High-efficiency dry fog suppression system for dust of belt conveyor
By installing dry fog nozzle components on the belt conveyor, the problem of poor dust suppression on roller conveyors is solved by using small-particle, high-density dry fog spray, achieving efficient dust suppression and preventing belt slippage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FENGHUA ENVIRONMENT PROTECTION MASCH CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies are insufficient to effectively address the problem of efficient dust suppression on roller conveyors, especially due to the contradiction between humidity requirements and belt slippage, resulting in poor dust suppression performance.
An enclosed belt conveyor is used, combined with first and second dry fog components. Dry fog nozzles are set at the tail of the feeder and the head of the discharger, respectively. The small particle size and high density of dry fog spray suppresses dust, and the contact efficiency between fog particles and dust is improved through angle adjustment and structural design.
It effectively reduces dust generation during transportation, increases the surface moisture content of powder, enhances dust suppression, and prevents belt slippage.
Smart Images
Figure CN224172068U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a dust suppression system, and more specifically, to a high-efficiency dry fog dust suppression system for belt conveyors. Background Technology
[0002] Currently, in the equipment sector of water mist dust suppression for roller conveyors (materials such as coal powder, mineral stone, and construction waste), the objective need for efficient dust suppression and the limited moisture content of the conveyed materials, especially the slippage of the drive belt pulley due to wetness, have long been a double bottleneck problem that has plagued the dust suppression of material conveying operations and the manufacturing of dust suppression equipment.
[0003] Specifically, on the one hand, with the continuous improvement of dust suppression requirements for conveyor belts, the requirements for the efficiency of dust suppression equipment are also increasing; on the other hand, the generational upgrade of the structure, mechanism, layout and deployment methods of the overall dust suppression system equipment itself, as well as the evolution of fogging forms, are also inevitable and inevitable.
[0004] From atmospheric pressure spraying to high-pressure micro-mist spraying, and then to ultra-fine mist spraying, from single-fluid spraying to dual-fluid dry fog suppression, although the efficiency and effectiveness of dust suppression are constantly improving, they still fall short of expectations compared to increasingly stringent environmental protection requirements and actual dust suppression effects. In practice, efforts to increase the number of spray points and nozzles to increase the mist volume in order to achieve the ideal suppression effect have not only failed to achieve the expected results, but have also created a pair of accompanying contradictions with the resulting issues such as belt slippage at the drive pulley and excessive moisture content in the material, bringing continuous troubles and problems to enterprise operations and environmental governance. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a high-efficiency dry fog dust suppression system for belt conveyors that features a simple structure, small water mist particle size, high density, and high dust reduction efficiency.
[0006] The technical solution of this utility model is implemented as follows: a high-efficiency dry fog dust suppression system for a belt conveyor includes a closed belt conveyor, the belt conveyor including a feed tail and a discharge head, the feed tail is provided with a discharge port, and a first dry fog component spraying towards the discharge port is provided in the feed tail on the side of the discharge port along the forward direction; a second dry fog component is provided above the discharge head; both the first dry fog component and the second dry fog component are connected to an external fogging system.
[0007] In the aforementioned high-efficiency dry fog dust suppression system for a belt conveyor, the first dry fog component includes a suppression dry fog box located inside the tail of the feeder, and a densification dry fog box located behind the suppression dry fog box. Both the suppression dry fog box and the densification dry fog box have a plurality of first dry fog nozzles evenly distributed along their length direction, spraying towards the material discharge port. The suppression dry fog box and the densification dry fog box are mounted on the top inside the tail of the feeder via an angle adjustment bracket.
[0008] In the above-mentioned high-efficiency dry fog suppression system for belt conveyors, at least two discharge ports are provided at the tail of the feeder, and a suppression dry fog box is provided behind each discharge port. An encrypted dry fog box is provided behind the suppression dry fog box located at the last end of the material in the material inlet direction.
[0009] In the above-mentioned high-efficiency dry fog dust suppression system for belt conveyors, the discharge head adopts an open structure and is connected to the lower belt or feeding port, and the end of the discharge head is coordinated with an external iron removal device.
[0010] The second dry fog assembly includes a U-shaped water pipe disposed on one side of the discharge head, an external iron removal device disposed above the middle of the U-shaped water pipe, and several second dry fog nozzles spraying downwards towards the center at the bottom of the horizontal sections on both sides of the U-shaped water pipe.
[0011] In the above-mentioned high-efficiency dry fog suppression system for belt conveyors, the discharge head adopts a closed structure and is connected to the lower belt or feeding port. The discharge head is tilted downwards. A dust cover is provided on the discharge head, and a stepped cover is provided on the dust cover at the end of the discharge head. A retaining tape is provided at the bottom opening of the stepped cover.
[0012] The second dry fog assembly includes a horizontal dry fog nozzle with a vertical section of the stepped hood, the horizontal dry fog nozzle spraying upwards towards the discharge head; and a vertical dry fog nozzle is provided on the lowest horizontal section of the stepped hood, the vertical dry fog nozzle spraying downwards towards the material drop point.
