Condensed water purification device

Abstract

The utility model relates to the technical field of purification devices, and provides a condensed water purification device which comprises a magnetic filter for filtering condensed water through a magnetic adsorption effect and a filter element filter for filtering the condensed water through a filter element, a water inlet of the magnetic filter is connected with a condensed water inlet pipe; a water inlet of the filter element filter is communicated with a water outlet of the magnetic filter, and a water outlet of the filter element filter is connected with a condensed water outlet pipe. According to the arrangement, the filters in the condensed water purification device are arranged in a classified and graded mode, condensed water passes through the magnetic filter and the filter element filter in sequence, most impurities in the condensed water are ferromagnetic substances, and most impurities in the condensed water can be filtered out through the magnetic filter; impurities in condensed water which is about to pass through the filter element filter are greatly reduced, so that dirt blockage of the filter element filter is reduced, and the service life of the filter element is prolonged. In addition, after the impurities in the magnetic filter are removed, the magnetic filter can be continuously used, the maintenance is convenient, and the maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to a condensate purification device. Background Art

[0002] Condensate refers to the liquid water that is converted from steam after cooling. This process usually occurs in thermal systems, such as power plants, industrial heating systems, or home heating systems. When the quality of condensate in a thermal system is poor, it cannot be recycled and is discharged directly. The discharge of condensate will result in a waste of heat energy and water resources. Before using the condensate, it is generally necessary to treat the condensate. For thermal systems with lower parameters, the condensate is generally treated through a filtration process. For thermal systems with higher parameters, the condensate is generally treated through filtration and desalination processes. Among them, the filtration process for condensate is more important. Poor filtration effect of condensate will cause corrosion, scaling, blockage and other problems in the thermal system, which will have a certain impact on the safety, energy consumption and water consumption of the thermal system. It may even cause problems such as shortened regeneration cycle of desalination equipment and resin contamination.

[0003] The majority of corrosion products in condensate range in particle size from 1 to 100 microns, with approximately 60% of these products larger than 10 microns and 80% larger than 5 microns. Conventional condensate filters are typically filtered using tubular filters, with filter elements typically having clearances of 10 microns and 5 microns. During startup, 10-micron filter elements are used, but after normal operation, to ensure outlet water quality, they must be replaced with 5-micron or smaller elements. Due to the small clearances in filter elements, they are prone to clogging and fouling, resulting in a generally short service life and replacement cycles, leading to high ongoing maintenance costs.

[0004] Therefore, how to solve the problems of short service life and high subsequent maintenance cost of the filter element of the condensate purification device in the related art has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0005] The utility model provides a condensate purification device, which is used to solve the defects of a condensate purification device in the related art, such as a short service life of a filter element and a high subsequent maintenance cost.

[0006] The utility model provides a condensate water purification device, comprising a magnetic filter and a filter element filter;

[0007] The magnetic filter is suitable for filtering the condensate water once by magnetic adsorption to remove ferromagnetic impurities in the condensate water. The magnetic filter has a water inlet and a water outlet. The water inlet of the magnetic filter is suitable for connecting to the condensate water inlet pipe, and the water outlet of the magnetic filter is suitable for discharging the condensate water after the primary filtration.

[0008] The cartridge filter is suitable for secondary filtration of condensate water through a filter element. The cartridge filter has a water inlet and a water outlet. The water inlet of the cartridge filter is connected to the water outlet of the magnetic filter. The water outlet of the cartridge filter is suitable for connecting to a condensate outlet pipe.

[0009] According to a condensate purification device provided by the present invention, the filter cartridge filter includes a first filter cartridge filter and / or a second filter cartridge filter, and the filtering accuracy of the second filter cartridge filter is higher than the filtering accuracy of the first filter cartridge filter;

[0010] When the filter cartridge filter includes the first filter cartridge filter and the second filter cartridge filter, the water inlet of the second filter cartridge filter is connected to the water outlet of the first filter cartridge filter, the water inlet of the first filter cartridge filter is connected to the water outlet of the magnetic filter, and the water outlet of the second filter cartridge filter is suitable for connecting to the condensate outlet pipe.

[0011] According to a condensate purification device provided by the present utility model, the filter cartridge filter includes the first filter cartridge filter and the second filter cartridge filter, and at least two of the magnetic filter, the first filter cartridge filter and the second filter cartridge filter are provided;

[0012] The condensate water purification device also includes a first water inlet main pipe, a second water inlet main pipe, a third water inlet main pipe and a water outlet main pipe. The first water inlet main pipe is connected to the condensate water inlet pipe, the water inlet of each magnetic filter is connected to the first water inlet main pipe, the water outlet of each magnetic filter is connected to the second water inlet main pipe, the water inlet of each first filter cartridge filter is connected to the second water inlet main pipe, the water outlet of each first filter cartridge filter is connected to the third water inlet main pipe, the water inlet of each second filter cartridge filter is connected to the third water inlet main pipe, the water outlet of each second filter cartridge filter is connected to the water outlet main pipe, and the water outlet main pipe is connected to the condensate water outlet pipe.

