Water treatment system with continuous hardness removal device

Abstract

The present application relates to a kind of water treatment system and water hardness continuous removal device, raw water is entered into raw water chamber through raw water import, is filtered after being filtered by conductive filter screen, and the water production is entered into water production chamber, and the water production obtained is discharged outward through water production outlet;Conductive filter screen is electrolyzed in the process of electrification, and hydroxyl ion is generated on its surface, reacts with bicarbonate ion in raw water chamber to obtain carbonate ion, and carbonate ion combines with calcium magnesium ion to obtain carbonate precipitate on conductive filter screen, that is, the scaling component is removed from water in advance by ionization technology, without using any chemical agent.In addition, when scaling is formed, periodically control the work of scraping assembly, and the scaling attached to conductive filter screen is scraped off from conductive filter screen, to prevent scaling accumulation from affecting device operation, ensure normal water production, without adding or using any chemical agent, and without using a large amount of raw water in backwashing process, water hardness can be continuously removed, and the operating cost is relatively low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a water treatment system and a device for continuously removing hardness in water. BACKGROUND

[0002] Hardness in water refers to large-particle impurities and suspended solids in water, especially calcium ions, magnesium ions, etc. In order to reduce the hardness in water, thereby reducing the risk of pollution and scaling, and making the equipment have self-cleaning properties without maintenance, the current water treatment industry mainly uses scale inhibitors or softener processes to treat water hardness.

[0003] Among them, scale inhibitors belong to chemical agents, which need to be continuously and quantitatively added to raw water. Scale inhibitors do not remove calcium and magnesium ions in water, but through chelation, scale-forming cations (such as calcium ions, magnesium ions, etc.) are combined with chelating agents to form stable chelates, thereby preventing them from contacting scale-forming anions (such as CO3 2- , SO4 2- , PO4 3- and SiO3 2- , etc.), and reducing the probability of scaling. At the same time, in special industries (such as the pharmaceutical industry), it is difficult to verify the complex composition of scale inhibitors, and there is a certain risk in industry application.

[0004] In addition, the softener absorbs calcium, magnesium and other easily scaling ions in raw water by filling the resin inside, and when the adsorption resin is saturated, the softener needs to be regenerated. The regenerant is a saturated sodium chloride solution, and the filter needs to consume a large amount of raw water and sodium chloride during regeneration. A large amount of raw water is required during backwashing, and the discharge water during regeneration is high-salinity wastewater, which causes a certain pressure on the environment, and the long-term operation cost is high. SUMMARY

[0005] Therefore, it is necessary to overcome the defects of the prior art and provide a water treatment system and a device for continuously removing hardness in water, which can continuously remove hardness in water without adding or using any chemical agent, and has relatively low operating cost.

[0006] The technical scheme is as follows: a device for continuously removing hardness in water, comprising:

[0007] a housing, wherein a raw water inlet and a product water outlet are arranged on the housing;

[0008] a conductive filter screen, which is arranged in the interior of the housing, and which divides the interior chamber of the housing into a raw water chamber and a product water chamber, wherein the raw water chamber communicates with the product water chamber through the filter holes of the conductive filter screen, the raw water chamber further communicates with the raw water inlet, and the product water chamber communicates with the product water outlet, and the conductive filter screen is used for connecting the negative electrode of an electrolysis power supply;

[0009] a conductive part disposed inside the shell, the conductive part being used for accessing a positive pole of the electrolysis power supply;

[0010] a scraping assembly comprising a driving member and a scraping part, the driving member being connected with the scraping part, the scraping part being disposed in the raw water chamber and being in contact with the conductive filter screen, the driving member being capable of moving the scraping part when in action to scrape off the scale attached to the conductive filter screen.

