Steel fiber dispersing device for preparing ultra-high performance concrete

Abstract

The utility model discloses a steel fiber dispersing device for preparing ultra-high performance concrete, which belongs to the technical field of building material processing, and comprises a vibration stock bin, a baffle and a throwing component, a vibration motor is arranged below the vibration stock bin and used for driving the vibration stock bin to generate high-frequency vibration, and the baffle is arranged below the vibration stock bin. The baffle is arranged in the vibration stock bin, a certain gap is reserved between the baffle and the inner wall of the bottom of the vibration stock bin, the baffle is used for intercepting caked steel fibers, and the throwing assembly is arranged on one side of the input end of the baffle and used for throwing and dispersing the intercepted caked steel fibers. According to the steel fiber dispersing device, the grabbing hooks can continuously grab and throw clustered steel fibers, the thrown steel fibers are not limited by the inner wall of the vibration stock bin any more, are dispersed under the action of gravity and air and then pass through a gap between the baffle and the inner wall of the bottom of the vibration stock bin, and therefore the steel fiber dispersing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building material processing, in particular to a steel fiber dispersing device for preparing ultra-high performance concrete. Background Art

[0002] Compared with ordinary concrete, ultra-high performance concrete, in addition to cement and coarse and fine aggregates, also adds a certain amount of steel fibers. These steel fibers can significantly improve the toughness, tensile strength and crack resistance of concrete, thereby improving the overall performance and durability of the building structure.

[0003] When adding steel fibers, in order to ensure that each part of the concrete can obtain the same reinforcement effect, the steel fibers need to be evenly distributed in the concrete, and the steel fibers can usually be straight, curved, spiral, etc. Such shapes may cause the steel fibers to clump, and the clumped steel fibers may hinder the flow of concrete, making it difficult for the mixture to be fully dense. Therefore, when adding steel fibers in concrete preparation, the steel fibers are usually dispersed to ensure that a uniform reinforcement effect can be provided in all directions.

[0004] At present, the dispersion method of steel fibers usually adopts shaking to shake the piles of steel fibers so that the steel fibers are dispersed and fall from the screen or partition. However, when the steel fibers are densely clustered, this method is not conducive to the dispersion of the steel fibers. Moreover, due to the curved and spiral structures of the steel fibers, the screen is easily blocked. There is also a method of using a vibration disperser to generate high-frequency vibration to make the steel fibers move quickly in the vibration silo to achieve the purpose of dispersion. Although this method will not block the screen, when more steel fibers are put into the silo together, the effect of vibration dispersion of the clustered steel fibers is poor. Utility Model Content

[0005] The embodiment of the present utility model provides a steel fiber dispersion device for preparing ultra-high performance concrete to solve the above-mentioned technical problems.

[0006] The embodiment of the present utility model adopts the following technical scheme: it includes a vibrating silo, a baffle and a spreading assembly, a vibrating motor is provided under the vibrating silo for driving the vibrating silo to generate high-frequency vibration, the baffle is provided inside the vibrating silo and a certain gap is left between the baffle and the bottom inner wall of the vibrating silo for intercepting the clumped steel fibers, the spreading assembly is provided on one side of the input end of the baffle for spreading and dispersing the intercepted clumped steel fibers, the spreading assembly includes a rotating rod rotatably connected to the inside of the vibrating silo and a plurality of groups of grabbing hooks provided on the rotating rod, and the plurality of groups of grabbing hooks are staggered on the rotating rod, a driving part for driving the rotating rod to rotate is provided on the outside of the vibrating silo, and the clumped steel fibers are continuously spread by the grabbing hooks following the rotation of the rotating rod, so that the dispersion effect is better.

[0007] Furthermore, it also includes an intermittent feeding component for the steel fiber gaps to enter the vibrating silo. The intermittent feeding component includes a rotating shaft rotatably connected to the entrance of the vibrating silo and a plurality of partition plates connected to the rotating shaft. A loading cavity is surrounded between two adjacent partition plates, so that the steel fiber gaps fall into the vibrating silo, avoiding excessive entry at one time and resulting in poor dispersion efficiency.

[0008] Furthermore, the rotating rod and the end of the rotating shaft extending to the outside of the vibrating silo are both provided with pulleys, and the two pulleys are connected by a transmission belt, so that the steel fibers can be thrown and intermittently discharged at the same time.

[0009] Furthermore, a stepped discharge plate is provided on the bottom inner wall of the vibration silo, and the height of the discharge plate gradually decreases from the input end to the output end of the vibration silo, so that the steel fibers can fall from high to low, further dispersing the steel fibers.

