Water purification structure and water purification equipment thereof

Abstract

The utility model discloses a water purification structure and water purification equipment thereof, the water purification structure comprises a central pipe and a filter assembly, the outer side wall of the central pipe is provided with a water inlet, and the upper end of the central pipe is provided with a water outlet; the filtering assembly comprises a first filtering piece, a reverse osmosis membrane and a second filtering piece, the first filtering piece is arranged in the central pipe, the central pipe is sequentially sleeved with the reverse osmosis membrane and the second filtering piece, an interval space is formed between the reverse osmosis membrane and the second filtering piece, and the reverse osmosis membrane comprises a first water inlet face, a first pure water outlet face and a concentrated water outlet face; the second filtering piece comprises a second water inlet surface and a second pure water outlet surface, and the first water inlet surface and the second pure water outlet surface are communicated with the interval space; according to the utility model, the interval space is arranged between the reverse osmosis membrane and the second filtering piece, so that the reverse osmosis membrane of which water enters from the bottom, pure water exits from the inner side and concentrated water exits from the upper end can be adopted, glue coating is avoided, glue coating procedures are reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a water purification structure and its water purification equipment. Background Technology

[0002] The existing water purification structure includes carbon rods, reverse osmosis membranes and carbon fiber filter elements arranged sequentially from the inside out, achieving multi-stage filtration. However, the reverse osmosis membrane and carbon fiber filter elements need to be glued together, which requires a glue application process during the assembly of the water purification structure, increasing manufacturing costs. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a water purification structure and a water purification device thereof.

[0004] According to a first aspect of the present invention, a water purification structure includes a central tube and a filter assembly. The outer wall of the central tube has an inlet, and the upper end of the central tube has an outlet. The filter assembly includes a first filter element, a reverse osmosis membrane, and a second filter element. The first filter element is disposed inside the central tube, and the reverse osmosis membrane and the second filter element are sequentially sleeved outside the central tube. There is a space between the reverse osmosis membrane and the second filter element. The reverse osmosis membrane includes a first inlet surface disposed at the lower end of the reverse osmosis membrane, a first pure water outlet surface disposed inside the reverse osmosis membrane, and a concentrated water outlet surface disposed at the upper end of the reverse osmosis membrane. The second filter element includes a second inlet surface disposed outside the second filter element and a second pure water outlet surface disposed inside the second filter element. The first inlet surface and the second pure water outlet surface are in communication with the space.

[0005] According to some embodiments of the present invention, a fixing component is also included, the fixing component including an upper end cover and a lower end cover, the upper end cover and the lower end cover being spaced apart in the vertical direction, and the central tube, the reverse osmosis membrane and the second filter element being disposed between the upper end cover and the lower end cover;

[0006] Both the upper end cap and the lower end cap have annular first mounting positions. The upper end cap has a second mounting position located within the first mounting position. The second filter element is disposed within the first mounting position, and the central tube and the reverse osmosis membrane are disposed on the second mounting position.

[0007] According to some embodiments of the present invention, the lower end cap has an annular first positioning rib, the top of the first positioning rib has a step, the bottom of the central tube is sleeved on the step, and the reverse osmosis membrane is sleeved outside the central tube.

[0008] According to some embodiments of the present invention, the upper end cover and the lower end cover both have annular second positioning ribs and annular third positioning ribs. The third positioning rib is located inside the second positioning rib, and the third positioning rib and the second positioning rib enclose the first mounting position. The second filter element is installed between the second positioning rib and the third positioning rib.

[0009] The outer side of the first positioning rib has a plurality of fourth positioning ribs spaced apart along the circumferential direction of the first positioning rib. The side of the fourth positioning rib away from the first positioning rib is connected to the third positioning rib, and the bottom of the reverse osmosis membrane is placed on the fourth positioning rib.

[0010] According to some embodiments of the present invention, there is a gap between the top of the fourth positioning rib on the side away from the first positioning rib and the bottom of the reverse osmosis membrane, and the height of the upper end of the third positioning rib is the same as the height of the bottom surface of the gap.

[0011] According to some embodiments of the present invention, both the upper end cover and the lower end cover have multiple protrusions. The multiple protrusions are located within the first mounting position and are spaced apart along the circumferential direction of the first mounting position. The height of the protrusions is lower than the height of the third positioning rib. The upper and lower ends of the second filter element respectively abut against the protrusions of the upper end cover and the protrusions of the lower end cover.