[0013] According to a condensate purification device provided by the utility model, it also includes a first control valve, a second control valve and a third control valve;

[0014] Each of the magnetic filters is correspondingly provided with a pair of the first control valves, and the two first control valves are respectively provided at the water inlet and the water outlet of the magnetic filter;

[0015] Each of the first filter cartridge filters is correspondingly provided with a pair of the second control valves, and the two second control valves are respectively provided at the water inlet and the water outlet of the first filter cartridge filter;

[0016] Each of the second filter cartridge filters is correspondingly provided with a pair of the third control valves, and the two third control valves in the pair are respectively provided at the water inlet and the water outlet of the second filter cartridge filter.

[0017] According to a condensate purification device provided by the present invention, the magnetic filter includes a first shell, a first cover plate and a magnetic adsorption mechanism, the magnetic adsorption mechanism is arranged inside the first shell, and the first cover plate is detachably connected to the first shell;

[0018] The magnetic adsorption mechanism includes a first fixing plate and at least two magnetic bars, each of which is arranged in parallel. The ends of each magnetic bar are detachably connected to the first fixing plate, and the first fixing plate is detachably connected to the first shell.

[0019] According to a condensate purification device provided by the present invention, the water inlet is provided at the bottom of the first shell, the water outlet is provided at the first cover plate, a pair of first fixing plates are provided, and the magnetic bars are spaced apart and distributed between the pair of first fixing plates;

[0020] The first fixing plate is provided with a plurality of first water distribution holes, and the plurality of first water distribution holes are distributed at intervals on the first fixing plate.

[0021] According to a condensate purification device provided by the utility model, a first handle is provided on the magnetic adsorption mechanism;

[0022] And / or, the magnetic bar includes a shell and a permanent magnet, the shell is a columnar structure, and a plurality of permanent magnets are provided, the plurality of permanent magnets are arranged inside the shell, and the plurality of permanent magnets are arranged in sequence along the axial direction of the shell.

[0023] According to a condensate purification device provided by the present invention, the filter element filter comprises a second housing, a second cover plate and a filter element mechanism, the filter element mechanism is arranged inside the second housing, and the second cover plate is detachably connected to the second housing;

[0024] The filter element mechanism includes a filter element body and a second fixed plate, the filter element body has a water outlet channel, the water outlet channel runs through the first end of the filter element body, the second fixed plate is arranged at the first end of the filter element body, the second fixed plate is detachably connected to the second shell, and the second fixed plate is provided with a water outlet hole opposite to the water outlet channel.

[0025] According to a condensate purification device provided by the utility model, a second handle is provided on the filter element mechanism;

[0026] And / or, the filter element mechanism also includes a third fixing plate, which is arranged at the second end of the filter element body, and the side of the third fixing plate away from the filter element body and the inner wall of the second shell form a buffer area, and the third fixing plate is provided with a second water distribution hole, and there are multiple second water distribution holes, and the multiple second water distribution holes are distributed at intervals between the inner wall of the second shell and the outer wall of the filter element body.

[0027] According to the utility model, a condensate purification device further includes a pressure detection mechanism, which is suitable for detecting the pressure difference between the condensate inlet pipe and the condensate outlet pipe;

[0028] And / or, it also includes a supporting frame, and each of the magnetic filters, each of the first filter cartridge filters, each of the second filter cartridge filters, the first water inlet main pipe, the second water inlet main pipe, the third water inlet main pipe, the water outlet main pipe, each of the first control valves, each of the second control valves and each of the third control valves are all arranged on the supporting frame.

[0029] The condensate purification device provided by the utility model includes a magnetic filter and a cartridge filter. The magnetic filter has a water inlet and a water outlet, and the water inlet of the magnetic filter is used to connect to the condensate inlet pipe. The cartridge filter has a water inlet and a water outlet, and the water inlet of the cartridge filter is connected to the water outlet of the magnetic filter, and the water outlet of the cartridge filter is used to connect to the condensate outlet pipe. The magnetic filter is arranged upstream of the cartridge filter. When purifying the condensate, the condensate first passes through the magnetic filter and then passes through the cartridge filter. The magnetic filter is used to perform a primary filtration of the condensate through magnetic adsorption to remove ferromagnetic impurities in the condensate. The water outlet of the magnetic filter is used to discharge the condensate that has passed the primary filtration, so that the condensate that has passed the primary filtration enters the cartridge filter. The cartridge filter is used to perform a secondary filtration of the condensate through the filter element to further filter out impurities in the condensate other than ferromagnetic impurities. Thus configured, the condensate purification device provided by the present invention classifies and arranges the filters therein in a graded manner, so that the condensate passes through the magnetic filter and the cartridge filter in sequence. Since most impurities in the condensate are ferromagnetic, the magnetic filter can filter out most of the impurities in the condensate, significantly reducing the amount of impurities in the condensate after a single filtration step, that is, reducing the amount of impurities in the condensate that is about to pass through the cartridge filter, thereby reducing clogging of the cartridge filter and extending the service life of the cartridge filter. Furthermore, the ferromagnetic impurities removed by the magnetic filter are only magnetically adsorbed to the surface of the magnetic mechanism within the magnetic filter. The adsorption and filtration process does not damage the magnetic mechanism. After the impurities in the magnetic filter are removed, the magnetic filter can continue to be used, making maintenance convenient and eliminating the need to repair or replace parts within the magnetic filter. This reduces maintenance costs and solves the problems of short service life and high subsequent maintenance costs of the filter cartridges in condensate purification devices of the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a structural schematic diagram of a condensate water purification device provided by the utility model.

