Eccentric cyclone separator

Abstract

The invention relates to the field of cyclone separators, in particular to an eccentric cyclone separator which comprises a separator body, a flue gas inlet pipe and a center cylinder. The separator main body comprises a cylinder part and a conical cylinder part arranged at the bottom of the cylinder part, the conical cylinder part is narrowed downwards, and a flue gas particle outlet is formed in the bottom of the conical cylinder part; the flue gas inlet pipe is communicated with one side of the top of the cylinder part, and the flue gas inlet pipe is arranged along the tangential direction of the cylinder part; the central cylinder is arranged on the cover plate at the top of the cylinder part in a penetrating manner and extends into the cylinder part; the central cylinder is eccentrically arranged on one side, far away from the flue gas inlet pipe, of the cover plate at the top of the separator main body. The invention has the following advantages: through the eccentrically arranged central cylinder, the interference of the central cylinder on the flue gas flow entering the separator main body from the flue gas inlet is reduced, and the separation efficiency is improved; and moreover, the scouring of flue gas entering from the flue gas inlet to the central cylinder can be reduced, the deformation and abrasion of the central cylinder are avoided, and meanwhile, the cyclone separator adapts to different working conditions by utilizing the gas inlet adjusting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of cyclone separators, in particular to an eccentric cyclone separator. Background Art

[0002] The cyclone separator is an important device in the exhaust system of the hot blast furnace. It is used for gas-solid separation of the exhaust flue gas from the hot blast furnace to reduce the pollution of the exhaust flue gas. The working principle of the cyclone separator is to rely on the rotational movement caused by the tangential introduction of the airflow to make the solid particles with large inertial centrifugal force flung to the outer wall to separate, thereby achieving the purpose of separating the solid particles in the flue gas. During the use of the existing tangential inlet cyclone separator, the flue gas intake airflow is easily disturbed by the central tube in the cyclone separator, resulting in reduced separation efficiency; at the same time, the central tube is easily excessively worn and deformed due to long-term erosion by the flue gas. Summary of the invention

[0003] The object of the present invention is to overcome the disadvantages of the prior art and provide an eccentric cyclone separator.

[0004] The object of the present invention is achieved through the following technical solution: an eccentric cyclone separator, comprising: A separator body, the separator body comprising a cylindrical portion and a conical portion arranged at the bottom of the cylindrical portion, the conical portion narrows downward, and a flue gas particle outlet is arranged at the bottom of the conical portion; a smoke inlet pipe, the smoke inlet pipe being connected to one side of the top of the cylindrical portion, and the smoke inlet pipe being arranged along a tangential direction of the cylindrical portion; A center tube, wherein the center tube is passed through the top cover plate of the cylindrical portion and extends into the cylindrical portion, the center tube is eccentrically arranged with respect to the cylindrical portion, the center tube is eccentrically arranged on the side of the top cover plate of the separator body away from the flue gas inlet pipe, and the center tube is used to discharge the flue gas.

[0005] The present invention sets the central tube away from the central axis of the separator body so that the central tube avoids the flue gas flow entering the separator body, is not easy to interfere with the intake air flow of the flue gas, and avoids affecting the gas-solid separation efficiency. At the same time, the central tube is set on a side away from the flue gas inlet pipe, so that the central tube is away from the flue gas inlet and avoids the central tube being directly eroded by the high-temperature flue gas.

[0006] In some embodiments, an air intake regulating mechanism is provided at the bottom of the central tube, and the air intake regulating mechanism includes an air intake regulating component and a driving mechanism, the air intake regulating component is connected to the bottom of the central tube, the driving mechanism is provided on the separator body, the power output end of the driving mechanism is connected to the air intake regulating component, and the driving mechanism is used to drive the air intake regulating component to adjust its height to adapt to different working conditions. The present invention enables the cyclone separator to adapt to different working conditions through the air intake regulating mechanism.

[0007] In some embodiments, the air intake adjustment component includes an air intake cylinder, the air intake cylinder is slidably sleeved on the bottom of the central cylinder, and the power output end of the driving mechanism is connected to the air intake cylinder. The height adjustment function of the air intake adjustment component is realized by cooperating with the driving mechanism.

