A small-scale pipeline dust collection device for fertilizer production processes.

Abstract

This utility model discloses a small-scale pipeline dust removal device for fertilizer production processes, including a dust removal shell. The dust removal shell has an air inlet on one side and an air outlet on the other side. Multiple vertical partitions are arranged inside the dust removal shell, and a screen is arranged horizontally below the partitions. The multiple partitions form a baffle channel. A bottom discharge port is provided at the bottom of the dust removal shell, and the screen is located above the bottom discharge port. This utility model can remove dust with hygroscopic properties, reduce material accumulation in the dust extraction pipeline, and intercept dust within the small dust removal device as much as possible, ensuring the normal operation of the dust extraction pipeline.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production technology, and in particular to a small-scale pipeline dust removal device for fertilizer production process. Background Technology

[0002] Dust removal equipment, which is already widely used in various production processes, can be broadly classified into the following categories based on different dust removal methods: Mechanical dust collection equipment: This type of equipment uses mechanical forces such as gravity, inertia, or centrifugal force to separate dust, such as gravity settling chambers, inertial dust collectors, and cyclone dust collectors. These devices are simple in structure and low in cost, but their efficiency in collecting fine particulate dust is limited.

[0003] Washing-type dust collection equipment: This type of equipment captures dust by bringing a liquid (usually water) into contact with the dust-laden airflow, using inertial impaction and diffusion. Examples include spray towers and Venturi scrubbers. It offers high dust removal efficiency but presents challenges such as wastewater treatment and equipment corrosion.

[0004] Filtration-type dust collection equipment: This type of equipment uses filter media to intercept dust, such as bag filters and granular bed dust collectors. It effectively captures fine particles and has high dust removal efficiency, but it is prone to filter clogging and requires regular cleaning and maintenance.

[0005] Electrostatic precipitators: These devices use a high-voltage electric field to charge dust particles, which are then adsorbed onto the electrode plates by the electric field force. They have the advantages of handling large air volumes and low pressure loss, but the equipment investment and operating costs are relatively high, and they are sensitive to the resistivity of the dust.

[0006] Magnetic dust removal equipment: It is designed for magnetic dust and uses magnetic force to separate dust from airflow. Its application range is relatively limited, and it is mainly suitable for specific working conditions containing magnetic particles.

[0007] In practical applications, technicians typically select appropriate dust removal methods and equipment based on the characteristics of the production process, the material properties of the dust (such as particle size distribution, density, humidity, and chemical corrosivity), and dust recovery requirements. However, when dealing with dusts that have hygroscopic properties (such as some water-soluble fertilizer dust, phosphate dust, and certain organic chemical dusts), existing conventional dust removal solutions and equipment often face intractable technical bottlenecks. Specific problems are as follows: High risk of pipe blockage, affecting system operational stability: Moisture-absorbing dust is highly susceptible to deliquescence and agglomeration during transport if it comes into contact with moisture in the air or trace amounts of residual moisture on the inner wall of the pipe. This agglomerated dust gradually adheres to the inner wall of the dust extraction pipe, reducing the pipe's cross-sectional area and increasing airflow resistance, potentially leading to complete blockage. Blockage not only interrupts the normal operation of the dust collection system but also necessitates shutdown for manual cleaning, significantly reducing production efficiency and potentially causing safety hazards due to a sudden increase in pressure within the pipe.

[0008] Conventional dust removal equipment has poor adaptability and limited dust removal efficiency. For filtration-type dust removal equipment, dust that has absorbed moisture will adhere to the surface of the filter material, forming a hard "clogged bag" phenomenon. Conventional pulse cleaning and other methods are difficult to effectively remove it, resulting in a sharp decrease in the air permeability of the filter material, a continuous increase in equipment resistance, and ultimately the loss of dust removal capability.

[0009] Although washing-type dust removal equipment can capture moisture-absorbing dust, some dust may undergo secondary agglomeration inside the equipment (such as spray pipes and demisters), causing internal blockage and affecting the long-term stable operation of the equipment.

[0010] Although mechanical or electrostatic precipitators can separate some dust, their separation efficiency will be significantly reduced for dust that has already absorbed moisture and become more sticky. Furthermore, the separated dust is still prone to clumping at the equipment's ash discharge port, leading to poor ash discharge.

[0011] Dust recycling is difficult and material waste is serious: the physical form of dust changes after it absorbs moisture and clumps together, making it difficult to collect through conventional recycling devices. Furthermore, the clumped material may lose its original use value due to uneven composition or impurities, resulting in material waste and failing to meet the production requirements of energy conservation, emission reduction and resource recycling.

