Water purifier with filtering and separation functions and its usage method

Abstract

The present invention discloses a water purifier with a filtering and separating function and a usage method, which relates to the technical field of water purifier filtering and separation, and is used to solve the problems of inability to perform filtering assistance for high-frequency filter element replacement and difficulty in extending the service life of the filter element; the present invention performs auxiliary interception of water impurities for the PP cotton filter element that is frequently replaced in the water purifier. A locking mechanism is installed on the PP cotton filter element placement shell in the first filter housing group. When the PP cotton filter element is installed, the upper pressing sleeve located on the limit post is pressed down, causing the sleeve to move. At the same time, the outer sleeve of the PP laminate is squeezed by using the pressing ring. During the subsequent water inlet process, the fitted PP laminate completes the preliminary interception of impurities in the water body, and then discharges through the PP cotton filter element, so as to slow down the pollution of the PP cotton filter element by impurities and extend the service life of the PP cotton filter element in the water purifier.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifier filtration and separation, and specifically to a water purifier with a filtration and separation function and its usage method. Background Art

[0002] A water purifier removes chlorine in urban tap water and various harmful organic pollutants such as bacteria, viruses, colloids, rust, and impurities generated by secondary pollution through physical methods of filtration and adsorption. Most water purifiers choose to use activated carbon, melt-blown filters, microporous ceramics, hollow fibers, KDF, etc. to purify water. These materials need to be replaced regularly, and the filters also need to be well protected;

[0003] The filters of household water purifiers vary according to the type of the product. For example, the number of filters in an ultrafiltration water purifier is generally 3 - 5. The first-stage PP cotton: initially filters the raw water to remove relatively coarse particulate impurities, sludge, colloids, suspended substances, etc. in the water; the second-stage granular activated carbon: adsorbs odors, colors, residual chlorine, organic substances, some heavy metals, etc. in the water; the third-stage post-activated carbon: improves the taste; the fourth-stage ultrafiltration membrane: removes impurities such as bacteria, rust, colloids, and organic substances in the water; at the same time, the replacement times of different filters are also different. For example, the commonly used PP cotton and granular activated carbon filters basically need to be replaced every 3 - 6 months, while the ultrafiltration membrane filter can be replaced every 2 - 3 years, and the reverse osmosis membrane filter with good filtration accuracy should be replaced about every 2 years. Due to the different replacement frequencies of the filters, during the filter replacement process, it is usually necessary to close the inlet ball valve, then close the pressure tank ball valve, drain the remaining water in the water purifier, and finally restart the power supply to release the pressure. The overall filter replacement needs to be carried out in a shutdown state to ensure the safety of filter replacement. For water purifier filters with a high replacement frequency, such as the PP cotton filter, traditional water purifiers cannot perform self-maintenance of the first-stage PP cotton filter, resulting in an increased replacement frequency of the front-end filter and indirectly increasing the usage cost of the water purifier;

[0004] Therefore, we propose a water purifier with a filtration and separation function and its usage method. Summary of the Invention

[0005] The purpose of the present invention is to provide a water purifier with a filtration and separation function and its usage method to solve the technical problems in the above background art that the water purifier cannot perform filtration assistance for high-frequency filter replacement, cannot extend the service life of the filter, and cannot replace the filter in a non-shutdown state.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A water purifier with a filtration and separation function includes a box body, in which a first filter housing group and a second filter housing group are symmetrically installed, and a communicating pipe is symmetrically communicated between the opposite faces of the first filter housing group and the second filter housing group;

[0007] A limiting post is fixedly connected to the inner wall of the bottom of one of the filter housing groups 1 and 2. A locking mechanism is sleeved and slidably connected to the limiting post. The locking mechanism includes a sleeve and a pressing sleeve. The pressing sleeve is sleeved and slidably connected to the outer wall of the limiting post. One side of the top of the pressing sleeve is fixedly connected to the sleeve by welding. A pressing ring is fixedly sleeved on the outer wall of the sleeve by welding. A filter screen is installed on the sleeve, and drain holes are evenly formed in the sleeve at the bottom of the filter screen. Stainless steel rotating arms 1 are symmetrically rotatably connected to the outer side walls of both sides of the pressing sleeve.

