High -efficient dustproof conveying device for production of phosphate compound fertilizer

Abstract

The application discloses a kind of high-efficiency dustproof conveying devices for phosphorus compound fertilizer production, including conveying frame, closed dust cover, conveying drive mechanism, dustproof sealing assembly, dynamic dust suppression mechanism, self-cleaning conveyor belt, dust collection component and intelligent control unit;Closed dust cover cover is located in the outside of conveying frame, and is sealed and connected with conveying frame by dustproof sealing assembly at both ends;Dynamic dust suppression mechanism is installed in the inside upper part of dust cover, self-cleaning conveyor belt is set on the conveying roller of conveying frame, and dust collection component is communicated with the inner chamber of dust cover;The application is synergistically designed by closed sealing, dynamic dust suppression, self-cleaning conveying and dust centralized collection, realizes phosphorus compound fertilizer conveying efficient dust prevention all the way, and the amount of dust overflow is reduced by more than 95%, while avoiding material adhesion and blockage, improving conveying efficiency and environmental protection, suitable for the conveying scene of various phosphorus compound fertilizer particles and powder materials.

Description

Technical Field

[0001] This invention belongs to the technical field of phosphate compound fertilizer production equipment, specifically relating to a high-efficiency dustproof conveying device for phosphate compound fertilizer production. Background Technology

[0002] Phosphate compound fertilizer, a key compound fertilizer in agricultural production, involves the conveying, mixing, granulation, and drying of various powders and granules such as phosphate rock powder, ammonium phosphate, and potassium sulfate. Material conveying is the core link connecting these processes, directly impacting production efficiency, material loss, and the workshop environment. Currently, commonly used conveying equipment in phosphate compound fertilizer production includes open belt conveyors, scraper conveyors, and simple enclosed conveying devices. However, existing conveying equipment suffers from core technical problems in practical applications, such as severe dust overflow, poor sealing of dustproof structures, easy dust adhesion to the conveying surface, and untimely dust removal. These problems are specifically manifested as follows:

[0003] Open-type belt conveyors lack dustproof structures. During transport, phosphate fertilizer powder and fine particles are easily stirred up by airflow disturbances and material drop impacts, generating large amounts of dust that permeate the entire workshop. This not only causes material loss (with a loss rate of 5%-12%) but also pollutes the production environment, irritates the respiratory tract of operators, and harms their health, while also failing to meet environmental emission requirements. Existing simple enclosed conveyor systems mostly use fixed dust covers, which only achieve preliminary dust prevention and have two key sealing defects: first, gaps exist at the joints between the dust cover and the conveyor frame, allowing dust to easily escape; second, the dust cover is a fixed unit, making it difficult to clean the accumulated dust inside, and the positive pressure generated during material transport can push dust out through the gaps. Poor dust control; phosphate compound fertilizer materials have a certain degree of hygroscopicity and adhesion, and fine powder easily adheres to the surface of the conveyor belt. Long-term accumulation will form clumps, which not only increases the conveying resistance and reduces the conveying efficiency, but also leads to uneven material mixing and affects product quality; existing devices mostly use manual periodic dust removal or fixed scraper dust removal. Manual dust removal is inefficient, labor-intensive, and dust is re-entrained during dust removal; fixed scrapers are prone to wear and cannot adapt to changes in the adhesion on the belt surface, resulting in incomplete dust removal; some conveying devices have added dust collection structures, but most are single dust inlet designs that cannot cover the entire conveying cross section and lack dynamic dust suppression function. They can only collect dust that has already been raised and cannot suppress dust generation at the source, resulting in low dust control efficiency and high energy consumption.

[0004] To address the aforementioned technical problems, some improvements have emerged in existing technologies, such as installing dust bags on the outside of the conveying device and installing fixed suction fans inside the dust cover. However, these solutions are only partial optimizations and do not involve a holistic design encompassing sealing, dust suppression, dust removal, and collection throughout the entire process. Therefore, they cannot completely solve the problems of dust spillage and accumulation: dust bags have poor sealing performance, are easily damaged, and have a short service life; fixed suction fans have a fixed airflow, cannot be adjusted according to dust concentration, have high energy consumption, and exhibit unstable dust suppression effects; and the lack of a specifically designed self-cleaning conveying structure means that the problem of material adhesion remains unresolved.

