Pipeline framework, filter element assembly and drinking water equipment

Abstract

The utility model discloses a pipeline framework, a filter element assembly and drinking water equipment, and belongs to the technical field of water treatment equipment. The pipeline framework comprises a main body part, the main body part is provided with a first flow channel and a second flow channel, one end of the main body part is provided with a first connector communicated with the first flow channel and a second connector communicated with the second flow channel, and in the projection in the axis direction of the main body part, the peripheral face of the first connector is arranged on the inner side of the peripheral face of the second connector. According to the pipeline framework, the outer peripheral face of the first connector is arranged on the inner side of the outer peripheral face of the second connector, so that the flowing efficiency of water flow is improved, and the working efficiency of the filter element assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a pipeline skeleton, a filter element component and drinking water equipment. Background Art

[0002] Filter integration is the development trend of drinking water equipment, which can reduce the size of drinking water equipment and reduce the frequency of filter replacement for users. In the related technology, when drinking water equipment combines the pre-filter element assembly and the post-filter element assembly, multiple components are usually required to isolate the flow channel, and multiple components are connected to the housing of the filter element through joints, but the joints of multiple components cannot provide flow clearance for water flow, affecting the flow efficiency of the water flow and ultimately affecting the working efficiency of the filter element assembly. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, one purpose of the utility model is to provide a pipeline skeleton for a filter element assembly, which can improve the flow efficiency of water flow, thereby improving the working efficiency of the filter element assembly.

[0005] Another object of the present invention is to provide a filter element assembly, wherein the filter element assembly includes the aforementioned pipeline skeleton.

[0006] Another object of the present utility model is to provide a drinking water device, which includes the aforementioned filter element assembly.

[0007] According to the pipeline skeleton of the embodiment of the utility model, the pipeline skeleton includes a main body, the main body is provided with a first flow channel and a second flow channel, one end of the main body is provided with a first joint connected to the first flow channel and a second joint connected to the second flow channel, and in the projection along the axial direction of the main body, the outer peripheral surface of the first joint is arranged on the inner side of the outer peripheral surface of the second joint.

[0008] According to the pipeline skeleton of the embodiment of the utility model, the flow efficiency of the water flow is improved by arranging the outer peripheral surface of the first joint inside the outer peripheral surface of the second joint, thereby improving the working efficiency of the filter element assembly.

[0009] In addition, the pipeline skeleton according to the above embodiment of the utility model may also have the following additional technical features:

[0010] Optionally, the main body, the first joint and the second joint are integrally formed.

[0011] Optionally, in a projection along the axial direction of the main body, an outer circumferential surface of the first joint and an outer circumferential surface of the second joint have a minimum distance D, and the minimum distance D is not less than 6 mm and not more than 18 mm.

[0012] Optionally, the first joint and the second joint are arranged at intervals in a direction from one end to the other end of the main body.

[0013] Optionally, a second interface of the second flow channel is provided between the first joint and the second joint.

[0014] Optionally, in the axial direction of the main body, the second interface of the second flow channel has a size H, and the size H is not less than 2.5 mm;

[0015] Optionally, in the projection along the predetermined plane, the projection area S of the second interface of the second flow channel is not less than 15 mm 2 ; The predetermined plane is an arc surface surrounding the axis of the main body.

[0016] Optionally, the first flow channel and the second flow channel are arranged side by side, and the first joint is arranged around the first flow channel, and the second joint is arranged around the first flow channel and the second flow channel.

[0017] Optionally, the axis of the first joint coincides with the axis of the second joint.

[0018] Optionally, the first joint includes a first annular groove recessed toward the inside of the first flow channel, and the first annular groove is suitable for accommodating a sealing member.

[0019] Optionally, the second joint includes a second annular groove recessed toward the inside of the second flow channel, and the second annular groove is suitable for accommodating a sealing member.

[0020] Optionally, the first annular groove comprises a plurality of first annular grooves, and the plurality of first annular grooves are arranged along the axial direction of the main body.

[0021] Optionally, the second annular groove comprises a plurality of second annular grooves, and the plurality of second annular grooves are arranged along the axial direction of the main body.

