Anti-blocking air inlet device of hot blast stove for fertilizer production

Abstract

The present disclosure relates to the technical field of hot blast stove, and one embodiment of the present disclosure provides a clog-proof air inlet device for hot blast stove for fertilizer production, which comprises a shell, a centrifugal fan and an air inlet pipeline, the air inlet pipeline is arranged at the output end of the centrifugal fan, one end of the air inlet pipeline is in communication with the shell, an air inlet assembly is arranged in the shell, the air inlet assembly comprises a first layer plate, the first layer plate is arranged in the shell, a plurality of dispersion openings are formed in the surface of the first layer plate, a shield is arranged in the shell, the shield surrounds the shell and the first layer plate, the air inlet pipeline is in communication with the inside of the shield, and a rotating shaft is rotatably connected to the inside of the shell. Through the above technical scheme, the technical problem that the air inlet efficiency is low in the prior art is solved, the traditional air inlet device adopts a simple straight cylinder type air duct structure, and when the airflow flows in the air duct, the airflow is subjected to great resistance, the wind speed is obviously attenuated, and the air cannot be quickly and sufficiently delivered to the inside of the hot blast stove.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of hot blast stoves, and more specifically, to an anti-clogging hot blast stove air inlet device for fertilizer production. Background Technology

[0002] Fertilizers are substances that provide one or more essential nutrients for plants, improve soil properties, and enhance soil fertility. They are one of the material foundations of agricultural production. They mainly include ammonium phosphate fertilizers, water-soluble fertilizers containing macronutrients, fertilizers containing micronutrients, bio-fertilizers, organic fertilizers, and multi-dimensional energy-concentrated organic fertilizers. In fertilizer production, the hot air furnace, as a core drying device, directly affects production efficiency and product quality due to the performance of its air intake system. However, existing hot air furnace air intake systems for fertilizer production have many drawbacks. On the one hand, air intake efficiency is low. Traditional air intake devices often use simple straight-cylinder duct structures. When airflow passes through the duct, it encounters significant resistance, resulting in a significant decrease in air velocity and an inability to quickly and adequately deliver air into the hot air furnace. Simultaneously, the design of the air inlet lacks optimization, easily leading to uneven airflow distribution. This results in an imbalance in heat distribution within the hot air furnace, not only prolonging fertilizer drying time but also increasing energy consumption.

[0003] On the other hand, existing air intake devices cannot perform self-cleaning. In fertilizer production environments, the air often contains impurities such as dust and fertilizer particles. Over time, these impurities accumulate inside the air intake device, gradually clogging the air ducts. Due to the lack of an effective cleaning mechanism, operators can only periodically stop the machine and manually disassemble equipment parts for cleaning. This not only consumes a lot of manpower and time, but the frequent shutdowns also seriously affect the continuity of fertilizer production and reduce the company's economic benefits.

[0004] Therefore, there is an urgent need for an air intake device for hot blast stoves used in fertilizer production that can improve the low air intake efficiency and has a self-cleaning function. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an anti-clogging hot blast stove air inlet device for fertilizer production, which solves the technical problem of low air inlet efficiency in the prior art. Traditional air inlet devices mostly adopt a simple straight-cylinder air duct structure. When the airflow flows in the air duct, it is subject to great resistance, resulting in a significant decrease in air velocity and an inability to quickly and adequately deliver air into the hot blast stove.

[0006] According to one aspect, at least one embodiment of this disclosure provides an anti-clogging hot blast stove air inlet device for fertilizer production, comprising:

[0007] The system includes a housing, a centrifugal fan, and an air inlet pipe, wherein the air inlet pipe is located at the output end of the centrifugal fan and one end of the air inlet pipe is connected to the housing.

[0008] An air intake assembly, wherein the air intake assembly is disposed inside the housing;

[0009] The air intake assembly includes a first layer plate disposed inside the outer shell. The surface of the first layer plate has a plurality of dispersing openings. A shroud is disposed inside the outer shell, and the shroud surrounds the outer shell and the first layer plate. The air intake pipe is connected to the inside of the shroud.

[0010] As a further technical solution, a second layer plate is provided inside the outer shell, the second layer plate is a grid-like mesh structure, an air inlet mesh is provided on the top of the outer shell, and a rotating shaft is rotatably connected inside the outer shell.

[0011] As a further technical solution, a driven wheel is provided at the lower end of the rotating shaft, and a driving wheel is connected to the bottom of the housing via electric drive. The driving wheel and the driven wheel are connected by belt drive.

