Condensed water purification device

Abstract

The invention 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 present invention relates to the technical field of purification devices, and in particular to a condensate water purification device. Background Art

[0002] Condensate refers to 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 cause 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 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, and may even cause problems such as shortened regeneration cycle of desalination equipment and resin pollution.

[0003] The particle size of corrosion products in condensate water is mostly between 1 and 100 microns, with about 60% of corrosion products above 10 microns and about 80% of corrosion products above 5 microns. In related technologies, tubular filters are used to filter condensate water. Filter elements generally have two types of gaps: 10 microns and 5 microns. A 10-micron filter element is used in the startup phase, but after normal operation, in order to ensure the quality of the outlet water, the filter element needs to be replaced with a 5-micron or smaller filter element. Due to the small gap between the filter elements, it is easy to be blocked by dirt, the service life of the filter element is generally short, the replacement cycle of the filter element is short, and the later maintenance cost is high.

[0004] Therefore, how to solve the problem 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 technical personnel in this field. Summary of the invention

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

[0006] The present invention provides a condensate water purification device, comprising a magnetic filter and a filter element filter; The magnetic filter is suitable for filtering the condensed water once by magnetic adsorption to remove ferromagnetic impurities in the condensed 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 condensed water inlet pipe, and the water outlet of the magnetic filter is suitable for discharging the condensed water after the once filtration. The cartridge filter is suitable for secondary filtering of condensate water through a filter cartridge, and 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, and the water outlet of the cartridge filter is suitable for connecting to a condensate outlet pipe.

[0007] According to a condensate purification device provided by the present invention, the filter cartridge filter comprises 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; 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.

[0008] According to a condensate purification device provided by the present invention, the cartridge filter comprises the first cartridge filter and the second cartridge filter, and at least two of the magnetic filter, the first cartridge filter and the second cartridge filter are provided; 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 of the magnetic filters is connected to the first water inlet main pipe, the water outlet of each of the magnetic filters is connected to the second water inlet main pipe, the water inlet of each of the first filter cartridge filters is connected to the second water inlet main pipe, the water outlet of each of the first filter cartridge filters is connected to the third water inlet main pipe, the water inlet of each of the second filter cartridge filters is connected to the third water inlet main pipe, the water outlet of each of the second filter cartridge filters is connected to the water outlet main pipe, and the water outlet main pipe is connected to the condensate water outlet pipe.

[0009] A condensate purification device according to the present invention further includes a first control valve, a second control valve and a third control valve; A pair of the first control valves is correspondingly arranged for each of the magnetic filters, and two of the first control valves are respectively arranged at the water inlet and the water outlet of the magnetic filter; A pair of the second control valves is correspondingly arranged for each of the first filter cartridge filters, and two of the second control valves are respectively arranged at the water inlet and the water outlet of the first filter cartridge filter; A pair of the third control valves is correspondingly arranged for each of the second filter cartridge filters, and two of the third control valves are respectively arranged at the water inlet and the water outlet of the second filter cartridge filter.

[0010] According to a condensate purification device provided by the present invention, the magnetic filter comprises 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; The magnetic adsorption mechanism includes a first fixing plate and at least two magnetic bars, the magnetic bars are arranged in parallel, the ends of the magnetic bars are detachably connected to the first fixing plate, and the first fixing plate is detachably connected to the first shell.

[0011] According to a condensate water 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 each of the magnetic bars is distributed at intervals between the pair of first fixing plates; 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.

[0012] According to a condensate purification device provided by the present invention, a first handle is provided on the magnetic adsorption mechanism; And / or, the magnetic rod includes a shell and a permanent magnet, the shell is a columnar structure, and 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.

[0013] 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; 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.

[0014] According to a condensate purification device provided by the present invention, a second handle is provided on the filter element mechanism; And / or, the filter element mechanism also includes a third fixing plate, the third fixing plate is arranged at the second end of the filter element body, 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, the third fixing plate is provided with a second water distribution hole, and the second water distribution holes are provided in plurality, and the plurality of 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.

[0015] A condensate purification device according to the present invention further comprises a pressure detection mechanism, wherein the pressure detection mechanism is suitable for detecting the pressure difference between the condensate inlet pipe and the condensate outlet pipe; 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.

