Water treatment device and condensed water fine treatment system

Abstract

The utility model belongs to the technical field of water treatment, and particularly relates to a water treatment device and a condensate polishing system. The device comprises a barrel, a water inlet pipeline, a moving mechanism, a permanent magnet iron removal mechanism, a water outlet pipeline, a circulating water receiving assembly, a backwashing water inlet pipeline, a backwashing water outlet pipeline, a separation assembly and a controllable switch, the water inlet pipeline is arranged on one side of the barrel, the moving mechanism and the permanent magnet iron removal mechanism are arranged in the barrel, the permanent magnet iron removal mechanism comprises a permanent magnet bar assembly and a fixed pipe assembly, and the end, facing the bottom of the barrel, of the moving mechanism is connected with the permanent magnet bar assembly; an outlet of the water outlet pipeline is communicated with an inlet of the circulating water receiving assembly, the backwashing water inlet pipeline is arranged on the outer side wall of the barrel, an inlet of the backwashing water inlet pipeline is communicated with an outlet of the circulating water receiving assembly through the controllable switch, the backwashing water outlet pipeline and the separation assembly are arranged at the bottom of the barrel, and the separation assembly is used for collecting impurities. Therefore, the device realizes the automation of the whole process of magnetizing adsorption, collection, backwashing and impurity separation of the water to be treated, and remarkably improves the water treatment efficiency, the economical efficiency and the resource utilization rate.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to a water treatment device and a condensate polishing system. Background Technology

[0002] Currently, the main pollutants in the condensate of thermal power plants are iron corrosion products and a small amount of salt. Iron corrosion products pose the greatest safety hazard to the steam-water system. Corrosion-related thermal system accidents occur frequently each year, some leading to major safety incidents. During unit overhauls or non-shutdown periods, rust accumulates in large quantities, requiring significant wastewater discharge during startup, resulting in substantial waste of heat and water resources and impacting unit commissioning time. During normal system operation, incomplete iron removal by water treatment equipment and technology leads to residual iron oxide in the condensate, accelerating system corrosion and accumulating in pressure drop zones, causing blockages in equipment such as steam traps.

[0003] In related technologies, treated water is discharged through an outlet pipe. During subsequent backwashing operations, external water needs to be injected into the drum, easily leading to water waste. Furthermore, at the end of the backwashing operation, iron impurities are discharged mixed with the rinsing water, requiring manual separation of these impurities, increasing the workload of staff. Utility Model Content

[0004] This application is made in view of the above-mentioned problems. This application provides a water treatment apparatus and a condensate polishing system.

[0005] According to one aspect of this application, a water treatment apparatus is provided, comprising:

[0006] The system comprises a cylinder, an inlet pipe, a moving mechanism, a permanent magnet iron removal mechanism, an outlet pipe, a circulating water receiving assembly, a backwash inlet pipe, a backwash outlet pipe, a separation assembly, and a controllable switch. The inlet pipe is located on one side of the cylinder. The moving mechanism and the permanent magnet iron removal mechanism are located inside the cylinder. The permanent magnet iron removal mechanism includes a permanent magnet rod assembly and a fixed pipe assembly fixed inside the cylinder. The end of the moving mechanism facing the bottom of the cylinder is connected to the permanent magnet rod assembly, used to drive the permanent magnet rod assembly to move along the axial direction of the cylinder, so that the iron removal mechanism... The permanent magnet rod assembly is detached from or extends into the fixed pipe assembly. The water outlet pipe is located on the side of the cylinder away from the water inlet pipe. The outlet of the water outlet pipe is connected to the inlet of the circulating water receiving assembly. The backwash water inlet pipe is located on the outer wall of the cylinder. The inlet of the backwash water inlet pipe is connected to the outlet of the circulating water receiving assembly through the controllable switch. The backwash water outlet pipe and the separation assembly are located at the bottom of the cylinder. The separation assembly is used to collect impurities in the backwash water discharged from the backwash water outlet pipe.

