Adjustable closed tower air inlet grille

Abstract

The utility model discloses an adjustable closed tower air inlet grille, which belongs to the technical field of cooling towers and comprises a cooling tower main body, a first grille fixedly connected to the outer side wall of the cooling tower main body, a second grille slidably connected to the outer side wall of the cooling tower main body and a mounting frame fixedly connected to the outer side wall of the cooling tower main body. The outer side wall of the cooling tower body is fixedly connected with a motor, and the outer side wall of the cooling tower body is rotationally connected with a rotating rod. According to the adjustable closed tower air inlet grille, through cooperative use of the first grille, the second grille, the mounting frame, a motor, a rotating rod, a main gear, an adjusting plate, a synchronous rod, a connecting plate, a connecting rod and an auxiliary gear, the air inlet amount of the cooling tower main body can be conveniently controlled, meanwhile, the situation that when the air inlet amount is adjusted, multi-angle airflow directions appear is avoided, and the air inlet amount is more stable is avoided. Therefore, the situation that airflow collides after entering the cooling tower body, airflow turbulence is caused, the ideal air flowing order in the whole cooling tower is damaged, and even exchange and efficient discharge of heat are not facilitated is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, specifically, it relates to an adjustable closed-tower air inlet grille. Background Technology

[0002] Air intake grilles play an indispensable role in cooling towers. They ensure uniform airflow, filter various impurities, and provide good safety protection.

[0003] According to the public announcement (CN222086797U), a cooling tower air inlet grille is disclosed. This technology discloses "a grille frame, grille plates on the grille frame, and gear sets on the vertical walls on both sides of the grille frame. The grille frame has multiple slots along its height. The grille plates have multiple slots that are hinged one-to-one in the slots. The grille plates have multiple ventilation holes. Both ends of the multiple grille plates extend to the outside of the grille frame and are connected to the gear sets. The gear sets can drive the multiple grille plates to rotate synchronously, thereby changing the direction of the ventilation holes and thus changing the air intake volume." The device has the technical effect of changing the direction of the ventilation holes by using rotatable grille plates and gear sets that cooperate with them, thus making the air intake volume adjustable. It also has the technical effect of preventing special situations from affecting the cooling tower by using an addable filter.

[0004] However, in the aforementioned comparative documents, because the two adjacent gears rotate in opposite directions, the ventilation holes on the two adjacent grilles have different angles, resulting in inconsistent airflow directions. Airflows from different directions collide and converge directly in the initial stage of entering the cooling tower. This collision disrupts the originally orderly airflow path and distribution, preventing the airflow from diffusing and participating in the heat exchange process within the cooling tower in the expected, relatively stable manner. After the collision, local turbulence occurs in and around the collision area, a form of airflow disturbance. This local turbulence makes the airflow speed and direction extremely unstable and unpredictable within a small area, and it spreads to surrounding areas, further disrupting the airflow field over a larger area within the cooling tower. This destroys the ideal airflow order within the entire cooling tower, hindering uniform heat exchange and efficient heat removal.

[0005] To address the aforementioned issues, this application proposes an adjustable closed-tower air inlet grille. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes an adjustable closed-tower air inlet grille to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An adjustable closed-tower air inlet grille includes a cooling tower body. A first grille is fixedly connected to the outer wall of the cooling tower body, and a second grille is slidably connected to the outer wall of the cooling tower body. A mounting frame is fixedly connected to the outer wall of the cooling tower body, and a motor is fixedly connected to the outer wall of the cooling tower body. A rotating rod is rotatably connected to the outer wall of the cooling tower body. The motor is connected to the rotating rod via a bevel gear transmission mechanism on its output drive shaft. A main gear is fixedly connected to one end of the rotating rod. An adjusting plate is rotatably connected to the inner wall of the mounting frame, and a synchronizing rod is rotatably connected to one end of the adjusting plate. A connecting plate is rotatably connected to the outer wall of the cooling tower body, and a secondary gear is fixedly connected to the outer wall of the connecting plate. A connecting rod is rotatably connected to the outer wall of the connecting plate near the synchronizing rod, and the end of the connecting rod away from the connecting plate is rotatably connected to the outer wall of the synchronizing rod.