[0005] Therefore, it is necessary to develop a high-efficiency dust-proof conveying device for phosphate compound fertilizer production. Through structural optimization and functional synergy, this device can solve the single core technical problems of dust overflow, poor sealing, material adhesion, and untimely dust removal in existing technologies. It can achieve high-efficiency dust prevention, automatic dust removal, and centralized dust collection throughout the entire process, reduce material loss and energy consumption, improve the production environment, and meet the needs of large-scale and environmentally friendly phosphate compound fertilizer production. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of existing phosphate compound fertilizer conveying devices and provide a high-efficiency dustproof conveying device for phosphate compound fertilizer production. This invention solves the technical problems of serious dust overflow, poor sealing of dustproof structure, easy dust adhesion to conveying surface and untimely dust removal in the existing technology. It achieves high-efficiency dust prevention, automatic dust removal and centralized dust collection throughout the phosphate compound fertilizer conveying process, improves conveying efficiency and environmental protection, and reduces material loss and labor costs.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency dustproof conveying device for phosphate compound fertilizer production includes a conveyor frame, a closed dust cover, a conveying drive mechanism, a dustproof sealing assembly, a dynamic dust suppression mechanism, a self-cleaning conveyor belt, a dust collection assembly, and an intelligent control unit. Conveying rollers are installed on the conveyor frame; a closed dust cover is installed on the outside of the conveyor frame to form a sealed conveying chamber; the conveying drive mechanism is connected to the conveying rollers; the dustproof sealing assembly includes end sealing rings, side sealing brushes and flexible dustproof curtains, which respectively seal the dust cover port, both sides of the self-cleaning conveyor belt and the material inlet and outlet; the dynamic dust suppression mechanism includes an adjustable spray pipe, atomizing nozzles and a dust concentration sensor. The atomizing nozzles are located inside the dust cover, the adjustable spray pipe is located inside the dust cover and passes through the dust cover to connect with the atomizing nozzles, the dust concentration sensor is fixed on the adjustable spray pipe and is electrically connected to the intelligent control unit; The self-cleaning conveyor belt is sleeved on the outside of the conveyor roller. The self-cleaning conveyor belt is equipped with arc-shaped anti-slip protrusions and cleaning protrusions. The frame is equipped with an elastic cleaning scraper that fits into the cleaning protrusions. The dust collection assembly includes a dust hopper, a dust suction pipe and a pulse dust collector. The pulse dust collector is connected to the dust hopper through the dust suction pipe, and the dust hopper is connected to the inner cavity of the dust cover through a pipe.

[0008] In a preferred embodiment of the present invention, the enclosed dust cover is made of transparent PC material with a thickness of 8-12mm and an arc curvature of 1:5-1:8, and both ends are detachably connected to the conveyor frame.

[0009] In a preferred embodiment of the present invention, the end sealing ring is a wear-resistant rubber trapezoidal cross section, the side sealing brush is made of nylon bristles with a length of 15-20mm, and the flexible dustproof curtain is made of PVC material with a thickness of 3-5mm.

[0010] In a preferred embodiment of the present invention, the adjustable spray pipe is made of stainless steel, the atomizing nozzle is detachable and can be installed, the atomization angle of the atomizing nozzle is 60-90°, the spray pipe is connected to a water supply pump, and the water supply pump is electrically connected to an intelligent control unit.

[0011] In a preferred embodiment of the present invention, the self-cleaning conveyor belt is made of rubber with a thickness of 10-15mm, the anti-slip protrusions are 3-5mm high, and the cleaning ridges are made of hard rubber with a height of 5-8mm.

[0012] In a preferred embodiment of the present invention, the elastic cleaning scraper is made of polyurethane and is fixed to the conveyor frame by a spring, elastically fitting with the cleaning protrusion.

[0013] In a preferred embodiment of the present invention, the dust collection hopper has a conical structure, the inner wall is coated with a wear-resistant coating, and a baffle plate is installed inside; the dust collection pipe is equipped with an air volume regulating valve.

[0014] In a preferred embodiment of the present invention, the conveying drive mechanism is electrically connected to the intelligent control unit via a frequency converter.

[0015] In a preferred embodiment of the present invention, the intelligent control unit includes a PLC controller, a touch panel, and an alarm module. The alarm module is an audible and visual alarm that triggers an alarm when a fault occurs.

[0016] In a preferred embodiment of the present invention, a slightly negative pressure environment is formed inside the dust cover, the pulse dust collector has a power of 3-5kW, and the dust concentration sensor has a detection range of 0-50mg / m³. 3 .

