Cyclone separator exhaust device

Abstract

The utility model relates to an exhaust device of a cyclone separator, which comprises a gas guide jacket, a high-concentration dust gas guide pipe, a dust particle filtering device and a fan, the gas guide jacket is a concentric jacket structure consisting of an inner sleeve and an outer sleeve, the upper end of the concentric jacket is closed, the lower end of the concentric jacket is open, a spiral plate is arranged in the concentric jacket, the top of the spiral plate is connected with a dust gas buffering cavity, and the dust particle filtering device is arranged in the dust gas buffering cavity. The dust and gas buffering cavity is connected with the high-concentration dust and gas guide pipe, the high-concentration dust and gas guide pipe passes through the dust particle filtering device and is connected with the main exhaust pipe through the fan, and the gas guide jacket is arranged at the connecting position of the top of the cyclone separator and the main exhaust pipe. The limited internal space of the cyclone separator is fully utilized, the equipment space is saved, dust-containing gas is subjected to two-time dust removal and purification, the gas dust removal efficiency is high, the dust concentration of gas exhausted by the cyclone separator can be effectively reduced, and therefore the dust removal efficiency of the cyclone separator is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclone dust removal, in particular to an exhaust device for a cyclone separator. Background Art

[0002] At present, due to the advantages of simple structure, convenient maintenance, stable performance, etc., cyclone separators are widely used in the engineering practice of gas-solid separation and liquid-solid separation. The cyclone separator uses the centrifugal force generated by the rotating dusty gas to effectively separate dust from the air flow.

[0003] When the air flow reaches a certain position at the lower end of the cone, the rotating air flow rotates upward from bottom to top in the same rotating direction. Finally, the dusty gas passing through the cyclone separator is discharged outside through the exhaust pipe. During the upward rotation of the gas, some uncollected dust particles will be discharged from the cyclone separator along with the purified gas and discharged into the atmosphere. Therefore, the dust removal rate of the cyclone separator is low and has a long-term impact on the environment. At present, the mainstream method is to use two or more cyclone separators connected in series to improve the dust removal efficiency, but its disadvantage is that the equipment occupies a large space and the operation energy consumption is high. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an exhaust device for a cyclone separator. Through further innovation of the exhaust pipe structure of the cyclone separator, on the basis of the traditional cyclone separator dust removal, by utilizing the characteristic that the rotating upward air flow of the cyclone separator has a high rotating speed, an exhaust device is added between the top of the cyclone separator and the main exhaust pipe to perform efficient secondary dust removal on the dusty gas, reduce the dust concentration of the gas discharged from the cyclone separator, improve the dust removal efficiency, reduce the operation energy consumption, and save the equipment space.

[0005] In order to achieve the above purpose, the utility model is realized by adopting the following technical solutions:

[0006] An exhaust device for a cyclone separator includes a gas guiding jacket, a high-concentration dust gas conduit, a dust particle filtering device and a fan. The gas guiding jacket is a concentric jacket structure composed of an inner sleeve and an outer sleeve. The upper end of the concentric jacket is closed and the lower end is open. A spiral plate is arranged in the concentric jacket. The top of the spiral plate is connected to a dust gas buffer chamber. The dust gas buffer chamber is connected to the high-concentration dust gas conduit. The high-concentration dust gas conduit passes through the dust particle filtering device and is connected to the main exhaust pipe through the fan. The gas guiding jacket is arranged at the connection position between the top of the cyclone separator and the main exhaust pipe.

[0007] Further, the lower edge of the inner sleeve is higher than the lower edge of the outer sleeve.

[0008] Further, an air flow regulating valve is arranged in the high-concentration dust gas conduit.

[0009] Further, the spiral rotation direction of the spiral plate is consistent with the airflow rotation direction inside the cyclone separator.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The structure is reliable and the operation is simple. It makes full use of the limited space inside the cyclone separator, saves equipment space, can effectively reduce the dust concentration of the gas discharged from the cyclone separator, and thus greatly improves the dust removal efficiency of the cyclone separation device.

[0012] 2. The spiral exhaust device arranged between the cyclone separator and the main exhaust pipe forms a spiral air duct between the spiral plates, quickly separates the dust from the gas inside the inner sleeve, and the dust gas is filtered and purified and then merged back into the main exhaust pipe to be sent away. The dust-containing gas undergoes two-stage dust removal and purification, with high gas dust removal efficiency and low operating energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a schematic structural diagram of an exhaust device of a cyclone separator according to the present utility model.

[0014] Figure 2 FIG. is a schematic connection diagram of the air guide jacket according to the present utility model.

[0015] Figure 3 FIG. is a structural diagram of the air guide jacket according to the present utility model.

