An anti-overflow material conveying mechanism with a material scraping plate

Abstract

This utility model relates to the field of scraper conveying technology, specifically to an anti-overflow scraper material conveying mechanism. It includes a support frame, with side plates fixedly connected to both sides of the upper end of the support frame. Several transmission wheels are rotatably connected to the ends of two side plates that are close to each other. Several conveyor belts are driven by the arc surfaces of the transmission wheels. A scraper body is fixedly connected to the surface of each conveyor belt. A drive motor is fixedly connected to the surface of one of the side plates, and the output end of the drive motor is fixedly connected to the surface of one of the transmission wheels. A pull-out device is mounted on the upper end of each conveyor belt via the side plates. The pull-out device includes a mounting frame, and the lower ends of the mounting frame are fixedly connected to one side of each of the two side plates. This utility model, through the design of the pull-out device and the height limiting device, solves the problem of material easily piling up and overflowing during scraper conveying, and the inability to promptly clean and discharge excess material.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveying technology, and in particular to a scraper material conveying mechanism for preventing material overflow. Background Technology

[0002] In the field of bulk material conveying, scraper conveyors are a common type of enclosed continuous conveying equipment, typically used in industries such as mining, chemical, grain processing, and building materials for horizontal or inclined conveying of powdery, granular, and small lump materials. This equipment relies on scrapers to push materials along the conveying direction within a closed casing. It boasts advantages such as simple structure, good sealing, large conveying capacity, and low energy consumption, meeting the material handling needs under various working conditions and making it an indispensable and important conveying device in industrial production.

[0003] Existing technologies, such as the utility model patent with publication number CN203935867U, disclose a scraper conveying and crushing combined equipment. This combined equipment includes scraper conveying and crushing units, each of which comprises: a frame; a crushing mechanism comprising multiple sets of parallel roller units; each set of roller units includes a fixed roller and a movable roller; the end of the fixed roller is fixed to the frame; the end of the movable roller is fixed to the frame; and a scraper conveying mechanism is disposed below the roller units. The scraper conveying mechanism includes a conveying chain, scrapers spaced apart on the conveying chain, and scraper grooves disposed directly below the conveying chain; the transmission direction of the conveying chain is perpendicular to the axial direction of the fixed rollers. This utility model combines crushing and conveying equipment, improving equipment efficiency, having a reasonable structure, and saving space.

[0004] During the scraper conveying process, it is necessary to control the height of the material on the conveyor belt to prevent overflow and blockage. However, since general scraper conveying mechanisms only rely on scrapers to push the material forward, they lack the function of actively controlling the material accumulation height and timely cleaning of overflowing material. This makes it inconvenient to adjust the passing height in real time according to changes in the amount of material during the conveying process and automatically discharge excess material. As a result, the material accumulates unevenly on the conveyor belt, overflows over the side plates, causing waste and environmental pollution, and even blocks the conveying channel, affecting the normal operation of the equipment. Utility Model Content

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the tendency of materials to pile up and overflow during scraper conveying, and the inability to promptly clean up and discharge excess materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-overflow scraper material conveying mechanism, comprising a support frame, side plates fixedly connected to both sides of the upper end of the support frame, a plurality of transmission wheels rotatably connected to the ends of the two side plates that are close to each other, a plurality of conveyor belts being driven by the arc surfaces of the plurality of transmission wheels, a scraper body fixedly connected to the surface of the plurality of conveyor belts, a drive motor fixedly connected to the surface of one of the side plates, the output end of the drive motor being fixedly connected to the surface of one of the transmission wheels, a push-out device mounted on the upper end of the plurality of conveyor belts via the side plates, the push-out device comprising a mounting frame, the lower ends of the mounting frame being fixedly connected to one side of the two side plates respectively, a stepper motor fixedly connected to one side of the mounting frame, a rotating rod rotatably connected to the inner wall of the mounting frame, one end of the rotating rod being fixedly connected to the output end of the stepper motor, a plurality of push plates fixedly connected to the surface of the rotating rod, and a push-out port opened on one side of one of the side plates.

[0007] The above components achieve the following effects: the drive motor drives the transmission wheel to rotate, causing the conveyor belt to run; the scraper body scrapes the material forward; at the same time, the stepper motor drives the rotating rod to rotate, and the material-pushing plate pushes the material to the discharge outlet to avoid material accumulation and overflow from the side plate, thereby achieving the purpose of preventing overflow and improving conveying efficiency.

