A multi-waterway end cap assembly for a single-stage composite integrated RO filter cartridge filter bottle

Abstract

The present invention relates to the technical field of water purifiers, and in particular to a multi-waterway end cap assembly of a single-stage composite integrated RO filter element filter bottle, comprising a first insert tube, a second insert tube, a third insert tube, a fourth insert tube and a fifth insert tube at the top and a first annular groove and a second annular groove at the bottom, wherein the first annular groove is sleeved outside the second annular groove, and there is a gap between the first annular groove and the second annular groove. The first insert tube is connected to the first annular groove along the outer wall of the end cap assembly, the fifth insert tube is connected to the inside of the first annular groove, the bottom of the second insert tube is connected to the gap between the first annular groove and the second annular groove, and the third insert tube is arranged at the center of the end cap assembly and is connected to the central area surrounded by the second annular groove, and the fourth insert tube is connected to the second annular groove. Compared with the prior art, the present invention can realize that the waterway enters the inside of the end cap twice and then flows out, and the structure volume is small while being conducive to the collection of multi-layer filter elements.

Description

Technical Field

[0001] The invention relates to the technical field of water purifiers, and in particular to a multi-waterway end cover assembly of a single-stage composite integrated RO filter element filter bottle. Background Art

[0002] As the public pursues a better quality of life, people have higher and higher requirements for the quality of drinking water. Therefore, as a drinking water purification device, water purifiers can make the purified water produced fresher, more hygienic and safer, and are widely welcomed by consumers. This has promoted the rapid development of the water purifier manufacturing industry. In order to meet the large demand of the market, how to reduce the cost of water purifier production and use is a problem that needs to be solved in the industry.

[0003] Most of the water purifiers in the prior art use, for example, a household water purifier with enhanced bacteria control disclosed in publication number CN208532432U (publication date February 22, 2019), including a PP cotton filter element filter bottle, a granular γ-FeOOH filter element filter bottle, a compressed activated carbon filter element filter bottle, an ultrafiltration membrane filter element filter bottle and a coconut shell activated carbon filter element filter bottle, and the above five filter bottles are connected in series in sequence through pipelines. Different from the traditional five-stage ultrafiltration water purifier, the water purifier adds a granular γ-FeOOH filter element filter bottle to achieve the purpose of "phosphorus-free" bacteria control by enhancing the removal of inorganic phosphorus in the incoming water. The water purifier is easy to install, the pipe connection method is simple, and water is convenient to take, which can solve the problem of significant increase in bacterial concentration during long-term use of the water purifier. In order to achieve a multifunctional water purification function, filter bottles with different functions are connected in series to form a multi-stage water purifier.

[0004] However, due to the integration of multiple filter bottles, the structure of the water purifier becomes bloated. In order to achieve the integration of the filter bottles, a large number of pipelines are often required, which will still greatly increase the volume of the filter bottles. The purpose of the present invention is to provide an end cover assembly with a compact structure and integrated composite multiple filter element filter bottles. Summary of the invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a multi-waterway end cap assembly of a single-stage composite integrated RO filter element filter bottle, comprising a first insert pipe, a second insert pipe, a third insert pipe, a fourth insert pipe and a fifth insert pipe arranged on the top of the end cap assembly;

[0006] It also includes a first annular groove and a second annular groove arranged at the bottom of the end cover assembly, the first annular groove is sleeved outside the second annular groove, and a gap is provided between the first annular groove and the second annular groove, the first insert tube is connected with the first annular groove along the outer wall of the end cover assembly, the fifth insert tube is connected with the inside of the first annular groove, the bottom of the second insert tube is connected with the gap between the first annular groove and the second annular groove, and in a top view, the third insert tube is arranged in the center of the end cover assembly and is connected with the central area surrounded by the second annular groove, and the fourth insert tube is connected with the second annular groove.

[0007] In one embodiment, the end cap assembly is arranged in the outer bottle of the filter bottle, and the end cap assembly includes a first end cap, the first end cap includes a first side edge and a first end face, the diameter of the first side edge matches the inner diameter of the bottle body of the outer bottle, and the first side edge has a plurality of grooves connecting the upper and lower sides of the first side edge.

[0008] In one embodiment, a plurality of protrusions are disposed on the upper surface of the first end surface.

