A concrete mixing plant for admixing fibres

Abstract

The utility model relates to the technical field of stirring device, concretely relates to a concrete mixing plant of mixing fibre, including cylinder, be equipped with the shaft in the cylinder, the lower part of the axle is connected stirring paddle, the upper side of stirring paddle is equipped with the discharging assembly and drive assembly, the discharging assembly includes the casing and conveyer belt, the right -hand end opening of casing is through and fixedly connected cylinder peripheral wall, the lower hopper is communicated on the casing upper portion outside the cylinder, the conveyer belt is rotatably equipped in the casing, and the lower part of casing is equipped with the drive plate and slides right and left, and the drive plate top end is connected the conveyer belt bottom, the drive assembly includes the bearing cylinder and screw rod, the bearing cylinder top end is connected the inside top of cylinder, the bearing cylinder is rotatably connected with screw rod, and the left end of screw rod is screwed into the casing and is connected with the drive plate, and the right end is driven to rotate counterclockwise or clockwise by the axle through the transmission part, and the cylinder right part is communicated with the downcomer. The utility model has solved the problem that the fibre material is difficult to mix evenly with the concrete in the stirring device.

Description

Technical Field

[0001] This utility model relates to the field of mixing device technology, specifically to a concrete mixing device incorporating fibers. Background Technology

[0002] Fiber incorporation into concrete is a widely used reinforcement technology that significantly improves many properties of concrete by uniformly dispersing various short fibers within the concrete matrix. Its main advantages include: significantly improved crack resistance, enhanced toughness and impact resistance, improved flexural strength, and enhanced impermeability.

[0003] The mechanism of fiber action relies on its uniform distribution and effective overlap in the matrix. Therefore, it is necessary to ensure that the fiber is evenly dispersed in the concrete; otherwise, the fiber is prone to clumping during concrete mixing, especially under improper feeding conditions. Current fiber addition methods generally involve a large amount of fiber being added to the mixing device instantly. This sudden influx of fiber from a single point easily forms initial accumulations at the point of impact. Even subsequent mixing cannot completely break up these initial accumulations, increasing the risk of clumping. Fiber clumps can become weak areas or stress concentration points within the concrete, potentially reducing local strength or leading to undesirable cracking patterns. Furthermore, clumped fibers are difficult to mix evenly with other materials in the concrete. (Authorized Publication No. CN 221089523) U's "A Fiber Concrete Batching Hopper" provides a device for conveying steel fibers using a screw conveyor to mix steel fibers with concrete. However, this device has the following problems when in use: the steel fibers or synthetic fibers used in concrete are usually long and have high toughness. During the screw conveying process, the fibers are easy to get tangled on the screw blades, forming blockages that can hinder or even completely block the flow of materials. Therefore, there is an urgent need for a device to achieve stable fiber conveying and uniform feeding. Utility Model Content

[0004] This invention addresses the problem of the difficulty in uniformly mixing fiber materials with concrete in a mixing device; it provides a concrete mixing device with added fibers, which can improve the dispersion of fibers in the mixing device, thereby improving the performance of fiber-added concrete.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A fiber-infused concrete mixing device includes a cylinder with a discharge gate at the bottom. Inside the cylinder is a rotating shaft driven by a motor. A mixing paddle is connected to the lower part of the shaft. A feeding assembly and a drive assembly are located on the upper side of the mixing paddle. The feeding assembly includes a housing and a conveyor belt. The right end of the housing has an opening that penetrates and is fixedly connected to the circumferential wall of the cylinder. A feeding hopper is connected to the upper part of the housing outside the cylinder. A conveyor belt is rotatably mounted inside the housing. A drive plate is slidably mounted on the lower part of the housing, with its upper end connected to the bottom of the conveyor belt. The drive assembly includes a bearing cylinder and a screw. The upper end of the bearing cylinder is connected to the top surface of the cylinder and is fitted around the rotating shaft. The screw is rotatably connected to the bearing cylinder. The left end of the screw extends into the housing and is threadedly connected to the drive plate. The right end of the screw is driven by the rotating shaft via a transmission component to rotate counterclockwise or clockwise. A feeding pipe is connected to the right side of the cylinder.