[0008] Preferably, a plurality of crushing nails are fixedly connected to the surface of each of the plurality of material feeding plates, and one end of each crushing nail is conical.

[0009] The effect achieved by the above components is to break up the material by using the sharp cone-shaped crushing nails on the feeding plate, breaking up clumps or large particles, avoiding blockage of the feeding outlet, and improving feeding smoothness.

[0010] Preferably, a rotating shaft is rotatably connected to one side of the mounting bracket at the position corresponding to the dial outlet, and a closing plate is fixedly connected to the lower end of the rotating shaft, the closing plate being adapted to the size of the dial outlet.

[0011] The effect achieved by the above components is as follows: the closing plate is rotated by the rotating shaft, and the opening and closing degree is controlled by the cooperation between the closing plate and the outlet, so as to adjust the amount of material discharged and prevent material leakage when not in operation.

[0012] Preferably, a coil spring is sleeved on one end of the rotating shaft, and the two ends of the coil spring are fixedly connected to the surface of the mounting bracket and one end of the closing plate, respectively.

[0013] The effect achieved by the above components is as follows: the mounting bracket and the closing plate are connected by a coil spring, and the elastic restoring force of the coil spring is used to make the closing plate automatically close after the material feeding is completed, so as to prevent the material from continuously overflowing and achieve automatic sealing of the feeding port.

[0014] Preferably, the upper ends of the two side plates are equipped with the same height limiting device, which includes two sliding rails. The lower ends of the two sliding rails are fixedly connected to the upper ends of the two side plates, and the inner walls of the two sliding rails are provided with grooves. Two guide rods are slidably connected to the adjacent ends of the two sliding rails. The two ends of the two guide rods are slidably connected to the inner walls of the two grooves, and a sliding plate is fixedly connected to one end of the two guide rods. A gear is rotatably connected to the inner wall of the sliding plate. A rack is fixedly connected to one side of the sliding rail, and the tooth surface of the rack meshes with the tooth surface of the gear. A servo motor is fixedly connected to the surface of the sliding plate, and the output end of the servo motor is fixedly connected to the gear. A stop is rotatably connected to one side of the gear.

[0015] The effect achieved by the above components is as follows: the servo motor drives the gear to rotate, and the rack and pinion transmission causes the sliding plate to move the guide rod up and down along the chute. The stop block scrapes down the material that is too high in the scraper body on the upper surface of the conveyor belt, preventing the material from overflowing the side plate and ensuring uniform material conveying.

[0016] Preferably, the stop block is a high-density alloy block, and the cross-section of the stop block is teardrop-shaped.

[0017] The effect achieved by the above components is as follows: by using teardrop-shaped blocks made of high-density alloy material, the wear resistance and impact resistance are enhanced, while the teardrop-shaped cross-section can reduce the resistance of material movement and extend the service life of the blocks.

[0018] Preferably, a plurality of guide plates are fixedly connected to the surface of the stop block, and the plurality of guide plates are distributed in an inclined manner on the surface of the stop block.

[0019] The effect achieved by the above components is to guide the flow direction of materials by means of angled guide plates, prevent materials from accumulating and blocking at the blocks, and improve the smoothness of material passage.

[0020] In summary, the beneficial effects of this utility model are as follows: In this invention, a feeding device is installed, a drive motor drives a transmission wheel to run the conveyor belt, a scraper body scrapes the material forward, a stepper motor drives a rotating rod to rotate the feeding plate, and feeds the material to the feeding outlet to avoid accumulation and overflow. At the same time, the pointed cone-shaped crushing nails on the feeding plate break up the lumpy material to prevent blockage. The rotating shaft drives a closing plate to control the opening and closing of the feeding outlet. With the elastic restoring force of the coil spring, the closing plate automatically closes after feeding is completed, realizing feeding on demand and automatic sealing, thereby ensuring smooth and efficient conveying.

