A flue gas dust removal device for cooling towers

Abstract

This invention provides a flue gas dust removal device for cooling towers, including a tower body. A connecting frame is connected to one side of the tower body, and a collection frame is connected to the bottom of the connecting frame. A rotatable filter cover with an open bottom is installed inside the connecting frame. The bottom of the connecting frame contacts the bottom of the filter cover and has an opening corresponding to the open portion of the filter cover. A flue gas inlet pipe, rotatably connected to the filter cover and used to discharge flue gas into the filter cover, passes through the top of the connecting frame. A first cleaning brush is provided on the inner side of the filter cover for cleaning the inner wall of the filter cover. A lead screw, which rotates within the connecting frame, drives the first cleaning brush to rise and fall. A motor is installed on the connecting frame to drive the filter cover and the lead screw to rotate. This invention effectively filters particulate matter and other impurities in the flue gas through the filter cover and can clean impurities adhering to the filter cover in real time, ensuring the filtration effect of the filter cover and preventing impurities from entering the cooling tower with the flue gas.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling tower dust removal devices, and in particular to a flue gas dust removal device for cooling towers. Background Technology

[0002] Cooling towers use water as a circulating coolant. They utilize the heat exchange between water and air to generate steam. The steam evaporates and carries away heat, achieving heat dissipation through evaporation, convection, and radiation. This process helps dissipate waste heat generated in industrial processes or refrigeration and air conditioning systems, thus lowering the water temperature and ensuring the normal operation of the system. However, nowadays, high-temperature flue gas often contains particulate matter and other impurities that are not treated before entering the cooling tower. This can cause wear and tear on the equipment inside the cooling tower, reducing the lifespan of components. Furthermore, when impurities mix with the water, they can clog the spray nozzles during water circulation, severely affecting the normal operation of the cooling tower. Utility Model Content

[0003] This utility model discloses a flue gas dust removal device for cooling towers, which solves the problem that if particles and other impurities in high-temperature flue gas enter the cooling tower directly without treatment, they will cause wear and tear on the equipment inside the cooling tower and affect the normal use of the cooling tower.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A flue gas dust removal device for cooling towers includes a tower body, a connecting frame connected to one side of the tower body, a collection frame connected to the bottom of the connecting frame, a rotatable filter cover with an open bottom inside the connecting frame, the bottom of the connecting frame contacting the bottom of the filter cover and having an opening corresponding to the open part of the filter cover; a flue gas inlet pipe rotatably connected to the filter cover and used to discharge flue gas into the filter cover is passed through the top of the connecting frame, a first cleaning brush for cleaning the inner wall of the filter cover is provided on the inner side of the filter cover, a lead screw for driving the first cleaning brush to rise and fall is provided inside the connecting frame, and a motor for driving the filter cover and the lead screw to rotate is provided on the connecting frame.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] After the high-temperature flue gas enters the filter hood inside the connecting frame through the inlet pipe, the filter hood filters out particles and other impurities as it passes through the gas and enters the tower body. The motor-driven rotation of the filter hood and lead screw changes the position of the filter hood near the connection between the connecting frame and the tower body, preventing excessive accumulation of impurities and blockage caused by a single part of the filter hood being constantly near this connection. As the lead screw rotates, the first cleaning brush repeatedly rises and falls, cleaning impurities adhering to the inner wall of the filter hood and causing them to fall into the collection frame. The filtered flue gas then enters the tower body through the connection between the tower body and the connecting frame. This invention effectively filters particles and other impurities in the flue gas and cleans the adhering impurities on the filter hood in real time, ensuring the filtration effect and preventing impurities from entering the cooling tower with the flue gas. Attached Figure Description

[0008] Figure 1 This is a front view structural diagram of the present invention;

[0009] Figure 2 This is a cross-sectional structural diagram of the connecting frame of this utility model;

[0010] Figure 3 This is a cross-sectional structural diagram of the connecting cylinder of this utility model.

