Adjustable dustproof device and dustproof method of open circulating water cooling tower

Abstract

The application belongs to an adjustable dustproof device and method of an open circulating water cooling tower, comprising a circulating water cooling tower body, a water collector arranged in the circulating water cooling tower body, a circulating water spraying pipeline and a filler layer arranged in sequence at the lower part of the water collector, a cooling water pool arranged at the bottom of the circulating water cooling tower body, a falling water layer between the filler layer and the cooling water pool, a protective frame arranged at the outer side of the falling water layer, and a dustproof unit arranged at the outer side of the protective frame; the dustproof unit comprises a power part and a filter part connected with the power part; the filter part is arranged at the outer side of the falling water layer to prevent impurities carried in the external air from entering the circulating water cooling tower body, thereby avoiding the defects of impurities entering the circulating water, causing pollution, affecting the service life of related equipment and affecting the heat exchange effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of accessory parts of circulating water cooling towers, in particular to an adjustable dustproof device and dustproof method for an open circulating water cooling tower. BACKGROUND

[0002] The main components of an industrial circulating water cooling system are industrial heat generating equipment, industrial cooling and heat exchange equipment, a circulating water pump and industrial pipelines. 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 exchanges heat through the equipment and reduces the temperature, and then returns to the industrial heat generating equipment for circulation application. The heat generated by the production equipment is transferred to the natural world by using the industrial circulating medium as the medium.

[0003] The closed cooling tower needs to consume cold energy. Therefore, most enterprises choose to use an open cooling tower (or an open cooling tower). The open cooling tower mainly uses the cooling medium to be transported to the upper part of the cooling tower, and then exchanges heat with the outside air under the action of its own gravity to achieve the purpose of cooling. The outside air mainly comes from the falling water layer section at the upper part of the cooling tower. The falling water layer section is generally not blocked by buildings on all sides or corresponding two sides. The outside air enters the cooling tower under the action of the fan at the top of the cooling tower. The air and the falling cooling medium contact in counterflow to exchange heat, so as to achieve the purpose of cooling the cooling medium. In the above process, the impurities carried in the outside air are easy to enter the inside of the cooling tower because the falling water layer section is not blocked by buildings. The impurities not only pollute the cooling medium, but also block the impeller of the circulating water pump, which further affects the heat exchange effect of the heat exchange equipment. In order to overcome the above defects, some enterprises install a filter screen (i.e. passive filtration) between the cooling tower and the circulating water pump. This method has the following defects: 1. Since it is passive filtration, the problem of impurities polluting the cooling medium has not been solved; 2. When the filter screen is blocked, the service life of the circulating water pump and other equipment is affected; 3. When the filter screen needs to be cleaned, not only the filter screen itself needs to be cleaned, but also the entire cooling tower needs to be cleaned to avoid repeated blocking. The above cleaning process is not suitable for large machinery because it is in the inside of the cooling tower, and has the defects of high cleaning cost, high labor intensity and low working efficiency. SUMMARY

[0004] The purpose of the present application is to overcome the defects in the prior art and provide an adjustable dustproof device and dustproof method for an open circulating water cooling tower.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] The adjustable dustproof device of the open circulating water cooling tower comprises a circulating water cooling tower body, a fan with a motor is arranged at the gas outlet of the top of the circulating water cooling tower body, a water collector for collecting water in the gas is arranged at the upper portion of the circulating water cooling tower body, a circulating water spraying pipeline and a filler layer are sequentially arranged at the lower portion of the water collector, a cooling water pool is arranged at the bottom of the circulating water cooling tower body, a falling water layer for introducing external air to exchange heat with the circulating water is arranged between the filler layer and the cooling water pool, a protective frame for supporting the dustproof unit is arranged at the outer side of the falling water layer, and a liftable dustproof unit is arranged at the outer side of the protective frame; the dustproof unit comprises at least one power unit arranged at the top of the protective frame, and the power unit is connected with a liftable filtering unit.

[0007] The present application discards the passive filtration in the traditional technology and changes it into active filtration, specifically, the filtering unit is arranged at the outer side of the falling water layer to prevent impurities carried in the external air from entering the circulating water cooling tower body, thereby avoiding the defects that the impurities enter the circulating water to cause pollution, affect the service life of related equipment and affect the heat exchange effect; further, in order to ensure the cooling effect of the circulating water, the filtering unit is arranged in a liftable state, the lifting state can meet the requirements that the filtering unit is lowered to prevent impurities from entering the circulating water cooling tower body in the case that the impurities are much, and the filtering unit is lifted to achieve the characteristics that the external air and the circulating water are fully exchanged in the case that the impurities in the air are few, especially in the summer with high temperature, the heat exchange effect of the cooling circulating water can be ensured; the protective frame can provide a position for the installation of the dustproof unit.

[0008] Preferably, the bottom of the protective frame is connected with the outer wall of the cooling water pool, the top of the protective frame is connected with the outer wall of the circulating water cooling tower body corresponding to the filler layer, the inside of the protective frame is provided with a reinforcing rib, and a spray head matched with the filtering unit is arranged on the reinforcing rib and connected with the inside of the cooling water pool through a pump.

[0009] Beneficial effects: the above-mentioned arrangement can realize the firm fixing of the protective frame, the reinforcing rib arranged in the inside of the protective frame can improve the overall strength of the protective frame, the water spraying system arranged on the basis can realize the cleaning of the filtering unit, thereby avoiding the problem that the filtering holes of the filtering unit are blocked to affect the normal operation of the whole system, and the labor intensity is reduced.

[0010] Preferably, the dustproof unit comprises three power units, each power unit is connected with a corresponding filtering unit; the power unit corresponding to the inner filtering unit is arranged at the lower portion of the other two power units, the power unit corresponding to the middle filtering unit is arranged between the other two power units, and the power unit corresponding to the outer filtering unit is arranged at the upper portion of the other two power units.

[0011] Beneficial effects: the dustproof unit in the application sets three sets of power parts and filter parts, which can select appropriate power parts and filter parts according to the impurity types in the external air, so as to improve the air amount entering the circulating water cooling tower body, thereby ensuring the cooling effect of the circulating water.

[0012] Preferably, the power part comprises a lifting motor connected to the outer wall of the circulating water cooling tower body corresponding to the filler layer, the main shaft of the lifting motor is connected to a rotating shaft arranged on the outer side of the top of the protective frame, and one end of the flexible filter screen in the filter part is connected to the rotating shaft.

[0013] Beneficial effects: the flexible filter screen is connected to the rotating shaft, and under the action of wind and negative pressure in the circulating water cooling tower body, the flexible filter screen is blown towards the inside of the circulating water cooling tower body, and the flexible filter screen is limited by the protective frame at this time, so that the stable operation of the whole equipment is ensured.

[0014] Preferably, the filter part comprises a flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of the guide groove; the guide groove is divided into an upper guide groove and a lower guide groove, the upper guide groove is arranged downwardly inclined, the lower guide groove is vertically extended downwardly, and the upper guide groove and the lower guide groove are of an integrated structure.

[0015] Beneficial effects: the power part is arranged on the same plane, so that the purpose of convenient installation is achieved, and the lifting of the flexible filter screen is guided through the guide groove.

[0016] 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 catkins.

[0017] Preferably, the pore size of the dust suppression filter screen is 150-180 microns, the pore size of the second stainless steel filter screen is 300 microns, and the pore size of the first stainless steel filter screen is 0.85 millimeters.