[0021] In this invention, by setting a height limiting device, a servo motor drives a gear and rack to move a sliding plate up and down along a chute, so that the baffle blocks scrape down the excessively high material in the scraper body on the upper surface of the conveyor belt, preventing the material from overflowing the side plate. At the same time, the teardrop-shaped baffle blocks made of high-density alloy material have good wear resistance and low running resistance. The guide plates are arranged at an angle to guide the flow direction of the material and avoid accumulation and blockage, thereby achieving uniform and stable material conveying. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the pull-out device of this utility model; Figure 3 This is a partial schematic diagram of the pull-out device of this utility model; Figure 4 This is a schematic diagram of the height limiting device of this utility model.

[0023] Legend: 1. Support frame; 2. Side plate; 3. Drive motor; 4. Conveyor belt; 5. Scraper body; 6. Dispensing device; 61. Mounting frame; 62. Stepper motor; 63. Rotating rod; 64. Dispensing plate; 65. Crushing nail; 66. Dispensing outlet; 67. Rotating shaft; 68. Closing plate; 69. Coil spring; 7. Height limiting device; 71. Sliding rail; 72. Slide groove; 73. Sliding plate; 74. Guide rod; 75. Rack; 76. Gear; 77. Servo motor; 78. Stop block; 79. Guide plate; 8. Transmission wheel. Detailed Implementation

[0024] Reference Figure 1 As shown, this utility model provides a technical solution: an anti-overflow scraper material conveying mechanism, including a support frame 1, with side plates 2 fixedly connected to both sides of the upper end of the support frame 1, and a plurality of transmission wheels 8 rotatably connected to the ends of the two side plates 2 that are close to each other, with a plurality of conveyor belts 4 connected to the arc surfaces of the plurality of transmission wheels 8, and a scraper body 5 fixedly connected to the surface of the plurality of conveyor belts 4, with a drive motor 3 fixedly connected to the surface of one of the side plates 2, and the output end of the drive motor 3 fixedly connected to the surface of one of the transmission wheels 8, with a pull-out device 6 installed on the upper end of the plurality of conveyor belts 4 via the side plates 2, and the same height limiting device 7 installed on the upper end of the two side plates 2.

[0025] The following section will explain the specific settings and functions of the dispensing device 6 and the height limiting device 7.

[0026] Reference Figure 2 and Figure 3As shown in this embodiment: the dispensing device 6 includes a mounting frame 61. The lower ends of the mounting frame 61 are fixedly connected to one side of two side plates 2 respectively. A stepper motor 62 is fixedly connected to one side of the mounting frame 61. A rotating rod 63 is rotatably connected to the inner wall of the mounting frame 61. One end of the rotating rod 63 is fixedly connected to the output end of the stepper motor 62. Several material dispensing plates 64 are fixedly connected to the surface of the rotating rod 63. One side of one of the side plates 2 has a dispensing outlet 66. The drive motor 3 drives the transmission wheel 8 to rotate, causing the conveyor belt 4 to run. The scraper body 5 scrapes the material forward. At the same time, the stepper motor 62 drives the rotating rod 63 to rotate, and the material dispensing plate 64 dispenses the material to the dispensing outlet 66 for discharge, avoiding the accumulation of material overflowing the side plate 2, and achieving the purpose of preventing overflow and improving conveying efficiency. Several feeding plates 64 are each fixedly connected to several crushing nails 65. One end of each crushing nail 65 is conical. The conical crushing nails 65 on the feeding plates 64 crush the material, breaking up clumps or large particles to prevent clogging of the feeding outlet 66 and improve feeding smoothness. A rotating shaft 67 is rotatably connected to one side of the mounting frame 61 at the position corresponding to the feeding outlet 66. A closing plate 68 is fixedly connected to the lower end of the rotating shaft 67. The closing plate 68 is adapted to the size of the feeding outlet 66. The rotating shaft 67 drives the closing plate 68 to rotate. The opening and closing degree is controlled by the cooperation between the closing plate 68 and the feeding outlet 66 to adjust the amount of material fed out, while preventing material leakage when not in operation. A coil spring 69 is sleeved on one end of the rotating shaft 67. The two ends of the coil spring 69 are fixedly connected to the surface of the mounting frame 61 and one end of the closing plate 68, respectively. The mounting frame 61 and the closing plate 68 are connected by the coil spring 69. The elastic restoring force of the coil spring 69 makes the closing plate 68 automatically close after the material feeding is completed, so as to prevent the material from continuously overflowing and realize the automatic sealing of the feeding port 66.