[0008] Further, each of the filter housing groups 1 and 2 includes four housings, and a PP cotton filter element, a granular activated carbon filter element, a post-activated carbon filter element, and an ultrafiltration membrane filter element are installed in sequence from left to right. The two are independent clean water pipelines. A PP cotton filter element is installed in the sleeve. PP laminations are evenly sleeved and slidably connected to the outer wall of the sleeve in the filter housing groups 1 and 2. A flushing pipe and a sewage discharge pipe are installed on one of the filter housing groups 1 and 2, and solenoid valves are installed on the flushing pipe and the sewage discharge pipe.

[0009] Further, a screw cap is threadedly connected to the top of the filter housing groups 1 and 2, and a pressing post is fixedly connected to the inner wall of the top of the screw cap.

[0010] Further, stainless steel rotating arms 2 are symmetrically rotatably connected to the outer wall section of the limiting post. A counterweight ball is fixedly connected to one end of the stainless steel rotating arm 2 by welding, and the other end of the stainless steel rotating arm 2 is movably connected to the end of the stainless steel rotating arm 1.

[0011] Further, a liquid discharge port is formed on one side of the communication pipe, and the liquid discharge port on the communication pipe is communicated through a hose. Sealing plates are symmetrically movably connected in the two communication pipes. A rotating shaft is movably connected to the opposite surfaces of the two communication pipes, and both ends of the rotating shaft penetrate through the outer wall of the communication pipe and are fixedly sleeved with the sealing plates. A knob 1 and a knob 2 are symmetrically movably connected to the box body.

[0012] Further, a turntable is fixedly sleeved on the central shafts of the knob 1 and the knob 2. Connecting rods are symmetrically rotatably connected to both sides of the turntable. A sleeve rod is slidably connected in the box body. A rotating rod is fixedly sleeved on the outer wall of the rotating shaft.

[0013] Further, the sleeve rod is clamped with the protrusions on the two rotating rods, and one end of the connecting rod is correspondingly movably connected to one side of the sleeve rod.

[0014] The usage method of the water purifier with a filtering and separating function is as follows:

[0015] Flow drainage: For the two groups of filter cartridges installed on the box body, four filter cartridges in the same row form a water purification unit, and a single water purification unit works. The external pipeline is connected to the liquid discharge port on the connecting pipe. The water flow first enters the unilateral water purification unit through the connecting pipe. A sleeve is installed outside the PP cotton filter element, and multiple PP laminations are sleeved on the outer wall of the sleeve. The water flow first contacts the compressed PP laminations and then contacts the PP cotton filter element in the sleeve. Subsequently, the water flow flows into the bottom connecting pipe through the drain hole and starts to enter the first group of granular activated carbon filter cartridges. After overflowing the top connecting pipe, it enters the post-activated carbon filter element again. Finally, the water flow is discharged through the ultrafiltration membrane filter element.

[0016] Filter element replacement without shutdown: According to the type of filter element to be replaced, rotate the first knob on the box body. The rotation of the first knob drives the rotation of the sealing plate in the upper and lower connecting pipes, reducing the overall water pressure in the box body. At the same time, the water flow flows from the first group of filter cartridges to the second group of filter cartridges. After the water pressure at the outlet is normal, rotate the screw cap on the top of the first group of filter cartridges and take out the filter element to be replaced in the first group of filter cartridges. Then, while installing the screw cap, start the solenoid valve on the flushing pipe to discharge clean water, flush the filter screen outside the sleeve, and discharge the flushing sewage through the sewage pipe. Then, put in a new filter element.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, for the PP cotton filter element that is frequently replaced in the water purifier, water body-assisted impurity interception is carried out. By installing a locking mechanism in the housing where the PP cotton filter element is placed in the first group of filter cartridges, when the PP cotton filter element is installed, the pressing sleeve on the limiting column is pressed down, causing the sleeve to move while using the pressing ring to extrude the PP laminations sleeved on the outside. During the subsequent water inlet process, the fitting PP laminations complete the preliminary interception of impurities in the water body, and then are discharged through the PP cotton filter element, thereby slowing down the pollution of the PP cotton filter element by impurities and extending the service life of the PP cotton filter element in the water purifier. At the same time, when the PP cotton filter element is replaced, the PP laminations can use the extrusion of the counterweight ball on the stainless steel rotating arm II to complete the upward movement of the entire sleeve in the housing, causing the pressing ring to disengage from the extrusion of the PP laminations, and after the flushing pipe enters water, complete the flushing of the loose PP laminations, wash off the impurities between the PP laminations and discharge them along the sewage pipe, realizing self-cleaning of the PP lamination impurity interception mechanism.

