Dustless phosphogypsum conveying device

Abstract

The dust-free phosphogypsum conveying device comprises a base and a feeding seat, two groups of supporting frames are symmetrically arranged on the base, conveying rollers are arranged on the supporting frames, adjustable correction structures, multiple groups of curved-position guide structures and multiple groups of bottom rollers are arranged on the base, conveying belts are sleeved on the conveying rollers, the curved-position guide structures and the bottom rollers, a dust removal structure is arranged on the base, and one end of the dust removal structure is connected with a feeding groove arranged on the feeding seat. Through the comprehensive coverage of the conveying belt conveying area by the dust removal cover and the side sealing design of the two end half-arc plates, the dust dispersion channel is effectively blocked. The combination of the filter plate and the filter brush realizes preliminary interception of dust, the linkage of the air suction pipe and the dust suction device can quickly suck away the dust-containing airflow, the dust pollution is controlled from the source, the dust concentration in the working environment is greatly reduced, respiratory diseases caused by long-term exposure of operators to high dust environment are avoided, and personal health is protected.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a dust-free phosphogypsum conveying device. Background Technology

[0002] Phosphogypsum is a major industrial byproduct of wet-process phosphoric acid production, with approximately 4.5-5.5 tons of phosphogypsum generated for every ton of wet-process phosphoric acid produced. With the large-scale development of the phosphoric acid industry, the annual emissions of phosphogypsum have continued to increase, making its recycling a crucial issue for resource recycling and environmental governance. Currently, phosphogypsum is widely used in building material preparation, soil improvement, and roadbed filling, and material transportation is a key link connecting the production, storage, and resource utilization of phosphogypsum. Existing phosphogypsum conveying mainly relies on traditional conveying equipment, such as belt conveyors and scraper conveyors. However, belt conveyors use open or semi-open conveying structures. During the material feeding, transfer and belt operation, phosphogypsum material is affected by airflow disturbance, material collision and gravity scattering, generating a large amount of dust. In addition, it is difficult to achieve complete sealing at belt joints, idler gaps and feed / discharge ports, etc., and dust can easily escape from the gaps, causing dust pollution in the working environment. The operation of the chain and scraper of the scraper conveyor generates mechanical disturbance, causing dust to be stirred up from the surface of the material layer. Furthermore, the splicing gaps of the trough cover and the fit gaps between the scraper and the trough are all channels for dust to escape. The dust pollution problem is even more prominent when the moisture content of phosphogypsum is low. Dust leakage from traditional conveying devices not only seriously pollutes the surrounding environment but also leads to material loss of phosphogypsum and reduces conveying efficiency. At the same time, operators who are exposed to high dust environments for a long time are prone to respiratory diseases, which endanger their health. Furthermore, dust accumulation may cause equipment failure or safety hazards, thus hindering the large-scale promotion of phosphogypsum resource utilization. Solving the dust leakage defect of existing conveying equipment has become an urgent technical problem to be solved in the field of phosphogypsum conveying. Summary of the Invention The technical problem this invention aims to solve is to provide a dust-free phosphogypsum conveying device. Through a dust hood that fully covers the conveyor belt area, combined with a side-sealing design using semi-circular plates at both ends, it effectively blocks dust escape channels. The combination of filter plates and filter brushes achieves initial dust interception, while the linkage between the exhaust pipe and the dust collection device quickly removes dust-laden airflow, controlling dust pollution at its source and significantly reducing dust concentration in the working environment. This prevents operators from being exposed to high dust levels for extended periods, thus avoiding respiratory illnesses and protecting their health. The central limiting structure of the conveyor roller, the side limiting function of the curved guide structure, and the active correction function of the adjustable correction structure work together to ensure long-term stable operation of the conveyor belt, preventing material spillage caused by belt misalignment. The combined design of the wide-mouth trough and the feed trough reduces material overflow during feeding, significantly reducing phosphogypsum material loss and improving conveying efficiency.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a dust-free phosphogypsum conveying device, including a base and a feeding seat. The base is provided with two sets of support frames symmetrically arranged, and the support frames are provided with conveying rollers. The base is provided with an adjustable correction structure, multiple sets of curved guide structures and multiple sets of bottom rollers arranged accordingly. A conveyor belt is sleeved on the conveying rollers, the multiple sets of curved guide structures and the multiple sets of bottom rollers. A transmission wheel is provided on the conveying rollers. The transmission wheel is connected to a linkage wheel set on the output end of the drive motor through a transmission belt. The drive motor is fixedly connected to the base through a fixed seat. The base is provided with a dust removal structure. One end of the dust removal structure is connected to the feeding trough set on the feeding seat.