[0009] In one embodiment, the lower surface of the first end surface is connected to an inner bottle cylinder, the outer diameter of the inner bottle cylinder is smaller than the inner diameter of the first side edge, and the first annular groove is formed between the inner bottle cylinder and the first side edge.

[0010] In one embodiment, a lower surface of the first end surface has a connecting flange, and the first end surface is detachably connected to the inner bottle cylinder through the connecting flange.

[0011] In one embodiment, the upper surface of the first end surface is further provided with a second through hole, a third through hole and a fourth through hole, and the second through hole, the third through hole and the fourth through hole are located within the circular projection of the inner bottle body in a top view.

[0012] In one embodiment, the first insert tube and the fifth insert tube are arranged on the upper surface of the first end surface, the bottom of the side wall of the first insert tube is provided with an opening, and the bottom of the side wall of the fifth insert tube has a connecting portion, which connects the interior of the fifth insert tube and the side of the first annular groove close to its inner circle.

[0013] In one embodiment, the end cap assembly also includes a second end cap, which is located in the inner circle of the first annular groove. The second end cap includes a second end face and a second side edge, the outer diameter of the second side edge is smaller than the inner diameter of the inner bottle cylinder, and a cylindrical socket is provided at the bottom of the second end face, and the second annular groove is formed between the cylindrical socket and the second side edge.

[0014] In one embodiment, the upper surface of the second end face is provided with a second insert tube, a third insert tube and a fourth insert tube, and the second end cover is connected to the first end cover by the second insert tube passing through the second through hole, the third insert tube passing through the third through hole and the fourth insert tube passing through the fourth through hole.

[0015] In one embodiment, a guide groove is further provided on the second end surface, wherein the guide groove connects the edge of the second end surface and the bottom of the second inserting tube, and the guide groove is communicated with the bottom of the second inserting tube.

[0016] Based on the above, compared with the prior art, the multi-waterway end cover assembly of the single-stage composite integrated RO filter element filter bottle provided by the present invention can realize that the waterway enters the end cover twice and then flows out through the arrangement of the first insert tube, the second insert tube, the third insert tube, the fourth insert tube and the fifth insert tube and the first annular groove and the second annular groove. The structure has a small volume and is conducive to the assembly of multiple layers of filter elements.

[0017] Other features and beneficial effects of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other beneficial effects of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions in which the components are drawn in the diagrams, unless otherwise specified.

[0019] Figure 1 A cross-sectional schematic diagram of an embodiment of a multi-waterway end cap assembly of a single-stage composite integrated RO filter element filter bottle provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the first end cover structure of the embodiment;

[0021] Figure 3 is a schematic diagram of a preferred embodiment of the first end cover;

[0022] Figure 4 is a cross-sectional schematic diagram of the second end cover of the embodiment;

[0023] Figure 5 This is a schematic diagram of the exterior of the filter bottle of the embodiment;

[0024] Figure 6Schematic diagram of the cross section of the filter bottle of the embodiment;

[0025] Figure 7 This is a schematic cross-sectional view of a bottle outside the embodiment;

[0026] Figure 8 It is a cross-sectional schematic diagram of a preferred embodiment of the filter bottle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that all terms (including technical terms and scientific terms) used in the present invention have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and should not be understood as limitations on the present invention; it should be further understood that the terms used in the present invention should be understood to have the same meanings as these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined in this invention.

[0029] The following is an explanation through specific examples.

[0030] To achieve at least one of the above advantages or other advantages, an embodiment of the present invention is as follows: Figure 1 As shown, Figure 1 A schematic cross-sectional view of a single-stage composite integrated RO filter element multi-layer purification filter bottle assembly provided in this embodiment.

[0031] like Figure 1 As shown, the end cap assembly 100 provided in this embodiment includes a first insert tube, a second insert tube, a third insert tube, a fourth insert tube and a fifth insert tube disposed on the top of the end cap assembly 100;

[0032] It also includes a first annular groove and a second annular groove arranged at the bottom of the end cover assembly, the first annular groove is sleeved outside the second annular groove, and a gap is provided between the first annular groove and the second annular groove, the first insert tube is connected with the first annular groove along the outer wall of the end cover assembly, the fifth insert tube is connected with the inside of the first annular groove, the bottom of the second insert tube is connected with the gap between the first annular groove and the second annular groove, and in a top view, the third insert tube is arranged in the center of the end cover assembly and is connected with the central area surrounded by the second annular groove, and the fourth insert tube is connected with the second annular groove.