[0022] According to the filter element assembly of the embodiment of the utility model, the filter element assembly includes a shell, an inlet and outlet water joint, the above-mentioned pipe skeleton and a first filter material, the shell has a first filter chamber, the inlet and outlet water joints are arranged in the shell, the pipe skeleton is arranged in the first filter chamber and is connected to the inlet and outlet water joints, and the first flow channel and the second flow channel are respectively connected to the first filter chamber, and the first filter material is arranged in the first filter chamber for filtering the water flowing through the first filter chamber.

[0023] According to the filter element assembly of the embodiment of the utility model, the working efficiency of the filter element assembly can be improved by applying the aforementioned pipeline skeleton.

[0024] According to the drinking water equipment of the embodiment of the utility model, the drinking water equipment includes the aforementioned filter element assembly.

[0025] According to the drinking water equipment of the embodiment of the utility model, the working efficiency of the drinking water equipment can be improved by applying the aforementioned filter element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the pipeline skeleton in some embodiments of the utility model.

[0027] Figure 2 It is a cross-sectional view of the pipeline skeleton in some embodiments of the utility model.

[0028] Figure 3 yes Figure 2 Partial cross-sectional view of an embodiment.

[0029] Figure 4 It is a schematic diagram of the filter element assembly in some embodiments of the utility model.

[0030] Figure 5 yes Figure 4 A partial schematic diagram of an embodiment.

[0031] Reference numerals:

[0032] Filter element assembly 100, pipeline skeleton 10, main body 11, first flow channel 111, second flow channel 112, first joint 12, first interface 121, first annular groove 122, second joint 13, second interface 131, second annular groove 132, shell 20, first filter chamber 21, first sub-chamber 211, second sub-chamber 212, second filter chamber 22, third sub-chamber 221, fourth sub-chamber 222, inlet and outlet water joints 30, first filter material 40, second filter material 50, seal 60, axial direction AA. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The present invention proposes a pipeline skeleton 10, a filter element assembly 100 and a drinking water device for a filter element assembly 100, wherein the pipeline skeleton 10 can be arranged in the filter element assembly 100 to distribute the water flow in the filter element assembly 100 so that the water flow can be filtered through the first filter material 40; and the pipeline skeleton 10 in the embodiment of the present invention can improve the flow efficiency of the water flow by arranging the first joint 12 and the second joint 13 in the axial direction, thereby improving the working efficiency of the filter element assembly 100.

[0035] in, Figure 2 , Figure 4 and Figure 5 The dotted arrows in the figure show the flow direction of water in the pipeline skeleton 10 and the filter element assembly 100, but the flow direction of the water only represents some embodiments of the utility model and cannot represent the entirety of the utility model.

[0036] Reference Figures 1 to 5 According to the pipeline skeleton 10 of the embodiment of the utility model, the pipeline skeleton 10 includes a main body 11, the main body 11 is provided with a first flow channel 111 and a second flow channel 112, one end of the main body 11 is provided with a first joint 12 connected to the first flow channel 111 and a second joint 13 connected to the second flow channel 112, in the projection along the axial direction of the main body 11, the outer peripheral surface of the first joint 12 is arranged on the inner side of the outer peripheral surface of the second joint 13; such a configuration can improve the flow efficiency of the water flow, thereby improving the working efficiency of the filter element assembly 100.

[0037] Specifically, the filter element assembly 100 includes an inlet and outlet water joint 30, the inlet and outlet water joint 30 includes a first cylinder and a second cylinder, the first cylinder is arranged on the radial inner side of the second cylinder, the first cylinder has a first opening, and the second cylinder has a second opening between the first cylinder and the first cylinder, the first joint 12 has a first interface 121, the first interface 121 is connected to the first flow channel 111, the second joint 13 has a second interface 131, the second interface 131 is connected to the second flow channel 112, and the pipeline skeleton 10 can be connected to the inlet and outlet water joint 30 is connected, thereby connecting the first flow channel 111 with the first opening, and connecting the second flow channel with the second opening. In this way, the water flow can flow through the second opening and the second interface 131 in sequence and then flow into the pipeline skeleton 10. After flowing out of the pipeline skeleton 10, it flows out of the filter element assembly 100 through the first interface 121 and the first opening, and the water flow in the filter element assembly 100 is distributed through the pipeline skeleton 10. Of course, the water flow can also flow into the pipeline skeleton 10 from the first opening and flow out of the pipeline skeleton 10 from the second opening, and the utility model does not limit this.

