CN218973310U

CN218973310U - Adjustable dustproof device of open type circulating water cooling tower

Info

Publication number: CN218973310U
Application number: CN202320115959.4U
Authority: CN
Inventors: 郭科伟; 郭培强; 刘磊; 顾晓双; 杨国洞; 王卫敏; 闫雪梅; 郭光增; 张赐祥
Original assignee: Jiangxi Xinlianxin Chemical Industry Co ltd
Current assignee: Jiangxi Xinlianxin Chemical Industry Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-05-05
Anticipated expiration: 2033-01-31

Abstract

The utility model belongs to an adjustable dustproof device of an open type circulating water cooling tower; the circulating water cooling tower comprises a circulating water cooling tower body, wherein a water receiver is arranged in the circulating water cooling tower body, a circulating water spraying pipeline and a packing layer are sequentially arranged at the lower part of the water receiver, a cold water tank is arranged at the bottom of the circulating water cooling tower body, a water falling layer is arranged between the packing layer and the cold water tank, a protection frame is arranged at the outer side of the water falling layer, and a dust prevention unit is arranged at the outer side of the protection frame; the dustproof unit comprises a power part which is connected with the liftable filtering part; the filtering part can be arranged at the outer side of the water falling layer and used for preventing impurities carried in the outside air from entering the circulating water cooling tower body, so that the defects that the impurities enter the circulating water to pollute the circulating water, influence the service life of related equipment and influence the heat exchange effect are avoided.

Description

Adjustable dustproof device of open type circulating water cooling tower

Technical Field

The utility model belongs to the technical field of accessory parts of a circulating water cooling tower, and particularly relates to an adjustable dust-proof device of an open circulating water cooling tower.

Background

The industrial circulating water cooling system mainly comprises four parts of industrial production heating equipment, industrial cooling heat exchange equipment, a circulating water pump and an industrial pipeline, and the types of the circulating water cooling system can be divided into two types, namely an open type (or an open type) and a closed type. The working process is that the industrial cooling medium is subjected to heat exchange through the equipment, the temperature is reduced, and then the industrial cooling medium flows back to the industrial production heating equipment again for cyclic application, and the industrial circulating medium is used as the medium to transfer the heat generated by the production equipment to the nature.

The closed cooling tower needs to consume cold energy, based on which most enterprises choose to adopt an open (or open type) cooling tower, and the open type cooling tower mainly adopts the steps that a medium to be cooled is conveyed to the upper part of the cooling tower, and then exchanges heat with external air under the gravity of the cooling tower so as to achieve the purpose of cooling; the outside air mainly comes from a water falling layer section at the upper part of the cooling water tank, the periphery of the water falling layer section is generally or two corresponding sides are not blocked by a building, the outside air enters the cooling tower under the action of a fan at the top of the cooling tower, and the air and the falling cooling medium are in countercurrent contact for heat exchange so as to achieve the purpose of cooling the cooling medium; in the process, the water falling layer section has no building obstruction, so impurities carried in the outside air are easy to enter the cooling tower, the impurities not only pollute the cooling medium, but also block the pipeline and/or the impeller of the circulating water pump, and further influence the heat exchange effect of the heat exchange equipment; in order to overcome the defects, a part of enterprises install a filter screen (namely passive filtration) between a cold water tank and a circulating water pump, and the following defects exist in the mode: 1. the problem of contamination of the cooling medium by impurities is not solved because of passive filtration; 2. when the filter screen is blocked, the service life of equipment such as a circulating water pump and the like can be influenced; 3. when the filter screen is blocked and needs to be cleaned, the filter screen is cleaned, and the whole cooling water tank is cleaned at the same time, so that the problem of repeated blocking is avoided; the cleaning process is not suitable for large machinery because the cleaning process is positioned in the cooling tower, and has the defects of high cleaning cost, high labor intensity and low working efficiency.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides an adjustable dustproof device of an open type circulating water cooling tower.