[0012] According to some embodiments of the present invention, the upper end cover has a plurality of fifth positioning ribs, the plurality of fifth positioning ribs are spaced apart along the circumferential direction of the upper end cover and located within the third positioning rib, the plurality of fifth positioning ribs and the third positioning rib surround to form the second mounting position, and a part of the central tube and the reverse osmosis membrane are disposed between the plurality of fifth positioning ribs and the third positioning rib.

[0013] According to some embodiments of the present invention, the outer diameter of the third positioning rib gradually decreases from top to bottom, and the second filter element is sleeved on the outside of the third positioning rib.

[0014] According to some embodiments of the present invention, the first filter element is a carbon rod, and the second filter element is a carbon fiber filter element.

[0015] The water purification structure according to the embodiments of this utility model has at least the following technical effects:

[0016] 1. By providing a space between the reverse osmosis membrane and the second filter element, a reverse osmosis membrane with bottom water inlet, inner pure water outlet, and top concentrated water outlet can be used. This avoids the need for glue application, reduces the glue application process, lowers costs, and since the reverse osmosis membrane is a universal membrane, there is no need to redesign and manufacture it. This further reduces costs while still meeting filtration requirements.

[0017] The water purification device according to a second aspect embodiment of the present invention includes the water purification structure of the first aspect embodiment.

[0018] The water purification device according to the embodiments of this utility model has at least the following technical effects:

[0019] 1. The water purification equipment, by incorporating the water purification structure of the first embodiment of this utility model, makes the entire equipment structure compact, effectively reducing the overall size of the machine. In later maintenance, it reduces the cost of replacing and maintaining the filter element. It also has fewer water connection parts, making assembly simple and reliable, and lowering the risk of leakage.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a cross-sectional view of the water purification structure according to an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 The diagram shows the water flow path of the water purification system;

[0024] Figure 3 This is a schematic diagram of the upper end cap structure;

[0025] Figure 4 This is a schematic diagram of the lower end cap structure;

[0026] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 6 This is a cross-sectional axonometric view of the water purification structure.

[0028] Reference numerals: center tube 100, inlet 110, outlet 120, first filter element 200, reverse osmosis membrane 300, first inlet surface 310, first pure water outlet surface 320, concentrated water outlet surface 330, second filter element 400, second inlet surface 410, second pure water outlet surface 420, space 500, fixing component 600, upper end cover 610, first mounting position 611, second mounting position 612, protrusion 613, fifth positioning rib 614, lower end cover 620, first positioning rib 621, step 6211, second positioning rib 622, third positioning rib 623, fourth positioning rib 624, notch 6241, bottom surface 6242. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Reference Figure 1 , 2 As shown, the water purification structure according to the first embodiment of this utility model includes a central tube 100 and a filter assembly. The outer wall of the central tube 100 has an inlet 110, and the upper end of the central tube 100 has an outlet 120. The filter assembly includes a first filter element 200, a reverse osmosis membrane 300, and a second filter element 400. The first filter element 200 is disposed inside the central tube 100, and the reverse osmosis membrane 300 and the second filter element 400 are sequentially sleeved on the outside of the central tube 100. The space has a gap 500. The reverse osmosis membrane 300 includes a first inlet surface 310 at the lower end of the reverse osmosis membrane 300, a first pure water outlet surface 320 at the inner side of the reverse osmosis membrane 300, and a concentrated water outlet surface 330 at the upper end of the reverse osmosis membrane 300. The second filter element 400 includes a second inlet surface 410 at the outer side of the second filter element 400 and a second pure water outlet surface 420 at the inner side of the second filter element 400. The first inlet surface 310 and the second pure water outlet surface 420 are in communication with the gap 500.

[0034] By providing a space 500 between the reverse osmosis membrane 300 and the second filter element 400, a reverse osmosis membrane 300 with bottom water inlet, inner pure water outlet and upper concentrated water outlet can be used, thereby avoiding the need for glue application, reducing the glue application process, lowering costs, and the reverse osmosis membrane 300 being a universal reverse osmosis membrane 300, which does not require redesign and manufacturing, thus further reducing costs while meeting filtration requirements.

