Air inlet distribution structure for a deduster

Abstract

The application relates to an air inlet distribution structure of a deduster, and relates to the technical field of dedusting devices. The air inlet distribution structure comprises a powder-air separation bin and an air inlet pipe connected to the air inlet of the powder-air separation bin. The powder-air separation bin comprises a first intermediate bin, a second intermediate bin and a third intermediate bin which are sequentially sleeved from outside to inside. The intervals among the first intermediate bin, the second intermediate bin and the third intermediate bin are equal. The air inlet pipe comprises a head pipe and a tail pipe which are in communication with each other. The tail pipe is in communication with the powder-air separation bin at the other end. The tail pipe comprises a first pipe, a second pipe and a third pipe which are sequentially sleeved. The first pipe, the second pipe and the third pipe are in communication with the first intermediate bin, the second intermediate bin and the third intermediate bin respectively. A cyclone grading mechanism is arranged in the head pipe. The application can distribute the powder-containing gas to be introduced into the deduster according to the different mass of powder particles in the gas. The quality of the exhaust gas of the deduster is improved, and the dedusting efficiency of the deduster is also improved.

Description

Technical Field

[0001] This application relates to the field of dust removal device technology, and in particular to a dust removal device air inlet distribution structure. Background Technology

[0002] A dust collector, as the name suggests, is an industrial device used to remove powders, dust, and particulate matter. It is widely used in processes requiring surface cleaning, recovery of valuable powders, or improvement of the working environment. Its core purpose is to achieve gas-solid separation, that is, to separate solid particles carried by airflow from the air. In summary, dust collectors are key equipment in modern industrial production for improving product quality, achieving automation, and maintaining environmental cleanliness, and have become indispensable purification equipment for various manufacturing enterprises.

[0003] However, existing dust collectors still have significant drawbacks. When gas enters the dust collector, it always flows in streams, forming an airflow. During the dust removal process, dust particles trapped within the airflow are difficult to completely remove, resulting in poor dust removal efficiency. While existing cyclone separators can use centrifugal force to direct dust particles tangentially into the dust collector, the varying mass of dust particles in different dust-containing gases means that the equipment cannot be adapted to every dust-containing gas during operation. Utility Model Content

[0004] In order to optimize the structure of the dust collector so that dust-containing gases of different compositions can be completely separated, this application provides a dust collector inlet distribution structure.

[0005] The dust collector inlet distribution structure provided in this application adopts the following technical solution: A dust collector air inlet distribution structure includes a dust-gas separation chamber and an air inlet pipe connected to the air inlet of the dust-gas separation chamber. The dust-gas separation chamber includes a first intermediate chamber, a second intermediate chamber, and a third intermediate chamber nested from the outside to the inside, with equal spacing between them. The air inlet pipe includes a head pipe and a tail pipe that are interconnected. The other end of the tail pipe is connected to the dust-gas separation chamber. The tail pipe includes a first pipe, a second pipe, and a third pipe nested from each other. The first pipe, the second pipe, and the third pipe are respectively connected to the first intermediate chamber, the second intermediate chamber, and the third intermediate chamber. A cyclone classifying mechanism is provided in the head pipe for classifying the dust-containing gas flowing through the head pipe and blowing it into the first pipe, the second pipe, and the third pipe respectively.

[0006] Optionally, the cyclone grading mechanism includes a first spiral tube, a second spiral tube, and a third spiral tube that are nested together and respectively connected to a motor. The inner sides of the first spiral tube, the second spiral tube, and the third spiral tube are all provided with spiral grooves. The first spiral tube, the second spiral tube, and the third spiral tube all rotate along the axis with their rotation speeds decreasing sequentially. The spiral grooves of the first spiral tube, the second spiral tube, and the third spiral tube are all provided with several through holes spaced apart along the extension direction. An air inlet pipe is provided in the third spiral tube along the axis, and the air inlet pipe is provided with several air holes in the circumferential direction.

[0007] Optionally, the rotation directions of two adjacent spiral tubes among the first spiral tube, the second spiral tube, and the third spiral tube are opposite.