The technical aim of the utility model is realized by the following technical scheme:

the adjustable dustproof device of the open type circulating water cooling tower comprises a circulating water cooling tower body, a fan with a motor is arranged at a gas outlet at the top of the circulating water cooling tower body, a water collector for collecting water in gas is arranged at the upper part in the circulating water cooling tower body, a circulating water spraying pipeline and a packing layer are sequentially arranged at the lower part of the water collector, a cooling water tank is arranged at the bottom of the circulating water cooling tower body, a water falling layer for introducing external air to exchange heat with circulating water is arranged between the packing layer and the cooling water tank, a protection frame for supporting a dustproof unit is arranged at the outer side of the water falling layer, and a liftable dustproof unit is arranged at the outer side of the protection frame; the dustproof unit comprises at least one power part arranged at the top of the protective frame, and the power part is connected with the liftable filtering part.

The utility model abandons passive filtration in the prior art and changes the passive filtration into active filtration, in particular to the utility model, the filtering part is arranged at the outer side of the water falling layer and is used for preventing impurities carried in the outside air from entering the circulating water cooling tower body, thereby avoiding the defects that the impurities enter the circulating water to pollute the circulating water, influence the service life of related equipment and influence the heat exchange effect; further, in order to ensure the cooling effect of the circulating water, the filtering part is arranged in a lifting state, the lifting state can meet the requirement that the filtering part is lowered under the condition of more impurities to prevent the impurities from entering the circulating water cooling tower body, and the filtering part is lifted under the condition of less impurities in the air so as to achieve the characteristic of fully exchanging heat between the outside air and the circulating water, and particularly, the heat exchange effect of the cooling circulating water can be ensured in summer with higher air temperature; the utility model can provide a position for the installation of the dustproof unit by arranging the protective frame.

Preferably, the bottom of protection frame links to each other with the outer wall in cool water pond, and the top of protection frame links to each other with the corresponding circulating water cooling tower body outer wall in packing layer, and the inside of protection frame is equipped with the strengthening rib, is equipped with the shower nozzle with filter unit looks adaptation on the strengthening rib, and the shower nozzle is linked together with the inside in cool water pond through the pump.

The beneficial effects are that: according to the utility model, through the arrangement, the protection frame can be firmly fixed, the reinforcing ribs are arranged in the protection frame, the integral strength of the protection frame can be improved, and the water spraying system is arranged on the basis, so that the filtering part can be cleaned, the problem that the normal operation of the whole system is influenced due to the blocking of the filtering holes of the filtering part is avoided, and meanwhile, the labor intensity is reduced.

Preferably, the dustproof unit comprises three power parts, and each power part is connected with a corresponding filtering part; the power parts corresponding to the inner filtering parts are arranged at the lower parts of the other two power parts, the power parts corresponding to the middle filtering parts are arranged between the other two power parts, and the power parts corresponding to the outer filtering parts are arranged at the upper parts of the other two power parts.

The beneficial effects are that: the dustproof unit is provided with the combination of the three sets of power parts and the filtering part, and the proper combination of the power parts and the filtering part can be selected according to the impurity types in the outside air, so that the aim of improving the air quantity entering the circulating water cooling tower body is fulfilled, and the cooling effect of circulating water is ensured.

Preferably, the power part comprises a lifting motor connected with the outer wall of the circulating water cooling tower body corresponding to the packing layer, a main shaft of the lifting motor is connected with a rotating shaft arranged on the outer side of the top of the protection frame, and the rotating shaft is connected with one end of the flexible filter screen in the filtering part.

The beneficial effects are that: the flexible filter screen is connected with the rotating shaft, so that the flexible filter screen can be lifted and lowered, and the flexible filter screen can be blown to the direction in the circulating water cooling tower body by wind under the action of strong wind and negative pressure in the circulating water cooling tower body, and the flexible filter screen can be limited through the protective frame at the moment so as to ensure the stable operation of the whole equipment.

