Closed cooling tower with descaling function

Abstract

The utility model provides a closed cooling tower with a descaling function, which comprises a support main body, a water collecting cover and a lifting driving part are arranged on the support main body, a water outlet is arranged at the bottom of the water collecting cover, a baffle is arranged at the water outlet, and the lifting driving part can drive the baffle to ascend or descend. The baffle can block the water outlet; a tubular heat exchanger is mounted in the water collecting cover; compared with the prior art, when descaling operation needs to be carried out, the baffle is driven by the lifting driving part to ascend till the water outlet is blocked, the reversing valve is switched to enable the water storage tank to be communicated with the spraying row, and chemicals in the water storage pool are sprayed to the tubular heat exchanger through the supply pump till the tubular heat exchanger is completely soaked; after soaking for a certain time, the baffle is lowered again to enable the liquid medicine in the water collecting cover to fall into the water accumulation pool, the reversing valve is switched to enable the water accumulation pool to be communicated with the water storage tank, and the supply pump pumps the liquid medicine into the water storage tank again.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a closed cooling tower with a descaling function. Background Art

[0002] A closed cooling tower is a tube heat exchanger placed in a cooling tower. The tube heat exchanger is cooled by circulating air and spraying coolant. In recent years, closed cooling towers have been widely used in industries such as steel metallurgy, power electronics, mechanical processing, and air conditioning systems. Currently, most closed cooling towers used for industrial hot water cooling use cooling coils for heat exchange cooling.

[0003] Since the coolant used for spraying is mostly ordinary water, which contains more calcium, magnesium and other ions, after a long period of work, it will be deposited and form scale on the tubular heat exchanger. The scale will affect the heat dissipation efficiency of the tubular heat exchanger. The existing cooling tower descaling method is time-consuming and has low descaling efficiency. Therefore, a closed cooling tower that can improve the descaling efficiency is now needed. Utility Model Content

[0004] The utility model aims to provide a closed cooling tower with a descaling function, aiming to solve the problem of low descaling efficiency of the existing closed cooling tower.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a closed cooling tower with a descaling function, including a bracket body, a water collecting cover and a lifting drive member are arranged on the bracket body, a water outlet is arranged at the bottom of the water collecting cover, a baffle is arranged at the water outlet, the lifting drive member can drive the baffle to rise or fall, and when the baffle is raised to the highest point, the baffle can block the water outlet; a tubular heat exchanger is installed in the water collecting cover; a water circulation component is arranged on the bracket body, and the water circulation component includes a spray row, an exchange The bracket body is provided with a directional valve, a supply pump and a water pool. The water pool is installed at the bottom of the bracket body, the spray row is installed above the water collecting cover, the supply pump is connected with the reversing valve, and the reversing valve is respectively connected with the spray row and the water pool through connecting pipes; the supply pump pumps the water flow in the water pool to the spray row through the reversing valve, the spray row sprays out the water flow, and the water flow falls into the water pool after passing through the tubular heat exchanger; the reversing valve is connected with a water storage tank, and a water inlet is arranged on the top of the water storage tank; the water storage tank is used to store cooling water or descaling agent.

[0006] Furthermore, a water collecting funnel is arranged below the baffle, and a filter screen is arranged at the water collecting funnel.

[0007] Furthermore, a water collector is arranged above the water collecting cover, a plurality of water collecting plates are arranged in the water collector, and the water collecting plates are provided with a plurality of bends.

[0008] Furthermore, a cooling tower shell is provided on the outside of the bracket body, an air inlet is provided on the side of the cooling tower shell, and an air outlet is provided on the top of the cooling tower.

[0009] Furthermore, an exhaust device and a fan guardrail are provided at the exhaust port.

[0010] Furthermore, a replacement window is provided on the outer shell of the cooling tower, and an opening and closing door panel is hinged at the replacement window.

[0011] Furthermore, a guide groove is provided on the outer side of the baffle.

[0012] Compared with the prior art, the utility model provides a closed cooling tower with a descaling function. When descaling is required, the baffle rises under the drive of the lifting drive member until the water outlet is blocked, the reversing valve is switched to connect the water storage tank with the spray row, and the descaling agent in the water storage tank is sprayed to the tubular heat exchanger through the supply pump until the tubular heat exchanger is completely immersed; after soaking for a certain period of time, the baffle descends under the drive of the lifting drive member to make the descaling agent in the water collecting cover fall into the water pool, the reversing valve is switched to connect the water pool with the water storage tank, and the supply pump pumps the descaling agent into the water storage tank again. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional view of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is an exploded view of the utility model;

[0016] Figure 4 It is a three-dimensional cross-sectional view of the water collecting cover in the utility model;

[0017] Figure 5 It is a three-dimensional cross-sectional view of the baffle in the utility model;

[0018] Figure 6 It is a top view of the baffle in the utility model;

[0019] Figure 7 It is a three-dimensional cross-sectional view of the water collector in the utility model;

[0020] Figure 8 It is a three-dimensional view of the water circulation component of the utility model;

[0021] Fig. 9 It is a three-dimensional view of the mid-tube heat exchanger of the utility model;

[0022] Fig.10 It is a three-dimensional view of the water collecting funnel in the utility model;

[0023] Fig.11 It is a three-dimensional cross-sectional view of the outer shell of the cooling tower in the utility model.

