Automatic anti-freezing device for closed cooling tower

Abstract

The utility model discloses an automatic anti -freezing device of closed cooling tower, including closed cooling tower, the closed cooling tower one side wall upper end reservation inlet pipe. Advantageous effect lies in: the utility model discloses a set of lifting mechanism that is composed of drive motor, screw rod, lifting plate, guide rod and linkage frame is set up, when the heating rod is not put into use, the heating rod can be in the protective box while linkage frame seals the through cavity, on one hand can avoid its always being in the inlet pipe and outlet pipe and causing scale on its surface, guarantees its heating efficiency, on the other hand can be convenient for its maintenance, guarantees its heating performance when putting in, and when needing to put in, can drive screw rod to rotate through drive motor, and then make lifting plate move under the effect of screw thread and guide rod and drive heating rod to move and make it be in the inlet pipe and drain pipe and heat cooling water, can make it put into use fast, guarantee its anti -freezing effect, has higher use performance.

Description

Technical Field

[0001] This utility model relates to the technical field of antifreeze devices for closed cooling towers, and specifically to an automatic antifreeze device for closed cooling towers. Background Technology

[0002] Closed-circuit cooling towers (also called evaporative air coolers, closed-loop cooling towers, or enclosed cooling towers) place tubular heat exchangers inside the tower. Cooling is achieved through heat exchange between circulating air, external spray water, and internal circulating water. Because the circulating water circulates in a closed loop, water quality is protected from contamination, ensuring efficient operation of the main equipment and extending its service life. However, closed-circuit cooling towers require automatic antifreeze devices. Existing automatic antifreeze devices for closed-circuit cooling towers use heating rods installed at the inlet and outlet. When the outside temperature drops below a set value, the heating rods heat the water to prevent freezing. However, this method suffers from scale buildup on the surface of the heating rods when not in use, as they remain inside the pipes, affecting heating efficiency and maintenance. This results in low antifreeze performance. Therefore, there is an urgent need for an automatic antifreeze device for closed-circuit cooling towers to address these issues. Summary of the Invention

[0003] (a) Technical problems to be solved The technical problem to be solved by this utility model is to provide an automatic antifreeze device for closed cooling towers, based on the current state of the technology.

[0004] (II) Technical Solution This utility model is achieved through the following technical solution: This utility model proposes an automatic antifreeze device for a closed cooling tower, including a closed cooling tower. An inlet pipe is pre-installed at the upper end of one side wall of the closed cooling tower, and an outlet pipe is pre-installed at the bottom end of one side wall. Protective boxes are installed on both the outlet pipe and the inlet pipe. Through cavities are opened at the bottom end of the protective boxes, on the outlet pipe, and on the inlet pipe. A screw is installed on one side of the protective box, and a guide rod is installed on the other side. One end of the screw is connected to a drive motor. A lifting plate is sleeved on both the screw and the guide rod. A linkage frame is fixed at the bottom end of the lifting plate, and the bottom of the linkage frame matches the specifications of the through cavity. A heating rod is installed in the middle of the bottom end of the lifting plate.

[0005] Furthermore, both the inlet pipe and the outlet pipe are welded to the two side walls of the closed cooling tower, and a connecting flange is reserved at one end of both the inlet pipe and the outlet pipe.

[0006] Furthermore, the protective box is fixed to the inlet pipe and the outlet pipe, and the through cavity is formed in the inlet pipe, the outlet pipe and the protective box. An inspection cover is installed on one side wall of the protective box by screws.

[0007] Furthermore, the screw is rotatably installed inside the protective box, the guide rod is welded inside the protective box, the drive motor is fixed to one side of the top of the protective box by bolts, and the output shaft of the drive motor is fixedly connected to one end of the screw.

[0008] Furthermore, the lifting plate is threadedly connected to the screw, the lifting plate is slidably connected to the guide rod, the linkage frame is fixed to the bottom end of the lifting plate by screws, and the linkage frame is slidably connected to the through cavity.

[0009] Furthermore, the heating rod is fixed to the middle of the bottom end of the lifting plate by screws, and the length of the heating rod is less than the length of the linkage frame.