[0016] The condensate purification device provided by the present invention comprises a magnetic filter and a filter 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 filter cartridge filter has a water inlet and a water outlet, and the water inlet of the filter cartridge filter is connected to the water outlet of the magnetic filter, and the water outlet of the filter cartridge filter is used to connect to the condensate outlet pipe. The magnetic filter is arranged at the upstream position of the filter cartridge filter, and when condensate is purified, the condensate first passes through the magnetic filter and then passes through the filter cartridge filter. The magnetic filter is used to filter the condensate once 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 been filtered once, so that the condensate that has been filtered once enters the filter cartridge filter. The filter cartridge filter is used to filter the condensate twice through the filter cartridge to further filter out impurities other than ferromagnetic impurities in the condensate. With such arrangement, 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 filter cartridge filter in sequence. Most of the impurities in the condensate are ferromagnetic substances, and the magnetic filter 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 will pass through the filter cartridge filter, thereby reducing the clogging of the filter cartridge filter and extending the service life of the filter cartridge filter. In addition, the ferromagnetic impurities filtered out by the magnetic filter are only adsorbed on the surface of the magnetic mechanism in the magnetic filter by magnetic force, and the adsorption and filtration process will not damage the magnetic mechanism. After the impurities in the magnetic filter are removed, the magnetic filter can continue to be used, which is convenient for maintenance, and there is no need to repair or replace the parts in the magnetic filter. The maintenance cost is low, which solves the problem of short service life and high later maintenance cost of the filter cartridge of the condensate purification device in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces 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 creative work.

[0018] Figure 1 It is a structural schematic diagram of a condensate water purification device provided by the present invention.

[0019] Figure 2 It is a structural schematic diagram of the magnetic filter provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the distribution of the first water distribution holes and the magnetic rods on the first fixed plate provided by the present invention.

[0021] Figure 4 It is a structural schematic diagram of the filter element filter provided by the present invention.

[0022] Reference numerals: 1. Magnetic filter; 2. Condensate inlet pipe; 3. Condensate outlet pipe; 4. First filter element filter; 5. Second filter element filter; 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 shell; 14. First cover plate; 15. First fixing plate; 16. Magnetic rod; 17. First water distribution hole; 18. First handle; 19. Second shell; 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

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Combine the following 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.

[0025] like Figures 1 to 4As shown, the condensate purification device provided by the embodiment of the present invention includes a magnetic filter 1 and a filter element filter.

[0026] 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 water inlet pipe 2. The filter element filter has a water inlet and a water outlet, and the water inlet of the filter element filter is connected to the water outlet of the magnetic filter 1, and the water outlet of the filter element filter is used to connect to the condensate water outlet pipe 3.

[0027] 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.

[0028] The magnetic filter 1 is used to filter the condensed water once by magnetic adsorption to remove the ferromagnetic impurities in the condensed water. The water outlet of the magnetic filter 1 is used to discharge the condensed water after the primary filtration, so that the condensed water after the primary filtration enters the filter element filter.

[0029] The filter element filter is used to perform secondary filtration on the condensate water through the filter element to further filter out impurities other than ferromagnetic impurities in the condensate water.

[0030] The applicant has found through extensive research that the pollution sources of condensate water are mainly caused by raw water, system leakage, and system corrosion, among which the pollution caused by system corrosion generally accounts for more than 80%. The corrosion products of thermal systems are mainly generated by the corrosion of iron and copper, most of which are ferromagnetic substances.

[0031] 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 cartridge 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 will pass through the filter cartridge filter, thereby reducing the clogging of the filter cartridge filter and extending the service life of the filter cartridge filter. In addition, the ferromagnetic impurities filtered out by the magnetic filter 1 are only adsorbed on the surface of the magnetic mechanism in the magnetic filter 1 by magnetic force, and the magnetic adsorption filtration process will not damage the magnetic mechanism. 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 and replace the parts in the magnetic filter 1, and the maintenance cost is low, which solves the problem of short service life and high later maintenance cost of the filter cartridge of the condensate purification device in the related art.