[0035] At work, such as Figure 1 , 2 As shown, raw water enters from the second inlet surface 410 outside the second filter element 400, and after being filtered by the second filter element 400, it is discharged from the second pure water outlet surface 420. The discharged water enters the space 500 and flows downward along the space 500. The water then enters the reverse osmosis membrane 300 through the first inlet surface 310 at the lower end of the reverse osmosis membrane 300. The concentrated water produced after filtration is discharged from the concentrated water outlet surface 330 at the upper end of the reverse osmosis membrane 300, while the filtered water is discharged from the first pure water outlet surface 320 inside the reverse osmosis membrane 300 and enters the central tube 100 through the inlet 110 on the side wall of the central tube 100. After entering the central tube 100, the water flows upward along the central tube 100 and passes through the first filter element 200. After being filtered by the first filter element 200, the filtered pure water is discharged from the outlet 120 at the upper end of the central tube 100. That is, the raw water is filtered layer by layer from the outside to the inside to ensure the filtration effect.

[0036] When water passes through the second filter element 400, the second filter element 400 intercepts the silt and rust in the water and adsorbs organic matter, discoloration, odor, etc. in the water; when water passes through the reverse osmosis membrane 300, the reverse osmosis membrane 300 removes dissolved salts, colloids, microorganisms and organic matter and other impurities in the water to ensure water purity; when water passes through the first filter element 200, the taste of the water is improved.

[0037] This utility model integrates the first filter element 200, the second filter element 400, and the reverse osmosis membrane 300 into a water purification structure. The raw water is filtered multiple times in the water purification structure before being discharged, making the structure more compact. When the water purification structure is installed on a water dispenser, it can effectively reduce the overall size of the machine. In later maintenance, it reduces the cost of replacing and maintaining the filter element. In addition, there are fewer water circuit connection parts, making the assembly simple and reliable, and the risk of water leakage is low.

[0038] In some embodiments of this utility model, such as Figure 1 As shown, it also includes a fixing component 600, which includes an upper end cover 610 and a lower end cover 620. The upper end cover 610 and the lower end cover 620 are spaced apart in the vertical direction. The central tube 100, the reverse osmosis membrane 300 and the second filter element 400 are all located between the upper end cover 610 and the lower end cover 620.

[0039] like Figure 1, 3 As shown in Figure 4, both the upper end cover 610 and the lower end cover 620 have annular first mounting positions 611. The upper end cover 610 has a second mounting position 612 located within the first mounting position 611. The second filter element 400 is disposed within the first mounting position 611, and the central tube 100 and the reverse osmosis membrane 300 are disposed on the second mounting position 612.

[0040] By providing a first mounting position 611 and a second mounting position 612, during the assembly of the water purification structure, the first mounting position 611 can position and install the second filter element 400, and the second mounting position 612 can position and install the central tube 100 and the reverse osmosis membrane 300, making assembly easier. In addition, the first mounting position 611 and the second mounting position 612 also limit the movement of the second filter element 400, the central tube 100 and the reverse osmosis membrane 300, thereby improving the reliability of the water purification structure.

[0041] Furthermore, since the first mounting position 611 and the second mounting position 612 limit the movement of the second filter element 400, the central tube 100 and the reverse osmosis membrane 300, the second filter element 400 and the reverse osmosis membrane 300 do not need to be fixed with glue, thereby eliminating the glue application process and reducing labor costs.

[0042] It is understandable that the second mounting position 612 is located within the hollow portion of the annular first mounting position 611.

[0043] Understandably, the reverse osmosis membrane 300 can be pre-attached to the outside of the central tube 100. During assembly, glue can be applied to the first mounting position 611 and the second mounting position 612. The central tube 100 and the reverse osmosis membrane 300 are inserted into the second mounting position 612 of the upper end cover 610. The second filter element 400 is sleeved on the outside of the reverse osmosis membrane 300 and inserted into the first mounting position 611 of the upper end cover 610. Then, the second filter element 400 is inserted into the first mounting position 611 of the lower end cover 620.

[0044] In a further embodiment of this utility model, such as Figure 4 , 5 As shown, the lower end cap 620 has an annular first positioning rib 621, the top of the first positioning rib 621 has a step 6211, the bottom of the central tube 100 is sleeved on the step 6211, and the reverse osmosis membrane 300 is sleeved on the outside of the central tube 100.

[0045] By fitting the central tube 100 over the step 6211, the bottom of the central tube 100 can be sealed to the first positioning rib 621, preventing water from entering the central tube 100 from the bottom. This also creates a gap α between the lower end of the reverse osmosis membrane 300 and the lower end cap 620 in the vertical direction, allowing water in the space 500 to enter the reverse osmosis membrane 300 through the gap α from the first inlet surface 310 at the lower end of the reverse osmosis membrane 300.