[0033] Specifically, in some embodiments, Figure 2 and Figure 6 As shown, the end cap assembly 100 is arranged in the outer bottle 220 of the filter bottle 200, and the end cap assembly 100 includes a first end cap 110, and the first end cap 110 includes a first side edge 111 and a first end face 112, the diameter of the first side edge 111 matches the inner diameter of the bottle body 222 of the outer bottle 220, and the first side edge 111 has a plurality of grooves 111a connecting the upper and lower side edges of the first side edge 111.

[0034] In some embodiments, Figure 2 As shown, the upper surface of the first end surface 112 is provided with a plurality of protrusions 112a.

[0035] like Figure 1 As shown, the lower surface of the first end surface 112 is connected to the inner bottle cylinder 120 , the outer diameter of the inner bottle cylinder 120 is smaller than the inner diameter of the first side edge 111 , and the first annular groove 101 is formed between the inner bottle cylinder 120 and the first side edge 111 .

[0036] Preferably, if Figure 3 As shown, in some embodiments, the lower surface of the first end surface 112 has a connecting flange 112b, and the first end surface 112 is detachably connected to the inner bottle cylinder 120 through the connecting flange 112b.

[0037] The upper surface of the first end surface 112 is further provided with a second through hole 112c, a third through hole 112d and a fourth through hole 112e. The second through hole 112c, the third through hole 112d and the fourth through hole 112e are located within the circular projection of the inner bottle body 120 in a top view.

[0038] The first insert tube 112f and the fifth insert tube 112g are arranged on the upper surface of the first end surface 112, the bottom of the side wall of the first insert tube 112f is provided with an opening, and the bottom of the side wall of the fifth insert tube 112g has a connecting portion 112h, and the connecting portion 112h connects the interior of the fifth insert tube 112g and the side of the first annular groove 101 close to its inner circle.

[0039] In some embodiments, Figure 1 and Figure 4 As shown, the end cover assembly 100 also includes a second end cover 130, which is located in the inner circle of the first annular groove 101. The second end cover 130 includes a second end face 131 and a second side edge 132. The outer diameter of the second side edge 132 is smaller than the inner diameter of the inner bottle cylinder 120. A cylindrical socket 133 is provided at the bottom of the second end face 131, and the second annular groove 102 is formed between the cylindrical socket 133 and the second side edge 132.

[0040] In some embodiments, Figure 4 As shown, the upper surface of the second end surface 131 is provided with a second insert tube 131a, a third insert tube 131b and a fourth insert tube 131c, and the second end cover 130 is connected to the first end cover 110 by the second insert tube 131a passing through the second through hole 112c, the third insert tube 131b passing through the third through hole 112d and the fourth insert tube 131c passing through the fourth through hole 112e.

[0041] Preferably, if Figure 4 As shown, a guide groove 131d is further provided on the second end surface 131, and the guide groove 131d connects the edge of the second end surface 131 and the bottom of the second inserting tube 131a, and the guide groove 131d is communicated with the bottom of the second inserting tube 131a.

[0042] To further illustrate at least one of the advantages of the present invention or other advantages, the following is an example of a filter bottle embodiment using a single-stage composite integrated RO filter element multi-layer purification filter bottle assembly provided by the present invention.

[0043] like Figure 5-Figure 7 As shown, the filter bottle 200 includes an outer bottle 220, and the outer bottle 220 includes an end 221, a bottle body 222 and an end cover 223. The end 221 is arranged at one end of the bottle body 222, and the diameter of the end 221 is relatively smaller than the diameter of the bottle body 222. The side wall of the end 221 is provided with at least two second clamping parts 221a uniformly distributed in two directions, and the second clamping part 221a has a second horizontal plane and a third inclined plane connected to each other;

[0044] like Figure 5-Figure 7As shown, the top of the end head 221 is provided with a first interface 211, a second interface 212, a third interface 213, a fourth interface 214 and a fifth interface 215, and the interior of the end head 221 is provided with a first slot 224a, a second slot 224b, a third slot 224c, a fourth slot 224d and a fifth slot 224e corresponding to each filter bottle interface 210, the first slot 224a is connected to the first interface 211, the second slot 224b is connected to the second interface 212, the third slot 224c is connected to the third interface 213, the fourth slot 224d is connected to the fourth interface 214, and the fifth slot 224e is connected to the fifth interface 215;

[0045] The end cap 223 is detachably connected to the other end of the bottle body 222 , and a cavity is formed inside the end cap 223 , the bottle body 222 and the end head 221 .

