Ultra-high performance concrete mixing device

Abstract

The utility model discloses an ultra-high performance concrete mixing device which is characterized in that a stirring shaft is arranged in a stirring box body, the stirring shaft is in transmission connection with a driving motor, and an end cover is arranged at the upper end of the stirring box body; the end cover comprises a central end cover and an edge end cover which are sleeved in an internal and external rotating manner, the edge end cover is fixedly sleeved with the feeding hole of the stirring box body, one end of the central end cover is coaxially connected with the second end of the stirring shaft, a plurality of cutting knives are arranged at the other end of the central end cover, and a plurality of through holes for communicating the inner cavity with the outside are formed in the central end cover and the edge end cover. According to the utility model, the end cover is additionally arranged at the feeding hole of the stirring box body, and the end cover is divided into two feeding sections which respectively comprise a central end cover feeding section for bagged materials and an edge end cover feeding object for blocky materials, so that the cutting efficiency of packaging bags is improved; and blocky materials can be directly fed from the through holes in the edge end cover, so that the material feeding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, and in particular to an ultra-high performance concrete mixing device. Background Technology

[0002] Ultra-high performance concrete (UHPC) is a new type of building material known for its excellent mechanical properties and durability, and is widely used in bridges, tunnels, large buildings and national defense projects.

[0003] In the process of mixing ultra-high performance concrete, the materials mainly include bagged powder and lumpy ore. Currently, when feeding bagged powder into the mixing device, the packaging bags need to be cut first, and then the damaged bags are placed into the mixing device for dumping. However, during this process, some powder spills out directly from the damaged openings in the packaging bags, which not only wastes materials and reduces material feeding efficiency, but also affects the breathing quality of construction workers. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an ultra-high performance concrete mixing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ultra-high performance concrete mixing device includes: a mixing tank, a drive motor, a mixing shaft, and an end cover;

[0007] The mixing chamber is equipped with a coaxially arranged mixing shaft. The first end of the mixing shaft is rotatably connected to the bottom surface of the mixing chamber and is connected to the drive motor. The upper end of the mixing chamber is provided with a feed inlet that connects the inner chamber to the outside. An end cap is installed at the feed inlet of the mixing chamber to block the feed inlet.

[0008] The end cap includes a central end cap and an edge end cap that are rotated together. The edge end cap is fixedly connected to the inlet of the mixing tank. One end of the central end cap is coaxially connected to the second end of the mixing shaft. The other end face of the central end cap is provided with several cutting blades. Both the central end cap and the edge end cap are provided with several through holes that connect the inner cavity to the outside.

[0009] Preferably, the center end cap includes a center protrusion, several ring blocks, an outer ring block, and several connecting portions that connect the outer wall of the center protrusion and the inner wall of the outer ring block;

[0010] The inner diameter of several ring blocks increases sequentially and is located between the outer wall of the central protrusion and the inner wall of the outer ring block. The central protrusion, several ring blocks, and outer ring blocks are arranged coaxially. A predetermined interval is set between the inner and outer walls of adjacent ring blocks to form a through hole for the central end cap. One end of several ring blocks is connected to a connecting part, and several cutting blades are provided on one end of several ring blocks.

[0011] A drill bit is coaxially mounted on one end of the central protrusion facing away from the inner cavity of the mixing tank.

[0012] Preferably, a plurality of cutting blades are arranged in a circumferential array about the axis of the central end cap, and the cutting blades include a first cutting edge and a second cutting edge arranged on opposite sides, the first cutting edge having a serrated structure.

[0013] Preferably, the edge end cap includes an inner ring end cap, an outer ring end cap, and a connecting part that connects the inner ring end cap and the outer ring end cap. The inner wall of the inner ring end cap is provided with a second sliding sleeve, and the outer wall of the outer ring block is provided with a first sliding sleeve that forms a sliding engagement with the second sliding sleeve.

[0014] A pre-set gap is formed between the outer wall of the inner ring end cap and the inner wall of the outer ring end cap to form a through hole in the edge end cap.

