Wet curtain anti-blocking structure of cooling tower

Abstract

The utility model relates to the technical field of cooling towers, in particular to a wet curtain anti-blocking structure of a cooling tower, which comprises a cooling tower, the cooling tower comprises a case, and air inlets are arranged on the left side and the right side of the bottom of the case; and the air inlet assembly is fixedly installed on the outer side of the air inlet, and the end of the air inlet assembly is connected with a dust removal assembly. According to the utility model, the induced draft fan works, negative pressure is generated at the dust removal box and the second air pipe, external air is sucked from the second air pipe, and the air flow direction is changed by utilizing the dust blocking shutter, so that most dust particles are blocked by utilizing inertia, and then the dust particles pass through the tail end filter screen to remove small particles so as to ensure the air to be clean and realize the purification of the air; finally, the air enters the cooling tower to cool the cooling water; part of wet air exhausted by the cooling tower is sucked in through the air return pipe, the air inlet humidity is increased, the wet air can increase the weight of dust and improve the dust removal efficiency, and meanwhile the wet air can reduce water loss in the cooling process.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a wet curtain anti-blocking structure for a cooling tower. Background Art

[0002] A cooling tower is an evaporation cooling device that uses water as a circulating coolant. Utilizing the difference in horizontal pressure in the air, heat and mass transfer occur through the contact between water and air flow. Water evaporates and absorbs heat to become water vapor, thereby reducing the temperature of the cooling water.

[0003] In the prior art, during the operation of a cooling tower, air needs to be continuously introduced from the outside. The cooling water flows down through the packing inside the cooling tower from top to bottom, and the air passes through the packing from bottom to top. Heat exchange occurs between the two at the packing. In some areas with relatively dry climates and more sandy dust air, the dry climate can improve the performance of the cooling tower and increase the internal heat exchange efficiency, but it will increase water consumption. At the same time, the sandy dust weather will cause the packing inside the cooling tower to scale and even become blocked. Sediment will also accumulate in the water collecting tray, leading to the growth of microorganisms and deteriorating the quality of the cooling water. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a wet curtain anti-blocking structure for a cooling tower.

[0005] The technical solution of the utility model is as follows:

[0006] A wet curtain anti-blocking structure for a cooling tower, comprising:

[0007] A cooling tower, which includes a chassis. Air inlets are provided on the left and right sides at the bottom of the chassis, an exhaust fan is provided at the top of the chassis, and an exhaust hood is provided above the exhaust fan. The exhaust fan is used to discharge the wet air inside the chassis.

[0008] An air inlet assembly, which is fixedly installed outside the air inlets. The air inlet assembly includes an induced draft fan, which is used to blow air into the air inlets. The front end of the induced draft fan is connected to a dust removal assembly through a first air duct.

[0009] The dust removal assembly includes a dust removal box. A plurality of dust blocking louvers are rotatably installed inside the dust removal box. The dust blocking louvers penetrate through the dust removal box and are connected to an adjustment assembly. The adjustment assembly is used to adjust the angle of the dust blocking louvers. A second air duct is provided at the front end of the dust removal box, and the second air duct is connected to the exhaust hood through a return air duct above.

[0010] Preferably, a water collecting tray is provided at the bottom end of the chassis. A water inlet pipe is provided on the left side of the water collecting tray. The water inlet pipe penetrates through the water collecting tray and extends into the chassis. A drain pipe is fixedly installed on the right side of the water collecting tray.

[0011] Preferably, air guide hoods are fixedly installed on both the front and rear sides of the induced draft fan. The rear air guide hood is fixedly connected to the air inlet, and the front air guide hood is connected to the first air duct.

[0012] Preferably, two groups of insertion slots are provided inside the first air duct. A final filter screen is slidably installed in each insertion slot, and the side of the final filter screen penetrates through the first air duct.

[0013] Preferably, a dust discharge pipe is fixedly installed below the dust removal box, and the dust blocking louvers are located above the dust discharge pipe.

[0014] Preferably, the adjustment assembly includes an adjustment motor. The output shaft of the adjustment motor is connected to a synchronous belt drive device. The synchronous belt drive device is fixedly connected to the end of the dust blocking louvers. A protective cover is provided outside the adjustment motor and the synchronous belt drive device.