[0012] As a further technical solution, the rotating shaft has an inner cavity, and the inner wall of the inner cavity has several air inlets around its circumference. An outer cover is fixed to the bottom of the outer shell, and the outer cover is rotatably and sealingly fitted outside the rotating shaft. The outer cover is connected to the air inlets.

[0013] As a further technical solution, an air inlet pipe is provided on one side of the outer cover, the lower end of the air inlet pipe is located outside the outer shell, and several rectangular tubes are provided outside the rotating shaft, the rectangular tubes being connected to the interior of the inner cavity.

[0014] As a further technical solution, the upper surface of the rectangular tube is provided with a number of air jet holes, a pair of scraper strips are provided on the upper surface of the rectangular tube, and a cleaning rod is provided at the top of the rotating shaft, the cleaning rod slidingly fitting against the upper surface of the outer shell.

[0015] As a further technical solution, a mating layer is provided on the top of the outer shell, and several connection holes are opened around the top of the outer shell.

[0016] As a further technical solution, the first layer plate and the second layer plate are connected, and the connection between the first layer plate and the second layer plate is rotatably connected to the rotating shaft.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] In this disclosure, the air intake assembly gathers airflow through a shroud. The dispersion port of the first layer plate ensures uniform airflow, avoiding the resistance problem of straight-tube air ducts and improving airflow efficiency. The grid-like mesh structure of the second layer plate performs secondary filtration of the airflow without obstructing its passage, ensuring that air is delivered quickly and in sufficient quantity to the hot air furnace. This solves the problems of significant wind speed attenuation and low air intake efficiency in traditional air intake devices, resulting in a more balanced heat distribution within the hot air furnace, shortening fertilizer drying time, and reducing energy consumption. The drive wheel and driven wheel rotate the rotating shaft, causing the scraper and cleaning rod on the rectangular tube to rotate continuously. The scraper removes impurities from the lower surface of the second layer plate, and the cleaning rod removes foreign objects from the lower surface of the air intake mesh. Simultaneously, high-pressure gas is ejected from the jet nozzles to purge the filter layer. The three work together to achieve autonomous cleaning without manual disassembly of the equipment, avoiding blockage of the air duct due to impurity accumulation, reducing downtime for cleaning, ensuring the continuity of fertilizer production, and reducing labor and time costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0021] Figure 2 This is an isometric sectional view of the present disclosure;

[0022] Figure 3 This is another isometric sectional view of this disclosure;

[0023] Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle;

[0024] Figure 5 Appendix to this disclosure Figure 3 Enlarged view of part B in the middle section;

[0025] In the diagram: 1. Outer shell; 2. Centrifugal fan; 3. Inlet duct; 4. Inlet assembly; 4-1. First layer plate; 4-2. Dispersion port; 4-3. Cover; 4-4. Second layer plate; 4-5. Inlet mesh; 4-6. Rotating shaft; 4-7. Driven wheel; 4-8. Driven wheel; 4-9. Inner cavity; 4-10. Inlet; 4-11. Outer cover; 4-12. Inlet pipe; 4-13. Rectangular tube; 4-14. Jet nozzle; 4-15. Scraper; 4-16. Cleaning rod; 5. Connecting layer; 6. Connection hole. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-5As shown, it illustrates an anti-clogging hot blast stove air inlet device for fertilizer production according to an embodiment of the present disclosure, comprising:

[0033] The system includes a housing 1, a centrifugal fan 2, and an air inlet pipe 3. The air inlet pipe 3 is located at the output end of the centrifugal fan 2, and one end of the air inlet pipe 3 is connected to the housing 1.

[0034] Air intake assembly 4, wherein the air intake assembly 4 is disposed inside the housing 1;

[0035] The air intake assembly 4 includes a first layer plate 4-1, which is disposed inside the outer shell 1. The surface of the first layer plate 4-1 has several dispersing openings 4-2. A shroud 4-3 is disposed inside the outer shell 1, surrounding the outer shell 1 and the first layer plate 4-1. The air intake pipe 3 is connected to the interior of the shroud 4-3. A second layer plate 4-4, which has a grid-like mesh structure, is disposed inside the outer shell 1. An air intake mesh 4-5 is disposed at the top of the outer shell 1. A rotating shaft 4-6 is rotatably connected inside the outer shell 1. A driven wheel 4-7 is disposed at the lower end of the rotating shaft 4-6. A driving wheel 4-8 is rotatably connected to the bottom of the inner shell 1 via electric drive. The driving wheel 4-8 and the driven wheel 4-7 are connected via belt drive. The outer shell 1 has an inner cavity 4-9, and several air inlets 4-10 are formed around the inner wall of the inner cavity 4-9. An outer cover 4-11 is fixed to the bottom of the inner shell 1. The outer cover 4-11 is rotatably and sealingly fitted outside the rotating shaft 4-6. The outer cover 4-11 is connected to the air inlets 4-10. An air inlet pipe 4-12 is provided on one side of the outer cover 4-11. The lower end of the air inlet pipe 4-12 is located outside the outer shell 1. Several rectangular tubes 4-13 are provided outside the rotating shaft 4-6. The rectangular tubes 4-13 are connected to the interior of the inner cavity 4-9. Several jet holes 4-14 are formed on the upper surface of the rectangular tubes 4-13. A pair of scraper strips 4-15 are provided on the upper surface of the rectangular tubes 4-13. A cleaning rod 4-16 is provided on the top of the rotating shaft 4-6. The cleaning rod 4-16 slides and fits against the upper surface of the outer shell 1.