[0018] Preferably, the reinforcing rib is provided with an air volume measuring instrument.

[0019] Beneficial effects: the air volume measuring instrument can detect the air volume entering the circulating water cooling tower body, which can ensure the normal operation of the circulating water cooling tower body, and can provide data support for selecting and cleaning the filter screen.

[0020] Preferably, the other end of the flexible filter screen is provided with a hook, the outer side of the top of the cooling water pool is provided with an inspection corridor, and a metal fixing part is arranged on the ground corresponding to the hook.

[0021] Beneficial effects: the flexible filter screen in the application is connected with a rotating shaft at one end, connected with a metal fixing part through a hook at the other end, guided and limited through guide grooves at both sides, and provided with a protective frame with reinforcing ribs at the rear part, the above settings can realize the limiting and fixing of the flexible filter screen, so as to avoid displacement or damage of the flexible filter screen due to strong wind weather and the like; meanwhile, the application provides an installation position for the metal fixing part through the setting of the inspection corridor, and facilitates subsequent inspection and maintenance.

[0022] The application also claims a dustproof method of the adjustable dustproof device of the open circulating water cooling tower, which comprises the following steps:

[0023] Step 1: system circulating water enters the circulating water cooling tower body through the circulating water spraying pipeline, the circulating water enters the filler layer under the action of gravity, the filler layer increases the resistance and contact area of the circulating water for cooling, the hot steam water mist in the circulating water rises into the water collector, the water collector collects the water in the gas, and the gas after water collection is discharged under the action of the fan of the motor; the circulating water passing through the filler layer continuously descends, passes through the water falling layer and enters the cooling water pool, and the cooled circulating water in the cooling water pool enters the system heat exchange device through the first circulating water pump;

[0024] Step 2: when the circulating water cooling tower body normally operates, the air outside the water falling layer enters the inside of the water falling layer through the protective frame, exchanges heat with the circulating water and rises, and is discharged under the action of the fan of the motor;

[0025] Step 3: when there are willow catkins, the lifting motor in the corresponding power part of the outer filter part is started, the lifting motor drives the rotating shaft to rotate forward through the main shaft, the rotating shaft drives the corresponding first stainless steel filter screen to expand when rotating, the first stainless steel filter screen moves to the direction of the inspection corridor through the corresponding guide groove, and finally the hook at the other end of the first stainless steel filter screen is hung on the corresponding metal fixing part;

[0026] Step 4: when there are no willow catkins, the pump is started, the circulating water in the cooling water pool is sent to the spray head after being pressurized by the pump, the circulating water sprayed by the spray head washes the first stainless steel filter screen, the hook at the other end of the first stainless steel filter screen is separated from the corresponding metal fixing part after washing, the lifting motor in the corresponding power part of the outer filter part is started, the lifting motor drives the rotating shaft to rotate reversely through the main shaft, the rotating shaft drives the corresponding first stainless steel filter screen to be retracted when rotating, and the first stainless steel filter screen moves to the direction of the rotating shaft through the corresponding guide groove;

[0027] Step 5: When in sand weather, select the appropriate middle filter and / or inner filter by the air volume of the air volume measuring instrument, start the lifting motor in the power part, the lifting motor drives the rotating shaft to rotate forward through the main shaft, and the rotating shaft drives the second stainless steel filter screen and / or dust suppression filter screen to expand when rotating, and the second stainless steel filter screen and / or dust suppression filter screen moves to the direction of the inspection corridor through the corresponding guide groove, and finally the other end of the second stainless steel filter screen and / or dust suppression filter screen is connected with the corresponding metal fixing piece respectively, that is, the air volume of the air volume measuring instrument refers to the air volume of the filter screen in the middle filter and / or inner filter when the filter screen is filtered, and the air volume meets the normal operation of the circulating water cooling tower body;

[0028] Step 6: When the sand weather ends, the corresponding filter screen is retracted after the filter screen is cleaned by the spray head, and the process is completed.

[0029] When the dust suppression filter screen is used alone, the pump is started, and the circulating water in the cooling water pool is sent to the spray head after being pressurized by the pump, the circulating water sprayed by the spray head is used to wash the dust suppression filter screen, the hook at the other end of the dust suppression filter screen is separated from the corresponding metal fixing piece after washing, the lifting motor in the corresponding power part of the inner filter part is started, the lifting motor drives the rotating shaft to rotate reversely through the main shaft, the rotating shaft drives the corresponding dust suppression filter screen to retract when rotating, and the dust suppression filter screen moves to the direction of the rotating shaft through the corresponding guide groove.

[0030] When the second stainless steel filter screen is used alone, the pump is started, and the circulating water in the cooling water pool is sent to the spray head after being pressurized by the pump, the circulating water sprayed by the spray head is used to wash the second stainless steel filter screen, the hook at the other end of the second stainless steel filter screen is separated from the corresponding metal fixing piece after washing, the lifting motor in the corresponding power part of the middle filter part is started, the lifting motor drives the rotating shaft to rotate reversely through the main shaft, the rotating shaft drives the corresponding second stainless steel filter screen to retract when rotating, and the second stainless steel filter screen moves to the direction of the rotating shaft through the corresponding guide groove.

[0031] When the dust suppression filter screen and the second stainless steel filter screen are used simultaneously, first, the pump is started, the circulating water in the cooling pool is pressurized by the pump and sent to the spray head, the circulating water sprayed by the spray head is used to wash the dust suppression filter screen, after washing, the hook at the other end of the dust suppression filter screen is separated from the corresponding metal fixing part, the lifting motor in the corresponding power part of the inner filter part is started, the lifting motor drives the rotating shaft through the main shaft to rotate reversely, when the rotating shaft rotates, the corresponding dust suppression filter screen is retracted, and the dust suppression filter screen moves to the direction of the rotating shaft through the corresponding guide groove; the pump is started again, the circulating water in the cooling pool is pressurized by the pump and sent to the spray head, the circulating water sprayed by the spray head is used to wash the second stainless steel filter screen, after washing, the hook at the other end of the second stainless steel filter screen is separated from the corresponding metal fixing part, the lifting motor in the corresponding power part of the middle filter part is started, the lifting motor drives the rotating shaft through the main shaft to rotate reversely, when the rotating shaft rotates, the corresponding second stainless steel filter screen is retracted, and the second stainless steel filter screen moves to the direction of the rotating shaft through the corresponding guide groove.

[0032] Step 7: During the operation of step 3 or step 5, the air volume measuring instrument detects the air volume entering the falling water layer from outside, when the air volume of the air volume measuring instrument is less than a predetermined threshold value, the pump is started, the circulating water in the cooling pool is pressurized by the pump and sent to the spray head, and the circulating water sprayed by the spray head is used to wash the filter screen.

[0033] The dust prevention method of the application includes filtering large impurities and small impurities in the air to prevent them from entering the circulating water cooling tower body, so as to achieve the purpose of active filtration; the large impurities are represented by willow catkins, and the small impurities are represented by dust smaller than willow catkins, so as to prevent the impurities from entering the circulating water cooling tower body to pollute the circulating water and cause defects affecting the service life of the pump and the heat exchange effect of the heat exchange equipment; in use, the rotating shaft, the metal fixing part and the guide groove are used to fix the filter screen, and a protective frame with reinforcing ribs is arranged at the rear of the filter screen to prevent the flexible filter screen from being damaged in strong wind weather; in the method of the application, the data of the air volume measuring instrument is used as a reference to ensure the stable operation of the circulating water cooling tower body and the selection of the filter screen, and the data of the air volume measuring instrument can be adjusted in time when it changes (for example, when the air volume decreases, the filter holes in the filter screen are cleaned by the spray head to ensure the normal air volume); the filter screen is cleaned by the spray head to reduce the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 Fig. 1 is a structural schematic diagram of the present application.