[0019] In the present invention, by setting the first group of filter cartridges and the second group of filter cartridges to form two water purification routes in the water purifier housing, and when the filter element of the water purifier is replaced, the water purification pipeline is switched. Rotate the first knob or the second knob in the housing, drive the rotation of the turntable while using the connecting rod to pull the sleeve rod to move, thereby driving the rotation of the rotating shaft on the connecting pipe, realizing the angle adjustment of the sealing plates on both sides in the connecting pipe, controlling the water flow direction, and facilitating the replacement of the filter elements in the first group of filter cartridges and the second group of filter cartridges without shutdown. Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure of the water purifier with filtering and separation functions according to the present invention;

[0021] Figure 2 Schematic diagram of the connection structure between the first filter housing group and the second filter housing group of the present invention;

[0022] Figure 3 Schematic diagram of the installation structure of the locking mechanism inside the first filter housing group of the present invention;

[0023] Figure 4 Schematic diagram of the extrusion structure of the PP laminates by the upper pressing ring on the sleeve of the present invention;

[0024] Figure 5 Schematic diagram of the connection structure between the sleeve rod and the rotating rod on the communicating pipe of the present invention;

[0025] Figure 6 Schematic diagram of the top view sectional structure of the communicating pipe of the present invention;

[0026] Figure 7 Schematic diagram of the hose connection structure between the drain ports on the communicating pipe of the present invention.

[0027] In the figure: 1. Box body; 2. First filter housing group; 3. Second filter housing group; 4. Screw cap; 5. Knob 1; 6. Knob 2; 7. Pressing column; 8. Locking mechanism; 801. Sleeve; 802. Pressing ring; 803. Filter screen; 804. Drain hole; 805. Pressing sleeve; 806. Stainless steel rotating arm 1; 9. Limit post; 10. Stainless steel rotating arm 2; 11. Counterweight ball; 12. PP laminate; 13. PP cotton filter element; 14. Communicating pipe; 15. Rotating shaft; 16. Rotating rod; 17. Drain port; 18. Sleeve rod; 19. Turntable; 20. Connecting rod; 21. Sealing plate; 22. Flushing pipe; 23. Sewage pipe. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-7 , the present invention provides a technical solution:

[0030] Embodiment 1: A water purifier is a water treatment device that deeply filters and purifies water quality according to the usage requirements of water. Its core is the filter membrane in the filter element device. In common water purifiers, the installed filter elements need to be replaced regularly, and different filter elements have different replacement frequencies. Therefore, for the PP cotton filter element 13 with the highest replacement frequency, auxiliary stain interception is carried out. A plurality of interception nets composed of PP laminates 12 are sleeved around it to intercept sludge, sand and gravel in the water body at the initial stage of water inlet first. When the PP cotton filter element is replaced subsequently, the PP laminates 12 are automatically loosened and flushed to achieve self-cleaning and extend the overall service life of the PP cotton filter element 13;

[0031] As Figure 1 and Figure 2 shown, a first filter housing group 2 and a second filter housing group 3 are arranged in the water purifier box body 1. Among them, each of the first filter housing group 2 and the second filter housing group 3 includes four housings, and a PP cotton filter element 13, a granular activated carbon filter element, a post-activated carbon filter element and an ultrafiltration membrane filter element are installed in sequence from left to right. The two are independent of a water purification pipeline. At the same time, the same-function filter elements on the first filter housing group 2 and the second filter housing group 3 are connected by two connecting pipes 14 to facilitate the switching of the water flow direction;