[0015] Preferably, the edge end cap further includes a plurality of connecting ring blocks with gradually increasing inner diameters. One end of the connecting ring block is connected to the connecting part. The connecting ring block is located between the inner ring end cap and the outer ring end cap and is arranged coaxially with the inner ring end cap and the outer ring end cap.

[0016] Preferably, the inner diameter of the end of the connecting ring block facing the inner cavity of the mixing tank is smaller than the inner diameter of the end of the connecting ring block facing away from the inner cavity of the mixing tank, so that the cross-section of the connecting ring block has an inclined structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adds an end cap to the inlet of the mixing tank, dividing the end cap into two feeding zones, including a central end cap feeding zone for bagged materials and an edge end cap feeding zone for lumpy materials. This allows the packaging bag containing powdered material to come into contact with the cutting blade on the central end cap, achieving initial cutting of the packaging bag under the action of the cutting blade tip. Driven by the mixing shaft, the central end cap rotates synchronously with the mixing shaft, causing several cutting blades to rotate, achieving secondary cutting of the packaging bag containing powdered material. The powdered material then enters the inner cavity of the mixing tank through the through holes on the central and edge end caps, improving the cutting efficiency of the packaging bag and thus improving the convenience of material feeding. If it is necessary to feed lumpy materials such as ores, the lumpy materials can be directly fed through the through holes on the edge end caps, thereby improving the material feeding efficiency. Attached Figure Description

[0018] To illustrate the technical solutions in the embodiments of this utility model or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the structure proposed in this utility model;

[0020] Figure 2 This is a front view schematic diagram of the structure proposed in this utility model;

[0021] Figure 3 This is a partially enlarged schematic diagram of the structure proposed in this utility model;

[0022] Figure 4 This is a partial cross-sectional schematic diagram of the structure proposed in this utility model.

[0023] In the diagram: 1. Mixing tank body; 2. Drive motor; 3. Mixing shaft; 4. End cover; 4. Center end cover; 41. Center protrusion; 411. Collar ring block; 412. Outer collar ring block; 413. Connecting part; 414. First sliding sleeve; 415. Drill head; 416. Edge end cover; 42. Inner ring end cover; 421. Outer ring end cover; 422. Connecting part; 423. Second sliding sleeve; 424. Cutting blade; 5. Connecting ring block; 6. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1 and Figure 2 An ultra-high performance concrete mixing device includes: a mixing tank 1, a drive motor 2, a mixing shaft 3, and an end cover 4.

[0026] The mixing chamber 1 has a coaxially arranged mixing shaft 3 in its inner cavity. The first end of the mixing shaft 3 is rotatably connected to the bottom surface of the mixing chamber 1 and is connected to the drive motor 2. The upper end of the mixing chamber 1 has an inlet that connects the inner cavity to the outside. The end cover 4 is installed at the inlet of the mixing chamber 1 to block the inlet.

[0027] The end cap 4 includes a central end cap 51 and an edge end cap 42 that are rotated together. The edge end cap 42 is fixedly connected to the inlet of the mixing tank 1. One end of the central end cap 51 is coaxially connected to the second end of the mixing shaft 3. The other end face of the central end cap 51 is provided with several cutting blades 5. Both the central end cap 51 and the edge end cap 42 are provided with several through holes that connect the inner cavity to the outside.

[0028] In actual use, the ultra-high performance concrete material is put into the mixing tank 1, and the drive motor 2 is started to drive the mixing shaft 3 to rotate, thereby realizing the mixing operation of the material through the mixing shaft 3.

[0029] During this period, the packaging bag containing the powdered material is placed directly on the end cap 4, and the packaging bag containing the powdered material comes into contact with the cutting blade 5 on the central end cap 51. The tip of the cutting blade 5 performs a preliminary cut on the packaging bag. Driven by the stirring shaft 3, the central end cap 51 and the stirring shaft 3 rotate synchronously, thereby causing several cutting blades 5 to rotate and perform a secondary cut on the packaging bag containing the powdered material. The powdered material enters the inner cavity of the mixing chamber 1 through the through holes on the central end cap 51 and the edge end cap 42, improving the cutting efficiency of the packaging bag and thus improving the convenience of material feeding. If it is necessary to feed lumpy materials such as ore, the lumpy materials can be directly fed through the through holes on the edge end cap 42.