[0032] In the embodiment of the present invention, the filter cartridge filter includes a first filter cartridge filter 4 and / or a second filter cartridge filter 5 , wherein the filtering accuracy of the second filter cartridge filter 5 is higher than the filtering accuracy of the first filter cartridge filter 4 .

[0033] In some scenarios where the filtering requirements for condensed water are relatively low, the magnetic filter 1 and the first filter cartridge filter 4 can be used for filtering. In some scenarios where the filtering requirements for condensed water are relatively high, the magnetic filter 1 and the second filter cartridge filter 5 can be used for filtering. In some scenarios where the filtering requirements for condensed water are extremely high, the magnetic filter 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 can be used for filtering.

[0034] 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.

[0035] That is to say, the first filter cartridge filter 4 is arranged at the upstream position of the second filter cartridge filter 5. After the ferromagnetic impurities in the condensate water are filtered out by the magnetic filter 1, the first filter cartridge filter 4 with a lower filtering accuracy is first used to filter out the impurities with larger particles in the condensate water, and then the second filter cartridge filter 5 with a higher filtering accuracy is used to filter out the impurities with smaller particles in the condensate water. The second filter cartridge filter 5 can improve the filtering effect of the condensate water, and the first filter cartridge filter 4 can also reduce the clogging of the second filter cartridge filter 5 by the impurities with larger particles, which can extend the service life of the filter cartridge of the second filter cartridge filter 5 and extend the replacement cycle of the filter cartridge of the second filter cartridge filter 5.

[0036] In this embodiment, the filter cartridge filter includes a first filter cartridge filter 4 and a second filter cartridge filter 5, and at least two of the magnetic filter 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 are provided. At this time, the condensate purification device also includes a first water inlet pipe 6, a second water inlet pipe 7, a third water inlet pipe 8 and a water outlet pipe 9.

[0037] The first water inlet pipe 6 is connected to the condensate water inlet pipe 2, and the water inlet of each magnetic filter 1 is connected to the first water inlet pipe 6. The condensate in the condensate water inlet pipe 2 is first collected in the first water inlet pipe 6, and then distributed to each magnetic filter 1, so that the condensate water can be evenly distributed to each magnetic filter 1. Specifically, the condensate water inlet pipe 2 can be connected to the middle position of the first water inlet pipe 6 in the axial direction, and the water inlet of each magnetic filter 1 can be connected to different positions of the first water inlet pipe 6 in the axial direction.

[0038] 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 filter cartridge filter 4 is connected to the second water inlet main pipe 7. The condensed water filtered by each magnetic filter 1 is first collected in the second water inlet main pipe 7, and then distributed to each first filter cartridge filter 4, so that the condensed water can be evenly distributed to each first filter cartridge filter 4, and the water quality of the condensed water entering each first filter cartridge filter 4 has a high consistency. Specifically, the water outlet of each magnetic filter 1 can be connected to different positions of the axial direction of the second water inlet main pipe 7, and the water inlet of each first filter cartridge filter 4 can be connected to different positions of the axial direction of the second water inlet main pipe 7.

[0039] The water outlets of each first filter cartridge filter 4 are 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, and the water outlet of each second filter cartridge filter 5 is connected to the water outlet main pipe 9, which is connected to the condensate outlet pipe 3. The condensate filtered by each first filter cartridge filter 4 is first collected in the third water inlet main pipe 8, and then distributed to each second filter cartridge filter 5, so that the condensate can be evenly distributed to each second filter cartridge filter 5, and the water quality of the condensate entering each second filter cartridge filter 5 has a high consistency. Specifically, the water outlets of each first filter cartridge filter 4 can be connected to different positions of the axial direction of the third water inlet main pipe 8, the water inlets of each second filter cartridge filter 5 can be connected to different positions of the axial direction of the third water inlet main pipe 8, the water outlets of each second filter cartridge filter 5 can be connected to different positions of the axial direction of the water outlet main pipe 9, and the condensate outlet pipe 3 can be connected to the middle position of the axial direction of the water outlet main pipe 9.