[0012] High equipment maintenance costs and shortened service life: To deal with the blockage and adhesion problems caused by moisture and dust, enterprises need to frequently disassemble, clean and maintain pipelines and dust removal equipment, which not only increases labor and time costs, but also causes wear and tear on equipment parts due to frequent disassembly and assembly, thus shortening the overall service life of the equipment. Utility Model Content

[0013] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a small-scale pipeline dust removal device for fertilizer production processes. This device can remove dust with hygroscopic properties, reduce material accumulation in the dust extraction pipeline, and intercept dust within the small dust removal equipment as much as possible, thus ensuring the normal operation of the dust extraction pipeline.

[0014] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a small pipeline dust removal device for fertilizer production process, including a dust removal shell, an air inlet on one side of the dust removal shell and an air outlet on the other side, multiple partitions vertically arranged inside the dust removal shell, a screen horizontally arranged below the partitions, the multiple partitions forming a baffle channel, a bottom discharge port at the bottom of the dust removal shell, and the screen located above the bottom discharge port.

[0015] Preferably, the dust collector housing has an upper cylindrical shell structure and a lower conical shell structure, and the screen is a circular structure located at the connection between the cylindrical shell and the conical shell.

[0016] Preferably, the dust collector housing is detachably connected to a cover plate.

[0017] Preferably, for every two adjacent partitions, the top of one partition contacts the bottom of the cover plate, and the bottom of the other partition contacts the upper surface of the screen.

[0018] Preferably, the side wall area of ​​the dust collector housing corresponding to the screen is provided with a side cleaning port, and the side cleaning port is detachably connected to the maintenance door.

[0019] Preferably, a drain valve is provided at the bottom discharge port.

[0020] Preferably, the air inlet is connected to an air inlet pipeline, and an air inlet flow control valve is provided on the air inlet pipeline.

[0021] Preferably, a flange is provided at the air inlet position, which is connected to the flange at the end of the air inlet pipeline by bolts.

[0022] Preferably, the air outlet is connected to an air outlet pipeline, and the air outlet pipeline is equipped with an air flow control valve.

[0023] Preferably, a flange is provided at the air outlet position, which is connected to the flange at the end of the air outlet pipeline by bolts.

[0024] The beneficial effects of this utility model are: This utility model can remove dust with hygroscopic characteristics, reduce the accumulation of materials in the dust extraction pipeline, and intercept dust in the small dust removal equipment as much as possible, thus ensuring the normal operation of the dust extraction pipeline. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a small-scale pipeline dust removal device used in fertilizer production processes. Figure 2 for Figure 1 A top view of the internal structure of the dust collector casing. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 and 2 As shown, a small-scale pipeline dust removal device for fertilizer production includes a dust removal shell 1. The dust removal shell 1 has an air inlet 2 on one side and an air outlet 3 on the other side. Multiple partitions 4 are vertically arranged inside the dust removal shell 1, and a screen 5 is horizontally arranged below the partitions 4. The multiple partitions 4 form a baffle channel 6. The bottom of the dust removal shell 1 has a bottom discharge port 7, and the screen 5 is located above the bottom discharge port 7.

[0028] Preferably, the dust removal shell 1 has a cylindrical shell structure on the upper part and a conical shell structure on the lower part, and the screen 5 has a circular structure and is located at the connection between the cylindrical shell and the conical shell.

[0029] Preferably, the dust collector housing 1 is detachably connected to a cover plate 8. By providing a detachable cover plate 8, the dust collector can be cleaned simply by opening the cover plate 8.

[0030] Preferably, for every two adjacent partitions 4, the top of one partition 4 contacts the bottom of the cover plate 8, and the bottom of the other partition 4 contacts the upper surface of the screen 5.

[0031] Preferably, the side wall area of ​​the dust collector housing 1 corresponding to the screen 5 is provided with a side cleaning port 9, which is detachably connected to the inspection door 10. With this design, when it is necessary to clean the impurities intercepted by the screen 6, the cleaning process can be conveniently carried out by simply opening the inspection door 10.

[0032] Preferably, a drain valve 7.1 is provided at the bottom discharge port 7. During the dust removal process, the drain valve 7.1 is in the closed state. When it is necessary to remove the dust, impurities or moisture accumulated in the conical shell area of ​​the dust removal housing 1, the drain valve 7.1 can be opened directly to carry out the drainage process.

[0033] Preferably, the air inlet 2 is connected to the air inlet pipeline 2.1, and the air inlet pipeline 2.1 is equipped with an air inlet flow control valve 2.2.

[0034] Preferably, a flange is provided at the air inlet 2, which is bolted to the flange at the end of the air inlet pipeline 2.1. The flange facilitates the assembly and disassembly process.

[0035] Preferably, the air outlet 3 is connected to the air outlet pipeline 3.1, and the air outlet pipeline 3.1 is equipped with an air flow control valve 3.2.