[0008] In some embodiments, the driving mechanism includes a telescopic rod and a transmission rod, the telescopic rod is arranged on the top cover plate of the separator body and is located beside the central tube, the telescopic end of the telescopic rod is arranged downward, the telescopic end of the telescopic rod is connected to the top end of the transmission rod, and the bottom end of the transmission rod is connected to the air inlet tube after passing through the top cover plate of the separator body. The telescopic rod is arranged on the top cover plate of the separator body, and the telescopic rod drives the air inlet tube to move through the transmission rod to prevent the telescopic rod from being washed by high-temperature flue gas.

[0009] In some embodiments, a lug plate is provided on the side wall of one end of the central tube located in the separator body, and the transmission rod passes through the lug plate and is slidably connected to the lug plate. By providing the lug plate, the transmission rod is more stable when moving up and down.

[0010] In some embodiments, the air inlet cylinder is provided with a hinged ear, and the bottom end of the transmission rod is hinged to the hinged ear. By providing the hinged ear, a fixed connection between the transmission rod and the air inlet cylinder is avoided, thereby avoiding jamming when the driving mechanism drives the air inlet cylinder to move.

[0011] In some embodiments, the bottom of the air inlet cylinder is narrowed to form a conical structure. By setting the bottom of the air inlet cylinder to be conical, the smoke particles in the inner swirling airflow are reduced from entering the air inlet cylinder.

[0012] In some embodiments, a dust-blocking ring is provided at the bottom of the air inlet cylinder, so as to further reduce the smoke particles brought out by the airflow and improve the smoke separation efficiency.

[0013] In some embodiments, the smoke inlet pipe gradually narrows along the smoke flow direction. The gradually narrowed smoke inlet pipe makes the smoke flow velocity higher when entering the cylindrical part, so that the smoke particles generate greater centrifugal force, thereby improving the smoke separation efficiency.

[0014] The present invention has the following advantages: By arranging the central tube on the side of the cylindrical part away from the smoke inlet pipe, the smoke can avoid the central tube when entering the cylindrical part from the smoke inlet pipe, so as to avoid the central tube interfering with the smoke flow entering the cylindrical part. At the same time, it also avoids the high-temperature smoke flow directly scouring the central tube, and avoids excessive wear or deformation of the central tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the eccentric cyclone separator of the present invention; Figure 2 is a top view of the eccentric cyclone separator of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross section at AA; Figure 4 for Figure 3 Enlarged view of point B in the middle; In the figure: 1, separator body; 11, cylindrical part; 12, conical part; 2, flue gas inlet pipe; 3, central tube; 31, ear plate; 41, telescopic rod; 42, transmission rod; 43, mounting frame; 51, air inlet tube; 511, hinged ear; 512, ash retaining ring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0017] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0018] The working principle of the cyclone separator is to use the centrifugal force generated by the airflow and the gravity of the flue gas particles to separate the solid particles in the flue gas, thereby achieving the separation of the gas-solid two phases.

[0019] After dust-laden flue gas enters the cyclone separator, it forms an external cyclonic airflow that rotates downward. The flue gas particles suspended in the external cyclonic airflow are thrown toward the side wall of the separator under the action of centrifugal force, and fall to the bottom of the separator with the external cyclonic airflow and are discharged.

[0020] After the outward-swirl airflow reaches the bottom of the separator, it is purified and rises to form an inward-swirl airflow, which is discharged through the central tube.

[0021] like Figure 1-Figure 4As shown, an eccentric cyclone separator comprises a separator body 1, a flue gas inlet pipe 2 and a central tube 3; The separator body 1 comprises a cylindrical portion 11 and a conical portion 12 arranged at the bottom of the cylindrical portion 11, the conical portion 12 narrows downward, and a flue gas particle outlet is arranged at the bottom of the conical portion 12; The smoke inlet pipe 2 is connected to one side of the top of the cylindrical portion 11, and the smoke inlet pipe 2 is arranged along the tangent direction of the cylindrical portion 11; The central tube 3 is passed through the cover plate on the top of the cylindrical portion 11 and extends into the cylindrical portion 11. The central tube 3 is eccentrically arranged with respect to the cylindrical portion 11. The central tube 3 is eccentrically arranged on the side of the top cover plate of the separator body 1 away from the flue gas inlet pipe 2. The central tube 3 is used to discharge flue gas.

