Cooling water filtering device and hydraulic station system

Abstract

The utility model discloses a cooling water filtering device and a hydraulic station system. The cooling water filtering device comprises a filtering barrel, a filtering unit for filtering, and a backwashing structure which is arranged on the filtering barrel and is used for cleaning the filtering unit, a filtering water inlet is formed in the upper part of the filtering barrel, a filtering water outlet is formed in the lower part of the filtering barrel, an inner cavity, between the filtering water inlet and the filtering water outlet, of the filtering barrel is sequentially and hermetically connected with a first partition plate and a second partition plate from top to bottom, a first mounting hole is formed in the first partition plate, and a second mounting hole is formed in the second partition plate; the filter unit comprises a first-stage filter mesh bag and a second-stage filter mesh bag; the first-stage filter mesh bag is arranged in the first mounting hole in a penetrating manner and is in sealed connection with the first partition plate; the second-stage filter mesh bag is arranged in the second mounting hole in a penetrating manner and is in sealed connection with the second partition plate; the aperture of a filter hole of the first-stage filter mesh bag is larger than that of a filter hole of the second-stage filter mesh bag. The device can filter out particle impurities with different sizes in a water body in a grading manner, improves the filtering efficiency, can perform backwashing self-cleaning, and is time-saving and labor-saving.

Description

Cooling water filtration device and hydraulic station system Technical Field

[0001] This utility model relates to the field of water cooling technology for mining machinery, and in particular, to a cooling water filtration device. Furthermore, it also relates to a hydraulic station system including the cooling water filtration device. Background Technology

[0002] Hydraulic power units are the core guarantee for the stable and efficient operation of mechanical equipment. Their main function is to provide the necessary hydraulic power to the mechanical system, ensuring the efficiency and stability of mechanical operations. In a hydraulic power unit, the heat exchanger, as a key component, plays a crucial role in controlling the hydraulic oil temperature. Excessively high hydraulic oil temperature can lead to decreased equipment performance or even malfunctions, and the performance stability of the heat exchanger directly affects the reliability of the hydraulic system and the continuous operation of the equipment. Therefore, ensuring the efficient heat exchange performance of the heat exchanger is a vital aspect of ensuring the normal operation of the hydraulic system. In practical applications, cooling water circulation is widely used to reduce hydraulic oil temperature, which places high demands on the cleanliness of the heat exchanger.

[0003] In many mining production environments, the cleanliness of cooling water is difficult to guarantee due to site constraints and cost control. Impurities and minerals in the cooling water easily form scale on the inner walls of heat exchangers during long-term operation. Scale accumulation significantly reduces heat exchange efficiency, increases energy consumption, accelerates equipment aging, and shortens service life. The scale problem is particularly severe under high-load operation, even leading to heat exchanger blockage. When the blockage becomes too severe to remove, the equipment must be shut down for repair or replacement, delaying production, increasing operating costs, and significantly impacting overall production efficiency.

[0004] Existing cooling water filters typically clean the cooling water by installing a filter screen inside the filter canister, but this design has the following drawbacks:

[0005] (1) Low filtration efficiency. Most existing cooling water filters use single-stage filtration devices with limited filtration capacity. They are difficult to effectively remove particulate impurities of different sizes, especially in complex water environments. This can easily lead to equipment blockage and frequent cleaning, affecting filtration efficiency and service life.

[0006] (2) Cleaning and maintenance are cumbersome. Traditional filters usually require manual disassembly and cleaning of filter components, which not only increases maintenance costs and labor intensity, but may also lead to excessive downtime, affecting production continuity and efficiency. Summary of the Invention

[0007] This invention provides a cooling water filtration device to solve the technical problems of low filtration efficiency and complex cleaning and maintenance of existing cooling water filtration devices.

[0008] According to one aspect of the present invention, a cooling water filtration device is provided, comprising a filter barrel, a filter unit for filtering water flowing into the inner cavity of the filter barrel, and a backwashing structure disposed on the filter barrel for cleaning the filter unit.