[0036] Figure 2 Fig. 2 is a schematic diagram of the position relation of the protective frame and the dustproof unit of the present application.

[0037] Figure 3 Fig. 3 is a structural schematic diagram of the protective frame of the present application.

[0038] Figure 4 Fig. 4 is a structural schematic diagram of the dustproof unit of the present application.

[0039] Figure 5 Fig. 5 is a partial enlarged view of part A in Fig. 1. Figure 4 Fig. 6 is a partial enlarged view of part B in Fig. 1.

[0040]

[0041] 1, circulating water cooling tower body; 2, fan; 3, water collector; 4, circulating water spray pipeline; 5, filler layer; 6, cooling water pool; 7, water falling layer; 8, protective frame; 9, reinforcing rib; 10, spray head; 11, pump; 12, lifting motor; 13, rotating shaft; 14, guide groove; 15, first stainless steel filter screen; 16, second stainless steel filter screen; 17, dust suppression filter screen; 18, air volume measuring instrument; 19, hook; 20, inspection corridor; 21, metal fixing part; 22, first circulating water pump; 23, system heat exchange device; 24, second circulating water pump. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described clearly and completely below in connection with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] Reference Figure 1 ​The application discloses an adjustable dustproof device and method for an open circulating water cooling tower, which comprises a circulating water cooling tower body 1, a fan 2 with a motor arranged at a gas outlet at the top of the circulating water cooling tower body 1, a water collector 3 arranged at the upper part of the circulating water cooling tower body 1 and used for collecting water in gas, a circulating water spraying pipeline 4 and a filler layer 5 arranged at the lower part of the water collector 3 in sequence, and a cooling water pool 6 arranged at the bottom of the circulating water cooling tower body 1. Figure 1 It can be known that the protection frame 8 is arranged at the outer side of the falling water layer 7, the protection frame 8 can realize the purpose of conveniently installing the dustproof unit, the dustproof unit in the application is a liftable type, so as to meet the requirement of the circulating water cooling tower body 1 for external air, and the liftable dustproof unit in the application refers to a liftable filtering part connected with a power part.

[0044] Further, referring to Figure 2 , Figure 3 and Figure 4The bottom of the protection frame 8 is connected with the outer wall of the cooling pool 6, the top of the protection frame 8 is connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the inside of the protection frame 8 is provided with the reinforcing rib 9, the reinforcing rib 9 is provided with the nozzle 10 matched with the filter part, the nozzle 10 is connected with the inside of the cooling pool 6 through the pump 11. The circulating cooling water in the cooling pool 6 is used as the cleaning water of the filter screen, the filter screen is cleaned through the nozzle 10 after being pressurized by the pump 11, the cleaning includes the cleaning when the filter screen is collected and the cleaning when the filter screen is blocked, so that the circulating water cooling tower body 1 can meet the demand of the outside air and the labor intensity is reduced; the protection frame 8 is connected with the outer wall of the cooling pool 6 and the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, so that the protection frame 8 can be firmly fixed, the structure of the protection frame 8 is more firm and reliable through the reinforcing rib 9, and the installation of the nozzle 10 and the air volume measuring instrument 18 is facilitated, the reinforcing rib 9 is provided with the air volume measuring instrument 18; the air volume measuring instrument 18 can provide data support for the amount of the outside air entering the circulating water cooling tower body 1, so that the selection of the filter screen and the cleaning time of the filter screen by the cleaning water are provided with data support, so that the circulating water cooling tower body 1 can be stably operated for a long time; the dustproof unit includes three power parts, each power part is connected with the corresponding filter part; the power part corresponding to the inside filter part is arranged at the lower part of the other two power parts, the power part corresponding to the middle filter part is arranged between the other two power parts, and the power part corresponding to the outside filter part is arranged at the upper part of the other two power parts. Through the combination of the three power parts and the three filter parts, the filter part can be selected according to the size of impurities, so that the demand of the circulating water cooling tower body 1 for the air amount is met. The power part includes the lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the main shaft of the lifting motor 12 is connected with the rotating shaft 13 arranged at the top outside of the protection frame 8, and one end of the flexible filter screen in the filter part is connected with the rotating shaft 13. The filter part includes the flexible filter screen, the two sides of the flexible filter screen are movably arranged in the inside of the guide groove 14; the guide groove 14 is divided into the upper guide groove and the lower guide groove, the upper guide groove is arranged downwardly and obliquely, the lower guide groove is vertically extended downwardly, and the upper guide groove and the lower guide groove are integrated.The above-mentioned setting provides power support and guidance for the lifting of the flexible filter screen, and allows the lifting motor 12 to be conveniently set on the same horizontal plane; as mentioned above, the water drop layer of the circulating water cooling tower body 1 can be in the form of no buildings on all sides, or it can be a structure with no buildings on the corresponding two sides; when the water drop layer of the circulating water cooling tower body 1 is in the form of no buildings on all sides, the combination of the protective frame 8 and the dustproof unit of the present invention is several, which wrap around the water drop layer; while when the water drop layer of the circulating water cooling tower body 1 is a structure with no buildings on the corresponding two sides, such as Figure 4 As shown, the lifting motor 12 can be installed on the end of the side wall of the circulating water cooling tower body 1 corresponding to the packing layer 5; the lifting motor 12 is connected to the rotating shaft 13 installed on the outer side of the top of the protective frame 8 through the main shaft, and the rotating shaft 13 can be connected to the protective frame 8 through the bearing seat with bearing (not shown in the figure). The above structure can ensure that the rotating shaft 13 and the lifting motor 12 are both securely connected; the flexible filter screen described in this invention can be provided with sliders (not shown in the figure) on both sides. The sliders are movably locked inside the guide groove 14, which not only play a sliding role, but also realize the positioning of the flexible filter screen, avoiding the problem that the side of the flexible filter screen will slide out of the guide groove 14 in windy weather;

[0045] Furthermore, referring to Figure 2 , Figure 4 and Figure 5 This invention includes a protective frame 8 with reinforcing ribs. A rotating shaft 13 is connected to one end of a flexible filter screen in the filtration section. The other end of the flexible filter screen has a hook 19. Both sides of the flexible filter screen are movably disposed inside the guide groove 14. An inspection corridor 20 is provided on the outer side of the top of the cooling water tank 6. Metal fasteners 21 are installed on the ground corresponding to the hooks 19 and the inspection corridor 20. This structural form ensures that the two ends, sides, and rear of the flexible filter screen are fixed or limited. The flexible filter screen is affected by weather factors and the negative pressure inside the circulating water cooling tower body 1. The aforementioned fixing or limiting can maximize the protection of the flexible filter screen and prevent displacement and damage, thereby improving the service life of the flexible filter screen. Simultaneously, the inspection corridor 20 facilitates inspection and maintenance and provides a foundation for the installation of the metal fasteners 21.