[0027] Reference Figure 4As shown in this embodiment: the height limiting device 7 includes two sliding rails 71, the lower ends of which are fixedly connected to the upper ends of the two side plates 2 respectively. Each sliding rail 71 has a groove 72 on its inner wall. Two guide rods 74 are slidably connected to the adjacent ends of the two sliding rails 71. The two ends of the guide rods 74 are slidably connected to the inner walls of the two grooves 72 respectively. A sliding plate 73 is fixedly connected to one end of each guide rod 74. A gear 76 is rotatably connected to the inner wall of the sliding plate 73. One side of the sliding rail 71 is fixed... A rack 75 is connected, with its teeth meshing with the teeth of a gear 76. A servo motor 77 is fixedly connected to the surface of a sliding plate 73, and its output end is fixedly connected to the gear 76. A stop 78 is rotatably connected to one side of the gear 76. The servo motor 77 drives the gear 76 to rotate, which in turn drives the sliding plate 73 to move up and down along the slide groove 72 via the rack 75. The stop 78 scrapes down any excessively high material in the scraper body 5 on the upper surface of the conveyor belt 4, preventing the material from overflowing the side plate 2 and ensuring uniform material conveying. The stop 78 is a high-density alloy block with a teardrop-shaped cross-section. The use of a high-density alloy material enhances the stop 78's wear resistance and impact resistance, while the teardrop-shaped cross-section reduces material running resistance and extends the service life of the stop 78. A number of guide plates 79 are fixedly connected to the surface of the block 78, and the guide plates 79 are distributed in an inclined manner on the surface of the block 78. The guide plates 79 arranged at an angle guide the flow direction of the material, prevent the material from accumulating and blocking at the block 78, and improve the smoothness of the material passage.

[0028] When using this anti-overflow scraper material conveying mechanism, the drive motor 3 is started first. The output end of the drive motor 3 drives the transmission wheel 8 fixed to it to rotate. The transmission wheel 8 drives the conveyor belt 4 to rotate. After the conveyor belt 4 runs, the scraper body 5 fixedly connected to its surface moves together with the conveyor belt 4, scraping the material falling on the conveyor belt 4 forward along the conveying direction. The material first passes the station where the ejector device 6 is located. At this time, the stepper motor 62 drives the rotating rod 63 to rotate in the mounting frame 61. The ejector plate 64 fixed to the surface of the rotating rod 63 rotates accordingly, pre-ejecting the material on the conveyor belt 4 to make the material more evenly distributed on the conveyor belt 4. At the same time, the pointed cone-shaped crushing nails 65 on the surface of the ejector plate 64 break up large pieces or lumps of material during the ejection process to avoid subsequent blockage. After the material is initially ejected, it continues to be conveyed forward with the conveyor belt 4 to the station where the height limiting device 7 is located. The servo motor 77 drives the gear 76 to rotate. The gear 76 meshes with the rack 75 fixed to one side of the sliding rail 71. Since the rack 75 is fixed, When gear 76 rotates, it drives sliding plate 73 to move up and down along slide groove 72. The two ends of guide rod 74 slide in slide groove 72 to ensure smooth movement. Sliding plate 73 drives stop block 78 to adjust to the required height. When conveyor belt 4 carries scraper body 5 and its material below stop block 78, stop block 78 scrapes down the material that exceeds the height of side plate 2 to prevent the material from overflowing above the top of side plate 2. At the same time, guide plates 79 on the surface of stop block 78 are arranged at a certain angle to guide the material to the middle and prevent the material from accumulating and blocking at stop block 78. The teardrop-shaped stop block 78 made of high-density alloy material maintains the scraping posture by gravity. The rotatable design provides cushioning and reduces the damage rate. Excess material scraped off by the stop block 78 falls back onto the conveyor belt 4 and accumulates under the ejector device 6. At this time, the next scraper body 5 has not yet pushed the excess material. The material accumulates under the ejector device 6. The stepper motor 62 in the ejector device 6 continues to run. The ejector plate 64 promptly pushes the excess material to one side of the side plate 2. In conjunction with the closing plate 68, the ejector outlet 66 is opened to discharge the excess material, thereby effectively preventing the scraped material from forming a secondary accumulation on the conveyor belt 4. The rotating shaft 67 drives the closing plate 68 to rotate and control the opening and closing of the ejector outlet 66. After the material is ejected, the coil spring 69 uses its elastic restoring force to automatically close the closing plate 68 to prevent material leakage when not in operation. Throughout the process, the ejector device 6 and the height limiting device 7 work together. First, the ejector device 6 pre-moves and crushes the material, and then the height limiting device 7 precisely controls the height of the material. Excess material knocked down by the height limiting device 7 is then promptly ejected and discharged by the ejector device 6, forming a complete anti-overflow cycle. Each component works in sequence to complete the material movement, crushing, height limiting, leveling, ejection, and discharge operations, effectively preventing material overflow and blockage, and achieving efficient and stable conveying operations.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A material conveying mechanism with an anti-overflow scraper, comprising a support frame (1), characterized in that: The upper ends of the support frame (1) are fixedly connected to side plates (2). Several transmission wheels (8) are rotatably connected to the ends of the two side plates (2) that are close to each other. Several conveyor belts (4) are driven by the arc surfaces of the several transmission wheels (8). Scraper bodies (5) are fixedly connected to the surfaces of the several conveyor belts (4). A drive motor (3) is fixedly connected to the surface of one of the side plates (2). The output end of the drive motor (3) is fixedly connected to the surface of one of the transmission wheels (8). The upper ends of the several conveyor belts (4) are connected by the side plates (2). A push-out device (6) is installed, the push-out device (6) includes a mounting frame (61), the lower ends of the mounting frame (61) are fixedly connected to one side of two side plates (2) respectively, a stepper motor (62) is fixedly connected to one side of the mounting frame (61), a rotating rod (63) is rotatably connected to the inner wall of the mounting frame (61), one end of the rotating rod (63) is fixedly connected to the output end of the stepper motor (62), and a number of push plates (64) are fixedly connected to the surface of the rotating rod (63), one of which has a push-out port (66) on one side of the side plate (2).

