A multi-filtration water purifier

Abstract

The present invention relates to the field of water purifier processing technology, specifically a multi-filtration water purifier, including a water purifier housing, a PP filter mechanism, the PP filter mechanism including a filter bottle, a filter element arranged inside the filter bottle, and an end cap arranged on the top of the filter bottle. The PP filter mechanism also includes two groups of water channel blocking components arranged at the bottom of the inner side of the filter bottle, which are used to control the on-off of the inlet and outlet water channels; the bottom of the end cap is fixedly connected to a top pressure water guide component and a central push rod. The present invention arranges two groups of water channel blocking components at the water inlet and outlet positions of the filter bottle. After the end cap is installed on the top of the filter bottle, the two groups of water channel blocking components can be pressed to open them, thereby connecting the water channel. When the end cap is detached along the top of the filter bottle, the two groups of water channel blocking components can be reset and closed to block the water channel, thereby realizing rapid replacement of the filter element without turning off the water source, and also preventing water overflow caused by pressure in other filter bottles or pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, in particular to a multi-filtration water purifier. Background Art

[0002] A water purifier uses one or more filters to remove impurities, bacteria, and harmful substances from tap water, ensuring that the water meets the standards people require for use or drinking. A typical water purifier is equipped with three filters: a PP cotton pre-filter, a reverse osmosis membrane filter, and a post-filter activated carbon. The PP cotton pre-filter removes larger particles of impurities, the reverse osmosis membrane filter removes microscopic particles like bacteria and harmful substances, and the post-filter activated carbon improves the water's taste.

[0003] For example, Chinese patent publication number CN208660504U discloses a water purifier filter bottle, comprising a filter bottle and a filter bottle cap. The filter bottle has multiple groups of female screw threads arranged evenly and spaced apart from each other on the outer wall of the open end. Each group of female screw threads includes multiple female screw grooves arranged equidistantly along the length of the filter bottle. The gap width between adjacent groups of female screw threads is greater than the length of a single female screw groove. The inner wall of the inner hole of the filter bottle cap is provided with multiple groups of male screw threads corresponding to the female screw threads in a one-to-one manner. Each group of male screw threads includes multiple male screw strips arranged equidistantly along the length of the filter bottle. This application achieves a secure connection and good sealing between the filter bottle cap and the filter bottle.

[0004] As in the prior art of the above-mentioned patent, the water purifier filter bottle consists of a filter bottle body, an end cap, and a filter element. The bottom of the filter bottle body is provided with a water inlet and a water outlet to realize the connection of the water path, and the filter element inside the filter bottle body can be replaced through the top cap. However, there is no water path blocking mechanism on the water inlet and outlet. When replacing the filter element, the main water inlet valve needs to be closed, and the filter element cannot be quickly replaced without turning off the water source. In addition, even after the main water inlet valve is closed, since the other filter bottles and pipelines are still pressurized and the filter bottles are interconnected, there is still a probability that water will overflow along the filter bottle when the filter element in one of the filter bottles is replaced. Therefore, a multi-filtration water purifier is urgently needed to solve the above problems. Summary of the Invention

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

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a multi-filtration water purifier, comprising a water purifier housing and a PP filter mechanism, wherein the PP filter mechanism comprises a filter bottle, a filter element disposed inside the filter bottle, and an end cap disposed on the top of the filter bottle; the PP filter mechanism further comprises two sets of water channel blocking assemblies disposed at the bottom inner side of the filter bottle for controlling the on / off of the inlet and outlet water channels;

[0007] The bottom of the end cover is fixedly connected to a top pressure water guide component and a central top rod;

[0008] After the end cover is installed on the top of the filter bottle body, the two groups of water channel blocking components can be pressed respectively through the top pressure water guide component and the central push rod, so that the two groups of water channel blocking components are opened to connect the inlet and outlet water channels; after the end cover is separated from the top of the filter bottle body, the two groups of water channel blocking components can be reset to block the inlet and outlet water channels; the top pressure water guide component can evenly filter and guide the water inlet direction.