[0046] Furthermore, referring to Figure 4The flexible filter in the inner filtration section is a dust suppression filter 17, the flexible filter in the middle filtration section is a second stainless steel filter 16, and the flexible filter in the outer filtration section is a first stainless steel filter 15 for filtering willow catkins. The pore size of the dust suppression filter 17 is 150-180 micrometers, the pore size of the second stainless steel filter 16 is 300 micrometers, and the pore size of the first stainless steel filter 15 is 0.85 millimeters. The filter screen described in this invention is mainly used to filter impurities in the air. Its arrangement is based on the following principle: the outer filter screen has a large pore size, the middle filter screen has a moderate pore size, and the inner filter screen has a small pore size. The selection of the filter screen aims to ensure effective filtration of impurities while maintaining the airflow into the circulating water cooling tower body 1 and achieving normal operation of the circulating water cooling tower body 1. In actual working conditions, there are many types of impurities, which cannot be exhaustively listed in this invention. Therefore, common poplar and willow catkins and dust are used as references; that is, impurities larger than or equal to poplar and willow catkins are considered as poplar and willow catkins. The primary method is through the first... Stainless steel filter screen 15 is used for filtration; for debris smaller than willow catkins, taking sand and dust as an example, it is mainly filtered by the second stainless steel filter screen 16 and the dust suppression filter screen 17. When ensuring that the debris does not enter the circulating water cooling tower body 1, it is preferable to use a filter screen with a larger pore size to ensure the airflow entering the circulating water cooling tower body 1; based on the influence of wind force and the size of sand and dust particles in the air, a double-layer filtration form of second stainless steel filter screen 16, dust suppression filter screen 17, and second stainless steel filter screen 16 and dust suppression filter screen 17 can be selected in sequence to ensure that sand and dust and other debris are prevented from entering the circulating water cooling tower body 1 as much as possible.

[0047] A dust prevention method for an adjustable dust prevention device in an open-type circulating water cooling tower, the dust prevention method comprising the following steps:

[0048] Step 1: The system circulating water enters the circulating water cooling tower body 1 through the circulating water spray pipe 4. Under the action of gravity, the circulating water enters the packing layer 5. The packing layer 5 increases the resistance and contact area of ​​the circulating water to cool it down. The hot steam mist in the circulating water rises and enters the water collector 3. The water collector 3 collects the moisture entrained in the gas. The gas after water collection is discharged by the fan 2 with motor. The circulating water passing through the packing layer 5 continues to flow downward, passes through the water drop layer 7 and enters the cooling water pool 6. The circulating water cooled in the cooling water pool 6 enters the system heat exchange device 23 through the first circulating water pump 22.

[0049] Step 2: When the circulating water cooling tower body 1 is running normally, the air outside the water drop layer 7 passes through the protective frame 8 and enters the interior of the water drop layer 7 to exchange heat with the circulating water. After rising, it is discharged to the outside by the action of the fan 2 with motor.

[0050] Step 3: When there are willows, the corresponding power part of the outer filter part is opened, the lifting motor 12 drives the rotating shaft 13 to rotate in the positive direction, and the rotating shaft 13 drives the corresponding first stainless steel filter screen 15 to expand. The first stainless steel filter screen 15 moves to the direction of the patrol corridor 20 through the corresponding guide slot 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 part 21;

[0051] Step 4: When there are no willows, the pump 11 is opened, the circulating water in the cooling water pool 6 is pressurized by the pump 11 and sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the first stainless steel filter screen 15, the hook 19 at the other end of the first stainless steel filter screen 15 is separated from the corresponding metal fixing part 21, the corresponding power part of the outer filter part is opened, the lifting motor 12 drives the rotating shaft 13 to rotate in the reverse direction, and the rotating shaft 13 drives the corresponding first stainless steel filter screen 15 to retract. The first stainless steel filter screen 15 moves to the direction of the rotating shaft 13 through the corresponding guide slot 14;

[0052] Step 5: When it is a sand and dust weather, the wind volume of the wind volume measuring instrument 18 is used to select the middle filter part and / or the inner filter part, the lifting motor 12 in the power part is opened, the lifting motor 12 drives the rotating shaft 13 to rotate in the positive direction, and the rotating shaft 13 drives the second stainless steel filter screen 16 and / or the dust suppression filter screen 17 to expand. The second stainless steel filter screen 16 and / or the dust suppression filter screen 17 move to the direction of the patrol corridor 20 through the corresponding guide slot 14, and finally the other end of the second stainless steel filter screen 16 and / or the dust suppression filter screen 17 is connected with the corresponding metal fixing part 21 respectively, that is, the wind volume of the wind volume measuring instrument 18 refers to the wind volume that meets the normal operation of the circulating water cooling tower body 1 when the filter screen in the middle filter part and / or the inner filter part is filtered;

[0053] Step 6: When the sand and dust weather ends, the corresponding filter screen is retracted after being cleaned by the spray head 10, and the operation is completed;

[0054] When the dust suppression filter screen 17 is used alone, the pump 11 is opened, the circulating water in the cooling water pool 6 is pressurized by the pump 11 and sent to the spray head 10, the circulating water sprayed by the spray head 10 washes the dust suppression filter screen 17, the hook 19 at the other end of the dust suppression filter screen 17 is separated from the corresponding metal fixing part 21, the lifting motor 12 in the corresponding power part of the inner filter part is opened, the lifting motor 12 drives the rotating shaft 13 to rotate in the reverse direction, and the rotating shaft 13 drives the corresponding dust suppression filter screen 17 to retract. The dust suppression filter screen 17 moves to the direction of the rotating shaft 13 through the corresponding guide slot 14;

[0055] When the second stainless steel filter screen 16 is used alone, the pump 11 is turned on, and the circulating water in the cooling water pool 6 is sent to the spray head 10 through the pump 11, and the circulating water sprayed by the spray head 10 is used to wash the second stainless steel filter screen 16, and then the hook 19 at the other end of the second stainless steel filter screen 16 is separated from the corresponding metal fixing part 21, the lifting motor 12 in the corresponding power part of the middle filter part is turned on, the lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft, and the corresponding second stainless steel filter screen 16 is retracted when the rotating shaft 13 rotates, and the second stainless steel filter screen 16 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14;

[0056] When the dust suppression filter screen 17 and the second stainless steel filter screen 16 are used simultaneously, the pump 11 is first turned on, and the circulating water in the cooling water pool 6 is sent to the spray head 10 through the pump 11, and the circulating water sprayed by the spray head 10 is used to wash the dust suppression filter screen 17, and then the hook 19 at the other end of the dust suppression filter screen 17 is separated from the corresponding metal fixing part 21, the lifting motor 12 in the corresponding power part of the inner filter part is turned on, the lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft, and the corresponding dust suppression filter screen 17 is retracted when the rotating shaft 13 rotates, and the dust suppression filter screen 17 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14; the pump 11 is turned on again, and the circulating water in the cooling water pool 6 is sent to the spray head 10 through the pump 11, and the circulating water sprayed by the spray head 10 is used to wash the second stainless steel filter screen 16, and then the hook 19 at the other end of the second stainless steel filter screen 16 is separated from the corresponding metal fixing part 21, the lifting motor 12 in the corresponding power part of the middle filter part is turned on, the lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft, and the corresponding second stainless steel filter screen 16 is retracted when the rotating shaft 13 rotates, and the second stainless steel filter screen 16 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14;

[0057] Step 7: In the running process of step 3 or step 5, the air volume measuring instrument 18 detects the air volume entering the falling water layer 7 from the outside, and when the air volume of the air volume measuring instrument 18 is less than a predetermined threshold value, the pump 11 is turned on, and the circulating water in the cooling water pool 6 is sent to the spray head 10 through the pump 11, and the circulating water sprayed by the spray head 10 is used to wash the filter screen.

