A fully enclosed dust removal device for manufactured sand and gravel aggregates

Abstract

This utility model discloses a fully enclosed dust removal device for manufactured sand and gravel aggregates, including a vibrating screen and a closed cover fixed to the top of the vibrating screen. A dust removal mechanism is connected to the upper end of the closed cover. The dust removal mechanism includes a dust collection box, an induced draft fan, a water-blocking layer, an induced draft pipe, a water vortex structure, a water storage tank, and an air outlet. The beneficial effect of this utility model is that, by connecting the dust removal mechanism to the upper end of the closed cover at the top of the vibrating screen, the large amount of dust generated during the screening of manufactured sand and gravel aggregates is directly impacted by the induced draft pipe onto the water surface of the water storage tank, creating splashes for primary dust removal. Then, the flue gas is guided by the water vortex structure for secondary dust removal, effectively removing dust from the flue gas.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, specifically a fully enclosed dust removal device for manufactured sand and gravel aggregates. Background Technology

[0002] The production process of manufactured sand and gravel aggregates, including crushing, screening, and conveying, generates a large amount of dust, most of which is micro-dust with a particle size of less than 0.075mm. This not only pollutes the environment but also endangers workers' health and may even cause safety accidents.

[0003] Traditional dust removal methods, such as baghouse vacuum cleaners and electrostatic precipitators, are costly and often have unsatisfactory dust removal effects; some wet dust collectors suffer from poor contact between the sprayed water and the dust. With increasingly stringent environmental protection requirements, efficient dust removal has become a top priority for the sand and gravel processing industry. Utility Model Content

[0004] To address the above deficiencies, this utility model provides a fully enclosed dust removal device for manufactured sand and gravel aggregates to solve the dust removal problem during screening of manufactured sand and gravel aggregates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fully enclosed dust removal device for manufactured sand and gravel aggregate includes a vibrating screen and a closed cover fixed to the top of the vibrating screen, wherein a dust removal mechanism is connected to the upper end of the closed cover. The dust removal mechanism includes a dust collection box, an induced draft fan, a water baffle layer, an induced draft duct, a water vortex structure, a water storage tank, and an air outlet. The dust collection box is placed on one side of the vibrating screen, the induced draft fan is installed on the top of the dust collection box, the water baffle layer is installed on the top inside the dust collection box, one end of the induced draft duct is connected to a closed cover, and the other end is connected to the dust collection box. The water vortex structure is set inside the dust collection box, the water storage tank is located at the bottom inside the dust collection box, and the air outlet is opened at the top of the dust collection box.

[0006] Furthermore, the water-retaining layer is connected to a self-cleaning mechanism; The self-cleaning mechanism includes a drive component, a drive plate, a rectangular frame, a flushing pipe, and several flushing heads. The drive component is installed at the front end of the dust collector, the drive plate is installed on the telescopic end of the drive component, the rectangular frame is movably and sealed inside the dust collector, and its right end is connected to the drive plate. The flushing pipe is installed on the top right side of the dust collector, and several flushing heads are evenly installed at the bottom of the flushing pipe, which can realize automatic flushing of the water-blocking layer inside the rectangular frame.

[0007] Furthermore, a set of fixed slide rails are installed on both sides inside the dust removal box, and the rectangular frame is slidably installed on both sides on the set of fixed slide rails, and the water-blocking layer is fixed inside the rectangular frame, which facilitates the movement of the rectangular frame.

[0008] Furthermore, the flushing pipe is connected to an external water pipe, and a water collection tank corresponding to several flushing heads is provided on the right side of the dust collector, so that the wastewater generated during flushing can flow into the water collection tank.

[0009] Furthermore, the water vortex structure includes two sets of opposing airflow guiding vortex plates, which are located on both sides of the exhaust duct, facilitating the re-entry of flue gas into the water vortex for secondary dust removal.

[0010] Furthermore, a set of guide plates corresponding to the airflow guiding vortex plate are installed obliquely on the inner wall of the dust collector to guide the flue gas after dust removal.

[0011] Furthermore, a level gauge is installed at the bottom left side of the dust collector, and a water supply pipe is inserted into the left side of the dust collector to facilitate adding water to the water storage tank.

[0012] Furthermore, a cleaning port is provided at the bottom right side of the dust collector, which can be used to clean the dust at the bottom of the dust collector.

