Efficient cyclone separation system

Abstract

The utility model relates to a cyclone separator, in particular to an efficient cyclone separation system. Comprising a cyclone separator and a secondary dust collection exhaust pipe assembly, the cyclone separator comprises a shell, a gas inlet pipe is arranged on the side wall of the shell, a main exhaust pipe is arranged at the top of the shell, and a dust outlet is formed in the bottom of the shell; the secondary dust collection exhaust pipe assembly is composed of a plurality of gas guide pipes arranged in the pipe wall interlayer of the main exhaust pipe and an annular gas collection pipe connected with the gas guide pipes, and gas guide pipe inlets are formed in the inner wall of the main exhaust pipe; the pipe center line of an inlet of the gas guide pipe and the inner wall of the main exhaust pipe are arranged in the tangential direction and incline upwards, and the opening direction is opposite to the movement direction of circulating gas flow in the cyclone separator. According to the cyclone separator, the characteristic that airflow in the main exhaust pipe of the cyclone separator is high in rotating speed is utilized for secondary dust removal, energy consumption is reduced, space is saved, and meanwhile separation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a cyclone separator, in particular to a high-efficiency cyclone separation system. Background Art

[0002] As a dry gas-solid separation device, a cyclone separator utilizes the centrifugal force generated by the rotating dust-laden gas to effectively separate dust from the airflow. When the dust-laden airflow enters the cyclone at a speed of 12 to 25 m / s, the airflow transitions from linear motion to circular motion. The vast majority of the rotating airflow spirals downward along the wall, gradually moving toward the cone. This is commonly referred to as outward rotation. Cyclone separators offer advantages such as simple structure, easy maintenance, and stable performance, making them widely used in gas-solid and liquid-solid separation.

[0003] However, during the rotation process, the dust-laden gas generates centrifugal force, causing dust particles with a density greater than that of the gas to be flung toward the wall. Once the dust particles come into contact with the wall, they lose their inertial force and, relying on the momentum of the inlet velocity and the downward force of gravity, fall along the wall, eventually entering the dust discharge pipe. When the descending outward-swirl airflow reaches the cone, the conical structure contracts, causing the airflow to gradually approach the center of the dust collector. Based on the principle that the "rotational moment" remains constant, the tangential velocity of the airflow in the cone gradually increases. When the airflow reaches a certain position at the lower end of the cone, it continues to spiral upward from the middle of the cyclone dust collector in the same direction of rotation, i.e., inward-swirl airflow. Finally, the purified gas is discharged from the collector through the exhaust pipe, and some of the uncollected dust particles also escape.

[0004] To more effectively reduce the dust content in purified gas, the current method of connecting two or more cyclone separators in series to perform multi-stage separation of the dust-laden gas is commonly used. However, this approach not only exponentially increases the system's operating energy consumption but also significantly increases the equipment's footprint. Therefore, maintaining or improving dust removal efficiency while reducing energy consumption and saving space has become a pressing technical challenge in this field. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a high-efficiency cyclone separation system, which significantly improves separation efficiency while reducing energy consumption and saving space.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A high-efficiency cyclone separation system comprises a cyclone separator and a secondary dust collection exhaust pipe assembly; the cyclone separator comprises a shell, a gas inlet pipe is provided on the side wall of the shell, a main exhaust pipe is provided on the top of the shell, and a dust discharge port is provided on the bottom of the shell; the secondary dust collection exhaust pipe assembly consists of a plurality of air ducts arranged inside the interlayer of the main exhaust pipe wall, and an annular air collecting pipe connected to the air duct; the air duct inlet is arranged inside the inner wall of the main exhaust pipe, the center line of the air duct at the inlet is arranged tangentially to the inner wall of the main exhaust pipe, and is inclined upward, and the opening direction is opposite to the movement direction of the circulating gas flow in the cyclone separator.

[0008] Furthermore, the annular air collecting pipe is located above the shell of the cyclone separator, and the air guide pipe outlet is connected to the annular air collecting pipe.

[0009] Furthermore, the multiple air duct inlets on the inner wall of the main exhaust pipe are circumferentially arranged at the same level.

[0010] Furthermore, the multiple air duct inlets on the inner wall of the main exhaust pipe are evenly arranged in a circumferential direction at multiple levels.

[0011] Furthermore, the shell is arranged vertically, the upper part is a cylindrical cylinder, the lower part is a conical cylinder, and the dust discharge port is arranged at the bottom end of the conical cylinder.

