Mixing and stirring device suitable for UHPC (Ultra High Performance Concrete) dry blend

Abstract

The utility model relates to the technical field of UHPC (Ultra High Performance Concrete) dry blends, in particular to a mixing and stirring device suitable for UHPC dry blends, which comprises a plurality of support frames, support rings are fixedly connected among the support frames, the inner sides of the support rings are rotatably connected with a stirring bin, and the tops of the support rings are fixedly connected with a feeding hopper. The stirring device has the advantages that the feeding hopper fixedly connected with the supporting ring is arranged at the feeding port, the area of the feeding port is increased, feeding of the device is more convenient, the stirring rod which is not in contact with the stirring bin can be installed through the feeding hopper, the stirring rod is kept in a vertical state to conduct stirring rotation in the rotating process of the stirring bin, and the stirring efficiency is improved. The stirring efficiency of the device is improved through the combination of two stirring modes in cooperation with overturning stirring of materials in the stirring bin, the bottom of the stirring bin is arranged to be in a forked arc shape, the stirring bin can make full contact with UHPC dry-mixed materials in the stirring bin, and the situation that the UHPC dry-mixed materials at the bottom of the stirring bin are not fully stirred is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of UHPC dry mixes, in particular to a mixing and stirring device suitable for UHPC dry mixes. Background Art

[0002] UHPC (ultra-high performance concrete) is an ultra-high-strength cement-based material with high strength, high toughness and low porosity. It is a magical material specially created for construction. Its basic configuration principle is: by increasing the fineness and activity of the components and not using coarse aggregates, the defects inside the material (pores and microcracks) are minimized to obtain ultra-high strength and high durability. Since UHPC adds steel fibers on the basis of cementitious materials and aggregates, it is easy to cause steel fibers to clump during the mixing process, so a special mixing and stirring device is required for sufficient mixing.

[0003] A mixing and stirring device for UHPC dry mix disclosed in Chinese patent CN202321761601.5 is suitable for UHPC dry mix. The device is suitable for UHPC dry mix. By setting an annular discharge port and a turntable, the dry mix falling on the turntable can fall from the annular discharge port to the screen surface under the action of centrifugal force, and the dry mix is ​​initially diverted to avoid the accumulation of the dry mix on the screen; a raised screen structure is also provided, so that the dry mix can slide on the screen surface under the action of gravity, and the screening is completed during the sliding process, thereby improving the screening efficiency of the dry mix. However, the device is suitable for UHPC dry mix. The mixing and stirring device is stirred only by one stirring rod. UHPC contains steel fibers, and insufficient stirring causes the steel fibers to agglomerate. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a mixing and stirring device suitable for UHPC dry mix, which effectively solves the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a mixing and stirring device suitable for UHPC dry mix, comprising a plurality of support frames, support rings are fixedly connected between the support frames, a stirring bin is rotatably connected to the inner side of the support ring, a feed funnel is fixedly connected to the top of the support ring, a first motor is fixedly connected to one side of the bottom of the feed funnel, and a stirring rod is fixedly connected to the output end of the first motor.

[0006] Optionally, the inner wall shape of the support ring is arc-shaped, the stirring chamber is spherical, the inner wall shape of the support ring is adapted to the outer shape of the stirring chamber, the axis of the support ring is inclined, and the axis of relative rotation between the support ring and the stirring chamber coincides with the axis of the support ring.

[0007] The above technical solution is adopted: by arranging a relatively rotating stirring chamber on the inner side of the support ring, the rotation of the stirring chamber itself causes the UHPC dry mix inside to be turned and stirred, thereby improving the stirring efficiency.

[0008] Optionally, a second motor is fixedly connected to one side of the bottom of the support ring, a gear is fixedly connected to the output end of the second motor, a rack is fixedly connected to the outer side of the bottom of the mixing chamber, the gear is meshed with the rack, the rack is ring-shaped and its axis coincides with the axis of the support ring.