[0007] Compared with existing technologies, the circulating water receiving component in the water treatment device provided in this application can store treated qualified water as a backwash water source, which is beneficial to improving the utilization rate of water resources. Furthermore, the separation component can collect impurities in the backwash water discharged from the backwash outlet pipe, achieving the separation of iron-containing impurities from the backwash water and reducing the workload of workers. During the water treatment process, the moving mechanism drives the permanent magnet rod assembly to move downwards along the cylinder axis until the magnet is fully inserted into the fixed tube assembly, forming a closed magnetic circuit. The water to be treated enters the cylinder from the inlet pipe and flows downwards through the gaps in the fixed tube assembly to be magnetized and flocculated. The magnetic field in the inner wall of the fixed tube assembly adsorbs ferromagnetic impurities (such as Fe3O4 particles) in the water. The impurities adhere to the surface of the fixed tube assembly, and the qualified water after flocculation and adsorption treatment flows into the circulating water receiving component along the outlet pipe. At this time, the controllable switch is in the closed state. To perform a backwashing operation, the moving mechanism moves the permanent magnet rod assembly in the permanent magnet iron removal mechanism upwards until it detaches from the fixed tube assembly, causing the magnetism of the fixed tube assembly to disappear. At this point, the controllable switch is switched to the open state, allowing qualified water treated by flocculation and adsorption to flow from the outlet of the circulating water receiving assembly into the inlet of the backwash inlet pipe. This backwashing process removes iron-containing impurities adhering to the fixed tube assembly of the permanent magnet iron removal mechanism. The resulting backwash water carrying impurities enters the separation assembly through the backwash outlet pipe to separate the impurities from the backwash water. The separated impurities remain in the separation assembly, while the separated backwash water is discharged from the water treatment device along the separation assembly.

[0008] As can be seen, the water treatment device in this embodiment realizes full automation of the process from magnetization adsorption, collection, backwashing to impurity separation of the water to be treated, which significantly improves water treatment efficiency, economy and resource utilization.

[0009] According to another aspect of this application, a condensate polishing system is provided, comprising:

[0010] The condensate storage device, the controller, and the aforementioned water treatment device are included; the outlet of the condensate storage device is connected to the inlet pipe of the water treatment device, and the pressure sensor and alarm of the water treatment device are electrically connected to the controller.

[0011] Compared with the prior art, the beneficial effects of the condensate polishing system provided in this application are the same as those of the water treatment device described above, and will not be repeated here.

[0012] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0013] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0014] Figure 1 A schematic diagram of the structure of a water treatment device according to an embodiment of this application is shown;

[0015] Figure 2 A cross-sectional view of a water treatment apparatus according to an embodiment of this application is shown;

[0016] Figure 3 A side view of a water treatment apparatus according to an embodiment of this application is shown.

[0017] Figure 4 An embodiment of this application is shown. Figure 2 Enlarged view of point A in the middle;

[0018] Figure 5 A cross-sectional view of the housing of the detachable component according to an embodiment of this application is shown.

[0019] Figure Labels

[0020] 1-Cylinder; 2-Inlet pipe; 3-Moving mechanism; 301-Lifting plate; 302-Screw rod; 303-Gear motor; 304-Guide rod; 4-Permanent magnet iron removal mechanism; 401-Permanent magnet rod assembly; 402-Fixed pipe assembly; 403-First guide plate; 404-Second guide plate; 5-Outlet pipe; 6-Circulating water receiving assembly; 601-Side plate; 602-Water receiving tank; 6021-Drain hole; 603-Water pump; 604-Water supply pipe; 605-Connector; 7-Backwash inlet pipe; 8-Backwash outlet pipe; 9-Separation assembly; 901-Shell; 9011-Through hole; 902-Filter element; 903-Fixed element; 9031-Ear plate; 9032-Pressure plate; 9033-Fixing nut; 9034-Fixing screw; 904-Sealing element; and 10-Controllable switch. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application more apparent, exemplary embodiments according to this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0022] Currently, the main pollutants in the condensate of thermal power plants are iron corrosion products and a small amount of salt. Iron corrosion products pose the greatest safety hazard to the steam-water system. Corrosion-related thermal system accidents occur frequently each year, some leading to major safety incidents. During unit overhauls or non-shutdown periods, rust accumulates in large quantities, requiring significant wastewater discharge during startup, resulting in substantial waste of heat and water resources and impacting unit commissioning time. During normal system operation, incomplete iron removal by water treatment equipment and technology leads to residual iron oxide in the condensate, accelerating system corrosion and accumulating in pressure drop zones, causing blockages in equipment such as steam traps.

