Counter-flow closed cooling tower

Abstract

The utility model relates to the field of cooling towers, in particular to a counter-flow closed cooling tower which comprises a tower body, the top end of the tower body is provided with an opening, and a fan is arranged at the opening; a water collector, a spraying mechanism, a heat exchange coil and a water collecting tank are sequentially arranged in the cavity of the tower body from top to bottom; the spraying mechanism is connected with the water collecting tank through a circulating mechanism; an air inlet is formed in the bottom of the side wall of the tower body; at the air inlet, the side wall of the tower body extends outwards to form a fixing frame, and a ventilation grille is detachably arranged in the fixing frame. And the problem of water quality pollution of spraying water is effectively solved. And the ventilation grille is detachable.

Description

Technical Field

[0001] The utility model relates to the field of cooling towers, in particular to a counter-flow closed cooling tower. Background Art

[0002] The counter-current closed cooling tower is mainly used to reduce the temperature of the fluid and achieve efficient heat exchange through a closed-circuit circulation system. When it is working, external dust, impurities, etc. can easily enter the tower with the air through the air inlet, polluting the water quality in the spray system in the tower, and seriously blocking the spray port. The existing ones generally set ventilation grilles at the air inlet. Due to the high humidity in the use scene, a layer of dust will adhere to the ventilation grilles after long-term use, which will not only affect the air intake but also the water quality of the spray system.

[0003] Chinese patent application number CN 202321655324.X discloses a square countercurrent closed cooling tower that solves the above problem. When the ventilation grille needs to be cleaned, the telescopic rod assembly is stretched and rotated to drive the positioning rod to leave the positioning groove, release the limit of the ventilation grille, and then the ventilation grille can be removed for cleaning, which improves the convenience of disassembly and assembly. However, even if the ventilation grille is replaced frequently, impurities will still enter the spray water, which may block the spray port.

[0004] At present, no technical solution that can solve the above technical problems has been found in the existing public technologies. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a counter-flow closed cooling tower in view of the above shortcomings. Compared with the prior art, the ventilation grille can be disassembled and impurities in the spray water can be removed by a filtering mechanism.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A counter-current closed cooling tower comprises a tower body, wherein the top end of the tower body is provided with an opening, and a fan is provided at the opening; a water collector, a spray mechanism, a heat exchange coil and a water collecting tank are provided in sequence from top to bottom inside the cavity of the tower body; the spray mechanism and the water collecting tank are connected by a circulation mechanism; an air inlet is provided at the bottom of the side wall of the tower body; at the air inlet, the side wall of the tower body extends outward to form a fixed frame, and a ventilation grille is removably provided in the fixed frame; the top surface and the bottom surface of the ventilation grille are respectively concave to form a A slide groove, a slider is slidably arranged at the opening of the slide groove, and the slider is connected to the bottom of the slide groove by a pull wire; a limit ring is fixedly arranged in the slide groove, and a spring is arranged between the limit ring and the slider; a through hole is arranged on the ventilation grille, and the through hole passes through the outer side surface of the ventilation grille and the slide groove; a push rod is slidably arranged in the through hole, the outer end of the push rod extends out of the through hole, and the inner end of the push rod cooperates with the pull wire; a fixing groove cooperating with the slider is arranged on the inner side of the fixed frame.

[0008] Furthermore, a pressing portion is provided after the outer end of the push rod extends out of the through hole; and a side of the slide groove opposite to the through hole is concave to form an extension groove.

[0009] Furthermore, a threading hole is provided at the inner end of the push rod, and the pull wire passes through the threading hole.