[0040] In this way, the condensed water in the first water inlet pipe 6 can enter the interior of any magnetic filter 1, the condensed water output by any magnetic filter 1 can enter any first filter cartridge filter 4, the condensed water output by any first filter cartridge filter 4 can enter any second filter cartridge filter 5, and the condensed water output by any second filter cartridge filter 5 can enter the water outlet pipe 9. That is to say, when part of the magnetic filter 1, part of the first filter cartridge filter 4 and part of the second filter cartridge filter 5 are blocked by dirt and cannot continue filtering, the condensed water purification device provided in this embodiment can still continue to filter the condensed water by relying on the remaining magnetic filters 1, the first filter cartridge filter 4 and the second filter cartridge filter 5.

[0041] Each magnetic filter 1, first filter cartridge filter 4 and second filter cartridge filter 5 in this embodiment are separate devices, which are connected together by pipelines. The relative positions of the magnetic filter 1, first filter cartridge filter 4 and second filter cartridge filter 5 can be determined according to the on-site space, which is highly flexible. For an on-site space with a large height dimension and a small footprint, the magnetic filter 1, first filter cartridge filter 4 and second filter cartridge filter 5 can be distributed in the height direction. For an on-site space with a small height dimension and a large footprint, the magnetic filter 1, first filter cartridge filter 4 and second filter cartridge filter 5 can be distributed in the horizontal direction.

[0042] 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.

[0043] A pair of first control valves 10 are provided corresponding to each magnetic filter 1, and two of the pair of first control valves 10 are respectively provided at the water inlet and the water outlet of the magnetic filter 1, and the opening and closing of the water inlet and the water outlet of the corresponding magnetic filter 1 can be controlled by the pair of first control valves 10. During the operation of the condensate water purification device, the first control valves 10 corresponding to one of the magnetic filters 1 or part of the magnetic filters 1 are controlled to be in the cut-off state, so that the corresponding magnetic filter 1 can be disconnected from the first water inlet pipe 6 and the second water inlet pipe 7. At this time, it is suitable to clean and repair the corresponding magnetic filter 1, and the cleaning and repair process does not affect the operation of the remaining magnetic filters 1 and the filter element filter, thereby realizing online cleaning.

[0044] A pair of second control valves 11 are provided corresponding to each first cartridge filter 4, and two of the pair of second control valves 11 are provided at the water inlet and the water outlet of the first cartridge filter 4, respectively. The opening and closing of the water inlet and the 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, the second control valves 11 corresponding to one of the first cartridge filters 4 or part of the first cartridge filters 4 are controlled to be in the cut-off state, so that the corresponding first cartridge filter 4 can be disconnected from the second water inlet pipe 7 and the third water inlet pipe 8. At this time, it is suitable to clean and repair the corresponding first cartridge filter 4, and the cleaning and repair process does not affect the operation of the remaining magnetic filters 1 and the cartridge filters, thereby realizing online cleaning.

[0045] A pair of third control valves 12 are provided corresponding to each second cartridge filter 5, and two of the pair of third control valves 12 are respectively provided at the water inlet and the water outlet of the second cartridge filter 5, and the opening and closing of the water inlet and the 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 water 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 to clean and repair the corresponding second cartridge filter 5, and the cleaning and repair process does not affect the operation of the remaining magnetic filters 1 and the cartridge filters, thereby realizing online cleaning.

[0046] In the embodiment of the present invention, the magnetic filter 1 includes a first shell 13, a first cover plate 14 and a magnetic adsorption mechanism. 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. When the magnetic adsorption mechanism needs to be cleaned, the first cover plate 14 is removed from the first shell 13, and the magnetic adsorption mechanism can be taken out from the first shell 13, which is convenient for cleaning the magnetic adsorption mechanism.

[0047] For the detachable connection between the first cover plate 14 and the first shell 13 , a flange plate may be provided on the first shell 13 , and the first cover plate 14 and the first shell 13 may be connected together by bolts and nuts.

[0048] 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.

[0049] 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 .

[0050] For the detachable connection between the magnetic rod 16 and the first fixing plate 15 , a threaded hole may be provided at the end of the magnetic rod 16 , a connecting bolt may be used to penetrate the first fixing plate 15 , and the connecting bolt may be threadedly connected to the threaded hole of the magnetic rod 16 .