[0032] Figure 2 It is a structural schematic diagram of the magnetic filter provided by the utility model.

[0033] Figure 3 This is a schematic diagram of the distribution of the first water distribution holes and the magnetic rods provided by the utility model on the first fixed plate.

[0034] Figure 4 It is a structural schematic diagram of the filter element filter provided by the utility model.

[0035] Reference numerals:

[0036] 1. Magnetic filter; 2. Condensate inlet pipe; 3. Condensate outlet pipe; 4. First filter element; 5. Second filter element; 6. First water inlet pipe; 7. Second water inlet pipe; 8. Third water inlet pipe; 9. Water outlet pipe; 10. First control valve; 11. Second control valve; 12. Third control valve; 13. First housing; 14. First cover plate; 15. First fixing plate; 16. Magnetic rod; 17. First water distribution hole; 18. First handle; 19. Second housing; 20. Second cover plate; 21. Filter element body; 22. Second fixing plate; 23. Water outlet channel; 24. Water outlet; 25. Second handle; 26. Third fixing plate; 27. Second water distribution hole; 28. Pressure detection mechanism. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] The following combination Figures 1 to 4 When describing the condensate purification device of the present invention, it should be noted that the condensate purification device provided by the present invention is not limited to being used for purifying condensate, but can also be used for purifying other liquids.

[0039] like Figures 1 to 4 As shown, the condensate purification device provided by the embodiment of the utility model includes a magnetic filter 1 and a filter element filter.

[0040] Specifically, the magnetic filter 1 has a water inlet and a water outlet, and the water inlet of the magnetic filter 1 is used to connect to the condensate inlet pipe 2. The filter cartridge has a water inlet and a water outlet, and the water inlet of the filter cartridge is connected to the water outlet of the magnetic filter 1, and the water outlet of the filter cartridge is used to connect to the condensate outlet pipe 3.

[0041] The magnetic filter 1 is arranged at the upstream position of the filter element. When condensed water is purified, the condensed water first passes through the magnetic filter 1 and then passes through the filter element.

[0042] The magnetic filter 1 is used to filter the condensate water once by magnetic adsorption to remove ferromagnetic impurities in the condensate water. The outlet of the magnetic filter 1 is used to discharge the condensate water after the primary filtration, so that the condensate water after the primary filtration enters the filter element.

[0043] The filter element filter is used to perform secondary filtration on the condensate water through the filter element to further remove impurities in the condensate water except ferromagnetic impurities.

[0044] Through extensive research, the applicant discovered that condensate contamination is primarily caused by raw water, system leakage, and system corrosion. Corrosion generally accounts for over 80% of the contamination. Corrosion products in thermal systems are primarily generated by the corrosion of iron and copper, most of which are ferromagnetic.

[0045] The condensate purification device provided by the embodiment of the present invention classifies and arranges the filters therein in a graded manner, so that the condensate passes through the magnetic filter 1 and the filter element filter in sequence. Most of the impurities in the condensate are ferromagnetic substances. The magnetic filter 1 can filter out most of the impurities in the condensate, greatly reducing the impurities in the condensate after one filtration, that is, reducing the impurities in the condensate that is about to pass through the filter element filter, thereby reducing the clogging of the filter element filter and extending the service life of the filter element of the filter element filter. In addition, the ferromagnetic impurities filtered out by the magnetic filter 1 are only adsorbed on the surface of the magnetic structure within the magnetic filter 1 by magnetic force. The magnetic adsorption filtration process does not damage the magnetic structure. After the impurities in the magnetic filter 1 are removed, the magnetic filter 1 can continue to be used, which is convenient for maintenance. There is no need to repair or replace the parts within the magnetic filter 1, and the maintenance cost is low. This solves the problem of the short service life and high subsequent maintenance cost of the filter element of the condensate purification device in the related art.

[0046] In the embodiment of the present invention, the filter element filter includes a first filter element filter 4 and / or a second filter element filter 5 , wherein the filtering accuracy of the second filter element filter 5 is higher than the filtering accuracy of the first filter element filter 4 .

[0047] In some scenarios where the requirements for condensate filtration are relatively low, the magnetic filter 1 and the first filter cartridge 4 can be used for filtration. In some scenarios where the requirements for condensate filtration are relatively high, the magnetic filter 1 and the second filter cartridge 5 can be used for filtration. In some scenarios where the requirements for condensate filtration are extremely high, the magnetic filter 1, the first filter cartridge 4 and the second filter cartridge 5 can be used for filtration.

[0048] When the filter cartridge filter includes both the first filter cartridge filter 4 and the second filter cartridge filter 5, the water inlet of the second filter cartridge filter 5 is connected to the water outlet of the first filter cartridge filter 4, the water inlet of the first filter cartridge filter 4 is connected to the water outlet of the magnetic filter 1, and the water outlet of the second filter cartridge filter 5 is used to connect to the condensate outlet pipe 3.

