Framework assembly of filter element, filter element and water purification equipment

Abstract

The utility model relates to the technical field of water treatment, and particularly discloses a framework assembly of a filter element, the filter element and water purification equipment, the framework assembly of the filter element comprises a framework and an end cover, the framework is provided with a first end part, a second end part and a first channel arranged between the first end part and the second end part; the end cover is connected to the first end of the framework and comprises an insertion pipe, and at least one part of the insertion pipe is inserted into the first end of the framework and communicated with the first channel. According to the framework assembly disclosed by the embodiment of the utility model, the insertion pipe is arranged on the end cover and is communicated with the first channel, so that the pipeline of the filter element is optimized, and the mounting efficiency of the filter element is improved.

Description

Technical Field

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

[0002] As the key core component of water purification equipment, the filter element removes impurities and pollutants in the water through a multi-stage filtration system. The integration of filter elements is the development trend of water purification equipment, and the design needs to make full use of the space of the filter element. Utility Model Content

[0003] One purpose of the utility model is to provide a filter element skeleton assembly to optimize the pipeline of the filter element.

[0004] Another object of the present invention is to provide a filter element, comprising the aforementioned skeleton assembly.

[0005] Another object of the present invention is to provide a water purification device, comprising the aforementioned skeleton assembly, or comprising the aforementioned filter element.

[0006] According to the filter element of the embodiment of the utility model, the skeleton assembly includes: a skeleton and an end cover, wherein the skeleton has a first end, a second end and a first channel arranged between the first end and the second end; the end cover is connected to the first end of the skeleton, and the end cover includes a cannula, at least a part of which is inserted into the first end of the skeleton and connected to the first channel.

[0007] According to the skeleton assembly of the filter element of the embodiment of the utility model, by arranging a cannula on the end cover, and the cannula is connected to the first channel, the water in the first channel can be guided through the end cover, thereby optimizing the pipeline of the filter element.

[0008] In addition, the skeleton assembly of the filter element according to the above embodiment of the utility model may also have the following additional technical features:

[0009] In some embodiments, the first end portion includes a first section and a second section arranged along the axial direction, one end of the first section constructs a first interface and the other end is connected to the second section, the inner circumference of the first section is arranged around the outside of the inner circumference of the second section in the axial projection, and the cannula is passed through the first section and the second section.

[0010] In some embodiments, the inner diameter of the first section is greater than the inner diameter of the second section; or, the first section gradually expands outward in a direction away from the second section.

[0011] In some embodiments, a connecting surface is provided between the inner circumference of the first section and the inner circumference of the second section, and the connecting surface connects the inner circumference of the first section and the inner circumference of the second section, wherein the inner circumference of the first section, the inner circumference of the second section and the connecting surface construct a step structure; or, the connecting surface is set to gradually expand outward from the second section to the first section; or, the connecting surface is set to be an arc surface or a conical surface along the axial direction of the skeleton.

[0012] In some embodiments, the inner diameter of the first section is d1, and the inner diameter of the second section is d2, wherein d1-d2≥0.6 mm.

[0013] In some embodiments, the inner diameter of the first section is d1, and the outer diameter of the cannula is d3, wherein d1-d3≥1 mm.

[0014] In some embodiments, the cannula is provided with a first sealing structure, and the first sealing structure cooperates with the first section to seal; and / or, the cannula is provided with a second sealing structure, and the second sealing structure cooperates with the second section to seal.

[0015] In some embodiments, a positioning groove is provided on the outer circumference of the cannula, and the skeleton assembly further includes a sealing ring provided in the positioning groove, and the sealing ring abuts against the inner circumference of the skeleton.

[0016] In some embodiments, the skeleton is integrally formed.

[0017] According to the filter element of the embodiment of the utility model, it includes: the aforementioned skeleton assembly, a first filter material and a barrel, wherein the first filter material is arranged around the periphery of the skeleton, and a first cavity is constructed between the first filter material and the skeleton; the barrel has a accommodating cavity for accommodating the first filter material, and a second cavity is constructed between the barrel and the first filter material; wherein the insert tube is connected to the second cavity.

[0018] In some embodiments, the skeleton further has a second channel, one end of which is connected to the first cavity.

