A steel fiber feeding and mixing device

Abstract

This utility model relates to the technical field of mixing devices, specifically a steel fiber feeding and mixing device, comprising: a top frame, a steel fiber barrel, a bottom frame, a screen plate, and a concrete barrel. The top frame is welded and fixed to the top of the steel fiber barrel and the bottom frame. A screen plate is installed at the bottom of the steel fiber barrel, and the top of the concrete barrel is fitted over the bottom of the steel fiber barrel. The device internally houses a mixing assembly, including a mixing sleeve, a mixing shaft, a steel fiber screen mixing blade, mixing blades, and a mixing rod. The mixing sleeve is fitted onto the mixing shaft in the opposite direction, and the steel fiber screen mixing blades are connected to the outside of the mixing sleeve. The mixing blades and rod are connected to the mixing shaft. The device achieves uniform feeding and avoids clumping by arranging the steel fiber barrel and the concrete barrel vertically, combined with the coaxially rotating mixing sleeve and mixing shaft. The self-rotating design of the concrete barrel and the ball bearing limiting structure improve mixing uniformity, thereby increasing production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the technical field of mixing devices, specifically a steel fiber feeding and mixing device. Background Technology

[0002] Landmark buildings and major engineering projects place higher demands on concrete, requiring high strength, good toughness, good fluidity, corrosion resistance, and impact resistance. Steel fibers possess high fatigue resistance, tensile strength, flexural strength, shear strength, and excellent impact resistance, along with better toughness and ductility. They significantly improve the deformation performance of concrete and are economical. Therefore, steel fiber reinforced concrete is widely used in concrete structures for ports and waterways, highway bridges and culverts, tunnels, and industrial and civil buildings in frigid regions.

[0003] In the current technology, the process of adding steel fibers still relies on traditional manual operation: operators need to carry heavy bundles of steel fibers to the feeding port of the mixing equipment, and manually unpack and pour the fibers into the concrete mixer in batches.

[0004] However, the above operation has the following drawbacks: In a high-dust-concentration working environment, operators engage in prolonged high-intensity physical labor, resulting not only in low work efficiency but also risks of personal injury and occupational health and safety hazards due to the sharp characteristics of steel fibers. Manually pouring steel fibers makes it difficult to precisely control their spatial and temporal distribution, easily leading to uneven fiber distribution within the mixer, resulting in regional accumulation or missing fibers. Furthermore, problems such as mismatch between the feeding sequence and mixing rhythm, and concentrated fiber drop trajectories significantly deviate from industry standards for uniform fiber content. In addition, steel fibers are prone to clumping during manual feeding, significantly weakening the continuity of the internal reinforcement structure of the concrete, reducing the material's crack resistance, and ultimately affecting the durability of the engineering structure. Utility Model Content

[0005] The purpose of this invention is to provide a steel fiber feeding and mixing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel fiber feeding and mixing device, comprising: a top frame, characterized in that: the top of the top frame is welded and fixed to the top of the steel fiber barrel, the bottom of the top frame is welded and fixed to the bottom frame, a screen plate is fixedly installed at the bottom of the steel fiber barrel, a concrete barrel is rotatably installed on the upper side of the bottom frame, and the top of the concrete barrel is rotatably sleeved on the bottom of the steel fiber barrel;

[0007] A mixing assembly is installed between the steel fiber bucket and the concrete bucket. The mixing assembly includes a mixing sleeve that is rotatably fitted on the top of the inner side of the steel fiber bucket. A mixing shaft is rotatably fitted inside the mixing sleeve. A steel fiber mixing blade is fixedly connected to the outer ring of the mixing sleeve. A mixing blade is fixedly fitted on the outer ring of the mixing shaft. A mixing rod is arranged in a circular array on the outside of the mixing blade. The mixing rod is fixedly connected to the mixing shaft through a connecting plate.

[0008] Preferably, a filling bucket is fixedly fitted on one side of the upper surface of the steel fiber bucket, a cover plate is slidably inserted into the top of the filling bucket, and a U-shaped frame is fixedly connected to the middle of the upper surface of the steel fiber bucket.

[0009] Preferably, a stirring motor is provided on one side of the U-shaped frame. The stirring motor is fixedly installed on the upper surface of the steel fiber barrel. The output end of the stirring motor is rotatably sleeved on one side of the U-shaped frame, and a drive gear is fixedly sleeved on the output end of the stirring motor.

[0010] Preferably, an upper gear meshes with the upper side of the drive gear, and a lower gear meshes with the lower side of the drive gear. The upper gear is fixedly sleeved on the top of the stirring shaft, and the lower gear is fixedly sleeved on the top of the stirring sleeve. The tops of both the stirring shaft and the stirring sleeve are rotatably sleeved within the U-shaped frame.

