Waterway plate assembly and water purifier

Abstract

The present application relates to a waterway plate assembly and a water purifier, the waterway plate assembly comprises: a waterway plate, comprising a first filter element mounting portion, a second filter element mounting portion and an outer tube, the outer tube being connected between the first filter element mounting portion and the second filter element mounting portion; and an inner tube, the inner tube being sleeved inside the outer tube; wherein the first filter element mounting portion has a raw water channel, a primary filter outlet channel and a tertiary filter inlet channel, the second filter element mounting portion has a secondary filter inlet channel and a secondary filter outlet channel; a first channel is defined between the inner tube and the outer tube, a second channel is formed inside the inner tube; one of the first channel and the second channel is connected between the primary filter outlet channel and the secondary filter inlet channel, and the other is connected between the secondary filter outlet channel and the tertiary filter inlet channel. The above-mentioned waterway plate assembly is applied to a water purifier, can complete three filtrations, has a better purification effect, and the two pipes are sleeved together in the waterway plate assembly to reduce the overall volume.

Description

Technical Field

[0001] The present application relates to the field of water purification technology, and in particular to a waterway plate assembly and a water purifier. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for water quality. Therefore, water purifiers have been widely used. Water purifiers filter raw water through filter elements to obtain cleaner water for use.

[0003] Generally, a water purifier includes a waterway plate and a filter element. The filter element is mounted on the waterway plate. The waterway plate is used to introduce water into the filter element and to lead out water flowing out of the filter element. In order to improve the purification efficiency of the water purifier, multiple filtrations are usually required. Accordingly, the waterway plate and the waterway inside it also need to be changed to adapt to the changes in the water flow path. However, the existing waterway plate has many pipes, a large volume, and a high manufacturing cost. Summary of the invention

[0004] Based on this, it is necessary to provide a waterway plate assembly and a water purifier to address the problem of the large volume of the waterway plate.

[0005] A waterway plate assembly, the waterway plate assembly comprising:

[0006] A waterway plate, comprising a first filter element mounting portion, a second filter element mounting portion and an outer tube, wherein the outer tube is connected between the first filter element mounting portion and the second filter element mounting portion; and

[0007] An inner tube, wherein the inner tube is sleeved inside the outer tube;

[0008] Wherein, the first filter element installation part has a raw water channel, a primary filter water outlet channel and a tertiary filter water inlet channel, and the second filter element installation part has a secondary filter water inlet channel and a secondary filter water outlet channel;

[0009] A first channel is defined between the inner tube and the outer tube, and a second channel is formed in the inner tube; one of the first channel and the second channel is connected between the primary filtration water outlet channel and the secondary filtration water inlet channel, and the other of the first channel and the second channel is connected between the secondary filtration water outlet channel and the tertiary filtration water inlet channel.

[0010] The above-mentioned waterway plate assembly is applied to a water purifier. When the water purifier is used, the first filter is installed on the first filter installation part, and the second filter is installed on the second filter installation part. After the raw water enters the first filter through the raw water channel and completes the primary filtration, it flows from the primary filtration outlet channel through one of the first channel and the second channel to enter the secondary filtration inlet channel, and then flows through the second filter to complete the secondary filtration and flows from the secondary filtration outlet to the other of the first channel and the second channel, and finally flows to the tertiary filtration inlet channel and completes the tertiary filtration in the first filter, with a better purification effect. In addition, the two pipelines are sheathed together in the entire waterway plate assembly to reduce the overall volume and manufacturing cost.

[0011] In one embodiment, the first filter element mounting portion has a clean water channel, and the clean water channel is located downstream of the three-stage filter water inlet channel along the water outlet direction;

[0012] Among them, the three-stage filtration water inlet channel, the first-stage filtration water outlet channel and the raw water channel are all annularly arranged outside the clean water channel from the inside to the outside.

[0013] In one embodiment, the waterway plate also includes a raw water joint and a clean water joint both provided on the first filter element mounting portion, the raw water channel in the raw water joint is connected to the raw water channel, and the clean water channel in the clean water joint is connected to the clean water channel.

