Pure water filtering device and method

Abstract

The present invention relates to the field of water treatment technology, and specifically discloses a pure water filtering device and method. A water inlet chamber, a water outlet chamber, and a regeneration chamber for accommodating salt water are arranged from top to bottom in a treatment box. A threaded guide is fixed in the water outlet chamber and extends vertically. An inner sleeve is threadedly sleeved on the threaded guide. An outer sleeve is coaxially rotated on the outer side of the inner sleeve. The filter cartridge is placed in the outer sleeve and the top is fixedly connected to the outer sleeve. The filter cartridge is connected to the water inlet chamber and can enter and exit the regeneration chamber. The bottom of the inner sleeve is provided with a wavy or folded convex edge. The bottom wall of the filter cartridge is provided with a stopper that presses against the convex edge. The filter cartridge can be extended and retracted, so that when the convex edge rotates and pushes the stopper downward, the stopper drives the filter cartridge to stretch, thereby increasing the pore size of the filter cartridge. The pure water filtering device and method of the present invention realizes automatic purification of the resin through the extension and retraction of the filter cartridge and the stirring of the convex edge, avoids the disassembly and assembly of the filter cartridge, is simple to operate, and saves time and effort.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a pure water filtering device and method. Background Art

[0002] Resin is a high molecular organic compound, which contains a large number of ionic groups on its molecular chain, which can exchange with ions in water. Resin materials are mainly divided into two types: cation exchange resin and anion exchange resin, which can remove cations and anions in water respectively. Commonly used resin materials include polystyrene, polyamide, polypropylene, etc. The principle of resin pure water filtration is mainly based on ion exchange and adsorption. When water passes through the resin layer, the ions in the water will exchange with the ionic groups on the surface of the resin and be adsorbed on the resin. At the same time, the resin can also adsorb impurities such as organic matter and microorganisms in the water, thereby achieving the purpose of improving the purity of water quality.

[0003] The Chinese patent document with the authorization announcement number CN117645342B discloses a modified cation exchange resin water purifier filter element, including a storage box and a protective outer layer, a purification chamber is provided in the storage box, the protective outer layer is provided in the purification chamber, a second filter layer is installed inside the protective outer layer, a storage tank for placing the modified cation exchange resin is installed inside the second filter layer, a water seepage hole is provided at the lower end of the storage tank, a base is fixedly installed at the bottom of the protective outer layer, and the base forms a detachable structure between the mounting seat and the purification chamber. After the water to be purified is passed into the storage tank, the cation exchange resin contacts it, thereby purifying the water body, and then the water penetrates into the second filter layer through the water seepage hole to achieve secondary purification. After a period of use, the purification power of the cation exchange resin in the storage tank will decrease. At this time, the base can be removed through the mounting seat, and the resin can be regenerated using a regeneration agent.

[0004] However, the water purifier filter element needs to be disassembled and assembled when regenerating the resin, and the storage tank needs to be separated to complete the purification of the resin, which makes the operation cumbersome, time-consuming and labor-intensive. Summary of the invention

[0005] The present invention provides a pure water filtering device and method, aiming to solve the problem in the related art that a water purifier filter element needs to be disassembled and assembled during purification, thereby causing cumbersome operation, time-consuming and labor-intensive.

[0006] The pure water filtering device of the present invention comprises a treatment box, a threaded guide and a filter cartridge for containing resin, wherein the treatment box is provided with a water inlet chamber, a water outlet chamber and a regeneration chamber for containing brine from top to bottom; the threaded guide is fixed in the water outlet chamber and extends vertically, an inner sleeve is threadedly sleeved on the threaded guide, and an outer sleeve is coaxially rotated on the outer side of the inner sleeve; the filter cartridge is placed in the outer sleeve and the top end is fixedly connected to the outer sleeve, the filter cartridge is connected to the water inlet chamber and can enter and exit the regeneration chamber; the bottom of the inner sleeve is provided with a wavy or broken line shaped convex edge, the bottom wall of the filter cartridge is provided with a stopper abutting against the convex edge, and the filter cartridge can be extended and retracted so that when the convex edge rotates and pushes the stopper downward, the stopper drives the filter cartridge to stretch, thereby increasing the pore size of the filter cartridge.