[0009] The above technical solution is adopted: by arranging a gear driven by a second motor at the bottom of the support ring, the rotation of the gear drives the rack and the mixing chamber to rotate, so that the UHPC dry mix inside the mixing chamber is turned over for mixing.

[0010] Optionally, a feed port is provided at the top of the mixing bin, a discharge port is provided at the bottom of the mixing bin, an end cover is connected to the inner thread of the discharge port, and the inner surface of the end cover is adapted to the shape of the inner wall of the mixing bin.

[0011] The above technical solution is adopted: by setting an end cover at the discharge port to close it, the interior of the mixing bin is kept flat, which is convenient for mixing the UHPC dry mix. After the mixing is completed, the end cover is opened to facilitate the discharge.

[0012] Optionally, a plurality of connecting plates are fixedly connected to the top of the support ring, and the support ring is fixedly connected to the feed funnel via the connecting plates. The position of the feed funnel corresponds to the position of the feed port, and one side of the feed funnel is fixedly connected to one side of the first motor.

[0013] The above technical solution is adopted: by arranging a feeding funnel fixedly connected to the support ring at the feeding port, the area of ​​the feeding port is increased, the feeding of the device is made more convenient, and the stirring rod that does not contact the stirring bin can be installed through the feeding funnel. During the rotation of the stirring bin, the stirring rod remains in a vertical state for stirring and rotation, and cooperates with the turning and stirring of the material in the stirring bin. The stirring efficiency of the device is improved by the combination of two stirring methods.

[0014] Optionally, the bottom of the stirring rod extends outward, and the shape of the extended portion of the stirring rod is compatible with the shape of the inner wall of the stirring chamber.

[0015] The above technical solution is adopted: by setting the bottom of the mixing bin into a forked arc shape, it can fully contact the UHPC dry mix in the mixing bin, avoiding the situation where the UHPC dry mix at the bottom of the mixing bin is not fully mixed.

[0016] The utility model has the following advantages:

[0017] 1. The mixing and stirring device for UHPC dry mix is ​​provided with a feed funnel fixedly connected to a support ring at the feed inlet to increase the area of ​​the feed inlet, so that the feeding of the device is more convenient, and a stirring rod that does not contact the stirring bin can be installed through the feed funnel. During the rotation of the stirring bin, the stirring rod is kept in a vertical state for stirring and rotating, and the stirring efficiency of the device is improved by the stirring combination of the two modes, and the bottom of the stirring bin is set to a forked arc shape, so that the UHPC dry mix in the stirring bin can be fully contacted, and the situation that the UHPC dry mix at the bottom of the stirring bin is not fully stirred is avoided.

[0018] 2. The mixing and stirring device for UHPC dry mix is ​​provided with a relatively rotating stirring chamber on the inner side of the support ring, and the rotation of the stirring chamber itself causes the UHPC dry mix inside to be turned over and stirred, thereby improving the stirring efficiency; a gear driven by a second motor is provided at the bottom of the support ring, and the rotation of the gear drives the rack and the stirring chamber to rotate, thereby causing the UHPC dry mix inside the stirring chamber to be turned over and stirred; an end cover is provided at the discharge port to seal it, so that the interior of the stirring chamber remains flat, which facilitates the stirring of the UHPC dry mix; after the stirring is completed, the end cover is opened for convenient discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0025] In the figure: 1-support frame, 2-support ring, 3-stirring bin, 4-feeding funnel, 5-first motor, 6-stirring rod, 7-second motor, 8-gear, 9-rack, 10-feeding port, 11-discharging port, 12-end cover, 13-connecting plate. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1 to 6 As shown, a mixing and stirring device suitable for UHPC dry mix comprises a plurality of support frames 1, support rings 2 are fixedly connected between the support frames 1, a mixing bin 3 is rotatably connected to the inner side of the support ring 2, a feed hopper 4 is fixedly connected to the top of the support ring 2, a first motor 5 is fixedly connected to one side of the bottom of the feed funnel 4, and a stirring rod 6 is fixedly connected to the output end of the first motor 5.