[0014] In one embodiment, the waterway plate further includes a support portion, the outer tube is connected between the water purification joint and the second filter element mounting portion, the support portion is connected to the water purification joint and is located inside the outer tube, and the inner tube sealing sleeve is disposed on the support portion;

[0015] Furthermore, a flow channel connecting the second channel and the third-stage filtering water inlet channel is formed in the supporting portion.

[0016] In one embodiment, the waterway plate assembly also includes a first seal and a second seal, both of which are sealed between the inner tube and the outer tube. The second seal is spaced apart from the first seal, and a third channel is defined therebetween to connect the secondary filtered water outlet channel and the second channel.

[0017] In one embodiment, the secondary filtration water inlet channel and the secondary filtration water outlet channel are arranged along the direction from the first filter element mounting portion to the second filter element mounting portion, and along the axial direction of the outer tube;

[0018] The first sealing component is located between the secondary filtering water inlet channel and the secondary filtering water outlet channel, and the second sealing component is located on a side of the secondary filtering water outlet channel away from the first filtering component mounting portion.

[0019] In one embodiment, the second filter element mounting portion further has a wastewater channel, and a fourth channel relatively independent of the first channel and the second channel is formed between the inner tube and the outer tube, and the fourth channel is connected to the wastewater channel.

[0020] In one of the embodiments, the waterway plate assembly further includes a wastewater joint connected to the outer tube, and a wastewater channel in the wastewater joint is in communication with the fourth channel.

[0021] In one embodiment, the waterway plate assembly further comprises a plug, the plug comprising a first plugging section and a second plugging section connected to each other, the first plugging section is sealed with the inner tube, and the second plugging section is sealed with the outer tube;

[0022] The fourth channel located between the inner tube and the outer tube is defined between the second sealing member and the second blocking section.

[0023] In one embodiment, the wastewater channel and the secondary filtration water inlet channel are both annular and are arranged outside the secondary filtration water outlet channel from the inside to the outside.

[0024] A water purifier comprises a first filter element, a second filter element and the above-mentioned waterway plate assembly, wherein the first filter element and the second filter element are respectively installed on the first filter mounting part and the second filter mounting part.

[0025] In one embodiment, the first filter element is a composite filter element having a primary filter element and a tertiary filter element, and the second filter element has a reverse osmosis membrane filter element;

[0026] The first filter element mounting portion also has a clean water channel, and the second filter element mounting portion also has a wastewater channel. The raw water channel and the first-level filter outlet channel are respectively connected to the water inlet side and the water outlet side of the first-level filter element, the second-level filter inlet channel, the second-level filter outlet channel and the wastewater channel are respectively connected to the water inlet side, the water outlet side and the wastewater side of the reverse osmosis membrane filter element, and the third-level filter inlet channel and the clean water channel are respectively connected to the water inlet side and the water outlet side of the third-level filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a water purifier in one embodiment of the present application;

[0028] Figure 2 for Figure 1 The structural schematic diagram of the waterway plate assembly in the water purifier shown;

[0029] Figure 3 for Figure 2Exploded schematic diagram of the waterway plate assembly shown.

[0030] Figure numerals: 200, water purifier; 100, waterway plate assembly; 10, waterway plate; 12, first filter element installation portion; 121, raw water channel; 123, primary filter outlet channel; 125, tertiary filter inlet channel; 127, purified water channel; 14, outer tube; 16, second filter element installation portion; 161, secondary filter inlet channel; 163, secondary filter outlet channel; 165, waste water channel; 17, raw water connector; 18 , clean water connector; 19, waste water connector; 21, first channel; 23, third channel; 25, fourth channel; 30, inner tube; 32, second channel; 40, support part; 51, first sealing member; 53, second sealing member; 70, plug; 72, first blocking section; 74, second blocking section; 210, first filter element; 211, primary filter element; 213, tertiary filter element; 230, second filter element; 231, reverse osmosis membrane filter element. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] See also Figure 1-Figure 3 In one embodiment of the present application, a water purifier 200 is provided, including a waterway plate assembly 100, a first filter element 210 and a second filter element 230. The first filter element 210 and the second filter element 230 are both assembled on the waterway plate assembly 100. The waterway plate assembly 100 guides raw water to pass through the first filter element 210 and the second filter element 230 for multiple filtrations to form purified water for use by users.