[0009] Preferably, the top pressure water guiding component is sleeved on the outside of the filter element, and the inner ring of the top pressure water guiding component is in contact with the outer wall of the filter element, and the outer ring is in contact with the inner wall of the filter bottle.

[0010] Preferably, the top pressure water guide component includes a top pressure ring, the top of the top pressure ring is fixedly connected to a water guide spiral strip, the top of the top pressure ring is provided with a water outlet groove, the bottom is provided with a hollow water inlet hole, and the water outlet groove and the water guide spiral strip are staggered.

[0011] Preferably, after the end cover is installed on the top of the filter bottle body, the hollow water inlet hole can be docked with a set of water channel blocking components, so that the incoming water enters the top pressure ring along the hollow water inlet hole and is discharged along the water outlet groove.

[0012] Preferably, the filter element is clamped in the middle of the inner side of the filter bottle, one group of water channel blocking components is located in the middle of the bottom end of the filter element, and the other group of water channel blocking components is located on the side of the bottom end of the filter element away from the center.

[0013] Preferably, the water channel blocking assembly includes a connecting seat, and a sealing ring rod and a sealing seat that cooperates with the sealing ring rod are provided inside the connecting seat. The relative position of the sealing ring rod and the sealing seat can be adjusted to control the on and off of the connecting seat. A lower sealing ring is glued to the sealing ring rod, and an upper sealing ring that cooperates with the lower sealing ring is glued to the sealing seat.

[0014] Preferably, the water channel blocking assembly further includes a rotation driving component, and the sealing ring rod is restricted from rotating when moving in the axial direction by the rotation driving component.

[0015] Preferably, an ejector rod is provided inside the sealing ring rod, and an insert cleaning component is provided on the circumference of the sealing ring rod. When the sealing ring rod moves downward, the ejector rod can eject the insert cleaning component along the circumference of the sealing ring rod and insert it between the lower sealing ring and the upper sealing ring.

[0016] Preferably, the plug-in cleaning component includes a plug-in arm, which is plugged into the sealing ring rod. The top and bottom of the plug-in arm are both clamped with cleaning scrapers, and the interior of the cleaning scraper is clamped with a pressure spring.

[0017] Preferably, after the plug-in arm is clamped between the lower sealing ring and the upper sealing ring, the top cleaning scraper is pressed by the top pressure spring to resist the upper sealing ring, and the bottom cleaning scraper is pressed by the top pressure spring to resist the lower sealing ring.

[0018] In the above technical solution, the beneficial effects of the present invention are:

[0019] 1. By setting two sets of water channel blocking components at the water inlet and outlet of the filter bottle, when the end cover is installed on the top of the filter bottle, the two sets of water channel blocking components can be pressed to open them, thereby connecting the water channel. When the end cover is detached from the top of the filter bottle, the two sets of water channel blocking components can be reset and closed to block the water channel, so that the filter element can be quickly replaced without turning off the water source, and water overflow caused by pressure in other filter bottles or pipelines can be avoided.

[0020] 2. After the top pressure water guide component is installed inside the filter bottle body, the top pressure water channel blocking component can be opened to connect the water channel. At the same time, the incoming water can enter the top pressure ring along the hollow water inlet hole and be discharged along multiple water outlet grooves. The incoming water is restricted by the water guide spiral strips to flow in a spiral form along the side of the filter element. While ensuring the filtration of the incoming water, the incoming water can completely flow through the surface of the filter element, thereby improving the comprehensive utilization rate of the filter element. The spirally flowing incoming water can flush the surface of the filter element, thereby cleaning the impurities filtered out of the filter element surface.