[0022] Specifically, in the present embodiment, the central tube 3 is eccentrically arranged on a side of the top cover plate of the separator body 1 away from the smoke inlet pipe 2. By arranging the central tube 3 away from the smoke inlet pipe 2, the central tube 3 is prevented from affecting the intake airflow of the smoke inlet pipe 2, thereby improving the smoke separation efficiency. At the same time, the central tube 3 is prevented from being directly washed by the high-temperature smoke entering from the smoke inlet pipe 2, thereby preventing the central tube 3 from being excessively worn or deformed.

[0023] Preferably, an air intake regulating mechanism is provided at the bottom of the central tube 3, and the air intake regulating mechanism includes an air intake regulating component and a driving mechanism. The air intake regulating component is connected to the bottom of the central tube 3, and the driving mechanism is arranged on the separator body 1. The power output end of the driving mechanism is connected to the air intake regulating component, and the driving mechanism is used to drive the air intake regulating component to adjust its own height to adapt to different working conditions.

[0024] When the hot blast furnace is in a lower power condition, the flow rate of the exhaust flue gas is lower. At this time, the rotation speed of the airflow in the separator body 1 is lower, and the central tube 3 requires a lower air intake height to prevent the separated flue gas particles from being re-mixed into the flue gas and discharged; when the hot blast furnace is in a higher power condition, the flow rate of the exhaust flue gas is higher. At this time, the rotation speed of the airflow in the separator body 1 is higher, and the centrifugal force of the flue gas particles is larger. At this time, the higher air intake height of the central tube 3 is conducive to improving the separation efficiency of the flue gas particles.

[0025] Therefore, by controlling the air intake regulating mechanism, the cyclone separator can be raised when the flue gas flow rate is high and lowered when the flue gas flow rate is low, so that the cyclone separator of the hot blast furnace has a higher flue gas particle separation efficiency under various working conditions.

[0026] Preferably, the air intake adjustment component includes an air intake cylinder 51, which is slidably mounted on the bottom of the central cylinder 3, and the power output end of the driving mechanism is connected to the air intake cylinder 51. In this embodiment, by slidably mounting the air intake cylinder 51 on the bottom of the central cylinder 3, the air intake cylinder 51 can slide up and down under the drive of the driving mechanism.

[0027] Preferably, the driving mechanism includes a telescopic rod 41 and a transmission rod 42, the telescopic rod 41 is arranged on the top cover plate of the separator body 1 and is located next to the central tube 3, the telescopic end of the telescopic rod 41 is arranged downward, the telescopic end of the telescopic rod 41 is connected to the top end of the transmission rod 42, and the bottom end of the transmission rod 42 passes through the top cover plate of the separator body 1 and is connected to the air intake tube 51.

[0028] Specifically, in the present embodiment, two driving mechanisms are provided, and the two driving mechanisms are respectively located on both sides of the central tube 3. In some other embodiments, multiple driving mechanisms may also be provided. The transmission rods 42 of the two driving mechanisms in the present embodiment are respectively connected to both sides of the air intake cylinder 51. Two driving mechanisms are provided to jointly drive the air intake cylinder 51 to move, so that the air intake cylinder 51 is evenly stressed and not prone to jamming. In the present embodiment, the telescopic rod 41 is a hydraulic rod. In some other embodiments, the telescopic rod 41 may also be an electric telescopic rod. In the present embodiment, a mounting frame 43 for mounting the telescopic rod 41 is welded on the top cover plate of the separator body 1, and the telescopic rod 41 is connected to the mounting frame 43 by bolts. The telescopic rod 41 is extended and retracted, and the transmission rod is driven to extend and retract, so that the air intake cylinder 51 slides along the central tube 3 in the vertical direction.

[0029] Preferably, a lug plate 31 is provided on the side wall of one end of the central tube 3 located in the separator body 1, and the transmission rod 42 passes through the lug plate 31 and is slidably connected to the lug plate 31. The lug plate 31 guides the up and down movement of the transmission rod 42, so that the transmission rod 42 is more stable when moving.

[0030] Preferably, a hinged ear 511 is provided on the air inlet cylinder 51 , and the bottom end of the transmission rod 42 is hinged to the hinged ear 511 .

[0031] Specifically, in this embodiment, two hinged ears 511 are provided on the air intake cylinder 51, and the two hinged ears 511 are respectively located on both sides of the air intake cylinder 51, and the bottom ends of the transmission rods 42 in the two driving mechanisms are respectively hinged to the two hinged ears 511. By hingedly connecting the transmission rod 42 to the air intake cylinder 51, relative rotation can occur between the air intake cylinder 51 and the transmission rod 42, and it is not easy to get stuck when the air intake cylinder 51 slides up and down.