[0009] The filter barrel has a filter inlet at the top and a filter outlet at the bottom. The filter barrel has a first partition and a second partition connected in sequence from top to bottom in the inner cavity between the filter inlet and the filter outlet. The first partition has a first mounting hole and the second partition has a second mounting hole.

[0010] The filter unit includes a primary filter bag that passes through a first mounting hole and is sealed to a first partition, and a secondary filter bag that passes through a second mounting hole and is sealed to a second partition. The pore size of the primary filter bag is larger than that of the secondary filter bag.

[0011] Furthermore, the filter barrel includes a barrel body and a barrel cover installed on the upper end of the barrel body. The inner wall of the barrel body is provided with a first ring platform for supporting the first partition and a second ring platform for supporting the second partition.

[0012] The first ring platform and the first partition plate are provided with a number of bolt holes in their circumferential directions, and the second ring platform and the second partition plate are provided with a number of bolt holes in their circumferential directions.

[0013] Furthermore, the inner diameter of the first ring platform is larger than the outer diameter of the second partition.

[0014] Furthermore, the backwashing structure includes a backwashing inlet for introducing backwashing water into the inner cavity of the tank and a backwashing outlet for discharging backwashing water. The backwashing inlet is located at the lower part of the tank, and the backwashing outlet is located at the upper part of the tank.

[0015] The flushing inlet is located below the second partition, and the flushing outlet is located above the first partition. The backwashing structure is used to flush the secondary filter bag and the primary filter bag in sequence before discharging the flushing water.

[0016] Furthermore, multiple first mounting holes are provided on the first partition plate along the circumferential direction, and multiple second mounting holes are provided on the second partition plate along the circumferential direction;

[0017] The first mounting hole and the second mounting hole are set in a one-to-one correspondence.

[0018] Furthermore, the primary filter bag includes a first filter screen and a first connecting ring mounted on the first filter screen. The first connecting ring is used to be mounted on the upper surface of the first partition, and the first filter screen is used to pass through the first mounting hole to the lower part of the first partition.

[0019] Bolt holes are correspondingly provided on the outer periphery of the first connecting ring and the first partition plate.

[0020] Furthermore, the secondary filter bag includes a second filter and a second connecting ring mounted on the second filter. The second connecting ring is used to be mounted on the upper surface of the second partition, and the second filter is used to pass through the second mounting hole to the lower part of the second partition.

[0021] Bolt holes are provided on the outer periphery of the second connecting ring and on the second partition plate respectively.

[0022] Furthermore, water pipes are connected to the filter inlet, filter outlet, flushing inlet, and flushing outlet, and control valves are installed on the water pipes.

[0023] Furthermore, the outer ring of the first partition plate is inclined downward in the direction toward the first mounting hole, and the outer ring of the second partition plate is inclined downward in the direction toward the second mounting hole, so that the upper end surfaces of both the first partition plate and the second partition plate form a flow guiding slope.

[0024] According to another aspect of the utility model, a hydraulic station system is also provided, including the aforementioned cooling water filtration device.

[0025] This utility model has the following beneficial effects:

[0026] 1. The cooling water filtration device of this utility model has a filtration unit with a primary filter bag and a secondary filter bag, and the filtration pore size of the primary filter bag is larger than that of the secondary filter bag, so as to perform graded filtration of water, which can effectively remove impurities of different particle sizes in the water, improve filtration efficiency and filtration effect; and the primary and secondary filter bags adopt a bag structure, which can accommodate a certain amount of impurities, effectively reduce filtration pressure, avoid clogging, and improve water output efficiency.

[0027] 2. This cooling water filtration device can periodically backwash the filtration unit through a backwashing structure installed on the filter barrel to remove impurities attached to the primary and secondary filter bags, thus achieving self-cleaning of the device. Compared with existing technologies, it eliminates the need to disassemble the device or perform manual cleaning, saving time and effort and significantly reducing maintenance costs.