[0049] That is, the first cartridge filter 4 is positioned upstream of the second cartridge filter 5. After the magnetic filter 1 removes ferromagnetic impurities from the condensate, the first cartridge filter 4, which has a lower filtration accuracy, is first used to remove larger impurities from the condensate. Then, the second cartridge filter 5, which has a higher filtration accuracy, is used to remove smaller impurities from the condensate. The second cartridge filter 5 improves the filtration effect on the condensate. Furthermore, the first cartridge filter 4 reduces clogging of the second cartridge filter 5 by larger impurities, thereby extending the service life of the filter element of the second cartridge filter 5 and prolonging the replacement cycle of the filter element of the second cartridge filter 5.

[0050] In this embodiment, the filter cartridge includes both a first filter cartridge 4 and a second filter cartridge 5. Furthermore, at least two of each of the magnetic filter 1, the first filter cartridge 4, and the second filter cartridge 5 are provided. The condensate purification device also includes a first water inlet main pipe 6, a second water inlet main pipe 7, a third water inlet main pipe 8, and a water outlet main pipe 9.

[0051] The first water inlet main pipe 6 is connected to the condensate inlet pipe 2, and the water inlet of each magnetic filter 1 is connected to the first water inlet main pipe 6. Condensate in the condensate inlet pipe 2 is first collected in the first water inlet main pipe 6 and then distributed to the magnetic filters 1, ensuring uniform distribution of the condensate to each magnetic filter 1. Specifically, the condensate inlet pipe 2 can be connected to the middle position of the first water inlet main pipe 6 along the axis, and the water inlet of each magnetic filter 1 can be connected to different positions along the axis of the first water inlet main pipe 6.

[0052] The water outlet of each magnetic filter 1 is connected to the second water inlet main pipe 7, and the water inlet of each first cartridge filter 4 is connected to the second water inlet main pipe 7. Condensate filtered by each magnetic filter 1 is first collected in the second water inlet main pipe 7 and then distributed to each first cartridge filter 4. This ensures that the condensate is evenly distributed within each first cartridge filter 4 and that the condensate entering each first cartridge filter 4 has a high degree of consistency in quality. Specifically, the water outlet of each magnetic filter 1 can be connected to different positions along the axis of the second water inlet main pipe 7, and the water inlet of each first cartridge filter 4 can be connected to different positions along the axis of the second water inlet main pipe 7.

[0053] The outlet of each first filter cartridge 4 is connected to the third water inlet main pipe 8, the inlet of each second filter cartridge 5 is connected to the third water inlet main pipe 8, and the outlet of each second filter cartridge 5 is connected to the outlet main pipe 9, which is connected to the condensate outlet pipe 3. Condensate filtered by each first filter cartridge 4 is first collected in the third water inlet main pipe 8 and then distributed to each second filter cartridge 5. This ensures that the condensate is evenly distributed within each second filter cartridge 5 and that the condensate entering each second filter cartridge 5 has a high degree of consistency in quality. Specifically, the outlet of each first filter cartridge 4 can be connected to different axial positions of the third water inlet main pipe 8, the inlet of each second filter cartridge 5 can be connected to different axial positions of the third water inlet main pipe 8, the outlet of each second filter cartridge 5 can be connected to different axial positions of the outlet main pipe 9, and the condensate outlet pipe 3 can be connected to the middle axial position of the outlet main pipe 9.

[0054] With this arrangement, condensate in the first water inlet main pipe 6 can enter the interior of any one of the magnetic filters 1, condensate output from any one of the magnetic filters 1 can enter any one of the first cartridge filters 4, condensate output from any one of the first cartridge filters 4 can enter any one of the second cartridge filters 5, and condensate output from any one of the second cartridge filters 5 can enter the water outlet main pipe 9. In other words, if some of the magnetic filters 1, some of the first cartridge filters 4, and some of the second cartridge filters 5 become clogged and unable to continue filtering, the condensate purification device provided in this embodiment can still continue to filter the condensate by relying on the remaining magnetic filters 1, first cartridge filters 4, and second cartridge filters 5.

[0055] In this embodiment, the magnetic filter 1, first filter cartridge 4, and second filter cartridge 5 are separate components connected by piping. The relative positions of the magnetic filter 1, first filter cartridge 4, and second filter cartridge 5 can be determined based on the site space, providing high flexibility. For sites with larger height dimensions and smaller footprints, the magnetic filter 1, first filter cartridge 4, and second filter cartridge 5 can be distributed vertically. For sites with smaller height dimensions and larger footprints, the magnetic filter 1, first filter cartridge 4, and second filter cartridge 5 can be distributed horizontally.

[0056] In the embodiment of the present invention, the condensate purification device further includes a first control valve 10, a second control valve 11 and a third control valve 12, and the first control valve 10, the second control valve 11 and the third control valve 12 are all arranged in pairs.

