A dust exhaust device for preventing turbulent flow

Abstract

The present invention belongs to the technical field of dust exhaust equipment, and in particular, it is a dust exhaust device for preventing turbulent flow. Aiming at the problem that the current dust diversion exhaust pipes are directly connected to the exhaust device for centralized discharge, which will cause turbulent flow, the following scheme is proposed. It includes a bottom intake fan box. A separation mesh cover is fixed at the circumferential position of the top of the bottom intake fan box. An external fixed pipe is fixed to the top of the separation mesh cover by bolts. A vertical intake air pipe is fixed at the middle position of the top of the bottom intake fan box. In the present invention, the high-speed upward airflow in the middle exhaust pipe forms a negative pressure at the side guide air pipe position. The dust gas inhaled through the first branch exhaust pipe, the second branch exhaust pipe and the third branch exhaust pipe enters the branch exhaust pipe guide cavity, and is inhaled into the middle exhaust pipe through the negative pressure effect and discharged. The three auxiliary exhaust fans at the bottom blow air upward to discharge the remaining dust gas in the branch exhaust pipe guide cavity to the top and discharge it.

Description

Technical Field

[0001] The present invention relates to the technical field of dust exhaust equipment, and particularly relates to a dust exhaust device for preventing turbulent flow. Background Art

[0002] During the production and manufacturing process in a factory workshop, due to the special working environment and the special processing products, a large amount of dust will be generated by the equipment. At present, most (multiple) equipment in the factory area / workshop currently adopts independent pipe layout for emission, resulting in multiple dust emission ports on the roof of the factory area / workshop, and cannot be centrally collected. Some pipes in the factory area also adopt parallel pipes to connect the exhaust gases of multiple dust-emitting equipment to a dust exhaust device for centralized emission.

[0003] However, the current dust centralized emission device has the following problems: Due to the design problem of the diversion exhaust pipe, turbulent flow and cross-flow phenomena occur in the equipment exhaust, affecting the operation effect and efficiency of various equipment. The current dust diversion exhaust pipes are all directly connected to the exhaust device for centralized emission. During emission, the dust gases introduced by each branch exhaust pipe will have turbulent flow phenomena, resulting in poor dust exhaust effect, and even the phenomenon that dust exhaust cannot be carried out. And it is not easy to solve such problems in the prior art. Therefore, there is an urgent need for a dust exhaust device for preventing turbulent flow to solve the above problems. Summary of the Invention

[0004] Based on the technical problem that the current dust diversion exhaust pipes are all directly connected to the exhaust device for centralized emission and turbulent flow phenomena will occur, the present invention proposes a dust exhaust device for preventing turbulent flow.

[0005] A dust exhaust device for preventing turbulent flow proposed by the present invention includes a bottom intake fan box. An isolation mesh cover is fixed at the circumferential position of the top of the bottom intake fan box. An external fixed pipe is fixed at the top of the isolation mesh cover by bolts. A vertical intake air pipe is fixed at the middle position of the top of the bottom intake fan box. The intake air pipe is communicated with the inside of the bottom intake fan box. A vertical middle exhaust pipe is fixed at the top of the intake air pipe. A support rod is fixed between the circumferential position of the middle exhaust pipe and the inner wall of the external fixed pipe. A waterproof top cover is fixed at the top of the external fixed pipe. Three exhaust holes are opened on the circumferential outer wall of the external fixed pipe. A first branch exhaust pipe, a second branch exhaust pipe, and a third branch exhaust pipe are respectively fixed at the three exhaust holes by bolts. Branch exhaust adjustment components are installed at the positions where the first branch exhaust pipe, the second branch exhaust pipe, and the third branch exhaust pipe are located on the inner wall of the external fixed pipe.

[0006] Preferably, the bottoms of the first branch exhaust pipe, the second branch exhaust pipe, and the third branch exhaust pipe are all fixed with branch exhaust pipe adjustment blocks. The bottoms of the branch exhaust pipe adjustment blocks are fixed with branch exhaust pipe intake heads by bolts.

[0007] Preferably, a fixed fan plate is fixed to the inner wall of the branch exhaust pipe adjusting block by bolts. An adjusting fan plate is installed in the middle position of the fixed fan plate through a bearing. A first driving motor is fixed inside the fixed fan plate, and the output shaft of the first driving motor is installed with the fixed shaft of the adjusting fan plate.

[0008] Preferably, vertical side air guide pipes are installed on the circumferential outer wall of the middle exhaust pipe. The installation direction of the side air guide pipes faces the bottom. The side air guide pipes are through structures and are internally communicated with the middle exhaust pipe.