[0038] The waterway plate assembly 100 includes a waterway plate 10 and an inner tube 30. The waterway plate 10 includes a first filter element mounting portion 12, a second filter element mounting portion 16 and an outer tube 14. The first filter element mounting portion 12 is used to assemble the first filter element 210, the second filter element mounting portion 16 is used to assemble the second filter element 230, and the outer tube 14 is connected between the first filter element mounting portion and the second filter element mounting portion 16. Among them, the first filter element mounting portion 12 has a raw water channel 121, a primary filter outlet channel 123 and a tertiary filter inlet channel 125, and the second filter element mounting portion 16 has a secondary filter inlet channel 161 and a secondary filter outlet channel 163. In addition, the inner tube 30 is sleeved in the outer tube 14, and a first channel 21 is defined between the inner tube 30 and the outer tube 14. A second channel 32 is formed in the inner tube 30. One of the first channel 21 and the second channel 32 is connected between the primary filtration water outlet channel 123 and the secondary filtration water inlet channel 161, and the other of the first channel 21 and the second channel 32 is connected between the secondary filtration water outlet channel 163 and the tertiary filtration water inlet channel 125.

[0039] When the water purifier 200 is used, the first filter element 210 is installed on the first filter element installation part 12, and the second filter element 230 is installed on the second filter element installation part 16. After the raw water enters the first filter element 210 through the raw water channel 121 and completes the primary filtration, it flows from the primary filtration outlet channel 123 through one of the first channel 21 and the second channel 32 to enter the secondary filtration inlet channel 161, and then flows through the second filter element 230 to complete the secondary filtration and flows from the secondary filtration outlet to the other of the first channel 21 and the second channel 32, and finally flows to the tertiary filtration inlet channel 125 and completes the tertiary filtration in the first filter element 210, and the purification effect is better. In addition, the two pipelines (inner pipe 30 and outer pipe 14) are sleeved together in the entire waterway plate assembly 100 to reduce the overall volume and manufacturing cost.

[0040] Furthermore, the first filter element mounting portion 12 has a clean water channel 127, which is located downstream of the three-stage filtration water inlet channel 125 along the water outlet direction. The liquid flowing into the first filter element 210 from the three-stage filtration water inlet channel 125 flows out from the clean water channel 127 after three-stage filtration and is provided to users.

[0041] Specifically, the second filter element mounting portion 16 further has a wastewater channel 165 , and a fourth channel 25 relatively independent of the first channel 21 and the second channel 32 is formed between the inner tube 30 and the outer tube 14 , and the fourth channel 25 is connected to the wastewater channel 165 . Specifically in this embodiment, the second filter element 230 has a reverse osmosis membrane filter element 231, and the wastewater channel 165 is connected to the wastewater side of the reverse osmosis membrane filter element 231. A part of the liquid flowing from the secondary filtration inlet channel 161 to the water inlet side of the reverse osmosis membrane filter element 231 passes through the reverse osmosis membrane and flows from the water outlet side to the secondary filtration outlet channel 163, and the other part flows along the axial direction of the reverse osmosis membrane filter element 231 to bring out the larger impurities such as particles and colloidal particles attached to the water and the sediments covering the membrane surface or the membrane pores out of the membrane surface, thereby extending the service life of the membrane and generating wastewater flowing out of the wastewater channel 165. Finally, the wastewater is discharged from the fourth channel 25 between the inner tube 30 and the outer tube 14. In this way, there is no need to set up an additional wastewater pipeline, and the inner tube 30 and the outer tube 14 are used to discharge the wastewater, thereby simplifying the structure of the waterway plate assembly 100 and facilitating the production of the waterway plate assembly 100.

[0042] Optionally, the waterway plate assembly 100 further includes a wastewater connector 19 connected to the outer tube 14, and the wastewater channel 165 inside the wastewater connector 19 is connected to the fourth channel 25, and the wastewater flowing from the wastewater channel 165 to the fourth channel 25 between the inner tube 30 and the outer tube 14 is finally discharged through the wastewater channel 165 inside the wastewater connector 19, and the wastewater connector 19 is convenient for connecting to an external pipeline to facilitate wastewater discharge. Optionally, the wastewater connector 19 and the second filter element mounting portion 16 are arranged on both sides of the outer tube 14 in a radial direction of the outer tube 14, and the wastewater connector 19 and the wastewater channel 165 are connected by making the fourth channel 25 between the inner tube 30 and the outer tube 14 communicate.