[0019] In some embodiments, the filter element further includes: a second filter material and a shell, the second filter material is arranged around the periphery of the skeleton, a third cavity is constructed between the second filter material and the skeleton; a fourth cavity is constructed between the shell and the second filter material.

[0020] In some embodiments, the frame is provided with a flange, and the accommodating cavity is constructed between the cylinder and the flange.

[0021] In some embodiments, the flange is integrally formed with the frame.

[0022] The water purification device according to the embodiment of the utility model includes the skeleton assembly of the aforementioned filter element, or includes the aforementioned filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the skeleton assembly of an embodiment of the utility model.

[0024] Figure 2 It is an exploded schematic diagram of the skeleton assembly of the embodiment of the utility model.

[0025] Figure 3 It is a cross-sectional schematic diagram of the skeleton assembly of the embodiment of the utility model.

[0026] Figure 4 yes Figure 3 An enlarged schematic diagram of circle A in FIG.

[0027] Figure 5 It is a cross-sectional view of the skeleton assembly of an embodiment of the utility model, wherein the skeleton and the end cover are in an unassembled state.

[0028] Figure 6 yes Figure 5 An enlarged schematic diagram of circle B.

[0029] Figure 7 A cross-sectional view of a skeleton assembly according to another embodiment of the present invention.

[0030] Figure 8 yes Figure 7 Enlarged schematic diagram of the center circle C.

[0031] Fig. 9 It is a cross-sectional view of a skeleton assembly of another embodiment of the utility model, wherein the skeleton and the end cover are in an unassembled state.

[0032] Fig.10 yes Fig. 9 Enlarged schematic diagram of the center circle D.

[0033] Fig.11 It is an exploded schematic diagram of the end cover and the sealing ring of the skeleton assembly of the embodiment of the utility model.

[0034] Fig.12 It is a cross-sectional schematic diagram of a filter element according to an embodiment of the utility model.

[0035] Fig.13 It is a cross-sectional schematic diagram of the filter element of the embodiment of the utility model, which shows the flow direction of water.

[0036] Fig.14 It is a cross-sectional schematic diagram of a filter element according to an embodiment of the utility model, which shows the flow direction of water in another embodiment.

[0037] Reference numerals:

[0038] Filter element 1000, skeleton assembly 100, skeleton 10, first end 11, first section 111, second section 112, connecting surface 113, second end 12, first channel 131, second channel 132, inlet 1321, first interface 14, positioning groove 15, end cover 20, insert tube 21, positioning groove 211, end plate 22, positioning protrusion 23, sealing ring 30, flange 40, first filter material 200, first cavity 210, cylinder 300, second cavity 320, second filter material 400, third cavity 410, fourth cavity 420, outer shell 500. DETAILED DESCRIPTION

[0039] 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.

[0040] Combination Figures 1 to 3 According to the skeleton component 100 of the embodiment of the utility model, it can be applied to the filter element 1000 of the water purification equipment. The skeleton component 100 includes: a skeleton 10 and an end cover 20. The skeleton 10 has a first end 11, a second end 12 and a first channel 131 arranged between the first end 11 and the second end 12. The first channel 131 can be configured to pass water; the end cover 20 is connected to the first end 11 of the skeleton 10, and the end cover 20 includes a cannula 21. At least a part of the cannula 21 is inserted into the first end 11 of the skeleton 10. In other words, the entire cannula 21 can be inserted into the first end 11 of the skeleton 10, or a part of the cannula 21 is inserted into the first end 11 of the skeleton 10, and the cannula 21 is connected to the first channel 131. After the cannula 21 is inserted into the first end 11, the water in the first channel 131 can be diverted through the cannula 21.