[0038] More specifically, in the projection along the axial direction of the main body 11, the outer peripheral surface of the first joint 12 is arranged on the inner side of the outer peripheral surface of the second joint 13, so that there is a predetermined distance between the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13, and the predetermined distance can provide a flow gap for the water flow in the filter element assembly 100, facilitate the passage of water, and improve the flow efficiency of the water flow; it can be understood that the first joint 12 is connected to the first cylinder, and the second joint 13 is connected to the second cylinder, and there is a predetermined distance between the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13, and the predetermined distance can be the width dimension of the flow channel between the second opening and the second interface 131 (the width dimension here refers to the vertical dimension in the extension direction of the flow channel), which facilitates the passage of water and reduces the flow resistance of the water flow.

[0039] Therefore, according to the pipeline skeleton 10 of the embodiment of the utility model, the flow efficiency of the water flow is improved by setting the outer peripheral surface of the first joint 12 inside the outer peripheral surface of the second joint 13, thereby improving the working efficiency of the filter element assembly 100.

[0040] Reference Figures 1 to 5 In some embodiments of the utility model, the main body 11, the first joint 12 and the second joint 13 are integrally formed, so that the structural strength of the pipeline skeleton 10 can be improved; it can be understood that in the filter element assembly 100, the pipeline skeleton 10 is connected to the inlet and outlet water joints 30, and is suitable for allowing water to flow through the first flow channel 111 and the second flow channel 112 in the pipeline skeleton 10, thereby realizing the water flow coordination of the pipeline skeleton 10, causing the pipeline skeleton 10 to be under greater pressure. Therefore, the main body 11, the first joint 12 and the second joint 13 can be integrated, which can facilitate the assembly of the pipeline skeleton 10 in the filter element assembly 100, and improve the structural strength of the pipeline skeleton 10, thereby improving the working stability of the filter element assembly 100.

[0041] Reference Figure 3 In some embodiments of the utility model, in the projection along the axial direction of the main body 11, the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13 have a minimum spacing D, and the minimum spacing D is not less than 6 mm and not more than 18 mm; such a setting can improve the flow efficiency of the water flow in the filter element assembly 100, thereby improving the working efficiency of the filter element assembly 100.

[0042] In detail, according to the above, the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13 can define the width dimension of the flow channel between the second opening and the second interface 131, and the width dimension can be the minimum distance D between the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13; thus, in order to reduce the flow resistance of the water flow and improve the flow efficiency of the water flow, the minimum distance D can be no less than 6 mm.

[0043] In addition, the filter element assembly 100 also includes a first filter material 40, which is arranged around the axis of the main body 11 of the pipeline skeleton 10 and is located on the outside of the pipeline skeleton 10. If the minimum spacing D is greater than 18 mm, the pipeline skeleton 10 will occupy the space inside the filter element assembly 100, resulting in a reduction in the arrangement space of the first filter material 40, affecting the filtering performance of the filter element assembly 100. Therefore, the minimum spacing D can be no less than 18 mm.

[0044] Among them, the minimum spacing D can be 6mm, 8mm, 10mm, 12mm, 16mm, and 18mm.

[0045] Reference Figures 1 to 5 In some embodiments of the present invention, the first joint 12 and the second joint 13 are arranged at intervals in the direction from one end to the other end of the main body 11; such an arrangement can facilitate the integral molding of the pipeline skeleton 10 and improve the efficiency of processing and manufacturing.