[0011] When the above-mentioned water hardness continuous removal device is in operation, on one hand, raw water enters the raw water chamber through the raw water inlet, and the obtained product water enters the product water chamber after being filtered by the conductive filter screen, and the obtained product water is discharged outside through the product water outlet; on the other hand, the conductive part accesses the positive pole of the electrolysis power supply, and the conductive filter screen accesses the negative pole of the electrolysis power supply, and during the electrolysis process of the conductive filter screen, hydroxyl ions are generated on the surface of the conductive filter screen, and react with bicarbonate ions in the raw water chamber to obtain carbonate ions, and the carbonate ions combine with calcium and magnesium ions to obtain carbonate precipitates on the conductive filter screen, that is, the scale-forming components in water are precipitated in advance by ionization technology to remove them from water without using any chemical reagent. In addition, when the scale is formed, the scraping assembly is controlled to work periodically, and the driving member of the scraping assembly moves the scraping part, so that the scale attached to the conductive filter screen can be scraped off from the conductive filter screen, preventing the scale from accumulating and affecting the operation of the device, ensuring normal product water production, without adding or using any chemical reagent, and without using a large amount of raw water in the backwashing process, so that the water hardness can be continuously removed, and the operation cost is relatively low.

[0012] In one of the embodiments, the driving member is connected with the scraping part through the conductive part; the conductive part is insulatedly connected with the scraping part, or the scraping part is an insulating structure.

[0013] In one of the embodiments, the conductive part comprises a conductive main shaft and a conductive sub-shaft connected with the conductive main shaft; the driving member is a motor, the conductive main shaft is connected with the power shaft of the driving member, and the conductive sub-shaft is connected with the scraping part.

[0014] In one of the embodiments, the conductive filter screen is in a cylindrical shape, two ends of the conductive filter screen are connected with the top and the bottom of the shell body respectively, the inner region of the conductive filter screen is the raw water chamber, the outer region of the conductive filter screen is the product water chamber, and the conductive main shaft is coaxially arranged with the central axis of the raw water chamber.

[0015] In one of the embodiments, the conductive sub-shaft is at least two, the scraping part is at least two, at least two of the scraping parts are connected with at least two of the conductive sub-shafts one by one, and at least two of the conductive sub-shafts are sequentially and spacedly arranged along the conductive main shaft.

[0016] In one of the embodiments, when the scraping part moves around the conductive filter screen for one round, the area walked by the plate edge of the scraping part in contact with the conductive filter screen completely covers the inner surface of the conductive filter screen.

[0017] In one of the embodiments, the conductive sub-shaft is rotationally connected with the scraping part and is arranged at an angle, and the conductive sub-shaft is further connected with the scraping part through an elastic member, the elastic member is in a compressed state, and the scraping part is in close contact with the conductive filter screen.

[0018] In one of the embodiments, the driving member is arranged on the outer wall of the shell, the conductive main shaft extends out of the shell and is connected with the driving member.

[0019] In one of the embodiments, the shell is cylindrical, and the height-diameter ratio of the shell is 5 to 8.

[0020] In one of the embodiments, the bottom of the shell is provided with a blowdown port in communication with the raw water chamber, and the shell is provided with a backwashing compressed air inlet in communication with the produced water chamber.

[0021] A water treatment system comprising at least one of the water hardness continuous removal devices.

[0022] The water treatment system has the following advantages. On one hand, raw water enters the raw water chamber through the raw water inlet, and the produced water obtained after being filtered by the conductive filter screen enters the produced water chamber, and the produced water is discharged outward through the produced water outlet. On the other hand, the conductive part is connected to the positive electrode of the electrolysis power supply, the conductive filter screen is connected to the negative electrode of the electrolysis power supply, and during the electrolysis process of the conductive filter screen, hydroxyl ions are generated on the surface of the conductive filter screen, react with bicarbonate ions in the raw water chamber to obtain carbonate ions, and the carbonate ions combine with calcium and magnesium ions to obtain carbonate precipitates on the conductive filter screen. That is, the scaling components are removed from the water in advance by ionization technology without using any chemical agents. In addition, when the scaling is formed, the scraping assembly is regularly controlled to work, the driving member of the scraping assembly drives the scraping part to move, so that the scaling attached to the conductive filter screen can be scraped off from the conductive filter screen, preventing the scaling from accumulating and affecting the operation of the device, ensuring normal water production, and at the same time, without adding or using any chemical agents, and without using a large amount of raw water in the backwashing process, the water hardness can be continuously removed, and the operation cost is relatively low.

[0023] In one of the embodiments, the water hardness continuous removal device is at least two, and the at least two water hardness continuous removal devices are connected in series or in parallel. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The illustrations are shown for the purpose of enabling one of ordinary skill in the art to make and use the application.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained without creative effort based on these drawings.