[0046] refer to Figure 5 , Figure 6 The filter bottle 200 further includes a first filter layer 251 and an inner bottle 240, the inner bottle 240 includes an end cap assembly 100 and an inner bottle cylinder 120, and the first end cap 110 includes a first side edge 111 and a first end surface 112. Figure 6 As shown, the diameter of the first side edge 111 matches the inner diameter of the bottle body 222 of the outer bottle 220, and the first side edge 111 has a plurality of grooves 111a connecting the upper and lower sides of the first side edge 111;

[0047] like Figure 1-4 As shown, the upper surface of the first end surface 112 is provided with a plurality of protrusions 112a, the lower surface of the first end surface 112 is provided with a connecting flange 112b, the first end surface 112 is detachably connected to the inner bottle cylinder 120 through the connecting flange 112b, the first filter layer 251 is sleeved outside the inner bottle cylinder 120, a first cavity 201 is provided between the first filter layer 251 and the outer bottle 220, and a second cavity 202 is provided between the first filter layer 251 and the inner bottle 240;

[0048] Preferably, the first filter layer 251 is made of, but not limited to, activated carbon or PP cotton filter material, or a sheath layer of the two.

[0049] The second filter layer 252 is a cylindrical structure. The second filter layer 252 uses but is not limited to RO (Reverse Osmosis) membrane. The outer wall of the cylindrical RO membrane cannot be infiltrated by water. Water can flow into the RO membrane from the bottom end surface. The pure water obtained after filtration flows out from the inner wall of the RO membrane, and the waste water flows out from the top end surface of the RO membrane. The second filter layer 252 is arranged in the second end cap 130 and the inner bottle cylinder 120. Figure 6As shown, a third cavity 203 is defined between the outer wall of the second filter layer 252 and the inner bottle body 120, a fourth cavity 204 is defined between an end surface of the second filter layer 252 close to the second end cap 130 and the second end cap 130, the fourth cavity 204 is communicated with the fourth insert tube 131c, an inner tube is passed through the interior of the second filter layer 252, a fifth cavity 205 is formed in the inner tube, the fifth cavity 205 is communicated with the third insert tube 131b and is separated from the fourth cavity 204.

[0050] Preferably, in some embodiments, a third filter layer 253 may be further provided in the fifth cavity 205, the third filter layer 253 is inserted into the inner tube, and the third filter layer 253 is a hollow structure. Preferably, the third filter layer is made of, but not limited to, activated carbon, PP cotton or functional filter element materials, such as the commonly used taste filter element materials in the prior art.

[0051] Specifically, Figure 6 As shown, the first insert tube 112f is inserted into the first slot 224a, the second insert tube 131a is inserted into the second slot 224b, the third insert tube 131b is inserted into the third slot 224c, the fourth insert tube 131c is inserted into the fourth slot 224d, and the fifth insert tube 112g is inserted into the fifth slot 224e;

[0052] A water seal 260 is provided in the first cannula 112f, the second cannula 131a, the third cannula 131b, the fourth cannula 131c and the fifth cannula 112g. The water seal 260 includes a water seal pin 261 and an elastic structure. The elastic structure pushes the water seal pin 261 to a first position for blocking the cannula. When the water seal pin 261 is at the first position, part of the water seal pin 261 is located in the filter bottle interface 210.

[0053] In actual use, tap water enters from the tap water pipe interface connected to the tap water pipe that communicates with the first interface, enters the filter bottle through the first interface, then enters the first insert tube, enters the gap formed by the convex support between the first end cover and the outer bottle through the opening at the bottom of the side wall of the first insert tube, and then enters the first cavity through a plurality of grooves on the first side edge. Then, the tap water enters the second cavity through the preliminary filtration of the first filter layer to form primary water. The primary water in the second cavity flows through the opening at the bottom of the fifth insert tube, flows through the fifth interface, and flows out from the pump water inlet pipe interface. The primary water is filtered by the external booster pump. After the water is pressurized, the primary water is sent into the filter bottle through the pump primary water pipe interface and the second interface. Since the primary water is purified by the first filter layer to remove impurities, the risk of damage to the booster pump can be reduced. Then the primary water entering the filter bottle flows through the second insert and the guide groove on the second end cover into the third cavity. Then, after being filtered by the RO membrane of the second filter layer, the pure water enters the fifth cavity and flows out to the pure water faucet through the third insert, the third interface and the pure water pipe interface. The waste water obtained by RO membrane filtration enters the fourth cavity and flows out to the concentrated water or waste water faucet through the fourth insert, the fourth interface and the waste water or concentrated water pipe interface.