[0010] Furthermore, it also includes a filtering mechanism; the circulation mechanism includes a circulating water pipe connecting the spray mechanism and the water collecting tank, and a water pump is arranged on the circulating water pipe; the filtering mechanism is arranged at the water inlet end of the circulating water pipe, and the water inlet end is located in the water collecting tank; the filtering mechanism includes a filter screen and an outer shell; the filter screen is tubular, the top end of the filter screen is open, and the bottom end of the filter screen is inwardly retracted to be provided with a sewage outlet that passes through the bottom surface of the tower body, and a cover plate is removably arranged on the sewage outlet; the outer shell is tubular, and a connecting ring is respectively arranged at both ends of the outer shell, and the outer shell is sleeved on the outside of the filter screen through the connecting ring, and a water outlet is arranged on one side of the outer shell, and the water outlet is connected to the water inlet end of the circulating water pipe.

[0011] Furthermore, a plate-shaped filter is provided on the inner side of the ventilation grille, and the upper and lower sides of the ventilation grille extend inward to form an extension plate, and slots are provided on the opposite surfaces of the two extension plates, and plug blocks matching the slots are provided on the plate-shaped filter.

[0012] Furthermore, the inner bottom surface of the fixing frame is a slope that slopes inward from top to bottom.

[0013] The utility model adopts the above technical solution, and has the following advantages compared with the prior art:

[0014] The combination of fan, water collector, spray mechanism, heat exchange coil, water collecting tank, circulation mechanism and tower body forms a complete counter-flow closed cooling tower, which reduces the temperature of the fluid and realizes efficient heat exchange.

[0015] The slider is located between the slide groove and the fixed groove, and can fix the ventilation grille to the inside of the fixed frame; push the push rod so that the pull wire pulls the slider to move into the slide groove, thereby releasing the fixing effect of the slider, realizing the detachable ventilation grille and facilitating the cleaning of the ventilation grille.

[0016] The setting of the filtering mechanism allows the spray water to be filtered before entering the circulation mechanism, reducing the risk of impurities blocking the spray port. The setting of the plate filter further reduces the risk of impurities contaminating the spray water. The inclined surface of the fixed frame allows the water flowing down from the inner wall of the tower to drip directly onto the inclined surface of the fixed frame, and then flow back into the water collection tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of a counter-flow closed cooling tower in the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of A.

[0019] In the figure:

[0020] 1-tower body; 2-fan; 3-water collector; 4-spray mechanism; 5-heat exchange coil; 6-water collecting tank; 7-circulation mechanism; 8-air inlet; 9-fixed frame; 10-ventilation grille; 11-slide; 12-slider; 13-pull wire; 14-limiting ring; 15-spring; 17-push rod; 18-pressing part; 19-extension groove; 20-fixed groove; 21-circulating water pipe; 22-water pump; 23-filter screen; 24-housing; 25-drain outlet; 26-cover plate; 27-connecting ring; 28-plate filter screen; 29-extension plate; 30-slot; 31-plug block. DETAILED DESCRIPTION

[0021] like Figure 1-2As shown, a countercurrent closed cooling tower comprises a tower body 1, the top of the tower body 1 is open, and a fan 2 is arranged at the opening. The inside of the cavity of the tower body 1 is sequentially provided with a water collector 3, a spray mechanism 4, a heat exchange coil 5 and a water collecting tank 6 from top to bottom, and the spray mechanism 4 and the water collecting tank 6 are connected by a circulation mechanism 7. Preferably, the circulation mechanism 7 comprises a circulating water pipe 21 and a water pump 22, and the circulating water pipe 21 connects the spray mechanism 4 and the water collecting tank 6, and the circulating water pipe 21 is provided with a water pump 22. Preferably, fins are arranged on the outside of the heat exchange coil 5, and the design of the fins effectively increases the heat exchange area outside the tube and enhances the heat exchange effect. The liquid to be cooled is located in the heat exchange coil 5, and the circulation mechanism 7 is started. Under the action of the water pump 22, the spray water flows from the water collecting tank 6 through the circulating water pipe 21 and then sprays onto the heat exchange coil 5 through the spray mechanism 4, and finally the spray water falls into the water collecting tank 6 to form a cycle. There is a temperature difference between the spray water and the liquid that needs to be cooled, which generates heat exchange, thereby achieving the purpose of cooling. An air inlet 8 is provided at the bottom of the side wall of the tower body 1. At the air inlet 8, the side wall of the tower body 1 extends outward to form a fixed frame 9, and a ventilation grille 10 is removably provided in the fixed frame 9. When the fan 2 is turned on, the outside wind flows upward from the air inlet 8 through the ventilation grille 10, flows through the water collector 3, and flows out from the opening at the top of the tower body 1. The wind not only plays a cooling role, but also prolongs the contact time between the spray water and the heat exchange coil 5 because the flow direction of the wind and the spray water is opposite, thereby improving the heat exchange efficiency.