[0026] Figure 1 The structural schematic diagram of the hardness continuous removal device in an embodiment of the present application;

[0027] Figure 2 The structural schematic diagram of the hardness continuous removal device in an embodiment of the present application; Figure 1 The structural schematic diagram of the hardness continuous removal device in an embodiment of the present application;

[0028] Figure 3 The structural schematic diagram of the hardness continuous removal device in an embodiment of the present application; Figure 2 The structural schematic diagram of the hardness continuous removal device in an embodiment of the present application;

[0029] Figure 4 The structural schematic diagram of the water treatment system in an embodiment of the present application;

[0030] Figure 5 The structural schematic diagram of the water treatment system in another embodiment of the present application.

[0031] 10, shell; 11, raw water inlet; 12, product water outlet; 13, raw water chamber; 14, product water chamber; 15, blowdown port; 16, backwash compressed air inlet; 17, cylinder; 18, bottom cover; 19, top cover; 20, conductive screen; 30, conductive part; 31, conductive main shaft; 32, conductive sub-shaft; 40, scraping assembly; 41, driving member; 42, scraping part; 43, connecting shaft; 50, electrolysis power supply; 60, elastic member; 70, sealing sleeve; 80, first pipeline; 91, water inlet main pipe; 92, product water main pipe. DETAILED DESCRIPTION

[0032] In order to make the above object, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than the ways described herein, and those of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0033] Reference is made to Figures 1 to 3 , Figure 1A structural schematic diagram of a water hardness continuous removal device according to an embodiment of the present application is shown; Figure 2 A structural schematic diagram of a water hardness continuous removal device according to an embodiment of the present application is shown; Figure 1 A structural schematic diagram of a water hardness continuous removal device according to an embodiment of the present application is shown; Figure 3 A structural schematic diagram of a water hardness continuous removal device according to an embodiment of the present application is shown; Figure 2 An enlarged structural schematic diagram of A. The water hardness continuous removal device according to an embodiment of the present application comprises a housing 10, a conductive filter screen 20, a conductive part 30 and a scraping assembly 40. The housing 10 is provided with a raw water inlet 11 and a product water outlet 12. The conductive filter screen 20 is arranged inside the housing 10, and the conductive filter screen 20 divides the internal chamber of the housing 10 into a raw water chamber 13 and a product water chamber 14. The raw water chamber 13 is in communication with the product water chamber 14 through the filter holes of the conductive filter screen 20, and the raw water chamber 13 is also in communication with the raw water inlet 11. The product water chamber 14 is in communication with the product water outlet 12. The conductive filter screen 20 is used to connect to the negative electrode of an electrolysis power supply 50, and when the conductive filter screen 20 is electrified, hydroxyl ions will be generated on the surface of the conductive filter screen 20 correspondingly. The conductive part 30 is arranged inside the housing 10, and the conductive part 30 is used to connect to the positive electrode of the electrolysis power supply 50. When the conductive part 30 is electrified, hydrogen ions will be generated on the surface of the conductive part 30 correspondingly. The scraping assembly 40 comprises a driving member 41 and a scraping part 42. The driving member 41 is connected to the scraping part 42, and the scraping part 42 is arranged in the raw water chamber 13 and in contact with the conductive filter screen 20. When the driving member 41 operates, it can drive the scraping part 42 to move, so as to scrape off the scale attached to the conductive filter screen 20.

[0034] When the water hardness continuous removal device works, on the one hand, the raw water enters the raw water chamber 13 through the raw water inlet 11, and after being filtered by the conductive filter screen 20, the product water enters the product water chamber 14, and the obtained product water is discharged outward through the product water outlet 12; on the other hand, the conductive part 30 is connected to the positive electrode of the electrolysis power supply 50, and the conductive filter screen 20 is connected to the negative electrode of the electrolysis power supply 50. During the electrification and electrolysis process of the conductive filter screen 20, hydroxyl ions are generated on the surface of the conductive filter screen 20, which react with bicarbonate ions in the raw water chamber 13 to obtain carbonate ions. The carbonate ions combine with calcium and magnesium ions to obtain carbonate precipitates on the conductive filter screen 20, that is, the scale-forming components in the water are precipitated in advance by ionization technology to remove them from the water without using any chemical agent. In addition, when the scale is formed, the scraping assembly 40 is controlled to work periodically. The driving member 41 of the scraping assembly 40 drives the scraping part 42 to move, so as to scrape off the scale attached to the conductive filter screen 20 from the conductive filter screen 20, preventing the scale from accumulating and affecting the operation of the device, ensuring normal product water production, without adding or using any chemical agent, and without using a large amount of raw water in the backwashing process. In this way, the water hardness can be continuously removed, and the operation cost is relatively low.