[0009] Preferably, the inner wall of the cooling tower body has a limiting hole, the top of the second grille is fixedly connected to a fixing plate, the inner wall of the fixing plate is slidably connected to a rod, the outer wall of the fixing plate is fixedly connected to a return spring, and the end of the return spring away from the fixing plate is fixedly connected to the outer wall of the rod. By setting the limiting hole, the fixing plate, the rod, and the return spring, it is convenient to adjust the position of the second grille.

[0010] Preferably, a limiting groove is formed on the outer side wall of the cooling tower body, the synchronizing rod is located inside the limiting groove, and the two outer walls of the synchronizing rod are in contact with the two inner walls of the limiting groove. By setting the limiting groove, it is convenient to restrict the movement position of the synchronizing rod and avoid the position of the synchronizing rod from shifting during the movement.

[0011] Preferably, a sliding groove is provided on the outer side wall of the cooling tower body, and a protrusion is fixedly connected to the outer side wall of the second grille near the cooling tower body. The outer side wall of the protrusion is adapted to the inner wall of the sliding groove. By setting the sliding groove and the protrusion, it is convenient to restrict the movement position of the second grille and prevent the second grille from detaching from the cooling tower body during movement.

[0012] Preferably, the outer side wall of the cooling tower body is provided with a receiving groove, and a sliding rod is fixedly connected to the outer side wall of the cooling tower body. The sliding rod is located inside the receiving groove, and a slider is slidably connected to the outer side wall of the sliding rod. A round rod is fixedly connected to the outer side wall of the slider. An insertion hole is provided on the outer side wall of the second grille, and the round rod is adapted to the insertion hole. By setting the receiving groove, sliding rod, slider, round rod, and insertion hole, and cooperating with the sliding groove and protrusion, it is convenient to restrict the movement direction of the second grille and prevent the second grille from rotating during movement.

[0013] Preferably, a spring is fixedly connected to the top of the slider, and the end of the spring away from the slider is fixedly connected to the outer wall of the cooling tower body. By setting the spring, it is easy to pull the second grid.

[0014] In summary, the technical effects and advantages of this utility model are as follows: This adjustable closed-tower air inlet grille, through the coordinated use of the first grille, second grille, mounting frame, motor, rotating rod, main gear, adjusting plate, synchronizing rod, connecting plate, connecting rod, and auxiliary gear, facilitates the control of the air intake volume of the cooling tower body. Simultaneously, it avoids multi-angle airflow directions when adjusting the air intake volume, thereby preventing airflow collisions after entering the cooling tower body, which would lead to airflow turbulence, disrupt the ideal airflow order inside the entire cooling tower, and hinder uniform heat exchange and efficient heat removal.

[0015] The second grille, receiving groove, sliding rod, slider, spring, round rod, insertion hole, and vibration generated by the operation of the cooling tower body are used in conjunction to facilitate the shaking and vibration of the second grille during use, reduce the residue of rainwater or water droplets on the second grille, and prevent the second grille located on the outside of the cooling tower body from freezing in areas or seasons with low temperatures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the second grille and related parts of this utility model;

[0018] Figure 3 This is a schematic diagram of the rotating rod and related parts of this utility model;

[0019] Figure 4 This is a schematic diagram of the adjustment plate and related parts of this utility model;

[0020] Figure 5 This is a schematic diagram of the secondary gear and related parts of this utility model;

[0021] Figure 6 This is a schematic diagram of the protrusion and related parts of this utility model;

[0022] Figure 7 This is a schematic diagram of the spring and related parts of this utility model.