[0041] Exemplarily, the first channel 131 may be a water inlet channel, the second end 12 may be a water inlet end of the first channel 131, and the first end 11 may be a water outlet end of the first channel 131. After flowing to the first end 11, the water flow may be directed to the outside of the end cap 20 through the insert 21. It should be noted that the outside of the end cap 20 mentioned here refers to a side of the end cap 20 away from the first end 11. The skeleton assembly 100 can be used for a filter element 1000. Exemplarily, the filter element 1000 may also include a first filter material 200, a barrel 300, etc. The first filter material 200 may be arranged around the periphery of the skeleton 10, a first cavity 210 may be constructed between the first filter material 200 and the skeleton 10, the barrel 300 has a receiving cavity, the first filter material 200 may be arranged in the receiving cavity, and a second cavity 320 is constructed between the first filter material 200 and the receiving cavity, and the insert 21 may communicate with the second cavity 320. The water in the first channel 131 can be guided to the second cavity 320 through the insert tube 21, filtered through the first filter material 200, and then enter the first cavity 210. The first channel 131 of the skeleton 10 and the second cavity 320 can be connected through the end cover 20, so as to facilitate guiding the water to flow from the first channel 131 to the second cavity 320, optimize the pipeline of the filter element 1000, and facilitate filtering of water.

[0042] Of course, the first channel 131 can also be a water outlet channel, the first end 11 can be the water inlet end of the first channel 131, the second end 12 can be the water outlet end of the first channel 131, and the water outside the end cover 20 can be led into the first channel 131 through the insert 21, and the water can be discharged through the second end 12. The skeleton assembly 100 can be used for the filter element 1000. For example, the filter element 1000 can also include a first filter material 200, a cylinder 300, etc. The first filter material 200 can be arranged around the periphery of the skeleton 10, and a first cavity 210 can be constructed between the first filter material 200 and the skeleton 10. The cylinder 300 has a receiving cavity, the first filter material 200 can be arranged in the receiving cavity, and a second cavity 320 is constructed between the first filter material 200 and the receiving cavity, and the insert 21 can communicate with the second cavity 320. The raw water can first enter the first cavity 210, and then enter the second cavity 320 after being filtered by the first filter material 200. The water in the second cavity 320 can be diverted to the first channel 131 through the end cover 20, and the water can be discharged from the second end 12. By arranging a plug 21 on the end cover 20 to connect the first channel 131, the water in the second cavity 320 can be conveniently diverted to the first channel 131, thereby optimizing the pipeline of the filter element 1000.

[0043] In addition, inserting the insert tube 21 of the end cover 20 into the first end portion 11 can facilitate the positioning of the installation of the end cover 20 and improve the installation efficiency.

[0044] According to the skeleton assembly 100 of the embodiment of the utility model, by setting the insert tube 21 on the end cover 20, and the insert tube 21 is connected to the first channel 131, the water can be guided through the end cover 20, which is convenient for the filter material to filter the water, optimizes the pipeline of the filter element 1000, and improves the installation efficiency of the filter element.

[0045] The end cover 20 may have a first side surface and a second side surface opposite to each other, the insert tube 21 may be disposed on the first side surface, and the second side surface of the end cover 20 may be provided with a through hole, which is communicated with the insert tube 21 .

[0046] In addition, a first channel 131 is provided between the first end 11 and the second end 12 of the skeleton 10. Only the first channel 131 may be provided in the skeleton 10. Of course, a second channel 132 may also be provided in the skeleton 10. For example, water filtered by the filter material may flow into the second channel 132 and discharge through the second channel 132, making the skeleton 10 compact and improving space utilization.

[0047] Combination Figure 3 and Figure 4 In some embodiments of the utility model, the first end portion 11 includes a first section 111 and a second section 112 arranged in the axial direction, one end of the first section 111 is configured with a first interface 14 and the other end is connected to the second section 112, the inner circumference of the first section 111 is arranged around the outer side of the inner circumference of the second section 112 in the axial projection, and the cannula 21 is arranged through the first section 111 and the second section 112. Specifically, the inner circumference of the first section 111 is expanded outward relative to the inner circumference of the second section 112, and the cannula 21 is inserted into the first end portion 11. During installation, the cannula 21 first passes through the first section 111 and then passes through the second section 112. The inner circumference of the first section 111 is expanded outward, and the first section 111 can play a role of pre-positioning, which can facilitate the installation of the cannula 21 and improve the efficiency of assembly.