Preferably, the filtering part comprises a flexible filter screen, and two sides of the flexible filter screen are respectively and movably arranged in the guide groove; the guide groove is divided into an upper guide groove and a lower guide groove, wherein the upper guide groove is arranged in a downward inclined mode, the lower guide groove extends downwards vertically, and the upper guide groove and the lower guide groove are of an integrated structure.

The beneficial effects are that: the power part is arranged on the same plane, so that the aim of convenient installation is fulfilled, and the lifting of the flexible filter screen can be guided through the guide groove.

Preferably, the flexible filter screen in the inner filter part is a dust suppression filter screen, the flexible filter screen in the middle filter part is a second stainless steel filter screen, and the flexible filter screen in the outer filter part is a first stainless steel filter screen for filtering catkin.

Preferably, the aperture of the dust suppression filter screen is 150-180 micrometers, the aperture of the second stainless steel filter screen is 300 micrometers, and the aperture of the first stainless steel filter screen is 0.85 millimeter.

Preferably, the reinforcing rib is provided with an air quantity measuring instrument.

The beneficial effects are that: according to the utility model, the air quantity measuring instrument is adopted to detect the air quantity entering the circulating water cooling tower body, the detection can ensure the normal operation of the circulating water cooling tower body, and meanwhile, the data support can be provided for selecting the filter screen and cleaning the filter screen.

Preferably, the other end of the flexible filter screen is provided with a hook, the outer side of the top of the cold water pool is provided with a patrol corridor, and the patrol corridor and the hook are provided with metal fixing pieces on the ground corresponding to each other.

The beneficial effects are that: when the flexible filter screen is unfolded, one end of the flexible filter screen is connected with the rotating shaft, the other end of the flexible filter screen is connected with the metal fixing piece through the hook, both sides of the flexible filter screen are guided and limited through the guide grooves, and the protective frame with the reinforcing ribs is arranged at the rear part of the flexible filter screen, so that the flexible filter screen can be limited and fixed, and the problems of displacement or damage of the flexible filter screen caused by strong wind weather are avoided; meanwhile, the inspection corridor is arranged, so that an installation position is provided for the metal fixing piece, and subsequent inspection and maintenance are convenient.

The utility model filters large impurities and small impurities in the air, and prevents the large impurities and the small impurities from entering the circulating water cooling tower body so as to realize the purpose of active filtration; the large impurities are represented by poplar catkins and the like, the small impurities are represented by sand dust and the like smaller than the poplar catkins, so that the defects that the impurities enter the circulating water cooling tower body to pollute circulating water and influence the service life of a pump and the heat exchange effect of heat exchange equipment are caused are realized; the method takes the data of the air volume measuring instrument as the reference to ensure the stable operation of the circulating water cooling tower body and the selection of the filter screen, and can adjust in time after the data of the air volume measuring instrument are changed (for example, when the air volume is reduced, the filter holes in the filter screen are cleaned through the spray head to ensure the normal air volume); the utility model also cleans the filter screen by arranging the spray head so as to achieve the purpose of reducing labor intensity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic diagram showing the positional relationship between the protection frame and the dust-proof unit.

FIG. 3 is a schematic structural view of the protection frame of the present utility model.

Fig. 4 is a schematic structural view of the dust-proof unit of the present utility model.

Fig. 5 is a partial enlarged view of a portion a in fig. 4.