[0007] The effect is that when in use, the filter cartridge and the resin can be in the water outlet chamber, thereby achieving water filtration; during purification, the inner set can drive the outer frame and the filter cartridge to move down through spiral motion until they enter the regeneration chamber, and at the same time, the rotation action decomposed by the inner set can drive the convex edge to rotate, and the filter cartridge can be telescopic through the blocking member, thereby achieving the intake and discharge of salt water, increasing the fluidity of salt water, and improving the efficiency of salt water replacement and purification of resin. The convex edge can stir the resin when rotating, causing the resin to move, thereby promoting the mixing of the resin and salt water and improving the purification effect. It can be seen that the mutual displacement of the filter cartridge in the water outlet chamber and the regeneration chamber can avoid the disassembly and assembly of the filter cartridge, realize the automatic purification of the resin, and the operation is simple, saving time and effort.

[0008] Preferably, an elastic member is connected between the bottom wall of the filter cartridge and the outer casing frame, and the elastic member is used to reset the filter cartridge after being stretched.

[0009] The effect is that the elastic member can promote the resetting of the filter cartridge, assist the filter cartridge to form a reciprocating telescopic motion, realize the flow of salt water, and improve the purification efficiency of the resin. When the filter cartridge reciprocates and telescopes, it can make the resin rub back and forth, and combined with the flow of salt water, it is easy to rub out impurities in the resin, further improving the purification effect of the resin.

[0010] Preferably, the wall of the filter cartridge is formed by overlapping an inner lining and an outer lining, the inner lining includes a plurality of inner spiral rings spaced apart along the circumference of the threaded guide, the outer lining includes a plurality of outer spiral rings spaced apart along the circumference of the threaded guide, the rotation directions of the outer spiral rings and the inner spiral rings are opposite, and the spacing areas between the plurality of inner spiral rings and the plurality of outer spiral rings constitute the pores.

[0011] Preferably, the filter cartridge is provided with a plurality of locking members arranged at vertical intervals, the locking members comprising a latch and a limiting portion, the latch being movably inserted in the overlapping portion of the inner spiral ring and the outer spiral ring and being capable of rotating and sliding; the limiting portion being arranged on the side of the latch, the inner spiral ring and the outer spiral ring being provided with insertion holes, the limiting portion being inserted in the two insertion holes, and the limiting portion being connected to the inner spiral ring or the outer spiral ring via a reset member; an unlocking member is provided in the regeneration chamber, for moving the latch inward when the latch moves downward, thereby moving the limiting portion out of the insertion hole.

[0012] Preferably, the unlocking member comprises a vertically arranged unlocking plate, the end of the unlocking plate forms an inclined or convex arc-shaped guiding surface, and the guiding surface is used to guide the pin to the plate surface of the unlocking plate, and during the guiding, the pin moves inward.

[0013] The effect is that under the action of the unlocking plate, all the locking parts will be unlocked in sequence from bottom to top, so that in the downward stroke, the filter cartridge is partially unlocked, and the telescopic action of the filter cartridge can be fully reflected here, so that the local area in the unlocked state is fully stretched, further increasing the pores of this local area, facilitating the influx of brine, so that the brine can penetrate into the inner layer of the resin. In other words, it is guaranteed that the resin at the axis of the filter cartridge can be infiltrated by the brine, so that the resin can be purified more comprehensively and thoroughly.

[0014] Preferably, the unlocking member also includes an unlocking strip extending in the vertical direction, and the unlocking strip is elastically slidably connected to the processing box along the radial direction of the threaded guide member, and a wedge-shaped structure is arranged between the top end of the unlocking strip and the top end of the outer coat rack, so that when the top end of the outer coat rack moves down into the regeneration chamber, the unlocking strip is squeezed and moved, and the unlocking strip pushes all the pins inward.

[0015] The effect is that when all the latches move inward, each limiter moves out of the insertion hole of the outer spiral ring, so that the entire area of ​​the filter cartridge is unlocked. At this time, the telescopic action of the filter cartridge can evenly cover all areas, so that the pores of the filter cartridge evenly open and retract, thereby increasing the fluidity of the brine and promoting the purification of the resin.

[0016] Preferably, the wedge-shaped structure comprises a wedge-shaped surface provided at the top end of the unlocking strip and / or the top end of the coat rack.