[0013] This utility model provides a fully enclosed dust removal device for manufactured sand and gravel aggregates, which has the following beneficial effects: the dust removal mechanism is connected to the upper end of the closed cover at the top of the vibrating screen. When the manufactured sand and gravel aggregates are screened, a large amount of dust is directly hit on the water surface of the water storage tank through the exhaust pipe, which agitates the water for primary dust removal. Then, the flue gas is guided by the water vortex structure to achieve secondary dust removal, which can effectively remove the dust in the flue gas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a fully enclosed dust removal device for manufactured sand and gravel aggregates as described in this utility model.

[0015] Figure 2 This is a schematic diagram of the flue gas flow direction inside the dust collector box described in this utility model.

[0016] Figure 3 This is a schematic diagram of the self-cleaning mechanism of this utility model.

[0017] Figure 4 This is a schematic diagram of the flushing pipe described in this utility model.

[0018] In the diagram: 1. Vibrating screen; 2. Enclosed hood; 3. Dust collector; 4. Exhaust fan; 5. Water barrier; 6. Exhaust duct; 7. Water vortex structure; 8. Water storage tank; 9. Air outlet; 10. Drive unit; 11. Drive plate; 12. Rectangular frame; 13. Flushing pipe; 14. Flushing head; 15. Fixed slide rail; 16. Water collection tank; 17. Guide plate; 18. Level gauge; 19. Water supply pipe; 20. Cleaning port. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] Please see Figures 1 to 4 As shown in the figure, this application provides a fully enclosed dust removal device for manufactured sand and gravel aggregate, including a vibrating screen 1 and a closed cover 2 fixed on the top of the vibrating screen 1. A dust removal mechanism is connected to the upper end of the closed cover 2. The dust removal mechanism includes a dust removal box 3, an induced draft fan 4, a water baffle layer 5, an induced draft pipe 6, a water vortex structure 7, a water storage tank 8, and an air outlet 9. The dust removal box 3 is placed on one side of the vibrating screen 1, the induced draft fan 4 is installed on the top of the dust removal box 3, the water baffle layer 5 is installed on the top inside the dust removal box 3, one end of the induced draft pipe 6 is connected to the closed cover 2, and the other end is connected to the dust removal box 3. The water vortex structure 7 is set inside the dust removal box 3, the water storage tank 8 is located at the bottom inside the dust removal box 3, and the air outlet 9 is opened at the upper end of the dust removal box 3.

[0021] In this embodiment, the vibrating screen 1 has a feeding port on the right side and a discharge port on the left side. When the vibrating screen 1 screens the manufactured sand and gravel aggregate, a large amount of dust is generated. Using the negative pressure generated by the induced draft fan 4, the flue gas is drawn into the dust collector 3 through the induced draft pipe 6. The induced draft pipe 6 is located above the liquid surface of the water storage tank 8. The flue gas first hits the water surface of the water storage tank 8, agitating violent water splashes. The water splashes mix thoroughly with the dust-laden flue gas, washing the dust and performing a first dust removal. Then, the flue gas passes through the water vortex structure 7, allowing the flue gas to re-enter the water vortex to achieve a second dust removal, thereby effectively removing the dust in the flue gas. The water-blocking layer 5 can prevent water vapor from being carried out. The purified gas is discharged through the air outlet 9, and the washed dust falls into the bottom of the dust collector 3.

[0022] In some embodiments, the water-blocking layer 5 is connected to a self-cleaning mechanism; the self-cleaning mechanism includes a drive component 10, a drive plate 11, a rectangular frame 12, a flushing pipe 13, and a plurality of flushing heads 14. The drive component 10 is installed at the front end of the dust collection box 3, the drive plate 11 is installed on the telescopic end of the drive component 10, the rectangular frame 12 is movably and sealedly inserted into the dust collection box 3, and its right end is connected to the drive plate 11. The flushing pipe 13 is installed on the top right side of the dust collection box 3, and a plurality of flushing heads 14 are evenly installed at the bottom of the flushing pipe 13.

[0023] and combined Figure 3 and Figure 4As shown, the drive component 10 adopts an electric push rod. The dust collection box 3 has a notch on the right side corresponding to the rectangular frame 12. When it is necessary to clean the water-blocking layer 5, the drive component 10 drives the rectangular frame 12 to move to the right through the drive plate 11. With the help of several flushing heads 14 at the bottom of the flushing pipe 13, the water-blocking layer 5 in the rectangular frame 12 can be automatically flushed.