[0017] Compared with existing technologies, the present invention has the following advantages: 1. Fully sealed and dustproof, preventing dust spillage: This invention uses a closed dust cover combined with a triple dustproof sealing component. The end sealing ring achieves port sealing, the side sealing brush is attached to the surface of the conveyor belt, and the flexible dustproof curtain blocks the material inlet and outlet, forming a closed conveying cavity. This completely solves the problem of dust spillage caused by sealing gaps in the prior art, reducing dust spillage by more than 95%, greatly improving the workshop production environment, and reducing material loss.

[0018] 2. Dynamic dust suppression, inhibiting dust generation at the source: By setting adjustable spray pipes and atomizing nozzles inside the dust cover, and with real-time monitoring by a dust concentration sensor, the spray volume is intelligently adjusted to suppress dust at the source of dust raised by materials, thus preventing dust from spreading; compared with the existing fixed dust collection structure, the dust suppression efficiency is increased by 40% and energy consumption is reduced by 30%.

[0019] 3. Automatic dust removal to prevent material adhesion and blockage: The arc-shaped anti-slip protrusions on the surface of the self-cleaning conveyor belt increase the friction of the material and prevent it from slipping; the dust removal protrusions on the back cooperate with the elastic dust removal scraper to automatically scrape off the dust adhering to the back when the conveyor belt is running, without the need for manual intervention. The dust removal is thorough, which solves the problems of high conveying resistance and low efficiency caused by material adhesion and agglomeration in the existing technology, and improves the conveying efficiency by 20%.

[0020] 4. Centralized dust collection, environmental compliance: The dust collection component creates negative pressure through a negative pressure fan, which sends the dust raised inside the dust cover through the dust collection hopper and suction pipe into the pulse dust collector. The filtered clean air is then discharged, achieving centralized dust treatment, avoiding secondary pollution, and meeting environmental emission requirements.

[0021] 5. Intelligent control and high degree of automation: The intelligent control unit monitors dust concentration and equipment operating status in real time, automatically adjusts the spray volume, fan air volume and conveying speed, and automatically alarms in case of failure, improving the stability and safety of equipment operation.

[0022] 6. Simple structure and convenient disassembly and maintenance: Key components such as the enclosed dust cover, atomizing nozzle, and dust removal scraper are all detachable, which facilitates daily inspection, replacement and internal cleaning, resulting in a long service life and low maintenance costs.

[0023] In summary, this invention, through a synergistic design of fully sealed dust prevention, dynamic source dust suppression, automatic dust removal and anti-adhesion, centralized dust collection, and intelligent control, completely solves the core technical problems of existing phosphate fertilizer conveying devices, such as dust overflow, poor sealing, material adhesion, and untimely dust removal. It has advantages such as high dust prevention efficiency, good conveying effect, low energy consumption, strong environmental protection, and convenient maintenance. It is suitable for long-distance, continuous conveying of various powder and granular materials in phosphate fertilizer production and has high application value. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1This is a front view of a high-efficiency dust-proof conveying device for phosphate compound fertilizer production, provided in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of a self-cleaning conveyor belt structure provided in an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of a dustproof sealing assembly structure provided in an embodiment of the present invention.

[0028] Figure 4 This invention provides a schematic diagram of the connection of an intelligent control unit according to an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figures 1-4 As shown, this embodiment of the invention provides a high-efficiency dustproof conveying device for phosphate compound fertilizer production, including a conveyor frame 1, a closed dust cover 2, a conveying drive mechanism 3, a dustproof sealing assembly 4, a dynamic dust suppression mechanism 5, a self-cleaning conveyor belt 6, a dust collection assembly 7, and an intelligent control unit 8.

[0031] The conveyor frame 1 is a carbon steel frame structure. Conveying rollers 11, made of stainless steel, are installed on the conveyor frame 1. A closed dust cover 2 is installed on the outside of the conveyor frame 1 to form a sealed conveying chamber. The conveying drive mechanism 3 is connected to the conveying rollers 11. The dustproof sealing assembly 4 includes an end sealing ring 41, a side sealing brush 42, and a flexible dustproof curtain 43, which respectively seal the port of the dust cover 2, both sides of the self-cleaning conveyor belt 6, and the material inlet and outlet. The dynamic dust suppression mechanism 5 includes an adjustable spray pipe 51, an atomizing nozzle 52, and a dust concentration sensor 53. The atomizing nozzle 52 is located inside the dust cover 2, and the adjustable spray pipe 51 is located inside the dust cover 2 and passes through the dust cover 2 to connect with the atomizing nozzle 52. The dust concentration sensor 53 is fixed on the adjustable spray pipe 51 and is electrically connected to the intelligent control unit 8.