[0048] Among them, the inner circumference of the first section 111 is arranged around the outer side of the inner circumference of the second section 112 in the axial projection, and the projection of the first section 111 along the axis can be a circular ring, a square ring, an irregular ring, etc. For example, the inner circumferences of the first section 111 and the second section 112 can both be arranged as circular surfaces, and the inner diameter of the first section 111 is larger than the inner diameter of the second section 112; for another example, the size of the inner circumference of the second section 112 can be fixed, and the first section 111 gradually expands outward in the direction away from the second section 112; for another example, combined with Figure 7 and Figure 8 The inner circumference of the first section 111 may be provided with a positioning groove 15 and other structures, so that the inner circumference of the first section 111 is constructed into an irregular annular structure.

[0049] Exemplarily, a sealing ring 30 may be provided on the insert tube 21, and the sealing ring 30 may be sealed with the second section 112, so as to prevent water in the first channel 131 from flowing out from the gap between the outer peripheral surface of the insert tube 21 and the inner peripheral surface of the first end portion 11, thereby improving the sealing performance of the skeleton assembly 100. When the insert tube 21 is installed to the first end portion 11, it first passes through the first section 111. The inner peripheral surface of the first section 111 is relatively large, and the first section 111 can play a role in pre-positioning. The sealing ring 30 will not be over-compressed when passing through the first section 111, thereby preventing the sealing ring 30 from being displaced during the installation process. After the insert tube 21 is pushed into the second section 112, the sealing ring 30 abuts against the second section 112 and seals with the second section 112, thereby improving the installation efficiency of the filter element 1000.

[0050] In some embodiments of the present invention, the inner diameter of the first section 111 is greater than the inner diameter of the second section 112, wherein the first section 111 and the second section 112 may both be circular surfaces, which is convenient for processing and forming the skeleton 10. The inner diameter of the first section 111 is relatively large, and the first section 111 may play a role of pre-positioning, which is convenient for inserting the cannula 21 into the skeleton 10, thereby improving the assembly efficiency of the filter element 1000.

[0051] In some embodiments of the present invention, the first section 111 gradually expands outward in a direction away from the second section 112, and the first section 111 forms a flared structure. When the insert tube 21 is installed, the insert tube 21 can first pass through the first section 111 and then pass through the second section 112, wherein the first section 111 can play a guiding role, facilitating the smooth insertion of the insert tube 21 into the first end portion 11 of the skeleton 10.

[0052] Combination Figure 4 In some embodiments of the present invention, a connecting surface 113 is provided between the inner circumference of the first section 111 and the inner circumference of the second section 112. The connecting surface 113 connects the inner circumference of the first section 111 and the inner circumference of the second section 112. The connecting surface 113 can be set to different structures.

[0053] The inner circumference of the first section 111 , the inner circumference of the second section 112 and the connecting surface 113 form a step structure, which facilitates the processing and forming of the skeleton 10 .

[0054] In some embodiments of the present invention, the connecting surface 113 can be configured to gradually expand outward from the second section 112 to the first section 111. In other words, the connecting surface 113 gradually contracts from the first section 111 to the second section 112. The inner diameter of the second section 112 is smaller, and the connecting surface 113 can play a guiding role, facilitating the smooth transition of the cannula 21 from the first section 111 to the second section 112.

[0055] In some embodiments of the present invention, the connecting surface 113 is configured as an arcuate surface or a conical surface along the axial direction of the skeleton 10 to make the transition between the first section 111 and the second section 112 smooth, thereby facilitating the smooth transition of the cannula 21 from the first section 111 to the second section 112 .

[0056] Combination Figure 5 and Figure 6 In some embodiments of the utility model, the inner diameter size of the first section 111 is d1, and the inner diameter size of the second section 112 is d2, wherein d1-d2≥0.6mm, wherein the outer circumferential surface of the insert tube 21 can abut against the inner circumferential surface of the second section 112, or a sealing ring 30 and other structures are provided on the outer circumferential surface of the insert tube 21, and the sealing ring 30 abuts against the inner circumferential surface of the second section 112, and the inner diameter of the second section 112 is larger than the inner diameter of the first section 111 by more than 0.6mm, so that the insert tube 21 can pass through the first section 111 smoothly during installation. When installing the insert tube 21, the first section 111 can play a role of pre-positioning, thereby improving the installation efficiency of the skeleton assembly 100.

