Concrete aggregate conveying mechanism

Abstract

The utility model relates to a concrete aggregate conveying mechanism, including frame, be provided with the transmission belt of inclination on the frame, the top of transmission belt lower extreme is provided with the fairing of vertical or inclination, the upper end of fairing is provided with the feed port, and the lower extreme is provided with the discharge gate, and the inside of fairing is provided with the flow guide chamber, and the section of flow guide chamber is rectangular, and the width direction of flow guide chamber is parallel to the width direction of transmission belt, and the thickness of flow guide chamber decreases from top to bottom, the inside of flow guide chamber is provided with multiple material distribution columns. Aggregate reaches material distribution column, will move downward from the both sides of material distribution column, promote aggregate more dispersed, because the thickness of flow guide chamber gradually reduces, aggregate will gradually disperse from the middle to the both sides of flow guide chamber, and the thickness distribution of aggregate is more uniform, finally, after being discharged from the discharge gate of the lower extreme of flow guide chamber and falling on the transmission belt, can be more evenly distributed to the middle and edge position of transmission belt, make the load that transmission belt middle and edge position bears more uniform.

Description

Technical Field

[0001] This utility model belongs to the field of conveying equipment, and in particular to a concrete aggregate conveying mechanism. Background Technology

[0002] Concrete raw materials include aggregates, powders, and water. Aggregates are raw materials with larger particle sizes, such as sand, gravel, and slag. Aggregates are usually stored in storage silos, and during concrete preparation, the aggregates in the storage silos are transferred to the concrete mixing plant via a conveying mechanism.

[0003] The commonly used aggregate conveying mechanism is the conveyor belt. The discharge port at the bottom of the storage bin is usually aligned with the middle part of the conveyor belt. After the aggregate falls onto the conveyor belt, the thickness of the aggregate in the middle part of the conveyor belt is greater than that at the edge of the conveyor belt. This results in uneven load distribution between the middle and the edge of the conveyor belt, making the conveyor belt prone to deformation and affecting its service life. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a concrete aggregate conveying mechanism that can distribute aggregate more evenly in the middle and edges of the conveyor belt.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a concrete aggregate conveying mechanism, including a frame, on which an inclined conveyor belt is installed.

[0006] A vertical or inclined guide shroud is provided above the lower end of the conveyor belt. The upper end of the guide shroud is provided with a feed inlet and the lower end is provided with a discharge outlet. A guide cavity is provided inside the guide shroud. The cross-section of the guide cavity is rectangular. The width direction of the guide cavity is parallel to the width direction of the conveyor belt. The thickness of the guide cavity decreases from top to bottom. Multiple material distribution columns are provided inside the guide cavity. The length direction of the material distribution columns is consistent with the thickness direction of the guide cavity.

[0007] Furthermore, the flow guide is slidably fitted with the frame, and the flow guide is connected to a drive mechanism that drives the flow guide to reciprocate linear motion, with the direction of motion of the flow guide perpendicular to the length direction of the conveyor belt.

[0008] Furthermore, the drive mechanism is a crank-slider mechanism driven by an electric motor.

[0009] Furthermore, baffles are fixedly installed on the frame on both sides of the conveyor belt, and the edge of the conveyor belt is fitted with the baffles with a clearance. The lower end of the guide shroud is located between the baffles.

[0010] Furthermore, the material distribution column includes one upper powder column and two lower powder columns, with the lower powder columns located below the upper powder column and the two lower powder columns located on both sides of the upper powder column.

[0011] Furthermore, multiple limiting plates perpendicular to the conveyor belt are provided on the conveyor surface of the conveyor belt.