[0021] 3. When the sealing ring rod moves axially for on-off adjustment of the connecting seat, the sealing ring rod can rotate synchronously by limiting the rotation of the driving component. During the downward movement of the sealing ring rod, the plug-in cleaning component can be restricted by the ejection rod and ejected along the circumference of the sealing ring rod, and inserted between the sealing surfaces of the lower sealing ring and the upper sealing ring. When the sealing ring rod rotates, the plug-in cleaning component is driven to rotate to clean the sealing surfaces of the lower sealing ring and the upper sealing ring, thereby ensuring the cleanliness of the sealing surfaces and thus ensuring the effect of water channel blocking.

[0022] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0023] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1This is a schematic structural diagram of the explosion of the water purifier housing of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the water purifier housing after assembly of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of multiple filter mechanisms after being installed on the water purifier housing of the present invention;

[0028] Figure 4 This is a schematic diagram of the external structure of the PP filter mechanism of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the cross section of the PP filtering mechanism of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall structure of the top pressure water guide assembly of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the bottom of the top pressure ring of the present invention;

[0032] Figure 8 This is a schematic structural diagram of a cross-section of a waterway blocking assembly according to the present invention;

[0033] Figure 9 This is a schematic structural diagram of the present invention when the cleaning component is initially in contact with the ejector rod;

[0034] Figure 10 This is a structural schematic diagram of the installation position of the sealing ring rod in the connecting seat of the present invention;

[0035] Figure 11 It is a structural schematic diagram of a partial cross section of the plug-in cleaning component of the present invention.

[0036] Description of reference numerals:

[0037] In the figure: 1. Water purifier housing; 2. PP filter mechanism; 21. Filter bottle; 22. End cap; 23. Water inlet quick connector; 24. Water outlet quick connector; 25. Filter element; 26. Waterway blocking assembly; 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. Pressing spring; 2654. Return spring; 266. Ejector rod; 267. Lower connecting bracket; 268. Upper connecting bracket; 269. Sealing pressing spring; 27. Pressing water guide assembly; 271. Pressing ring; 272. Water outlet trough; 273. Hollow water inlet hole; 274. Water guide spiral strip; 28. Center ejector rod;

[0038] 3. Activated carbon filtration mechanism; 4. RO membrane filtration mechanism. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] See also Figure 1-11 The embodiment of the present invention provides a technical solution: a multi-filtration water purifier, including a water purifier housing 1, a PP filter mechanism 2, an activated carbon filter mechanism 3 and an RO membrane filter mechanism 4, the PP filter mechanism 2, the activated carbon filter mechanism 3 and the RO membrane filter mechanism 4 are installed in the water purifier housing 1 through common installation forms such as threads, screws, and snaps in the prior art, the PP filter mechanism 2, the activated carbon filter mechanism 3 and the RO membrane filter mechanism 4 are connected at one time, and a booster pump is installed between the activated carbon filter mechanism 3 and the RO membrane filter mechanism 4, the raw water enters along the inlet of the PP filter mechanism 2, and passes through the PP filter mechanism 2, the activated carbon filter mechanism 3 and the RO membrane filter mechanism 4. The filter mechanism 3 and the RO membrane filter mechanism 4 filter, and finally discharge along the outlet of the RO membrane filter mechanism 4; the PP filter mechanism 2 includes a filter bottle body 21, a filter element 25 arranged inside the filter bottle body 21, and an end cap 22 arranged on the top of the filter bottle body 21. The PP filter mechanism 2 also includes two groups of water channel blocking components 26 arranged at the bottom of the inner side of the filter bottle body 21, which are used to control the on-off of the inlet and outlet water channels. A water outlet quick connector 24 and a water inlet quick connector 23 are fixedly installed at the bottom of the filter bottle body 21. The water outlet quick connector 24 is connected to the water channel blocking component 26 at the middle position of the bottom end of the filter element 25, and the water inlet quick connector 23 is connected to another group of water channel blocking components 26;

[0041] The bottom of the end cover 22 is fixedly connected with a top pressure water guide component 27 and a central top rod 28;

[0042] After the end cap 22 is installed on the top of the filter bottle body 21, the two groups of water channel blocking components 26 can be pressed respectively through the top pressure water guide component 27 and the center push rod 28, so that the two groups of water channel blocking components 26 are opened to connect the inlet and outlet water channels; after the end cap 22 is separated from the top of the filter bottle body 21, the two groups of water channel blocking components 26 can be reset to block the inlet and outlet water channels; the top pressure water guide component 27 can evenly filter and guide the water inlet direction.