[0017] The effect is that the wedge-shaped surface is used to transmit the downward movement force of the outer cover frame to the unlocking strip, so as to cause the unlocking strip to move toward the inner side of the filter cartridge.

[0018] Preferably, a rotating member is rotatably sleeved on the threaded guide member, the rotating member is vertically slidably connected to the inner sleeve member, and a driver for driving the rotating member to rotate is provided on the processing box.

[0019] Preferably, a cylindrical shell covering the outer side of the outer frame is provided inside the water outlet cavity, the top end of the cylindrical shell is connected with the water inlet cavity through a water conduit, and the bottom end of the cylindrical shell is provided with a water outlet pipe connected with the water outlet cavity.

[0020] The pure water filtering method of the present invention adopts the above-mentioned pure water filtering device and comprises the following steps:

[0021] The water to be purified is passed into the filter cartridge, and the resin in the filter cartridge adsorbs and removes impurities from the water;

[0022] The inner sleeve moves downward along the spiral guide, driving the filter cartridge downward, and the filter cartridge enters the regeneration chamber;

[0023] The convex edge rotates relative to the stopper and pushes the stopper to move downward, and the stopper drives the filter cartridge to stretch, thereby promoting the flow of salt water in the filter cartridge.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0025] Under normal conditions, the filter cartridge and the resin can be in the water outlet chamber, thereby achieving water filtration; during purification, the driver can drive the inner set to perform spiral motion through the rotating part, and the inner set drives the outer frame and the filter cartridge to move downward until both enter the regeneration chamber. The inner set can also drive the convex edge to rotate, and the convex edge pushes the stopper to make the filter cartridge telescopic, thereby achieving the entry and exit of salt water, increasing the fluidity of salt water, and improving the efficiency of salt water replacement and purification of resin. The convex edge can stir the resin when rotating, causing the resin to move, thereby promoting the mixing of the resin and salt water and improving the purification effect. It can be seen that the mutual displacement of the filter cartridge in the water outlet chamber and the regeneration chamber can avoid the disassembly and assembly of the filter cartridge, and realize the automatic purification of the resin, which is simple to operate and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional schematic diagram of the pure water filtering device of the present invention.

[0027] Figure 2 The present invention Figure 1 An enlarged schematic diagram of point A in FIG.

[0028] Figure 3 It is a cross-sectional schematic diagram of the barrel shell portion of the present invention.

[0029] Figure 4 It is a three-dimensional schematic diagram of the rotating part to the filter cartridge of the present invention.

[0030] Figure 5 It is an exploded schematic diagram of the outer cover frame to filter cartridge portion of the present invention.

[0031] Figure 6 The present invention Figure 5 An enlarged schematic diagram of point B in FIG.

[0032] Reference numerals:

[0033] 1. Processing box; 11. Water inlet chamber; 12. Water outlet chamber; 13. Regeneration chamber; 14. Upper baffle; 15. Lower baffle; 151. Support frame; 16. Cylinder shell; 161. Water guide pipe; 162. Water outlet pipe;

[0034] 2. threaded guide; 21. inner set; 211. flange; 22. rotating member; 23. outer frame; 231. closed plate; 2311. notch structure; 24. swivel; 25. connecting rod;

[0035] 3. Filter cartridge; 31. Stopper; 32. Spring telescopic rod; 33. Inner spiral ring; 34. Outer spiral ring; 341. Socket;

[0036] 4. Locking member; 41. Latch; 42. Limiting portion; 421. Tension spring;

[0037] 51. unlocking plate; 511. guide surface; 52. unlocking strip; 521. spring sleeve rod; 522. wedge surface. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] Combine the following Figures 1 to 6 The pure water filtering device of the present invention is described.

[0040] like Figure 1 As shown, the pure water filtering device of the present invention includes a processing box 1, a threaded guide 2 and a filter cartridge 3.