[0028] Embodiment 1: The inner wall shape of the support ring 2 is arc-shaped, the stirring chamber 3 is spherical, the inner wall shape of the support ring 2 is adapted to the outer shape of the stirring chamber 3, the axis of the support ring 2 is inclined, and the axis of relative rotation between the support ring 2 and the stirring chamber 3 coincides with the axis of the support ring 2. By arranging a relatively rotating stirring chamber 3 on the inner side of the support ring 2, the rotation of the stirring chamber 3 itself causes the internal UHPC dry mix to be flipped and stirred, thereby improving the stirring efficiency.

[0029] Embodiment 2: A second motor 7 is fixedly connected to one side of the bottom of the support ring 2, a gear 8 is fixedly connected to the output end of the second motor 7, a rack 9 is fixedly connected to the outer side of the bottom of the mixing chamber 3, the gear 8 is meshed with the rack 9, the rack 9 is annular and its axis coincides with the axis of the support ring 2, and a gear 8 driven by the second motor 7 is arranged at the bottom of the support ring 2, and the rotation of the gear 8 drives the rack 9 and the mixing chamber 3 to rotate, so that the UHPC dry mixture inside the mixing chamber 3 is turned over for mixing.

[0030] Embodiment 3: A feed port 10 is provided at the top of the mixing bin 3, a discharge port 11 is provided at the bottom of the mixing bin 3, an end cover 12 is connected to the inner thread of the discharge port 11, and the inner surface of the end cover 12 is adapted to the shape of the inner wall of the mixing bin 3. The end cover 12 is provided at the discharge port 11 to seal it, so that the interior of the mixing bin 3 remains flat, which facilitates the mixing of the UHPC dry mix. After the mixing is completed, the end cover 12 is opened for easy discharge.

[0031] Embodiment 4: A plurality of connecting plates 13 are fixedly connected to the top of the support ring 2, and the support ring 2 is fixedly connected to the feed hopper 4 through the connecting plates 13. The position of the feed hopper 4 corresponds to the position of the feed port 10, and one side of the feed hopper 4 is fixedly connected to one side of the first motor 5. By arranging the feed funnel 4 fixedly connected to the support ring 2 at the feed port 10, the area of ​​the feed port 10 is increased, so that the feeding of the device is more convenient, and the stirring rod 6 that does not contact the stirring bin 3 can be installed through the feed funnel 4. During the rotation of the stirring bin 3, the stirring rod 6 remains in a vertical state for stirring and rotation, and cooperates with the turning and stirring of the material in the stirring bin. The stirring efficiency of the device is improved by the stirring combination of the two methods.

[0032] Embodiment 5: The bottom of the stirring rod 6 extends outward, and the shape of the extended portion of the stirring rod 6 is adapted to the shape of the inner wall of the stirring chamber 3. By setting the bottom of the stirring chamber 6 to a forked arc shape, it can fully contact the UHPC dry mix in the stirring chamber 3, thereby avoiding the situation where the UHPC dry mix at the bottom of the stirring chamber 3 is not fully stirred.

[0033] The working principle of the utility model is as follows:

[0034] S1. The feeding funnel 4 can increase the area of ​​the feeding port 10, making the feeding of the device more convenient, and the stirring rod 6 that does not contact the stirring bin 3 can be installed through the feeding funnel 4. During the rotation of the stirring bin 3, the stirring rod 6 is kept in a vertical state for stirring and rotating, and the stirring efficiency of the device is improved by the stirring combination of the two modes.