[0043] In some embodiments, the first filter element 210 is a double filter element having a primary filter element 211 and a tertiary filter element 213, and the second filter element 230 has a reverse osmosis membrane filter element 231. The raw water channel 121 and the primary filter outlet channel 123 are respectively connected to the water inlet side and the water outlet side of the primary filter element 211, the secondary filter inlet channel 161, the secondary filter outlet channel 163 and the wastewater channel 165 are respectively connected to the water inlet side, the water outlet side and the wastewater side of the reverse osmosis membrane filter element, and the tertiary filter inlet channel 125 and the clean water channel 127 are respectively connected to the water inlet side and the water outlet side of the tertiary filter element 213.

[0044] The liquid flowing in from the raw water channel 121 can flow from the water inlet side of the primary filter element 211 to the water outlet side and finally flow out from the primary filter outlet channel 123, completing the primary filtration. Then, the liquid that has completed the primary filtration passes through the first channel 21 and flows from the secondary filter water inlet channel 161 to the water inlet side of the reverse osmosis membrane, and then passes through the reverse osmosis membrane to flow to the secondary filter outlet channel 163, completing the secondary filtration. Finally, the liquid that has completed the secondary filtration passes through the second channel 32 in the inner tube 30 and returns to the first filter element mounting portion 12, and flows to the water inlet side of the tertiary filter element 213 through the tertiary filter water inlet channel 125, and flows from the water outlet side of the tertiary filter element 213 to the clean water channel 127 after passing through the tertiary filter element 213, completing the tertiary filtration.

[0045] In some embodiments, in the first filter element mounting portion 12, the tertiary filtration water inlet channel 125, the primary filtration water outlet channel 123 and the raw water channel 121 are all arranged in an annular shape from the inside to the outside outside the clean water channel 127. When the first filter element 210 is assembled on the first filter element mounting portion 12, the water inlet side of the primary filter element 211 in the first filter element 210 is connected to the raw water channel 121, the water outlet side of the primary filter element 211 is connected to the primary filtration water outlet channel 123, the water inlet side of the tertiary filter element 213 is connected to the tertiary filtration water inlet channel 125, and the water outlet side of the tertiary filter element 213 is connected to the clean water channel 127. In this way, when the first filter element 210 is installed at the first filter element mounting portion 12, liquid can be introduced into and led out of the first filter element 210, and the waterway is only composed of several annular channels arranged mutually, and the waterway plate 10 has a simple structure and is easy to manufacture. Optionally, the clean water channel 127 located at the center is cylindrical, and the tertiary filtration water inlet channel 125, the primary filtration water outlet channel 123 and the raw water channel 121 are all annular.

[0046] Furthermore, the water circuit plate 10 also includes a raw water connector 17 and a clean water connector 18, both of which are arranged on the first filter element mounting portion 12, and the raw water channel 121 in the raw water connector 17 is connected to the raw water channel 121, and the clean water connector is connected to the clean water channel 127, so that raw water can be provided to the water circuit plate 10 after connecting the external pipeline through the raw water connector 17, and the generated clean water can be led to the outside for user use after connecting the external pipeline through the clean water connector 18.

[0047] Specifically, the waterway plate 10 further includes a support portion 40, the outer tube 14 is connected between the water purification joint 18 and the second filter element mounting portion 16, the support portion 40 is connected to the water purification joint 18 and is located inside the outer tube 14, and the inner tube 30 is sealedly sleeved on the support portion 40, so that the inner tube 30 is fixed in the outer tube 14 at intervals through the support portion 40, providing support for the inner tube 30. In addition, a flow channel connecting the second channel 32 and the tertiary filtration water inlet channel 125 is formed in the support portion 40, so that after the inner tube 30 is sleeved on the support portion 40, the second channel 32 can still be connected to the tertiary filtration water inlet channel 125 through the flow channel in the support portion 40.

