A double inlet cyclone dust collector structure

Abstract

This utility model relates to the field of cyclone dust removal technology, specifically disclosing a dual-inlet cyclone dust collector structure, including an outer cylinder, which comprises a top cylinder and a conical cylinder connected to the bottom of the top cylinder. An exhaust pipe is installed through the middle of the top cylinder, and a dust discharge valve is fixedly installed at the bottom of the conical cylinder by bolts. Inlet pipes A and B are respectively connected to the two sides of the top cylinder. A spiral guide vane A is integrally formed on the inner wall surface of the top cylinder. This device features dual inlet air intake, increasing the air intake volume. Combined with the spiral guide vane inside the conical cylinder, the airflow forms a more stable rotating flow field after entering the cylinder, reducing the collision between the airflow and the cylinder wall. At the same time, it enhances the centrifugal force, improving the collection efficiency of micron-sized particles. Due to the smooth turning of the guided airflow, turbulence at the bottom of the cylinder can be eliminated. By setting a rotary sealed dust discharge valve at the bottom of the conical cylinder, the accumulated dust is discharged through the rotation of the valve body sealing plate, reducing air leakage at the bottom of the conical cylinder.

Description

Technical Field

[0001] This utility model relates to the field of cyclone dust removal technology, specifically to a dual-inlet cyclone dust collector structure. Background Technology

[0002] In the field of industrial dust control, cyclone dust collectors are widely used in industries such as grain processing, chemicals, building materials, and metallurgy due to their advantages of simple structure, low maintenance costs, and resistance to high temperatures and pressures. However, traditional single-inlet cyclone dust collectors suffer from problems such as limited airflow, uneven airflow distribution, and large fluctuations in separation efficiency. Their performance bottlenecks become increasingly apparent, especially when handling high-concentration, fine-particle dust. The traditional single-inlet design, limited by the cross-sectional area of ​​the inlet channel, struggles to meet the demands of high-flow-rate conditions, resulting in insufficient airflow and an increased risk of dust escape. Simultaneously, the airflow easily forms localized turbulence after entering the cylinder, frequently colliding with the cylinder walls. This not only causes energy loss but also weakens the centrifugal force's ability to capture fine particles, particularly resulting in low separation efficiency for particles between 5 and 20 micrometers, making it difficult to meet increasingly stringent environmental emission standards. In addition, the design of the cone bottom of traditional cyclone dust collectors has defects: when the airflow turns in the cone, it is easy to generate secondary turbulence, which causes the settled dust to be re-entrained into the airflow, forming a "back-mixing" phenomenon, further reducing the separation efficiency; and the ash discharge valve mostly adopts a flap or gravity structure, which has poor sealing performance and an air leakage rate as high as 8%-15%, which not only affects the dust removal efficiency, but also aggravates the wear and tear of the equipment.

[0003] To address the aforementioned issues, while existing technologies have proposed a dual-inlet structure to increase airflow, they have not resolved the core contradiction between airflow stability and energy recovery. Some improvement schemes optimize the flow field by adding guide vanes, but the complexity of the structure leads to increased manufacturing costs. The sealing problem of the ash discharge valve still relies on traditional rubber sealing rings, which are prone to aging and failure, requiring frequent maintenance and urgently needing improvement. Therefore, we propose a dual-inlet cyclone dust collector structure. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model provides a dual-inlet cyclone dust collector structure that can solve the above problems.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A dual-inlet cyclone dust collector structure includes an outer cylinder, which includes a top cylinder and a cone cylinder connected to the bottom of the top cylinder. An exhaust pipe is installed through the middle of the top cylinder, and a ash discharge valve is fixedly installed at the bottom of the cone cylinder by bolts. An air inlet pipe A and an air inlet pipe B are respectively connected to the two sides of the top cylinder. Spiral guide vanes A are integrally formed on the inner wall surfaces of the top cylinder and the cone cylinder.

[0006] Furthermore, both air inlet pipe A and air inlet pipe B are obliquely placed on the outer surface of the top cylinder, and the air inlet direction of air inlet pipe A and air inlet pipe B are tangent to the spiral direction of spiral guide plate A.

[0007] Furthermore, a spiral guide vane B is integrally formed on the outer surface of the exhaust duct, and the spiral direction of the spiral guide vane B is consistent with the spiral direction of the spiral guide vane A.

