Multi-filtration water purifier

Abstract

The invention relates to the technical field of water purifier processing, in particular to a multi-filtering water purifier which comprises a water purifier shell and a PP filtering mechanism, and the PP filtering mechanism comprises a filtering bottle body, a filter element arranged in the filtering bottle body and an end cover arranged at the top of the filtering bottle body. The PP filtering mechanism further comprises two groups of water path blocking assemblies arranged at the bottom of the inner side of the filtering bottle body and used for controlling the on-off of the water inlet and outlet paths; and the bottom of the end cover is fixedly connected with a jacking water guide assembly and a central jacking rod. The two waterway blocking assemblies are arranged at the water inlet and the water outlet of the filtering bottle body, when the end cover is installed at the top of the filtering bottle body, the two waterway blocking assemblies can be jacked and pressed to be opened, then a waterway is communicated, and when the end cover is separated along the top of the filtering bottle body, the two waterway blocking assemblies can be reset and closed to block the waterway. The filter element can be rapidly replaced without closing a water source, and meanwhile water overflow caused by the fact that other filter bottles or pipelines are under pressure can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, and particularly to a multi-filter water purifier. Background Art

[0002] A water purifier filters impurities, bacteria, harmful substances, etc. in tap water through one or more filters, so that the water meets the required usage or drinking standards. Common water purifiers generally have three filters: a PP cotton pre-filter, a reverse osmosis membrane filter, and a post-activated carbon filter; the PP cotton pre-filter is used to filter out larger particulate impurities in water, the reverse osmosis membrane filter is used to filter out tiny substances such as bacteria and harmful substances in water, and the post-activated carbon filter can improve the taste of water.

[0003] For example, Chinese Patent No. CN208660504U discloses a filter bottle for a water purifier, which includes a filter bottle and a filter bottle cap. The outer wall of the open end of the filter bottle is provided with multiple groups of female screw teeth that are evenly and spaced from each other. Each group of female screw teeth includes multiple female screw tooth grooves arranged at equal intervals along the length direction of the filter bottle. The gap width between adjacent groups of female screw teeth is greater than the length of a single female screw tooth groove. The inner wall of the inner hole of the filter bottle cap is provided with multiple groups of male screw teeth that correspond to the female screw teeth one by one in groups. Each group of male screw teeth includes multiple male screw tooth strips arranged at equal intervals along the length direction of the filter bottle. This application has the effect of good firmness and sealing performance between the filter bottle cap and the filter bottle.

[0004] In the prior art such as the above patent, its water purifier filter bottle is composed of a filter bottle body, an end cap, and a filter element. The bottom of the filter bottle body is provided with an inlet and an outlet to realize the connection of the water circuit, and the replacement of the filter element inside the filter bottle body can be realized through the top cover. However, no water circuit blocking mechanism is provided on its inlet and outlet. When replacing the filter element, the main water inlet valve needs to be closed, and it is impossible to quickly replace the filter element without turning off the water source; in addition, even after the main water inlet valve is closed, since other filter bottles and pipelines are still under pressure and the filter bottles are interconnected, there is still a probability that water will overflow from one of the filter bottles when replacing the filter element in one of the filter bottles. Therefore, there is an urgent need for a multi-filter water purifier to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-filter water purifier to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A multi-filter water purifier includes a water purifier housing and a PP filtering mechanism. The PP filtering mechanism includes a filtering bottle body, a filter element disposed inside the filtering bottle body, an end cap disposed on the top of the filtering bottle body. The PP filtering mechanism further includes two groups of water circuit blocking components disposed at the inner bottom of the filtering bottle body for controlling the on-off of the inlet and outlet water circuits. A top pressure water guiding component and a central ejector rod are fixedly connected to the bottom of the end cap. After the end cap is installed on the top of the filter bottle body, the two water path blocking components can be respectively pressed by the top pressure water guiding component and the central ejector rod, so that the two water path blocking components are opened to connect the inlet and outlet water paths; when the end cap is separated from the top of the filter bottle body, the two water path blocking components can be reset to block the inlet and outlet water paths; the top pressure water guiding component can uniformly filter and guide the water inlet direction.