In the upper graph:

1. a circulating water cooling tower body; 2. a blower; 3. a water collector; 4. a circulating water spray pipe; 5. a filler layer; 6. a cool water tank; 7. a water falling layer; 8. a protective frame; 9. reinforcing ribs; 10. a spray head; 11. a pump; 12. a lifting motor; 13. a rotation shaft; 14. a guide groove; 15. a first stainless steel filter screen; 16. a second stainless steel filter screen; 17. dust suppression filter screen; 18. an air quantity measuring instrument; 19. a hook; 20. inspecting the corridor; 21. a metal fixing member; 22. a first circulating water pump; 23. a system heat exchange device; 24. and a second circulating water pump.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Referring to fig. 1, the utility model relates to an adjustable dust-proof device of an open type circulating water cooling tower, which comprises a circulating water cooling tower body 1, wherein a fan 2 with a motor is arranged at a gas outlet at the top of the circulating water cooling tower body 1, a water receiver 3 for capturing water in gas is arranged at the upper part in the circulating water cooling tower body 1, a circulating water spray pipeline 4 and a packing layer 5 are sequentially arranged at the lower part of the water receiver 3, and a cooling water tank 6 is arranged at the bottom of the circulating water cooling tower body 1; after being cooled by circulating water in the cooling water tank 6, the circulating water enters a system heat exchange device 23 through a first circulating water pump 22 for heat exchange, the circulating water after heat exchange enters a circulating water spray pipeline 4 through a second circulating water pump 24, and the whole circulating system forms an industrial circulating water cooling system; a water falling layer 7 for introducing external air to exchange heat with the circulating water is arranged between the packing layer 5 and the cold water tank 6, and the water falling layer 7 can be formed by no building on the periphery or at least no building on the two corresponding sides so as to realize that the external air enters the circulating water cooling tower body 1 to exchange heat with the circulating water; as can be seen from fig. 1, the protection frame 8 is disposed on the outer side of the water-falling layer 7, and the protection frame 8 can achieve the purpose of facilitating the installation of the dust-proof unit, wherein the dust-proof unit is liftable to meet the requirement of the circulating water cooling tower body 1 for external air, and the liftable dust-proof unit in the utility model specifically refers to a liftable filtering part connected with a power part.