[0024] In some embodiments, a set of fixed slide rails 15 are installed on both sides of the dust collection box 3, and the rectangular frame 12 is slidably installed on both sides of the set of fixed slide rails 15, and the water-blocking layer 5 is fixed inside the rectangular frame 12 to facilitate the movement of the rectangular frame 12.

[0025] In some embodiments, the flushing pipe 13 is connected to an external water pipe, and a water collection tank 16 corresponding to a plurality of flushing heads 14 is provided on the right side of the dust collection box 3, so that the wastewater generated during flushing can flow into the water collection tank 16.

[0026] In some embodiments, the water vortex structure 7 includes two sets of opposing airflow guiding vortex plates, and the two sets of opposing airflow guiding vortex plates are located on both sides of the exhaust duct 6, which facilitates the re-entry of flue gas into the water vortex to achieve secondary dust removal.

[0027] In some embodiments, a set of guide plates 17 corresponding to the airflow guide vortex plate are installed obliquely on the inner wall of the dust collector 3, which can guide the flue gas after dust removal.

[0028] In some embodiments, a level gauge 18 is installed at the bottom left side of the dust collector 3, and a water supply pipe 19 is inserted into the left side of the dust collector 3 to add water to the water storage tank 8.

[0029] In some embodiments, a cleaning port 20 is provided at the bottom right side of the dust collector 3, which can be used to clean the dust at the bottom of the dust collector 3.

[0030] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A fully enclosed dust removal device for manufactured sand and gravel aggregates, comprising a vibrating screen (1) and a closed cover (2) fixed to the top of the vibrating screen (1), characterized in that, The upper end of the enclosed cover (2) is connected to a dust removal mechanism; The dust removal mechanism includes a dust collection box (3), an induced draft fan (4), a water baffle (5), an induced draft duct (6), a water vortex structure (7), a water storage tank (8), and an air outlet (9). The dust collection box (3) is placed on one side of the vibrating screen (1). The induced draft fan (4) is installed on the top of the dust collection box (3). The water baffle (5) is installed on the top inside the dust collection box (3). One end of the induced draft duct (6) is connected to the closed cover (2), and the other end is connected to the dust collection box (3). The water vortex structure (7) is set inside the dust collection box (3). The water storage tank (8) is located at the bottom inside the dust collection box (3). The air outlet (9) is opened at the top of the dust collection box (3).

2. The fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 1, characterized in that, The water-blocking layer (5) is connected to a self-cleaning mechanism; The self-cleaning mechanism includes a drive component (10), a drive plate (11), a rectangular frame (12), a flushing pipe (13), and several flushing heads (14). The drive component (10) is installed at the front end of the dust collection box (3). The drive plate (11) is installed on the telescopic end of the drive component (10). The rectangular frame (12) is movably and sealed inside the dust collection box (3) and its right end is connected to the drive plate (11). The flushing pipe (13) is installed on the top right side of the dust collection box (3). Several flushing heads (14) are evenly installed at the bottom of the flushing pipe (13).

3. The fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 2, characterized in that, The dust collector (3) has a set of fixed slide rails (15) installed on both sides. The rectangular frame (12) is slidably installed on both sides of the set of fixed slide rails (15), and the water-blocking layer (5) is fixed inside the rectangular frame (12).

4. The fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 2, characterized in that, The flushing pipe (13) is connected to an external water pipe, and a water collection tank (16) corresponding to several flushing heads (14) is provided on the right side of the dust collection box (3).

5. A fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 1, characterized in that, The water vortex structure (7) includes two sets of opposing airflow guiding vortex plates, and the two sets of opposing airflow guiding vortex plates are located on both sides of the air duct (6).

6. The fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 5, characterized in that, The dust collector (3) has a set of guide plates (17) installed at an angle on its inner wall, which correspond to the airflow guide vortex plate.

7. A fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 1, characterized in that, A level gauge (18) is installed at the bottom left side of the dust collector (3), and a water supply pipe (19) is inserted into the left side of the dust collector (3).

8. The fully enclosed dust removal device for manufactured sand and gravel aggregates according to claim 1, characterized in that, The dust collection box (3) has a cleaning port (20) at the bottom right side.

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