[0010] Furthermore, a temperature probe is fixed on one side wall of the protective box, and a controller is installed below the temperature probe. The controller is electrically connected to the temperature probe, the heating rod, and the drive motor.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model has the following advantages: This invention utilizes a lifting mechanism consisting of a drive motor, a screw, a lifting plate, a guide rod, and a linkage frame. When the heating rod is not in use, it is housed within a protective enclosure, and the linkage frame seals the cavity. This prevents scale buildup on its surface from constantly being inside the inlet and outlet pipes, ensuring heating efficiency. It also facilitates maintenance and maintains its heating performance when in use. When needed, the drive motor rotates the screw, causing the lifting plate, along with the screw thread and guide rod, to move the heating rod into the inlet and outlet pipes to heat the cooling water. This allows for rapid deployment, ensures antifreeze protection, and provides high performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an automatic antifreeze device for a closed cooling tower according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective box in the automatic antifreeze device for a closed cooling tower described in this utility model; Figure 3 This is a schematic diagram of the structure of the automatic antifreeze device for a closed cooling tower described in this utility model when the heating rod is located inside the water inlet pipe.

[0013] The annotations in the attached figures are explained as follows: 1. Closed-circuit cooling tower; 2. Inlet pipe; 3. Outlet pipe; 4. Protective box; 5. Drive motor; 6. Inspection cover; 7. Temperature probe; 8. Controller; 9. Screw; 10. Guide rod; 11. Lifting plate; 12. Heating rod; 13. Linkage frame; 14. Through cavity. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] like Figures 1-3 As shown in this embodiment, an automatic antifreeze device for a closed-loop cooling tower includes a closed-loop cooling tower 1. A water inlet pipe 2 is pre-installed at the upper end of one side wall of the closed-loop cooling tower 1, and a water outlet pipe 3 is pre-installed at the bottom end of one side wall of the closed-loop cooling tower 1. Protective boxes 4 are installed on both the water outlet pipe 3 and the water inlet pipe 2 to protect the heating rod 12. Through cavities 14 are opened at the bottom end of the protective box 4 and on the water outlet pipe 3 and the water inlet pipe 2. A screw 9 is installed on one side of the protective box 4, and a guide rod 10 is installed on the other side of the protective box 4. The movement of the lifting plate 11 can be limited and guided. One end of the screw 9 is connected to the drive motor 5, which can drive the screw 9 to rotate. The lifting plate 11 is sleeved on both the screw 9 and the guide rod 10, which can drive the heating rod 12 to rise and fall. The bottom end of the lifting plate 11 is fixed with the linkage frame 13, which can seal the cavity 14. The bottom of the linkage frame 13 matches the specifications of the cavity 14. The heating rod 12 is installed in the middle of the bottom end of the lifting plate 11, which can heat the cooling water, thereby achieving antifreeze protection for the closed cooling tower 1.

[0016] like Figures 1-3 In this embodiment, the inlet pipe 2 and the outlet pipe 3 are both welded to the two side walls of the closed cooling tower 1. A connecting flange is reserved at one end of the inlet pipe 2 and the outlet pipe 3. The protective box 4 is fixed on the inlet pipe 2 and the outlet pipe 3. The through cavity 14 is formed in the inlet pipe 2, the outlet pipe 3 and the protective box 4. A maintenance cover 6 is installed on one side wall of the protective box 4 by screws. Cooling water enters the closed cooling tower 1 through the inlet pipe 2 and is discharged through the outlet pipe 3. The maintenance cover 6 facilitates the maintenance of the heating rod 12 in the protective box 4.

[0017] like Figures 1-3In this embodiment, the screw 9 is rotatably installed inside the protective box 4, the guide rod 10 is welded inside the protective box 4, the drive motor 5 is fixed to one side of the top of the protective box 4 by bolts, the output shaft of the drive motor 5 is fixedly connected to one end of the screw 9, the lifting plate 11 is threadedly connected to the screw 9, the lifting plate 11 is slidably connected to the guide rod 10, the linkage frame 13 is fixed to the bottom end of the lifting plate 11 by screws, the linkage frame 13 is slidably connected to the through cavity 14, the heating rod 12 is fixed to the middle of the bottom end of the lifting plate 11 by screws, the length of the heating rod 12 is less than the length of the linkage frame 13, a temperature probe 7 is fixed on one side wall of the protective box 4, a controller 8 is set below the temperature probe 7, the controller 8 is electrically connected to the temperature probe 7, the heating rod 12 and the drive motor 5, and during use, the temperature... The probe 7 monitors the external temperature in real time. When the heating rod 12 is not in use, it can be placed inside the protective box 4, while the linkage frame 13 seals the passage cavity 14. This prevents scale buildup on its surface from constantly being inside the inlet pipe 2 and outlet pipe 3, ensuring its heating efficiency. It also facilitates maintenance and ensures its heating performance when in use. When the temperature probe 7 detects a value lower than the set value, the controller 8 controls the drive motor 5 to work. The drive motor 5 drives the screw 9 to rotate, which in turn causes the lifting plate 11 to move the heating rod 12 under the action of the thread and the guide rod 10, placing it inside the inlet pipe 2 and outlet pipe 3 to heat the cooling water. This allows it to be put into use quickly, ensuring its antifreeze effect and providing high performance.

