Cooling tower evaporative water recovery device with louvred side walls and multi-sloped top cover

Abstract

The utility model discloses a kind of water recovery devices of water tower evaporation with louvered side wall and multi-inclined roof cover, including recycling cover shell body, the top of recycling cover shell body is equipped with multiple multi-inclined roof;The utility model is scraped frame, connecting frame, shaft, reciprocating screw rod, motor, mounting bracket and drive cylinder by design, motor drives drive cylinder to reciprocate along the axial direction of reciprocating screw rod, and then drive scraping frame reciprocate on louver piece, impurity and water film that stay on louver piece are scraped off in time, ensure that the high heat-conducting material of blade is always exposed in humid hot air, avoid heat exchange efficiency to drop due to pollution coverage, simultaneously, when low temperature in winter, water film that can be scraped off on blade surface in time, avoid water film freeze into ice, even if a small amount of thin ice appears, mechanical force of scraping frame can also crush it, prevent airflow interruption or structure cracking caused by ice block.

Description

Technical Field

[0001] This utility model belongs to the technical field of recycling devices, specifically relating to a cooling tower evaporation water recycling device with louvered sidewalls and a multi-sloped top cover. Background Technology

[0002] Cooling towers, as core circulating water cooling equipment in industries such as chemical and power, work by directly contacting water with air and utilizing the heat absorption of water evaporation to lower the water temperature. However, this process involves a large amount of evaporated water escaping into the atmosphere, causing serious water waste. For water-scarce areas or large industrial facilities, the annual water loss due to evaporation can reach thousands of tons, and water consumption costs account for a significant proportion of production and operating costs. Furthermore, the escaping water vapor forms "white plumes," causing visual pollution. To address the problem of wasted evaporation water, various recovery technologies have emerged in the industry. One approach involves using a condensation recovery hood fixed to the concrete shell or steel frame of the cooling tower via a support frame, completely covering the original fan outlet. Hot, humid air is exhausted from the tower, first passing through the louvered sidewalls. Some water vapor condenses on the low-temperature surface of the louvers, and water droplets slide down the blades. The airflow continues to rise, impacting the even cooler inner surface of the multi-sloped roof. Water vapor condenses into water droplets, which flow down the sloping inner wall of the roof and into a collection ditch installed at the bottom of each slope. All the collection ditches guide the water to the central collection trough, and finally the water flows back to the collection pool by gravity through the return pipe.

[0003] Although the existing cooling tower evaporation water recovery device with louvered sidewalls and multi-sloped roof can achieve evaporation water recovery through "louvered condensation and multi-sloped roof condensation", it has the following key defects in long-term industrial operation: (1) The humid and hot air carries impurities such as industrial dust and scale particles, which will gradually adhere to the surface of the louvers and form a dirt layer. This dirt layer will block the direct contact between the louvers and the humid and hot air, weakening the heat exchange effect. The water vapor that originally needs to be condensed through the low temperature surface of the blades cannot effectively release heat due to the dirt blockage, resulting in a reduction in condensation and a lower evaporation water recovery rate. The problem is that the louvers are prone to icing and blockage in low winter temperatures. When the ambient temperature is below 0°C, the water film condensed on the surface of the louvers will quickly freeze into thin ice. The ice layer will cover the surface of the blades, which will not only further block the condensation process, but also block the airflow channels of the louvers. This will prevent the hot and humid air in the cooling tower from being discharged smoothly, and may even cause local deformation of the recovery cover shell due to excessive airflow pressure. If the ice layer continues to thicken, the louvers may also crack and be damaged due to the expansion force of the ice. To address this issue, we propose a cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped top cover. Utility Model Content

[0004] The purpose of this utility model is to provide a cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped top cover, so as to solve the problem mentioned in the background art that the evaporation water recovery device with louvered sidewalls and a multi-sloped top cover has the effect of impurities and water film adhering on the louvered slats affecting the evaporation water recovery effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped roof, comprising a recovery cover shell, the top of which is equipped with multiple multi-sloped roofs, louvered windows on the sidewalls of the recovery cover shell, three louvered slats installed inside the louvered windows, a scraper frame slidably fitted onto the outer wall of the louvered slats, a connecting frame welded to the sidewall of the scraper frame, a movable hole at one end of the connecting frame, a shaft slidably fitted inside the movable hole, a movable frame connected to the shaft, and the movable frame fitted onto the outer wall of one end of the connecting frame, a mounting frame fixed to the surface of the recovery cover shell, a motor bolted to the mounting frame, a reciprocating screw fixed to the output end of the motor, a drive cylinder fitted onto the outer wall of the reciprocating screw, an inner block welded to the inner wall of the drive cylinder, one end of the inner block being located on the thread groove on the surface of the reciprocating screw, and the drive cylinder welded to the surface of the movable frame.