[0035] It should be noted that, in an embodiment, the filtering accuracy of the conductive filter screen 20 includes but is not limited to 100 μm, and can be flexibly set to other values according to actual needs.

[0036] It should also be noted that the conductive part 30 is arranged inside the shell 10 means that at least part of the structure of the conductive part 30 is located inside the shell 10, and another part of the structure of the conductive part 30 can also extend to the outside of the shell 10 through the shell 10, so as to facilitate the connection of the structure located outside the shell 10.

[0037] Referring to Figures 1 to 3 In an embodiment, the working mode of the scraping assembly 40 is controlled periodically, for example, the pressure difference between the water outlet 12 and the raw water inlet 11 is detected and obtained, and when the pressure difference between the water outlet 12 and the raw water inlet 11 reaches a preset value, the scraping assembly 40 is controlled to work. Alternatively, the preset value is usually set to 1 bar-1.5 bar, and of course can be set to other values according to actual conditions, which is not limited here. In this way, when the pressure difference between the water outlet 12 and the raw water inlet 11 is greater than the preset value, it can be judged that the accumulation amount of the fouling on the conductive filter screen 20 reaches the set amount, and the scraping assembly 40 is controlled to perform the descaling work in time to ensure that the device operates without stopping. After the scraping is finished, the pressure difference between the raw water inlet 11 and the water outlet 12 is restored, and the device is correspondingly restored to normal water production operation.

[0038] Referring to Figures 1 to 3 In an embodiment, the driving member 41 is connected with the scraping part 42 through the conductive part 30. Specifically, the conductive part 30 is insulatedly connected with the scraping part 42, or the scraping part 42 is an insulating structure. In this way, the driving member 41 drives the conductive part 30 to move when it moves, and the conductive part 30 drives the scraping part 42 to move correspondingly, that is, the conductive part 30 not only acts as an anode, but also is combined with the scraping assembly 40 to drive the scraping part 42 to move and scrape, and at the same time, the structure of the device can be simplified. In addition, the conductive part 30 is insulatedly connected with the scraping part 42 or the scraping part 42 is an insulating structure, so that the short circuit caused by the electrically connected conductive part 30 and the conductive filter screen 20 through the scraping part 42 can be avoided.

[0039] Of course, as an optional solution, the driving member 41 can also be directly connected with the scraping part 42, and at this time, the conductive part 30 can be flexibly arranged in the raw water chamber 13 according to actual needs, as long as it does not cause short circuit by electrically contacting the conductive filter screen 20 and does not limit the scraping action of the scraping part 42.

[0040] It should be noted that the scraping assembly 40 can adopt a rotating movement to enable the scraping part 42 to scrape the conductive filter screen 20, or can adopt a translational movement to enable the scraping part 42 to scrape the conductive filter screen 20, or can adopt other movements to enable the scraping part 42 to scrape the conductive filter screen 20, and the present application is not limited in this regard, and the actual requirements can be flexibly set. In order to clearly show the present application, the embodiment will be specifically described by taking the rotating movement of the scraping assembly 40 to scrape the conductive filter screen 20 as an example.

[0041] Please refer to Figures 1 to 3 In one embodiment, the conductive part 30 comprises a conductive main shaft 31 and a conductive sub-shaft 32 connected to the conductive main shaft 31. Specifically, the driving member 41 is, for example, a motor, that is, the driving member 41 is provided with a power shaft. The conductive main shaft 31 is connected to the power shaft of the driving member 41. The conductive sub-shaft 32 is connected to the scraping part 42. In this way, when the driving member 41 works, the power shaft rotates to drive the conductive main shaft 31 to rotate, and the conductive main shaft 31 rotates to drive the conductive sub-shaft 32 to rotate, and the conductive sub-shaft 32 rotates to drive the scraping part 42 to scrape the conductive filter screen 20. In addition, the conductive part 30 adopts the structure of the mutual connection of the conductive main shaft 31 and the conductive sub-shaft 32, and in the rotating process of the conductive main shaft 31, the conductive sub-shaft 32 is synchronously and rapidly rotated in the flowing fluid to form an ionization electric field, which will be beneficial to the rapid formation of the scale on the surface of the conductive filter screen 20.