[0015] Preferably, an air duct protection net is fixedly installed inside the front end of the second air duct, and the return air duct is located between the air duct protection net and the dust removal box.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the present utility model, by using the induced draft fan to work, negative pressure is generated at the dust removal box and the second air duct, and external air is inhaled from the second air duct. The dust blocking louvers are used to change the air flow direction, so as to block most dust particles by inertia. Then, through the final filter screen, tiny particles are removed to ensure clean air, realizing the purification of air. Finally, the air enters the cooling tower to cool the cooling water; a part of the wet air discharged from the cooling tower is inhaled by the return air duct to increase the inlet air humidity. The humid air can increase the weight of dust and improve the dust removal efficiency. At the same time, the humid air can reduce the water loss during the cooling process. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the sectional structural schematic diagram of the cooling tower in the present utility model;

[0020] Figure 3 is the structural schematic diagram of the air inlet assembly in the present utility model;

[0021] Figure 4 is the structural schematic diagram of the dust removal assembly in the present utility model;

[0022] Figure 5 is the second structural schematic diagram of the dust removal assembly in the present utility model.

[0023] The meanings of the various reference numerals in the figure are as follows:

[0024] 1. Cooling tower; 11. Chassis; 12. Air inlet; 13. Exhaust fan; 14. Exhaust hood; 15. Water sump; 16. Water inlet pipe; 17. Drain pipe;

[0025] 2. Air inlet assembly; 21. Induced draft fan; 22. Deflector; 23. First air duct; 24. Insertion slot; 25. Final stage filter screen;

[0026] 3. Dust removal assembly; 31. Dust removal box; 32. Dust discharge pipe; 33. Dust blocking louvers; 34. Adjusting motor; 35. Synchronous belt drive; 36. Protective cover; 37. Second air duct; 38. Air duct protection net; 39. Return air duct. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5 , the above technical solutions of the present invention will be described in detail through the following embodiments:

[0031] A wet curtain anti-blocking structure for a cooling tower, comprising:

[0032] Cooling tower 1, the cooling tower 1 includes a chassis 11, air inlets 12 are provided on the left and right sides of the bottom of the chassis 11, an exhaust fan 13 is fixedly installed on the top of the chassis 11 by bolts, and an exhaust hood 14 is fixedly installed above the exhaust fan 13 by bolts. The exhaust fan 13 is used to discharge the steam inside the chassis 11.

[0033] When the exhaust fan 13 works, it can discharge the air inside the chassis 11, and the exhaust hood 14 is used to limit the flow direction of the discharged air.

[0034] At the bottom of the chassis 11, a water collecting tray 15 is welded. On the left side of the water collecting tray 15, a water inlet pipe 16 is welded. The water inlet pipe 16 passes through the water collecting tray 15 and extends into the chassis 11. On the right side of the water collecting tray 15, a drain pipe 17 is welded.

[0035] The water inlet pipe 16 is used to inject high-temperature cooling water into the chassis 11. The water collecting tray 15 is used to hold the cooled cooling water. The drain pipe 17 is used to discharge the low-temperature cooling water.

[0036] An air inlet assembly 2, the air inlet assembly 2 is fixedly installed outside the air inlet 12. The air inlet assembly 2 includes an air guiding fan 21. The air guiding fan 21 is used to blow air into the air inlet 12. The front end of the air guiding fan 21 is connected to a dust removal assembly 3 through a first air duct 23;

[0037] The air guiding fan 21 is used to blow air into the air inlet 12.

[0038] On the front and rear sides of the air guiding fan 21, flow guiding covers 22 are fixedly installed by bolts. The rear flow guiding cover 22 is fixedly connected to the air inlet 12 by bolts. The front flow guiding cover 22 is connected to the first air duct 23 by bolts.

[0039] The flow guiding cover 22 is used to restrict the air flow direction.

[0040] Inside the first air duct 23, two groups of insertion slots 24 are welded. Inside each group of insertion slots 24, a terminal filter screen 25 is slidably installed. The side of the terminal filter screen 25 passes through the first air duct 23.