[0018] The specific implementation process of this embodiment is as follows: First, the device is placed in place. During use, the servo motor 9 drives the screw 98 to rotate, which in turn causes the lifting block 4 to move back and forth under the action of the thread and the guide rod 107, thereby increasing its heat dissipation area. During the movement, the screen mesh 3 on both sides of the lifting block 4 is also unfolded and rolled up under the action of the winding shaft 13 and the torsion spring 14. This can increase the ventilation area while preventing dust inside the cabinet 1. The combination of the two sets can effectively improve the heat dissipation effect and heat dissipation efficiency of the device, and has high performance.

[0019] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic antifreeze device for a closed-loop cooling tower, characterized in that: The system includes a closed cooling tower (1), with an inlet pipe (2) reserved at the upper end of one side wall and an outlet pipe (3) reserved at the bottom end of one side wall. A protective box (4) is provided on both the outlet pipe (3) and the inlet pipe (2). A through cavity (14) is opened at the bottom end of the protective box (4) and on both the outlet pipe (3) and the inlet pipe (2). A screw (9) is installed on one side of the protective box (4), and a guide rod (10) is installed on the other side of the protective box (4). A drive motor (5) is connected to one end of the screw (9). A lifting plate (11) is fitted on both the screw (9) and the guide rod (10). A linkage frame (13) is fixed at the bottom end of the lifting plate (11). The bottom of the linkage frame (13) matches the specifications of the through cavity (14). A heating rod (12) is installed in the middle of the bottom end of the lifting plate (11).

2. The automatic antifreeze device for a closed-loop cooling tower according to claim 1, characterized in that: The inlet pipe (2) and the outlet pipe (3) are both welded to the two side walls of the closed cooling tower (1), and a connecting flange is reserved at one end of the inlet pipe (2) and the outlet pipe (3).

3. The automatic antifreeze device for a closed-loop cooling tower according to claim 1, characterized in that: The protective box (4) is fixed on the water inlet pipe (2) and the water outlet pipe (3). The through cavity (14) is formed on the water inlet pipe (2), the water outlet pipe (3) and the protective box (4). A maintenance cover (6) is installed on one side wall of the protective box (4) by screws.

4. The automatic antifreeze device for a closed-loop cooling tower according to claim 1, characterized in that: The screw (9) is rotatably installed inside the protective box (4), the guide rod (10) is welded inside the protective box (4), the drive motor (5) is fixed to one side of the top of the protective box (4) by bolts, and the output shaft of the drive motor (5) is fixedly connected to one end of the screw (9).

5. An automatic antifreeze device for a closed-loop cooling tower according to claim 4, characterized in that: The lifting plate (11) is connected to the screw (9) by a thread, the lifting plate (11) is slidably connected to the guide rod (10), the linkage frame (13) is fixed to the bottom end of the lifting plate (11) by screws, and the linkage frame (13) is slidably connected to the through cavity (14).

6. An automatic antifreeze device for a closed-loop cooling tower according to claim 5, characterized in that: The heating rod (12) is fixed to the middle of the bottom end of the lifting plate (11) by screws, and the length of the heating rod (12) is less than the length of the linkage frame (13).

7. An automatic antifreeze device for a closed-loop cooling tower according to claim 6, characterized in that: A temperature probe (7) is fixed on one side wall of the protective box (4), and a controller (8) is provided below the temperature probe (7). The controller (8) is electrically connected to the temperature probe (7), the heating rod (12), and the drive motor (5).

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