[0011] In the diagram: 1. Tower body; 2. Connecting frame; 21. Connecting plate; 22. Smoke inlet pipe; 23. Motor; 24. Drive gear; 25. Baffle; 3. Collection frame; 31. Water inlet pipe; 32. Sewage pipe; 4. Filter cover; 41. Filter cylinder; 42. Cover cylinder; 5. First cleaning brush; 6. Lead screw; 61. Vertical rod; 62. Connecting cylinder; 63. Connecting block; 64. Lifting rod; 65. Connecting rod; 7. Second cleaning brush; 71. Fixing rod; 8. Sealing plate; 81. Spring; 82. Fixing beam; 9. Driven gear. Detailed Implementation

[0012] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figure 1 , Figure 2 and Figure 3As shown, this utility model provides a flue gas dust removal device for cooling towers, including a tower body 1, a connecting frame 2 connected to one side of the tower body 1, a collection frame 3 connected to the bottom of the connecting frame 2, a rotatable filter cover 4 with an open bottom inside the connecting frame 2, the bottom of the connecting frame 2 contacting the bottom of the filter cover 4 and having an opening corresponding to the open part of the filter cover 4; a flue gas inlet pipe 22 rotatably connected to the filter cover 4 and used to discharge flue gas into the filter cover 4 through the top of the connecting frame 2, a first cleaning brush 5 for cleaning the inner wall of the filter cover 4 inside the filter cover 4, a lead screw 6 for driving the first cleaning brush 5 to rise and fall inside the connecting frame 2 after rotation, and a motor 23 for driving the filter cover 4 and the lead screw 6 to rotate on the connecting frame 2. The top of the filter cover 4 is fixed with a cover cylinder 42 that is rotatably connected to the top of the connecting frame 2, and the bottom end of the smoke inlet pipe 22 passes through the inner side of the cover cylinder 42; both ends of the lead screw 6 are fixed with vertical rods 61, and the vertical rods 61 located at the top and bottom of the lead screw 6 are rotatably connected to the top of the connecting frame 2 and the bottom of the collection frame 3, respectively; the rotating shaft of the motor 23 is fixed with a driving gear 24 located in the connecting frame 2, and the cover cylinder 42 and the vertical rod 61 located at the top of the lead screw 6 are respectively fixed with driven gears 9 that mesh with the driving gear 24. The lead screw 6 is fitted with a connecting cylinder 62 to prevent impurities from contacting the lead screw 6, and the bottom of the connecting frame 2 has a round hole for the connecting cylinder 62 to pass through. The two vertical rods 61 pass through the top and bottom of the connecting cylinder 62, respectively, and a connecting block 63 that is threadedly connected to the lead screw 6 is fixed inside the connecting cylinder 62; a lifting rod 64 located in the collection frame 3 is fixed on the connecting cylinder 62, and a connecting rod 65 connected to the first cleaning brush 5 is fixed on the lifting rod 64.A slider is fixed inside the round hole at the bottom of the connecting frame 2. A slide rail adapted to the slider is provided on the connecting cylinder 62 (the slider and slide rail are not shown in the figure). When the lead screw 6 rotates, the slide rail on the connecting cylinder 62 cooperates with the slider in the round hole to ensure that the connecting cylinder 62 slides up and down more smoothly. The connecting frame 2 is connected to the tower body 1 through a pipe. The bottom of the collecting frame 3 is fixed with a support plate connected to the tower body 1 to increase the stability of the connecting frame 2. When the flue gas enters the filter cover 4 in the connecting frame 2 through the flue gas inlet pipe 22, the particles and other impurities in the flue gas are filtered by the filter cover 4 when the flue gas passes through the filter cover 4 and enters the tower body 1, preventing impurities from entering the tower body 1. At the same time, after the motor 23 starts, it drives the drive gear 24 to rotate. The drive gear 24 drives the cover cylinder 42 and the vertical rod 61 located above to rotate through two driven gears 9, so that the filter cover 4 and the lead screw 6 start to rotate. After the filter cover 4 rotates, it can prevent a certain part of itself from being in contact with the pipe for a long time. To address the problem of excessive impurity accumulation, the screw 6 rotates, which in turn drives the connecting cylinder 62 to move upwards or downwards via the connecting block 63 (the motor 23 is a servo motor, and its shaft rotates forwards and backwards via an external control system). The connecting cylinder 62 then allows the lifting rod 64 to move the first cleaning brush 5 via the connecting rod 65, cleaning the impurities adhering to the inner wall of the filter cover 4 and causing them to fall into the collection frame 3. When the connecting cylinder 62 moves upwards or downwards, it always covers the screw 6, preventing impurities from contacting the screw 6 and affecting its normal operation. Alternatively, depending on the actual situation, a partition fixed to the inner wall of the connecting frame 2 can be installed above the filter cover 4 (the partition is not shown in the figure), so that the driving gear 24 and the driven gear 9 are located above the partition. Holes are opened on the partition for the cover cylinder 42 and the vertical rod 61 located above to pass through, thus preventing impurities from contacting the driving gear 24 and the driven gear 9.