[0046] In a further embodiment of this utility model, such as Figure 3 , 4 As shown in Figure 5, both the upper end cover 610 and the lower end cover 620 have annular second positioning ribs 622 and annular third positioning ribs 623. The third positioning rib 623 is located inside the second positioning rib 622. The third positioning rib 623 and the second positioning rib 622 enclose each other to form a first mounting position 611. The second filter element 400 is installed between the second positioning rib 622 and the third positioning rib 623.

[0047] like Figure 1 As shown, the outer side of the first positioning rib 621 has a plurality of fourth positioning ribs 624 spaced apart along the circumferential direction of the first positioning rib 621. The side of the fourth positioning rib 624 away from the first positioning rib 621 is connected to the third positioning rib 623, and the bottom of the reverse osmosis membrane 300 is placed on the fourth positioning rib 624.

[0048] like Figure 5 As shown, by setting the third positioning rib 623, a space 500 is created between the second filter element 400 and the reverse osmosis membrane 300. Furthermore, due to the setting of the third positioning rib 623, the third positioning rib 623 can prevent the glue in the first mounting position 611 from flowing to the upper and lower ends of the reverse osmosis membrane 300, forming a glue barrier effect, thereby avoiding affecting the water inlet or outlet of the reverse osmosis membrane 300.

[0049] like Figure 4 , 5 As shown, by providing a fourth positioning rib 624, the fourth positioning rib 624 can support the bottom of the reverse osmosis membrane 300, and since multiple fourth positioning ribs 624 are arranged in a circumferential interval, the water inlet area at the bottom of the reverse osmosis membrane 300 is maximized while supporting the reverse osmosis membrane 300.

[0050] Specifically, the height of the third positioning rib 623 on the lower end cover 620 is lower than the height of the fourth positioning rib 624.

[0051] In a further embodiment of this utility model, such as Figure 5As shown, there is a gap 6241 between the top of the fourth positioning rib 624 on the side away from the first positioning rib 621 and the bottom of the reverse osmosis membrane 300, and the height of the upper end of the third positioning rib 623 is the same as the height of the bottom surface 6242 of the gap 6241.

[0052] like Figure 4 As shown, there is a liquid flow channel space β between two adjacent fourth positioning ribs 624. By providing a notch 6241, water in one liquid flow channel space β can flow to the other liquid flow channel space β through the notch 6241, thereby increasing the water inlet area or making the water inlet of the reverse osmosis membrane 300 smoother.

[0053] In a further embodiment of this utility model, such as Figure 4 , 5 As shown, both the upper end cover 610 and the lower end cover 620 have multiple protrusions 613. The multiple protrusions 613 are located within the first mounting position 611 and are spaced apart along the circumferential direction of the first mounting position 611. The height of the protrusions 613 is lower than the height of the third positioning rib 623. The upper and lower ends of the second filter element 400 abut against the protrusions 613 of the upper end cover 610 and the protrusions 613 of the lower end cover 620, respectively.

[0054] By providing multiple protrusions 613, and thus having a receiving space between adjacent protrusions 613, it is convenient to accommodate glue, so that the second filter element 400 is more firmly attached to the upper end cover 610 and the lower end cover 620.

[0055] In a further embodiment of this utility model, such as Figure 3 As shown, the upper end cover 610 has a plurality of fifth positioning ribs 614. The plurality of fifth positioning ribs 614 are spaced apart along the circumferential direction of the upper end cover 610 and are located within the third positioning rib 623. The plurality of fifth positioning ribs 614 and the third positioning rib 623 enclose to form a second mounting position 612. A part of the central tube 100 and the reverse osmosis membrane 300 are disposed between the plurality of fifth positioning ribs 614 and the third positioning rib 623.

[0056] like Figure 6 As shown, the second mounting position 612 is formed by the fifth positioning ribs 614 and the third positioning ribs 623 arranged at multiple intervals, and there is a flow channel between two adjacent fifth positioning ribs 614, which facilitates the discharge of concentrated water from the concentrated water surface 330.

[0057] In a further embodiment of this utility model, such as Figure 3 As shown, the outer diameter of the third positioning rib 623 gradually decreases from top to bottom, and the second filter element 400 is sleeved on the outside of the third positioning rib 623.

[0058] The third positioning rib 623 adopts the above structure, which makes it easier for the second filter element 400 to be fitted onto the third positioning rib 623.

