A dry-wet type unit water-saving and mist-eliminating cooling tower

Abstract

The utility model relates to cooling tower technical field, specifically disclose a dry -wet unit water -saving defogging type cooling tower, including cooling tower main part, water distribution main pipe, water collecting main pipe and ventilation pipe, still include the protection subassembly of installing at the top of ventilation pipe, the protection subassembly includes fixed block, rotates and connects first baffle and second baffle on fixed block and is used for locking fixed frame and limit block, there is a clamping groove in the limit block, there is hollow block in the fixed frame, and hollow block has the sliding connection of sliding column in, sliding column connects trapezoidal block, and spring is set up on sliding column, and spring is located between trapezoidal block and hollow block. The utility model has solved the problem that sundries are easy to enter ventilation pipe when shutdown, and circulating water impurity is easy to block pipeline, realized the protection and automatic cleaning on demand, and stable and reliable operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a dry-wet type unit water-saving and mist-eliminating cooling tower. Background Technology

[0002] Dry-wet unit-type water-saving and anti-fogging cooling towers are widely used in industrial refrigeration and air conditioning systems as highly efficient heat exchange equipment. These cooling towers achieve water conservation and anti-fogging environmental goals through the coordinated operation of dry and wet cooling units. To ensure heat exchange efficiency, large-diameter ventilation ducts must be installed on the main body of the cooling tower to guide outside air into the tower to exchange heat with circulating water or heat exchange coils.

[0003] However, in existing technologies, these ventilation ducts are typically designed to be normally open or equipped with only simple protective grilles. While this design meets the ventilation requirements during normal operation of the cooling tower, the fully exposed ventilation ducts pose significant operational risks when the cooling tower is shut down, under maintenance, or encounters severe weather such as sandstorms, rain, or snow.

[0004] External debris, such as dust, leaves, garbage, and even rain and snow, can enter the cooling tower unimpeded through the normally open ventilation ducts. This debris not only contaminates the circulating water in the main water collection pipe but can also accumulate on the dry-cooled heat exchangers or wet-cooled packing inside the tower. Over time, this can lead to reduced heat exchange efficiency, clogged spray systems, or corrosion of internal components. This lack of effective protection significantly increases the difficulty of later maintenance and operating costs of the cooling tower. This is especially true for dry-wet cooling towers with relatively delicate internal structures, where cleaning and replacing internal components is more difficult, seriously affecting the safety of equipment operation and its overall service life. Therefore, how to provide reliable and airtight closed protection for the cooling tower's ventilation ducts when not in operation, while ensuring normal ventilation, is a technical problem that urgently needs to be solved in this field.

[0005] Therefore, this utility model proposes a dry-wet type unit water-saving and mist-eliminating cooling tower to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a dry and wet unit water-saving and defogging cooling tower, which aims to improve the existing technology where the ventilation pipes are usually in an open state and lack an effective closing protection mechanism. This causes external debris, wind and sand or rain and snow to easily enter the tower through the ventilation pipes during shutdown or in severe weather, thereby polluting the circulating water quality, clogging the internal heat exchange components, and resulting in low equipment reliability and difficult maintenance and cleaning.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a dry and wet unit water-saving and defogging cooling tower, comprising a cooling tower body; a water distribution main pipe connected to the cooling tower body; a water collection main pipe connected to the cooling tower body; and a ventilation pipe connected to the cooling tower body; and further comprising a protective component installed on the top of the ventilation pipe;

[0008] The protective component features a structure capable of opening and closing the ventilation duct opening and automatically locking. Specifically, the protective component includes a fixing block mounted on the top of the ventilation duct; a first baffle and a second baffle, which are rotatably connected to the fixing block.

[0009] Furthermore, the first baffle, the second baffle, and the ventilation duct are combined by means of a fixing frame, a limiting block, and an elastic locking mechanism. The protective assembly also includes a fixing frame and a limiting block. The limiting block is disposed at the free end of the first baffle or the second baffle. The fixing frame is disposed at the top of the ventilation duct and cooperates with the limiting block. A slot is provided inside the limiting block. A hollow block is fixedly connected inside the fixing frame. A sliding column is slidably connected inside the hollow block. A trapezoidal block is fixedly connected to one end of the sliding column. The trapezoidal block is adapted to engage with the slot. A spring is sleeved on the sliding column. The spring is located between the trapezoidal block and the hollow block.