[0009] Preferably, the inside of the middle exhaust pipe is set as a through main exhaust guide cavity, and a branch exhaust pipe guide cavity is arranged between the middle exhaust pipe and the external fixed pipe.

[0010] Preferably, the branch exhaust adjusting assembly includes fixing sleeves fixed at the pipe orifices of the first branch exhaust pipe, the second branch exhaust pipe, and the third branch exhaust pipe. An exhaust air guide ring is installed at the top of the fixing sleeve in a hinged manner. Two electric push rods are installed in a hinged manner between the bottom of the exhaust air guide ring and the fixing sleeve.

[0011] Preferably, a corrugated rubber sleeve is installed in a sealed manner between the exhaust air guide ring and the fixing sleeve.

[0012] Preferably, an axial flow fan is installed inside the bottom air inlet fan box. The air outlet position of the axial flow fan faces the air inlet air duct at the top. The axial flow fan intakes air through the bottom air inlet box, and a bottom air inlet box filter element is installed inside the bottom air inlet box.

[0013] Preferably, three auxiliary exhaust fans are installed on the top of the bottom air inlet fan box and are distributed in a circumferential array. The air outlet positions of the three auxiliary exhaust fans face the top.

[0014] Preferably, a fan blade support is installed at the bottom of the middle exhaust pipe. A fan blade is installed at the top of the fan blade support through a bearing. A vertically arranged ash cleaning rotating rod is fixed at the middle position of the top of the fan blade. Vertically arrayed fixed brush rods are fixed on the circumferential outer wall of the ash cleaning rotating rod, and ash cleaning soft rubber strips are fixed at the ends of the fixed brush rods.

[0015] The beneficial effects in the present invention are as follows:

[0016] 1. For this anti-turbulence dust exhaust device, the high-speed upward airflow in the central exhaust pipe forms a negative pressure at the position of the side guide pipes. The dust gas inhaled through the first, second, and third exhaust pipes enters the guide cavity of the branch exhaust pipe, and is discharged into the central exhaust pipe through the negative pressure effect. The three auxiliary exhaust fans at the bottom blow air upward, discharging the remaining dust gas in the guide cavity of the branch exhaust pipe to the top. The negative pressure exhaust method using the central exhaust pipe can reduce the phenomenon of turbulence caused by the airflow in the branch exhaust pipe affecting the exhaust.

[0017] 2. For this anti-turbulence dust exhaust device, during the dust exhaust process, the equipment to be dust-exhausted is respectively connected to the intake heads of the branch exhaust pipes of the first, second, and third exhaust pipes. When the corresponding equipment needs to exhaust dust during the exhaust operation, the first drive motor in the corresponding branch exhaust pipe adjustment will open the adjustment fan plate, and at this time, the dust generated by the equipment can be discharged into the guide cavity of the branch exhaust pipe in the external fixed pipe to achieve dust discharge.

[0018] 3. For this anti-turbulence dust exhaust device, during the process of dust discharge through the first, second, and third exhaust pipes, due to the different densities of the discharged dust, the angle of the dust discharged into the guide cavity of the branch exhaust pipe is adjusted through the branch exhaust adjustment component, and the angle of the exhaust guide ring is controlled by the electric push rod. When the dust density is large, the exhaust guide ring is adjusted to tilt upward, so that the dust can be discharged to the top more efficiently. When the dust density is small, the exhaust guide ring is adjusted vertically to discharge more dust air.

[0019] 4. For this anti-turbulence dust exhaust device, since most of the dust exhaust is inhaled and discharged through the central exhaust pipe, after long-term operation, dust adheres to the inner wall of the central exhaust pipe. Increase the power of the axial flow fan to make the fan blades at the bottom rotate. The greater the power, the faster the dust cleaning rotating rod rotates, and the dust cleaning soft rubber strip at the circumferential position is thrown up, contacting the inner wall of the central exhaust pipe, removing the dust deposited on the inner wall and discharging it through the top position of the device. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of an anti-turbulence dust exhaust device proposed by the present invention;

[0021] Figure 2 It is a partial cross-sectional schematic diagram of the overall structure of an anti-turbulence dust exhaust device proposed by the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the first exhaust pipe of an anti-turbulence dust exhaust device proposed by the present invention;

[0023] Figure 4Schematic structural diagram of the branch exhaust adjustment component of a dust exhaust device for preventing turbulent flow proposed by the present invention;

[0024] Figure 5 Schematic structural diagram of the middle exhaust pipe of a dust exhaust device for preventing turbulent flow proposed by the present invention;

[0025] Figure 6 A dust exhaust device for preventing turbulent flow proposed by the present invention Figure 5 Schematic enlarged view of part A in it.

