Low-resistance efficient cyclone dust collector

Abstract

A low-resistance efficient cyclone dust collector comprises a shell, a lower conical hopper, an air inlet pipe and an exhaust pipe, the air inlet pipe is arranged on the upper portion of the side wall of the shell, the exhaust pipe is arranged in the center of the top face of the shell and extends into the shell, a grating exhaust device is arranged on the side wall of the exhaust pipe in the shell, an exhaust outlet is formed in the bottom of the exhaust pipe, and the lower conical hopper is arranged in the shell. A flow guide cone is arranged in the shell, and an ash discharge port is formed in the bottom of the lower cone hopper. According to the utility model, the grid exhaust device is arranged on the exhaust pipe, so that a part of flue gas is exhausted from the side part through the grid exhaust device, the flue gas speed is reduced, the flue gas resistance is reduced, and the flue gas is guided through the flue gas guide cone, so that the flue dust separation is realized, and the dust removal efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial dust removal equipment technology, and in particular to a low-resistance, high-efficiency cyclone dust collector. Background Technology

[0002] Cyclone dust collectors, commonly used gas-solid separation equipment in industrial fields, work by utilizing the centrifugal force generated by the rotation of airflow to separate dust particles from the dust-laden airflow. In existing technologies, traditional cyclone dust collectors typically employ a tangential inlet structure. The dust-laden gas enters tangentially from the side of the dust collector cylinder, forming a downward spiral flow inside the cylinder. Under the action of centrifugal force, dust particles are thrown against the cylinder wall and slide down the wall to the ash hopper for separation. The purified gas then forms an upward spiral flow inside the cylinder and is discharged from the top exhaust pipe.

[0003] However, existing cyclone dust collectors still have many drawbacks in practical applications. On the one hand, there is energy loss between the outer and inner swirls in traditional cyclone dust collectors, and the airflow needs to overcome significant resistance during rotation, resulting in high energy consumption during equipment operation. On the other hand, existing cyclone dust collectors use a tangential air intake structure, which causes uneven airflow distribution entering the dust collector and generates significant local eddies. This not only reduces dust removal efficiency and makes it difficult to effectively separate some fine dust, but also accelerates internal wear and shortens the equipment's service life. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems by proposing a low-resistance, high-efficiency cyclone dust collector.

[0005] To achieve the above objectives, the following technical solution was adopted:

[0006] A low-resistance, high-efficiency cyclone dust collector includes a shell, a lower cone hopper, an inlet pipe, and an outlet pipe. The inlet pipe is located on the upper part of the side wall of the shell, and the outlet pipe is located at the center of the top surface of the shell. The outlet pipe extends into the interior of the shell. A grid exhaust device is provided on the side wall of the outlet pipe inside the shell. An exhaust port is provided at the bottom of the outlet pipe. A guide cone is provided inside the shell, and a dust discharge port is provided at the bottom of the lower cone hopper.

[0007] Preferably, the height of the exhaust vent is not higher than that of the intake duct.

[0008] Preferably, the grille exhaust device includes notches evenly distributed on the side wall of the exhaust pipe, and the notches are provided with guide plates.

[0009] Preferably, the guide vanes are arranged in the direction of airflow.

[0010] Preferably, a support member is provided at the connection between the shell and the lower cone, and the guide cone is located in the middle of the support member.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By utilizing the rotational motion of the airflow in the cyclone dust collector, a negative pressure zone is formed in the exhaust pipe extending into the shell. A grid exhaust device is installed on the inner wall of the exhaust pipe. By creating a gap, some high-speed flue gas is discharged from the gap under the influence of the negative pressure zone, which reduces the airflow through the outlet pipe, lowers the velocity of the remaining flue gas, reduces the flow resistance of the flue gas, and lowers the operating energy consumption of the cyclone dust collector.

[0013] The guide cone set at the connection between the shell and the lower cone increases the centrifugal force of dust in the flue gas, significantly improving the separation effect of airflow and dust, and improving dust removal efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the low-resistance, high-efficiency cyclone dust collector according to an embodiment of the present utility model;

[0015] Figure 2 This is a top view of the low-resistance, high-efficiency cyclone dust collector according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the grid exhaust device structure of the low-resistance high-efficiency cyclone dust collector according to an embodiment of the present utility model; Detailed Implementation

[0017] The following describes a low-resistance, high-efficiency cyclone dust collector according to the present invention, with reference to the accompanying drawings.

[0018] As shown in Figures 1 to 3, a low-resistance, high-efficiency cyclone dust collector includes a shell 1, a lower cone 2, an inlet pipe 3, and an exhaust pipe 4. The shell 1 and the lower cone 2 constitute the main body of the equipment, providing a space for treating dust-laden gas. The inlet pipe 3 is located on the upper part of the side wall of the shell 1, guiding the dust-laden gas to enter tangentially, so that the airflow forms a rotating external vortex inside the shell 1.

[0019] The exhaust pipe 4 is located at the center of the top surface of the housing 1 and extends into the housing 1. The exhaust pipe 4 has a grille exhaust device 5 on its side wall and an exhaust port 41 at the bottom. The exhaust pipe 4 extends into the housing 1 and is located at the center of the top surface to facilitate the discharge of purified gas. The grille exhaust device 5 on its side wall can discharge some high-speed flue gas, reduce the airflow speed of the remaining flue gas, and reduce airflow resistance. The bottom exhaust port 41 facilitates the concentrated discharge of the internal swirling gas.