[0058] In order to explain the application in more detail, the application will be further described in combination with the embodiments. The specific embodiments are as follows:

[0059] Embodiment 1

[0060] The adjustable dustproof device of the open circulating water cooling tower comprises a circulating water cooling tower body 1, a fan 2 with a motor arranged at a gas outlet of the top of the circulating water cooling tower body 1, a water collector 3 for collecting water in gas arranged at the upper part of the circulating water cooling tower body 1, a circulating water spraying pipeline 4 and a filler layer 5 arranged at the lower part of the water collector 3 in sequence, a cooling water pool 6 arranged at the bottom of the circulating water cooling tower body 1, a falling water layer 7 for introducing external air to heat-exchange with the circulating water arranged between the filler layer 5 and the cooling water pool 6, a protective frame 8 for supporting the dustproof unit arranged at the outer side of the falling water layer 7, and a dustproof unit arranged at the outer side of the protective frame 8 and capable of being lifted; the dustproof unit comprises a power unit arranged at the top of the protective frame 8 and connected with a filter unit capable of being lifted. The bottom of the protective frame 8 is connected with the outer wall of the cooling water pool 6, the top of the protective frame 8 is connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the inside of the protective frame 8 is provided with a reinforcing rib 9, the reinforcing rib 9 is provided with a spray head 10 matched with the filter unit, the spray head 10 is connected with the inside of the cooling water pool 6 through a pump 11. The power unit comprises a lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, a main shaft of the lifting motor 12 is connected with a rotating shaft 13 arranged at the outer side of the top of the protective frame 8, and the rotating shaft 13 is connected with one end of a flexible filter screen in the filter unit. The filter unit comprises the flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of a 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 in a downward inclination, the lower guide groove is vertically extended downward, and the upper guide groove and the lower guide groove are of an integrated structure. The reinforcing rib 9 is provided with an air volume measuring instrument 18. The other end of the flexible filter screen is provided with a hook 19, an inspection corridor 20 is arranged at the outer side of the top of the cooling water pool 6, and a metal fixing part 21 is arranged on the ground corresponding to the hook 19.

[0061] A dustproof method of the adjustable dustproof device of the open circulating water cooling tower, which comprises the following steps:

[0062] Step 1: system circulating water enters the circulating water cooling tower body 1 through the circulating water spraying pipeline 4, the circulating water enters the filler layer 5 under the action of gravity, the filler layer 5 increases the resistance and contact area of the circulating water to cool, the hot steam water mist in the circulating water rises into the water collector 3, the water collector 3 collects the water in the gas, and the collected gas is discharged under the action of the fan 2 with a motor; the circulating water passing through the filler layer 5 continuously descends, passes through the falling water layer 7 and enters the cooling water pool 6, and the cooled circulating water in the cooling water pool 6 enters the system heat-exchange device 23 through the first circulating water pump 22.

[0063] Step 2: when the circulating water cooling tower body 1 normally operates, the air outside the falling water layer 7 enters the inside of the falling water layer 7 through the protective frame 8, exchanges heat with the circulating water, rises upward and is discharged under the action of the fan 2 with a motor;

[0064] Step 3: When there are willow catkins, the corresponding power part of the outer filter part opens the lifting motor 12, the lifting motor 12 drives the rotating shaft 13 to rotate in the positive direction through the main shaft, and the rotating shaft 13 drives the corresponding first stainless steel filter screen 15 to expand when rotating, and the first stainless steel filter screen 15 moves to 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 part 21.

[0065] Step 4: When there are no willow catkins, the pump 11 is opened, the circulating water in the cool water pool 6 is sent to the spray head 10 after being pressurized by the pump 11, the circulating water sprayed by the spray head 10 washes the first stainless steel filter screen 15, the hook 19 at the other end of the first stainless steel filter screen 15 is separated from the corresponding metal fixing part 21 after washing, the corresponding power part of the outer filter part opens the lifting motor 12, the lifting motor 12 drives the rotating shaft 13 to rotate in the reverse direction through the main shaft, and the rotating shaft 13 drives the corresponding first stainless steel filter screen 15 to retract when rotating, and the first stainless steel filter screen 15 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14.

[0066] Step 5: In the running process of step 3, the air volume measuring instrument 18 detects the air volume entering the falling water layer 7 from the outside, and when the air volume of the air volume measuring instrument 18 is less than the predetermined threshold value, the pump 11 is opened, the circulating water in the cool water pool 6 is sent to the spray head 10 after being pressurized by the pump 11, and the circulating water sprayed by the spray head 10 washes the filter screen.

[0067] Example 2

[0068] The adjustable dustproof device of the open circulating water cooling tower comprises a circulating water cooling tower body 1, a fan 2 with a motor is arranged at the gas outlet of the top of the circulating water cooling tower body 1, a water collector 3 for collecting water in the gas is arranged at the upper part of the circulating water cooling tower body 1, a circulating water spraying pipeline 4 and a filler layer 5 are sequentially arranged at the lower part of the water collector 3, a cooling water pool 6 is arranged at the bottom of the circulating water cooling tower body 1, a falling water layer 7 for introducing external air to exchange heat with the circulating water is arranged between the filler layer 5 and the cooling water pool 6, a protective frame 8 for supporting the dustproof unit is arranged at the outer side of the falling water layer 7, and the outer side of the protective frame 8 is provided with the liftable dustproof unit; the dustproof unit comprises at least one power unit arranged at the top of the protective frame 8, and the power unit is connected with a liftable filtering unit. The bottom of the protective frame 8 is connected with the outer wall of the cooling water pool 6, the top of the protective frame 8 is connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the inside of the protective frame 8 is provided with a reinforcing rib 9, the reinforcing rib 9 is provided with a spray head 10 matched with the filtering unit, the spray head 10 is connected with the inside of the cooling water pool 6 through a pump 11. The dustproof unit comprises three power units, each power unit is connected with a corresponding filtering unit; the power unit corresponding to the inner filtering unit is arranged at the lower part of the other two power units, the power unit corresponding to the middle filtering unit is arranged between the other two power units, and the power unit corresponding to the outer filtering unit is arranged at the upper part of the other two power units. The power unit comprises a lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the main shaft of the lifting motor 12 is connected with a rotating shaft 13 arranged at the outer side of the top of the protective frame 8, and one end of the flexible filter screen in the filtering unit is connected with the rotating shaft 13. The filtering unit comprises a flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of a 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 in a downward inclination, the lower guide groove is vertically extended downward, and the upper guide groove and the lower guide groove are of an integrated structure. The flexible filter screen in the inner filtering unit is a dust suppression filter screen 17, the flexible filter screen in the middle filtering unit is a second stainless steel filter screen 16, and the flexible filter screen in the outer filtering unit is a first stainless steel filter screen 15 for filtering willow catkins. The pore size of the dust suppression filter screen 17 is 150-180 microns, the pore size of the second stainless steel filter screen 16 is 300 microns, and the pore size of the first stainless steel filter screen 15 is 0.85 millimeters. The reinforcing rib 9 is provided with an air volume measuring instrument 18. The other end of the flexible filter screen is provided with a hook 19, the outer side of the top of the cooling water pool 6 is provided with a patrol corridor 20, and a metal fixing part 21 is arranged on the ground corresponding to the hook 19.