Further, referring to fig. 2, 3 and 4, in the present utility model, the bottom of the protection frame 8 is connected to the outer wall of the cold water tank 6, the top of the protection frame 8 is connected to the outer wall of the circulating water cooling tower body 1 corresponding to the packing layer 5, the inside of the protection frame 8 is provided with a reinforcing rib 9, the reinforcing rib 9 is provided with a spray head 10 adapted to the filtering part, and the spray head 10 is communicated with the inside of the cold water tank 6 through a pump 11. According to the utility model, the circulating cooling water in the cold water tank 6 is used as the cleaning water of the filter screen, the filter screen is cleaned through the spray head 10 after being pressurized by the pump 11, and the cleaning comprises the cleaning when the filter screen is collected and the cleaning when the filter screen is blocked, so that the purposes of keeping the requirement of the circulating water cooling tower body 1 on the outside air and reducing the labor intensity are realized; the protection frame 8 is connected with the outer wall of the cold water tank 6 and the outer wall of the circulating water cooling tower body 1 corresponding to the packing layer 5, so that the protection frame 8 can be firmly fixed, the structure of the protection frame 8 can be more firmly and reliably realized by arranging the reinforcing ribs 9, and meanwhile, the convenience is provided for the installation of the spray head 10 and the air volume measuring instrument 18; the air quantity measuring instrument 18 can provide data support for the quantity of external air entering the circulating water cooling tower body 1, and the data support can provide data support for the selection of the filter screen and the cleaning time of the cleaning water to the filter screen so as to ensure the long-time stable operation of the circulating water cooling tower body 1; the dustproof unit comprises three power parts, wherein each power part is connected with a corresponding filtering part; the power parts corresponding to the inner filtering parts are arranged at the lower parts of the other two power parts, the power parts corresponding to the middle filtering parts are arranged between the other two power parts, and the power parts corresponding to the outer filtering parts are arranged at the upper parts of the other two power parts. Through the combined form of three power portions and three filtration portion, can realize selecting the characteristics of filtration portion to impurity size, this characteristics have not only satisfied the filtration to the impurity but also satisfied the demand of circulating water cooling tower body 1 entering air volume. The power part comprises a lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the packing layer 5, a main shaft of the lifting motor 12 is connected with a rotating shaft 13 arranged on the outer side of the top of the protection frame 8, and the rotating shaft 13 is connected with one end of a flexible filter screen in the filtering part. The filtering part comprises a flexible filter screen, and two sides of the flexible filter screen are respectively and movably arranged in the guide groove 14; the guide groove 14 is divided into an upper guide groove and a lower guide groove, the upper guide groove is arranged obliquely downwards, the lower guide groove extends downwards vertically, and the upper guide groove and the lower guide groove are of an integrated structure. The arrangement provides power support and guidance for lifting and lowering the flexible filter screen, and can facilitate the lifting motor 12 to be arranged on the same horizontal plane; as described above, the water-falling layer of the circulating water cooling tower body 1 may be in the form of no building around, or may be in the form of a corresponding structure without building on two sides; when the water falling layer of the circulating water cooling tower body 1 is in a form of no building on the periphery, the combination of the protection frame 8 and the dustproof units is a plurality of, and the protection frame and the dustproof units are wrapped on the periphery of the water falling layer; when the water falling layer of the circulating water cooling tower body 1 is in a corresponding structure form without buildings on two sides, as shown in fig. 4, the lifting motor 12 can be arranged on the end part of the side wall of the circulating water cooling tower body 1 corresponding to the packing layer 5; the lifting motor 12 is connected with a rotating shaft 13 arranged on the outer side of the top of the protective frame 8 through a main shaft, the rotating shaft 13 can be connected with the protective frame 8 through a bearing seat (not shown in the figure) with a bearing, and the structural form can ensure that the rotating shaft 13 and the lifting motor 12 are both in fastening connection; the two sides of the flexible filter screen can be provided with the sliding blocks (not shown in the figure), the sliding blocks are movably clamped in the guide grooves 14, so that the sliding function is realized, the positioning of the flexible filter screen can be realized, and the problem that the side parts of the flexible filter screen slide out of the guide grooves 14 in windy weather is avoided;

further, referring to fig. 2, 4 and 5, the protection frame 8 with reinforcing ribs is provided in the present utility model, the rotating shaft 13 is connected with one end of a flexible filter screen in the filtering portion, the other end of the flexible filter screen is provided with a hook 19, two sides of the flexible filter screen are respectively movably disposed in the guide groove 14, an inspection corridor 20 is disposed at the outer side of the top of the cold water pool 6, and a metal fixing member 21 is disposed on the ground corresponding to the hook 19 in the inspection corridor 20. The structure can ensure that the two ends, two sides and the rear part of the flexible filter screen are fixed or limited, the flexible filter screen is influenced by weather factors and negative pressure in the circulating water cooling tower body 1, the flexible filter screen and the retrograde protection can be furthest protected by the fixation or the limitation, the displacement and the damage of the flexible filter screen are avoided, and the purpose of prolonging the service life of the flexible filter screen is realized; meanwhile, the inspection corridor 20 is arranged to achieve the purpose of convenient inspection and maintenance, and a foundation is provided for the installation of the metal fixing piece 21.