[0004] In a preferred embodiment, a wide-mouth groove is installed on the feed trough via a bolt structure.

[0005] In a preferred embodiment, the diameter of the middle position of the conveying roller is smaller than the diameter of its two ends.

[0006] In a preferred embodiment, the curved guide structure includes a mounting frame, with a bottom support roller at the middle position of the mounting frame and symmetrically arranged inclined support rollers on both sides of the mounting frame.

[0007] In a preferred embodiment, the adjustable correction structure includes an adjustment frame fixedly installed on a base. The inner wall of the adjustment frame is symmetrically provided with limiting grooves. A limiting slider is provided in the limiting groove and slides therewith. The limiting slider is threadedly engaged with an adjustment screw. One end of the adjustment screw is connected to the base through a rotating seat. The other end of the adjustment screw passes through the adjustment frame and is provided with a handle. A correction arm is provided on the limiting slider, and a correction roller that cooperates with the conveyor belt is provided on the correction arm. In a preferred embodiment, the dust removal structure includes multiple sets of support arms fixedly connected to the base. The tops of the multiple sets of support arms are fixedly connected to a dust removal hood positioned directly above the conveyor belt. One end of the dust removal hood is fitted with a feed chute, and the other end of the dust removal hood is provided with multiple sets of filter plates. Each filter plate is provided with multiple sets of filter brushes, and an exhaust pipe is provided between adjacent filter plates. One end of the exhaust pipe is located inside the dust removal hood, and the other end of the exhaust pipe is connected to a dust collection device through an air guide pipe.

[0008] In a preferred embodiment, the dust collector hood is provided with semi-circular plates at both ends that cooperate with the sides of the conveyor belt.

[0009] The dust-free phosphogypsum conveying device provided by this utility model, by adopting the above-described structure, has the following beneficial effects: (1) By fully covering the conveyor belt area with dust removal hoods, and with the side sealing design of the semi-circular plates at both ends, the dust escape channel is effectively blocked; (2) The combination of filter plate and filter brush achieves initial dust interception. The linkage between the exhaust pipe and the dust collection device can quickly extract the dust-laden airflow, control dust pollution from the source, significantly reduce the dust concentration in the working environment, avoid long-term exposure of operators to high dust environment and cause respiratory diseases, and protect personal health. (3) The middle limiting structure of the conveyor roller, the side limiting function of the curved guide structure, and the active correction function of the adjustable correction structure work together to ensure the long-term stable operation of the conveyor belt and avoid material spillage caused by the conveyor belt running off track. (4) The design of the wide-mouth trough and the feed trough reduces material overflow in the feeding process, significantly reduces phosphogypsum material loss, and improves conveying efficiency. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the conveying part of this utility model.

[0013] Figure 4 This is a schematic diagram of the conveying support structure of this utility model.

[0014] Figure 5 This is a schematic diagram of the adjustable correction structure of this utility model.

[0015] Figure 6 This is a schematic diagram of the dust removal structure of this utility model.

[0016] In the diagram: 1. Base; 2. Dust removal structure; 3. Feed seat; 4. Feed trough; 5. Wide-mouth trough; 6. Adjustable correction structure; 7. Support frame; 8. Conveyor roller; 9. Conveyor belt; 10. Drive wheel; 11. Drive belt; 12. Linkage wheel; 13. Drive motor; 14. Fixed seat; 15. Mounting frame; 16. Bottom roller; 17. Inclined roller; 18. Bottom roller; 19. Support arm; 20. Dust hood; 21. Filter plate; 22. Filter brush; 23. Exhaust pipe; 24. Air guide pipe; 25. Adjustment frame; 26. Limiting groove; 27. Limiting slider; 28. Adjusting screw; 29. ​​Rotating seat; 30. Rotary handle; 31. Correction arm; 32. Correction roller; 33. Semi-circular plate. Detailed Implementation