[0007] Preferably, the top pressure water guiding component is sleeved outside the filter element, and the inner ring of the top pressure water guiding component is attached to the outer wall of the filter element, and the outer ring is attached to the inner wall of the filter bottle body.

[0008] Preferably, the top pressure water guiding component includes a top pressure ring, a water guiding spiral strip is fixedly connected to the top of the top pressure ring, a water outlet groove is formed in the top of the top pressure ring, and a hollow water inlet hole is formed in the bottom, and the water outlet groove and the water guiding spiral strip are distributed alternately.

[0009] Preferably, after the end cap is installed on the top of the filter bottle body, the hollow water inlet hole can be docked with a water path blocking component, so that the inlet water enters the top pressure ring along the hollow water inlet hole and is discharged along the water outlet groove.

[0010] Preferably, the filter element is clamped in the middle of the inner side of the filter bottle body, one water path blocking component is located in the middle of the bottom end of the filter element, and the other water path blocking component is located on one side of the bottom end of the filter element away from the center.

[0011] Preferably, the water path blocking component includes a connecting seat, a sealing ring rod and a sealing seat cooperating with the sealing ring rod are arranged inside the connecting seat. By adjusting the relative positions of the sealing ring rod and the sealing seat, the on-off of the connecting seat can be controlled. A lower sealing ring is glued to the sealing ring rod, and an upper sealing ring cooperating with the lower sealing ring is glued to the sealing seat.

[0012] Preferably, the water path blocking component further includes a rotary driving component. When the sealing ring rod moves axially, its rotation can be restricted by the rotary driving component.

[0013] Preferably, a top ejector rod is arranged inside the sealing ring rod, and a plugging and cleaning component is arranged on the circumferential side of the sealing ring rod. When the sealing ring rod moves downward, the top ejector rod can eject the plugging and cleaning component along the circumferential side of the sealing ring rod and plug it between the lower sealing ring and the upper sealing ring.

[0014] Preferably, the plugging and cleaning component includes a plugging arm which is plugged on the sealing ring rod, cleaning scrapers are clamped at the top and bottom of the plugging arm, and a top pressure spring is clamped inside the cleaning scraper.

[0015] Preferably, after the plugging arm is clamped between the lower sealing ring and the upper sealing ring, the cleaning scraper at the top can be pressed against the upper sealing ring by the top pressure spring, and the cleaning scraper at the bottom can be pressed against the lower sealing ring by the top pressure spring.

[0016] In the above technical solution, the beneficial effects of the present invention are as follows: 1. By arranging two sets of waterway blocking components at the water inlet and outlet positions of the filter bottle body, when the end cover is installed on the top of the filter bottle body, the two sets of waterway blocking components can be pressed to open, thereby opening the waterway. When the end cover is separated from the top of the filter bottle body, the two sets of waterway blocking components can be reset and closed to block the waterway, realizing the quick replacement of the filter element without turning off the water source, and at the same time avoiding water overflow caused by the pressure of other filter bottles or pipelines.

[0017] 2. When the top pressure water guiding component is installed inside the filter bottle body, it can press the waterway blocking component to open and open the waterway. At the same time, the water can enter the top pressure ring along the hollow water inlet holes and be discharged along the multiple water outlet grooves. Restricted by the water guiding spiral strips, the water flows along the circumference of the filter element in a spiral form. While ensuring the water inlet filtration, the water can completely flow through the surface of the filter element, improving the comprehensive utilization rate of the filter element. Moreover, the water flowing in a spiral shape can wash the surface of the filter element to clean the impurities filtered out on the surface of the filter element.