Further, referring to fig. 4, the flexible filter screen in the inner filter part is a dust suppression filter screen 17, the flexible filter screen in the middle filter part is a second stainless steel filter screen 16, and the flexible filter screen in the outer filter part is a first stainless steel filter screen 15 for filtering catkin. The aperture of the dust suppression filter screen 17 is 150-180 micrometers, the aperture of the second stainless steel filter screen 16 is 300 micrometers, and the aperture of the first stainless steel filter screen 15 is 0.85 millimeter. The filter screen is mainly used for filtering sundries in air, and is mainly arranged according to the mode that the aperture of the filter hole of the filter screen at the outer side is large, the aperture of the filter hole of the filter screen at the middle part is suitable for being arranged in a mode that the aperture of the filter hole of the filter screen at the inner side is small, the filter screen is selected so as to ensure the air quantity entering the circulating water cooling tower body 1 while effectively filtering the sundries, and the normal operation of the circulating water cooling tower body 1 is realized; in actual working conditions, the variety of sundries is more, and the utility model cannot be used for exhaustion, so that common poplar catkin and sand dust are used as references, namely sundries which are larger than or equal to the poplar catkin are used as references, and the sundries are filtered mainly through the first stainless steel filter screen 15; the sundries smaller than poplar catkin are mainly filtered through a second stainless steel filter screen 16 and a dust suppression filter screen 17 by taking sand as an example, and a filter screen with larger aperture is preferably adopted when the sundries do not enter the circulating water cooling tower body 1 so as to ensure the air quantity entering the circulating water cooling tower body 1; based on the influence of the wind power and the particle size of the sand and dust contained in the air, the second stainless steel filter screen 16, the dust suppression filter screen 17, the second stainless steel filter screen 16 and the dust suppression filter screen 17 can be sequentially selected to realize double-layer filtration, so as to ensure that sundries such as sand and dust are prevented from entering the circulating water cooling tower body 1 as much as possible.

The dustproof method of the adjustable dustproof device of the open circulating water cooling tower comprises the following steps of:

step 1: circulating water of the system enters the circulating water cooling tower body 1 through the circulating water spraying pipeline 4, the circulating water enters the packing layer 5 under the action of gravity, the packing layer 5 increases the resistance and the contact area of the circulating water to cool, hot steam water mist in the circulating water goes into the water collector 3, the water collector 3 collects water carried in gas, and the gas after water collection is discharged outside under the action of the fan 2 of the electric motor; circulating water passing through the packing layer 5 continuously descends, passes through the water falling layer 7 and enters the cold water tank 6, and the circulating water cooled in the cold water tank 6 enters the system heat exchange device 23 through the first circulating water pump 22;

step 2: when the circulating water cooling tower body 1 normally operates, air outside the water falling layer 7 passes through the protection frame 8, enters the water falling layer 7, exchanges heat with circulating water, and then goes upward and is discharged outside under the action of the fan 2 with a motor;

step 3: when poplar catkin exists, the lifting motor 12 in the power part corresponding to the outer filtering part is started, the lifting motor 12 drives the rotary shaft 13 to rotate positively through the main shaft, the rotary shaft 13 drives the corresponding first stainless steel filter screen 15 to be unfolded when rotating, the first stainless steel filter screen 15 moves towards the direction of the inspection corridor 20 through the corresponding guide groove 14, and finally the hook 19 at the other end of the first stainless steel filter screen 15 is hung on the corresponding metal fixing piece 21;

step 4: when no poplar catkin exists, the pump 11 is started, circulating water of the cold water pond 6 is pressurized by the pump 11 and then is sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the first stainless steel filter screen 15, after washing, the hook 19 at the other end of the first stainless steel filter screen 15 is separated from the corresponding metal fixing piece 21, the lifting motor 12 in the power part corresponding to the outer filtering part is started, the lifting motor 12 drives the rotating shaft 13 to reversely rotate through the main shaft, the rotating shaft 13 drives the corresponding first stainless steel filter screen 15 to be retracted when rotating, and the first stainless steel filter screen 15 moves towards the rotating shaft 13 through the corresponding guide groove 14;

