Central pipe for water purification, water purification filter element and water purifier

Abstract

The utility model relates to the technical field of water purification, in particular to a central pipe for water purification, a water purification filter element and a water purifier. The central pipe for water purification comprises a flow guide pipe body and a filling piece, the flow guide pipe body is made of stainless steel materials, a pure water channel is formed in the flow guide pipe body, a filling cavity is formed in the pipe wall of the flow guide pipe body, the filling piece is made of plastic materials, and the filling cavity is filled with the filling piece. According to the central pipe for water purification, the filling cavity of the flow guide pipe body made of the stainless steel is filled with the filling piece made of the plastic material, so that the structural strength of the whole central pipe for water purification is guaranteed, and the cost is also reduced. In addition, pure water flowing in the pure water channel of the central pipe for water purification is only in contact with the flow guide pipe body made of stainless steel, so that the problems that the pure water flows through the central pipe for water purification to generate peculiar smell and separate out harmful substances are solved, and the central pipe is safer and more reliable. The water purification filter element and the water purifier are stable in structure, low in cost, safe and reliable by applying the central pipe for water purification.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a central tube for water purification, a water purification filter element, and a water purifier. Background Technology

[0002] In existing technologies, water purifiers use water filter cartridges to filter water, producing the desired pure water, which is then discharged through a central tube inside the filter cartridge. This central tube is typically made of plastic. While plastic central tubes undergo hygiene and safety testing before use, long-term use still carries the risk of acrylonitrile and styrene leaching, reducing safety. Furthermore, the pure water flowing through the plastic material produces a plastic odor, affecting the taste of the water. In addition, plastic central tubes have low structural strength and are prone to deformation. Related technologies often design the central tube to be made of metal to enhance its structural strength, but this significantly increases the overall manufacturing cost.

[0003] Therefore, there is an urgent need for a central tube, filter cartridge, and water purifier for water purification to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a central tube for water purification, a water purification filter element, and a water purifier, so as to ensure the structural strength of the central tube for water purification, and the central tube for water purification is low in cost and safe and reliable.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A central pipe for water purification includes:

[0007] The guide tube body is made of stainless steel, and a pure water channel is formed inside the guide tube body. A filling cavity is also provided on the tube wall of the guide tube body.

[0008] A filler, the filler being made of plastic, and the filler being filled into the filling cavity.

[0009] As an optional solution, the tube wall of the guide tube is provided with a plurality of water passage holes that communicate with the pure water channel at intervals, and each water passage hole is isolated from the filling cavity.

[0010] As an optional solution, the flow guide tube includes:

[0011] Outer guide tube;

[0012] A flow guide inner tube is coaxially inserted inside the flow guide outer tube. The inner cavity of the flow guide inner tube forms the pure water channel. The first end of the flow guide inner tube is sealed, and the second end is open. The water passage hole penetrates both the flow guide inner tube and the flow guide outer tube.

[0013] A connecting ring is provided, with its first end connected to the outer guide tube and its second end connected to the inner guide tube. The inner cavity of the connecting ring forms the water passage hole. The outer peripheral wall of the inner guide tube, the inner peripheral wall of the outer guide tube, and the outer peripheral wall of the connecting ring together form the filling cavity.

[0014] As an optional feature, the wall thickness h1 of the outer guide tube is 0.3 mm to 1 mm; and / or

[0015] The wall thickness h2 of the inner guide tube is 0.3mm to 1mm.

[0016] As an optional solution, the filling component includes a filling part and a mounting part connected to each other. The filling part is provided with a plurality of clearance holes spaced apart. The filling part fills the filling cavity. The clearance holes are used to avoid the water passage hole. The mounting part extends out of the guide tube body and is used to be installed in the water purification filter cartridge body.

[0017] As an optional solution, the second end of the inner guide tube extends outward from the outer guide tube. The filler includes a filling part and a reinforcing part connected to the filling part. The filling part is provided with a plurality of clearance holes spaced apart. The filling part fills the filling cavity. The clearance holes are used to avoid the water passage hole. The reinforcing part extends outward from the filling cavity and is sleeved on the second end of the inner guide tube.

[0018] As an optional solution, one end of the filler extends out of the guide tube body, the other end of the filler extends out of the filling cavity, and the connection between the end of the guide tube body and the filler is sealed with sealant.

[0019] Alternatively, the filler is integrally injection molded into the filling cavity.

[0020] A water purification filter element includes a water purification filter element body and a water purification central tube as described above, wherein the water purification central tube is installed in the water purification filter element body.