[0011] Preferably, a limiting ring is fixedly connected to the top of the concrete bucket, the limiting ring is rotatably sleeved on the bottom of the steel fiber bucket, a rotating ring is fixedly sleeved on the bottom of the concrete bucket, a ball is movably engaged on the lower surface of the rotating ring, and a sealing cap is threadedly connected to the lower surface of the concrete bucket.

[0012] Preferably, the ball bearing is slidably connected to the annular groove on the upper surface of the base frame, and a feeding pipe is fixedly sleeved on the outer ring of the top of the concrete bucket. A toothed ring is provided on the lower side of the feeding pipe, and a large gear is engaged on one side of the toothed ring.

[0013] Preferably, the gear ring is fixedly sleeved on the middle of the outer ring surface of the steel fiber barrel, the large gear is fixedly sleeved on the output end of the rotary motor, and the bottom of the rotary motor is fixedly connected to the base frame.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: Through automated design and structural optimization, the uniform and automatic addition of steel fibers during concrete mixing is achieved. The device employs steel fiber drums and concrete drums arranged sequentially from top to bottom, combined with a coaxially rotating mixing sleeve and shaft, and a screen plate, thereby achieving uniform material feeding and avoiding the problems of low efficiency, uneven distribution, and clumping inherent in traditional manual operations. Simultaneously, the self-rotation design of the concrete drum and the ball bearing limiting structure further enhance the uniformity of mixing between steel fibers and concrete, ensuring that the steel fibers do not clump, significantly improving the production efficiency and quality of steel fiber reinforced concrete, and thus enhancing the durability and crack resistance of concrete structures. This device not only reduces manual labor intensity and manpower requirements but also meets industry standards for the uniformity of steel fiber content, providing higher-quality concrete materials for major projects and landmark buildings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a bottom view of the overall structure of this utility model;

[0017] Figure 3 This is a top view of the internal structure of this utility model;

[0018] Figure 4 This is a side view of the internal structure of this utility model.

[0019] In the diagram: 1. Top frame; 2. Steel fiber drum; 3. Base frame; 4. Screen plate; 5. Concrete drum; 6. Mixing sleeve; 7. Mixing shaft; 8. Steel fiber mixing blade; 9. Mixing blade; 10. Mixing rod; 11. Connecting plate; 12. Feeding bucket; 13. Cover plate; 14. U-shaped frame; 15. Mixing motor; 16. Drive gear; 17. Upper gear; 18. Lower gear; 19. Limiting ring; 20. Rotary ring; 21. Ball bearing; 22. Ring groove; 23. Sealing cover; 24. Feeding pipe; 25. Gear ring; 26. Large gear; 27. Rotary motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1: Please refer to Figures 1-4This utility model provides a technical solution: a steel fiber feeding and mixing device, comprising: a top frame 1, which provides fixed support for the top of the entire device; the top of the top frame 1 is welded and fixed to the top of a steel fiber barrel 2, which is used to hold steel fiber materials; the bottom of the top frame 1 is welded and fixed to a base frame 3, which provides fixed support for the bottom of the entire device; a screen plate 4 is fixedly installed at the bottom of the steel fiber barrel 2; a concrete barrel 5 is rotatably installed on the upper side of the base frame 3, which is used to hold concrete; the top of the concrete barrel 5 is rotatably fitted onto the bottom of the steel fiber barrel 2, allowing the concrete barrel 5 to rotate at the bottom of the steel fiber barrel 2. A mixing assembly is installed between the fiber bucket 2 and the concrete bucket 5. The mixing assembly is used to mix the materials inside the steel fiber bucket 2 and the concrete bucket 5. The mixing assembly includes a mixing sleeve 6 that is rotatably fitted on the top of the inner side of the steel fiber bucket 2. A mixing shaft 7 is rotatably fitted inside the mixing sleeve 6 in the opposite direction. The mixing shaft 7 rotates in the opposite direction to the mixing sleeve 6. A steel fiber sieve mixing plate 8 is fixedly connected to the outer ring surface of the mixing sleeve 6. The steel fiber sieve mixing plate 8 is in the shape of a thin sheet. A mixing blade 9 is fixedly fitted on the outer ring surface of the mixing shaft 7. A mixing rod 10 is arranged in a circular array on the outer circumference of the mixing blade 9. The mixing rod 10 is fixedly connected to the mixing shaft 7 through a connecting plate 11.