[0032] Since the PP cotton filter element 13 is at the front end of the water inlet and is used to remove coarser particulate impurities, sludge, colloids, suspended substances, etc. in the water, an auxiliary protection mechanism is installed in the housings of the first filter housing group 2 and the second filter housing group 3 where it is placed. As Figure 3 shown, taking the front housing of a single first filter housing group 2 as an example, a locking mechanism 8 is installed in its housing. The main body of the locking mechanism 8 is a sleeve 801, and the sleeve 801 is slidably connected to the inner wall of the first filter housing group 2. The PP cotton filter element 13 is placed in the sleeve 801, and the entire sleeve 801 and the PP cotton filter element 13 are pressed by a pressure column 7 installed at the bottom of the screw cap 4. The water flow entering from the top of the first filter housing group 2 flows along the inner wall to the middle of the sleeve 801. A filter screen 803 is installed on the outer wall of the middle of the sleeve 801. The water flow passing through the filter screen 803 starts to contact the PP cotton filter element 13, and then passes through the PP cotton filter element 13 and comes to the bottom of the housing of the first filter housing group 2 from the drain hole 804 at the bottom of the sleeve 801, and then enters the housing of another first filter housing group 2 along the connecting hose to start contacting the granular activated carbon filter element;

[0033] Since only the first filter housing group 2 and the second filter housing group 3 equipped with the PP cotton filter element 13 are installed with the locking mechanism 8, the filter elements in the remaining housings are normally installed in cooperation with the liquid discharge port 17, and the filter elements are also replaced by opening the screw cap 4;

[0034] Since it involves the auxiliary impurity interception of the PP cotton filter element 13, a limiting column 9 is installed on the inner wall of the bottom of the housing of the first filter housing group 2. As Figure 4As shown in the figure, the pressing sleeve 805 fixedly connected to the bottom of the sleeve 801 is sleeved with the limit post 9. The PP stack 12 for intercepting impurities is sleeved on the filter screen 803 in the middle of the sleeve 801. A pressing ring 802 is fixedly connected to the outer wall of the sleeve 801 and on top of the PP stack 12. When the PP cotton filter element 13 is installed in the sleeve 801, the whole sleeve 801 descends. At this time, the pressing ring 802 begins to contact the stacked PP stacks and presses them tightly against the inner wall of the first filter housing group 2. At the same time, it prevents water from directly discharging through the sliding gap between the sleeve 801 and the inner wall. A sealing gasket is sleeved on the bottommost PP stack 12. After the PP cotton filter element 13 abuts against the sleeve 801, the combination and locking of multiple groups of PP stacks 12 around the sleeve 801 are completed. At this time, water needs to contact the PP stack 12 first before it can contact the PP cotton filter element 13 in the sleeve 801. And some solid impurities in the water body are intercepted by the PP stack 12, reducing the impurity content of the water body around the PP cotton filter element 13. Therefore, the service life of the whole PP cotton filter element 13 is extended;

[0035] Considering the reset problem of the sleeve 801 when replacing the PP cotton filter element 13, as Figure 4 shown in the figure, the second stainless steel rotating arm 10 is symmetrically installed on the limit post 9. The second stainless steel rotating arm 10 is movably connected to the limit post 9. At the same time, a counterweight ball 11 is fixedly connected to the long arm side. The counterweight ball 11 is also made of food-grade 304 stainless steel. And the first stainless steel rotating arm 806 is symmetrically and movably connected to the pressing sleeve 805. And the first stainless steel rotating arm 806 is movably connected to the second stainless steel rotating arm 10. After the PP cotton filter element 13 is installed, the descending sleeve 801 drives the pressing sleeve 805 to move on the limit post 9, causing the first stainless steel rotating arm 806 to push the counterweight ball 11 on the second stainless steel rotating arm 10 to unfold and lift. Thus, the gravity of the counterweight ball 11 always gives an upward thrust to the sleeve 801 and gives pressure to the sealing gasket at the sliding connection position between the sleeve 801 and the first filter housing group 2, improving the overall sealing strength inside the first filter housing group 2;