[0024] Description of reference numerals:

[0025] Among them; 1. bracket body; 2. water collecting cover; 3. baffle; 4. lifting drive; 5. water collecting funnel; 6. water pool; 7. spray row; 8. tubular heat exchanger; 9. reversing valve; 10. supply pump; 11. exhaust port; 12. exhaust device; 13. fan guardrail; 14. water storage tank; 15. water inlet; 16. water outlet; 17. guide groove; 18. water collector; 19. water collecting plate; 20. filter; 21. cooling tower shell; 22. replacement window; 23. opening and closing door panel; 24. air inlet. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with specific embodiments.

[0027] In the present utility model, unless otherwise clearly specified and limited, when terms such as "set on", "connected", and "connected" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The directional words that appear in the present utility model are to better illustrate the characteristics of the features and the relationship between the features. It should be understood that when the placement direction of the present utility model changes, the characteristics of the features and the direction of the relationship between the features also change accordingly. Therefore, the directional words do not constitute an absolute limitation on the characteristics of the features and the relationship between the features in space, but only play a relative limitation role.

[0028] like Figures 1 to 11 As shown, the utility model provides a closed cooling tower with a descaling function, including a bracket body 1, a water collecting cover 2 and a lifting drive 4 are arranged on the bracket body 1, a water outlet 16 is arranged at the bottom of the water collecting cover 2, a baffle 3 is arranged at the water outlet 16, and the lifting drive 4 can drive the baffle 3 to rise or fall. When the baffle 3 is raised to the highest point, the baffle 3 can block the water outlet 16; a tubular heat exchanger 8 is installed in the water collecting cover 2;

[0029] In this embodiment, a water circulation component is arranged on the bracket body 1, and the water circulation component includes a spray row 7, a reversing valve 9, a supply pump 10 and a water pool 6. The water pool 6 is installed at the bottom of the bracket body 1, and the spray row 7 is installed above the water collecting cover 2. The supply pump 10 is connected to the reversing valve 9, and the reversing valve 9 is respectively connected to the spray row 7 and the water pool 6 through connecting pipes; the supply pump 10 pumps the water flow in the water pool 6 to the spray row 7 through the reversing valve 9, and the spray row 7 sprays water, and the water flow passes through the tubular heat exchanger 8 and then falls into the water pool 6.

[0030] Through the above design scheme, in normal operation, the baffle 3 is driven down by the lifting drive member 4, so that the water outlet 16 is in an open state, and the supply pump 10 drives the cooling water to be sprayed out from the spray row 7 to cool the tubular heat exchanger 8. The cooled water flows out along the water outlet 16 and falls into the water pool 6. The reversing valve 9 controls the water pool 6 to be connected with the spray row 7. The cooling water falling into the water pool 6 is pumped to the spray row 7 again under the action of the supply pump 10 to resume the cooling work.

[0031] In this embodiment, the reversing valve 9 is connected to a water storage tank 14 , and a water inlet 15 is provided at the top of the water storage tank 14 ; the water storage tank 14 is used to store cooling water or descaling agent.

[0032] Through the above design scheme, the reversing valve 9 can freely switch the communication mode between the water storage tank 14, the water pool 6 and the spray pipe, and a water outlet pipe is also provided on the reversing valve 9 to ensure that water or medicine can be discharged when necessary; in the present embodiment, there are two water storage tanks 14, one for accumulating descaling agents and the other for accumulating cooling water. When it is necessary to clean the scale, the reversing valve 9 connects the water pool 6 with the water storage tank 14 storing cooling water, and the supply pump 10 collects the cooling water in the water pool 6. Then the reversing valve 9 connects the water storage tank 14 containing the descaling agent with the spray row 7, and the supply pump 10 pumps the agent into the water collecting cover 2. At this time, the baffle 3 rises under the drive of the lifting drive 4, so that the water outlet 16 at the bottom of the water collecting cover 2 is blocked, and the descaling agent accumulates in the water collecting cover 2 and soaks the tubular heat exchanger 8. The immersion method can descale the tubular heat exchanger 8 without dead ends, thereby improving the descaling efficiency. After the descaling work is completed after soaking for a certain period of time, the baffle 3 is driven down by the lifting drive member 4, and the descaling agent without obstruction flows out from the water outlet 16 and falls into the water pool 6, and then the supply pump 10 pumps the descaling agent in the water pool 6 back to the water tank 14 for storing the agent.

[0033] In this embodiment, a water collecting funnel 5 is provided below the baffle 3, and a filter screen 20 is provided at the water collecting funnel 5. The water collecting funnel 5 can collect the cooling water or descaling agent flowing out of the water outlet 16, so that it can accurately fall into the water pool 6; the filter screen 20 can block the scale in the descaling agent, or filter the impurities in the cooling water.