[0041] Continue to refer Figures 1 to 4 The treatment box 1 is provided with a water inlet chamber 11, a water outlet chamber 12 and a regeneration chamber 13 arranged from top to bottom. The water inlet chamber 11 and the water outlet chamber 12 are separated by an upper partition 14 installed in the treatment box 1, and the water outlet chamber 12 and the regeneration chamber 13 are separated by a lower partition 15 installed in the treatment box 1. The water inlet chamber 11 can communicate with the outside world for the entry of water to be purified; the water outlet chamber 12 can also communicate with the outside world for drainage; the regeneration chamber 13 is used to contain salt water, and the sodium ions in the salt water are exchanged with the ions in the resin, so as to remove impurities on the resin and realize the regeneration of the resin.

[0042] The threaded guide 2 is fixed in the water outlet chamber 12 and extends vertically. Its top passes through the water inlet chamber 11 and is fixedly connected to the treatment box 1. The threaded guide 2 can directly adopt a screw or a lead screw. The threaded sleeve of the threaded guide 2 is provided with an inner sleeve 21. The threaded guide 2 is provided with a rotating member 22 located above the inner sleeve 21. The rotating member 22 is connected to the inner sleeve 21 in a vertical sliding manner. The upper partition 14 is provided with a driver for driving the rotating member 22 to rotate. When the driver drives the rotating member 22 to rotate, the rotating member 22 drives the inner sleeve 21, so that it has a tendency to rotate. Under the guidance of the threaded guide 2, the inner sleeve 21 performs a spiral motion.

[0043] An outer frame 23 is coaxially provided on the outer side of the inner set 21, and the two are spaced apart. A rod frame is provided between the outer frame 23 and the inner set 21, and the rod frame includes a swivel 24 rotatably assembled on the inner set 21 and a connecting rod 25 connecting the swivel 24 and the outer frame 23. In this way, when the inner set 21 moves in a spiral motion, the decomposed rotational motion cannot be transmitted to the swivel 24 and the outer frame 23, while the decomposed moving motion can be transmitted to the swivel 24 and the outer frame 23, so that the outer frame 23 moves with the inner set 21 but does not rotate.

[0044] The lower partition 15 is fixed with a shell 16 located in the water outlet chamber 12 and covered on the outside of the outer frame 23. The top of the shell 16 is connected to the water inlet chamber 11 through a water guide pipe 161, and the bottom of the shell 16 is provided with a water outlet pipe 162 connected to the water outlet chamber 12. The top of the outer frame 23 has a ring-shaped closed plate 231, and the outer edge of the closed plate 231 contacts the inner wall of the shell 16. After the purified water in the water inlet chamber 11 enters the shell 16 through the water guide pipe 161, it is blocked by the closed plate 231 and can only flow to the center hole of the closed plate 231, and then flow to the inner side of the outer frame 23. In order to guide the movement of the outer frame 23, a guide groove and guide block structure can be added on the outer edge of the closed plate 231 and the inner wall of the shell 16 to guide the movement of the closed plate 231 and the outer frame 23, so that it can only move vertically.

[0045] The filter cartridge 3 is coaxially placed in the outer frame 23, and the top end is fixedly connected to the outer frame 23, and the bottom end is closed. The top end of the filter cartridge 3 is also connected to the central hole of the closed plate body 231, so that the water to be purified can flow into the filter cartridge 3 from the central hole of the closed plate body 231. The filter cartridge 3 is used to hold resin. In this embodiment, the resin can be selected as a cation exchange resin or an anion exchange resin, which is not limited here. Its shape can be solid particles. The resin can adsorb and remove impurities from the water to be purified in the filter cartridge 3 based on the principle of ion exchange, thereby improving the purity of the water quality. Then, the treated water seeps out of the filter cartridge 3, flows into the outlet pipe 162 through the outer frame 23, and then is discharged into the water outlet chamber 12, and is discharged from the water outlet chamber 12, thus completing the water filtration and purification process.