[0028] 3. This cooling water filtration device has a simple structure and is easy to operate. It is especially suitable for environments with complex water quality, such as heat exchangers. It can ensure the cooling water filtration effect of the heat exchanger while significantly reducing the probability of heat exchanger blockage due to poor cooling water quality. It can greatly shorten the downtime of heat exchanger maintenance, ensure the continuous and stable operation of the equipment, effectively extend the service life of the equipment, and reduce system energy consumption.

[0029] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0031] Figure 1 is a cross-sectional schematic diagram of a cooling water filtration device according to a preferred embodiment of the present invention;

[0032] Figure 2 is a front view of the cooling water filtration device according to a preferred embodiment of the present invention;

[0033] Figure 3 is a schematic diagram of the structure of the primary filter bag of the filter unit in a preferred embodiment of the present invention;

[0034] Figure 4 is a top view of the filter unit of the preferred embodiment of the present invention after the primary filter bag is installed.

[0035] Legend:

[0036] 100. Filter barrel; 101. Barrel body; 1011. Filter inlet; 1012. Filter outlet; 1013. First ring platform; 1014. Second ring platform; 1015. Rinse inlet; 1016. Rinse outlet; 102. Barrel lid; 200. Filter unit; 201. Primary filter bag; 2011. First filter screen; 2012. First connecting ring; 202. Secondary filter bag; 2021. Second filter screen; 2022. Second connecting ring; 300. First partition; 301. First mounting hole; 400. Second partition; 401. Second mounting hole. Detailed Implementation

[0037] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0038] As shown in Figures 1 and 2, the cooling water filtration device of this embodiment is used to filter the cooling water in a heat exchanger. The cooling water filtration device includes a filter barrel 100, a filter unit 200 for filtering water flowing into the inner cavity of the filter barrel 100, and a backwashing structure disposed on the filter barrel 100 for cleaning the filter unit 200. Specifically, the inner wall of the filter barrel 100 is cylindrical, and it has a filter inlet 1011 and a filter outlet 1012. In this embodiment, the filter... The filter inlet 1011 is located on the upper side wall of the filter barrel 100, and the filter outlet 1012 is located on the lower side wall of the filter barrel 100. Both the filter inlet 1011 and the filter outlet 1012 are connected to the inner cavity of the filter barrel 100. The filter inlet 1011 is used to connect to the cooling water equipment to introduce cooling water into the filter barrel 100, and the filter outlet 1012 is used to connect to the heat exchanger to introduce the filtered cooling water into the heat exchanger to cool the hydraulic oil. Inside the filter barrel 100, a first partition 300 and a second partition 400 are sequentially and sealed from top to bottom along the axial direction. The first partition 300 and the second partition 400 are located between the filter inlet 1011 and the filter outlet 1012. The first partition 300 has a first mounting hole 301 along the axial direction, and the second partition 400 has a second mounting hole 401 along the axial direction. The first mounting hole 301 and the second mounting hole 401 are arranged in a one-to-one correspondence and communicate with the inner cavity of the filter barrel 100.

[0039] The filtration unit 200 includes a primary filter bag 201 for primary filtration of cooling water and a secondary filter bag 202 for secondary filtration of cooling water. The primary filter bag 201 is inserted into the first mounting hole 301 and sealed to the first partition 300. The secondary filter bag 202 is inserted into the second mounting hole 401 and sealed to the second partition 400 to ensure that the water flow strictly follows the filtration path and prevents unfiltered water from directly entering the filter outlet 1012. The pore size of the primary filter bag 201 is larger than that of the secondary filter bag 202 to perform graded filtration of the water, effectively removing impurities of different particle sizes from the water and improving filtration efficiency and effect. Furthermore, the two-stage filtration method using the primary filter bag 201 and the secondary filter bag 202, along with their bag-type structure, can accommodate a certain amount of impurities, effectively reducing filtration pressure, preventing clogging, and improving water output efficiency. Preferably, the number of baffles and filter bags can be increased according to the actual cooling water usage and water quality to flexibly set the filtration levels, meet the filtration needs of different scenarios, and improve adaptability.