[0026] In the figure: 1. External fixed pipe; 2. Waterproof top cover; 3. First branch exhaust pipe; 4. Second branch exhaust pipe; 5. Branch exhaust pipe adjustment block; 6. Branch exhaust pipe intake header; 7. Third branch exhaust pipe; 8. Bottom intake box; 9. Isolation mesh cover; 10. Bottom intake fan box; 11. Bottom intake box filter element; 12. Intake air duct; 13. Auxiliary exhaust fan; 14. Middle exhaust pipe; 15. Side air guide pipe; 16. Branch exhaust pipe guide cavity; 17. Main exhaust air guide cavity; 18. Branch exhaust adjustment component; 19. Fixed fan plate; 20. Adjusting fan plate; 21. Electric push rod; 22. Exhaust air guide ring; 23. Fixed sleeve; 24. Corrugated rubber sleeve; 25. Fan blade; 26. Ash cleaning rotating rod; 27. Fixed brush rod; 28. Ash cleaning soft rubber strip. Specific implementation manner

[0027] Referring to Figures 1-6 , a dust exhaust device for preventing turbulent flow includes a bottom intake fan box 10. An isolation mesh cover 9 is fixed at the circumferential position of the top of the bottom intake fan box 10. The top of the isolation mesh cover 9 is fixed with an external fixed pipe 1 by bolts. A vertical intake air duct 12 is fixed at the middle position of the top of the bottom intake fan box 10. The intake air duct 12 is communicated with the inside of the bottom intake fan box 10. The top of the intake air duct 12 is fixed with a vertically arranged middle exhaust pipe 14. A support rod is fixed between the circumferential position of the middle exhaust pipe 14 and the inner wall of the external fixed pipe 1. The top of the external fixed pipe 1 is fixed with a waterproof top cover 2. Three exhaust holes are opened on the circumferential outer wall of the external fixed pipe 1. The first branch exhaust pipe 3, the second branch exhaust pipe 4 and the third branch exhaust pipe 7 are respectively fixed by bolts at the three exhaust holes. Branch exhaust adjustment components 18 are installed at the inner wall positions of the first branch exhaust pipe 3, the second branch exhaust pipe 4 and the third branch exhaust pipe 7 in the external fixed pipe 1.

[0028] Furthermore, branch exhaust pipe adjustment blocks 5 are fixed at the bottoms of the first branch exhaust pipe 3, the second branch exhaust pipe 4 and the third branch exhaust pipe 7. The bottoms of the branch exhaust pipe adjustment blocks 5 are fixed with branch exhaust pipe intake headers 6 by bolts.

[0029] Further, a fixed fan plate 19 is fixed to the inner wall of the branch exhaust pipe adjusting block 5 by bolts. An adjusting fan plate 20 is installed in the middle position of the fixed fan plate 19 through a bearing. A first driving motor is fixed inside the fixed fan plate 19, and the output shaft of the first driving motor is installed with the fixed shaft of the adjusting fan plate 20; the first driving motor in the branch exhaust pipe adjusting block 5 opens the adjusting fan plate 20, and at this time, the dust generated by the device can be discharged into the branch exhaust pipe guide cavity 16 in the external fixed pipe 1 to achieve dust discharge.

[0030] Further, vertically distributed side guide air pipes 15 are installed on the circumferential outer wall of the middle exhaust pipe 14. The installation direction of the side guide air pipes 15 is towards the bottom, and the side guide air pipes 15 are through structures and are internally communicated with the middle exhaust pipe 14.

[0031] Further, the inside of the middle exhaust pipe 14 is set as a through main exhaust guide cavity 17, and a branch exhaust pipe guide cavity 16 is arranged between the middle exhaust pipe 14 and the external fixed pipe 1.

[0032] Further, the branch exhaust adjustment assembly 18 includes fixed sleeves 23 fixed at the pipe orifices of the first branch exhaust pipe 3, the second branch exhaust pipe 4, and the third branch exhaust pipe 7. An exhaust guide air ring 22 is installed at the top of the fixed sleeve 23 by a hinge method, and two electric push rods 21 are installed between the bottom of the exhaust guide air ring 22 and the fixed sleeve 23 by a hinge.