[0021] A water purifier includes a water purifier body and a water purification filter element as described above, wherein the water purification filter element is disposed on the water purifier body.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a central tube for water purification, comprising a guide tube body and a filler. The guide tube body is made of stainless steel and has a pure water channel formed inside. A filling cavity is provided on the wall of the guide tube body, and the filler is made of plastic and filled within the filling cavity. This utility model provides a central tube for water purification by filling the filling cavity of the stainless steel guide tube body with a plastic filler, which not only ensures the structural strength of the entire central tube but also reduces costs. Furthermore, the pure water flowing in the pure water channel of the central tube only comes into contact with the stainless steel guide tube body, eliminating the problems of odor generation and the release of harmful substances when pure water flows through the central tube, making it safer and more reliable.

[0024] This utility model also provides a water purification filter element. By applying the above-mentioned water purification central tube, the structural strength of the water purification central tube is guaranteed, the cost is reduced, and it is safer and more reliable.

[0025] This utility model also provides a water purifier that, by applying the above-mentioned water purification filter element, ensures the structural strength of the central tube for water purification, reduces costs, and is safer and more reliable. Attached Figure Description

[0026] Figure 1 This is a structural cross-sectional view of the central pipe for water purification provided in this embodiment of the utility model;

[0027] Figure 2 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0028] Figure 3 This is a structural cross-sectional view of the guide tube body provided in this embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the central pipe for water purification provided in this embodiment of the utility model;

[0030] Figure 5 This is a structural cross-sectional view of the filler provided in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Flow guide tube body; 11. Flow guide outer tube; 12. Flow guide inner tube; 121. Pure water channel; 13. Connecting ring; 131. Water passage hole; 14. Filling cavity;

[0033] 2. Filler; 21. Filler part; 211. Clearance hole; 22. Mounting part; 23. Reinforcing part. Detailed Implementation

[0034] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] In existing technologies, water purifiers use water filter cartridges to filter water, producing the desired pure water, which is then discharged through a central tube inside the filter cartridge. This central tube is typically made of plastic. While plastic central tubes undergo hygiene and safety testing before use, long-term use still carries the risk of acrylonitrile and styrene leaching, reducing safety. Furthermore, the pure water flowing through the plastic material produces a plastic odor, affecting the taste of the water. In addition, plastic central tubes have low structural strength and are prone to deformation. Related technologies often design the central tube to be made of metal to enhance its structural strength, but this significantly increases the overall manufacturing cost.

[0039] To solve the above problems, such as Figure 1and Figure 2 As shown, this embodiment provides a central water purification pipe, which includes a guide tube body 1 and a filler 2. The guide tube body 1 is made of stainless steel, and a pure water channel 121 is formed inside the guide tube body 1. A filling cavity 14 is provided on the wall of the guide tube body 1. The filler 2 is made of plastic and is filled in the filling cavity 14. The central water purification pipe provided in this embodiment, by filling the filling cavity 14 of the stainless steel guide tube body 1 with the plastic filler 2, not only ensures the structural strength of the entire central water purification pipe but also reduces costs. In addition, the pure water flowing in the pure water channel 121 of the central water purification pipe only comes into contact with the stainless steel guide tube body 1, eliminating the problem of odor and leaching of harmful substances when pure water flows through the central water purification pipe, making it safer and more reliable. Furthermore, it should be noted that since the pure water only comes into contact with the stainless steel guide tube body 1, heated pure water can also flow through the central water purification pipe.

[0040] Optionally, in this embodiment, the guide tube 1 can be made of 304L stainless steel or 316L stainless steel. Optionally, in this embodiment, the filler 2 can be made of polypropylene or polyethylene or ABS plastic.

[0041] Optionally, in this embodiment, the guide tube body 1 is manufactured using processes such as bending, stamping, cutting, and welding. Optionally, in this embodiment, the filler 2 is integrally injection molded into the filling cavity 14. The above-mentioned processing methods make the processing of the central tube for water purification more convenient and reduce processing costs. Specifically, the processed guide tube body 1 can be placed into an injection mold, and then the raw material of the filler 2 can be injected into the injection mold to ensure that the filler 2 is integrally injection molded onto the guide tube body 1.