[0018] 3. When the on-off adjustment of the connecting seat by the sealing ring rod moves axially, the rotation driving component is used to limit the sealing ring rod to rotate synchronously. During the downward movement of the sealing ring rod, the plugging and cleaning component can be restricted by the ejector rod and ejected along the circumference of the sealing ring rod, and is inserted between the sealing surfaces of the lower sealing ring and the upper sealing ring. When the sealing ring rod rotates, it drives the plugging and cleaning component to rotate to clean the sealing surfaces of the lower sealing ring and the upper sealing ring, ensuring the cleanliness of the sealing surfaces, and thus ensuring the effect of waterway blocking.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic exploded view of the housing of the water purifier of the present invention; Figure 2 Schematic structural diagram of the combined housing of the water purifier of the present invention; Figure 3 Schematic structural diagram of multiple groups of filtering mechanisms of the present invention after being installed on the housing of the water purifier; Figure 4 Schematic structural diagram of the exterior of the PP filtering mechanism of the present invention; Figure 5 Schematic sectional structural diagram of the PP filtering mechanism of the present invention; Figure 6 Schematic structural diagram of the overall top pressure water guiding component of the present invention; Figure 7 Schematic structural diagram of the bottom of the top pressure ring of the present invention; Figure 8 Schematic sectional structural diagram of the water path blocking component of the present invention; Figure 9 Schematic structural diagram of the initial contact between the plug-in cleaning component and the ejector rod of the present invention; Figure 10 Schematic structural diagram of the installation position of the sealing ring rod inside the connecting seat of the present invention; Figure 11 Schematic sectional structural diagram of a part of the plug-in cleaning component of the present invention.

[0023] Explanation of reference numerals in the drawings: In the figure: 1. Housing of the water purifier; 2. PP filtering mechanism; 21. Filter bottle body; 22. End cover; 23. Inlet quick connector; 24. Outlet quick connector; 25. Filter element; 26. Water path blocking component; 261. Connecting seat; 262. Sealing ring rod; 263. Lower sealing ring; 264. Upper sealing ring; 265. Plug-in cleaning component; 2651. Plug-in arm; 2652. Cleaning scraper; 2653. Top pressure spring; 2654. Return spring; 266. Ejector rod; 267. Lower connecting bracket; 268. Upper connecting bracket; 269. Sealing top pressure spring; 27. Top pressure water guiding component; 271. Top pressure ring; 272. Water outlet groove; 273. Hollow inlet hole; 274. Water guiding spiral strip; 28. Central ejector rod. 3. Activated carbon filtering mechanism; 4. RO membrane filtering mechanism. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0025] Please refer to Figures 1-11 , an embodiment of the present invention provides a technical solution: a multi-stage filtration water purifier, including a water purifier housing 1 and a PP filtration mechanism 2, further including an activated carbon filtration mechanism 3 and an RO membrane filtration mechanism 4. The PP filtration mechanism 2, the activated carbon filtration mechanism 3, and the RO membrane filtration mechanism 4 are installed in the water purifier housing 1 through common installation forms such as threads, screws, and buckles in the prior art. The PP filtration mechanism 2, the activated carbon filtration mechanism 3, and the RO membrane filtration mechanism 4 are connected in series. A booster pump is installed between the activated carbon filtration mechanism 3 and the RO membrane filtration mechanism 4. Raw water enters through the inlet of the PP filtration mechanism 2 and is filtered through the PP filtration mechanism 2, the activated carbon filtration mechanism 3, and the RO membrane filtration mechanism 4 in sequence, and finally discharged along the outlet of the RO membrane filtration mechanism 4; The PP filtration mechanism 2 includes a filtration bottle body 21, a filter element 25 arranged inside the filtration bottle body 21, an end cap 22 arranged on the top of the filtration bottle body 21. The PP filtration mechanism 2 further includes two groups of waterway blocking components 26 arranged at the inner bottom of the filtration bottle body 21 for controlling the on / off of the inlet and outlet waterways. A water outlet quick connector 24 and a water inlet quick connector 23 are fixedly installed at the bottom of the filtration bottle body 21. The water outlet quick connector 24 is communicated with the waterway blocking component 26 at the middle position of the bottom end of the filter element 25, and the water inlet quick connector 23 is communicated with the other group of waterway blocking components 26; The bottom of the end cap 22 is fixedly connected with a top pressure water guiding component 27 and a central top rod 28; After the end cap 22 is installed on the top of the filtration bottle body 21, the two groups of waterway blocking components 26 can be respectively pressed by the top pressure water guiding component 27 and the central top rod 28 to open the two groups of waterway blocking components 26 and penetrate the inlet and outlet waterways; After the end cap 22 is separated from the top of the filtration bottle body 21, the two groups of waterway blocking components 26 can be reset to block the inlet and outlet waterways; The top pressure water guiding component 27 can uniformly filter and guide the water inlet direction.