[0023] In the picture:

[0024] 1. Cooling tower body; 2. First grille; 3. Second grille; 4. Mounting frame; 5. Motor; 6. Rotating rod; 7. Main gear; 8. Adjusting plate; 9. Synchronizing rod; 10. Connecting plate; 11. Connecting rod; 12. Secondary gear; 13. Limiting groove; 14. Sliding groove; 15. Protrusion; 16. Limiting hole; 17. Fixing plate; 18. Insert rod; 19. Return spring; 20. Receiving groove; 21. Sliding rod; 22. Sliding block; 23. Spring; 24. Round rod; 25. Insertion hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-5 An adjustable closed-tower air intake grille includes a cooling tower body 1. A first grille 2 is fixedly connected to the outer wall of the cooling tower body 1, and a second grille 3 is slidably connected to the outer wall of the cooling tower body 1. Both the first grille 2 and the second grille 3 are air intake grilles with the same blade angle. A mounting frame 4 is fixedly connected to the outer wall of the cooling tower body 1, located between the first grille 2 and the second grille 3. A motor 5 is fixedly connected to the outer wall of the cooling tower body 1, and a rotating rod 6 is rotatably connected to the outer wall of the cooling tower body 1. The motor 5 is connected to the rotating rod 6 via a bevel gear transmission mechanism on its output shaft. Two main gears 7 are fixedly connected to one end of the rotating rod 6, located at opposite ends of the rotating rod 6 and both main gears 7 are located outside the cooling tower body 1. Multiple adjusting plates 8 are rotatably connected to the inner wall of the mounting frame 4, arranged in a linear array. Inside the frame 4, one end of the adjusting plate 8 is rotatably connected to a synchronizing rod 9. There are two sets of synchronizing rods 9, which are located at both ends of the adjusting plate 8. Taking one set of synchronizing rods 9 as an example, the two synchronizing rods 9 in this set are rotatably connected to both sides of one end of multiple adjusting plates 8. When the two synchronizing rods 9 in this set move in opposite directions, they can drive the adjusting plate 8 to rotate. The outer wall of the cooling tower body 1 is rotatably connected to a connecting plate 10. The outer wall of the connecting plate 10 is fixedly connected to a secondary gear 12. There are two secondary gears 12, which mesh with two main gears 7 respectively. The outer wall of the connecting plate 10 near the synchronizing rod 9 is rotatably connected to a connecting rod 11. There are two sets of connecting rods 11. The end of the connecting rod 11 away from the connecting plate 10 is rotatably connected to the outer wall of the synchronizing rod 9. Taking one set of connecting rods 11 as an example, the two connecting rods 11 in this set are rotatably connected to the outer walls of the two synchronizing rods 9 near this set of connecting rods 11.

[0027] When adjusting the air intake during use, the motor 5 is started. The bevel gear transmission mechanism at the output end of the motor 5 drives the rotating rod 6 to rotate, which in turn drives the two main gears 7 to rotate synchronously. Furthermore, the two main gears 7 mesh with the two auxiliary gears 12, driving the two connecting plates 10 to rotate synchronously. When the two connecting plates 10 rotate, they drive the four connecting rods 11 at both ends of the two connecting plates 10 to move towards the top and bottom of the cooling tower body 1, respectively. The connecting rods 11 then drive the four synchronous rods 9 to move synchronously. Since the two ends of the multiple adjusting plates 8 are rotatably connected to the four synchronous rods 9, when the four synchronous rods 9 move, they drive the multiple adjusting plates 8 to rotate along their center lines, thereby adjusting the angle of the multiple adjusting plates 8 to achieve the adjustment of the air intake.

[0028] Reference Figure 6 The inner wall of the cooling tower body 1 has two limiting holes 16, which are symmetrically distributed about the symmetrical surface of the cooling tower body 1. A fixing plate 17 is fixedly connected to the top of the second grille 3. A rod 18 is slidably connected to the inner wall of the fixing plate 17. A protrusion 15 is provided at the end of the rod 18 away from the inner wall of the cooling tower body 1, facilitating adjustment of the position of the rod 18 by the operator. A return spring 19 is fixedly connected to the outer wall of the fixing plate 17. One end of the fixed plate 17 is fixedly connected to the outer wall of the insert rod 18. There are two of each of the fixed plate 17, insert rod 18, and return spring 19. The ends of the two insert rods 18 near the two limiting holes 16 are respectively adapted to the limiting holes 16. When the operator moves the two insert rods 18 toward the middle part of the second grille 3, the two return springs 19 can be compressed. At the same time, the ends of the two insert rods 18 near the limiting holes 16 are respectively moved out of the interior of the two limiting holes 16 to release the limitation on the second grille 3.