[0036] Preferably, a flange is provided at the air outlet 3, which is bolted to the flange at the end of the air outlet pipeline 3.1. The flange facilitates the assembly and disassembly process.

[0037] The working principle of this embodiment is as follows: This device is used in the dust extraction ducts of the packaging room. Because the packaging room contains moisture-absorbing dust, this dust is released into the air during the production and packaging process, causing material waste and soiling of the packaged products. It also continuously adheres to the equipment in the packaging room, increasing equipment failure rates. Furthermore, over time, a large amount of dust adheres to the inner wall of the dust extraction ducts, eventually causing blockage and loss of dust extraction function. Therefore, to avoid material waste and dust blockage, a new device is added at the beginning of the main duct after all the dust extraction branch ducts converge, as shown in the attached diagram. Figure 1 The small-scale duct dust collector shown has airflow entering through inlet 2. Three vertical baffles 4 divide the outer casing 1 into four interconnected chambers. To ensure consistent flow area across the four chambers, the distance d1 between the side baffles and the outer wall is slightly larger than the distance d2 between the inner baffles. The airflow undergoes a total of eight flow direction changes within the four chambers. Utilizing the principle of inertial dust collection, most of the dust in the airflow is intercepted. The intercepted dust then passes through the lower chambers. The square screen 5, submerged in the conical section, serves two purposes: firstly, it prevents the airflow from carrying away the intercepted dust again; secondly, it intercepts large particles that may clump due to moisture absorption, preventing them from falling into the conical section and clogging the bottom discharge port 7 (the drain valve 7.1 of the bottom discharge port 7 is closed during use). Furthermore, the baffle 4 itself also acts as a condenser; when the dust contains excessive moisture, the moisture condenses and accumulates upon contact with the baffle 4, flowing downwards and eventually accumulating at the bottom of the dust collector housing 1. In practical application, an airflow control valve 3.2 is added to the outlet pipeline of the dust collector to adjust the airflow rate. This allows for adjustment of the airflow rate according to the needs of the dust extraction pipeline, ensuring effective dust extraction while controlling the airflow and velocity. This ensures that most of the dust is intercepted, reducing the possibility of dust entering the downstream pipeline and thus mitigating frequent blockages in the main dust extraction pipeline. Additionally, when cleaning is required, the air flow control valve 3.2 of the dust collector can be closed, and the drain valve 7.1 of the bottom discharge port 7 can be opened to discharge the dust deposited in the cone section. When the dust collector needs to be thoroughly cleaned due to long-term use, the inspection door 10 of the side cleaning port and the top cover plate 8 can be opened to thoroughly clean the inside of the dust collector.

[0038] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A small pipeline dust removal device for fertilizer production process, comprising a dust removal shell (1), one side of which is provided with an air inlet (2), and the other side is provided with an air outlet (3), characterized in that: The dust collector housing (1) is vertically provided with multiple partitions (4), and a screen (5) is horizontally provided below the partitions (4). The multiple partitions (4) form a baffle channel (6). The bottom of the dust collector housing (1) is provided with a bottom discharge port (7), and the screen (5) is located above the bottom discharge port (7).

2. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: The dust collector shell (1) has a cylindrical shell structure on the upper part and a conical shell structure on the lower part. The screen (5) has a circular structure and is located at the connection between the cylindrical shell and the conical shell.

3. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: The dust collector housing (1) is detachably connected to a cover plate (8).

4. A compact duct dedusting device for fertilizer production process according to claim 3, characterized in that: For each pair of adjacent partitions (4), the top of one partition (4) contacts the bottom of the cover plate (8), and the bottom of the other partition (4) contacts the upper surface of the screen (5).

5. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: The side wall area of ​​the dust collector housing (1) corresponding to the screen (5) is provided with a side cleaning port (9), and the side cleaning port (9) is detachably connected to the inspection door (10).

6. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: A drain valve (7.1) is provided at the bottom discharge port (7).

7. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: The air inlet (2) is connected to the air inlet pipeline (2.1), and the air inlet pipeline (2.1) is equipped with an air inlet flow control valve (2.2).

8. A compact duct dedusting device for fertilizer production process according to claim 7, characterized in that: The air inlet (2) is provided with a flange, which is bolted to the flange at the end of the air inlet pipeline (2.1).

9. A compact duct dedusting device for fertilizer production process according to claim 1, characterized in that: The air outlet (3) is connected to the air outlet pipeline (3.1), and the air outlet pipeline (3.1) is equipped with an air flow control valve (3.2).

10. A compact duct dedusting device for fertilizer production processes according to claim 9, characterized in that: A flange is provided at the air outlet (3), which is bolted to the flange at the end of the air outlet pipeline (3.1).

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