[0046] Specifically, the pipeline skeleton 10 can be integrally formed through an injection molding process; during this process, the first mold and the second mold are closed along the radial direction of the main body 11, and the pipeline skeleton 10 is formed by injecting molding into the cavity between the first mold and the second mold; if the first joint 12 and the second joint 13 are not arranged at intervals in the axial direction, since the outer peripheral surface of the first joint 12 is arranged on the inner side of the second joint 13, the first joint 12 cannot be formed during injection molding. Therefore, the first joint 12 and the second joint 13 can be arranged along the axial direction of the main body 11 to facilitate the formation of the first joint 12 and the second joint 13.

[0047] In addition, in order to consider the sealing performance of the first flow channel 111 and the second flow channel 112 in the pipeline skeleton 10, it is necessary to arrange the first joint 12 and the second joint 13 at intervals in the direction from one end to the other end of the main body 11, with one end of the main body 11 close to the inlet and outlet water joints 30, and the other end away from the inlet and outlet water joints 30. In this way, the first joint 12 with a smaller radial dimension can be sealed connected to the inlet and outlet water joints 30, and then the second joint 13 with a larger radial dimension can be sealed connected to the inlet and outlet water joints 30, thereby improving the sealing performance of the pipeline skeleton 10.

[0048] Reference Figures 1 to 5 In some embodiments of the utility model, a second interface 131 of the second flow channel 112 is provided between the first joint 12 and the second joint 13; specifically, in combination with the foregoing, the first joint 12 and the second joint 13 are arranged at a spacing in the axial direction of the main body 11. In other words, there is a predetermined spacing between the first joint 12 and the second joint 13, and the predetermined spacing can provide a flow gap for the water flow, and the second interface 131 of the second flow channel 112 is opened between the first joint 12 and the second joint 13. The predetermined spacing can facilitate the water flow to enter the second interface 131, thereby improving the flow efficiency of the water flow.

[0049] Reference Figure 3 In some embodiments of the utility model, along the axial direction of the main body 11, the second interface 131 of the second flow channel 112 has a size H, and the size H is not less than 2.5 mm; such a setting can improve the flow efficiency of the water flow in the filter element assembly 100, thereby improving the working efficiency of the filter element assembly 100.

[0050] In detail, in the filter element assembly 100, water needs to enter the second flow channel 112 or be discharged from the second flow channel 112 through the second interface 131. In order to reduce the flow resistance of the water flow and improve the flow efficiency of the water flow, the size H of the second interface 131 can be not less than 2.5 mm, so that the water flow can pass through the second interface 131. The size H can be 2.5 mm, 3.0 mm, 4.5 mm, or 8 mm.

[0051] In some embodiments of the present invention, in the projection along the predetermined plane, the projection area S of the second interface 131 of the second flow channel 112 is not less than 15 mm 2 ; The predetermined plane is an arc surface around the axis of the main body 11; such a setting can improve the flow efficiency of the water flow in the filter element assembly 100, thereby improving the working efficiency of the filter element assembly 100.

[0052] In detail, in the filter element assembly 100, the water needs to enter the second flow channel 112 or be discharged from the second flow channel 112 through the second interface 131. In order to reduce the flow resistance of the water flow and improve the flow efficiency of the water flow, the projection area S of the second interface 131 can be not less than 15mm 2 , which facilitates water flow through the second interface 131. The projected area S can be 15mm 2 , 20mm 2 , 25mm 2 , 30mm 2 .

[0053] Reference Figures 1 to 5 In some embodiments of the utility model, the first flow channel 111 and the second flow channel 112 are arranged side by side, and the second joint 13 is arranged around the first flow channel 111 and the second flow channel 112, and the first joint 12 is arranged around the first flow channel 111; such an arrangement can facilitate the one-piece molding of the pipeline skeleton 10, thereby improving the structural strength of the pipeline skeleton 10.

[0054] Specifically, the pipeline skeleton 10 can be integrally formed through an injection molding process; during this process, the first mold and the second mold are closed along the radial direction of the main body 11, and two insert pins for flow channel molding are set in the cavity between the first mold and the second mold. The two insert pins are arranged side by side, and injection molding is performed into the cavity between the first mold and the second mold to form the pipeline skeleton 10 and the first flow channel 111 and the second flow channel 112 in the pipeline skeleton 10; in other words, the first flow channel 111 and the second flow channel 112 arranged side by side can be formed through an injection molding process, which is convenient for the processing and manufacturing of the pipeline skeleton 10, and improves the structural strength of the pipeline skeleton 10, thereby improving the working stability of the filter element assembly 100.