[0008] Optionally, the first pipe, the second pipe, and the third pipe are each provided with a compression guide ring at one end near the powder-gas separation chamber to bring the gas close to the chamber wall. The compression guide ring includes an oblique ring with a width greater than or equal to that of the first pipe, the second pipe, or the third pipe, and a plurality of connecting columns circumferentially connected between the oblique ring and the first pipe, the second pipe, or the third pipe. An included angle is provided between the oblique ring and the end face of the first pipe, the second pipe, or the third pipe.

[0009] Optionally, the oblique ring has an arc-shaped structure on the side closest to the first pipe, the second pipe, and the third pipe.

[0010] Optionally, the first pipe, the second pipe, and the third pipe are each equipped with a plurality of accelerating stirring fans for accelerating the flow rate of the separated gas. The accelerating stirring fans are located in the first pipe, the second pipe, and the third pipe near the air inlet of the powder-gas separation chamber.

[0011] In summary, this application includes at least one of the following beneficial technical effects: This application can separate the powder-containing gas entering the dust collector into multiple layers, thereby enabling the dust collector to process the powder-containing gas more efficiently while also improving the powder collection efficiency and the cleanliness of the gas discharged from the dust collector by differentiating the powder-containing gas. This application can drive the powder-containing gas to move in a spiral manner, thereby effectively reducing the number of powder particles accumulated per unit area on a horizontal plane, making it easier to separate the powder particles from the gas and to facilitate the aggregation and sedimentation of the powder particles. Attached Figure Description

[0012] Figure 1 This is an overall half-sectional view of the air inlet distribution structure of a dust collector according to this application.

[0013] Figure 2 yes Figure 1 A magnified view of point A in the middle.

[0014] Figure 3 This is a partial view of the tail section of the air inlet pipe of an air inlet distribution structure for a dust collector according to this application.

[0015] Explanation of reference numerals in the attached diagram: 1. Powder-gas separation chamber; 11. First intermediate chamber; 12. Second intermediate chamber; 13. Third intermediate chamber; 2. Air inlet pipe; 21. Head pipe; 22. Tail pipe; 221. First pipe; 222. Second pipe; 223. Third pipe; 3. Cyclone classifier; 31. First spiral tube; 32. Second spiral tube; 33. Third spiral tube; 34. Spiral groove; 341. Through hole; 35. Air inlet pipe; 351. Air hole; 4. Compression guide ring; 41. Angled ring; 42. Connecting column; 5. Accelerating stirring fan. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0017] This application discloses an air inlet distribution structure for a dust collector.

[0018] Reference Figure 1 A dust collector air intake distribution structure includes a dust-gas separation chamber 1 and an air intake pipe 2 connected to the air intake of the dust-gas separation chamber 1. The dust-gas separation chamber 1 specifically includes a first intermediate chamber 11, a second intermediate chamber 12, and a third intermediate chamber 13, which are sequentially nested from the outside to the inside, and the intervals between the first intermediate chamber 11, the second intermediate chamber 12, and the third intermediate chamber 13 are equal. The air intake pipe 2 includes a head pipe 21 and a tail pipe 22 that are interconnected, with the other end of the tail pipe 22 connected to the air intake of the dust-gas separation chamber 1. When the dust collector is working, the dust-containing gas, after being classified, passes through the air intake pipe 2 and enters the first intermediate chamber 11, the second intermediate chamber 12, and the third intermediate chamber 13 respectively.

[0019] Since the powder particles distributed in the first intermediate chamber 11, the second intermediate chamber 12, and the third intermediate chamber 13 have different masses and airflow velocities, the powder particles in the powder-containing gas in each intermediate chamber can be completely settled, resulting in a higher degree of gas purification.

[0020] Furthermore, the tail pipe 22 specifically includes a first pipe 221, a second pipe 222, and a third pipe 223 connected in sequence, and the first pipe 221, the second pipe 222, and the third pipe 223 are respectively connected to the first intermediate chamber 11, the second intermediate chamber 12, and the third intermediate chamber 13. A cyclone classifying mechanism 3 is installed inside the head pipe 21, which classifies the powder-containing gas flowing through the head pipe 21 according to the mass of the powder particles, and then sequentially blows the classified powder-containing gas into the first pipe 221, the second pipe 222, and the third pipe 223. The cyclone classifying mechanism 3 uses a spiral movement of the gas and the effect of centrifugal force to classify the particulate gas according to the different masses of the powder particles within it.