[0026] Specifically, when the end cap 22 is installed in place on the filtration bottle body 21, the two groups of waterway blocking components 26 are squeezed and opened by the top pressure water guiding component 27 and the central top rod 28 to penetrate the waterway; When the filter element 25 needs to be replaced, after the end cap 22 is separated from the top of the filtration bottle body 21, the two groups of waterway blocking components 26 can be reset and closed to block the waterway, realizing the quick replacement of the filter element 25 without turning off the water source; When the top pressure water guiding component 27 is installed inside the filtration bottle body 21, it can press the waterway blocking component 26 to open and penetrate the waterway. At the same time, water enters the top pressure ring 271 along the hollow water inlet hole 273 and is discharged along a plurality of water outlet grooves 272. Restricted by the water guiding spiral strip 274, the water inlet flows in a spiral form along the circumferential side of the filter element 25, so that the water inlet can completely flow through the surface of the filter element 25.

[0027] Compared with the prior art, in the embodiment of the present invention, two sets of waterway blocking components 26 are arranged at the water inlet and outlet positions of the filter bottle body 21. When the end cover 22 is installed on the top of the filter bottle body 21, the two sets of waterway blocking components 26 can be pressed to open, thereby connecting the waterway. When the end cover 22 is detached from the top of the filter bottle body 21, the two sets of waterway blocking components 26 can be reset and closed to block the waterway, realizing the quick replacement of the filter element 25 without turning off the water source, and at the same time, it can also prevent water from overflowing due to the pressure in other filter bottles or pipelines; when the top pressure water guiding component 27 is installed inside the filter bottle body 21, it can press the waterway blocking component 26 to open and connect the waterway. At the same time, the incoming water can enter the top pressure ring 271 along the hollow water inlet hole 273 and be discharged along a plurality of water outlet grooves 272. Restricted by the water guiding spiral strip 274, the incoming water flows in a spiral form along the circumferential side of the filter element 25. While ensuring the filtration of the incoming water, the incoming water can completely flow through the surface of the filter element 25, improving the comprehensive utilization rate of the filter element 25, and the incoming water flowing in a spiral shape can wash the surface of the filter element 25 to clean the impurities filtered out on the surface of the filter element 25.

[0028] In an embodiment provided by the present invention, the top pressure water guiding component 27 is sleeved outside the filter element 25, and the inner ring of the top pressure water guiding component 27 fits with the outer wall of the filter element 25, and the outer ring fits with the inner wall of the filter bottle body 21. Specifically, the raw water entering along the water inlet quick connector 23 can be guided by the top pressure water guiding component 27 and flow in a spiral shape on the surface of the filter element 25, so that the incoming water can completely flow through the surface of the filter element 25, and the top pressure water guiding component 27 can also limit the position of the filter element 25 to prevent the filter element 25 from being bent due to extrusion during installation.

[0029] In another embodiment provided by the present invention, the top pressure water guiding component 27 includes a top pressure ring 271. A water guiding spiral strip 274 is fixedly connected to the top of the top pressure ring 271. Water outlet grooves 272 are formed at the top of the top pressure ring 271, and a hollow water inlet hole 273 is formed at the bottom. The water outlet grooves 272 and the water guiding spiral strip 274 are staggered. Specifically, one end of the water guiding spiral strip 274 away from the top pressure ring 271 is fixedly connected to the end cover 22. The number of the water outlet grooves 272 is the same as that of the water guiding spiral strip 274. The raw water entering along the hollow water inlet hole 273 can be discharged along a plurality of water outlet grooves 272. Since the inner ring of the water guiding spiral strip 274 is tangent to the filter element 25 and the outer ring is tangent to the inner wall of the filter bottle body 21, the incoming water can only flow in the flow channel formed by the water guiding spiral strip 274, the filter element 25, and the inner wall of the filter bottle body 21. By guiding the incoming water through the water guiding spiral strip 274, the incoming water flows in a spiral form along the circumferential side of the filter element 25 to wash the surface of the filter element 25 and clean the impurities filtered out on the surface of the filter element 25.