[0054] Based on the above, compared with the prior art, the multi-waterway end cover assembly of the single-stage composite integrated RO filter element filter bottle provided by the present invention can realize that the waterway enters the end cover twice and then flows out through the arrangement of the first insert tube, the second insert tube, the third insert tube, the fourth insert tube and the fifth insert tube and the first annular groove and the second annular groove. The structure has a small volume and is conducive to the assembly of multiple layers of filter elements.

[0055] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0056] Although the terms such as filter bottle cover, filter bottle, first interface plate, second interface plate, tube interface, filter bottle interface and through hole are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention; the terms "first", "second", etc. (if any) in the description and claims of the embodiments of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-waterway end cap assembly for a single-stage composite integrated RO filter cartridge, characterized in that: It includes a first insert tube, a second insert tube, a third insert tube, a fourth insert tube and a fifth insert tube which are arranged on the top of the end cover assembly; It also includes a first annular groove and a second annular groove arranged at the bottom of the end cover assembly, the first annular groove is sleeved outside the second annular groove, and a gap is provided between the first annular groove and the second annular groove, the first insert tube is connected with the first annular groove along the outer wall of the end cover assembly, the fifth insert tube is connected with the inside of the first annular groove, the bottom of the second insert tube is connected with the gap between the first annular groove and the second annular groove, and in a top view, the third insert tube is arranged in the center of the end cover assembly and is connected with the central area surrounded by the second annular groove, and the fourth insert tube is connected with the second annular groove.

2. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 1 is characterized in that: The end cap assembly is arranged in the outer bottle of the filter bottle, and the end cap assembly includes a first end cap, and the first end cap includes a first side edge and a first end face. The diameter of the first side edge matches the inner diameter of the bottle body of the outer bottle, and the first side edge has a plurality of grooves connecting the upper and lower side edges of the first side edge.

3. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 2 is characterized in that: A plurality of protrusions are provided on the upper surface of the first end surface.

4. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 3 is characterized in that: The lower surface of the first end surface is connected to an inner bottle cylinder, the outer diameter of the inner bottle cylinder is smaller than the inner diameter of the first side edge, and the first annular groove is formed between the inner bottle cylinder and the first side edge.

5. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 4 is characterized in that: The lower surface of the first end surface is provided with a connecting flange, and the first end surface is detachably connected to the inner bottle cylinder through the connecting flange.

6. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 5 is characterized in that: The upper surface of the first end surface is further provided with a second through hole, a third through hole and a fourth through hole. In a top view, the second through hole, the third through hole and the fourth through hole are located within the circular projection of the inner bottle body.

7. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 6 is characterized in that: The first insert tube and the fifth insert tube are arranged on the upper surface of the first end surface, the bottom of the side wall of the first insert tube is provided with an opening, and the bottom of the side wall of the fifth insert tube has a connecting portion, which connects the interior of the fifth insert tube and the side of the first annular groove close to its inner circle.

8. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 7 is characterized in that: The end cap assembly also includes a second end cap, which is located in the inner circle of the first annular groove. The second end cap includes a second end face and a second side edge. The outer diameter of the second side edge is smaller than the inner diameter of the inner bottle cylinder. A cylindrical socket is provided at the bottom of the second end face, and the second annular groove is formed between the cylindrical socket and the second side edge.

9. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 8, characterized in that: The upper surface of the second end surface is provided with a second insert tube, a third insert tube and a fourth insert tube, and the second end cover is connected to the first end cover by the second insert tube passing through the second through hole, the third insert tube passing through the third through hole and the fourth insert tube passing through the fourth through hole.

10. The multi-waterway end cap assembly of the single-stage composite integrated RO filter cartridge filter bottle according to claim 9, characterized in that: The second end surface is also provided with a guide groove, the guide groove connects the edge of the second end surface and the bottom of the second inserting tube, and the guide groove is communicated with the bottom of the second inserting tube.

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