[0036] And when the whole PP cotton filter element 13 is taken out of the sleeve 801, the sleeve 801 without the limit of the pressing post 7 at the bottom of the screw cap 4 rotates the second stainless steel rotating arm 10 under the action of the gravity of the counterweight ball 11, thereby pushing the pressing sleeve 805 connected to the first stainless steel rotating arm 806 to move upward. At the same time, the pressing ring 802 on the whole sleeve 801 disengages from the extrusion of the combined PP stacks 12, causing the PP stacks 12 to become loose. The sludge intercepted between the PP stacks 12 can be washed. At this time, the screw cap 4 on the first filter housing group 2 from which the PP cotton filter element 13 is taken out is installed. Without the limit of the PP cotton filter element 13, the counterweight ball 11 presses down and causes the sleeve 801 to move upward. At this time, as Figure 2As shown, the solenoid valve installed on the washing pipe 22 on the outer wall of the first filter housing group 2 is opened, and the side branch pipe of the drain pipe starts to drain water into the first filter housing group 2. The water flow begins to contact the loose PP laminations 12. During the water flow process, the impurities in the gaps between the PP laminations 12 are flushed away together and discharged along the sewage pipe 23 on the first filter housing group 2, completing the self-cleaning of the PP laminations 12. Subsequently, the entire new PP cotton filter element 13 is installed again.

[0037] Embodiment 2: Considering the cumbersome problem of replacing the filter elements of the water purifier and the inability to replace the filter elements without shutting down the machine, for this reason, two filter pipelines of the first filter housing group 2 and the second filter housing group 3 are installed in the present invention, and the water circuit is switched when replacing the filter elements in one pipeline to ensure the continuous water output of the water purifier;

[0038] For this reason, as Figure 1 shown, when the top cover of the entire box body 1 is in the open state, there are a first knob 5 and a second knob 6. Among them, the control of the first knob 5 is used to replace the PP cotton filter element 13 and the granular activated carbon filter element. The replacement frequencies of the two filter elements are similar, while the control of the second knob 6 is used to replace the remaining ultrafiltration filter element. When only the first knob 5 is rotated, in the initial environment, the first filter housing group 2 participates in the water purification work. At this time, the PP cotton filter element 13 and the granular activated carbon filter element in the front two shells of the first filter housing group 2 are in a stopped filtration state, and the water flow enters the PP cotton filter element 13 and the granular activated carbon filter element in the middle shell of the second filter housing group 3 along the connecting pipe 14, and then returns to the first filter housing group 2 to complete the filtration work of the remaining post-activated carbon filter element and the ultrafiltration membrane filter element;

[0039] If the first knob 5 and the second knob 6 are rotated simultaneously, the water flow pipeline of the first filter housing group 2 will be closed, and the water flow will enter the pipeline of the second filter housing group 3 for filtration work;

[0040] For the filtration switching between the pipeline of the first filter housing group 2 and the pipeline of the second filter housing group 3, the connecting pipes 14 connected to the first filter housing group 2 and the second filter housing group 3 of the same functional filter element are as Figure 5 shown. A rotating shaft 15 is symmetrically movable between the upper and lower connecting pipes 14. A sealing plate 21 capable of sealing the water body is installed in the connecting pipe 14, and the sealing plate 21 is connected to the rotating shaft 15. Therefore, by rotating the rotating shaft 15, the adjustment of the sealing plate 21 in the connecting pipe 14 can be realized, and the control of the water flow direction of the connecting pipe 14 can be completed;

[0041] A rotating rod 16 is sleeved and fixed on the rotating shaft 15, and the "T"-shaped sleeve rod 18 sliding between the box bodies 1 is clamped with the protrusion on the rotating rod 16. A turntable 19 is sleeved and fixed on the shafts of the first knob 5 and the second knob 6, and the connecting rod 20 movably connected to the turntable 19 is movably connected to the sleeve rod 18. Therefore, by rotating the first knob 5 and the second knob 6, the position of the sleeve rod 18 can be adjusted, thereby driving the rotation of the rotating rod 16 sleeved on the rotating shaft 15 and completing the adjustment of the angle of the sealing plate 21 in the connecting pipe 14;