[0007] Furthermore, the outer bottom surface of the cylinder is provided with multiple support legs; a support plate is connected between the left end of the outer bottom surface of the shell and the outer wall of the cylinder; there is a gap between the upper end of the conveyor belt and the top plate of the shell, the front and rear ends of the conveyor belt slide in contact with the front and rear side plates of the shell respectively, and the right end of the conveyor belt is flush with the right end of the shell.

[0008] Furthermore, a baffle is fixed on the top inner surface of the casing on the left side of the hopper, and the outer ring surface of the conveyor belt slides in contact with the lower end of the baffle; a baffle is fixed on the right end of the inner bottom surface of the casing, and the outer ring surface of the conveyor belt slides in contact with the upper end of the baffle; the left end of the screw moves through the baffle; a sleeve is connected between the bearing cylinder and the baffle, and the sleeve is fitted over the screw between the bearing cylinder and the baffle.

[0009] Furthermore, the transmission component includes a bevel gear. The right end of the screw faces the rotating shaft and is connected to the bevel gear. A rotating plate 1 and a rotating plate 2 are fixedly mounted on the rotating shaft to the right of the bevel gear. Both rotating plate 1 and rotating plate 2 are frustum plates with their small ends facing each other. The left side of the peripheral wall of rotating plate 1 is provided with multiple teeth 1, and the right side of the peripheral wall of rotating plate 2 is provided with multiple teeth 2. When the side of the peripheral wall of rotating plate 1 with teeth 1 faces left, the teeth 1 on rotating plate 1 mesh with the upper part of the bevel gear. When the side of the peripheral wall of rotating plate 2 with teeth 2 faces left, the teeth 2 on rotating plate 2 mesh with the lower part of the bevel gear.

[0010] Furthermore, a guide cylinder is fixed inside the cylinder between the bearing cylinder and the stirring paddle. The guide cylinder is a hollow frustum with a larger top and a smaller bottom and open at both ends. A spreading disc is sleeved and fixed on the rotating shaft between the guide cylinder and the stirring paddle. One end of the discharge pipe is lower than the guide cylinder.

[0011] The beneficial effects of this utility model through the above technical solution are as follows:

[0012] When this invention is in use, the motor-driven shaft drives the stirring paddle to stir other materials in the cylinder besides fibers. The shaft can reciprocate to drive the conveyor belt to rotate clockwise or counterclockwise. The conveyor belt can intermittently carry the fiber material in the hopper and feed it into the cylinder. Under the action of the guide cylinder and the spreading disc, the fibers entering the cylinder are evenly spread into the lower part of the cylinder and mixed with other materials. Therefore, by intermittently feeding fibers, this invention can prevent fibers from accumulating in the cylinder, improve the dispersion of fibers, and thus improve the performance of fiber-mixed concrete. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a sectional front view of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the rotating shaft, rotating plate one, rotating plate two and screw connection of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the rotating shaft connecting the spreading disc of this utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the conveyor belt, drive plate, and screw of this utility model.