[0014] like Figure 1 and Figure 2As shown, a filter cylinder 41 is fixed at the top inside the filter cover 4, covering the exhaust end of the smoke inlet pipe 22. The bottom of the filter cylinder 41 is open. A second cleaning brush 7, which can be raised and lowered and is used to clean the inner wall of the filter cylinder 41, is provided inside the filter cover 4. A sealing plate 8 with an arc-shaped top surface is provided in the opening of the connecting frame 2 and is used to seal the bottom of the filter cylinder 41. A spring 81 is fixed at the bottom of the sealing plate 8. A fixing beam 82, which is fixed to the inner wall of the collection frame 3, is fixed at the bottom end of the spring 81. A fixing rod 71, which passes through the sealing plate 8 and is connected to the lifting rod 64, is fixed on the second cleaning brush 7. The fixing rod 71 includes a vertical rod body that passes through the sealing plate 8. A U-shaped connecting part, which is fixed to the top of the rod body and is fixed to the second cleaning brush 7, is used to make the sealing plate 8 move downward and open the bottom of the filter cylinder 41 after the connecting part of the rod body moves downward and contacts the sealing plate 8. The diameter of the filter holes on the filter cylinder 41 is larger than the diameter of the filter holes on the filter cover 4. The smoke inlet pipe 22 discharges the smoke into the filter cylinder 41 first. The filter cylinder 41 can perform the first filtration of impurities in the smoke, while the filter cover 4 can perform the second filtration of the smoke to ensure the filtration effect of the smoke. When the lifting rod 64 drives the second cleaning brush 7 to move downward through the fixed rod 71, the second cleaning brush 7 can clean the impurities adhering to the inner wall of the filter cylinder 41, so that the impurities fall on the top of the sealing plate 8. Subsequently, as the fixed rod 71 moves downward, when the connecting part on the fixed rod 71 contacts the top of the sealing plate 8, the sealing plate 8 can be pushed downward, so that the spring 81 is squeezed (there are at least two fixed beams 82, and each of the two fixed beams 82 has a set of springs 81). After the sealing plate 8 moves downward, the impurities cleaned out of the filter cylinder 41 can be discharged outside the filter cylinder 41, and the impurities on the top of the sealing plate 8 also slide down into the collection frame 3.

[0015] like Figure 1 and Figure 2As shown, a baffle 25 is fixed to the main body of the motor 23, which contacts the top of the connecting frame 2. The baffle 25 is fixed to the connecting frame 2 by bolts. The side of the connecting frame 2 away from the tower body 1 is open and a connecting plate 21 is fixed to it by bolts. The first cleaning brush 5 and the second cleaning brush 7 are respectively arranged in a ring. A water inlet pipe 31 and a sewage outlet pipe 32 are connected to the collection frame 3. The baffle 25 can block the part of the connecting frame 2 through which the motor 23 shaft passes, preventing flue gas leakage. When it is necessary to inspect and maintain the components inside the connecting frame 2, the connecting plate 21 can be disassembled to inspect the components inside the connecting frame 2. Water can be injected into the collecting frame 3 through the water inlet pipe 31 so that impurities can fall into the water after entering the collecting frame 3, preventing impurities from flying around in the collecting frame 3. The impurities in the collecting frame 3 can be discharged with the water through the drain pipe 32. The first cleaning brush 5 and the second cleaning brush 7 are arranged in a ring so that after the two cleaning brushes rise and fall once, they can clean the impurities on the inner wall of the filter cover 4 and the filter cylinder 41 in all directions, improving the cleaning efficiency.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flue gas dust removal device for cooling towers, comprising a tower body (1), characterized in that: A connecting frame (2) is connected to one side of the tower body (1), and a collection frame (3) is connected to the bottom of the connecting frame (2). A rotatable filter cover (4) with an open bottom is provided inside the connecting frame (2). The bottom of the connecting frame (2) contacts the bottom of the filter cover (4) and has an opening corresponding to the open part of the filter cover (4). A smoke inlet pipe (22) is rotatably connected to the filter cover (4) and used to discharge flue gas into the filter cover (4). A first cleaning brush (5) is provided on the inner side of the filter cover (4) for cleaning the inner wall of the filter cover (4). A screw (6) is provided inside the connecting frame (2) for driving the first cleaning brush (5) to rise and fall after rotation. A motor (23) is provided on the connecting frame (2) for driving the filter cover (4) and the screw (6) to rotate.