[0048] See also Figure 1-Figure 3 In some embodiments, the waterway plate assembly 100 further includes a first seal 51 and a second seal 53 both of which are sealed and sleeved between the inner tube 30 and the outer tube 14 (see Figure 3 ), the second sealing member 53 and the first sealing member 51 are spaced apart from each other, and a third channel 23 is defined between the two to connect the secondary filtered water outlet channel 163 and the second channel 32. Equivalently, not only the first channel 21 is formed between the inner tube 30 and the outer tube 14, but also a third channel 23 that is independent of the first channel 21 and connected to the second channel 32 is formed to guide the liquid flowing out of the secondary filtered outlet through the third channel 23 into the second channel 32 of the inner tube 30. Specifically, a through hole connected to the third channel 23 is provided on the inner tube 30 to connect the third channel 23 with the second channel 32, allowing the liquid to enter the second channel 32 of the inner tube 30 from the third channel 23.

[0049] Furthermore, the secondary filter water inlet channel 161 and the secondary filter water outlet channel 163 are arranged along the direction from the first filter element mounting portion 12 to the second filter element mounting portion 16, and along the axial direction of the outer tube 14. The first sealing member 51 is located between the secondary filter water inlet channel 161 and the secondary filter water outlet channel 163, and the second sealing member 53 is located on the side of the secondary filter water outlet channel 163 away from the first filter element mounting portion 12, so that the secondary filter water outlet channel 163 is located between the first sealing member 51 and the second sealing member 53, so that the secondary filter water outlet channel 163 is connected to the third channel 23 between the first sealing member 51 and the second sealing member 53, and then the secondary filter water outlet channel 163 is connected to the second channel 32 in the inner tube 30 through the third channel 23.

[0050] Specifically, a plurality of mounting grooves are provided on the outer circumferential surface of the inner tube 30 , and the first seal 51 and the second seal 53 are respectively sleeved in the plurality of mounting grooves. Finally, when the inner tube 30 is sleeved into the outer tube 14 , the first seal 51 and the second seal 53 are both sealed against the inner wall of the outer tube 14 .

[0051] In some embodiments, the waterway plate assembly 100 further includes a plug 70, which includes a first plugging section 72 and a second plugging section 74 connected to each other, the first plugging section 72 and the inner tube 30 are sealed and sleeved, and the second plugging section 74 and the outer tube 14 are sealed and sleeved, so that the channel plug 70 seals the outer tube 14 and the end of the inner tube 30 away from the first filter element mounting portion 12, so that the entire waterway plate assembly 100 only needs one plug 70, with fewer water leakage points and a lower risk of water leakage. Specifically, the axial end of one end of the outer tube 14 is connected to the clean water connector 18, the outer peripheral surface of the other end of the outer tube 14 is connected to the mounting portion of the second seal 53, and the plug 70 is sleeved on the end of the outer tube 14 and the second seal 53 where it is installed.

[0052] Furthermore, a fourth channel 25 located between the inner tube 30 and the outer tube 14 is defined between the second sealing member 53 and the second blocking section 74, so as to connect the wastewater channel 165 on the second filter element mounting portion through the fourth channel 25 to lead out the wastewater in the wastewater channel 165. Specifically, a through hole connecting the fourth channel 25 with the wastewater channel 165 in the wastewater connector 19 is provided on the outer tube 14, so that the wastewater in the fourth channel 25 eventually flows into the wastewater connector 19 and is discharged from the external pipeline connected to the wastewater connector 19. In this way, in the direction in which the first filter element mounting portion 12 points to the installation of the second filter element 230, a mutually independent first channel 21, a third channel 23 and a fourth channel 25 are formed between the inner tube 30 and the outer tube 14 along the axial direction of the outer tube 14. The first channel 21 is separated from the third channel 23 by a first seal 51 , the third channel 23 is separated from the fourth channel 25 by a second seal 53 , and the axial ends of the outer tube 14 are blocked by a clean water connector 18 and a plug 70 , respectively.