[0016] In the figure: 1. Gas inlet pipe; 2. Cyclone separator; 3. Main exhaust pipe; 4. Outer sleeve; 5. Spiral plate; 6. Inner sleeve; 7. Air guide jacket; 8. Dust gas buffer chamber; 9. High-concentration dust gas conduit; 10. Dust particle filtering device; 11. Fan; 12. Airflow regulating valve; A. Dust-containing flue gas; B. Clean gas. DETAILED DESCRIPTION OF THE INVENTION

[0017] The following further describes the specific embodiments of the present utility model in conjunction with the drawings:

[0018] As Figures 1-3As shown in the figure, the working principle of a cyclone separator exhaust device is as follows: The dusty flue gas A enters the cyclone separator 2 through the dusty gas inlet pipe 1. Since the gas enters tangentially, under the action of centrifugal force, the gas rotates downward. The dust particles are relatively large in volume, and the centrifugal force throws them onto the wall of the device. Once the dust particles come into contact with the wall, they will lose their inertial force and instead fall along the wall surface relying on the momentum of the inlet velocity and the downward gravity, and finally enter the ash discharge pipe. This is the primary dust removal of the dusty gas. After the dusty gas spirals downward to the bottom, according to the principle that the "rotation distance" remains unchanged, the gas spirals upward at the central position of the cyclone separator 2 in the same spiral. When it rises to the top of the cyclone separator 2, it enters the exhaust device. Since the outer sleeve 4 of the air guide jacket 7 of the exhaust device is lower than the inner sleeve 6 in height, the rising dusty gas first contacts the outer sleeve 4. Similarly, under the action of inertial centrifugal force, the dust particles in the dusty gas are thrown into the concentric jacket of the air guide jacket 7 on the periphery of the gas. The spiral air channels formed by the spiral plates 5 in the jacket force the dusty gas to rise along the spiral air channels and enter the dust-gas buffer chamber 8. The dusty gas containing dust particles is introduced into the dust particle filtration device 10 through the high-concentration dusty gas conduit 9 connected to the dust-gas buffer chamber 8, and the clean gas B after secondary dust removal is discharged after converging into the main exhaust pipe 3.

[0019] As Figures 1-3 shown in the figure, a cyclone separator exhaust device includes an air guide jacket 7, a high-concentration dusty gas conduit 9, a dust particle filtration device 10, and a fan 11. The air guide jacket 7 is a concentric jacket structure composed of an inner sleeve 6 and an outer sleeve 4. The upper end of the concentric jacket is closed and the lower end is open. A spiral plate 5 is arranged in the concentric jacket. The top of the spiral plate 5 is connected to the dust-gas buffer chamber 8. A plurality of spiral plates 5 are evenly arranged in the air guide jacket 7. The inner and outer diameter edges of the spiral plate 5 are respectively connected to the tube walls of the inner sleeve 6 and the outer sleeve 4, forming a spiral air guide channel. The rotation direction of the spiral air guide channel is the same as the rotation direction of the air flow in the cyclone separator 2. The dust-gas buffer chamber 8 is located above the structure of each spiral plate 5 and is connected to the high-concentration dusty gas conduit 9. The high-concentration dusty gas conduit 9 is connected to the dust particle filtration device 10 and is connected to the main exhaust pipe 3 through the fan 11. The air guide jacket 7 is arranged at the connection position between the top of the cyclone separator 2 and the main exhaust pipe 3.

[0020] Furthermore, the lower edge of the inner sleeve 6 is higher than the lower edge of the outer sleeve 4, and the height difference is H. The diameter of the inner sleeve 6 is d, and 0.5d < H < 2d.

[0021] Furthermore, an air flow regulating valve 12 is arranged in the high-concentration dusty gas conduit 9.

[0022] Furthermore, the spiral rotation direction of the spiral plate 5 is the same as the rotation direction of the air flow in the cyclone separator 2.

[0023] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A cyclone separator exhaust device, comprising a gas guide jacket, a high-concentration dust gas conduit, a dust particle filtering device, and a fan, characterized in that, The air guiding jacket is a concentric jacket structure composed of an inner sleeve and an outer sleeve. The upper end of the concentric jacket is closed and the lower end is open. A spiral plate is arranged in the concentric jacket. The top of the spiral plate is connected to the dust gas buffer chamber. The dust gas buffer chamber is connected to the high-concentration dust gas conduit. The high-concentration dust gas conduit passes through the dust particle filtering device and is connected to the main exhaust pipe through a blower. The air guiding jacket is arranged at the connection position between the top of the cyclone separator and the main exhaust pipe.

2. The exhaust device of a cyclone separator according to claim 1, characterized in that, The lower edge of the inner sleeve is higher than the lower edge of the outer sleeve.

3. The exhaust device of a cyclone separator according to claim 1, characterized in that, An air flow regulating valve is arranged in the high-concentration dust gas conduit.

4. The exhaust device of a cyclone separator according to claim 1, characterized in that, The spiral rotation direction of the spiral plate is the same as the air flow rotation direction inside the cyclone separator.

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