[0040] The backwashing structure is located on the outer wall of the filter barrel 100 and communicates with the inner cavity of the filter barrel 100. The direction of the backwashing water flow is opposite to the direction of the filtered water flow, so that the high-pressure water sequentially washes the secondary filter bag 202 and the primary filter bag 201 to achieve self-cleaning of the filter unit 200. Compared with the prior art, there is no need to disassemble the device or perform manual cleaning, which saves time and effort and can significantly reduce maintenance costs.

[0041] In operation, the cooling water to be filtered is introduced into the filter tank 100 through the filter inlet 1011. After larger particles are intercepted by the primary filter bag 201, the water enters the secondary filter bag 202 for fine filtration. The filtered water is then discharged into the heat exchanger through the filter outlet 1012, completing the filtration cycle. When impurities accumulate on the primary and secondary filter bags 201 and 202, causing an increase in pressure differential, a backwashing process is initiated to restore filtration efficiency. Therefore, when this device is applied to heat exchangers in mining production environments, it ensures the effective filtration of cooling water while significantly reducing the probability of heat exchanger blockage due to poor cooling water quality. This greatly shortens downtime for heat exchanger maintenance, ensures continuous and stable operation of the equipment, effectively extends the equipment's service life, and reduces system energy consumption.

[0042] As shown in Figures 1 and 2, the filter canister 100 includes a canister body 101 and a canister cover 102 installed on the upper end of the canister body 101. The canister cover 102 covers the upper end of the canister body 101 to seal the canister opening. The periphery of the canister cover 102 is detachably fixed to the periphery of the canister body 101 by bolts, thereby ensuring that high-pressure flushing water will not flow out of the canister opening when the backwashing mechanism is performing backwashing operation upwards. Furthermore, when maintenance is required inside the canister body 101, it can be performed by removing the canister cover 102. Optionally, the canister cover 102 can also be hinged to the canister body 101 at one end and detachably fastened to the canister body 101 at the other end.

[0043] The barrel body 101 is provided with a first ring platform 1013 and a second ring platform 1014 from top to bottom. The first ring platform 1013 and the second ring platform 1014 are fixedly connected to the inner wall of the barrel body 101. Preferably, the first ring platform 1013 and the second ring platform 1014 are fixed to the inner wall of the barrel body 101 by welding to ensure the stability and sealing of the connection. The first annular platform 1013 is located below the first partition 300 to support the first partition 300, and the second annular platform 1014 is located below the second partition 400 to support the second partition 400. The first annular platform 1013 and the first partition 300 are provided with a plurality of bolt holes in their respective circumferential directions, and the second annular platform 1014 and the second partition 400 are provided with a plurality of bolt holes in their respective circumferential directions. By passing bolts sequentially through the bolt holes of the first partition 300 and the first annular platform 1013, the first partition 300 and the filter barrel 100 are sealed and fixed. By passing bolts sequentially through the bolt holes of the second partition 400 and the second annular platform 1014, the second partition 400 and the filter barrel 100 are sealed and fixed. Thus, the first partition 300 and the second partition 400 installed inside the filter barrel 100 axially divide the inner cavity of the filter barrel 100 into three chambers: an upper chamber, a middle chamber, and a lower chamber. The filter inlet 1011 is located in the upper chamber, and the filter outlet 1012 is located in the lower chamber. The primary filter bag 201 and the secondary filter bag 202 are respectively installed on the first partition 300 and the second partition 400. This allows the water to be filtered to enter the filter barrel 100 through the filter inlet 1011 and flow sequentially through the upper chamber, the middle chamber, and the lower chamber to the filter outlet 1012. This two-stage filtration process effectively reduces filtration pressure and improves filtration efficiency. Preferably, the three chambers have the same height.