[0043] Specifically, when the end cover 22 is installed in place in the filter bottle body 21, the two groups of water channel blocking components 26 are squeezed open by the top pressure water guide component 27 and the center push rod 28 to connect the water channel; when the filter element 25 needs to be replaced, after the end cover 22 is detached from the top of the filter bottle body 21, the two groups of water channel blocking components 26 can be reset and closed to block the water channel, so that the filter element 25 can be quickly replaced without turning off the water source; when the top pressure water guide component 27 is installed inside the filter bottle body 21, the top pressure water channel blocking component 26 can be opened to connect the water channel, and at the same time, the incoming water enters the top pressure ring 271 along the hollow water inlet hole 273, and is discharged along multiple water outlet grooves 272. The incoming water is restricted by the water guide spiral strips 274, so that the incoming water flows in a spiral form along the side of the filter element 25, so that the incoming water can completely flow through the surface of the filter element 25.

[0044] Compared with the prior art, the embodiment of the present invention sets two sets of water channel blocking components 26 at the water inlet and water outlet 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 water channel blocking components 26 can be pressed to open them, thereby connecting the water channel. When the end cover 22 is detached from the top of the filter bottle body 21, the two sets of water channel blocking components 26 can be reset and closed to block the water channel, so that the filter element 25 can be quickly replaced without turning off the water source. At the same time, it can also avoid water overflow caused by pressure in other filter bottles or pipelines. When the top pressure water guide component 27 is in the After the filter bottle body 21 is installed, the water channel blocking component 26 can be pressed to open the water channel. 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 multiple water outlet grooves 272. The incoming water is restricted by the water guide spiral strips 274 to flow in a spiral form along the 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, thereby improving the comprehensive utilization rate of the filter element 25. The spirally flowing incoming water can flush the surface of the filter element 25, thereby cleaning the impurities filtered out of the surface of the filter element 25.

[0045] In one embodiment provided by the present invention, a top pressure water guiding component 27 is mounted on the outside of the filter element 25, and the inner ring of the top pressure water guiding component 27 is in contact with the outer wall of the filter element 25, and the outer ring is in contact 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 flows 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. 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 squeezed and bent during installation.

[0046] In another embodiment provided by the present invention, the top pressure water guide assembly 27 includes a top pressure ring 271, the top of the top pressure ring 271 is fixedly connected to a water guide spiral strip 274, the top of the top pressure ring 271 is provided with a water outlet groove 272, and the bottom is provided with a hollow water inlet hole 273, the water outlet groove 272 and the water guide spiral strip 274 are staggered, specifically, the end of the water guide spiral strip 274 away from the top pressure ring 271 is fixedly connected to the end cover 22, the number of the water outlet groove 272 and the water guide spiral strip 274 is the same, along The raw water entering the hollow water inlet hole 273 can be discharged along multiple water outlet grooves 272. Since the inner circle of the water-guiding spiral strip 274 is tangent to the filter element 25, and the outer circle 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. The incoming water is guided by the water-guiding spiral strip 274, so that the incoming water flows in a spiral form along the side of the filter element 25, flushing the surface of the filter element 25, thereby cleaning the impurities filtered out of the surface of the filter element 25.