[0023] In related technologies, treated water is discharged through an outlet pipe. During subsequent backwashing operations, external water needs to be injected into the drum, easily leading to water waste. Furthermore, at the end of the backwashing operation, iron impurities are discharged mixed with the rinsing water, requiring manual separation of these impurities, increasing the workload of staff.

[0024] To address the aforementioned problems, this application provides a water treatment device that significantly improves water treatment efficiency, economy, and resource utilization. Figure 1 A schematic diagram of the structure of a water treatment device according to an embodiment of this application is shown. Figure 2 A cross-sectional view of a water treatment apparatus according to an embodiment of this application is shown. Figure 3 A side view of a water treatment apparatus according to an embodiment of this application is shown. Figures 1-3 As shown, the device includes a cylinder 1, an inlet pipe 2, a moving mechanism 3, a permanent magnet iron removal mechanism 4, an outlet pipe 5, a circulating water receiving assembly 6, a backwash inlet pipe 7, a backwash outlet pipe 8, a separation assembly 9, and a controllable switch 10. The inlet pipe 2 is located on one side of the cylinder 1. The moving mechanism 3 and the permanent magnet iron removal mechanism 4 are located inside the cylinder 1. The permanent magnet iron removal mechanism 4 includes a permanent magnet rod assembly 401 and a fixed pipe assembly 402 fixed inside the cylinder 1. The end of the moving mechanism 3 facing the bottom of the cylinder 1 is connected to the permanent magnet rod assembly 401, and is used to drive the permanent magnet rod assembly 401 along... The cylinder 1 moves axially, causing the permanent magnet rod assembly 401 to detach from or extend into the fixed pipe assembly 402. The water outlet pipe 5 is located on the side of the cylinder 1 away from the water inlet pipe 2. The outlet of the water outlet pipe 5 is connected to the inlet of the circulating water receiving assembly 6. The backwash water inlet pipe 7 is located on the outer wall of the cylinder 1. The inlet of the backwash water inlet pipe 7 is connected to the outlet of the circulating water receiving assembly 6 through the controllable switch 10. The backwash water outlet pipe 8 and the separation assembly 9 are located at the bottom of the cylinder 1. The separation assembly 9 is used to collect impurities in the backwash water discharged from the backwash water outlet pipe 8.

[0025] Understandably, the cylinder 1 provides axial space for the permanent magnet iron removal mechanism 4 to move, and the backwash water outlet pipe 8 at its bottom ensures that the backwash water is discharged centrally. The inlet pipe 2 is connected to one side of the cylinder 1. Figure 1 The inlet of the water inlet pipe 2 is higher than that of the permanent magnet iron removal mechanism 4, allowing water to be treated to be introduced into the cylinder 1 and pass through the permanent magnet iron removal mechanism 4 from top to bottom for iron removal. The permanent magnet iron removal mechanism 4 includes a permanent magnet rod assembly 401 that provides a magnetic field source to adsorb ferromagnetic impurities. The fixed tube assembly 402 of the permanent magnet iron removal mechanism 4 can form a closed magnetic circuit with the permanent magnet rod assembly 401. The moving mechanism 3 is connected to the permanent magnet rod assembly 401 at its end facing the bottom of the cylinder 1, and is used to drive the permanent magnet rod assembly 401 to move along the axial direction of the cylinder 1, so that the permanent magnet rod assembly 401 detaches from the fixed tube assembly 402 or extends into the fixed tube assembly 402, realizing the switching between the two working states of "adsorption" and "desorption". Among them, when in the adsorption state, the permanent magnet rod assembly 401 is inserted into the fixed tube assembly 402, forming a strong magnetic field to adsorb impurities. When in the desorption state, the permanent magnet rod assembly 401 detaches from the fixed tube assembly 402, the magnetic field dissipates, and impurities fall off due to gravity and water flow impact. The circulating water receiving assembly 6 can store treated qualified water as a backwash water source, which is beneficial to improving the utilization rate of water resources. In addition, this application may also open vent holes on the cylinder as needed, which is not limited here.