[0032] The self-cleaning conveyor belt 6 is fitted outside the conveyor roller 11. The self-cleaning conveyor belt 6 has arc-shaped anti-slip protrusions 61 and cleaning ridges 62. The frame 1 has an elastic cleaning scraper 63 that fits against the cleaning ridges 62. The dust collection assembly 7 includes a dust hopper 71, a suction pipe 72, and a pulse dust collector 73. The pulse dust collector 73 is connected to the dust hopper 71 through the suction pipe 72, and the dust hopper 71 is connected to the inner cavity of the dust cover 2 through a pipe. The intelligent control unit 8 is electrically connected to each actuator to achieve intelligent control. When the dust collection assembly 7 operates, it creates a slight negative pressure inside the dust cover to prevent dust from overflowing. Simultaneously, it sends the raised dust through the dust hopper and suction pipe into the pulse dust collector. Filtered clean air is discharged, and the dust falls into the dust collector's ash hopper, which is cleaned periodically.

[0033] The enclosed dust cover 2 is made of transparent PC material, 8-12mm thick, with an arc curvature of 1:5-1:8, and its two ends are detachably connected to the conveyor frame 1. A slightly negative pressure environment is created inside the dust cover 2. The pulse dust collector 73 has a power of 3-5kW, and the dust concentration sensor 53 has a detection range of 0-50mg / m³. 3 The dust concentration sensor 53, model GY-DUST-100, monitors the dust concentration inside the dust cover in real time and is electrically connected to the intelligent control unit 8.

[0034] The end sealing ring 41 is made of wear-resistant rubber with a trapezoidal cross-section; the side sealing brush 42 has nylon bristles with a length of 15-20mm; the flexible dustproof curtain 43 is made of PVC with a thickness of 3-5mm. The adjustable spray pipe 51 is made of stainless steel; the atomizing nozzle 52 is detachable and can be installed; the atomization angle of the atomizing nozzle 52 is 60-90°; the spray pipe is connected to the water supply pump; and the water supply pump is electrically connected to the intelligent control unit 8.

[0035] The self-cleaning conveyor belt 6 is made of rubber with a thickness of 10-15mm. The anti-slip protrusions 61 are 3-5mm high, and the cleaning ridges 62 are triangular hard rubber with a height of 5-8mm.

[0036] The elastic cleaning scraper 63 is made of polyurethane and is fixed to the conveyor frame 1 by springs, elastically fitting with the cleaning protrusion 62. The dust collection hopper 71 has a conical structure with a wear-resistant coating on the inner wall and a guide plate installed inside; the dust collection pipe 72 is equipped with an air volume regulating valve.

[0037] The conveyor drive mechanism 3 is electrically connected to the intelligent control unit 8 via a frequency converter. The intelligent control unit 8 includes a PLC controller, a touch panel, and an alarm module. The alarm module is an audible and visual alarm that triggers in case of a fault. The touch panel is a 7-inch touchscreen that interacts with the PLC controller, allowing manual parameter setting, equipment start / stop, and real-time display of operating data such as dust concentration, equipment speed, and fan airflow. The alarm module is an audible and visual alarm, electrically connected to the PLC controller. When the dust concentration exceeds the set threshold of 10 mg / m³, or when there is a motor overload or fan failure, the alarm is triggered to alert the operator.

[0038] The working principle of a high-efficiency dust-proof conveying device for phosphate compound fertilizer production is as follows: When the present invention is in operation, the operator starts the equipment through the intelligent control unit 8. The intelligent control unit 8 controls the start of the conveying drive mechanism 3, the pulse dust collector 73 and the water supply pump. The conveying drive mechanism 3 drives the conveying roller 11 to rotate, which in turn drives the self-cleaning conveyor belt 6 to operate. The operation of the pulse dust collector 73 creates a slight negative pressure inside the dust cover 2, making it difficult for dust to overflow. The phosphate compound fertilizer material is fed into the self-cleaning conveyor belt 6 from the feed end and moves towards the discharge end with the conveyor belt. The arc-shaped anti-slip protrusions 61 on the surface prevent the material from slipping.

[0039] During material conveying, the dust concentration sensor 53 monitors the dust concentration inside the dust cover 2 in real time. When the concentration is lower than the set threshold, the water pump operates at low power and the atomizing nozzle 52 sprays a small amount of water. When the concentration is higher than the set threshold, the intelligent control unit 8 controls the water pump to increase its power and the atomizing nozzle 52 sprays a large amount of water. The tiny droplets collide and agglomerate with the dust, suppressing the dust from rising and achieving dynamic dust suppression.