[0055] In addition, the first flow channel 111 has one end close to the inlet and outlet water joint 30, and the other end away from the inlet and outlet water joint 30, and the second flow channel 112 has one end close to the inlet and outlet water joint 30, and the other end away from the inlet and outlet water joint 30; in some specific examples, one end of the first flow channel 111 extends out of one end of the second flow channel 112, and a first joint 12 is arranged around one end of the first flow channel 111, and a second joint 13 is arranged around the outermost side formed by the first flow channel 111 and the second flow channel 112 being arranged side by side, so that the first joint 12 and the second joint 13 are both located on the outside of the pipeline skeleton 10, which is convenient for forming the first joint 12 and the second joint 13 through an injection molding process; and when connected, the first joint 12 can be sealed and connected to the inner side of the first cylinder, and the second joint 13 can be sealed and connected to the inner side of the second cylinder, so that the first flow channel 111 is connected to the first opening, and the second flow channel 112 is connected to the second opening, so as to realize quick disassembly and assembly.

[0056] Reference Figures 1 to 5 In some embodiments of the present invention, the axis of the first joint 12 coincides with the axis of the second joint 13 , which can form a fool-proof design and facilitate the assembly of the pipeline skeleton 10 in the filter element assembly 100 .

[0057] Specifically, according to the above, the first joint 12 is arranged around the first flow channel 111, and the second joint 13 is arranged around the outermost side formed by the first flow channel 111 and the second flow channel 112, and the first joint 12 can be connected to the first cylinder body, and the second joint 13 can be connected to the second cylinder body. In order to facilitate the connection of the pipeline skeleton 10 to the inlet and outlet water joints 30, the axes of the first cylinder body and the second cylinder body can be arranged to coincide with each other, and the axes of the first joint 12 and the second joint 13 can be arranged to coincide with each other. In this way, the first joint 12 and the second joint 13 can be respectively connected to the first cylinder body and the second cylinder body when they are rotated at any angle along the circumference of the main body 11, thereby improving the assembly efficiency of the filter element assembly 100.

[0058] Reference Figures 1 to 5In some embodiments of the utility model, the first joint 12 includes a first annular groove 122 recessed toward the interior of the first flow channel 111, and the first annular groove 122 is suitable for placing the seal 60; specifically, the first joint 12 can be arranged on the inner side of the first annular groove 122, and the outer peripheral wall of the first joint 12 has a first annular groove 122 recessed toward the interior of the first flow channel 111, and the seal 60 can be arranged in the first annular groove 122, and the sealing member 60 is abutted against the inner side of the first cylinder to achieve the sealing of the first flow channel 111.

[0059] Reference Figures 1 to 5 In some embodiments of the present invention, the second joint 13 includes a second annular groove 132 recessed toward the interior of the second flow channel 112, and the second annular groove 132 is suitable for placing a seal 60; specifically, the second joint 13 can be arranged on the inner side of the second annular groove 132, and the outer peripheral wall of the second joint 13 has a second annular groove 132 recessed toward the interior of the second flow channel 112, and a seal 60 can be arranged in the second annular groove 132, and the second flow channel 112 is sealed by the abutment cooperation between the seal 60 and the inner side of the second cylinder; and in combination with the aforementioned embodiment, the second interface 131 of the second joint 13 is opened between the first joint 12 and the second joint 13, therefore, the seal 60 in the first annular groove 122 and the seal 60 in the second annular groove 132 can cooperate to seal the flow channel between the second joint 13 and the second opening, thereby improving the sealing performance of the filter element assembly 100.