[0006] Preferably, the outer wall of the reciprocating lead screw is fitted with a support sleeve, and the end of the support sleeve is fixed with a bracket by welding. The bracket is fixed to the recycling hood housing by welding.

[0007] Preferably, the inner wall of the scraper frame is fixed with a rubber sleeve by adhesive bonding, and the rubber sleeve is fitted onto the surface of the louver slats.

[0008] Preferably, the longitudinal section of the connecting frame is an L-shaped structure, and the longitudinal section of the scraper frame is a U-shaped structure.

[0009] Preferably, the cross-section of the movable frame is U-shaped, and the longitudinal section of the shaft is circular.

[0010] Preferably, the outer wall of the shaft is provided with a circular groove, and a ball bearing is embedded in the circular groove.

[0011] Preferably, the mounting bracket has an L-shaped cross-section and a rectangular longitudinal section.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) Through the designed scraper frame, connecting frame, shaft, reciprocating screw, motor, mounting bracket and drive cylinder, the scraper frame is fitted onto the outer wall of the louver slats. The motor works, driving the reciprocating screw to rotate. The reciprocating screw and the inner block inside the drive cylinder cooperate to drive the drive cylinder to move back and forth along the axial direction of the reciprocating screw, thereby driving the scraper frame to move back and forth on the louver slats. This removes the impurities and water film remaining on the louver slats in a timely manner, ensuring that the high thermal conductivity material of the blades is always exposed to the humid and hot air, avoiding the decrease in heat exchange efficiency due to the coverage of pollutants. At the same time, in the low temperature of winter, the water film on the surface of the blades can be scraped off in time to prevent the water film from freezing into ice. Even if a small amount of thin ice appears, the mechanical force of the scraper frame can break it, preventing airflow interruption or structural cracking caused by ice blockage. The designed support and bracket support the suspended end of the reciprocating screw, preventing the reciprocating screw from tilting and affecting the reciprocating transmission effect. The designed rubber sleeve has good flexibility and elasticity, so that the inner wall of the rubber sleeve is always in contact with the surface of the louver slats under its own elastic deformation, avoiding gaps between the scraper frame and the louver slats, which would reduce the water scraping and dust removal effect. The designed ball bearings are embedded in the surface of the shaft, ensuring that the shaft slides in the movable hole of the connecting frame without being affected by frictional resistance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 Enlarged view of point A in the image;

[0016] Figure 3 This is a perspective view of the assembly of the connecting frame, movable frame, and drive cylinder of this utility model;

[0017] Figure 4 This is a partial sectional view of the assembly of the scraper frame, connecting frame, movable frame, and reciprocating lead screw of this utility model.

[0018] Figure 5 This is a top sectional view of the assembly of the reciprocating lead screw, drive cylinder, movable frame, and shaft of this utility model;