[0018] The attached diagram is labeled as follows: 1. Cylinder, 2. Discharge gate, 3. Motor, 4. Rotating shaft, 5. Agitator, 6. Shell, 7. Conveyor belt, 9. Drive plate, 10. Bearing cylinder, 11. Screw, 12. Discharge pipe, 13. Support leg, 14. Support plate, 15. Baffle one, 16. Baffle two, 17. Horizontal plate, 18. Sleeve, 19. Rotating rod, 20. Bevel gear, 21. Rotating plate one, 22. Rotating plate two, 23. Gear one, 24. Gear two, 25. Guide cylinder, 26. Spreading disc, 27. Discharge hopper. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] like Figures 1-5As shown, a fiber-infused concrete mixing device includes a cylinder 1, which is a cylindrical body with its upper opening sealed by a top plate. A discharge gate 2 is located at the bottom of the cylinder 1. Inside the cylinder 1 is a rotating shaft 4 driven by a motor 3. The motor 3 is fixed to the outer top surface of the cylinder 1. The upper end of the rotating shaft 4 movably passes through the top plate of the cylinder 1 and connects to the output end of the motor 3. The lower part of the rotating shaft 4 is connected to a mixing paddle 5. A feeding assembly and a driving assembly are located on the upper side of the mixing paddle 5. The feeding assembly includes a housing 6 and a conveyor belt 7. The housing 6 is a hollow cuboid with an opening at the right end. The right opening of the housing 6 penetrates and is fixedly connected to the periphery of the cylinder 1. The upper part of the housing 6 outside the cylinder 1 is connected to a feeding hopper 2. 7. A conveyor belt 7 is rotatably installed inside the housing 6. A drive plate 9 is slidably installed in the lower part of the housing 6. The upper end of the drive plate 9 is connected to the bottom of the conveyor belt 7. The drive plate 9 is a rectangular plate. The bottom surface of the drive plate 9 slides in contact with the inner bottom surface of the housing 6. The front and rear ends of the drive plate 9 slide in contact with the front and rear inner surfaces of the housing 6, respectively. The drive assembly includes a bearing cylinder 10 and a screw 11. The upper end of the bearing cylinder 10 is connected to the inner top surface of the cylinder 1 and is sleeved on the outside of the rotating shaft 4. The screw 11 is rotatably connected to the bearing cylinder 10. The left end of the screw 11 extends into the housing 6 and is threaded to the drive plate 9. The right end is driven by the rotating shaft 4 through the transmission component to rotate counterclockwise or clockwise. A feed pipe 12 is connected to the right side of the cylinder 1.

[0021] The outer bottom surface of the cylinder 1 is provided with multiple support legs 13; a support plate 14 is connected between the left end of the outer bottom surface of the shell 6 and the outer wall of the cylinder 1; rotating rods 19 are rotatably connected between the left and right ends of the front and rear side plates of the shell 6, and the conveyor belt 7 is sleeved on the two rotating rods 19. There is a gap between the upper end of the conveyor belt 7 and the top plate of the shell 6. The front and rear ends of the conveyor belt slide in contact with the front and rear side plates of the shell, respectively, and the right end of the conveyor belt is flush with the right end of the shell.

[0022] A baffle 15 is fixed on the top inner surface of the housing 6 on the left side of the hopper 27. The outer ring surface of the conveyor belt 7 slides in contact with the lower end of the baffle 15. A horizontal plate 17 is provided inside the conveyor belt 7. The front and rear ends of the horizontal plate 17 are fixedly connected to the front and rear side plates of the housing 6, respectively. The inner ring surface of the conveyor belt 7 slides in contact with the horizontal plate 17. A baffle 2 16 is fixed on the right end of the inner bottom surface of the housing 6. The outer ring surface of the conveyor belt 7 slides in contact with the upper end of the baffle 2 16. The left end of the screw 11 moves through the baffle 2 16 and is rotatably connected to the left side plate of the housing 6. A sleeve 18 is connected between the bearing cylinder 10 and the baffle 2 16. The sleeve 18 is fitted over the screw 11 between the bearing cylinder 10 and the baffle 2 16. There is a gap between the screw 11 and the inner wall of the sleeve 18. The front and rear ends of the conveyor belt slide in contact with the front and rear side plates of the housing, respectively. The right end of the conveyor belt is flush with the right end of the housing.

[0023] The transmission component includes a bevel gear 20. The right end of the screw 11 faces the rotating shaft 4 and is connected to the bevel gear 20. A rotating plate 1 21 and a rotating plate 22 are fixedly mounted on the rotating shaft 4 on the right side of the bevel gear 20 from top to bottom. Both rotating plate 1 21 and rotating plate 22 are frustum plates with their small ends facing each other. Both rotating plate 1 21 and rotating plate 22 are fitted onto the rotating shaft 4 through a through hole in the middle. The left side of the peripheral wall of rotating plate 1 21 is provided with multiple teeth 1 23, and the right side of the peripheral wall of rotating plate 22 is provided with multiple teeth 24. When the side of rotating plate 1 21 with teeth 1 23 faces left, the teeth 1 23 on rotating plate 1 21 mesh with the upper part of the bevel gear 20. When the side of rotating plate 22 with teeth 24 faces left, the teeth 24 on rotating plate 22 mesh with the lower part of the bevel gear 20.