[0047] In another embodiment provided by the present invention, after the end cover 22 is installed on the top of the filter bottle body 21, the hollow water inlet hole 273 can be connected to a group of water channel blocking components 26, so that the incoming water enters the top pressure ring 271 along the hollow water inlet hole 273 and is discharged along the water outlet trough 272. Specifically, when the end cover 22 is installed on the top of the filter bottle body 21, the top pressure ring 271 can squeeze the group of water channel blocking components 26 connected to the water inlet quick connector 23 to open them. At the same time, after the end cover 22 is installed in place, the hollow water inlet hole 273 can be precisely connected to the top outlet of the water channel blocking component 26, so that the raw water discharged from the group of water channel blocking components 26 connected to the water inlet quick connector 23 can enter the top pressure ring 271 through the hollow water inlet hole 273 and finally be discharged along the water outlet trough 272; the hollow water inlet hole 273 is set to a hollow form, which can ensure water inlet while squeezing the sealing ring rod 262.

[0048] In another embodiment provided by the present invention, the filter element 25 is clamped in the middle of the inner side of the filter bottle body 21, one group of water channel blocking components 26 is located in the middle of the bottom end of the filter element 25, and the other group of water channel blocking components 26 is located on the side of the bottom end of the filter element 25 away from the center. Specifically, one group of water channel blocking components 26 is located on the side of the bottom end of the filter element 25 away from the center and is connected to the water inlet quick connector 23 to be responsible for the raw water intake, and the other group of water channel blocking components 26 is located in the middle of the bottom end of the filter element 25 and is connected to the water outlet quick connector 24 to be responsible for the discharge of raw water after filtration. The water channel blocking component 26 located in the middle of the bottom end of the filter element 25 is also threadedly connected to a base to support the filter element 25.

[0049] In another embodiment provided by the present invention, the water channel blocking component 26 includes a connecting seat 261, and a sealing ring rod 262 and a sealing seat that cooperates with the sealing ring rod 262 are provided inside the connecting seat 261. The relative position of the sealing ring rod 262 and the sealing seat can be adjusted to control the on-off of the connecting 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 is sleeved on the lower part of the outside of the sealing ring rod 262 269, which can squeeze the lower sealing ring 263 and the upper sealing ring 264 when it is reset, thereby improving the sealing performance of the contact position between the sealing ring rod 262 and the sealing seat; when the end cover 22 is opened to replace the filter element 25, the top pressure water guide component 27 and the central push rod 28 release the squeezing of the sealing ring rod 262, and the sealing ring rod 262 can be reset to squeeze the sealing seat, thereby closing the water channel blocking component 26 and blocking the water channel, so that the filter element 25 can be quickly replaced without turning off the water source, and at the same time, it can also avoid water overflow caused by pressure in other filter bottles or pipelines.

[0050] As can be seen from the above embodiments, the lower sealing ring 263 and the upper sealing ring 264 are squeezed to perform contact sealing, thereby blocking the water path. 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.

[0051] In another embodiment provided by the present invention, the water channel blocking assembly 26 also includes a rotation driving component, and the sealing ring rod 262 is restricted from rotating by the rotation driving component when moving axially. Specifically, the rotation driving component includes a spiral portion arranged at the lower outside of the sealing ring rod 262, and an upper connecting bracket 268 fixedly installed at the lower inside of the connecting seat 261. The sealing ring rod 262 is spirally connected to the upper connecting bracket 268 through the spiral portion, and can rotate synchronously when the sealing ring rod 262 moves axially.

[0052] In another embodiment provided by the present invention, an ejector rod 266 is provided inside the sealing ring rod 262, and a plug-in cleaning component 265 is provided on the peripheral side of the sealing ring rod 262. When the sealing ring rod 262 moves downward, the ejector rod 266 can eject the plug-in cleaning component 265 along the peripheral 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 connecting bracket 267 located below the upper connecting bracket 268 is fixedly installed inside the connecting seat 261, and the ejector rod 266 is fixedly installed on the lower connecting bracket 267. The sealing ring rod 262 is movably sleeved on the ejector rod 266; the sealing ring rod 26 When the sealing ring rod 262 is squeezed 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 plug-in cleaning component 265. When the sealing ring rod 262 continues to move downward, the plug-in cleaning component 265 is squeezed out of the side of the sealing ring rod 262 by the ejector rod 266, and the plug-in cleaning component 265 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 plug-in cleaning component 265 can be driven by the sealing ring rod 262 to rotate and clean the dirt attached to the mating surfaces of the lower sealing ring 263 and the upper sealing ring 264.