step 5: when the dust-proof device is in a dust-proof weather, the middle filtering part and/or the inner filtering part is/are selected to be suitable for through the air quantity of the air quantity measuring instrument 18, the lifting motor 12 in the power part is started, the lifting motor 12 drives the rotating shaft 13 to rotate positively through the main shaft, the rotating shaft 13 drives the second stainless steel filter screen 16 and/or the dust suppression filter screen 17 to be unfolded when rotating, the second stainless steel filter screen 16 and/or the dust suppression filter screen 17 move towards the direction of the inspection corridor 20 through the corresponding guide groove 14, and finally the other ends of the second stainless steel filter screen 16 and/or the dust suppression filter screen 17 are respectively connected with the corresponding metal fixing pieces 21; the air volume of the air volume measuring instrument 18 refers to the air volume which satisfies the normal operation of the circulating water cooling tower body 1 when the filter screen in the middle filtering part and/or the inner filtering part filters;

step 6: when the sand and dust weather is over, the corresponding filter screen is retracted after the filter screen is cleaned through the spray head 10;

when the dust suppression filter screen 17 is singly used, the pump 11 is started, circulating water of the cold water tank 6 is pressurized by the pump 11 and then is sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the dust suppression filter screen 17, after washing, the hook 19 at the other end of the dust suppression filter screen 17 is separated from the corresponding metal fixing piece 21, the lifting motor 12 in the power part corresponding to the inner side filter part is started, the lifting motor 12 drives the rotary shaft 13 to reversely rotate through the main shaft, and when the rotary shaft 13 rotates, the corresponding dust suppression filter screen 17 is driven to be retracted, and the dust suppression filter screen 17 moves towards the rotary shaft 13 through the corresponding guide groove 14;

when the second stainless steel filter screen 16 is independently used, the pump 11 is started, so that circulating water in the cold water tank 6 is pressurized by the pump 11 and then is sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the second stainless steel filter screen 16, after washing, the hook 19 at the other end of the second stainless steel filter screen 16 is separated from the corresponding metal fixing piece 21, the lifting motor 12 in the power part corresponding to the middle filtering part is started, the lifting motor 12 drives the rotary shaft 13 to reversely rotate through the main shaft, the rotary shaft 13 drives the corresponding second stainless steel filter screen 16 to retract when rotating, and the second stainless steel filter screen 16 moves towards the rotary shaft 13 through the corresponding guide groove 14;

when the dust suppression filter screen 17 and the second stainless steel filter screen 16 are used simultaneously, the pump 11 is started firstly, circulating water in the cold water tank 6 is pressurized by the pump 11 and then is sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the dust suppression filter screen 17, after washing, the hook 19 at the other end of the dust suppression filter screen 17 is separated from the corresponding metal fixing piece 21, the lifting motor 12 in the power part corresponding to the inner side filter part is started, the lifting motor 12 drives the rotary shaft 13 to reversely rotate through the main shaft, the rotary shaft 13 drives the corresponding dust suppression filter screen 17 to retract when rotating, and the dust suppression filter screen 17 moves towards the rotary shaft 13 through the corresponding guide groove 14; starting the pump 11 again, pressurizing the circulating water in the cold water tank 6 by the pump 11, then delivering the circulating water to the spray head 10, flushing the second stainless steel filter screen 16 by the circulating water sprayed by the spray head 10, separating a hook 19 at the other end of the second stainless steel filter screen 16 from a corresponding metal fixing piece 21 after flushing, starting a lifting motor 12 in a power part corresponding to the middle filtering part, driving a rotary shaft 13 to reversely rotate by the lifting motor 12 through a main shaft, driving the corresponding second stainless steel filter screen 16 to retract when the rotary shaft 13 rotates, and moving the second stainless steel filter screen 16 to the direction of the rotary shaft 13 through a corresponding guide groove 14;