[0030] In another embodiment provided by the present invention, after the end cap 22 is installed on the top of the filter bottle body 21, the hollow water inlet hole 273 can be docked with a group of water path blocking components 26, so that the incoming water enters the top pressing ring 271 along the hollow water inlet hole 273 and is discharged along the water outlet groove 272. Specifically, when the end cap 22 is installed on the top of the filter bottle body 21, a group of water path blocking components 26 communicated with the water inlet quick connector 23 can be squeezed by the top pressing ring 271 to open it. At the same time, after the end cap 22 is installed in place, the hollow water inlet hole 273 can achieve precise docking with the top outlet of the water path blocking component 26, so that the raw water discharged from a group of water path blocking components 26 communicated with the water inlet quick connector 23 can enter the top pressing ring 271 through the hollow water inlet hole 273 and is finally discharged along the water outlet groove 272; the hollow water inlet hole 273 is set in a hollow form to ensure the incoming water while squeezing the sealing ring rod 262.

[0031] In another embodiment provided by the present invention, the filter element 25 is snap-connected to the middle inside the filter bottle body 21. A group of water path blocking components 26 are located in the middle at the bottom end of the filter element 25, and another group of water path blocking components 26 are located on one side of the bottom end of the filter element 25 away from the center. Specifically, a group of water path blocking components 26 are located on one side of the bottom end of the filter element 25 away from the center and are communicated with the water inlet quick connector 23 to be responsible for the incoming raw water, and another group of water path blocking components 26 are located in the middle at the bottom end of the filter element 25 and are communicated with the water outlet quick connector 24 to be responsible for discharging the filtered raw water. A bearing platform is also threadedly connected to the water path blocking component 26 located in the middle at the bottom end of the filter element 25 to support the filter element 25.

[0032] In another embodiment provided by the present invention, the water path blocking component 26 includes a connection seat 261. Inside the connection seat 261, there is a sealing ring rod 262 and a sealing seat that cooperates with the sealing ring rod 262. Adjusting the relative positions of the sealing ring rod 262 and the sealing seat can control the on-off of the connection seat 261. A lower sealing ring 263 is glued to the sealing ring rod 262, and an upper sealing ring 264 that cooperates with the lower sealing ring 263 is glued to the sealing seat. Specifically, a sealing top pressure spring 269 is sleeved below the outside of the sealing ring rod 262, and when it resets, it can squeeze the lower sealing ring 263 and the upper sealing ring 264 to improve the sealing performance at the contact position between the sealing ring rod 262 and the sealing seat; when the end cap 22 is opened to replace the filter element 25, the top pressure water guiding component 27 and the center ejector rod 28 release the extrusion on the sealing ring rod 262, and the sealing ring rod 262 can reset to squeeze the sealing seat, realizing the closing of the water path blocking component 26, blocking the water path, quickly replacing the filter element 25 without turning off the water source, and at the same time avoiding water overflow caused by other filter bottles or pipelines being pressurized.

[0033] As can be seen from the above embodiments, the lower sealing ring 263 and the upper sealing ring 264 are in contact and sealed under extrusion to block the water passage. However, after long-term use, dirt in the water easily adheres to the mating surface of the lower sealing ring 263 and the upper sealing ring 264, resulting in sealing failure. Therefore, the following embodiments are proposed to solve the above problems.

[0034] In another embodiment provided by the present invention, the water passage blocking assembly 26 further includes a rotation driving component. When the sealing ring rod 262 moves axially, its rotation can be restricted by the rotation driving component. Specifically, the rotation driving component includes a spiral portion provided below the outside of the sealing ring rod 262, and an upper connection bracket 268 fixedly installed below the inner side of the connection seat 261. The sealing ring rod 262 is spirally connected to the upper connection bracket 268 through the spiral portion, and when the sealing ring rod 262 moves axially, it can rotate synchronously.