[0057] Combination Figure 5 and Figure 6 In some embodiments of the present invention, the inner diameter of the first section 111 is d1, and the outer diameter of the cannula 21 is d3, wherein d1-d3≥1mm. The first section 111 and the cannula 21 may be clearance-fitted, so that the cannula 21 may pass smoothly through the first section 111 during installation. When installing the cannula 21, the first section 111 may play a role in pre-positioning, thereby improving the installation efficiency of the skeleton assembly 100.

[0058] It should be noted that in some embodiments of the present invention, Fig. 9 and Fig.10 As shown, a positioning protrusion 23 may be provided on the outer circumferential surface of the insert tube 21, and a positioning groove 15 and other structures may be provided on the first section 111, wherein the inner diameter of the first section 111 mentioned above refers to the inner diameter excluding the positioning groove 15, and the outer diameter of the insert tube 21 refers to the outer diameter excluding the positioning protrusion 23.

[0059] In some embodiments of the present invention, a first sealing structure is provided on the insert tube 21, and the first sealing structure cooperates with the first section 111 to seal. The first sealing structure can seal the gap between the first section 111 and the outer peripheral surface of the insert tube 21, and can prevent the water in the first channel 131 from flowing out from the gap between the outer peripheral surface of the insert tube 21 and the inner peripheral surface of the first end 11, thereby improving the sealing performance of the skeleton assembly 100. In combination with the above, in the axial projection, the inner peripheral surface of the first section 111 is arranged outside the inner peripheral surface of the second section 112, and by sealingly cooperating with the first section 111, on the one hand, it is convenient to install the insert tube 21, and the installation efficiency of the insert tube 21 can be improved, and on the other hand, the gap between the first section 111 and the insert tube 21 can be sealed, thereby improving the sealing performance of the skeleton assembly 100.

[0060] In some embodiments of the utility model, a second sealing structure is provided on the insert tube 21, and the second sealing structure cooperates with the second section 112 for sealing. In combination with the foregoing, in the axial projection, the inner circumference of the first section 111 is arranged on the outer side of the inner circumference of the second section 112. When passing through the first section 111, the second sealing structure will not be excessively squeezed, thereby avoiding displacement of the second sealing structure during the installation process, and the second sealing structure can seal the gap between the insert tube 21 and the second section 112, thereby improving the sealing performance of the skeleton assembly 100.

[0061] In some embodiments of the present invention, the first sealing structure and the second sealing structure may be provided on the insertion tube 21 at the same time, so as to improve the sealing performance of the skeleton assembly 100 .

[0062] Combination Fig.11 In some embodiments of the utility model, a positioning groove 211 is provided on the outer circumferential surface of the cannula 21, and the skeleton assembly 100 also includes a sealing ring 30 arranged in the positioning groove 211, and the sealing ring 30 abuts against the inner circumferential surface of the skeleton 10. The sealing ring 30 is positioned by setting the positioning groove 211 to improve the structural stability of the sealing ring 30, and in the process of installing the cannula 21 to the skeleton 10, the displacement of the sealing ring 30 can be avoided, thereby improving the sealing performance of the skeleton assembly 100.

[0063] In some embodiments of the present invention, the frame 10 is integrally formed, which improves the structural strength of the frame 10 and can increase production efficiency.

[0064] In combination with the above, the insert tube 21 is inserted into the first end portion 11 of the skeleton 10. The first end portion 11 includes a first section 111 and a second section 112. The first section 111 can expand outward relative to the second section 112 to facilitate the installation of the skeleton 10 and the end cover 20. By setting the skeleton 10 into an integrally formed structure, the processing and forming of the skeleton 10 is facilitated.

[0065] According to the filter element 1000 of the embodiment of the utility model, it includes the aforementioned skeleton assembly 100. By setting the aforementioned skeleton assembly 100, the pipeline of the filter element 1000 is optimized to facilitate the filtering of water through the filter material, and the first end 11 of the skeleton 10 can position the installation of the end cover 20, thereby improving the installation efficiency of the filter element 1000.

[0066] Combination Fig.12 Furthermore, the skeleton assembly 100 may also include a first filter material 200 and a barrel 300, the first filter material 200 is arranged around the periphery of the skeleton 10, and a first cavity 210 is constructed between the first filter material 200 and the skeleton 10; the barrel 300 has a accommodating cavity for accommodating the first filter material 200, and a second cavity 320 is constructed between the barrel 300 and the first filter material 200; wherein the insert tube 21 is connected to the second cavity 320.