[0024] A guide cylinder 25 is fixed inside the cylinder 1 between the bearing cylinder 10 and the stirring paddle 5. The guide cylinder 25 is a hollow frustum with a larger top and a smaller bottom and open at both ends. The upper end of the guide cylinder 25 is lower than the shell 6 and is connected to the circumferential wall of the cylinder 1. A spreading disc 26 is sleeved and fixed on the rotating shaft 4 between the guide cylinder 25 and the stirring paddle 5. The discharge pipe 12 is connected to the cylinder 1 at one end, which is lower than the guide cylinder 25.

[0025] During use, discharge gate 2 is closed. All raw materials for concrete mixing, except for fibers, enter the lower part of cylinder 1 through discharge pipe 12. Fibers for concrete mixing are fed into discharge hopper 27. The fibers in discharge hopper 27 move downwards and fall onto the upper part of conveyor belt 7. Baffle 1 prevents fibers from entering the housing on the left side of the discharge hopper. Motor 3 drives shaft 4 to rotate clockwise (clockwise rotation of shaft 4 is...). Figure 2 (From a top-down view), the rotating shaft 4 stirs the raw materials in the lower part of the cylinder 1 via the stirring paddle 5. Rotating plates 21 and 22 rotate with the rotating shaft 4. When the side of rotating plate 21 with teeth 1 faces left, teeth 1 mesh with the upper part of the bevel gear 20, causing the bevel gear 20 to drive the screw 11 to rotate clockwise (the clockwise rotation of the screw 11 is...). Figure 2 (From the right-hand viewpoint in the image), the screw 11 rotates clockwise, driving the drive plate 9 to move to the left. The drive plate 9 then drives the conveyor belt 7 to rotate clockwise (the clockwise rotation of the conveyor belt 7 is...). Figure 2 From the main viewpoint), the upper part of the conveyor belt 7 drives the fibers to move to the right, until the right end of the conveyor belt 7 falls into the cylinder 1, and is guided downward by the guide cylinder 25. The fibers fall onto the spreading disc 26, which rotates with the rotating shaft 4, through the lower opening of the guide cylinder 25. The fibers are evenly spread by the spreading disc 26 into the cylinder 1 below the guide cylinder 25. When the rotating plate 21 disengages from the bevel gear 20 with the rotating shaft 4, the teeth 24 on the rotating plate 22 mesh with the lower part of the bevel gear 20. The bevel gear 20 drives the screw 11 to rotate counterclockwise (the counterclockwise rotation of the bevel gear 20 is...). Figure 2(From the right-hand view), screw 11 drives drive plate 9 to move to the right, and drive plate 9 drives conveyor belt 7 to rotate counterclockwise (the counterclockwise rotation of conveyor belt 7 is...) Figure 2 From the main viewpoint), at this time, the conveyor belt 7 will not drive the fiber into the cylinder 1; therefore, during the continuous clockwise rotation of the rotating shaft 4, the drive plate 9 can be driven to move to the left or right via the screw 11, thereby driving the conveyor belt 7 to reciprocate clockwise or counterclockwise rotation. When the conveyor belt 7 rotates clockwise, the fiber discharged from the hopper 27 can be fed into the cylinder 1 and evenly spread into the lower part of the cylinder 1 to mix with other materials in the concrete; moreover, the fiber is intermittently fed into the cylinder 1, avoiding fiber clumps and improving the uniformity of fiber mixing in the concrete;

[0026] After the material in the cylinder 1 is mixed evenly, the discharge door 2 is opened for easy unloading.