[0036] In some examples, to achieve efficient air intake and automatic cleaning to prevent clogging, an air intake assembly 4 is designed. This assembly includes a first layer plate 4-1 that initially disperses and coarsely filters the hot air entering the shroud 4-3 through a dispersion port 4-2. A grid-like second layer plate 4-4 performs secondary filtration of the airflow, intercepting larger particles. The drive wheel 4-8 is electrically driven and drives the driven wheel 4-7 and the rotating shaft 4-6 to rotate via a belt. High-pressure air introduced by the air intake pipe 4-12 enters the outer cover 4-11, enters its inner cavity 4-9 through the air intake port 4-10 on the rotating shaft 4-6, and is then distributed to each rectangular tube 4-13, finally being ejected upwards from the jet hole 4-14. The rotating rectangular tube 4-13 drives the scraper strips 4-15 on its surface to continuously scrape. The lower surface of the second layer plate 4-4 is cleaned of attached blockages. At the same time, the cleaning rod 4-16 at the top of the rotating shaft 4-6 rotates synchronously to scrape off foreign objects attached to the lower surface of the air inlet mesh 4-5 at the top of the outer shell 1. The high-pressure gas sprayed upward from the jet nozzle 4-14 can achieve a cleaning effect. On the one hand, it assists in blowing away the pores of the filter layer, and on the other hand, it forms an upward airflow, promoting the intake of external air through the air inlet mesh 4-5. Hot air is sent into the hood 4-3 by the centrifugal fan 2 through the air inlet pipe 3, and enters the hot air furnace in sequence through the dispersion port 4-2, the second layer plate 4-4 grille, and the air inlet mesh 4-5. During this process, foreign objects are intercepted step by step. The rotating scraper 4-15 and the cleaning rod 4-16, combined with jet cleaning, effectively prevent the clogging of each level of the filter layer and ensure continuous and smooth air intake.

[0037] For example, such as Figure 1 As shown, the top of the outer shell 1 is provided with a mating layer 5, and a number of connection holes 6 are opened around the top of the outer shell 1.

[0038] In some examples, the mating layer 5 facilitates the quick installation and positioning of the air inlet device with the hot air furnace inlet, and the connection holes 6 opened around the top of the outer shell 1 are used for bolts or clips and other connecting parts to pass through, so as to achieve a stable and sealed connection with the hot air furnace inlet, ensuring the reliability and airtightness of the equipment operation.

[0039] For example, such as Figure 5 As shown, the first layer plate 4-1 and the second layer plate 4-4 are connected, and the connection between the first layer plate 4-1 and the second layer plate 4-4 is rotatably connected to the rotating shaft 4-6.

[0040] In some examples, the first layer plate 4-1 and the second layer plate 4-4 are rigidly connected by bolts or welding. A deep groove ball bearing or self-lubricating bushing is embedded at the connection point, forming a clearance-fit rotating connection with the rotating shaft 4-6. This bearing assembly can withstand the radial load during filter layer operation, while grease filling reduces rotational resistance, ensuring that the rotating shaft 4-6 drives the scraper 4-15 without jamming. The lower surface of the second layer plate 4-4 has an arc-shaped guide groove along its circumference that matches the scraper 4-15. When the rotating shaft 4-6 drives the scraper 4-15 to rotate, the scraper 4-15's cutting edge slides tightly against the inner wall of the guide groove, effectively removing fibrous or particulate impurities adhering to the plate surface and preventing a decrease in flow efficiency at the dispersion port 4-2 due to material accumulation. This rotating assembly design integrates the filter layer's support structure and unclogging mechanism in the same axial space, making it suitable for integrated installation in compact filtration equipment.

