Exhaust air recycling dust-settling device

Abstract

The utility model relates to an exhaust air recirculation dust fall device which comprises a dust removal box body and a box cover, an air inlet is formed below the side wall of the dust removal box body, an exhaust port is formed above the side wall of the dust removal box body, a partition plate is fixedly arranged in the dust removal box body, a filter screen is arranged below the partition plate, and a central rotating shaft is rotationally arranged in the middle of the dust removal box body. The bottom end of the central rotating shaft downwards penetrates through the filter screen and is fixedly provided with a first activated carbon cylinder, a plurality of second activated carbon cylinders capable of synchronously rotating are arranged in the peripheral direction of the central rotating shaft, and a plurality of vent holes are formed in the partition plate. During air exhaust, the dust removal box body is in a negative pressure state, dust-containing gas in the cement kiln enters the dust removal box body from the air inlet, dust can be subjected to first-stage adsorption through the first activated carbon cylinder, dust can be subjected to second-stage adsorption through the filter screen, and dust can be subjected to third-stage adsorption through the second activated carbon cylinder; purified gas can be discharged through the vent hole and the exhaust port in sequence to be recycled.

Description

Technical Field

[0001] The utility model relates to the field of cement production, in particular to a dust reduction device for exhaust air recirculation. Background Art

[0002] "Exhaust air circulation" refers to the process of recycling or treating the exhausted gas during cement production or other industrial processes to prevent the exhausted gas from having a high dust content. However, the existing exhaust air dust reduction devices for cement production cannot efficiently filter dust, and there is an urgent need for improvement. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a dust reduction device for exhaust air recirculation, which is used to solve the problem that the existing dust reduction device for exhaust air recirculation cannot efficiently filter dust.

[0004] To solve the above problems, the utility model provides a dust reduction device for exhaust air recirculation, which includes a dust removal box body and a box cover. An air inlet is provided below the side wall of the dust removal box body, and an air outlet is provided above the side wall of the dust removal box body. A partition is fixedly arranged inside the dust removal box body, and a filter screen is arranged below the partition. A central rotating shaft is rotatably arranged in the middle of the dust removal box body. The bottom end of the central rotating shaft penetrates downward through the filter screen and is fixedly provided with a first activated carbon cylinder. A plurality of second activated carbon cylinders that can rotate synchronously are arranged circumferentially on the outer periphery of the central rotating shaft. A plurality of ventilation holes are formed in the partition.

[0005] The dust reduction device for exhaust air recirculation provided by the utility model further has the following technical features:

[0006] Further, a motor is fixedly arranged on the top of the box cover, and the output end of the motor is fixedly connected coaxially with the central rotating shaft.

[0007] Further, the rotation speed of the motor is 60 - 120 r / min.

[0008] Further, a groove is formed on the top of the partition, and a driving gear is rotatably arranged in the groove. The driving gear is fixedly connected coaxially with the central rotating shaft. A plurality of driven gears are meshed and connected to the outside of the driving gear, and the driven gears are fixedly connected coaxially with the central shafts of the second activated carbon cylinders.

[0009] Further, the diameter of the second activated carbon cylinder is smaller than the diameter of the first activated carbon cylinder.

[0010] Further, the aperture of the ventilation hole is 1 - 2 mm.