[0020] The shell 1 is equipped with a guide cone 6 inside. The guide cone 6 inside the shell 1 is smaller at the top and larger at the bottom, which can guide the airflow, optimize the flow field, reduce local eddies, and enhance the centrifugal separation effect. The bottom of the lower cone hopper 2 is equipped with a ash discharge port 7, which is used to discharge the separated dust from the cyclone dust collector.

[0021] During operation, flue gas enters through the inlet pipe 3. Under centrifugal force, the dust is thrown against the wall of the casing 1. Due to the formation of the internal and external swirling airflow, a negative pressure zone is formed inside the exhaust pipe 4. A portion of the flue gas is drawn into the exhaust pipe 4, reducing the amount and velocity of the remaining flue gas. This avoids the probability of dust being carried to the bottom exhaust port 41. Under the action of the initial high wind speed, the dust is quickly thrown downwards and moves rapidly. After being guided by the guide cone 6, the dust is separated, achieving efficient gas-solid separation, reducing equipment resistance, preventing dust from being adsorbed and discharged by the high-speed airflow, and improving dust removal efficiency and equipment operation stability. The separated dust falls into the ash discharge port 7 under the influence of gravity, and the pure gas forms an internal swirling airflow, which is discharged from the exhaust port 41 at the bottom of the exhaust pipe 4.

[0022] As shown in Figure 1, the height of the exhaust vent 41 is no higher than that of the inlet duct 3. This provides sufficient space and time for the flue gas to form a complete spiral outer and inner swirling flow, ensuring that after the flue gas enters the equipment, the dust is fully thrown towards the inner wall of the casing 1 under the action of centrifugal force, thus avoiding gas short-circuiting.

[0023] As shown in Figures 1 and 3, the grille exhaust device 5 includes notches 51 evenly distributed on the side wall of the exhaust pipe 4, and a guide plate 52 is provided on the notches 51. The notches 51 evenly distributed on the side wall of the exhaust pipe 4 provide a path for the flue gas to enter the exhaust pipe 4. The negative pressure zone in the exhaust pipe 4 draws the high-speed rotating flue gas into the exhaust pipe 4, reducing the amount of flue gas in the housing 1, reducing the flow velocity of the remaining flue gas, and reducing the flue gas resistance. The guide plate 52 can block the notches 51 and intercept the dust particles close to the notches 51.

[0024] As shown in Figure 2, the guide plates 52 are arranged in the direction of airflow. The guide plates 52 are arranged at an angle along the rotation direction of the outward swirling airflow, forming a "guide channel" consistent with the airflow trajectory. When the flue gas flows through the gap 51, the guide plates 52 force the airflow to continue to deflect in the outward swirling direction along the plate surface. Since the dust particles are already inclined to the wall of the shell 1 due to centrifugal force, the guide plates 52 arranged in the direction of flow further "propelled" the dust particles outward, making it difficult for them to enter the gap 51. When the negative pressure zone inside the exhaust pipe 4 draws gas in through the gap 51, the guide plates 52 arranged in the direction of flow form a "streamline barrier" at the gap 51, blocking the dust particles from entering the gap 51.

[0025] As shown in Figure 1, a support member 61 is provided at the connection between the shell 1 and the lower cone hopper 2, and the guide cone 6 is positioned in the middle of the support member 61. By centrally mounting the guide cone 6 on the support member 61, the flue gas is uniformly and orderly guided before flowing into the lower cone hopper 2. When the airflow flows along the curved surface of the guide cone 6, the originally turbulent airflow state is improved, and the entire flow field distribution becomes more reasonable and smooth. Under these conditions, dust particles can be more fully subjected to centrifugal force, thereby effectively improving the efficiency of gas-solid separation. Furthermore, the stable support structure ensures that the guide cone 6 remains in place even under strong airflow impact, avoiding increased airflow disturbance caused by shaking or displacement, reducing unnecessary local resistance, allowing the equipment to operate stably at all times, and ensuring a more effective dust removal.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Those skilled in the art may find other optimizations and additional functions in this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A low-resistance, high-efficiency cyclone dust collector, comprising a shell (1), a lower cone hopper (2), an inlet pipe (3), and an exhaust pipe (4), wherein the inlet pipe (3) is disposed on the upper part of the side wall of the shell (1), and the exhaust pipe (4) is disposed at the center of the top surface of the shell (1), characterized in that: The exhaust pipe (4) extends into the interior of the housing (1). The exhaust pipe (4) inside the housing (1) is provided with a grid exhaust device (5) on its side wall. The exhaust pipe (4) is provided with an exhaust port (41) at its bottom. The housing (1) is provided with a guide cone (6). The bottom of the lower cone hopper (2) is provided with a ash discharge port (7).

2. The low-resistance, high-efficiency cyclone dust collector as described in claim 1, characterized in that: The height of the exhaust vent (41) is not higher than that of the air inlet pipe (3).

3. The low-resistance, high-efficiency cyclone dust collector as described in claim 1, characterized in that: The grille exhaust device (5) includes notches (51) evenly distributed on the side wall of the exhaust pipe, and a guide plate (52) is provided on the notches (51).

4. The low-resistance, high-efficiency cyclone dust collector as described in claim 3, characterized in that: The guide plate (52) is arranged in the direction of airflow.

5. The low-resistance, high-efficiency cyclone dust collector as described in claim 1, characterized in that: The connection between the shell (1) and the lower cone (2) is provided with a support member (61), and the guide cone (6) is located in the middle of the support member (61).

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