[0032] Preferably, the bottom of the air inlet cylinder 51 is narrowed to form a conical structure. In this embodiment, the bottom of the air inlet cylinder 51 is contracted to form a conical structure, which can reduce the smoke particles brought out by the inner swirling airflow.

[0033] Preferably, an ash retaining ring 512 is provided at the bottom of the air inlet cylinder 51. The ash retaining ring 512 is provided to reduce the vortex formed at the bottom of the air inlet cylinder 51, thereby preventing the external swirling airflow and the internal swirling airflow at the bottom of the air inlet cylinder 51 from short-circuiting, and preventing the smoke particles in the external swirling airflow from being directly brought into the internal swirling airflow and then entering the air inlet cylinder 51.

[0034] Preferably, the smoke inlet pipe 2 is gradually narrowed along the smoke flow direction. The smoke inlet pipe 2 is gradually narrowed so that the smoke reaches the maximum flow rate when entering the separator body 1. The higher intake speed makes the smoke particles have a greater centrifugal force when forming an external swirling airflow, thereby improving the separation efficiency of the smoke particles.

[0035] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above-mentioned technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. An eccentric cyclone separator, characterized in that: include: A separator body (1), the separator body (1) comprising a cylindrical portion (11) and a conical portion (12) arranged at the bottom of the cylindrical portion (11), the conical portion (12) narrowing downwards, and a flue gas particle outlet being arranged at the bottom of the conical portion (12); a smoke inlet pipe (2), the smoke inlet pipe (2) being in communication with one side of the top of the cylindrical portion (11), the smoke inlet pipe (2) being arranged along a tangential direction of the cylindrical portion (11); A central tube (3), the central tube (3) being inserted through the cover plate at the top of the cylindrical portion (11) and extending into the cylindrical portion (11), the central tube (3) being eccentrically arranged with respect to the cylindrical portion (11), the central tube (3) being eccentrically arranged on a side of the top cover plate of the separator body (1) away from the flue gas inlet pipe (2), and the central tube (3) being used to discharge flue gas.

2. The eccentric cyclone separator according to claim 1, characterized in that: An air intake regulating mechanism is arranged at the bottom of the central tube (3), the air intake regulating mechanism comprising an air intake regulating component and a driving mechanism, the air intake regulating component is communicated with the bottom of the central tube (3), the driving mechanism is arranged on the separator body (1), a power output end of the driving mechanism is connected to the air intake regulating component, and the driving mechanism is used to drive the air intake regulating component to adjust its own height to adapt to different working conditions.

3. An eccentric cyclone separator according to claim 2, characterized in that: The air intake regulating component comprises an air intake cylinder (51), the air intake cylinder (51) is slidably sleeved on the bottom of the central cylinder (3), and the power output end of the driving mechanism is connected to the air intake cylinder (51).

4. The eccentric cyclone separator according to claim 3, characterized in that: The driving mechanism comprises a telescopic rod (41) and a transmission rod (42); the telescopic rod (41) is arranged on the top cover plate of the separator body (1) and is located beside the central tube (3); the telescopic end of the telescopic rod (41) is arranged downward, the telescopic end of the telescopic rod (41) is connected to the top end of the transmission rod (42), and the bottom end of the transmission rod (42) passes through the top cover plate of the separator body (1) and is connected to the air inlet tube (51).

5. The eccentric cyclone separator according to claim 4, characterized in that: An ear plate (31) is provided on the side wall of one end of the central tube (3) located inside the separator body (1), and the transmission rod (42) passes through the ear plate (31) and is slidably connected to the ear plate (31).

6. The eccentric cyclone separator according to claim 4, characterized in that: The air inlet cylinder (51) is provided with a hinged ear (511), and the bottom end of the transmission rod (42) is hinged to the hinged ear (511).

7. The eccentric cyclone separator according to claim 3, characterized in that: The bottom of the air inlet cylinder (51) is narrowed to form a conical cylinder structure.

8. The eccentric cyclone separator according to claim 3, characterized in that: A dust blocking ring (512) is provided at the bottom end of the air intake cylinder (51).

9. The eccentric cyclone separator according to claim 1, characterized in that: The flue gas inlet pipe (2) gradually narrows along the direction of flue gas flow.

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