[0011] The utility model has the following beneficial effects: By connecting the air inlet of the dust removal box body with the exhaust port of the cement kiln and connecting the exhaust port of the dust removal box body with the exhaust fan, when air is extracted, the dust removal box body is in a negative pressure state. The dust-containing gas in the cement kiln enters the dust removal box body from the air inlet. The first activated carbon cylinder can perform primary adsorption on the dust, the filter screen can perform secondary adsorption on the dust, and the second activated carbon cylinder can perform tertiary adsorption on the dust. The purified gas can be discharged through the ventilation holes and the exhaust port in sequence for recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the exhaust air recirculation dust reduction device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Hereinafter, the present utility model will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0014] As Figure 1 In an embodiment of an exhaust air recirculation dust reduction device of the present utility model shown in the figure, it includes a dust removal box body 10 and a box cover 11. An air inlet 101 is provided below the side wall of the dust removal box body 10, and an exhaust port 102 is provided above the side wall of the dust removal box body 10. A partition 20 is fixedly provided inside the dust removal box body 10. A filter screen 21 is provided below the partition 20. A central rotating shaft 30 is rotatably provided in the middle of the dust removal box body 10. The bottom end of the central rotating shaft 30 penetrates downward through the filter screen 21 and is fixedly provided with a first activated carbon cylinder 40. A plurality of second activated carbon cylinders 41 that can rotate synchronously are circumferentially arranged on the outer periphery of the central rotating shaft 30. A plurality of ventilation holes 200 are opened on the partition 20. Specifically, by connecting the air inlet 101 of the dust removal box body 10 with the exhaust port of the cement kiln and connecting the exhaust port 102 of the dust removal box body 10 with the exhaust fan, when air is extracted, the dust removal box body is in a negative pressure state. The dust-containing gas in the cement kiln enters the dust removal box body 10 from the air inlet 101. The first activated carbon cylinder 40 can perform primary adsorption on the dust, the filter screen 21 can perform secondary adsorption on the dust, and the second activated carbon cylinders 41 can perform tertiary adsorption on the dust. The purified gas can be discharged through the ventilation holes 200 and the exhaust port 102 in sequence for recycling.

[0015] In an embodiment of the present application, a motor 50 is fixedly provided on the top of the box cover 11, and the output end of the motor 50 is fixedly connected to the central rotating shaft 30 coaxially.

[0016] In an embodiment of the present application, the rotation speed of the motor 50 is 60 - 120 r / min.

[0017] In an embodiment of the present application, a groove is provided at the top of the partition plate 20. An active gear 22 is rotatably provided in the groove. The active gear 22 is fixedly connected to the central rotating shaft 30 coaxially. A plurality of driven gears 23 are meshed and connected to the outside of the active gear 22. The driven gear 23 is fixedly connected to the central axis of the second activated carbon cylinder 41 coaxially. Specifically, the first activated carbon cylinder 40 can be driven to rotate through the central rotating shaft 30. The central rotating shaft 30 drives the active gear 22 to rotate. The active gear 22 drives the driven gear 23 to rotate. The driven gear 23 drives the second activated carbon cylinder 40 to rotate. Through the rotating first activated carbon cylinder 40 and the second activated carbon cylinder 40, dust can be evenly adhered to their outer surfaces, improving the dust removal efficiency.

[0018] In an embodiment of the present application, the diameter of the second activated carbon cylinder 41 is smaller than the diameter of the first activated carbon cylinder 40.

[0019] In an embodiment of the present application, the aperture diameter of the ventilation hole 200 is 1-2 mm.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An emission air recirculation dust reduction device, characterized in that, It includes a dust removal box body and a box cover. An air inlet is provided below the side wall of the dust removal box body, and an air outlet is provided above the side wall of the dust removal box body. A partition is fixedly arranged inside the dust removal box body. A filter screen is provided below the partition. A central rotating shaft is rotatably arranged in the middle of the dust removal box body. The bottom end of the central rotating shaft penetrates downward through the filter screen and is fixedly provided with a first activated carbon cylinder. A plurality of second activated carbon cylinders that can rotate synchronously are arranged circumferentially on the outer periphery of the central rotating shaft. A plurality of ventilation holes are formed in the partition.

2. The dust removal device with recirculation of exhaust air according to claim 1, characterized in that: A motor is fixedly arranged on the top of the box cover, and the output end of the motor is fixedly connected coaxially with the central rotating shaft.

3. The dust removal device for recirculating exhaust air according to claim 2, characterized in that: The rotational speed of the motor is 60 - 120 r / min.

4. The dust removal device with recirculated exhaust air according to claim 3, characterized in that: A groove is formed on the top of the partition. A driving gear is rotatably arranged in the groove. The driving gear is fixedly connected coaxially with the central rotating shaft. A plurality of driven gears are meshed and connected to the outside of the driving gear. The driven gears are fixedly connected coaxially with the central shafts of the second activated carbon cylinders.

5. The dust removal device for recirculating discharge air according to claim 2, characterized in that: The diameter of the second activated carbon cylinder is smaller than the diameter of the first activated carbon cylinder.

6. The dust removal device for recirculating discharged air according to claim 1, characterized in that: The aperture of the ventilation hole is 1 - 2 mm.

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