[0012] Furthermore, the main exhaust pipe is arranged at the top center of the shell, with the lower part located inside the shell and the upper part located outside the shell.

[0013] Furthermore, the annular gas collecting pipe is arranged around the main exhaust pipe and is provided with a gas outlet.

[0014] Furthermore, the gas outlet is connected to a dust removal equipment pipeline.

[0015] Furthermore, the gas outlet is connected to a gas inlet pipe, and a fan is provided on the connected pipe.

[0016] Compared with the prior art, the present invention has at least the following technical effects or advantages:

[0017] 1. The utility model is provided with a secondary dust collection exhaust duct assembly, which consists of a plurality of air ducts evenly arranged inside the interlayer of the main exhaust duct wall, and an annular air collecting duct connected to the air duct and located above the cyclone separator. The air duct inlet is arranged inside the inner wall of the main exhaust duct, and the center line of the air duct at the inlet is arranged tangentially to the inner wall of the main exhaust duct and inclined upward. The opening direction is opposite to the movement direction of the circulating gas flow in the cyclone separator.

[0018] This new system utilizes the high rotational speed of the airflow in the main exhaust pipe of the cyclone separator to perform secondary dust removal, based on the traditional cyclone separator dust removal. This fully utilizes the limited cyclone separator space, improves the gas-solid separation efficiency of the traditional single cyclone separator, reduces the dust concentration in the exhaust gas of the cyclone separation system, and thus significantly improves the dust removal efficiency of the cyclone separation system.

[0019] 2. The gas outlet of the utility model is connected to the dust removal equipment pipeline or the gas inlet pipeline. The high dust concentration gas collected by the annular gas collecting pipe is sent to the subsequent dust removal equipment; or it is transported back to the gas inlet through the fan and re-introduced into the cyclone separator, thereby improving the dust removal efficiency through the circulation dust removal method. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure and process principle of the utility model.

[0021] In the figure: 1-gas inlet pipe 2-shell 3-main exhaust pipe 4-air guide pipe 5-annular gas collecting pipe 6-dust exhaust port 7-gas outlet DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] In the description of the present invention, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0027] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0028] [Example]

[0029] like Figure 1 As shown, a high-efficiency cyclone separation system includes a cyclone separator and a secondary dust collection exhaust pipe assembly.

[0030] The main body of the cyclone separator is the housing 2, which is vertically arranged with a cylindrical upper portion and a conical lower portion. The dust outlet 6 is located at the bottom of the conical shell. The gas inlet pipe 1 is located at the top of the side wall of the cylindrical shell, with the axis of the gas inlet pipe 1 arranged horizontally.

[0031] The main exhaust pipe 3 is arranged at the center of the top surface of the shell 2 and inserted into the shell 2 . The lower part of the main exhaust pipe 3 is located inside the shell 2 , and the upper part of the main exhaust pipe 3 is located outside the shell 2 .

[0032] The secondary dust collection exhaust pipe assembly consists of a plurality of air guide pipes 4 evenly arranged inside the interlayer of the main exhaust pipe wall, and an annular air collecting pipe 5 connected to the air guide pipes 4 and located above the cyclone separator.

[0033] The inlet of the air duct is at the bottom, and the outlet is at the top. The inlet of the air duct is communicated with the interior of the main exhaust pipe 3 , and the outlet of the air duct is communicated with the annular air collecting pipe 5 .

[0034] The air duct inlet is arranged inside the inner wall of the main exhaust pipe. The center line of the air duct inlet is arranged tangentially to the inner wall of the main exhaust pipe and is inclined upward. The opening direction is opposite to the movement direction of the circulating gas flow in the cyclone separator.

[0035] The multiple air duct inlets on the inner wall of the main exhaust pipe are circumferentially arranged at the same level, or the multiple air duct inlets on the inner wall of the main exhaust pipe are circumferentially evenly arranged at multiple levels.

[0036] The annular gas collecting pipe 5 is arranged around the upper part of the main exhaust pipe 3 and is provided with a gas outlet 7. The annular gas collecting pipe 5 is located outside and above the shell 2. Multiple gas duct outlets are connected to the annular gas collecting pipe inlet in a one-to-one correspondence.