[0010] Furthermore, the end of the grab hook away from the rotating rod is provided with a plurality of rake claws with tapered tips facing outwards, which can penetrate into the clumped steel fibers to scatter and disperse the steel fibers.

[0011] Furthermore, a blocking plate is provided at the upper end of the baffle, and both sides of the blocking plate are connected to the side walls of the vibration silo, which is used to block above the spreading component to prevent the spreading component from spreading steel fibers to the outside of the vibration silo.

[0012] At least one of the above technical solutions adopted in the embodiment of the present utility model can achieve the following beneficial effects:

[0013] In the utility model, the high-frequency vibration of the vibrating silo is used to make the steel fibers move quickly in the vibrating silo. The dispersed steel fibers can pass through the baffle and the bottom of the vibrating silo. After the clumped and undispersed steel fibers are blocked by the baffle, the driving member drives the rotation of the rotating rod, so that the grab hook can continuously grab the clumped steel fibers and scatter them. The scattered steel fibers are no longer bound by the inner wall of the vibrating silo and are dispersed under the action of gravity and air. Thereafter, they pass through the gap between the baffle and the bottom inner wall of the vibrating silo, thereby improving the efficiency of steel fiber dispersion and preventing the clumped steel fibers from being blocked on one side of the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the vibration silo in the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the vibrating silo of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the sprinkler assembly in the present utility model;

[0020] Figure 6 It is a schematic diagram of the connection structure between the grab hook and the rake claw in the utility model.

[0021] Reference numerals

[0022] Vibrating silo 1, vibrating motor 11, support frame 12, spring 13, baffle 2, rotating rod 3, grab hook 31, driving member 32, rotating shaft 4, partition plate 41, loading chamber 42, pulley 5, transmission belt 51, discharge plate 6, rake claw 7, and blocking plate 8. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0024] The technical solutions provided by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] The embodiment of the present utility model provides a steel fiber dispersion device for preparing ultra-high performance concrete, including a vibrating silo 1, a baffle 2 and a throwing assembly. A vibrating motor 11 is provided under the vibrating silo 1 for driving the vibrating silo 1 to generate high-frequency vibrations. A support frame 12 is provided at the bottom of the vibrating silo 1, and a spring 13 is connected between the support frame 12 and the vibrating silo 1. The vibrating silo 1 is supported by the support frame 12. When the vibrating motor 11 generates high-frequency vibrations to drive the vibrating silo 1 to vibrate synchronously, the vibration amplitude can be increased by the spring 13, thereby improving the dispersion effect of the steel fibers in the vibrating silo 1. This technology is prior art, and those skilled in the art should be aware of it, so it will not be described in detail here.

[0026] The baffle 2 is used to intercept the clumped steel fibers, and the baffle 2 is arranged inside the vibrating silo 1 and a certain gap is left between the baffle 2 and the bottom inner wall of the vibrating silo 1. When the steel fibers enter the vibrating silo 1, they move and disperse under the vibration of the vibrating silo 1. Single scattered steel fibers can pass through the gap between the baffle 2 and the bottom inner wall of the vibrating silo 1, while the clumped steel fibers will be intercepted by the baffle 2 because their accumulation height is higher than that of individual steel fibers and cannot pass through the baffle 2. In order to avoid the accumulation of clumped steel fibers, a scattering component is provided on one side of the input end of the baffle 2 to scatter and disperse the clumped steel fibers intercepted by the baffle 2. The scattering component The components include a rotating rod 3 rotatably connected to the inside of the vibrating silo 1 and multiple groups of grab hooks 31 provided on the rotating rod 3, and the multiple groups of grab hooks 31 are staggered on the rotating rod 3. A driving component 32 for driving the rotating rod 3 to rotate is provided on the outside of the vibrating silo 1. The driving component 32 can be a motor or other equipment that can drive the rotating rod 3 to rotate, and the rotation direction of the rotating rod 3 is opposite to the conveying direction of the steel fiber in the vibrating silo 1. When the rotating rod 3 drives the grab hook 31 to rotate, the grab hook 31 hooks the clumped steel fibers and throws them upwards. The clumped steel fibers are no longer bound by the inner wall of the vibrating silo 1 and are dispersed under the action of gravity and air, thereby being dispersed and discharged through the baffle 2.