[0034] In this embodiment, a water collector 18 is provided above the water collecting cover 2, and a plurality of water collecting plates 19 are provided in the water collector 18, and the water collecting plates 19 are provided with a plurality of bends. The bent water collecting plates 19 can condense the evaporated water vapor into water droplets as much as possible, and the water droplets can drip into the tubular heat exchanger 8 below when a certain amount of water is accumulated, thereby reducing the flow of evaporated water, thereby achieving the purpose of saving water.

[0035] In this embodiment, a cooling tower shell 21 is provided outside the bracket body 1, an air inlet 24 is provided on the side of the cooling tower shell 21, and an air outlet 11 is provided on the top of the cooling tower.

[0036] In this embodiment, an exhaust device 12 and a fan guardrail 13 are provided at the air outlet 11 .

[0037] Through the above design scheme, the cooling tower shell 21 can ensure that water flow will not splash around. After the exhaust device 12 is started, the external air flow flows in from the air inlet 24, passes through the tubular heat exchanger 8, and is blown out through the exhaust port 11 to complete the air cooling and heat dissipation work.

[0038] In this embodiment, a replacement window 22 is provided on the cooling tower shell 21, and an opening and closing door panel 23 is hinged at the replacement window 22. Workers can replace the filter screen 20 through the replacement window 22 to ensure that the amount of impurities in the cooling water or descaling agent can be reduced.

[0039] In this embodiment, a guide groove 17 is provided on the outer side of the baffle 3, and the guide groove 17 can perform a guide function to avoid splashing due to excessive flow when the baffle 3 hits.

[0040] Compared with the prior art, the closed cooling tower with descaling function provided by the utility model has the following characteristics: when descaling operation is required, the baffle 3 rises under the drive of the lifting drive 4 until the water outlet 16 is blocked, the reversing valve 9 is switched to connect the water storage tank 14 with the spray row 7, and the descaling agent in the water storage tank is sprayed to the tubular heat exchanger 8 through the supply pump 10 until the tubular heat exchanger 8 is completely immersed; after soaking for a certain period of time, the baffle 3 is driven down by the lifting drive 4 to make the descaling agent in the water collecting cover 2 fall into the water pool 6, the reversing valve 9 is switched to connect the water pool 6 with the water storage tank 14, and the supply pump 10 pumps the descaling agent into the water storage tank 14 again.

[0041] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A closed cooling tower with descaling function, comprising a support body (1), characterized in that: A water collecting cover (2) and a lifting drive member (4) are provided on the support body (1); a water outlet (16) is provided at the bottom of the water collecting cover (2); a baffle (3) is provided at the water outlet (16); the lifting drive member (4) can drive the baffle (3) to rise or fall; when the baffle (3) rises to the highest point, the baffle (3) can block the water outlet (16); a tubular heat exchanger (8) is installed in the water collecting cover (2); A water circulation assembly is arranged on the support body (1), and the water circulation assembly comprises a spray row (7), a reversing valve (9), a supply pump (10) and a water pool (6). The water pool (6) is installed at the bottom of the support body (1), the spray row (7) is installed above the water collecting cover (2), the supply pump (10) is connected to the reversing valve (9), and the reversing valve (9) is respectively connected to the spray row (7) and the water pool (6) through a connecting pipe; the supply pump (10) pumps the water flow in the water pool (6) to the spray row (7) through the reversing valve (9), and the spray row (7) sprays water flow, and the water flow passes through the tubular heat exchanger (8) and then falls into the water pool (6); The reversing valve (9) is connected to a water storage tank (14), and a water inlet (15) is arranged at the top of the water storage tank (14); the water storage tank (14) is used to store cooling water or descaling agent.

2. A closed cooling tower with descaling function according to claim 1, characterized in that: A water collecting funnel (5) is arranged below the baffle (3), and a filter screen (20) is arranged at the water collecting funnel (5).

3. A closed cooling tower with descaling function according to claim 1, characterized in that: A water collector (18) is arranged above the water collecting cover (2), and a plurality of water collecting plates (19) are arranged in the water collector (18), and the water collecting plates (19) are provided with a plurality of bends.

4. A closed cooling tower with descaling function according to claim 1, characterized in that: A cooling tower shell (21) is provided on the outside of the bracket body (1), an air inlet (24) is provided on the side of the cooling tower shell (21), and an air outlet (11) is provided on the top of the cooling tower.

5. A closed cooling tower with descaling function according to claim 4, characterized in that: An exhaust device (12) and a fan guardrail (13) are arranged at the exhaust port (11).

6. A closed cooling tower with descaling function according to claim 1, characterized in that: A replacement window (22) is provided on the cooling tower shell (21), and an opening and closing door panel (23) is hingedly connected to the replacement window (22).

7. A closed cooling tower with descaling function according to claim 1, characterized in that: A guide groove (17) is arranged on the outside of the baffle (3).

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