[0067] For example, in combination Fig.13 The first channel 131 can be configured as a water inlet channel, water can enter the first channel 131 from the second end 12, and flow into the second cavity 320 through the insert 21 of the end cap 20. The water in the second cavity 320 is filtered by the first filter material 200 and enters the first cavity 210. By radial filtering, the filtering area can be effectively increased, thereby increasing the flow rate and reducing the size and volume of the filter element 1000 assembly.

[0068] Combination Fig.12 The end cover 20 may further include an end plate 22 , and the end plate 22 may be used to position the first filter material 200 , thereby making the layout of the filter element 1000 compact and improving the installation efficiency of the filter element 1000 .

[0069] Exemplarily, the frame 10 may also be provided with a flange 40, and a receiving cavity is constructed between the cylinder 300 and the flange 40. Specifically, the flange 40 is connected to the frame 10, and is opposite to the end cover 20 along the axial direction of the frame 10, the flange 40 is covered on the cylinder 300, and a closed receiving cavity is constructed with the cylinder 300, and the receiving cavity may have a first filter material 200, a first cavity 210 is provided between the first filter material 200 and the frame 10, and a second cavity 320 is provided between the first filter material 200 and the cylinder 300.

[0070] A fixing groove surrounding the frame 10 is provided on the side of the flange 40 facing the end plate 22 and on the side of the end plate 22 facing the flange 40. Both ends of the first filter material 200 are respectively positioned in the fixing grooves, thereby realizing the positioning of the first filter material 200. At the same time, the first cavity 210 and the second cavity 320 are separated so that water can be filtered through the first filter material 200.

[0071] Therefore, after the end cap 20 is installed to the frame 10, on the one hand, the water in the first channel 131 can be guided to the second cavity 320 through the insert tube 21, thereby optimizing the flow path of the filter element 1000 and facilitating filtering of water through the first filter material 200; on the other hand, the first filter element 1000 can be positioned through the end cap 20, thereby optimizing the overall structure of the filter element 1000.

[0072] Combination Figure 7 and Fig.12 Furthermore, the skeleton 10 also has a second channel 132, one end of which is connected to the first cavity 210. Exemplarily, the second channel 132 can be configured as a water outlet channel, and the water filtered by the first filter element 1000 can be discharged from the second channel 132. Thus, the skeleton 10 has both a water inlet channel and a water outlet channel, thereby improving the space utilization of the filter element 1000.

[0073] Combination Fig.12 For example, an inlet 1321 may be provided on the outer circumference of the frame 10, and the first cavity 210 and the second channel 132 are connected through the inlet 1321. Fig.13 , the arrow shows the direction of water flow. Specifically, after the water enters the first channel 131, it is guided to the second cavity 320 between the cylinder 300 and the first filter material 200 through the insert tube 21, then filtered through the first filter material 200 and enters the first cavity 210, and then enters the second channel 132 through the inlet 1321.

[0074] Combination Fig.12 In some embodiments of the present invention, the filter element 1000 further includes: a second filter material 400 and a shell 500, the second filter material 400 is arranged around the periphery of the skeleton 10, and a third cavity 410 is constructed between the second filter material 400 and the skeleton 10; a fourth cavity 420 is constructed between the shell 500 and the second filter material 400.

[0075] For example, the fourth chamber 420 may have a water inlet channel, and the third chamber 410 may have a water outlet channel. Fig.14 , the arrows show the direction of water flow, specifically, after water enters the fourth chamber 420, it can enter the third chamber 410 after being filtered by the second filter material 400, and then exit through the water outlet of the filter element 1000. By radial filtering, the filtering area can be effectively increased, thereby increasing the flow rate and reducing the size and volume of the filter element 1000.