[0022] The top and bottom surfaces of the ventilation grille 10 are respectively concave to form a slide groove 11, and a slider 12 is slidably arranged at the opening of the slide groove 11, and the slider 12 is connected to the bottom of the slide groove 11 by a pull wire 13; a limit ring 14 is fixedly arranged in the slide groove 11, and preferably, a limit ring 14 is integrally formed in the slide groove 11, and a spring 15 is arranged between the limit ring 14 and the slider 12; a through hole is arranged on the ventilation grille 10, and the through hole passes through the outer side surface of the ventilation grille 10 and the slide groove 11; A push rod 17 is provided for sliding, and the outer end of the push rod 17 extends out of the through hole, and the inner end of the push rod 17 cooperates with the pull wire 13. Preferably, a threading hole is provided at the inner end of the push rod 17, and the pull wire 13 passes through the threading hole. Of course, a push block can also be provided at the inner end of the push rod 17, and the push block is slidably provided in the slide groove 11, and one side of the push block is against the pull wire 13. When the push rod 17 is pushed inward, the push block pushes the pull wire 13; a fixed groove 20 cooperating with the slider 12 is provided on the inner side of the fixed frame 9. One end of the slider 12 is located in the slide groove 11, and the other end is located in the fixed groove 20, so that the ventilation grille 10 is fixed inside the fixed frame 9; when the ventilation grille 10 needs to be disassembled, the push rod 17 is pressed, and the inner end of the push rod 17 pulls the pull wire 13, thereby driving the slider 12 to move inside the slide groove 11 until the slider 12 exits the fixed groove 20, and the fixing effect of the slider 12 is released. The ventilation grille 10 is removable, which facilitates the cleaning of the ventilation grille 10. In order to better press the push rod 17, a pressing portion 18 is provided after the outer end of the push rod 17 extends out of the through hole. Preferably, the side of the slide groove 11 opposite to the through hole is concave to form an extension groove 19, and when the push rod 17 is pressed, the inner end of the push rod 17 can penetrate into the extension groove 19.

[0023] The utility model also includes a filtering mechanism. The filtering mechanism is arranged at the water inlet end of the circulating water pipe 21, and the water inlet end is located in the water collecting tank 6. The filtering mechanism includes a filter screen 23 and a shell 24. The filter screen 23 is tubular, and the top of the filter screen 23 is open. The bottom end of the filter screen 23 is retracted and provided with a sewage outlet 25 that penetrates the bottom surface of the tower body 1. The sewage outlet 25 is disassembled and provided with a cover plate 26. The cover plate 26 can seal the sewage outlet 25 to prevent the spray water from flowing out. Preferably, the disassembly arrangement of the sewage outlet 25 and the cover plate 26 is bolted. The shell 24 is tubular, and a connecting ring 27 is respectively arranged at both ends of the shell 24. The shell 24 is sleeved on the outside of the filter screen 23 through the connecting ring 27. The spray water between the filter screen 23 and the shell 24 is filtered. A water outlet is arranged on one side of the shell 24, and the water outlet is connected to the water inlet end of the circulating water pipe 21. The spray water is filtered before entering the circulation mechanism 7 to reduce the risk of impurities blocking the spray outlet.

[0024] Preferably, a plate filter 28 is provided inside the ventilation grille 10, and the upper and lower sides of the ventilation grille 10 extend inward to form an extension plate 29, and slots 30 are provided on the opposite surfaces of the two extension plates 29, and plug blocks 31 matching the slots 30 are provided on the plate filter 28. The plate filter 28 is plugged into one side of the ventilation grille 10 to further reduce the risk of impurities contaminating the spray water.