[0042] It should be noted that the "conductive sub-shaft 32" can be "a part of the conductive main shaft 31", that is, the "conductive sub-shaft 32" is integrally formed with "other parts of the conductive main shaft 31"; or can be a separate component separable from "other parts of the conductive main shaft 31", that is, the "conductive sub-shaft 32" can be independently manufactured and then combined with "other parts of the conductive main shaft 31" to form an integral whole. As shown in Figure 1 In one embodiment, the "conductive sub-shaft 32" is integrally formed with the "conductive main shaft 31".

[0043] Please refer to Figures 1 to 3 In one embodiment, the conductive sub-shaft 32 is connected to the scraping part 42 through an insulating material, or the scraping part 42 is made of an insulating material, so as to avoid the short circuit defect caused by the electrical connection between the conductive part 30 and the conductive filter screen 20. In addition, the conductive main shaft 31 and the power shaft of the driving member 41 are connected through an insulating material, for example, an insulating coupling (not shown in the figure), so as to avoid the safety hazard caused by the electrical connection between the conductive main shaft 31 and the driving member 41.

[0044] Please refer to Figures 1 to 3In one embodiment, the conductive filter screen 20 is in the shape of a cylinder, and the two ends of the conductive filter screen 20 are connected to the top and bottom of the shell 10 body respectively. The inner region of the conductive filter screen 20 is the raw water chamber 13, and the outer region of the conductive filter screen 20 is the product water chamber 14. The conductive main shaft 31 is coaxially arranged on the central axis of the raw water chamber 13. In this way, the conductive main shaft 31 is arranged on the central axis of the raw water chamber 13, and when the conductive main shaft 31 rotates, the conductive branch shaft 32 drives the scraping plate to rotate around the central axis of the raw water chamber 13, and the scraping plate can correspondingly realize 360° non-dead-angle scraping action on the surface of the conductive filter screen 20, with high scraping efficiency and good scraping effect. In addition, since the product water chamber 14 is arranged outside the raw water chamber 13, the raw water chamber 13 outputs the filtered water to the product water chamber 14 through the conductive filter screen 20, and the filtering area of the conductive filter screen 20 is large enough to have high product water efficiency.

[0045] Referring to Figures 1 to 3 In one embodiment, in order to ensure good filtering performance, the two ends of the conductive filter screen 20 are sealed and matched with the top and bottom of the shell 10 body by sealing materials, so that the raw water in the raw water chamber 13 can only enter the product water chamber 14 after being filtered by the conductive filter screen 20.

[0046] It should be noted that the conductive filter screen 20 is not limited to the cylindrical shape in the above embodiment, but can also be other shapes according to actual needs.

[0047] Referring to Figures 1 to 3 In one embodiment, the conductive branch shaft 32 is at least two, the scraping part 42 is at least two, the at least two scraping parts 42 are connected to the at least two conductive branch shafts 32 one by one, and the at least two conductive branch shafts 32 are sequentially and spacedly arranged along the conductive main shaft 31. In this way, on the one hand, when the conductive main shaft 31 rotates, it synchronously drives all the conductive branch shafts 32 to rotate, and correspondingly drives all the scraping parts 42 to perform synchronous scraping action on the conductive filter screen 20; on the other hand, the conductive branch shafts 32 are sequentially and spacedly arranged along the conductive main shaft 31, so that the scraping parts 42 arranged on the conductive branch shafts 32 can perform scraping treatment on multiple parts of the conductive filter screen 20 along the direction of the conductive main shaft 31, thereby achieving good scraping effect.

[0048] Specifically, one end of the conductive branch shaft 32 is connected to the conductive main shaft 31, and the other end of the conductive branch shaft 32 is connected to the scraping part 42. The conductive branch shaft 32 is arranged at an angle with the conductive main shaft 31, and optionally, the conductive branch shaft 32 is perpendicular to the conductive main shaft 31.