[0069] The dustproof method of the adjustable dustproof device of the open circulating water cooling tower comprises the following steps:

[0070] Step 1: The system circulating water enters the circulating water cooling tower body 1 through the circulating water spray pipeline 4, and the circulating water enters the filler layer 5 under the action of gravity. The filler layer 5 increases the resistance and contact area of the circulating water for cooling. The hot steam water mist in the circulating water rises into the water collector 3, and the water collector 3 collects the water carried in the gas. The gas after water collection is discharged under the action of the fan 2 of the motor. The circulating water passing through the filler layer 5 continuously descends, passes through the water falling layer 7, and enters the cooling water pool 6. The cooled circulating water in the cooling water pool 6 enters the system heat exchange device 23 through the first circulating water pump 22.

[0071] Step 2: When the circulating water cooling tower body 1 is normally operated, the air outside the water falling layer 7 enters the inside of the water falling layer 7 through the protection frame 8, exchanges heat with the circulating water, and then rises and is discharged under the action of the fan 2 of the motor.

[0072] Step 3: When it is in a sand-dust weather, the wind volume of the wind volume measuring instrument 18 is used to select the suitable middle filtering part. The lifting motor 12 in the power part is started. The lifting motor 12 drives the rotating shaft 13 to rotate forward through the main shaft. When the rotating shaft 13 rotates, the second stainless steel filter screen 16 is unfolded. The second stainless steel filter screen 16 moves to the direction of the inspection corridor 20 through the corresponding guide groove 14, and finally the other end of the second stainless steel filter screen 16 is connected with the corresponding metal fixing part 21 respectively. The wind volume of the wind volume measuring instrument 18 refers to the wind volume that meets the normal operation of the circulating water cooling tower body 1 when the filter screen in the middle filtering part filters.

[0073] Step 4: When the sand-dust weather ends, the pump 11 is started. The circulating water in the cooling water pool 6 is pressurized by the pump 11 and then 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 part 21. The lifting motor 12 in the power part corresponding to the middle filtering part is started. The lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft. When the rotating shaft 13 rotates, the corresponding second stainless steel filter screen 16 is folded. The second stainless steel filter screen 16 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14.

[0074] Step 5: In the operation process of step 3, the wind volume measuring instrument 18 detects the wind volume entering the water falling layer 7 from outside. When the wind volume of the wind volume measuring instrument 18 is less than a predetermined threshold value, the pump 11 is started. The circulating water in the cooling water pool 6 is pressurized by the pump 11 and then sent to the spray head 10. The circulating water sprayed by the spray head 10 washes the filter screen.

[0075] Example 3

[0076] The adjustable dustproof device of the open circulating water cooling tower comprises a circulating water cooling tower body 1, a fan 2 with a motor is arranged at the gas outlet of the top of the circulating water cooling tower body 1, a water collector 3 for collecting water in the gas is arranged at the upper part of the circulating water cooling tower body 1, a circulating water spraying pipeline 4 and a filler layer 5 are sequentially arranged at the lower part of the water collector 3, a cooling water pool 6 is arranged at the bottom of the circulating water cooling tower body 1, a falling water layer 7 for introducing external air to exchange heat with the circulating water is arranged between the filler layer 5 and the cooling water pool 6, a protective frame 8 for supporting the dustproof unit is arranged at the outer side of the falling water layer 7, and the outer side of the protective frame 8 is provided with the liftable dustproof unit; the dustproof unit comprises at least one power unit arranged at the top of the protective frame 8, and the power unit is connected with a liftable filtering unit. The bottom of the protective frame 8 is connected with the outer wall of the cooling water pool 6, the top of the protective frame 8 is connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the inside of the protective frame 8 is provided with a reinforcing rib 9, the reinforcing rib 9 is provided with a spray head 10 matched with the filtering unit, the spray head 10 is connected with the inside of the cooling water pool 6 through a pump 11. The dustproof unit comprises three power units, each power unit is connected with a corresponding filtering unit; the power unit corresponding to the inner filtering unit is arranged at the lower part of the other two power units, the power unit corresponding to the middle filtering unit is arranged between the other two power units, and the power unit corresponding to the outer filtering unit is arranged at the upper part of the other two power units. The power unit comprises a lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the main shaft of the lifting motor 12 is connected with a rotating shaft 13 arranged at the outer side of the top of the protective frame 8, and one end of the rotating shaft 13 is connected with a flexible filter screen in the filtering unit. The filtering unit comprises a flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of a 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 in a downward inclination, the lower guide groove is vertically extended downward, and the upper guide groove and the lower guide groove are of an integrated structure. The flexible filter screen in the inner filtering unit is a dust suppression filter screen 17, the flexible filter screen in the middle filtering unit is a second stainless steel filter screen 16, and the flexible filter screen in the outer filtering unit is a first stainless steel filter screen 15 for filtering willow catkins. The pore size of the dust suppression filter screen 17 is 150-180 microns, the pore size of the second stainless steel filter screen 16 is 300 microns, and the pore size of the first stainless steel filter screen 15 is 0.85 millimeters. The reinforcing rib 9 is provided with an air volume measuring instrument 18. The other end of the flexible filter screen is provided with a hook 19, the outer side of the top of the cooling water pool 6 is provided with a patrol corridor 20, and a metal fixing piece 21 is arranged on the ground corresponding to the hook 19.

[0077] The dustproof method of the adjustable dustproof device of the open circulating water cooling tower comprises the following steps:

[0078] Step 1: The system circulating water enters the circulating water cooling tower body 1 through the circulating water spray pipeline 4, and the circulating water enters the filler layer 5 under the action of gravity. The filler layer 5 increases the resistance and contact area of the circulating water for cooling. The hot steam water mist in the circulating water rises into the water collector 3, and the water collector 3 collects the water carried in the gas. The gas after water collection is discharged under the action of the fan 2 of the motor. The circulating water passing through the filler layer 5 continuously descends, passes through the water falling layer 7, and enters the cooling water pool 6. The cooled circulating water in the cooling water pool 6 enters the system heat exchange device 23 through the first circulating water pump 22.

[0079] Step 2: When the circulating water cooling tower body 1 is normally operated, the air outside the water falling layer 7 enters the inside of the water falling layer 7 through the protective frame 8, exchanges heat with the circulating water, and then rises and is discharged under the action of the fan 2 of the motor.

[0080] Step 3: When it is a sand-dust weather, the wind volume of the wind volume measuring instrument 18 is used to select the inside filtering part. The lifting motor 12 in the power part is started. The lifting motor 12 drives the rotating shaft 13 to rotate forward through the main shaft. When the rotating shaft 13 rotates, the dust suppression filter screen 17 is unfolded. The dust suppression filter screen 17 moves to the direction of the inspection corridor 20 through the corresponding guide groove 14, and finally the other end of the dust suppression filter screen 17 is connected with the corresponding metal fixing part 21 respectively. The wind volume of the wind volume measuring instrument 18 refers to the wind volume that meets the normal operation of the circulating water cooling tower body 1 when the filter screen in the inside filtering part is filtered.

[0081] Step 4: When the sand-dust weather ends, the pump 11 is started. The circulating water in the cooling water pool 6 is sent to the spray head 10 after being pressurized by the pump 11. 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 part 21. The lifting motor 12 in the power part corresponding to the inside filtering part is started. The lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft. When the rotating shaft 13 rotates, the corresponding dust suppression filter screen 17 is folded. The dust suppression filter screen 17 moves to the direction of the rotating shaft 13 through the corresponding guide groove 14.