[0029] Reference Figure 5 The outer wall of the cooling tower body 1 is provided with limiting grooves 13. There are four limiting grooves 13. The four synchronous rods 9 are located inside the four limiting grooves 13 respectively. The distance between the ends of the four limiting grooves 13 is greater than the distance between the ends of the four synchronous rods 9. The outer walls on both sides of the four synchronous rods 9 are respectively attached to the inner walls on both sides of the four limiting grooves 13. The four limiting grooves 13 restrict the path of one end of the four synchronous rods 9 to prevent the angle of the four synchronous rods 9 from changing during the movement.

[0030] Reference Figure 6The outer wall of the cooling tower body 1 is provided with a sliding groove 14. There are two sliding grooves 14. The two sliding grooves 14 are located on the inner walls of the two sides of the cooling tower body 1 respectively. The second grille 3 is fixedly connected to the outer wall of the side of the cooling tower body 1 with a protrusion 15. There are two protrusions 15. The two protrusions 15 are located inside the two sliding grooves 14 respectively, and the outer wall of the protrusion 15 is adapted to the inner wall of the sliding groove 14.

[0031] Reference Figure 6 and Figure 7 The outer wall of the cooling tower body 1 is provided with a receiving groove 20. There are two receiving grooves 20, which are located on the inner walls of the two sides of the cooling tower body 1 respectively. Taking one side as an example, a sliding rod 21 is fixedly connected to the outer wall of the cooling tower body 1. The sliding rod 21 is located inside the receiving groove 20. A slider 22 is slidably connected to the outer wall of the sliding rod 21. A round rod 24 is fixedly connected to the outer wall of the slider 22. An insertion hole 25 is provided on the outer wall of the second grille 3. The round rod 24 is adapted to the insertion hole 25. The sliding rod 21, slider 22, spring 23, round rod 24, insertion hole 25 cooperate with the sliding groove 14 and protrusion 15 to limit the movement angle of the second grille 3 and prevent the second grille 3 from rotating during the movement.

[0032] Reference Figure 7 A spring 23 is fixedly connected to the top of the slider 22. There are two springs 23, which are located inside the two receiving slots 20 and are respectively located in the positions of the two sliders 22. The end of the spring 23 away from the slider 22 is fixedly connected to the outer wall of the cooling tower body 1. When the operator pulls the two plug rods 18 to release the restriction of the two plug rods 18 on the second grille 3, in a cold and humid environment, the second grille 3 is in direct contact with the cold outside air. When the outside air enters the cooling tower through the second grille 3, the water vapor in the air is easily condensed into small water droplets on the surface of the grille due to the low temperature of the second grille 3. If the ambient temperature is low enough, these small water droplets will freeze into ice. Since the cooling tower body 1 will vibrate when it is running, when the restriction of the second grille 3 is released, the second grille 3 will float up and down along the slide rod 21 under the action of the elastic force of the two springs 23. During the floating process, the rainwater residue on the second grille 3 is shaken off, thereby preventing the rainwater or water droplets from condensing into ice on the second grille 3, and thus preventing the ice from affecting the air intake.