[0026] In practice, the moving mechanism 3 drives the permanent magnet rod assembly 401 to move downwards along the axis of the cylinder 1 until the magnet is fully inserted into the fixed pipe assembly 402, forming a closed magnetic circuit. The water to be treated enters the cylinder 1 from the inlet pipe 2 and flows downwards through the gap of the fixed pipe assembly 402 to be magnetized and flocculated. The magnetic field in the inner wall of the fixed pipe assembly 402 adsorbs ferromagnetic impurities (such as Fe3O4 particles) in the water. The impurities adhere to the surface of the fixed pipe assembly 402. The qualified water after flocculation and adsorption treatment flows into the circulating water receiving assembly 6 along the outlet pipe 5. At this time, the controllable switch 10 is in the closed state. If a reverse flushing operation is to be performed, the moving mechanism 3 drives the permanent magnet rod assembly 401 in the permanent magnet iron removal mechanism 4 to move upwards until the permanent magnet rod assembly 401 disengages from the fixed pipe assembly 402, causing the magnetism of the fixed pipe assembly 402 to disappear. At this time, the controllable switch 10 is switched to the open state, and the qualified water after flocculation and adsorption treatment flows from the outlet of the circulating water receiving component 6 into the inlet of the backwash water inlet pipe 7 to backwash the iron-containing impurities adhering to the fixed pipe component 402 of the permanent magnet iron removal mechanism 4. The backwash water carrying the impurities is then introduced into the separation component 9 through the backwash water outlet pipe 8 to separate the impurities and the backwash water. The separated impurities are retained in the separation component 9, and the separated backwash water is discharged from the water treatment device along the separation component 9.

[0027] As can be seen, the water treatment device in this embodiment realizes full automation of the process from magnetization adsorption, collection, backwashing to impurity separation of the water to be treated, which significantly improves water treatment efficiency, economy and resource utilization.

[0028] For example, the moving mechanism 3 in this embodiment includes a lifting plate 301, a lead screw 302, a reduction motor 303, and a guide rod 304. Its working principle is as follows: a reduction motor 303 is connected to the top of the cylinder 1, the output end of the reduction motor 303 is connected to the lead screw 302, the lifting plate 301 is connected to the outer wall of the lead screw 302, and the guide rod 304 is connected to the inner wall of the cylinder 1. A guide hole is provided on the lifting plate 301 at the position corresponding to the guide rod 304. When in use, the reduction motor 303 is started, and the operation of the reduction motor 303 drives the lead screw 302 to rotate. The rotation of the lead screw 302 drives the lifting plate 301 to move up and down inside the cylinder 1. During the movement of the lifting plate 301, the guide rod 304 and the guide hole can provide guidance for the movement of the lifting plate 301.

[0029] For example, the permanent magnet rod assembly 401 in this application embodiment includes a plurality of permanent magnet rods, and the fixing tube assembly 402 includes a plurality of fixing tubes, the number of which corresponds to the number of permanent magnet rods. The permanent magnet iron removal mechanism 4 also includes a first guide plate 403 and a second guide plate 404. The principle is as follows: multiple permanent magnet rods are connected below the lifting plate 301 in the moving mechanism 3. A fixed pipe is connected to the inner wall of the cylinder 1 and to the periphery of the permanent magnet rods. The first guide plate 403 is connected to the inner bottom of the cylinder 1 near the water inlet pipe 2. The second guide plate 404 is connected to the inner bottom of the cylinder 1 near the water outlet pipe 5. In use, the moving mechanism 3 drives the permanent magnet rods to be inserted into the fixed pipe. The water to be treated enters the cylinder 1 from the water inlet pipe 2. It is mixed by the guidance of the first guide plate 403 and the second guide plate 404. It is magnetized and flocculated by the permanent magnet rods in the cylinder 1. Iron impurities are adsorbed onto the fixed pipe. The qualified water flows into the circulating water receiving component 6 along the water outlet pipe 5.