[0053] In some embodiments, in the second filter element mounting portion 16, the wastewater channel 165 and the secondary filtration water inlet channel 161 are connected and are both annular and have an inner outer sleeve arranged outside the secondary filtration water outlet channel 163. When the second filter element 230 is installed on the second filter element mounting portion 16, the liquid entering the secondary filtration water inlet channel 161 enters the water inlet side of the reverse osmosis membrane filter element 231 in the second filter element 230, and then a part of the liquid passes through the reverse osmosis membrane and flows to the secondary filtration water outlet channel 163, and the other part of the liquid flushes the surface of the reverse osmosis membrane to form wastewater and flows to the wastewater channel 165. In this way, in the second filter element mounting portion 16, only the channels that are arranged mutually are needed to be formed to form multiple different water flow channels, and the overall structure is relatively simple and easy to manufacture. Optionally, the secondary filtration water outlet channel 163 located at the center is cylindrical, and the wastewater channel 165 and the secondary filtration water inlet channel 161 are both annular.

[0054] In one embodiment of the present application, a waterway plate assembly 100 is provided, which includes a waterway plate 10 and an inner tube 30. The waterway plate 10 includes a first filter element mounting portion 12, a second filter element mounting portion 16 and an outer tube 14. The first filter element mounting portion 12 is used to assemble the first filter element 210, the second filter element mounting portion 16 is used to assemble the second filter element 230, and the outer tube 14 is connected between the first filter element mounting portion and the second filter element mounting portion 16. The first filter element mounting portion 12 has a raw water channel 121, a primary filter outlet channel 123, a tertiary filter inlet channel 125 and a clean water channel 127, and the second filter element mounting portion 16 has a secondary filter inlet channel 161 and a secondary filter outlet channel 163. In addition, the inner tube 30 is sleeved in the outer tube 14, and a first channel 21 connecting the primary filter water outlet channel 123 and the secondary filter water inlet channel 161 is defined between the inner tube 30 and the outer tube 14. A second channel 32 connecting the secondary filter water outlet channel 163 and the tertiary filter water inlet channel 125 is formed in the inner tube 30.

[0055] When using the water purifier 200, the first filter element 210 is installed on the first filter element mounting portion 12, and the second filter element 230 is installed on the second filter element mounting portion 16. After the raw water enters the first filter element 210 through the raw water channel 121 and completes the primary filtration, it flows from the primary filtration outlet channel 123 through the first channel 21 between the inner tube 30 and the outer tube 14 to enter the secondary filtration inlet channel 161, and then flows through the second filter element 230 to complete the secondary filtration and flows from the secondary filtration outlet to the second channel 32 in the inner tube 30, and finally flows to the tertiary filtration inlet channel 125 and completes the tertiary filtration in the first filter element 210 and flows out from the clean water channel 127, completing three filtrations, and the purification effect is better. In addition, the two pipelines (inner tube 30 and outer tube 14) are set together in the entire waterway plate assembly 100 to reduce the overall volume and manufacturing cost.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A waterway plate assembly, characterized in that: The waterway plate assembly comprises: A waterway plate (10) comprising a first filter element mounting portion (12), a second filter element mounting portion (16), and an outer tube (14), wherein the outer tube (14) is connected between the first filter element mounting portion (12) and the second filter element mounting portion (16); and An inner tube (30), the inner tube (30) being sleeved inside the outer tube (14); The first filter element mounting portion (12) has a raw water channel (121), a primary filter water outlet channel (123) and a tertiary filter water inlet channel (125), and the second filter element mounting portion (16) has a secondary filter water inlet channel (161) and a secondary filter water outlet channel (163); A first channel (21) is defined between the inner tube (30) and the outer tube (14), and a second channel (32) is formed in the inner tube (30); one of the first channel (21) and the second channel (32) is connected between the primary filtration water outlet channel (123) and the secondary filtration water inlet channel (161), and the other of the first channel (21) and the second channel (32) is connected between the secondary filtration water outlet channel (163) and the tertiary filtration water inlet channel (125); The first filter element mounting portion (12) has a clean water channel (127), and the clean water channel (127) is located downstream of the three-stage filter water inlet channel (125) along the water outlet direction; wherein the three-stage filter water inlet channel (125), the first-stage filter water outlet channel (123) and the raw water channel (121) are all annularly arranged outside the clean water channel (127) from the inside to the outside; The waterway plate assembly further comprises a first sealing member (51) and a second sealing member (53) both of which are sealingly sleeved between the inner tube (30) and the outer tube (14); the second sealing member (53) and the first sealing member (51) are spaced apart from each other, and define a third channel (23) therebetween that communicates with the secondary filtered water outlet channel (163) and the second channel (32).