[0051] 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 is connected to the mounting plate by bolts and nuts.

[0052] In this embodiment, the water inlet of the magnetic filter 1 is arranged at the bottom of the first shell 13, and the water outlet of the magnetic filter 1 is arranged at the first cover plate 14. The magnetic adsorption mechanism is arranged between the bottom of the first shell 13 and the first cover plate 14, and the axial directions of the magnetic bars 16 are parallel to each other and extend from the first cover plate 14 to the bottom of the first shell 13.

[0053] A pair of first fixing plates 15 are provided, and the pair of first fixing plates 15 are parallel to each other and spaced apart. Each magnetic bar 16 is provided between the pair of first fixing plates 15 and spaced apart between the pair of first fixing plates 15. One end of the magnetic bar 16 is connected to one of the first fixing plates 15, and the other end of the magnetic bar 16 is connected to the other first fixing plate 15.

[0054] A gap may be provided between the edge of the first fixing plate 15 and the inner wall of the first shell 13, and after the condensed water enters the magnetic filter 1, it may flow to the first cover plate 14 through the gap. In order to further evenly distribute the condensed water in the first shell 13, a first water distribution hole 17 may be provided on the first fixing plate 15, and a plurality of first water distribution holes 17 are provided, and the plurality of first water distribution holes 17 are distributed at intervals on the first fixing plate 15.

[0055] 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 , and 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 .

[0056] 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 are arranged in sequence along the axial direction of the shell.

[0057] In the embodiment of the present invention, the first filter cartridge filter 4 and the second filter cartridge filter 5 have similar structures, and both include a second housing 19 , a second cover plate 20 and a filter cartridge mechanism.

[0058] 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. When the filter element mechanism needs to be cleaned or replaced, the second cover plate 20 is removed from the second housing 19, and the filter element mechanism can be taken out from the second housing 19, which is convenient for cleaning the filter element mechanism.

[0059] 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 by bolts and nuts.

[0060] 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.

[0061] In the 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, and the water outlet channel 23 runs 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, and a water outlet hole 24 is arranged on the second fixing plate 22, which is 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 from the water outlet hole 24, and impurities in the condensate are intercepted outside the filter element body 21.

[0062] 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 is connected to the mounting plate by bolts and nuts.

[0063] In this embodiment, the water inlet of the filter cartridge filter is arranged at the bottom of the second shell 19 , the water outlet of the filter cartridge filter is arranged at the second cover plate 20 , and the filter cartridge mechanism is arranged between the bottom of the second shell 19 and the second cover plate 20 .

[0064] The filter element mechanism also includes a third fixing plate 26, which is disposed at the second end of the filter element body 21, and there is a gap between the third fixing plate 26 and the bottom of the second housing 19, and there is a gap between the side of the third fixing plate 26 away from the filter element body 21 and the bottom wall of the second housing 19, so as to form a buffer area on the side of the third fixing plate 26 away from the filter element body 21. The third fixing plate 26 is provided with a second water distribution hole 27, and there are a plurality of second water distribution holes 27, which are spaced and distributed between the inner wall of the second housing 19 and the outer wall of the filter element body 21.

[0065] 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 hole 27 , and then enter the water outlet channel 23 through the filtering effect of the filter element body 21 .

[0066] The provision of the buffer area and the second water distribution holes 27 can make the condensed water evenly distributed 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.

[0067] In an embodiment of the present invention, the condensate water purification device also includes a pressure detection mechanism 28, which can detect the pressure difference between the condensate water inlet pipe 2 and the condensate water outlet pipe 3, and determine the dirt blockage condition inside the condensate water purification device based on the pressure difference, so as to clean and maintain the magnetic filter 1 and the filter element filter as needed.

[0068] Specifically, when the pressure difference between the condensate inlet pipe 2 and the condensate outlet pipe 3 is greater than or equal to the first preset value, each magnetic filter 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 can be cleaned and replaced one by one, and when one of the magnetic filters 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 is cleaned and replaced, the others all work normally. When the pressure difference between the condensate inlet pipe 2 and the condensate outlet pipe 3 is greater than or equal to the second preset value, the condensate purification device is stopped, and after all the magnetic filters 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 are cleaned and replaced, the condensate purification device is restarted.