[0041] In actual use: When the centrifugal fan 2 is started, air is sent into the shroud 4-3 through the air inlet pipe 3. After initial convergence in the shroud 4-3, it is evenly dispersed through the dispersion port 4-2 of the first layer plate 4-1, further filtered through the grid-like second layer plate 4-4, and then enters the hot air furnace through the air inlet mesh 4-5 at the top of the outer shell 1. At the same time, the electric drive wheel 4-8 rotates, which drives the driven wheel 4-7 and the rotating shaft 4-6 to rotate through the belt. The rotating shaft 4-6 drives the external rectangular tube 4-13 and the top cleaning rod 4-16 to rotate synchronously. The high-pressure air introduced by the air inlet pipe 4-12 enters the outer cover 4-11, enters the inner cavity 4-9 through the air inlet 4-10 of the inner cavity 4-9 of the rotating shaft 4-6, and then is divided to the rectangular tube 4-13 and sprayed upward from the jet hole 4-14. The scraper 4-15 on the rotating rectangular tube 4-13 continuously scrapes the lower surface of the second plate 4-4 to clean the attached impurities. The cleaning rod 4-16 scrapes away foreign objects from the lower surface of the air inlet mesh 4-5 at the top of the outer casing 1. The high-pressure gas ejected from the jet hole 4-14 assists in blowing away the pores of the filter layer to prevent blockage and ensure smooth air intake.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An anti-clogging hot air inlet device for fertilizer production, characterized in that, include: The casing (1), centrifugal fan (2) and air inlet pipe (3) are provided. The air inlet pipe (3) is located at the output end of the centrifugal fan (2). One end of the air inlet pipe (3) is connected to the casing (1). An air intake assembly (4) is disposed inside the housing (1); The air intake assembly (4) includes a first layer plate (4-1), which is disposed inside the outer shell (1). The surface of the first layer plate (4-1) is provided with a plurality of dispersion openings (4-2). A shroud (4-3) is disposed inside the outer shell (1). The shroud (4-3) surrounds the outer shell (1) and the first layer plate (4-1) for a period of time. The air intake pipe (3) is connected to the inside of the shroud (4-3).

2. The anti-clogging hot air inlet device for fertilizer production according to claim 1, characterized in that, The outer shell (1) is provided with a second layer plate (4-4) inside, the second layer plate (4-4) is a grid-like mesh structure, the top of the outer shell (1) is provided with an air inlet mesh (4-5), and the outer shell (1) is rotatably connected with a rotating shaft (4-6).

3. The anti-clogging hot air furnace inlet device for fertilizer production according to claim 2, characterized in that, The lower end of the rotating shaft (4-6) is provided with a driven wheel (4-7), and the bottom of the outer shell (1) is connected to a driving wheel (4-8) by electric drive. The driving wheel (4-8) and the driven wheel (4-7) are connected by belt drive.

4. The anti-clogging hot air furnace inlet device for fertilizer production according to claim 3, characterized in that, The rotating shaft (4-6) has an inner cavity (4-9) inside, and a number of air inlets (4-10) are opened around the inner wall of the inner cavity (4-9). An outer cover (4-11) is fixed at the bottom of the outer shell (1). The outer cover (4-11) is rotatably and sealingly fitted outside the rotating shaft (4-6). The outer cover (4-11) is connected to the air inlets (4-10).

5. The anti-clogging hot air furnace inlet device for fertilizer production according to claim 4, characterized in that, An air inlet pipe (4-12) is provided on one side of the outer cover (4-11). The lower end of the air inlet pipe (4-12) is located outside the outer shell (1). Several rectangular tubes (4-13) are provided outside the rotating shaft (4-6). The rectangular tubes (4-13) are connected to the interior of the inner cavity (4-9).

6. The anti-clogging hot air inlet device for fertilizer production according to claim 5, characterized in that, The upper surface of the rectangular tube (4-13) is provided with a plurality of air jet holes (4-14), and a pair of scraper strips (4-15) are provided on the upper surface of the rectangular tube (4-13). A cleaning rod (4-16) is provided on the top of the rotating shaft (4-6), and the cleaning rod (4-16) slides and fits against the upper surface of the outer shell (1).

7. The anti-clogging hot air furnace inlet device for fertilizer production according to claim 1, characterized in that, The top of the outer shell (1) is provided with a mating layer (5), and a number of connection holes (6) are opened around the top of the outer shell (1).

8. The anti-clogging hot air inlet device for fertilizer production according to claim 2, characterized in that, The first layer plate (4-1) is connected to the second layer plate (4-4), and the connection between the first layer plate (4-1) and the second layer plate (4-4) is rotatably connected to the rotating shaft (4-6).

Images