[0037] The gas outlet 7 is connected to the dust removal equipment pipeline; or the gas outlet 7 is connected to the gas inlet pipe 1 pipeline, and a fan is provided on the connected pipeline.

[0038] The working principle and working process of this utility model are as follows:

[0039] 1. Dust-laden gas (about 10-25 m / s) enters the cyclone separator housing 2 from the gas inlet pipe 1. Some dust particles carried by the gas are thrown toward the inner wall of the cyclone separator housing 2 under the action of the centrifugal force generated by the gas movement, and move downward under the action of gravity and are discharged from the lower dust outlet 6.

[0040] When the spiraling, descending circulating gas reaches the conical cylinder at the bottom of the cyclone separator housing 2, it converges toward the center of the separator due to the conical contraction. Due to the principle of constant rotational distance, the tangential velocity (rotational speed) of the circulating gas continuously increases, reaching a peak value (approximately 70-120 m / s) near the inlet of the main exhaust pipe 3. Smaller dust particles that are not captured are transported into the main exhaust pipe 3 along with the upward spiraling airflow from the center of the separator and discharged.

[0041] 2. In the main exhaust pipe 3, the dust particles that are not captured are thrown toward the inner wall of the main exhaust pipe 3 under the action of the centrifugal force of high-speed rotation, and flow into the air duct 4 along with a small amount of air flow through multiple air duct 4 inlets arranged on the inner wall of the main exhaust pipe 3.

[0042] 3. The high-dust gas in the air duct 4 is collected through the annular collecting pipe 5 and then transported to the next dust removal section by the fan for further treatment; or it is transported back to the gas inlet pipe 1 by the fan and reintroduced into the cyclone separator, thereby improving the dust removal efficiency through circulating dust removal.

[0043] Simulation results show that the dust content of the exhaust gas from the cyclone separation system can be reduced by over 30%. This utility model utilizes the high rotational speed of the airflow within the cyclone separator's main exhaust pipe (3) to perform secondary dust removal. This fully utilizes the limited cyclone separator space, effectively reducing the dust concentration in the exhaust gas from the cyclone separation system, thereby significantly improving the dust removal efficiency of the cyclone separation system. This utility model not only optimizes the dust removal process but also improves the overall system efficiency.

[0044] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency cyclone separation system, characterized by: Includes cyclone separator and secondary dust collection exhaust pipe assembly; The cyclone separator comprises a shell, a gas inlet pipe is provided on the side wall of the shell, a main exhaust pipe is provided on the top of the shell, and a dust discharge port is provided on the bottom of the shell; The secondary dust collection exhaust pipe assembly is composed of a plurality of air guide pipes arranged inside the interlayer of the main exhaust pipe wall, and an annular air collecting pipe connected to the air guide pipes; The air duct inlet is arranged inside the inner wall of the main exhaust pipe, and the center line of the air duct inlet is arranged tangentially to the inner wall of the main exhaust pipe and is inclined upward.

2. The high-efficiency cyclone separation system according to claim 1, characterized in that: The annular air collecting pipe is located above the shell of the cyclone separator, and the outlet of the air guide pipe is communicated with the annular air collecting pipe.

3. The high-efficiency cyclone separation system according to claim 1, characterized in that: The multiple air guide pipe inlets on the inner wall of the main exhaust pipe are circumferentially arranged at the same horizontal height.

4. The high-efficiency cyclone separation system according to claim 1, characterized in that: The multiple air duct inlets on the inner wall of the main exhaust pipe are evenly arranged in a circumferential direction at multiple levels.

5. The high-efficiency cyclone separation system according to claim 1, characterized in that: The shell is arranged vertically, the upper part is a cylindrical cylinder, the lower part is a conical cylinder, and the dust discharge port is arranged at the bottom end of the conical cylinder.

6. The high-efficiency cyclone separation system according to claim 1, characterized in that: The main exhaust pipe is arranged at the top center of the shell, with the lower part located inside the shell and the upper part located outside the shell.

7. The high-efficiency cyclone separation system according to claim 1, characterized in that: The annular gas collecting pipe is arranged around the main exhaust pipe and is provided with a gas outlet.

8. The high-efficiency cyclone separation system according to claim 7, characterized in that: The gas outlet is connected to the dust removal equipment pipeline.

9. The high-efficiency cyclone separation system according to claim 7, characterized in that: The gas outlet is connected to the gas inlet pipe, and a fan is provided on the connected pipe.

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