[0030] This application proposes an ultra-high performance concrete mixing device, which adds an end cover 4 to the inlet of the mixing tank 1 and divides the end cover 4 into two feeding zones, including a central end cover 51 feeding zone for bagged materials and an edge end cover 42 feeding zone for block materials. Based on the mixing shaft 3 driving several cutting blades 5 to cut the bagged materials, the material feeding efficiency is improved.

[0031] In this embodiment, reference Figure 3 and Figure 4 The center end cap 51 includes a center protrusion 411, a plurality of ring blocks 412, an outer ring block 413, and a plurality of connecting parts 414, wherein the plurality of connecting parts 414 are used to connect the outer wall of the center protrusion 411 and the inner wall of the outer ring block 413.

[0032] The inner diameters of the plurality of ring blocks 412 increase sequentially and are located between the outer wall of the central protrusion 411 and the inner wall of the outer ring block 413. The central protrusion 411, the plurality of ring blocks 412, and the outer ring block 413 are arranged coaxially. A predetermined interval is set between the inner and outer walls of adjacent ring blocks 412 to form a through hole for the central end cap 51. The end of the plurality of ring blocks 412 facing the inner cavity of the mixing tank 1 is connected to the connecting part 414. The end of the plurality of ring blocks 412 facing away from the inner cavity of the mixing tank 1 is provided with a plurality of cutting blades 5.

[0033] The central protrusion 411 is coaxially provided with a drill bit 416 at one end facing away from the inner cavity of the mixing tank 1.

[0034] When the packaging bag containing powdered material is placed on the central end cap 51, the drill head 416 first cuts the packaging bag, and then several cutting blades 5 cut the packaging bag. When the stirring shaft 3 drives the central end cap 51 to rotate synchronously, the several cutting blades 5 and the drill head 416 rotate synchronously, making large cuts on the packaging bag. This allows the packaged material inside the packaging bag to fall into the inner cavity of the mixing chamber 1 through the predetermined interval between the inner and outer walls of the adjacent collar blocks 412 under its own gravity. At the same time, the staff can pull the packaging bag to assist in the dumping of the powdered material.

[0035] exist Figure 3 In the example shown, a plurality of cutting blades 5 are arranged in a circular array about the axis of the central end cap 51, and the cutting blades 5 include a first cutting edge and a second cutting edge arranged on opposite sides. The first cutting edge adopts a serrated structure, which improves the efficiency of the cutting blades 5 in cutting the packaging bag. The plurality of cutting blades 5 are arranged in a circular array about the axis of the central end cap 51, so that the cutting paths of the plurality of cutting blades 5 on each ring block 412 are consistent, thereby further improving the overall cutting efficiency of the plurality of cutting blades 5 on the same ring block 412.

[0036] Specifically, the edge end cap 42 includes an inner ring end cap 421, an outer ring end cap 422, and a connecting part 423 connecting the inner ring end cap 421 and the outer ring end cap 422. The inner wall of the inner ring end cap 421 is provided with a second sliding sleeve 424, and the outer wall of the outer ring block 413 is provided with a first sliding sleeve 415 corresponding to the second sliding sleeve 424. The second sliding sleeve 424 and the first sliding sleeve 415 enable the outer wall of the outer ring block 413 to form a sliding sleeve with the inner wall of the inner ring end cap 421.

[0037] Furthermore, a predetermined gap is established between the outer wall of the inner ring end cap 421 and the inner wall of the outer ring end cap 422 to form a through hole in the edge end cap 42. It can be seen that the through hole in the edge end cap 42 is larger than the through hole diameter of the center end cap 51 to allow the entry of blocky materials.

[0038] Meanwhile, the edge end cap 42 also includes a number of connecting ring blocks 6 with gradually increasing inner diameters. One end of the connecting ring block 6 is connected to the connecting part 423, and the connecting ring block 6 is located between the inner ring end cap 421 and the outer ring end cap 422 and is arranged coaxially with the inner ring end cap 421 and the outer ring end cap 422. By adding the connecting ring block 6, the correlation of the connecting parts 423 is improved, and the overall firmness of the edge end cap 42 is improved.