[0044] As shown in Figure 1, the outer diameter of the first partition 300 is larger than the inner diameter of the first annular platform 1013, and the outer diameter of the second partition 400 is larger than the inner diameter of the second annular platform 1014, to ensure that the first partition 300 and the second partition 400 can be stably placed on the first annular platform 1013 and the second annular platform 1014 respectively for assembly. The inner diameter of the first annular platform 1013 is larger than the outer diameter of the second partition 400, to ensure that the second partition 400 can smoothly pass through the inner hole of the first annular platform 1013 and be placed on the second annular platform 1014 for assembly.

[0045] As shown in Figure 1, the backwashing structure includes a backwashing inlet 1015 for introducing backwashing water into the inner cavity of the tank 101 and a backwashing outlet 1016 for discharging backwashing water. The backwashing inlet 1015 is located on the lower side wall of the tank 101, and the backwashing outlet 1016 is located on the upper side wall of the tank 101. Both the backwashing inlet 1015 and the backwashing outlet 1016 are connected to the inner cavity of the tank 101. Specifically, the backwashing inlet 1015 is located below the second partition 400, and the backwashing outlet 1016 is located above the first partition 300, so that the backwashing water sequentially rinses the secondary filter bag 202 and the primary filter bag 201 before being discharged. Preferably, the flushing inlet 1015 and the filter outlet 1012 are symmetrically arranged on both sides of the barrel 101 and located at the same height. Similarly, the flushing outlet 1016 and the filter inlet 1011 are symmetrically arranged on both sides of the barrel 101 and located at the same height. In use, the flushing inlet 1015 is connected to a high-pressure water device to introduce high-pressure water into the lower chamber of the filter barrel 100. Utilizing the high-pressure characteristics of the high-pressure water, the water flow is directed towards the upper chamber of the filter barrel 100, thereby flushing impurities from the secondary filter bag 202 and the primary filter bag 201 into the upper chamber, where they are then discharged through the flushing outlet 1016, thus achieving self-cleaning of the filter unit 200. Alternatively, the filter outlet 1012 can be used as the flushing inlet 1015, and the filter inlet 1011 can be used as the flushing outlet 1016. When the filter unit 200 needs to be cleaned, the filter outlet 1012 is connected to a high-pressure water device, and the filter inlet 1011 is connected to a drainage device. High-pressure water can then be introduced into the filter tank 100 through the filter outlet 1012 to clean the secondary filter bag 202 and the primary filter bag 201 in sequence. After that, the flushing water is discharged through the filter inlet 1011.

[0046] As shown in Figure 1, multiple first mounting holes 301 are provided circumferentially on the first partition 300 to facilitate the installation of multiple primary filter bags 201. Multiple second mounting holes 401 are provided circumferentially on the second partition 400 to facilitate the installation of multiple secondary filter bags 202, further improving filtration efficiency and effect. The first mounting holes 301 and the second mounting holes 401 are arranged axially in a one-to-one correspondence, so that the primary filter bags 201 installed in the first mounting holes 301 and the secondary filter bags 202 installed in the second mounting holes 401 are axially aligned. This allows water filtered by the primary filter bags 201 to directly fall into the secondary filter bags 202 for secondary filtration, greatly improving filtration efficiency. Preferably, the first mounting holes 301 and the second mounting holes 401 have the same aperture.

[0047] As shown in Figures 1, 3, and 4, the primary filter bag 201 includes a first filter 2011 and a first connecting ring 2012 mounted on the first filter 2011. The first connecting ring 2012 is used to mount on the upper surface of the first partition 300, and the first filter is used to pass through the first mounting hole 301 to the lower part of the first partition 300. Thus, the first filter 2011 can pass through the first mounting hole 301 and have its lower end suspended in the central cavity of the filter barrel 100. The outer diameter of the first connecting ring 2012 is larger than the inner diameter of the first mounting hole 301, so that the filter can be placed on the first partition 300 through the first connecting ring 2012. Bolt holes are correspondingly opened on the outer periphery of the first connecting ring 2012 and the first partition 300. By sequentially passing bolts through the bolt holes in the first connecting ring 2012 and the first partition 300, the primary filter bag 201 is sealed and connected to the first partition 300. Preferably, the first connecting ring 2012 and the first mounting hole 301 are concentrically arranged to ensure a tight seal between the first connecting ring 2012 and the first partition 300, preventing cooling water leakage at the connection between the first connecting ring 2012 and the first partition 300, and ensuring that water flow from the upper chamber enters the middle chamber only through the first filter screen 2011, thus guaranteeing the effectiveness of primary filtration. Preferably, a sealing ring is provided between the first connecting ring 2012 and the first partition 300 to further ensure the sealing of the connection between the periphery of the first connecting ring 2012 and the first partition 300.