[0057] Each magnetic filter 1 is provided with a pair of first control valves 10. Two of the first control valves 10 are located at the water inlet and outlet of the magnetic filter 1, respectively. The pair of first control valves 10 can control the opening and closing of the water inlet and outlet of the corresponding magnetic filter 1. During operation of the condensate purification device, controlling the first control valves 10 corresponding to one or some of the magnetic filters 1 to be in the off state can disconnect the corresponding magnetic filter 1 from the first water inlet main 6 and the second water inlet main 7. This allows for cleaning and maintenance of the corresponding magnetic filter 1 without affecting the operation of the remaining magnetic filters 1 and the cartridge filter, thus achieving online cleaning.

[0058] Each first cartridge filter 4 is provided with a pair of second control valves 11. Two of the second control valves 11 are respectively provided at the water inlet and water outlet of the first cartridge filter 4. The opening and closing of the water inlet and water outlet of the corresponding first cartridge filter 4 can be controlled by the pair of second control valves 11. During the operation of the condensate purification device, controlling the second control valves 11 corresponding to one of the first cartridge filters 4 or part of the first cartridge filters 4 to be in the cut-off state can disconnect the corresponding first cartridge filter 4 from the second water inlet main 7 and the third water inlet main 8. At this time, it is suitable for cleaning and maintenance of the corresponding first cartridge filter 4, and the cleaning and maintenance process does not affect the operation of the remaining magnetic filters 1 and cartridge filters, thus achieving online cleaning.

[0059] Each second cartridge filter 5 is provided with a pair of third control valves 12. Two of the third control valves 12 are respectively provided at the water inlet and water outlet of the second cartridge filter 5. The opening and closing of the water inlet and water outlet of the corresponding second cartridge filter 5 can be controlled by the pair of third control valves 12. During the operation of the condensate purification device, the third control valves 12 corresponding to one of the second cartridge filters 5 or part of the second cartridge filters 5 are controlled to be in the cut-off state, so that the corresponding second cartridge filter 5 can be disconnected from the third water inlet pipe 8 and the water outlet pipe 9. At this time, it is suitable for cleaning and maintenance of the corresponding second cartridge filter 5, and the cleaning and maintenance process does not affect the operation of the remaining magnetic filters 1 and cartridge filters, thus achieving online cleaning.

[0060] In this embodiment of the utility model, the magnetic filter 1 includes a first housing 13, a first cover plate 14, and a magnetic adsorption mechanism. The magnetic adsorption mechanism is disposed within the first housing 13, and the first cover plate 14 is detachably connected to the first housing 13. To clean the magnetic adsorption mechanism, the first cover plate 14 is removed from the first housing 13 to remove the magnetic adsorption mechanism from the first housing 13, facilitating cleaning.

[0061] For the detachable connection between the first cover plate 14 and the first shell 13 , a flange may be provided on the first shell 13 , and the first cover plate 14 and the first shell 13 may be connected together using bolts and nuts.

[0062] A first handle 18 may be provided on the magnetic adsorption mechanism to facilitate application of force to the magnetic adsorption mechanism during disassembly, assembly, and cleaning.

[0063] In this embodiment, the magnetic adsorption mechanism includes a first fixing plate 15 and at least two magnetic bars 16 . The magnetic bars 16 are arranged in parallel and spaced apart. The ends of the magnetic bars 16 are detachably connected to the first fixing plate 15 .

[0064] For the detachable connection between the magnetic rod 16 and the first fixing plate 15 , a threaded hole can be provided at the end of the magnetic rod 16 , and a connecting bolt is passed through the first fixing plate 15 , and the connecting bolt is threadedly connected to the threaded hole of the magnetic rod 16 .

[0065] To ensure the stability of the magnetic adsorption mechanism, the first fixing plate 15 is detachably connected to the first housing 13. Specifically, a mounting plate can be provided inside the first housing 13, the edge of the first fixing plate 15 is overlapped on the mounting plate, and the first fixing plate 15 and the mounting plate are connected together using bolts and nuts.

[0066] In this embodiment, the water inlet of the magnetic filter 1 is disposed at the bottom of the first housing 13, and the water outlet of the magnetic filter 1 is disposed at the first cover plate 14. The magnetic adsorption mechanism is disposed between the bottom of the first housing 13 and the first cover plate 14, with the axes of the magnetic bars 16 being parallel to each other and extending from the first cover plate 14 to the bottom of the first housing 13.

[0067] A pair of first fixing plates 15 are provided, parallel to each other and spaced apart. Magnetic bars 16 are disposed between the pair of first fixing plates 15 and spaced apart between the pair of first fixing plates 15. One end of a magnetic bar 16 is connected to one of the first fixing plates 15, and the other end is connected to the other first fixing plate 15.

[0068] A gap can be provided between the edge of the first fixing plate 15 and the inner wall of the first housing 13. After condensed water enters the magnetic filter 1, it can flow through the gap to the first cover plate 14. To further evenly distribute the condensed water within the first housing 13, a plurality of first water distribution holes 17 can be provided on the first fixing plate 15. The plurality of first water distribution holes 17 are spaced apart on the first fixing plate 15.

[0069] Specifically, a first water distribution hole 17 is provided on the first fixed plate 15 at a position corresponding to the gap between adjacent magnetic rods 16 , so that condensed water can flow around any magnetic rod 16 , so that any magnetic rod 16 can exert a magnetic adsorption effect and fully perform magnetic adsorption and filtration on the condensed water entering the first shell 13 .