[0022] By pouring steel fibers into the steel fiber bucket 2 and adding concrete into the concrete bucket 5, and then controlling the rotation of the mixing sleeve 6, the mixing sleeve 6 drives the steel fiber mixing blades 8 fixedly installed at the bottom to mix within the steel fiber bucket 2. Simultaneously, the mixing shaft 7 is controlled to rotate in the opposite direction to the mixing sleeve 6, causing the mixing shaft 7 to drive the mixing blades 9 and the mixing rod 10 to mix the concrete. The steel fibers fall evenly into the concrete bucket 5 through the screen plate 4. The rotation of the mixing blades 9 and the mixing rod 10 thoroughly mixes the steel fibers and concrete. Furthermore, controlling the rotation of the concrete bucket 5 further enhances the uniformity of the mixture, preventing the steel fibers from clumping. This achieves automatic and uniform addition of steel fibers, eliminating the hassle of manual feeding, reducing labor intensity and manpower, improving the quality of steel fiber addition, and increasing production efficiency.

[0023] Example 2: Based on Example 1, a feeding bucket 12 is fixedly fitted onto one side of the upper surface of the steel fiber bucket 2 to facilitate the addition of steel fiber material. A cover plate 13 is slidably inserted into the top of the feeding bucket 12 to prevent steel fibers from flying out during the stirring process. A U-shaped frame 14 is fixedly connected to the middle of the upper surface of the steel fiber bucket 2. A stirring motor 15 is installed on one side of the U-shaped frame 14. The stirring motor 15 is electrically connected to an external control device. The stirring motor 15 is fixedly installed on the upper surface of the steel fiber bucket 2. The output end of the stirring motor 15 is rotatably fitted onto one side of the U-shaped frame 14, and the output end of the stirring motor 15 is fixed. A drive gear 16 is fixedly mounted on the stirring sleeve 6. The drive gear 16 is driven to rotate by the stirring motor 15. An upper gear 17 meshes with the upper side of the drive gear 16, and a lower gear 18 meshes with the lower side of the drive gear 16. The drive gear 16 is engaged with both the upper gear 17 and the lower gear 18. The upper gear 17 is fixedly mounted on the top of the stirring shaft 7, and the lower gear 18 is fixedly mounted on the top of the stirring sleeve 6. The tops of both the stirring shaft 7 and the stirring sleeve 6 are rotatably mounted within the U-shaped frame 14. The U-shaped frame 14 limits the movement of the stirring shaft 7 and the stirring sleeve 6. The stirring shaft 7 passes through the screen plate 4 and is rotatably mounted within the screen plate 4. The screen plate 4 further limits the movement of the stirring shaft 7, thereby improving its stability during rotation.

[0024] By adding steel fiber material from the feeding bucket 12 into the steel fiber bucket 2, and then inserting the cover plate 13 onto the feeding bucket 12 to seal the feeding bucket 12, the steel fiber is prevented from flying out during the mixing process. Then, by starting the mixing motor 15, the mixing motor 15 drives the drive gear 16 to rotate. The drive gear 16 then meshes with the upper gear 17 and the lower gear 18. The rotation of the lower gear 18 drives the mixing sleeve 6 to rotate, which in turn drives the steel fiber mixing plate 8 to mix the steel fiber, so that the steel fiber falls evenly into the concrete bucket 5 through the screen plate 4.

[0025] Example 3: Based on Example 2, a limiting ring 19 is fixedly connected to the top of the concrete bucket 5. The limiting ring 19 is rotatably sleeved on the bottom of the steel fiber bucket 2. Through the rotatable connection between the limiting ring 19 and the steel fiber bucket 2, the rotation of the concrete bucket 5 is made more stable. A rotating ring 20 is fixedly sleeved on the bottom of the concrete bucket 5. A ball bearing 21 is movably engaged on the lower surface of the rotating ring 20. The ball bearing 21 can roll inside the lower side of the rotating ring 20. A sealing cap 23 is threadedly connected to the lower surface of the concrete bucket 5. The threaded sealing cap 23 facilitates the removal of the sealing cap 23 from the bottom of the concrete bucket 5. The ball bearing 21 is slidably connected to the annular groove 22 on the upper surface of the base frame 3. The annular groove 22 limits the ball bearing 21. The top outer ring surface of the concrete bucket 5 is fixedly fitted with a feeding pipe 24 to facilitate the addition of concrete materials. A toothed ring 25 is provided on the lower side of the feeding pipe 24. A large gear 26 meshes with one side of the toothed ring 25. The large gear 26 meshes with the toothed ring 25 for transmission. The toothed ring 25 is fixedly fitted in the middle of the outer ring surface of the steel fiber bucket 2. The large gear 26 is fixedly fitted in the output end of the rotary motor 27. The bottom of the rotary motor 27 is fixedly connected to the base frame 3. The rotary motor 27 is electrically connected to the external control equipment.