[0039] The inner diameter of the end of the connecting ring block 6 facing the inner cavity of the mixing tank 1 is smaller than the inner diameter of the end of the connecting ring block 6 facing away from the inner cavity of the mixing tank 1, so that the cross-section of the connecting ring block 6 has an inclined structure. When the blocky material falls onto the side of the connecting ring block 6, the inclined surface of the connecting ring block 6 will directly guide the blocky material to roll down to the center of the inner cavity of the mixing tank 1.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-performance concrete mixing device, characterized in that, include: Mixing tank body (1), drive motor (2), stirring shaft (3), end cover (4); The mixing chamber (1) has a coaxially arranged mixing shaft (3) in its inner cavity. The first end of the mixing shaft (3) is rotatably connected to the bottom surface of the mixing chamber (1) and is connected to the drive motor (2) for transmission. The upper end of the mixing chamber (1) has an inlet that connects the inner cavity to the outside. The end cap (4) is installed at the inlet of the mixing chamber (1) to block the inlet. The end cap (4) includes a central end cap (51) and an edge end cap (42) that are rotated together. The edge end cap (42) is fixedly connected to the inlet of the mixing tank (1). One end of the central end cap (51) is coaxially connected to the second end of the mixing shaft (3). The other end face of the central end cap (51) is provided with several cutting blades (5). Both the central end cap (51) and the edge end cap (42) are provided with several through holes that connect the inner cavity to the outside.

2. The ultra-high performance concrete mixing device according to claim 1, characterized in that, The central end cap (51) includes a central protrusion (411), a plurality of ring blocks (412), an outer ring block (413), and a plurality of connecting parts (414) that connect the outer wall of the central protrusion (411) and the inner wall of the outer ring block (413). The inner diameters of the plurality of ring blocks (412) increase sequentially and are located between the outer wall of the central protrusion (411) and the inner wall of the outer ring block (413). The central protrusion (411), the plurality of ring blocks (412), and the outer ring block (413) are arranged coaxially. A predetermined interval is set between the inner and outer walls of adjacent ring blocks (412) to form a through hole of the central end cap (51). One end of the plurality of ring blocks (412) is connected to the connecting part (414). A plurality of cutting blades (5) are provided on one end of the plurality of ring blocks (412). The central protrusion (411) is coaxially provided with a drill bit (416) at one end of the inner cavity of the mixing tank (1) facing away from the mixing tank body (1).

3. The ultra-high performance concrete mixing device according to claim 2, characterized in that, The plurality of cutting blades (5) are arranged in a circular array about the axis of the central end cap (51), and the cutting blades (5) include a first cutting edge and a second cutting edge arranged on opposite sides, wherein the first cutting edge adopts a serrated structure.

4. The ultra-high performance concrete mixing device according to claim 2, characterized in that, The edge end cap (42) includes an inner ring end cap (421), an outer ring end cap (422), and a connecting part (423) connecting the inner ring end cap (421) and the outer ring end cap (422). The inner wall of the inner ring end cap (421) is provided with a second sliding sleeve (424), and the outer wall of the outer ring block (413) is provided with a first sliding sleeve (415) that forms a sliding connection with the second sliding sleeve (424). A predetermined gap is formed between the outer wall of the inner ring end cap (421) and the inner wall of the outer ring end cap (422) to form a through hole in the edge end cap (42).

5. The ultra-high performance concrete mixing device according to claim 2, characterized in that, The edge end cap (42) also includes several connecting ring blocks (6) with gradually increasing inner diameters. One end of the connecting ring block (6) is connected to the connecting part (423). The connecting ring block (6) is located between the inner ring end cap (421) and the outer ring end cap (422) and is coaxially arranged with the inner ring end cap (421) and the outer ring end cap (422).

6. The ultra-high performance concrete mixing device according to claim 5, characterized in that, The inner diameter of the connecting ring block (6) facing the inner cavity of the mixing tank (1) is smaller than the inner diameter of the connecting ring block (6) facing away from the inner cavity of the mixing tank (1), so that the cross-section of the connecting ring block (6) is a sloping structure.

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