[0021] Reference Figure 2 Specifically, the cyclone grading mechanism 3 includes a first spiral tube 31, a second spiral tube 32, and a third spiral tube 33 that are nested together. Each of the three spiral tubes is connected to a motor for driving its rotation, and the rotational speeds of the three motors driving the first spiral tube 31, the second spiral tube 32, and the third spiral tube 33 along their axes decrease sequentially. Spiral grooves 34 are formed on the inner sides of each of the three spiral tubes 31, the second spiral tube 32, and the third spiral tube 33, with several through holes 341 extending through the bottom of each spiral groove 34 along its extension direction.

[0022] The third spiral tube 33 is located at the innermost side. When the particulate gas enters the third spiral tube 33, the powder particles will adhere to the tube wall and move along the spiral groove 34 under the action of centrifugal force. At this time, since the bottom of the spiral groove 34 has a through hole 341, the larger powder particles will pass through the through hole 341 due to the greater centrifugal force and enter the spiral groove 34 of the second spiral tube 32 and the third spiral tube 33 in sequence.

[0023] During the above process, because the spiral tube has a spiral groove 34 inside, when the spiral tube rotates, the spiral groove 34 will also give the air inside a spiral force, changing the flow state of the gas.

[0024] Furthermore, an air inlet pipe 35 is provided inside the third spiral tube 33 along its axis, and several air holes 351 are circumferentially opened on the air inlet pipe 35. The particulate gas enters from the air inlet pipe 35, and then smoothly enters the third spiral tube 33 through the air holes 351, which can ensure that all gases are classified and de-powdered.

[0025] Reference Figure 2Preferably, in the first spiral tube 31, the second spiral tube 32, and the third spiral tube 33, the rotation directions of adjacent spiral tubes are opposite. This design allows the powder particles to accumulate as much as possible in the spiral groove 34 during the process of moving from the third spiral tube 33 to the second spiral tube 32 or from the second spiral tube 32 to the first spiral tube 31, ensuring that the powder particles are distributed as evenly as possible during the grading process, and also improving the powder particle collection efficiency.

[0026] Reference Figure 3 Each of the first pipe 221, the second pipe 222, and the third pipe 223 has a compression guide ring 4 near one end of the gas-powder separation chamber 1. The compression guide ring 4 specifically includes an inclined ring 41 with a width greater than or equal to that of the first pipe 221, the second pipe 222, or the third pipe 223, and several connecting posts 42 circumferentially connected between the inclined ring 41 and the first pipe 221, the second pipe 222, or the third pipe 223. The lower plane of the inclined ring 41 forms an angle with the end face of the first pipe 221, the second pipe 222, or the third pipe 223, which prevents the gas containing powder from being directly blown into the gas-powder separation chamber 1 and compresses the gas into a sheet with a smaller cross-sectional area. This not only increases the flow rate of the gas containing powder, improving the powder removal efficiency, but the thinner cross-sectional area also helps disperse the powder particles and achieve faster sedimentation.

[0027] Preferably, the oblique ring 41 has an arc-shaped structure on the side near the first pipe 221, the second pipe 222, and the third pipe 223. The arc-shaped structure allows the powder-containing gas to change direction more smoothly when passing through the compression guide ring 4, thus avoiding excessive obstruction to the normal flow of the powder-containing gas.

[0028] Reference Figure 2 and Figure 3 Furthermore, the first pipe 221, the second pipe 222, and the third pipe 223 are each equipped with several accelerating stirring fans 5 at one end near the powder-gas separation chamber 1 to accelerate the flow rate of the separated gas. The accelerating stirring fans 5 are aligned with the spiral direction of the powder-containing gas, which can accelerate the powder-containing gas and improve the efficiency of the powder remover in handling the powder-containing gas.