[0027] Preferably, in order to avoid a large amount of steel fibers entering the vibrating silo 1 at one time and affecting the dispersion effect, an intermittent unloading component for the steel fibers to enter the vibrating silo 1 intermittently is provided at the input port of the vibrating silo 1. The intermittent unloading component includes a rotating shaft 4 rotatably connected to the inlet of the vibrating silo 1 and a plurality of partition plates 41 connected to the rotating shaft 4. A loading cavity 42 is provided between two adjacent partition plates 41. After the steel fibers are put into the vibrating silo 1, they first enter the loading cavity 42. As the rotating shaft 4 rotates, the steel fibers in the loading cavity 42 fall into the vibrating silo 1 intermittently in batches, thereby improving the subsequent dispersion efficiency.

[0028] Preferably, the rotating rod 3 and the rotating shaft 4 extending to the outside of the vibrating silo 1 are both provided with a pulley 5, and the two pulleys 5 are connected by a transmission belt 51. When the spreading component is in motion, the transmission belt 51 can drive the rotating shaft 4 to rotate synchronously to perform intermittent unloading at the same time.

[0029] Preferably, a stepped discharge plate 6 is provided on the inner wall of the bottom of the vibrating silo 1, and the height of the discharge plate 6 gradually decreases from the input end to the output end of the vibrating silo 1. The steel fibers moving to the side of the output end of the baffle 2 are continuously transported to the output end of the vibrating silo 1. When some steel fibers that are initially agglomerated fall from the higher discharge plate 6 to the lower discharge plate 6, the impact force during the fall can exert additional force to promote the dispersion of the steel fibers due to the low compactness of the agglomerates, thereby further improving the dispersion effect. When in use, the output end of the vibrating silo 1 is placed above the concrete production equipment to add the dispersed steel fibers to the concrete mixture.

[0030] Preferably, the end of the hook 31 away from the rotating rod 3 is provided with a plurality of rake claws 7 with tapered tips facing outwards. When the hook 31 hooks the clumped steel fibers, the rake claws 7 can be more easily inserted into the clumped steel fibers to complete the hooking of the steel fibers and facilitate throwing.

[0031] Preferably, a sealing plate 8 is provided at the upper end of the baffle 2, and both sides of the sealing plate 8 are connected to the side walls of the vibrating silo 1 to form a closed space above the spreading component to prevent the steel fiber from being scattered out of the vibrating silo 1 when being thrown, affecting the use effect.

[0032] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A steel fiber dispersing device for preparing ultra-high performance concrete, characterized in that: include; A vibrating silo (1), wherein a vibrating motor (11) is provided below the vibrating silo (1) for driving the vibrating silo (1) to generate high-frequency vibration; A baffle (2) is provided inside the vibrating silo (1) and has a certain gap with the bottom inner wall of the vibrating silo (1), and is used to intercept agglomerated steel fibers; A throwing assembly is provided on one side of the input end of the baffle (2) and is used for throwing and dispersing the intercepted clumped steel fibers. The throwing assembly comprises a rotating rod (3) rotatably connected to the interior of the vibrating silo (1) and a plurality of groups of grabbing hooks (31) provided on the rotating rod (3), wherein the plurality of groups of grabbing hooks (31) are staggeredly arranged on the rotating rod (3). A driving member (32) for driving the rotating rod (3) to rotate is provided on the outer side of the vibrating silo (1).

2. The steel fiber dispersing device for preparing ultra-high performance concrete according to claim 1, characterized in that: The invention also includes an intermittent feeding assembly for the steel fiber gap to enter the vibrating silo (1), the intermittent feeding assembly including a rotating shaft (4) rotatably connected to the entrance of the vibrating silo (1) and a plurality of partition plates (41) connected to the rotating shaft (4), and a loading cavity (42) is provided between two adjacent partition plates (41).

3. The steel fiber dispersing device for preparing ultra-high performance concrete according to claim 2, characterized in that: The rotating rod (3) and the rotating shaft (4) are both provided with pulleys (5) at one end extending to the outside of the vibrating silo (1), and the two pulleys (5) are connected by a transmission belt (51).

4. The steel fiber dispersing device for preparing ultra-high performance concrete according to claim 1, characterized in that: A stepped discharge plate (6) is provided on the inner wall of the bottom of the vibration silo (1), and the height of the discharge plate (6) gradually decreases from the input end to the output end of the vibration silo (1).

5. The steel fiber dispersing device for preparing ultra-high performance concrete according to claim 1, characterized in that: The end of the grab hook (31) away from the rotating rod (3) is provided with a plurality of raking claws (7) with the conical tips facing outwards.

6. The steel fiber dispersing device for preparing ultra-high performance concrete according to claim 1, characterized in that: A blocking plate (8) is provided at the upper end of the baffle (2), and both sides of the blocking plate (8) are connected to the side walls of the vibrating silo (1) for blocking above the spreading assembly.

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