[0060] Reference Figures 1 to 5 In some embodiments of the utility model, the first annular groove 122 includes a plurality of first annular grooves 122, and the plurality of first annular grooves 122 are arranged along the axial direction of the main body 11; sealing members 60 may be respectively provided in the plurality of first annular grooves 122, and the first joint 12 may be connected to the first cylinder body through the plurality of sealing members 60 to achieve a quick plug-in effect; and the plurality of sealing members 60 may improve the sealing performance between the first joint 12 and the first cylinder body, thereby preventing unfiltered water from leaking to other positions of the filter element assembly 100, or preventing filtered water from leaking, thereby affecting the working efficiency of the filter element assembly 100.

[0061] Reference Figures 1 to 5 In some embodiments of the utility model, the second annular groove 132 includes a plurality of second annular grooves 132 arranged along the axial direction of the main body 11; a sealing member 60 may be respectively provided in the plurality of second annular grooves 132, and the second joint 13 and the second cylinder body may be connected by the plurality of sealing members 60 to achieve a quick plug-in effect; and the plurality of sealing members 60 may improve the sealing performance between the second joint 13 and the second cylinder body to prevent water leakage from affecting the normal operation of the filter element assembly 100.

[0062] Reference Figures 1 to 5According to the filter element assembly 100 of the embodiment of the utility model, the filter element assembly 100 includes a shell 20, an inlet and outlet water joint 30, the above-mentioned pipeline skeleton 10 and a first filter material 40. The shell 20 has a first filter chamber 21, the inlet and outlet water joint 30 is arranged in the shell 20, the pipeline skeleton 10 is arranged in the first filter chamber 21 and is connected to the inlet and outlet water joint 30, and the first flow channel 111 and the second flow channel 112 are respectively connected to the first filter chamber 21. The first filter material 40 is arranged in the first filter chamber 21 for filtering the water flowing through the first filter chamber 21. By applying the aforementioned pipeline skeleton 10, the working efficiency of the filter element assembly 100 can be improved.

[0063] Specifically, a pipe skeleton 10 is provided in the first filter cavity 21 of the housing 20, and the housing 20 is provided with an inlet and outlet water joint 30, and the inlet and outlet water joint 30 is used to connect the external pipe of the filter element assembly 100, so as to facilitate the water flow to enter or discharge the filter element assembly 100, and the pipe skeleton 10 can be connected with the inlet and outlet water joint 30; wherein, the inlet and outlet water joint 30 includes a first cylinder and a second cylinder, the first cylinder has a first opening, and a second opening is provided between the second cylinder and the first cylinder, the first joint 12 has a first interface 121, and the second joint 13 has a second interface 131, the first joint 12 can be arranged on the radial inner side of the first cylinder, and the second joint 13 can be arranged on the radial inner side of the first cylinder, and the second joint 13 can be arranged on the radial inner side of the first cylinder. A first annular groove 122 is provided on the radial outer side of a joint 12, and the first annular groove 122 can be used to set a seal 60. The seal 60 can realize the quick connection between the first joint 12 and the first cylinder, and seal the gap between the first joint 12 and the first cylinder to improve the sealing performance; similarly, a second joint 13 can be provided on the radial inner side of the second cylinder, and a second annular groove 132 is provided on the radial outer side of the second joint 13. The second annular groove 132 can be used to set a seal 60. The seal 60 can realize the quick connection between the second joint 13 and the second cylinder, and seal the gap between the second joint 13 and the second cylinder.

[0064] In addition, a first filter material 40 is also provided in the first filter cavity 21 of the shell 20. The first filter material 40 is arranged around the pipeline skeleton 10, and a first sub-cavity 211 is formed between the first filter material 40 and the shell 20, and a second sub-cavity 212 is formed between the first filter material 40 and the pipeline skeleton 10. The first sub-cavity 211 can be communicated with the first flow channel 111 of the pipeline skeleton 10, and the second sub-cavity 212 can be communicated with the second flow channel 112 of the pipeline skeleton 10; when the filter element assembly 100 is working, the water flow can enter the filter element assembly 100 through the second opening of the inlet and outlet water joint 30, and enter the second flow channel 112 through the second interface 131 of the second joint 13, and the water flow is distributed to the second sub-cavity 212 through the pipeline skeleton 10, and then the water flow can enter the first sub-cavity from the second sub-cavity 212 through the first filter material 40 to achieve water flow filtration, and then the water flow passes through the first flow channel 111, the first interface 121 and the first opening in sequence and then discharges the filter element assembly 100. Of course, the water flow direction may also be opposite to the above, that is, the water flows into the filter element assembly 100 through the first opening and is discharged from the filter element assembly 100 through the second opening. The present invention does not limit this.

