim 3, wherein: The positioning member (2-4) comprises a support sleeve (2-4-1) sleeved on the outer side of the shaft body (2-1) and a plurality of support rods (2-4-2) fixed on the outer side of the support sleeve (2-4-1) and the inner wall of the stirring drum (1), and the shaft body (2-1) is rotationally connected to the support sleeve (2-4-1) and supported by the support sleeve (2-4-1).

6. The blended coated aggregate concrete mixing apparatus of claim 1, wherein: The stirring drum (1) is made of steel plate, with a diameter of 500-800 mm, a height of 1000-2000 mm, and a thickness of 20-50 mm.

7. The blended coated aggregate concrete mixing apparatus of claim 1, wherein: The diameter of the feeding port (3) is 200-300 mm, the diameter of the discharge port (4) is 200-500 mm, and the diameter of the shaft body (2-1) is 100-300 mm.

8. The blended coated aggregate concrete mixing apparatus of claim 3, wherein: The stirring blades (2-2) are made of steel plate with an outer arc surface of 150-300 mm, an inner arc surface of 50-100 mm, an arc center angle of 45°, and a thickness of 10-30 mm.

9. The blended-wrapped aggregate concrete mixing apparatus of claim 3, wherein: The stirring blades (2-2) are inclined by 10-15 degrees and welded on the shaft body (2-1).

10. The blended coated aggregate concrete mixing apparatus of claim 4, wherein: The longest side of the lining plate (2-5) is 60-100 mm, and the thickness is 10-30 mm.

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