[0012] The beneficial effects of this utility model are as follows: the aggregate discharged from the storage bin first enters the guide cavity through the feed inlet. When the aggregate reaches the distribution column, it moves downward from both sides of the distribution column, which promotes the aggregate to be more dispersed. As the thickness of the guide cavity gradually decreases, the aggregate will gradually disperse from the middle to both sides of the guide cavity as it moves downward along the guide cavity. The thickness distribution of the aggregate is more uniform. Finally, after being discharged from the discharge port at the lower end of the guide cavity and falling onto the conveyor belt, it can be more evenly distributed to the middle and edge positions of the conveyor belt, so that the load borne by the middle and edge positions of the conveyor belt is more uniform, thus extending the service life of the conveyor belt. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention;

[0014] Figure 2 yes Figure 1 Schematic diagram of the cross section of AA;

[0015] Reference numerals: 1—Frame; 2—Conveyor belt; 3—Guide shroud; 4—Inlet; 5—Outlet; 6—Guide cavity; 7—Distribution column; 8—Drive mechanism; 9—Baffle plate; 10—Limit plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] The concrete aggregate conveying mechanism of this utility model, such as Figure 1 and Figure 2 As shown, the device includes a frame 1, on which an inclined conveyor belt 2 is mounted. Above the lower end of the conveyor belt 2, a vertical or inclined guide shroud 3 is mounted. The upper end of the guide shroud 3 has a feed inlet 4, and the lower end has a discharge outlet 5. Inside the guide shroud 3, a guide cavity 6 is provided. The cross-section of the guide cavity 6 is rectangular. The width direction of the guide cavity 6 is parallel to the width direction of the conveyor belt 2, and the thickness of the guide cavity 6 decreases from top to bottom. Inside the guide cavity 6, multiple material distribution columns 7 are provided. The length direction of the material distribution columns 7 is consistent with the thickness direction of the guide cavity 6.

[0018] The lower end of conveyor belt 2 is the feed end, and the upper end is the discharge end. Conveyor belt 2 tilts and conveys the aggregate upwards to the concrete mixing mechanism. The guide hood 3 is a wear-resistant metal cover with a rectangular annular cross-section. Both ends of the guide hood 3 are open; the upper end serves as the feed inlet 4, and the lower end as the discharge outlet 5. The inner cavity of the guide hood 3 is the guide cavity 6. The feed inlet 4 is connected to the discharge outlet at the lower end of the aggregate storage bin, allowing the aggregate discharged from the aggregate storage bin to enter the guide cavity 6. The length direction of the guide hood 3 is vertical, as shown in the reference section. Figure 1In the direction 'a', the thickness direction of the fairing 3 is referenced. Figure 1 In the direction b, the thickness direction is consistent with the length direction of the conveyor belt 2, and the width direction of the guide shroud 3 is referenced. Figure 2 The direction is c. The width of the guide shroud 3 is smaller than the width of the conveyor belt 2 to prevent aggregate from falling outside the conveyor belt 2.

[0019] Because the thickness of the guide cavity 6 decreases from top to bottom, as the aggregate moves downward along the guide cavity 6, it is blocked by the inner wall of the guide cavity 6 and gradually moves from the middle of the guide cavity 6 to both sides of the guide cavity 6. This makes the aggregate more evenly distributed in the width direction of the guide shroud 3. After the aggregate is discharged from the outlet 5, it can be more evenly distributed on the conveyor belt 2, which reduces the load difference between the middle and edge positions of the conveyor belt 2, improves the stability of the conveyor belt 2 operation, slows down the deformation of the conveyor belt 2, and increases its service life.

[0020] In addition, multiple material distribution columns 7 are set inside the flow guide cavity 6. When the aggregate reaches the material distribution column 7, it is blocked by the material distribution column 7. At this time, the material will be divided into two parts at the material distribution column 7. The two parts of aggregate fall down from the two sides of the material distribution column 7 respectively, making the aggregate more dispersed and further improving the uniformity of the aggregate distribution in the width direction of the flow guide shroud 3.

[0021] There is friction between the aggregate and the inner wall of the guide shroud 3, and as the thickness of the guide cavity 6 decreases from top to bottom, the aggregate encounters resistance, which may cause the aggregate to get stuck in the guide cavity 6 and be unable to move downward normally. To avoid the aggregate getting stuck in the guide cavity 6, the guide shroud 3 of this invention is slidably engaged with the frame 1, with the sliding direction consistent with the width direction of the guide shroud 3. The guide shroud 3 is connected to a drive mechanism 8 that drives the guide shroud 3 to reciprocate linearly. The direction of movement of the guide shroud 3 is perpendicular to the length direction of the conveyor belt 2 and parallel to the width direction of the conveyor belt 2.