[0040] When the conveyor belt is running, the back cleaning protrusions 62 move with the belt body, and the elastic cleaning scraper 63 automatically scrapes off the dust adhering to the protrusions and the back of the belt body. The dust falls into the collection box. A small amount of dust that is not suppressed by the spray in the dust cover 2 enters the pulse dust collector 73 through the dust collection hopper 71 and the dust suction pipe 72 under the action of negative pressure. The filtered clean air is discharged, and the dust is collected and treated in a centralized manner.

[0041] During equipment operation, the intelligent control unit 8 monitors the operating status of each component in real time, automatically adjusts the conveying speed, spray volume and fan air volume, and triggers an alarm in case of failure to ensure stable operation of the equipment; the material is finally discharged from the discharge end, completing the entire process of efficient dustproof conveying.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency dust-proof conveying device for phosphate compound fertilizer production, characterized in that, It includes a conveyor frame (1), a closed dust cover (2), a conveyor drive mechanism (3), a dustproof sealing assembly (4), a dynamic dust suppression mechanism (5), a self-cleaning conveyor belt (6), a dust collection assembly (7), and an intelligent control unit (8). A conveyor roller (11) is installed on the conveyor frame (1); a closed dust cover (2) is installed on the outside of the conveyor frame (1) to form a closed conveying chamber; the conveyor drive mechanism (3) is connected to the conveyor roller (11) for transmission; the dustproof sealing assembly (4) includes an end sealing ring (41), a side sealing brush (42) and a flexible dustproof curtain (43), which respectively seal the port of the dust cover (2), both sides of the self-cleaning conveyor belt (6) and the material inlet and outlet; the dynamic dust suppression mechanism (5) includes an adjustable spray pipe (51), an atomizing nozzle (52) and a dust concentration sensor (53). The atomizing nozzle (52) is installed inside the dust cover (2), the adjustable spray pipe (51) is located inside the dust cover (2) and passes through the dust cover (2) to connect with the atomizing nozzle (52), the dust concentration sensor (53) is fixed on the adjustable spray pipe (51), and the dust concentration sensor (53) is electrically connected to the intelligent control unit (8); The self-cleaning conveyor belt (6) is fitted on the outside of the conveyor roller (11). The self-cleaning conveyor belt (6) is provided with an arc-shaped anti-slip protrusion (61) and a cleaning protrusion (62). The frame (1) is provided with an elastic cleaning scraper (63) that fits against the cleaning protrusion (62). The dust collection assembly (7) includes a dust collection hopper (71), a dust suction pipe (72), and a pulse dust collector (73). The pulse dust collector (73) is connected to the dust collection hopper (71) through the dust suction pipe (72). The dust collection hopper (71) is connected to the inner cavity of the dust cover (2) through a pipe.

2. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The enclosed dust cover (2) is made of transparent PC material with a thickness of 8-12mm and an arc curvature of 1:5-1:

8. Both ends are detachably connected to the conveyor frame (1).

3. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The end sealing ring (41) is a wear-resistant rubber trapezoidal cross section, the side sealing brush (42) is nylon bristles with a length of 15-20mm, and the flexible dustproof curtain (43) is made of PVC material with a thickness of 3-5mm.

4. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The adjustable spray pipe (51) is made of stainless steel. The atomizing nozzle (52) is detachable and can be installed. The atomizing nozzle (52) has an atomization angle of 60-90°. The spray pipe is connected to the water supply pump, and the water supply pump is electrically connected to the intelligent control unit (8).

5. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The self-cleaning conveyor belt (6) is made of rubber with a thickness of 10-15mm. The anti-slip protrusions (61) are 3-5mm high, and the cleaning protrusions (62) are made of hard rubber with a height of 5-8mm.

6. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The elastic cleaning scraper (63) is made of polyurethane and is fixed to the conveyor frame (1) by springs, and is elastically fitted to the cleaning ridge (62).

7. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The dust collection hopper (71) has a conical structure with a wear-resistant coating on the inner wall and a baffle plate installed inside; the dust collection pipe (72) is equipped with an air volume regulating valve.

8. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The conveying drive mechanism (3) is electrically connected to the intelligent control unit (8) via a frequency converter.

9. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, The intelligent control unit (8) includes a PLC controller, a touch panel and an alarm module. The alarm module is an audible and visual alarm that triggers an alarm when a fault occurs.

10. The high-efficiency dust-proof conveying device for phosphate compound fertilizer production according to claim 1, characterized in that, A slightly negative pressure environment is formed inside the dust cover (2). The pulse dust collector (73) has a power of 3-5kW, and the dust concentration sensor (53) has a detection range of 0-50mg / m³. 3 .

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