2. The waterway plate assembly according to claim 1, characterized in that: The waterway plate (10) further comprises a raw water joint (17) and a clean water joint (18) both of which are arranged on the first filter element mounting portion (12); the flow channel inside the raw water joint (17) is in communication with the raw water channel (121), and the flow channel inside the clean water joint (18) is in communication with the clean water channel (127).

3. The waterway plate assembly according to claim 2, characterized in that: The waterway plate (10) further comprises a support portion (40), the outer tube (14) being connected between the water purification joint (18) and the second filter element mounting portion (16), the support portion (40) being connected to the water purification joint (18) and being located inside the outer tube (14), and the inner tube (30) being sealingly sleeved on the support portion (40); Furthermore, a flow channel is formed in the support portion (40) and connects the second channel (32) with the third-stage filtering water inlet channel (125).

4. The waterway plate assembly according to claim 1, characterized in that: The secondary filtration water inlet channel (161) and the secondary filtration water outlet channel (163) are arranged along the direction from the first filter element mounting portion (12) to the second filter element mounting portion (16) and along the axial direction of the outer tube (14); The first sealing component (51) is located between the secondary filtering water inlet channel (161) and the secondary filtering water outlet channel (163), and the second sealing component (53) is located on a side of the secondary filtering water outlet channel (163) away from the first filtering component mounting portion (12).

5. The waterway plate assembly according to claim 1, characterized in that: The second filter element mounting portion (16) further comprises a wastewater channel (165), and a fourth channel (25) which is relatively independent of both the first channel (21) and the second channel (32) is formed between the inner tube (30) and the outer tube (14), and the fourth channel (25) is in communication with the wastewater channel (165).

6. The waterway plate assembly according to claim 5, characterized in that: The waterway plate assembly further comprises a wastewater joint (19) connected to the outer tube (14), and a flow channel in the wastewater joint (19) is in communication with the fourth channel (25).

7. The waterway plate assembly according to claim 5, characterized in that: The waterway plate assembly further comprises a plug (70), the plug (70) comprising a first plugging section (72) and a second plugging section (74) connected to each other, the first plugging section (72) being sealingly sleeved with the inner tube (30), and the second plugging section (74) being sealingly sleeved with the outer tube (14); The fourth channel (25) located between the inner tube (30) and the outer tube (14) is defined between the second sealing member (53) and the second blocking section (74).

8. The waterway plate assembly according to claim 5, characterized in that: The wastewater channel (165) and the secondary filtration water inlet channel (161) are both annular and are arranged outside the secondary filtration water outlet channel (163) from the inside to the outside.

9. A water purifier, characterized in that: The waterway plate assembly comprises a first filter element (210), a second filter element (230) and the waterway plate assembly according to any one of claims 1 to 8, wherein the first filter element (210) and the second filter element (230) are respectively mounted on the first filter element mounting portion (12) and the second filter element mounting portion (16).

10. The water purifier according to claim 9, characterized in that: The first filter element (210) is a composite filter element having a primary filter element (211) and a tertiary filter element (213), and the second filter element (230) has a reverse osmosis membrane filter element (231); The first filter element mounting portion (12) further comprises a purified water channel (127), and the second filter element mounting portion (16) further comprises a waste water channel (165). The raw water channel (121) and the primary filtration outlet water channel (123) are respectively in communication with the water inlet side and the water outlet side of the primary filter element (211). The secondary filtration water inlet channel (161), the secondary filtration outlet water channel (163) and the waste water channel (165) are respectively in communication with the water inlet side, the water outlet side and the waste water side of the reverse osmosis membrane filter element (231). The tertiary filtration water inlet channel (125) and the purified water channel (127) are respectively in communication with the water inlet side and the water outlet side of the tertiary filter element (213).

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