Gravity dust removal equipment for asphalt concrete processing
By setting up a centrifugal fan wheel and fan blades in the gravity dust removal box, the dust is thrown out by centrifugal force, which solves the problem of poor dust removal effect in limited space and achieves more efficient dust interception and sedimentation.
Patent Information
- Application Number
- CN202422293574.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In the case of limited space, the dust removal effect of the existing gravity dust collection box is limited, and it is difficult to increase the dust interception and sedimentation speed without increasing the length of the equipment.
Multiple centrifugal wind wheels and fan blades are set in the dust removal box to use centrifugal force to throw out dust, combined with the principle of gravity sedimentation, to improve the dust interception effect and sedimentation speed.
Without increasing the length of the dust collection box, the dust interception and sedimentation speed is significantly improved, thereby enhancing the dust collection effect.
Smart Images
Figure CN223324207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gravity dust removal boxes, in particular to gravity dust removal equipment for asphalt concrete processing. Background Art
[0002] Asphalt concrete manufacturers require large quantities of sand and gravel aggregates. Dust is generated during the crushing, screening, drying, conveying, and mixing processes. To ensure a healthy working environment, ventilation systems are typically used to transport air and dust from equipment hoods to a dust removal workshop for air removal. Air pollution in asphalt concrete processing plants is relatively simple, primarily sand and gravel dust. Existing technology uses gravity dust removal boxes for initial dust removal, followed by further filtration through bag filters. The dust is then discharged after dust removal.
[0003] The principle of gravity dust collection is that when air flows through the dust collection box, the cross-sectional size of the air flow increases, the pressure decreases, and the flow rate decreases. Due to the action of gravity, the relatively large particles in the air settle after the air flow rate decreases. Therefore, the gravity dust collection box can initially filter the dust in the air. To improve the dust removal effect of the gravity dust collection box, the length of the gravity dust collection box is usually increased and the number of receiving hoppers is increased. However, due to space constraints, large-scale gravity dust collection boxes cannot be used in many cases. Therefore, improving the dust removal effect of the gravity dust collection box within the premise of limited space is an important issue to consider in air dust removal. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the utility model provides a gravity dust removal equipment for asphalt concrete processing, which is used to improve the dust removal effect of the gravity dust removal box under the premise of limited space and limited length and size of the gravity dust removal box.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0006] A gravity dust removal device for asphalt concrete processing includes a dust removal box, a plurality of dust hoppers are arranged horizontally at the bottom of the dust removal box, a plurality of centrifugal wind wheels are arranged inside the dust removal box, the centrifugal wind wheels are perpendicular to the axis of the dust removal box, and the centrifugal wind wheels are respectively located directly above each dust hopper, a plurality of fan blades are fixedly installed on the circumference of the centrifugal wind wheel, and the plurality of fan blades are arranged in rotational symmetry, and a conical drum is installed inside the centrifugal wind wheel.
[0007] Preferably, an air inlet pipe and an air outlet pipe are respectively provided at both ends of the dust removal box.
[0008] Preferably, the tip of the drum faces the direction of the air inlet pipe.
[0009] Preferably, the plurality of centrifugal wind wheels are coaxially arranged, and the centrifugal wind wheels are located on the axis of the dust removal box.
[0010] Preferably, the centrifugal wind wheel is installed inside the dust removal box through a rotating shaft, a shaft seat on the end surface of the rotating shaft, and a support frame whose shaft seat surface is connected to the inner wall of the dust removal box.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] The utility model discloses a centrifugal fan wheel is arranged in the dust collector box and above the dust collecting hopper, and the air mixed with dust pushes the fan blades to drive the centrifugal fan wheel to rotate, and the air velocity is further reduced by blocking the fan blades and the centrifugal fan wheel. At the same time, the centrifugal fan wheel drives the dust in the air to be centrifuged, and the dust in the air is thrown out along the circumferential direction of the centrifugal fan wheel, while the air continues to flow backward, thereby improving the dust interception effect and the sedimentation speed without increasing the length of the dust collector box, and improving the dust removal effect, thereby achieving the purpose of improving the dust removal effect of the gravity dust collector box under the premise of limited space and limited length and size of the gravity dust collector box. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the internal structure of the dust removal box of the utility model;
[0015] Figure 3 This is the left side view of the centrifugal wind wheel of the utility model;
[0016] Figure 4 This is a front view of the centrifugal wind wheel of the utility model;
[0017] Figure 5 This is a cross-sectional view of the internal structure of the centrifugal wind wheel of the present invention.