[0042] In this embodiment, as Figure 1 and Figure 2 As shown, the guide tube 1 has multiple water passages 131 spaced apart on its wall, each communicating with the pure water channel 121, and each water passage 131 is isolated from the filling cavity 14. This arrangement ensures that the pure water produced after filtration by the filter media inside the water filter cartridge flows through the water passages 131 into the pure water channel 121, and then is discharged through the pure water channel 121. Furthermore, since each water passage 131 is isolated from the filling cavity 14, the pure water will not come into contact with the filling material 2 in the filling cavity 14 during its flow through the water passages 131 and the pure water channel 121. This ensures that the flowing pure water only contacts the stainless steel guide tube 1, further preventing the generation of odors and the precipitation of harmful substances when pure water flows through the central water purification pipe, making it safer and more reliable.

[0043] Optionally, in this embodiment, as Figure 2 and Figure 3 As shown, the guide tube body 1 includes an outer guide tube 11, an inner guide tube 12, and a connecting ring 13. The inner guide tube 12 is coaxially inserted inside the outer guide tube 11, and the inner cavity of the inner guide tube 12 forms a pure water channel 121. The first end of the inner guide tube 12 is sealed, and the second end of the inner guide tube 12 is open. A water passage hole 131 passes through the inner guide tube 12 and the outer guide tube 11. The first end of the connecting ring 13 is connected to the outer guide tube 11, and the second end of the connecting ring 13 is connected to the inner guide tube 12. The inner cavity of the connecting ring 13 forms a water passage hole 131. The outer peripheral wall of the inner guide tube 12, the inner peripheral wall of the outer guide tube 11, and the outer peripheral wall of the connecting ring 13 together form a filling cavity 14. The structural design of the aforementioned guide tube 1 ensures that after pure water contacts the outer peripheral wall of the outer guide tube 11, it enters the inner cavity of the inner guide tube 12 (i.e., the pure water channel 121) through the inner cavity of the connecting ring 13 (i.e., the water passage 131), and finally exits through the open end of the second end of the inner guide tube 12, guaranteeing that the filtered pure water only contacts the guide tube 1. Furthermore, the structural design of the aforementioned guide tube 1 simplifies its structure and facilitates its fabrication.

[0044] Optionally, in this embodiment, as Figure 2 As shown, the wall thickness h1 of the outer guide tube 11 is 0.3mm to 1mm. Specifically, the wall thickness h1 of the outer guide tube 11 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm. This wall thickness design of the outer guide tube 11 not only ensures the structural strength of the outer guide tube 11 but also reduces the material usage, thus lowering material costs. Optionally, in this embodiment, the wall thickness h2 of the inner guide tube 12 is 0.3mm to 1mm. Specifically, the wall thickness h2 of the inner guide tube 12 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm. This wall thickness design of the inner guide tube 12 not only ensures the structural strength of the inner guide tube 12 but also reduces the material usage, thus lowering material costs.

[0045] In this embodiment, as Figure 1 , Figure 4 and Figure 5As shown, the filler 2 includes a filling part 21 and a mounting part 22 connected together. The filling part 21 has multiple clearance holes 211 spaced apart. The filling part 21 fills the filling cavity 14, and the clearance holes 211 are used to avoid the water passage hole 131. The mounting part 22 extends outward from the guide tube body 1 and is used to install itself into the water filter cartridge body. Since the cost of the plastic filler 2 is lower than that of the stainless steel guide tube body 1, the use of the mounting part 22 to install the entire water purification central tube into the water filter cartridge body effectively reduces the overall cost of the water purification central tube.

[0046] In this embodiment, as Figure 1 , Figure 4 and Figure 5 As shown, the second end of the inner guide tube 12 extends outward from the outer guide tube 11. The filler 2 also includes a reinforcing part 23 connected to the filling part 21. The reinforcing part 23 extends outward from the filling cavity 14 and is sleeved on the second end of the inner guide tube 12. By using the reinforcing part 23 sleeved on the second end of the inner guide tube 12, not only can the pure water flowing in the pure water channel 121 be prevented from contacting the reinforcing part 23, but the structural strength of the entire water purification central tube is also effectively improved.

[0047] It should be noted that in this embodiment, since one end of the filler 2 (i.e., the mounting part 22) extends out of the guide tube body 1 and the other end of the filler 2 (i.e., the reinforcing part 23) extends out of the filling cavity 14, the connection between the end of the guide tube body 1 and the filler 2 is sealed with sealant to ensure water quality safety. Specifically, the connection between the end of the guide tube body 1 and the mounting part 22 is sealed with sealant, and the connection between the end of the outer guide tube 11 and the reinforcing part 23 is sealed with sealant. This arrangement prevents the pure water produced by filtration from contacting the extended mounting part 22 and the reinforcing part 23, thus ensuring water quality safety. Furthermore, it should be noted that the filter media inside the water purification filter cartridge body surrounds the outer peripheral wall of the outer guide tube 11, and the filter media is located between the mounting part 22 and the reinforcing part 23, thereby ensuring that the pure water filtered by the filter media does not contact the mounting part 22 and the reinforcing part 23.