[0035] In still another embodiment provided by the present invention, a ejector rod 266 is provided inside the sealing ring rod 262, and an insertion cleaning component 265 is provided on the circumferential side of the sealing ring rod 262. When the sealing ring rod 262 moves downward, the ejector rod 266 can eject the insertion cleaning component 265 along the circumferential side of the sealing ring rod 262 and insert it between the lower sealing ring 263 and the upper sealing ring 264. Specifically, a lower connection bracket 267 located below the upper connection bracket 268 is fixedly installed inside the connection seat 261, and the ejector rod 266 is fixedly installed on the lower connection bracket 267. The sealing ring rod 262 is movably sleeved on the ejector rod 266; when the sealing ring rod 262 is extruded and moves downward, the gap between the lower sealing ring 263 and the upper sealing ring 264 increases, and then the top end of the ejector rod 266 contacts the insertion cleaning component 265. When the sealing ring rod 262 continues to move downward, the insertion cleaning component 265 is pushed out of the circumferential side of the sealing ring rod 262 by the extrusion of the ejector rod 266 and is inserted between the lower sealing ring 263 and the upper sealing ring 264. Since the sealing ring rod 262 rotates synchronously when moving axially, the insertion cleaning component 265 can be driven by the sealing ring rod 262 to rotate to clean the dirt adhering to the mating surface of the lower sealing ring 263 and the upper sealing ring 264.

[0036] In yet another embodiment provided by the present invention, the plug-in cleaning component 265 includes a plug-in arm 2651 which is plugged onto the sealing ring rod 262. Cleaning scrapers 2652 are clamped at both the top and the bottom of the plug-in arm 2651, and a top pressure spring 2653 is clamped inside the cleaning scraper 2652. Specifically, at one end of the plug-in arm 2651 close to the center of the sealing ring rod 262 and at the top end of the ejector rod 266, inclined surfaces are provided which cooperate with each other, ensuring that when the sealing ring rod 262 drives the plug-in cleaning component 265 to move downward, the ejector rod 266 can press against the plug-in cleaning component 265 to push out the plug-in cleaning component 265; the maximum downward travel of the sealing ring rod 262 is based on the highest position of the inclined surface of the plug-in arm 2651 still being at the lowest position of the inclined surface at the top end of the ejector rod 266, to prevent the subsequent difficulty in resetting the plug-in arm 2651; reset springs 2654 are clamped on both sides of the plug-in arm 2651, and clamping grooves cooperating with the plug-in arm 2651 and the reset springs 2654 are provided on the sealing ring rod 262, ensuring the stability of the movement of the plug-in arm 2651. At the same time, when the sealing ring rod 262 resets, an elastic force is applied to the plug-in arm 2651 through the reset springs 2654 to enable the overall reset of the plug-in arm 2651; a sliding groove cooperating with the cleaning scraper 2652 is provided on the plug-in arm 2651, and a baffle is fixedly installed at one end of the plug-in arm 2651 away from the center of the sealing ring rod 262, and the baffle can limit the position of the cleaning scraper 2652.

[0037] In yet another embodiment provided by the present invention, after the plug-in arm 2651 is clamped between the lower sealing ring 263 and the upper sealing ring 264, the cleaning scraper 2652 at the top can be pressed against the upper sealing ring 264 by the top pressure spring 2653, and the cleaning scraper 2652 at the bottom can be pressed against the lower sealing ring 263 by the top pressure spring 2653. Specifically, after the plug-in cleaning component 265 is plugged between the lower sealing ring 263 and the upper sealing ring 264, the sealing ring rod 262 will still move downward. When one end of the plug-in arm 2651 away from the center of the sealing ring rod 262 is plugged between the lower sealing ring 263 and the upper sealing ring 264, the cleaning scraper 2652 completely disengages from the clamping groove of the sealing ring rod 262, and the cleaning scraper 2652 is pushed out by the elastic force of the top pressure spring 2653 and can contact the sealing surface of the lower sealing ring 263 or the upper sealing ring 264. Moreover, during the process of the sealing ring rod 262 driving the plug-in cleaning component 265 to move downward, the position of the cleaning scraper 2652 changes adaptively. When the sealing ring rod 262 drives the cleaning scraper 2652 to rotate, effective cleaning of the sealing surfaces of the lower sealing ring 263 and the upper sealing ring 264 is achieved; the number of the plug-in cleaning components 265 is limited by the axial travel of the sealing ring rod 262, so that after the sealing ring rod 262 moves downward in place, multiple plug-in cleaning components 265 cooperate to achieve comprehensive cleaning of the dirt on the sealing surfaces of the lower sealing ring 263 and the upper sealing ring 264.