[0049] Referring to Figures 1 to 3In one embodiment, when the scraping part 42 moves around the conductive filter screen 20 for one round, the area walked by the plate edge of all the scraping parts 42 in contact with the conductive filter screen 20 completely covers the inner surface of the conductive filter screen 20. Thus, the driving member 41 drives all the scraping parts 42 to rotate for one round, and since the area walked by the plate edge of all the scraping parts 42 completely covers the inner surface of the conductive filter screen 20, scraping of all parts of the conductive filter screen 20 can be achieved, and the scraping effect is good.

[0050] Please refer to Figures 1 to 3 In one embodiment, the conductive sub-shaft 32 is rotationally connected with the scraping part 42 and is arranged at an angle, and the conductive sub-shaft 32 is further connected with the scraping part 42 through the elastic member 60, the elastic member 60 is in a compressed state, and the scraping part 42 is in close contact with the conductive filter screen 20. Alternatively, the elastic member 60 includes but is not limited to a spring, an elastic block, and an elastic column. Thus, under the elastic force of the elastic member 60, the elastic member 60 makes the plate edge of the scraping part 42 closely adhere to the inner surface of the conductive filter screen 20, and when the driving member 41 drives the conductive part 30 to rotate, the scraping part 42 has a good scraping effect on the conductive filter screen 20. In addition, since the scraping part 42 is rotationally connected with the conductive sub-shaft 32 and is provided with the elastic member 60 between the scraping part 42 and the conductive sub-shaft 32, when the resistance of the scraping part 42 during scraping is greater than the pressing force of the elastic member 60, the elastic member 60 will be compressed to adjust the position of the scraping part 42, so that the conductive filter screen 20 can be prevented from being damaged by forced scraping.

[0051] Please refer to Figures 1 to 3 In one embodiment, the end of the conductive sub-shaft 32 is rotationally connected with the scraping part 42 through the connecting shaft 43, that is, when the scraping part 42 rotates, the scraping part 42 rotates around the connecting shaft 43 relative to the conductive sub-shaft 32. Specifically, the connecting shaft 43 is parallel to the conductive main shaft 31, so that the rotation direction of the scraping part 42 is parallel to the conductive main shaft 31, which is conducive to the successful realization of scraping the scale on the inner surface of the conductive filter screen 20.

[0052] Please refer to Figures 1 to 3 In one embodiment, in order to ensure a good scraping effect, the scraping part 42 is plate-shaped, the plate surface of the scraping part 42 is arranged at an angle with the conductive sub-shaft 32, and the plate edge of the scraping part 42 is in close contact with the conductive filter screen 20. Alternatively, the angle between the plate surface of the scraping part 42 and the conductive sub-shaft 32 is, for example, 90° to 180°, and specifically, for example, 120° to 150°.

[0053] In addition, the plate edge is specifically parallel to the conductive main shaft 31, when the conductive main shaft 31 rotates, the plate edge of the scraping part 42 is driven to move along the inner surface of the conductive filter screen 20 in a circumferential direction, and each position of the plate edge is relatively uniformly stressed, so that the attached scale on the inner surface of the conductive filter screen 20 can be smoothly scraped off. Of course, as an optional solution, the plate edge of the scraping part 42 can also be arranged at an angle with the conductive main shaft 31, and when the driving part 41 is in operation, the attached scale on the inner surface of the conductive filter screen 20 can also be scraped off.

[0054] Referring to Figure 1 and Figure 2 In an embodiment, during the driving of the conductive part 30 to rotate, in order to make the driving part 41 more balanced in stress, all the conductive sub-shafts 32 are connected to the conductive main shaft 31 at different positions, specifically, part of the conductive sub-shafts 32 are connected to one side of the conductive main shaft 31, and the other part of the conductive sub-shafts 32 are connected to the other side of the conductive main shaft 31.

[0055] Referring to Figures 1 to 3 In an embodiment, the driving part 41 is arranged on the outer wall of the shell 10, and the conductive main shaft 31 penetrates the shell 10 to extend out of the shell 10 and is connected to the driving part 41. In this way, the driving part 41 is arranged outside the shell 10, that is, does not occupy the space in the inner chamber of the shell 10, and at the same time, the cleanliness can be ensured. In addition, the driving part 41 includes but is not limited to being arranged on the top of the shell 10, and the conductive main shaft 31 is correspondingly rotatably arranged on the top of the shell 10. In addition, in order to ensure the sealing, the top of the shell 10 is provided with a shaft hole (not shown in the figure) corresponding to the conductive main shaft 31, and a sealing sleeve 70 is arranged at the shaft hole, the sealing sleeve 70 is sleeved outside the conductive main shaft 31, and has a good sealing effect, so that the raw water in the raw water chamber 13 cannot leak out through the shaft hole.