[0046] Continue to refer Figures 1 to 5 , the lower partition 15 is provided with a through hole for the filter cartridge 3 to pass through, and the filter cartridge 3 can move in and out of the regeneration chamber 13 through the through hole. The bottom of the inner sleeve 21 is fixedly provided with a wavy convex edge 211, and the bottom wall of the filter cartridge 3 is fixedly provided with a baffle 31, and the upper end of the baffle 31 is against the convex edge 211. The filter cartridge 3 can be telescopic. When the inner sleeve 21 is in spiral motion, the decomposed rotation action can drive the convex edge 211 to rotate, and the convex edge 211 pushes the baffle 31 downward, and the baffle 31 drives the filter cartridge 3 to stretch, so that the pores of the filter cartridge 3 are increased. In this way, the brine in the regeneration chamber 13 is convenient for the brine to flow into the filter cartridge 3, which speeds up the mixing of brine and resin, improves the replacement efficiency, and then improves the purification and regeneration effect of brine on the resin. In addition, when the convex edge 211 rotates, it can stir the resin, so that the resin is in a state of motion, further promoting the mixing of resin and brine, and improving the purification effect. The salt water in the regeneration chamber 13 has a soaking effect on the filter cartridge 3 , and can sterilize the corners, gaps and other parts of the filter cartridge 3 .

[0047] An elastic member is connected between the bottom wall of the filter cartridge 3 and the outer frame 23. The elastic member can be a vertical spring telescopic rod 32. When the stopper 31 stretches the filter cartridge 3 downward, the filter cartridge 3 squeezes the spring telescopic rod 32 to store force. When the bottom side portion of the convex edge 211 passes over the stopper 31, the bottom wall of the filter cartridge 3 and the stopper 31 move up and reset under the elastic force of the spring telescopic rod 32, and the filter cartridge 3 shrinks. In this way, when the convex edge 211 rotates, the filter cartridge 3 can perform a reciprocating telescopic movement, which realizes the intake and discharge of salt water, increases the fluidity of salt water, and improves the efficiency of replacement and purification. When the filter cartridge 3 reciprocates and expands, the resin can be rubbed back and forth, combined with the flow of salt water, it is convenient to rub out impurities in the resin, and further improve the purification effect of the resin.

[0048] As can be seen from the above, when in use, the filter cartridge 3 and the resin are in the water outlet chamber 12 to achieve water filtration; during purification, the driver controls the filter cartridge 3 and the resin to enter the regeneration chamber 13, and the salt water purifies and regenerates the resin, thereby avoiding the disassembly and assembly of the filter cartridge 3, achieving automatic purification of the resin, and simple operation, saving time and effort.

[0049] Continue to refer Figures 2 to 5 The top and bottom of the filter cartridge 3 are both hard structures, which can be made of plastic or metal; the cartridge wall is formed by overlapping an inner lining and an outer lining, the inner lining includes a plurality of inner spiral rings 33 distributed at equal intervals along the circumference of the threaded guide 2, and the outer lining includes a plurality of outer spiral rings 34 distributed at equal intervals along the circumference of the threaded guide 2, the outer spiral rings 34 and the inner spiral rings 33 have opposite rotation directions, and the interval area between the plurality of inner spiral rings 33 and the plurality of outer spiral rings 34 constitutes the above-mentioned pores. It should be noted that the material of the inner spiral rings 33 and the outer spiral rings 34 are both rubber.

[0050] Therefore, when the filter cartridge 3 performs a telescopic movement, the inner spiral ring 33 and the outer spiral ring 34 can be relatively tilted, that is, deflected a small amount, so as to adapt to the telescopic movement of the filter cartridge 3 itself.

[0051] Continue to refer Figures 1 to 6 The filter cartridge 3 is provided with a plurality of locking members 4 arranged at equal intervals in the vertical direction. The locking member 4 includes a latch 41 and a limiting portion 42. The latch 41 is movably inserted in the overlapping portion of the inner spiral ring 33 and the outer spiral ring 34 and can rotate and slide. The limiting portion 42 is fixed to the side of the latch 41. The inner spiral ring 33 and the outer spiral ring 34 are both provided with insertion holes 341. The limiting portion 42 is inserted into the two insertion holes 341, and the limiting portion 42 is connected to the inner spiral ring 33 through a reset member, and the reset member can directly adopt a tension spring 421. An unlocking member is provided in the regeneration chamber 13, and the unlocking member includes a vertically arranged unlocking plate 51, and the end of the unlocking plate 51 forms a convex arc-shaped guide surface 511. When the filter cartridge 3 moves down to the regeneration chamber 13, all the locking members 4 will pass through the guide surface 511 from bottom to top in sequence. When passing through the guide surface 511, the latch 41 can transition to the plate surface of the unlocking plate 51 along the guide surface 511, and at the same time, the latch 41 moves toward the inner side of the filter cartridge 3, thereby causing the limiting portion 42 to move out of the insertion hole 341 of the outer spiral ring 34. At this time, the limiting portion 42 releases the lock on the overlapping portion of the outer spiral ring 34 and the inner spiral ring 33. When the latch 41 passes over the unlocking plate 51, the limiting portion 42 will be re-engaged in the insertion hole 341 of the outer spiral ring 34 under the action of the tension spring 421.