[0048] This embodiment also provides a water purification filter element, which includes a filter element body and the aforementioned central tube for water purification, the central tube being installed within the filter element body. By utilizing the aforementioned central tube, the water purification filter element provided in this embodiment ensures the structural strength of the central tube, reduces costs, and is more safe and reliable. Optionally, in this embodiment, the water purification filter element can be a reverse osmosis membrane filter element.

[0049] This embodiment also provides a water purifier, which includes a water purifier body and the aforementioned water purification filter element, the water purification filter element being disposed in the water purifier body. The water purifier provided in this embodiment, by applying the aforementioned water purification filter element, ensures the structural strength of the central water purification pipe, reduces costs, and is more safe and reliable.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A central pipe for water purification, characterized in that, include: A flow guide tube (1) is made of stainless steel. A pure water channel (121) is formed inside the flow guide tube (1), and a filling cavity (14) is provided on the wall of the flow guide tube (1). The filler (2) is made of plastic and is filled in the filling cavity (14).

2. The central pipe for water purification according to claim 1, characterized in that, The guide tube (1) has a plurality of water passage holes (131) spaced apart on its wall, which are connected to the pure water channel (121), and each water passage hole (131) is isolated from the filling cavity (14).

3. The central pipe for water purification according to claim 2, characterized in that, The guide tube (1) includes: Outer guide tube (11); A flow guide inner tube (12) is coaxially inserted inside the flow guide outer tube (11). The inner cavity of the flow guide inner tube (12) forms the pure water channel (121). The first end of the flow guide inner tube (12) is sealed, and the second end of the flow guide inner tube (12) is open. The water passage (131) penetrates the flow guide inner tube (12) and the flow guide outer tube (11). A connecting ring (13) is provided, with its first end connected to the outer guide tube (11) and its second end connected to the inner guide tube (12). The inner cavity of the connecting ring (13) forms the water passage hole (131). The outer peripheral wall of the inner guide tube (12), the inner peripheral wall of the outer guide tube (11), and the outer peripheral wall of the connecting ring (13) together form the filling cavity (14).

4. The central pipe for water purification according to claim 3, characterized in that, The wall thickness h1 of the outer guide tube (11) is 0.3 mm to 1 mm; and / or The wall thickness h2 of the inner guide tube (12) is 0.3 mm to 1 mm.

5. The central pipe for water purification according to claim 3 or 4, characterized in that, The filling part (2) includes a filling part (21) and a mounting part (22) connected to each other. The filling part (21) is provided with a plurality of clearance holes (211) spaced apart. The filling part (21) fills the filling cavity (14). The clearance holes (211) are used to avoid the water passage hole (131). The mounting part (22) extends out of the guide tube body (1) and is used to be installed in the water purification filter body.

6. The central pipe for water purification according to claim 3 or 4, characterized in that, The second end of the inner guide tube (12) extends outward from the outer guide tube (11). The filler (2) includes a filling part (21) and a reinforcing part (23) connected to the filling part (21). The filling part (21) is provided with a plurality of clearance holes (211) spaced apart. The filling part (21) fills the filling cavity (14). The clearance holes (211) are used to avoid the water passage hole (131). The reinforcing part (23) extends outward from the filling cavity (14) and is sleeved on the second end of the inner guide tube (12).

7. The central pipe for water purification according to any one of claims 1 to 4, characterized in that, One end of the filler (2) extends out of the guide tube body (1), and the other end of the filler (2) extends out of the filling cavity (14). The connection between the end of the guide tube body (1) and the filler (2) is sealed with sealant.

8. The central pipe for water purification according to any one of claims 1 to 4, characterized in that, The filler (2) is integrally injection molded into the filling cavity (14).

9. A water purification filter element, characterized in that, It includes a water purification filter cartridge body and a water purification center tube as described in any one of claims 1 to 8, wherein the water purification center tube is installed in the water purification filter cartridge body.

10. A water purifier, characterized in that, It includes a water purifier body and a water purification filter element as described in claim 9, wherein the water purification filter element is disposed on the water purifier body.

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