[0070] In this embodiment, the magnetic rod 16 includes a shell and a permanent magnet. The shell is a columnar structure. There are multiple permanent magnets. The multiple permanent magnets are arranged inside the shell and arranged in sequence along the axis direction of the shell.

[0071] In the embodiment of the present invention, the first filter element filter 4 and the second filter element filter 5 have similar structures, both including a second housing 19 , a second cover plate 20 and a filter element mechanism.

[0072] The filter element is disposed within the second housing 19, and the second cover 20 is detachably connected to the second housing 19. When the filter element needs to be cleaned or replaced, the second cover 20 is removed from the second housing 19 to remove the filter element from the second housing 19, making it easier to clean the filter element.

[0073] For the detachable connection between the second cover plate 20 and the second shell 19 , a flange plate may be provided on the second shell 19 , and the second cover plate 20 and the second shell 19 may be connected together using bolts and nuts.

[0074] A second handle 25 may be provided on the filter element mechanism to facilitate application of force to the filter element mechanism during disassembly, assembly, and cleaning.

[0075] In this embodiment of the present invention, the filter element mechanism includes a filter element body 21 and a second fixing plate 22. The filter element body 21 has a water outlet channel 23 that extends through the first end of the filter element body 21. The second fixing plate 22 is disposed at the first end of the filter element body 21 and is provided with a water outlet hole 24 opposite to the water outlet channel 23. Condensate enters the water outlet channel 23 of the filter element body 21 from the outside of the filter element body 21 and flows out of the water outlet hole 24. Impurities in the condensate are intercepted on the outside of the filter element body 21.

[0076] To ensure the stability of the filter element mechanism, the second fixing plate 22 is detachably connected to the second housing 19. Specifically, a mounting plate can be provided inside the second housing 19, the edge of the second fixing plate 22 is overlapped on the mounting plate, and the second fixing plate 22 and the mounting plate are connected together using bolts and nuts.

[0077] In this embodiment, the water inlet of the filter element is set at the bottom of the second shell 19, the water outlet of the filter element is set at the second cover plate 20, and the filter element mechanism is set between the bottom of the second shell 19 and the second cover plate 20.

[0078] The filter element mechanism also includes a third fixing plate 26, which is disposed at the second end of the filter element body 21. A gap exists between the third fixing plate 26 and the bottom of the second housing 19. A gap exists between the side of the third fixing plate 26 facing away from the filter element body 21 and the bottom wall of the second housing 19, thereby forming a buffer zone on the side of the third fixing plate 26 facing away from the filter element body 21. Multiple second water distribution holes 27 are provided on the third fixing plate 26, and are spaced apart between the inner wall of the second housing 19 and the outer wall of the filter element body 21.

[0079] The condensed water entering the buffer area of ​​the second housing 19 can enter the space between the filter element body 21 and the inner wall of the second housing 19 through the second water distribution holes 27 and then enter the water outlet channel 23 after being filtered by the filter element body 21.

[0080] The provision of the buffer area and the second water distribution hole 27 can evenly distribute the condensed water in the second shell 19, so that each position of the filter element body 21 can effectively play a filtering role, thereby improving the filtering effect of the filter element filter.

[0081] In an embodiment of the present invention, the condensate purification device also includes a pressure detection mechanism 28, which can detect the pressure difference between the condensate inlet pipe 2 and the condensate outlet pipe 3, and determine the dirt blockage condition inside the condensate purification device based on the pressure difference, so as to clean and maintain the magnetic filter 1 and the filter element filter as needed.

[0082] Specifically, when the pressure difference between the condensate inlet pipe 2 and the condensate outlet pipe 3 is greater than or equal to a first preset value, each of the magnetic filters 1, the first filter cartridge filter 4, and the second filter cartridge filter 5 can be cleaned or replaced one by one. When one of the magnetic filters 1, the first filter cartridge filter 4, and the second filter cartridge filter 5 is cleaned or replaced, the other filters can operate normally. When the pressure difference between the condensate inlet pipe 2 and the condensate outlet pipe 3 is greater than or equal to a second preset value, the condensate purification device is stopped, and after each of the magnetic filters 1, the first filter cartridge filter 4, and the second filter cartridge filter 5 is cleaned or replaced, the condensate purification device is restarted.

[0083] The second preset value is greater than the first preset value. Specifically, the first preset value can be set to 0.10 MPa and the second preset value can be set to 0.12 MPa.

[0084] In some embodiments, a differential pressure transmitter is selected as the pressure detection mechanism 28 , and two detection ends of the differential pressure transmitter are connected to the condensate inlet pipe 2 and the condensate outlet pipe 3 respectively.

[0085] In other embodiments, a pressure sensor is selected as the pressure detection mechanism 28, and pressure sensors are respectively arranged in the condensate inlet pipe 2 and the condensate outlet pipe 3 to detect the pressure in the condensate inlet pipe 2 and the pressure in the condensate outlet pipe 3, respectively, so that the pressure difference can be calculated and determined.