step 7: in the operation process of step 3 or step 5, the air volume measuring instrument 18 detects the air volume entering the water falling layer 7 from the outside, and when the air volume of the air volume measuring instrument 18 is smaller than a preset threshold value, the pump 11 is started, so that the circulating water in the cold water tank 6 is pressurized by the pump 11 and then is sent to the spray head 10, and the circulating water sprayed by the spray head 10 washes the filter screen.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dust keeper with adjustable open circulating water cooling tower, including circulating water cooling tower body (1), circulating water cooling tower body (1) top gas outlet department is equipped with fan (2) of taking the motor, upper portion is equipped with the receipts water ware (3) of the gaseous moisture of entrapment in circulating water cooling tower body (1), the lower part of receipts water ware (3) is equipped with circulating water spray pipe (4) and packing layer (5) in proper order, the bottom of circulating water cooling tower body (1) is equipped with cold water pond (6), for being used for introducing outside air between packing layer (5) and cold water pond (6) and carrying out water falling layer (7) of heat transfer to the circulating water, its characterized in that: the outer side of the water falling layer (7) is provided with a protection frame (8) for supporting the dustproof unit, and the outer side of the protection frame (8) is provided with a liftable dustproof unit;

the dustproof unit comprises at least one power part arranged at the top of the protective frame (8), and the power part is connected with the liftable filtering part.

2. An adjustable dust guard for an open loop cooling tower according to claim 1, wherein: the bottom of protection frame (8) links to each other with the outer wall of cold water pond (6), and the top of protection frame (8) links to each other with the corresponding circulating water cooling tower body (1) outer wall of packing layer (5), and the inside of protection frame (8) is equipped with strengthening rib (9), is equipped with shower nozzle (10) with filter unit looks adaptation on strengthening rib (9), and shower nozzle (10) are linked together with the inside of cold water pond (6) through pump (11).

3. An adjustable dust guard for an open loop cooling tower according to claim 1, wherein: the dustproof unit comprises three power parts, and each power part is connected with the corresponding filtering part;

the power parts corresponding to the inner filtering parts are arranged at the lower parts of the other two power parts, the power parts corresponding to the middle filtering parts are arranged between the other two power parts, and the power parts corresponding to the outer filtering parts are arranged at the upper parts of the other two power parts.

4. An adjustable dust guard for an open loop cooling tower according to claim 3, wherein: the power part comprises a lifting motor (12) connected with the outer wall of the circulating water cooling tower body (1) corresponding to the packing layer (5), a main shaft of the lifting motor (12) is connected with a rotating shaft (13) arranged on the outer side of the top of the protection frame (8), and the rotating shaft (13) is connected with one end of a flexible filter screen in the filtering part.

5. An adjustable dust guard for an open loop cooling tower according to claim 3, wherein: the filtering part comprises a flexible filter screen, and two sides of the flexible filter screen are respectively and movably arranged in the guide groove (14);

the guide groove (14) is divided into an upper guide groove and a lower guide groove, wherein the upper guide groove is arranged in a downward inclined mode, the lower guide groove extends downwards vertically, and the upper guide groove and the lower guide groove are of an integrated structure.

6. An adjustable dust guard for an open loop water cooling tower according to claim 3 or 4, wherein: the flexible filter screen in the inner side filter part is a dust suppression filter screen (17), the flexible filter screen in the middle side filter part is a second stainless steel filter screen (16), and the flexible filter screen in the outer filter part is a first stainless steel filter screen (15) for filtering catkin.

7. The adjustable dust guard of an open loop cooling tower of claim 6, wherein: the aperture of the dust suppression filter screen (17) is 150-180 micrometers, the aperture of the second stainless steel filter screen (16) is 300 micrometers, and the aperture of the first stainless steel filter screen (15) is 0.85 millimeter.

8. An adjustable dust guard for an open loop cooling tower according to claim 2, wherein: an air quantity measuring instrument (18) is arranged on the reinforcing rib (9).

9. The adjustable dust guard of an open loop cooling tower as set forth in claim 4, wherein: the other end of the flexible filter screen is provided with a hook (19), the outside at the top of the cold water tank (6) is provided with a patrol corridor (20), and the patrol corridor (20) and the hook (19) are corresponding to each other and are provided with metal fixing pieces (21) on the ground.