[0052] It can be seen that under the action of the unlocking plate 51, all the locking parts 4 will be unlocked in sequence from bottom to top, so that in the downward stroke, the filter cartridge 3 is partially unlocked, and the telescopic action of the filter cartridge 3 can fully act on the local area, so that the local area is fully stretched, further increasing the pores of the local area, facilitating the influx of brine, so that the brine can penetrate into the inner layer of the resin. In other words, it is ensured that the resin at the axis of the filter cartridge 3 can be infiltrated by the brine, so that the resin can be purified more thoroughly.

[0053] The unlocking member further includes an unlocking strip 52, which extends vertically and is located on the side of the unlocking plate 51 away from the filter cartridge 3, and is fixedly connected to the unlocking plate 51, and the length of the unlocking strip 52 is greater than the length of the unlocking plate 51. The lower partition plate 15 is fixedly provided with a support frame 151 located in the regeneration chamber 13, and a spring sleeve rod 521 arranged along the radial direction of the threaded guide member 2 is connected between the unlocking strip 52 and the support frame 151. A wedge-shaped structure is arranged between the top of the unlocking strip 52 and the top of the outer frame 23, and the wedge-shaped structure includes a wedge-shaped surface 522 arranged at the top of the unlocking strip 52. It should be noted that a notch structure 2311 is arranged on the closing plate body 231. When the outer frame 23 gradually moves downward, the notch structure 2311 gradually approaches the wedge-shaped surface 522. When the top of the outer frame 23 begins to enter the regeneration chamber 13, each area of ​​the filter cartridge 3 has been unlocked step by step from bottom to top. At this time, the edge of the notch structure 2311 will press against the wedge-shaped surface 522, and the unlocking strip 52 will be squeezed by the wedge-shaped surface 522. The unlocking strip 52 moves toward the inner side of the filter cartridge 3 under the guidance of the spring sleeve rod 521, thereby pushing all the pins 41 to move inward, so that each limiting portion 42 moves out of the insertion hole 341 of the outer spiral ring 34, so that all areas of the filter cartridge 3 are in an unlocked state. At this time, the telescopic action of the filter cartridge 3 can evenly act on the entire area of ​​the filter cartridge 3, so that all the pores of the filter cartridge 3 are opened or retracted, thereby increasing the fluidity of the brine and promoting the purification of the resin.

[0054] refer to Figures 1 to 6 In this embodiment, the inner sleeve 21 and the rotating member 22 are both ring structures, and the driver can be a combination of a driving motor and a gear pair mechanism. The driving motor drives the rotating member 22 to rotate through the gear pair mechanism.

[0055] In other embodiments, the unlocking plate 51 in the unlocking member can also be replaced by a trapezoidal platform; the wedge surface 522 in the wedge structure can be arranged at the top of the outer coat rack 23, or, the wedge surface 522 is two, which are arranged at the top of the unlocking strip 52 and the top of the outer coat rack 23.

[0056] refer to Figures 1 to 6 The present invention also provides a pure water filtration method, using the above-mentioned pure water filtration device, comprising the following steps:

[0057] The water to be purified is passed into the filter cartridge 3, and the resin in the filter cartridge 3 adsorbs and removes impurities from the water.

[0058] The inner sleeve 21 moves downward along the spiral guide, driving the filter cartridge 3 to move downward, and the filter cartridge 3 enters the regeneration chamber 13 .

[0059] The convex edge 211 rotates relative to the stopper 31 and pushes the stopper 31 downward, and the stopper 31 drives the filter cartridge 3 to stretch, thereby promoting the flow of salt water in the filter cartridge 3 .