[0086] In an embodiment of the present utility model, the condensate purification device also includes a supporting frame, and each magnetic filter 1, each first filter cartridge filter 4, each second filter cartridge filter 5, a first water inlet main pipe 6, a second water inlet main pipe 7, a third water inlet main pipe 8, a water outlet main pipe 9, each first control valve 10, each second control valve 11 and each third control valve 12 are all arranged on the supporting frame.

[0087] In a specific embodiment, the filtration accuracy of the filter body 21 of the first filter element 4 can be set to 5 microns, and the filtration accuracy of the filter body 21 of the second filter element 5 can be set to 1 micron. The condensate water purification device provided by the present embodiment adopts three-stage filtration: the magnetic filter 1 removes ferromagnetic impurities in the condensate water, the first filter element 4 removes impurities larger than 5 microns in the condensate water, and the second filter element 5 removes impurities larger than 1 micron in the condensate water. This improves the water quality of the condensate water purification device and extends the service life of the filter bodies 21 of the first filter element 4 and the second filter element 5.

[0088] The filter element body 21 in the first filter element filter 4 and the filter element body 21 in the second filter element filter 5 can be made of, but not limited to, filter cloth, winding, carbon layer, nano-adsorption material, ceramic sintering, metal sintering and other filter materials.

[0089] The permanent magnet in the magnetic filter 1 can be, but is not limited to, made of rare earth permanent magnet materials such as neodymium iron boron and samarium cobalt, which have the advantages of strong magnetic force, high iron removal efficiency, and strong dirt holding capacity.

[0090] In addition, the magnetic filter 1, the first cartridge filter 4, and the second cartridge filter 5 are standardized. For example, the water treatment capacity of each magnetic filter 1 is 30-50 tons / hour, the water treatment capacity of each first cartridge filter 4 is 25-40 tons / hour, and the water treatment capacity of each second cartridge filter 5 is 20-30 tons / hour. The number of magnetic filters 1, the number of first cartridge filters 4, and the number of second cartridge filters 5 required to be arranged in parallel can be determined based on the total water treatment capacity.

[0091] In other words, the condensate purification device provided by the present invention includes multiple standardized low-flow filters. Compared to related art methods that directly install a large-diameter, high-flow, non-standard filter based on the total water volume to be processed, the condensate purification device provided by the present invention is more flexible, more adaptable to on-site installation space, and easier to inspect and repair.

[0092] In the prior art, if the ferromagnetic impurity content in the condensate is too high and the purification device cannot meet the filtering requirements, the condensate with excessively high ferromagnetic impurity content will be discharged. For example, the prior art uses a 1-5 micron tubular iron removal filter, which limits the ferromagnetic impurity content in the condensate to 50-100 micrograms / liter or less. As a result, condensate with a ferromagnetic impurity content greater than 100 micrograms / liter cannot be recycled and can only be directly discharged, resulting in a large amount of condensate waste. In the condensate purification device provided by the embodiment of the present invention, by providing a magnetic filter 1, it is possible to effectively reduce the clogging of the filter element filter and increase the limit on the ferromagnetic impurity content in the condensate to 3000 micrograms / liter. As long as the condensate has a ferromagnetic impurity content less than or equal to 3000 micrograms / liter, it can enter the condensate purification device provided by the embodiment of the present invention for filtration, greatly reducing the waste of condensate discharge.

[0093] In addition, the magnetic filter 1, first cartridge filter 4, and second cartridge filter 5 can be designed with redundancy, with at least one redundant unit each. When one magnetic filter 1 is cleaned or replaced, the remaining magnetic filters 1 can continue to operate as required. Similarly, when one first cartridge filter 4 is cleaned or replaced, the remaining first cartridge filters 4 can continue to operate as required; and when one second cartridge filter 5 is cleaned or replaced, the remaining second cartridge filters 5 can continue to operate as required.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A condensate water purification device, characterized in that: It includes a magnetic filter (1) and a cartridge filter; The magnetic filter (1) is suitable for filtering the condensate water once by magnetic adsorption to remove ferromagnetic impurities in the condensate water. The magnetic filter (1) has a water inlet and a water outlet. The water inlet of the magnetic filter (1) is suitable for connecting to a condensate water inlet pipe (2), and the water outlet of the magnetic filter (1) is suitable for discharging the condensate water that has been filtered once. The cartridge filter is suitable for performing secondary filtration on condensate water through a filter element. The cartridge filter has a water inlet and a water outlet. The water inlet of the cartridge filter is connected to the water outlet of the magnetic filter (1), and the water outlet of the cartridge filter is suitable for connecting to a condensate outlet pipe (3).

2. The condensate purification device according to claim 1, characterized in that: The filter element filter comprises a first filter element filter (4) and / or a second filter element filter (5), wherein the filtering accuracy of the second filter element filter (5) is higher than the filtering accuracy of the first filter element filter (4); When the filter cartridge filter comprises the first filter cartridge filter (4) and the second filter cartridge filter (5), the water inlet of the second filter cartridge filter (5) is connected to the water outlet of the first filter cartridge filter (4), the water inlet of the first filter cartridge filter (4) is connected to the water outlet of the magnetic filter (1), and the water outlet of the second filter cartridge filter (5) is suitable for connecting to the condensate outlet pipe (3).