[0053] In another embodiment provided by the present invention, the plug-in cleaning component 265 includes a plug-in arm 2651, which is plugged into the sealing ring rod 262. The top and bottom of the plug-in arm 2651 are both clamped with a cleaning scraper 2652, and the interior of the cleaning scraper 2652 is clamped with a pressing spring 2653. Specifically, the end of the plug-in arm 2651 close to the center of the sealing ring rod 262 and the top of the ejector rod 266 are provided with mutually matching inclined surfaces to ensure that when the sealing ring rod 262 drives the plug-in cleaning component 265 to move downward, the ejector rod 266 can press the plug-in cleaning component 265 to push the plug-in cleaning component 265 out; the maximum stroke of the downward movement of the sealing ring rod 262 is such that the highest position of the inclined surface of the plug-in arm 2651 is still at The lowest position of the top inclined surface of the ejection rod 266 is used as the basis to prevent the subsequent plug-in arm 2651 from being difficult to reset; reset springs 2654 are clamped on both sides of the plug-in arm 2651, and a clamping groove that cooperates with the plug-in arm 2651 and the reset spring 2654 is provided on the sealing ring rod 262 to ensure that the plug-in arm 2651 is stable when moving. At the same time, when the sealing ring rod 262 is reset, the reset spring 2654 applies elastic force to the plug-in arm 2651 to reset the plug-in arm 2651 as a whole; a sliding groove that cooperates with the cleaning scraper 2652 is provided on the plug-in arm 2651, and a baffle is fixedly installed on the end of the plug-in arm 2651 away from the center of the sealing ring rod 262, which can limit the position of the cleaning scraper 2652.

[0054] In 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 top cleaning scraper 2652 is pressed by the top pressure spring 2653 to resist the upper sealing ring 264, and the bottom cleaning scraper 2652 is pressed by the top pressure spring 2653 to resist the lower sealing ring 263. Specifically, after the plug-in cleaning component 265 is inserted between the lower sealing ring 263 and the upper sealing ring 264, the sealing ring rod 262 will still move downward. When the end of the plug-in arm 2651 away from the center of the sealing ring rod 262 is inserted between the lower sealing ring 263 and the upper sealing ring 264, the cleaning scraper 2652 is completely separated from the clamping groove of the sealing ring rod 262. 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, and in 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 is adaptively changed. When the sealing ring rod 262 drives the cleaning scraper 2652 to rotate, the sealing surfaces of the lower sealing ring 263 and the upper sealing ring 264 are effectively cleaned; the number of plug-in cleaning components 265 is limited by the axial stroke of the sealing ring rod 262, so that after the sealing ring rod 262 moves down into place, multiple plug-in cleaning components 265 can cooperate to achieve comprehensive cleaning of dirt on the sealing surfaces of the lower sealing ring 263 and the upper sealing ring 264.

[0055] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various 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.