[0017] Example 1: like Figure 1-6 The dust-free phosphogypsum conveying device includes a base 1 and a feed seat 3. The base 1 serves as an integral support foundation, supporting the various functional components of the device. The feed seat 3 is fixedly installed at the feed end of the base 1, providing stable support for the feeding process. Two sets of support frames 7 are symmetrically arranged on the base 1, vertically positioned on both sides of the base 1, for fixing and supporting conveying rollers 8. Conveying rollers 8 are mounted on the support frames 7 and are rotatably mounted on the top of the support frames 7. The base 1 also features symmetrically arranged adjustable correction structures 6, multiple sets of curved guide structures, and multiple sets of bottom rollers 18. These curved guide structures and bottom rollers 18 are evenly distributed along the length of the base 1. A conveyor belt 9 is fitted on the upper part of each roller body, forming a closed conveying loop. A transmission wheel 10 is provided on the conveyor roller 8, and the transmission wheel 10 is coaxially and fixedly connected to the conveyor roller 8. The transmission wheel 10 is connected to the linkage wheel 12 set on the output end of the drive motor 13 through the transmission belt 11. The drive motor 13 is fixedly connected to the base 1 through the fixed seat 14. The fixed seat 14 provides a stable installation reference for the drive motor 13 to ensure no shaking during operation. A dust removal structure 2 is provided on the base 1, which covers the conveying area of ​​the conveyor belt 9 and is used to intercept and collect the dust generated during the conveying process. One end of the dust removal structure 2 is connected to the feed trough 4 set on the feed seat 3 to realize the synchronous collection of dust in the feeding process.

[0018] In a preferred embodiment, a wide-mouth trough 5 is installed on the feed trough 4 by means of bolts. The wide-mouth trough has a gradually widening design, which can guide the phosphogypsum material to enter the feed trough 4 smoothly, prevent the material from overflowing from the trough opening during the feeding process, and reduce the impact force when the material falls, thereby reducing dust generation.

[0019] In a preferred embodiment, the diameter of the middle position of the conveyor roller 8 is smaller than the diameter of its two ends. This structural design can provide a middle limiting and guiding effect on the conveyor belt 9, preventing the conveyor belt 9 from shifting to both sides during long-term operation, ensuring the stability of the conveying, and at the same time conforming to the stress characteristics of the conveyor belt 9, reducing local wear between the roller and the conveyor belt 9.

[0020] In a preferred embodiment, the curved guide structure includes a mounting frame 15, which is fixedly mounted on the base 1 to provide mounting support for the guide components. A bottom roller 16 is provided in the middle of the mounting frame 15, which is in contact with the bottom of the conveyor belt 9 to provide stable support for the conveyor belt 9. Inclined rollers 17 are symmetrically arranged on both sides of the mounting frame 15. The inclined rollers 17 on both sides are symmetrically inclined to limit the sides of the conveyor belt 9, prevent the material from slipping to both sides during the conveying process, maintain the regularity of the material layer, and reduce dust caused by uneven material accumulation.

[0021] In a preferred embodiment, the adjustable correction structure 6 includes an adjustment frame 25 fixedly mounted on the base 1. The adjustment frame 25 is a rectangular frame structure, providing installation space for the correction adjustment components. A limiting groove 26 is symmetrically provided on the inner wall of the adjustment frame 25, extending along the length of the adjustment frame 25. A limiting slider 27 is provided within the limiting groove 26, allowing it to slide smoothly along the limiting groove 26. The limiting slider 27 is threadedly engaged with an adjusting screw 28. One end of the adjusting screw 28 is connected to the base 1 via a rotating seat 29. 9. The adjusting screw 28 can rotate freely and is fixed in position. The other end of the adjusting screw 28 passes through the adjusting frame 25 and is provided with a handle 30. The handle 30 is convenient for operators to adjust manually. The limit slider 27 is provided with a correction arm 31. The correction arm 31 extends outward perpendicular to the limit slider 27. The correction arm 31 is provided with a correction roller 32 that cooperates with the conveyor belt 9. The correction roller 32 is rotatably set and flexibly contacts the side of the conveyor belt 9. The limit slider 27 is driven to move by the adjusting screw 28, which in turn drives the correction roller 32 to adjust its position, thereby realizing the correction of the deviation of the conveyor belt 9.