[0082] Step 5: In the operation process of step 3, the wind volume measuring instrument 18 detects the wind volume entering the water falling layer 7 from outside. When the wind volume of the wind volume measuring instrument 18 is less than the predetermined threshold value, the pump 11 is started. The circulating water in the cooling water pool 6 is sent to the spray head 10 after being pressurized by the pump 11. The circulating water sprayed by the spray head 10 washes the filter screen.

[0083] Example 4

[0084] The adjustable dustproof device of the open circulating water cooling tower comprises a circulating water cooling tower body 1, a fan 2 with a motor is arranged at the gas outlet of the top of the circulating water cooling tower body 1, a water collector 3 for collecting water in the gas is arranged at the upper part of the circulating water cooling tower body 1, a circulating water spraying pipeline 4 and a filler layer 5 are sequentially arranged at the lower part of the water collector 3, a cooling water pool 6 is arranged at the bottom of the circulating water cooling tower body 1, a falling water layer 7 for introducing external air to exchange heat with the circulating water is arranged between the filler layer 5 and the cooling water pool 6, a protective frame 8 for supporting the dustproof unit is arranged at the outer side of the falling water layer 7, and the outer side of the protective frame 8 is provided with the liftable dustproof unit; the dustproof unit comprises at least one power unit arranged at the top of the protective frame 8, and the power unit is connected with a liftable filtering unit. The bottom of the protective frame 8 is connected with the outer wall of the cooling water pool 6, the top of the protective frame 8 is connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the inside of the protective frame 8 is provided with a reinforcing rib 9, the reinforcing rib 9 is provided with a spray head 10 matched with the filtering unit, the spray head 10 is connected with the inside of the cooling water pool 6 through a pump 11. The dustproof unit comprises three power units, each power unit is connected with a corresponding filtering unit; the power unit corresponding to the inner filtering unit is arranged at the lower part of the other two power units, the power unit corresponding to the middle filtering unit is arranged between the other two power units, and the power unit corresponding to the outer filtering unit is arranged at the upper part of the other two power units. The power unit comprises a lifting motor 12 connected with the outer wall of the circulating water cooling tower body 1 corresponding to the filler layer 5, the main shaft of the lifting motor 12 is connected with a rotating shaft 13 arranged at the outer side of the top of the protective frame 8, and one end of the flexible filter screen in the filtering unit is connected with the rotating shaft 13. The filtering unit comprises a flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of a 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 in a downward inclination, the lower guide groove is vertically extended downward, and the upper guide groove and the lower guide groove are of an integrated structure. The flexible filter screen in the inner filtering unit is a dust suppression filter screen 17, the flexible filter screen in the middle filtering unit is a second stainless steel filter screen 16, and the flexible filter screen in the outer filtering unit is a first stainless steel filter screen 15 for filtering willow catkins. The pore size of the dust suppression filter screen 17 is 150-180 microns, the pore size of the second stainless steel filter screen 16 is 300 microns, and the pore size of the first stainless steel filter screen 15 is 0.85 millimeters. The reinforcing rib 9 is provided with an air volume measuring instrument 18. The other end of the flexible filter screen is provided with a hook 19, the outer side of the top of the cooling water pool 6 is provided with a patrol corridor 20, and a metal fixing part 21 is arranged on the ground corresponding to the hook 19.

[0085] The dustproof method of the adjustable dustproof device of the open circulating water cooling tower comprises the following steps:

[0086] Step 1: The system circulating water enters the circulating water cooling tower body 1 through the circulating water spray pipeline 4, and the circulating water enters the filler layer 5 under the action of gravity. The filler layer 5 increases the resistance and contact area of the circulating water for cooling. The hot steam water mist in the circulating water rises into the water collector 3, and the water collector 3 collects the water carried in the gas. The gas after water collection is discharged under the action of the fan 2 of the motor. The circulating water passing through the filler layer 5 continuously descends, passes through the water falling layer 7, and enters the cooling water pool 6. The cooled circulating water in the cooling water pool 6 enters the system heat exchange device 23 through the first circulating water pump 22.

[0087] Step 2: When the circulating water cooling tower body 1 is normally operated, the air outside the water falling layer 7 enters the inside of the water falling layer 7 through the protection frame 8, exchanges heat with the circulating water, and then rises and is discharged under the action of the fan 2 of the motor.

[0088] Step 3: When it is in a sand and dust weather, the wind volume of the wind volume measuring instrument 18 is used to select the middle filter part and the inner filter part. The lifting motor 12 in the power part is started. The lifting motor 12 drives the rotating shaft 13 to rotate forward through the main shaft. When the rotating shaft 13 rotates, the second stainless steel filter screen 16 and the dust suppression filter screen 17 are unfolded. The second stainless steel filter screen 16 and the dust suppression filter screen 17 move to the direction of the inspection corridor 20 through the corresponding guide slot 14. Finally, the other end of the second stainless steel filter screen 16 and the dust suppression filter screen 17 is connected with the corresponding metal fixing part 21 respectively. The wind volume of the wind volume measuring instrument 18 refers to the wind volume that meets the normal operation of the circulating water cooling tower body 1 when the filter screens in the middle filter part and the inner filter part are filtered.

[0089] Step 4: When the sand and dust weather ends, first, the pump 11 is started. The circulating water in the cooling water pool 6 is pressurized by the pump 11 and then 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 part 21. The lifting motor 12 in the power part corresponding to the inner filter part is started. The lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft. When the rotating shaft 13 rotates, the corresponding dust suppression filter screen 17 is folded. The dust suppression filter screen 17 moves to the direction of the rotating shaft 13 through the corresponding guide slot 14. The pump 11 is started again. The circulating water in the cooling water pool 6 is pressurized by the pump 11 and then 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 part 21. The lifting motor 12 in the power part corresponding to the middle filter part is started. The lifting motor 12 drives the rotating shaft 13 to rotate reversely through the main shaft. When the rotating shaft 13 rotates, the corresponding second stainless steel filter screen 16 is folded. The second stainless steel filter screen 16 moves to the direction of the rotating shaft 13 through the corresponding guide slot 14.

[0090] Step 5: During the operation of step 3, the air volume measuring instrument 18 detects the air volume entering the drop layer 7 from outside, and when the air volume of the air volume measuring instrument 18 is less than a predetermined threshold value, the pump 11 is started, and the circulating water in the cooling pool 6 is pressurized by the pump 11 and sent to the spray head 10, and the circulating water sprayed by the spray head 10 washes the filter screen.