[0019] In the diagram: 1. Recycling hood housing; 2. Multi-sloped roof; 3. Connecting frame; 4. Reciprocating screw; 5. Motor; 6. Mounting frame; 7. Louvered slats; 8. Scraper frame; 9. Rubber sleeve; 10. Louvered window; 11. Drive cylinder; 12. Movable hole; 13. Movable frame; 14. Inner block; 15. Shaft; 16. Support cylinder; 17. Bracket; 18. Ball bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped roof, including a recovery cover shell 1, a multi-sloped roof 2 installed on the top of the recovery cover shell 1, louvered windows 10 opened on the sidewalls of the recovery cover shell 1, three louvered slats 7 installed inside the louvered windows 10, a scraper frame 8 slidably fitted on the outer wall of the louvered slats 7, a connecting frame 3 fixed to the sidewall of the scraper frame 8 by welding, and a movable hole 12 opened at one end of the connecting frame 3, the interior of the movable hole 12 being slidably fitted with a scraper frame 8. A shaft 15 is provided, and a movable frame 13 is connected to the shaft 15. The movable frame 13 is sleeved on the outer wall of one end of the connecting frame 3. A mounting frame 6 is fixed to the surface of the recovery cover housing 1. A motor 5 is bolted to the mounting frame 6. A reciprocating lead screw 4 is fixed to the output end of the motor 5. A drive cylinder 11 is sleeved on the outer wall of the reciprocating lead screw 4. An inner block 14 is fixed to the inner wall of the drive cylinder 11 by welding. One end of the inner block 14 is located on the thread groove on the surface of the reciprocating lead screw 4. The drive cylinder 11 is fixed to the surface of the movable frame 13 by welding. The cross-section of the mounting bracket 6 is L-shaped, the longitudinal section of the mounting bracket 6 is rectangular, the longitudinal section of the connecting bracket 3 is L-shaped, the longitudinal section of the scraper frame 8 is U-shaped, the cross-section of the movable bracket 13 is U-shaped, and the longitudinal section of the shaft 15 is circular. Through the designed scraper frame 8, connecting bracket 13, shaft 15, reciprocating screw 4, motor 5, mounting bracket 6, and drive cylinder 11, the scraper frame 8 is fitted onto the outer wall of the louver slat 7. The motor 5 operates, driving the reciprocating screw 4 to rotate. The reciprocating screw 4 and the inner block 14 inside the drive cylinder 11 cooperate. The drive cylinder 11 is driven to move back and forth along the axis of the reciprocating screw 4, which in turn drives the scraper frame 8 to move back and forth on the louver 7, so as to scrape away the impurities and water film remaining on the louver 7 in time, ensuring that the high thermal conductivity material of the blades is always exposed to the humid and hot air, and avoiding the decrease in heat exchange efficiency due to the coverage of pollutants. At the same time, in the low temperature of winter, the water film on the surface of the blades can be scraped away in time to prevent the water film from freezing into ice. Even if a small amount of thin ice appears, the mechanical force of the scraper frame can break it, preventing airflow interruption or structural cracking caused by ice blockage.

[0023] In this embodiment, preferably, a support cylinder 16 is sleeved on the outer wall of the reciprocating screw 4, and a bracket 17 is fixed to the end of the support cylinder 16 by welding. The suspended end of the reciprocating screw 4 is supported by the designed support cylinder 16 and bracket 17 to prevent the reciprocating screw 4 from tilting and affecting the reciprocating transmission effect. The bracket 17 is fixed to the recycling cover shell 1 by welding.

[0024] In this embodiment, preferably, the inner wall of the scraper frame 8 is fixed with a rubber sleeve 9 by adhesive bonding. The rubber sleeve 9 is fitted onto the surface of the louver slat 7. The rubber sleeve 9 is designed to have good flexibility and elasticity, so that the inner wall of the rubber sleeve 9 is always in contact with the surface of the louver slat 7 under its own elastic deformation, thus avoiding gaps between the scraper frame 8 and the louver slat 7 and thus reducing the water scraping and dust removal effect.

[0025] In this embodiment, preferably, a circular groove is provided on the outer wall of the shaft 15, and a ball bearing 18 is embedded in the circular groove. Through the design of the ball bearing 18, the ball bearing 18 is embedded in the surface of the shaft 15, ensuring that the shaft 15 slides in the movable hole 12 of the connecting frame 3 without being affected by frictional resistance.

[0026] The working principle and usage process of this utility model are as follows: The recycling cover 1 is fixed to the concrete shell or steel frame of the cooling tower through the support frame structure, completely covering the original fan outlet of the cooling tower. When the cooling tower is running, the hot and humid air inside is discharged upward under the action of the fan, first entering the interior of the recycling cover, and preferentially passing through the louvered window 10 on the side wall.

[0027] The primary condensing louver slats 7 are made of a high thermal conductivity metal (such as aluminum alloy), and their surface temperature is lower than the dew point temperature of the humid air. When the humid air flows through the louver slats 7, some water vapor releases heat and condenses on the slat surface, forming tiny water droplets. These droplets slide down the slats under gravity, eventually flowing into the water collection structure (such as a water collection trough) below the louver window. The airflow, after being initially cooled and dehumidified by the louver slats 7, continues to flow upwards and impacts the inner surface of the multi-sloped roof 2. The multi-sloped roof 2 also uses... Made of low-temperature, high-thermal-conductivity material and designed with a multi-sloped surface structure (increasing the condensation area), residual water vapor in the airflow condenses into a large amount of water droplets on the inner surface of the roof. The water droplets slide down the sloping surface of the roof quickly and flow into the water collection ditch pre-set at the bottom of each slope. All water collection channels are connected to the central water collection tank through pipes. The condensate collected in the central water collection tank (i.e., the recovered evaporation water) is recycled and reused. It flows back to the water collection pool of the cooling tower by gravity through the return pipe and re-enters the cooling tower circulation system, realizing the reuse of water resources and reducing industrial water consumption.