3. The condensate purification device according to claim 2, characterized in that: The filter cartridge filter comprises the first filter cartridge filter (4) and the second filter cartridge filter (5), and at least two of each of the magnetic filter (1), the first filter cartridge filter (4) and the second filter cartridge filter (5) are provided; The condensate water purification device further comprises a first water inlet main pipe (6), a second water inlet main pipe (7), a third water inlet main pipe (8) and a water outlet main pipe (9), wherein the first water inlet main pipe (6) is connected to the condensate water inlet pipe (2), the water inlet of each magnetic filter (1) is connected to the first water inlet main pipe (6), the water outlet of each magnetic filter (1) is connected to the second water inlet main pipe (7), the water inlet of each first filter cartridge filter (4) is connected to the second water inlet main pipe (7), the water outlet of each first filter cartridge filter (4) is connected to the third water inlet main pipe (8), the water inlet of each second filter cartridge filter (5) is connected to the third water inlet main pipe (8), the water outlet of each second filter cartridge filter (5) is connected to the water outlet main pipe (9), and the water outlet main pipe (9) is connected to the condensate water outlet pipe (3).

4. The condensate purification device according to claim 3, characterized in that: Also includes a first control valve (10), a second control valve (11) and a third control valve (12); Each magnetic filter (1) is provided with a pair of the first control valves (10), and two of the first control valves (10) are provided at the water inlet and the water outlet of the magnetic filter (1), respectively; Each first filter cartridge filter (4) is provided with a pair of second control valves (11), and two of the second control valves (11) are provided at the water inlet and the water outlet of the first filter cartridge filter (4), respectively; Each second filter cartridge filter (5) is provided with a pair of the third control valves (12), and two of the third control valves (12) are provided at the water inlet and the water outlet of the second filter cartridge filter (5), respectively.

5. The condensate purification device according to claim 1, characterized in that: The magnetic filter (1) comprises a first shell (13), a first cover plate (14) and a magnetic adsorption mechanism, wherein the magnetic adsorption mechanism is arranged inside the first shell (13), and the first cover plate (14) is detachably connected to the first shell (13); The magnetic adsorption mechanism comprises a first fixing plate (15) and at least two magnetic rods (16), each of the magnetic rods (16) being arranged in parallel, and each end of the magnetic rod (16) being detachably connected to the first fixing plate (15), and the first fixing plate (15) being detachably connected to the first shell (13).

6. The condensate purification device according to claim 5, characterized in that: The water inlet is provided at the bottom of the first shell (13), the water outlet is provided on the first cover plate (14), a pair of first fixing plates (15) are provided, and the magnetic rods (16) are spaced apart and distributed between the pair of first fixing plates (15); A plurality of first water distribution holes (17) are provided on the first fixed plate (15), and the plurality of first water distribution holes (17) are distributed at intervals on the first fixed plate (15).

7. The condensate purification device according to claim 5, characterized in that: The magnetic adsorption mechanism is provided with a first handle (18); And / or, the magnetic rod (16) includes a shell and a permanent magnet, the shell is a columnar structure, a plurality of the permanent magnets are provided, the plurality of the permanent magnets are arranged inside the shell, and the plurality of the permanent magnets are arranged in sequence along the axial direction of the shell.

8. The condensate purification device according to claim 1, characterized in that: The filter element filter comprises a second housing (19), a second cover plate (20) and a filter element mechanism, wherein the filter element mechanism is arranged inside the second housing (19), and the second cover plate (20) is detachably connected to the second housing (19); The filter element mechanism comprises a filter element body (21) and a second fixing plate (22), wherein the filter element body (21) has a water outlet channel (23), and the water outlet channel (23) passes through the first end of the filter element body (21); the second fixing plate (22) is arranged at the first end of the filter element body (21), the second fixing plate (22) is detachably connected to the second housing (19), and the second fixing plate (22) is provided with a water outlet hole (24) opposite to the water outlet channel (23).

9. The condensate purification device according to claim 8, characterized in that: A second handle (25) is provided on the filter element mechanism; And / or, the filter element mechanism further comprises a third fixing plate (26), the third fixing plate (26) being arranged at the second end of the filter element body (21), the side of the third fixing plate (26) away from the filter element body (21) and the inner wall of the second shell (19) forming a buffer zone, the third fixing plate (26) being provided with a second water distribution hole (27), a plurality of the second water distribution holes (27) being provided, and the plurality of the second water distribution holes (27) being distributed at intervals between the inner wall of the second shell (19) and the outer wall of the filter element body (21).

10. The condensate purification device according to claim 4, characterized in that: It also includes a pressure detection mechanism (28), wherein the pressure detection mechanism (28) is suitable for detecting the pressure difference between the condensate water inlet pipe (2) and the condensate water outlet pipe (3); And / or, it also includes a support frame, and each of the magnetic filters (1), each of the first filter cartridge filters (4), each of the second filter cartridge filters (5), the first water inlet main pipe (6), the second water inlet main pipe (7), the third water inlet main pipe (8), the water outlet main pipe (9), each of the first control valves (10), each of the second control valves (11) and each of the third control valves (12) are all arranged on the support frame.

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