[0042] When adjusting the angle of the sealing plate 21 in the connecting pipe 14, since the connecting pipe 14 is in a single-pass state under normal conditions, when rotating the sealing plate 21, it is necessary to ensure that the connected side is closed and the closed side is opened. Combining Figure 5 and Figure 6 , when rotating the first knob 5, the sealing plate 21 on the side of the first filter housing group 2 of the connecting pipe 14 is opened, while the sealing plate 21 on the second filter housing group 3 starts to close. Finally, after rotating a certain angle, the pipeline sealing of the connecting pipe 14 flowing to the second filter housing group 3 is completed. When switching the water flow pipeline, the water pressure at the front end of the entire water purifier decreases and the water flow rate decreases. After the switching of the sealing plate 21 is completed, the water pressure inside the box 1 returns to normal at this time. Therefore, it is possible to understand whether the sealing plate 21 completely seals the connecting pipe 14 by monitoring the change in the water pressure inside the box 1 during the adjustment of the pipeline water flow.

[0043] The working process and principle of the present invention are as follows:

[0044] For the two groups of filter housings installed on the box 1, four filter housings in the same row form a water purification unit, and a single water purification unit works. The external pipeline is connected to the drain port 17 on the upper row of the connecting pipe 14. The water flow first enters the single-side water purification unit through the connecting pipe 14. The water flow starts to contact the PP cotton filter element 13 in the first filter housing group 2. A sleeve 801 is installed outside the PP cotton filter element 13, and a plurality of PP laminations 12 are sleeved on the outer wall of the sleeve 801. The water flow first contacts the pressed PP laminations 12 and then contacts the PP cotton filter element 13 in the sleeve 801. Subsequently, the water flow flows into the bottom connecting pipe 14 through the drain hole 804 and starts to enter the first granular activated carbon filter housing group 2. After passing over the upper connecting pipe 14, it enters the post-activated carbon filter element again. Finally, the water flow is discharged through the ultrafiltration membrane filter element;

[0045] After setting the filter element replacement time, an automatic alarm reminder is given. According to the type of filter element to be replaced, rotate the first knob 5 on the box 1. The rotation of the first knob 5 drives the rotation of the sealing plate 21 in the upper and lower connecting pipes 14, so that the overall water pressure inside the box 1 decreases. At the same time, the water flow flows from the first filter housing group 2 to the second filter housing group 3. After the water pressure at the outlet is normal, rotate the screw cap 4 at the top of the first filter housing group 2, take out the filter element to be replaced in the first filter housing group 2, and then start the solenoid valve on the flushing pipe 22 while installing the screw cap 4, discharge clean water, flush the filter screen 803 outside the sleeve 801, and discharge the flushing sewage through the sewage discharge pipe 23. Then put in a new filter element to complete the replacement of the water purifier filter element.

[0046] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the scope defined by the structure of the invention, it should fall within the protection scope of the present invention.

[0047] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention.

Claims

1. A water purifier with filtering and separation function, comprising a housing (1), characterized in that: The housing (1) has filter housing group 1 (2) and filter housing group 2 (3) symmetrically installed in it. The filter housing group 1 (2) and the filter housing group 2 (3) are symmetrically connected to each other by a connecting pipe (14) on opposite sides. The filter housing group 1 (2) and the filter housing group 2 (3) each include four housings, and are respectively installed with a PP cotton filter element (13), a granular activated carbon filter element, a post-activated carbon filter element and an ultrafiltration membrane filter element from left to right, and the two form an independent water purification pipeline; A limiting column (9) is fixedly connected to the inner wall of the bottom of the shell on which the PP cotton filter element (13) is installed. The limiting column (9) is sleeved with a locking mechanism (8) in sliding connection. The locking mechanism (8) comprises a sleeve (801) and a pressing sleeve (805). The outer wall of the limiting column (9) is sleeved with a pressing sleeve (805) in sliding connection. The sleeve (801) is fixed to one side of the top of the pressing sleeve (805) by welding. A pressing ring (802) is sleeved and fixed to the outer wall of the sleeve (801) by welding. A filter screen (803) is installed on the sleeve (801). Drainage holes (804) are evenly opened on the sleeve (801) located at the bottom of the filter screen (803). The pressing sleeve (805) The outer walls on both sides are symmetrically rotatably connected to a stainless steel rotating arm 1 (806); a PP cotton filter element (13) is installed in the sleeve (801); the outer wall of the sleeve (801) is evenly sleeved with a PP laminate (12) that is slidably connected; a flushing pipe (22) and a sewage pipe (23) are installed on the housing on which the PP cotton filter element (13) is installed, and a solenoid valve is installed on the flushing pipe (22) and the sewage pipe (23); a stainless steel rotating arm 2 (10) is symmetrically rotatably connected to the outer wall section of the limit column (9); a counterweight ball (11) is fixed to one end of the stainless steel rotating arm 2 (10) by welding, and the other end of the stainless steel rotating arm 2 (10) is movably connected to the end of the stainless steel rotating arm 1 (806).