[0030] It should be understood that the specific structure of the moving mechanism 3 and the permanent magnet iron removal mechanism 4 in the embodiments of this application can be referred to a condensate iron removal filtration device disclosed in Chinese Patent Application No. 202322383958.0.

[0031] Figure 4 An embodiment of this application is shown. Figure 2 Enlarged view of point A in the middle. Figure 5 A cross-sectional view of the housing of the detachable component according to an embodiment of this application is shown.

[0032] In one alternative approach, such as Figures 1-5As shown, the separation component 9 in this embodiment includes a housing 901, a filter element 902, and a fixing element 903. The housing 901 has an opening, and the filter element 902 is disposed on the inner wall of the housing 901. The housing 901 has multiple through holes 9011 for water molecules to pass through. The opening end of the housing 901 faces the outlet of the backwash water outlet pipe 8 and is connected to the bottom of the cylinder 1 through the fixing element 903. The housing 901, as a separation container, collects the backwash water carrying impurities discharged from the backwash water outlet pipe 8. Facing the outlet of the backwash water outlet pipe 8 and connected to the bottom of the cylinder 1 through the fixing element 903, it forms a closed channel, ensuring the directional flow of the backwash water carrying impurities. The multiple through holes 9011 on the housing 901 allow water molecules to pass through while intercepting impurities with a particle size larger than the pore size. The filter element 902 can physically intercept ferromagnetic impurities, achieving solid-liquid separation. The fastener 903 rigidly connects the housing 901 to the bottom of the cylinder 1, ensuring a reliable seal and preventing backwash water leakage. It should be understood that... Figure 4 and Figure 5 The length of the filter element 902 is merely an illustrative drawing. It is only necessary to ensure that the filter element 902 is laid on the inner wall of the housing 901, and there is no limitation here.

[0033] In practice, the backwash water carrying impurities flows out from the backwash outlet pipe 8 and enters the housing 901 axially along the opening of the housing 901. When the water flows through the filter element 902, the impurities are intercepted on the surface of the filter element 902, and the purified backwash water can flow into the external environment through the through hole 9011 of the housing 901.

[0034] For example, the pore diameter of the filter element 902 in this embodiment is smaller than the diameter of impurities in the backwash water. In this case, the impurities are intercepted and adhere to the surface of the filter element 902, forming a filter cake layer. The filter element 902 can be disassembled periodically for centralized cleaning. The filter element 902 in this embodiment can be either a filter cloth or other components capable of filtration; adjustments can be made according to actual conditions, and no limitation is made here.

[0035] For example, in this embodiment, the diameter of the through hole 9011 is smaller than the pore diameter of the filter element 902. In this case, impurities are first intercepted by the filter element 902, and the through hole 9011 only serves as a water flow channel and does not participate in filtration.

[0036] Exemplarily, the separation component 9 in this embodiment further includes multiple seals 904, each seal 904 being detachably connected to a through hole 9011. When the seal 904 is connected to the through hole 9011, impurities are intercepted on the surface of the filter element 902, and backwash water flows into the housing 901 through the pores of the filter element 902. When it is necessary to remove the backwash water, a collection container is placed under the through hole 9011, and then the seal 904 is removed from inside the through hole 9011. The backwash water inside the housing 901 is injected into the collection container through the through hole 9011, facilitating the collection of backwash water. Similarly, at this time, the filter element 902 can be removed and replaced.

[0037] For example, the filter element 902 in this embodiment is a magnetic filter cotton with a pore diameter of less than or equal to 10 μm. The 10 μm pores can intercept impurity particles ≥10 μm, and the permanent magnet particles in the magnetic filter cotton can generate a local magnetic field to adsorb micron-sized ferromagnetic impurities, thereby better achieving the filtration function.