[0029] The implementation principle of a dust collector inlet distribution structure in this application is as follows: This application utilizes centrifugal force at the air inlet of the dust collector to classify the dust-containing gas before it enters the dust-gas separation chamber 1. Gases containing dust particles of different masses are sequentially introduced into the first pipe 221, the second pipe 222, and the third pipe 223, causing the dust-containing gas to move in a spiral motion. This not only differentiates the dust-containing gas, allowing the dust particles to settle more quickly, but also significantly improves the cleanliness of the final air output from the dust collector.

[0030] In this process, by designing the compression guide ring 4, the cross-sectional area of ​​the powder-containing gas on the radial surface of the powder-gas separation chamber 1 can be reduced, which helps to separate the powder particles and the gas more thoroughly.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dust collector air inlet distribution structure, comprising a dust-gas separation chamber (1) and an air inlet pipe (2) connected to the air inlet of the dust-gas separation chamber (1), characterized in that: The powder-gas separation chamber (1) includes a first intermediate chamber (11), a second intermediate chamber (12), and a third intermediate chamber (13) sequentially nested from the outside to the inside. The intervals between the first intermediate chamber (11), the second intermediate chamber (12), and the third intermediate chamber (13) are equal. The air inlet pipe (2) includes a head pipe (21) and a tail pipe (22) that are interconnected. The other end of the tail pipe (22) is connected to the powder-gas separation chamber (1). The tail pipe (22) includes a first pipe (221), a second pipe (222), and a third intermediate chamber (13) sequentially nested. Pipe (222) and third pipe (223), the first pipe (221), the second pipe (222) and the third pipe (223) are respectively connected to the first intermediate chamber (11), the second intermediate chamber (12) and the third intermediate chamber (13), and a cyclone grading mechanism (3) is provided in the head pipe (21) to grade the powder-containing gas flowing through the head pipe (21) and blow it into the first pipe (221), the second pipe (222) and the third pipe (223) respectively.

2. The air inlet distribution structure for a dust collector according to claim 1, characterized in that: The cyclone grading mechanism (3) includes a first spiral tube (31), a second spiral tube (32), and a third spiral tube (33) that are nested together and respectively connected to a motor. The first spiral tube (31), the second spiral tube (32), and the third spiral tube (33) are all provided with spiral grooves (34) on their inner sides. The first spiral tube (31), the second spiral tube (32), and the third spiral tube (33) all rotate along the axis and the speed decreases sequentially. The spiral grooves (34) of the first spiral tube (31), the second spiral tube (32), and the third spiral tube (33) are all provided with several through holes (341) spaced apart along the extension direction. The third spiral tube (33) is provided with an air inlet pipe (35) along the axis. The air inlet pipe (35) is provided with several air holes (351) in the circumferential direction.

3. The air inlet distribution structure for a dust collector according to claim 2, characterized in that: The rotation directions of two adjacent spiral tubes among the first spiral tube (31), the second spiral tube (32) and the third spiral tube (33) are opposite.

4. The air inlet distribution structure for a dust collector according to claim 2, characterized in that: The first pipe (221), the second pipe (222), and the third pipe (223) are all provided with a compression guide ring (4) at one end near the powder-gas separation chamber (1) to make the gas adhere to the chamber wall. The compression guide ring (4) includes an oblique ring (41) with a width greater than or equal to that of the first pipe (221), the second pipe (222), or the third pipe (223) and a plurality of connecting columns (42) circumferentially connected between the oblique ring (41) and the first pipe (221), the second pipe (222), or the third pipe (223). An included angle is provided between the oblique ring (41) and the end face of the first pipe (221), the second pipe (222), or the third pipe (223).

5. The air inlet distribution structure for a dust collector according to claim 4, characterized in that: The oblique ring (41) has an arc-shaped structure on the side near the first pipe (221), the second pipe (222) and the third pipe (223).

6. The air inlet distribution structure for a dust collector according to claim 1, characterized in that: The first pipe (221), the second pipe (222) and the third pipe (223) are each equipped with a number of accelerating stirring fans (5) for accelerating the flow rate of the separated gas. The accelerating stirring fans (5) are located in the first pipe (221), the second pipe (222) and the third pipe (223) near the air inlet of the powder-gas separation chamber (1).

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