[0048] As shown in Figures 1, 3, and 4, the secondary filter bag 202 includes a second filter 2021 and a second connecting ring 2022 mounted on the second filter 2021. The second connecting ring 2022 is used to mount the upper surface of the second partition 400, and the second filter 2021 is used to pass through the second mounting hole 401 to the lower part of the second partition 400. Thus, the second filter 2021 can pass through the second mounting hole 401 and have its lower end suspended in the lower chamber of the filter barrel 100. The outer diameter of the second connecting ring 2022 is larger than the inner diameter of the second mounting hole 401. Bolt holes are correspondingly opened on the outer periphery of the second connecting ring 2022 and the second partition 400. By sequentially passing bolts through the bolt holes in the second connecting ring 2022 and the second partition 400, the secondary filter bag 202 is sealed and connected to the second partition 400. Preferably, the second connecting ring 2022 and the second mounting hole 401 are concentrically arranged to ensure a tight seal between the second connecting ring 2022 and the second partition 400, preventing cooling water leakage at the connection between the second connecting ring 2022 and the second partition 400, and ensuring that water flow from the middle chamber enters the lower chamber only through the second filter screen 2021, thus guaranteeing the effect of secondary filtration. Preferably, a sealing ring is provided between the second connecting ring 2022 and the second partition 400 to further ensure the sealing of the connection between the periphery of the second connecting ring 2022 and the second partition 400.

[0049] Preferably, the pore size of the first filter screen 2011 is larger than that of the second filter screen 2021, so that the first filter screen 2011 first removes larger particulate impurities from the water, and then the second filter screen 2021 performs fine filtration. Thus, through the cooperation of the first filter screen 2011 and the second filter screen 2021, not only can the cooling water be filtered in stages, reducing the filtration pressure and improving the filtration efficiency, but it can also effectively remove impurities of different particle sizes from the water, thereby improving the filtration effect.

[0050] Preferably, water pipes are connected to the filter inlet 1011, filter outlet 1012, flushing inlet 1015, and flushing outlet 1016, and control valves are installed on the water pipes, which can flexibly control the flow of water in the water pipes.

[0051] Preferably, the outer ring of the first partition 300 is inclined downwards towards the first mounting hole 301, and the outer ring of the second partition 400 is inclined downwards towards the second mounting hole 401, so that the upper end surfaces of both the first partition 300 and the second partition 400 form flow-guiding slopes. This ensures that the primary filter bag 201 installed in the first mounting hole 301 is positioned lower than the outer ring of the first partition 300, and the secondary filter bag 202 installed in the second mounting hole 401 is positioned lower than the outer ring of the second partition 400, guiding the water on the first partition 300 towards the primary filter bag 201 and the water on the second partition 400 towards the secondary filter bag 202, further improving filtration efficiency.

[0052] Preferably, sealing gaskets are provided between the first partition 300 and the first annular platform 1013, and between the second partition 400 and the second annular platform 1014, to ensure the sealing of the connection between the periphery of the first partition 300 and the first annular platform 1013, and between the periphery of the second partition 400 and the second annular platform 1014. Preferably, the sealing gaskets are rubber gaskets.