[0033] Further, a corrugated rubber sleeve 24 is installed in a sealed manner between the exhaust guide air ring 22 and the fixed sleeve 23; the angle of the dust discharged into the branch exhaust pipe guide cavity 16 is adjusted by the branch exhaust adjustment assembly 18, and the angle of the exhaust guide air ring 22 is controlled by the electric push rod 21. When the dust density is relatively large, the exhaust guide air ring 22 is adjusted to tilt upwards, so that the dust can be discharged to the top more efficiently. When the dust density is relatively small, the exhaust guide air ring 22 is adjusted vertically to discharge more dust air.

[0034] Further, an axial flow fan is installed inside the bottom air inlet fan box 10. The air outlet position of the axial flow fan faces the top air inlet air pipe 12. The axial flow fan takes in air through the bottom air inlet box 8, and a bottom air inlet box filter element 11 is installed inside the bottom air inlet box 8.

[0035] Further, three auxiliary exhaust fans 13 are installed on the top of the bottom air inlet fan box 10 and are distributed in a circumferential array. The air outlet positions of the three auxiliary exhaust fans 13 face the top.

[0036] Furthermore, a fan blade bracket is installed at the bottom of the middle exhaust pipe 14, and a fan blade 25 is installed at the top of the fan blade bracket through a bearing. A vertically arranged dust cleaning rotating rod 26 is fixed at the middle position of the top of the fan blade 25. Vertically arrayed fixed brush rods 27 are fixed on the circumferential outer wall of the dust cleaning rotating rod 26, and a dust cleaning soft rubber strip 28 is fixed at the end of the fixed brush rod 27. Increase the power of the axial flow fan to make the fan blade 25 at the bottom rotate accordingly. The greater the power, the faster the dust cleaning rotating rod 26 rotates, and the dust cleaning soft rubber strip 28 at the circumferential position is thrown up and contacts the inner wall of the middle exhaust pipe 14 to remove the dust deposited on the inner wall and discharge it through the top position of the device.

[0037] When the present invention is in use: After installing the entire exhaust device in a suitable position and fixing it, install the bottom intake box filter element 10 inside the bottom intake box 8. When the axial flow fan inside the bottom intake fan box 10 operates, it blows high-speed air into the top intake air duct 12. The high-speed exhaust gas discharges upward along the middle exhaust pipe 14 and is discharged through the top of the external fixed pipe 1. During the exhaust process, due to the high-speed upward air flow in the middle exhaust pipe 14, a negative pressure is formed at the position of the side air guide pipe 15. The dust gas inhaled through the first branch exhaust pipe 3, the second branch exhaust pipe 4, and the third branch exhaust pipe 7 enters the branch exhaust pipe guide cavity 16 and is discharged into the middle exhaust pipe 14 through the negative pressure effect. The three auxiliary exhaust fans 13 located at the bottom blow air upward to discharge the remaining dust gas in the branch exhaust pipe guide cavity 16 to the top; during the dust removal process, the equipment to be dust-removed is respectively connected to the branch exhaust pipe intake heads 6 of the first branch exhaust pipe 3, the second branch exhaust pipe 4, and the third branch exhaust pipe 7. When the corresponding equipment needs to remove dust during exhaust, the first drive motor in the corresponding branch exhaust pipe adjustment block 5 opens the adjustment fan plate 20, and at this time, the dust generated by the equipment can be discharged into the branch exhaust pipe guide cavity 16 inside the external fixed pipe 1 to achieve dust discharge; during the process of discharging dust through the first branch exhaust pipe 3, the second branch exhaust pipe 4, and the third branch exhaust pipe 7, due to the different densities of the discharged dust, the branch exhaust adjustment assembly 18 adjusts the angle of the discharged dust into the branch exhaust pipe guide cavity 16, and the angle of the exhaust air guide ring 22 is controlled by the electric push rod 21. When the dust density is relatively large, the exhaust air guide ring 22 is adjusted to tilt upward, so that the dust can be discharged to the top more efficiently. When the dust density is relatively small, the exhaust air guide ring 22 is adjusted vertically to discharge more dust air; during the process of discharging dust, the side air guide pipe 15 inhales and discharges the dust discharged from the first branch exhaust pipe 3, the second branch exhaust pipe 4, and the third branch exhaust pipe 7; since most of the dust exhaust gas is inhaled and discharged from the device through the middle exhaust pipe 14, after long-term operation, dust adheres to the inner wall of the middle exhaust pipe 14. Increase the power of the axial flow fan to make the fan blades 25 at the bottom rotate accordingly. The greater the power, the faster the dust cleaning rotating rod 26 rotates, and the dust cleaning soft rubber strip 28 at the circumferential position is thrown up and contacts the inner wall of the middle exhaust pipe 14 to remove the dust deposited on the inner wall and discharge it through the top position of the device.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A turbulence-proof dust exhaust device, comprising a bottom air intake fan box (10), an isolation mesh cover (9) being fixed at a top circumferential position of the bottom air intake fan box (10), an external fixing pipe (1) being fixed at the top of the isolation mesh cover (9) by bolts, characterized in that: A vertical air intake duct (12) is fixed at the middle position of the top of the bottom air intake fan box (10), the air intake duct (12) is connected to the interior of the bottom air intake fan box (10), a vertically arranged central exhaust duct (14) is fixed at the top of the air intake duct (12), a support rod is fixed between the circumferential position of the central exhaust duct (14) and the inner wall of the external fixed tube (1), a waterproof top cover (2) is fixed at the top of the external fixed tube (1), three exhaust holes are opened on the circumferential outer wall of the external fixed tube (1), a first exhaust pipe (3), a second exhaust pipe (4) and a third exhaust pipe (7) are respectively fixed to the three exhaust holes by bolts, and the first exhaust pipe (3), the second exhaust pipe (4) and the third exhaust pipe (7) are all installed with an exhaust adjustment component (18) at the inner wall position of the external fixed tube (1); An exhaust pipe regulating block (5) is fixed to the bottom of each of the first exhaust pipe (3), the second exhaust pipe (4) and the third exhaust pipe (7); an exhaust pipe inlet pipe head (6) is fixed to the bottom of each of the exhaust pipe regulating blocks (5) by means of bolts; A fixed fan plate (19) is fixed to the inner wall of the branch exhaust pipe adjustment block (5) by means of bolts, an adjustment fan plate (20) is mounted at the middle of the fixed fan plate (19) by means of a bearing, a first drive motor is fixed inside the fixed fan plate (19), and an output shaft of the first drive motor is mounted to a fixed shaft of the adjustment fan plate (20); The branch exhaust regulating assembly (18) comprises a fixing sleeve (23) fixed at the pipe openings of the first branch exhaust pipe (3), the second branch exhaust pipe (4) and the third branch exhaust pipe (7); an exhaust air guide ring (22) is hingedly mounted on the top of the fixing sleeve (23); and two electric push rods (21) are hingedly mounted between the bottom of the exhaust air guide ring (22) and the fixing sleeve (23).