[0010] Preferably, the spring is used to apply an elastic biasing force to the trapezoidal block, causing the trapezoidal block to tend to engage with the slot, thereby ensuring the stability of the locked state;

[0011] Preferably, it also includes a filter assembly disposed inside the main water distribution pipe. The filter assembly is disposed inside the main water distribution pipe for pretreatment of circulating water. The filter assembly includes a mounting bracket, a waterproof motor, a filter screen, and a scraper. The mounting bracket is fixed inside the main water distribution pipe. The waterproof motor is mounted on the mounting bracket. The filter screen is disposed on the water flow channel inside the main water distribution pipe. The scraper is connected to the output shaft of the waterproof motor.

[0012] Preferably, the scraper is attached to the surface of the filter screen to ensure a cleaning effect when scraping off impurities;

[0013] Preferably, the ventilation duct is located at the top of the cooling tower body to facilitate the natural upward discharge of hot air;

[0014] Preferably, the main water distribution pipe is connected to the upper part of the cooling tower body to facilitate uniform spraying of circulating water;

[0015] Preferably, the main water collection pipe is connected to the bottom of the cooling tower body to collect the cooled circulating water.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem that existing cooling towers, when the ventilation openings are open in the shutdown state, are prone to damage to internal components due to the entry of external debris, sand, or rain and snow into the tower. It achieves the ability to flexibly switch between ventilation and protection states as needed. Furthermore, the spring's elastic restoring force drives the trapezoidal block into the slot to achieve automatic and secure closure and locking, effectively isolating external impurities and ensuring the safety and cleanliness of the internal structure of the cooling tower.

[0018] 2. This utility model integrates a filter assembly inside the main water distribution pipe, uses a mounting bracket to fix a waterproof motor, and drives a scraper attached to the surface of the filter screen to perform automatic reciprocating scraping operations. This solves the problem in the prior art where circulating cooling water often carries impurities such as mud, sand, and rust, which can easily cause blockages in the nozzles and heat exchange pipes of dry and wet cooling units, thereby reducing cooling efficiency and shortening equipment life. It achieves real-time online pretreatment of the circulating water entering the cooling tower, automatically removes deposits on the surface of the filter screen, ensures smooth water flow, maintains the high-efficiency heat exchange performance of the cooling tower, and reduces manual maintenance costs.

[0019] 3. This utility model solves the problems of poor operational stability and weak environmental adaptability caused by the lack of air inlet protection and water pretreatment methods in traditional cooling towers by synergistically applying the above-mentioned protective components and filter components to the main structure of the dry and wet unit water-saving and defogging type cooling tower. It achieves the effect of comprehensively improving the anti-interference ability of the equipment and extending the service life of the overall system while realizing the core functions of water saving and defogging. Attached Figure Description

[0020] Figure 1 This is a perspective view of a dry-wet type unit water-saving and mist-eliminating cooling tower proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the main water distribution pipe for a dry-wet type unit water-saving and mist-eliminating cooling tower proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the ventilation pipe of a dry-wet type unit water-saving and defogging cooling tower proposed in this utility model;

[0023] Figure 4This is a schematic diagram of the limiting block of a dry-wet type unit water-saving and defogging cooling tower proposed in this utility model.

[0024] Legend:

[0025] 1. Cooling tower body; 2. Main water collection pipe; 3. Main water distribution pipe; 4. Ventilation pipe; 5. Filter assembly; 501. Mounting bracket; 502. Waterproof motor; 503. Filter screen; 504. Scraper; 6. Protective assembly; 601. Fixing block; 602. First baffle; 603. Second baffle; 604. Restriction block; 605. Fixing frame; 606. Slot; 607. Trapezoidal block; 608. Hollow block; 609. Sliding column; 610. Spring. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-4 This utility model provides an embodiment of a dry-wet type unit water-saving and anti-fogging cooling tower, including a cooling tower body 1, a water distribution main pipe 3 connected to the upper part of the cooling tower body 1, a water collection main pipe 2 connected to the bottom of the cooling tower body 1, and a ventilation pipe 4 disposed on the top of the cooling tower body 1. It also includes a protective component 6 installed on the top of the ventilation pipe 4. The protective component 6 includes a fixing block 601 installed on the top of the ventilation pipe 4, a first baffle 602 and a second baffle 603 respectively rotatably connected to the fixing block 601, and the protective component 6 also includes a fixing frame 605 and a limiting block 604. The limiting block 604 is disposed at the free end of the first baffle 602 or the second baffle 603, and the fixing frame 605 is disposed on... At the top of the ventilation duct 4 and in cooperation with the limiting block 604, the limiting block 604 has a slot 606 inside. A hollow block 608 is fixedly connected inside the fixing frame 605. A sliding column 609 is slidably connected inside the hollow block 608. A trapezoidal block 607 is fixedly connected to one end of the sliding column 609. The trapezoidal block 607 is suitable for engaging with the slot 606. A spring 610 is sleeved on the sliding column 609. The spring 610 is located between the trapezoidal block 607 and the hollow block 608. The spring 610 is used to apply an elastic bias force to the trapezoidal block 607, so that the trapezoidal block 607 tends to engage with the slot 606. The dry and wet unit water-saving and defogging type cooling tower also includes a filter assembly 5 installed inside the water distribution main pipe 3.