[0035] S2. A gear 8 driven by a second motor 7 is provided at the bottom of the support ring 2. The rotation of the gear 8 drives the rack 9 and the mixing chamber 3 to rotate, so that the UHPC dry mix inside the mixing chamber 3 is turned over for mixing.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The mixing and stirring device for UHPC dry mix is ​​provided with a feed hopper 4 fixedly connected to a support ring 2 at a feed port 10 to increase the area of ​​the feed port 10, so that the feeding of the device is more convenient, and a stirring rod 6 which does not contact the stirring bin 3 can be installed through the feed hopper 4. During the rotation of the stirring bin 3, the stirring rod 6 is kept in a vertical state for stirring and rotating, and the stirring efficiency of the device is improved by the stirring combination of the two modes. The bottom of the stirring bin 6 is set to a forked arc shape, so that it can fully contact the UHPC dry mix in the stirring bin 3, and the situation that the UHPC dry mix at the bottom of the stirring bin 3 is not fully stirred is avoided.

[0038] 2. The mixing and stirring device for UHPC dry mix is ​​provided with a relatively rotating stirring chamber 3 on the inner side of the support ring 2, and the rotation of the stirring chamber 3 itself causes the UHPC dry mix inside to be turned over and stirred, thereby improving the stirring efficiency; a gear 8 driven by a second motor 7 is provided at the bottom of the support ring 2, and the rotation of the gear 8 drives the rack 9 and the stirring chamber 3 to rotate, thereby causing the UHPC dry mix inside the stirring chamber 3 to be turned over and stirred; an end cover 12 is provided at the discharge port 11 to seal it, so that the interior of the stirring chamber 3 remains flat, which is convenient for stirring the UHPC dry mix; after the stirring is completed, the end cover 12 is opened for convenient discharge.

Claims

1. A mixing and stirring device suitable for UHPC dry mix, characterized by: The invention comprises a plurality of support frames (1), wherein support rings (2) are fixedly connected between the support frames (1), a stirring chamber (3) is rotatably connected to the inner side of the support ring (2), a feed hopper (4) is fixedly connected to the top of the support ring (2), a first motor (5) is fixedly connected to one side of the bottom of the feed hopper (4), and a stirring rod (6) is fixedly connected to the output end of the first motor (5).

2. The mixing and stirring device for UHPC dry mix according to claim 1, characterized in that: The inner wall shape of the support ring (2) is arc-shaped, the stirring chamber (3) is spherical, the inner wall shape of the support ring (2) is matched with the outer shape of the stirring chamber (3), the axis of the support ring (2) is in an inclined state, and the axis of relative rotation between the support ring (2) and the stirring chamber (3) coincides with the axis of the support ring (2).

3. A mixing and stirring device suitable for UHPC dry mix according to claim 2, characterized in that: A second motor (7) is fixedly connected to one side of the bottom of the support ring (2), a gear (8) is fixedly connected to the output end of the second motor (7), a rack (9) is fixedly connected to the outer side of the bottom of the stirring chamber (3), the gear (8) is meshed with the rack (9), and the rack (9) is annular and its axis coincides with the axis of the support ring (2).

4. The mixing and stirring device for UHPC dry mix according to claim 3, characterized in that: The top of the stirring chamber (3) is provided with a feed port (10), the bottom of the stirring chamber (3) is provided with a discharge port (11), the inner thread of the discharge port (11) is connected with an end cover (12), and the inner surface of the end cover (12) is adapted to the shape of the inner wall of the stirring chamber (3).

5. The mixing and stirring device for UHPC dry mix according to claim 4, characterized in that: A plurality of connecting plates (13) are fixedly connected to the top of the support ring (2); the support ring (2) is fixedly connected to the feed hopper (4) via the connecting plates (13); the position of the feed hopper (4) corresponds to the position of the feed port (10); and one side of the feed hopper (4) is fixedly connected to one side of the first motor (5).

6. The mixing and stirring device for UHPC dry mix according to claim 5, characterized in that: The bottom of the stirring rod (6) extends outward, and the shape of the extended portion of the stirring rod (6) is compatible with the shape of the inner wall of the stirring chamber (3).

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