Claims

1. A multi-filtration water purifier, comprising a water purifier housing (1), a PP filter mechanism (2), wherein the PP filter mechanism (2) comprises a filter bottle (21), a filter element (25) disposed inside the filter bottle (21), and an end cap (22) disposed on the top of the filter bottle (21), characterized in that: The PP filtering mechanism (2) further includes two groups of water channel blocking components (26) arranged at the bottom of the inner side of the filtering bottle body (21) for controlling the opening and closing of the inlet and outlet water channels; The bottom of the end cover (22) is fixedly connected to a top pressure water guide component (27) and a central top rod (28); After the end cap (22) is installed on the top of the filter bottle body (21), the top pressure water guide assembly (27) and the center push rod (28) can respectively press the two groups of water channel blocking assemblies (26) to open the two groups of water channel blocking assemblies (26) to connect the inlet and outlet water channels; after the end cap (22) is separated from the top of the filter bottle body (21), the two groups of water channel blocking assemblies (26) can be reset to block the inlet and outlet water channels; the top pressure water guide assembly (27) can guide the water inlet in a uniform filtering direction; The waterway blocking assembly (26) includes a connecting seat (261), a sealing ring rod (262) and a sealing seat that cooperates with the sealing ring rod (262) are provided inside the connecting seat (261), and the connection and disconnection of the connecting seat (261) can be controlled by adjusting the relative position of the sealing ring rod (262) and the sealing seat. 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. An ejector rod (266) is provided inside the sealing ring rod (262), and an insert cleaning component (265) is provided on the peripheral side of the sealing ring rod (262). When the sealing ring rod (262) moves downward, the ejector rod (266) can eject the insert cleaning component (265) along the peripheral side of the sealing ring rod (262) and insert it between the lower sealing ring (263) and the upper sealing ring (264); The waterway blocking assembly (26) further includes a rotation driving component, which includes a spiral portion provided on the outside and below of the sealing ring rod (262), and an upper connecting bracket (268) fixedly mounted on the inside and below of the connecting seat (261). The sealing ring rod (262) is spirally connected to the upper connecting bracket (268) through the spiral portion, and can rotate synchronously when the sealing ring rod (262) moves axially. A sealing pressure spring (269) is mounted below the exterior of the sealing ring rod (262). The plug-in cleaning component (265) includes a plug-in arm (2651) plugged into the sealing ring rod (262). Return springs (2654) are clamped on both sides of the plug-in arm (2651). A slot is provided on the sealing ring rod (262) to cooperate with the plug-in arm (2651) and the return spring (2654).

2. A multi-filtration water purifier according to claim 1, characterized in that: The top pressure water guide component (27) is sleeved on the outside of the filter element (25), and the inner ring of the top pressure water guide component (27) is in contact with the outer wall of the filter element (25), and the outer ring is in contact with the inner wall of the filter bottle body (21).

3. A multi-filtration water purifier according to claim 1, characterized in that: The top pressure water guide assembly (27) comprises a top pressure ring (271), the top of the top pressure ring (271) is fixedly connected to a water guide spiral strip (274), the top of the top pressure ring (271) is provided with a water outlet groove (272), and the bottom is provided with a hollow water inlet hole (273), and the water outlet groove (272) and the water guide spiral strip (274) are staggered.

4. A multi-filtration water purifier according to claim 3, characterized in that: 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 set of water channel blocking components (26), so that the incoming water enters the top pressure ring (271) along the hollow water inlet hole (273) and is discharged along the water outlet groove (272).

5. The multi-filtration water purifier according to claim 1, characterized in that: The filter element (25) is clamped to the middle of the inner side of the filter bottle (21), one group of the water channel blocking components (26) is located in the middle of the bottom end of the filter element (25), and the other group of the water channel blocking components (26) is located on the side of the bottom end of the filter element (25) away from the center.

6. A multi-filtration water purifier according to claim 5, characterized in that: The sealing ring rod (262) is capable of rotating when it moves in the axial direction and is limited by a rotating drive component.

7. A multi-filtration water purifier according to claim 6, characterized in that: The plug-in cleaning component (265) includes a plug-in arm (2651) plugged onto the sealing ring rod (262), the top and bottom of the plug-in arm (2651) are both clamped with a cleaning scraper (2652), and the interior of the cleaning scraper (2652) is clamped with a pressure spring (2653).

8. The multi-filtration water purifier according to claim 7, characterized in that: After the plug-in arm (2651) is clamped between the lower sealing ring (263) and the upper sealing ring (264), the top cleaning scraper (2652) is pressed by the top pressure spring (2653) to be against the upper sealing ring (264), and the bottom cleaning scraper (2652) is pressed by the top pressure spring (2653) to be against the lower sealing ring (263).

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