[0038] For example, such as Figure 3 As shown, the fixing member 903 in this embodiment includes an ear plate 9031, a pressure plate 9032, a fixing nut 9033, and a fixing screw 9034. The ear plates 9031 are connected to both sides of one end of the housing 901. The fixing screw 9034 is connected to the lower part of the cylinder 1 and to one side of the ear plate 9031. The pressure plate 9032 is sleeved on the outer side wall of the fixing screw 9034. The fixing nut 9033 is connected to the outer side wall of the fixing screw 9034 and to the side of the pressure plate 9032 away from the ear plate 9031.

[0039] In practice, the shell 901 is moved to fit against the bottom wall of the cylinder 1, and the ear plate 9031 fits against the bottom wall of the cylinder 1. Then, the pressure plate 9032 is rotated and moved to fit against the side wall of the ear plate 9031. Then, the fixing nut 9033 is rotated and moved along the fixing screw 9034. After the fixing nut 9033 fits against the side wall of the pressure plate 9032, the rotation of the fixing nut 9033 is stopped. Under the action of the pressure plate 9032, the ear plate 9031 can be pressed and fixed, thereby limiting and fixing the shell 901.

[0040] In one alternative embodiment, the circulating water receiving assembly 6 in this application includes a side plate 601, a water receiving tank 602, a water pump 603, a water supply pipe 604, and a connector 605. The side plate 601 is located on the outer wall of the cylinder 1 and below the water outlet pipe 5. The water receiving tank 602 is located on the side plate 601 and is connected to the water outlet pipe 5. The water pump 603 is located inside the water receiving tank 602. The inlet of the water supply pipe 604 is connected to the water pump 603. The controllable switch 10 is located on the water supply pipe 604. The outlet of the water supply pipe 604 is connected to the inlet of the backwash water inlet pipe 7 through the connector 605.

[0041] For example, in this embodiment of the application, the water receiving tank 602 is provided with a plurality of drain holes 6021 at the end away from the side plate 601, and the drain holes 6021 are arranged in an array along the extension direction of the tank body of the water receiving tank 602. When the water receiving tank 602 collects too much qualified water, the excess qualified water falls into the external environment through the drain holes 6021, thus preventing the water receiving tank 602 from collecting too much qualified water.

[0042] For example, the water treatment device in this application embodiment also includes a pressure sensor, which is located at the bottom of the water receiving tank. It should be understood that the pressure sensor is omitted in the figures for clearer illustration of the connections between other components.

[0043] In practice, when the pressure sensor detects that the pressure value of the water tank or the pressure difference from the initial state is higher than expected, the backwashing stage can be initiated. At this time, the moving mechanism drives the permanent magnet rod assembly in the permanent magnet iron removal mechanism to move upward until the permanent magnet rod assembly detaches from the fixed pipe assembly, causing the magnetism of the fixed pipe assembly to disappear. The controllable switch is switched to the open state, the water pump is started, and qualified water from the water tank is injected into the inlet of the backwash inlet pipe in conjunction with the water supply pipe and connectors. Then, it enters the cylinder and performs a backwashing operation on the components of the permanent magnet iron removal mechanism at the bottom of the cylinder, causing the iron-containing impurities adhering to the fixed pipe assembly to be washed off by the backwash water. At this time, the backwash water carrying impurities is discharged from the backwash outlet pipe. After the backwash water carrying impurities is discharged from the backwash outlet pipe, it falls into the shell and then falls into the shell through the pores on the filter element. The iron-containing impurities remain on the filter element, making it easy to separate and collect the iron-containing impurities and backwash water, thus completing the water treatment operation.

[0044] This application also provides a condensate polishing system, which significantly improves condensate treatment efficiency, economy, and resource utilization. The system includes a condensate storage device, a controller, and the aforementioned water treatment device; the outlet of the condensate storage device is connected to the inlet pipe of the water treatment device, and the pressure sensor and controllable switch included in the water treatment device are electrically connected to the controller.

[0045] In practice, condensate can be fed from the outlet of the condensate storage device into the inlet pipe of the water treatment device for treatment. Before the backwashing operation, the controller controls the controllable switch to be in the closed state. As qualified water gradually flows into the receiving tank, the pressure sensor transmits the detected pressure value to the controller. If the controller determines that the pressure value exceeds the expected range, it controls the controllable switch to be in the open state to perform the backwashing operation.