[0038] Only certain exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-stage filtration water purifier, comprising a water purifier housing (1) and a PP filtration mechanism (2). The PP filtration mechanism (2) includes a filtration bottle body (21), a filter element (25) disposed inside the filtration bottle body (21), and an end cap (22) disposed on the top of the filtration bottle body (21), characterized in that, The PP filtering mechanism (2) further includes two sets of waterway blocking components (26) arranged at the inner bottom of the filtering bottle body (21) for controlling the on / off of the water inlet and outlet waterways; A top pressure water guiding component (27) and a central top rod (28) are fixedly connected to the bottom of the end cap (22); After the end cap (22) is installed on the top of the filtering bottle body (21), the two sets of waterway blocking components (26) can be respectively pressed by the top pressure water guiding component (27) and the central top rod (28), so that the two sets of waterway blocking components (26) are opened to penetrate the inlet and outlet waterways; after the end cap (22) is separated from the top of the filtering bottle body (21), the two sets of waterway blocking components (26) can be reset to block the inlet and outlet waterways; the top pressure water guiding component (27) can uniformly filter and guide the water inlet direction.

2. The multi-filter water purifier according to claim 1, characterized in that, The top pressure water guiding component (27) is sleeved outside the filter element (25), and the inner ring of the top pressure water guiding component (27) is attached to the outer wall of the filter element (25), and the outer ring is attached to the inner wall of the filtering bottle body (21).

3. The multi-filter water purifier according to claim 1, wherein, The top pressure water guiding component (27) includes a top pressure ring (271). A water guiding spiral strip (274) is fixedly connected to the top of the top pressure ring (271). A water outlet groove (272) is formed at the top of the top pressure ring (271), and a hollowed-out water inlet hole (273) is formed at the bottom. The water outlet groove (272) and the water guiding spiral strip (274) are staggered.

4. The multi-filter water purifier according to claim 3, wherein, After the end cap (22) is installed on the top of the filtering bottle body (21), the hollowed-out water inlet hole (273) can be docked with a set of waterway blocking components (26), so that the inlet water enters the top pressure ring (271) along the hollowed-out water inlet hole (273) and is discharged along the water outlet groove (272).

5. A multi-filter water purifier according to claim 1, characterized in that, The filter element (25) is clamped in the middle inside the filtering bottle body (21). One set of the waterway blocking components (26) is located in the middle at the bottom end of the filter element (25), and the other set of the waterway blocking components (26) is located on one side away from the center at the bottom end of the filter element (25).

6. The multi-filter water purifier according to claim 1, wherein, The waterway blocking component (26) includes a connection seat (261). A sealing ring rod (262) and a sealing seat cooperating with the sealing ring rod (262) are arranged inside the connection seat (261). By adjusting the relative positions of the sealing ring rod (262) and the sealing seat, the on / off of the connection seat (261) can be controlled. A lower sealing ring (263) is glued to the sealing ring rod (262), and an upper sealing ring (264) cooperating with the lower sealing ring (263) is glued to the sealing seat.

7. The multiple-filter water purifier according to claim 6, wherein, The waterway blocking component (26) further includes a rotation driving component. When the sealing ring rod (262) moves axially, its rotation can be restricted by the rotation driving component.

8. The multi-filter water purifier according to claim 7, characterized in that, A top rod (266) is arranged inside the sealing ring rod (262), and an insertion cleaning component (265) is arranged on the circumferential side of the sealing ring rod (262). When the sealing ring rod (262) moves downward, the top rod (266) can push out the insertion cleaning component (265) along the circumferential side of the sealing ring rod (262) and insert it between the lower sealing ring (263) and the upper sealing ring (264).

9. The multi-filter water purifier according to claim 8, characterized in that, The plug-in cleaning component (265) includes a plug-in arm (2651) which is plugged onto the sealing ring rod (262). Cleaning scrapers (2652) are clamped at both the top and the bottom of the plug-in arm (2651), and a pressing spring (2653) is clamped inside the cleaning scraper (2652).

10. A multiple-filter water purifier according to claim 9, characterized in that, After the plug-in arm (2651) is clamped between the lower sealing ring (263) and the upper sealing ring (264), the cleaning scraper (2652) at the top can abut against the upper sealing ring (264) under the pressing of the pressing spring (2653), and the cleaning scraper (2652) at the bottom can abut against the lower sealing ring (263) under the pressing of the pressing spring (2653).

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