[0059] In some embodiments of this utility model, the first filter element 200 is a carbon rod, which better improves the taste of water, and the second filter element 400 is a carbon fiber filter element, which better intercepts sediment, rust, organic matter, and off-colors and odors in the water.

[0060] Specifically, the carbon fiber filter element is composed of a carbon fiber layer and a non-woven fabric layer, replacing the PP cotton filter element and the pre-activated carbon filter element.

[0061] The water purification device of the second embodiment of the present invention includes the water purification structure of the first embodiment of the present invention.

[0062] The water purification equipment, by incorporating the water purification structure of the first embodiment of this utility model, achieves a compact overall structure, effectively reducing the size of the machine. In later maintenance, it reduces the cost of replacing and maintaining the filter element, has fewer water circuit connection parts, is simple and reliable to assemble, and has a low risk of leakage.

[0063] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water purification structure, characterized in that, include: A central tube, wherein the outer wall of the central tube has an inlet and the upper end of the central tube has an outlet; A filtration assembly includes a first filter element, a reverse osmosis membrane, and a second filter element. The first filter element is disposed inside the central tube. The reverse osmosis membrane and the second filter element are sequentially sleeved outside the central tube. There is a space between the reverse osmosis membrane and the second filter element. The reverse osmosis membrane includes a first inlet surface at the lower end of the reverse osmosis membrane, a first pure water outlet surface inside the reverse osmosis membrane, and a concentrated water outlet surface at the upper end of the reverse osmosis membrane. The second filter element includes a second inlet surface outside the second filter element and a second pure water outlet surface inside the second filter element. The first inlet surface and the second pure water outlet surface are in communication with the space.

2. The water purification structure according to claim 1, characterized in that: It also includes a fixing component, which includes an upper end cover and a lower end cover, which are spaced apart in the vertical direction. The central tube, the reverse osmosis membrane and the second filter element are all disposed between the upper end cover and the lower end cover. Both the upper end cap and the lower end cap have annular first mounting positions. The upper end cap has a second mounting position located within the first mounting position. The second filter element is disposed within the first mounting position, and the central tube and the reverse osmosis membrane are disposed on the second mounting position.

3. The water purification structure according to claim 2, characterized in that: The lower end cap has an annular first positioning rib, the top of the first positioning rib has a step, the bottom of the central tube is sleeved on the step, and the reverse osmosis membrane is sleeved outside the central tube.

4. The water purification structure according to claim 3, characterized in that: Both the upper end cover and the lower end cover have annular second positioning ribs and annular third positioning ribs. The third positioning rib is located inside the second positioning rib, and the third positioning rib and the second positioning rib enclose the first mounting position. The second filter element is installed between the second positioning rib and the third positioning rib. The outer side of the first positioning rib has a plurality of fourth positioning ribs spaced apart along the circumferential direction of the first positioning rib. The side of the fourth positioning rib away from the first positioning rib is connected to the third positioning rib, and the bottom of the reverse osmosis membrane is placed on the fourth positioning rib.

5. The water purification structure according to claim 4, characterized in that: There is a gap between the top of the fourth positioning rib on the side away from the first positioning rib and the bottom of the reverse osmosis membrane, and the height of the upper end of the third positioning rib is the same as the height of the bottom surface of the gap.

6. The water purification structure according to claim 4, characterized in that: Both the upper end cover and the lower end cover have multiple protrusions. The multiple protrusions are located within the first mounting position and are spaced apart along the circumferential direction of the first mounting position. The height of the protrusions is lower than the height of the third positioning rib. The upper and lower ends of the second filter element abut against the protrusions of the upper end cover and the protrusions of the lower end cover, respectively.

7. The water purification structure according to claim 5, characterized in that: The upper end cover has a plurality of fifth positioning ribs, which are spaced apart along the circumference of the upper end cover and located within the third positioning rib. The plurality of fifth positioning ribs and the third positioning rib enclose the second mounting position. A portion of the central tube and the reverse osmosis membrane are disposed between the plurality of fifth positioning ribs and the third positioning rib.

8. The water purification structure according to any one of claims 4 to 7, characterized in that: The outer diameter of the third positioning rib gradually decreases from top to bottom, and the second filter element is sleeved on the outside of the third positioning rib.

9. The water purification structure according to claim 1, characterized in that: The first filter element is a carbon rod, and the second filter element is a carbon fiber filter element.

10. A water purification device, characterized in that: Includes the water purification structure as described in any one of claims 1 to 9.

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