[0046] The above description is merely a specific embodiment of this application. Obviously, various modifications and combinations can be made without departing from the spirit and scope of this application. Accordingly, this specification and accompanying drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, the intent of this application includes these modifications and modifications. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the stated claims.

[0047] It should also be noted that in the apparatus and method of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0048] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0049] The above description has been given for illustrative and descriptive purposes. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although several exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A water treatment device, characterized in that, include: The system comprises a cylinder, an inlet pipe, a moving mechanism, a permanent magnet iron removal mechanism, an outlet pipe, a circulating water receiving assembly, a backwash inlet pipe, a backwash outlet pipe, a separation assembly, and a controllable switch. The inlet pipe is located on one side of the cylinder. The moving mechanism and the permanent magnet iron removal mechanism are located inside the cylinder. The permanent magnet iron removal mechanism includes a permanent magnet rod assembly and a fixed pipe assembly fixed inside the cylinder. The end of the moving mechanism facing the bottom of the cylinder is connected to the permanent magnet rod assembly, used to drive the permanent magnet rod assembly to move along the axial direction of the cylinder, so that the iron removal mechanism... The permanent magnet rod assembly is detached from or extends into the fixed pipe assembly. The water outlet pipe is located on the side of the cylinder away from the water inlet pipe. The outlet of the water outlet pipe is connected to the inlet of the circulating water receiving assembly. The backwash water inlet pipe is located on the outer wall of the cylinder. The inlet of the backwash water inlet pipe is connected to the outlet of the circulating water receiving assembly through the controllable switch. The backwash water outlet pipe and the separation assembly are located at the bottom of the cylinder. The separation assembly is used to collect impurities in the backwash water discharged from the backwash water outlet pipe.

2. The water treatment device according to claim 1, characterized in that, The separation assembly includes a housing, a filter element, and a fixing element. The housing has an opening, the filter element is disposed on the inner wall of the housing, and the housing has multiple through holes for water molecules to pass through. The opening end of the housing faces the outlet of the backwash water pipe and is connected to the bottom of the cylinder through the fixing element.

3. The water treatment apparatus according to claim 2, characterized in that, The pore diameter of the filter element is smaller than the diameter of the impurities in the backwash water.

4. The water treatment apparatus according to claim 2, characterized in that, The diameter of the through hole is larger than the pore diameter of the filter element.

5. The water treatment apparatus according to any one of claims 2 to 4, characterized in that, The separation assembly also includes multiple seals, each of which is detachably connected to each of the through holes.

6. The water treatment apparatus according to claim 5, characterized in that, The filter element is a magnetic filter cotton, and the pore diameter of the magnetic filter cotton is less than or equal to 10 μm.

7. The water treatment apparatus according to claim 1, characterized in that, The circulating water receiving assembly includes a side plate, a water receiving tank, a water pump, a water delivery pipe, and a connector. The side plate is located on the outer wall of the cylinder and below the water outlet pipe. The water receiving tank is located on the side plate, and the inlet of the water receiving tank is connected to the water outlet pipe. The water pump is located inside the water receiving tank, and the inlet of the water delivery pipe is connected to the water pump. The controllable switch is located on the water delivery pipe, and the outlet of the water delivery pipe is connected to the inlet of the backwash water inlet pipe through the connector.

8. The water treatment apparatus according to claim 7, characterized in that, The water receiving tank has multiple drain holes at the end away from the side plate, and each drain hole is arranged in an array along the extension direction of the tank body.

9. The water treatment apparatus according to claim 7, characterized in that, The water treatment device also includes a pressure sensor, which is located at the bottom of the water receiving tank.

10. A condensate polishing system, characterized in that, include: A condensate storage device, a controller, and a water treatment device according to any one of claims 1 to 9; the outlet of the condensate storage device is connected to the inlet pipe included in the water treatment device, and the pressure sensor and controllable switch included in the water treatment device are electrically connected to the controller.

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