[0069] 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.

[0070] 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 respectively connected to the condensate water inlet pipe 2 and the condensate water outlet pipe 3.

[0071] 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.

[0072] In an embodiment of the present invention, 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.

[0073] In a specific embodiment, the filtration accuracy of the filter body 21 of the first filter cartridge filter 4 can be set to 5 microns, and the filtration accuracy of the filter body 21 of the second filter cartridge filter 5 can be set to 1 micron. The condensate water purification device provided in the embodiment of the present invention adopts three-stage filtration, and the ferromagnetic impurities in the condensate water are filtered out by the magnetic filter 1, the impurities larger than 5 microns in the condensate water are filtered out by the first filter cartridge filter 4, and the impurities larger than 1 micron in the condensate water are filtered out by the second filter cartridge filter 5. The effluent water quality of the condensate water purification device is improved, and the service life of the filter body 21 of the first filter cartridge filter 4 and the second filter cartridge filter 5 is also extended.

[0074] 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.

[0075] 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.

[0076] In addition, the magnetic filter 1, the first cartridge filter 4 and the second cartridge filter 5 are designed in a standardized manner, 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 to be arranged in parallel can be determined according to the total water treatment capacity.

[0077] That is to say, the condensate purification device provided by the embodiment of the present invention includes a plurality of standardized small flow filters. Compared with the related art that directly sets a large-diameter, large-flow non-standard filter according to the total treated water volume, the condensate purification device provided by the embodiment of the present invention has higher flexibility, stronger adaptability to the on-site installation space, and is convenient for inspection and maintenance.

[0078] In the prior art, if the ferromagnetic impurity content in the condensate is too high, the purification device cannot meet the filtering requirements, and the condensate with too 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, so that the condensate with a ferromagnetic impurity content greater than 100 micrograms / liter cannot be recovered 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 setting a magnetic filter 1, the fouling of the filter element filter can be effectively reduced, and the limit of the ferromagnetic impurity content in the condensate can be increased to 3000 micrograms / liter. As long as the condensate with a ferromagnetic impurity content less than or equal to 3000 micrograms / liter can enter the condensate purification device provided by the embodiment of the present invention for filtration, which greatly reduces the discharge waste of condensate.

[0079] In addition, the magnetic filter 1, the first filter cartridge filter 4 and the second filter cartridge filter 5 can be designed with redundancy, and at least one redundancy can be designed for each of the magnetic filter 1, the first filter cartridge filter 4 and the second filter cartridge filter 5. When one of the magnetic filters 1 is cleaned or replaced, the operation of the remaining magnetic filters 1 can meet the use requirements. Similarly, when one of the first filter cartridge filters 4 is cleaned or replaced, the operation of the remaining first filter cartridge filters 4 can meet the use requirements; when one of the second filter cartridge filters 5 is cleaned or replaced, the operation of the remaining second filter cartridge filters 5 can meet the use requirements.

[0080] 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 embodiments of the present invention.

Claims

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

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

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

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 bars (16), wherein the magnetic bars (16) are arranged in parallel, and the ends of the magnetic bars (16) are detachably connected to the first fixing plate (15), and the first fixing plate (15) is 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 bars (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 fixing plate (15), and the plurality of first water distribution holes (17) are distributed at intervals on the first fixing 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) comprises 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 shell (19), a second cover plate (20) and a filter element mechanism, wherein the filter element mechanism is arranged inside the second shell (19), and the second cover plate (20) is detachably connected to the second shell (19); The filter element mechanism comprises a filter element body (21) and a second fixing plate (22), the filter element body (21) having a water outlet channel (23), the water outlet channel (23) penetrating the first end of the filter element body (21), the second fixing plate (22) being arranged at the first end of the filter element body (21), the second fixing plate (22) being detachably connected to the second shell (19), and the second fixing plate (22) being 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 body (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 arranged, and the plurality of the second water distribution holes (27) being distributed at intervals between the inner wall of the second shell body (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 comprises 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 supporting 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 supporting frame.

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