[0013] With the above-described structure, this invention uses a first dry fog component to suppress dust at the tail of the feeder, effectively reducing dust generated during material feeding at the discharge port and increasing the surface moisture content of the powder to reduce dust generated during conveying. A second dry fog component is installed above the discharge head to reduce dust generated during material discharge at the discharge end and to increase the surface moisture content of the powder.
[0014] Because dry fog has the characteristics of small water mist particles and high density, it can fully increase the contact between fog particles and dust, improve the suppression effect, and the small water mist particles are less likely to wet the conveyor belt and cause slippage. Attached Figure Description
[0015] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the feeder tail of this utility model;
[0018] Figure 3 This is a schematic diagram of the discharge head structure of Embodiment 1 of this utility model;
[0019] Figure 4 This is a schematic diagram of the second dry fog component structure in Embodiment 1 of this utility model.
[0020] Figure 5 This is a schematic diagram of the discharge head structure of Embodiment 2 of this utility model.
[0021] In the diagram: 1. Feeder tail; 2. Discharge head; 3. Discharge port; 4. First dry fog assembly; 4a. Suppression dry fog box; 4b. Enhancing dry fog box; 4c. First dry fog nozzle; 4d. Angle adjustment bracket; 5. Second dry fog assembly; 5a. U-shaped water pipe; 5b. Second dry fog nozzle; 5c. Horizontal dry fog nozzle; 5d. Vertical dry fog nozzle; 6. Dust cover; 7. Stepped cover; 8. Enclosure tape. Detailed Implementation
[0022] Example 1
[0023] See Figure 1-3 As shown, this utility model discloses a high-efficiency dry fog dust suppression system for a belt conveyor, comprising a closed belt conveyor, including a feed tail 1 and a discharge head 2. The feed tail 1 has a discharge port 3, and a first dry fog component 4 spraying towards the discharge port 3 is located inside the feed tail 1 on the side of the feed tail 1 along the forward direction. A second dry fog component 5 is located above the discharge head 2. Both the first and second dry fog components 4 are connected to an external fogging system. The first dry fog component suppresses dust at the feed tail, effectively reducing dust generated during feeding at the discharge port and increasing the surface moisture content of the powder to further reduce dust during conveying. The second dry fog component above the discharge head reduces dust generated during discharge at the discharge end and increases the surface moisture content of the powder.
[0024] Because dry fog has the characteristics of small water mist particles and high density, it can fully increase the contact between fog particles and dust, improve the suppression effect, and the small water mist particles are less likely to wet the conveyor belt and cause slippage.
[0025] The external fogging system includes components such as a water tank, a dry fog generator, and an air tank. Its specific structure and connection method are existing structures in the field of dry fogging and are common knowledge to those skilled in the art, so they will not be described in detail here.
[0026] In this embodiment, preferably, the first dry fog assembly 4 includes a suppression dry fog box 4a disposed within the feeder tail 1, and a densification dry fog box 4b disposed behind the suppression dry fog box 4a. Both the suppression dry fog box 4a and the densification dry fog box 4b have a plurality of first dry fog nozzles 4c evenly distributed along their length direction, spraying towards the discharge port 3. The suppression dry fog box 4a and the densification dry fog box 4b are mounted on the top of the feeder tail 1 via an angle adjustment bracket 4d. The feeder tail is typically fully enclosed. The suppression dry fog box sprays in the opposite direction of the belt movement to create a seal, forming a counter-rotating motion between the fog particles and dust within the enclosed space. This increases the dwell time, allowing the dust and fog to fully coalesce, thereby increasing the suppression effect.
[0027] Since different manufacturers or different customers may design different angles for the feed channel at the feed inlet, the angle adjustment bracket is used to adjust and fix the angle of the first dry fog nozzle to accurately cover the dust source area, thereby ensuring the suppression effect.
[0028] The distance between the suppression dry fog chamber and the densification dry fog chamber is set at 400-500mm. The densification dry fog chamber increases the dry fog suppression density and further enhances the suppression effect.
[0029] More preferably, the feeder tail 1 is provided with at least two discharge ports 3, and a damping dry fog box 4a is provided behind each discharge port 3. A denser dry fog box 4b is provided behind the damping dry fog box 4a located at the last end in the material feeding direction. The feeder tail is usually fully enclosed. At the discharge port at the front end, even if the damping is not complete, the dust cannot escape. As the conveyor belt moves forward, it is dispersed and subjected to secondary damping by the damping dry fog box at the next discharge port until the final damping is completed at the end through the denser dry fog box.
[0030] In this embodiment, the discharge head 2 adopts an open structure and connects to the lower belt or feed port. The end of the discharge head 2 cooperates with an external iron removal device. Different manufacturers or different users have different structural arrangements for the head section. Some head sections require material splitting, which necessitates a coal plow to divide the material in two. Material splitting often presents an excellent opportunity for iron removal, so most designers place the iron remover closely following the coal plow. Furthermore, since the maintenance cycles of the iron remover, coal plow, and main roller are often not synchronized, an open head facilitates the installation and operation of each component.