[0022] After the aggregate enters the guide shroud 3, the drive mechanism 8 drives the guide shroud 3 to reciprocate linearly along its width. The guide shroud 3 has a short travel distance, meaning it vibrates in a small amplitude linear motion. This vibration of the guide shroud 3 can cause the aggregate inside to vibrate, preventing the aggregate from getting stuck. In addition, when the guide shroud 3 vibrates, it can promote the faster and more even distribution of the aggregate inside the guide cavity 6, further improving the uniformity of the aggregate thickness.

[0023] In this invention, the drive mechanism 8 is a motor-driven crank-slider mechanism. The motor can be fixedly mounted on the frame 1. The motor's main shaft is connected to the crank, and a connecting rod is hinged to the end of the crank. The end of the connecting rod is hinged to the guide shield 3. When the motor runs, it drives the crank to rotate, and the crank can drive the guide shield 3 to move linearly through the connecting rod.

[0024] To prevent aggregate from falling off the edges of conveyor belt 2, baffle plates 9 are fixedly installed on the frame 1 on both sides of conveyor belt 2. The edges of conveyor belt 2 are fitted with baffle plates 9 with a clearance smaller than the particle size of the aggregate, thus preventing aggregate from falling off. The lower end of the guide shroud 3 is located between the baffle plates 9 to prevent aggregate discharged from the guide shroud 3 from falling outside the conveyor belt 2.

[0025] The material distribution column 7 can be multi-layered, with multiple columns in each layer. In a preferred embodiment, the material distribution column 7 includes one upper powder column and two lower powder columns. The lower powder columns are located below the upper powder columns, and the two lower powder columns are located on both sides of the upper powder columns.

[0026] Multiple limiting plates 10 perpendicular to the conveyor belt 2 are provided on the conveyor surface.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A concrete aggregate conveying mechanism, comprising a frame (1) and an inclined conveyor belt (2) mounted on the frame (1), characterized in that: A vertical or inclined guide shroud (3) is provided above the lower end of the conveyor belt (2). The upper end of the guide shroud (3) is provided with a feed inlet (4) and the lower end is provided with a discharge outlet (5). A guide cavity (6) is provided inside the guide shroud (3). The cross-section of the guide cavity (6) is rectangular. The width direction of the guide cavity (6) is parallel to the width direction of the conveyor belt (2). The thickness of the guide cavity (6) decreases from top to bottom. Multiple material distribution columns (7) are provided inside the guide cavity (6). The length direction of the material distribution columns (7) is consistent with the thickness direction of the guide cavity (6).

2. The concrete aggregate conveying mechanism as described in claim 1, characterized in that: The flow guide (3) is slidably fitted with the frame (1), and the flow guide (3) is connected to a drive mechanism (8) that drives the flow guide (3) to reciprocate linearly. The direction of movement of the flow guide (3) is perpendicular to the length direction of the conveyor belt (2).

3. The concrete aggregate conveying mechanism as described in claim 2, characterized in that: The drive mechanism (8) is a crank-slider mechanism driven by a motor.

4. The concrete aggregate conveying mechanism as described in claim 1, characterized in that: Baffles (9) are fixedly installed on the frame (1) on both sides of the conveyor belt (2). The edge of the conveyor belt (2) is fitted with the baffles (9) with a clearance. The lower end of the guide shroud (3) is located between the baffles (9).

5. The concrete aggregate conveying mechanism as described in claim 1, characterized in that: The material distribution column (7) includes one upper powder column and two lower powder columns. The lower powder columns are located below the upper powder columns, and the two lower powder columns are located on both sides of the upper powder columns.

6. The concrete aggregate conveying mechanism as described in claim 1, characterized in that: The conveyor belt (2) has multiple limiting plates (10) perpendicular to the conveyor belt (2) on its conveyor surface.

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