[0008] Furthermore, silicon carbide wear-resistant ceramic sheets are adhered to the inner wall of the cone, and the joints of the silicon carbide wear-resistant ceramic sheets are filled with putty.

[0009] Furthermore, the ash discharge valve includes a cylindrical body and a shaft rotatably disposed inside the cylindrical body. Several sealing plates are integrally formed on the circumference of the shaft. The ends of the sealing plates are in close contact with the inner wall of the cylindrical body. A flange connecting cylinder is installed at the top of the cylindrical body. An ash discharge hole is opened at the bottom of the cylindrical body. A motor for driving the shaft to rotate is disposed outside the cylindrical body.

[0010] Furthermore, there are six sealing plates, which are distributed at equal angles on the outside of the shaft.

[0011] The beneficial effects of this utility model are as follows: The device of this application is equipped with dual inlet air intake to increase the air intake volume. Combined with the spiral guide vanes set inside the cone, the airflow forms a more stable rotating flow field after entering the cylinder, reducing the collision between the airflow and the wall of the device. At the same time, it enhances the centrifugal force and improves the collection efficiency of micron particles. Because the airflow is guided to turn smoothly, turbulence at the bottom of the cylinder can be eliminated. By also installing spiral guide vanes on the outer wall of the exhaust duct, some kinetic energy can be recovered and the drag coefficient can be reduced. By installing a rotary sealed ash discharge valve at the bottom of the cone, the accumulated ash is discharged through the rotation of the valve body sealing plate, reducing air leakage at the bottom of the cone. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a structural diagram of a dual-inlet cyclone dust collector. Figure 2 This is a sectional view of the structure of a dual-inlet cyclone dust collector; Figure 3 This is a top view of the structure of a dual-inlet cyclone dust collector; Figure 4 This is a cross-sectional view of the ash discharge valve.

[0015] In the picture: 1. Conical tube; 2. Top tube; 3. Exhaust duct; 4. Inlet duct A; 5. Inlet duct B; 6. Ash discharge valve; 601. Cylindrical body; 602. Flange connecting tube; 603. Shaft; 604. Sealing plate; 7. Silicon carbide wear-resistant ceramic plate; 8. Spiral guide plate B; 9. Spiral guide plate A. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0017] like Figure 1-4 As shown, this utility model discloses a dual-inlet cyclone dust collector structure, including an outer cylinder, the outer cylinder including a top cylinder 2 and a cone cylinder 1 connected to the bottom of the top cylinder 2, an exhaust pipe 3 is provided through the middle of the top cylinder 2, an ash discharge valve 6 is fixedly installed at the bottom of the cone cylinder 1 by bolts, an air inlet pipe A4 and an air inlet pipe B5 are respectively connected to the two sides of the top cylinder 2, and a spiral guide plate A9 is integrally formed on the inner wall surface of the top cylinder 2 and the cone cylinder 1.

[0018] Example 1: Inlet pipes A4 and B5 are obliquely positioned on both sides of the top cylinder 2. The top cylinder 2 and the cone cylinder 1 form an integrally molded spiral guide plate A9 within the dust collector's inner cavity. The air inlet directions of inlet pipes A4 and B5 are tangent to the spiral direction of the spiral guide plate A9, and the angle at which inlet pipes A4 and B5 are obliquely positioned matches the spiral inclination of the spiral guide plate A9, thus guiding the airflow downwards in a spiral motion along the direction of the spiral guide plate A9. The length of the exhaust pipe 3 extending into the dust collector is equal to the overall length of the dust collector. The cone angle of cone 1 is set to 20°, which is 0.8 times that of the cone. The inner cavity of the dust collector is bonded with silicon carbide wear-resistant ceramic plates 7 by high temperature putty, which can improve its service life. Spiral guide plates B8 are also set on the outside of the exhaust pipe 3. Spiral guide plates B8, together with spiral guide plates A9, can reduce kinetic energy loss and reduce the airflow resistance coefficient. The drive motor of the ash discharge valve 6 is powered by the power line and rotates slowly through the controller and reducer controller, driving the shaft 603 to rotate, thereby gradually discharging the accumulated ash at the bottom of cone 1.