[0022] In a preferred embodiment, the dust removal structure 2 includes multiple sets of support arms 19 fixedly connected to the base 1. These support arms 19 are evenly distributed along the length of the base 1, providing stable support for the dust removal hood 20. The tops of the support arms 19 are fixedly connected to the dust removal hood 20, which is positioned directly above the conveyor belt 9. The dust removal hood 20 is entirely enclosed, covering the conveying area of ​​the conveyor belt 9 and confining dust within the hood. One end of the dust removal hood 20 engages with the feed chute 4 to achieve complete dust coverage during the feeding process. The other end of the dust removal hood 20 is equipped with multiple sets of filter plates 21 for filtering... The filter plates 21 are arranged vertically for initial dust interception. Multiple sets of filter brushes 22 are provided on the filter plates 21. The filter brushes 22 are evenly distributed on the surface of the filter plates 21, which can enhance the dust interception effect and reduce the clogging of the filter plates 21. An air extraction pipe 23 is provided between adjacent filter plates 21. One end of the air extraction pipe 23 is located inside the dust removal hood 20. Its port is designed to be open, which can fully capture the dust-laden airflow inside the hood. The other end of the air extraction pipe 23 is connected to the dust collection device through the air guide pipe 24. The dust-laden airflow is drawn away from the dust removal hood 20 by the negative pressure generated by the dust collection device, so as to achieve centralized dust treatment.

[0023] In a preferred embodiment, the dust collector hood 20 is provided with semi-circular plates 33 at both ends that cooperate with the sides of the conveyor belt 9. The semi-circular plates 33 are arc-shaped and fit against the sides of the conveyor belt 9 to form a side sealing structure, which reduces the escape of dust from the gap between the two sides of the conveyor belt 9 and the dust collector hood 20, and further improves the sealing and dust removal effect.

[0024] Example 2: like Figure 1-6 The working principle of this utility model is as follows: After the drive motor 13 starts, the linkage wheel 12 at its output end drives the transmission wheel 10 on the conveyor roller 8 to rotate through the transmission belt 11, thereby driving the conveyor roller 8 to rotate. Under the support of the conveyor roller 8, the bottom support roller 16 of the curved guide structure, the inclined support roller 17 and multiple sets of bottom rollers 18, the conveyor belt 9 forms a stable closed loop operation state, providing a power basis for the conveying of phosphogypsum material, and making the conveyor belt 9 form a conveying state with a concave middle to avoid phosphogypsum spillage during the conveying process. The phosphogypsum material is guided by the wide-mouth trough 5 and falls smoothly into the feed trough 4, and then is conveyed to the surface of the conveyor belt 9 by the feed trough 4. The bottom roller 16 of the curved guide structure provides bottom support for the conveyor belt, and the inclined rollers 17 on both sides limit the sides of the conveyor belt 9 to maintain the regularity of the material layer, prevent the material from slipping to both sides, and ensure that the material is conveyed forward smoothly with the conveyor belt 9. If the conveyor belt 9 deviates during operation, the operator can rotate the handle 30 of the adjustable correction structure 6 to drive the adjusting screw 28 to rotate, which in turn drives the limiting slider 27 to slide along the limiting groove 26 in the adjusting frame 25. The correction arm 31 moves with the limiting slider 27, so that the correction roller 32 makes flexible contact with the side of the conveyor belt 9. The deviation trend of the conveyor belt 9 is corrected by the guiding force to ensure the continuous stability of the conveying process. The dust hood 20 covers the top of the conveyor belt 9, and the semi-circular plates 33 at both ends fit against the sides of the conveyor belt 9 to form a closed conveying space, which confines the dust generated during the material conveying process within the dust hood 20. The filter plate 21 and filter brush 22 at the end of the dust hood 20 initially intercept the dust-laden airflow. At the same time, the dust collection device is activated to generate negative pressure, which draws the dust-laden airflow out of the dust hood 20 through the air guide pipe 24 and the air extraction pipe 23, realizing the centralized collection and treatment of dust, avoiding dust from escaping and polluting the environment, and finally completing the dust-free transportation of phosphogypsum.