[0056] Referring to Figure 1 and Figure 2 In an embodiment, the shell 10 is in a cylindrical shape, and the height-diameter ratio of the shell 10 is 5 to 8. The height-diameter ratio refers to the ratio of the height from the bottom surface of the shell 10 to the top surface of the shell 10 to the diameter of the shell 10. In this way, by setting the height-diameter ratio to 5 to 8, the height-diameter ratio is relatively large, the raw water slowly flows in the raw water chamber 13 surrounded by the conductive filter screen 20, the treatment time is prolonged, and the filtering effect of the raw water can be ensured.

[0057] Referring to Figure 1 and Figure 2 In an embodiment, the bottom of the shell 10 is provided with a blowdown port 15 communicating with the raw water chamber 13. In this way, the scale scraped off from the conductive filter screen 20 is discharged outwards through the blowdown port 15.

[0058] Referring toFigure 1 With Figure 2 In one embodiment, the shell 10 is provided with a backwash compressed air inlet 16 communicating with the product water chamber 14, which is used to access compressed air. In this way, during the device cleaning process, the raw water inlet 11 is continuously fed with water, the product water outlet 12 is closed, and compressed air is introduced into the backwash compressed air inlet 16, which forms a steam-water mixture with water to clean the mesh gap part of the scraping part 42 on the conductive filter screen 20 which is not easy to clean.

[0059] Please refer to Figure 1 With Figure 2 In one specific embodiment, the shell 10 includes a cylinder 17, and a bottom cover 18 arranged at the bottom of the cylinder 17 and a top cover 19 arranged at the top of the cylinder 17. The bottom of the conductive filter screen 20 is sealed and abuts against the bottom cover 18, and the top of the conductive filter screen 20 is sealed and abuts against the top cover 19. The raw water inlet 11 and the blowdown outlet 15 are arranged on the bottom cover 18. The product water outlet 12 and the backwash compressed air inlet 16 are arranged on the cylinder 17.

[0060] Please refer to Figure 1 With Figure 2 In one embodiment, a water treatment system includes at least one water hardness continuous removal device of any of the above embodiments.

[0061] The water treatment system described above, on the one hand, the raw water enters the raw water chamber 13 through the raw water inlet 11, and the product water obtained after being filtered by the conductive filter screen 20 enters the product water chamber 14, and the obtained product water is discharged outward through the product water outlet 12; on the other hand, the conductive part 30 is connected to the positive electrode of the electrolysis power supply 50, and the conductive filter screen 20 is connected to the negative electrode of the electrolysis power supply 50. During the electrolysis process of the conductive filter screen 20, hydroxyl ions are generated on the surface of the conductive filter screen 20, which react with bicarbonate ions in the raw water chamber 13 to obtain carbonate ions, and the carbonate ions combine with calcium and magnesium ions to obtain carbonate precipitates on the conductive filter screen 20. That is, by using ionization technology, the scale-forming components in the water are precipitated and removed from the water in advance, without using any chemical agents. In addition, when the scale is formed, the scraping assembly 40 is controlled to work regularly, the driving part 41 of the scraping assembly 40 drives the scraping part 42 to move, so that the scale attached to the conductive filter screen 20 can be scraped off from the conductive filter screen 20, preventing the scale from accumulating and affecting the operation of the device, ensuring normal water production, without adding or using any chemical agents, and without using a large amount of raw water during backwashing. This can achieve continuous removal of water hardness, and the operating cost is relatively low.

[0062] Please refer to Figure 1 , Figure 4 With Figure 5 , Figure 4 The structure diagram of the water hardness continuous removal device in the water treatment system when connected in series is shown,Figure 5 The structure of the series connection of the hardness-continuous-removal devices in the water treatment system is shown. In one embodiment, the hardness-continuous-removal devices are at least two, and the at least two hardness-continuous-removal devices are connected in series or in parallel. Thus, when the hardness-continuous-removal devices are connected in series, the hardness of the produced water can be further reduced; and when the hardness-continuous-removal devices are connected in parallel, the water treatment capacity can be improved.