[0031] The second dry fog assembly 5 includes a U-shaped water pipe 5a disposed on one side of the discharge head 2. The external iron removal device is located above the middle of the U-shaped water pipe 5a. Several second dry fog nozzles 5b are provided at the bottom of the horizontal sections on both sides of the U-shaped water pipe 5a, spraying downwards towards the center. By using the U-shaped water pipe to avoid external iron removal devices and other components, the dry fog assembly avoids interference with the material falling and iron removal. With this structure, the dry fog can cover the dust raised by the falling coal from top to bottom in a three-dimensional manner, greatly increasing the contact probability between dust and fog particles and minimizing dust removal. Furthermore, the second dry fog nozzles are all located on the outside of the discharge head, avoiding the main roller, which can effectively prevent slippage.
[0032] During operation, the powder falls from the discharge port onto the belt conveyor at the tail of the feeder. The first dry fog nozzle on the damping dry fog box sprays mist to suppress dust. After the material is conveyed along the belt conveyor, passes through the last discharge port, and is suppressed again by the damping dry fog box, it undergoes a second suppression on the denser dry fog box. When the material is conveyed to the discharge head, it is suppressed by the second dry fog nozzle on the U-shaped water pipe.
[0033] Example 2
[0034] See Figure 3 As shown, the present invention discloses a high-efficiency dry fog suppression system for dust on a belt conveyor. Its structure is basically the same as that of Embodiment 1. The difference is that in this embodiment, the discharge head 2 adopts a closed structure and is connected to the lower belt or feeding port. The discharge head 2 is inclined downward. A dust cover 6 is provided on the discharge head 2, and a stepped cover 7 is provided on the dust cover 6 at the end of the discharge head 2. A retaining tape 8 is provided at the bottom opening of the stepped cover 7.
[0035] The second dry fog assembly 5 includes horizontal dry fog nozzles 5c located on the vertical section of the stepped hood 7, which spray upwards towards the discharge head 2; and vertical dry fog nozzles 5d located on the lowest horizontal section of the stepped hood 7, which spray downwards towards the material drop area. The horizontal dry fog nozzles spray at a level approach with the conveyor belt, and the fog is suppressed and swirled within the hood, further increasing the fog particle density and reducing the total fog volume, while also expanding the fog field to effectively dissolve, suppress, and reduce dust. The vertical dry fog nozzles are located on the outer side, avoiding the main roller, which effectively prevents slippage.
[0036] Its usage method is the same as in Example 1.
[0037] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.
Claims
1. A high-efficiency dry fog suppression system for a belt conveyor, comprising a closed belt conveyor, the belt conveyor including a feed tail (1) and a discharge head (2), wherein the feed tail (1) is provided with a discharge port (3), characterized in that, A first dry fog assembly (4) spraying towards the discharge port (3) is provided in the feeder tail (1) on the side of the discharge port (3) along the forward direction; a second dry fog assembly (5) is provided above the discharge head (2); the first dry fog assembly (4) and the second dry fog assembly (5) are both connected to an external fogging system.
2. The high-efficiency dry fog dust suppression system for belt conveyors according to claim 1, characterized in that, The first dry fog assembly (4) includes a damping dry fog box (4a) located in the feeder tail (1), and a denser dry fog box (4b) located behind the damping dry fog box (4a). Both the damping dry fog box (4a) and the denser dry fog box (4b) are evenly distributed along their length direction with a number of first dry fog nozzles (4c) that spray towards the discharge port (3). The damping dry fog box (4a) and the denser dry fog box (4b) are installed at the top inside the feeder tail (1) by an angle adjustment bracket (4d).
3. The high-efficiency dry fog dust suppression system for belt conveyors according to claim 2, characterized in that, The feeder tail (1) is provided with at least two discharge ports (3), and a damping dry fog box (4a) is provided behind each discharge port (3). A denser dry fog box (4b) is provided behind the damping dry fog box (4a) located at the last end of the material feeding direction.
4. The high-efficiency dry fog dust suppression system for belt conveyors according to claim 1, characterized in that, The discharge head (2) adopts an open structure and is connected to the lower belt or feeding port. The end of the discharge head (2) is matched with an external iron removal device. The second dry fog assembly (5) includes a U-shaped water pipe (5a) disposed on one side of the discharge head (2), the external iron removal device is disposed above the middle part of the U-shaped water pipe (5a), and a plurality of second dry fog nozzles (5b) spraying downwards towards the center are provided at the bottom of the horizontal sections on both sides of the U-shaped water pipe (5a).
5. The high-efficiency dry fog dust suppression system for belt conveyors according to claim 1, characterized in that, The discharge head (2) adopts a closed structure and is connected to the lower belt or feeding port. The discharge head (2) is tilted downward. A dust cover (6) is provided on the discharge head (2). A stepped cover (7) is provided on the dust cover (6) at the end of the discharge head (2). A protective tape (8) is provided at the bottom opening of the stepped cover (7). The second dry fog assembly (5) includes a horizontal dry fog nozzle (5c) with a vertical section of a stepped hood (7), the horizontal dry fog nozzle (5c) spraying upwards toward the discharge head (2); and a vertical dry fog nozzle (5d) is provided on the lowest horizontal section of the stepped hood (7), the vertical dry fog nozzle (5d) spraying downwards toward the material drop point.