[0065] More specifically, in the projection along the axial direction of the main body 11, the outer peripheral surface of the first joint 12 is arranged on the inner side of the outer peripheral surface of the second joint 13, so that there is a predetermined spacing between the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13, and the predetermined spacing can provide a flow gap for the water flow in the filter element assembly 100, facilitate the water flow to pass through, and improve the flow efficiency of the water flow. Among them, there is a minimum spacing D between the outer peripheral surface of the first joint 12 and the outer peripheral surface of the second joint 13, and the minimum spacing D is not less than 6mm and not more than 18mm, so as to reduce the flow resistance of the water flow, avoid water flow impact, improve the flow efficiency of the water flow, and avoid the pipeline skeleton 10 from occupying too much internal space of the filter element assembly 100, affecting the internal structural layout of the filter element assembly 100.

[0066] In addition, the first joint 12 and the second joint 13 are arranged at intervals in the direction from one end to the other end of the main body 11, which can facilitate the integral molding of the pipeline skeleton 10 through the injection molding process, thereby improving the efficiency of processing and manufacturing. The second interface 131 of the second flow channel 112 is opened between the first joint 12 and the second joint 13, and the axial spacing between the first joint 12 and the second joint 13 can provide a flow gap for the second interface 131 to improve the flow efficiency of water through the second interface 131. The second interface 131 of the second flow channel 112 has a size H, and the size H is not less than 2.5mm, so as to improve the flow efficiency of the water flow; or, the projection area S of the second interface 131 of the second flow channel 112 on the predetermined plane is not less than 15mm 2 , in order to improve the flow efficiency of water flow.

[0067] Furthermore, the first joint 12, the second joint 13 and the main body 11 are integrally formed, thereby improving the structural strength of the pipeline skeleton 10 and improving the working stability of the filter element assembly 100; in addition, the first flow channel 111 and the second flow channel 112 of the pipeline skeleton 10 are arranged side by side, which can facilitate the integral molding of the pipeline skeleton 10 through the injection molding process and improve the processing efficiency. In addition, the axes of the first joint 12 and the second joint 13 coincide, which can form a fool-proof design and facilitate the assembly hole between the pipeline skeleton 10 and the inlet and outlet water joints 30.

[0068] Furthermore, the first annular groove 122 includes a plurality of seals 60 arranged axially along the main body 11, and the second annular groove 132 includes a plurality of seals 60 arranged axially along the main body 11, so as to facilitate setting a plurality of seals 60 on the first joint 12 and the second joint 13, thereby further improving the sealing performance between the first joint 12 and the first cylinder, and the sealing performance between the second joint 13 and the second cylinder.

[0069] In addition, in some specific examples, the filter element assembly 100 also includes a second filter material 50, the housing 20 also has a second filter cavity 22, the second filter material 50 and the pipeline skeleton 10 are arranged in the second filter cavity 22, and are arranged around the outside of the pipeline skeleton 10, there is a third sub-cavity 221 between the second filter material 50 and the pipeline skeleton 10, there is a fourth sub-cavity 222 between the second filter material 50 and the housing 20, the inlet and outlet water joint 30 has a third opening and a fourth opening, the third opening is connected to the third sub-cavity 221, and the fourth opening is connected to the fourth sub-cavity 222, the water flow can enter the filter element assembly 100 from the fourth opening, and flow through the fourth sub-cavity 222, and then enter the third sub-cavity 221 from the fourth sub-cavity 222 through the second filter material 50, and finally discharged from the third opening, so as to realize the secondary filtration of the water flow. Of course, the water flow direction can also be opposite to the above, that is, the water flow enters the filter element assembly 100 through the third opening and is discharged from the filter element assembly 100 through the fourth opening, and the utility model does not limit this.