2. The flue gas dust removal device for cooling towers according to claim 1, characterized in that: The top of the filter cover (4) is fixed with a cover cylinder (42) that is rotatably connected to the top of the connecting frame (2), and the bottom end of the smoke inlet pipe (22) passes through the inner side of the cover cylinder (42); both ends of the lead screw (6) are fixed with vertical rods (61), and the vertical rods (61) at the top and bottom of the lead screw (6) are rotatably connected to the top of the connecting frame (2) and the bottom of the collection frame (3), respectively; the rotating shaft of the motor (23) is fixed with a drive gear (24) located in the connecting frame (2), and the cover cylinder (42) and the vertical rod (61) located at the top of the lead screw (6) are respectively fixed with driven gears (9) that mesh with the drive gear (24).

3. The flue gas dust removal device for cooling towers according to claim 2, characterized in that: The lead screw (6) is fitted with a connecting cylinder (62) to prevent impurities from contacting the lead screw (6). The bottom of the connecting frame (2) is provided with a round hole for the connecting cylinder (62) to pass through. Two vertical rods (61) pass through the top and bottom of the connecting cylinder (62) respectively. A connecting block (63) that is threadedly connected to the lead screw (6) is fixed inside the connecting cylinder (62). A lifting rod (64) located inside the collection frame (3) is fixed on the connecting cylinder (62). A connecting rod (65) that is connected to the first cleaning brush (5) is fixed on the lifting rod (64).

4. The flue gas dust removal device for cooling towers according to claim 3, characterized in that: The top of the filter cover (4) is fixed with a filter cylinder (41) that covers the exhaust end of the smoke inlet pipe (22). The bottom of the filter cylinder (41) is open. The inner side of the filter cylinder (41) is provided with a second cleaning brush (7) that can be raised and lowered and is used to clean the inner wall of the filter cylinder (41). The opening of the connecting frame (2) is provided with a sealing plate (8) with an arc-shaped top surface for sealing the bottom of the filter cylinder (41). A spring (81) is fixed to the bottom of the sealing plate (8). The bottom end of the spring (81) is fixed with a A fixed beam (82) is fixed to the inner wall of the collection frame (3); a fixed rod (71) is fixed on the second cleaning brush (7) and passes through the sealing plate (8) and is connected to the lifting rod (64). The fixed rod (71) includes a vertically arranged rod body that passes through the sealing plate (8). The top of the rod body is fixed with a U-shaped connecting part that is fixed to the second cleaning brush (7). After the connecting part of the rod body moves downward and contacts the sealing plate (8), it is used to move the sealing plate (8) downward and open the bottom of the filter cylinder (41).

5. The flue gas dust removal device for cooling towers according to claim 1, characterized in that: The motor (23) has a baffle (25) fixed on its main body that contacts the top of the connecting frame (2). The baffle (25) is fixed to the connecting frame (2) by bolts. The side of the connecting frame (2) away from the tower body (1) is open and is fixed with a connecting plate (21) by bolts.

6. The flue gas dust removal device for cooling towers according to claim 4, characterized in that: The first cleaning brush (5) and the second cleaning brush (7) are respectively arranged in a ring.

7. The flue gas dust removal device for cooling towers according to claim 1, characterized in that: The collection frame (3) is connected to an inlet pipe (31) and a drain pipe (32).

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