[0063] It should be noted that the series connection of the two hardness-continuous-removal devices means that the water outlet 12 of one hardness-continuous-removal device is connected to the raw water inlet 11 of the other hardness-continuous-removal device through the first pipeline 80.

[0064] It should be noted that the parallel connection of the two hardness-continuous-removal devices means that the raw water inlets 11 of the two hardness-continuous-removal devices are connected to the water inlet main pipe 91 through pipelines, and the water inlet main pipe 91 is used for connecting the raw water; and the water outlets 12 of the two hardness-continuous-removal devices are connected to the water outlet main pipe 92 through pipelines, and the water outlet main pipe 92 is used for collecting the produced water and outputting the produced water.

[0065] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0066] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0068] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated features. Thus, a feature referred to as "first" or "second" can be included implicitly or explicitly in any quantity of features. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0069] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly specified and limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the present application, unless otherwise clearly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0071] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only embodiment.

Claims

1. A device for continuous removal of hardness in water, characterized in that The water hardness continuous removal device comprises: a shell, which is provided with a raw water inlet and a product water outlet; a conductive filter screen, which is arranged in the shell and separates the internal chamber of the shell into a raw water chamber and a product water chamber, the raw water chamber communicates with the product water chamber through the filter holes of the conductive filter screen, the raw water chamber also communicates with the raw water inlet, the product water chamber communicates with the product water outlet, and the conductive filter screen is used for connecting the negative electrode of an electrolysis power supply; a conductive part, which is arranged in the shell and is used for connecting the positive electrode of the electrolysis power supply, and comprises a conductive main shaft and a conductive branch shaft connected with the conductive main shaft; a scraping assembly, which comprises a driving member and a scraping part, the driving member is a motor, the conductive main shaft is connected with the power shaft of the driving member, the conductive branch shaft is connected with the scraping part, the scraping part is arranged in the raw water chamber and contacts with the conductive filter screen, and the driving member can drive the scraping part to move when the driving member operates, so as to scrape off the scale attached to the conductive filter screen; the conductive filter screen is in a cylindrical shape, two ends of the conductive filter screen are connected with the top and the bottom of the shell body respectively, the internal region of the conductive filter screen is the raw water chamber, the external region of the conductive filter screen is the product water chamber, and the conductive main shaft is coaxially arranged with the central axis of the raw water chamber; the conductive branch shaft is at least two, the scraping part is at least two, at least two of the scraping parts are connected with at least two of the conductive branch shafts one by one, and at least two of the conductive branch shafts are sequentially and spacedly arranged along the conductive main shaft.

2. The device for continuous removal of hardness in water according to claim 1, characterized in that, The conductive part and the scraping part are insulatedly connected.

3. The device for continuous removal of hardness in water according to claim 1, characterized in that, The scraping part is in an insulating structure.

4. The device for continuous removal of hardness in water according to claim 1, characterized in that, When the scraping part moves around the conductive filter screen for one round, the areas walked by the plate edges of all the scraping parts contacting with the conductive filter screen completely cover the inner surface of the conductive filter screen.

5. The device for continuous removal of hardness in water according to claim 1, characterized in that, The conductive branch shaft and the scraping part are rotationally connected and arranged at an angle, the conductive branch shaft is further connected with the scraping part through an elastic member, the elastic member is in a compressed state, and the scraping part tightly abuts against the conductive filter screen.

6. The device for continuous removal of hardness in water according to claim 1, characterized in that, The driving member is arranged on the outer wall of the shell, the conductive main shaft penetrates through the shell, extends out of the shell and is connected with the driving member.

7. The device for continuous removal of hardness in water according to claim 1, characterized in that, The shell is in a cylindrical shape, and the height-diameter ratio of the shell is 5 to 8.

8. The device for continuous removal of hardness in water according to claim 1, characterized in that, The bottom of the shell is provided with a blowdown port communicating with the raw water chamber, and the shell is provided with a backwashing compressed air inlet communicating with the product water chamber.

9. A water treatment system, characterized by, The water treatment system comprises at least one water hardness continuous removal device as claimed in any one of claims 1 to 8.

10. The water treatment system of claim 9, wherein, The water hardness continuous removal device is at least two, and the at least two water hardness continuous removal devices are connected in series or in parallel.

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