[0026] Before mixing begins, concrete materials are added to the concrete bucket 5 through the feeding pipe 24. During mixing, the mixing motor 15 and the rotary motor 27 are started. Driven by the lower mixing motor 15, the upper gear 17 drives the mixing shaft 7. Since the upper gear 17 and the lower gear 18 are arranged symmetrically, the mixing sleeve 6 and the mixing shaft 7 rotate in opposite directions. The mixing shaft 7 rotates stably under the constraint of the U-shaped frame 14 and the screen plate 4, thereby driving the mixing blades 9 and the mixing rod 10 installed at its bottom to fully mix the mixture in the concrete bucket 5. The large gear 26 is driven to rotate by the rotary motor 27, which meshes with the gear ring 25. The gear ring 25 then drives the concrete bucket 5 to rotate. The top of the concrete bucket 5 is rotatably connected to the bottom of the steel fiber bucket 2 through the limiting ring 19. The bottom of the concrete bucket 5 slides between the ball bearing 21 movably installed on the rotating ring 20 and the ring groove 22, thereby improving the stability of the concrete bucket 5 during rotation. Furthermore, through the rotation of the concrete bucket 5, the steel fiber and concrete are further thoroughly mixed. After thorough mixing, the mixture can be removed by disassembling the sealing cap 23.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel fiber feeding and mixing device, comprising a top frame (1), characterized in that: The top of the top frame (1) is welded and fixed to the top of the steel fiber barrel (2), the bottom of the top frame (1) is welded and fixed to the bottom frame (3), a screen plate (4) is fixedly installed at the bottom of the steel fiber barrel (2), a concrete barrel (5) is rotatably installed on the upper side of the bottom frame (3), and the top of the concrete barrel (5) is rotatably fitted onto the bottom of the steel fiber barrel (2). A mixing assembly is provided between the steel fiber bucket (2) and the concrete bucket (5). The mixing assembly includes a mixing sleeve (6) that is rotatably fitted on the top of the inner side of the steel fiber bucket (2). A mixing shaft (7) is rotatably fitted inside the mixing sleeve (6). A steel fiber mixing plate (8) is fixedly connected to the outer ring surface of the mixing sleeve (6). A mixing blade (9) is fixedly fitted to the outer ring surface of the mixing shaft (7). A mixing rod (10) is arranged in a circular array on the outer side of the mixing blade (9). The mixing rod (10) is fixedly connected to the mixing shaft (7) through a connecting plate (11).

2. The steel fiber feeding and mixing device according to claim 1, characterized in that: A feeding bucket (12) is fixedly fitted on one side of the upper surface of the steel fiber bucket (2), and a cover plate (13) is slidably inserted into the top of the feeding bucket (12). A U-shaped frame (14) is fixedly connected to the middle of the upper surface of the steel fiber bucket (2).

3. The steel fiber feeding and mixing device according to claim 2, characterized in that: A stirring motor (15) is provided on one side of the U-shaped frame (14). The stirring motor (15) is fixedly installed on the upper surface of the steel fiber barrel (2). The output end of the stirring motor (15) is rotatably sleeved on one side of the U-shaped frame (14), and a drive gear (16) is fixedly sleeved on the output end of the stirring motor (15).

4. The steel fiber feeding and mixing device according to claim 3, characterized in that: The drive gear (16) is meshed with an upper gear (17) on its upper side and a lower gear (18) on its lower side. The upper gear (17) is fixedly sleeved on the top of the stirring shaft (7) and the lower gear (18) is fixedly sleeved on the top of the stirring sleeve (6). The tops of the stirring shaft (7) and the stirring sleeve (6) are both rotatably sleeved in the U-shaped frame (14).

5. The steel fiber feeding and mixing device according to claim 1, characterized in that: The top of the concrete bucket (5) is fixedly connected to a limiting ring (19), which is rotatably sleeved on the bottom of the steel fiber bucket (2). A rotating ring (20) is fixedly sleeved on the bottom of the concrete bucket (5), and a ball bearing (21) is movably engaged on the lower surface of the rotating ring (20). A sealing cap (23) is threadedly connected to the lower surface of the concrete bucket (5).

6. The steel fiber feeding and mixing device according to claim 5, characterized in that: The ball (21) is slidably connected to the annular groove (22) on the upper surface of the base frame (3). The top outer ring of the concrete bucket (5) is fixedly fitted with a feeding pipe (24). A toothed ring (25) is provided on the lower side of the feeding pipe (24). A large gear (26) is meshed on one side of the toothed ring (25).

7. The steel fiber feeding and mixing device according to claim 6, characterized in that: The gear ring (25) is fixedly sleeved on the middle of the outer ring surface of the steel fiber barrel (2), the large gear (26) is fixedly sleeved on the output end of the rotary motor (27), and the bottom of the rotary motor (27) is fixedly connected to the base frame (3).

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