2. The anti-turbulence dust exhaust device according to claim 1, characterized in that: A vertically distributed side air guide pipe (15) is installed on the circumferential outer wall of the central exhaust pipe (14); the installation direction of the side air guide pipe (15) faces the bottom, the side air guide pipe (15) is a through structure, and the side air guide pipe (15) is in communication with the interior of the central exhaust pipe (14).

3. The anti-turbulence dust exhaust device according to claim 2, characterized in that: The interior of the central exhaust pipe (14) is provided as a penetrating main exhaust guide cavity (17), and a branch exhaust pipe guide cavity (16) is provided between the central exhaust pipe (14) and the external fixed pipe (1).

4. The anti-turbulence dust exhaust device according to claim 1, characterized in that: A corrugated rubber sleeve (24) is installed in a sealing manner between the exhaust air guide ring (22) and the fixed sleeve (23).

5. The anti-turbulence dust exhaust device according to claim 1, characterized in that: An axial flow fan is installed inside the bottom air intake fan box (10), the air outlet of the axial flow fan is directed toward the top air intake duct (12), the axial flow fan takes in air through the bottom air intake box (8), and a bottom air intake box filter (11) is installed inside the bottom air intake box (8).

6. The anti-turbulence dust exhaust device according to claim 1, characterized in that: Three auxiliary exhaust fans (13) distributed in a circumferential array are installed on the top of the bottom air intake fan box (10), and the air outlet positions of the three auxiliary exhaust fans (13) are facing the top.

7. The anti-turbulence dust exhaust device according to claim 1, characterized in that: A fan blade bracket is installed at the bottom of the central exhaust pipe (14), and a fan blade (25) is installed on the top of the fan blade bracket through a bearing. A vertically arranged cleaning rotating rod (26) is fixed at the middle position of the top of the fan blade (25), and fixed brush rods (27) distributed in a vertical array are fixed to the circumferential outer wall of the cleaning rotating rod (26), and a cleaning soft rubber strip (28) is fixed to the end of the fixed brush rod (27).

Images