[0041] The terminal filter screen 25 is used to filter the air. The air guiding fan 21 is provided to increase the air flow rate, eliminate the obstruction of the terminal filter screen 25 to the air flow, and ensure the air intake volume.

[0042] The terminal filter screen 25 can be pulled out from the first air duct 23, which is convenient for replacement and cleaning.

[0043] The dust removal assembly 3 includes a dust removal box 31. Inside the dust removal box 31, a number of dust blocking louvers 33 are rotatably installed. The dust blocking louvers 33 pass through the dust removal box 31 and are connected to an adjustment assembly. The adjustment assembly is used to adjust the angle of the dust blocking louvers 33. At the front end of the dust removal box 31, a second air duct 37 is provided. Above the second air duct 37, it is connected to the exhaust hood 14 through a return air duct 39.

[0044] The suction force generated by the air guiding fan 21 can be transmitted along the dust removal box 31 to the second air duct 37, forming a negative pressure at the second air duct 37.

[0045] A number of dust blocking louvers 33 are arranged vertically in a group. There are gaps between adjacent dust blocking louvers 33. The dust blocking louvers 33 form a certain angle with the vertical direction.

[0046] Air enters the second air duct 37 from the outside and is then blocked by the dust-blocking louvers 33. In order to bypass the dust-blocking louvers 33, the airflow direction changes rapidly. Due to inertia, the heavier dust particles collide with the dust-blocking louvers 33 and are separated from the airflow. After being blocked by multiple groups of dust-blocking louvers 33, most of the dust particles are removed from the airflow. The airflow enters the first air duct 23 and is filtered by the end filter screen 25.

[0047] A dust discharge pipe 32 is fixedly installed below the dust removal box 31 by bolts, and the dust-blocking louvers 33 are located above the dust discharge pipe 32.

[0048] The dust particles blocked by the dust-blocking louvers 33 will fall into the dust discharge pipe 32 and then be discharged.

[0049] The adjustment assembly includes an adjustment motor 34. The output shaft of the adjustment motor 34 is connected with a synchronous belt drive device 35. The synchronous belt drive device 35 is fixedly connected to the end of the dust-blocking louvers 33. A protective cover 36 is provided outside the adjustment motor 34 and the synchronous belt drive device 35.

[0050] The adjustment motor 34 is fixedly installed on the top of the dust removal box 31 by bolts. When the adjustment motor 34 works, it can drive the dust-blocking louvers 33 to rotate through the synchronous belt drive device 35, thereby adjusting the angle of the dust-blocking louvers 33. In non-sandstorm weather, the dust-blocking louvers 33 are adjusted to the horizontal position, which can reduce the obstruction to the airflow and increase the airflow velocity.

[0051] A duct guard net 38 is welded to the inner side of the front end of the second air duct 37, and the return air duct 39 is located between the duct guard net 38 and the dust removal box 31.

[0052] The duct guard net 38 is used to prevent large-volume foreign objects from entering the second air duct 37 and damaging the dust-blocking louvers 33.

[0053] Both ends of the return air duct 39 are welded to the second air duct 37 and the exhaust hood 14 respectively. When the outside air is inhaled into the second air duct 37, the negative pressure in the second air duct 37 can suck part of the steam discharged from the exhaust hood 14 through the return air duct 39 and mix it with the dry air to increase the intake humidity. Increasing the air humidity can increase the weight of the dust and improve the dust removal efficiency. At the same time, it can realize the recycling of water and reduce the water consumption during the cooling process.

[0054] In this embodiment, when the operator uses this equipment, high-temperature cooling water is injected into the machine box 11 through the water inlet pipe 16.

[0055] Control the exhaust fan 13 and the induced draft fan 21 to work. The induced draft fan 21 injects air into the machine box 11. The airflow exchanges heat with the high-temperature cooling water to generate wet air, and the exhaust fan 13 discharges the wet air in the machine box 11.

[0056] The cooled cooling water falls into the water collecting tray 15 and then is discharged from the drain pipe 17.