[0028] The filter assembly 5 includes a mounting bracket 501, a waterproof motor 502, a filter screen 503, and a scraper 504. The mounting bracket 501 is fixed inside the water distribution main pipe 3. The waterproof motor 502 is mounted on the mounting bracket 501. The filter screen 503 is set on the water flow channel inside the water distribution main pipe 3. The scraper 504 is connected to the output shaft of the waterproof motor 502 and is attached to the surface of the filter screen 503.

[0029] The protective component 6 includes a fixing block 601, which is installed on the top of the ventilation duct 4. A first baffle 602 and a second baffle 603 are rotatably connected to the fixing block 601. The protective component 6 also includes a fixing frame 605 for locking the first baffle 602 and the second baffle 603, and a limiting block 604. The limiting block 604 is located at the free end of either the first baffle 602 or the second baffle 603. The fixing frame 605 is located on the top of the ventilation duct 4 and cooperates with the limiting block 604. To achieve automatic locking, a slot 606 is provided inside the limiting block 604. A hollow block 608 is fixedly connected inside the fixing frame 605. A sliding column 609 is slidably connected inside the hollow block 608. A trapezoidal block 607 is fixedly connected to one end of the sliding column 609. The shape and position of the trapezoidal block 607 are suitable for engaging with the slot 606 inside the limiting block 604. To provide a restoring force, a spring 610 is sleeved on the sliding post 609. The spring 610 is located between the trapezoidal block 607 and the hollow block 608. In the assembled state, the spring 610 is used to apply an elastic biasing force to the trapezoidal block 607, causing the trapezoidal block 607 to tend to engage with the slot 606. This locking structure formed by the cooperation of the spring 610, the trapezoidal block 607, the sliding post 609 and the slot 606 ensures that when the first baffle 602 and the second baffle 603 are closed, the limiting block 604 cooperates with the fixing frame 605, and the trapezoidal block 607 can automatically engage with the slot 606 under the push of the spring 610, thereby achieving reliable sealing and protection of the ventilation pipe 4.

[0030] In a preferred embodiment, to achieve reliable automatic locking of the protective component 6, the spring 610 is used to apply an elastic biasing force to the trapezoidal block 607, causing the trapezoidal block 607 to tend to engage with the slot 606.

[0031] As another preferred embodiment, in order to pre-treat the circulating water to prevent subsequent pipeline blockage, the dry and wet unit water-saving and defogging cooling tower also includes a filter assembly 5 installed inside the water distribution main pipe 3. The filter assembly 5 includes a mounting bracket 501 fixed inside the water distribution main pipe 3, a waterproof motor 502 installed on the mounting bracket 501, a filter screen 503 installed on the water flow channel inside the water distribution main pipe 3, and a scraper 504 connected to the output shaft of the waterproof motor 502.

[0032] Furthermore, to ensure efficient cleaning of the filter screen 503, the scraper 504 is attached to the surface of the filter screen 503;

[0033] As a preferred configuration for the overall layout of the cooling tower body 1, the ventilation pipe 4 is located at the top of the cooling tower body 1, the water distribution main pipe 3 is connected to the upper part of the cooling tower body 1, and the water collection main pipe 2 is connected to the bottom of the cooling tower body 1.

[0034] Working principle: When the cooling tower is running, the circulating hot water is transported to the cooling tower body 1 through the water distribution main pipe 3. After being cooled by the dry cooling and wet cooling components inside the cooling tower body 1, it is recycled by the water collection main pipe 2. At the same time, outside air enters the cooling tower body 1 through the ventilation pipe 4 to participate in heat exchange.