[0091] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable dustproof device of an open circulating water cooling tower, comprising a circulating water cooling tower body (1), a fan (2) with a motor being arranged at a gas outlet at a top of the circulating water cooling tower body (1), a water collector (3) for collecting water in gas being arranged at an upper portion in the circulating water cooling tower body (1), a circulating water spraying pipeline (4) and a filler layer (5) being arranged at a lower portion of the water collector (3) in sequence, a cooling water pool (6) being arranged at a bottom of the circulating water cooling tower body (1), and a falling water layer (7) for introducing external air to exchange heat with circulating water being arranged between the filler layer (5) and the cooling water pool (6), characterized in that: The outer side of the falling water layer (7) is provided with a protective frame (8) for supporting a dustproof unit, and the outer side of the protective frame (8) is provided with a liftable dustproof unit; ​ The dustproof unit comprises at least one power unit arranged on the top of the protective frame (8), and the power unit is connected with a liftable filter unit; The bottom of the protective frame (8) is connected with the outer wall of the cooling water pool (6), the top of the protective frame (8) is connected with the outer wall of the circulating water cooling tower body (1) corresponding to the filler layer (5), the inside of the protective frame (8) is provided with a reinforcing rib (9), the reinforcing rib (9) is provided with a spray head (10) matched with the filter unit, and the spray head (10) is connected with the inside of the cooling water pool (6) through a pump (11); The dustproof unit comprises three power units, each power unit is connected with a corresponding filter unit; the power unit corresponding to the inner filter unit is arranged below the other two power units, the power unit corresponding to the middle filter unit is arranged between the other two power units, and the power unit corresponding to the outer filter unit is arranged above the other two power units; The power unit comprises a lifting motor (12) connected with the outer wall of the circulating water cooling tower body (1) corresponding to the filler layer (5), the main shaft of the lifting motor (12) is connected with a rotating shaft (13) arranged on the top of the outer side of the protective frame (8), and one end of the flexible filter screen in the filter unit is connected with the rotating shaft (13); The filter unit comprises a flexible filter screen, and the two sides of the flexible filter screen are movably arranged in the inside of a 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 downwardly inclined, the lower guide groove is vertically extended downwardly, and the upper guide groove and the lower guide groove are of an integrated structure; The flexible filter screen in the inner filter unit is a dust suppression filter screen (17), the flexible filter screen in the middle filter unit is a second stainless steel filter screen (16), and the flexible filter screen in the outer filter unit is a first stainless steel filter screen (15) for filtering catkins.

2. An adjustable dust prevention device of an open cycle water cooling tower according to claim 1, characterized in that: The pore size of the dust suppression filter screen (17) is 150-180 microns, the pore size of the second stainless steel filter screen (16) is 300 microns, and the pore size of the first stainless steel filter screen (15) is 0.85 millimeters.

3. The adjustable dust prevention device of an open circulating water cooling tower according to claim 1, characterized in that: The reinforcing rib (9) is provided with an air volume measuring instrument (18).

4. The adjustable dust prevention device of an open circulating water cooling tower according to claim 1, characterized in that: The other end of the flexible filter screen is provided with a hook (19), the outer side of the top of the cooling water pool (6) is provided with a patrol corridor (20), and the ground corresponding to the hook (19) of the patrol corridor (20) is provided with a metal fixing piece (21).

5. A dust control method for an adjustable dust control device of an open-circulation water cooling tower, characterized by: The dustproof method comprises the following steps: Step 1: The system circulating water enters the circulating water cooling tower body (1) through the circulating water spray pipeline (4), and the circulating water enters the filler layer (5) under the action of gravity. The filler layer (5) increases the resistance and contact area of the circulating water for cooling. The hot steam water mist in the circulating water rises into the water collector (3), which collects the water carried in the gas. The gas after water collection is discharged under the action of the fan (2) of the electric machine. The circulating water passing through the filler layer (5) continuously descends, passes through the water falling layer (7) and enters the cooling water pool (6). The cooled circulating water in the cooling water pool (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) is normally operated, the air outside the water falling layer (7) enters the inside of the water falling layer (7) through the protection frame (8), exchanges heat with the circulating water, and then rises and is discharged under the action of the fan (2) of the electric machine; Step 3: When there are willow catkins, the lifting motor (12) in the power part corresponding to the outside filtering part is turned on. The lifting motor (12) drives the rotating shaft (13) to rotate forward through the main shaft. When the rotating shaft (13) rotates, the corresponding first stainless steel filter screen (15) is unfolded. The first stainless steel filter screen (15) moves to 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 part (21); Step 4: When there are no willow catkins, the pump (11) is turned on, and the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11). 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 part (21). The lifting motor (12) in the power part corresponding to the outside filtering part is turned on. The lifting motor (12) drives the rotating shaft (13) to rotate reversely through the main shaft. When the rotating shaft (13) rotates, the corresponding first stainless steel filter screen (15) is folded. The first stainless steel filter screen (15) moves to the direction of the rotating shaft (13) through the corresponding guide groove (14). Step 5: When in sand weather, the wind volume of the wind volume measuring instrument (18) is used to select the applicable middle filter part and / or inner side filter part, the lifting motor (12) in the power part is started, the lifting motor (12) drives the rotating shaft (13) to rotate forward through the main shaft, the second stainless steel filter screen (16) and / or the dust suppression filter screen (17) are unfolded when the rotating shaft (13) rotates, the second stainless steel filter screen (16) and / or the dust suppression filter screen (17) move to the direction of the patrol corridor (20) through the corresponding guide groove (14), and finally the other end of the second stainless steel filter screen (16) and / or the dust suppression filter screen (17) is connected with the corresponding metal fixing part (21) respectively; Step 6: When the sand weather ends, the corresponding filter screen is retracted after the filter screen is cleaned by the spray head (10); When the dust suppression filter screen (17) is used alone, the pump (11) is started, the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11), the circulating water sprayed by the spray head (10) is used to wash the dust suppression filter screen (17), the hook (19) at the other end of the dust suppression filter screen (17) is separated from the corresponding metal fixing part (21) after washing, the lifting motor (12) in the power part corresponding to the inner side filter part is started, the lifting motor (12) drives the rotating shaft (13) to rotate reversely through the main shaft, the corresponding dust suppression filter screen (17) is retracted when the rotating shaft (13) rotates, and the dust suppression filter screen (17) moves to the direction of the rotating shaft (13) through the corresponding guide groove (14); When the second stainless steel filter screen (16) is used alone, the pump (11) is started, the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11), the circulating water sprayed by the spray head (10) is used to wash the second stainless steel filter screen (16), the hook (19) at the other end of the second stainless steel filter screen (16) is separated from the corresponding metal fixing part (21) after washing, the lifting motor (12) in the power part corresponding to the middle filter part is started, the lifting motor (12) drives the rotating shaft (13) to rotate reversely through the main shaft, the corresponding second stainless steel filter screen (16) is retracted when the rotating shaft (13) rotates, and the second stainless steel filter screen (16) moves to the direction of the rotating 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, first, the pump (11) is started, and the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11), 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 part (21), the lifting motor (12) in the corresponding power part of the inner filter part is started, the lifting motor (12) drives the rotating shaft (13) to rotate in reverse through the main shaft, when the rotating shaft (13) rotates, the corresponding dust suppression filter screen (17) is retracted, and the dust suppression filter screen (17) moves to the direction of the rotating shaft (13) through the corresponding guide groove (14); the pump (11) is started again, and the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11), 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 part (21), the lifting motor (12) in the corresponding power part of the middle filter part is started, the lifting motor (12) drives the rotating shaft (13) to rotate in reverse through the main shaft, when the rotating shaft (13) rotates, the corresponding second stainless steel filter screen (16) is retracted, and the second stainless steel filter screen (16) moves to the direction of the rotating shaft (13) through the corresponding guide groove (14); Step 7: During the operation of step 3 or step 5, the air volume measuring instrument (18) detects the air volume entering the falling water layer (7) from the outside, when the air volume of the air volume measuring instrument (18) is less than the predetermined threshold value, the pump (11) is started, and the circulating water in the cooling water pool (6) is sent to the spray head (10) after being pressurized by the pump (11), the circulating water sprayed by the spray head (10) washes the filter screen.

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