[0018] In the figure: 1. Dust removal box; 2. Dust collecting hopper; 3. Centrifugal fan wheel; 4. Fan blade; 5. Rotating drum; 6. Air inlet pipe; 7. Air outlet pipe; 8. Rotating shaft; 9. Shaft seat; 10. Support frame. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] like Figure 1-5As shown, the utility model provides a technical solution: a gravity dust removal device for asphalt concrete processing, comprising a dust removal box 1, an air inlet pipe 6 and an air outlet pipe 7 are respectively provided at both ends of the dust removal box 1, a plurality of dust receiving hoppers 2 are arranged laterally at the bottom of the dust removal box 1, a plurality of centrifugal wind wheels 3 are arranged inside the dust removal box 1, and the centrifugal wind wheels 3 are installed inside the dust removal box 1 through a rotating shaft 8, a shaft seat 9 on the end surface of the rotating shaft 8, and a support frame 10 whose surface is connected to the inner wall of the dust removal box 1;
[0021] The centrifugal wind wheel 3 is perpendicular to the axis of the dust removal box 1, and the centrifugal wind wheel 3 is located directly above each dust receiving hopper 2. Multiple centrifugal wind wheels 3 are coaxially arranged, and the centrifugal wind wheel 3 is located on the axis of the dust removal box 1. Multiple fan blades 4 are fixedly installed on the circumference of the centrifugal wind wheel 3, and the multiple fan blades 4 are rotationally symmetrically arranged. A conical drum 5 is installed inside the centrifugal wind wheel 3, and the tip of the drum 5 is facing the direction of the air inlet pipe 6.
[0022] Working principle:
[0023] When the air mixed with dust enters the dust removal box 1 from the air inlet pipe 6 and reaches the top of the dust receiving hopper 2, the cross-sectional size of the air flow channel increases, the air pressure drops, and the flow rate decreases, so that the thrust exerted on the flow of dust particles decreases, and they settle under the action of gravity; at the same time, the centrifugal fan wheel 3, the fan blades 4 and the drum 5 are perpendicular to the direction of air flow, which has an obstructive effect on the air, further reduces the air flow rate, and increases the amount of dust settling; the flowing air pushes the fan blades 4 to drive the centrifugal fan wheel 3 to rotate, and the centrifugal fan wheel 3 rotates to throw the dust in the air in a circular direction, while the air continues to flow backward, thereby improving the dust interception effect and the settling speed without increasing the length of the dust removal box 1, thereby improving the dust removal effect.
[0024] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.
[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A gravity dust removal device for asphalt concrete processing, comprising a dust removal box (1), wherein a plurality of dust receiving hoppers (2) are arranged laterally at the bottom of the dust removal box (1), characterized in that: A plurality of centrifugal wind wheels (3) are arranged inside the dust removal box (1), the centrifugal wind wheels (3) are perpendicular to the axis of the dust removal box (1), and the centrifugal wind wheels (3) are respectively located directly above each dust receiving hopper (2), a plurality of fan blades (4) are fixedly mounted on the circumference of the centrifugal wind wheel (3), the plurality of fan blades (4) are arranged in rotational symmetry, and a conical drum (5) is mounted inside the centrifugal wind wheel (3).
2. The asphalt concrete processing gravity dust removal equipment according to claim 1, characterized in that: An air inlet pipe (6) and an air outlet pipe (7) are respectively provided at both ends of the dust removal box (1).
3. The asphalt concrete processing gravity dust removal equipment according to claim 2, characterized in that: The tip of the rotating drum (5) faces the direction of the air inlet pipe (6).
4. The asphalt concrete processing gravity dust removal equipment according to claim 1, characterized in that: The plurality of centrifugal wind wheels (3) are coaxially arranged, and the centrifugal wind wheels (3) are located on the axis of the dust removal box (1).
5. The asphalt concrete processing gravity dust removal equipment according to claim 1, characterized in that: The centrifugal wind wheel (3) is installed inside the dust removal box (1) via a rotating shaft (8), a shaft seat (9) on the end surface of the rotating shaft (8), and a support frame (10) whose surface is connected to the inner wall of the dust removal box (1).