[0025] The beneficial effects of this utility model are as follows: The dust hood provides comprehensive coverage of the conveyor belt's transport area, and the side-sealing design of the semi-circular plates at both ends effectively blocks dust escape channels; the combination of filter plates and filter brushes achieves initial dust interception, and the linkage between the exhaust pipe and the dust collection device can quickly extract dust-laden airflow, controlling dust pollution at the source, significantly reducing dust concentration in the working environment, preventing operators from being exposed to high dust environments for extended periods and causing respiratory diseases, thus protecting their health; the central limiting structure of the conveyor roller, the side limiting function of the curved guide structure, and the active correction function of the adjustable correction structure work together to ensure the long-term stable operation of the conveyor belt, preventing material spillage caused by conveyor belt deviation; the combined design of the wide-mouth trough and the feed trough reduces material overflow during the feeding process, significantly reducing phosphogypsum material loss and improving conveying efficiency.

Claims

1. A dust-free phosphogypsum conveying device, comprising a base (1) and a feed seat (3), characterized in that: The base (1) is provided with two sets of support frames (7) arranged symmetrically. The support frames (7) are provided with conveying rollers (8). The base (1) is provided with an adjustable correction structure (6), multiple sets of curved guide structures and multiple sets of bottom rollers (18) arranged in this manner. The conveying rollers (8), multiple sets of curved guide structures and multiple sets of bottom rollers (18) are fitted with conveyor belts (9). The conveying rollers (8) are provided with transmission wheels (10). The transmission wheels (10) are connected to the linkage wheel (12) set on the output end of the drive motor (13) through the transmission belt (11). The drive motor (13) is fixedly connected to the base (1) through the fixed seat (14). The base (1) is provided with a dust removal structure (2). One end of the dust removal structure (2) is connected to the feed trough (4) set on the feed seat (3).

2. The dust-free phosphogypsum conveying device according to claim 1, characterized in that: The feed trough (4) is equipped with a wide-mouth trough (5) by bolts.

3. The dust-free phosphogypsum conveying device according to claim 1, characterized in that: The diameter of the middle position of the conveying roller (8) is smaller than the diameter of its two ends.

4. The dust-free phosphogypsum conveying device according to claim 1, characterized in that: The curved guide structure includes a mounting frame (15), with a bottom support roller (16) at the middle position of the mounting frame (15) and symmetrical inclined support rollers (17) on both sides of the mounting frame (15).

5. The dust-free phosphogypsum conveying device according to claim 1, characterized in that: The adjustable correction structure (6) includes an adjustment frame (25) fixedly installed on the base (1). The inner wall of the adjustment frame (25) is symmetrically provided with a limiting groove (26). The limiting groove (26) is provided with a limiting slider (27) that slides with it. The limiting slider (27) is threadedly engaged with the adjustment screw (28). One end of the adjustment screw (28) is connected to the base (1) through a rotating seat (29). The other end of the adjustment screw (28) passes through the adjustment frame (25) and is provided with a handle (30). The limiting slider (27) is provided with a correction arm (31). The correction arm (31) is provided with a correction roller (32) that cooperates with the conveyor belt (9).

6. The dust-free phosphogypsum conveying device according to claim 1, characterized in that: The dust removal structure (2) includes multiple sets of support arms (19) fixedly connected to the base (1). The top of the multiple sets of support arms (19) is fixedly connected to a dust removal hood (20) located directly above the conveyor belt (9). One end of the dust removal hood (20) is connected to the feed trough (4). The other end of the dust removal hood (20) is provided with multiple sets of filter plates (21). Multiple sets of filter brushes (22) are provided on the filter plates (21). An air extraction pipe (23) is provided between adjacent filter plates (21). One end of the air extraction pipe (23) is located inside the dust removal hood (20). The other end of the air extraction pipe (23) is connected to the dust collection device through the air guide pipe (24).

7. The dust-free phosphogypsum conveying device according to claim 6, characterized in that: The dust hood (20) is provided with semi-circular plates (33) at both ends that cooperate with the side of the conveyor belt (9).

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