[0035] During water pretreatment, when circulating hot water flows through the main water distribution pipe 3, it first passes through the filter screen 503 to intercept impurities such as mud, sand, and rust. When impurities accumulate on the surface of the filter screen 503 and cause blockage, the waterproof motor 502 installed on the mounting bracket 501 starts. The output shaft of the waterproof motor 502 drives the scraper 504 attached to the surface of the filter screen 503 to scrape back and forth on the surface of the filter screen 503, cleaning away the attached impurities, ensuring smooth water flow in the main water distribution pipe 3, and preventing impurities from entering the nozzles and heat exchange pipes of subsequent dry and wet cooling components.

[0036] When switching between protection and ventilation of ventilation duct 4, when ventilation is required for cooling tower operation, the sliding column 609 sliding inside the hollow block 608 is pulled. The hollow block 608 is fixed inside the fixed frame 605. The sliding column 609 moves and drives the trapezoidal block 607 fixed at one end of the sliding column 609 to compress the spring 610 sleeved on the sliding column 609. The spring 610 is located between the trapezoidal block 607 and the hollow block 608. This action releases the trapezoidal block 607 from the slot 606 opened inside the limiting block 604. Then the first baffle 602 and the second baffle 603 rotatably connected to the fixed block 601 can be opened, and outside air enters the tower through ventilation duct 4.

[0037] When the cooling tower is shut down or requires protection, the first baffle 602 and the second baffle 603 are closed. When closed, the limiting block 604 located at the free end of the first baffle 602 or the second baffle 603 is embedded in the fixing bracket 605 located at the top of the ventilation pipe 4. At this time, the limiting block 604 will apply pressure to the trapezoidal block 607, causing it to move the sliding column 609 and compress the spring 610. When the limiting block 604 is installed in place, the spring 610 releases its elastic potential energy to push the trapezoidal block 607 and the sliding column 609 to reset. At this time, the trapezoidal block 607 resets and locks into the slot 606, so that the first baffle 602 and the second baffle 603 are closed and locked, preventing impurities from entering the tower through the ventilation pipe 4, thus realizing the on-demand switching between ventilation and protection.

Claims

1. A dry / wet type unit water-saving and mist-eliminating cooling tower, comprising: Cooling tower body (1); The main water distribution pipe (3) is connected to the main body of the cooling tower (1). The main water collection pipe (2) is connected to the main body of the cooling tower (1); Ventilation pipe (4) is connected to the main body of the cooling tower (1); Its characteristic is that it further includes: A protective component (6) is mounted on top of the ventilation duct (4); The protective component (6) includes a fixing block (601) which is mounted on top of the ventilation pipe (4); The first baffle (602) and the second baffle (603) are rotatably connected to the fixed block (601). The protective component (6) also includes a fixing frame (605) and a limiting block (604); The limiting block (604) is disposed at the free end of the first baffle (602) or the second baffle (603); The fixing bracket (605) is disposed on the top of the ventilation pipe (4) and cooperates with the limiting block (604); The limiting block (604) has a slot (606) inside; A hollow block (608) is fixedly connected inside the fixing frame (605); The hollow block (608) is slidably connected to a sliding column (609). A trapezoidal block (607) is fixedly connected to one end of the sliding column (609). The trapezoidal block (607) is adapted to engage with the slot (606); A spring (610) is fitted on the sliding column (609). The spring (610) is located between the trapezoidal block (607) and the hollow block (608).

2. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 1, characterized in that: The spring (610) is used to apply an elastic biasing force to the trapezoidal block (607), causing the trapezoidal block (607) to tend to engage with the slot (606).

3. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 1, characterized in that: It also includes a filter assembly (5) disposed inside the main water distribution pipe (3). The filter assembly (5) includes a mounting bracket (501), a waterproof motor (502), a filter screen (503), and a scraper (504). The mounting bracket (501) is fixed inside the main water distribution pipe (3). The waterproof motor (502) is mounted on the mounting bracket (501). The filter screen (503) is disposed on the water flow channel inside the main water distribution pipe (3). The scraper (504) is connected to the output shaft of the waterproof motor (502).

4. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 3, characterized in that: The scraper (504) is attached to the surface of the filter screen (503).

5. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 1, characterized in that: The ventilation pipe (4) is located on the top of the cooling tower body (1).

6. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 3, characterized in that: The main water distribution pipe (3) is connected to the upper part of the cooling tower body (1).

7. The dry / wet type unit water-saving and mist-eliminating cooling tower according to claim 3, characterized in that: The main water collection pipe (2) is connected to the bottom of the cooling tower body (1).

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