[0070] According to the drinking water equipment of the embodiment of the utility model, the drinking water equipment includes the filter element assembly 100 of the above embodiment, and the working efficiency of the drinking water equipment can be improved by setting the pipeline skeleton 10 in the filter element assembly 100. It should be understood that the drinking water equipment can be a water purifier, a water purifier, or a water-using equipment with a heating function or a cooling function.

[0071] In the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, 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 the present invention can be understood according to specific circumstances.

[0073] In the present utility model, 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" or "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" or "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.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pipeline skeleton for a filter element assembly, characterized in that: The invention comprises a main body (11), wherein the main body (11) is provided with a first flow channel (111) and a second flow channel (112); one end of the main body (11) is provided with a first joint (12) connected to the first flow channel (111) and a second joint (13) connected to the second flow channel (112); in a projection along the axial direction of the main body (11), the outer peripheral surface of the first joint (12) is arranged on the inner side of the outer peripheral surface of the second joint (13).

2. The pipeline skeleton according to claim 1, characterized in that: The main body (11), the first joint (12) and the second joint (13) are integrally formed.

3. The pipeline skeleton according to claim 1, characterized in that: In the projection along the axial direction of the main body (11), the outer peripheral surface of the first joint (12) and the outer peripheral surface of the second joint (13) have a minimum distance D, and the minimum distance D is not less than 6 mm and not more than 18 mm.

4. The pipeline skeleton according to claim 1, characterized in that: The first joint (12) and the second joint (13) are arranged at intervals in a direction from one end to the other end of the main body (11).

5. The pipeline skeleton according to claim 4, characterized in that: A second interface (131) of the second flow channel (112) is provided between the first joint (12) and the second joint (13).

6. The pipeline skeleton according to claim 5, characterized in that: In the axial direction of the main body (11), the second interface (131) of the second flow channel (112) has a size H, and the size H is not less than 2.5 mm; and / or, in a projection along a predetermined plane, a projection area S of the second interface (131) of the second flow channel (112) is not less than 15 mm 2 ; The predetermined plane is an arc surface surrounding the axis of the main body (11).

7. The pipeline skeleton according to claim 1, characterized in that: The first flow channel (111) and the second flow channel (112) are arranged side by side, and the first joint (12) is arranged around the first flow channel (111), and the second joint (13) is arranged around the first flow channel (111) and the second flow channel (112).

8. The pipeline skeleton according to claim 1, characterized in that: The axis of the first joint (12) coincides with the axis of the second joint (13).

9. The pipeline skeleton according to any one of claims 1 to 8, wherein the first joint (12) comprises a first annular groove (122) recessed toward the inside of the first flow channel (111), and the first annular groove (122) is suitable for accommodating a sealing member (60).

10. The pipeline skeleton according to claim 9, characterized in that: The second joint (13) comprises a second annular groove (132) recessed toward the inside of the second flow channel (112), and the second annular groove (132) is suitable for accommodating a sealing member (60).

11. The pipeline skeleton according to claim 10, characterized in that: The first annular groove (122) includes a plurality of first annular grooves (122), and the plurality of first annular grooves (122) are arranged along the axial direction of the main body (11); Alternatively, the second annular groove (132) includes a plurality of second annular grooves (132), and the plurality of second annular grooves (132) are arranged along the axial direction of the main body (11).

12. A filter element assembly, characterized in that: include: A housing (20), wherein the housing (20) has a first filter cavity (21); an inlet and outlet water joint (30), wherein the inlet and outlet water joint (30) is arranged on the housing (20); The pipeline skeleton according to any one of claims 1 to 11, wherein the pipeline skeleton is arranged in the first filter cavity (21) and connected to the inlet and outlet water joints (30), and the first flow channel (111) and the second flow channel (112) are respectively connected to the first filter cavity (21); A first filter material (40), the first filter material (40) is arranged in the first filter cavity (21) and is used to filter water flowing through the first filter cavity (21).

13. A drinking water device, characterized in that: Includes the filter element assembly described in claim 12.

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