[0076] Among them, the filter element 1000 of the embodiment of the utility model may only have the first filter material 200, or the filter element 1000 may have both the first filter material 200 and the second filter material 400. In the scheme where the filter element 1000 has both the first filter material 200 and the second filter material 400, the filter element 1000 has the function of two-stage filtration at the same time, that is, two-stage filtration is integrated on the same filter element 1000. Exemplarily, the first filter material 200 may be configured as pre-filtering, the second filter material 400 may be configured as post-filtering, or the first filter material 200 may be configured as post-filtering, and the second filter material 400 may be configured as pre-filtering. By integrating the pre-filtering and post-filtering on one filter element 1000, the frequency of users replacing the filter element 1000 is reduced, and the pre-filter element 1000 and the post-filter element 1000 are integrated into one filter element 1000, which can reduce the components of the water purifier, make the structure of the water purifier compact, and improve the space utilization of the water purifier.

[0077] In some embodiments of the utility model, the frame 10 is provided with a flange 40, and a receiving cavity is constructed between the cylinder 300 and the flange 40. Specifically, the flange 40 is connected to the frame 10, and is opposite to the end cover 20 along the axial direction of the pipeline frame 10, the flange 40 is covered on the cylinder 300, and a closed receiving cavity is constructed with the cylinder 300, and the first filter material 200 may be arranged in the receiving cavity, a first cavity 210 is arranged between the first filter material 200 and the frame 10, and a second cavity 320 is arranged between the first filter material 200 and the cylinder 300.

[0078] In addition, in an embodiment in which the filter element 1000 has both a first filter material 200 and a second filter material 400, the flange 40 may have relative upper and lower sides, the upper side of the flange 40 may position the second filter material 400, and the lower side of the flange 40 may position the first filter material 200, the flange 40 cooperates with the cylinder 300 to isolate an independent filter chamber, and the flange 40 cooperates with the outer shell 500 to isolate another independent filter chamber, so that the filter element 1000 has two independent filter chambers at the same time, has the function of two-stage filtration, and has a compact structure.

[0079] For example, the flange 40 and the cylinder 300 may be connected by welding. The flange 40 and the first filter material 200 or the second filter material 400 may be connected and sealed by hot melt adhesive.

[0080] Furthermore, the flange 40 is integrally formed with the frame 10 , which improves the structural strength of the frame 10 and facilitates the processing and forming of the frame 10 .

[0081] Optionally, combined Figure 7, wherein the skeleton 10 may include a first channel 131 and a second channel 132, one end of the first channel 131 may be arranged on the circumferential surface of the second end 12, and the other end may be arranged on the end surface of the first end 11 of the skeleton 10, one end of the second channel 132 may be arranged on the circumferential surface of the skeleton 10 (between the first end 11 and the second end 12), and the other end may be arranged on the end surface of the second end 12.

[0082] The skeleton 10 can be configured as a long strip. In addition, the skeleton 10 can include a first half shell, a second half shell and an intermediate shell, the first half shell and the second half shell are respectively connected to opposite sides of the intermediate shell, a first channel 131 is formed between the first half shell and the intermediate shell, a second channel 132 is formed between the second half shell and the intermediate shell, the cross section of the first half shell can be configured as an arc, the cross section of the second half shell can be configured as an arc, the cross section of the intermediate shell can be configured as a straight line, and the radial dimension of the first half shell can be the same as or different from the radial dimension of the second half shell.

[0083] In some embodiments of the present invention, the filter element 1000 further includes a flange 40, the flange 40 is connected to the frame 10, and the filter element 1000 includes a first filter material 200 arranged on one side of the flange 40 and / or a second filter material 400 arranged on the other side of the flange 40, and the flange 40 and the frame 10 are a split structure or an integrated structure. In combination with the above-mentioned embodiments, the filter element 1000 may include an end cover 20, the end cover 20 may be opposite to the flange 40 along the axial direction, and the first filter material 200 may be positioned between the end cover 20 and the flange 40; in addition, the filter element 1000 assembly may also include a cover body, the cover body may be opposite to the flange 40 along the axis, and the second filter material 400 is arranged between the cover body and the flange 40.

[0084] The water purification device according to the embodiment of the present invention may include the aforementioned skeleton assembly 100 , or include the aforementioned filter element 1000 .

[0085] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "inside", "outside", "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 invention and simplifying the description, and do not indicate or imply that the device or element referred to 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 invention.