[0027] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A concrete mixing device incorporating fiber, comprising a cylinder (1), wherein a discharge gate (2) is provided at the bottom of the cylinder (1); a rotating shaft (4) driven to rotate by a motor (3) is provided inside the cylinder (1), and a mixing paddle (5) is connected to the lower part of the rotating shaft (4), characterized in that, The upper side of the stirring paddle (5) is provided with a feeding assembly and a driving assembly. The feeding assembly includes a shell (6) and a conveyor belt (7). The right end of the shell (6) is open through and fixedly connected to the periphery of the cylinder (1). The upper part of the shell (6) outside the cylinder (1) is connected to the feeding hopper (27). The conveyor belt (7) is rotatably provided inside the shell (6). The driving plate (9) is slidably provided in the lower part of the shell (6). The upper end of the driving plate (9) is connected to the bottom of the conveyor belt (7). The driving assembly includes a bearing cylinder (10) and a screw (11). The upper end of the bearing cylinder (10) is connected to the inner top surface of the cylinder (1) and is sleeved outside the rotating shaft (4). The screw (11) is rotatably connected to the bearing cylinder (10). The left end of the screw (11) extends into the shell (6) and is threadedly connected to the driving plate (9). The right end is driven by the rotating shaft (4) through the transmission component to rotate counterclockwise or clockwise. The right part of the cylinder (1) is connected to the feeding pipe (12).

2. The fiber-admixed concrete mixing equipment according to claim 1, characterized in that, The outer bottom surface of the cylinder (1) is provided with multiple legs (13); a support plate (14) is connected between the left end of the outer bottom surface of the shell (6) and the outer wall of the cylinder (1); there is a gap between the upper end of the conveyor belt (7) and the top plate of the shell (6), the front and rear ends of the conveyor belt slide in contact with the front and rear side plates of the shell respectively, and the right end of the conveyor belt is flush with the right end of the shell.

3. The fiber-admixed concrete mixing equipment according to claim 1, characterized in that, A baffle plate (15) is fixed on the top inner surface of the housing (6) on the left side of the hopper (27), and the outer ring surface of the conveyor belt (7) slides in contact with the lower end of the baffle plate (15); a baffle plate (16) is fixed on the right end of the inner bottom surface of the housing (6), and the outer ring surface of the conveyor belt (7) slides in contact with the upper end of the baffle plate (16); the left end of the screw (11) moves through the baffle plate (16); a sleeve (18) is connected between the bearing cylinder (10) and the baffle plate (16), and the sleeve (18) is sleeved on the outside of the screw (11) between the bearing cylinder (10) and the baffle plate (16).

4. A concrete mixing device incorporating fibers according to claim 1, characterized in that, The transmission component includes a bevel gear (20). The right end of the screw (11) faces the rotating shaft (4) and is connected to the bevel gear (20). A rotating plate (21) and a rotating plate (22) are fixedly mounted on the rotating shaft (4) to the right of the bevel gear (20). Both the rotating plate (21) and the rotating plate (22) are frustum plates. The small ends of the rotating plate (21) and the rotating plate (22) are opposite each other. The left side of the peripheral wall of the rotating plate (21) is provided with multiple teeth (23), and the right side of the peripheral wall of the rotating plate (22) is provided with multiple teeth (24). When the side of the peripheral wall of the rotating plate (21) with teeth (23) is facing left, the teeth (23) on the rotating plate (21) mesh with the upper part of the bevel gear (20). When the side of the peripheral wall of the rotating plate (22) with teeth (24) is facing left, the teeth (24) on the rotating plate (22) mesh with the lower part of the bevel gear (20).

5. A concrete mixing device incorporating fibers according to claim 1, characterized in that, A guide cylinder (25) is fixed inside the cylinder (1) between the bearing cylinder (10) and the stirring paddle (5). The guide cylinder (25) is a hollow frustum with a larger top and smaller bottom and open at both ends. A spreading disc (26) is sleeved and fixed on the rotating shaft (4) between the guide cylinder (25) and the stirring paddle (5). The discharge pipe (12) is connected to the cylinder (1) at one end, which is lower than the guide cylinder (25).

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