[0053] According to another aspect of the utility model, a hydraulic station system is also disclosed, including the aforementioned cooling water filtration device.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling water filtration device, characterized in that, The filter includes a filter barrel (100), a filter unit (200) for filtering water flowing into the inner cavity of the filter barrel (100), and a backwashing structure disposed on the filter barrel (100) for cleaning the filter unit (200). The filter barrel (100) has a filter inlet (1011) at its upper part and a filter outlet (1012) at its lower part. A first partition (300) and a second partition are sequentially and sealed from top to bottom within the inner cavity of the filter barrel (100) between the filter inlet (1011) and the filter outlet (1012). The plate (400) has a first mounting hole (301) on the first partition (300) and a second mounting hole (401) on the second partition (400). The filter unit (200) includes a primary filter bag (201) that passes through the first mounting hole (301) and is sealed to the first partition (300), and a secondary filter bag (202) that passes through the second mounting hole (401) and is sealed to the second partition (400). The pore size of the primary filter bag (201) is larger than that of the secondary filter bag (202).

2. The cooling water filtration device according to claim 1, characterized in that, The filter barrel (100) includes a barrel body (101) and a barrel cover (102) installed on the upper end of the barrel body (101). The inner wall of the barrel body (101) is provided with a first ring platform (1013) for supporting the first partition (300) and a second ring platform (1014) for supporting the second partition (400). The first ring platform (1013) and the first partition (300) are provided with a plurality of bolt holes in their respective circumferential directions. The second ring platform (1014) and the second partition (400) are provided with a plurality of bolt holes in their respective circumferential directions.

3. The cooling water filtration device according to claim 2, characterized in that, The inner diameter of the first ring platform (1013) is larger than the outer diameter of the second partition (400).

4. The cooling water filtration device according to claim 2, characterized in that, The backwashing structure includes a flushing inlet (1015) for introducing flushing water into the inner cavity of the barrel (101) and a flushing outlet (1016) for discharging flushing water. The flushing inlet (1015) is located at the lower part of the barrel (101), and the flushing outlet (1016) is located at the upper part of the barrel (101). The flushing inlet (1015) is located below the second partition (400), and the flushing outlet (1016) is located above the first partition (300). The backwashing structure is used to flush the secondary filter bag (202) and the primary filter bag (201) in sequence and then discharge the flushing water.

5. The cooling water filtration device according to claim 1, characterized in that, The first mounting hole (301) is provided in a plurality of circumferentially on the first partition (300), and the second mounting hole (401) is provided in a plurality of circumferentially on the second partition (400); the first mounting hole (301) and the second mounting hole (401) are provided in a one-to-one correspondence.

6. The cooling water filtration device according to claim 1, characterized in that, The primary filter bag (201) includes a first filter (2011) and a first connecting ring (2012) mounted on the first filter (2011). The first connecting ring (2012) is used to be mounted on the upper surface of the first partition (300). The first filter (2011) is used to pass through the first mounting hole (301) to the bottom of the first partition (300). Bolt holes are correspondingly opened on the outer periphery of the first connecting ring (2012) and the first partition (300).

7. The cooling water filtration device according to claim 1, characterized in that, The secondary filter bag (202) includes a second filter (2021) and a second connecting ring (2022) installed on the second filter (2021). The second connecting ring (2022) is used to be installed on the upper surface of the second partition (400). The second filter (2021) is used to pass through the second mounting hole (401) to the lower part of the second partition (400). The outer periphery of the second connecting ring (2022) has bolt holes corresponding to those on the second partition (400).

8. The cooling water filtration device according to claim 4, characterized in that, Water pipes are connected to the filter inlet (1011), the filter outlet (1012), the flushing inlet (1015), and the flushing outlet (1016), and control valves are installed on the water pipes.

9. The cooling water filtration device according to claim 1, characterized in that, The outer ring of the first partition (300) is inclined downward in the direction toward the first mounting hole (301), and the outer ring of the second partition (400) is inclined downward in the direction toward the second mounting hole (401), so that the upper end surfaces of the first partition (300) and the second partition (400) both form flow guiding slopes.

10. A hydraulic station system, characterized in that, The cooling water filtration device includes any one of claims 1 to 9.

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