[0057] When the induced draft fan 21 sucks in the outside air, the air will first pass through the air duct guard net 38; enter the second air duct 37. At the same time, a part of the wet air discharged by the exhaust fan 13 will enter the second air duct 37 through the return air duct 39.

[0058] The dust-containing air and the water vapor in the wet air are mixed, increasing the air humidity. At the same time, the dust aggregates into larger particles under the action of the water vapor, increasing in weight.

[0059] The wetted dust-containing air enters the dust removal box 31 and is blocked by the dust blocking louvers 33. In order to bypass the dust blocking louvers 33, the air flow direction changes rapidly. Due to inertia, the heavier dust particles collide with the dust blocking louvers 33 and are separated from the air flow. After being blocked by multiple groups of dust blocking louvers 33, most of the dust particles are removed from the air flow. The air flow enters the first air duct 23 and is filtered by the end filter screen 25 to become clean air.

[0060] The dust particles blocked by the dust blocking louvers 33 will fall into the dust discharge pipe 32 and then be discharged.

[0061] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling tower wet curtain anti-blocking structure, characterized in that: include: A cooling tower (1), the cooling tower (1) comprising a chassis (11), air inlets (12) being arranged on the left and right sides of the bottom of the chassis (11), an exhaust fan (13) being arranged on the top of the chassis (11), an exhaust hood (14) being arranged above the exhaust fan (13), the exhaust fan (13) being used to discharge humid air inside the chassis (11); An air inlet assembly (2), the air inlet assembly (2) being fixedly mounted on the outside of the air inlet (12), the air inlet assembly (2) comprising an induced draft fan (21), the induced draft fan (21) being used to blow air toward the air inlet (12), the front end of the induced draft fan (21) being connected to a dust removal assembly (3) via a first air duct (23); The dust removal assembly (3) comprises a dust removal box (31), a plurality of dust shielding louvers (33) are rotatably mounted in the dust removal box (31), the dust shielding louvers (33) penetrate the dust removal box (31) and are connected to an adjustment assembly, the adjustment assembly is used to adjust the angle of the dust shielding louvers (33), a second air duct (37) is provided at the front end of the dust removal box (31), and the second air duct (37) is connected to the exhaust hood (14) via a return air duct (39) above.

2. A cooling tower wet curtain anti-blocking structure according to claim 1, characterized in that: A water collection tray (15) is provided at the bottom end of the chassis (11), a water inlet pipe (16) is provided on the left side of the water collection tray (15), the water inlet pipe (16) penetrates the water collection tray (15) and extends into the chassis (11), and a drainage pipe (17) is fixedly installed on the right side of the water collection tray (15).

3. The wet curtain anti-blocking structure of a cooling tower according to claim 1, characterized in that: The induced draft fan (21) is fixedly provided with air guide covers (22) on both the front and rear sides; the rear air guide cover (22) is fixedly connected to the air inlet (12); and the front air guide cover (22) is connected to the first air duct (23).

4. A cooling tower wet curtain anti-blocking structure as claimed in claim 3, characterized in that: Two groups of insertion slots (24) are provided inside the first air duct (23), and a final filter screen (25) is slidably installed in each group of the insertion slots (24), and the side surface of the final filter screen (25) passes through the first air duct (23).

5. The wet curtain anti-blocking structure of a cooling tower according to claim 1, characterized in that: A dust exhaust pipe (32) is fixedly installed below the dust removal box (31), and the dust blocking louver (33) is located above the dust exhaust pipe (32).

6. The wet curtain anti-blocking structure of a cooling tower according to claim 1, characterized in that: The adjustment component comprises an adjustment motor (34), the output shaft of the adjustment motor (34) is connected to a synchronous belt transmission device (35), the synchronous belt transmission device (35) is fixedly connected to the end of the dust shutter (33), and a protective cover (36) is provided outside the adjustment motor (34) and the synchronous belt transmission device (35).

7. The wet curtain anti-blocking structure of a cooling tower according to claim 1, characterized in that: An air duct protection net (38) is fixedly installed on the inner side of the front end of the second air duct (37), and the return air duct (39) is located between the air duct protection net (38) and the dust removal box (31).

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