[0019] In the preferred technical solution, both air inlet pipe A4 and air inlet pipe B5 are obliquely placed on the outer surface of the top cylinder 2. The air inlet direction of air inlet pipe A4 and air inlet pipe B5 are tangential to the spiral direction of spiral guide plate A9, which facilitates the airflow to contact the spiral guide plate A9 and achieves the effect of diverting airflow and reducing resistance.

[0020] In the preferred technical solution, a spiral guide vane B8 is integrally formed on the outer surface of the exhaust pipe 3. The spiral direction of the spiral guide vane B8 is consistent with the spiral direction of the spiral guide vane A9. The spiral guide vane B8, together with the spiral guide vane A9, can reduce kinetic energy loss and lower the airflow resistance coefficient.

[0021] In the preferred technical solution, silicon carbide wear-resistant ceramic sheets 7 are pasted on the inner wall of the cone 1, and the joints of the silicon carbide wear-resistant ceramic sheets are filled with putty, which can improve the service life of the inner wall of the cone 1.

[0022] In the preferred technical solution, the ash discharge valve 6 includes a cylindrical body 601 and a shaft 603 rotatably disposed inside the cylindrical body 601. Several sealing plates 604 are integrally formed on the circumferential surface of the shaft 603. The ends of the sealing plates 604 are in close contact with the inner wall of the cylindrical body 601. A flange connecting cylinder 602 is installed at the top of the cylindrical body 601. An ash discharge hole is opened at the bottom of the cylindrical body 601. A motor that drives the shaft 603 to rotate is installed outside the cylindrical body 601. There are six sealing plates 604, which are distributed at equal angles outside the shaft 603. The ash is discharged by rotating the valve body sealing plates. The valve body has good sealing during the process, which can reduce the air leakage at the bottom of the cone.

[0023] In practical use, dust-laden airflow is introduced through air inlet pipes A4 and B5. The airflow is guided by spiral guide plate A9 to generate spiral airflow. Due to centrifugal force, particles come into contact with the inner wall of cone 1. Dust gradually accumulates at the bottom of cone 1 and enters between the sealing plates 604 of ash discharge valve 6. Dust-free airflow is discharged upward through exhaust pipe 3. Dust accumulates between the sealing plates 604. The sealing plates 604 are slowly rotated by the motor to adjust their position. When the dust is aligned with the ash discharge hole at the bottom of cylinder 601, the accumulated dust is discharged.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-inlet cyclone dust collector structure, characterized in that, The outer cylinder includes a top cylinder (2) and a cone (1) connected to the bottom of the top cylinder (2). An exhaust pipe (3) is provided through the middle of the top cylinder (2). A ash discharge valve (6) is fixedly installed at the bottom of the cone (1) by bolts. An air inlet pipe A (4) and an air inlet pipe B (5) are respectively connected to the two sides of the top cylinder (2). A spiral guide plate A (9) is integrally formed on the inner wall surface of the top cylinder (2) and the cone (1). The air inlet pipes A (4) and B (5) are both obliquely placed on the outer surface of the top cylinder (2). The air inlet direction of the air inlet pipe A (4) and the air inlet direction of the air inlet pipe B (5) are tangential to the spiral direction of the spiral guide plate A (9). The outer surface of the exhaust pipe (3) is integrally formed with a spiral guide plate B (8), and the spiral direction of the spiral guide plate B (8) is consistent with the spiral direction of the spiral guide plate A (9); The ash discharge valve (6) includes a cylindrical body (601) and a shaft (603) rotatably disposed inside the cylindrical body (601). The shaft (603) has several sealing plates (604) integrally formed on its circumferential surface. The ends of the sealing plates (604) are in close contact with the inner wall of the cylindrical body (601). A flange connecting cylinder (602) is connected to the top of the cylindrical body (601). An ash discharge hole is opened at the bottom of the cylindrical body (601). A motor for driving the shaft (603) to rotate is disposed outside the cylindrical body (601).

2. The structure of a dual-inlet cyclone dust collector according to claim 1, characterized in that, The inner wall of the cone (1) is pasted with silicon carbide wear-resistant ceramic sheets, and the joints of the silicon carbide wear-resistant ceramic sheets are filled with putty.

3. The structure of a dual-inlet cyclone dust collector according to claim 1, characterized in that, The number of the sealing plates (604) is six, and the six sealing plates (604) are distributed at equal angles on the outside of the shaft (603).

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