[0086] 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 the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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 filter element skeleton assembly (100), characterized in that: include: A frame (10), the frame (10) having a first end (11), a second end (12), and a first channel (131) disposed between the first end (11) and the second end (12); An end cap (20), the end cap (20) being connected to the first end portion (11) of the frame (10), the end cap (20) comprising a cannula (21), at least a portion of the cannula (21) being inserted into the first end portion (11) of the frame (10) and communicating with the first channel (131).

2. The filter element skeleton assembly (100) according to claim 1, characterized in that: The first end portion (11) comprises a first section (111) and a second section (112) arranged along the axial direction, one end of the first section (111) is configured with a first interface (14) and the other end is connected to the second section (112), the inner circumference of the first section (111) is arranged around the outer side of the inner circumference of the second section (112) in the axial projection, and the insertion tube (21) is passed through the first section (111) and the second section (112).

3. The filter element skeleton assembly (100) according to claim 2, characterized in that: The inner diameter of the first section (111) is greater than the inner diameter of the second section (112); or, the first section (111) gradually expands outward in a direction away from the second section (112).

4. The filter element skeleton assembly (100) according to claim 2, characterized in that: A connecting surface (113) is provided between the inner circumference of the first section (111) and the inner circumference of the second section (112), wherein the connecting surface (113) connects the inner circumference of the first section (111) and the inner circumference of the second section (112). The inner circumferential surface of the first section (111), the inner circumferential surface of the second section (112) and the connecting surface (113) form a step structure; or, the connecting surface (113) is configured to gradually expand outward from the second section (112) to the first section (111); or, the connecting surface (113) is configured to be an arcuate surface or a conical surface along the axial direction of the skeleton (10).

5. The filter element skeleton assembly (100) according to claim 2, characterized in that: The inner diameter of the first section (111) is d1, and the inner diameter of the second section (112) is d2, wherein d1-d2≥0.6 mm; And / or, the inner diameter of the first section (111) is d1, and the outer diameter of the cannula (21) is d3, wherein d1-d3≥1 mm.

6. The filter element skeleton assembly (100) according to claim 2, characterized in that: The insert tube (21) is provided with a first sealing structure, and the first sealing structure cooperates with the first section (111) to seal; and / or the insert tube (21) is provided with a second sealing structure, and the second sealing structure cooperates with the second section (112) to seal.

7. The filter element skeleton assembly (100) according to claim 1, characterized in that: The outer circumferential surface of the insertion tube (21) is provided with a positioning groove (211), and the skeleton assembly (100) further comprises a sealing ring (30) arranged in the positioning groove (211), and the sealing ring (30) abuts against the inner circumferential surface of the skeleton (10).

8. The filter element skeleton assembly (100) according to claim 1, characterized in that: The frame (10) is integrally formed.

9. A filter element (1000), characterized in that: include: The skeleton assembly (100) according to any one of claims 1 to 8, A first filter material (200), the first filter material (200) being arranged around the periphery of the frame (10), and a first cavity (210) being constructed between the first filter material (200) and the frame (10); A cylinder (300), wherein the cylinder (300) has a receiving cavity for receiving the first filter material (200), and a second cavity (320) is formed between the cylinder (300) and the first filter material (200); Wherein, the cannula (21) is connected to the second cavity (320).

10. The filter element (1000) according to claim 9, characterized in that: The skeleton (10) further comprises a second channel (132), one end of the second channel (132) being connected to the first cavity (210).

11. The filter element (1000) according to claim 9, characterized in that: Also includes: A second filter material (400), the second filter material (400) being arranged around the periphery of the frame (10), and a third cavity (410) being constructed between the second filter material (400) and the frame (10); A housing (500) is provided, wherein a fourth cavity (420) is formed between the housing (500) and the second filter material (400).

12. The filter element (1000) according to claim 9, characterized in that: The frame (10) is provided with a flange (40), and the accommodating cavity is constructed between the cylinder (300) and the flange (40).

13. The filter element (1000) according to claim 12, characterized in that: The flange (40) and the frame (10) are integrally formed.

14. A water purification device, characterized in that: A skeleton assembly (100) comprising the filter element according to any one of claims 1 to 8, or a filter element (1000) comprising any one of claims 9 to 13.

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