[0025] Preferably, the inner bottom surface of the fixing frame 9 is a slope that slopes inward from top to bottom, so that water flowing down from the inner wall of the tower body 1 directly drips onto the slope of the fixing frame 9 and then flows back into the water collecting tank 6 .

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A counter-flow closed cooling tower, characterized in that: The tower body (1) comprises a tower body (1), wherein the top end of the tower body (1) is provided with an opening, and a fan (2) is provided at the opening; a water collector (3), a spray mechanism (4), a heat exchange coil (5) and a water collecting tank (6) are provided in sequence from top to bottom inside the cavity of the tower body (1); the spray mechanism (4) and the water collecting tank (6) are connected via a circulation mechanism (7); An air inlet (8) is provided at the bottom of the side wall of the tower body (1); at the air inlet (8), the side wall of the tower body (1) extends outward to form a fixed frame (9), and a ventilation grille (10) is removably provided in the fixed frame (9); The top and bottom surfaces of the ventilation grille (10) are respectively concave to form a slide groove (11); a slider (12) is slidably arranged at the opening of the slide groove (11); the slider (12) is connected to the bottom of the slide groove (11) via a pull wire (13); a limit ring (14) is fixedly arranged in the slide groove (11); a spring (15) is arranged between the limit ring (14) and the slider (12); a through hole is arranged on the ventilation grille (10), and the through hole passes through the outer side surface of the ventilation grille (10) and the slide groove (11); a push rod (17) is slidably arranged in the through hole, the outer end of the push rod (17) extends out of the through hole, and the inner end of the push rod (17) cooperates with the pull wire (13); a fixing groove (20) cooperating with the slider (12) is arranged on the inner side of the fixed frame (9).

2. A counter-flow closed cooling tower as claimed in claim 1, characterized in that: The outer end of the push rod (17) is provided with a pressing portion (18) after extending out of the through hole; and a side of the slide groove (11) opposite to the through hole is concave to form an extension groove (19).

3. A counter-flow closed cooling tower as claimed in claim 1, characterized in that: The inner end of the push rod (17) is provided with a threading hole, and the pull wire (13) passes through the threading hole.

4. A counter-flow closed cooling tower as claimed in claim 1, characterized in that: It also includes a filtering mechanism; the circulating mechanism (7) includes a circulating water pipe (21) connecting the spray mechanism (4) and the water collecting tank (6), and the circulating water pipe (21) is provided with a water pump (22); the filtering mechanism is arranged at the water inlet end of the circulating water pipe (21), and the water inlet end is located in the water collecting tank (6); the filtering mechanism includes a filtering screen (23) and a housing (24); the filtering screen (23) is tubular, the top end of the filtering screen (23) is open, and the filtering screen (23) is provided with a filter. The bottom end of the net (23) is retracted to be provided with a sewage outlet (25) penetrating the bottom surface of the tower body (1), and a cover plate (26) is detachably provided on the sewage outlet (25); the outer shell (24) is tubular, and a connecting ring (27) is provided at each end of the outer shell (24), and the outer shell (24) is sleeved on the outside of the filter net (23) through the connecting ring (27); a water outlet is provided on one side of the outer shell (24), and the water outlet is connected to the water inlet end of the circulating water pipe (21).

5. A counter-flow closed cooling tower as claimed in claim 1, characterized in that: A plate-shaped filter screen (28) is arranged on the inner side of the ventilation grille (10); upper and lower sides of the ventilation grille (10) respectively extend inwards to form an extension plate (29); slots (30) are respectively arranged on opposite surfaces of the two extension plates (29); and insert blocks (31) matching the slots (30) are arranged on the plate-shaped filter screen (28).

6. A counter-flow closed cooling tower as claimed in claim 1, characterized in that: The inner bottom surface of the fixing frame (9) is a slope that slopes inward from top to bottom.

Images