[0028] This invention solves the problems of dirt accumulation and icing in existing devices through a linkage structure of "motor-reciprocating lead screw-scraper frame". The specific process is as follows:

[0029] A motor 5 is fixed on the mounting bracket 6 on the surface of the recycling hood housing 1. After the motor 5 is started, the output shaft of the motor 5 drives the reciprocating screw 4 to rotate. The drive cylinder 11 is sleeved on the outer wall of the reciprocating screw 4, and an inner block 14 is fixed on its inner wall by welding. One end of the inner block 14 is embedded in the spiral groove on the surface of the reciprocating screw 4. The rotational motion of the reciprocating screw 4 is converted into the reciprocating linear motion of the drive cylinder 11 along the axial direction of the reciprocating screw 4 through the cooperation of the "groove-inner block".

[0030] The drive cylinder 11 is fixed to the movable frame 13 by welding. When the drive cylinder 11 moves back and forth, it drives the movable frame 13 to move synchronously. The movable frame 13 has a shaft 15 inside. The shaft 15 passes through the movable hole 12 at one end of the connecting frame 3. The shaft 15 and the movable frame 13 are movably connected, which can ensure that the position of the connecting frame 3 can be slightly adjusted when it moves along the arc. When the connecting frame 3 moves back and forth with the movable frame 13, it will drive the scraper frame 8 to slide back and forth along the surface of the louver slat 7. It can thoroughly scrape off the dirt and residual water film on the surface of the slat. The scraped dirt slides down with the water droplets to the water collection structure, ensuring that the high thermal conductivity surface of the louver slat is always exposed and maintaining efficient condensation. In winter, the back and forth sliding of the scraper frame 8 can break the thin ice that has just formed on the surface of the slat in time, avoiding the accumulation of ice layer that blocks the louver window, and at the same time preventing water film retention and freezing that could damage the slat.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped roof, comprising a recovery cover shell (1), wherein the top of the recovery cover shell (1) is provided with multiple multi-sloped roofs (2), and the sidewalls of the recovery cover shell (1) are provided with louvered windows (10), wherein three louvered slats (7) are installed inside the louvered windows (10), characterized in that: The outer wall of the louver slat (7) is fitted with a scraper frame (8) through a sliding sleeve. The side wall of the scraper frame (8) is fixed with a connecting frame (3) by welding. One end of the connecting frame (3) is provided with a movable hole (12). A shaft (15) is slidably arranged inside the movable hole (12). A movable frame (13) is connected to the shaft (15), and the movable frame (13) is fitted on the outer wall of one end of the connecting frame (3). The surface of the recycling cover housing (1) is fixed with a mounting frame (6). A motor (5) is installed on the mounting frame (6) by bolts. A reciprocating screw (4) is installed and fixed at the output end of the motor (5). A drive cylinder (11) is fitted on the outer wall of the reciprocating screw (4). An inner block (14) is fixed on the inner wall of the drive cylinder (11) by welding. One end of the inner block (14) is located on the thread groove on the surface of the reciprocating screw (4). The drive cylinder (11) is fixed on the surface of the movable frame (13) by welding.

2. The evaporation water recovery device for a cooling tower with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The outer wall of the reciprocating screw (4) is fitted with a support cylinder (16), and the end of the support cylinder (16) is fixed with a bracket (17) by welding. The bracket (17) is fixed to the recycling cover shell (1) by welding.

3. The evaporation water recovery device for a cooling tower with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The inner wall of the scraper frame (8) is fixed with a rubber sleeve (9) by adhesive bonding, and the rubber sleeve (9) is fitted onto the surface of the louver slats (7).

4. The evaporation water recovery device for a cooling tower with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The longitudinal section of the connecting frame (3) is an L-shaped structure, and the longitudinal section of the scraping frame (8) is a square-shaped structure.

5. A cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The cross-section of the movable frame (13) is U-shaped, and the longitudinal section of the shaft (15) is circular.

6. The evaporation water recovery device for a cooling tower with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The outer wall of the shaft (15) is provided with a circular groove, and a ball bearing (18) is embedded in the circular groove.

7. A cooling tower evaporation water recovery device with louvered sidewalls and a multi-sloped top cover according to claim 1, characterized in that: The mounting bracket (6) has an L-shaped cross-section and a rectangular longitudinal section.

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