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A pure water filtration device, comprising a treatment box, wherein the treatment box is provided with a water inlet chamber, a water outlet chamber and a regeneration chamber for accommodating salt water from top to bottom, characterized in that: Also includes: A threaded guide, the threaded guide is fixed in the water outlet cavity and extends vertically, an inner sleeve is threadedly sleeved on the threaded guide, and an outer sleeve is coaxially rotatably provided on the outer side of the inner sleeve; A filter cartridge for containing resin, the filter cartridge is placed in the outer frame and the top end is fixedly connected to the outer frame, the filter cartridge is connected to the water inlet chamber and can enter and exit the regeneration chamber; the bottom of the inner sleeve is provided with a wavy or folded-line convex edge, the bottom wall of the filter cartridge is provided with a stopper against the convex edge, the filter cartridge can be extended and retracted, so that when the convex edge rotates and pushes the stopper downward, the stopper drives the filter cartridge to stretch, so that the pores of the filter cartridge are increased; The wall of the filter cartridge is formed by overlapping an inner lining and an outer lining, the inner lining includes a plurality of inner spiral rings spaced apart along the circumference of the threaded guide, the outer lining includes a plurality of outer spiral rings spaced apart along the circumference of the threaded guide, the outer spiral rings and the inner spiral rings have opposite rotation directions, and the spacing areas between the plurality of inner spiral rings and the plurality of outer spiral rings constitute the pores.

2. The pure water filtration device according to claim 1, characterized in that: An elastic member is connected between the bottom wall of the filter cartridge and the outer casing frame, and the elastic member is used to reset the filter cartridge after being stretched.

3. The pure water filtration device according to claim 1, characterized in that: The filter cartridge is provided with a plurality of locking members arranged at intervals along the vertical direction, the locking members comprising a latch and a limiting portion, the latch being movably inserted in the overlapping portion of the inner spiral ring and the outer spiral ring and being capable of rotation and sliding; the limiting portion being provided on the side of the latch, the inner spiral ring and the outer spiral ring being provided with insertion holes, the limiting portion being inserted in the two insertion holes, and the limiting portion being connected to the inner spiral ring or the outer spiral ring through a reset member; An unlocking piece is arranged in the regeneration chamber, which is used to move the latch inward when the latch moves downward, thereby moving the limiting part out of the insertion hole.

4. The pure water filtration device according to claim 3, characterized in that: The unlocking member includes a vertically arranged unlocking plate, the end of the unlocking plate forms an inclined or convex arc-shaped guiding surface, and the guiding surface is used to guide the latch to the plate surface of the unlocking plate. During the guidance, the latch moves inward.

5. The pure water filtration device according to claim 3, characterized in that: The unlocking member also includes an unlocking strip extending in the vertical direction, and the unlocking strip is elastically slidably connected to the processing box along the radial direction of the threaded guide member. A wedge-shaped structure is arranged between the top end of the unlocking strip and the top end of the outer coat rack so that when the top end of the outer coat rack moves down into the regeneration chamber, the unlocking strip is squeezed and moved, and the unlocking strip pushes all the pins to move inward.

6. The pure water filtration device according to claim 5, characterized in that: The wedge-shaped structure includes a wedge-shaped surface arranged at the top end of the unlocking strip and / or the top end of the outerwear rack.

7. The pure water filtration device according to claim 1, characterized in that: A rotating member is rotatably sleeved on the threaded guide member, and the rotating member is vertically slidably connected with the inner sleeve member. A driver for driving the rotating member to rotate is disposed on the processing box.

8. The pure water filtration device according to claim 1, characterized in that: The water outlet cavity is provided with a cylinder shell which is covered on the outside of the outer frame. The top of the cylinder shell is connected with the water inlet cavity through a water conduit. The bottom of the cylinder shell is provided with a water outlet pipe which is connected with the water outlet cavity.

9. A pure water filtration method, characterized in that: The pure water filtration device according to claim 1 comprises the following steps: The water to be purified is passed into the filter cartridge, and the resin in the filter cartridge adsorbs and removes impurities from the water; The inner sleeve moves downward along the threaded guide, driving the filter cartridge downward, and the filter cartridge enters the regeneration chamber; The convex edge rotates relative to the stopper and pushes the stopper to move downward, and the stopper drives the filter cartridge to stretch, thereby promoting the flow of salt water in the filter cartridge.

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