2. The anti-overflow scraper material conveying mechanism according to claim 1, characterized in that: Several crushing nails (65) are fixedly connected to the surface of several of the feeding plates (64), and one end of each crushing nail (65) is cone-shaped.

3. The anti-overflow scraper material conveying mechanism according to claim 1, characterized in that: The mounting bracket (61) is rotatably connected to a rotating shaft (67) on one side corresponding to the position of the dial outlet (66). A closing plate (68) is fixedly connected to the lower end of the rotating shaft (67). The size of the closing plate (68) is adapted to the dial outlet (66).

4. The anti-overflow scraper material conveying mechanism according to claim 3, characterized in that: One end of the rotating shaft (67) is fitted with a coil spring (69), and the two ends of the coil spring (69) are fixedly connected to the surface of the mounting bracket (61) and one end of the closing plate (68), respectively.

5. The anti-overflow scraper material conveying mechanism according to claim 1, characterized in that: The upper ends of the two side plates (2) are equipped with the same height limiting device (7). The height limiting device (7) includes two sliding rails (71). The lower ends of the two sliding rails (71) are fixedly connected to the upper ends of the two side plates (2). The inner walls of the two sliding rails (71) are provided with grooves (72). Two guide rods (74) are slidably connected to the ends of the two sliding rails (71) that are close to each other. The two ends of the two guide rods (74) are slidably connected to the inner walls of the two grooves (72). One end of the guide rod (74) is fixedly connected to a sliding plate (73), and a gear (76) is rotatably connected to the inner wall of the sliding plate (73). A rack (75) is fixedly connected to one side of the sliding rail (71), and the tooth surface of the rack (75) meshes with the tooth surface of the gear (76). A servo motor (77) is fixedly connected to the surface of the sliding plate (73), and the output end of the servo motor (77) is fixedly connected to the gear (76). A stop block (78) is rotatably connected to one side of the gear (76).

6. The anti-overflow scraper material conveying mechanism according to claim 5, characterized in that: The block (78) is a high-density alloy block, and the cross-section of the block (78) is teardrop-shaped.

7. The anti-overflow scraper material conveying mechanism according to claim 5, characterized in that: The surface of the stop block (78) is fixedly connected with a plurality of guide plates (79), and the plurality of guide plates (79) are distributed in an inclined manner on the surface of the stop block (78).

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