[0033] Working principle: When the intake air volume needs to be adjusted, motor 5 is started. The bevel gear transmission mechanism at the output end of motor 5 drives the rotating rod 6 to rotate, which in turn drives the two main gears 7 to rotate synchronously. Furthermore, the two main gears 7 mesh with the two auxiliary gears 12, driving the two connecting plates 10 to rotate synchronously. When the two connecting plates 10 rotate, they cause the four connecting rods 11 at both ends of the connecting plates 10 to move towards the top and bottom of the cooling tower body 1, respectively. The connecting rods 11 then drive the four synchronizing rods 9 to move synchronously. Since the two ends of multiple adjusting plates 8 are rotatably connected to the four synchronizing rods 9, when the four synchronizing rods 9 move, they drive the multiple adjusting plates 8 to rotate along their center lines, thereby adjusting the air intake of the multiple adjusting plates 8. The angle is adjusted to regulate the intake air volume. At the same time, in cold and humid environments, the second grille 3 is in direct contact with the cold outside air. When the outside air enters the cooling tower through the second grille 3, the water vapor in the air easily condenses into small water droplets on the grille surface due to the low temperature of the second grille 3. If the ambient temperature is low enough, these small water droplets will freeze into ice. Since the cooling tower body 1 vibrates during operation, when the restriction of the second grille 3 is released, the second grille 3 will float up and down along the slide rod 21 under the action of the elastic force of the two springs 23. During the floating process, the rainwater residue on the second grille 3 is shaken off, thereby preventing rainwater or water droplets from condensing into ice on the second grille 3, and thus preventing ice formation from affecting the intake air.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable closed-tower air inlet grille, comprising a cooling tower body (1), characterized in that, A first grille (2) is fixedly connected to the outer wall of the cooling tower body (1), a second grille (3) is slidably connected to the outer wall of the cooling tower body (1), an installation frame (4) is fixedly connected to the outer wall of the cooling tower body (1), a motor (5) is fixedly connected to the outer wall of the cooling tower body (1), and a rotating rod (6) is rotatably connected to the outer wall of the cooling tower body (1). The motor (5) is connected to the rotating rod (6) through a bevel gear transmission mechanism set on the output end transmission shaft. One end of the rotating rod (6) is fixedly connected to the outer wall of the cooling tower body (1). A main gear (7) is fixedly connected to the inner wall of the mounting frame (4), an adjusting plate (8) is rotatably connected to the inner wall of the mounting frame (4), a synchronizing rod (9) is rotatably connected to one end of the adjusting plate (8), a connecting plate (10) is rotatably connected to the outer wall of the cooling tower body (1), a secondary gear (12) is fixedly connected to the outer wall of the connecting plate (10), a connecting rod (11) is rotatably connected to the outer wall of the connecting plate (10) near the synchronizing rod (9), and the end of the connecting rod (11) away from the connecting plate (10) is rotatably connected to the outer wall of the synchronizing rod (9).

2. The adjustable closed-tower air inlet grille according to claim 1, characterized in that, The cooling tower body (1) has a limit hole (16) on its inner side wall. The top of the second grille (3) is fixedly connected to a fixing plate (17). The inner side wall of the fixing plate (17) is slidably connected to a plug rod (18). The outer side wall of the fixing plate (17) is fixedly connected to a reset spring (19). The end of the reset spring (19) away from the fixing plate (17) is fixedly connected to the outer side wall of the plug rod (18).

3. The adjustable closed-tower air inlet grille according to claim 1, characterized in that, The cooling tower body (1) has a limiting groove (13) on its outer side wall. The synchronizing rod (9) is located inside the limiting groove (13), and the two outer walls of the synchronizing rod (9) are in contact with the two inner walls of the limiting groove (13).

4. An adjustable closed-tower air inlet grille according to claim 1, characterized in that, The outer wall of the cooling tower body (1) is provided with a sliding groove (14), and the second grille (3) is fixedly connected to a protrusion (15) on the outer wall of the side of the cooling tower body (1) near the cooling tower body (1). The outer wall of the protrusion (15) is adapted to the inner wall of the sliding groove (14).

5. An adjustable closed-tower air inlet grille according to claim 1, characterized in that, The outer side wall of the cooling tower body (1) is provided with a receiving groove (20). A sliding rod (21) is fixedly connected to the outer side wall of the cooling tower body (1). The sliding rod (21) is located inside the receiving groove (20). A slider (22) is slidably connected to the outer side wall of the sliding rod (21). A round rod (24) is fixedly connected to the outer side wall of the slider (22). An insertion hole (25) is provided on the outer side wall of the second grid (3). The round rod (24) is adapted to the insertion hole (25).

6. An adjustable closed-tower air inlet grille according to claim 5, characterized in that, A spring (23) is fixedly connected to the top of the slider (22), and the end of the spring (23) away from the slider (22) is fixedly connected to the outer wall of the cooling tower body (1).

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