2. The water purifier with filtering and separation function according to claim 1, characterized in that: The tops of the filter housing group 1 (2) and the filter housing group 2 (3) are threadedly connected with a screw cap (4), and the top inner wall of the screw cap (4) is fixedly connected with a pressure column (7).

3. The water purifier with filtering and separation function according to claim 2, characterized in that: A liquid discharge port (17) is provided on one side of the connecting tube (14), and the liquid discharge port (17) on the connecting tube (14) is connected via a hose. A sealing plate (21) is symmetrically and movably connected inside the two connecting tubes (14). A rotating shaft (15) is movably connected to opposite surfaces of the two connecting tubes (14), and both ends of the rotating shaft (15) penetrate the outer wall of the connecting tube (14) and are sleeved and fixed to the sealing plate (21). A knob 1 (5) and a knob 2 (6) are symmetrically and movably connected to the box body (1).

4. The water purifier with filtering and separation function according to claim 3, characterized in that: A rotating disk (19) is sleeved and fixed on the central axis of the knob 1 (5) and the knob 2 (6), and connecting rods (20) are symmetrically rotatably connected on both sides of the rotating disk (19). A sleeve rod (18) is slidably connected in the box body (1), and a rotating rod (16) is sleeved and fixed on the outer wall of the rotating shaft (15).

5. The water purifier with filtering and separation function according to claim 4, characterized in that: The sleeve rod (18) is engaged with protrusions on the two rotating rods (16), and one end of the connecting rod (20) is movably connected to one side of the sleeve rod (18) accordingly.

6. The water purifier with filtering and separation function according to claim 5, characterized in that: The usage of the water purifier with filtering and separation function is as follows: Flow drainage: For two groups of filter shells installed on the box body (1), four filter shells in the same row form a water purification unit. When a single water purification unit is working, an external pipe is connected to the drainage port (17) on the connecting pipe (14). Water first enters the single-side water purification unit through the connecting pipe (14). A sleeve (801) is installed on the outside of the PP cotton filter element (13). The outer wall of the sleeve (801) is sleeved with a plurality of PP laminates (12). The water first contacts the compressed PP laminates (12) and then contacts the PP cotton filter element (13) in the sleeve (801). Subsequently, the water flows from the drainage hole (804) into the bottom connecting pipe (14) and begins to enter the granular activated carbon filter element. After overflowing the top connecting pipe (14), it enters the post-activated carbon filter element again. Finally, the water flows out through the ultrafiltration membrane filter element. Replacement of filter element without stopping the machine: according to the type of filter element to be replaced, the knob 1 (5) located on the housing (1) is rotated. The rotation of the knob 1 (5) drives the sealing plate (21) in the upper and lower connecting pipes (14) to rotate, so that the overall water pressure in the housing (1) is reduced. At the same time, water flows from the filter housing group 1 (2) to the filter housing group 2 (3). After the water pressure at the water outlet is normal, the screw cap (4) located on the top of the filter housing group 1 (2) is rotated, and the filter element to be replaced in the filter housing group 1 (2) is taken out. The screw cap (4) is then installed and the solenoid valve located on the flushing pipe (22) is activated to discharge clean water to flush the filter screen (803) outside the sleeve (801), and the sewage after flushing is discharged through the sewage pipe (23), and then a new filter element is put in.

Images